diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000000..6c85e6f6aa --- /dev/null +++ b/.dockerignore @@ -0,0 +1,9 @@ +.ci +.github +.gitignore +.golangci.yml +.idea +.vscode + +LICENSE +*.md diff --git a/.github/workflows/lint-and-tests.yml b/.github/workflows/lint-and-tests.yml new file mode 100644 index 0000000000..7e5f75c35f --- /dev/null +++ b/.github/workflows/lint-and-tests.yml @@ -0,0 +1,33 @@ +name: Lint + Unit Tests +on: [push] + +jobs: + lint: + name: Lint + runs-on: ubuntu-18.04 + steps: + - uses: actions/checkout@v2 + - name: golangci-lint + uses: golangci/golangci-lint-action@v2 + with: + version: latest + working-directory: . + args: --timeout 3m + test: + name: Golang Unit Tests v${{ matrix.go }} (${{ matrix.os }}) + runs-on: ${{ matrix.os }} + strategy: + matrix: + go: ["1.16"] + os: [ubuntu-20.04] + steps: + - uses: actions/checkout@v2 + - uses: actions/setup-go@v1 + with: + go-version: ${{ matrix.go }} + - run: go mod download + shell: bash + - run: ./scripts/build.sh evm + shell: bash + - run: ./scripts/build_test.sh + shell: bash diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000000..87ff040a44 --- /dev/null +++ b/.gitignore @@ -0,0 +1,46 @@ +./main + +*.log +*~ +.DS_Store + +awscpu + +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib +*.profile + +# Test binary, build with `go test -c` +*.test + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out + +# ignore GoLand metafiles directory +.idea/ + +*logs/ + +.vscode* + +*.pb* + +*cpu[0-9]* +*mem[0-9]* +*lock[0-9]* +*.profile +*.swp +*.aux +*.fdb* +*.fls +*.gz +*.pdf + +.coverage + +bin/ +build/ diff --git a/.golangci.yml b/.golangci.yml new file mode 100644 index 0000000000..d2a5e38c1b --- /dev/null +++ b/.golangci.yml @@ -0,0 +1,48 @@ +# This file configures github.com/golangci/golangci-lint. + +run: + timeout: 3m + tests: true + # default is true. Enables skipping of directories: + # vendor$, third_party$, testdata$, examples$, Godeps$, builtin$ + skip-dirs-use-default: true + skip-files: + - core/genesis_alloc.go + +linters: + disable-all: true + enable: + - deadcode + - goconst + - goimports + - gosimple + - govet + - ineffassign + - misspell + - unconvert + - varcheck + +linters-settings: + gofmt: + simplify: true + goconst: + min-len: 3 # minimum length of string constant + min-occurrences: 6 # minimum number of occurrences + +issues: + exclude-rules: + - path: crypto/blake2b/ + linters: + - deadcode + - path: crypto/bn256/cloudflare + linters: + - deadcode + - path: p2p/discv5/ + linters: + - deadcode + - path: core/vm/instructions_test.go + linters: + - goconst + - path: cmd/faucet/ + linters: + - deadcode diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000000..526ea35c2f --- /dev/null +++ b/AUTHORS @@ -0,0 +1,369 @@ +# This is the official list of go-ethereum authors for copyright purposes. + +a e r t h +Abel Nieto +Abel Nieto +Adam Babik +Aditya +Adrià Cidre +Afri Schoedon <5chdn@users.noreply.github.com> +Agustin Armellini Fischer +Airead +Alan Chen +Alejandro Isaza +Ales Katona +Alex Leverington +Alex Wu +Alexandre Van de Sande +Ali Hajimirza +am2rican5 +Andrea Franz +Andrey Petrov +Andrey Petrov +ANOTHEL +Antoine Rondelet +Anton Evangelatov +Antonio Salazar Cardozo +Arba Sasmoyo +Armani Ferrante +Armin Braun +Aron Fischer +atsushi-ishibashi +ayeowch +b00ris +bailantaotao +baizhenxuan +Balint Gabor +Bas van Kervel +Benjamin Brent +benma +Benoit Verkindt +bloonfield +Bo +Bo Ye +Bob Glickstein +Brent +Brian Schroeder +Bruno Škvorc +C. Brown +Caesar Chad +Casey Detrio +CDsigma +changhong +Chase Wright +Chen Quan +chenyufeng +Christian Muehlhaeuser +Christoph Jentzsch +cong +Corey Lin <514971757@qq.com> +cpusoft +Crispin Flowerday +croath +cui <523516579@qq.com> +Dan Kinsley +Daniel A. Nagy +Daniel Sloof +Darrel Herbst +Dave Appleton +Dave McGregor +David Huie +Derek Gottfrid +Diego Siqueira +Diep Pham +dipingxian2 <39109351+dipingxian2@users.noreply.github.com> +dm4 +Dmitrij Koniajev +Dmitry Shulyak +Domino Valdano +Domino Valdano +Dragan Milic +dragonvslinux <35779158+dragononcrypto@users.noreply.github.com> +Egon Elbre +Elad +Eli +Elias Naur +Elliot Shepherd +Emil +emile +Enrique Fynn +Enrique Fynn +EOS Classic +Erichin +Ernesto del Toro +Ethan Buchman +ethersphere +Eugene Valeyev +Evangelos Pappas +Evgeny +Evgeny Danilenko <6655321@bk.ru> +evgk +Fabian Vogelsteller +Fabio Barone +Fabio Berger +FaceHo +Felix Lange +Ferenc Szabo +ferhat elmas +Fiisio +Frank Szendzielarz <33515470+FrankSzendzielarz@users.noreply.github.com> +Frank Wang +Franklin +Furkan KAMACI +GagziW +Gary Rong +George Ornbo +Gregg Dourgarian +Guilherme Salgado +Guillaume Ballet +Guillaume Nicolas +GuiltyMorishita +Gus +Gustav Simonsson +Gísli Kristjánsson +Ha ĐANG +HackyMiner +hadv +Hao Bryan Cheng +HAOYUatHZ <37070449+HAOYUatHZ@users.noreply.github.com> +Henning Diedrich +holisticode +Hongbin Mao +Hsien-Tang Kao +Husam Ibrahim <39692071+HusamIbrahim@users.noreply.github.com> +hydai +Hyung-Kyu Hqueue Choi +Ian Macalinao +Ian Norden +Isidoro Ghezzi +Iskander (Alex) Sharipov +Ivan Daniluk +Ivo Georgiev +Jae Kwon +Jamie Pitts +Janos Guljas +Janoš Guljaš +Jason Carver +Javier Peletier +Javier Peletier +Javier Sagredo +Jay +Jay Guo +Jaynti Kanani +Jeff Prestes +Jeff R. Allen +Jeffery Robert Walsh +Jeffrey Wilcke +Jens Agerberg +Jeremy McNevin +Jeremy Schlatter +Jerzy Lasyk +Jia Chenhui +Jim McDonald +jkcomment +Joel Burget +John C. Vernaleo +Johns Beharry +Jonas +Jonathan Brown +JoranHonig +Jordan Krage +Joseph Chow +jtakalai +JU HYEONG PARK +Justin Clark-Casey +Justin Drake +jwasinger +ken10100147 +Kenji Siu +Kenso Trabing +Kenso Trabing +Kevin +kevin.xu +kiel barry +kimmylin <30611210+kimmylin@users.noreply.github.com> +Kitten King <53072918+kittenking@users.noreply.github.com> +knarfeh +Kobi Gurkan +Konrad Feldmeier +Kris Shinn +Kurkó Mihály +Kushagra Sharma +Kwuaint <34888408+kwuaint@users.noreply.github.com> +Kyuntae Ethan Kim +ledgerwatch +Lefteris Karapetsas +Leif Jurvetson +Leo Shklovskii +LeoLiao +Lewis Marshall +lhendre +Liang Ma +Liang Ma +Liang ZOU +libotony +ligi +Lio李欧 +Lorenzo Manacorda +Louis Holbrook +Luca Zeug +Magicking +manlio +Maran Hidskes +Marek Kotewicz +Marius van der Wijden +Mark +Mark Rushakoff +mark.lin +Martin Alex Philip Dawson +Martin Holst Swende +Martin Klepsch +Mats Julian Olsen +Matt K <1036969+mkrump@users.noreply.github.com> +Matthew Di Ferrante +Matthew Halpern +Matthew Halpern +Matthew Wampler-Doty +Max Sistemich +Maximilian Meister +Micah Zoltu +Michael Ruminer +Miguel Mota +Miya Chen +Mohanson +mr_franklin +Mymskmkt <1847234666@qq.com> +Nalin Bhardwaj +Nchinda Nchinda +necaremus +needkane <604476380@qq.com> +Nguyen Kien Trung +Nguyen Sy Thanh Son +Nick Dodson +Nick Johnson +Nicolas Guillaume +Nilesh Trivedi +Nimrod Gutman +njupt-moon <1015041018@njupt.edu.cn> +nkbai +nobody +Noman +Oleg Kovalov +Oli Bye +Osuke +Paul Berg +Paul Litvak +Paulo L F Casaretto +Paweł Bylica +Pedro Pombeiro +Peter Broadhurst +Peter Pratscher +Petr Mikusek +Philip Schlump +Pierre Neter +PilkyuJung +protolambda +Péter Szilágyi +qd-ethan <31876119+qdgogogo@users.noreply.github.com> +Raghav Sood +Ralph Caraveo +Ralph Caraveo III +Ramesh Nair +reinerRubin +rhaps107 +Ricardo Catalinas Jiménez +Ricardo Domingos +Richard Hart +RJ Catalano +Rob +Rob Mulholand +Robert Zaremba +Roc Yu +Runchao Han +Russ Cox +Ryan Schneider +Rémy Roy +S. Matthew English +salanfe +Samuel Marks +Sarlor +Sasuke1964 +Saulius Grigaitis +Sean +Sheldon <11510383@mail.sustc.edu.cn> +Sheldon <374662347@qq.com> +Shintaro Kaneko +Shuai Qi +Shunsuke Watanabe +silence +Simon Jentzsch +slumber1122 +Smilenator +Sorin Neacsu +Stein Dekker +Steve Gattuso +Steve Ruckdashel +Steve Waldman +Steven Roose +stompesi +stormpang +sunxiaojun2014 +tamirms +Taylor Gerring +TColl <38299499+TColl@users.noreply.github.com> +terasum +Thomas Bocek +thomasmodeneis +thumb8432 +Ti Zhou +Tosh Camille +tsarpaul +tzapu +ult-bobonovski +Valentin Wüstholz +Vedhavyas Singareddi +Victor Farazdagi +Victor Tran +Vie +Viktor Trón +Ville Sundell +vim88 +Vincent G +Vincent Serpoul +Vitalik Buterin +Vitaly Bogdanov +Vitaly V +Vivek Anand +Vlad +Vlad Bokov +Vlad Gluhovsky +weimumu <934657014@qq.com> +Wenbiao Zheng +William Setzer +williambannas +Wuxiang +xiekeyang +xincaosu +yahtoo +YaoZengzeng +YH-Zhou +Yohann Léon +Yoichi Hirai +Yondon Fu +YOSHIDA Masanori +yoza +Yusup +Zach +zah +Zahoor Mohamed +Zak Cole +zer0to0ne <36526113+zer0to0ne@users.noreply.github.com> +Zhenguo Niu +Zoe Nolan +Zsolt Felföldi +Łukasz Kurowski +ΞTHΞЯSPHΞЯΞ <{viktor.tron,nagydani,zsfelfoldi}@gmail.com> +Максим Чусовлянов +大彬 +贺鹏飞 +유용환 <33824408+eric-yoo@users.noreply.github.com> diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000000..18421dd118 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,30 @@ +# syntax=docker/dockerfile:experimental + +# ============= Setting up base Stage ================ +# Set required AVALANCHE_VERSION parameter in build image script +ARG AVALANCHE_VERSION + +# ============= Compilation Stage ================ +FROM golang:1.17.1-buster AS builder +RUN apt-get update && apt-get install -y --no-install-recommends bash=5.0-4 git=1:2.20.1-2+deb10u3 make=4.2.1-1.2 gcc=4:8.3.0-1 musl-dev=1.1.21-2 ca-certificates=20200601~deb10u2 linux-headers-amd64 + +WORKDIR /build +# Copy and download avalanche dependencies using go mod +COPY go.mod . +COPY go.sum . +RUN go mod download + +# Copy the code into the container +COPY . . + +# Pass in SUBNET_EVM_COMMIT as an arg to allow the build script to set this externally +ARG SUBNET_EVM_COMMIT +ARG CURRENT_BRANCH + +RUN export SUBNET_EVM_COMMIT=$SUBNET_EVM_COMMIT && export CURRENT_BRANCH=$CURRENT_BRANCH && ./scripts/build.sh /build/evm + +# ============= Cleanup Stage ================ +FROM avaplatform/avalanchego:$AVALANCHE_VERSION AS builtImage + +# Copy the evm binary into the correct location in the container +COPY --from=builder /build/evm /avalanchego/build/plugins/evm diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000000..b78c8681a2 --- /dev/null +++ b/LICENSE @@ -0,0 +1,165 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2020 Ava Labs. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. Additional Definitions. + + As used herein, "this License" refers to version 3 of the GNU Lesser +General Public License, and the "GNU GPL" refers to version 3 of the GNU +General Public License. + + "The Library" refers to a covered work governed by this License, +other than an Application or a Combined Work as defined below. + + An "Application" is any work that makes use of an interface provided +by the Library, but which is not otherwise based on the Library. +Defining a subclass of a class defined by the Library is deemed a mode +of using an interface provided by the Library. + + A "Combined Work" is a work produced by combining or linking an +Application with the Library. The particular version of the Library +with which the Combined Work was made is also called the "Linked +Version". + + The "Minimal Corresponding Source" for a Combined Work means the +Corresponding Source for the Combined Work, excluding any source code +for portions of the Combined Work that, considered in isolation, are +based on the Application, and not on the Linked Version. + + The "Corresponding Application Code" for a Combined Work means the +object code and/or source code for the Application, including any data +and utility programs needed for reproducing the Combined Work from the +Application, but excluding the System Libraries of the Combined Work. + + 1. Exception to Section 3 of the GNU GPL. + + You may convey a covered work under sections 3 and 4 of this License +without being bound by section 3 of the GNU GPL. + + 2. Conveying Modified Versions. + + If you modify a copy of the Library, and, in your modifications, a +facility refers to a function or data to be supplied by an Application +that uses the facility (other than as an argument passed when the +facility is invoked), then you may convey a copy of the modified +version: + + a) under this License, provided that you make a good faith effort to + ensure that, in the event an Application does not supply the + function or data, the facility still operates, and performs + whatever part of its purpose remains meaningful, or + + b) under the GNU GPL, with none of the additional permissions of + this License applicable to that copy. + + 3. Object Code Incorporating Material from Library Header Files. + + The object code form of an Application may incorporate material from +a header file that is part of the Library. You may convey such object +code under terms of your choice, provided that, if the incorporated +material is not limited to numerical parameters, data structure +layouts and accessors, or small macros, inline functions and templates +(ten or fewer lines in length), you do both of the following: + + a) Give prominent notice with each copy of the object code that the + Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the object code with a copy of the GNU GPL and this license + document. + + 4. Combined Works. + + You may convey a Combined Work under terms of your choice that, +taken together, effectively do not restrict modification of the +portions of the Library contained in the Combined Work and reverse +engineering for debugging such modifications, if you also do each of +the following: + + a) Give prominent notice with each copy of the Combined Work that + the Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the Combined Work with a copy of the GNU GPL and this license + document. + + c) For a Combined Work that displays copyright notices during + execution, include the copyright notice for the Library among + these notices, as well as a reference directing the user to the + copies of the GNU GPL and this license document. + + d) Do one of the following: + + 0) Convey the Minimal Corresponding Source under the terms of this + License, and the Corresponding Application Code in a form + suitable for, and under terms that permit, the user to + recombine or relink the Application with a modified version of + the Linked Version to produce a modified Combined Work, in the + manner specified by section 6 of the GNU GPL for conveying + Corresponding Source. + + 1) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (a) uses at run time + a copy of the Library already present on the user's computer + system, and (b) will operate properly with a modified version + of the Library that is interface-compatible with the Linked + Version. + + e) Provide Installation Information, but only if you would otherwise + be required to provide such information under section 6 of the + GNU GPL, and only to the extent that such information is + necessary to install and execute a modified version of the + Combined Work produced by recombining or relinking the + Application with a modified version of the Linked Version. (If + you use option 4d0, the Installation Information must accompany + the Minimal Corresponding Source and Corresponding Application + Code. If you use option 4d1, you must provide the Installation + Information in the manner specified by section 6 of the GNU GPL + for conveying Corresponding Source.) + + 5. Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff --git a/README.md b/README.md new file mode 100644 index 0000000000..d5322b3116 --- /dev/null +++ b/README.md @@ -0,0 +1,37 @@ +# Subnet EVM + +[Avalanche](https://docs.avax.network/learn/platform-overview) is a network composed of multiple blockchains. +Each blockchain is an instance of a Virtual Machine (VM), much like an object in an object-oriented language is an instance of a class. +That is, the VM defines the behavior of the blockchain. + +Subnet EVM is the [Virtual Machine (VM)](https://docs.avax.network/learn/platform-overview#virtual-machines) that defines the Subnet Contract Chains. Subnet EVM is a simplified version of [Coreth VM (C-Chain)](https://github.com/ava-labs/coreth). + +This chain implements the Ethereum Virtual Machine and supports Solidity smart contracts as well as most other Ethereum client functionality. + +## Building + +The Subnet EVM runs in a separate process from the main AvalancheGo process and communicates with it over a local gRPC connection. + +## API + +The Subnet EVM supports the following API namespaces: + +- `eth` +- `personal` +- `txpool` +- `debug` + +Only the `eth` namespace is enabled by default. +Full documentation for the C-Chain's API can be found [here.](https://docs.avax.network/build/avalanchego-apis/contract-chain-c-chain-api) + +## Compatibility + +The Subnet EVM is compatible with almost all Ethereum tooling, including [Remix,](https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask) [Metamask](https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask) and [Truffle.](https://docs.avax.network/build/tutorials/smart-contracts/using-truffle-with-the-avalanche-c-chain) + +## Differences Between Subnet EVM and Coreth + +- Added configurable fees and gas limits in genesis +- Merged Avalanche hardforks into the single "Subnet EVM" hardfork +- Removed Atomic Txs and Shared Memory +- Removed Multicoin Contract and State +- Removed DAO Hardfork Support diff --git a/accounts/abi/abi.go b/accounts/abi/abi.go new file mode 100644 index 0000000000..08dfb0ba9f --- /dev/null +++ b/accounts/abi/abi.go @@ -0,0 +1,280 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "bytes" + "encoding/json" + "errors" + "fmt" + "io" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +// The ABI holds information about a contract's context and available +// invokable methods. It will allow you to type check function calls and +// packs data accordingly. +type ABI struct { + Constructor Method + Methods map[string]Method + Events map[string]Event + Errors map[string]Error + + // Additional "special" functions introduced in solidity v0.6.0. + // It's separated from the original default fallback. Each contract + // can only define one fallback and receive function. + Fallback Method // Note it's also used to represent legacy fallback before v0.6.0 + Receive Method +} + +// JSON returns a parsed ABI interface and error if it failed. +func JSON(reader io.Reader) (ABI, error) { + dec := json.NewDecoder(reader) + + var abi ABI + if err := dec.Decode(&abi); err != nil { + return ABI{}, err + } + return abi, nil +} + +// Pack the given method name to conform the ABI. Method call's data +// will consist of method_id, args0, arg1, ... argN. Method id consists +// of 4 bytes and arguments are all 32 bytes. +// Method ids are created from the first 4 bytes of the hash of the +// methods string signature. (signature = baz(uint32,string32)) +func (abi ABI) Pack(name string, args ...interface{}) ([]byte, error) { + // Fetch the ABI of the requested method + if name == "" { + // constructor + arguments, err := abi.Constructor.Inputs.Pack(args...) + if err != nil { + return nil, err + } + return arguments, nil + } + method, exist := abi.Methods[name] + if !exist { + return nil, fmt.Errorf("method '%s' not found", name) + } + arguments, err := method.Inputs.Pack(args...) + if err != nil { + return nil, err + } + // Pack up the method ID too if not a constructor and return + return append(method.ID, arguments...), nil +} + +func (abi ABI) getArguments(name string, data []byte) (Arguments, error) { + // since there can't be naming collisions with contracts and events, + // we need to decide whether we're calling a method or an event + var args Arguments + if method, ok := abi.Methods[name]; ok { + if len(data)%32 != 0 { + return nil, fmt.Errorf("abi: improperly formatted output: %s - Bytes: [%+v]", string(data), data) + } + args = method.Outputs + } + if event, ok := abi.Events[name]; ok { + args = event.Inputs + } + if args == nil { + return nil, errors.New("abi: could not locate named method or event") + } + return args, nil +} + +// Unpack unpacks the output according to the abi specification. +func (abi ABI) Unpack(name string, data []byte) ([]interface{}, error) { + args, err := abi.getArguments(name, data) + if err != nil { + return nil, err + } + return args.Unpack(data) +} + +// UnpackIntoInterface unpacks the output in v according to the abi specification. +// It performs an additional copy. Please only use, if you want to unpack into a +// structure that does not strictly conform to the abi structure (e.g. has additional arguments) +func (abi ABI) UnpackIntoInterface(v interface{}, name string, data []byte) error { + args, err := abi.getArguments(name, data) + if err != nil { + return err + } + unpacked, err := args.Unpack(data) + if err != nil { + return err + } + return args.Copy(v, unpacked) +} + +// UnpackIntoMap unpacks a log into the provided map[string]interface{}. +func (abi ABI) UnpackIntoMap(v map[string]interface{}, name string, data []byte) (err error) { + args, err := abi.getArguments(name, data) + if err != nil { + return err + } + return args.UnpackIntoMap(v, data) +} + +// UnmarshalJSON implements json.Unmarshaler interface. +func (abi *ABI) UnmarshalJSON(data []byte) error { + var fields []struct { + Type string + Name string + Inputs []Argument + Outputs []Argument + + // Status indicator which can be: "pure", "view", + // "nonpayable" or "payable". + StateMutability string + + // Deprecated Status indicators, but removed in v0.6.0. + Constant bool // True if function is either pure or view + Payable bool // True if function is payable + + // Event relevant indicator represents the event is + // declared as anonymous. + Anonymous bool + } + if err := json.Unmarshal(data, &fields); err != nil { + return err + } + abi.Methods = make(map[string]Method) + abi.Events = make(map[string]Event) + abi.Errors = make(map[string]Error) + for _, field := range fields { + switch field.Type { + case "constructor": + abi.Constructor = NewMethod("", "", Constructor, field.StateMutability, field.Constant, field.Payable, field.Inputs, nil) + case "function": + name := overloadedName(field.Name, func(s string) bool { _, ok := abi.Methods[s]; return ok }) + abi.Methods[name] = NewMethod(name, field.Name, Function, field.StateMutability, field.Constant, field.Payable, field.Inputs, field.Outputs) + case "fallback": + // New introduced function type in v0.6.0, check more detail + // here https://solidity.readthedocs.io/en/v0.6.0/contracts.html#fallback-function + if abi.HasFallback() { + return errors.New("only single fallback is allowed") + } + abi.Fallback = NewMethod("", "", Fallback, field.StateMutability, field.Constant, field.Payable, nil, nil) + case "receive": + // New introduced function type in v0.6.0, check more detail + // here https://solidity.readthedocs.io/en/v0.6.0/contracts.html#fallback-function + if abi.HasReceive() { + return errors.New("only single receive is allowed") + } + if field.StateMutability != "payable" { + return errors.New("the statemutability of receive can only be payable") + } + abi.Receive = NewMethod("", "", Receive, field.StateMutability, field.Constant, field.Payable, nil, nil) + case "event": + name := overloadedName(field.Name, func(s string) bool { _, ok := abi.Events[s]; return ok }) + abi.Events[name] = NewEvent(name, field.Name, field.Anonymous, field.Inputs) + case "error": + abi.Errors[field.Name] = NewError(field.Name, field.Inputs) + default: + return fmt.Errorf("abi: could not recognize type %v of field %v", field.Type, field.Name) + } + } + return nil +} + +// MethodById looks up a method by the 4-byte id, +// returns nil if none found. +func (abi *ABI) MethodById(sigdata []byte) (*Method, error) { + if len(sigdata) < 4 { + return nil, fmt.Errorf("data too short (%d bytes) for abi method lookup", len(sigdata)) + } + for _, method := range abi.Methods { + if bytes.Equal(method.ID, sigdata[:4]) { + return &method, nil + } + } + return nil, fmt.Errorf("no method with id: %#x", sigdata[:4]) +} + +// EventByID looks an event up by its topic hash in the +// ABI and returns nil if none found. +func (abi *ABI) EventByID(topic common.Hash) (*Event, error) { + for _, event := range abi.Events { + if bytes.Equal(event.ID.Bytes(), topic.Bytes()) { + return &event, nil + } + } + return nil, fmt.Errorf("no event with id: %#x", topic.Hex()) +} + +// HasFallback returns an indicator whether a fallback function is included. +func (abi *ABI) HasFallback() bool { + return abi.Fallback.Type == Fallback +} + +// HasReceive returns an indicator whether a receive function is included. +func (abi *ABI) HasReceive() bool { + return abi.Receive.Type == Receive +} + +// revertSelector is a special function selector for revert reason unpacking. +var revertSelector = crypto.Keccak256([]byte("Error(string)"))[:4] + +// UnpackRevert resolves the abi-encoded revert reason. According to the solidity +// spec https://solidity.readthedocs.io/en/latest/control-structures.html#revert, +// the provided revert reason is abi-encoded as if it were a call to a function +// `Error(string)`. So it's a special tool for it. +func UnpackRevert(data []byte) (string, error) { + if len(data) < 4 { + return "", errors.New("invalid data for unpacking") + } + if !bytes.Equal(data[:4], revertSelector) { + return "", errors.New("invalid data for unpacking") + } + typ, _ := NewType("string", "", nil) + unpacked, err := (Arguments{{Type: typ}}).Unpack(data[4:]) + if err != nil { + return "", err + } + return unpacked[0].(string), nil +} + +// overloadedName returns the next available name for a given thing. +// Needed since solidity allows for overloading. +// +// e.g. if the abi contains Methods send, send1 +// overloadedName would return send2 for input send. +// +// overloadedName works for methods, events and errors. +func overloadedName(rawName string, isAvail func(string) bool) string { + name := rawName + ok := isAvail(name) + for idx := 0; ok; idx++ { + name = fmt.Sprintf("%s%d", rawName, idx) + ok = isAvail(name) + } + return name +} diff --git a/accounts/abi/abi_test.go b/accounts/abi/abi_test.go new file mode 100644 index 0000000000..f81abb9d29 --- /dev/null +++ b/accounts/abi/abi_test.go @@ -0,0 +1,1172 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "bytes" + "encoding/hex" + "errors" + "fmt" + "math/big" + "reflect" + "strings" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" +) + +const jsondata = ` +[ + { "type" : "function", "name" : ""}, + { "type" : "function", "name" : "balance", "stateMutability" : "view" }, + { "type" : "function", "name" : "send", "inputs" : [ { "name" : "amount", "type" : "uint256" } ] }, + { "type" : "function", "name" : "test", "inputs" : [ { "name" : "number", "type" : "uint32" } ] }, + { "type" : "function", "name" : "string", "inputs" : [ { "name" : "inputs", "type" : "string" } ] }, + { "type" : "function", "name" : "bool", "inputs" : [ { "name" : "inputs", "type" : "bool" } ] }, + { "type" : "function", "name" : "address", "inputs" : [ { "name" : "inputs", "type" : "address" } ] }, + { "type" : "function", "name" : "uint64[2]", "inputs" : [ { "name" : "inputs", "type" : "uint64[2]" } ] }, + { "type" : "function", "name" : "uint64[]", "inputs" : [ { "name" : "inputs", "type" : "uint64[]" } ] }, + { "type" : "function", "name" : "int8", "inputs" : [ { "name" : "inputs", "type" : "int8" } ] }, + { "type" : "function", "name" : "bytes32", "inputs" : [ { "name" : "inputs", "type" : "bytes32" } ] }, + { "type" : "function", "name" : "foo", "inputs" : [ { "name" : "inputs", "type" : "uint32" } ] }, + { "type" : "function", "name" : "bar", "inputs" : [ { "name" : "inputs", "type" : "uint32" }, { "name" : "string", "type" : "uint16" } ] }, + { "type" : "function", "name" : "slice", "inputs" : [ { "name" : "inputs", "type" : "uint32[2]" } ] }, + { "type" : "function", "name" : "slice256", "inputs" : [ { "name" : "inputs", "type" : "uint256[2]" } ] }, + { "type" : "function", "name" : "sliceAddress", "inputs" : [ { "name" : "inputs", "type" : "address[]" } ] }, + { "type" : "function", "name" : "sliceMultiAddress", "inputs" : [ { "name" : "a", "type" : "address[]" }, { "name" : "b", "type" : "address[]" } ] }, + { "type" : "function", "name" : "nestedArray", "inputs" : [ { "name" : "a", "type" : "uint256[2][2]" }, { "name" : "b", "type" : "address[]" } ] }, + { "type" : "function", "name" : "nestedArray2", "inputs" : [ { "name" : "a", "type" : "uint8[][2]" } ] }, + { "type" : "function", "name" : "nestedSlice", "inputs" : [ { "name" : "a", "type" : "uint8[][]" } ] }, + { "type" : "function", "name" : "receive", "inputs" : [ { "name" : "memo", "type" : "bytes" }], "outputs" : [], "payable" : true, "stateMutability" : "payable" }, + { "type" : "function", "name" : "fixedArrStr", "stateMutability" : "view", "inputs" : [ { "name" : "str", "type" : "string" }, { "name" : "fixedArr", "type" : "uint256[2]" } ] }, + { "type" : "function", "name" : "fixedArrBytes", "stateMutability" : "view", "inputs" : [ { "name" : "bytes", "type" : "bytes" }, { "name" : "fixedArr", "type" : "uint256[2]" } ] }, + { "type" : "function", "name" : "mixedArrStr", "stateMutability" : "view", "inputs" : [ { "name" : "str", "type" : "string" }, { "name" : "fixedArr", "type" : "uint256[2]" }, { "name" : "dynArr", "type" : "uint256[]" } ] }, + { "type" : "function", "name" : "doubleFixedArrStr", "stateMutability" : "view", "inputs" : [ { "name" : "str", "type" : "string" }, { "name" : "fixedArr1", "type" : "uint256[2]" }, { "name" : "fixedArr2", "type" : "uint256[3]" } ] }, + { "type" : "function", "name" : "multipleMixedArrStr", "stateMutability" : "view", "inputs" : [ { "name" : "str", "type" : "string" }, { "name" : "fixedArr1", "type" : "uint256[2]" }, { "name" : "dynArr", "type" : "uint256[]" }, { "name" : "fixedArr2", "type" : "uint256[3]" } ] }, + { "type" : "function", "name" : "overloadedNames", "stateMutability" : "view", "inputs": [ { "components": [ { "internalType": "uint256", "name": "_f", "type": "uint256" }, { "internalType": "uint256", "name": "__f", "type": "uint256"}, { "internalType": "uint256", "name": "f", "type": "uint256"}],"internalType": "struct Overloader.F", "name": "f","type": "tuple"}]} +]` + +var ( + Uint256, _ = NewType("uint256", "", nil) + Uint32, _ = NewType("uint32", "", nil) + Uint16, _ = NewType("uint16", "", nil) + String, _ = NewType("string", "", nil) + Bool, _ = NewType("bool", "", nil) + Bytes, _ = NewType("bytes", "", nil) + Bytes32, _ = NewType("bytes32", "", nil) + Address, _ = NewType("address", "", nil) + Uint64Arr, _ = NewType("uint64[]", "", nil) + AddressArr, _ = NewType("address[]", "", nil) + Int8, _ = NewType("int8", "", nil) + // Special types for testing + Uint32Arr2, _ = NewType("uint32[2]", "", nil) + Uint64Arr2, _ = NewType("uint64[2]", "", nil) + Uint256Arr, _ = NewType("uint256[]", "", nil) + Uint256Arr2, _ = NewType("uint256[2]", "", nil) + Uint256Arr3, _ = NewType("uint256[3]", "", nil) + Uint256ArrNested, _ = NewType("uint256[2][2]", "", nil) + Uint8ArrNested, _ = NewType("uint8[][2]", "", nil) + Uint8SliceNested, _ = NewType("uint8[][]", "", nil) + TupleF, _ = NewType("tuple", "struct Overloader.F", []ArgumentMarshaling{ + {Name: "_f", Type: "uint256"}, + {Name: "__f", Type: "uint256"}, + {Name: "f", Type: "uint256"}}) +) + +var methods = map[string]Method{ + "": NewMethod("", "", Function, "", false, false, nil, nil), + "balance": NewMethod("balance", "balance", Function, "view", false, false, nil, nil), + "send": NewMethod("send", "send", Function, "", false, false, []Argument{{"amount", Uint256, false}}, nil), + "test": NewMethod("test", "test", Function, "", false, false, []Argument{{"number", Uint32, false}}, nil), + "string": NewMethod("string", "string", Function, "", false, false, []Argument{{"inputs", String, false}}, nil), + "bool": NewMethod("bool", "bool", Function, "", false, false, []Argument{{"inputs", Bool, false}}, nil), + "address": NewMethod("address", "address", Function, "", false, false, []Argument{{"inputs", Address, false}}, nil), + "uint64[]": NewMethod("uint64[]", "uint64[]", Function, "", false, false, []Argument{{"inputs", Uint64Arr, false}}, nil), + "uint64[2]": NewMethod("uint64[2]", "uint64[2]", Function, "", false, false, []Argument{{"inputs", Uint64Arr2, false}}, nil), + "int8": NewMethod("int8", "int8", Function, "", false, false, []Argument{{"inputs", Int8, false}}, nil), + "bytes32": NewMethod("bytes32", "bytes32", Function, "", false, false, []Argument{{"inputs", Bytes32, false}}, nil), + "foo": NewMethod("foo", "foo", Function, "", false, false, []Argument{{"inputs", Uint32, false}}, nil), + "bar": NewMethod("bar", "bar", Function, "", false, false, []Argument{{"inputs", Uint32, false}, {"string", Uint16, false}}, nil), + "slice": NewMethod("slice", "slice", Function, "", false, false, []Argument{{"inputs", Uint32Arr2, false}}, nil), + "slice256": NewMethod("slice256", "slice256", Function, "", false, false, []Argument{{"inputs", Uint256Arr2, false}}, nil), + "sliceAddress": NewMethod("sliceAddress", "sliceAddress", Function, "", false, false, []Argument{{"inputs", AddressArr, false}}, nil), + "sliceMultiAddress": NewMethod("sliceMultiAddress", "sliceMultiAddress", Function, "", false, false, []Argument{{"a", AddressArr, false}, {"b", AddressArr, false}}, nil), + "nestedArray": NewMethod("nestedArray", "nestedArray", Function, "", false, false, []Argument{{"a", Uint256ArrNested, false}, {"b", AddressArr, false}}, nil), + "nestedArray2": NewMethod("nestedArray2", "nestedArray2", Function, "", false, false, []Argument{{"a", Uint8ArrNested, false}}, nil), + "nestedSlice": NewMethod("nestedSlice", "nestedSlice", Function, "", false, false, []Argument{{"a", Uint8SliceNested, false}}, nil), + "receive": NewMethod("receive", "receive", Function, "payable", false, true, []Argument{{"memo", Bytes, false}}, []Argument{}), + "fixedArrStr": NewMethod("fixedArrStr", "fixedArrStr", Function, "view", false, false, []Argument{{"str", String, false}, {"fixedArr", Uint256Arr2, false}}, nil), + "fixedArrBytes": NewMethod("fixedArrBytes", "fixedArrBytes", Function, "view", false, false, []Argument{{"bytes", Bytes, false}, {"fixedArr", Uint256Arr2, false}}, nil), + "mixedArrStr": NewMethod("mixedArrStr", "mixedArrStr", Function, "view", false, false, []Argument{{"str", String, false}, {"fixedArr", Uint256Arr2, false}, {"dynArr", Uint256Arr, false}}, nil), + "doubleFixedArrStr": NewMethod("doubleFixedArrStr", "doubleFixedArrStr", Function, "view", false, false, []Argument{{"str", String, false}, {"fixedArr1", Uint256Arr2, false}, {"fixedArr2", Uint256Arr3, false}}, nil), + "multipleMixedArrStr": NewMethod("multipleMixedArrStr", "multipleMixedArrStr", Function, "view", false, false, []Argument{{"str", String, false}, {"fixedArr1", Uint256Arr2, false}, {"dynArr", Uint256Arr, false}, {"fixedArr2", Uint256Arr3, false}}, nil), + "overloadedNames": NewMethod("overloadedNames", "overloadedNames", Function, "view", false, false, []Argument{{"f", TupleF, false}}, nil), +} + +func TestReader(t *testing.T) { + abi := ABI{ + Methods: methods, + } + + exp, err := JSON(strings.NewReader(jsondata)) + if err != nil { + t.Fatal(err) + } + + for name, expM := range exp.Methods { + gotM, exist := abi.Methods[name] + if !exist { + t.Errorf("Missing expected method %v", name) + } + if !reflect.DeepEqual(gotM, expM) { + t.Errorf("\nGot abi method: \n%v\ndoes not match expected method\n%v", gotM, expM) + } + } + + for name, gotM := range abi.Methods { + expM, exist := exp.Methods[name] + if !exist { + t.Errorf("Found extra method %v", name) + } + if !reflect.DeepEqual(gotM, expM) { + t.Errorf("\nGot abi method: \n%v\ndoes not match expected method\n%v", gotM, expM) + } + } +} + +func TestInvalidABI(t *testing.T) { + json := `[{ "type" : "function", "name" : "", "constant" : fals }]` + _, err := JSON(strings.NewReader(json)) + if err == nil { + t.Fatal("invalid json should produce error") + } + json2 := `[{ "type" : "function", "name" : "send", "constant" : false, "inputs" : [ { "name" : "amount", "typ" : "uint256" } ] }]` + _, err = JSON(strings.NewReader(json2)) + if err == nil { + t.Fatal("invalid json should produce error") + } +} + +// TestConstructor tests a constructor function. +// The test is based on the following contract: +// contract TestConstructor { +// constructor(uint256 a, uint256 b) public{} +// } +func TestConstructor(t *testing.T) { + json := `[{ "inputs": [{"internalType": "uint256","name": "a","type": "uint256" },{ "internalType": "uint256","name": "b","type": "uint256"}],"stateMutability": "nonpayable","type": "constructor"}]` + method := NewMethod("", "", Constructor, "nonpayable", false, false, []Argument{{"a", Uint256, false}, {"b", Uint256, false}}, nil) + // Test from JSON + abi, err := JSON(strings.NewReader(json)) + if err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(abi.Constructor, method) { + t.Error("Missing expected constructor") + } + // Test pack/unpack + packed, err := abi.Pack("", big.NewInt(1), big.NewInt(2)) + if err != nil { + t.Error(err) + } + unpacked, err := abi.Constructor.Inputs.Unpack(packed) + if err != nil { + t.Error(err) + } + + if !reflect.DeepEqual(unpacked[0], big.NewInt(1)) { + t.Error("Unable to pack/unpack from constructor") + } + if !reflect.DeepEqual(unpacked[1], big.NewInt(2)) { + t.Error("Unable to pack/unpack from constructor") + } +} + +func TestTestNumbers(t *testing.T) { + abi, err := JSON(strings.NewReader(jsondata)) + if err != nil { + t.Fatal(err) + } + + if _, err := abi.Pack("balance"); err != nil { + t.Error(err) + } + + if _, err := abi.Pack("balance", 1); err == nil { + t.Error("expected error for balance(1)") + } + + if _, err := abi.Pack("doesntexist", nil); err == nil { + t.Errorf("doesntexist shouldn't exist") + } + + if _, err := abi.Pack("doesntexist", 1); err == nil { + t.Errorf("doesntexist(1) shouldn't exist") + } + + if _, err := abi.Pack("send", big.NewInt(1000)); err != nil { + t.Error(err) + } + + i := new(int) + *i = 1000 + if _, err := abi.Pack("send", i); err == nil { + t.Errorf("expected send( ptr ) to throw, requires *big.Int instead of *int") + } + + if _, err := abi.Pack("test", uint32(1000)); err != nil { + t.Error(err) + } +} + +func TestMethodSignature(t *testing.T) { + m := NewMethod("foo", "foo", Function, "", false, false, []Argument{{"bar", String, false}, {"baz", String, false}}, nil) + exp := "foo(string,string)" + if m.Sig != exp { + t.Error("signature mismatch", exp, "!=", m.Sig) + } + + idexp := crypto.Keccak256([]byte(exp))[:4] + if !bytes.Equal(m.ID, idexp) { + t.Errorf("expected ids to match %x != %x", m.ID, idexp) + } + + m = NewMethod("foo", "foo", Function, "", false, false, []Argument{{"bar", Uint256, false}}, nil) + exp = "foo(uint256)" + if m.Sig != exp { + t.Error("signature mismatch", exp, "!=", m.Sig) + } + + // Method with tuple arguments + s, _ := NewType("tuple", "", []ArgumentMarshaling{ + {Name: "a", Type: "int256"}, + {Name: "b", Type: "int256[]"}, + {Name: "c", Type: "tuple[]", Components: []ArgumentMarshaling{ + {Name: "x", Type: "int256"}, + {Name: "y", Type: "int256"}, + }}, + {Name: "d", Type: "tuple[2]", Components: []ArgumentMarshaling{ + {Name: "x", Type: "int256"}, + {Name: "y", Type: "int256"}, + }}, + }) + m = NewMethod("foo", "foo", Function, "", false, false, []Argument{{"s", s, false}, {"bar", String, false}}, nil) + exp = "foo((int256,int256[],(int256,int256)[],(int256,int256)[2]),string)" + if m.Sig != exp { + t.Error("signature mismatch", exp, "!=", m.Sig) + } +} + +func TestOverloadedMethodSignature(t *testing.T) { + json := `[{"constant":true,"inputs":[{"name":"i","type":"uint256"},{"name":"j","type":"uint256"}],"name":"foo","outputs":[],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"i","type":"uint256"}],"name":"foo","outputs":[],"payable":false,"stateMutability":"pure","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"i","type":"uint256"}],"name":"bar","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"i","type":"uint256"},{"indexed":false,"name":"j","type":"uint256"}],"name":"bar","type":"event"}]` + abi, err := JSON(strings.NewReader(json)) + if err != nil { + t.Fatal(err) + } + check := func(name string, expect string, method bool) { + if method { + if abi.Methods[name].Sig != expect { + t.Fatalf("The signature of overloaded method mismatch, want %s, have %s", expect, abi.Methods[name].Sig) + } + } else { + if abi.Events[name].Sig != expect { + t.Fatalf("The signature of overloaded event mismatch, want %s, have %s", expect, abi.Events[name].Sig) + } + } + } + check("foo", "foo(uint256,uint256)", true) + check("foo0", "foo(uint256)", true) + check("bar", "bar(uint256)", false) + check("bar0", "bar(uint256,uint256)", false) +} + +func TestCustomErrors(t *testing.T) { + json := `[{ "inputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ],"name": "MyError", "type": "error"} ]` + abi, err := JSON(strings.NewReader(json)) + if err != nil { + t.Fatal(err) + } + check := func(name string, expect string) { + if abi.Errors[name].Sig != expect { + t.Fatalf("The signature of overloaded method mismatch, want %s, have %s", expect, abi.Methods[name].Sig) + } + } + check("MyError", "MyError(uint256)") +} + +func TestMultiPack(t *testing.T) { + abi, err := JSON(strings.NewReader(jsondata)) + if err != nil { + t.Fatal(err) + } + + sig := crypto.Keccak256([]byte("bar(uint32,uint16)"))[:4] + sig = append(sig, make([]byte, 64)...) + sig[35] = 10 + sig[67] = 11 + + packed, err := abi.Pack("bar", uint32(10), uint16(11)) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } +} + +func ExampleJSON() { + const definition = `[{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"isBar","outputs":[{"name":"","type":"bool"}],"type":"function"}]` + + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + panic(err) + } + out, err := abi.Pack("isBar", common.HexToAddress("01")) + if err != nil { + panic(err) + } + + fmt.Printf("%x\n", out) + // Output: + // 1f2c40920000000000000000000000000000000000000000000000000000000000000001 +} + +func TestInputVariableInputLength(t *testing.T) { + const definition = `[ + { "type" : "function", "name" : "strOne", "constant" : true, "inputs" : [ { "name" : "str", "type" : "string" } ] }, + { "type" : "function", "name" : "bytesOne", "constant" : true, "inputs" : [ { "name" : "str", "type" : "bytes" } ] }, + { "type" : "function", "name" : "strTwo", "constant" : true, "inputs" : [ { "name" : "str", "type" : "string" }, { "name" : "str1", "type" : "string" } ] } + ]` + + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + + // test one string + strin := "hello world" + strpack, err := abi.Pack("strOne", strin) + if err != nil { + t.Error(err) + } + + offset := make([]byte, 32) + offset[31] = 32 + length := make([]byte, 32) + length[31] = byte(len(strin)) + value := common.RightPadBytes([]byte(strin), 32) + exp := append(offset, append(length, value...)...) + + // ignore first 4 bytes of the output. This is the function identifier + strpack = strpack[4:] + if !bytes.Equal(strpack, exp) { + t.Errorf("expected %x, got %x\n", exp, strpack) + } + + // test one bytes + btspack, err := abi.Pack("bytesOne", []byte(strin)) + if err != nil { + t.Error(err) + } + // ignore first 4 bytes of the output. This is the function identifier + btspack = btspack[4:] + if !bytes.Equal(btspack, exp) { + t.Errorf("expected %x, got %x\n", exp, btspack) + } + + // test two strings + str1 := "hello" + str2 := "world" + str2pack, err := abi.Pack("strTwo", str1, str2) + if err != nil { + t.Error(err) + } + + offset1 := make([]byte, 32) + offset1[31] = 64 + length1 := make([]byte, 32) + length1[31] = byte(len(str1)) + value1 := common.RightPadBytes([]byte(str1), 32) + + offset2 := make([]byte, 32) + offset2[31] = 128 + length2 := make([]byte, 32) + length2[31] = byte(len(str2)) + value2 := common.RightPadBytes([]byte(str2), 32) + + exp2 := append(offset1, offset2...) + exp2 = append(exp2, append(length1, value1...)...) + exp2 = append(exp2, append(length2, value2...)...) + + // ignore first 4 bytes of the output. This is the function identifier + str2pack = str2pack[4:] + if !bytes.Equal(str2pack, exp2) { + t.Errorf("expected %x, got %x\n", exp, str2pack) + } + + // test two strings, first > 32, second < 32 + str1 = strings.Repeat("a", 33) + str2pack, err = abi.Pack("strTwo", str1, str2) + if err != nil { + t.Error(err) + } + + offset1 = make([]byte, 32) + offset1[31] = 64 + length1 = make([]byte, 32) + length1[31] = byte(len(str1)) + value1 = common.RightPadBytes([]byte(str1), 64) + offset2[31] = 160 + + exp2 = append(offset1, offset2...) + exp2 = append(exp2, append(length1, value1...)...) + exp2 = append(exp2, append(length2, value2...)...) + + // ignore first 4 bytes of the output. This is the function identifier + str2pack = str2pack[4:] + if !bytes.Equal(str2pack, exp2) { + t.Errorf("expected %x, got %x\n", exp, str2pack) + } + + // test two strings, first > 32, second >32 + str1 = strings.Repeat("a", 33) + str2 = strings.Repeat("a", 33) + str2pack, err = abi.Pack("strTwo", str1, str2) + if err != nil { + t.Error(err) + } + + offset1 = make([]byte, 32) + offset1[31] = 64 + length1 = make([]byte, 32) + length1[31] = byte(len(str1)) + value1 = common.RightPadBytes([]byte(str1), 64) + + offset2 = make([]byte, 32) + offset2[31] = 160 + length2 = make([]byte, 32) + length2[31] = byte(len(str2)) + value2 = common.RightPadBytes([]byte(str2), 64) + + exp2 = append(offset1, offset2...) + exp2 = append(exp2, append(length1, value1...)...) + exp2 = append(exp2, append(length2, value2...)...) + + // ignore first 4 bytes of the output. This is the function identifier + str2pack = str2pack[4:] + if !bytes.Equal(str2pack, exp2) { + t.Errorf("expected %x, got %x\n", exp, str2pack) + } +} + +func TestInputFixedArrayAndVariableInputLength(t *testing.T) { + abi, err := JSON(strings.NewReader(jsondata)) + if err != nil { + t.Error(err) + } + + // test string, fixed array uint256[2] + strin := "hello world" + arrin := [2]*big.Int{big.NewInt(1), big.NewInt(2)} + fixedArrStrPack, err := abi.Pack("fixedArrStr", strin, arrin) + if err != nil { + t.Error(err) + } + + // generate expected output + offset := make([]byte, 32) + offset[31] = 96 + length := make([]byte, 32) + length[31] = byte(len(strin)) + strvalue := common.RightPadBytes([]byte(strin), 32) + arrinvalue1 := common.LeftPadBytes(arrin[0].Bytes(), 32) + arrinvalue2 := common.LeftPadBytes(arrin[1].Bytes(), 32) + exp := append(offset, arrinvalue1...) + exp = append(exp, arrinvalue2...) + exp = append(exp, append(length, strvalue...)...) + + // ignore first 4 bytes of the output. This is the function identifier + fixedArrStrPack = fixedArrStrPack[4:] + if !bytes.Equal(fixedArrStrPack, exp) { + t.Errorf("expected %x, got %x\n", exp, fixedArrStrPack) + } + + // test byte array, fixed array uint256[2] + bytesin := []byte(strin) + arrin = [2]*big.Int{big.NewInt(1), big.NewInt(2)} + fixedArrBytesPack, err := abi.Pack("fixedArrBytes", bytesin, arrin) + if err != nil { + t.Error(err) + } + + // generate expected output + offset = make([]byte, 32) + offset[31] = 96 + length = make([]byte, 32) + length[31] = byte(len(strin)) + strvalue = common.RightPadBytes([]byte(strin), 32) + arrinvalue1 = common.LeftPadBytes(arrin[0].Bytes(), 32) + arrinvalue2 = common.LeftPadBytes(arrin[1].Bytes(), 32) + exp = append(offset, arrinvalue1...) + exp = append(exp, arrinvalue2...) + exp = append(exp, append(length, strvalue...)...) + + // ignore first 4 bytes of the output. This is the function identifier + fixedArrBytesPack = fixedArrBytesPack[4:] + if !bytes.Equal(fixedArrBytesPack, exp) { + t.Errorf("expected %x, got %x\n", exp, fixedArrBytesPack) + } + + // test string, fixed array uint256[2], dynamic array uint256[] + strin = "hello world" + fixedarrin := [2]*big.Int{big.NewInt(1), big.NewInt(2)} + dynarrin := []*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)} + mixedArrStrPack, err := abi.Pack("mixedArrStr", strin, fixedarrin, dynarrin) + if err != nil { + t.Error(err) + } + + // generate expected output + stroffset := make([]byte, 32) + stroffset[31] = 128 + strlength := make([]byte, 32) + strlength[31] = byte(len(strin)) + strvalue = common.RightPadBytes([]byte(strin), 32) + fixedarrinvalue1 := common.LeftPadBytes(fixedarrin[0].Bytes(), 32) + fixedarrinvalue2 := common.LeftPadBytes(fixedarrin[1].Bytes(), 32) + dynarroffset := make([]byte, 32) + dynarroffset[31] = byte(160 + ((len(strin)/32)+1)*32) + dynarrlength := make([]byte, 32) + dynarrlength[31] = byte(len(dynarrin)) + dynarrinvalue1 := common.LeftPadBytes(dynarrin[0].Bytes(), 32) + dynarrinvalue2 := common.LeftPadBytes(dynarrin[1].Bytes(), 32) + dynarrinvalue3 := common.LeftPadBytes(dynarrin[2].Bytes(), 32) + exp = append(stroffset, fixedarrinvalue1...) + exp = append(exp, fixedarrinvalue2...) + exp = append(exp, dynarroffset...) + exp = append(exp, append(strlength, strvalue...)...) + dynarrarg := append(dynarrlength, dynarrinvalue1...) + dynarrarg = append(dynarrarg, dynarrinvalue2...) + dynarrarg = append(dynarrarg, dynarrinvalue3...) + exp = append(exp, dynarrarg...) + + // ignore first 4 bytes of the output. This is the function identifier + mixedArrStrPack = mixedArrStrPack[4:] + if !bytes.Equal(mixedArrStrPack, exp) { + t.Errorf("expected %x, got %x\n", exp, mixedArrStrPack) + } + + // test string, fixed array uint256[2], fixed array uint256[3] + strin = "hello world" + fixedarrin1 := [2]*big.Int{big.NewInt(1), big.NewInt(2)} + fixedarrin2 := [3]*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)} + doubleFixedArrStrPack, err := abi.Pack("doubleFixedArrStr", strin, fixedarrin1, fixedarrin2) + if err != nil { + t.Error(err) + } + + // generate expected output + stroffset = make([]byte, 32) + stroffset[31] = 192 + strlength = make([]byte, 32) + strlength[31] = byte(len(strin)) + strvalue = common.RightPadBytes([]byte(strin), 32) + fixedarrin1value1 := common.LeftPadBytes(fixedarrin1[0].Bytes(), 32) + fixedarrin1value2 := common.LeftPadBytes(fixedarrin1[1].Bytes(), 32) + fixedarrin2value1 := common.LeftPadBytes(fixedarrin2[0].Bytes(), 32) + fixedarrin2value2 := common.LeftPadBytes(fixedarrin2[1].Bytes(), 32) + fixedarrin2value3 := common.LeftPadBytes(fixedarrin2[2].Bytes(), 32) + exp = append(stroffset, fixedarrin1value1...) + exp = append(exp, fixedarrin1value2...) + exp = append(exp, fixedarrin2value1...) + exp = append(exp, fixedarrin2value2...) + exp = append(exp, fixedarrin2value3...) + exp = append(exp, append(strlength, strvalue...)...) + + // ignore first 4 bytes of the output. This is the function identifier + doubleFixedArrStrPack = doubleFixedArrStrPack[4:] + if !bytes.Equal(doubleFixedArrStrPack, exp) { + t.Errorf("expected %x, got %x\n", exp, doubleFixedArrStrPack) + } + + // test string, fixed array uint256[2], dynamic array uint256[], fixed array uint256[3] + strin = "hello world" + fixedarrin1 = [2]*big.Int{big.NewInt(1), big.NewInt(2)} + dynarrin = []*big.Int{big.NewInt(1), big.NewInt(2)} + fixedarrin2 = [3]*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)} + multipleMixedArrStrPack, err := abi.Pack("multipleMixedArrStr", strin, fixedarrin1, dynarrin, fixedarrin2) + if err != nil { + t.Error(err) + } + + // generate expected output + stroffset = make([]byte, 32) + stroffset[31] = 224 + strlength = make([]byte, 32) + strlength[31] = byte(len(strin)) + strvalue = common.RightPadBytes([]byte(strin), 32) + fixedarrin1value1 = common.LeftPadBytes(fixedarrin1[0].Bytes(), 32) + fixedarrin1value2 = common.LeftPadBytes(fixedarrin1[1].Bytes(), 32) + dynarroffset = math.U256Bytes(big.NewInt(int64(256 + ((len(strin)/32)+1)*32))) + dynarrlength = make([]byte, 32) + dynarrlength[31] = byte(len(dynarrin)) + dynarrinvalue1 = common.LeftPadBytes(dynarrin[0].Bytes(), 32) + dynarrinvalue2 = common.LeftPadBytes(dynarrin[1].Bytes(), 32) + fixedarrin2value1 = common.LeftPadBytes(fixedarrin2[0].Bytes(), 32) + fixedarrin2value2 = common.LeftPadBytes(fixedarrin2[1].Bytes(), 32) + fixedarrin2value3 = common.LeftPadBytes(fixedarrin2[2].Bytes(), 32) + exp = append(stroffset, fixedarrin1value1...) + exp = append(exp, fixedarrin1value2...) + exp = append(exp, dynarroffset...) + exp = append(exp, fixedarrin2value1...) + exp = append(exp, fixedarrin2value2...) + exp = append(exp, fixedarrin2value3...) + exp = append(exp, append(strlength, strvalue...)...) + dynarrarg = append(dynarrlength, dynarrinvalue1...) + dynarrarg = append(dynarrarg, dynarrinvalue2...) + exp = append(exp, dynarrarg...) + + // ignore first 4 bytes of the output. This is the function identifier + multipleMixedArrStrPack = multipleMixedArrStrPack[4:] + if !bytes.Equal(multipleMixedArrStrPack, exp) { + t.Errorf("expected %x, got %x\n", exp, multipleMixedArrStrPack) + } +} + +func TestDefaultFunctionParsing(t *testing.T) { + const definition = `[{ "name" : "balance", "type" : "function" }]` + + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + + if _, ok := abi.Methods["balance"]; !ok { + t.Error("expected 'balance' to be present") + } +} + +func TestBareEvents(t *testing.T) { + const definition = `[ + { "type" : "event", "name" : "balance" }, + { "type" : "event", "name" : "anon", "anonymous" : true}, + { "type" : "event", "name" : "args", "inputs" : [{ "indexed":false, "name":"arg0", "type":"uint256" }, { "indexed":true, "name":"arg1", "type":"address" }] }, + { "type" : "event", "name" : "tuple", "inputs" : [{ "indexed":false, "name":"t", "type":"tuple", "components":[{"name":"a", "type":"uint256"}] }, { "indexed":true, "name":"arg1", "type":"address" }] } + ]` + + tuple, _ := NewType("tuple", "", []ArgumentMarshaling{{Name: "a", Type: "uint256"}}) + + expectedEvents := map[string]struct { + Anonymous bool + Args []Argument + }{ + "balance": {false, nil}, + "anon": {true, nil}, + "args": {false, []Argument{ + {Name: "arg0", Type: Uint256, Indexed: false}, + {Name: "arg1", Type: Address, Indexed: true}, + }}, + "tuple": {false, []Argument{ + {Name: "t", Type: tuple, Indexed: false}, + {Name: "arg1", Type: Address, Indexed: true}, + }}, + } + + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + + if len(abi.Events) != len(expectedEvents) { + t.Fatalf("invalid number of events after parsing, want %d, got %d", len(expectedEvents), len(abi.Events)) + } + + for name, exp := range expectedEvents { + got, ok := abi.Events[name] + if !ok { + t.Errorf("could not found event %s", name) + continue + } + if got.Anonymous != exp.Anonymous { + t.Errorf("invalid anonymous indication for event %s, want %v, got %v", name, exp.Anonymous, got.Anonymous) + } + if len(got.Inputs) != len(exp.Args) { + t.Errorf("invalid number of args, want %d, got %d", len(exp.Args), len(got.Inputs)) + continue + } + for i, arg := range exp.Args { + if arg.Name != got.Inputs[i].Name { + t.Errorf("events[%s].Input[%d] has an invalid name, want %s, got %s", name, i, arg.Name, got.Inputs[i].Name) + } + if arg.Indexed != got.Inputs[i].Indexed { + t.Errorf("events[%s].Input[%d] has an invalid indexed indication, want %v, got %v", name, i, arg.Indexed, got.Inputs[i].Indexed) + } + if arg.Type.T != got.Inputs[i].Type.T { + t.Errorf("events[%s].Input[%d] has an invalid type, want %x, got %x", name, i, arg.Type.T, got.Inputs[i].Type.T) + } + } + } +} + +// TestUnpackEvent is based on this contract: +// contract T { +// event received(address sender, uint amount, bytes memo); +// event receivedAddr(address sender); +// function receive(bytes memo) external payable { +// received(msg.sender, msg.value, memo); +// receivedAddr(msg.sender); +// } +// } +// When receive("X") is called with sender 0x00... and value 1, it produces this tx receipt: +// receipt{status=1 cgas=23949 bloom=00000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000040200000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 logs=[log: b6818c8064f645cd82d99b59a1a267d6d61117ef [75fd880d39c1daf53b6547ab6cb59451fc6452d27caa90e5b6649dd8293b9eed] 000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158 9ae378b6d4409eada347a5dc0c180f186cb62dc68fcc0f043425eb917335aa28 0 95d429d309bb9d753954195fe2d69bd140b4ae731b9b5b605c34323de162cf00 0]} +func TestUnpackEvent(t *testing.T) { + const abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"receive","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"}],"name":"receivedAddr","type":"event"}]` + abi, err := JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + + const hexdata = `000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158` + data, err := hex.DecodeString(hexdata) + if err != nil { + t.Fatal(err) + } + if len(data)%32 == 0 { + t.Errorf("len(data) is %d, want a non-multiple of 32", len(data)) + } + + type ReceivedEvent struct { + Sender common.Address + Amount *big.Int + Memo []byte + } + var ev ReceivedEvent + + err = abi.UnpackIntoInterface(&ev, "received", data) + if err != nil { + t.Error(err) + } + + type ReceivedAddrEvent struct { + Sender common.Address + } + var receivedAddrEv ReceivedAddrEvent + err = abi.UnpackIntoInterface(&receivedAddrEv, "receivedAddr", data) + if err != nil { + t.Error(err) + } +} + +func TestUnpackEventIntoMap(t *testing.T) { + const abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"receive","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"}],"name":"receivedAddr","type":"event"}]` + abi, err := JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + + const hexdata = `000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158` + data, err := hex.DecodeString(hexdata) + if err != nil { + t.Fatal(err) + } + if len(data)%32 == 0 { + t.Errorf("len(data) is %d, want a non-multiple of 32", len(data)) + } + + receivedMap := map[string]interface{}{} + expectedReceivedMap := map[string]interface{}{ + "sender": common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2"), + "amount": big.NewInt(1), + "memo": []byte{88}, + } + if err := abi.UnpackIntoMap(receivedMap, "received", data); err != nil { + t.Error(err) + } + if len(receivedMap) != 3 { + t.Error("unpacked `received` map expected to have length 3") + } + if receivedMap["sender"] != expectedReceivedMap["sender"] { + t.Error("unpacked `received` map does not match expected map") + } + if receivedMap["amount"].(*big.Int).Cmp(expectedReceivedMap["amount"].(*big.Int)) != 0 { + t.Error("unpacked `received` map does not match expected map") + } + if !bytes.Equal(receivedMap["memo"].([]byte), expectedReceivedMap["memo"].([]byte)) { + t.Error("unpacked `received` map does not match expected map") + } + + receivedAddrMap := map[string]interface{}{} + if err = abi.UnpackIntoMap(receivedAddrMap, "receivedAddr", data); err != nil { + t.Error(err) + } + if len(receivedAddrMap) != 1 { + t.Error("unpacked `receivedAddr` map expected to have length 1") + } + if receivedAddrMap["sender"] != expectedReceivedMap["sender"] { + t.Error("unpacked `receivedAddr` map does not match expected map") + } +} + +func TestUnpackMethodIntoMap(t *testing.T) { + const abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"receive","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[],"name":"send","outputs":[{"name":"amount","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"addr","type":"address"}],"name":"get","outputs":[{"name":"hash","type":"bytes"}],"payable":true,"stateMutability":"payable","type":"function"}]` + abi, err := JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + const hexdata = `00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000015800000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000158000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000001580000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000015800000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000158` + data, err := hex.DecodeString(hexdata) + if err != nil { + t.Fatal(err) + } + if len(data)%32 != 0 { + t.Errorf("len(data) is %d, want a multiple of 32", len(data)) + } + + // Tests a method with no outputs + receiveMap := map[string]interface{}{} + if err = abi.UnpackIntoMap(receiveMap, "receive", data); err != nil { + t.Error(err) + } + if len(receiveMap) > 0 { + t.Error("unpacked `receive` map expected to have length 0") + } + + // Tests a method with only outputs + sendMap := map[string]interface{}{} + if err = abi.UnpackIntoMap(sendMap, "send", data); err != nil { + t.Error(err) + } + if len(sendMap) != 1 { + t.Error("unpacked `send` map expected to have length 1") + } + if sendMap["amount"].(*big.Int).Cmp(big.NewInt(1)) != 0 { + t.Error("unpacked `send` map expected `amount` value of 1") + } + + // Tests a method with outputs and inputs + getMap := map[string]interface{}{} + if err = abi.UnpackIntoMap(getMap, "get", data); err != nil { + t.Error(err) + } + if len(getMap) != 1 { + t.Error("unpacked `get` map expected to have length 1") + } + expectedBytes := []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 88, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 88, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 88, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 88, 0} + if !bytes.Equal(getMap["hash"].([]byte), expectedBytes) { + t.Errorf("unpacked `get` map expected `hash` value of %v", expectedBytes) + } +} + +func TestUnpackIntoMapNamingConflict(t *testing.T) { + // Two methods have the same name + var abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"get","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[],"name":"send","outputs":[{"name":"amount","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"addr","type":"address"}],"name":"get","outputs":[{"name":"hash","type":"bytes"}],"payable":true,"stateMutability":"payable","type":"function"}]` + abi, err := JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + var hexdata = `00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158` + data, err := hex.DecodeString(hexdata) + if err != nil { + t.Fatal(err) + } + if len(data)%32 == 0 { + t.Errorf("len(data) is %d, want a non-multiple of 32", len(data)) + } + getMap := map[string]interface{}{} + if err = abi.UnpackIntoMap(getMap, "get", data); err == nil { + t.Error("naming conflict between two methods; error expected") + } + + // Two events have the same name + abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"receive","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"}],"name":"received","type":"event"}]` + abi, err = JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + hexdata = `000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158` + data, err = hex.DecodeString(hexdata) + if err != nil { + t.Fatal(err) + } + if len(data)%32 == 0 { + t.Errorf("len(data) is %d, want a non-multiple of 32", len(data)) + } + receivedMap := map[string]interface{}{} + if err = abi.UnpackIntoMap(receivedMap, "received", data); err != nil { + t.Error("naming conflict between two events; no error expected") + } + + // Method and event have the same name + abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"received","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"}],"name":"receivedAddr","type":"event"}]` + abi, err = JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + if len(data)%32 == 0 { + t.Errorf("len(data) is %d, want a non-multiple of 32", len(data)) + } + if err = abi.UnpackIntoMap(receivedMap, "received", data); err == nil { + t.Error("naming conflict between an event and a method; error expected") + } + + // Conflict is case sensitive + abiJSON = `[{"constant":false,"inputs":[{"name":"memo","type":"bytes"}],"name":"received","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"Received","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"sender","type":"address"}],"name":"receivedAddr","type":"event"}]` + abi, err = JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + if len(data)%32 == 0 { + t.Errorf("len(data) is %d, want a non-multiple of 32", len(data)) + } + expectedReceivedMap := map[string]interface{}{ + "sender": common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2"), + "amount": big.NewInt(1), + "memo": []byte{88}, + } + if err = abi.UnpackIntoMap(receivedMap, "Received", data); err != nil { + t.Error(err) + } + if len(receivedMap) != 3 { + t.Error("unpacked `received` map expected to have length 3") + } + if receivedMap["sender"] != expectedReceivedMap["sender"] { + t.Error("unpacked `received` map does not match expected map") + } + if receivedMap["amount"].(*big.Int).Cmp(expectedReceivedMap["amount"].(*big.Int)) != 0 { + t.Error("unpacked `received` map does not match expected map") + } + if !bytes.Equal(receivedMap["memo"].([]byte), expectedReceivedMap["memo"].([]byte)) { + t.Error("unpacked `received` map does not match expected map") + } +} + +func TestABI_MethodById(t *testing.T) { + abi, err := JSON(strings.NewReader(jsondata)) + if err != nil { + t.Fatal(err) + } + for name, m := range abi.Methods { + a := fmt.Sprintf("%v", m) + m2, err := abi.MethodById(m.ID) + if err != nil { + t.Fatalf("Failed to look up ABI method: %v", err) + } + b := fmt.Sprintf("%v", m2) + if a != b { + t.Errorf("Method %v (id %x) not 'findable' by id in ABI", name, m.ID) + } + } + // test unsuccessful lookups + if _, err = abi.MethodById(crypto.Keccak256()); err == nil { + t.Error("Expected error: no method with this id") + } + // Also test empty + if _, err := abi.MethodById([]byte{0x00}); err == nil { + t.Errorf("Expected error, too short to decode data") + } + if _, err := abi.MethodById([]byte{}); err == nil { + t.Errorf("Expected error, too short to decode data") + } + if _, err := abi.MethodById(nil); err == nil { + t.Errorf("Expected error, nil is short to decode data") + } +} + +func TestABI_EventById(t *testing.T) { + tests := []struct { + name string + json string + event string + }{ + { + name: "", + json: `[ + {"type":"event","name":"received","anonymous":false,"inputs":[ + {"indexed":false,"name":"sender","type":"address"}, + {"indexed":false,"name":"amount","type":"uint256"}, + {"indexed":false,"name":"memo","type":"bytes"} + ] + }]`, + event: "received(address,uint256,bytes)", + }, { + name: "", + json: `[ + { "constant": true, "inputs": [], "name": "name", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, + { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "approve", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, + { "constant": true, "inputs": [], "name": "totalSupply", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, + { "constant": false, "inputs": [ { "name": "_from", "type": "address" }, { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, + { "constant": true, "inputs": [], "name": "decimals", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, + { "constant": true, "inputs": [ { "name": "_owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "name": "balance", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, + { "constant": true, "inputs": [], "name": "symbol", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, + { "constant": false, "inputs": [ { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, + { "constant": true, "inputs": [ { "name": "_owner", "type": "address" }, { "name": "_spender", "type": "address" } ], "name": "allowance", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, + { "payable": true, "stateMutability": "payable", "type": "fallback" }, + { "anonymous": false, "inputs": [ { "indexed": true, "name": "owner", "type": "address" }, { "indexed": true, "name": "spender", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, + { "anonymous": false, "inputs": [ { "indexed": true, "name": "from", "type": "address" }, { "indexed": true, "name": "to", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" } + ]`, + event: "Transfer(address,address,uint256)", + }, + } + + for testnum, test := range tests { + abi, err := JSON(strings.NewReader(test.json)) + if err != nil { + t.Error(err) + } + + topic := test.event + topicID := crypto.Keccak256Hash([]byte(topic)) + + event, err := abi.EventByID(topicID) + if err != nil { + t.Fatalf("Failed to look up ABI method: %v, test #%d", err, testnum) + } + if event == nil { + t.Errorf("We should find a event for topic %s, test #%d", topicID.Hex(), testnum) + } + + if event.ID != topicID { + t.Errorf("Event id %s does not match topic %s, test #%d", event.ID.Hex(), topicID.Hex(), testnum) + } + + unknowntopicID := crypto.Keccak256Hash([]byte("unknownEvent")) + unknownEvent, err := abi.EventByID(unknowntopicID) + if err == nil { + t.Errorf("EventByID should return an error if a topic is not found, test #%d", testnum) + } + if unknownEvent != nil { + t.Errorf("We should not find any event for topic %s, test #%d", unknowntopicID.Hex(), testnum) + } + } +} + +// TestDoubleDuplicateMethodNames checks that if transfer0 already exists, there won't be a name +// conflict and that the second transfer method will be renamed transfer1. +func TestDoubleDuplicateMethodNames(t *testing.T) { + abiJSON := `[{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"}],"name":"transfer","outputs":[{"name":"ok","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"},{"name":"data","type":"bytes"}],"name":"transfer0","outputs":[{"name":"ok","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"},{"name":"data","type":"bytes"},{"name":"customFallback","type":"string"}],"name":"transfer","outputs":[{"name":"ok","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"}]` + contractAbi, err := JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + if _, ok := contractAbi.Methods["transfer"]; !ok { + t.Fatalf("Could not find original method") + } + if _, ok := contractAbi.Methods["transfer0"]; !ok { + t.Fatalf("Could not find duplicate method") + } + if _, ok := contractAbi.Methods["transfer1"]; !ok { + t.Fatalf("Could not find duplicate method") + } + if _, ok := contractAbi.Methods["transfer2"]; ok { + t.Fatalf("Should not have found extra method") + } +} + +// TestDoubleDuplicateEventNames checks that if send0 already exists, there won't be a name +// conflict and that the second send event will be renamed send1. +// The test runs the abi of the following contract. +// contract DuplicateEvent { +// event send(uint256 a); +// event send0(); +// event send(); +// } +func TestDoubleDuplicateEventNames(t *testing.T) { + abiJSON := `[{"anonymous": false,"inputs": [{"indexed": false,"internalType": "uint256","name": "a","type": "uint256"}],"name": "send","type": "event"},{"anonymous": false,"inputs": [],"name": "send0","type": "event"},{ "anonymous": false, "inputs": [],"name": "send","type": "event"}]` + contractAbi, err := JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + if _, ok := contractAbi.Events["send"]; !ok { + t.Fatalf("Could not find original event") + } + if _, ok := contractAbi.Events["send0"]; !ok { + t.Fatalf("Could not find duplicate event") + } + if _, ok := contractAbi.Events["send1"]; !ok { + t.Fatalf("Could not find duplicate event") + } + if _, ok := contractAbi.Events["send2"]; ok { + t.Fatalf("Should not have found extra event") + } +} + +// TestUnnamedEventParam checks that an event with unnamed parameters is +// correctly handled. +// The test runs the abi of the following contract. +// contract TestEvent { +// event send(uint256, uint256); +// } +func TestUnnamedEventParam(t *testing.T) { + abiJSON := `[{ "anonymous": false, "inputs": [{ "indexed": false,"internalType": "uint256", "name": "","type": "uint256"},{"indexed": false,"internalType": "uint256","name": "","type": "uint256"}],"name": "send","type": "event"}]` + contractAbi, err := JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Fatal(err) + } + + event, ok := contractAbi.Events["send"] + if !ok { + t.Fatalf("Could not find event") + } + if event.Inputs[0].Name != "arg0" { + t.Fatalf("Could not find input") + } + if event.Inputs[1].Name != "arg1" { + t.Fatalf("Could not find input") + } +} + +func TestUnpackRevert(t *testing.T) { + t.Parallel() + + var cases = []struct { + input string + expect string + expectErr error + }{ + {"", "", errors.New("invalid data for unpacking")}, + {"08c379a1", "", errors.New("invalid data for unpacking")}, + {"08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000d72657665727420726561736f6e00000000000000000000000000000000000000", "revert reason", nil}, + } + for index, c := range cases { + t.Run(fmt.Sprintf("case %d", index), func(t *testing.T) { + got, err := UnpackRevert(common.Hex2Bytes(c.input)) + if c.expectErr != nil { + if err == nil { + t.Fatalf("Expected non-nil error") + } + if err.Error() != c.expectErr.Error() { + t.Fatalf("Expected error mismatch, want %v, got %v", c.expectErr, err) + } + return + } + if c.expect != got { + t.Fatalf("Output mismatch, want %v, got %v", c.expect, got) + } + }) + } +} diff --git a/accounts/abi/argument.go b/accounts/abi/argument.go new file mode 100644 index 0000000000..a95cd314b9 --- /dev/null +++ b/accounts/abi/argument.go @@ -0,0 +1,288 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "encoding/json" + "fmt" + "reflect" + "strings" +) + +// Argument holds the name of the argument and the corresponding type. +// Types are used when packing and testing arguments. +type Argument struct { + Name string + Type Type + Indexed bool // indexed is only used by events +} + +type Arguments []Argument + +type ArgumentMarshaling struct { + Name string + Type string + InternalType string + Components []ArgumentMarshaling + Indexed bool +} + +// UnmarshalJSON implements json.Unmarshaler interface. +func (argument *Argument) UnmarshalJSON(data []byte) error { + var arg ArgumentMarshaling + err := json.Unmarshal(data, &arg) + if err != nil { + return fmt.Errorf("argument json err: %v", err) + } + + argument.Type, err = NewType(arg.Type, arg.InternalType, arg.Components) + if err != nil { + return err + } + argument.Name = arg.Name + argument.Indexed = arg.Indexed + + return nil +} + +// NonIndexed returns the arguments with indexed arguments filtered out. +func (arguments Arguments) NonIndexed() Arguments { + var ret []Argument + for _, arg := range arguments { + if !arg.Indexed { + ret = append(ret, arg) + } + } + return ret +} + +// isTuple returns true for non-atomic constructs, like (uint,uint) or uint[]. +func (arguments Arguments) isTuple() bool { + return len(arguments) > 1 +} + +// Unpack performs the operation hexdata -> Go format. +func (arguments Arguments) Unpack(data []byte) ([]interface{}, error) { + if len(data) == 0 { + if len(arguments) != 0 { + return nil, fmt.Errorf("abi: attempting to unmarshall an empty string while arguments are expected") + } + // Nothing to unmarshal, return default variables + nonIndexedArgs := arguments.NonIndexed() + defaultVars := make([]interface{}, len(nonIndexedArgs)) + for index, arg := range nonIndexedArgs { + defaultVars[index] = reflect.New(arg.Type.GetType()) + } + return defaultVars, nil + } + return arguments.UnpackValues(data) +} + +// UnpackIntoMap performs the operation hexdata -> mapping of argument name to argument value. +func (arguments Arguments) UnpackIntoMap(v map[string]interface{}, data []byte) error { + // Make sure map is not nil + if v == nil { + return fmt.Errorf("abi: cannot unpack into a nil map") + } + if len(data) == 0 { + if len(arguments) != 0 { + return fmt.Errorf("abi: attempting to unmarshall an empty string while arguments are expected") + } + return nil // Nothing to unmarshal, return + } + marshalledValues, err := arguments.UnpackValues(data) + if err != nil { + return err + } + for i, arg := range arguments.NonIndexed() { + v[arg.Name] = marshalledValues[i] + } + return nil +} + +// Copy performs the operation go format -> provided struct. +func (arguments Arguments) Copy(v interface{}, values []interface{}) error { + // make sure the passed value is arguments pointer + if reflect.Ptr != reflect.ValueOf(v).Kind() { + return fmt.Errorf("abi: Unpack(non-pointer %T)", v) + } + if len(values) == 0 { + if len(arguments) != 0 { + return fmt.Errorf("abi: attempting to copy no values while %d arguments are expected", len(arguments)) + } + return nil // Nothing to copy, return + } + if arguments.isTuple() { + return arguments.copyTuple(v, values) + } + return arguments.copyAtomic(v, values[0]) +} + +// unpackAtomic unpacks ( hexdata -> go ) a single value +func (arguments Arguments) copyAtomic(v interface{}, marshalledValues interface{}) error { + dst := reflect.ValueOf(v).Elem() + src := reflect.ValueOf(marshalledValues) + + if dst.Kind() == reflect.Struct { + return set(dst.Field(0), src) + } + return set(dst, src) +} + +// copyTuple copies a batch of values from marshalledValues to v. +func (arguments Arguments) copyTuple(v interface{}, marshalledValues []interface{}) error { + value := reflect.ValueOf(v).Elem() + nonIndexedArgs := arguments.NonIndexed() + + switch value.Kind() { + case reflect.Struct: + argNames := make([]string, len(nonIndexedArgs)) + for i, arg := range nonIndexedArgs { + argNames[i] = arg.Name + } + var err error + abi2struct, err := mapArgNamesToStructFields(argNames, value) + if err != nil { + return err + } + for i, arg := range nonIndexedArgs { + field := value.FieldByName(abi2struct[arg.Name]) + if !field.IsValid() { + return fmt.Errorf("abi: field %s can't be found in the given value", arg.Name) + } + if err := set(field, reflect.ValueOf(marshalledValues[i])); err != nil { + return err + } + } + case reflect.Slice, reflect.Array: + if value.Len() < len(marshalledValues) { + return fmt.Errorf("abi: insufficient number of arguments for unpack, want %d, got %d", len(arguments), value.Len()) + } + for i := range nonIndexedArgs { + if err := set(value.Index(i), reflect.ValueOf(marshalledValues[i])); err != nil { + return err + } + } + default: + return fmt.Errorf("abi:[2] cannot unmarshal tuple in to %v", value.Type()) + } + return nil +} + +// UnpackValues can be used to unpack ABI-encoded hexdata according to the ABI-specification, +// without supplying a struct to unpack into. Instead, this method returns a list containing the +// values. An atomic argument will be a list with one element. +func (arguments Arguments) UnpackValues(data []byte) ([]interface{}, error) { + nonIndexedArgs := arguments.NonIndexed() + retval := make([]interface{}, 0, len(nonIndexedArgs)) + virtualArgs := 0 + for index, arg := range nonIndexedArgs { + marshalledValue, err := toGoType((index+virtualArgs)*32, arg.Type, data) + if arg.Type.T == ArrayTy && !isDynamicType(arg.Type) { + // If we have a static array, like [3]uint256, these are coded as + // just like uint256,uint256,uint256. + // This means that we need to add two 'virtual' arguments when + // we count the index from now on. + // + // Array values nested multiple levels deep are also encoded inline: + // [2][3]uint256: uint256,uint256,uint256,uint256,uint256,uint256 + // + // Calculate the full array size to get the correct offset for the next argument. + // Decrement it by 1, as the normal index increment is still applied. + virtualArgs += getTypeSize(arg.Type)/32 - 1 + } else if arg.Type.T == TupleTy && !isDynamicType(arg.Type) { + // If we have a static tuple, like (uint256, bool, uint256), these are + // coded as just like uint256,bool,uint256 + virtualArgs += getTypeSize(arg.Type)/32 - 1 + } + if err != nil { + return nil, err + } + retval = append(retval, marshalledValue) + } + return retval, nil +} + +// PackValues performs the operation Go format -> Hexdata. +// It is the semantic opposite of UnpackValues. +func (arguments Arguments) PackValues(args []interface{}) ([]byte, error) { + return arguments.Pack(args...) +} + +// Pack performs the operation Go format -> Hexdata. +func (arguments Arguments) Pack(args ...interface{}) ([]byte, error) { + // Make sure arguments match up and pack them + abiArgs := arguments + if len(args) != len(abiArgs) { + return nil, fmt.Errorf("argument count mismatch: got %d for %d", len(args), len(abiArgs)) + } + // variable input is the output appended at the end of packed + // output. This is used for strings and bytes types input. + var variableInput []byte + + // input offset is the bytes offset for packed output + inputOffset := 0 + for _, abiArg := range abiArgs { + inputOffset += getTypeSize(abiArg.Type) + } + var ret []byte + for i, a := range args { + input := abiArgs[i] + // pack the input + packed, err := input.Type.pack(reflect.ValueOf(a)) + if err != nil { + return nil, err + } + // check for dynamic types + if isDynamicType(input.Type) { + // set the offset + ret = append(ret, packNum(reflect.ValueOf(inputOffset))...) + // calculate next offset + inputOffset += len(packed) + // append to variable input + variableInput = append(variableInput, packed...) + } else { + // append the packed value to the input + ret = append(ret, packed...) + } + } + // append the variable input at the end of the packed input + ret = append(ret, variableInput...) + + return ret, nil +} + +// ToCamelCase converts an under-score string to a camel-case string +func ToCamelCase(input string) string { + parts := strings.Split(input, "_") + for i, s := range parts { + if len(s) > 0 { + parts[i] = strings.ToUpper(s[:1]) + s[1:] + } + } + return strings.Join(parts, "") +} diff --git a/accounts/abi/bind/auth.go b/accounts/abi/bind/auth.go new file mode 100644 index 0000000000..d2c32a5195 --- /dev/null +++ b/accounts/abi/bind/auth.go @@ -0,0 +1,190 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind + +import ( + "context" + "crypto/ecdsa" + "errors" + "io" + "io/ioutil" + "math/big" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/accounts/external" + "github.com/ava-labs/subnet-evm/accounts/keystore" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" +) + +// ErrNoChainID is returned whenever the user failed to specify a chain id. +var ErrNoChainID = errors.New("no chain id specified") + +// ErrNotAuthorized is returned when an account is not properly unlocked. +var ErrNotAuthorized = errors.New("not authorized to sign this account") + +// NewTransactor is a utility method to easily create a transaction signer from +// an encrypted json key stream and the associated passphrase. +// +// Deprecated: Use NewTransactorWithChainID instead. +func NewTransactor(keyin io.Reader, passphrase string) (*TransactOpts, error) { + log.Warn("WARNING: NewTransactor has been deprecated in favour of NewTransactorWithChainID") + json, err := ioutil.ReadAll(keyin) + if err != nil { + return nil, err + } + key, err := keystore.DecryptKey(json, passphrase) + if err != nil { + return nil, err + } + return NewKeyedTransactor(key.PrivateKey), nil +} + +// NewKeyStoreTransactor is a utility method to easily create a transaction signer from +// an decrypted key from a keystore. +// +// Deprecated: Use NewKeyStoreTransactorWithChainID instead. +func NewKeyStoreTransactor(keystore *keystore.KeyStore, account accounts.Account) (*TransactOpts, error) { + log.Warn("WARNING: NewKeyStoreTransactor has been deprecated in favour of NewTransactorWithChainID") + signer := types.HomesteadSigner{} + return &TransactOpts{ + From: account.Address, + Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) { + if address != account.Address { + return nil, ErrNotAuthorized + } + signature, err := keystore.SignHash(account, signer.Hash(tx).Bytes()) + if err != nil { + return nil, err + } + return tx.WithSignature(signer, signature) + }, + Context: context.Background(), + }, nil +} + +// NewKeyedTransactor is a utility method to easily create a transaction signer +// from a single private key. +// +// Deprecated: Use NewKeyedTransactorWithChainID instead. +func NewKeyedTransactor(key *ecdsa.PrivateKey) *TransactOpts { + log.Warn("WARNING: NewKeyedTransactor has been deprecated in favour of NewKeyedTransactorWithChainID") + keyAddr := crypto.PubkeyToAddress(key.PublicKey) + signer := types.HomesteadSigner{} + return &TransactOpts{ + From: keyAddr, + Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) { + if address != keyAddr { + return nil, ErrNotAuthorized + } + signature, err := crypto.Sign(signer.Hash(tx).Bytes(), key) + if err != nil { + return nil, err + } + return tx.WithSignature(signer, signature) + }, + Context: context.Background(), + } +} + +// NewTransactorWithChainID is a utility method to easily create a transaction signer from +// an encrypted json key stream and the associated passphrase. +func NewTransactorWithChainID(keyin io.Reader, passphrase string, chainID *big.Int) (*TransactOpts, error) { + json, err := ioutil.ReadAll(keyin) + if err != nil { + return nil, err + } + key, err := keystore.DecryptKey(json, passphrase) + if err != nil { + return nil, err + } + return NewKeyedTransactorWithChainID(key.PrivateKey, chainID) +} + +// NewKeyStoreTransactorWithChainID is a utility method to easily create a transaction signer from +// an decrypted key from a keystore. +func NewKeyStoreTransactorWithChainID(keystore *keystore.KeyStore, account accounts.Account, chainID *big.Int) (*TransactOpts, error) { + if chainID == nil { + return nil, ErrNoChainID + } + signer := types.LatestSignerForChainID(chainID) + return &TransactOpts{ + From: account.Address, + Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) { + if address != account.Address { + return nil, ErrNotAuthorized + } + signature, err := keystore.SignHash(account, signer.Hash(tx).Bytes()) + if err != nil { + return nil, err + } + return tx.WithSignature(signer, signature) + }, + Context: context.Background(), + }, nil +} + +// NewKeyedTransactorWithChainID is a utility method to easily create a transaction signer +// from a single private key. +func NewKeyedTransactorWithChainID(key *ecdsa.PrivateKey, chainID *big.Int) (*TransactOpts, error) { + keyAddr := crypto.PubkeyToAddress(key.PublicKey) + if chainID == nil { + return nil, ErrNoChainID + } + signer := types.LatestSignerForChainID(chainID) + return &TransactOpts{ + From: keyAddr, + Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) { + if address != keyAddr { + return nil, ErrNotAuthorized + } + signature, err := crypto.Sign(signer.Hash(tx).Bytes(), key) + if err != nil { + return nil, err + } + return tx.WithSignature(signer, signature) + }, + Context: context.Background(), + }, nil +} + +// NewClefTransactor is a utility method to easily create a transaction signer +// with a clef backend. +func NewClefTransactor(clef *external.ExternalSigner, account accounts.Account) *TransactOpts { + return &TransactOpts{ + From: account.Address, + Signer: func(address common.Address, transaction *types.Transaction) (*types.Transaction, error) { + if address != account.Address { + return nil, ErrNotAuthorized + } + return clef.SignTx(account, transaction, nil) // Clef enforces its own chain id + }, + Context: context.Background(), + } +} diff --git a/accounts/abi/bind/backend.go b/accounts/abi/bind/backend.go new file mode 100644 index 0000000000..2fc19f108f --- /dev/null +++ b/accounts/abi/bind/backend.go @@ -0,0 +1,136 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind + +import ( + "context" + "errors" + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ethereum/go-ethereum/common" +) + +var ( + // ErrNoCode is returned by call and transact operations for which the requested + // recipient contract to operate on does not exist in the state db or does not + // have any code associated with it (i.e. suicided). + ErrNoCode = errors.New("no contract code at given address") + + // ErrNoAcceptedState is raised when attempting to perform a accepted state action + // on a backend that doesn't implement AcceptedContractCaller. + ErrNoAcceptedState = errors.New("backend does not support accepted state") + + // ErrNoCodeAfterDeploy is returned by WaitDeployed if contract creation leaves + // an empty contract behind. + ErrNoCodeAfterDeploy = errors.New("no contract code after deployment") +) + +// ContractCaller defines the methods needed to allow operating with a contract on a read +// only basis. +type ContractCaller interface { + // CodeAt returns the code of the given account. This is needed to differentiate + // between contract internal errors and the local chain being out of sync. + CodeAt(ctx context.Context, contract common.Address, blockNumber *big.Int) ([]byte, error) + + // CallContract executes an Ethereum contract call with the specified data as the + // input. + CallContract(ctx context.Context, call interfaces.CallMsg, blockNumber *big.Int) ([]byte, error) +} + +// AcceptedContractCaller defines methods to perform contract calls on the pending state. +// Call will try to discover this interface when access to the accepted state is requested. +// If the backend does not support the pending state, Call returns ErrNoAcceptedState. +type AcceptedContractCaller interface { + // AcceptedCodeAt returns the code of the given account in the accepted state. + AcceptedCodeAt(ctx context.Context, contract common.Address) ([]byte, error) + + // AcceptedCallContract executes an Ethereum contract call against the accepted state. + AcceptedCallContract(ctx context.Context, call interfaces.CallMsg) ([]byte, error) +} + +// ContractTransactor defines the methods needed to allow operating with a contract +// on a write only basis. Besides the transacting method, the remainder are helpers +// used when the user does not provide some needed values, but rather leaves it up +// to the transactor to decide. +type ContractTransactor interface { + // HeaderByNumber returns a block header from the current canonical chain. If + // number is nil, the latest known header is returned. + HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) + + // AcceptedCodeAt returns the code of the given account in the accepted state. + AcceptedCodeAt(ctx context.Context, account common.Address) ([]byte, error) + + // AcceptedNonceAt retrieves the current accepted nonce associated with an account. + AcceptedNonceAt(ctx context.Context, account common.Address) (uint64, error) + + // SuggestGasPrice retrieves the currently suggested gas price to allow a timely + // execution of a transaction. + SuggestGasPrice(ctx context.Context) (*big.Int, error) + + // SuggestGasTipCap retrieves the currently suggested 1559 priority fee to allow + // a timely execution of a transaction. + SuggestGasTipCap(ctx context.Context) (*big.Int, error) + + // EstimateGas tries to estimate the gas needed to execute a specific + // transaction based on the current pending state of the backend blockchain. + // There is no guarantee that this is the true gas limit requirement as other + // transactions may be added or removed by miners, but it should provide a basis + // for setting a reasonable default. + EstimateGas(ctx context.Context, call interfaces.CallMsg) (gas uint64, err error) + + // SendTransaction injects the transaction into the pending pool for execution. + SendTransaction(ctx context.Context, tx *types.Transaction) error +} + +// ContractFilterer defines the methods needed to access log events using one-off +// queries or continuous event subscriptions. +type ContractFilterer interface { + // FilterLogs executes a log filter operation, blocking during execution and + // returning all the results in one batch. + // + // TODO(karalabe): Deprecate when the subscription one can return past data too. + FilterLogs(ctx context.Context, query interfaces.FilterQuery) ([]types.Log, error) + + // SubscribeFilterLogs creates a background log filtering operation, returning + // a subscription immediately, which can be used to stream the found events. + SubscribeFilterLogs(ctx context.Context, query interfaces.FilterQuery, ch chan<- types.Log) (interfaces.Subscription, error) +} + +// DeployBackend wraps the operations needed by WaitMined and WaitDeployed. +type DeployBackend interface { + TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) + CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error) +} + +// ContractBackend defines the methods needed to work with contracts on a read-write basis. +type ContractBackend interface { + ContractCaller + ContractTransactor + ContractFilterer +} diff --git a/accounts/abi/bind/backends/simulated.go b/accounts/abi/bind/backends/simulated.go new file mode 100644 index 0000000000..72e4fddc66 --- /dev/null +++ b/accounts/abi/bind/backends/simulated.go @@ -0,0 +1,950 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package backends + +import ( + "context" + "errors" + "fmt" + "math/big" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/eth" + + "github.com/ava-labs/subnet-evm/accounts/abi" + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/bloombits" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/filters" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" +) + +// Verify that SimulatedBackend implements required interfaces +var ( + _ bind.AcceptedContractCaller = (*SimulatedBackend)(nil) + _ bind.ContractBackend = (*SimulatedBackend)(nil) + _ bind.ContractFilterer = (*SimulatedBackend)(nil) + _ bind.ContractTransactor = (*SimulatedBackend)(nil) + _ bind.DeployBackend = (*SimulatedBackend)(nil) + + _ interfaces.ChainReader = (*SimulatedBackend)(nil) + _ interfaces.ChainStateReader = (*SimulatedBackend)(nil) + _ interfaces.TransactionReader = (*SimulatedBackend)(nil) + _ interfaces.TransactionSender = (*SimulatedBackend)(nil) + _ interfaces.ContractCaller = (*SimulatedBackend)(nil) + _ interfaces.GasEstimator = (*SimulatedBackend)(nil) + _ interfaces.GasPricer = (*SimulatedBackend)(nil) + _ interfaces.LogFilterer = (*SimulatedBackend)(nil) + _ interfaces.AcceptedStateReader = (*SimulatedBackend)(nil) + _ interfaces.AcceptedContractCaller = (*SimulatedBackend)(nil) +) + +var ( + errBlockNumberUnsupported = errors.New("simulatedBackend cannot access blocks other than the latest block") + errBlockDoesNotExist = errors.New("block does not exist in blockchain") + errTransactionDoesNotExist = errors.New("transaction does not exist") +) + +// SimulatedBackend implements bind.ContractBackend, simulating a blockchain in +// the background. Its main purpose is to allow for easy testing of contract bindings. +// Simulated backend implements the following interfaces: +// ChainReader, ChainStateReader, ContractBackend, ContractCaller, ContractFilterer, ContractTransactor, +// DeployBackend, GasEstimator, GasPricer, LogFilterer, AcceptedContractCaller, TransactionReader, and TransactionSender +type SimulatedBackend struct { + database ethdb.Database // In memory database to store our testing data + blockchain *core.BlockChain // Ethereum blockchain to handle the consensus + + mu sync.Mutex + acceptedBlock *types.Block // Currently accepted block that will be imported on request + acceptedState *state.StateDB // Currently accepted state that will be the active on request + + events *filters.EventSystem // Event system for filtering log events live + + config *params.ChainConfig +} + +// NewSimulatedBackendWithDatabase creates a new binding backend based on the given database +// and uses a simulated blockchain for testing purposes. +// A simulated backend always uses chainID 1337. +func NewSimulatedBackendWithDatabase(database ethdb.Database, alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend { + cpcfg := params.TestChainConfig + cpcfg.ChainID = big.NewInt(1337) + genesis := core.Genesis{Config: cpcfg, GasLimit: gasLimit, Alloc: alloc} + genesis.MustCommit(database) + cacheConfig := &core.CacheConfig{} + blockchain, _ := core.NewBlockChain(database, cacheConfig, genesis.Config, dummy.NewEngine(), vm.Config{}, common.Hash{}) + + backend := &SimulatedBackend{ + database: database, + blockchain: blockchain, + config: genesis.Config, + events: filters.NewEventSystem(&filterBackend{database, blockchain}, false), + } + backend.rollback(blockchain.CurrentBlock()) + return backend +} + +// NewSimulatedBackend creates a new binding backend using a simulated blockchain +// for testing purposes. +// A simulated backend always uses chainID 1337. +func NewSimulatedBackend(alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend { + return NewSimulatedBackendWithDatabase(rawdb.NewMemoryDatabase(), alloc, gasLimit) +} + +// Close terminates the underlying blockchain's update loop. +func (b *SimulatedBackend) Close() error { + b.blockchain.Stop() + return nil +} + +// Commit imports all the pending transactions as a single block and starts a +// fresh new state. +func (b *SimulatedBackend) Commit(accept bool) { + b.mu.Lock() + defer b.mu.Unlock() + + if _, err := b.blockchain.InsertChain([]*types.Block{b.acceptedBlock}); err != nil { + panic(err) // This cannot happen unless the simulator is wrong, fail in that case + } + if accept { + if err := b.blockchain.Accept(b.acceptedBlock); err != nil { + panic(err) + } + } + // Using the last inserted block here makes it possible to build on a side + // chain after a fork. + b.rollback(b.acceptedBlock) +} + +// Rollback aborts all pending transactions, reverting to the last committed state. +func (b *SimulatedBackend) Rollback() { + b.mu.Lock() + defer b.mu.Unlock() + + b.rollback(b.blockchain.CurrentBlock()) +} + +func (b *SimulatedBackend) rollback(parent *types.Block) { + blocks, _, _ := core.GenerateChain(b.config, parent, dummy.NewEngine(), b.database, 1, 10, func(int, *core.BlockGen) {}) + + b.acceptedBlock = blocks[0] + b.acceptedState, _ = state.New(b.acceptedBlock.Root(), b.blockchain.StateCache(), nil) +} + +// Fork creates a side-chain that can be used to simulate reorgs. +// +// This function should be called with the ancestor block where the new side +// chain should be started. Transactions (old and new) can then be applied on +// top and Commit-ed. +// +// Note, the side-chain will only become canonical (and trigger the events) when +// it becomes longer. Until then CallContract will still operate on the current +// canonical chain. +// +// There is a % chance that the side chain becomes canonical at the same length +// to simulate live network behavior. +func (b *SimulatedBackend) Fork(ctx context.Context, parent common.Hash) error { + b.mu.Lock() + defer b.mu.Unlock() + + if len(b.acceptedBlock.Transactions()) != 0 { + return errors.New("pending block dirty") + } + block, err := b.blockByHash(ctx, parent) + if err != nil { + return err + } + b.rollback(block) + return nil +} + +// stateByBlockNumber retrieves a state by a given blocknumber. +func (b *SimulatedBackend) stateByBlockNumber(ctx context.Context, blockNumber *big.Int) (*state.StateDB, error) { + if blockNumber == nil || blockNumber.Cmp(b.blockchain.CurrentBlock().Number()) == 0 { + return b.blockchain.State() + } + block, err := b.blockByNumber(ctx, blockNumber) + if err != nil { + return nil, err + } + return b.blockchain.StateAt(block.Root()) +} + +// CodeAt returns the code associated with a certain account in the blockchain. +func (b *SimulatedBackend) CodeAt(ctx context.Context, contract common.Address, blockNumber *big.Int) ([]byte, error) { + b.mu.Lock() + defer b.mu.Unlock() + + stateDB, err := b.stateByBlockNumber(ctx, blockNumber) + if err != nil { + return nil, err + } + + return stateDB.GetCode(contract), nil +} + +// BalanceAt returns the wei balance of a certain account in the blockchain. +func (b *SimulatedBackend) BalanceAt(ctx context.Context, contract common.Address, blockNumber *big.Int) (*big.Int, error) { + b.mu.Lock() + defer b.mu.Unlock() + + stateDB, err := b.stateByBlockNumber(ctx, blockNumber) + if err != nil { + return nil, err + } + + return stateDB.GetBalance(contract), nil +} + +// NonceAt returns the nonce of a certain account in the blockchain. +func (b *SimulatedBackend) NonceAt(ctx context.Context, contract common.Address, blockNumber *big.Int) (uint64, error) { + b.mu.Lock() + defer b.mu.Unlock() + + stateDB, err := b.stateByBlockNumber(ctx, blockNumber) + if err != nil { + return 0, err + } + + return stateDB.GetNonce(contract), nil +} + +// StorageAt returns the value of key in the storage of an account in the blockchain. +func (b *SimulatedBackend) StorageAt(ctx context.Context, contract common.Address, key common.Hash, blockNumber *big.Int) ([]byte, error) { + b.mu.Lock() + defer b.mu.Unlock() + + stateDB, err := b.stateByBlockNumber(ctx, blockNumber) + if err != nil { + return nil, err + } + + val := stateDB.GetState(contract, key) + return val[:], nil +} + +// TransactionReceipt returns the receipt of a transaction. +func (b *SimulatedBackend) TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) { + b.mu.Lock() + defer b.mu.Unlock() + + receipt, _, _, _ := rawdb.ReadReceipt(b.database, txHash, b.config) + return receipt, nil +} + +// TransactionByHash checks the pool of pending transactions in addition to the +// blockchain. The isPending return value indicates whether the transaction has been +// mined yet. Note that the transaction may not be part of the canonical chain even if +// it's not pending. +func (b *SimulatedBackend) TransactionByHash(ctx context.Context, txHash common.Hash) (*types.Transaction, bool, error) { + b.mu.Lock() + defer b.mu.Unlock() + + tx := b.acceptedBlock.Transaction(txHash) + if tx != nil { + return tx, true, nil + } + tx, _, _, _ = rawdb.ReadTransaction(b.database, txHash) + if tx != nil { + return tx, false, nil + } + return nil, false, interfaces.NotFound +} + +// BlockByHash retrieves a block based on the block hash. +func (b *SimulatedBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) { + b.mu.Lock() + defer b.mu.Unlock() + + return b.blockByHash(ctx, hash) +} + +// blockByHash retrieves a block based on the block hash without Locking. +func (b *SimulatedBackend) blockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) { + if hash == b.acceptedBlock.Hash() { + return b.acceptedBlock, nil + } + + block := b.blockchain.GetBlockByHash(hash) + if block != nil { + return block, nil + } + + return nil, errBlockDoesNotExist +} + +// BlockByNumber retrieves a block from the database by number, caching it +// (associated with its hash) if found. +func (b *SimulatedBackend) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) { + b.mu.Lock() + defer b.mu.Unlock() + + return b.blockByNumber(ctx, number) +} + +// blockByNumber retrieves a block from the database by number, caching it +// (associated with its hash) if found without Lock. +func (b *SimulatedBackend) blockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) { + if number == nil || number.Cmp(b.acceptedBlock.Number()) == 0 { + return b.blockchain.CurrentBlock(), nil + } + + block := b.blockchain.GetBlockByNumber(uint64(number.Int64())) + if block == nil { + return nil, errBlockDoesNotExist + } + + return block, nil +} + +// HeaderByHash returns a block header from the current canonical chain. +func (b *SimulatedBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) { + b.mu.Lock() + defer b.mu.Unlock() + + if hash == b.acceptedBlock.Hash() { + return b.acceptedBlock.Header(), nil + } + + header := b.blockchain.GetHeaderByHash(hash) + if header == nil { + return nil, errBlockDoesNotExist + } + + return header, nil +} + +// HeaderByNumber returns a block header from the current canonical chain. If number is +// nil, the latest known header is returned. +func (b *SimulatedBackend) HeaderByNumber(ctx context.Context, block *big.Int) (*types.Header, error) { + b.mu.Lock() + defer b.mu.Unlock() + + if block == nil || block.Cmp(b.acceptedBlock.Number()) == 0 { + return b.blockchain.CurrentHeader(), nil + } + + return b.blockchain.GetHeaderByNumber(uint64(block.Int64())), nil +} + +// TransactionCount returns the number of transactions in a given block. +func (b *SimulatedBackend) TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error) { + b.mu.Lock() + defer b.mu.Unlock() + + if blockHash == b.acceptedBlock.Hash() { + return uint(b.acceptedBlock.Transactions().Len()), nil + } + + block := b.blockchain.GetBlockByHash(blockHash) + if block == nil { + return uint(0), errBlockDoesNotExist + } + + return uint(block.Transactions().Len()), nil +} + +// TransactionInBlock returns the transaction for a specific block at a specific index. +func (b *SimulatedBackend) TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) { + b.mu.Lock() + defer b.mu.Unlock() + + if blockHash == b.acceptedBlock.Hash() { + transactions := b.acceptedBlock.Transactions() + if uint(len(transactions)) < index+1 { + return nil, errTransactionDoesNotExist + } + + return transactions[index], nil + } + + block := b.blockchain.GetBlockByHash(blockHash) + if block == nil { + return nil, errBlockDoesNotExist + } + + transactions := block.Transactions() + if uint(len(transactions)) < index+1 { + return nil, errTransactionDoesNotExist + } + + return transactions[index], nil +} + +// AcceptedCodeAt returns the code associated with an account in the accepted state. +func (b *SimulatedBackend) AcceptedCodeAt(ctx context.Context, contract common.Address) ([]byte, error) { + b.mu.Lock() + defer b.mu.Unlock() + + return b.acceptedState.GetCode(contract), nil +} + +func newRevertError(result *core.ExecutionResult) *revertError { + reason, errUnpack := abi.UnpackRevert(result.Revert()) + err := errors.New("execution reverted") + if errUnpack == nil { + err = fmt.Errorf("execution reverted: %v", reason) + } + return &revertError{ + error: err, + reason: hexutil.Encode(result.Revert()), + } +} + +// revertError is an API error that encompasses an EVM revert with JSON error +// code and a binary data blob. +type revertError struct { + error + reason string // revert reason hex encoded +} + +// ErrorCode returns the JSON error code for a revert. +// See: https://github.com/ethereum/wiki/wiki/JSON-RPC-Error-Codes-Improvement-Proposal +func (e *revertError) ErrorCode() int { + return 3 +} + +// ErrorData returns the hex encoded revert reason. +func (e *revertError) ErrorData() interface{} { + return e.reason +} + +// CallContract executes a contract call. +func (b *SimulatedBackend) CallContract(ctx context.Context, call interfaces.CallMsg, blockNumber *big.Int) ([]byte, error) { + b.mu.Lock() + defer b.mu.Unlock() + + if blockNumber != nil && blockNumber.Cmp(b.blockchain.CurrentBlock().Number()) != 0 { + return nil, errBlockNumberUnsupported + } + stateDB, err := b.blockchain.State() + if err != nil { + return nil, err + } + res, err := b.callContract(ctx, call, b.blockchain.CurrentBlock(), stateDB) + if err != nil { + return nil, err + } + // If the result contains a revert reason, try to unpack and return it. + if len(res.Revert()) > 0 { + return nil, newRevertError(res) + } + return res.Return(), res.Err +} + +// AcceptedCallContract executes a contract call on the accepted state. +func (b *SimulatedBackend) AcceptedCallContract(ctx context.Context, call interfaces.CallMsg) ([]byte, error) { + b.mu.Lock() + defer b.mu.Unlock() + defer b.acceptedState.RevertToSnapshot(b.acceptedState.Snapshot()) + + res, err := b.callContract(ctx, call, b.acceptedBlock, b.acceptedState) + if err != nil { + return nil, err + } + // If the result contains a revert reason, try to unpack and return it. + if len(res.Revert()) > 0 { + return nil, newRevertError(res) + } + return res.Return(), res.Err +} + +// AcceptedNonceAt implements AcceptedStateReader.AcceptedNonceAt, retrieving +// the nonce currently accepted for the account. +func (b *SimulatedBackend) AcceptedNonceAt(ctx context.Context, account common.Address) (uint64, error) { + b.mu.Lock() + defer b.mu.Unlock() + + return b.acceptedState.GetOrNewStateObject(account).Nonce(), nil +} + +// SuggestGasPrice implements ContractTransactor.SuggestGasPrice. Since the simulated +// chain doesn't have miners, we just return a gas price of 1 for any call. +func (b *SimulatedBackend) SuggestGasPrice(ctx context.Context) (*big.Int, error) { + if b.acceptedBlock.Header().BaseFee != nil { + return b.acceptedBlock.Header().BaseFee, nil + } + return big.NewInt(1), nil +} + +// SuggestGasTipCap implements ContractTransactor.SuggestGasTipCap. Since the simulated +// chain doesn't have miners, we just return a gas tip of 1 for any call. +func (b *SimulatedBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) { + return big.NewInt(1), nil +} + +// EstimateGas executes the requested code against the currently pending block/state and +// returns the used amount of gas. +func (b *SimulatedBackend) EstimateGas(ctx context.Context, call interfaces.CallMsg) (uint64, error) { + b.mu.Lock() + defer b.mu.Unlock() + + // Determine the lowest and highest possible gas limits to binary search in between + var ( + lo uint64 = params.TxGas - 1 + hi uint64 + cap uint64 + ) + if call.Gas >= params.TxGas { + hi = call.Gas + } else { + hi = b.acceptedBlock.GasLimit() + } + // Normalize the max fee per gas the call is willing to spend. + var feeCap *big.Int + if call.GasPrice != nil && (call.GasFeeCap != nil || call.GasTipCap != nil) { + return 0, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified") + } else if call.GasPrice != nil { + feeCap = call.GasPrice + } else if call.GasFeeCap != nil { + feeCap = call.GasFeeCap + } else { + feeCap = common.Big0 + } + // Recap the highest gas allowance with account's balance. + if feeCap.BitLen() != 0 { + balance := b.acceptedState.GetBalance(call.From) // from can't be nil + available := new(big.Int).Set(balance) + if call.Value != nil { + if call.Value.Cmp(available) >= 0 { + return 0, errors.New("insufficient funds for transfer") + } + available.Sub(available, call.Value) + } + allowance := new(big.Int).Div(available, feeCap) + if allowance.IsUint64() && hi > allowance.Uint64() { + transfer := call.Value + if transfer == nil { + transfer = new(big.Int) + } + log.Warn("Gas estimation capped by limited funds", "original", hi, "balance", balance, + "sent", transfer, "feecap", feeCap, "fundable", allowance) + hi = allowance.Uint64() + } + } + cap = hi + + // Create a helper to check if a gas allowance results in an executable transaction + executable := func(gas uint64) (bool, *core.ExecutionResult, error) { + call.Gas = gas + + snapshot := b.acceptedState.Snapshot() + res, err := b.callContract(ctx, call, b.acceptedBlock, b.acceptedState) + b.acceptedState.RevertToSnapshot(snapshot) + + if err != nil { + if errors.Is(err, core.ErrIntrinsicGas) { + return true, nil, nil // Special case, raise gas limit + } + return true, nil, err // Bail out + } + return res.Failed(), res, nil + } + // Execute the binary search and hone in on an executable gas limit + for lo+1 < hi { + mid := (hi + lo) / 2 + failed, _, err := executable(mid) + // If the error is not nil(consensus error), it means the provided message + // call or transaction will never be accepted no matter how much gas it is + // assigned. Return the error directly, don't struggle any more + if err != nil { + return 0, err + } + if failed { + lo = mid + } else { + hi = mid + } + } + // Reject the transaction as invalid if it still fails at the highest allowance + if hi == cap { + failed, result, err := executable(hi) + if err != nil { + return 0, err + } + if failed { + if result != nil && result.Err != vm.ErrOutOfGas { + if len(result.Revert()) > 0 { + return 0, newRevertError(result) + } + return 0, result.Err + } + // Otherwise, the specified gas cap is too low + return 0, fmt.Errorf("gas required exceeds allowance (%d)", cap) + } + } + return hi, nil +} + +// callContract implements common code between normal and pending contract calls. +// state is modified during execution, make sure to copy it if necessary. +func (b *SimulatedBackend) callContract(ctx context.Context, call interfaces.CallMsg, block *types.Block, stateDB *state.StateDB) (*core.ExecutionResult, error) { + // Gas prices post 1559 need to be initialized + if call.GasPrice != nil && (call.GasFeeCap != nil || call.GasTipCap != nil) { + return nil, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified") + } + head := b.blockchain.CurrentHeader() + if !b.blockchain.Config().IsSubnetEVM(new(big.Int).SetUint64(head.Time)) { + // If there's no basefee, then it must be a non-1559 execution + if call.GasPrice == nil { + call.GasPrice = new(big.Int) + } + call.GasFeeCap, call.GasTipCap = call.GasPrice, call.GasPrice + } else { + // A basefee is provided, necessitating 1559-type execution + if call.GasPrice != nil { + // User specified the legacy gas field, convert to 1559 gas typing + call.GasFeeCap, call.GasTipCap = call.GasPrice, call.GasPrice + } else { + // User specified 1559 gas feilds (or none), use those + if call.GasFeeCap == nil { + call.GasFeeCap = new(big.Int) + } + if call.GasTipCap == nil { + call.GasTipCap = new(big.Int) + } + // Backfill the legacy gasPrice for EVM execution, unless we're all zeroes + call.GasPrice = new(big.Int) + if call.GasFeeCap.BitLen() > 0 || call.GasTipCap.BitLen() > 0 { + call.GasPrice = math.BigMin(new(big.Int).Add(call.GasTipCap, head.BaseFee), call.GasFeeCap) + } + } + } + // Ensure message is initialized properly. + if call.Gas == 0 { + call.Gas = 50000000 + } + if call.Value == nil { + call.Value = new(big.Int) + } + // Set infinite balance to the fake caller account. + from := stateDB.GetOrNewStateObject(call.From) + from.SetBalance(math.MaxBig256) + // Execute the call. + msg := callMsg{call} + + txContext := core.NewEVMTxContext(msg) + evmContext := core.NewEVMBlockContext(block.Header(), b.blockchain, nil) + // Create a new environment which holds all relevant information + // about the transaction and calling mechanisms. + vmEnv := vm.NewEVM(evmContext, txContext, stateDB, b.config, vm.Config{NoBaseFee: true}) + gasPool := new(core.GasPool).AddGas(math.MaxUint64) + + return core.NewStateTransition(vmEnv, msg, gasPool).TransitionDb() +} + +// SendTransaction updates the pending block to include the given transaction. +// It panics if the transaction is invalid. +func (b *SimulatedBackend) SendTransaction(ctx context.Context, tx *types.Transaction) error { + b.mu.Lock() + defer b.mu.Unlock() + + // Get the last block + block, err := b.blockByHash(ctx, b.acceptedBlock.ParentHash()) + if err != nil { + panic("could not fetch parent") + } + // Check transaction validity + signer := types.NewLondonSigner(b.blockchain.Config().ChainID) + sender, err := types.Sender(signer, tx) + if err != nil { + panic(fmt.Errorf("invalid transaction: %v", err)) + } + nonce := b.acceptedState.GetNonce(sender) + if tx.Nonce() != nonce { + panic(fmt.Errorf("invalid transaction nonce: got %d, want %d", tx.Nonce(), nonce)) + } + // Include tx in chain + blocks, _, err := core.GenerateChain(b.config, block, dummy.NewETHFaker(), b.database, 1, 10, func(number int, block *core.BlockGen) { + for _, tx := range b.acceptedBlock.Transactions() { + block.AddTxWithChain(b.blockchain, tx) + } + block.AddTxWithChain(b.blockchain, tx) + }) + if err != nil { + return err + } + stateDB, _ := b.blockchain.State() + + b.acceptedBlock = blocks[0] + b.acceptedState, _ = state.New(b.acceptedBlock.Root(), stateDB.Database(), nil) + return nil +} + +// FilterLogs executes a log filter operation, blocking during execution and +// returning all the results in one batch. +// +// TODO(karalabe): Deprecate when the subscription one can return past data too. +func (b *SimulatedBackend) FilterLogs(ctx context.Context, query interfaces.FilterQuery) ([]types.Log, error) { + var filter *filters.Filter + if query.BlockHash != nil { + // Block filter requested, construct a single-shot filter + filter = filters.NewBlockFilter(&filterBackend{b.database, b.blockchain}, *query.BlockHash, query.Addresses, query.Topics) + } else { + // Initialize unset filter boundaries to run from genesis to chain head + from := int64(0) + if query.FromBlock != nil { + from = query.FromBlock.Int64() + } + to := int64(-1) + if query.ToBlock != nil { + to = query.ToBlock.Int64() + } + // Construct the range filter + filter, _ = filters.NewRangeFilter(&filterBackend{b.database, b.blockchain}, from, to, query.Addresses, query.Topics) + } + // Run the filter and return all the logs + logs, err := filter.Logs(ctx) + if err != nil { + return nil, err + } + res := make([]types.Log, len(logs)) + for i, nLog := range logs { + res[i] = *nLog + } + return res, nil +} + +// SubscribeFilterLogs creates a background log filtering operation, returning a +// subscription immediately, which can be used to stream the found events. +func (b *SimulatedBackend) SubscribeFilterLogs(ctx context.Context, query interfaces.FilterQuery, ch chan<- types.Log) (interfaces.Subscription, error) { + // Subscribe to contract events + sink := make(chan []*types.Log) + + sub, err := b.events.SubscribeLogs(query, sink) + if err != nil { + return nil, err + } + // Since we're getting logs in batches, we need to flatten them into a plain stream + return event.NewSubscription(func(quit <-chan struct{}) error { + defer sub.Unsubscribe() + for { + select { + case logs := <-sink: + for _, nlog := range logs { + select { + case ch <- *nlog: + case err := <-sub.Err(): + return err + case <-quit: + return nil + } + } + case err := <-sub.Err(): + return err + case <-quit: + return nil + } + } + }), nil +} + +// SubscribeNewHead returns an event subscription for a new header. +func (b *SimulatedBackend) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (interfaces.Subscription, error) { + // subscribe to a new head + sink := make(chan *types.Header) + sub := b.events.SubscribeNewHeads(sink) + + return event.NewSubscription(func(quit <-chan struct{}) error { + defer sub.Unsubscribe() + for { + select { + case head := <-sink: + select { + case ch <- head: + case err := <-sub.Err(): + return err + case <-quit: + return nil + } + case err := <-sub.Err(): + return err + case <-quit: + return nil + } + } + }), nil +} + +// AdjustTime adds a time shift to the simulated clock. +// It can only be called on empty blocks. +func (b *SimulatedBackend) AdjustTime(adjustment time.Duration) error { + b.mu.Lock() + defer b.mu.Unlock() + + if len(b.acceptedBlock.Transactions()) != 0 { + return errors.New("Could not adjust time on non-empty block") + } + + blocks, _, _ := core.GenerateChain(b.config, b.blockchain.CurrentBlock(), dummy.NewEngine(), b.database, 1, 10, func(number int, block *core.BlockGen) { + block.OffsetTime(int64(adjustment.Seconds())) + }) + stateDB, _ := b.blockchain.State() + + b.acceptedBlock = blocks[0] + b.acceptedState, _ = state.New(b.acceptedBlock.Root(), stateDB.Database(), nil) + + return nil +} + +// Blockchain returns the underlying blockchain. +func (b *SimulatedBackend) Blockchain() *core.BlockChain { + return b.blockchain +} + +// callMsg implements core.Message to allow passing it as a transaction simulator. +type callMsg struct { + interfaces.CallMsg +} + +func (m callMsg) From() common.Address { return m.CallMsg.From } +func (m callMsg) Nonce() uint64 { return 0 } +func (m callMsg) IsFake() bool { return true } +func (m callMsg) To() *common.Address { return m.CallMsg.To } +func (m callMsg) GasPrice() *big.Int { return m.CallMsg.GasPrice } +func (m callMsg) GasFeeCap() *big.Int { return m.CallMsg.GasFeeCap } +func (m callMsg) GasTipCap() *big.Int { return m.CallMsg.GasTipCap } +func (m callMsg) Gas() uint64 { return m.CallMsg.Gas } +func (m callMsg) Value() *big.Int { return m.CallMsg.Value } +func (m callMsg) Data() []byte { return m.CallMsg.Data } +func (m callMsg) AccessList() types.AccessList { return m.CallMsg.AccessList } + +// filterBackend implements filters.Backend to support filtering for logs without +// taking bloom-bits acceleration structures into account. +type filterBackend struct { + db ethdb.Database + bc *core.BlockChain +} + +func (fb *filterBackend) SubscribeChainAcceptedEvent(ch chan<- core.ChainEvent) event.Subscription { + return fb.bc.SubscribeChainAcceptedEvent(ch) +} + +func (fb *filterBackend) SubscribeAcceptedLogsEvent(ch chan<- []*types.Log) event.Subscription { + return fb.bc.SubscribeAcceptedLogsEvent(ch) +} + +func (fb *filterBackend) SubscribeAcceptedTransactionEvent(ch chan<- core.NewTxsEvent) event.Subscription { + return fb.bc.SubscribeAcceptedTransactionEvent(ch) +} + +func (fb *filterBackend) GetVMConfig() *vm.Config { + return fb.bc.GetVMConfig() +} + +func (fb *filterBackend) LastAcceptedBlock() *types.Block { + return fb.bc.LastAcceptedBlock() +} + +func (fb *filterBackend) GetMaxBlocksPerRequest() int64 { + return eth.DefaultSettings.MaxBlocksPerRequest +} + +func (fb *filterBackend) ChainDb() ethdb.Database { return fb.db } +func (fb *filterBackend) EventMux() *event.TypeMux { panic("not supported") } + +func (fb *filterBackend) HeaderByNumber(ctx context.Context, block rpc.BlockNumber) (*types.Header, error) { + if block == rpc.LatestBlockNumber { + return fb.bc.CurrentHeader(), nil + } + return fb.bc.GetHeaderByNumber(uint64(block.Int64())), nil +} + +func (fb *filterBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) { + return fb.bc.GetHeaderByHash(hash), nil +} + +func (fb *filterBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) { + number := rawdb.ReadHeaderNumber(fb.db, hash) + if number == nil { + return nil, nil + } + return rawdb.ReadReceipts(fb.db, hash, *number, fb.bc.Config()), nil +} + +func (fb *filterBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) { + number := rawdb.ReadHeaderNumber(fb.db, hash) + if number == nil { + return nil, nil + } + receipts := rawdb.ReadReceipts(fb.db, hash, *number, fb.bc.Config()) + if receipts == nil { + return nil, nil + } + logs := make([][]*types.Log, len(receipts)) + for i, receipt := range receipts { + logs[i] = receipt.Logs + } + return logs, nil +} + +func (fb *filterBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription { + return nullSubscription() +} + +func (fb *filterBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription { + return fb.bc.SubscribeChainEvent(ch) +} + +func (fb *filterBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription { + return fb.bc.SubscribeRemovedLogsEvent(ch) +} + +func (fb *filterBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription { + return fb.bc.SubscribeLogsEvent(ch) +} + +func (fb *filterBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription { + return nullSubscription() +} + +func (fb *filterBackend) BloomStatus() (uint64, uint64) { return 4096, 0 } + +func (fb *filterBackend) ServiceFilter(ctx context.Context, ms *bloombits.MatcherSession) { + panic("not supported") +} + +func nullSubscription() event.Subscription { + return event.NewSubscription(func(quit <-chan struct{}) error { + <-quit + return nil + }) +} diff --git a/accounts/abi/bind/backends/simulated_test.go b/accounts/abi/bind/backends/simulated_test.go new file mode 100644 index 0000000000..d1b35d1770 --- /dev/null +++ b/accounts/abi/bind/backends/simulated_test.go @@ -0,0 +1,1364 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package backends + +import ( + "bytes" + "context" + "errors" + "math/big" + "math/rand" + "reflect" + "strings" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/accounts/abi" + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func TestSimulatedBackend(t *testing.T) { + var gasLimit uint64 = 8000029 + key, _ := crypto.GenerateKey() // nolint: gosec + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + genAlloc := make(core.GenesisAlloc) + genAlloc[auth.From] = core.GenesisAccount{Balance: big.NewInt(9223372036854775807)} + + sim := NewSimulatedBackend(genAlloc, gasLimit) + defer sim.Close() + + // should return an error if the tx is not found + txHash := common.HexToHash("2") + _, isPending, err := sim.TransactionByHash(context.Background(), txHash) + + if isPending { + t.Fatal("transaction should not be pending") + } + if err != interfaces.NotFound { + t.Fatalf("err should be `interfaces.NotFound` but received %v", err) + } + + // generate a transaction and confirm you can retrieve it + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + code := `6060604052600a8060106000396000f360606040526008565b00` + var gas uint64 = 3000000 + tx := types.NewContractCreation(0, big.NewInt(0), gas, gasPrice, common.FromHex(code)) + signer := types.NewLondonSigner(big.NewInt(1337)) + tx, _ = types.SignTx(tx, signer, key) + + err = sim.SendTransaction(context.Background(), tx) + if err != nil { + t.Fatal("error sending transaction") + } + + txHash = tx.Hash() + _, isPending, err = sim.TransactionByHash(context.Background(), txHash) + if err != nil { + t.Fatalf("error getting transaction with hash: %v", txHash.String()) + } + if !isPending { + t.Fatal("transaction should have pending status") + } + + sim.Commit(true) + _, isPending, err = sim.TransactionByHash(context.Background(), txHash) + if err != nil { + t.Fatalf("error getting transaction with hash: %v", txHash.String()) + } + if isPending { + t.Fatal("transaction should not have pending status") + } +} + +var testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + +// the following is based on this contract: +// contract T { +// event received(address sender, uint amount, bytes memo); +// event receivedAddr(address sender); +// +// function receive(bytes calldata memo) external payable returns (string memory res) { +// emit received(msg.sender, msg.value, memo); +// emit receivedAddr(msg.sender); +// return "hello world"; +// } +// } +const ( + abiJSON = `[ { "constant": false, "inputs": [ { "name": "memo", "type": "bytes" } ], "name": "receive", "outputs": [ { "name": "res", "type": "string" } ], "payable": true, "stateMutability": "payable", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "sender", "type": "address" }, { "indexed": false, "name": "amount", "type": "uint256" }, { "indexed": false, "name": "memo", "type": "bytes" } ], "name": "received", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "sender", "type": "address" } ], "name": "receivedAddr", "type": "event" } ]` + abiBin = `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` + deployedCode = `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` +) + +// expected return value contains "hello world" +var expectedReturn = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} + +func simTestBackend(testAddr common.Address) *SimulatedBackend { + return NewSimulatedBackend( + core.GenesisAlloc{ + testAddr: {Balance: new(big.Int).Mul(big.NewInt(10000000000000000), big.NewInt(1000))}, + }, 10000000, + ) +} + +func TestNewSimulatedBackend(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + expectedBal := new(big.Int).Mul(big.NewInt(10000000000000000), big.NewInt(1000)) + sim := simTestBackend(testAddr) + defer sim.Close() + + if sim.config != params.TestChainConfig { + t.Errorf("expected sim config to equal params.AllEthashProtocolChanges, got %v", sim.config) + } + + if sim.blockchain.Config() != params.TestChainConfig { + t.Errorf("expected sim blockchain config to equal params.AllEthashProtocolChanges, got %v", sim.config) + } + + stateDB, _ := sim.blockchain.State() + bal := stateDB.GetBalance(testAddr) + if bal.Cmp(expectedBal) != 0 { + t.Errorf("expected balance for test address not received. expected: %v actual: %v", expectedBal, bal) + } +} + +func TestAdjustTime(t *testing.T) { + sim := NewSimulatedBackend( + core.GenesisAlloc{}, 10000000, + ) + defer sim.Close() + + prevTime := sim.acceptedBlock.Time() + if err := sim.AdjustTime(time.Second); err != nil { + t.Error(err) + } + newTime := sim.acceptedBlock.Time() + + if newTime-prevTime != uint64(time.Second.Seconds()) { + t.Errorf("adjusted time not equal to a second. prev: %v, new: %v", prevTime, newTime) + } +} + +func TestNewAdjustTimeFail(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + sim := simTestBackend(testAddr) + + // Create tx and send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(0, testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + sim.SendTransaction(context.Background(), signedTx) + // AdjustTime should fail on non-empty block + if err := sim.AdjustTime(time.Second); err == nil { + t.Error("Expected adjust time to error on non-empty block") + } + sim.Commit(false) + + prevTime := sim.acceptedBlock.Time() + if err := sim.AdjustTime(time.Minute); err != nil { + t.Error(err) + } + newTime := sim.acceptedBlock.Time() + if newTime-prevTime != uint64(time.Minute.Seconds()) { + t.Errorf("adjusted time not equal to a minute. prev: %v, new: %v", prevTime, newTime) + } + // Put a transaction after adjusting time + tx2 := types.NewTransaction(1, testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer = types.NewLondonSigner(big.NewInt(1337)) + signedTx2, err := types.SignTx(tx2, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + sim.SendTransaction(context.Background(), signedTx2) + sim.Commit(false) + newTime = sim.acceptedBlock.Time() + if newTime-prevTime >= uint64(time.Minute.Seconds()) { + t.Errorf("time adjusted, but shouldn't be: prev: %v, new: %v", prevTime, newTime) + } +} + +func TestBalanceAt(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + expectedBal := new(big.Int).Mul(big.NewInt(10000000000000000), big.NewInt(1000)) + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + bal, err := sim.BalanceAt(bgCtx, testAddr, nil) + if err != nil { + t.Error(err) + } + + if bal.Cmp(expectedBal) != 0 { + t.Errorf("expected balance for test address not received. expected: %v actual: %v", expectedBal, bal) + } +} + +func TestBlockByHash(t *testing.T) { + sim := NewSimulatedBackend( + core.GenesisAlloc{}, 10000000, + ) + defer sim.Close() + bgCtx := context.Background() + + block, err := sim.BlockByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get recent block: %v", err) + } + blockByHash, err := sim.BlockByHash(bgCtx, block.Hash()) + if err != nil { + t.Errorf("could not get recent block: %v", err) + } + + if block.Hash() != blockByHash.Hash() { + t.Errorf("did not get expected block") + } +} + +func TestBlockByNumber(t *testing.T) { + sim := NewSimulatedBackend( + core.GenesisAlloc{}, 10000000, + ) + defer sim.Close() + bgCtx := context.Background() + + block, err := sim.BlockByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get recent block: %v", err) + } + if block.NumberU64() != 0 { + t.Errorf("did not get most recent block, instead got block number %v", block.NumberU64()) + } + + // create one block + sim.Commit(false) + + block, err = sim.BlockByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get recent block: %v", err) + } + if block.NumberU64() != 1 { + t.Errorf("did not get most recent block, instead got block number %v", block.NumberU64()) + } + + blockByNumber, err := sim.BlockByNumber(bgCtx, big.NewInt(1)) + if err != nil { + t.Errorf("could not get block by number: %v", err) + } + if blockByNumber.Hash() != block.Hash() { + t.Errorf("did not get the same block with height of 1 as before") + } +} + +func TestNonceAt(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + nonce, err := sim.NonceAt(bgCtx, testAddr, big.NewInt(0)) + if err != nil { + t.Errorf("could not get nonce for test addr: %v", err) + } + + if nonce != uint64(0) { + t.Errorf("received incorrect nonce. expected 0, got %v", nonce) + } + + // create a signed transaction to send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(nonce, testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + + // send tx to simulated backend + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not add tx to pending block: %v", err) + } + sim.Commit(false) + + newNonce, err := sim.NonceAt(bgCtx, testAddr, big.NewInt(1)) + if err != nil { + t.Errorf("could not get nonce for test addr: %v", err) + } + + if newNonce != nonce+uint64(1) { + t.Errorf("received incorrect nonce. expected 1, got %v", nonce) + } + // create some more blocks + sim.Commit(false) + // Check that we can get data for an older block/state + newNonce, err = sim.NonceAt(bgCtx, testAddr, big.NewInt(1)) + if err != nil { + t.Fatalf("could not get nonce for test addr: %v", err) + } + if newNonce != nonce+uint64(1) { + t.Fatalf("received incorrect nonce. expected 1, got %v", nonce) + } +} + +func TestSendTransaction(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + // create a signed transaction to send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + + // send tx to simulated backend + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not add tx to pending block: %v", err) + } + sim.Commit(false) + + block, err := sim.BlockByNumber(bgCtx, big.NewInt(1)) + if err != nil { + t.Errorf("could not get block at height 1: %v", err) + } + + if signedTx.Hash() != block.Transactions()[0].Hash() { + t.Errorf("did not commit sent transaction. expected hash %v got hash %v", block.Transactions()[0].Hash(), signedTx.Hash()) + } +} + +func TestTransactionByHash(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := NewSimulatedBackend( + core.GenesisAlloc{ + testAddr: {Balance: new(big.Int).Mul(big.NewInt(10000000000000000), big.NewInt(1000))}, + }, 10000000, + ) + defer sim.Close() + bgCtx := context.Background() + + // create a signed transaction to send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + + // send tx to simulated backend + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not add tx to pending block: %v", err) + } + + // ensure tx is committed pending + receivedTx, pending, err := sim.TransactionByHash(bgCtx, signedTx.Hash()) + if err != nil { + t.Errorf("could not get transaction by hash %v: %v", signedTx.Hash(), err) + } + if !pending { + t.Errorf("expected transaction to be in pending state") + } + if receivedTx.Hash() != signedTx.Hash() { + t.Errorf("did not received committed transaction. expected hash %v got hash %v", signedTx.Hash(), receivedTx.Hash()) + } + + sim.Commit(true) + + // ensure tx is not and committed pending + receivedTx, pending, err = sim.TransactionByHash(bgCtx, signedTx.Hash()) + if err != nil { + t.Errorf("could not get transaction by hash %v: %v", signedTx.Hash(), err) + } + if pending { + t.Errorf("expected transaction to not be in pending state") + } + if receivedTx.Hash() != signedTx.Hash() { + t.Errorf("did not received committed transaction. expected hash %v got hash %v", signedTx.Hash(), receivedTx.Hash()) + } +} + +func TestEstimateGas(t *testing.T) { + /* + pragma solidity ^0.6.4; + contract GasEstimation { + function PureRevert() public { revert(); } + function Revert() public { revert("revert reason");} + function OOG() public { for (uint i = 0; ; i++) {}} + function Assert() public { assert(false);} + function Valid() public {} + }*/ + const contractAbi = "[{\"inputs\":[],\"name\":\"Assert\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"OOG\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"PureRevert\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"Revert\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"Valid\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]" + const contractBin = "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" + + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + opts, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(params.Ether)}}, 10000000) + defer sim.Close() + + parsed, _ := abi.JSON(strings.NewReader(contractAbi)) + contractAddr, _, _, _ := bind.DeployContract(opts, parsed, common.FromHex(contractBin), sim) + sim.Commit(false) + + cases := []struct { + name string + message interfaces.CallMsg + expect uint64 + expectError error + expectData interface{} + }{ + {"plain transfer(valid)", interfaces.CallMsg{ + From: addr, + To: &addr, + Gas: 0, + GasPrice: big.NewInt(0), + Value: big.NewInt(1), + Data: nil, + }, params.TxGas, nil, nil}, + + {"plain transfer(invalid)", interfaces.CallMsg{ + From: addr, + To: &contractAddr, + Gas: 0, + GasPrice: big.NewInt(0), + Value: big.NewInt(1), + Data: nil, + }, 0, errors.New("execution reverted"), nil}, + + {"Revert", interfaces.CallMsg{ + From: addr, + To: &contractAddr, + Gas: 0, + GasPrice: big.NewInt(0), + Value: nil, + Data: common.Hex2Bytes("d8b98391"), + }, 0, errors.New("execution reverted: revert reason"), "0x08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000d72657665727420726561736f6e00000000000000000000000000000000000000"}, + + {"PureRevert", interfaces.CallMsg{ + From: addr, + To: &contractAddr, + Gas: 0, + GasPrice: big.NewInt(0), + Value: nil, + Data: common.Hex2Bytes("aa8b1d30"), + }, 0, errors.New("execution reverted"), nil}, + + {"OOG", interfaces.CallMsg{ + From: addr, + To: &contractAddr, + Gas: 100000, + GasPrice: big.NewInt(0), + Value: nil, + Data: common.Hex2Bytes("50f6fe34"), + }, 0, errors.New("gas required exceeds allowance (100000)"), nil}, + + {"Assert", interfaces.CallMsg{ + From: addr, + To: &contractAddr, + Gas: 100000, + GasPrice: big.NewInt(0), + Value: nil, + Data: common.Hex2Bytes("b9b046f9"), + }, 0, errors.New("invalid opcode: opcode 0xfe not defined"), nil}, + + {"Valid", interfaces.CallMsg{ + From: addr, + To: &contractAddr, + Gas: 100000, + GasPrice: big.NewInt(0), + Value: nil, + Data: common.Hex2Bytes("e09fface"), + }, 21275, nil, nil}, + } + for _, c := range cases { + got, err := sim.EstimateGas(context.Background(), c.message) + if c.expectError != nil { + if err == nil { + t.Fatalf("Expect error, got nil") + } + if c.expectError.Error() != err.Error() { + t.Fatalf("Expect error, want %v, got %v", c.expectError, err) + } + if c.expectData != nil { + if err, ok := err.(*revertError); !ok { + t.Fatalf("Expect revert error, got %T", err) + } else if !reflect.DeepEqual(err.ErrorData(), c.expectData) { + t.Fatalf("Error data mismatch, want %v, got %v", c.expectData, err.ErrorData()) + } + } + continue + } + if got != c.expect { + t.Fatalf("Gas estimation mismatch, want %d, got %d", c.expect, got) + } + } +} + +func TestEstimateGasWithPrice(t *testing.T) { + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + + sim := NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(params.Ether*2 + 2e17)}}, 10000000) + defer sim.Close() + + recipient := common.HexToAddress("deadbeef") + cases := []struct { + name string + message interfaces.CallMsg + expect uint64 + expectError error + }{ + {"EstimateWithoutPrice", interfaces.CallMsg{ + From: addr, + To: &recipient, + Gas: 0, + GasPrice: big.NewInt(0), + Value: big.NewInt(100000000000), + Data: nil, + }, 21000, nil}, + + {"EstimateWithPrice", interfaces.CallMsg{ + From: addr, + To: &recipient, + Gas: 0, + GasPrice: big.NewInt(225000000000), + Value: big.NewInt(100000000000), + Data: nil, + }, 21000, nil}, + + {"EstimateWithVeryHighPrice", interfaces.CallMsg{ + From: addr, + To: &recipient, + Gas: 0, + GasPrice: big.NewInt(1e14), // gascost = 2.1ether + Value: big.NewInt(1e17), // the remaining balance for fee is 2.1ether + Data: nil, + }, 21000, nil}, + + {"EstimateWithSuperhighPrice", interfaces.CallMsg{ + From: addr, + To: &recipient, + Gas: 0, + GasPrice: big.NewInt(2e14), // gascost = 4.2ether + Value: big.NewInt(100000000000), + Data: nil, + }, 21000, errors.New("gas required exceeds allowance (10999)")}, // 10999=(2.2ether-1000wei)/(2e14) + + {"EstimateEIP1559WithHighFees", interfaces.CallMsg{ + From: addr, + To: &addr, + Gas: 0, + GasFeeCap: big.NewInt(1e14), // maxgascost = 2.1ether + GasTipCap: big.NewInt(1), + Value: big.NewInt(1e17), // the remaining balance for fee is 2.1ether + Data: nil, + }, params.TxGas, nil}, + + {"EstimateEIP1559WithSuperHighFees", interfaces.CallMsg{ + From: addr, + To: &addr, + Gas: 0, + GasFeeCap: big.NewInt(1e14), // maxgascost = 2.1ether + GasTipCap: big.NewInt(1), + Value: big.NewInt(1e17 + 1), // the remaining balance for fee is 2.1ether + Data: nil, + }, params.TxGas, errors.New("gas required exceeds allowance (20999)")}, // 20999=(2.2ether-0.1ether-1wei)/(1e14) + } + for i, c := range cases { + got, err := sim.EstimateGas(context.Background(), c.message) + if c.expectError != nil { + if err == nil { + t.Fatalf("test %d: expect error, got nil", i) + } + if c.expectError.Error() != err.Error() { + t.Fatalf("test %d: expect error, want %v, got %v", i, c.expectError, err) + } + continue + } + if c.expectError == nil && err != nil { + t.Fatalf("test %d: didn't expect error, got %v", i, err) + } + if got != c.expect { + t.Fatalf("test %d: gas estimation mismatch, want %d, got %d", i, c.expect, got) + } + } +} + +func TestHeaderByHash(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + header, err := sim.HeaderByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get recent block: %v", err) + } + headerByHash, err := sim.HeaderByHash(bgCtx, header.Hash()) + if err != nil { + t.Errorf("could not get recent block: %v", err) + } + + if header.Hash() != headerByHash.Hash() { + t.Errorf("did not get expected block") + } +} + +func TestHeaderByNumber(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + latestBlockHeader, err := sim.HeaderByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get header for tip of chain: %v", err) + } + if latestBlockHeader == nil { + t.Errorf("received a nil block header") + } + if latestBlockHeader.Number.Uint64() != uint64(0) { + t.Errorf("expected block header number 0, instead got %v", latestBlockHeader.Number.Uint64()) + } + + sim.Commit(false) + + latestBlockHeader, err = sim.HeaderByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get header for blockheight of 1: %v", err) + } + + blockHeader, err := sim.HeaderByNumber(bgCtx, big.NewInt(1)) + if err != nil { + t.Errorf("could not get header for blockheight of 1: %v", err) + } + + if blockHeader.Hash() != latestBlockHeader.Hash() { + t.Errorf("block header and latest block header are not the same") + } + if blockHeader.Number.Int64() != int64(1) { + t.Errorf("did not get blockheader for block 1. instead got block %v", blockHeader.Number.Int64()) + } + + block, err := sim.BlockByNumber(bgCtx, big.NewInt(1)) + if err != nil { + t.Errorf("could not get block for blockheight of 1: %v", err) + } + + if block.Hash() != blockHeader.Hash() { + t.Errorf("block hash and block header hash do not match. expected %v, got %v", block.Hash(), blockHeader.Hash()) + } +} + +func TestTransactionCount(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + currentBlock, err := sim.BlockByNumber(bgCtx, nil) + if err != nil || currentBlock == nil { + t.Error("could not get current block") + } + + count, err := sim.TransactionCount(bgCtx, currentBlock.Hash()) + if err != nil { + t.Error("could not get current block's transaction count") + } + + if count != 0 { + t.Errorf("expected transaction count of %v does not match actual count of %v", 0, count) + } + // create a signed transaction to send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + + // send tx to simulated backend + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not add tx to pending block: %v", err) + } + + sim.Commit(false) + + lastBlock, err := sim.BlockByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get header for tip of chain: %v", err) + } + + count, err = sim.TransactionCount(bgCtx, lastBlock.Hash()) + if err != nil { + t.Error("could not get current block's transaction count") + } + + if count != 1 { + t.Errorf("expected transaction count of %v does not match actual count of %v", 1, count) + } +} + +func TestTransactionInBlock(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + transaction, err := sim.TransactionInBlock(bgCtx, sim.acceptedBlock.Hash(), uint(0)) + if err == nil && err != errTransactionDoesNotExist { + t.Errorf("expected a transaction does not exist error to be received but received %v", err) + } + if transaction != nil { + t.Errorf("expected transaction to be nil but received %v", transaction) + } + + // expect accepted nonce to be 0 since account has not been used + acceptedNonce, err := sim.AcceptedNonceAt(bgCtx, testAddr) + if err != nil { + t.Errorf("did not get the pending nonce: %v", err) + } + + if acceptedNonce != uint64(0) { + t.Errorf("expected pending nonce of 0 got %v", acceptedNonce) + } + // create a signed transaction to send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + + // send tx to simulated backend + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not add tx to pending block: %v", err) + } + + sim.Commit(false) + + lastBlock, err := sim.BlockByNumber(bgCtx, nil) + if err != nil { + t.Errorf("could not get header for tip of chain: %v", err) + } + + transaction, err = sim.TransactionInBlock(bgCtx, lastBlock.Hash(), uint(1)) + if err == nil && err != errTransactionDoesNotExist { + t.Errorf("expected a transaction does not exist error to be received but received %v", err) + } + if transaction != nil { + t.Errorf("expected transaction to be nil but received %v", transaction) + } + + transaction, err = sim.TransactionInBlock(bgCtx, lastBlock.Hash(), uint(0)) + if err != nil { + t.Errorf("could not get transaction in the lastest block with hash %v: %v", lastBlock.Hash().String(), err) + } + + if signedTx.Hash().String() != transaction.Hash().String() { + t.Errorf("received transaction that did not match the sent transaction. expected hash %v, got hash %v", signedTx.Hash().String(), transaction.Hash().String()) + } +} + +func TestAcceptedNonceAt(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + // expect accepted nonce to be 0 since account has not been used + acceptedNonce, err := sim.AcceptedNonceAt(bgCtx, testAddr) + if err != nil { + t.Errorf("did not get the accepted nonce: %v", err) + } + + if acceptedNonce != uint64(0) { + t.Errorf("expected accepted nonce of 0 got %v", acceptedNonce) + } + + // create a signed transaction to send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + + // send tx to simulated backend + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not add tx to pending block: %v", err) + } + + // expect accepted nonce to be 1 since account has submitted one transaction + acceptedNonce, err = sim.AcceptedNonceAt(bgCtx, testAddr) + if err != nil { + t.Errorf("did not get the accepted nonce: %v", err) + } + + if acceptedNonce != uint64(1) { + t.Errorf("expected accepted nonce of 1 got %v", acceptedNonce) + } + + // make a new transaction with a nonce of 1 + tx = types.NewTransaction(uint64(1), testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer = types.NewLondonSigner(big.NewInt(1337)) + signedTx, err = types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not send tx: %v", err) + } + + // expect accepted nonce to be 2 since account now has two transactions + acceptedNonce, err = sim.AcceptedNonceAt(bgCtx, testAddr) + if err != nil { + t.Errorf("did not get the accepted nonce: %v", err) + } + + if acceptedNonce != uint64(2) { + t.Errorf("expected accepted nonce of 2 got %v", acceptedNonce) + } +} + +func TestTransactionReceipt(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + // create a signed transaction to send + head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewTransaction(uint64(0), testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) + signer := types.NewLondonSigner(big.NewInt(1337)) + signedTx, err := types.SignTx(tx, signer, testKey) + if err != nil { + t.Errorf("could not sign tx: %v", err) + } + + // send tx to simulated backend + err = sim.SendTransaction(bgCtx, signedTx) + if err != nil { + t.Errorf("could not add tx to pending block: %v", err) + } + sim.Commit(true) + + receipt, err := sim.TransactionReceipt(bgCtx, signedTx.Hash()) + if err != nil { + t.Errorf("could not get transaction receipt: %v", err) + } + + if receipt.ContractAddress != testAddr && receipt.TxHash != signedTx.Hash() { + t.Errorf("received receipt is not correct: %v", receipt) + } +} + +func TestSuggestGasPrice(t *testing.T) { + sim := NewSimulatedBackend( + core.GenesisAlloc{}, + 10000000, + ) + defer sim.Close() + bgCtx := context.Background() + gasPrice, err := sim.SuggestGasPrice(bgCtx) + if err != nil { + t.Errorf("could not get gas price: %v", err) + } + if gasPrice.Uint64() != sim.acceptedBlock.Header().BaseFee.Uint64() { + t.Errorf("gas price was not expected value of %v. actual: %v", sim.acceptedBlock.Header().BaseFee.Uint64(), gasPrice.Uint64()) + } +} + +func TestAcceptedCodeAt(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + code, err := sim.CodeAt(bgCtx, testAddr, nil) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + if len(code) != 0 { + t.Errorf("got code for account that does not have contract code") + } + + parsed, err := abi.JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + auth, _ := bind.NewKeyedTransactorWithChainID(testKey, big.NewInt(1337)) + contractAddr, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(abiBin), sim) + if err != nil { + t.Errorf("could not deploy contract: %v tx: %v contract: %v", err, tx, contract) + } + + code, err = sim.AcceptedCodeAt(bgCtx, contractAddr) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + if len(code) == 0 { + t.Errorf("did not get code for account that has contract code") + } + // ensure code received equals code deployed + if !bytes.Equal(code, common.FromHex(deployedCode)) { + t.Errorf("code received did not match expected deployed code:\n expected %v\n actual %v", common.FromHex(deployedCode), code) + } +} + +func TestCodeAt(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + code, err := sim.CodeAt(bgCtx, testAddr, nil) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + if len(code) != 0 { + t.Errorf("got code for account that does not have contract code") + } + + parsed, err := abi.JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + auth, _ := bind.NewKeyedTransactorWithChainID(testKey, big.NewInt(1337)) + contractAddr, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(abiBin), sim) + if err != nil { + t.Errorf("could not deploy contract: %v tx: %v contract: %v", err, tx, contract) + } + + sim.Commit(false) + code, err = sim.CodeAt(bgCtx, contractAddr, nil) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + if len(code) == 0 { + t.Errorf("did not get code for account that has contract code") + } + // ensure code received equals code deployed + if !bytes.Equal(code, common.FromHex(deployedCode)) { + t.Errorf("code received did not match expected deployed code:\n expected %v\n actual %v", common.FromHex(deployedCode), code) + } +} + +// When receive("X") is called with sender 0x00... and value 1, it produces this tx receipt: +// receipt{status=1 cgas=23949 bloom=00000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000040200000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 logs=[log: b6818c8064f645cd82d99b59a1a267d6d61117ef [75fd880d39c1daf53b6547ab6cb59451fc6452d27caa90e5b6649dd8293b9eed] 000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158 9ae378b6d4409eada347a5dc0c180f186cb62dc68fcc0f043425eb917335aa28 0 95d429d309bb9d753954195fe2d69bd140b4ae731b9b5b605c34323de162cf00 0]} +func TestPendingAndCallContract(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + parsed, err := abi.JSON(strings.NewReader(abiJSON)) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + contractAuth, _ := bind.NewKeyedTransactorWithChainID(testKey, big.NewInt(1337)) + addr, _, _, err := bind.DeployContract(contractAuth, parsed, common.FromHex(abiBin), sim) + if err != nil { + t.Errorf("could not deploy contract: %v", err) + } + + input, err := parsed.Pack("receive", []byte("X")) + if err != nil { + t.Errorf("could not pack receive function on contract: %v", err) + } + + // make sure you can call the contract in accepted state + res, err := sim.AcceptedCallContract(bgCtx, interfaces.CallMsg{ + From: testAddr, + To: &addr, + Data: input, + }) + if err != nil { + t.Errorf("could not call receive method on contract: %v", err) + } + if len(res) == 0 { + t.Errorf("result of contract call was empty: %v", res) + } + + // while comparing against the byte array is more exact, also compare against the human readable string for readability + if !bytes.Equal(res, expectedReturn) || !strings.Contains(string(res), "hello world") { + t.Errorf("response from calling contract was expected to be 'hello world' instead received %v", string(res)) + } + + sim.Commit(false) + + // make sure you can call the contract + res, err = sim.CallContract(bgCtx, interfaces.CallMsg{ + From: testAddr, + To: &addr, + Data: input, + }, nil) + if err != nil { + t.Errorf("could not call receive method on contract: %v", err) + } + if len(res) == 0 { + t.Errorf("result of contract call was empty: %v", res) + } + + if !bytes.Equal(res, expectedReturn) || !strings.Contains(string(res), "hello world") { + t.Errorf("response from calling contract was expected to be 'hello world' instead received %v", string(res)) + } +} + +// This test is based on the following contract: +/* +contract Reverter { + function revertString() public pure{ + require(false, "some error"); + } + function revertNoString() public pure { + require(false, ""); + } + function revertASM() public pure { + assembly { + revert(0x0, 0x0) + } + } + function noRevert() public pure { + assembly { + // Assembles something that looks like require(false, "some error") but is not reverted + mstore(0x0, 0x08c379a000000000000000000000000000000000000000000000000000000000) + mstore(0x4, 0x0000000000000000000000000000000000000000000000000000000000000020) + mstore(0x24, 0x000000000000000000000000000000000000000000000000000000000000000a) + mstore(0x44, 0x736f6d65206572726f7200000000000000000000000000000000000000000000) + return(0x0, 0x64) + } + } +}*/ +func TestCallContractRevert(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + sim := simTestBackend(testAddr) + defer sim.Close() + bgCtx := context.Background() + + reverterABI := `[{"inputs": [],"name": "noRevert","outputs": [],"stateMutability": "pure","type": "function"},{"inputs": [],"name": "revertASM","outputs": [],"stateMutability": "pure","type": "function"},{"inputs": [],"name": "revertNoString","outputs": [],"stateMutability": "pure","type": "function"},{"inputs": [],"name": "revertString","outputs": [],"stateMutability": "pure","type": "function"}]` + reverterBin := "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" + + parsed, err := abi.JSON(strings.NewReader(reverterABI)) + if err != nil { + t.Errorf("could not get code at test addr: %v", err) + } + contractAuth, _ := bind.NewKeyedTransactorWithChainID(testKey, big.NewInt(1337)) + addr, _, _, err := bind.DeployContract(contractAuth, parsed, common.FromHex(reverterBin), sim) + if err != nil { + t.Errorf("could not deploy contract: %v", err) + } + + inputs := make(map[string]interface{}, 3) + inputs["revertASM"] = nil + inputs["revertNoString"] = "" + inputs["revertString"] = "some error" + + call := make([]func([]byte) ([]byte, error), 2) + call[0] = func(input []byte) ([]byte, error) { + return sim.AcceptedCallContract(bgCtx, interfaces.CallMsg{ + From: testAddr, + To: &addr, + Data: input, + }) + } + call[1] = func(input []byte) ([]byte, error) { + return sim.CallContract(bgCtx, interfaces.CallMsg{ + From: testAddr, + To: &addr, + Data: input, + }, nil) + } + + // Run pending calls then commit + for _, cl := range call { + for key, val := range inputs { + input, err := parsed.Pack(key) + if err != nil { + t.Errorf("could not pack %v function on contract: %v", key, err) + } + + res, err := cl(input) + if err == nil { + t.Errorf("call to %v was not reverted", key) + } + if res != nil { + t.Errorf("result from %v was not nil: %v", key, res) + } + if val != nil { + rerr, ok := err.(*revertError) + if !ok { + t.Errorf("expect revert error") + } + if rerr.Error() != "execution reverted: "+val.(string) { + t.Errorf("error was malformed: got %v want %v", rerr.Error(), val) + } + } else { + // revert(0x0,0x0) + if err.Error() != "execution reverted" { + t.Errorf("error was malformed: got %v want %v", err, "execution reverted") + } + } + } + input, err := parsed.Pack("noRevert") + if err != nil { + t.Errorf("could not pack noRevert function on contract: %v", err) + } + res, err := cl(input) + if err != nil { + t.Error("call to noRevert was reverted") + } + if res == nil { + t.Errorf("result from noRevert was nil") + } + sim.Commit(false) + } +} + +// TestFork check that the chain length after a reorg is correct. +// Steps: +// 1. Save the current block which will serve as parent for the fork. +// 2. Mine n blocks with n ∈ [0, 20]. +// 3. Assert that the chain length is n. +// 4. Fork by using the parent block as ancestor. +// 5. Mine n+1 blocks which should trigger a reorg. +// 6. Assert that the chain length is n+1. +// Since Commit() was called 2n+1 times in total, +// having a chain length of just n+1 means that a reorg occurred. +func TestFork(t *testing.T) { + testAddr := crypto.PubkeyToAddress(testKey.PublicKey) + sim := simTestBackend(testAddr) + defer sim.Close() + // 1. + parent := sim.blockchain.CurrentBlock() + // 2. + n := int(rand.Int31n(21)) + for i := 0; i < n; i++ { + sim.Commit(false) + } + // 3. + if sim.blockchain.CurrentBlock().NumberU64() != uint64(n) { + t.Error("wrong chain length") + } + // 4. + sim.Fork(context.Background(), parent.Hash()) + // 5. + for i := 0; i < n+1; i++ { + sim.Commit(false) + } + // 6. + if sim.blockchain.CurrentBlock().NumberU64() != uint64(n+1) { + t.Error("wrong chain length") + } +} + +/* +Example contract to test event emission: + +pragma solidity >=0.7.0 <0.9.0; +contract Callable { + event Called(); + function Call() public { emit Called(); } +} +*/ +// The fork tests are commented out because transactions are not indexed in subnet-evm until they are marked +// as accepted, which breaks the logic of these tests. +// const callableAbi = "[{\"anonymous\":false,\"inputs\":[],\"name\":\"Called\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"Call\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]" + +// const callableBin = "6080604052348015600f57600080fd5b5060998061001e6000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c806334e2292114602d575b600080fd5b60336035565b005b7f81fab7a4a0aa961db47eefc81f143a5220e8c8495260dd65b1356f1d19d3c7b860405160405180910390a156fea2646970667358221220029436d24f3ac598ceca41d4d712e13ced6d70727f4cdc580667de66d2f51d8b64736f6c63430008010033" + +// // TestForkLogsReborn check that the simulated reorgs +// // correctly remove and reborn logs. +// // Steps: +// // 1. Deploy the Callable contract. +// // 2. Set up an event subscription. +// // 3. Save the current block which will serve as parent for the fork. +// // 4. Send a transaction. +// // 5. Check that the event was included. +// // 6. Fork by using the parent block as ancestor. +// // 7. Mine two blocks to trigger a reorg. +// // 8. Check that the event was removed. +// // 9. Re-send the transaction and mine a block. +// // 10. Check that the event was reborn. +// func TestForkLogsReborn(t *testing.T) { +// testAddr := crypto.PubkeyToAddress(testKey.PublicKey) +// sim := simTestBackend(testAddr) +// defer sim.Close() +// // 1. +// parsed, _ := abi.JSON(strings.NewReader(callableAbi)) +// auth, _ := bind.NewKeyedTransactorWithChainID(testKey, big.NewInt(1337)) +// _, _, contract, err := bind.DeployContract(auth, parsed, common.FromHex(callableBin), sim) +// if err != nil { +// t.Errorf("deploying contract: %v", err) +// } +// sim.Commit(false) +// // 2. +// logs, sub, err := contract.WatchLogs(nil, "Called") +// if err != nil { +// t.Errorf("watching logs: %v", err) +// } +// defer sub.Unsubscribe() +// // 3. +// parent := sim.blockchain.CurrentBlock() +// // 4. +// tx, err := contract.Transact(auth, "Call") +// if err != nil { +// t.Errorf("transacting: %v", err) +// } +// sim.Commit(false) +// // 5. +// log := <-logs +// if log.TxHash != tx.Hash() { +// t.Error("wrong event tx hash") +// } +// if log.Removed { +// t.Error("Event should be included") +// } +// // 6. +// if err := sim.Fork(context.Background(), parent.Hash()); err != nil { +// t.Errorf("forking: %v", err) +// } +// // 7. +// sim.Commit(false) +// sim.Commit(false) +// // 8. +// log = <-logs +// if log.TxHash != tx.Hash() { +// t.Error("wrong event tx hash") +// } +// if !log.Removed { +// t.Error("Event should be removed") +// } +// // 9. +// if err := sim.SendTransaction(context.Background(), tx); err != nil { +// t.Errorf("sending transaction: %v", err) +// } +// sim.Commit(false) +// // 10. +// log = <-logs +// if log.TxHash != tx.Hash() { +// t.Error("wrong event tx hash") +// } +// if log.Removed { +// t.Error("Event should be included") +// } +// } + +// // TestForkResendTx checks that re-sending a TX after a fork +// // is possible and does not cause a "nonce mismatch" panic. +// // Steps: +// // 1. Save the current block which will serve as parent for the fork. +// // 2. Send a transaction. +// // 3. Check that the TX is included in block 1. +// // 4. Fork by using the parent block as ancestor. +// // 5. Mine a block, Re-send the transaction and mine another one. +// // 6. Check that the TX is now included in block 2. +// func TestForkResendTx(t *testing.T) { +// testAddr := crypto.PubkeyToAddress(testKey.PublicKey) +// sim := simTestBackend(testAddr) +// defer sim.Close() +// // 1. +// parent := sim.blockchain.CurrentBlock() +// // 2. +// head, _ := sim.HeaderByNumber(context.Background(), nil) // Should be child's, good enough +// gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + +// _tx := types.NewTransaction(0, testAddr, big.NewInt(1000), params.TxGas, gasPrice, nil) +// signer := types.NewLondonSigner(big.NewInt(1337)) +// tx, _ := types.SignTx(_tx, signer, testKey) +// sim.SendTransaction(context.Background(), tx) +// sim.Commit(false) +// // 3. +// receipt, _ := sim.TransactionReceipt(context.Background(), tx.Hash()) +// if h := receipt.BlockNumber.Uint64(); h != 1 { +// t.Errorf("TX included in wrong block: %d", h) +// } +// // 4. +// if err := sim.Fork(context.Background(), parent.Hash()); err != nil { +// t.Errorf("forking: %v", err) +// } +// // 5. +// sim.Commit(false) +// if err := sim.SendTransaction(context.Background(), tx); err != nil { +// t.Errorf("sending transaction: %v", err) +// } +// sim.Commit(false) +// // 6. +// receipt, _ = sim.TransactionReceipt(context.Background(), tx.Hash()) +// if h := receipt.BlockNumber.Uint64(); h != 2 { +// t.Errorf("TX included in wrong block: %d", h) +// } +// } diff --git a/accounts/abi/bind/base.go b/accounts/abi/bind/base.go new file mode 100644 index 0000000000..edc1eb2123 --- /dev/null +++ b/accounts/abi/bind/base.go @@ -0,0 +1,536 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind + +import ( + "context" + "errors" + "fmt" + "math/big" + "strings" + "sync" + + "github.com/ava-labs/subnet-evm/accounts/abi" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/event" +) + +// SignerFn is a signer function callback when a contract requires a method to +// sign the transaction before submission. +type SignerFn func(common.Address, *types.Transaction) (*types.Transaction, error) + +// CallOpts is the collection of options to fine tune a contract call request. +type CallOpts struct { + Accepted bool // Whether to operate on the accepted state or the last known one + From common.Address // Optional the sender address, otherwise the first account is used + BlockNumber *big.Int // Optional the block number on which the call should be performed + Context context.Context // Network context to support cancellation and timeouts (nil = no timeout) +} + +// TransactOpts is the collection of authorization data required to create a +// valid Ethereum transaction. +type TransactOpts struct { + From common.Address // Ethereum account to send the transaction from + Nonce *big.Int // Nonce to use for the transaction execution (nil = use pending state) + Signer SignerFn // Method to use for signing the transaction (mandatory) + + Value *big.Int // Funds to transfer along the transaction (nil = 0 = no funds) + GasPrice *big.Int // Gas price to use for the transaction execution (nil = gas price oracle) + GasFeeCap *big.Int // Gas fee cap to use for the 1559 transaction execution (nil = gas price oracle) + GasTipCap *big.Int // Gas priority fee cap to use for the 1559 transaction execution (nil = gas price oracle) + GasLimit uint64 // Gas limit to set for the transaction execution (0 = estimate) + + Context context.Context // Network context to support cancellation and timeouts (nil = no timeout) + + NoSend bool // Do all transact steps but do not send the transaction +} + +// FilterOpts is the collection of options to fine tune filtering for events +// within a bound contract. +type FilterOpts struct { + Start uint64 // Start of the queried range + End *uint64 // End of the range (nil = latest) + + Context context.Context // Network context to support cancellation and timeouts (nil = no timeout) +} + +// WatchOpts is the collection of options to fine tune subscribing for events +// within a bound contract. +type WatchOpts struct { + Start *uint64 // Start of the queried range (nil = latest) + Context context.Context // Network context to support cancellation and timeouts (nil = no timeout) +} + +// MetaData collects all metadata for a bound contract. +type MetaData struct { + mu sync.Mutex + Sigs map[string]string + Bin string + ABI string + ab *abi.ABI +} + +func (m *MetaData) GetAbi() (*abi.ABI, error) { + m.mu.Lock() + defer m.mu.Unlock() + if m.ab != nil { + return m.ab, nil + } + if parsed, err := abi.JSON(strings.NewReader(m.ABI)); err != nil { + return nil, err + } else { + m.ab = &parsed + } + return m.ab, nil +} + +// BoundContract is the base wrapper object that reflects a contract on the +// Ethereum network. It contains a collection of methods that are used by the +// higher level contract bindings to operate. +type BoundContract struct { + address common.Address // Deployment address of the contract on the Ethereum blockchain + abi abi.ABI // Reflect based ABI to access the correct Ethereum methods + caller ContractCaller // Read interface to interact with the blockchain + transactor ContractTransactor // Write interface to interact with the blockchain + filterer ContractFilterer // Event filtering to interact with the blockchain +} + +// NewBoundContract creates a low level contract interface through which calls +// and transactions may be made through. +func NewBoundContract(address common.Address, abi abi.ABI, caller ContractCaller, transactor ContractTransactor, filterer ContractFilterer) *BoundContract { + return &BoundContract{ + address: address, + abi: abi, + caller: caller, + transactor: transactor, + filterer: filterer, + } +} + +// DeployContract deploys a contract onto the Ethereum blockchain and binds the +// deployment address with a Go wrapper. +func DeployContract(opts *TransactOpts, abi abi.ABI, bytecode []byte, backend ContractBackend, params ...interface{}) (common.Address, *types.Transaction, *BoundContract, error) { + // Otherwise try to deploy the contract + c := NewBoundContract(common.Address{}, abi, backend, backend, backend) + + input, err := c.abi.Pack("", params...) + if err != nil { + return common.Address{}, nil, nil, err + } + tx, err := c.transact(opts, nil, append(bytecode, input...)) + if err != nil { + return common.Address{}, nil, nil, err + } + c.address = crypto.CreateAddress(opts.From, tx.Nonce()) + return c.address, tx, c, nil +} + +// Call invokes the (constant) contract method with params as input values and +// sets the output to result. The result type might be a single field for simple +// returns, a slice of interfaces for anonymous returns and a struct for named +// returns. +func (c *BoundContract) Call(opts *CallOpts, results *[]interface{}, method string, params ...interface{}) error { + // Don't crash on a lazy user + if opts == nil { + opts = new(CallOpts) + } + if results == nil { + results = new([]interface{}) + } + // Pack the input, call and unpack the results + input, err := c.abi.Pack(method, params...) + if err != nil { + return err + } + var ( + msg = interfaces.CallMsg{From: opts.From, To: &c.address, Data: input} + ctx = ensureContext(opts.Context) + code []byte + output []byte + ) + if opts.Accepted { + pb, ok := c.caller.(AcceptedContractCaller) + if !ok { + return ErrNoAcceptedState + } + output, err = pb.AcceptedCallContract(ctx, msg) + if err == nil && len(output) == 0 { + // Make sure we have a contract to operate on, and bail out otherwise. + if code, err = pb.AcceptedCodeAt(ctx, c.address); err != nil { + return err + } else if len(code) == 0 { + return ErrNoCode + } + } + } else { + output, err = c.caller.CallContract(ctx, msg, opts.BlockNumber) + if err != nil { + return err + } + if len(output) == 0 { + // Make sure we have a contract to operate on, and bail out otherwise. + if code, err = c.caller.CodeAt(ctx, c.address, opts.BlockNumber); err != nil { + return err + } else if len(code) == 0 { + return ErrNoCode + } + } + } + + if len(*results) == 0 { + res, err := c.abi.Unpack(method, output) + *results = res + return err + } + res := *results + return c.abi.UnpackIntoInterface(res[0], method, output) +} + +// Transact invokes the (paid) contract method with params as input values. +func (c *BoundContract) Transact(opts *TransactOpts, method string, params ...interface{}) (*types.Transaction, error) { + // Otherwise pack up the parameters and invoke the contract + input, err := c.abi.Pack(method, params...) + if err != nil { + return nil, err + } + // todo(rjl493456442) check the method is payable or not, + // reject invalid transaction at the first place + return c.transact(opts, &c.address, input) +} + +// RawTransact initiates a transaction with the given raw calldata as the input. +// It's usually used to initiate transactions for invoking **Fallback** function. +func (c *BoundContract) RawTransact(opts *TransactOpts, calldata []byte) (*types.Transaction, error) { + // todo(rjl493456442) check the method is payable or not, + // reject invalid transaction at the first place + return c.transact(opts, &c.address, calldata) +} + +// Transfer initiates a plain transaction to move funds to the contract, calling +// its default method if one is available. +func (c *BoundContract) Transfer(opts *TransactOpts) (*types.Transaction, error) { + // todo(rjl493456442) check the payable fallback or receive is defined + // or not, reject invalid transaction at the first place + return c.transact(opts, &c.address, nil) +} + +func (c *BoundContract) createDynamicTx(opts *TransactOpts, contract *common.Address, input []byte, head *types.Header) (*types.Transaction, error) { + // Normalize value + value := opts.Value + if value == nil { + value = new(big.Int) + } + // Estimate TipCap + gasTipCap := opts.GasTipCap + if gasTipCap == nil { + tip, err := c.transactor.SuggestGasTipCap(ensureContext(opts.Context)) + if err != nil { + return nil, err + } + gasTipCap = tip + } + // Estimate FeeCap + gasFeeCap := opts.GasFeeCap + if gasFeeCap == nil { + gasFeeCap = new(big.Int).Add( + gasTipCap, + new(big.Int).Mul(head.BaseFee, big.NewInt(2)), + ) + } + if gasFeeCap.Cmp(gasTipCap) < 0 { + return nil, fmt.Errorf("maxFeePerGas (%v) < maxPriorityFeePerGas (%v)", gasFeeCap, gasTipCap) + } + // Estimate GasLimit + gasLimit := opts.GasLimit + if opts.GasLimit == 0 { + var err error + gasLimit, err = c.estimateGasLimit(opts, contract, input, nil, gasTipCap, gasFeeCap, value) + if err != nil { + return nil, err + } + } + // create the transaction + nonce, err := c.getNonce(opts) + if err != nil { + return nil, err + } + baseTx := &types.DynamicFeeTx{ + To: contract, + Nonce: nonce, + GasFeeCap: gasFeeCap, + GasTipCap: gasTipCap, + Gas: gasLimit, + Value: value, + Data: input, + } + return types.NewTx(baseTx), nil +} + +func (c *BoundContract) createLegacyTx(opts *TransactOpts, contract *common.Address, input []byte) (*types.Transaction, error) { + if opts.GasFeeCap != nil || opts.GasTipCap != nil { + return nil, errors.New("maxFeePerGas or maxPriorityFeePerGas specified but london is not active yet") + } + // Normalize value + value := opts.Value + if value == nil { + value = new(big.Int) + } + // Estimate GasPrice + gasPrice := opts.GasPrice + if gasPrice == nil { + price, err := c.transactor.SuggestGasPrice(ensureContext(opts.Context)) + if err != nil { + return nil, err + } + gasPrice = price + } + // Estimate GasLimit + gasLimit := opts.GasLimit + if opts.GasLimit == 0 { + var err error + gasLimit, err = c.estimateGasLimit(opts, contract, input, gasPrice, nil, nil, value) + if err != nil { + return nil, err + } + } + // create the transaction + nonce, err := c.getNonce(opts) + if err != nil { + return nil, err + } + baseTx := &types.LegacyTx{ + To: contract, + Nonce: nonce, + GasPrice: gasPrice, + Gas: gasLimit, + Value: value, + Data: input, + } + return types.NewTx(baseTx), nil +} + +func (c *BoundContract) estimateGasLimit(opts *TransactOpts, contract *common.Address, input []byte, gasPrice, gasTipCap, gasFeeCap, value *big.Int) (uint64, error) { + if contract != nil { + // Gas estimation cannot succeed without code for method invocations. + if code, err := c.transactor.AcceptedCodeAt(ensureContext(opts.Context), c.address); err != nil { + return 0, err + } else if len(code) == 0 { + return 0, ErrNoCode + } + } + msg := interfaces.CallMsg{ + From: opts.From, + To: contract, + GasPrice: gasPrice, + GasTipCap: gasTipCap, + GasFeeCap: gasFeeCap, + Value: value, + Data: input, + } + return c.transactor.EstimateGas(ensureContext(opts.Context), msg) +} + +func (c *BoundContract) getNonce(opts *TransactOpts) (uint64, error) { + if opts.Nonce == nil { + return c.transactor.AcceptedNonceAt(ensureContext(opts.Context), opts.From) + } else { + return opts.Nonce.Uint64(), nil + } +} + +// transact executes an actual transaction invocation, first deriving any missing +// authorization fields, and then scheduling the transaction for execution. +func (c *BoundContract) transact(opts *TransactOpts, contract *common.Address, input []byte) (*types.Transaction, error) { + if opts.GasPrice != nil && (opts.GasFeeCap != nil || opts.GasTipCap != nil) { + return nil, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified") + } + // Create the transaction + var ( + rawTx *types.Transaction + err error + ) + if opts.GasPrice != nil { + rawTx, err = c.createLegacyTx(opts, contract, input) + } else { + // Only query for basefee if gasPrice not specified + if head, errHead := c.transactor.HeaderByNumber(ensureContext(opts.Context), nil); errHead != nil { + return nil, errHead + } else if head.BaseFee != nil { + rawTx, err = c.createDynamicTx(opts, contract, input, head) + } else { + // Chain is not London ready -> use legacy transaction + rawTx, err = c.createLegacyTx(opts, contract, input) + } + } + if err != nil { + return nil, err + } + // Sign the transaction and schedule it for execution + if opts.Signer == nil { + return nil, errors.New("no signer to authorize the transaction with") + } + signedTx, err := opts.Signer(opts.From, rawTx) + if err != nil { + return nil, err + } + if opts.NoSend { + return signedTx, nil + } + if err := c.transactor.SendTransaction(ensureContext(opts.Context), signedTx); err != nil { + return nil, err + } + return signedTx, nil +} + +// FilterLogs filters contract logs for past blocks, returning the necessary +// channels to construct a strongly typed bound iterator on top of them. +func (c *BoundContract) FilterLogs(opts *FilterOpts, name string, query ...[]interface{}) (chan types.Log, event.Subscription, error) { + // Don't crash on a lazy user + if opts == nil { + opts = new(FilterOpts) + } + // Append the event selector to the query parameters and construct the topic set + query = append([][]interface{}{{c.abi.Events[name].ID}}, query...) + + topics, err := abi.MakeTopics(query...) + if err != nil { + return nil, nil, err + } + // Start the background filtering + logs := make(chan types.Log, 128) + + config := interfaces.FilterQuery{ + Addresses: []common.Address{c.address}, + Topics: topics, + FromBlock: new(big.Int).SetUint64(opts.Start), + } + if opts.End != nil { + config.ToBlock = new(big.Int).SetUint64(*opts.End) + } + /* TODO(karalabe): Replace the rest of the method below with this when supported + sub, err := c.filterer.SubscribeFilterLogs(ensureContext(opts.Context), config, logs) + */ + buff, err := c.filterer.FilterLogs(ensureContext(opts.Context), config) + if err != nil { + return nil, nil, err + } + sub, err := event.NewSubscription(func(quit <-chan struct{}) error { + for _, log := range buff { + select { + case logs <- log: + case <-quit: + return nil + } + } + return nil + }), nil + if err != nil { + return nil, nil, err + } + return logs, sub, nil +} + +// WatchLogs filters subscribes to contract logs for future blocks, returning a +// subscription object that can be used to tear down the watcher. +func (c *BoundContract) WatchLogs(opts *WatchOpts, name string, query ...[]interface{}) (chan types.Log, event.Subscription, error) { + // Don't crash on a lazy user + if opts == nil { + opts = new(WatchOpts) + } + // Append the event selector to the query parameters and construct the topic set + query = append([][]interface{}{{c.abi.Events[name].ID}}, query...) + + topics, err := abi.MakeTopics(query...) + if err != nil { + return nil, nil, err + } + // Start the background filtering + logs := make(chan types.Log, 128) + + config := interfaces.FilterQuery{ + Addresses: []common.Address{c.address}, + Topics: topics, + } + if opts.Start != nil { + config.FromBlock = new(big.Int).SetUint64(*opts.Start) + } + sub, err := c.filterer.SubscribeFilterLogs(ensureContext(opts.Context), config, logs) + if err != nil { + return nil, nil, err + } + return logs, sub, nil +} + +// UnpackLog unpacks a retrieved log into the provided output structure. +func (c *BoundContract) UnpackLog(out interface{}, event string, log types.Log) error { + if log.Topics[0] != c.abi.Events[event].ID { + return fmt.Errorf("event signature mismatch") + } + if len(log.Data) > 0 { + if err := c.abi.UnpackIntoInterface(out, event, log.Data); err != nil { + return err + } + } + var indexed abi.Arguments + for _, arg := range c.abi.Events[event].Inputs { + if arg.Indexed { + indexed = append(indexed, arg) + } + } + return abi.ParseTopics(out, indexed, log.Topics[1:]) +} + +// UnpackLogIntoMap unpacks a retrieved log into the provided map. +func (c *BoundContract) UnpackLogIntoMap(out map[string]interface{}, event string, log types.Log) error { + if log.Topics[0] != c.abi.Events[event].ID { + return fmt.Errorf("event signature mismatch") + } + if len(log.Data) > 0 { + if err := c.abi.UnpackIntoMap(out, event, log.Data); err != nil { + return err + } + } + var indexed abi.Arguments + for _, arg := range c.abi.Events[event].Inputs { + if arg.Indexed { + indexed = append(indexed, arg) + } + } + return abi.ParseTopicsIntoMap(out, indexed, log.Topics[1:]) +} + +// ensureContext is a helper method to ensure a context is not nil, even if the +// user specified it as such. +func ensureContext(ctx context.Context) context.Context { + if ctx == nil { + return context.Background() + } + return ctx +} diff --git a/accounts/abi/bind/base_test.go b/accounts/abi/bind/base_test.go new file mode 100644 index 0000000000..173971a16e --- /dev/null +++ b/accounts/abi/bind/base_test.go @@ -0,0 +1,353 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind_test + +import ( + "context" + "math/big" + "reflect" + "strings" + "testing" + + "github.com/ava-labs/subnet-evm/accounts/abi" + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" + "github.com/stretchr/testify/assert" +) + +func mockSign(addr common.Address, tx *types.Transaction) (*types.Transaction, error) { return tx, nil } + +type mockTransactor struct { + baseFee *big.Int + gasTipCap *big.Int + gasPrice *big.Int + suggestGasTipCapCalled bool + suggestGasPriceCalled bool +} + +func (mt *mockTransactor) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) { + return &types.Header{BaseFee: mt.baseFee}, nil +} + +func (mt *mockTransactor) AcceptedCodeAt(ctx context.Context, account common.Address) ([]byte, error) { + return []byte{1}, nil +} + +func (mt *mockTransactor) AcceptedNonceAt(ctx context.Context, account common.Address) (uint64, error) { + return 0, nil +} + +func (mt *mockTransactor) SuggestGasPrice(ctx context.Context) (*big.Int, error) { + mt.suggestGasPriceCalled = true + return mt.gasPrice, nil +} + +func (mt *mockTransactor) SuggestGasTipCap(ctx context.Context) (*big.Int, error) { + mt.suggestGasTipCapCalled = true + return mt.gasTipCap, nil +} + +func (mt *mockTransactor) EstimateGas(ctx context.Context, call interfaces.CallMsg) (gas uint64, err error) { + return 0, nil +} + +func (mt *mockTransactor) SendTransaction(ctx context.Context, tx *types.Transaction) error { + return nil +} + +type mockCaller struct { + codeAtBlockNumber *big.Int + callContractBlockNumber *big.Int + acceptedCodeAtCalled bool + acceptedCallContractCalled bool +} + +func (mc *mockCaller) CodeAt(ctx context.Context, contract common.Address, blockNumber *big.Int) ([]byte, error) { + mc.codeAtBlockNumber = blockNumber + return []byte{1, 2, 3}, nil +} + +func (mc *mockCaller) CallContract(ctx context.Context, call interfaces.CallMsg, blockNumber *big.Int) ([]byte, error) { + mc.callContractBlockNumber = blockNumber + return nil, nil +} + +func (mc *mockCaller) AcceptedCodeAt(ctx context.Context, contract common.Address) ([]byte, error) { + mc.acceptedCodeAtCalled = true + return nil, nil +} + +func (mc *mockCaller) AcceptedCallContract(ctx context.Context, call interfaces.CallMsg) ([]byte, error) { + mc.acceptedCallContractCalled = true + return nil, nil +} + +func TestPassingBlockNumber(t *testing.T) { + mc := &mockCaller{} + + bc := bind.NewBoundContract(common.HexToAddress("0x0"), abi.ABI{ + Methods: map[string]abi.Method{ + "something": { + Name: "something", + Outputs: abi.Arguments{}, + }, + }, + }, mc, nil, nil) + + blockNumber := big.NewInt(42) + + bc.Call(&bind.CallOpts{BlockNumber: blockNumber}, nil, "something") + + if mc.callContractBlockNumber != blockNumber { + t.Fatalf("CallContract() was not passed the block number") + } + + if mc.codeAtBlockNumber != blockNumber { + t.Fatalf("CodeAt() was not passed the block number") + } + + bc.Call(&bind.CallOpts{}, nil, "something") + + if mc.callContractBlockNumber != nil { + t.Fatalf("CallContract() was passed a block number when it should not have been") + } + + if mc.codeAtBlockNumber != nil { + t.Fatalf("CodeAt() was passed a block number when it should not have been") + } + + bc.Call(&bind.CallOpts{BlockNumber: blockNumber, Accepted: true}, nil, "something") + + if !mc.acceptedCallContractCalled { + t.Fatalf("CallContract() was not passed the block number") + } + + if !mc.acceptedCodeAtCalled { + t.Fatalf("CodeAt() was not passed the block number") + } +} + +const hexData = "0x000000000000000000000000376c47978271565f56deb45495afa69e59c16ab200000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000158" + +func TestUnpackIndexedStringTyLogIntoMap(t *testing.T) { + hash := crypto.Keccak256Hash([]byte("testName")) + topics := []common.Hash{ + crypto.Keccak256Hash([]byte("received(string,address,uint256,bytes)")), + hash, + } + mockLog := newMockLog(topics, common.HexToHash("0x0")) + + abiString := `[{"anonymous":false,"inputs":[{"indexed":true,"name":"name","type":"string"},{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"}]` + parsedAbi, _ := abi.JSON(strings.NewReader(abiString)) + bc := bind.NewBoundContract(common.HexToAddress("0x0"), parsedAbi, nil, nil, nil) + + expectedReceivedMap := map[string]interface{}{ + "name": hash, + "sender": common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2"), + "amount": big.NewInt(1), + "memo": []byte{88}, + } + unpackAndCheck(t, bc, expectedReceivedMap, mockLog) +} + +func TestUnpackIndexedSliceTyLogIntoMap(t *testing.T) { + sliceBytes, err := rlp.EncodeToBytes([]string{"name1", "name2", "name3", "name4"}) + if err != nil { + t.Fatal(err) + } + hash := crypto.Keccak256Hash(sliceBytes) + topics := []common.Hash{ + crypto.Keccak256Hash([]byte("received(string[],address,uint256,bytes)")), + hash, + } + mockLog := newMockLog(topics, common.HexToHash("0x0")) + + abiString := `[{"anonymous":false,"inputs":[{"indexed":true,"name":"names","type":"string[]"},{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"}]` + parsedAbi, _ := abi.JSON(strings.NewReader(abiString)) + bc := bind.NewBoundContract(common.HexToAddress("0x0"), parsedAbi, nil, nil, nil) + + expectedReceivedMap := map[string]interface{}{ + "names": hash, + "sender": common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2"), + "amount": big.NewInt(1), + "memo": []byte{88}, + } + unpackAndCheck(t, bc, expectedReceivedMap, mockLog) +} + +func TestUnpackIndexedArrayTyLogIntoMap(t *testing.T) { + arrBytes, err := rlp.EncodeToBytes([2]common.Address{common.HexToAddress("0x0"), common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2")}) + if err != nil { + t.Fatal(err) + } + hash := crypto.Keccak256Hash(arrBytes) + topics := []common.Hash{ + crypto.Keccak256Hash([]byte("received(address[2],address,uint256,bytes)")), + hash, + } + mockLog := newMockLog(topics, common.HexToHash("0x0")) + + abiString := `[{"anonymous":false,"inputs":[{"indexed":true,"name":"addresses","type":"address[2]"},{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"}]` + parsedAbi, _ := abi.JSON(strings.NewReader(abiString)) + bc := bind.NewBoundContract(common.HexToAddress("0x0"), parsedAbi, nil, nil, nil) + + expectedReceivedMap := map[string]interface{}{ + "addresses": hash, + "sender": common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2"), + "amount": big.NewInt(1), + "memo": []byte{88}, + } + unpackAndCheck(t, bc, expectedReceivedMap, mockLog) +} + +func TestUnpackIndexedFuncTyLogIntoMap(t *testing.T) { + mockAddress := common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2") + addrBytes := mockAddress.Bytes() + hash := crypto.Keccak256Hash([]byte("mockFunction(address,uint)")) + functionSelector := hash[:4] + functionTyBytes := append(addrBytes, functionSelector...) + var functionTy [24]byte + copy(functionTy[:], functionTyBytes[0:24]) + topics := []common.Hash{ + crypto.Keccak256Hash([]byte("received(function,address,uint256,bytes)")), + common.BytesToHash(functionTyBytes), + } + mockLog := newMockLog(topics, common.HexToHash("0x5c698f13940a2153440c6d19660878bc90219d9298fdcf37365aa8d88d40fc42")) + abiString := `[{"anonymous":false,"inputs":[{"indexed":true,"name":"function","type":"function"},{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"}]` + parsedAbi, _ := abi.JSON(strings.NewReader(abiString)) + bc := bind.NewBoundContract(common.HexToAddress("0x0"), parsedAbi, nil, nil, nil) + + expectedReceivedMap := map[string]interface{}{ + "function": functionTy, + "sender": common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2"), + "amount": big.NewInt(1), + "memo": []byte{88}, + } + unpackAndCheck(t, bc, expectedReceivedMap, mockLog) +} + +func TestUnpackIndexedBytesTyLogIntoMap(t *testing.T) { + bytes := []byte{1, 2, 3, 4, 5} + hash := crypto.Keccak256Hash(bytes) + topics := []common.Hash{ + crypto.Keccak256Hash([]byte("received(bytes,address,uint256,bytes)")), + hash, + } + mockLog := newMockLog(topics, common.HexToHash("0x5c698f13940a2153440c6d19660878bc90219d9298fdcf37365aa8d88d40fc42")) + + abiString := `[{"anonymous":false,"inputs":[{"indexed":true,"name":"content","type":"bytes"},{"indexed":false,"name":"sender","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"memo","type":"bytes"}],"name":"received","type":"event"}]` + parsedAbi, _ := abi.JSON(strings.NewReader(abiString)) + bc := bind.NewBoundContract(common.HexToAddress("0x0"), parsedAbi, nil, nil, nil) + + expectedReceivedMap := map[string]interface{}{ + "content": hash, + "sender": common.HexToAddress("0x376c47978271565f56DEB45495afa69E59c16Ab2"), + "amount": big.NewInt(1), + "memo": []byte{88}, + } + unpackAndCheck(t, bc, expectedReceivedMap, mockLog) +} + +func TestTransactGasFee(t *testing.T) { + assert := assert.New(t) + + // GasTipCap and GasFeeCap + // When opts.GasTipCap and opts.GasFeeCap are nil + mt := &mockTransactor{baseFee: big.NewInt(100), gasTipCap: big.NewInt(5)} + bc := bind.NewBoundContract(common.Address{}, abi.ABI{}, nil, mt, nil) + opts := &bind.TransactOpts{Signer: mockSign} + tx, err := bc.Transact(opts, "") + assert.Nil(err) + assert.Equal(big.NewInt(5), tx.GasTipCap()) + assert.Equal(big.NewInt(205), tx.GasFeeCap()) + assert.Nil(opts.GasTipCap) + assert.Nil(opts.GasFeeCap) + assert.True(mt.suggestGasTipCapCalled) + + // Second call to Transact should use latest suggested GasTipCap + mt.gasTipCap = big.NewInt(6) + mt.suggestGasTipCapCalled = false + tx, err = bc.Transact(opts, "") + assert.Nil(err) + assert.Equal(big.NewInt(6), tx.GasTipCap()) + assert.Equal(big.NewInt(206), tx.GasFeeCap()) + assert.True(mt.suggestGasTipCapCalled) + + // GasPrice + // When opts.GasPrice is nil + mt = &mockTransactor{gasPrice: big.NewInt(5)} + bc = bind.NewBoundContract(common.Address{}, abi.ABI{}, nil, mt, nil) + opts = &bind.TransactOpts{Signer: mockSign} + tx, err = bc.Transact(opts, "") + assert.Nil(err) + assert.Equal(big.NewInt(5), tx.GasPrice()) + assert.Nil(opts.GasPrice) + assert.True(mt.suggestGasPriceCalled) + + // Second call to Transact should use latest suggested GasPrice + mt.gasPrice = big.NewInt(6) + mt.suggestGasPriceCalled = false + tx, err = bc.Transact(opts, "") + assert.Nil(err) + assert.Equal(big.NewInt(6), tx.GasPrice()) + assert.True(mt.suggestGasPriceCalled) +} + +func unpackAndCheck(t *testing.T, bc *bind.BoundContract, expected map[string]interface{}, mockLog types.Log) { + received := make(map[string]interface{}) + if err := bc.UnpackLogIntoMap(received, "received", mockLog); err != nil { + t.Error(err) + } + + if len(received) != len(expected) { + t.Fatalf("unpacked map length %v not equal expected length of %v", len(received), len(expected)) + } + for name, elem := range expected { + if !reflect.DeepEqual(elem, received[name]) { + t.Errorf("field %v does not match expected, want %v, got %v", name, elem, received[name]) + } + } +} + +func newMockLog(topics []common.Hash, txHash common.Hash) types.Log { + return types.Log{ + Address: common.HexToAddress("0x0"), + Topics: topics, + Data: hexutil.MustDecode(hexData), + BlockNumber: uint64(26), + TxHash: txHash, + TxIndex: 111, + BlockHash: common.BytesToHash([]byte{1, 2, 3, 4, 5}), + Index: 7, + Removed: false, + } +} diff --git a/accounts/abi/bind/bind.go b/accounts/abi/bind/bind.go new file mode 100644 index 0000000000..ac3673779b --- /dev/null +++ b/accounts/abi/bind/bind.go @@ -0,0 +1,596 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package bind generates Ethereum contract Go bindings. +// +// Detailed usage document and tutorial available on the go-ethereum Wiki page: +// https://github.com/ethereum/go-ethereum/wiki/Native-DApps:-Go-bindings-to-Ethereum-contracts +package bind + +import ( + "bytes" + "errors" + "fmt" + "go/format" + "regexp" + "strings" + "text/template" + "unicode" + + "github.com/ava-labs/subnet-evm/accounts/abi" + "github.com/ethereum/go-ethereum/log" +) + +// Lang is a target programming language selector to generate bindings for. +type Lang int + +const ( + LangGo Lang = iota + LangJava + LangObjC +) + +// Bind generates a Go wrapper around a contract ABI. This wrapper isn't meant +// to be used as is in client code, but rather as an intermediate struct which +// enforces compile time type safety and naming convention opposed to having to +// manually maintain hard coded strings that break on runtime. +func Bind(types []string, abis []string, bytecodes []string, fsigs []map[string]string, pkg string, lang Lang, libs map[string]string, aliases map[string]string) (string, error) { + var ( + // contracts is the map of each individual contract requested binding + contracts = make(map[string]*tmplContract) + + // structs is the map of all redeclared structs shared by passed contracts. + structs = make(map[string]*tmplStruct) + + // isLib is the map used to flag each encountered library as such + isLib = make(map[string]struct{}) + ) + for i := 0; i < len(types); i++ { + // Parse the actual ABI to generate the binding for + evmABI, err := abi.JSON(strings.NewReader(abis[i])) + if err != nil { + return "", err + } + // Strip any whitespace from the JSON ABI + strippedABI := strings.Map(func(r rune) rune { + if unicode.IsSpace(r) { + return -1 + } + return r + }, abis[i]) + + // Extract the call and transact methods; events, struct definitions; and sort them alphabetically + var ( + calls = make(map[string]*tmplMethod) + transacts = make(map[string]*tmplMethod) + events = make(map[string]*tmplEvent) + fallback *tmplMethod + receive *tmplMethod + + // identifiers are used to detect duplicated identifiers of functions + // and events. For all calls, transacts and events, abigen will generate + // corresponding bindings. However we have to ensure there is no + // identifier collisions in the bindings of these categories. + callIdentifiers = make(map[string]bool) + transactIdentifiers = make(map[string]bool) + eventIdentifiers = make(map[string]bool) + ) + for _, original := range evmABI.Methods { + // Normalize the method for capital cases and non-anonymous inputs/outputs + normalized := original + normalizedName := methodNormalizer[lang](alias(aliases, original.Name)) + // Ensure there is no duplicated identifier + identifiers := callIdentifiers + if !original.IsConstant() { + identifiers = transactIdentifiers + } + if identifiers[normalizedName] { + return "", fmt.Errorf("duplicated identifier \"%s\"(normalized \"%s\"), use --alias for renaming", original.Name, normalizedName) + } + identifiers[normalizedName] = true + normalized.Name = normalizedName + normalized.Inputs = make([]abi.Argument, len(original.Inputs)) + copy(normalized.Inputs, original.Inputs) + for j, input := range normalized.Inputs { + if input.Name == "" { + normalized.Inputs[j].Name = fmt.Sprintf("arg%d", j) + } + if hasStruct(input.Type) { + bindStructType[lang](input.Type, structs) + } + } + normalized.Outputs = make([]abi.Argument, len(original.Outputs)) + copy(normalized.Outputs, original.Outputs) + for j, output := range normalized.Outputs { + if output.Name != "" { + normalized.Outputs[j].Name = capitalise(output.Name) + } + if hasStruct(output.Type) { + bindStructType[lang](output.Type, structs) + } + } + // Append the methods to the call or transact lists + if original.IsConstant() { + calls[original.Name] = &tmplMethod{Original: original, Normalized: normalized, Structured: structured(original.Outputs)} + } else { + transacts[original.Name] = &tmplMethod{Original: original, Normalized: normalized, Structured: structured(original.Outputs)} + } + } + for _, original := range evmABI.Events { + // Skip anonymous events as they don't support explicit filtering + if original.Anonymous { + continue + } + // Normalize the event for capital cases and non-anonymous outputs + normalized := original + + // Ensure there is no duplicated identifier + normalizedName := methodNormalizer[lang](alias(aliases, original.Name)) + if eventIdentifiers[normalizedName] { + return "", fmt.Errorf("duplicated identifier \"%s\"(normalized \"%s\"), use --alias for renaming", original.Name, normalizedName) + } + eventIdentifiers[normalizedName] = true + normalized.Name = normalizedName + + normalized.Inputs = make([]abi.Argument, len(original.Inputs)) + copy(normalized.Inputs, original.Inputs) + for j, input := range normalized.Inputs { + if input.Name == "" { + normalized.Inputs[j].Name = fmt.Sprintf("arg%d", j) + } + if hasStruct(input.Type) { + bindStructType[lang](input.Type, structs) + } + } + // Append the event to the accumulator list + events[original.Name] = &tmplEvent{Original: original, Normalized: normalized} + } + // Add two special fallback functions if they exist + if evmABI.HasFallback() { + fallback = &tmplMethod{Original: evmABI.Fallback} + } + if evmABI.HasReceive() { + receive = &tmplMethod{Original: evmABI.Receive} + } + // There is no easy way to pass arbitrary java objects to the Go side. + if len(structs) > 0 && lang == LangJava { + return "", errors.New("java binding for tuple arguments is not supported yet") + } + + contracts[types[i]] = &tmplContract{ + Type: capitalise(types[i]), + InputABI: strings.Replace(strippedABI, "\"", "\\\"", -1), + InputBin: strings.TrimPrefix(strings.TrimSpace(bytecodes[i]), "0x"), + Constructor: evmABI.Constructor, + Calls: calls, + Transacts: transacts, + Fallback: fallback, + Receive: receive, + Events: events, + Libraries: make(map[string]string), + } + // Function 4-byte signatures are stored in the same sequence + // as types, if available. + if len(fsigs) > i { + contracts[types[i]].FuncSigs = fsigs[i] + } + // Parse library references. + for pattern, name := range libs { + matched, err := regexp.Match("__\\$"+pattern+"\\$__", []byte(contracts[types[i]].InputBin)) + if err != nil { + log.Error("Could not search for pattern", "pattern", pattern, "contract", contracts[types[i]], "err", err) + } + if matched { + contracts[types[i]].Libraries[pattern] = name + // keep track that this type is a library + if _, ok := isLib[name]; !ok { + isLib[name] = struct{}{} + } + } + } + } + // Check if that type has already been identified as a library + for i := 0; i < len(types); i++ { + _, ok := isLib[types[i]] + contracts[types[i]].Library = ok + } + // Generate the contract template data content and render it + data := &tmplData{ + Package: pkg, + Contracts: contracts, + Libraries: libs, + Structs: structs, + } + buffer := new(bytes.Buffer) + + funcs := map[string]interface{}{ + "bindtype": bindType[lang], + "bindtopictype": bindTopicType[lang], + "namedtype": namedType[lang], + "capitalise": capitalise, + "decapitalise": decapitalise, + } + tmpl := template.Must(template.New("").Funcs(funcs).Parse(tmplSource[lang])) + if err := tmpl.Execute(buffer, data); err != nil { + return "", err + } + // For Go bindings pass the code through gofmt to clean it up + if lang == LangGo { + code, err := format.Source(buffer.Bytes()) + if err != nil { + return "", fmt.Errorf("%v\n%s", err, buffer) + } + return string(code), nil + } + // For all others just return as is for now + return buffer.String(), nil +} + +// bindType is a set of type binders that convert Solidity types to some supported +// programming language types. +var bindType = map[Lang]func(kind abi.Type, structs map[string]*tmplStruct) string{ + LangGo: bindTypeGo, + LangJava: bindTypeJava, +} + +// bindBasicTypeGo converts basic solidity types(except array, slice and tuple) to Go ones. +func bindBasicTypeGo(kind abi.Type) string { + switch kind.T { + case abi.AddressTy: + return "common.Address" + case abi.IntTy, abi.UintTy: + parts := regexp.MustCompile(`(u)?int([0-9]*)`).FindStringSubmatch(kind.String()) + switch parts[2] { + case "8", "16", "32", "64": + return fmt.Sprintf("%sint%s", parts[1], parts[2]) + } + return "*big.Int" + case abi.FixedBytesTy: + return fmt.Sprintf("[%d]byte", kind.Size) + case abi.BytesTy: + return "[]byte" + case abi.FunctionTy: + return "[24]byte" + default: + // string, bool types + return kind.String() + } +} + +// bindTypeGo converts solidity types to Go ones. Since there is no clear mapping +// from all Solidity types to Go ones (e.g. uint17), those that cannot be exactly +// mapped will use an upscaled type (e.g. BigDecimal). +func bindTypeGo(kind abi.Type, structs map[string]*tmplStruct) string { + switch kind.T { + case abi.TupleTy: + return structs[kind.TupleRawName+kind.String()].Name + case abi.ArrayTy: + return fmt.Sprintf("[%d]", kind.Size) + bindTypeGo(*kind.Elem, structs) + case abi.SliceTy: + return "[]" + bindTypeGo(*kind.Elem, structs) + default: + return bindBasicTypeGo(kind) + } +} + +// bindBasicTypeJava converts basic solidity types(except array, slice and tuple) to Java ones. +func bindBasicTypeJava(kind abi.Type) string { + switch kind.T { + case abi.AddressTy: + return "Address" + case abi.IntTy, abi.UintTy: + // Note that uint and int (without digits) are also matched, + // these are size 256, and will translate to BigInt (the default). + parts := regexp.MustCompile(`(u)?int([0-9]*)`).FindStringSubmatch(kind.String()) + if len(parts) != 3 { + return kind.String() + } + // All unsigned integers should be translated to BigInt since gomobile doesn't + // support them. + if parts[1] == "u" { + return "BigInt" + } + + namedSize := map[string]string{ + "8": "byte", + "16": "short", + "32": "int", + "64": "long", + }[parts[2]] + + // default to BigInt + if namedSize == "" { + namedSize = "BigInt" + } + return namedSize + case abi.FixedBytesTy, abi.BytesTy: + return "byte[]" + case abi.BoolTy: + return "boolean" + case abi.StringTy: + return "String" + case abi.FunctionTy: + return "byte[24]" + default: + return kind.String() + } +} + +// pluralizeJavaType explicitly converts multidimensional types to predefined +// types in go side. +func pluralizeJavaType(typ string) string { + switch typ { + case "boolean": + return "Bools" + case "String": + return "Strings" + case "Address": + return "Addresses" + case "byte[]": + return "Binaries" + case "BigInt": + return "BigInts" + } + return typ + "[]" +} + +// bindTypeJava converts a Solidity type to a Java one. Since there is no clear mapping +// from all Solidity types to Java ones (e.g. uint17), those that cannot be exactly +// mapped will use an upscaled type (e.g. BigDecimal). +func bindTypeJava(kind abi.Type, structs map[string]*tmplStruct) string { + switch kind.T { + case abi.TupleTy: + return structs[kind.TupleRawName+kind.String()].Name + case abi.ArrayTy, abi.SliceTy: + return pluralizeJavaType(bindTypeJava(*kind.Elem, structs)) + default: + return bindBasicTypeJava(kind) + } +} + +// bindTopicType is a set of type binders that convert Solidity types to some +// supported programming language topic types. +var bindTopicType = map[Lang]func(kind abi.Type, structs map[string]*tmplStruct) string{ + LangGo: bindTopicTypeGo, + LangJava: bindTopicTypeJava, +} + +// bindTopicTypeGo converts a Solidity topic type to a Go one. It is almost the same +// functionality as for simple types, but dynamic types get converted to hashes. +func bindTopicTypeGo(kind abi.Type, structs map[string]*tmplStruct) string { + bound := bindTypeGo(kind, structs) + + // todo(rjl493456442) according solidity documentation, indexed event + // parameters that are not value types i.e. arrays and structs are not + // stored directly but instead a keccak256-hash of an encoding is stored. + // + // We only convert stringS and bytes to hash, still need to deal with + // array(both fixed-size and dynamic-size) and struct. + if bound == "string" || bound == "[]byte" { + bound = "common.Hash" + } + return bound +} + +// bindTopicTypeJava converts a Solidity topic type to a Java one. It is almost the same +// functionality as for simple types, but dynamic types get converted to hashes. +func bindTopicTypeJava(kind abi.Type, structs map[string]*tmplStruct) string { + bound := bindTypeJava(kind, structs) + + // todo(rjl493456442) according solidity documentation, indexed event + // parameters that are not value types i.e. arrays and structs are not + // stored directly but instead a keccak256-hash of an encoding is stored. + // + // We only convert strings and bytes to hash, still need to deal with + // array(both fixed-size and dynamic-size) and struct. + if bound == "String" || bound == "byte[]" { + bound = "Hash" + } + return bound +} + +// bindStructType is a set of type binders that convert Solidity tuple types to some supported +// programming language struct definition. +var bindStructType = map[Lang]func(kind abi.Type, structs map[string]*tmplStruct) string{ + LangGo: bindStructTypeGo, + LangJava: bindStructTypeJava, +} + +// bindStructTypeGo converts a Solidity tuple type to a Go one and records the mapping +// in the given map. +// Notably, this function will resolve and record nested struct recursively. +func bindStructTypeGo(kind abi.Type, structs map[string]*tmplStruct) string { + switch kind.T { + case abi.TupleTy: + // We compose a raw struct name and a canonical parameter expression + // together here. The reason is before solidity v0.5.11, kind.TupleRawName + // is empty, so we use canonical parameter expression to distinguish + // different struct definition. From the consideration of backward + // compatibility, we concat these two together so that if kind.TupleRawName + // is not empty, it can have unique id. + id := kind.TupleRawName + kind.String() + if s, exist := structs[id]; exist { + return s.Name + } + var fields []*tmplField + for i, elem := range kind.TupleElems { + field := bindStructTypeGo(*elem, structs) + fields = append(fields, &tmplField{Type: field, Name: capitalise(kind.TupleRawNames[i]), SolKind: *elem}) + } + name := kind.TupleRawName + if name == "" { + name = fmt.Sprintf("Struct%d", len(structs)) + } + structs[id] = &tmplStruct{ + Name: name, + Fields: fields, + } + return name + case abi.ArrayTy: + return fmt.Sprintf("[%d]", kind.Size) + bindStructTypeGo(*kind.Elem, structs) + case abi.SliceTy: + return "[]" + bindStructTypeGo(*kind.Elem, structs) + default: + return bindBasicTypeGo(kind) + } +} + +// bindStructTypeJava converts a Solidity tuple type to a Java one and records the mapping +// in the given map. +// Notably, this function will resolve and record nested struct recursively. +func bindStructTypeJava(kind abi.Type, structs map[string]*tmplStruct) string { + switch kind.T { + case abi.TupleTy: + // We compose a raw struct name and a canonical parameter expression + // together here. The reason is before solidity v0.5.11, kind.TupleRawName + // is empty, so we use canonical parameter expression to distinguish + // different struct definition. From the consideration of backward + // compatibility, we concat these two together so that if kind.TupleRawName + // is not empty, it can have unique id. + id := kind.TupleRawName + kind.String() + if s, exist := structs[id]; exist { + return s.Name + } + var fields []*tmplField + for i, elem := range kind.TupleElems { + field := bindStructTypeJava(*elem, structs) + fields = append(fields, &tmplField{Type: field, Name: decapitalise(kind.TupleRawNames[i]), SolKind: *elem}) + } + name := kind.TupleRawName + if name == "" { + name = fmt.Sprintf("Class%d", len(structs)) + } + structs[id] = &tmplStruct{ + Name: name, + Fields: fields, + } + return name + case abi.ArrayTy, abi.SliceTy: + return pluralizeJavaType(bindStructTypeJava(*kind.Elem, structs)) + default: + return bindBasicTypeJava(kind) + } +} + +// namedType is a set of functions that transform language specific types to +// named versions that may be used inside method names. +var namedType = map[Lang]func(string, abi.Type) string{ + LangGo: func(string, abi.Type) string { panic("this shouldn't be needed") }, + LangJava: namedTypeJava, +} + +// namedTypeJava converts some primitive data types to named variants that can +// be used as parts of method names. +func namedTypeJava(javaKind string, solKind abi.Type) string { + switch javaKind { + case "byte[]": + return "Binary" + case "boolean": + return "Bool" + default: + parts := regexp.MustCompile(`(u)?int([0-9]*)(\[[0-9]*\])?`).FindStringSubmatch(solKind.String()) + if len(parts) != 4 { + return javaKind + } + switch parts[2] { + case "8", "16", "32", "64": + if parts[3] == "" { + return capitalise(fmt.Sprintf("%sint%s", parts[1], parts[2])) + } + return capitalise(fmt.Sprintf("%sint%ss", parts[1], parts[2])) + + default: + return javaKind + } + } +} + +// alias returns an alias of the given string based on the aliasing rules +// or returns itself if no rule is matched. +func alias(aliases map[string]string, n string) string { + if alias, exist := aliases[n]; exist { + return alias + } + return n +} + +// methodNormalizer is a name transformer that modifies Solidity method names to +// conform to target language naming conventions. +var methodNormalizer = map[Lang]func(string) string{ + LangGo: abi.ToCamelCase, + LangJava: decapitalise, +} + +// capitalise makes a camel-case string which starts with an upper case character. +var capitalise = abi.ToCamelCase + +// decapitalise makes a camel-case string which starts with a lower case character. +func decapitalise(input string) string { + if len(input) == 0 { + return input + } + + goForm := abi.ToCamelCase(input) + return strings.ToLower(goForm[:1]) + goForm[1:] +} + +// structured checks whether a list of ABI data types has enough information to +// operate through a proper Go struct or if flat returns are needed. +func structured(args abi.Arguments) bool { + if len(args) < 2 { + return false + } + exists := make(map[string]bool) + for _, out := range args { + // If the name is anonymous, we can't organize into a struct + if out.Name == "" { + return false + } + // If the field name is empty when normalized or collides (var, Var, _var, _Var), + // we can't organize into a struct + field := capitalise(out.Name) + if field == "" || exists[field] { + return false + } + exists[field] = true + } + return true +} + +// hasStruct returns an indicator whether the given type is struct, struct slice +// or struct array. +func hasStruct(t abi.Type) bool { + switch t.T { + case abi.SliceTy: + return hasStruct(*t.Elem) + case abi.ArrayTy: + return hasStruct(*t.Elem) + case abi.TupleTy: + return true + default: + return false + } +} diff --git a/accounts/abi/bind/bind_test.go b/accounts/abi/bind/bind_test.go new file mode 100644 index 0000000000..168cd4860c --- /dev/null +++ b/accounts/abi/bind/bind_test.go @@ -0,0 +1,2438 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind + +import ( + "fmt" + "io/ioutil" + "os" + "os/exec" + "path/filepath" + "runtime" + "strings" + "testing" + + "github.com/ethereum/go-ethereum/common" +) + +var bindTests = []struct { + name string + contract string + bytecode []string + abi []string + imports string + tester string + fsigs []map[string]string + libs map[string]string + aliases map[string]string + types []string +}{ + // Test that the binding is available in combined and separate forms too + { + `Empty`, + `contract NilContract {}`, + []string{`606060405260068060106000396000f3606060405200`}, + []string{`[]`}, + `"github.com/ethereum/go-ethereum/common"`, + ` + if b, err := NewEmpty(common.Address{}, nil); b == nil || err != nil { + t.Fatalf("combined binding (%v) nil or error (%v) not nil", b, nil) + } + if b, err := NewEmptyCaller(common.Address{}, nil); b == nil || err != nil { + t.Fatalf("caller binding (%v) nil or error (%v) not nil", b, nil) + } + if b, err := NewEmptyTransactor(common.Address{}, nil); b == nil || err != nil { + t.Fatalf("transactor binding (%v) nil or error (%v) not nil", b, nil) + } + `, + nil, + nil, + nil, + nil, + }, + // Test that all the official sample contracts bind correctly + { + `Token`, + `https://ethereum.org/token`, + []string{`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`}, + []string{`[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"spentAllowance","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"inputs":[{"name":"initialSupply","type":"uint256"},{"name":"tokenName","type":"string"},{"name":"decimalUnits","type":"uint8"},{"name":"tokenSymbol","type":"string"}],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]`}, + `"github.com/ethereum/go-ethereum/common"`, + ` + if b, err := NewToken(common.Address{}, nil); b == nil || err != nil { + t.Fatalf("binding (%v) nil or error (%v) not nil", b, nil) + } + `, + nil, + nil, + nil, + nil, + }, + { + `Crowdsale`, + `https://ethereum.org/crowdsale`, + []string{`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`}, + []string{`[{"constant":false,"inputs":[],"name":"checkGoalReached","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"deadline","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":true,"inputs":[],"name":"beneficiary","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":true,"inputs":[],"name":"tokenReward","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":true,"inputs":[],"name":"fundingGoal","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":true,"inputs":[],"name":"amountRaised","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":true,"inputs":[],"name":"price","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"funders","outputs":[{"name":"addr","type":"address"},{"name":"amount","type":"uint256"}],"type":"function"},{"inputs":[{"name":"ifSuccessfulSendTo","type":"address"},{"name":"fundingGoalInEthers","type":"uint256"},{"name":"durationInMinutes","type":"uint256"},{"name":"etherCostOfEachToken","type":"uint256"},{"name":"addressOfTokenUsedAsReward","type":"address"}],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"backer","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"isContribution","type":"bool"}],"name":"FundTransfer","type":"event"}]`}, + `"github.com/ethereum/go-ethereum/common"`, + ` + if b, err := NewCrowdsale(common.Address{}, nil); b == nil || err != nil { + t.Fatalf("binding (%v) nil or error (%v) not nil", b, nil) + } + `, + nil, + nil, + nil, + nil, + }, + + // Test that named and anonymous inputs are handled correctly + { + `InputChecker`, ``, + []string{``}, + []string{` + [ + {"type":"function","name":"noInput","constant":true,"inputs":[],"outputs":[]}, + {"type":"function","name":"namedInput","constant":true,"inputs":[{"name":"str","type":"string"}],"outputs":[]}, + {"type":"function","name":"anonInput","constant":true,"inputs":[{"name":"","type":"string"}],"outputs":[]}, + {"type":"function","name":"namedInputs","constant":true,"inputs":[{"name":"str1","type":"string"},{"name":"str2","type":"string"}],"outputs":[]}, + {"type":"function","name":"anonInputs","constant":true,"inputs":[{"name":"","type":"string"},{"name":"","type":"string"}],"outputs":[]}, + {"type":"function","name":"mixedInputs","constant":true,"inputs":[{"name":"","type":"string"},{"name":"str","type":"string"}],"outputs":[]} + ] + `}, + ` + "fmt" + + "github.com/ethereum/go-ethereum/common" + `, + `if b, err := NewInputChecker(common.Address{}, nil); b == nil || err != nil { + t.Fatalf("binding (%v) nil or error (%v) not nil", b, nil) + } else if false { // Don't run, just compile and test types + var err error + + err = b.NoInput(nil) + err = b.NamedInput(nil, "") + err = b.AnonInput(nil, "") + err = b.NamedInputs(nil, "", "") + err = b.AnonInputs(nil, "", "") + err = b.MixedInputs(nil, "", "") + + fmt.Println(err) + }`, + nil, + nil, + nil, + nil, + }, + // Test that named and anonymous outputs are handled correctly + { + `OutputChecker`, ``, + []string{``}, + []string{` + [ + {"type":"function","name":"noOutput","constant":true,"inputs":[],"outputs":[]}, + {"type":"function","name":"namedOutput","constant":true,"inputs":[],"outputs":[{"name":"str","type":"string"}]}, + {"type":"function","name":"anonOutput","constant":true,"inputs":[],"outputs":[{"name":"","type":"string"}]}, + {"type":"function","name":"namedOutputs","constant":true,"inputs":[],"outputs":[{"name":"str1","type":"string"},{"name":"str2","type":"string"}]}, + {"type":"function","name":"collidingOutputs","constant":true,"inputs":[],"outputs":[{"name":"str","type":"string"},{"name":"Str","type":"string"}]}, + {"type":"function","name":"anonOutputs","constant":true,"inputs":[],"outputs":[{"name":"","type":"string"},{"name":"","type":"string"}]}, + {"type":"function","name":"mixedOutputs","constant":true,"inputs":[],"outputs":[{"name":"","type":"string"},{"name":"str","type":"string"}]} + ] + `}, + ` + "fmt" + + "github.com/ethereum/go-ethereum/common" + `, + `if b, err := NewOutputChecker(common.Address{}, nil); b == nil || err != nil { + t.Fatalf("binding (%v) nil or error (%v) not nil", b, nil) + } else if false { // Don't run, just compile and test types + var str1, str2 string + var err error + + err = b.NoOutput(nil) + str1, err = b.NamedOutput(nil) + str1, err = b.AnonOutput(nil) + res, _ := b.NamedOutputs(nil) + str1, str2, err = b.CollidingOutputs(nil) + str1, str2, err = b.AnonOutputs(nil) + str1, str2, err = b.MixedOutputs(nil) + + fmt.Println(str1, str2, res.Str1, res.Str2, err) + }`, + nil, + nil, + nil, + nil, + }, + // Tests that named, anonymous and indexed events are handled correctly + { + `EventChecker`, ``, + []string{``}, + []string{` + [ + {"type":"event","name":"empty","inputs":[]}, + {"type":"event","name":"indexed","inputs":[{"name":"addr","type":"address","indexed":true},{"name":"num","type":"int256","indexed":true}]}, + {"type":"event","name":"mixed","inputs":[{"name":"addr","type":"address","indexed":true},{"name":"num","type":"int256"}]}, + {"type":"event","name":"anonymous","anonymous":true,"inputs":[]}, + {"type":"event","name":"dynamic","inputs":[{"name":"idxStr","type":"string","indexed":true},{"name":"idxDat","type":"bytes","indexed":true},{"name":"str","type":"string"},{"name":"dat","type":"bytes"}]}, + {"type":"event","name":"unnamed","inputs":[{"name":"","type":"uint256","indexed": true},{"name":"","type":"uint256","indexed":true}]} + ] + `}, + ` + "fmt" + "math/big" + "reflect" + + "github.com/ethereum/go-ethereum/common" + `, + `if e, err := NewEventChecker(common.Address{}, nil); e == nil || err != nil { + t.Fatalf("binding (%v) nil or error (%v) not nil", e, nil) + } else if false { // Don't run, just compile and test types + var ( + err error + res bool + str string + dat []byte + hash common.Hash + ) + _, err = e.FilterEmpty(nil) + _, err = e.FilterIndexed(nil, []common.Address{}, []*big.Int{}) + + mit, err := e.FilterMixed(nil, []common.Address{}) + + res = mit.Next() // Make sure the iterator has a Next method + err = mit.Error() // Make sure the iterator has an Error method + err = mit.Close() // Make sure the iterator has a Close method + + fmt.Println(mit.Event.Raw.BlockHash) // Make sure the raw log is contained within the results + fmt.Println(mit.Event.Num) // Make sure the unpacked non-indexed fields are present + fmt.Println(mit.Event.Addr) // Make sure the reconstructed indexed fields are present + + dit, err := e.FilterDynamic(nil, []string{}, [][]byte{}) + + str = dit.Event.Str // Make sure non-indexed strings retain their type + dat = dit.Event.Dat // Make sure non-indexed bytes retain their type + hash = dit.Event.IdxStr // Make sure indexed strings turn into hashes + hash = dit.Event.IdxDat // Make sure indexed bytes turn into hashes + + sink := make(chan *EventCheckerMixed) + sub, err := e.WatchMixed(nil, sink, []common.Address{}) + defer sub.Unsubscribe() + + event := <-sink + fmt.Println(event.Raw.BlockHash) // Make sure the raw log is contained within the results + fmt.Println(event.Num) // Make sure the unpacked non-indexed fields are present + fmt.Println(event.Addr) // Make sure the reconstructed indexed fields are present + + fmt.Println(res, str, dat, hash, err) + + oit, err := e.FilterUnnamed(nil, []*big.Int{}, []*big.Int{}) + + arg0 := oit.Event.Arg0 // Make sure unnamed arguments are handled correctly + arg1 := oit.Event.Arg1 // Make sure unnamed arguments are handled correctly + fmt.Println(arg0, arg1) + } + // Run a tiny reflection test to ensure disallowed methods don't appear + if _, ok := reflect.TypeOf(&EventChecker{}).MethodByName("FilterAnonymous"); ok { + t.Errorf("binding has disallowed method (FilterAnonymous)") + }`, + nil, + nil, + nil, + nil, + }, + // Test that contract interactions (deploy, transact and call) generate working code + { + `Interactor`, + ` + contract Interactor { + string public deployString; + string public transactString; + + function Interactor(string str) { + deployString = str; + } + + function transact(string str) { + transactString = str; + } + } + `, + []string{`6060604052604051610328380380610328833981016040528051018060006000509080519060200190828054600181600116156101000203166002900490600052602060002090601f016020900481019282601f10608d57805160ff19168380011785555b50607c9291505b8082111560ba57838155600101606b565b50505061026a806100be6000396000f35b828001600101855582156064579182015b828111156064578251826000505591602001919060010190609e565b509056606060405260e060020a60003504630d86a0e181146100315780636874e8091461008d578063d736c513146100ea575b005b610190600180546020600282841615610100026000190190921691909104601f810182900490910260809081016040526060828152929190828280156102295780601f106101fe57610100808354040283529160200191610229565b61019060008054602060026001831615610100026000190190921691909104601f810182900490910260809081016040526060828152929190828280156102295780601f106101fe57610100808354040283529160200191610229565b60206004803580820135601f81018490049093026080908101604052606084815261002f946024939192918401918190838280828437509496505050505050508060016000509080519060200190828054600181600116156101000203166002900490600052602060002090601f016020900481019282601f1061023157805160ff19168380011785555b506102619291505b808211156102665760008155830161017d565b60405180806020018281038252838181518152602001915080519060200190808383829060006004602084601f0104600f02600301f150905090810190601f1680156101f05780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b820191906000526020600020905b81548152906001019060200180831161020c57829003601f168201915b505050505081565b82800160010185558215610175579182015b82811115610175578251826000505591602001919060010190610243565b505050565b509056`}, + []string{`[{"constant":true,"inputs":[],"name":"transactString","outputs":[{"name":"","type":"string"}],"type":"function"},{"constant":true,"inputs":[],"name":"deployString","outputs":[{"name":"","type":"string"}],"type":"function"},{"constant":false,"inputs":[{"name":"str","type":"string"}],"name":"transact","outputs":[],"type":"function"},{"inputs":[{"name":"str","type":"string"}],"type":"constructor"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy an interaction tester contract and call a transaction on it + _, _, interactor, err := DeployInteractor(auth, sim, "Deploy string") + if err != nil { + t.Fatalf("Failed to deploy interactor contract: %v", err) + } + if _, err := interactor.Transact(auth, "Transact string"); err != nil { + t.Fatalf("Failed to transact with interactor contract: %v", err) + } + // Commit all pending transactions in the simulator and check the contract state + sim.Commit(false) + + if str, err := interactor.DeployString(nil); err != nil { + t.Fatalf("Failed to retrieve deploy string: %v", err) + } else if str != "Deploy string" { + t.Fatalf("Deploy string mismatch: have '%s', want 'Deploy string'", str) + } + if str, err := interactor.TransactString(nil); err != nil { + t.Fatalf("Failed to retrieve transact string: %v", err) + } else if str != "Transact string" { + t.Fatalf("Transact string mismatch: have '%s', want 'Transact string'", str) + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that plain values can be properly returned and deserialized + { + `Getter`, + ` + contract Getter { + function getter() constant returns (string, int, bytes32) { + return ("Hi", 1, sha3("")); + } + } + `, + []string{`606060405260dc8060106000396000f3606060405260e060020a6000350463993a04b78114601a575b005b600060605260c0604052600260809081527f486900000000000000000000000000000000000000000000000000000000000060a05260017fc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a47060e0829052610100819052606060c0908152600261012081905281906101409060a09080838184600060046012f1505081517fffff000000000000000000000000000000000000000000000000000000000000169091525050604051610160819003945092505050f3`}, + []string{`[{"constant":true,"inputs":[],"name":"getter","outputs":[{"name":"","type":"string"},{"name":"","type":"int256"},{"name":"","type":"bytes32"}],"type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a tuple tester contract and execute a structured call on it + _, _, getter, err := DeployGetter(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy getter contract: %v", err) + } + sim.Commit(false) + + if str, num, _, err := getter.Getter(nil); err != nil { + t.Fatalf("Failed to call anonymous field retriever: %v", err) + } else if str != "Hi" || num.Cmp(big.NewInt(1)) != 0 { + t.Fatalf("Retrieved value mismatch: have %v/%v, want %v/%v", str, num, "Hi", 1) + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that tuples can be properly returned and deserialized + { + `Tupler`, + ` + contract Tupler { + function tuple() constant returns (string a, int b, bytes32 c) { + return ("Hi", 1, sha3("")); + } + } + `, + []string{`606060405260dc8060106000396000f3606060405260e060020a60003504633175aae28114601a575b005b600060605260c0604052600260809081527f486900000000000000000000000000000000000000000000000000000000000060a05260017fc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a47060e0829052610100819052606060c0908152600261012081905281906101409060a09080838184600060046012f1505081517fffff000000000000000000000000000000000000000000000000000000000000169091525050604051610160819003945092505050f3`}, + []string{`[{"constant":true,"inputs":[],"name":"tuple","outputs":[{"name":"a","type":"string"},{"name":"b","type":"int256"},{"name":"c","type":"bytes32"}],"type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a tuple tester contract and execute a structured call on it + _, _, tupler, err := DeployTupler(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy tupler contract: %v", err) + } + sim.Commit(false) + + if res, err := tupler.Tuple(nil); err != nil { + t.Fatalf("Failed to call structure retriever: %v", err) + } else if res.A != "Hi" || res.B.Cmp(big.NewInt(1)) != 0 { + t.Fatalf("Retrieved value mismatch: have %v/%v, want %v/%v", res.A, res.B, "Hi", 1) + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that arrays/slices can be properly returned and deserialized. + // Only addresses are tested, remainder just compiled to keep the test small. + { + `Slicer`, + ` + contract Slicer { + function echoAddresses(address[] input) constant returns (address[] output) { + return input; + } + function echoInts(int[] input) constant returns (int[] output) { + return input; + } + function echoFancyInts(uint24[23] input) constant returns (uint24[23] output) { + return input; + } + function echoBools(bool[] input) constant returns (bool[] output) { + return input; + } + } + `, + []string{`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`}, + []string{`[{"constant":true,"inputs":[{"name":"input","type":"address[]"}],"name":"echoAddresses","outputs":[{"name":"output","type":"address[]"}],"type":"function"},{"constant":true,"inputs":[{"name":"input","type":"uint24[23]"}],"name":"echoFancyInts","outputs":[{"name":"output","type":"uint24[23]"}],"type":"function"},{"constant":true,"inputs":[{"name":"input","type":"int256[]"}],"name":"echoInts","outputs":[{"name":"output","type":"int256[]"}],"type":"function"},{"constant":true,"inputs":[{"name":"input","type":"bool[]"}],"name":"echoBools","outputs":[{"name":"output","type":"bool[]"}],"type":"function"}]`}, + ` + "math/big" + "reflect" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ethereum/go-ethereum/common" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a slice tester contract and execute a n array call on it + _, _, slicer, err := DeploySlicer(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy slicer contract: %v", err) + } + sim.Commit(false) + + if out, err := slicer.EchoAddresses(nil, []common.Address{auth.From, common.Address{}}); err != nil { + t.Fatalf("Failed to call slice echoer: %v", err) + } else if !reflect.DeepEqual(out, []common.Address{auth.From, common.Address{}}) { + t.Fatalf("Slice return mismatch: have %v, want %v", out, []common.Address{auth.From, common.Address{}}) + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that anonymous default methods can be correctly invoked + { + `Defaulter`, + ` + contract Defaulter { + address public caller; + + function() { + caller = msg.sender; + } + } + `, + []string{`6060604052606a8060106000396000f360606040523615601d5760e060020a6000350463fc9c8d3981146040575b605e6000805473ffffffffffffffffffffffffffffffffffffffff191633179055565b606060005473ffffffffffffffffffffffffffffffffffffffff1681565b005b6060908152602090f3`}, + []string{`[{"constant":true,"inputs":[],"name":"caller","outputs":[{"name":"","type":"address"}],"type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a default method invoker contract and execute its default method + _, _, defaulter, err := DeployDefaulter(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy defaulter contract: %v", err) + } + if _, err := (&DefaulterRaw{defaulter}).Transfer(auth); err != nil { + t.Fatalf("Failed to invoke default method: %v", err) + } + sim.Commit(false) + + if caller, err := defaulter.Caller(nil); err != nil { + t.Fatalf("Failed to call address retriever: %v", err) + } else if (caller != auth.From) { + t.Fatalf("Address mismatch: have %v, want %v", caller, auth.From) + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that structs are correctly unpacked + { + + `Structs`, + ` + pragma solidity ^0.6.5; + pragma experimental ABIEncoderV2; + contract Structs { + struct A { + bytes32 B; + } + + function F() public view returns (A[] memory a, uint256[] memory c, bool[] memory d) { + A[] memory a = new A[](2); + a[0].B = bytes32(uint256(1234) << 96); + uint256[] memory c; + bool[] memory d; + return (a, c, d); + } + + function G() public view returns (A[] memory a) { + A[] memory a = new A[](2); + a[0].B = bytes32(uint256(1234) << 96); + return a; + } + } + `, + []string{`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`}, + []string{`[{"inputs":[],"name":"F","outputs":[{"components":[{"internalType":"bytes32","name":"B","type":"bytes32"}],"internalType":"structStructs.A[]","name":"a","type":"tuple[]"},{"internalType":"uint256[]","name":"c","type":"uint256[]"},{"internalType":"bool[]","name":"d","type":"bool[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"G","outputs":[{"components":[{"internalType":"bytes32","name":"B","type":"bytes32"}],"internalType":"structStructs.A[]","name":"a","type":"tuple[]"}],"stateMutability":"view","type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a structs method invoker contract and execute its default method + _, _, structs, err := DeployStructs(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy defaulter contract: %v", err) + } + sim.Commit(false) + opts := bind.CallOpts{} + if _, err := structs.F(&opts); err != nil { + t.Fatalf("Failed to invoke F method: %v", err) + } + if _, err := structs.G(&opts); err != nil { + t.Fatalf("Failed to invoke G method: %v", err) + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that non-existent contracts are reported as such (though only simulator test) + { + `NonExistent`, + ` + contract NonExistent { + function String() constant returns(string) { + return "I don't exist"; + } + } + `, + []string{`6060604052609f8060106000396000f3606060405260e060020a6000350463f97a60058114601a575b005b600060605260c0604052600d60809081527f4920646f6e27742065786973740000000000000000000000000000000000000060a052602060c0908152600d60e081905281906101009060a09080838184600060046012f15050815172ffffffffffffffffffffffffffffffffffffff1916909152505060405161012081900392509050f3`}, + []string{`[{"constant":true,"inputs":[],"name":"String","outputs":[{"name":"","type":"string"}],"type":"function"}]`}, + ` + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ethereum/go-ethereum/common" + "github.com/ava-labs/subnet-evm/core" + `, + ` + // Create a simulator and wrap a non-deployed contract + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{}, uint64(10000000000)) + defer sim.Close() + + nonexistent, err := NewNonExistent(common.Address{}, sim) + if err != nil { + t.Fatalf("Failed to access non-existent contract: %v", err) + } + // Ensure that contract calls fail with the appropriate error + if res, err := nonexistent.String(nil); err == nil { + t.Fatalf("Call succeeded on non-existent contract: %v", res) + } else if (err != bind.ErrNoCode) { + t.Fatalf("Error mismatch: have %v, want %v", err, bind.ErrNoCode) + } + `, + nil, + nil, + nil, + nil, + }, + { + `NonExistentStruct`, + ` + contract NonExistentStruct { + function Struct() public view returns(uint256 a, uint256 b) { + return (10, 10); + } + } + `, + []string{`6080604052348015600f57600080fd5b5060888061001e6000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c8063d5f6622514602d575b600080fd5b6033604c565b6040805192835260208301919091528051918290030190f35b600a809156fea264697066735822beefbeefbeefbeefbeefbeefbeefbeefbeefbeefbeefbeefbeefbeefbeefbeefbeef64736f6c6343decafe0033`}, + []string{`[{"inputs":[],"name":"Struct","outputs":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256","name":"b","type":"uint256"}],"stateMutability":"pure","type":"function"}]`}, + ` + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ethereum/go-ethereum/common" + "github.com/ava-labs/subnet-evm/core" + `, + ` + // Create a simulator and wrap a non-deployed contract + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{}, uint64(10000000000)) + defer sim.Close() + + nonexistent, err := NewNonExistentStruct(common.Address{}, sim) + if err != nil { + t.Fatalf("Failed to access non-existent contract: %v", err) + } + // Ensure that contract calls fail with the appropriate error + if res, err := nonexistent.Struct(nil); err == nil { + t.Fatalf("Call succeeded on non-existent contract: %v", res) + } else if (err != bind.ErrNoCode) { + t.Fatalf("Error mismatch: have %v, want %v", err, bind.ErrNoCode) + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that gas estimation works for contracts with weird gas mechanics too. + { + `FunkyGasPattern`, + ` + contract FunkyGasPattern { + string public field; + + function SetField(string value) { + // This check will screw gas estimation! Good, good! + if (msg.gas < 100000) { + throw; + } + field = value; + } + } + `, + []string{`606060405261021c806100126000396000f3606060405260e060020a600035046323fcf32a81146100265780634f28bf0e1461007b575b005b6040805160206004803580820135601f8101849004840285018401909552848452610024949193602493909291840191908190840183828082843750949650505050505050620186a05a101561014e57610002565b6100db60008054604080516020601f600260001961010060018816150201909516949094049384018190048102820181019092528281529291908301828280156102145780601f106101e957610100808354040283529160200191610214565b60405180806020018281038252838181518152602001915080519060200190808383829060006004602084601f0104600302600f01f150905090810190601f16801561013b5780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b505050565b8060006000509080519060200190828054600181600116156101000203166002900490600052602060002090601f016020900481019282601f106101b557805160ff19168380011785555b506101499291505b808211156101e557600081556001016101a1565b82800160010185558215610199579182015b828111156101995782518260005055916020019190600101906101c7565b5090565b820191906000526020600020905b8154815290600101906020018083116101f757829003601f168201915b50505050508156`}, + []string{`[{"constant":false,"inputs":[{"name":"value","type":"string"}],"name":"SetField","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"field","outputs":[{"name":"","type":"string"}],"type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a funky gas pattern contract + _, _, limiter, err := DeployFunkyGasPattern(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy funky contract: %v", err) + } + sim.Commit(false) + + // Set the field with automatic estimation and check that it succeeds + if _, err := limiter.SetField(auth, "automatic"); err != nil { + t.Fatalf("Failed to call automatically gased transaction: %v", err) + } + sim.Commit(false) + + if field, _ := limiter.Field(nil); field != "automatic" { + t.Fatalf("Field mismatch: have %v, want %v", field, "automatic") + } + `, + nil, + nil, + nil, + nil, + }, + // Test that constant functions can be called from an (optional) specified address + { + `CallFrom`, + ` + contract CallFrom { + function callFrom() constant returns(address) { + return msg.sender; + } + } + `, + []string{`6060604052346000575b6086806100176000396000f300606060405263ffffffff60e060020a60003504166349f8e98281146022575b6000565b34600057602c6055565b6040805173ffffffffffffffffffffffffffffffffffffffff9092168252519081900360200190f35b335b905600a165627a7a72305820aef6b7685c0fa24ba6027e4870404a57df701473fe4107741805c19f5138417c0029`}, + []string{`[{"constant":true,"inputs":[],"name":"callFrom","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ethereum/go-ethereum/common" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a sender tester contract and execute a structured call on it + _, _, callfrom, err := DeployCallFrom(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy sender contract: %v", err) + } + sim.Commit(false) + + if res, err := callfrom.CallFrom(nil); err != nil { + t.Errorf("Failed to call constant function: %v", err) + } else if res != (common.Address{}) { + t.Errorf("Invalid address returned, want: %x, got: %x", (common.Address{}), res) + } + + for _, addr := range []common.Address{common.Address{}, common.Address{1}, common.Address{2}} { + if res, err := callfrom.CallFrom(&bind.CallOpts{From: addr}); err != nil { + t.Fatalf("Failed to call constant function: %v", err) + } else if res != addr { + t.Fatalf("Invalid address returned, want: %x, got: %x", addr, res) + } + } + `, + nil, + nil, + nil, + nil, + }, + // Tests that methods and returns with underscores inside work correctly. + { + `Underscorer`, + ` + contract Underscorer { + function UnderscoredOutput() constant returns (int _int, string _string) { + return (314, "pi"); + } + function LowerLowerCollision() constant returns (int _res, int res) { + return (1, 2); + } + function LowerUpperCollision() constant returns (int _res, int Res) { + return (1, 2); + } + function UpperLowerCollision() constant returns (int _Res, int res) { + return (1, 2); + } + function UpperUpperCollision() constant returns (int _Res, int Res) { + return (1, 2); + } + function PurelyUnderscoredOutput() constant returns (int _, int res) { + return (1, 2); + } + function AllPurelyUnderscoredOutput() constant returns (int _, int __) { + return (1, 2); + } + function _under_scored_func() constant returns (int _int) { + return 0; + } + } + `, + []string{`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`}, + []string{`[{"constant":true,"inputs":[],"name":"LowerUpperCollision","outputs":[{"name":"_res","type":"int256"},{"name":"Res","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"_under_scored_func","outputs":[{"name":"_int","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"UnderscoredOutput","outputs":[{"name":"_int","type":"int256"},{"name":"_string","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"PurelyUnderscoredOutput","outputs":[{"name":"_","type":"int256"},{"name":"res","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"UpperLowerCollision","outputs":[{"name":"_Res","type":"int256"},{"name":"res","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"AllPurelyUnderscoredOutput","outputs":[{"name":"_","type":"int256"},{"name":"__","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"UpperUpperCollision","outputs":[{"name":"_Res","type":"int256"},{"name":"Res","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"LowerLowerCollision","outputs":[{"name":"_res","type":"int256"},{"name":"res","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"}]`}, + ` + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a underscorer tester contract and execute a structured call on it + _, _, underscorer, err := DeployUnderscorer(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy underscorer contract: %v", err) + } + sim.Commit(false) + + // Verify that underscored return values correctly parse into structs + if res, err := underscorer.UnderscoredOutput(nil); err != nil { + t.Errorf("Failed to call constant function: %v", err) + } else if res.Int.Cmp(big.NewInt(314)) != 0 || res.String != "pi" { + t.Errorf("Invalid result, want: {314, \"pi\"}, got: %+v", res) + } + // Verify that underscored and non-underscored name collisions force tuple outputs + var a, b *big.Int + + a, b, _ = underscorer.LowerLowerCollision(nil) + a, b, _ = underscorer.LowerUpperCollision(nil) + a, b, _ = underscorer.UpperLowerCollision(nil) + a, b, _ = underscorer.UpperUpperCollision(nil) + a, b, _ = underscorer.PurelyUnderscoredOutput(nil) + a, b, _ = underscorer.AllPurelyUnderscoredOutput(nil) + a, _ = underscorer.UnderScoredFunc(nil) + + fmt.Println(a, b, err) + `, + nil, + nil, + nil, + nil, + }, + // Tests that logs can be successfully filtered and decoded. + { + `Eventer`, + ` + contract Eventer { + event SimpleEvent ( + address indexed Addr, + bytes32 indexed Id, + bool indexed Flag, + uint Value + ); + function raiseSimpleEvent(address addr, bytes32 id, bool flag, uint value) { + SimpleEvent(addr, id, flag, value); + } + + event NodataEvent ( + uint indexed Number, + int16 indexed Short, + uint32 indexed Long + ); + function raiseNodataEvent(uint number, int16 short, uint32 long) { + NodataEvent(number, short, long); + } + + event DynamicEvent ( + string indexed IndexedString, + bytes indexed IndexedBytes, + string NonIndexedString, + bytes NonIndexedBytes + ); + function raiseDynamicEvent(string str, bytes blob) { + DynamicEvent(str, blob, str, blob); + } + + event FixedBytesEvent ( + bytes24 indexed IndexedBytes, + bytes24 NonIndexedBytes + ); + function raiseFixedBytesEvent(bytes24 blob) { + FixedBytesEvent(blob, blob); + } + } + `, + []string{`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`}, + []string{`[{"constant":false,"inputs":[{"name":"str","type":"string"},{"name":"blob","type":"bytes"}],"name":"raiseDynamicEvent","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"addr","type":"address"},{"name":"id","type":"bytes32"},{"name":"flag","type":"bool"},{"name":"value","type":"uint256"}],"name":"raiseSimpleEvent","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"blob","type":"bytes24"}],"name":"raiseFixedBytesEvent","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"number","type":"uint256"},{"name":"short","type":"int16"},{"name":"long","type":"uint32"}],"name":"raiseNodataEvent","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"Addr","type":"address"},{"indexed":true,"name":"Id","type":"bytes32"},{"indexed":true,"name":"Flag","type":"bool"},{"indexed":false,"name":"Value","type":"uint256"}],"name":"SimpleEvent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"Number","type":"uint256"},{"indexed":true,"name":"Short","type":"int16"},{"indexed":true,"name":"Long","type":"uint32"}],"name":"NodataEvent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"IndexedString","type":"string"},{"indexed":true,"name":"IndexedBytes","type":"bytes"},{"indexed":false,"name":"NonIndexedString","type":"string"},{"indexed":false,"name":"NonIndexedBytes","type":"bytes"}],"name":"DynamicEvent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"IndexedBytes","type":"bytes24"},{"indexed":false,"name":"NonIndexedBytes","type":"bytes24"}],"name":"FixedBytesEvent","type":"event"}]`}, + ` + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ethereum/go-ethereum/common" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy an eventer contract + _, _, eventer, err := DeployEventer(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy eventer contract: %v", err) + } + sim.Commit(false) + + // Inject a few events into the contract, gradually more in each block + for i := 1; i <= 3; i++ { + for j := 1; j <= i; j++ { + if _, err := eventer.RaiseSimpleEvent(auth, common.Address{byte(j)}, [32]byte{byte(j)}, true, big.NewInt(int64(10*i+j))); err != nil { + t.Fatalf("block %d, event %d: raise failed: %v", i, j, err) + } + } + sim.Commit(false) + } + // Test filtering for certain events and ensure they can be found + sit, err := eventer.FilterSimpleEvent(nil, []common.Address{common.Address{1}, common.Address{3}}, [][32]byte{{byte(1)}, {byte(2)}, {byte(3)}}, []bool{true}) + if err != nil { + t.Fatalf("failed to filter for simple events: %v", err) + } + defer sit.Close() + + sit.Next() + if sit.Event.Value.Uint64() != 11 || !sit.Event.Flag { + t.Errorf("simple log content mismatch: have %v, want {11, true}", sit.Event) + } + sit.Next() + if sit.Event.Value.Uint64() != 21 || !sit.Event.Flag { + t.Errorf("simple log content mismatch: have %v, want {21, true}", sit.Event) + } + sit.Next() + if sit.Event.Value.Uint64() != 31 || !sit.Event.Flag { + t.Errorf("simple log content mismatch: have %v, want {31, true}", sit.Event) + } + sit.Next() + if sit.Event.Value.Uint64() != 33 || !sit.Event.Flag { + t.Errorf("simple log content mismatch: have %v, want {33, true}", sit.Event) + } + + if sit.Next() { + t.Errorf("unexpected simple event found: %+v", sit.Event) + } + if err = sit.Error(); err != nil { + t.Fatalf("simple event iteration failed: %v", err) + } + // Test raising and filtering for an event with no data component + if _, err := eventer.RaiseNodataEvent(auth, big.NewInt(314), 141, 271); err != nil { + t.Fatalf("failed to raise nodata event: %v", err) + } + sim.Commit(false) + + nit, err := eventer.FilterNodataEvent(nil, []*big.Int{big.NewInt(314)}, []int16{140, 141, 142}, []uint32{271}) + if err != nil { + t.Fatalf("failed to filter for nodata events: %v", err) + } + defer nit.Close() + + if !nit.Next() { + t.Fatalf("nodata log not found: %v", nit.Error()) + } + if nit.Event.Number.Uint64() != 314 { + t.Errorf("nodata log content mismatch: have %v, want 314", nit.Event.Number) + } + if nit.Next() { + t.Errorf("unexpected nodata event found: %+v", nit.Event) + } + if err = nit.Error(); err != nil { + t.Fatalf("nodata event iteration failed: %v", err) + } + // Test raising and filtering for events with dynamic indexed components + if _, err := eventer.RaiseDynamicEvent(auth, "Hello", []byte("World")); err != nil { + t.Fatalf("failed to raise dynamic event: %v", err) + } + sim.Commit(false) + + dit, err := eventer.FilterDynamicEvent(nil, []string{"Hi", "Hello", "Bye"}, [][]byte{[]byte("World")}) + if err != nil { + t.Fatalf("failed to filter for dynamic events: %v", err) + } + defer dit.Close() + + if !dit.Next() { + t.Fatalf("dynamic log not found: %v", dit.Error()) + } + if dit.Event.NonIndexedString != "Hello" || string(dit.Event.NonIndexedBytes) != "World" || dit.Event.IndexedString != common.HexToHash("0x06b3dfaec148fb1bb2b066f10ec285e7c9bf402ab32aa78a5d38e34566810cd2") || dit.Event.IndexedBytes != common.HexToHash("0xf2208c967df089f60420785795c0a9ba8896b0f6f1867fa7f1f12ad6f79c1a18") { + t.Errorf("dynamic log content mismatch: have %v, want {'0x06b3dfaec148fb1bb2b066f10ec285e7c9bf402ab32aa78a5d38e34566810cd2, '0xf2208c967df089f60420785795c0a9ba8896b0f6f1867fa7f1f12ad6f79c1a18', 'Hello', 'World'}", dit.Event) + } + if dit.Next() { + t.Errorf("unexpected dynamic event found: %+v", dit.Event) + } + if err = dit.Error(); err != nil { + t.Fatalf("dynamic event iteration failed: %v", err) + } + // Test raising and filtering for events with fixed bytes components + var fblob [24]byte + copy(fblob[:], []byte("Fixed Bytes")) + + if _, err := eventer.RaiseFixedBytesEvent(auth, fblob); err != nil { + t.Fatalf("failed to raise fixed bytes event: %v", err) + } + sim.Commit(false) + + fit, err := eventer.FilterFixedBytesEvent(nil, [][24]byte{fblob}) + if err != nil { + t.Fatalf("failed to filter for fixed bytes events: %v", err) + } + defer fit.Close() + + if !fit.Next() { + t.Fatalf("fixed bytes log not found: %v", fit.Error()) + } + if fit.Event.NonIndexedBytes != fblob || fit.Event.IndexedBytes != fblob { + t.Errorf("fixed bytes log content mismatch: have %v, want {'%x', '%x'}", fit.Event, fblob, fblob) + } + if fit.Next() { + t.Errorf("unexpected fixed bytes event found: %+v", fit.Event) + } + if err = fit.Error(); err != nil { + t.Fatalf("fixed bytes event iteration failed: %v", err) + } + // Test subscribing to an event and raising it afterwards + ch := make(chan *EventerSimpleEvent, 16) + sub, err := eventer.WatchSimpleEvent(nil, ch, nil, nil, nil) + if err != nil { + t.Fatalf("failed to subscribe to simple events: %v", err) + } + if _, err := eventer.RaiseSimpleEvent(auth, common.Address{255}, [32]byte{255}, true, big.NewInt(255)); err != nil { + t.Fatalf("failed to raise subscribed simple event: %v", err) + } + sim.Commit(false) + + select { + case event := <-ch: + if event.Value.Uint64() != 255 { + t.Errorf("simple log content mismatch: have %v, want 255", event) + } + case <-time.After(250 * time.Millisecond): + t.Fatalf("subscribed simple event didn't arrive") + } + // Unsubscribe from the event and make sure we're not delivered more + sub.Unsubscribe() + + if _, err := eventer.RaiseSimpleEvent(auth, common.Address{254}, [32]byte{254}, true, big.NewInt(254)); err != nil { + t.Fatalf("failed to raise subscribed simple event: %v", err) + } + sim.Commit(false) + + select { + case event := <-ch: + t.Fatalf("unsubscribed simple event arrived: %v", event) + case <-time.After(250 * time.Millisecond): + } + `, + nil, + nil, + nil, + nil, + }, + { + `DeeplyNestedArray`, + ` + contract DeeplyNestedArray { + uint64[3][4][5] public deepUint64Array; + function storeDeepUintArray(uint64[3][4][5] arr) public { + deepUint64Array = arr; + } + function retrieveDeepArray() public view returns (uint64[3][4][5]) { + return deepUint64Array; + } + } + `, + []string{`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`}, + []string{`[{"constant":false,"inputs":[{"name":"arr","type":"uint64[3][4][5]"}],"name":"storeDeepUintArray","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"retrieveDeepArray","outputs":[{"name":"","type":"uint64[3][4][5]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"},{"name":"","type":"uint256"},{"name":"","type":"uint256"}],"name":"deepUint64Array","outputs":[{"name":"","type":"uint64"}],"payable":false,"stateMutability":"view","type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + //deploy the test contract + _, _, testContract, err := DeployDeeplyNestedArray(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy test contract: %v", err) + } + + // Finish deploy. + sim.Commit(false) + + //Create coordinate-filled array, for testing purposes. + testArr := [5][4][3]uint64{} + for i := 0; i < 5; i++ { + testArr[i] = [4][3]uint64{} + for j := 0; j < 4; j++ { + testArr[i][j] = [3]uint64{} + for k := 0; k < 3; k++ { + //pack the coordinates, each array value will be unique, and can be validated easily. + testArr[i][j][k] = uint64(i) << 16 | uint64(j) << 8 | uint64(k) + } + } + } + + if _, err := testContract.StoreDeepUintArray(&bind.TransactOpts{ + From: auth.From, + Signer: auth.Signer, + }, testArr); err != nil { + t.Fatalf("Failed to store nested array in test contract: %v", err) + } + + sim.Commit(false) + + retrievedArr, err := testContract.RetrieveDeepArray(&bind.CallOpts{ + From: auth.From, + Accepted: false, + }) + if err != nil { + t.Fatalf("Failed to retrieve nested array from test contract: %v", err) + } + + //quick check to see if contents were copied + // (See accounts/abi/unpack_test.go for more extensive testing) + if retrievedArr[4][3][2] != testArr[4][3][2] { + t.Fatalf("Retrieved value does not match expected value! got: %d, expected: %d. %v", retrievedArr[4][3][2], testArr[4][3][2], err) + } + `, + nil, + nil, + nil, + nil, + }, + { + `CallbackParam`, + ` + contract FunctionPointerTest { + function test(function(uint256) external callback) external { + callback(1); + } + } + `, + []string{`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`}, + []string{`[ + { + "constant": false, + "inputs": [ + { + "name": "callback", + "type": "function" + } + ], + "name": "test", + "outputs": [], + "payable": false, + "stateMutability": "nonpayable", + "type": "function" + } + ]`}, + ` + "strings" + `, + ` + if strings.Compare("test(function)", CallbackParamFuncSigs["d7a5aba2"]) != 0 { + t.Fatalf("") + } + `, + []map[string]string{ + { + "test(function)": "d7a5aba2", + }, + }, + nil, + nil, + nil, + }, + { + `Tuple`, + ` + pragma solidity >=0.4.19 <0.6.0; + pragma experimental ABIEncoderV2; + + contract Tuple { + struct S { uint a; uint[] b; T[] c; } + struct T { uint x; uint y; } + struct P { uint8 x; uint8 y; } + struct Q { uint16 x; uint16 y; } + event TupleEvent(S a, T[2][] b, T[][2] c, S[] d, uint[] e); + event TupleEvent2(P[]); + + function func1(S memory a, T[2][] memory b, T[][2] memory c, S[] memory d, uint[] memory e) public pure returns (S memory, T[2][] memory, T[][2] memory, S[] memory, uint[] memory) { + return (a, b, c, d, e); + } + function func2(S memory a, T[2][] memory b, T[][2] memory c, S[] memory d, uint[] memory e) public { + emit TupleEvent(a, b, c, d, e); + } + function func3(Q[] memory) public pure {} // call function, nothing to return + } + `, + 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+ []string{` +[{"anonymous":false,"inputs":[{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"indexed":false,"internalType":"struct Tuple.S","name":"a","type":"tuple"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"indexed":false,"internalType":"struct Tuple.T[2][]","name":"b","type":"tuple[2][]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"indexed":false,"internalType":"struct Tuple.T[][2]","name":"c","type":"tuple[][2]"},{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"indexed":false,"internalType":"struct Tuple.S[]","name":"d","type":"tuple[]"},{"indexed":false,"internalType":"uint256[]","name":"e","type":"uint256[]"}],"name":"TupleEvent","type":"event"},{"anonymous":false,"inputs":[{"components":[{"internalType":"uint8","name":"x","type":"uint8"},{"internalType":"uint8","name":"y","type":"uint8"}],"indexed":false,"internalType":"struct Tuple.P[]","name":"","type":"tuple[]"}],"name":"TupleEvent2","type":"event"},{"constant":true,"inputs":[{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"internalType":"struct Tuple.S","name":"a","type":"tuple"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[2][]","name":"b","type":"tuple[2][]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[][2]","name":"c","type":"tuple[][2]"},{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"internalType":"struct Tuple.S[]","name":"d","type":"tuple[]"},{"internalType":"uint256[]","name":"e","type":"uint256[]"}],"name":"func1","outputs":[{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"internalType":"struct Tuple.S","name":"","type":"tuple"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[2][]","name":"","type":"tuple[2][]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[][2]","name":"","type":"tuple[][2]"},{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"internalType":"struct Tuple.S[]","name":"","type":"tuple[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":false,"inputs":[{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"internalType":"struct Tuple.S","name":"a","type":"tuple"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[2][]","name":"b","type":"tuple[2][]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[][2]","name":"c","type":"tuple[][2]"},{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256[]","name":"b","type":"uint256[]"},{"components":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"internalType":"struct Tuple.T[]","name":"c","type":"tuple[]"}],"internalType":"struct Tuple.S[]","name":"d","type":"tuple[]"},{"internalType":"uint256[]","name":"e","type":"uint256[]"}],"name":"func2","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"components":[{"internalType":"uint16","name":"x","type":"uint16"},{"internalType":"uint16","name":"y","type":"uint16"}],"internalType":"struct Tuple.Q[]","name":"","type":"tuple[]"}],"name":"func3","outputs":[],"payable":false,"stateMutability":"pure","type":"function"}] + `}, + ` + "math/big" + "reflect" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + + ` + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + _, _, contract, err := DeployTuple(auth, sim) + if err != nil { + t.Fatalf("deploy contract failed %v", err) + } + sim.Commit(false) + + check := func(a, b interface{}, errMsg string) { + if !reflect.DeepEqual(a, b) { + t.Fatal(errMsg) + } + } + + a := TupleS{ + A: big.NewInt(1), + B: []*big.Int{big.NewInt(2), big.NewInt(3)}, + C: []TupleT{ + { + X: big.NewInt(4), + Y: big.NewInt(5), + }, + { + X: big.NewInt(6), + Y: big.NewInt(7), + }, + }, + } + + b := [][2]TupleT{ + { + { + X: big.NewInt(8), + Y: big.NewInt(9), + }, + { + X: big.NewInt(10), + Y: big.NewInt(11), + }, + }, + } + + c := [2][]TupleT{ + { + { + X: big.NewInt(12), + Y: big.NewInt(13), + }, + { + X: big.NewInt(14), + Y: big.NewInt(15), + }, + }, + { + { + X: big.NewInt(16), + Y: big.NewInt(17), + }, + }, + } + + d := []TupleS{a} + + e := []*big.Int{big.NewInt(18), big.NewInt(19)} + ret1, ret2, ret3, ret4, ret5, err := contract.Func1(nil, a, b, c, d, e) + if err != nil { + t.Fatalf("invoke contract failed, err %v", err) + } + check(ret1, a, "ret1 mismatch") + check(ret2, b, "ret2 mismatch") + check(ret3, c, "ret3 mismatch") + check(ret4, d, "ret4 mismatch") + check(ret5, e, "ret5 mismatch") + + _, err = contract.Func2(auth, a, b, c, d, e) + if err != nil { + t.Fatalf("invoke contract failed, err %v", err) + } + sim.Commit(false) + + iter, err := contract.FilterTupleEvent(nil) + if err != nil { + t.Fatalf("failed to create event filter, err %v", err) + } + defer iter.Close() + + iter.Next() + check(iter.Event.A, a, "field1 mismatch") + check(iter.Event.B, b, "field2 mismatch") + check(iter.Event.C, c, "field3 mismatch") + check(iter.Event.D, d, "field4 mismatch") + check(iter.Event.E, e, "field5 mismatch") + + err = contract.Func3(nil, nil) + if err != nil { + t.Fatalf("failed to call function which has no return, err %v", err) + } + `, + nil, + nil, + nil, + nil, + }, + { + `UseLibrary`, + ` + library Math { + function add(uint a, uint b) public view returns(uint) { + return a + b; + } + } + + contract UseLibrary { + function add (uint c, uint d) public view returns(uint) { + return Math.add(c,d); + } + } + `, + []string{ + // Bytecode for the UseLibrary contract + `608060405234801561001057600080fd5b5061011d806100206000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c8063771602f714602d575b600080fd5b604d60048036036040811015604157600080fd5b5080359060200135605f565b60408051918252519081900360200190f35b600073__$b98c933f0a6ececcd167bd4f9d3299b1a0$__63771602f784846040518363ffffffff1660e01b8152600401808381526020018281526020019250505060206040518083038186803b15801560b757600080fd5b505af415801560ca573d6000803e3d6000fd5b505050506040513d602081101560df57600080fd5b5051939250505056fea265627a7a72305820eb5c38f42445604cfa43d85e3aa5ecc48b0a646456c902dd48420ae7241d06f664736f6c63430005090032`, + // Bytecode for the Math contract + `60a3610024600b82828239805160001a607314601757fe5b30600052607381538281f3fe730000000000000000000000000000000000000000301460806040526004361060335760003560e01c8063771602f7146038575b600080fd5b605860048036036040811015604c57600080fd5b5080359060200135606a565b60408051918252519081900360200190f35b019056fea265627a7a723058206fc6c05f3078327f9c763edffdb5ab5f8bd212e293a1306c7d0ad05af3ad35f464736f6c63430005090032`, + }, + []string{ + `[{"constant":true,"inputs":[{"name":"c","type":"uint256"},{"name":"d","type":"uint256"}],"name":"add","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]`, + `[{"constant":true,"inputs":[{"name":"a","type":"uint256"},{"name":"b","type":"uint256"}],"name":"add","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]`, + }, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + //deploy the test contract + _, _, testContract, err := DeployUseLibrary(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy test contract: %v", err) + } + + // Finish deploy. + sim.Commit(false) + + // Check that the library contract has been deployed + // by calling the contract's add function. + res, err := testContract.Add(&bind.CallOpts{ + From: auth.From, + Accepted: false, + }, big.NewInt(1), big.NewInt(2)) + if err != nil { + t.Fatalf("Failed to call linked contract: %v", err) + } + if res.Cmp(big.NewInt(3)) != 0 { + t.Fatalf("Add did not return the correct result: %d != %d", res, 3) + } + `, + nil, + map[string]string{ + "b98c933f0a6ececcd167bd4f9d3299b1a0": "Math", + }, + nil, + []string{"UseLibrary", "Math"}, + }, + { + "Overload", + ` + pragma solidity ^0.5.10; + + contract overload { + mapping(address => uint256) balances; + + event bar(uint256 i); + event bar(uint256 i, uint256 j); + + function foo(uint256 i) public { + emit bar(i); + } + function foo(uint256 i, uint256 j) public { + emit bar(i, j); + } + } + `, + []string{`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`}, + []string{`[{"constant":false,"inputs":[{"name":"i","type":"uint256"},{"name":"j","type":"uint256"}],"name":"foo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"i","type":"uint256"}],"name":"foo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"i","type":"uint256"}],"name":"bar","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"i","type":"uint256"},{"indexed":false,"name":"j","type":"uint256"}],"name":"bar","type":"event"}]`}, + ` + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ava-labs/subnet-evm/params" + `, + ` + // Initialize test accounts + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + auth.GasFeeCap = params.TestMaxBaseFee + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: new(big.Int).Mul(big.NewInt(10000000000000000), big.NewInt(1000))}}, 10000000) + defer sim.Close() + + // deploy the test contract + _, _, contract, err := DeployOverload(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy contract: %v", err) + } + + resCh, stopCh := make(chan uint64), make(chan struct{}) + + go func() { + barSink := make(chan *OverloadBar) + sub, _ := contract.WatchBar(nil, barSink) + defer sub.Unsubscribe() + + bar0Sink := make(chan *OverloadBar0) + sub0, _ := contract.WatchBar0(nil, bar0Sink) + defer sub0.Unsubscribe() + + for { + select { + case ev := <-barSink: + resCh <- ev.I.Uint64() + case ev := <-bar0Sink: + resCh <- ev.I.Uint64() + ev.J.Uint64() + case <-stopCh: + return + } + } + }() + + time.Sleep(5 * time.Second) + + // Finish deploy. + sim.Commit(false) + + contract.Foo(auth, big.NewInt(1), big.NewInt(2)) + sim.Commit(false) + + time.Sleep(5 * time.Second) + + bar0Timer := time.NewTimer(60 * time.Second) + time.Sleep(1 * time.Second) + + select { + case n := <-resCh: + if n != 3 { + t.Fatalf("Invalid bar0 event") + } + case <-bar0Timer.C: + t.Fatalf("Wait bar0 event timeout") + } + + bar0Timer.Stop() + + contract.Foo0(auth, big.NewInt(1)) + sim.Commit(false) + + time.Sleep(5 * time.Second) + + barTimer := time.NewTimer(60 * time.Second) + time.Sleep(1 * time.Second) + + select { + case n := <-resCh: + if n != 1 { + t.Fatalf("Invalid bar event") + } + case <-barTimer.C: + t.Fatalf("Wait bar event timeout") + } + + barTimer.Stop() + + close(stopCh) + `, + nil, + nil, + nil, + nil, + }, + { + "IdentifierCollision", + ` + pragma solidity >=0.4.19 <0.6.0; + + contract IdentifierCollision { + uint public _myVar; + + function MyVar() public view returns (uint) { + return _myVar; + } + } + `, + []string{"60806040523480156100115760006000fd5b50610017565b60c3806100256000396000f3fe608060405234801560105760006000fd5b506004361060365760003560e01c806301ad4d8714603c5780634ef1f0ad146058576036565b60006000fd5b60426074565b6040518082815260200191505060405180910390f35b605e607d565b6040518082815260200191505060405180910390f35b60006000505481565b60006000600050549050608b565b9056fea265627a7a7231582067c8d84688b01c4754ba40a2a871cede94ea1f28b5981593ab2a45b46ac43af664736f6c634300050c0032"}, + []string{`[{"constant":true,"inputs":[],"name":"MyVar","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"_myVar","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ava-labs/subnet-evm/core" + `, + ` + // Initialize test accounts + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + + // Deploy registrar contract + sim := backends.NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: new(big.Int).Mul(big.NewInt(10000000000000000), big.NewInt(1000))}}, 10000000) + defer sim.Close() + + transactOpts, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + _, _, _, err := DeployIdentifierCollision(transactOpts, sim) + if err != nil { + t.Fatalf("failed to deploy contract: %v", err) + } + `, + nil, + nil, + map[string]string{"_myVar": "pubVar"}, // alias MyVar to PubVar + nil, + }, + { + "MultiContracts", + ` + pragma solidity ^0.5.11; + pragma experimental ABIEncoderV2; + + library ExternalLib { + struct SharedStruct{ + uint256 f1; + bytes32 f2; + } + } + + contract ContractOne { + function foo(ExternalLib.SharedStruct memory s) pure public { + // Do stuff + } + } + + contract ContractTwo { + function bar(ExternalLib.SharedStruct memory s) pure public { + // Do stuff + } + } + `, + []string{ + `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`, + `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`, + `606c6026600b82828239805160001a6073141515601857fe5b30600052607381538281f350fe73000000000000000000000000000000000000000030146080604052600436106023575b60006000fdfea365627a7a72315820518f0110144f5b3de95697d05e456a064656890d08e6f9cff47f3be710cc46a36c6578706572696d656e74616cf564736f6c634300050c0040`, + }, + []string{ + `[{"constant":true,"inputs":[{"components":[{"internalType":"uint256","name":"f1","type":"uint256"},{"internalType":"bytes32","name":"f2","type":"bytes32"}],"internalType":"struct ExternalLib.SharedStruct","name":"s","type":"tuple"}],"name":"foo","outputs":[],"payable":false,"stateMutability":"pure","type":"function"}]`, + `[{"constant":true,"inputs":[{"components":[{"internalType":"uint256","name":"f1","type":"uint256"},{"internalType":"bytes32","name":"f2","type":"bytes32"}],"internalType":"struct ExternalLib.SharedStruct","name":"s","type":"tuple"}],"name":"bar","outputs":[],"payable":false,"stateMutability":"pure","type":"function"}]`, + `[]`, + }, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ava-labs/subnet-evm/core" + `, + ` + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + + // Deploy registrar contract + sim := backends.NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + transactOpts, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + _, _, c1, err := DeployContractOne(transactOpts, sim) + if err != nil { + t.Fatal("Failed to deploy contract") + } + sim.Commit(false) + err = c1.Foo(nil, ExternalLibSharedStruct{ + F1: big.NewInt(100), + F2: [32]byte{0x01, 0x02, 0x03}, + }) + if err != nil { + t.Fatal("Failed to invoke function") + } + _, _, c2, err := DeployContractTwo(transactOpts, sim) + if err != nil { + t.Fatal("Failed to deploy contract") + } + sim.Commit(false) + err = c2.Bar(nil, ExternalLibSharedStruct{ + F1: big.NewInt(100), + F2: [32]byte{0x01, 0x02, 0x03}, + }) + if err != nil { + t.Fatal("Failed to invoke function") + } + `, + nil, + nil, + nil, + []string{"ContractOne", "ContractTwo", "ExternalLib"}, + }, + // Test the existence of the free retrieval calls + { + `PureAndView`, + `pragma solidity >=0.6.0; + contract PureAndView { + function PureFunc() public pure returns (uint) { + return 42; + } + function ViewFunc() public view returns (uint) { + return block.number; + } + } + `, + []string{`608060405234801561001057600080fd5b5060b68061001f6000396000f3fe6080604052348015600f57600080fd5b506004361060325760003560e01c806376b5686a146037578063bb38c66c146053575b600080fd5b603d606f565b6040518082815260200191505060405180910390f35b60596077565b6040518082815260200191505060405180910390f35b600043905090565b6000602a90509056fea2646970667358221220d158c2ab7fdfce366a7998ec79ab84edd43b9815630bbaede2c760ea77f29f7f64736f6c63430006000033`}, + []string{`[{"inputs": [],"name": "PureFunc","outputs": [{"internalType": "uint256","name": "","type": "uint256"}],"stateMutability": "pure","type": "function"},{"inputs": [],"name": "ViewFunc","outputs": [{"internalType": "uint256","name": "","type": "uint256"}],"stateMutability": "view","type": "function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + defer sim.Close() + + // Deploy a tester contract and execute a structured call on it + _, _, pav, err := DeployPureAndView(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy PureAndView contract: %v", err) + } + sim.Commit(false) + + // This test the existence of the free retreiver call for view and pure functions + if num, err := pav.PureFunc(nil); err != nil { + t.Fatalf("Failed to call anonymous field retriever: %v", err) + } else if num.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("Retrieved value mismatch: have %v, want %v", num, 42) + } + if num, err := pav.ViewFunc(nil); err != nil { + t.Fatalf("Failed to call anonymous field retriever: %v", err) + } else if num.Cmp(big.NewInt(1)) != 0 { + t.Fatalf("Retrieved value mismatch: have %v, want %v", num, 1) + } + `, + nil, + nil, + nil, + nil, + }, + // Test fallback separation introduced in v0.6.0 + { + `NewFallbacks`, + ` + pragma solidity >=0.6.0 <0.7.0; + + contract NewFallbacks { + event Fallback(bytes data); + fallback() external { + emit Fallback(msg.data); + } + + event Received(address addr, uint value); + receive() external payable { + emit Received(msg.sender, msg.value); + } + } + `, + []string{"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"}, + []string{`[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"Fallback","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"addr","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Received","type":"event"},{"stateMutability":"nonpayable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]`}, + ` + "bytes" + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + + sim := backends.NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(1000000000000000000)}}, 1000000) + defer sim.Close() + + opts, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + _, _, c, err := DeployNewFallbacks(opts, sim) + if err != nil { + t.Fatalf("Failed to deploy contract: %v", err) + } + sim.Commit(false) + + // Test receive function + opts.Value = big.NewInt(100) + c.Receive(opts) + sim.Commit(false) + + var gotEvent bool + iter, _ := c.FilterReceived(nil) + defer iter.Close() + for iter.Next() { + if iter.Event.Addr != addr { + t.Fatal("Msg.sender mismatch") + } + if iter.Event.Value.Uint64() != 100 { + t.Fatal("Msg.value mismatch") + } + gotEvent = true + break + } + if !gotEvent { + t.Fatal("Expect to receive event emitted by receive") + } + + // Test fallback function + gotEvent = false + opts.Value = nil + calldata := []byte{0x01, 0x02, 0x03} + c.Fallback(opts, calldata) + sim.Commit(false) + + iter2, _ := c.FilterFallback(nil) + defer iter2.Close() + for iter2.Next() { + if !bytes.Equal(iter2.Event.Data, calldata) { + t.Fatal("calldata mismatch") + } + gotEvent = true + break + } + if !gotEvent { + t.Fatal("Expect to receive event emitted by fallback") + } + `, + nil, + nil, + nil, + nil, + }, + // Test resolving single struct argument + { + `NewSingleStructArgument`, + ` + pragma solidity ^0.8.0; + + contract NewSingleStructArgument { + struct MyStruct{ + uint256 a; + uint256 b; + } + event StructEvent(MyStruct s); + function TestEvent() public { + emit StructEvent(MyStruct({a: 1, b: 2})); + } + } + `, + []string{"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"}, + []string{`[{"anonymous":false,"inputs":[{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256","name":"b","type":"uint256"}],"indexed":false,"internalType":"struct Test.MyStruct","name":"s","type":"tuple"}],"name":"StructEvent","type":"event"},{"inputs":[],"name":"TestEvent","outputs":[],"stateMutability":"nonpayable","type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + var ( + key, _ = crypto.GenerateKey() + user, _ = bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + sim = backends.NewSimulatedBackend(core.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + ) + defer sim.Close() + + _, _, d, err := DeployNewSingleStructArgument(user, sim) + if err != nil { + t.Fatalf("Failed to deploy contract %v", err) + } + sim.Commit(false) + + _, err = d.TestEvent(user) + if err != nil { + t.Fatalf("Failed to call contract %v", err) + } + sim.Commit(false) + + it, err := d.FilterStructEvent(nil) + if err != nil { + t.Fatalf("Failed to filter contract event %v", err) + } + var count int + for it.Next() { + if it.Event.S.A.Cmp(big.NewInt(1)) != 0 { + t.Fatal("Unexpected contract event") + } + if it.Event.S.B.Cmp(big.NewInt(2)) != 0 { + t.Fatal("Unexpected contract event") + } + count += 1 + } + if count != 1 { + t.Fatal("Unexpected contract event number") + } + `, + nil, + nil, + nil, + nil, + }, + // Test errors introduced in v0.8.4 + { + `NewErrors`, + ` + pragma solidity >0.8.4; + + contract NewErrors { + error MyError(uint256); + error MyError1(uint256); + error MyError2(uint256, uint256); + error MyError3(uint256 a, uint256 b, uint256 c); + function Error() public pure { + revert MyError3(1,2,3); + } + } + `, + []string{"0x6080604052348015600f57600080fd5b5060998061001e6000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c8063726c638214602d575b600080fd5b60336035565b005b60405163024876cd60e61b815260016004820152600260248201526003604482015260640160405180910390fdfea264697066735822122093f786a1bc60216540cd999fbb4a6109e0fef20abcff6e9107fb2817ca968f3c64736f6c63430008070033"}, + []string{`[{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"MyError","type":"error"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"MyError1","type":"error"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"MyError2","type":"error"},{"inputs":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"uint256","name":"b","type":"uint256"},{"internalType":"uint256","name":"c","type":"uint256"}],"name":"MyError3","type":"error"},{"inputs":[],"name":"Error","outputs":[],"stateMutability":"pure","type":"function"}]`}, + ` + "math/big" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/crypto" + `, + ` + var ( + key, _ = crypto.GenerateKey() + user, _ = bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337)) + sim = backends.NewSimulatedBackend(core.GenesisAlloc{user.From: {Balance: big.NewInt(1000000000000000000)}}, 10000000) + ) + defer sim.Close() + + _, tx, contract, err := DeployNewErrors(user, sim) + if err != nil { + t.Fatal(err) + } + sim.Commit(true) + _, err = bind.WaitDeployed(nil, sim, tx) + if err != nil { + t.Error(err) + } + if err := contract.Error(new(bind.CallOpts)); err == nil { + t.Fatalf("expected contract to throw error") + } + // TODO (MariusVanDerWijden unpack error using abigen + // once that is implemented + `, + nil, + nil, + nil, + nil, + }, +} + +// The binding tests have been modified to run in two separate test +// functions to allow these tests to pass on GitHub Actions. +func TestGolangBindingsOverload(t *testing.T) { + golangBindings(t, true) +} + +func TestGolangBindings(t *testing.T) { + golangBindings(t, false) +} + +// Tests that packages generated by the binder can be successfully compiled and +// the requested tester run against it. +func golangBindings(t *testing.T, overload bool) { + // Skip the test if no Go command can be found + gocmd := runtime.GOROOT() + "/bin/go" + if !common.FileExist(gocmd) { + t.Skip("go sdk not found for testing") + } + // Create a temporary workspace for the test suite + ws, err := ioutil.TempDir("", "binding-test") + if err != nil { + t.Fatalf("failed to create temporary workspace: %v", err) + } + // defer os.RemoveAll(ws) + + pkg := filepath.Join(ws, "bindtest") + if err = os.MkdirAll(pkg, 0700); err != nil { + t.Fatalf("failed to create package: %v", err) + } + // Generate the test suite for all the contracts + for i, tt := range bindTests { + // Skip the "Overload" test if [!overload] + if !overload && tt.name == "Overload" { + continue + } + // Skip all tests except for "Overload" if [overload] + if overload && tt.name != "Overload" { + continue + } + var types []string + if tt.types != nil { + types = tt.types + } else { + types = []string{tt.name} + } + // Generate the binding and create a Go source file in the workspace + bind, err := Bind(types, tt.abi, tt.bytecode, tt.fsigs, "bindtest", LangGo, tt.libs, tt.aliases) + if err != nil { + t.Fatalf("test %d: failed to generate binding: %v", i, err) + } + if err = ioutil.WriteFile(filepath.Join(pkg, strings.ToLower(tt.name)+".go"), []byte(bind), 0600); err != nil { + t.Fatalf("test %d: failed to write binding: %v", i, err) + } + // Generate the test file with the injected test code + code := fmt.Sprintf(` + package bindtest + + import ( + "testing" + %s + ) + + func Test%s(t *testing.T) { + %s + } + `, tt.imports, tt.name, tt.tester) + if err := ioutil.WriteFile(filepath.Join(pkg, strings.ToLower(tt.name)+"_test.go"), []byte(code), 0600); err != nil { + t.Fatalf("test %d: failed to write tests: %v", i, err) + } + } + // Convert the package to go modules and use the current source for go-ethereum + moder := exec.Command(gocmd, "mod", "init", "bindtest") + moder.Dir = pkg + if out, err := moder.CombinedOutput(); err != nil { + t.Fatalf("failed to convert binding test to modules: %v\n%s", err, out) + } + pwd, _ := os.Getwd() + replacer := exec.Command(gocmd, "mod", "edit", "-x", "-require", "github.com/ava-labs/subnet-evm@v0.0.0", "-replace", "github.com/ava-labs/subnet-evm="+filepath.Join(pwd, "..", "..", "..")) // Repo root + replacer.Dir = pkg + if out, err := replacer.CombinedOutput(); err != nil { + t.Fatalf("failed to replace binding test dependency to current source tree: %v\n%s", err, out) + } + tidier := exec.Command(gocmd, "mod", "tidy") + tidier.Dir = pkg + if out, err := tidier.CombinedOutput(); err != nil { + t.Fatalf("failed to tidy Go module file: %v\n%s", err, out) + } + // Test the entire package and report any failures + cmd := exec.Command(gocmd, "test", "-v", "-count", "1") + cmd.Dir = pkg + if out, err := cmd.CombinedOutput(); err != nil { + t.Fatalf("failed to run binding test: %v\n%s", err, out) + } +} + +// Tests that java binding generated by the binder is exactly matched. +func TestJavaBindings(t *testing.T) { + cases := []struct { + name string + contract string + abi string + bytecode string + expected string + }{ + { + "test", + ` + pragma experimental ABIEncoderV2; + pragma solidity ^0.5.2; + + contract test { + function setAddress(address a) public returns(address){} + function setAddressList(address[] memory a_l) public returns(address[] memory){} + function setAddressArray(address[2] memory a_a) public returns(address[2] memory){} + + function setUint8(uint8 u8) public returns(uint8){} + function setUint16(uint16 u16) public returns(uint16){} + function setUint32(uint32 u32) public returns(uint32){} + function setUint64(uint64 u64) public returns(uint64){} + function setUint256(uint256 u256) public returns(uint256){} + function setUint256List(uint256[] memory u256_l) public returns(uint256[] memory){} + function setUint256Array(uint256[2] memory u256_a) public returns(uint256[2] memory){} + + function setInt8(int8 i8) public returns(int8){} + function setInt16(int16 i16) public returns(int16){} + function setInt32(int32 i32) public returns(int32){} + function setInt64(int64 i64) public returns(int64){} + function setInt256(int256 i256) public returns(int256){} + function setInt256List(int256[] memory i256_l) public returns(int256[] memory){} + function setInt256Array(int256[2] memory i256_a) public returns(int256[2] memory){} + + function setBytes1(bytes1 b1) public returns(bytes1) {} + function setBytes32(bytes32 b32) public returns(bytes32) {} + function setBytes(bytes memory bs) public returns(bytes memory) {} + function setBytesList(bytes[] memory bs_l) public returns(bytes[] memory) {} + function setBytesArray(bytes[2] memory bs_a) public returns(bytes[2] memory) {} + + function setString(string memory s) public returns(string memory) {} + function setStringList(string[] memory s_l) public returns(string[] memory) {} + function setStringArray(string[2] memory s_a) public returns(string[2] memory) {} + + function setBool(bool b) public returns(bool) {} + function setBoolList(bool[] memory b_l) public returns(bool[] memory) {} + function setBoolArray(bool[2] memory b_a) public returns(bool[2] memory) {} + }`, + 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+ ` +// This file is an automatically generated Java binding. Do not modify as any +// change will likely be lost upon the next re-generation! + +package bindtest; + +import org.ethereum.geth.*; +import java.util.*; + +public class Test { + // ABI is the input ABI used to generate the binding from. + public final static String ABI = "[{\"constant\":false,\"inputs\":[{\"name\":\"u16\",\"type\":\"uint16\"}],\"name\":\"setUint16\",\"outputs\":[{\"name\":\"\",\"type\":\"uint16\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"b_a\",\"type\":\"bool[2]\"}],\"name\":\"setBoolArray\",\"outputs\":[{\"name\":\"\",\"type\":\"bool[2]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"a_a\",\"type\":\"address[2]\"}],\"name\":\"setAddressArray\",\"outputs\":[{\"name\":\"\",\"type\":\"address[2]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"bs_l\",\"type\":\"bytes[]\"}],\"name\":\"setBytesList\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes[]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"u8\",\"type\":\"uint8\"}],\"name\":\"setUint8\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"u32\",\"type\":\"uint32\"}],\"name\":\"setUint32\",\"outputs\":[{\"name\":\"\",\"type\":\"uint32\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"b\",\"type\":\"bool\"}],\"name\":\"setBool\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"i256_l\",\"type\":\"int256[]\"}],\"name\":\"setInt256List\",\"outputs\":[{\"name\":\"\",\"type\":\"int256[]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"u256_a\",\"type\":\"uint256[2]\"}],\"name\":\"setUint256Array\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256[2]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"b_l\",\"type\":\"bool[]\"}],\"name\":\"setBoolList\",\"outputs\":[{\"name\":\"\",\"type\":\"bool[]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"bs_a\",\"type\":\"bytes[2]\"}],\"name\":\"setBytesArray\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes[2]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"a_l\",\"type\":\"address[]\"}],\"name\":\"setAddressList\",\"outputs\":[{\"name\":\"\",\"type\":\"address[]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"i256_a\",\"type\":\"int256[2]\"}],\"name\":\"setInt256Array\",\"outputs\":[{\"name\":\"\",\"type\":\"int256[2]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"s_a\",\"type\":\"string[2]\"}],\"name\":\"setStringArray\",\"outputs\":[{\"name\":\"\",\"type\":\"string[2]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"s\",\"type\":\"string\"}],\"name\":\"setString\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"u64\",\"type\":\"uint64\"}],\"name\":\"setUint64\",\"outputs\":[{\"name\":\"\",\"type\":\"uint64\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"i16\",\"type\":\"int16\"}],\"name\":\"setInt16\",\"outputs\":[{\"name\":\"\",\"type\":\"int16\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"i8\",\"type\":\"int8\"}],\"name\":\"setInt8\",\"outputs\":[{\"name\":\"\",\"type\":\"int8\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"u256_l\",\"type\":\"uint256[]\"}],\"name\":\"setUint256List\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256[]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"i256\",\"type\":\"int256\"}],\"name\":\"setInt256\",\"outputs\":[{\"name\":\"\",\"type\":\"int256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"i32\",\"type\":\"int32\"}],\"name\":\"setInt32\",\"outputs\":[{\"name\":\"\",\"type\":\"int32\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"b32\",\"type\":\"bytes32\"}],\"name\":\"setBytes32\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"s_l\",\"type\":\"string[]\"}],\"name\":\"setStringList\",\"outputs\":[{\"name\":\"\",\"type\":\"string[]\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"u256\",\"type\":\"uint256\"}],\"name\":\"setUint256\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"bs\",\"type\":\"bytes\"}],\"name\":\"setBytes\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"a\",\"type\":\"address\"}],\"name\":\"setAddress\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"i64\",\"type\":\"int64\"}],\"name\":\"setInt64\",\"outputs\":[{\"name\":\"\",\"type\":\"int64\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"b1\",\"type\":\"bytes1\"}],\"name\":\"setBytes1\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes1\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]"; + + // BYTECODE is the compiled bytecode used for deploying new contracts. + public final static String BYTECODE = 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+ + // deploy deploys a new Ethereum contract, binding an instance of Test to it. + public static Test deploy(TransactOpts auth, EthereumClient client) throws Exception { + Interfaces args = Geth.newInterfaces(0); + String bytecode = BYTECODE; + return new Test(Geth.deployContract(auth, ABI, Geth.decodeFromHex(bytecode), client, args)); + } + + // Internal constructor used by contract deployment. + private Test(BoundContract deployment) { + this.Address = deployment.getAddress(); + this.Deployer = deployment.getDeployer(); + this.Contract = deployment; + } + + // Ethereum address where this contract is located at. + public final Address Address; + + // Ethereum transaction in which this contract was deployed (if known!). + public final Transaction Deployer; + + // Contract instance bound to a blockchain address. + private final BoundContract Contract; + + // Creates a new instance of Test, bound to a specific deployed contract. + public Test(Address address, EthereumClient client) throws Exception { + this(Geth.bindContract(address, ABI, client)); + } + + // setAddress is a paid mutator transaction binding the contract method 0xe30081a0. + // + // Solidity: function setAddress(address a) returns(address) + public Transaction setAddress(TransactOpts opts, Address a) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setAddress(a);args.set(0,arg0); + + return this.Contract.transact(opts, "setAddress" , args); + } + + // setAddressArray is a paid mutator transaction binding the contract method 0x151f5471. + // + // Solidity: function setAddressArray(address[2] a_a) returns(address[2]) + public Transaction setAddressArray(TransactOpts opts, Addresses a_a) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setAddresses(a_a);args.set(0,arg0); + + return this.Contract.transact(opts, "setAddressArray" , args); + } + + // setAddressList is a paid mutator transaction binding the contract method 0x5be6b37e. + // + // Solidity: function setAddressList(address[] a_l) returns(address[]) + public Transaction setAddressList(TransactOpts opts, Addresses a_l) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setAddresses(a_l);args.set(0,arg0); + + return this.Contract.transact(opts, "setAddressList" , args); + } + + // setBool is a paid mutator transaction binding the contract method 0x1e26fd33. + // + // Solidity: function setBool(bool b) returns(bool) + public Transaction setBool(TransactOpts opts, boolean b) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBool(b);args.set(0,arg0); + + return this.Contract.transact(opts, "setBool" , args); + } + + // setBoolArray is a paid mutator transaction binding the contract method 0x118a9718. + // + // Solidity: function setBoolArray(bool[2] b_a) returns(bool[2]) + public Transaction setBoolArray(TransactOpts opts, Bools b_a) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBools(b_a);args.set(0,arg0); + + return this.Contract.transact(opts, "setBoolArray" , args); + } + + // setBoolList is a paid mutator transaction binding the contract method 0x4d5ee6da. + // + // Solidity: function setBoolList(bool[] b_l) returns(bool[]) + public Transaction setBoolList(TransactOpts opts, Bools b_l) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBools(b_l);args.set(0,arg0); + + return this.Contract.transact(opts, "setBoolList" , args); + } + + // setBytes is a paid mutator transaction binding the contract method 0xda359dc8. + // + // Solidity: function setBytes(bytes bs) returns(bytes) + public Transaction setBytes(TransactOpts opts, byte[] bs) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBinary(bs);args.set(0,arg0); + + return this.Contract.transact(opts, "setBytes" , args); + } + + // setBytes1 is a paid mutator transaction binding the contract method 0xfba1a1c3. + // + // Solidity: function setBytes1(bytes1 b1) returns(bytes1) + public Transaction setBytes1(TransactOpts opts, byte[] b1) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBinary(b1);args.set(0,arg0); + + return this.Contract.transact(opts, "setBytes1" , args); + } + + // setBytes32 is a paid mutator transaction binding the contract method 0xc2b12a73. + // + // Solidity: function setBytes32(bytes32 b32) returns(bytes32) + public Transaction setBytes32(TransactOpts opts, byte[] b32) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBinary(b32);args.set(0,arg0); + + return this.Contract.transact(opts, "setBytes32" , args); + } + + // setBytesArray is a paid mutator transaction binding the contract method 0x5119655d. + // + // Solidity: function setBytesArray(bytes[2] bs_a) returns(bytes[2]) + public Transaction setBytesArray(TransactOpts opts, Binaries bs_a) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBinaries(bs_a);args.set(0,arg0); + + return this.Contract.transact(opts, "setBytesArray" , args); + } + + // setBytesList is a paid mutator transaction binding the contract method 0x16c105e2. + // + // Solidity: function setBytesList(bytes[] bs_l) returns(bytes[]) + public Transaction setBytesList(TransactOpts opts, Binaries bs_l) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBinaries(bs_l);args.set(0,arg0); + + return this.Contract.transact(opts, "setBytesList" , args); + } + + // setInt16 is a paid mutator transaction binding the contract method 0x86114cea. + // + // Solidity: function setInt16(int16 i16) returns(int16) + public Transaction setInt16(TransactOpts opts, short i16) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setInt16(i16);args.set(0,arg0); + + return this.Contract.transact(opts, "setInt16" , args); + } + + // setInt256 is a paid mutator transaction binding the contract method 0xa53b1c1e. + // + // Solidity: function setInt256(int256 i256) returns(int256) + public Transaction setInt256(TransactOpts opts, BigInt i256) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBigInt(i256);args.set(0,arg0); + + return this.Contract.transact(opts, "setInt256" , args); + } + + // setInt256Array is a paid mutator transaction binding the contract method 0x6aa482fc. + // + // Solidity: function setInt256Array(int256[2] i256_a) returns(int256[2]) + public Transaction setInt256Array(TransactOpts opts, BigInts i256_a) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBigInts(i256_a);args.set(0,arg0); + + return this.Contract.transact(opts, "setInt256Array" , args); + } + + // setInt256List is a paid mutator transaction binding the contract method 0x22722302. + // + // Solidity: function setInt256List(int256[] i256_l) returns(int256[]) + public Transaction setInt256List(TransactOpts opts, BigInts i256_l) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBigInts(i256_l);args.set(0,arg0); + + return this.Contract.transact(opts, "setInt256List" , args); + } + + // setInt32 is a paid mutator transaction binding the contract method 0xb7d5df31. + // + // Solidity: function setInt32(int32 i32) returns(int32) + public Transaction setInt32(TransactOpts opts, int i32) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setInt32(i32);args.set(0,arg0); + + return this.Contract.transact(opts, "setInt32" , args); + } + + // setInt64 is a paid mutator transaction binding the contract method 0xe673eb32. + // + // Solidity: function setInt64(int64 i64) returns(int64) + public Transaction setInt64(TransactOpts opts, long i64) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setInt64(i64);args.set(0,arg0); + + return this.Contract.transact(opts, "setInt64" , args); + } + + // setInt8 is a paid mutator transaction binding the contract method 0x9a19a953. + // + // Solidity: function setInt8(int8 i8) returns(int8) + public Transaction setInt8(TransactOpts opts, byte i8) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setInt8(i8);args.set(0,arg0); + + return this.Contract.transact(opts, "setInt8" , args); + } + + // setString is a paid mutator transaction binding the contract method 0x7fcaf666. + // + // Solidity: function setString(string s) returns(string) + public Transaction setString(TransactOpts opts, String s) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setString(s);args.set(0,arg0); + + return this.Contract.transact(opts, "setString" , args); + } + + // setStringArray is a paid mutator transaction binding the contract method 0x7173b695. + // + // Solidity: function setStringArray(string[2] s_a) returns(string[2]) + public Transaction setStringArray(TransactOpts opts, Strings s_a) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setStrings(s_a);args.set(0,arg0); + + return this.Contract.transact(opts, "setStringArray" , args); + } + + // setStringList is a paid mutator transaction binding the contract method 0xc5777961. + // + // Solidity: function setStringList(string[] s_l) returns(string[]) + public Transaction setStringList(TransactOpts opts, Strings s_l) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setStrings(s_l);args.set(0,arg0); + + return this.Contract.transact(opts, "setStringList" , args); + } + + // setUint16 is a paid mutator transaction binding the contract method 0x0477988a. + // + // Solidity: function setUint16(uint16 u16) returns(uint16) + public Transaction setUint16(TransactOpts opts, BigInt u16) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setUint16(u16);args.set(0,arg0); + + return this.Contract.transact(opts, "setUint16" , args); + } + + // setUint256 is a paid mutator transaction binding the contract method 0xd2282dc5. + // + // Solidity: function setUint256(uint256 u256) returns(uint256) + public Transaction setUint256(TransactOpts opts, BigInt u256) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBigInt(u256);args.set(0,arg0); + + return this.Contract.transact(opts, "setUint256" , args); + } + + // setUint256Array is a paid mutator transaction binding the contract method 0x2766a755. + // + // Solidity: function setUint256Array(uint256[2] u256_a) returns(uint256[2]) + public Transaction setUint256Array(TransactOpts opts, BigInts u256_a) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBigInts(u256_a);args.set(0,arg0); + + return this.Contract.transact(opts, "setUint256Array" , args); + } + + // setUint256List is a paid mutator transaction binding the contract method 0xa0709e19. + // + // Solidity: function setUint256List(uint256[] u256_l) returns(uint256[]) + public Transaction setUint256List(TransactOpts opts, BigInts u256_l) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setBigInts(u256_l);args.set(0,arg0); + + return this.Contract.transact(opts, "setUint256List" , args); + } + + // setUint32 is a paid mutator transaction binding the contract method 0x1c9352e2. + // + // Solidity: function setUint32(uint32 u32) returns(uint32) + public Transaction setUint32(TransactOpts opts, BigInt u32) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setUint32(u32);args.set(0,arg0); + + return this.Contract.transact(opts, "setUint32" , args); + } + + // setUint64 is a paid mutator transaction binding the contract method 0x822cba69. + // + // Solidity: function setUint64(uint64 u64) returns(uint64) + public Transaction setUint64(TransactOpts opts, BigInt u64) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setUint64(u64);args.set(0,arg0); + + return this.Contract.transact(opts, "setUint64" , args); + } + + // setUint8 is a paid mutator transaction binding the contract method 0x1774e646. + // + // Solidity: function setUint8(uint8 u8) returns(uint8) + public Transaction setUint8(TransactOpts opts, BigInt u8) throws Exception { + Interfaces args = Geth.newInterfaces(1); + Interface arg0 = Geth.newInterface();arg0.setUint8(u8);args.set(0,arg0); + + return this.Contract.transact(opts, "setUint8" , args); + } +} +`, + }, + } + for i, c := range cases { + binding, err := Bind([]string{c.name}, []string{c.abi}, []string{c.bytecode}, nil, "bindtest", LangJava, nil, nil) + if err != nil { + t.Fatalf("test %d: failed to generate binding: %v", i, err) + } + // Remove empty lines + removeEmptys := func(input string) string { + lines := strings.Split(input, "\n") + var index int + for _, line := range lines { + if strings.TrimSpace(line) != "" { + lines[index] = line + index += 1 + } + } + lines = lines[:index] + return strings.Join(lines, "\n") + } + binding = removeEmptys(binding) + expect := removeEmptys(c.expected) + if binding != expect { + t.Fatalf("test %d: generated binding mismatch, has %s, want %s", i, binding, c.expected) + } + } +} diff --git a/accounts/abi/bind/template.go b/accounts/abi/bind/template.go new file mode 100644 index 0000000000..6409745931 --- /dev/null +++ b/accounts/abi/bind/template.go @@ -0,0 +1,718 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind + +import "github.com/ava-labs/subnet-evm/accounts/abi" + +// tmplData is the data structure required to fill the binding template. +type tmplData struct { + Package string // Name of the package to place the generated file in + Contracts map[string]*tmplContract // List of contracts to generate into this file + Libraries map[string]string // Map the bytecode's link pattern to the library name + Structs map[string]*tmplStruct // Contract struct type definitions +} + +// tmplContract contains the data needed to generate an individual contract binding. +type tmplContract struct { + Type string // Type name of the main contract binding + InputABI string // JSON ABI used as the input to generate the binding from + InputBin string // Optional EVM bytecode used to generate deploy code from + FuncSigs map[string]string // Optional map: string signature -> 4-byte signature + Constructor abi.Method // Contract constructor for deploy parametrization + Calls map[string]*tmplMethod // Contract calls that only read state data + Transacts map[string]*tmplMethod // Contract calls that write state data + Fallback *tmplMethod // Additional special fallback function + Receive *tmplMethod // Additional special receive function + Events map[string]*tmplEvent // Contract events accessors + Libraries map[string]string // Same as tmplData, but filtered to only keep what the contract needs + Library bool // Indicator whether the contract is a library +} + +// tmplMethod is a wrapper around an abi.Method that contains a few preprocessed +// and cached data fields. +type tmplMethod struct { + Original abi.Method // Original method as parsed by the abi package + Normalized abi.Method // Normalized version of the parsed method (capitalized names, non-anonymous args/returns) + Structured bool // Whether the returns should be accumulated into a struct +} + +// tmplEvent is a wrapper around an abi.Event that contains a few preprocessed +// and cached data fields. +type tmplEvent struct { + Original abi.Event // Original event as parsed by the abi package + Normalized abi.Event // Normalized version of the parsed fields +} + +// tmplField is a wrapper around a struct field with binding language +// struct type definition and relative filed name. +type tmplField struct { + Type string // Field type representation depends on target binding language + Name string // Field name converted from the raw user-defined field name + SolKind abi.Type // Raw abi type information +} + +// tmplStruct is a wrapper around an abi.tuple and contains an auto-generated +// struct name. +type tmplStruct struct { + Name string // Auto-generated struct name(before solidity v0.5.11) or raw name. + Fields []*tmplField // Struct fields definition depends on the binding language. +} + +// tmplSource is language to template mapping containing all the supported +// programming languages the package can generate to. +var tmplSource = map[Lang]string{ + LangGo: tmplSourceGo, + LangJava: tmplSourceJava, +} + +// tmplSourceGo is the Go source template that the generated Go contract binding +// is based on. +const tmplSourceGo = ` +// Code generated - DO NOT EDIT. +// This file is a generated binding and any manual changes will be lost. + +package {{.Package}} + +import ( + "math/big" + "strings" + "errors" + + "github.com/ava-labs/subnet-evm/accounts/abi" + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" +) + +// Reference imports to suppress errors if they are not otherwise used. +var ( + _ = errors.New + _ = big.NewInt + _ = strings.NewReader + _ = interfaces.NotFound + _ = bind.Bind + _ = common.Big1 + _ = types.BloomLookup + _ = event.NewSubscription +) + +{{$structs := .Structs}} +{{range $structs}} + // {{.Name}} is an auto generated low-level Go binding around an user-defined struct. + type {{.Name}} struct { + {{range $field := .Fields}} + {{$field.Name}} {{$field.Type}}{{end}} + } +{{end}} + +{{range $contract := .Contracts}} + // {{.Type}}MetaData contains all meta data concerning the {{.Type}} contract. + var {{.Type}}MetaData = &bind.MetaData{ + ABI: "{{.InputABI}}", + {{if $contract.FuncSigs -}} + Sigs: map[string]string{ + {{range $strsig, $binsig := .FuncSigs}}"{{$binsig}}": "{{$strsig}}", + {{end}} + }, + {{end -}} + {{if .InputBin -}} + Bin: "0x{{.InputBin}}", + {{end}} + } + // {{.Type}}ABI is the input ABI used to generate the binding from. + // Deprecated: Use {{.Type}}MetaData.ABI instead. + var {{.Type}}ABI = {{.Type}}MetaData.ABI + + {{if $contract.FuncSigs}} + // Deprecated: Use {{.Type}}MetaData.Sigs instead. + // {{.Type}}FuncSigs maps the 4-byte function signature to its string representation. + var {{.Type}}FuncSigs = {{.Type}}MetaData.Sigs + {{end}} + + {{if .InputBin}} + // {{.Type}}Bin is the compiled bytecode used for deploying new contracts. + // Deprecated: Use {{.Type}}MetaData.Bin instead. + var {{.Type}}Bin = {{.Type}}MetaData.Bin + + // Deploy{{.Type}} deploys a new Ethereum contract, binding an instance of {{.Type}} to it. + func Deploy{{.Type}}(auth *bind.TransactOpts, backend bind.ContractBackend {{range .Constructor.Inputs}}, {{.Name}} {{bindtype .Type $structs}}{{end}}) (common.Address, *types.Transaction, *{{.Type}}, error) { + parsed, err := {{.Type}}MetaData.GetAbi() + if err != nil { + return common.Address{}, nil, nil, err + } + if parsed == nil { + return common.Address{}, nil, nil, errors.New("GetABI returned nil") + } + {{range $pattern, $name := .Libraries}} + {{decapitalise $name}}Addr, _, _, _ := Deploy{{capitalise $name}}(auth, backend) + {{$contract.Type}}Bin = strings.Replace({{$contract.Type}}Bin, "__${{$pattern}}$__", {{decapitalise $name}}Addr.String()[2:], -1) + {{end}} + address, tx, contract, err := bind.DeployContract(auth, *parsed, common.FromHex({{.Type}}Bin), backend {{range .Constructor.Inputs}}, {{.Name}}{{end}}) + if err != nil { + return common.Address{}, nil, nil, err + } + return address, tx, &{{.Type}}{ {{.Type}}Caller: {{.Type}}Caller{contract: contract}, {{.Type}}Transactor: {{.Type}}Transactor{contract: contract}, {{.Type}}Filterer: {{.Type}}Filterer{contract: contract} }, nil + } + {{end}} + + // {{.Type}} is an auto generated Go binding around an Ethereum contract. + type {{.Type}} struct { + {{.Type}}Caller // Read-only binding to the contract + {{.Type}}Transactor // Write-only binding to the contract + {{.Type}}Filterer // Log filterer for contract events + } + + // {{.Type}}Caller is an auto generated read-only Go binding around an Ethereum contract. + type {{.Type}}Caller struct { + contract *bind.BoundContract // Generic contract wrapper for the low level calls + } + + // {{.Type}}Transactor is an auto generated write-only Go binding around an Ethereum contract. + type {{.Type}}Transactor struct { + contract *bind.BoundContract // Generic contract wrapper for the low level calls + } + + // {{.Type}}Filterer is an auto generated log filtering Go binding around an Ethereum contract events. + type {{.Type}}Filterer struct { + contract *bind.BoundContract // Generic contract wrapper for the low level calls + } + + // {{.Type}}Session is an auto generated Go binding around an Ethereum contract, + // with pre-set call and transact options. + type {{.Type}}Session struct { + Contract *{{.Type}} // Generic contract binding to set the session for + CallOpts bind.CallOpts // Call options to use throughout this session + TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session + } + + // {{.Type}}CallerSession is an auto generated read-only Go binding around an Ethereum contract, + // with pre-set call options. + type {{.Type}}CallerSession struct { + Contract *{{.Type}}Caller // Generic contract caller binding to set the session for + CallOpts bind.CallOpts // Call options to use throughout this session + } + + // {{.Type}}TransactorSession is an auto generated write-only Go binding around an Ethereum contract, + // with pre-set transact options. + type {{.Type}}TransactorSession struct { + Contract *{{.Type}}Transactor // Generic contract transactor binding to set the session for + TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session + } + + // {{.Type}}Raw is an auto generated low-level Go binding around an Ethereum contract. + type {{.Type}}Raw struct { + Contract *{{.Type}} // Generic contract binding to access the raw methods on + } + + // {{.Type}}CallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract. + type {{.Type}}CallerRaw struct { + Contract *{{.Type}}Caller // Generic read-only contract binding to access the raw methods on + } + + // {{.Type}}TransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract. + type {{.Type}}TransactorRaw struct { + Contract *{{.Type}}Transactor // Generic write-only contract binding to access the raw methods on + } + + // New{{.Type}} creates a new instance of {{.Type}}, bound to a specific deployed contract. + func New{{.Type}}(address common.Address, backend bind.ContractBackend) (*{{.Type}}, error) { + contract, err := bind{{.Type}}(address, backend, backend, backend) + if err != nil { + return nil, err + } + return &{{.Type}}{ {{.Type}}Caller: {{.Type}}Caller{contract: contract}, {{.Type}}Transactor: {{.Type}}Transactor{contract: contract}, {{.Type}}Filterer: {{.Type}}Filterer{contract: contract} }, nil + } + + // New{{.Type}}Caller creates a new read-only instance of {{.Type}}, bound to a specific deployed contract. + func New{{.Type}}Caller(address common.Address, caller bind.ContractCaller) (*{{.Type}}Caller, error) { + contract, err := bind{{.Type}}(address, caller, nil, nil) + if err != nil { + return nil, err + } + return &{{.Type}}Caller{contract: contract}, nil + } + + // New{{.Type}}Transactor creates a new write-only instance of {{.Type}}, bound to a specific deployed contract. + func New{{.Type}}Transactor(address common.Address, transactor bind.ContractTransactor) (*{{.Type}}Transactor, error) { + contract, err := bind{{.Type}}(address, nil, transactor, nil) + if err != nil { + return nil, err + } + return &{{.Type}}Transactor{contract: contract}, nil + } + + // New{{.Type}}Filterer creates a new log filterer instance of {{.Type}}, bound to a specific deployed contract. + func New{{.Type}}Filterer(address common.Address, filterer bind.ContractFilterer) (*{{.Type}}Filterer, error) { + contract, err := bind{{.Type}}(address, nil, nil, filterer) + if err != nil { + return nil, err + } + return &{{.Type}}Filterer{contract: contract}, nil + } + + // bind{{.Type}} binds a generic wrapper to an already deployed contract. + func bind{{.Type}}(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) { + parsed, err := abi.JSON(strings.NewReader({{.Type}}ABI)) + if err != nil { + return nil, err + } + return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil + } + + // Call invokes the (constant) contract method with params as input values and + // sets the output to result. The result type might be a single field for simple + // returns, a slice of interfaces for anonymous returns and a struct for named + // returns. + func (_{{$contract.Type}} *{{$contract.Type}}Raw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error { + return _{{$contract.Type}}.Contract.{{$contract.Type}}Caller.contract.Call(opts, result, method, params...) + } + + // Transfer initiates a plain transaction to move funds to the contract, calling + // its default method if one is available. + func (_{{$contract.Type}} *{{$contract.Type}}Raw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.{{$contract.Type}}Transactor.contract.Transfer(opts) + } + + // Transact invokes the (paid) contract method with params as input values. + func (_{{$contract.Type}} *{{$contract.Type}}Raw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.{{$contract.Type}}Transactor.contract.Transact(opts, method, params...) + } + + // Call invokes the (constant) contract method with params as input values and + // sets the output to result. The result type might be a single field for simple + // returns, a slice of interfaces for anonymous returns and a struct for named + // returns. + func (_{{$contract.Type}} *{{$contract.Type}}CallerRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error { + return _{{$contract.Type}}.Contract.contract.Call(opts, result, method, params...) + } + + // Transfer initiates a plain transaction to move funds to the contract, calling + // its default method if one is available. + func (_{{$contract.Type}} *{{$contract.Type}}TransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.contract.Transfer(opts) + } + + // Transact invokes the (paid) contract method with params as input values. + func (_{{$contract.Type}} *{{$contract.Type}}TransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.contract.Transact(opts, method, params...) + } + + {{range .Calls}} + // {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Caller) {{.Normalized.Name}}(opts *bind.CallOpts {{range .Normalized.Inputs}}, {{.Name}} {{bindtype .Type $structs}} {{end}}) ({{if .Structured}}struct{ {{range .Normalized.Outputs}}{{.Name}} {{bindtype .Type $structs}};{{end}} },{{else}}{{range .Normalized.Outputs}}{{bindtype .Type $structs}},{{end}}{{end}} error) { + var out []interface{} + err := _{{$contract.Type}}.contract.Call(opts, &out, "{{.Original.Name}}" {{range .Normalized.Inputs}}, {{.Name}}{{end}}) + {{if .Structured}} + outstruct := new(struct{ {{range .Normalized.Outputs}} {{.Name}} {{bindtype .Type $structs}}; {{end}} }) + if err != nil { + return *outstruct, err + } + {{range $i, $t := .Normalized.Outputs}} + outstruct.{{.Name}} = *abi.ConvertType(out[{{$i}}], new({{bindtype .Type $structs}})).(*{{bindtype .Type $structs}}){{end}} + + return *outstruct, err + {{else}} + if err != nil { + return {{range $i, $_ := .Normalized.Outputs}}*new({{bindtype .Type $structs}}), {{end}} err + } + {{range $i, $t := .Normalized.Outputs}} + out{{$i}} := *abi.ConvertType(out[{{$i}}], new({{bindtype .Type $structs}})).(*{{bindtype .Type $structs}}){{end}} + + return {{range $i, $t := .Normalized.Outputs}}out{{$i}}, {{end}} err + {{end}} + } + + // {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Session) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type $structs}} {{end}}) ({{if .Structured}}struct{ {{range .Normalized.Outputs}}{{.Name}} {{bindtype .Type $structs}};{{end}} }, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type $structs}},{{end}} {{end}} error) { + return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.CallOpts {{range .Normalized.Inputs}}, {{.Name}}{{end}}) + } + + // {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}CallerSession) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type $structs}} {{end}}) ({{if .Structured}}struct{ {{range .Normalized.Outputs}}{{.Name}} {{bindtype .Type $structs}};{{end}} }, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type $structs}},{{end}} {{end}} error) { + return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.CallOpts {{range .Normalized.Inputs}}, {{.Name}}{{end}}) + } + {{end}} + + {{range .Transacts}} + // {{.Normalized.Name}} is a paid mutator transaction binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Transactor) {{.Normalized.Name}}(opts *bind.TransactOpts {{range .Normalized.Inputs}}, {{.Name}} {{bindtype .Type $structs}} {{end}}) (*types.Transaction, error) { + return _{{$contract.Type}}.contract.Transact(opts, "{{.Original.Name}}" {{range .Normalized.Inputs}}, {{.Name}}{{end}}) + } + + // {{.Normalized.Name}} is a paid mutator transaction binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Session) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type $structs}} {{end}}) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.TransactOpts {{range $i, $_ := .Normalized.Inputs}}, {{.Name}}{{end}}) + } + + // {{.Normalized.Name}} is a paid mutator transaction binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}TransactorSession) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type $structs}} {{end}}) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.TransactOpts {{range $i, $_ := .Normalized.Inputs}}, {{.Name}}{{end}}) + } + {{end}} + + {{if .Fallback}} + // Fallback is a paid mutator transaction binding the contract fallback function. + // + // Solidity: {{.Fallback.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Transactor) Fallback(opts *bind.TransactOpts, calldata []byte) (*types.Transaction, error) { + return _{{$contract.Type}}.contract.RawTransact(opts, calldata) + } + + // Fallback is a paid mutator transaction binding the contract fallback function. + // + // Solidity: {{.Fallback.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Session) Fallback(calldata []byte) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.Fallback(&_{{$contract.Type}}.TransactOpts, calldata) + } + + // Fallback is a paid mutator transaction binding the contract fallback function. + // + // Solidity: {{.Fallback.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}TransactorSession) Fallback(calldata []byte) (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.Fallback(&_{{$contract.Type}}.TransactOpts, calldata) + } + {{end}} + + {{if .Receive}} + // Receive is a paid mutator transaction binding the contract receive function. + // + // Solidity: {{.Receive.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Transactor) Receive(opts *bind.TransactOpts) (*types.Transaction, error) { + return _{{$contract.Type}}.contract.RawTransact(opts, nil) // calldata is disallowed for receive function + } + + // Receive is a paid mutator transaction binding the contract receive function. + // + // Solidity: {{.Receive.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Session) Receive() (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.Receive(&_{{$contract.Type}}.TransactOpts) + } + + // Receive is a paid mutator transaction binding the contract receive function. + // + // Solidity: {{.Receive.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}TransactorSession) Receive() (*types.Transaction, error) { + return _{{$contract.Type}}.Contract.Receive(&_{{$contract.Type}}.TransactOpts) + } + {{end}} + + {{range .Events}} + // {{$contract.Type}}{{.Normalized.Name}}Iterator is returned from Filter{{.Normalized.Name}} and is used to iterate over the raw logs and unpacked data for {{.Normalized.Name}} events raised by the {{$contract.Type}} contract. + type {{$contract.Type}}{{.Normalized.Name}}Iterator struct { + Event *{{$contract.Type}}{{.Normalized.Name}} // Event containing the contract specifics and raw log + + contract *bind.BoundContract // Generic contract to use for unpacking event data + event string // Event name to use for unpacking event data + + logs chan types.Log // Log channel receiving the found contract events + sub interfaces.Subscription // Subscription for errors, completion and termination + done bool // Whether the subscription completed delivering logs + fail error // Occurred error to stop iteration + } + // Next advances the iterator to the subsequent event, returning whether there + // are any more events found. In case of a retrieval or parsing error, false is + // returned and Error() can be queried for the exact failure. + func (it *{{$contract.Type}}{{.Normalized.Name}}Iterator) Next() bool { + // If the iterator failed, stop iterating + if (it.fail != nil) { + return false + } + // If the iterator completed, deliver directly whatever's available + if (it.done) { + select { + case log := <-it.logs: + it.Event = new({{$contract.Type}}{{.Normalized.Name}}) + if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil { + it.fail = err + return false + } + it.Event.Raw = log + return true + + default: + return false + } + } + // Iterator still in progress, wait for either a data or an error event + select { + case log := <-it.logs: + it.Event = new({{$contract.Type}}{{.Normalized.Name}}) + if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil { + it.fail = err + return false + } + it.Event.Raw = log + return true + + case err := <-it.sub.Err(): + it.done = true + it.fail = err + return it.Next() + } + } + // Error returns any retrieval or parsing error occurred during filtering. + func (it *{{$contract.Type}}{{.Normalized.Name}}Iterator) Error() error { + return it.fail + } + // Close terminates the iteration process, releasing any pending underlying + // resources. + func (it *{{$contract.Type}}{{.Normalized.Name}}Iterator) Close() error { + it.sub.Unsubscribe() + return nil + } + + // {{$contract.Type}}{{.Normalized.Name}} represents a {{.Normalized.Name}} event raised by the {{$contract.Type}} contract. + type {{$contract.Type}}{{.Normalized.Name}} struct { {{range .Normalized.Inputs}} + {{capitalise .Name}} {{if .Indexed}}{{bindtopictype .Type $structs}}{{else}}{{bindtype .Type $structs}}{{end}}; {{end}} + Raw types.Log // Blockchain specific contextual infos + } + + // Filter{{.Normalized.Name}} is a free log retrieval operation binding the contract event 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Filterer) Filter{{.Normalized.Name}}(opts *bind.FilterOpts{{range .Normalized.Inputs}}{{if .Indexed}}, {{.Name}} []{{bindtype .Type $structs}}{{end}}{{end}}) (*{{$contract.Type}}{{.Normalized.Name}}Iterator, error) { + {{range .Normalized.Inputs}} + {{if .Indexed}}var {{.Name}}Rule []interface{} + for _, {{.Name}}Item := range {{.Name}} { + {{.Name}}Rule = append({{.Name}}Rule, {{.Name}}Item) + }{{end}}{{end}} + + logs, sub, err := _{{$contract.Type}}.contract.FilterLogs(opts, "{{.Original.Name}}"{{range .Normalized.Inputs}}{{if .Indexed}}, {{.Name}}Rule{{end}}{{end}}) + if err != nil { + return nil, err + } + return &{{$contract.Type}}{{.Normalized.Name}}Iterator{contract: _{{$contract.Type}}.contract, event: "{{.Original.Name}}", logs: logs, sub: sub}, nil + } + + // Watch{{.Normalized.Name}} is a free log subscription operation binding the contract event 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Filterer) Watch{{.Normalized.Name}}(opts *bind.WatchOpts, sink chan<- *{{$contract.Type}}{{.Normalized.Name}}{{range .Normalized.Inputs}}{{if .Indexed}}, {{.Name}} []{{bindtype .Type $structs}}{{end}}{{end}}) (event.Subscription, error) { + {{range .Normalized.Inputs}} + {{if .Indexed}}var {{.Name}}Rule []interface{} + for _, {{.Name}}Item := range {{.Name}} { + {{.Name}}Rule = append({{.Name}}Rule, {{.Name}}Item) + }{{end}}{{end}} + + logs, sub, err := _{{$contract.Type}}.contract.WatchLogs(opts, "{{.Original.Name}}"{{range .Normalized.Inputs}}{{if .Indexed}}, {{.Name}}Rule{{end}}{{end}}) + if err != nil { + return nil, err + } + return event.NewSubscription(func(quit <-chan struct{}) error { + defer sub.Unsubscribe() + for { + select { + case log := <-logs: + // New log arrived, parse the event and forward to the user + event := new({{$contract.Type}}{{.Normalized.Name}}) + if err := _{{$contract.Type}}.contract.UnpackLog(event, "{{.Original.Name}}", log); err != nil { + return err + } + event.Raw = log + + select { + case sink <- event: + case err := <-sub.Err(): + return err + case <-quit: + return nil + } + case err := <-sub.Err(): + return err + case <-quit: + return nil + } + } + }), nil + } + + // Parse{{.Normalized.Name}} is a log parse operation binding the contract event 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + func (_{{$contract.Type}} *{{$contract.Type}}Filterer) Parse{{.Normalized.Name}}(log types.Log) (*{{$contract.Type}}{{.Normalized.Name}}, error) { + event := new({{$contract.Type}}{{.Normalized.Name}}) + if err := _{{$contract.Type}}.contract.UnpackLog(event, "{{.Original.Name}}", log); err != nil { + return nil, err + } + event.Raw = log + return event, nil + } + + {{end}} +{{end}} +` + +// tmplSourceJava is the Java source template that the generated Java contract binding +// is based on. +const tmplSourceJava = ` +// This file is an automatically generated Java binding. Do not modify as any +// change will likely be lost upon the next re-generation! + +package {{.Package}}; + +import org.ethereum.geth.*; +import java.util.*; + +{{$structs := .Structs}} +{{range $contract := .Contracts}} +{{if not .Library}}public {{end}}class {{.Type}} { + // ABI is the input ABI used to generate the binding from. + public final static String ABI = "{{.InputABI}}"; + {{if $contract.FuncSigs}} + // {{.Type}}FuncSigs maps the 4-byte function signature to its string representation. + public final static Map {{.Type}}FuncSigs; + static { + Hashtable temp = new Hashtable(); + {{range $strsig, $binsig := .FuncSigs}}temp.put("{{$binsig}}", "{{$strsig}}"); + {{end}} + {{.Type}}FuncSigs = Collections.unmodifiableMap(temp); + } + {{end}} + {{if .InputBin}} + // BYTECODE is the compiled bytecode used for deploying new contracts. + public final static String BYTECODE = "0x{{.InputBin}}"; + + // deploy deploys a new Ethereum contract, binding an instance of {{.Type}} to it. + public static {{.Type}} deploy(TransactOpts auth, EthereumClient client{{range .Constructor.Inputs}}, {{bindtype .Type $structs}} {{.Name}}{{end}}) throws Exception { + Interfaces args = Geth.newInterfaces({{(len .Constructor.Inputs)}}); + String bytecode = BYTECODE; + {{if .Libraries}} + + // "link" contract to dependent libraries by deploying them first. + {{range $pattern, $name := .Libraries}} + {{capitalise $name}} {{decapitalise $name}}Inst = {{capitalise $name}}.deploy(auth, client); + bytecode = bytecode.replace("__${{$pattern}}$__", {{decapitalise $name}}Inst.Address.getHex().substring(2)); + {{end}} + {{end}} + {{range $index, $element := .Constructor.Inputs}}Interface arg{{$index}} = Geth.newInterface();arg{{$index}}.set{{namedtype (bindtype .Type $structs) .Type}}({{.Name}});args.set({{$index}},arg{{$index}}); + {{end}} + return new {{.Type}}(Geth.deployContract(auth, ABI, Geth.decodeFromHex(bytecode), client, args)); + } + + // Internal constructor used by contract deployment. + private {{.Type}}(BoundContract deployment) { + this.Address = deployment.getAddress(); + this.Deployer = deployment.getDeployer(); + this.Contract = deployment; + } + {{end}} + + // Ethereum address where this contract is located at. + public final Address Address; + + // Ethereum transaction in which this contract was deployed (if known!). + public final Transaction Deployer; + + // Contract instance bound to a blockchain address. + private final BoundContract Contract; + + // Creates a new instance of {{.Type}}, bound to a specific deployed contract. + public {{.Type}}(Address address, EthereumClient client) throws Exception { + this(Geth.bindContract(address, ABI, client)); + } + + {{range .Calls}} + {{if gt (len .Normalized.Outputs) 1}} + // {{capitalise .Normalized.Name}}Results is the output of a call to {{.Normalized.Name}}. + public class {{capitalise .Normalized.Name}}Results { + {{range $index, $item := .Normalized.Outputs}}public {{bindtype .Type $structs}} {{if ne .Name ""}}{{.Name}}{{else}}Return{{$index}}{{end}}; + {{end}} + } + {{end}} + + // {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + public {{if gt (len .Normalized.Outputs) 1}}{{capitalise .Normalized.Name}}Results{{else if eq (len .Normalized.Outputs) 0}}void{{else}}{{range .Normalized.Outputs}}{{bindtype .Type $structs}}{{end}}{{end}} {{.Normalized.Name}}(CallOpts opts{{range .Normalized.Inputs}}, {{bindtype .Type $structs}} {{.Name}}{{end}}) throws Exception { + Interfaces args = Geth.newInterfaces({{(len .Normalized.Inputs)}}); + {{range $index, $item := .Normalized.Inputs}}Interface arg{{$index}} = Geth.newInterface();arg{{$index}}.set{{namedtype (bindtype .Type $structs) .Type}}({{.Name}});args.set({{$index}},arg{{$index}}); + {{end}} + + Interfaces results = Geth.newInterfaces({{(len .Normalized.Outputs)}}); + {{range $index, $item := .Normalized.Outputs}}Interface result{{$index}} = Geth.newInterface(); result{{$index}}.setDefault{{namedtype (bindtype .Type $structs) .Type}}(); results.set({{$index}}, result{{$index}}); + {{end}} + + if (opts == null) { + opts = Geth.newCallOpts(); + } + this.Contract.call(opts, results, "{{.Original.Name}}", args); + {{if gt (len .Normalized.Outputs) 1}} + {{capitalise .Normalized.Name}}Results result = new {{capitalise .Normalized.Name}}Results(); + {{range $index, $item := .Normalized.Outputs}}result.{{if ne .Name ""}}{{.Name}}{{else}}Return{{$index}}{{end}} = results.get({{$index}}).get{{namedtype (bindtype .Type $structs) .Type}}(); + {{end}} + return result; + {{else}}{{range .Normalized.Outputs}}return results.get(0).get{{namedtype (bindtype .Type $structs) .Type}}();{{end}} + {{end}} + } + {{end}} + + {{range .Transacts}} + // {{.Normalized.Name}} is a paid mutator transaction binding the contract method 0x{{printf "%x" .Original.ID}}. + // + // Solidity: {{.Original.String}} + public Transaction {{.Normalized.Name}}(TransactOpts opts{{range .Normalized.Inputs}}, {{bindtype .Type $structs}} {{.Name}}{{end}}) throws Exception { + Interfaces args = Geth.newInterfaces({{(len .Normalized.Inputs)}}); + {{range $index, $item := .Normalized.Inputs}}Interface arg{{$index}} = Geth.newInterface();arg{{$index}}.set{{namedtype (bindtype .Type $structs) .Type}}({{.Name}});args.set({{$index}},arg{{$index}}); + {{end}} + return this.Contract.transact(opts, "{{.Original.Name}}" , args); + } + {{end}} + + {{if .Fallback}} + // Fallback is a paid mutator transaction binding the contract fallback function. + // + // Solidity: {{.Fallback.Original.String}} + public Transaction Fallback(TransactOpts opts, byte[] calldata) throws Exception { + return this.Contract.rawTransact(opts, calldata); + } + {{end}} + + {{if .Receive}} + // Receive is a paid mutator transaction binding the contract receive function. + // + // Solidity: {{.Receive.Original.String}} + public Transaction Receive(TransactOpts opts) throws Exception { + return this.Contract.rawTransact(opts, null); + } + {{end}} +} +{{end}} +` diff --git a/accounts/abi/bind/util.go b/accounts/abi/bind/util.go new file mode 100644 index 0000000000..a292283b5a --- /dev/null +++ b/accounts/abi/bind/util.go @@ -0,0 +1,86 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind + +import ( + "context" + "errors" + "time" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +// WaitMined waits for tx to be mined on the blockchain. +// It stops waiting when the context is canceled. +func WaitMined(ctx context.Context, b DeployBackend, tx *types.Transaction) (*types.Receipt, error) { + queryTicker := time.NewTicker(time.Second) + defer queryTicker.Stop() + + logger := log.New("hash", tx.Hash()) + for { + receipt, err := b.TransactionReceipt(ctx, tx.Hash()) + if receipt != nil { + return receipt, nil + } + if err != nil { + logger.Trace("Receipt retrieval failed", "err", err) + } else { + logger.Trace("Transaction not yet mined") + } + // Wait for the next round. + select { + case <-ctx.Done(): + return nil, ctx.Err() + case <-queryTicker.C: + } + } +} + +// WaitDeployed waits for a contract deployment transaction and returns the on-chain +// contract address when it is mined. It stops waiting when ctx is canceled. +func WaitDeployed(ctx context.Context, b DeployBackend, tx *types.Transaction) (common.Address, error) { + if tx.To() != nil { + return common.Address{}, errors.New("tx is not contract creation") + } + receipt, err := WaitMined(ctx, b, tx) + if err != nil { + return common.Address{}, err + } + if receipt.ContractAddress == (common.Address{}) { + return common.Address{}, errors.New("zero address") + } + // Check that code has indeed been deployed at the address. + // This matters on pre-Homestead chains: OOG in the constructor + // could leave an empty account behind. + code, err := b.CodeAt(ctx, receipt.ContractAddress, nil) + if err == nil && len(code) == 0 { + err = ErrNoCodeAfterDeploy + } + return receipt.ContractAddress, err +} diff --git a/accounts/abi/bind/util_test.go b/accounts/abi/bind/util_test.go new file mode 100644 index 0000000000..0854179fde --- /dev/null +++ b/accounts/abi/bind/util_test.go @@ -0,0 +1,153 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bind_test + +import ( + "context" + "errors" + "math/big" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/accounts/abi/bind/backends" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +var testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + +var waitDeployedTests = map[string]struct { + code string + gas uint64 + wantAddress common.Address + wantErr error +}{ + "successful deploy": { + code: `6060604052600a8060106000396000f360606040526008565b00`, + gas: 3000000, + wantAddress: common.HexToAddress("0x3a220f351252089d385b29beca14e27f204c296a"), + }, + "empty code": { + code: ``, + gas: 300000, + wantErr: bind.ErrNoCodeAfterDeploy, + wantAddress: common.HexToAddress("0x3a220f351252089d385b29beca14e27f204c296a"), + }, +} + +func TestWaitDeployed(t *testing.T) { + for name, test := range waitDeployedTests { + backend := backends.NewSimulatedBackend( + core.GenesisAlloc{ + crypto.PubkeyToAddress(testKey.PublicKey): {Balance: new(big.Int).Mul(big.NewInt(10000000000000000), big.NewInt(1000))}, + }, + 10000000, + ) + defer backend.Close() + + // Create the transaction + head, _ := backend.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + tx := types.NewContractCreation(0, big.NewInt(0), test.gas, gasPrice, common.FromHex(test.code)) + signer := types.NewLondonSigner(big.NewInt(1337)) + tx, _ = types.SignTx(tx, signer, testKey) + + // Wait for it to get mined in the background. + var ( + err error + address common.Address + mined = make(chan struct{}) + ctx = context.Background() + ) + go func() { + address, err = bind.WaitDeployed(ctx, backend, tx) + close(mined) + }() + + // Send and mine the transaction. + if err := backend.SendTransaction(ctx, tx); err != nil { + t.Errorf("Failed to send transaction: %s", err) + } + backend.Commit(true) + + select { + case <-mined: + if err != test.wantErr { + t.Errorf("test %q: error mismatch: want %q, got %q", name, test.wantErr, err) + } + if address != test.wantAddress { + t.Errorf("test %q: unexpected contract address %s", name, address.Hex()) + } + case <-time.After(2 * time.Second): + t.Errorf("test %q: timeout", name) + } + } +} + +func TestWaitDeployedCornerCases(t *testing.T) { + backend := backends.NewSimulatedBackend( + core.GenesisAlloc{ + crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(1000000000000000000)}, + }, + 10000000, + ) + defer backend.Close() + + head, _ := backend.HeaderByNumber(context.Background(), nil) // Should be child's, good enough + gasPrice := new(big.Int).Add(head.BaseFee, big.NewInt(1)) + + // Create a transaction to an account. + code := "6060604052600a8060106000396000f360606040526008565b00" + tx := types.NewTransaction(0, common.HexToAddress("0x01"), big.NewInt(0), 3000000, gasPrice, common.FromHex(code)) + tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey) + ctx, cancel := context.WithCancel(context.Background()) + defer cancel() + backend.SendTransaction(ctx, tx) + backend.Commit(true) + notContentCreation := errors.New("tx is not contract creation") + if _, err := bind.WaitDeployed(ctx, backend, tx); err.Error() != notContentCreation.Error() { + t.Errorf("error missmatch: want %q, got %q, ", notContentCreation, err) + } + + // Create a transaction that is not mined. + tx = types.NewContractCreation(1, big.NewInt(0), 3000000, gasPrice, common.FromHex(code)) + tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey) + + go func() { + contextCanceled := errors.New("context canceled") + if _, err := bind.WaitDeployed(ctx, backend, tx); err.Error() != contextCanceled.Error() { + t.Errorf("error missmatch: want %q, got %q, ", contextCanceled, err) + } + }() + + backend.SendTransaction(ctx, tx) + cancel() +} diff --git a/accounts/abi/doc.go b/accounts/abi/doc.go new file mode 100644 index 0000000000..4bcea06821 --- /dev/null +++ b/accounts/abi/doc.go @@ -0,0 +1,36 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package abi implements the Ethereum ABI (Application Binary +// Interface). +// +// The Ethereum ABI is strongly typed, known at compile time +// and static. This ABI will handle basic type casting; unsigned +// to signed and visa versa. It does not handle slice casting such +// as unsigned slice to signed slice. Bit size type casting is also +// handled. ints with a bit size of 32 will be properly cast to int256, +// etc. +package abi diff --git a/accounts/abi/error.go b/accounts/abi/error.go new file mode 100644 index 0000000000..cfd9a29511 --- /dev/null +++ b/accounts/abi/error.go @@ -0,0 +1,101 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "bytes" + "errors" + "fmt" + "strings" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +type Error struct { + Name string + Inputs Arguments + str string + // Sig contains the string signature according to the ABI spec. + // e.g. event foo(uint32 a, int b) = "foo(uint32,int256)" + // Please note that "int" is substitute for its canonical representation "int256" + Sig string + // ID returns the canonical representation of the event's signature used by the + // abi definition to identify event names and types. + ID common.Hash +} + +func NewError(name string, inputs Arguments) Error { + // sanitize inputs to remove inputs without names + // and precompute string and sig representation. + names := make([]string, len(inputs)) + types := make([]string, len(inputs)) + for i, input := range inputs { + if input.Name == "" { + inputs[i] = Argument{ + Name: fmt.Sprintf("arg%d", i), + Indexed: input.Indexed, + Type: input.Type, + } + } else { + inputs[i] = input + } + // string representation + names[i] = fmt.Sprintf("%v %v", input.Type, inputs[i].Name) + if input.Indexed { + names[i] = fmt.Sprintf("%v indexed %v", input.Type, inputs[i].Name) + } + // sig representation + types[i] = input.Type.String() + } + + str := fmt.Sprintf("error %v(%v)", name, strings.Join(names, ", ")) + sig := fmt.Sprintf("%v(%v)", name, strings.Join(types, ",")) + id := common.BytesToHash(crypto.Keccak256([]byte(sig))) + + return Error{ + Name: name, + Inputs: inputs, + str: str, + Sig: sig, + ID: id, + } +} + +func (e *Error) String() string { + return e.str +} + +func (e *Error) Unpack(data []byte) (interface{}, error) { + if len(data) < 4 { + return "", errors.New("invalid data for unpacking") + } + if !bytes.Equal(data[:4], e.ID[:4]) { + return "", errors.New("invalid data for unpacking") + } + return e.Inputs.Unpack(data[4:]) +} diff --git a/accounts/abi/error_handling.go b/accounts/abi/error_handling.go new file mode 100644 index 0000000000..80ef767180 --- /dev/null +++ b/accounts/abi/error_handling.go @@ -0,0 +1,92 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "errors" + "fmt" + "reflect" +) + +var ( + errBadBool = errors.New("abi: improperly encoded boolean value") +) + +// formatSliceString formats the reflection kind with the given slice size +// and returns a formatted string representation. +func formatSliceString(kind reflect.Kind, sliceSize int) string { + if sliceSize == -1 { + return fmt.Sprintf("[]%v", kind) + } + return fmt.Sprintf("[%d]%v", sliceSize, kind) +} + +// sliceTypeCheck checks that the given slice can by assigned to the reflection +// type in t. +func sliceTypeCheck(t Type, val reflect.Value) error { + if val.Kind() != reflect.Slice && val.Kind() != reflect.Array { + return typeErr(formatSliceString(t.GetType().Kind(), t.Size), val.Type()) + } + + if t.T == ArrayTy && val.Len() != t.Size { + return typeErr(formatSliceString(t.Elem.GetType().Kind(), t.Size), formatSliceString(val.Type().Elem().Kind(), val.Len())) + } + + if t.Elem.T == SliceTy || t.Elem.T == ArrayTy { + if val.Len() > 0 { + return sliceTypeCheck(*t.Elem, val.Index(0)) + } + } + + if val.Type().Elem().Kind() != t.Elem.GetType().Kind() { + return typeErr(formatSliceString(t.Elem.GetType().Kind(), t.Size), val.Type()) + } + return nil +} + +// typeCheck checks that the given reflection value can be assigned to the reflection +// type in t. +func typeCheck(t Type, value reflect.Value) error { + if t.T == SliceTy || t.T == ArrayTy { + return sliceTypeCheck(t, value) + } + + // Check base type validity. Element types will be checked later on. + if t.GetType().Kind() != value.Kind() { + return typeErr(t.GetType().Kind(), value.Kind()) + } else if t.T == FixedBytesTy && t.Size != value.Len() { + return typeErr(t.GetType(), value.Type()) + } else { + return nil + } + +} + +// typeErr returns a formatted type casting error. +func typeErr(expected, got interface{}) error { + return fmt.Errorf("abi: cannot use %v as type %v as argument", got, expected) +} diff --git a/accounts/abi/event.go b/accounts/abi/event.go new file mode 100644 index 0000000000..03937b8e1d --- /dev/null +++ b/accounts/abi/event.go @@ -0,0 +1,110 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "fmt" + "strings" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +// Event is an event potentially triggered by the EVM's LOG mechanism. The Event +// holds type information (inputs) about the yielded output. Anonymous events +// don't get the signature canonical representation as the first LOG topic. +type Event struct { + // Name is the event name used for internal representation. It's derived from + // the raw name and a suffix will be added in the case of a event overload. + // + // e.g. + // These are two events that have the same name: + // * foo(int,int) + // * foo(uint,uint) + // The event name of the first one wll be resolved as foo while the second one + // will be resolved as foo0. + Name string + // RawName is the raw event name parsed from ABI. + RawName string + Anonymous bool + Inputs Arguments + str string + // Sig contains the string signature according to the ABI spec. + // e.g. event foo(uint32 a, int b) = "foo(uint32,int256)" + // Please note that "int" is substitute for its canonical representation "int256" + Sig string + // ID returns the canonical representation of the event's signature used by the + // abi definition to identify event names and types. + ID common.Hash +} + +// NewEvent creates a new Event. +// It sanitizes the input arguments to remove unnamed arguments. +// It also precomputes the id, signature and string representation +// of the event. +func NewEvent(name, rawName string, anonymous bool, inputs Arguments) Event { + // sanitize inputs to remove inputs without names + // and precompute string and sig representation. + names := make([]string, len(inputs)) + types := make([]string, len(inputs)) + for i, input := range inputs { + if input.Name == "" { + inputs[i] = Argument{ + Name: fmt.Sprintf("arg%d", i), + Indexed: input.Indexed, + Type: input.Type, + } + } else { + inputs[i] = input + } + // string representation + names[i] = fmt.Sprintf("%v %v", input.Type, inputs[i].Name) + if input.Indexed { + names[i] = fmt.Sprintf("%v indexed %v", input.Type, inputs[i].Name) + } + // sig representation + types[i] = input.Type.String() + } + + str := fmt.Sprintf("event %v(%v)", rawName, strings.Join(names, ", ")) + sig := fmt.Sprintf("%v(%v)", rawName, strings.Join(types, ",")) + id := common.BytesToHash(crypto.Keccak256([]byte(sig))) + + return Event{ + Name: name, + RawName: rawName, + Anonymous: anonymous, + Inputs: inputs, + str: str, + Sig: sig, + ID: id, + } +} + +func (e Event) String() string { + return e.str +} diff --git a/accounts/abi/event_test.go b/accounts/abi/event_test.go new file mode 100644 index 0000000000..f5c286d83e --- /dev/null +++ b/accounts/abi/event_test.go @@ -0,0 +1,400 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "bytes" + "encoding/hex" + "encoding/json" + "math/big" + "reflect" + "strings" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +var jsonEventTransfer = []byte(`{ + "anonymous": false, + "inputs": [ + { + "indexed": true, "name": "from", "type": "address" + }, { + "indexed": true, "name": "to", "type": "address" + }, { + "indexed": false, "name": "value", "type": "uint256" + }], + "name": "Transfer", + "type": "event" +}`) + +var jsonEventPledge = []byte(`{ + "anonymous": false, + "inputs": [{ + "indexed": false, "name": "who", "type": "address" + }, { + "indexed": false, "name": "wad", "type": "uint128" + }, { + "indexed": false, "name": "currency", "type": "bytes3" + }], + "name": "Pledge", + "type": "event" +}`) + +var jsonEventMixedCase = []byte(`{ + "anonymous": false, + "inputs": [{ + "indexed": false, "name": "value", "type": "uint256" + }, { + "indexed": false, "name": "_value", "type": "uint256" + }, { + "indexed": false, "name": "Value", "type": "uint256" + }], + "name": "MixedCase", + "type": "event" + }`) + +// 1000000 +var transferData1 = "00000000000000000000000000000000000000000000000000000000000f4240" + +// "0x00Ce0d46d924CC8437c806721496599FC3FFA268", 2218516807680, "usd" +var pledgeData1 = "00000000000000000000000000ce0d46d924cc8437c806721496599fc3ffa2680000000000000000000000000000000000000000000000000000020489e800007573640000000000000000000000000000000000000000000000000000000000" + +// 1000000,2218516807680,1000001 +var mixedCaseData1 = "00000000000000000000000000000000000000000000000000000000000f42400000000000000000000000000000000000000000000000000000020489e8000000000000000000000000000000000000000000000000000000000000000f4241" + +func TestEventId(t *testing.T) { + var table = []struct { + definition string + expectations map[string]common.Hash + }{ + { + definition: `[ + { "type" : "event", "name" : "Balance", "inputs": [{ "name" : "in", "type": "uint256" }] }, + { "type" : "event", "name" : "Check", "inputs": [{ "name" : "t", "type": "address" }, { "name": "b", "type": "uint256" }] } + ]`, + expectations: map[string]common.Hash{ + "Balance": crypto.Keccak256Hash([]byte("Balance(uint256)")), + "Check": crypto.Keccak256Hash([]byte("Check(address,uint256)")), + }, + }, + } + + for _, test := range table { + abi, err := JSON(strings.NewReader(test.definition)) + if err != nil { + t.Fatal(err) + } + + for name, event := range abi.Events { + if event.ID != test.expectations[name] { + t.Errorf("expected id to be %x, got %x", test.expectations[name], event.ID) + } + } + } +} + +func TestEventString(t *testing.T) { + var table = []struct { + definition string + expectations map[string]string + }{ + { + definition: `[ + { "type" : "event", "name" : "Balance", "inputs": [{ "name" : "in", "type": "uint256" }] }, + { "type" : "event", "name" : "Check", "inputs": [{ "name" : "t", "type": "address" }, { "name": "b", "type": "uint256" }] }, + { "type" : "event", "name" : "Transfer", "inputs": [{ "name": "from", "type": "address", "indexed": true }, { "name": "to", "type": "address", "indexed": true }, { "name": "value", "type": "uint256" }] } + ]`, + expectations: map[string]string{ + "Balance": "event Balance(uint256 in)", + "Check": "event Check(address t, uint256 b)", + "Transfer": "event Transfer(address indexed from, address indexed to, uint256 value)", + }, + }, + } + + for _, test := range table { + abi, err := JSON(strings.NewReader(test.definition)) + if err != nil { + t.Fatal(err) + } + + for name, event := range abi.Events { + if event.String() != test.expectations[name] { + t.Errorf("expected string to be %s, got %s", test.expectations[name], event.String()) + } + } + } +} + +// TestEventMultiValueWithArrayUnpack verifies that array fields will be counted after parsing array. +func TestEventMultiValueWithArrayUnpack(t *testing.T) { + definition := `[{"name": "test", "type": "event", "inputs": [{"indexed": false, "name":"value1", "type":"uint8[2]"},{"indexed": false, "name":"value2", "type":"uint8"}]}]` + abi, err := JSON(strings.NewReader(definition)) + require.NoError(t, err) + var b bytes.Buffer + var i uint8 = 1 + for ; i <= 3; i++ { + b.Write(packNum(reflect.ValueOf(i))) + } + unpacked, err := abi.Unpack("test", b.Bytes()) + require.NoError(t, err) + require.Equal(t, [2]uint8{1, 2}, unpacked[0]) + require.Equal(t, uint8(3), unpacked[1]) +} + +func TestEventTupleUnpack(t *testing.T) { + + type EventTransfer struct { + Value *big.Int + } + + type EventTransferWithTag struct { + // this is valid because `value` is not exportable, + // so value is only unmarshalled into `Value1`. + value *big.Int //lint:ignore U1000 unused field is part of test + Value1 *big.Int `abi:"value"` + } + + type BadEventTransferWithSameFieldAndTag struct { + Value *big.Int + Value1 *big.Int `abi:"value"` + } + + type BadEventTransferWithDuplicatedTag struct { + Value1 *big.Int `abi:"value"` + Value2 *big.Int `abi:"value"` + } + + type BadEventTransferWithEmptyTag struct { + Value *big.Int `abi:""` + } + + type EventPledge struct { + Who common.Address + Wad *big.Int + Currency [3]byte + } + + type BadEventPledge struct { + Who string + Wad int + Currency [3]byte + } + + type EventMixedCase struct { + Value1 *big.Int `abi:"value"` + Value2 *big.Int `abi:"_value"` + Value3 *big.Int `abi:"Value"` + } + + bigint := new(big.Int) + bigintExpected := big.NewInt(1000000) + bigintExpected2 := big.NewInt(2218516807680) + bigintExpected3 := big.NewInt(1000001) + addr := common.HexToAddress("0x00Ce0d46d924CC8437c806721496599FC3FFA268") + var testCases = []struct { + data string + dest interface{} + expected interface{} + jsonLog []byte + error string + name string + }{{ + transferData1, + &EventTransfer{}, + &EventTransfer{Value: bigintExpected}, + jsonEventTransfer, + "", + "Can unpack ERC20 Transfer event into structure", + }, { + transferData1, + &[]interface{}{&bigint}, + &[]interface{}{&bigintExpected}, + jsonEventTransfer, + "", + "Can unpack ERC20 Transfer event into slice", + }, { + transferData1, + &EventTransferWithTag{}, + &EventTransferWithTag{Value1: bigintExpected}, + jsonEventTransfer, + "", + "Can unpack ERC20 Transfer event into structure with abi: tag", + }, { + transferData1, + &BadEventTransferWithDuplicatedTag{}, + &BadEventTransferWithDuplicatedTag{}, + jsonEventTransfer, + "struct: abi tag in 'Value2' already mapped", + "Can not unpack ERC20 Transfer event with duplicated abi tag", + }, { + transferData1, + &BadEventTransferWithSameFieldAndTag{}, + &BadEventTransferWithSameFieldAndTag{}, + jsonEventTransfer, + "abi: multiple variables maps to the same abi field 'value'", + "Can not unpack ERC20 Transfer event with a field and a tag mapping to the same abi variable", + }, { + transferData1, + &BadEventTransferWithEmptyTag{}, + &BadEventTransferWithEmptyTag{}, + jsonEventTransfer, + "struct: abi tag in 'Value' is empty", + "Can not unpack ERC20 Transfer event with an empty tag", + }, { + pledgeData1, + &EventPledge{}, + &EventPledge{ + addr, + bigintExpected2, + [3]byte{'u', 's', 'd'}}, + jsonEventPledge, + "", + "Can unpack Pledge event into structure", + }, { + pledgeData1, + &[]interface{}{&common.Address{}, &bigint, &[3]byte{}}, + &[]interface{}{ + &addr, + &bigintExpected2, + &[3]byte{'u', 's', 'd'}}, + jsonEventPledge, + "", + "Can unpack Pledge event into slice", + }, { + pledgeData1, + &[3]interface{}{&common.Address{}, &bigint, &[3]byte{}}, + &[3]interface{}{ + &addr, + &bigintExpected2, + &[3]byte{'u', 's', 'd'}}, + jsonEventPledge, + "", + "Can unpack Pledge event into an array", + }, { + pledgeData1, + &[]interface{}{new(int), 0, 0}, + &[]interface{}{}, + jsonEventPledge, + "abi: cannot unmarshal common.Address in to int", + "Can not unpack Pledge event into slice with wrong types", + }, { + pledgeData1, + &BadEventPledge{}, + &BadEventPledge{}, + jsonEventPledge, + "abi: cannot unmarshal common.Address in to string", + "Can not unpack Pledge event into struct with wrong filed types", + }, { + pledgeData1, + &[]interface{}{common.Address{}, new(big.Int)}, + &[]interface{}{}, + jsonEventPledge, + "abi: insufficient number of arguments for unpack, want 3, got 2", + "Can not unpack Pledge event into too short slice", + }, { + pledgeData1, + new(map[string]interface{}), + &[]interface{}{}, + jsonEventPledge, + "abi:[2] cannot unmarshal tuple in to map[string]interface {}", + "Can not unpack Pledge event into map", + }, { + mixedCaseData1, + &EventMixedCase{}, + &EventMixedCase{Value1: bigintExpected, Value2: bigintExpected2, Value3: bigintExpected3}, + jsonEventMixedCase, + "", + "Can unpack abi variables with mixed case", + }} + + for _, tc := range testCases { + assert := assert.New(t) + tc := tc + t.Run(tc.name, func(t *testing.T) { + err := unpackTestEventData(tc.dest, tc.data, tc.jsonLog, assert) + if tc.error == "" { + assert.Nil(err, "Should be able to unpack event data.") + assert.Equal(tc.expected, tc.dest, tc.name) + } else { + assert.EqualError(err, tc.error, tc.name) + } + }) + } +} + +func unpackTestEventData(dest interface{}, hexData string, jsonEvent []byte, assert *assert.Assertions) error { + data, err := hex.DecodeString(hexData) + assert.NoError(err, "Hex data should be a correct hex-string") + var e Event + assert.NoError(json.Unmarshal(jsonEvent, &e), "Should be able to unmarshal event ABI") + a := ABI{Events: map[string]Event{"e": e}} + return a.UnpackIntoInterface(dest, "e", data) +} + +// TestEventUnpackIndexed verifies that indexed field will be skipped by event decoder. +func TestEventUnpackIndexed(t *testing.T) { + definition := `[{"name": "test", "type": "event", "inputs": [{"indexed": true, "name":"value1", "type":"uint8"},{"indexed": false, "name":"value2", "type":"uint8"}]}]` + type testStruct struct { + Value1 uint8 // indexed + Value2 uint8 + } + abi, err := JSON(strings.NewReader(definition)) + require.NoError(t, err) + var b bytes.Buffer + b.Write(packNum(reflect.ValueOf(uint8(8)))) + var rst testStruct + require.NoError(t, abi.UnpackIntoInterface(&rst, "test", b.Bytes())) + require.Equal(t, uint8(0), rst.Value1) + require.Equal(t, uint8(8), rst.Value2) +} + +// TestEventIndexedWithArrayUnpack verifies that decoder will not overflow when static array is indexed input. +func TestEventIndexedWithArrayUnpack(t *testing.T) { + definition := `[{"name": "test", "type": "event", "inputs": [{"indexed": true, "name":"value1", "type":"uint8[2]"},{"indexed": false, "name":"value2", "type":"string"}]}]` + type testStruct struct { + Value1 [2]uint8 // indexed + Value2 string + } + abi, err := JSON(strings.NewReader(definition)) + require.NoError(t, err) + var b bytes.Buffer + stringOut := "abc" + // number of fields that will be encoded * 32 + b.Write(packNum(reflect.ValueOf(32))) + b.Write(packNum(reflect.ValueOf(len(stringOut)))) + b.Write(common.RightPadBytes([]byte(stringOut), 32)) + + var rst testStruct + require.NoError(t, abi.UnpackIntoInterface(&rst, "test", b.Bytes())) + require.Equal(t, [2]uint8{0, 0}, rst.Value1) + require.Equal(t, stringOut, rst.Value2) +} diff --git a/accounts/abi/method.go b/accounts/abi/method.go new file mode 100644 index 0000000000..df8d2f6df0 --- /dev/null +++ b/accounts/abi/method.go @@ -0,0 +1,177 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "fmt" + "strings" + + "github.com/ethereum/go-ethereum/crypto" +) + +// FunctionType represents different types of functions a contract might have. +type FunctionType int + +const ( + // Constructor represents the constructor of the contract. + // The constructor function is called while deploying a contract. + Constructor FunctionType = iota + // Fallback represents the fallback function. + // This function is executed if no other function matches the given function + // signature and no receive function is specified. + Fallback + // Receive represents the receive function. + // This function is executed on plain Ether transfers. + Receive + // Function represents a normal function. + Function +) + +// Method represents a callable given a `Name` and whether the method is a constant. +// If the method is `Const` no transaction needs to be created for this +// particular Method call. It can easily be simulated using a local VM. +// For example a `Balance()` method only needs to retrieve something +// from the storage and therefore requires no Tx to be sent to the +// network. A method such as `Transact` does require a Tx and thus will +// be flagged `false`. +// Input specifies the required input parameters for this gives method. +type Method struct { + // Name is the method name used for internal representation. It's derived from + // the raw name and a suffix will be added in the case of a function overload. + // + // e.g. + // These are two functions that have the same name: + // * foo(int,int) + // * foo(uint,uint) + // The method name of the first one will be resolved as foo while the second one + // will be resolved as foo0. + Name string + RawName string // RawName is the raw method name parsed from ABI + + // Type indicates whether the method is a + // special fallback introduced in solidity v0.6.0 + Type FunctionType + + // StateMutability indicates the mutability state of method, + // the default value is nonpayable. It can be empty if the abi + // is generated by legacy compiler. + StateMutability string + + // Legacy indicators generated by compiler before v0.6.0 + Constant bool + Payable bool + + Inputs Arguments + Outputs Arguments + str string + // Sig returns the methods string signature according to the ABI spec. + // e.g. function foo(uint32 a, int b) = "foo(uint32,int256)" + // Please note that "int" is substitute for its canonical representation "int256" + Sig string + // ID returns the canonical representation of the method's signature used by the + // abi definition to identify method names and types. + ID []byte +} + +// NewMethod creates a new Method. +// A method should always be created using NewMethod. +// It also precomputes the sig representation and the string representation +// of the method. +func NewMethod(name string, rawName string, funType FunctionType, mutability string, isConst, isPayable bool, inputs Arguments, outputs Arguments) Method { + var ( + types = make([]string, len(inputs)) + inputNames = make([]string, len(inputs)) + outputNames = make([]string, len(outputs)) + ) + for i, input := range inputs { + inputNames[i] = fmt.Sprintf("%v %v", input.Type, input.Name) + types[i] = input.Type.String() + } + for i, output := range outputs { + outputNames[i] = output.Type.String() + if len(output.Name) > 0 { + outputNames[i] += fmt.Sprintf(" %v", output.Name) + } + } + // calculate the signature and method id. Note only function + // has meaningful signature and id. + var ( + sig string + id []byte + ) + if funType == Function { + sig = fmt.Sprintf("%v(%v)", rawName, strings.Join(types, ",")) + id = crypto.Keccak256([]byte(sig))[:4] + } + // Extract meaningful state mutability of solidity method. + // If it's default value, never print it. + state := mutability + if state == "nonpayable" { + state = "" + } + if state != "" { + state = state + " " + } + identity := fmt.Sprintf("function %v", rawName) + if funType == Fallback { + identity = "fallback" + } else if funType == Receive { + identity = "receive" + } else if funType == Constructor { + identity = "constructor" + } + str := fmt.Sprintf("%v(%v) %sreturns(%v)", identity, strings.Join(inputNames, ", "), state, strings.Join(outputNames, ", ")) + + return Method{ + Name: name, + RawName: rawName, + Type: funType, + StateMutability: mutability, + Constant: isConst, + Payable: isPayable, + Inputs: inputs, + Outputs: outputs, + str: str, + Sig: sig, + ID: id, + } +} + +func (method Method) String() string { + return method.str +} + +// IsConstant returns the indicator whether the method is read-only. +func (method Method) IsConstant() bool { + return method.StateMutability == "view" || method.StateMutability == "pure" || method.Constant +} + +// IsPayable returns the indicator whether the method can process +// plain ether transfers. +func (method Method) IsPayable() bool { + return method.StateMutability == "payable" || method.Payable +} diff --git a/accounts/abi/method_test.go b/accounts/abi/method_test.go new file mode 100644 index 0000000000..ace22edfee --- /dev/null +++ b/accounts/abi/method_test.go @@ -0,0 +1,155 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "strings" + "testing" +) + +const methoddata = ` +[ + {"type": "function", "name": "balance", "stateMutability": "view"}, + {"type": "function", "name": "send", "inputs": [{ "name": "amount", "type": "uint256" }]}, + {"type": "function", "name": "transfer", "inputs": [{"name": "from", "type": "address"}, {"name": "to", "type": "address"}, {"name": "value", "type": "uint256"}], "outputs": [{"name": "success", "type": "bool"}]}, + {"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple"}],"name":"tuple","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}, + {"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple[]"}],"name":"tupleSlice","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}, + {"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple[5]"}],"name":"tupleArray","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}, + {"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple[5][]"}],"name":"complexTuple","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}, + {"stateMutability":"nonpayable","type":"fallback"}, + {"stateMutability":"payable","type":"receive"} +]` + +func TestMethodString(t *testing.T) { + var table = []struct { + method string + expectation string + }{ + { + method: "balance", + expectation: "function balance() view returns()", + }, + { + method: "send", + expectation: "function send(uint256 amount) returns()", + }, + { + method: "transfer", + expectation: "function transfer(address from, address to, uint256 value) returns(bool success)", + }, + { + method: "tuple", + expectation: "function tuple((uint256,uint256) a) returns()", + }, + { + method: "tupleArray", + expectation: "function tupleArray((uint256,uint256)[5] a) returns()", + }, + { + method: "tupleSlice", + expectation: "function tupleSlice((uint256,uint256)[] a) returns()", + }, + { + method: "complexTuple", + expectation: "function complexTuple((uint256,uint256)[5][] a) returns()", + }, + { + method: "fallback", + expectation: "fallback() returns()", + }, + { + method: "receive", + expectation: "receive() payable returns()", + }, + } + + abi, err := JSON(strings.NewReader(methoddata)) + if err != nil { + t.Fatal(err) + } + + for _, test := range table { + var got string + if test.method == "fallback" { + got = abi.Fallback.String() + } else if test.method == "receive" { + got = abi.Receive.String() + } else { + got = abi.Methods[test.method].String() + } + if got != test.expectation { + t.Errorf("expected string to be %s, got %s", test.expectation, got) + } + } +} + +func TestMethodSig(t *testing.T) { + var cases = []struct { + method string + expect string + }{ + { + method: "balance", + expect: "balance()", + }, + { + method: "send", + expect: "send(uint256)", + }, + { + method: "transfer", + expect: "transfer(address,address,uint256)", + }, + { + method: "tuple", + expect: "tuple((uint256,uint256))", + }, + { + method: "tupleArray", + expect: "tupleArray((uint256,uint256)[5])", + }, + { + method: "tupleSlice", + expect: "tupleSlice((uint256,uint256)[])", + }, + { + method: "complexTuple", + expect: "complexTuple((uint256,uint256)[5][])", + }, + } + abi, err := JSON(strings.NewReader(methoddata)) + if err != nil { + t.Fatal(err) + } + + for _, test := range cases { + got := abi.Methods[test.method].Sig + if got != test.expect { + t.Errorf("expected string to be %s, got %s", test.expect, got) + } + } +} diff --git a/accounts/abi/pack.go b/accounts/abi/pack.go new file mode 100644 index 0000000000..542e755946 --- /dev/null +++ b/accounts/abi/pack.go @@ -0,0 +1,95 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "errors" + "fmt" + "math/big" + "reflect" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" +) + +// packBytesSlice packs the given bytes as [L, V] as the canonical representation +// bytes slice. +func packBytesSlice(bytes []byte, l int) []byte { + len := packNum(reflect.ValueOf(l)) + return append(len, common.RightPadBytes(bytes, (l+31)/32*32)...) +} + +// packElement packs the given reflect value according to the abi specification in +// t. +func packElement(t Type, reflectValue reflect.Value) ([]byte, error) { + switch t.T { + case IntTy, UintTy: + return packNum(reflectValue), nil + case StringTy: + return packBytesSlice([]byte(reflectValue.String()), reflectValue.Len()), nil + case AddressTy: + if reflectValue.Kind() == reflect.Array { + reflectValue = mustArrayToByteSlice(reflectValue) + } + + return common.LeftPadBytes(reflectValue.Bytes(), 32), nil + case BoolTy: + if reflectValue.Bool() { + return math.PaddedBigBytes(common.Big1, 32), nil + } + return math.PaddedBigBytes(common.Big0, 32), nil + case BytesTy: + if reflectValue.Kind() == reflect.Array { + reflectValue = mustArrayToByteSlice(reflectValue) + } + if reflectValue.Type() != reflect.TypeOf([]byte{}) { + return []byte{}, errors.New("Bytes type is neither slice nor array") + } + return packBytesSlice(reflectValue.Bytes(), reflectValue.Len()), nil + case FixedBytesTy, FunctionTy: + if reflectValue.Kind() == reflect.Array { + reflectValue = mustArrayToByteSlice(reflectValue) + } + return common.RightPadBytes(reflectValue.Bytes(), 32), nil + default: + return []byte{}, fmt.Errorf("Could not pack element, unknown type: %v", t.T) + } +} + +// packNum packs the given number (using the reflect value) and will cast it to appropriate number representation. +func packNum(value reflect.Value) []byte { + switch kind := value.Kind(); kind { + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: + return math.U256Bytes(new(big.Int).SetUint64(value.Uint())) + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return math.U256Bytes(big.NewInt(value.Int())) + case reflect.Ptr: + return math.U256Bytes(new(big.Int).Set(value.Interface().(*big.Int))) + default: + panic("abi: fatal error") + } +} diff --git a/accounts/abi/pack_test.go b/accounts/abi/pack_test.go new file mode 100644 index 0000000000..6f3e53f673 --- /dev/null +++ b/accounts/abi/pack_test.go @@ -0,0 +1,221 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "bytes" + "encoding/hex" + "fmt" + "math" + "math/big" + "reflect" + "strconv" + "strings" + "testing" + + "github.com/ethereum/go-ethereum/common" +) + +// TestPack tests the general pack/unpack tests in packing_test.go +func TestPack(t *testing.T) { + for i, test := range packUnpackTests { + t.Run(strconv.Itoa(i), func(t *testing.T) { + encb, err := hex.DecodeString(test.packed) + if err != nil { + t.Fatalf("invalid hex %s: %v", test.packed, err) + } + inDef := fmt.Sprintf(`[{ "name" : "method", "type": "function", "inputs": %s}]`, test.def) + inAbi, err := JSON(strings.NewReader(inDef)) + if err != nil { + t.Fatalf("invalid ABI definition %s, %v", inDef, err) + } + var packed []byte + packed, err = inAbi.Pack("method", test.unpacked) + + if err != nil { + t.Fatalf("test %d (%v) failed: %v", i, test.def, err) + } + if !reflect.DeepEqual(packed[4:], encb) { + t.Errorf("test %d (%v) failed: expected %v, got %v", i, test.def, encb, packed[4:]) + } + }) + } +} + +func TestMethodPack(t *testing.T) { + abi, err := JSON(strings.NewReader(jsondata)) + if err != nil { + t.Fatal(err) + } + + sig := abi.Methods["slice"].ID + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + + packed, err := abi.Pack("slice", []uint32{1, 2}) + if err != nil { + t.Error(err) + } + + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } + + var addrA, addrB = common.Address{1}, common.Address{2} + sig = abi.Methods["sliceAddress"].ID + sig = append(sig, common.LeftPadBytes([]byte{32}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes(addrA[:], 32)...) + sig = append(sig, common.LeftPadBytes(addrB[:], 32)...) + + packed, err = abi.Pack("sliceAddress", []common.Address{addrA, addrB}) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } + + var addrC, addrD = common.Address{3}, common.Address{4} + sig = abi.Methods["sliceMultiAddress"].ID + sig = append(sig, common.LeftPadBytes([]byte{64}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{160}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes(addrA[:], 32)...) + sig = append(sig, common.LeftPadBytes(addrB[:], 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes(addrC[:], 32)...) + sig = append(sig, common.LeftPadBytes(addrD[:], 32)...) + + packed, err = abi.Pack("sliceMultiAddress", []common.Address{addrA, addrB}, []common.Address{addrC, addrD}) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } + + sig = abi.Methods["slice256"].ID + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + + packed, err = abi.Pack("slice256", []*big.Int{big.NewInt(1), big.NewInt(2)}) + if err != nil { + t.Error(err) + } + + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } + + a := [2][2]*big.Int{{big.NewInt(1), big.NewInt(1)}, {big.NewInt(2), big.NewInt(0)}} + sig = abi.Methods["nestedArray"].ID + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{0}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{0xa0}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes(addrC[:], 32)...) + sig = append(sig, common.LeftPadBytes(addrD[:], 32)...) + packed, err = abi.Pack("nestedArray", a, []common.Address{addrC, addrD}) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } + + sig = abi.Methods["nestedArray2"].ID + sig = append(sig, common.LeftPadBytes([]byte{0x20}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{0x40}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{0x80}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + packed, err = abi.Pack("nestedArray2", [2][]uint8{{1}, {1}}) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } + + sig = abi.Methods["nestedSlice"].ID + sig = append(sig, common.LeftPadBytes([]byte{0x20}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{0x02}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{0x40}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{0xa0}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{1}, 32)...) + sig = append(sig, common.LeftPadBytes([]byte{2}, 32)...) + packed, err = abi.Pack("nestedSlice", [][]uint8{{1, 2}, {1, 2}}) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(packed, sig) { + t.Errorf("expected %x got %x", sig, packed) + } +} + +func TestPackNumber(t *testing.T) { + tests := []struct { + value reflect.Value + packed []byte + }{ + // Protocol limits + {reflect.ValueOf(0), common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000000")}, + {reflect.ValueOf(1), common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")}, + {reflect.ValueOf(-1), common.Hex2Bytes("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")}, + + // Type corner cases + {reflect.ValueOf(uint8(math.MaxUint8)), common.Hex2Bytes("00000000000000000000000000000000000000000000000000000000000000ff")}, + {reflect.ValueOf(uint16(math.MaxUint16)), common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000ffff")}, + {reflect.ValueOf(uint32(math.MaxUint32)), common.Hex2Bytes("00000000000000000000000000000000000000000000000000000000ffffffff")}, + {reflect.ValueOf(uint64(math.MaxUint64)), common.Hex2Bytes("000000000000000000000000000000000000000000000000ffffffffffffffff")}, + + {reflect.ValueOf(int8(math.MaxInt8)), common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000007f")}, + {reflect.ValueOf(int16(math.MaxInt16)), common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000007fff")}, + {reflect.ValueOf(int32(math.MaxInt32)), common.Hex2Bytes("000000000000000000000000000000000000000000000000000000007fffffff")}, + {reflect.ValueOf(int64(math.MaxInt64)), common.Hex2Bytes("0000000000000000000000000000000000000000000000007fffffffffffffff")}, + + {reflect.ValueOf(int8(math.MinInt8)), common.Hex2Bytes("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff80")}, + {reflect.ValueOf(int16(math.MinInt16)), common.Hex2Bytes("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff8000")}, + {reflect.ValueOf(int32(math.MinInt32)), common.Hex2Bytes("ffffffffffffffffffffffffffffffffffffffffffffffffffffffff80000000")}, + {reflect.ValueOf(int64(math.MinInt64)), common.Hex2Bytes("ffffffffffffffffffffffffffffffffffffffffffffffff8000000000000000")}, + } + for i, tt := range tests { + packed := packNum(tt.value) + if !bytes.Equal(packed, tt.packed) { + t.Errorf("test %d: pack mismatch: have %x, want %x", i, packed, tt.packed) + } + } +} diff --git a/accounts/abi/packing_test.go b/accounts/abi/packing_test.go new file mode 100644 index 0000000000..8e876dcaef --- /dev/null +++ b/accounts/abi/packing_test.go @@ -0,0 +1,1000 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +type packUnpackTest struct { + def string + unpacked interface{} + packed string +} + +var packUnpackTests = []packUnpackTest{ + // Booleans + { + def: `[{ "type": "bool" }]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: true, + }, + { + def: `[{ "type": "bool" }]`, + packed: "0000000000000000000000000000000000000000000000000000000000000000", + unpacked: false, + }, + // Integers + { + def: `[{ "type": "uint8" }]`, + unpacked: uint8(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{ "type": "uint8[]" }]`, + unpacked: []uint8{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{ "type": "uint16" }]`, + unpacked: uint16(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{ "type": "uint16[]" }]`, + unpacked: []uint16{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "uint17"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: big.NewInt(1), + }, + { + def: `[{"type": "uint32"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: uint32(1), + }, + { + def: `[{"type": "uint32[]"}]`, + unpacked: []uint32{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "uint64"}]`, + unpacked: uint64(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "uint64[]"}]`, + unpacked: []uint64{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "uint256"}]`, + unpacked: big.NewInt(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "uint256[]"}]`, + unpacked: []*big.Int{big.NewInt(1), big.NewInt(2)}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int8"}]`, + unpacked: int8(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int8[]"}]`, + unpacked: []int8{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int16"}]`, + unpacked: int16(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int16[]"}]`, + unpacked: []int16{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int17"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: big.NewInt(1), + }, + { + def: `[{"type": "int32"}]`, + unpacked: int32(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int32"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: int32(1), + }, + { + def: `[{"type": "int32[]"}]`, + unpacked: []int32{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int64"}]`, + unpacked: int64(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int64[]"}]`, + unpacked: []int64{1, 2}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int256"}]`, + unpacked: big.NewInt(2), + packed: "0000000000000000000000000000000000000000000000000000000000000002", + }, + { + def: `[{"type": "int256"}]`, + packed: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + unpacked: big.NewInt(-1), + }, + { + def: `[{"type": "int256[]"}]`, + unpacked: []*big.Int{big.NewInt(1), big.NewInt(2)}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + }, + // Address + { + def: `[{"type": "address"}]`, + packed: "0000000000000000000000000100000000000000000000000000000000000000", + unpacked: common.Address{1}, + }, + { + def: `[{"type": "address[]"}]`, + unpacked: []common.Address{{1}, {2}}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000100000000000000000000000000000000000000" + + "0000000000000000000000000200000000000000000000000000000000000000", + }, + // Bytes + { + def: `[{"type": "bytes1"}]`, + unpacked: [1]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes2"}]`, + unpacked: [2]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes3"}]`, + unpacked: [3]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes4"}]`, + unpacked: [4]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes5"}]`, + unpacked: [5]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes6"}]`, + unpacked: [6]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes7"}]`, + unpacked: [7]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes8"}]`, + unpacked: [8]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes9"}]`, + unpacked: [9]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes10"}]`, + unpacked: [10]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes11"}]`, + unpacked: [11]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes12"}]`, + unpacked: [12]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes13"}]`, + unpacked: [13]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes14"}]`, + unpacked: [14]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes15"}]`, + unpacked: [15]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes16"}]`, + unpacked: [16]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes17"}]`, + unpacked: [17]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes18"}]`, + unpacked: [18]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes19"}]`, + unpacked: [19]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes20"}]`, + unpacked: [20]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes21"}]`, + unpacked: [21]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes22"}]`, + unpacked: [22]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes23"}]`, + unpacked: [23]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes24"}]`, + unpacked: [24]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes25"}]`, + unpacked: [25]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes26"}]`, + unpacked: [26]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes27"}]`, + unpacked: [27]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes28"}]`, + unpacked: [28]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes29"}]`, + unpacked: [29]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes30"}]`, + unpacked: [30]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes31"}]`, + unpacked: [31]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes32"}]`, + unpacked: [32]byte{1}, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "bytes32"}]`, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + unpacked: [32]byte{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + }, + { + def: `[{"type": "bytes"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000020" + + "0100000000000000000000000000000000000000000000000000000000000000", + unpacked: common.Hex2Bytes("0100000000000000000000000000000000000000000000000000000000000000"), + }, + { + def: `[{"type": "bytes32"}]`, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + unpacked: [32]byte{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + }, + // Functions + { + def: `[{"type": "function"}]`, + packed: "0100000000000000000000000000000000000000000000000000000000000000", + unpacked: [24]byte{1}, + }, + // Slice and Array + { + def: `[{"type": "uint8[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []uint8{1, 2}, + }, + { + def: `[{"type": "uint8[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000000", + unpacked: []uint8{}, + }, + { + def: `[{"type": "uint256[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000000", + unpacked: []*big.Int{}, + }, + { + def: `[{"type": "uint8[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]uint8{1, 2}, + }, + { + def: `[{"type": "int8[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]int8{1, 2}, + }, + { + def: `[{"type": "int16[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []int16{1, 2}, + }, + { + def: `[{"type": "int16[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]int16{1, 2}, + }, + { + def: `[{"type": "int32[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []int32{1, 2}, + }, + { + def: `[{"type": "int32[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]int32{1, 2}, + }, + { + def: `[{"type": "int64[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []int64{1, 2}, + }, + { + def: `[{"type": "int64[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]int64{1, 2}, + }, + { + def: `[{"type": "int256[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []*big.Int{big.NewInt(1), big.NewInt(2)}, + }, + { + def: `[{"type": "int256[3]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000003", + unpacked: [3]*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)}, + }, + // multi dimensional, if these pass, all types that don't require length prefix should pass + { + def: `[{"type": "uint8[][]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000000", + unpacked: [][]uint8{}, + }, + { + def: `[{"type": "uint8[][]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000040" + + "00000000000000000000000000000000000000000000000000000000000000a0" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [][]uint8{{1, 2}, {1, 2}}, + }, + { + def: `[{"type": "uint8[][]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000040" + + "00000000000000000000000000000000000000000000000000000000000000a0" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000003" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000003", + unpacked: [][]uint8{{1, 2}, {1, 2, 3}}, + }, + { + def: `[{"type": "uint8[2][2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2][2]uint8{{1, 2}, {1, 2}}, + }, + { + def: `[{"type": "uint8[][2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000040" + + "0000000000000000000000000000000000000000000000000000000000000060" + + "0000000000000000000000000000000000000000000000000000000000000000" + + "0000000000000000000000000000000000000000000000000000000000000000", + unpacked: [2][]uint8{{}, {}}, + }, + { + def: `[{"type": "uint8[][2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000040" + + "0000000000000000000000000000000000000000000000000000000000000080" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: [2][]uint8{{1}, {1}}, + }, + { + def: `[{"type": "uint8[2][]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000000", + unpacked: [][2]uint8{}, + }, + { + def: `[{"type": "uint8[2][]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [][2]uint8{{1, 2}}, + }, + { + def: `[{"type": "uint8[2][]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [][2]uint8{{1, 2}, {1, 2}}, + }, + { + def: `[{"type": "uint16[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []uint16{1, 2}, + }, + { + def: `[{"type": "uint16[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]uint16{1, 2}, + }, + { + def: `[{"type": "uint32[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []uint32{1, 2}, + }, + { + def: `[{"type": "uint32[2][3][4]"}]`, + unpacked: [4][3][2]uint32{{{1, 2}, {3, 4}, {5, 6}}, {{7, 8}, {9, 10}, {11, 12}}, {{13, 14}, {15, 16}, {17, 18}}, {{19, 20}, {21, 22}, {23, 24}}}, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000003" + + "0000000000000000000000000000000000000000000000000000000000000004" + + "0000000000000000000000000000000000000000000000000000000000000005" + + "0000000000000000000000000000000000000000000000000000000000000006" + + "0000000000000000000000000000000000000000000000000000000000000007" + + "0000000000000000000000000000000000000000000000000000000000000008" + + "0000000000000000000000000000000000000000000000000000000000000009" + + "000000000000000000000000000000000000000000000000000000000000000a" + + "000000000000000000000000000000000000000000000000000000000000000b" + + "000000000000000000000000000000000000000000000000000000000000000c" + + "000000000000000000000000000000000000000000000000000000000000000d" + + "000000000000000000000000000000000000000000000000000000000000000e" + + "000000000000000000000000000000000000000000000000000000000000000f" + + "0000000000000000000000000000000000000000000000000000000000000010" + + "0000000000000000000000000000000000000000000000000000000000000011" + + "0000000000000000000000000000000000000000000000000000000000000012" + + "0000000000000000000000000000000000000000000000000000000000000013" + + "0000000000000000000000000000000000000000000000000000000000000014" + + "0000000000000000000000000000000000000000000000000000000000000015" + + "0000000000000000000000000000000000000000000000000000000000000016" + + "0000000000000000000000000000000000000000000000000000000000000017" + + "0000000000000000000000000000000000000000000000000000000000000018", + }, + + { + def: `[{"type": "bytes32[]"}]`, + unpacked: [][32]byte{{1}, {2}}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0100000000000000000000000000000000000000000000000000000000000000" + + "0200000000000000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "uint32[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]uint32{1, 2}, + }, + { + def: `[{"type": "uint64[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []uint64{1, 2}, + }, + { + def: `[{"type": "uint64[2]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: [2]uint64{1, 2}, + }, + { + def: `[{"type": "uint256[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: []*big.Int{big.NewInt(1), big.NewInt(2)}, + }, + { + def: `[{"type": "uint256[3]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000003", + unpacked: [3]*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)}, + }, + { + def: `[{"type": "string[4]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000080" + + "00000000000000000000000000000000000000000000000000000000000000c0" + + "0000000000000000000000000000000000000000000000000000000000000100" + + "0000000000000000000000000000000000000000000000000000000000000140" + + "0000000000000000000000000000000000000000000000000000000000000005" + + "48656c6c6f000000000000000000000000000000000000000000000000000000" + + "0000000000000000000000000000000000000000000000000000000000000005" + + "576f726c64000000000000000000000000000000000000000000000000000000" + + "000000000000000000000000000000000000000000000000000000000000000b" + + "476f2d657468657265756d000000000000000000000000000000000000000000" + + "0000000000000000000000000000000000000000000000000000000000000008" + + "457468657265756d000000000000000000000000000000000000000000000000", + unpacked: [4]string{"Hello", "World", "Go-ethereum", "Ethereum"}, + }, + { + def: `[{"type": "string[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000040" + + "0000000000000000000000000000000000000000000000000000000000000080" + + "0000000000000000000000000000000000000000000000000000000000000008" + + "457468657265756d000000000000000000000000000000000000000000000000" + + "000000000000000000000000000000000000000000000000000000000000000b" + + "676f2d657468657265756d000000000000000000000000000000000000000000", + unpacked: []string{"Ethereum", "go-ethereum"}, + }, + { + def: `[{"type": "bytes[]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000040" + + "0000000000000000000000000000000000000000000000000000000000000080" + + "0000000000000000000000000000000000000000000000000000000000000003" + + "f0f0f00000000000000000000000000000000000000000000000000000000000" + + "0000000000000000000000000000000000000000000000000000000000000003" + + "f0f0f00000000000000000000000000000000000000000000000000000000000", + unpacked: [][]byte{{0xf0, 0xf0, 0xf0}, {0xf0, 0xf0, 0xf0}}, + }, + { + def: `[{"type": "uint256[2][][]"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000040" + + "00000000000000000000000000000000000000000000000000000000000000e0" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "00000000000000000000000000000000000000000000000000000000000000c8" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "00000000000000000000000000000000000000000000000000000000000003e8" + + "0000000000000000000000000000000000000000000000000000000000000002" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "00000000000000000000000000000000000000000000000000000000000000c8" + + "0000000000000000000000000000000000000000000000000000000000000001" + + "00000000000000000000000000000000000000000000000000000000000003e8", + unpacked: [][][2]*big.Int{{{big.NewInt(1), big.NewInt(200)}, {big.NewInt(1), big.NewInt(1000)}}, {{big.NewInt(1), big.NewInt(200)}, {big.NewInt(1), big.NewInt(1000)}}}, + }, + // struct outputs + { + def: `[{"components": [{"name":"int1","type":"int256"},{"name":"int2","type":"int256"}], "type":"tuple"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: struct { + Int1 *big.Int + Int2 *big.Int + }{big.NewInt(1), big.NewInt(2)}, + }, + { + def: `[{"components": [{"name":"int_one","type":"int256"}], "type":"tuple"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: struct { + IntOne *big.Int + }{big.NewInt(1)}, + }, + { + def: `[{"components": [{"name":"int__one","type":"int256"}], "type":"tuple"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: struct { + IntOne *big.Int + }{big.NewInt(1)}, + }, + { + def: `[{"components": [{"name":"int_one_","type":"int256"}], "type":"tuple"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001", + unpacked: struct { + IntOne *big.Int + }{big.NewInt(1)}, + }, + { + def: `[{"components": [{"name":"int_one","type":"int256"}, {"name":"intone","type":"int256"}], "type":"tuple"}]`, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + + "0000000000000000000000000000000000000000000000000000000000000002", + unpacked: struct { + IntOne *big.Int + Intone *big.Int + }{big.NewInt(1), big.NewInt(2)}, + }, + { + def: `[{"type": "string"}]`, + unpacked: "foobar", + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000006" + + "666f6f6261720000000000000000000000000000000000000000000000000000", + }, + { + def: `[{"type": "string[]"}]`, + unpacked: []string{"hello", "foobar"}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + // len(array) = 2 + "0000000000000000000000000000000000000000000000000000000000000040" + // offset 64 to i = 0 + "0000000000000000000000000000000000000000000000000000000000000080" + // offset 128 to i = 1 + "0000000000000000000000000000000000000000000000000000000000000005" + // len(str[0]) = 5 + "68656c6c6f000000000000000000000000000000000000000000000000000000" + // str[0] + "0000000000000000000000000000000000000000000000000000000000000006" + // len(str[1]) = 6 + "666f6f6261720000000000000000000000000000000000000000000000000000", // str[1] + }, + { + def: `[{"type": "string[2]"}]`, + unpacked: [2]string{"hello", "foobar"}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000040" + // offset to i = 0 + "0000000000000000000000000000000000000000000000000000000000000080" + // offset to i = 1 + "0000000000000000000000000000000000000000000000000000000000000005" + // len(str[0]) = 5 + "68656c6c6f000000000000000000000000000000000000000000000000000000" + // str[0] + "0000000000000000000000000000000000000000000000000000000000000006" + // len(str[1]) = 6 + "666f6f6261720000000000000000000000000000000000000000000000000000", // str[1] + }, + { + def: `[{"type": "bytes32[][]"}]`, + unpacked: [][][32]byte{{{1}, {2}}, {{3}, {4}, {5}}}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + // len(array) = 2 + "0000000000000000000000000000000000000000000000000000000000000040" + // offset 64 to i = 0 + "00000000000000000000000000000000000000000000000000000000000000a0" + // offset 160 to i = 1 + "0000000000000000000000000000000000000000000000000000000000000002" + // len(array[0]) = 2 + "0100000000000000000000000000000000000000000000000000000000000000" + // array[0][0] + "0200000000000000000000000000000000000000000000000000000000000000" + // array[0][1] + "0000000000000000000000000000000000000000000000000000000000000003" + // len(array[1]) = 3 + "0300000000000000000000000000000000000000000000000000000000000000" + // array[1][0] + "0400000000000000000000000000000000000000000000000000000000000000" + // array[1][1] + "0500000000000000000000000000000000000000000000000000000000000000", // array[1][2] + }, + { + def: `[{"type": "bytes32[][2]"}]`, + unpacked: [2][][32]byte{{{1}, {2}}, {{3}, {4}, {5}}}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000040" + // offset 64 to i = 0 + "00000000000000000000000000000000000000000000000000000000000000a0" + // offset 160 to i = 1 + "0000000000000000000000000000000000000000000000000000000000000002" + // len(array[0]) = 2 + "0100000000000000000000000000000000000000000000000000000000000000" + // array[0][0] + "0200000000000000000000000000000000000000000000000000000000000000" + // array[0][1] + "0000000000000000000000000000000000000000000000000000000000000003" + // len(array[1]) = 3 + "0300000000000000000000000000000000000000000000000000000000000000" + // array[1][0] + "0400000000000000000000000000000000000000000000000000000000000000" + // array[1][1] + "0500000000000000000000000000000000000000000000000000000000000000", // array[1][2] + }, + { + def: `[{"type": "bytes32[3][2]"}]`, + unpacked: [2][3][32]byte{{{1}, {2}, {3}}, {{3}, {4}, {5}}}, + packed: "0100000000000000000000000000000000000000000000000000000000000000" + // array[0][0] + "0200000000000000000000000000000000000000000000000000000000000000" + // array[0][1] + "0300000000000000000000000000000000000000000000000000000000000000" + // array[0][2] + "0300000000000000000000000000000000000000000000000000000000000000" + // array[1][0] + "0400000000000000000000000000000000000000000000000000000000000000" + // array[1][1] + "0500000000000000000000000000000000000000000000000000000000000000", // array[1][2] + }, + { + // static tuple + def: `[{"components": [{"name":"a","type":"int64"}, + {"name":"b","type":"int256"}, + {"name":"c","type":"int256"}, + {"name":"d","type":"bool"}, + {"name":"e","type":"bytes32[3][2]"}], "type":"tuple"}]`, + unpacked: struct { + A int64 + B *big.Int + C *big.Int + D bool + E [2][3][32]byte + }{1, big.NewInt(1), big.NewInt(-1), true, [2][3][32]byte{{{1}, {2}, {3}}, {{3}, {4}, {5}}}}, + packed: "0000000000000000000000000000000000000000000000000000000000000001" + // struct[a] + "0000000000000000000000000000000000000000000000000000000000000001" + // struct[b] + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" + // struct[c] + "0000000000000000000000000000000000000000000000000000000000000001" + // struct[d] + "0100000000000000000000000000000000000000000000000000000000000000" + // struct[e] array[0][0] + "0200000000000000000000000000000000000000000000000000000000000000" + // struct[e] array[0][1] + "0300000000000000000000000000000000000000000000000000000000000000" + // struct[e] array[0][2] + "0300000000000000000000000000000000000000000000000000000000000000" + // struct[e] array[1][0] + "0400000000000000000000000000000000000000000000000000000000000000" + // struct[e] array[1][1] + "0500000000000000000000000000000000000000000000000000000000000000", // struct[e] array[1][2] + }, + { + def: `[{"components": [{"name":"a","type":"string"}, + {"name":"b","type":"int64"}, + {"name":"c","type":"bytes"}, + {"name":"d","type":"string[]"}, + {"name":"e","type":"int256[]"}, + {"name":"f","type":"address[]"}], "type":"tuple"}]`, + unpacked: struct { + A string + B int64 + C []byte + D []string + E []*big.Int + F []common.Address + }{"foobar", 1, []byte{1}, []string{"foo", "bar"}, []*big.Int{big.NewInt(1), big.NewInt(-1)}, []common.Address{{1}, {2}}}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + // struct a + "00000000000000000000000000000000000000000000000000000000000000c0" + // struct[a] offset + "0000000000000000000000000000000000000000000000000000000000000001" + // struct[b] + "0000000000000000000000000000000000000000000000000000000000000100" + // struct[c] offset + "0000000000000000000000000000000000000000000000000000000000000140" + // struct[d] offset + "0000000000000000000000000000000000000000000000000000000000000220" + // struct[e] offset + "0000000000000000000000000000000000000000000000000000000000000280" + // struct[f] offset + "0000000000000000000000000000000000000000000000000000000000000006" + // struct[a] length + "666f6f6261720000000000000000000000000000000000000000000000000000" + // struct[a] "foobar" + "0000000000000000000000000000000000000000000000000000000000000001" + // struct[c] length + "0100000000000000000000000000000000000000000000000000000000000000" + // []byte{1} + "0000000000000000000000000000000000000000000000000000000000000002" + // struct[d] length + "0000000000000000000000000000000000000000000000000000000000000040" + // foo offset + "0000000000000000000000000000000000000000000000000000000000000080" + // bar offset + "0000000000000000000000000000000000000000000000000000000000000003" + // foo length + "666f6f0000000000000000000000000000000000000000000000000000000000" + // foo + "0000000000000000000000000000000000000000000000000000000000000003" + // bar offset + "6261720000000000000000000000000000000000000000000000000000000000" + // bar + "0000000000000000000000000000000000000000000000000000000000000002" + // struct[e] length + "0000000000000000000000000000000000000000000000000000000000000001" + // 1 + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" + // -1 + "0000000000000000000000000000000000000000000000000000000000000002" + // struct[f] length + "0000000000000000000000000100000000000000000000000000000000000000" + // common.Address{1} + "0000000000000000000000000200000000000000000000000000000000000000", // common.Address{2} + }, + { + def: `[{"components": [{ "type": "tuple","components": [{"name": "a","type": "uint256"}, + {"name": "b","type": "uint256[]"}], + "name": "a","type": "tuple"}, + {"name": "b","type": "uint256[]"}], "type": "tuple"}]`, + unpacked: struct { + A struct { + A *big.Int + B []*big.Int + } + B []*big.Int + }{ + A: struct { + A *big.Int + B []*big.Int + }{big.NewInt(1), []*big.Int{big.NewInt(1), big.NewInt(2)}}, + B: []*big.Int{big.NewInt(1), big.NewInt(2)}}, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + // struct a + "0000000000000000000000000000000000000000000000000000000000000040" + // a offset + "00000000000000000000000000000000000000000000000000000000000000e0" + // b offset + "0000000000000000000000000000000000000000000000000000000000000001" + // a.a value + "0000000000000000000000000000000000000000000000000000000000000040" + // a.b offset + "0000000000000000000000000000000000000000000000000000000000000002" + // a.b length + "0000000000000000000000000000000000000000000000000000000000000001" + // a.b[0] value + "0000000000000000000000000000000000000000000000000000000000000002" + // a.b[1] value + "0000000000000000000000000000000000000000000000000000000000000002" + // b length + "0000000000000000000000000000000000000000000000000000000000000001" + // b[0] value + "0000000000000000000000000000000000000000000000000000000000000002", // b[1] value + }, + + { + def: `[{"components": [{"name": "a","type": "int256"}, + {"name": "b","type": "int256[]"}], + "name": "a","type": "tuple[]"}]`, + unpacked: []struct { + A *big.Int + B []*big.Int + }{ + {big.NewInt(-1), []*big.Int{big.NewInt(1), big.NewInt(3)}}, + {big.NewInt(1), []*big.Int{big.NewInt(2), big.NewInt(-1)}}, + }, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000002" + // tuple length + "0000000000000000000000000000000000000000000000000000000000000040" + // tuple[0] offset + "00000000000000000000000000000000000000000000000000000000000000e0" + // tuple[1] offset + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" + // tuple[0].A + "0000000000000000000000000000000000000000000000000000000000000040" + // tuple[0].B offset + "0000000000000000000000000000000000000000000000000000000000000002" + // tuple[0].B length + "0000000000000000000000000000000000000000000000000000000000000001" + // tuple[0].B[0] value + "0000000000000000000000000000000000000000000000000000000000000003" + // tuple[0].B[1] value + "0000000000000000000000000000000000000000000000000000000000000001" + // tuple[1].A + "0000000000000000000000000000000000000000000000000000000000000040" + // tuple[1].B offset + "0000000000000000000000000000000000000000000000000000000000000002" + // tuple[1].B length + "0000000000000000000000000000000000000000000000000000000000000002" + // tuple[1].B[0] value + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // tuple[1].B[1] value + }, + { + def: `[{"components": [{"name": "a","type": "int256"}, + {"name": "b","type": "int256"}], + "name": "a","type": "tuple[2]"}]`, + unpacked: [2]struct { + A *big.Int + B *big.Int + }{ + {big.NewInt(-1), big.NewInt(1)}, + {big.NewInt(1), big.NewInt(-1)}, + }, + packed: "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" + // tuple[0].a + "0000000000000000000000000000000000000000000000000000000000000001" + // tuple[0].b + "0000000000000000000000000000000000000000000000000000000000000001" + // tuple[1].a + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // tuple[1].b + }, + { + def: `[{"components": [{"name": "a","type": "int256[]"}], + "name": "a","type": "tuple[2]"}]`, + unpacked: [2]struct { + A []*big.Int + }{ + {[]*big.Int{big.NewInt(-1), big.NewInt(1)}}, + {[]*big.Int{big.NewInt(1), big.NewInt(-1)}}, + }, + packed: "0000000000000000000000000000000000000000000000000000000000000020" + + "0000000000000000000000000000000000000000000000000000000000000040" + // tuple[0] offset + "00000000000000000000000000000000000000000000000000000000000000c0" + // tuple[1] offset + "0000000000000000000000000000000000000000000000000000000000000020" + // tuple[0].A offset + "0000000000000000000000000000000000000000000000000000000000000002" + // tuple[0].A length + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" + // tuple[0].A[0] + "0000000000000000000000000000000000000000000000000000000000000001" + // tuple[0].A[1] + "0000000000000000000000000000000000000000000000000000000000000020" + // tuple[1].A offset + "0000000000000000000000000000000000000000000000000000000000000002" + // tuple[1].A length + "0000000000000000000000000000000000000000000000000000000000000001" + // tuple[1].A[0] + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // tuple[1].A[1] + }, +} diff --git a/accounts/abi/reflect.go b/accounts/abi/reflect.go new file mode 100644 index 0000000000..19578d570f --- /dev/null +++ b/accounts/abi/reflect.go @@ -0,0 +1,270 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "errors" + "fmt" + "math/big" + "reflect" + "strings" +) + +// ConvertType converts an interface of a runtime type into a interface of the +// given type +// e.g. turn +// var fields []reflect.StructField +// fields = append(fields, reflect.StructField{ +// Name: "X", +// Type: reflect.TypeOf(new(big.Int)), +// Tag: reflect.StructTag("json:\"" + "x" + "\""), +// } +// into +// type TupleT struct { X *big.Int } +func ConvertType(in interface{}, proto interface{}) interface{} { + protoType := reflect.TypeOf(proto) + if reflect.TypeOf(in).ConvertibleTo(protoType) { + return reflect.ValueOf(in).Convert(protoType).Interface() + } + // Use set as a last ditch effort + if err := set(reflect.ValueOf(proto), reflect.ValueOf(in)); err != nil { + panic(err) + } + return proto +} + +// indirect recursively dereferences the value until it either gets the value +// or finds a big.Int +func indirect(v reflect.Value) reflect.Value { + if v.Kind() == reflect.Ptr && v.Elem().Type() != reflect.TypeOf(big.Int{}) { + return indirect(v.Elem()) + } + return v +} + +// reflectIntType returns the reflect using the given size and +// unsignedness. +func reflectIntType(unsigned bool, size int) reflect.Type { + if unsigned { + switch size { + case 8: + return reflect.TypeOf(uint8(0)) + case 16: + return reflect.TypeOf(uint16(0)) + case 32: + return reflect.TypeOf(uint32(0)) + case 64: + return reflect.TypeOf(uint64(0)) + } + } + switch size { + case 8: + return reflect.TypeOf(int8(0)) + case 16: + return reflect.TypeOf(int16(0)) + case 32: + return reflect.TypeOf(int32(0)) + case 64: + return reflect.TypeOf(int64(0)) + } + return reflect.TypeOf(&big.Int{}) +} + +// mustArrayToByteSlice creates a new byte slice with the exact same size as value +// and copies the bytes in value to the new slice. +func mustArrayToByteSlice(value reflect.Value) reflect.Value { + slice := reflect.MakeSlice(reflect.TypeOf([]byte{}), value.Len(), value.Len()) + reflect.Copy(slice, value) + return slice +} + +// set attempts to assign src to dst by either setting, copying or otherwise. +// +// set is a bit more lenient when it comes to assignment and doesn't force an as +// strict ruleset as bare `reflect` does. +func set(dst, src reflect.Value) error { + dstType, srcType := dst.Type(), src.Type() + switch { + case dstType.Kind() == reflect.Interface && dst.Elem().IsValid(): + return set(dst.Elem(), src) + case dstType.Kind() == reflect.Ptr && dstType.Elem() != reflect.TypeOf(big.Int{}): + return set(dst.Elem(), src) + case srcType.AssignableTo(dstType) && dst.CanSet(): + dst.Set(src) + case dstType.Kind() == reflect.Slice && srcType.Kind() == reflect.Slice && dst.CanSet(): + return setSlice(dst, src) + case dstType.Kind() == reflect.Array: + return setArray(dst, src) + case dstType.Kind() == reflect.Struct: + return setStruct(dst, src) + default: + return fmt.Errorf("abi: cannot unmarshal %v in to %v", src.Type(), dst.Type()) + } + return nil +} + +// setSlice attempts to assign src to dst when slices are not assignable by default +// e.g. src: [][]byte -> dst: [][15]byte +// setSlice ignores if we cannot copy all of src' elements. +func setSlice(dst, src reflect.Value) error { + slice := reflect.MakeSlice(dst.Type(), src.Len(), src.Len()) + for i := 0; i < src.Len(); i++ { + if err := set(slice.Index(i), src.Index(i)); err != nil { + return err + } + } + if dst.CanSet() { + dst.Set(slice) + return nil + } + return errors.New("Cannot set slice, destination not settable") +} + +func setArray(dst, src reflect.Value) error { + if src.Kind() == reflect.Ptr { + return set(dst, indirect(src)) + } + array := reflect.New(dst.Type()).Elem() + min := src.Len() + if src.Len() > dst.Len() { + min = dst.Len() + } + for i := 0; i < min; i++ { + if err := set(array.Index(i), src.Index(i)); err != nil { + return err + } + } + if dst.CanSet() { + dst.Set(array) + return nil + } + return errors.New("Cannot set array, destination not settable") +} + +func setStruct(dst, src reflect.Value) error { + for i := 0; i < src.NumField(); i++ { + srcField := src.Field(i) + dstField := dst.Field(i) + if !dstField.IsValid() || !srcField.IsValid() { + return fmt.Errorf("Could not find src field: %v value: %v in destination", srcField.Type().Name(), srcField) + } + if err := set(dstField, srcField); err != nil { + return err + } + } + return nil +} + +// mapArgNamesToStructFields maps a slice of argument names to struct fields. +// first round: for each Exportable field that contains a `abi:""` tag +// and this field name exists in the given argument name list, pair them together. +// second round: for each argument name that has not been already linked, +// find what variable is expected to be mapped into, if it exists and has not been +// used, pair them. +// Note this function assumes the given value is a struct value. +func mapArgNamesToStructFields(argNames []string, value reflect.Value) (map[string]string, error) { + typ := value.Type() + + abi2struct := make(map[string]string) + struct2abi := make(map[string]string) + + // first round ~~~ + for i := 0; i < typ.NumField(); i++ { + structFieldName := typ.Field(i).Name + + // skip private struct fields. + if structFieldName[:1] != strings.ToUpper(structFieldName[:1]) { + continue + } + // skip fields that have no abi:"" tag. + tagName, ok := typ.Field(i).Tag.Lookup("abi") + if !ok { + continue + } + // check if tag is empty. + if tagName == "" { + return nil, fmt.Errorf("struct: abi tag in '%s' is empty", structFieldName) + } + // check which argument field matches with the abi tag. + found := false + for _, arg := range argNames { + if arg == tagName { + if abi2struct[arg] != "" { + return nil, fmt.Errorf("struct: abi tag in '%s' already mapped", structFieldName) + } + // pair them + abi2struct[arg] = structFieldName + struct2abi[structFieldName] = arg + found = true + } + } + // check if this tag has been mapped. + if !found { + return nil, fmt.Errorf("struct: abi tag '%s' defined but not found in abi", tagName) + } + } + + // second round ~~~ + for _, argName := range argNames { + + structFieldName := ToCamelCase(argName) + + if structFieldName == "" { + return nil, fmt.Errorf("abi: purely underscored output cannot unpack to struct") + } + + // this abi has already been paired, skip it... unless there exists another, yet unassigned + // struct field with the same field name. If so, raise an error: + // abi: [ { "name": "value" } ] + // struct { Value *big.Int , Value1 *big.Int `abi:"value"`} + if abi2struct[argName] != "" { + if abi2struct[argName] != structFieldName && + struct2abi[structFieldName] == "" && + value.FieldByName(structFieldName).IsValid() { + return nil, fmt.Errorf("abi: multiple variables maps to the same abi field '%s'", argName) + } + continue + } + + // return an error if this struct field has already been paired. + if struct2abi[structFieldName] != "" { + return nil, fmt.Errorf("abi: multiple outputs mapping to the same struct field '%s'", structFieldName) + } + + if value.FieldByName(structFieldName).IsValid() { + // pair them + abi2struct[argName] = structFieldName + struct2abi[structFieldName] = argName + } else { + // not paired, but annotate as used, to detect cases like + // abi : [ { "name": "value" }, { "name": "_value" } ] + // struct { Value *big.Int } + struct2abi[structFieldName] = argName + } + } + return abi2struct, nil +} diff --git a/accounts/abi/reflect_test.go b/accounts/abi/reflect_test.go new file mode 100644 index 0000000000..2754fea638 --- /dev/null +++ b/accounts/abi/reflect_test.go @@ -0,0 +1,271 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "math/big" + "reflect" + "testing" +) + +type reflectTest struct { + name string + args []string + struc interface{} + want map[string]string + err string +} + +var reflectTests = []reflectTest{ + { + name: "OneToOneCorrespondance", + args: []string{"fieldA"}, + struc: struct { + FieldA int `abi:"fieldA"` + }{}, + want: map[string]string{ + "fieldA": "FieldA", + }, + }, + { + name: "MissingFieldsInStruct", + args: []string{"fieldA", "fieldB"}, + struc: struct { + FieldA int `abi:"fieldA"` + }{}, + want: map[string]string{ + "fieldA": "FieldA", + }, + }, + { + name: "MoreFieldsInStructThanArgs", + args: []string{"fieldA"}, + struc: struct { + FieldA int `abi:"fieldA"` + FieldB int + }{}, + want: map[string]string{ + "fieldA": "FieldA", + }, + }, + { + name: "MissingFieldInArgs", + args: []string{"fieldA"}, + struc: struct { + FieldA int `abi:"fieldA"` + FieldB int `abi:"fieldB"` + }{}, + err: "struct: abi tag 'fieldB' defined but not found in abi", + }, + { + name: "NoAbiDescriptor", + args: []string{"fieldA"}, + struc: struct { + FieldA int + }{}, + want: map[string]string{ + "fieldA": "FieldA", + }, + }, + { + name: "NoArgs", + args: []string{}, + struc: struct { + FieldA int `abi:"fieldA"` + }{}, + err: "struct: abi tag 'fieldA' defined but not found in abi", + }, + { + name: "DifferentName", + args: []string{"fieldB"}, + struc: struct { + FieldA int `abi:"fieldB"` + }{}, + want: map[string]string{ + "fieldB": "FieldA", + }, + }, + { + name: "DifferentName", + args: []string{"fieldB"}, + struc: struct { + FieldA int `abi:"fieldB"` + }{}, + want: map[string]string{ + "fieldB": "FieldA", + }, + }, + { + name: "MultipleFields", + args: []string{"fieldA", "fieldB"}, + struc: struct { + FieldA int `abi:"fieldA"` + FieldB int `abi:"fieldB"` + }{}, + want: map[string]string{ + "fieldA": "FieldA", + "fieldB": "FieldB", + }, + }, + { + name: "MultipleFieldsABIMissing", + args: []string{"fieldA", "fieldB"}, + struc: struct { + FieldA int `abi:"fieldA"` + FieldB int + }{}, + want: map[string]string{ + "fieldA": "FieldA", + "fieldB": "FieldB", + }, + }, + { + name: "NameConflict", + args: []string{"fieldB"}, + struc: struct { + FieldA int `abi:"fieldB"` + FieldB int + }{}, + err: "abi: multiple variables maps to the same abi field 'fieldB'", + }, + { + name: "Underscored", + args: []string{"_"}, + struc: struct { + FieldA int + }{}, + err: "abi: purely underscored output cannot unpack to struct", + }, + { + name: "DoubleMapping", + args: []string{"fieldB", "fieldC", "fieldA"}, + struc: struct { + FieldA int `abi:"fieldC"` + FieldB int + }{}, + err: "abi: multiple outputs mapping to the same struct field 'FieldA'", + }, + { + name: "AlreadyMapped", + args: []string{"fieldB", "fieldB"}, + struc: struct { + FieldB int `abi:"fieldB"` + }{}, + err: "struct: abi tag in 'FieldB' already mapped", + }, +} + +func TestReflectNameToStruct(t *testing.T) { + for _, test := range reflectTests { + t.Run(test.name, func(t *testing.T) { + m, err := mapArgNamesToStructFields(test.args, reflect.ValueOf(test.struc)) + if len(test.err) > 0 { + if err == nil || err.Error() != test.err { + t.Fatalf("Invalid error: expected %v, got %v", test.err, err) + } + } else { + if err != nil { + t.Fatalf("Unexpected error: %v", err) + } + for fname := range test.want { + if m[fname] != test.want[fname] { + t.Fatalf("Incorrect value for field %s: expected %v, got %v", fname, test.want[fname], m[fname]) + } + } + } + }) + } +} + +func TestConvertType(t *testing.T) { + // Test Basic Struct + type T struct { + X *big.Int + Y *big.Int + } + // Create on-the-fly structure + var fields []reflect.StructField + fields = append(fields, reflect.StructField{ + Name: "X", + Type: reflect.TypeOf(new(big.Int)), + Tag: "json:\"" + "x" + "\"", + }) + fields = append(fields, reflect.StructField{ + Name: "Y", + Type: reflect.TypeOf(new(big.Int)), + Tag: "json:\"" + "y" + "\"", + }) + val := reflect.New(reflect.StructOf(fields)) + val.Elem().Field(0).Set(reflect.ValueOf(big.NewInt(1))) + val.Elem().Field(1).Set(reflect.ValueOf(big.NewInt(2))) + // ConvertType + out := *ConvertType(val.Interface(), new(T)).(*T) + if out.X.Cmp(big.NewInt(1)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out.X, big.NewInt(1)) + } + if out.Y.Cmp(big.NewInt(2)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out.Y, big.NewInt(2)) + } + // Slice Type + val2 := reflect.MakeSlice(reflect.SliceOf(reflect.StructOf(fields)), 2, 2) + val2.Index(0).Field(0).Set(reflect.ValueOf(big.NewInt(1))) + val2.Index(0).Field(1).Set(reflect.ValueOf(big.NewInt(2))) + val2.Index(1).Field(0).Set(reflect.ValueOf(big.NewInt(3))) + val2.Index(1).Field(1).Set(reflect.ValueOf(big.NewInt(4))) + out2 := *ConvertType(val2.Interface(), new([]T)).(*[]T) + if out2[0].X.Cmp(big.NewInt(1)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out2[0].X, big.NewInt(1)) + } + if out2[0].Y.Cmp(big.NewInt(2)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out2[1].Y, big.NewInt(2)) + } + if out2[1].X.Cmp(big.NewInt(3)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out2[0].X, big.NewInt(1)) + } + if out2[1].Y.Cmp(big.NewInt(4)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out2[1].Y, big.NewInt(2)) + } + // Array Type + val3 := reflect.New(reflect.ArrayOf(2, reflect.StructOf(fields))) + val3.Elem().Index(0).Field(0).Set(reflect.ValueOf(big.NewInt(1))) + val3.Elem().Index(0).Field(1).Set(reflect.ValueOf(big.NewInt(2))) + val3.Elem().Index(1).Field(0).Set(reflect.ValueOf(big.NewInt(3))) + val3.Elem().Index(1).Field(1).Set(reflect.ValueOf(big.NewInt(4))) + out3 := *ConvertType(val3.Interface(), new([2]T)).(*[2]T) + if out3[0].X.Cmp(big.NewInt(1)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out3[0].X, big.NewInt(1)) + } + if out3[0].Y.Cmp(big.NewInt(2)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out3[1].Y, big.NewInt(2)) + } + if out3[1].X.Cmp(big.NewInt(3)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out3[0].X, big.NewInt(1)) + } + if out3[1].Y.Cmp(big.NewInt(4)) != 0 { + t.Errorf("ConvertType failed, got %v want %v", out3[1].Y, big.NewInt(2)) + } +} diff --git a/accounts/abi/topics.go b/accounts/abi/topics.go new file mode 100644 index 0000000000..5fe7071b66 --- /dev/null +++ b/accounts/abi/topics.go @@ -0,0 +1,183 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "encoding/binary" + "errors" + "fmt" + "math/big" + "reflect" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +// MakeTopics converts a filter query argument list into a filter topic set. +func MakeTopics(query ...[]interface{}) ([][]common.Hash, error) { + topics := make([][]common.Hash, len(query)) + for i, filter := range query { + for _, rule := range filter { + var topic common.Hash + + // Try to generate the topic based on simple types + switch rule := rule.(type) { + case common.Hash: + copy(topic[:], rule[:]) + case common.Address: + copy(topic[common.HashLength-common.AddressLength:], rule[:]) + case *big.Int: + blob := rule.Bytes() + copy(topic[common.HashLength-len(blob):], blob) + case bool: + if rule { + topic[common.HashLength-1] = 1 + } + case int8: + copy(topic[:], genIntType(int64(rule), 1)) + case int16: + copy(topic[:], genIntType(int64(rule), 2)) + case int32: + copy(topic[:], genIntType(int64(rule), 4)) + case int64: + copy(topic[:], genIntType(rule, 8)) + case uint8: + blob := new(big.Int).SetUint64(uint64(rule)).Bytes() + copy(topic[common.HashLength-len(blob):], blob) + case uint16: + blob := new(big.Int).SetUint64(uint64(rule)).Bytes() + copy(topic[common.HashLength-len(blob):], blob) + case uint32: + blob := new(big.Int).SetUint64(uint64(rule)).Bytes() + copy(topic[common.HashLength-len(blob):], blob) + case uint64: + blob := new(big.Int).SetUint64(rule).Bytes() + copy(topic[common.HashLength-len(blob):], blob) + case string: + hash := crypto.Keccak256Hash([]byte(rule)) + copy(topic[:], hash[:]) + case []byte: + hash := crypto.Keccak256Hash(rule) + copy(topic[:], hash[:]) + + default: + // todo(rjl493456442) according solidity documentation, indexed event + // parameters that are not value types i.e. arrays and structs are not + // stored directly but instead a keccak256-hash of an encoding is stored. + // + // We only convert stringS and bytes to hash, still need to deal with + // array(both fixed-size and dynamic-size) and struct. + + // Attempt to generate the topic from funky types + val := reflect.ValueOf(rule) + switch { + // static byte array + case val.Kind() == reflect.Array && reflect.TypeOf(rule).Elem().Kind() == reflect.Uint8: + reflect.Copy(reflect.ValueOf(topic[:val.Len()]), val) + default: + return nil, fmt.Errorf("unsupported indexed type: %T", rule) + } + } + topics[i] = append(topics[i], topic) + } + } + return topics, nil +} + +func genIntType(rule int64, size uint) []byte { + var topic [common.HashLength]byte + if rule < 0 { + // if a rule is negative, we need to put it into two's complement. + // extended to common.HashLength bytes. + topic = [common.HashLength]byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255} + } + for i := uint(0); i < size; i++ { + topic[common.HashLength-i-1] = byte(rule >> (i * 8)) + } + return topic[:] +} + +// ParseTopics converts the indexed topic fields into actual log field values. +func ParseTopics(out interface{}, fields Arguments, topics []common.Hash) error { + return parseTopicWithSetter(fields, topics, + func(arg Argument, reconstr interface{}) { + field := reflect.ValueOf(out).Elem().FieldByName(ToCamelCase(arg.Name)) + field.Set(reflect.ValueOf(reconstr)) + }) +} + +// ParseTopicsIntoMap converts the indexed topic field-value pairs into map key-value pairs. +func ParseTopicsIntoMap(out map[string]interface{}, fields Arguments, topics []common.Hash) error { + return parseTopicWithSetter(fields, topics, + func(arg Argument, reconstr interface{}) { + out[arg.Name] = reconstr + }) +} + +// parseTopicWithSetter converts the indexed topic field-value pairs and stores them using the +// provided set function. +// +// Note, dynamic types cannot be reconstructed since they get mapped to Keccak256 +// hashes as the topic value! +func parseTopicWithSetter(fields Arguments, topics []common.Hash, setter func(Argument, interface{})) error { + // Sanity check that the fields and topics match up + if len(fields) != len(topics) { + return errors.New("topic/field count mismatch") + } + // Iterate over all the fields and reconstruct them from topics + for i, arg := range fields { + if !arg.Indexed { + return errors.New("non-indexed field in topic reconstruction") + } + var reconstr interface{} + switch arg.Type.T { + case TupleTy: + return errors.New("tuple type in topic reconstruction") + case StringTy, BytesTy, SliceTy, ArrayTy: + // Array types (including strings and bytes) have their keccak256 hashes stored in the topic- not a hash + // whose bytes can be decoded to the actual value- so the best we can do is retrieve that hash + reconstr = topics[i] + case FunctionTy: + if garbage := binary.BigEndian.Uint64(topics[i][0:8]); garbage != 0 { + return fmt.Errorf("bind: got improperly encoded function type, got %v", topics[i].Bytes()) + } + var tmp [24]byte + copy(tmp[:], topics[i][8:32]) + reconstr = tmp + default: + var err error + reconstr, err = toGoType(0, arg.Type, topics[i].Bytes()) + if err != nil { + return err + } + } + // Use the setter function to store the value + setter(arg, reconstr) + } + + return nil +} diff --git a/accounts/abi/topics_test.go b/accounts/abi/topics_test.go new file mode 100644 index 0000000000..99b290a4d3 --- /dev/null +++ b/accounts/abi/topics_test.go @@ -0,0 +1,391 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "math/big" + "reflect" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func TestMakeTopics(t *testing.T) { + type args struct { + query [][]interface{} + } + tests := []struct { + name string + args args + want [][]common.Hash + wantErr bool + }{ + { + "support fixed byte types, right padded to 32 bytes", + args{[][]interface{}{{[5]byte{1, 2, 3, 4, 5}}}}, + [][]common.Hash{{common.Hash{1, 2, 3, 4, 5}}}, + false, + }, + { + "support common hash types in topics", + args{[][]interface{}{{common.Hash{1, 2, 3, 4, 5}}}}, + [][]common.Hash{{common.Hash{1, 2, 3, 4, 5}}}, + false, + }, + { + "support address types in topics", + args{[][]interface{}{{common.Address{1, 2, 3, 4, 5}}}}, + [][]common.Hash{{common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5}}}, + false, + }, + { + "support *big.Int types in topics", + args{[][]interface{}{{big.NewInt(1).Lsh(big.NewInt(2), 254)}}}, + [][]common.Hash{{common.Hash{128}}}, + false, + }, + { + "support boolean types in topics", + args{[][]interface{}{ + {true}, + {false}, + }}, + [][]common.Hash{ + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}}, + {common.Hash{0}}, + }, + false, + }, + { + "support int/uint(8/16/32/64) types in topics", + args{[][]interface{}{ + {int8(-2)}, + {int16(-3)}, + {int32(-4)}, + {int64(-5)}, + {int8(1)}, + {int16(256)}, + {int32(65536)}, + {int64(4294967296)}, + {uint8(1)}, + {uint16(256)}, + {uint32(65536)}, + {uint64(4294967296)}, + }}, + [][]common.Hash{ + {common.Hash{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254}}, + {common.Hash{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 253}}, + {common.Hash{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 252}}, + {common.Hash{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 251}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0}}, + {common.Hash{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0}}, + }, + false, + }, + { + "support string types in topics", + args{[][]interface{}{{"hello world"}}}, + [][]common.Hash{{crypto.Keccak256Hash([]byte("hello world"))}}, + false, + }, + { + "support byte slice types in topics", + args{[][]interface{}{{[]byte{1, 2, 3}}}}, + [][]common.Hash{{crypto.Keccak256Hash([]byte{1, 2, 3})}}, + false, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + got, err := MakeTopics(tt.args.query...) + if (err != nil) != tt.wantErr { + t.Errorf("makeTopics() error = %v, wantErr %v", err, tt.wantErr) + return + } + if !reflect.DeepEqual(got, tt.want) { + t.Errorf("makeTopics() = %v, want %v", got, tt.want) + } + }) + } +} + +type args struct { + createObj func() interface{} + resultObj func() interface{} + resultMap func() map[string]interface{} + fields Arguments + topics []common.Hash +} + +type bytesStruct struct { + StaticBytes [5]byte +} +type int8Struct struct { + Int8Value int8 +} +type int256Struct struct { + Int256Value *big.Int +} + +type hashStruct struct { + HashValue common.Hash +} + +type funcStruct struct { + FuncValue [24]byte +} + +type topicTest struct { + name string + args args + wantErr bool +} + +func setupTopicsTests() []topicTest { + bytesType, _ := NewType("bytes5", "", nil) + int8Type, _ := NewType("int8", "", nil) + int256Type, _ := NewType("int256", "", nil) + tupleType, _ := NewType("tuple(int256,int8)", "", nil) + stringType, _ := NewType("string", "", nil) + funcType, _ := NewType("function", "", nil) + + tests := []topicTest{ + { + name: "support fixed byte types, right padded to 32 bytes", + args: args{ + createObj: func() interface{} { return &bytesStruct{} }, + resultObj: func() interface{} { return &bytesStruct{StaticBytes: [5]byte{1, 2, 3, 4, 5}} }, + resultMap: func() map[string]interface{} { + return map[string]interface{}{"staticBytes": [5]byte{1, 2, 3, 4, 5}} + }, + fields: Arguments{Argument{ + Name: "staticBytes", + Type: bytesType, + Indexed: true, + }}, + topics: []common.Hash{ + {1, 2, 3, 4, 5}, + }, + }, + wantErr: false, + }, + { + name: "int8 with negative value", + args: args{ + createObj: func() interface{} { return &int8Struct{} }, + resultObj: func() interface{} { return &int8Struct{Int8Value: -1} }, + resultMap: func() map[string]interface{} { + return map[string]interface{}{"int8Value": int8(-1)} + }, + fields: Arguments{Argument{ + Name: "int8Value", + Type: int8Type, + Indexed: true, + }}, + topics: []common.Hash{ + {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, + }, + }, + wantErr: false, + }, + { + name: "int256 with negative value", + args: args{ + createObj: func() interface{} { return &int256Struct{} }, + resultObj: func() interface{} { return &int256Struct{Int256Value: big.NewInt(-1)} }, + resultMap: func() map[string]interface{} { + return map[string]interface{}{"int256Value": big.NewInt(-1)} + }, + fields: Arguments{Argument{ + Name: "int256Value", + Type: int256Type, + Indexed: true, + }}, + topics: []common.Hash{ + {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, + }, + }, + wantErr: false, + }, + { + name: "hash type", + args: args{ + createObj: func() interface{} { return &hashStruct{} }, + resultObj: func() interface{} { return &hashStruct{crypto.Keccak256Hash([]byte("stringtopic"))} }, + resultMap: func() map[string]interface{} { + return map[string]interface{}{"hashValue": crypto.Keccak256Hash([]byte("stringtopic"))} + }, + fields: Arguments{Argument{ + Name: "hashValue", + Type: stringType, + Indexed: true, + }}, + topics: []common.Hash{ + crypto.Keccak256Hash([]byte("stringtopic")), + }, + }, + wantErr: false, + }, + { + name: "function type", + args: args{ + createObj: func() interface{} { return &funcStruct{} }, + resultObj: func() interface{} { + return &funcStruct{[24]byte{255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}} + }, + resultMap: func() map[string]interface{} { + return map[string]interface{}{"funcValue": [24]byte{255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}} + }, + fields: Arguments{Argument{ + Name: "funcValue", + Type: funcType, + Indexed: true, + }}, + topics: []common.Hash{ + {0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, + }, + }, + wantErr: false, + }, + { + name: "error on topic/field count mismatch", + args: args{ + createObj: func() interface{} { return nil }, + resultObj: func() interface{} { return nil }, + resultMap: func() map[string]interface{} { return make(map[string]interface{}) }, + fields: Arguments{Argument{ + Name: "tupletype", + Type: tupleType, + Indexed: true, + }}, + topics: []common.Hash{}, + }, + wantErr: true, + }, + { + name: "error on unindexed arguments", + args: args{ + createObj: func() interface{} { return &int256Struct{} }, + resultObj: func() interface{} { return &int256Struct{} }, + resultMap: func() map[string]interface{} { return make(map[string]interface{}) }, + fields: Arguments{Argument{ + Name: "int256Value", + Type: int256Type, + Indexed: false, + }}, + topics: []common.Hash{ + {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, + }, + }, + wantErr: true, + }, + { + name: "error on tuple in topic reconstruction", + args: args{ + createObj: func() interface{} { return &tupleType }, + resultObj: func() interface{} { return &tupleType }, + resultMap: func() map[string]interface{} { return make(map[string]interface{}) }, + fields: Arguments{Argument{ + Name: "tupletype", + Type: tupleType, + Indexed: true, + }}, + topics: []common.Hash{{0}}, + }, + wantErr: true, + }, + { + name: "error on improper encoded function", + args: args{ + createObj: func() interface{} { return &funcStruct{} }, + resultObj: func() interface{} { return &funcStruct{} }, + resultMap: func() map[string]interface{} { + return make(map[string]interface{}) + }, + fields: Arguments{Argument{ + Name: "funcValue", + Type: funcType, + Indexed: true, + }}, + topics: []common.Hash{ + {0, 0, 0, 0, 0, 0, 0, 128, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, + }, + }, + wantErr: true, + }, + } + + return tests +} + +func TestParseTopics(t *testing.T) { + tests := setupTopicsTests() + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + createObj := tt.args.createObj() + if err := ParseTopics(createObj, tt.args.fields, tt.args.topics); (err != nil) != tt.wantErr { + t.Errorf("parseTopics() error = %v, wantErr %v", err, tt.wantErr) + } + resultObj := tt.args.resultObj() + if !reflect.DeepEqual(createObj, resultObj) { + t.Errorf("parseTopics() = %v, want %v", createObj, resultObj) + } + }) + } +} + +func TestParseTopicsIntoMap(t *testing.T) { + tests := setupTopicsTests() + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + outMap := make(map[string]interface{}) + if err := ParseTopicsIntoMap(outMap, tt.args.fields, tt.args.topics); (err != nil) != tt.wantErr { + t.Errorf("parseTopicsIntoMap() error = %v, wantErr %v", err, tt.wantErr) + } + resultMap := tt.args.resultMap() + if !reflect.DeepEqual(outMap, resultMap) { + t.Errorf("parseTopicsIntoMap() = %v, want %v", outMap, resultMap) + } + }) + } +} diff --git a/accounts/abi/type.go b/accounts/abi/type.go new file mode 100644 index 0000000000..523369f653 --- /dev/null +++ b/accounts/abi/type.go @@ -0,0 +1,411 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "errors" + "fmt" + "reflect" + "regexp" + "strconv" + "strings" + + "github.com/ethereum/go-ethereum/common" +) + +// Type enumerator +const ( + IntTy byte = iota + UintTy + BoolTy + StringTy + SliceTy + ArrayTy + TupleTy + AddressTy + FixedBytesTy + BytesTy + HashTy + FixedPointTy + FunctionTy +) + +// Type is the reflection of the supported argument type. +type Type struct { + Elem *Type + Size int + T byte // Our own type checking + + stringKind string // holds the unparsed string for deriving signatures + + // Tuple relative fields + TupleRawName string // Raw struct name defined in source code, may be empty. + TupleElems []*Type // Type information of all tuple fields + TupleRawNames []string // Raw field name of all tuple fields + TupleType reflect.Type // Underlying struct of the tuple +} + +var ( + // typeRegex parses the abi sub types + typeRegex = regexp.MustCompile("([a-zA-Z]+)(([0-9]+)(x([0-9]+))?)?") +) + +// NewType creates a new reflection type of abi type given in t. +func NewType(t string, internalType string, components []ArgumentMarshaling) (typ Type, err error) { + // check that array brackets are equal if they exist + if strings.Count(t, "[") != strings.Count(t, "]") { + return Type{}, fmt.Errorf("invalid arg type in abi") + } + typ.stringKind = t + + // if there are brackets, get ready to go into slice/array mode and + // recursively create the type + if strings.Count(t, "[") != 0 { + // Note internalType can be empty here. + subInternal := internalType + if i := strings.LastIndex(internalType, "["); i != -1 { + subInternal = subInternal[:i] + } + // recursively embed the type + i := strings.LastIndex(t, "[") + embeddedType, err := NewType(t[:i], subInternal, components) + if err != nil { + return Type{}, err + } + // grab the last cell and create a type from there + sliced := t[i:] + // grab the slice size with regexp + re := regexp.MustCompile("[0-9]+") + intz := re.FindAllString(sliced, -1) + + if len(intz) == 0 { + // is a slice + typ.T = SliceTy + typ.Elem = &embeddedType + typ.stringKind = embeddedType.stringKind + sliced + } else if len(intz) == 1 { + // is an array + typ.T = ArrayTy + typ.Elem = &embeddedType + typ.Size, err = strconv.Atoi(intz[0]) + if err != nil { + return Type{}, fmt.Errorf("abi: error parsing variable size: %v", err) + } + typ.stringKind = embeddedType.stringKind + sliced + } else { + return Type{}, fmt.Errorf("invalid formatting of array type") + } + return typ, err + } + // parse the type and size of the abi-type. + matches := typeRegex.FindAllStringSubmatch(t, -1) + if len(matches) == 0 { + return Type{}, fmt.Errorf("invalid type '%v'", t) + } + parsedType := matches[0] + + // varSize is the size of the variable + var varSize int + if len(parsedType[3]) > 0 { + var err error + varSize, err = strconv.Atoi(parsedType[2]) + if err != nil { + return Type{}, fmt.Errorf("abi: error parsing variable size: %v", err) + } + } else { + if parsedType[0] == "uint" || parsedType[0] == "int" { + // this should fail because it means that there's something wrong with + // the abi type (the compiler should always format it to the size...always) + return Type{}, fmt.Errorf("unsupported arg type: %s", t) + } + } + // varType is the parsed abi type + switch varType := parsedType[1]; varType { + case "int": + typ.Size = varSize + typ.T = IntTy + case "uint": + typ.Size = varSize + typ.T = UintTy + case "bool": + typ.T = BoolTy + case "address": + typ.Size = 20 + typ.T = AddressTy + case "string": + typ.T = StringTy + case "bytes": + if varSize == 0 { + typ.T = BytesTy + } else { + typ.T = FixedBytesTy + typ.Size = varSize + } + case "tuple": + var ( + fields []reflect.StructField + elems []*Type + names []string + expression string // canonical parameter expression + ) + expression += "(" + overloadedNames := make(map[string]string) + for idx, c := range components { + cType, err := NewType(c.Type, c.InternalType, c.Components) + if err != nil { + return Type{}, err + } + fieldName, err := overloadedArgName(c.Name, overloadedNames) + if err != nil { + return Type{}, err + } + overloadedNames[fieldName] = fieldName + fields = append(fields, reflect.StructField{ + Name: fieldName, // reflect.StructOf will panic for any exported field. + Type: cType.GetType(), + Tag: reflect.StructTag("json:\"" + c.Name + "\""), + }) + elems = append(elems, &cType) + names = append(names, c.Name) + expression += cType.stringKind + if idx != len(components)-1 { + expression += "," + } + } + expression += ")" + + typ.TupleType = reflect.StructOf(fields) + typ.TupleElems = elems + typ.TupleRawNames = names + typ.T = TupleTy + typ.stringKind = expression + + const structPrefix = "struct " + // After solidity 0.5.10, a new field of abi "internalType" + // is introduced. From that we can obtain the struct name + // user defined in the source code. + if internalType != "" && strings.HasPrefix(internalType, structPrefix) { + // Foo.Bar type definition is not allowed in golang, + // convert the format to FooBar + typ.TupleRawName = strings.Replace(internalType[len(structPrefix):], ".", "", -1) + } + + case "function": + typ.T = FunctionTy + typ.Size = 24 + default: + return Type{}, fmt.Errorf("unsupported arg type: %s", t) + } + + return +} + +// GetType returns the reflection type of the ABI type. +func (t Type) GetType() reflect.Type { + switch t.T { + case IntTy: + return reflectIntType(false, t.Size) + case UintTy: + return reflectIntType(true, t.Size) + case BoolTy: + return reflect.TypeOf(false) + case StringTy: + return reflect.TypeOf("") + case SliceTy: + return reflect.SliceOf(t.Elem.GetType()) + case ArrayTy: + return reflect.ArrayOf(t.Size, t.Elem.GetType()) + case TupleTy: + return t.TupleType + case AddressTy: + return reflect.TypeOf(common.Address{}) + case FixedBytesTy: + return reflect.ArrayOf(t.Size, reflect.TypeOf(byte(0))) + case BytesTy: + return reflect.SliceOf(reflect.TypeOf(byte(0))) + case HashTy: + // hashtype currently not used + return reflect.ArrayOf(32, reflect.TypeOf(byte(0))) + case FixedPointTy: + // fixedpoint type currently not used + return reflect.ArrayOf(32, reflect.TypeOf(byte(0))) + case FunctionTy: + return reflect.ArrayOf(24, reflect.TypeOf(byte(0))) + default: + panic("Invalid type") + } +} + +func overloadedArgName(rawName string, names map[string]string) (string, error) { + fieldName := ToCamelCase(rawName) + if fieldName == "" { + return "", errors.New("abi: purely anonymous or underscored field is not supported") + } + // Handle overloaded fieldNames + _, ok := names[fieldName] + for idx := 0; ok; idx++ { + fieldName = fmt.Sprintf("%s%d", ToCamelCase(rawName), idx) + _, ok = names[fieldName] + } + return fieldName, nil +} + +// String implements Stringer. +func (t Type) String() (out string) { + return t.stringKind +} + +func (t Type) pack(v reflect.Value) ([]byte, error) { + // dereference pointer first if it's a pointer + v = indirect(v) + if err := typeCheck(t, v); err != nil { + return nil, err + } + + switch t.T { + case SliceTy, ArrayTy: + var ret []byte + + if t.requiresLengthPrefix() { + // append length + ret = append(ret, packNum(reflect.ValueOf(v.Len()))...) + } + + // calculate offset if any + offset := 0 + offsetReq := isDynamicType(*t.Elem) + if offsetReq { + offset = getTypeSize(*t.Elem) * v.Len() + } + var tail []byte + for i := 0; i < v.Len(); i++ { + val, err := t.Elem.pack(v.Index(i)) + if err != nil { + return nil, err + } + if !offsetReq { + ret = append(ret, val...) + continue + } + ret = append(ret, packNum(reflect.ValueOf(offset))...) + offset += len(val) + tail = append(tail, val...) + } + return append(ret, tail...), nil + case TupleTy: + // (T1,...,Tk) for k >= 0 and any types T1, …, Tk + // enc(X) = head(X(1)) ... head(X(k)) tail(X(1)) ... tail(X(k)) + // where X = (X(1), ..., X(k)) and head and tail are defined for Ti being a static + // type as + // head(X(i)) = enc(X(i)) and tail(X(i)) = "" (the empty string) + // and as + // head(X(i)) = enc(len(head(X(1)) ... head(X(k)) tail(X(1)) ... tail(X(i-1)))) + // tail(X(i)) = enc(X(i)) + // otherwise, i.e. if Ti is a dynamic type. + fieldmap, err := mapArgNamesToStructFields(t.TupleRawNames, v) + if err != nil { + return nil, err + } + // Calculate prefix occupied size. + offset := 0 + for _, elem := range t.TupleElems { + offset += getTypeSize(*elem) + } + var ret, tail []byte + for i, elem := range t.TupleElems { + field := v.FieldByName(fieldmap[t.TupleRawNames[i]]) + if !field.IsValid() { + return nil, fmt.Errorf("field %s for tuple not found in the given struct", t.TupleRawNames[i]) + } + val, err := elem.pack(field) + if err != nil { + return nil, err + } + if isDynamicType(*elem) { + ret = append(ret, packNum(reflect.ValueOf(offset))...) + tail = append(tail, val...) + offset += len(val) + } else { + ret = append(ret, val...) + } + } + return append(ret, tail...), nil + + default: + return packElement(t, v) + } +} + +// requireLengthPrefix returns whether the type requires any sort of length +// prefixing. +func (t Type) requiresLengthPrefix() bool { + return t.T == StringTy || t.T == BytesTy || t.T == SliceTy +} + +// isDynamicType returns true if the type is dynamic. +// The following types are called “dynamic”: +// * bytes +// * string +// * T[] for any T +// * T[k] for any dynamic T and any k >= 0 +// * (T1,...,Tk) if Ti is dynamic for some 1 <= i <= k +func isDynamicType(t Type) bool { + if t.T == TupleTy { + for _, elem := range t.TupleElems { + if isDynamicType(*elem) { + return true + } + } + return false + } + return t.T == StringTy || t.T == BytesTy || t.T == SliceTy || (t.T == ArrayTy && isDynamicType(*t.Elem)) +} + +// getTypeSize returns the size that this type needs to occupy. +// We distinguish static and dynamic types. Static types are encoded in-place +// and dynamic types are encoded at a separately allocated location after the +// current block. +// So for a static variable, the size returned represents the size that the +// variable actually occupies. +// For a dynamic variable, the returned size is fixed 32 bytes, which is used +// to store the location reference for actual value storage. +func getTypeSize(t Type) int { + if t.T == ArrayTy && !isDynamicType(*t.Elem) { + // Recursively calculate type size if it is a nested array + if t.Elem.T == ArrayTy || t.Elem.T == TupleTy { + return t.Size * getTypeSize(*t.Elem) + } + return t.Size * 32 + } else if t.T == TupleTy && !isDynamicType(t) { + total := 0 + for _, elem := range t.TupleElems { + total += getTypeSize(*elem) + } + return total + } + return 32 +} diff --git a/accounts/abi/type_test.go b/accounts/abi/type_test.go new file mode 100644 index 0000000000..5d946ae1cd --- /dev/null +++ b/accounts/abi/type_test.go @@ -0,0 +1,378 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "math/big" + "reflect" + "testing" + + "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/common" +) + +// typeWithoutStringer is a alias for the Type type which simply doesn't implement +// the stringer interface to allow printing type details in the tests below. +type typeWithoutStringer Type + +// Tests that all allowed types get recognized by the type parser. +func TestTypeRegexp(t *testing.T) { + tests := []struct { + blob string + components []ArgumentMarshaling + kind Type + }{ + {"bool", nil, Type{T: BoolTy, stringKind: "bool"}}, + {"bool[]", nil, Type{T: SliceTy, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[]"}}, + {"bool[2]", nil, Type{Size: 2, T: ArrayTy, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[2]"}}, + {"bool[2][]", nil, Type{T: SliceTy, Elem: &Type{T: ArrayTy, Size: 2, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[2]"}, stringKind: "bool[2][]"}}, + {"bool[][]", nil, Type{T: SliceTy, Elem: &Type{T: SliceTy, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[]"}, stringKind: "bool[][]"}}, + {"bool[][2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{T: SliceTy, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[]"}, stringKind: "bool[][2]"}}, + {"bool[2][2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{T: ArrayTy, Size: 2, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[2]"}, stringKind: "bool[2][2]"}}, + {"bool[2][][2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{T: SliceTy, Elem: &Type{T: ArrayTy, Size: 2, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[2]"}, stringKind: "bool[2][]"}, stringKind: "bool[2][][2]"}}, + {"bool[2][2][2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{T: ArrayTy, Size: 2, Elem: &Type{T: ArrayTy, Size: 2, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[2]"}, stringKind: "bool[2][2]"}, stringKind: "bool[2][2][2]"}}, + {"bool[][][]", nil, Type{T: SliceTy, Elem: &Type{T: SliceTy, Elem: &Type{T: SliceTy, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[]"}, stringKind: "bool[][]"}, stringKind: "bool[][][]"}}, + {"bool[][2][]", nil, Type{T: SliceTy, Elem: &Type{T: ArrayTy, Size: 2, Elem: &Type{T: SliceTy, Elem: &Type{T: BoolTy, stringKind: "bool"}, stringKind: "bool[]"}, stringKind: "bool[][2]"}, stringKind: "bool[][2][]"}}, + {"int8", nil, Type{Size: 8, T: IntTy, stringKind: "int8"}}, + {"int16", nil, Type{Size: 16, T: IntTy, stringKind: "int16"}}, + {"int32", nil, Type{Size: 32, T: IntTy, stringKind: "int32"}}, + {"int64", nil, Type{Size: 64, T: IntTy, stringKind: "int64"}}, + {"int256", nil, Type{Size: 256, T: IntTy, stringKind: "int256"}}, + {"int8[]", nil, Type{T: SliceTy, Elem: &Type{Size: 8, T: IntTy, stringKind: "int8"}, stringKind: "int8[]"}}, + {"int8[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 8, T: IntTy, stringKind: "int8"}, stringKind: "int8[2]"}}, + {"int16[]", nil, Type{T: SliceTy, Elem: &Type{Size: 16, T: IntTy, stringKind: "int16"}, stringKind: "int16[]"}}, + {"int16[2]", nil, Type{Size: 2, T: ArrayTy, Elem: &Type{Size: 16, T: IntTy, stringKind: "int16"}, stringKind: "int16[2]"}}, + {"int32[]", nil, Type{T: SliceTy, Elem: &Type{Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[]"}}, + {"int32[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 32, T: IntTy, stringKind: "int32"}, stringKind: "int32[2]"}}, + {"int64[]", nil, Type{T: SliceTy, Elem: &Type{Size: 64, T: IntTy, stringKind: "int64"}, stringKind: "int64[]"}}, + {"int64[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 64, T: IntTy, stringKind: "int64"}, stringKind: "int64[2]"}}, + {"int256[]", nil, Type{T: SliceTy, Elem: &Type{Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[]"}}, + {"int256[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 256, T: IntTy, stringKind: "int256"}, stringKind: "int256[2]"}}, + {"uint8", nil, Type{Size: 8, T: UintTy, stringKind: "uint8"}}, + {"uint16", nil, Type{Size: 16, T: UintTy, stringKind: "uint16"}}, + {"uint32", nil, Type{Size: 32, T: UintTy, stringKind: "uint32"}}, + {"uint64", nil, Type{Size: 64, T: UintTy, stringKind: "uint64"}}, + {"uint256", nil, Type{Size: 256, T: UintTy, stringKind: "uint256"}}, + {"uint8[]", nil, Type{T: SliceTy, Elem: &Type{Size: 8, T: UintTy, stringKind: "uint8"}, stringKind: "uint8[]"}}, + {"uint8[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 8, T: UintTy, stringKind: "uint8"}, stringKind: "uint8[2]"}}, + {"uint16[]", nil, Type{T: SliceTy, Elem: &Type{Size: 16, T: UintTy, stringKind: "uint16"}, stringKind: "uint16[]"}}, + {"uint16[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 16, T: UintTy, stringKind: "uint16"}, stringKind: "uint16[2]"}}, + {"uint32[]", nil, Type{T: SliceTy, Elem: &Type{Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[]"}}, + {"uint32[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 32, T: UintTy, stringKind: "uint32"}, stringKind: "uint32[2]"}}, + {"uint64[]", nil, Type{T: SliceTy, Elem: &Type{Size: 64, T: UintTy, stringKind: "uint64"}, stringKind: "uint64[]"}}, + {"uint64[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 64, T: UintTy, stringKind: "uint64"}, stringKind: "uint64[2]"}}, + {"uint256[]", nil, Type{T: SliceTy, Elem: &Type{Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[]"}}, + {"uint256[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 256, T: UintTy, stringKind: "uint256"}, stringKind: "uint256[2]"}}, + {"bytes32", nil, Type{T: FixedBytesTy, Size: 32, stringKind: "bytes32"}}, + {"bytes[]", nil, Type{T: SliceTy, Elem: &Type{T: BytesTy, stringKind: "bytes"}, stringKind: "bytes[]"}}, + {"bytes[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{T: BytesTy, stringKind: "bytes"}, stringKind: "bytes[2]"}}, + {"bytes32[]", nil, Type{T: SliceTy, Elem: &Type{T: FixedBytesTy, Size: 32, stringKind: "bytes32"}, stringKind: "bytes32[]"}}, + {"bytes32[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{T: FixedBytesTy, Size: 32, stringKind: "bytes32"}, stringKind: "bytes32[2]"}}, + {"string", nil, Type{T: StringTy, stringKind: "string"}}, + {"string[]", nil, Type{T: SliceTy, Elem: &Type{T: StringTy, stringKind: "string"}, stringKind: "string[]"}}, + {"string[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{T: StringTy, stringKind: "string"}, stringKind: "string[2]"}}, + {"address", nil, Type{Size: 20, T: AddressTy, stringKind: "address"}}, + {"address[]", nil, Type{T: SliceTy, Elem: &Type{Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[]"}}, + {"address[2]", nil, Type{T: ArrayTy, Size: 2, Elem: &Type{Size: 20, T: AddressTy, stringKind: "address"}, stringKind: "address[2]"}}, + // TODO when fixed types are implemented properly + // {"fixed", nil, Type{}}, + // {"fixed128x128", nil, Type{}}, + // {"fixed[]", nil, Type{}}, + // {"fixed[2]", nil, Type{}}, + // {"fixed128x128[]", nil, Type{}}, + // {"fixed128x128[2]", nil, Type{}}, + {"tuple", []ArgumentMarshaling{{Name: "a", Type: "int64"}}, Type{T: TupleTy, TupleType: reflect.TypeOf(struct { + A int64 `json:"a"` + }{}), stringKind: "(int64)", + TupleElems: []*Type{{T: IntTy, Size: 64, stringKind: "int64"}}, TupleRawNames: []string{"a"}}}, + {"tuple with long name", []ArgumentMarshaling{{Name: "aTypicalParamName", Type: "int64"}}, Type{T: TupleTy, TupleType: reflect.TypeOf(struct { + ATypicalParamName int64 `json:"aTypicalParamName"` + }{}), stringKind: "(int64)", + TupleElems: []*Type{{T: IntTy, Size: 64, stringKind: "int64"}}, TupleRawNames: []string{"aTypicalParamName"}}}, + } + + for _, tt := range tests { + typ, err := NewType(tt.blob, "", tt.components) + if err != nil { + t.Errorf("type %q: failed to parse type string: %v", tt.blob, err) + } + if !reflect.DeepEqual(typ, tt.kind) { + t.Errorf("type %q: parsed type mismatch:\nGOT %s\nWANT %s ", tt.blob, spew.Sdump(typeWithoutStringer(typ)), spew.Sdump(typeWithoutStringer(tt.kind))) + } + } +} + +func TestTypeCheck(t *testing.T) { + for i, test := range []struct { + typ string + components []ArgumentMarshaling + input interface{} + err string + }{ + {"uint", nil, big.NewInt(1), "unsupported arg type: uint"}, + {"int", nil, big.NewInt(1), "unsupported arg type: int"}, + {"uint256", nil, big.NewInt(1), ""}, + {"uint256[][3][]", nil, [][3][]*big.Int{{{}}}, ""}, + {"uint256[][][3]", nil, [3][][]*big.Int{{{}}}, ""}, + {"uint256[3][][]", nil, [][][3]*big.Int{{{}}}, ""}, + {"uint256[3][3][3]", nil, [3][3][3]*big.Int{{{}}}, ""}, + {"uint8[][]", nil, [][]uint8{}, ""}, + {"int256", nil, big.NewInt(1), ""}, + {"uint8", nil, uint8(1), ""}, + {"uint16", nil, uint16(1), ""}, + {"uint32", nil, uint32(1), ""}, + {"uint64", nil, uint64(1), ""}, + {"int8", nil, int8(1), ""}, + {"int16", nil, int16(1), ""}, + {"int32", nil, int32(1), ""}, + {"int64", nil, int64(1), ""}, + {"uint24", nil, big.NewInt(1), ""}, + {"uint40", nil, big.NewInt(1), ""}, + {"uint48", nil, big.NewInt(1), ""}, + {"uint56", nil, big.NewInt(1), ""}, + {"uint72", nil, big.NewInt(1), ""}, + {"uint80", nil, big.NewInt(1), ""}, + {"uint88", nil, big.NewInt(1), ""}, + {"uint96", nil, big.NewInt(1), ""}, + {"uint104", nil, big.NewInt(1), ""}, + {"uint112", nil, big.NewInt(1), ""}, + {"uint120", nil, big.NewInt(1), ""}, + {"uint128", nil, big.NewInt(1), ""}, + {"uint136", nil, big.NewInt(1), ""}, + {"uint144", nil, big.NewInt(1), ""}, + {"uint152", nil, big.NewInt(1), ""}, + {"uint160", nil, big.NewInt(1), ""}, + {"uint168", nil, big.NewInt(1), ""}, + {"uint176", nil, big.NewInt(1), ""}, + {"uint184", nil, big.NewInt(1), ""}, + {"uint192", nil, big.NewInt(1), ""}, + {"uint200", nil, big.NewInt(1), ""}, + {"uint208", nil, big.NewInt(1), ""}, + {"uint216", nil, big.NewInt(1), ""}, + {"uint224", nil, big.NewInt(1), ""}, + {"uint232", nil, big.NewInt(1), ""}, + {"uint240", nil, big.NewInt(1), ""}, + {"uint248", nil, big.NewInt(1), ""}, + {"int24", nil, big.NewInt(1), ""}, + {"int40", nil, big.NewInt(1), ""}, + {"int48", nil, big.NewInt(1), ""}, + {"int56", nil, big.NewInt(1), ""}, + {"int72", nil, big.NewInt(1), ""}, + {"int80", nil, big.NewInt(1), ""}, + {"int88", nil, big.NewInt(1), ""}, + {"int96", nil, big.NewInt(1), ""}, + {"int104", nil, big.NewInt(1), ""}, + {"int112", nil, big.NewInt(1), ""}, + {"int120", nil, big.NewInt(1), ""}, + {"int128", nil, big.NewInt(1), ""}, + {"int136", nil, big.NewInt(1), ""}, + {"int144", nil, big.NewInt(1), ""}, + {"int152", nil, big.NewInt(1), ""}, + {"int160", nil, big.NewInt(1), ""}, + {"int168", nil, big.NewInt(1), ""}, + {"int176", nil, big.NewInt(1), ""}, + {"int184", nil, big.NewInt(1), ""}, + {"int192", nil, big.NewInt(1), ""}, + {"int200", nil, big.NewInt(1), ""}, + {"int208", nil, big.NewInt(1), ""}, + {"int216", nil, big.NewInt(1), ""}, + {"int224", nil, big.NewInt(1), ""}, + {"int232", nil, big.NewInt(1), ""}, + {"int240", nil, big.NewInt(1), ""}, + {"int248", nil, big.NewInt(1), ""}, + {"uint30", nil, uint8(1), "abi: cannot use uint8 as type ptr as argument"}, + {"uint8", nil, uint16(1), "abi: cannot use uint16 as type uint8 as argument"}, + {"uint8", nil, uint32(1), "abi: cannot use uint32 as type uint8 as argument"}, + {"uint8", nil, uint64(1), "abi: cannot use uint64 as type uint8 as argument"}, + {"uint8", nil, int8(1), "abi: cannot use int8 as type uint8 as argument"}, + {"uint8", nil, int16(1), "abi: cannot use int16 as type uint8 as argument"}, + {"uint8", nil, int32(1), "abi: cannot use int32 as type uint8 as argument"}, + {"uint8", nil, int64(1), "abi: cannot use int64 as type uint8 as argument"}, + {"uint16", nil, uint16(1), ""}, + {"uint16", nil, uint8(1), "abi: cannot use uint8 as type uint16 as argument"}, + {"uint16[]", nil, []uint16{1, 2, 3}, ""}, + {"uint16[]", nil, [3]uint16{1, 2, 3}, ""}, + {"uint16[]", nil, []uint32{1, 2, 3}, "abi: cannot use []uint32 as type [0]uint16 as argument"}, + {"uint16[3]", nil, [3]uint32{1, 2, 3}, "abi: cannot use [3]uint32 as type [3]uint16 as argument"}, + {"uint16[3]", nil, [4]uint16{1, 2, 3}, "abi: cannot use [4]uint16 as type [3]uint16 as argument"}, + {"uint16[3]", nil, []uint16{1, 2, 3}, ""}, + {"uint16[3]", nil, []uint16{1, 2, 3, 4}, "abi: cannot use [4]uint16 as type [3]uint16 as argument"}, + {"address[]", nil, []common.Address{{1}}, ""}, + {"address[1]", nil, []common.Address{{1}}, ""}, + {"address[1]", nil, [1]common.Address{{1}}, ""}, + {"address[2]", nil, [1]common.Address{{1}}, "abi: cannot use [1]array as type [2]array as argument"}, + {"bytes32", nil, [32]byte{}, ""}, + {"bytes31", nil, [31]byte{}, ""}, + {"bytes30", nil, [30]byte{}, ""}, + {"bytes29", nil, [29]byte{}, ""}, + {"bytes28", nil, [28]byte{}, ""}, + {"bytes27", nil, [27]byte{}, ""}, + {"bytes26", nil, [26]byte{}, ""}, + {"bytes25", nil, [25]byte{}, ""}, + {"bytes24", nil, [24]byte{}, ""}, + {"bytes23", nil, [23]byte{}, ""}, + {"bytes22", nil, [22]byte{}, ""}, + {"bytes21", nil, [21]byte{}, ""}, + {"bytes20", nil, [20]byte{}, ""}, + {"bytes19", nil, [19]byte{}, ""}, + {"bytes18", nil, [18]byte{}, ""}, + {"bytes17", nil, [17]byte{}, ""}, + {"bytes16", nil, [16]byte{}, ""}, + {"bytes15", nil, [15]byte{}, ""}, + {"bytes14", nil, [14]byte{}, ""}, + {"bytes13", nil, [13]byte{}, ""}, + {"bytes12", nil, [12]byte{}, ""}, + {"bytes11", nil, [11]byte{}, ""}, + {"bytes10", nil, [10]byte{}, ""}, + {"bytes9", nil, [9]byte{}, ""}, + {"bytes8", nil, [8]byte{}, ""}, + {"bytes7", nil, [7]byte{}, ""}, + {"bytes6", nil, [6]byte{}, ""}, + {"bytes5", nil, [5]byte{}, ""}, + {"bytes4", nil, [4]byte{}, ""}, + {"bytes3", nil, [3]byte{}, ""}, + {"bytes2", nil, [2]byte{}, ""}, + {"bytes1", nil, [1]byte{}, ""}, + {"bytes32", nil, [33]byte{}, "abi: cannot use [33]uint8 as type [32]uint8 as argument"}, + {"bytes32", nil, common.Hash{1}, ""}, + {"bytes31", nil, common.Hash{1}, "abi: cannot use common.Hash as type [31]uint8 as argument"}, + {"bytes31", nil, [32]byte{}, "abi: cannot use [32]uint8 as type [31]uint8 as argument"}, + {"bytes", nil, []byte{0, 1}, ""}, + {"bytes", nil, [2]byte{0, 1}, "abi: cannot use array as type slice as argument"}, + {"bytes", nil, common.Hash{1}, "abi: cannot use array as type slice as argument"}, + {"string", nil, "hello world", ""}, + {"string", nil, "", ""}, + {"string", nil, []byte{}, "abi: cannot use slice as type string as argument"}, + {"bytes32[]", nil, [][32]byte{{}}, ""}, + {"function", nil, [24]byte{}, ""}, + {"bytes20", nil, common.Address{}, ""}, + {"address", nil, [20]byte{}, ""}, + {"address", nil, common.Address{}, ""}, + {"bytes32[]]", nil, "", "invalid arg type in abi"}, + {"invalidType", nil, "", "unsupported arg type: invalidType"}, + {"invalidSlice[]", nil, "", "unsupported arg type: invalidSlice"}, + // simple tuple + {"tuple", []ArgumentMarshaling{{Name: "a", Type: "uint256"}, {Name: "b", Type: "uint256"}}, struct { + A *big.Int + B *big.Int + }{}, ""}, + // tuple slice + {"tuple[]", []ArgumentMarshaling{{Name: "a", Type: "uint256"}, {Name: "b", Type: "uint256"}}, []struct { + A *big.Int + B *big.Int + }{}, ""}, + // tuple array + {"tuple[2]", []ArgumentMarshaling{{Name: "a", Type: "uint256"}, {Name: "b", Type: "uint256"}}, []struct { + A *big.Int + B *big.Int + }{{big.NewInt(0), big.NewInt(0)}, {big.NewInt(0), big.NewInt(0)}}, ""}, + } { + typ, err := NewType(test.typ, "", test.components) + if err != nil && len(test.err) == 0 { + t.Fatal("unexpected parse error:", err) + } else if err != nil && len(test.err) != 0 { + if err.Error() != test.err { + t.Errorf("%d failed. Expected err: '%v' got err: '%v'", i, test.err, err) + } + continue + } + + err = typeCheck(typ, reflect.ValueOf(test.input)) + if err != nil && len(test.err) == 0 { + t.Errorf("%d failed. Expected no err but got: %v", i, err) + continue + } + if err == nil && len(test.err) != 0 { + t.Errorf("%d failed. Expected err: %v but got none", i, test.err) + continue + } + + if err != nil && len(test.err) != 0 && err.Error() != test.err { + t.Errorf("%d failed. Expected err: '%v' got err: '%v'", i, test.err, err) + } + } +} + +func TestInternalType(t *testing.T) { + components := []ArgumentMarshaling{{Name: "a", Type: "int64"}} + internalType := "struct a.b[]" + kind := Type{ + T: TupleTy, + TupleType: reflect.TypeOf(struct { + A int64 `json:"a"` + }{}), + stringKind: "(int64)", + TupleRawName: "ab[]", + TupleElems: []*Type{{T: IntTy, Size: 64, stringKind: "int64"}}, + TupleRawNames: []string{"a"}, + } + + blob := "tuple" + typ, err := NewType(blob, internalType, components) + if err != nil { + t.Errorf("type %q: failed to parse type string: %v", blob, err) + } + if !reflect.DeepEqual(typ, kind) { + t.Errorf("type %q: parsed type mismatch:\nGOT %s\nWANT %s ", blob, spew.Sdump(typeWithoutStringer(typ)), spew.Sdump(typeWithoutStringer(kind))) + } +} + +func TestGetTypeSize(t *testing.T) { + var testCases = []struct { + typ string + components []ArgumentMarshaling + typSize int + }{ + // simple array + {"uint256[2]", nil, 32 * 2}, + {"address[3]", nil, 32 * 3}, + {"bytes32[4]", nil, 32 * 4}, + // array array + {"uint256[2][3][4]", nil, 32 * (2 * 3 * 4)}, + // array tuple + {"tuple[2]", []ArgumentMarshaling{{Name: "x", Type: "bytes32"}, {Name: "y", Type: "bytes32"}}, (32 * 2) * 2}, + // simple tuple + {"tuple", []ArgumentMarshaling{{Name: "x", Type: "uint256"}, {Name: "y", Type: "uint256"}}, 32 * 2}, + // tuple array + {"tuple", []ArgumentMarshaling{{Name: "x", Type: "bytes32[2]"}}, 32 * 2}, + // tuple tuple + {"tuple", []ArgumentMarshaling{{Name: "x", Type: "tuple", Components: []ArgumentMarshaling{{Name: "x", Type: "bytes32"}}}}, 32}, + {"tuple", []ArgumentMarshaling{{Name: "x", Type: "tuple", Components: []ArgumentMarshaling{{Name: "x", Type: "bytes32[2]"}, {Name: "y", Type: "uint256"}}}}, 32 * (2 + 1)}, + } + + for i, data := range testCases { + typ, err := NewType(data.typ, "", data.components) + if err != nil { + t.Errorf("type %q: failed to parse type string: %v", data.typ, err) + } + + result := getTypeSize(typ) + if result != data.typSize { + t.Errorf("case %d type %q: get type size error: actual: %d expected: %d", i, data.typ, result, data.typSize) + } + } +} diff --git a/accounts/abi/unpack.go b/accounts/abi/unpack.go new file mode 100644 index 0000000000..9bf2c0da53 --- /dev/null +++ b/accounts/abi/unpack.go @@ -0,0 +1,310 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "encoding/binary" + "fmt" + "math/big" + "reflect" + + "github.com/ethereum/go-ethereum/common" +) + +var ( + // MaxUint256 is the maximum value that can be represented by a uint256. + MaxUint256 = new(big.Int).Sub(new(big.Int).Lsh(common.Big1, 256), common.Big1) + // MaxInt256 is the maximum value that can be represented by a int256. + MaxInt256 = new(big.Int).Sub(new(big.Int).Lsh(common.Big1, 255), common.Big1) +) + +// ReadInteger reads the integer based on its kind and returns the appropriate value. +func ReadInteger(typ Type, b []byte) interface{} { + if typ.T == UintTy { + switch typ.Size { + case 8: + return b[len(b)-1] + case 16: + return binary.BigEndian.Uint16(b[len(b)-2:]) + case 32: + return binary.BigEndian.Uint32(b[len(b)-4:]) + case 64: + return binary.BigEndian.Uint64(b[len(b)-8:]) + default: + // the only case left for unsigned integer is uint256. + return new(big.Int).SetBytes(b) + } + } + switch typ.Size { + case 8: + return int8(b[len(b)-1]) + case 16: + return int16(binary.BigEndian.Uint16(b[len(b)-2:])) + case 32: + return int32(binary.BigEndian.Uint32(b[len(b)-4:])) + case 64: + return int64(binary.BigEndian.Uint64(b[len(b)-8:])) + default: + // the only case left for integer is int256 + // big.SetBytes can't tell if a number is negative or positive in itself. + // On EVM, if the returned number > max int256, it is negative. + // A number is > max int256 if the bit at position 255 is set. + ret := new(big.Int).SetBytes(b) + if ret.Bit(255) == 1 { + ret.Add(MaxUint256, new(big.Int).Neg(ret)) + ret.Add(ret, common.Big1) + ret.Neg(ret) + } + return ret + } +} + +// readBool reads a bool. +func readBool(word []byte) (bool, error) { + for _, b := range word[:31] { + if b != 0 { + return false, errBadBool + } + } + switch word[31] { + case 0: + return false, nil + case 1: + return true, nil + default: + return false, errBadBool + } +} + +// A function type is simply the address with the function selection signature at the end. +// +// readFunctionType enforces that standard by always presenting it as a 24-array (address + sig = 24 bytes) +func readFunctionType(t Type, word []byte) (funcTy [24]byte, err error) { + if t.T != FunctionTy { + return [24]byte{}, fmt.Errorf("abi: invalid type in call to make function type byte array") + } + if garbage := binary.BigEndian.Uint64(word[24:32]); garbage != 0 { + err = fmt.Errorf("abi: got improperly encoded function type, got %v", word) + } else { + copy(funcTy[:], word[0:24]) + } + return +} + +// ReadFixedBytes uses reflection to create a fixed array to be read from. +func ReadFixedBytes(t Type, word []byte) (interface{}, error) { + if t.T != FixedBytesTy { + return nil, fmt.Errorf("abi: invalid type in call to make fixed byte array") + } + // convert + array := reflect.New(t.GetType()).Elem() + + reflect.Copy(array, reflect.ValueOf(word[0:t.Size])) + return array.Interface(), nil + +} + +// forEachUnpack iteratively unpack elements. +func forEachUnpack(t Type, output []byte, start, size int) (interface{}, error) { + if size < 0 { + return nil, fmt.Errorf("cannot marshal input to array, size is negative (%d)", size) + } + if start+32*size > len(output) { + return nil, fmt.Errorf("abi: cannot marshal in to go array: offset %d would go over slice boundary (len=%d)", len(output), start+32*size) + } + + // this value will become our slice or our array, depending on the type + var refSlice reflect.Value + + if t.T == SliceTy { + // declare our slice + refSlice = reflect.MakeSlice(t.GetType(), size, size) + } else if t.T == ArrayTy { + // declare our array + refSlice = reflect.New(t.GetType()).Elem() + } else { + return nil, fmt.Errorf("abi: invalid type in array/slice unpacking stage") + } + + // Arrays have packed elements, resulting in longer unpack steps. + // Slices have just 32 bytes per element (pointing to the contents). + elemSize := getTypeSize(*t.Elem) + + for i, j := start, 0; j < size; i, j = i+elemSize, j+1 { + inter, err := toGoType(i, *t.Elem, output) + if err != nil { + return nil, err + } + + // append the item to our reflect slice + refSlice.Index(j).Set(reflect.ValueOf(inter)) + } + + // return the interface + return refSlice.Interface(), nil +} + +func forTupleUnpack(t Type, output []byte) (interface{}, error) { + retval := reflect.New(t.GetType()).Elem() + virtualArgs := 0 + for index, elem := range t.TupleElems { + marshalledValue, err := toGoType((index+virtualArgs)*32, *elem, output) + if elem.T == ArrayTy && !isDynamicType(*elem) { + // If we have a static array, like [3]uint256, these are coded as + // just like uint256,uint256,uint256. + // This means that we need to add two 'virtual' arguments when + // we count the index from now on. + // + // Array values nested multiple levels deep are also encoded inline: + // [2][3]uint256: uint256,uint256,uint256,uint256,uint256,uint256 + // + // Calculate the full array size to get the correct offset for the next argument. + // Decrement it by 1, as the normal index increment is still applied. + virtualArgs += getTypeSize(*elem)/32 - 1 + } else if elem.T == TupleTy && !isDynamicType(*elem) { + // If we have a static tuple, like (uint256, bool, uint256), these are + // coded as just like uint256,bool,uint256 + virtualArgs += getTypeSize(*elem)/32 - 1 + } + if err != nil { + return nil, err + } + retval.Field(index).Set(reflect.ValueOf(marshalledValue)) + } + return retval.Interface(), nil +} + +// toGoType parses the output bytes and recursively assigns the value of these bytes +// into a go type with accordance with the ABI spec. +func toGoType(index int, t Type, output []byte) (interface{}, error) { + if index+32 > len(output) { + return nil, fmt.Errorf("abi: cannot marshal in to go type: length insufficient %d require %d", len(output), index+32) + } + + var ( + returnOutput []byte + begin, length int + err error + ) + + // if we require a length prefix, find the beginning word and size returned. + if t.requiresLengthPrefix() { + begin, length, err = lengthPrefixPointsTo(index, output) + if err != nil { + return nil, err + } + } else { + returnOutput = output[index : index+32] + } + + switch t.T { + case TupleTy: + if isDynamicType(t) { + begin, err := tuplePointsTo(index, output) + if err != nil { + return nil, err + } + return forTupleUnpack(t, output[begin:]) + } + return forTupleUnpack(t, output[index:]) + case SliceTy: + return forEachUnpack(t, output[begin:], 0, length) + case ArrayTy: + if isDynamicType(*t.Elem) { + offset := binary.BigEndian.Uint64(returnOutput[len(returnOutput)-8:]) + if offset > uint64(len(output)) { + return nil, fmt.Errorf("abi: toGoType offset greater than output length: offset: %d, len(output): %d", offset, len(output)) + } + return forEachUnpack(t, output[offset:], 0, t.Size) + } + return forEachUnpack(t, output[index:], 0, t.Size) + case StringTy: // variable arrays are written at the end of the return bytes + return string(output[begin : begin+length]), nil + case IntTy, UintTy: + return ReadInteger(t, returnOutput), nil + case BoolTy: + return readBool(returnOutput) + case AddressTy: + return common.BytesToAddress(returnOutput), nil + case HashTy: + return common.BytesToHash(returnOutput), nil + case BytesTy: + return output[begin : begin+length], nil + case FixedBytesTy: + return ReadFixedBytes(t, returnOutput) + case FunctionTy: + return readFunctionType(t, returnOutput) + default: + return nil, fmt.Errorf("abi: unknown type %v", t.T) + } +} + +// lengthPrefixPointsTo interprets a 32 byte slice as an offset and then determines which indices to look to decode the type. +func lengthPrefixPointsTo(index int, output []byte) (start int, length int, err error) { + bigOffsetEnd := big.NewInt(0).SetBytes(output[index : index+32]) + bigOffsetEnd.Add(bigOffsetEnd, common.Big32) + outputLength := big.NewInt(int64(len(output))) + + if bigOffsetEnd.Cmp(outputLength) > 0 { + return 0, 0, fmt.Errorf("abi: cannot marshal in to go slice: offset %v would go over slice boundary (len=%v)", bigOffsetEnd, outputLength) + } + + if bigOffsetEnd.BitLen() > 63 { + return 0, 0, fmt.Errorf("abi offset larger than int64: %v", bigOffsetEnd) + } + + offsetEnd := int(bigOffsetEnd.Uint64()) + lengthBig := big.NewInt(0).SetBytes(output[offsetEnd-32 : offsetEnd]) + + totalSize := big.NewInt(0) + totalSize.Add(totalSize, bigOffsetEnd) + totalSize.Add(totalSize, lengthBig) + if totalSize.BitLen() > 63 { + return 0, 0, fmt.Errorf("abi: length larger than int64: %v", totalSize) + } + + if totalSize.Cmp(outputLength) > 0 { + return 0, 0, fmt.Errorf("abi: cannot marshal in to go type: length insufficient %v require %v", outputLength, totalSize) + } + start = int(bigOffsetEnd.Uint64()) + length = int(lengthBig.Uint64()) + return +} + +// tuplePointsTo resolves the location reference for dynamic tuple. +func tuplePointsTo(index int, output []byte) (start int, err error) { + offset := big.NewInt(0).SetBytes(output[index : index+32]) + outputLen := big.NewInt(int64(len(output))) + + if offset.Cmp(big.NewInt(int64(len(output)))) > 0 { + return 0, fmt.Errorf("abi: cannot marshal in to go slice: offset %v would go over slice boundary (len=%v)", offset, outputLen) + } + if offset.BitLen() > 63 { + return 0, fmt.Errorf("abi offset larger than int64: %v", offset) + } + return int(offset.Uint64()), nil +} diff --git a/accounts/abi/unpack_test.go b/accounts/abi/unpack_test.go new file mode 100644 index 0000000000..9f197509a7 --- /dev/null +++ b/accounts/abi/unpack_test.go @@ -0,0 +1,933 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package abi + +import ( + "bytes" + "encoding/hex" + "fmt" + "math/big" + "reflect" + "strconv" + "strings" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/stretchr/testify/require" +) + +// TestUnpack tests the general pack/unpack tests in packing_test.go +func TestUnpack(t *testing.T) { + for i, test := range packUnpackTests { + t.Run(strconv.Itoa(i)+" "+test.def, func(t *testing.T) { + //Unpack + def := fmt.Sprintf(`[{ "name" : "method", "type": "function", "outputs": %s}]`, test.def) + abi, err := JSON(strings.NewReader(def)) + if err != nil { + t.Fatalf("invalid ABI definition %s: %v", def, err) + } + encb, err := hex.DecodeString(test.packed) + if err != nil { + t.Fatalf("invalid hex %s: %v", test.packed, err) + } + out, err := abi.Unpack("method", encb) + if err != nil { + t.Errorf("test %d (%v) failed: %v", i, test.def, err) + return + } + if !reflect.DeepEqual(test.unpacked, ConvertType(out[0], test.unpacked)) { + t.Errorf("test %d (%v) failed: expected %v, got %v", i, test.def, test.unpacked, out[0]) + } + }) + } +} + +type unpackTest struct { + def string // ABI definition JSON + enc string // evm return data + want interface{} // the expected output + err string // empty or error if expected +} + +func (test unpackTest) checkError(err error) error { + if err != nil { + if len(test.err) == 0 { + return fmt.Errorf("expected no err but got: %v", err) + } else if err.Error() != test.err { + return fmt.Errorf("expected err: '%v' got err: %q", test.err, err) + } + } else if len(test.err) > 0 { + return fmt.Errorf("expected err: %v but got none", test.err) + } + return nil +} + +var unpackTests = []unpackTest{ + // Bools + { + def: `[{ "type": "bool" }]`, + enc: "0000000000000000000000000000000000000000000000000001000000000001", + want: false, + err: "abi: improperly encoded boolean value", + }, + { + def: `[{ "type": "bool" }]`, + enc: "0000000000000000000000000000000000000000000000000000000000000003", + want: false, + err: "abi: improperly encoded boolean value", + }, + // Integers + { + def: `[{"type": "uint32"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000001", + want: uint16(0), + err: "abi: cannot unmarshal uint32 in to uint16", + }, + { + def: `[{"type": "uint17"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000001", + want: uint16(0), + err: "abi: cannot unmarshal *big.Int in to uint16", + }, + { + def: `[{"type": "int32"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000001", + want: int16(0), + err: "abi: cannot unmarshal int32 in to int16", + }, + { + def: `[{"type": "int17"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000001", + want: int16(0), + err: "abi: cannot unmarshal *big.Int in to int16", + }, + { + def: `[{"type": "bytes"}]`, + enc: "000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000200100000000000000000000000000000000000000000000000000000000000000", + want: [32]byte{1}, + }, + { + def: `[{"type": "bytes32"}]`, + enc: "000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000200100000000000000000000000000000000000000000000000000000000000000", + want: []byte(nil), + err: "abi: cannot unmarshal [32]uint8 in to []uint8", + }, + { + def: `[{"name":"___","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + IntOne *big.Int + Intone *big.Int + }{IntOne: big.NewInt(1)}, + }, + { + def: `[{"name":"int_one","type":"int256"},{"name":"IntOne","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + Int1 *big.Int + Int2 *big.Int + }{}, + err: "abi: multiple outputs mapping to the same struct field 'IntOne'", + }, + { + def: `[{"name":"int","type":"int256"},{"name":"Int","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + Int1 *big.Int + Int2 *big.Int + }{}, + err: "abi: multiple outputs mapping to the same struct field 'Int'", + }, + { + def: `[{"name":"int","type":"int256"},{"name":"_int","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + Int1 *big.Int + Int2 *big.Int + }{}, + err: "abi: multiple outputs mapping to the same struct field 'Int'", + }, + { + def: `[{"name":"Int","type":"int256"},{"name":"_int","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + Int1 *big.Int + Int2 *big.Int + }{}, + err: "abi: multiple outputs mapping to the same struct field 'Int'", + }, + { + def: `[{"name":"Int","type":"int256"},{"name":"_","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + Int1 *big.Int + Int2 *big.Int + }{}, + err: "abi: purely underscored output cannot unpack to struct", + }, + // Make sure only the first argument is consumed + { + def: `[{"name":"int_one","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + IntOne *big.Int + }{big.NewInt(1)}, + }, + { + def: `[{"name":"int__one","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + IntOne *big.Int + }{big.NewInt(1)}, + }, + { + def: `[{"name":"int_one_","type":"int256"}]`, + enc: "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002", + want: struct { + IntOne *big.Int + }{big.NewInt(1)}, + }, +} + +// TestLocalUnpackTests runs test specially designed only for unpacking. +// All test cases that can be used to test packing and unpacking should move to packing_test.go +func TestLocalUnpackTests(t *testing.T) { + for i, test := range unpackTests { + t.Run(strconv.Itoa(i), func(t *testing.T) { + //Unpack + def := fmt.Sprintf(`[{ "name" : "method", "type": "function", "outputs": %s}]`, test.def) + abi, err := JSON(strings.NewReader(def)) + if err != nil { + t.Fatalf("invalid ABI definition %s: %v", def, err) + } + encb, err := hex.DecodeString(test.enc) + if err != nil { + t.Fatalf("invalid hex %s: %v", test.enc, err) + } + outptr := reflect.New(reflect.TypeOf(test.want)) + err = abi.UnpackIntoInterface(outptr.Interface(), "method", encb) + if err := test.checkError(err); err != nil { + t.Errorf("test %d (%v) failed: %v", i, test.def, err) + return + } + out := outptr.Elem().Interface() + if !reflect.DeepEqual(test.want, out) { + t.Errorf("test %d (%v) failed: expected %v, got %v", i, test.def, test.want, out) + } + }) + } +} + +func TestUnpackIntoInterfaceSetDynamicArrayOutput(t *testing.T) { + abi, err := JSON(strings.NewReader(`[{"constant":true,"inputs":[],"name":"testDynamicFixedBytes15","outputs":[{"name":"","type":"bytes15[]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"testDynamicFixedBytes32","outputs":[{"name":"","type":"bytes32[]"}],"payable":false,"stateMutability":"view","type":"function"}]`)) + if err != nil { + t.Fatal(err) + } + + var ( + marshalledReturn32 = common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000230783132333435363738393000000000000000000000000000000000000000003078303938373635343332310000000000000000000000000000000000000000") + marshalledReturn15 = common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000230783031323334350000000000000000000000000000000000000000000000003078393837363534000000000000000000000000000000000000000000000000") + + out32 [][32]byte + out15 [][15]byte + ) + + // test 32 + err = abi.UnpackIntoInterface(&out32, "testDynamicFixedBytes32", marshalledReturn32) + if err != nil { + t.Fatal(err) + } + if len(out32) != 2 { + t.Fatalf("expected array with 2 values, got %d", len(out32)) + } + expected := common.Hex2Bytes("3078313233343536373839300000000000000000000000000000000000000000") + if !bytes.Equal(out32[0][:], expected) { + t.Errorf("expected %x, got %x\n", expected, out32[0]) + } + expected = common.Hex2Bytes("3078303938373635343332310000000000000000000000000000000000000000") + if !bytes.Equal(out32[1][:], expected) { + t.Errorf("expected %x, got %x\n", expected, out32[1]) + } + + // test 15 + err = abi.UnpackIntoInterface(&out15, "testDynamicFixedBytes32", marshalledReturn15) + if err != nil { + t.Fatal(err) + } + if len(out15) != 2 { + t.Fatalf("expected array with 2 values, got %d", len(out15)) + } + expected = common.Hex2Bytes("307830313233343500000000000000") + if !bytes.Equal(out15[0][:], expected) { + t.Errorf("expected %x, got %x\n", expected, out15[0]) + } + expected = common.Hex2Bytes("307839383736353400000000000000") + if !bytes.Equal(out15[1][:], expected) { + t.Errorf("expected %x, got %x\n", expected, out15[1]) + } +} + +type methodMultiOutput struct { + Int *big.Int + String string +} + +func methodMultiReturn(require *require.Assertions) (ABI, []byte, methodMultiOutput) { + const definition = `[ + { "name" : "multi", "type": "function", "outputs": [ { "name": "Int", "type": "uint256" }, { "name": "String", "type": "string" } ] }]` + var expected = methodMultiOutput{big.NewInt(1), "hello"} + + abi, err := JSON(strings.NewReader(definition)) + require.NoError(err) + // using buff to make the code readable + buff := new(bytes.Buffer) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000005")) + buff.Write(common.RightPadBytes([]byte(expected.String), 32)) + return abi, buff.Bytes(), expected +} + +func TestMethodMultiReturn(t *testing.T) { + type reversed struct { + String string + Int *big.Int + } + + newInterfaceSlice := func(len int) interface{} { + slice := make([]interface{}, len) + return &slice + } + + abi, data, expected := methodMultiReturn(require.New(t)) + bigint := new(big.Int) + var testCases = []struct { + dest interface{} + expected interface{} + error string + name string + }{{ + &methodMultiOutput{}, + &expected, + "", + "Can unpack into structure", + }, { + &reversed{}, + &reversed{expected.String, expected.Int}, + "", + "Can unpack into reversed structure", + }, { + &[]interface{}{&bigint, new(string)}, + &[]interface{}{&expected.Int, &expected.String}, + "", + "Can unpack into a slice", + }, { + &[2]interface{}{&bigint, new(string)}, + &[2]interface{}{&expected.Int, &expected.String}, + "", + "Can unpack into an array", + }, { + &[2]interface{}{}, + &[2]interface{}{expected.Int, expected.String}, + "", + "Can unpack into interface array", + }, { + newInterfaceSlice(2), + &[]interface{}{expected.Int, expected.String}, + "", + "Can unpack into interface slice", + }, { + &[]interface{}{new(int), new(int)}, + &[]interface{}{&expected.Int, &expected.String}, + "abi: cannot unmarshal *big.Int in to int", + "Can not unpack into a slice with wrong types", + }, { + &[]interface{}{new(int)}, + &[]interface{}{}, + "abi: insufficient number of arguments for unpack, want 2, got 1", + "Can not unpack into a slice with wrong types", + }} + for _, tc := range testCases { + tc := tc + t.Run(tc.name, func(t *testing.T) { + require := require.New(t) + err := abi.UnpackIntoInterface(tc.dest, "multi", data) + if tc.error == "" { + require.Nil(err, "Should be able to unpack method outputs.") + require.Equal(tc.expected, tc.dest) + } else { + require.EqualError(err, tc.error) + } + }) + } +} + +func TestMultiReturnWithArray(t *testing.T) { + const definition = `[{"name" : "multi", "type": "function", "outputs": [{"type": "uint64[3]"}, {"type": "uint64"}]}]` + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + buff := new(bytes.Buffer) + buff.Write(common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000000900000000000000000000000000000000000000000000000000000000000000090000000000000000000000000000000000000000000000000000000000000009")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000008")) + + ret1, ret1Exp := new([3]uint64), [3]uint64{9, 9, 9} + ret2, ret2Exp := new(uint64), uint64(8) + if err := abi.UnpackIntoInterface(&[]interface{}{ret1, ret2}, "multi", buff.Bytes()); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(*ret1, ret1Exp) { + t.Error("array result", *ret1, "!= Expected", ret1Exp) + } + if *ret2 != ret2Exp { + t.Error("int result", *ret2, "!= Expected", ret2Exp) + } +} + +func TestMultiReturnWithStringArray(t *testing.T) { + const definition = `[{"name" : "multi", "type": "function", "outputs": [{"name": "","type": "uint256[3]"},{"name": "","type": "address"},{"name": "","type": "string[2]"},{"name": "","type": "bool"}]}]` + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + buff := new(bytes.Buffer) + buff.Write(common.Hex2Bytes("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")) + temp, _ := big.NewInt(0).SetString("30000000000000000000", 10) + ret1, ret1Exp := new([3]*big.Int), [3]*big.Int{big.NewInt(1545304298), big.NewInt(6), temp} + ret2, ret2Exp := new(common.Address), common.HexToAddress("ab1257528b3782fb40d7ed5f72e624b744dffb2f") + ret3, ret3Exp := new([2]string), [2]string{"Ethereum", "Hello, Ethereum!"} + ret4, ret4Exp := new(bool), false + if err := abi.UnpackIntoInterface(&[]interface{}{ret1, ret2, ret3, ret4}, "multi", buff.Bytes()); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(*ret1, ret1Exp) { + t.Error("big.Int array result", *ret1, "!= Expected", ret1Exp) + } + if !reflect.DeepEqual(*ret2, ret2Exp) { + t.Error("address result", *ret2, "!= Expected", ret2Exp) + } + if !reflect.DeepEqual(*ret3, ret3Exp) { + t.Error("string array result", *ret3, "!= Expected", ret3Exp) + } + if !reflect.DeepEqual(*ret4, ret4Exp) { + t.Error("bool result", *ret4, "!= Expected", ret4Exp) + } +} + +func TestMultiReturnWithStringSlice(t *testing.T) { + const definition = `[{"name" : "multi", "type": "function", "outputs": [{"name": "","type": "string[]"},{"name": "","type": "uint256[]"}]}]` + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + buff := new(bytes.Buffer) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) // output[0] offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000120")) // output[1] offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // output[0] length + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) // output[0][0] offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000080")) // output[0][1] offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000008")) // output[0][0] length + buff.Write(common.Hex2Bytes("657468657265756d000000000000000000000000000000000000000000000000")) // output[0][0] value + buff.Write(common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000000b")) // output[0][1] length + buff.Write(common.Hex2Bytes("676f2d657468657265756d000000000000000000000000000000000000000000")) // output[0][1] value + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // output[1] length + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000064")) // output[1][0] value + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000065")) // output[1][1] value + ret1, ret1Exp := new([]string), []string{"ethereum", "go-ethereum"} + ret2, ret2Exp := new([]*big.Int), []*big.Int{big.NewInt(100), big.NewInt(101)} + if err := abi.UnpackIntoInterface(&[]interface{}{ret1, ret2}, "multi", buff.Bytes()); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(*ret1, ret1Exp) { + t.Error("string slice result", *ret1, "!= Expected", ret1Exp) + } + if !reflect.DeepEqual(*ret2, ret2Exp) { + t.Error("uint256 slice result", *ret2, "!= Expected", ret2Exp) + } +} + +func TestMultiReturnWithDeeplyNestedArray(t *testing.T) { + // Similar to TestMultiReturnWithArray, but with a special case in mind: + // values of nested static arrays count towards the size as well, and any element following + // after such nested array argument should be read with the correct offset, + // so that it does not read content from the previous array argument. + const definition = `[{"name" : "multi", "type": "function", "outputs": [{"type": "uint64[3][2][4]"}, {"type": "uint64"}]}]` + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + buff := new(bytes.Buffer) + // construct the test array, each 3 char element is joined with 61 '0' chars, + // to from the ((3 + 61) * 0.5) = 32 byte elements in the array. + buff.Write(common.Hex2Bytes(strings.Join([]string{ + "", //empty, to apply the 61-char separator to the first element as well. + "111", "112", "113", "121", "122", "123", + "211", "212", "213", "221", "222", "223", + "311", "312", "313", "321", "322", "323", + "411", "412", "413", "421", "422", "423", + }, "0000000000000000000000000000000000000000000000000000000000000"))) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000009876")) + + ret1, ret1Exp := new([4][2][3]uint64), [4][2][3]uint64{ + {{0x111, 0x112, 0x113}, {0x121, 0x122, 0x123}}, + {{0x211, 0x212, 0x213}, {0x221, 0x222, 0x223}}, + {{0x311, 0x312, 0x313}, {0x321, 0x322, 0x323}}, + {{0x411, 0x412, 0x413}, {0x421, 0x422, 0x423}}, + } + ret2, ret2Exp := new(uint64), uint64(0x9876) + if err := abi.UnpackIntoInterface(&[]interface{}{ret1, ret2}, "multi", buff.Bytes()); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(*ret1, ret1Exp) { + t.Error("array result", *ret1, "!= Expected", ret1Exp) + } + if *ret2 != ret2Exp { + t.Error("int result", *ret2, "!= Expected", ret2Exp) + } +} + +func TestUnmarshal(t *testing.T) { + const definition = `[ + { "name" : "int", "type": "function", "outputs": [ { "type": "uint256" } ] }, + { "name" : "bool", "type": "function", "outputs": [ { "type": "bool" } ] }, + { "name" : "bytes", "type": "function", "outputs": [ { "type": "bytes" } ] }, + { "name" : "fixed", "type": "function", "outputs": [ { "type": "bytes32" } ] }, + { "name" : "multi", "type": "function", "outputs": [ { "type": "bytes" }, { "type": "bytes" } ] }, + { "name" : "intArraySingle", "type": "function", "outputs": [ { "type": "uint256[3]" } ] }, + { "name" : "addressSliceSingle", "type": "function", "outputs": [ { "type": "address[]" } ] }, + { "name" : "addressSliceDouble", "type": "function", "outputs": [ { "name": "a", "type": "address[]" }, { "name": "b", "type": "address[]" } ] }, + { "name" : "mixedBytes", "type": "function", "stateMutability" : "view", "outputs": [ { "name": "a", "type": "bytes" }, { "name": "b", "type": "bytes32" } ] }]` + + abi, err := JSON(strings.NewReader(definition)) + if err != nil { + t.Fatal(err) + } + buff := new(bytes.Buffer) + + // marshall mixed bytes (mixedBytes) + p0, p0Exp := []byte{}, common.Hex2Bytes("01020000000000000000") + p1, p1Exp := [32]byte{}, common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000ddeeff") + mixedBytes := []interface{}{&p0, &p1} + + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000ddeeff")) + buff.Write(common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000000a")) + buff.Write(common.Hex2Bytes("0102000000000000000000000000000000000000000000000000000000000000")) + + err = abi.UnpackIntoInterface(&mixedBytes, "mixedBytes", buff.Bytes()) + if err != nil { + t.Error(err) + } else { + if !bytes.Equal(p0, p0Exp) { + t.Errorf("unexpected value unpacked: want %x, got %x", p0Exp, p0) + } + + if !bytes.Equal(p1[:], p1Exp) { + t.Errorf("unexpected value unpacked: want %x, got %x", p1Exp, p1) + } + } + + // marshal int + var Int *big.Int + err = abi.UnpackIntoInterface(&Int, "int", common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) + if err != nil { + t.Error(err) + } + + if Int == nil || Int.Cmp(big.NewInt(1)) != 0 { + t.Error("expected Int to be 1 got", Int) + } + + // marshal bool + var Bool bool + err = abi.UnpackIntoInterface(&Bool, "bool", common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) + if err != nil { + t.Error(err) + } + + if !Bool { + t.Error("expected Bool to be true") + } + + // marshal dynamic bytes max length 32 + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) + bytesOut := common.RightPadBytes([]byte("hello"), 32) + buff.Write(bytesOut) + + var Bytes []byte + err = abi.UnpackIntoInterface(&Bytes, "bytes", buff.Bytes()) + if err != nil { + t.Error(err) + } + + if !bytes.Equal(Bytes, bytesOut) { + t.Errorf("expected %x got %x", bytesOut, Bytes) + } + + // marshall dynamic bytes max length 64 + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) + bytesOut = common.RightPadBytes([]byte("hello"), 64) + buff.Write(bytesOut) + + err = abi.UnpackIntoInterface(&Bytes, "bytes", buff.Bytes()) + if err != nil { + t.Error(err) + } + + if !bytes.Equal(Bytes, bytesOut) { + t.Errorf("expected %x got %x", bytesOut, Bytes) + } + + // marshall dynamic bytes max length 64 + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) + buff.Write(common.Hex2Bytes("000000000000000000000000000000000000000000000000000000000000003f")) + bytesOut = common.RightPadBytes([]byte("hello"), 64) + buff.Write(bytesOut) + + err = abi.UnpackIntoInterface(&Bytes, "bytes", buff.Bytes()) + if err != nil { + t.Error(err) + } + + if !bytes.Equal(Bytes, bytesOut[:len(bytesOut)-1]) { + t.Errorf("expected %x got %x", bytesOut[:len(bytesOut)-1], Bytes) + } + + // marshal dynamic bytes output empty + err = abi.UnpackIntoInterface(&Bytes, "bytes", nil) + if err == nil { + t.Error("expected error") + } + + // marshal dynamic bytes length 5 + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000005")) + buff.Write(common.RightPadBytes([]byte("hello"), 32)) + + err = abi.UnpackIntoInterface(&Bytes, "bytes", buff.Bytes()) + if err != nil { + t.Error(err) + } + + if !bytes.Equal(Bytes, []byte("hello")) { + t.Errorf("expected %x got %x", bytesOut, Bytes) + } + + // marshal dynamic bytes length 5 + buff.Reset() + buff.Write(common.RightPadBytes([]byte("hello"), 32)) + + var hash common.Hash + err = abi.UnpackIntoInterface(&hash, "fixed", buff.Bytes()) + if err != nil { + t.Error(err) + } + + helloHash := common.BytesToHash(common.RightPadBytes([]byte("hello"), 32)) + if hash != helloHash { + t.Errorf("Expected %x to equal %x", hash, helloHash) + } + + // marshal error + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) + err = abi.UnpackIntoInterface(&Bytes, "bytes", buff.Bytes()) + if err == nil { + t.Error("expected error") + } + + err = abi.UnpackIntoInterface(&Bytes, "multi", make([]byte, 64)) + if err == nil { + t.Error("expected error") + } + + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000003")) + // marshal int array + var intArray [3]*big.Int + err = abi.UnpackIntoInterface(&intArray, "intArraySingle", buff.Bytes()) + if err != nil { + t.Error(err) + } + var testAgainstIntArray [3]*big.Int + testAgainstIntArray[0] = big.NewInt(1) + testAgainstIntArray[1] = big.NewInt(2) + testAgainstIntArray[2] = big.NewInt(3) + + for i, Int := range intArray { + if Int.Cmp(testAgainstIntArray[i]) != 0 { + t.Errorf("expected %v, got %v", testAgainstIntArray[i], Int) + } + } + // marshal address slice + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000020")) // offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // size + buff.Write(common.Hex2Bytes("0000000000000000000000000100000000000000000000000000000000000000")) + + var outAddr []common.Address + err = abi.UnpackIntoInterface(&outAddr, "addressSliceSingle", buff.Bytes()) + if err != nil { + t.Fatal("didn't expect error:", err) + } + + if len(outAddr) != 1 { + t.Fatal("expected 1 item, got", len(outAddr)) + } + + if outAddr[0] != (common.Address{1}) { + t.Errorf("expected %x, got %x", common.Address{1}, outAddr[0]) + } + + // marshal multiple address slice + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000040")) // offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000080")) // offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // size + buff.Write(common.Hex2Bytes("0000000000000000000000000100000000000000000000000000000000000000")) + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // size + buff.Write(common.Hex2Bytes("0000000000000000000000000200000000000000000000000000000000000000")) + buff.Write(common.Hex2Bytes("0000000000000000000000000300000000000000000000000000000000000000")) + + var outAddrStruct struct { + A []common.Address + B []common.Address + } + err = abi.UnpackIntoInterface(&outAddrStruct, "addressSliceDouble", buff.Bytes()) + if err != nil { + t.Fatal("didn't expect error:", err) + } + + if len(outAddrStruct.A) != 1 { + t.Fatal("expected 1 item, got", len(outAddrStruct.A)) + } + + if outAddrStruct.A[0] != (common.Address{1}) { + t.Errorf("expected %x, got %x", common.Address{1}, outAddrStruct.A[0]) + } + + if len(outAddrStruct.B) != 2 { + t.Fatal("expected 1 item, got", len(outAddrStruct.B)) + } + + if outAddrStruct.B[0] != (common.Address{2}) { + t.Errorf("expected %x, got %x", common.Address{2}, outAddrStruct.B[0]) + } + if outAddrStruct.B[1] != (common.Address{3}) { + t.Errorf("expected %x, got %x", common.Address{3}, outAddrStruct.B[1]) + } + + // marshal invalid address slice + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000100")) + + err = abi.UnpackIntoInterface(&outAddr, "addressSliceSingle", buff.Bytes()) + if err == nil { + t.Fatal("expected error:", err) + } +} + +func TestUnpackTuple(t *testing.T) { + const simpleTuple = `[{"name":"tuple","type":"function","outputs":[{"type":"tuple","name":"ret","components":[{"type":"int256","name":"a"},{"type":"int256","name":"b"}]}]}]` + abi, err := JSON(strings.NewReader(simpleTuple)) + if err != nil { + t.Fatal(err) + } + buff := new(bytes.Buffer) + + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // ret[a] = 1 + buff.Write(common.Hex2Bytes("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")) // ret[b] = -1 + + // If the result is single tuple, use struct as return value container directly. + type v struct { + A *big.Int + B *big.Int + } + type r struct { + Result v + } + var ret0 = new(r) + err = abi.UnpackIntoInterface(ret0, "tuple", buff.Bytes()) + + if err != nil { + t.Error(err) + } else { + if ret0.Result.A.Cmp(big.NewInt(1)) != 0 { + t.Errorf("unexpected value unpacked: want %x, got %x", 1, ret0.Result.A) + } + if ret0.Result.B.Cmp(big.NewInt(-1)) != 0 { + t.Errorf("unexpected value unpacked: want %x, got %x", -1, ret0.Result.B) + } + } + + // Test nested tuple + const nestedTuple = `[{"name":"tuple","type":"function","outputs":[ + {"type":"tuple","name":"s","components":[{"type":"uint256","name":"a"},{"type":"uint256[]","name":"b"},{"type":"tuple[]","name":"c","components":[{"name":"x", "type":"uint256"},{"name":"y","type":"uint256"}]}]}, + {"type":"tuple","name":"t","components":[{"name":"x", "type":"uint256"},{"name":"y","type":"uint256"}]}, + {"type":"uint256","name":"a"} + ]}]` + + abi, err = JSON(strings.NewReader(nestedTuple)) + if err != nil { + t.Fatal(err) + } + buff.Reset() + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000080")) // s offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000000")) // t.X = 0 + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // t.Y = 1 + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // a = 1 + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // s.A = 1 + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000060")) // s.B offset + buff.Write(common.Hex2Bytes("00000000000000000000000000000000000000000000000000000000000000c0")) // s.C offset + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // s.B length + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // s.B[0] = 1 + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // s.B[0] = 2 + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // s.C length + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // s.C[0].X + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // s.C[0].Y + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000002")) // s.C[1].X + buff.Write(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) // s.C[1].Y + + type T struct { + X *big.Int `abi:"x"` + Z *big.Int `abi:"y"` // Test whether the abi tag works. + } + + type S struct { + A *big.Int + B []*big.Int + C []T + } + + type Ret struct { + FieldS S `abi:"s"` + FieldT T `abi:"t"` + A *big.Int + } + var ret Ret + var expected = Ret{ + FieldS: S{ + A: big.NewInt(1), + B: []*big.Int{big.NewInt(1), big.NewInt(2)}, + C: []T{ + {big.NewInt(1), big.NewInt(2)}, + {big.NewInt(2), big.NewInt(1)}, + }, + }, + FieldT: T{ + big.NewInt(0), big.NewInt(1), + }, + A: big.NewInt(1), + } + + err = abi.UnpackIntoInterface(&ret, "tuple", buff.Bytes()) + if err != nil { + t.Error(err) + } + if reflect.DeepEqual(ret, expected) { + t.Error("unexpected unpack value") + } +} + +func TestOOMMaliciousInput(t *testing.T) { + oomTests := []unpackTest{ + { + def: `[{"type": "uint8[]"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset + "0000000000000000000000000000000000000000000000000000000000000003" + // num elems + "0000000000000000000000000000000000000000000000000000000000000001" + // elem 1 + "0000000000000000000000000000000000000000000000000000000000000002", // elem 2 + }, + { // Length larger than 64 bits + def: `[{"type": "uint8[]"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset + "00ffffffffffffffffffffffffffffffffffffffffffffff0000000000000002" + // num elems + "0000000000000000000000000000000000000000000000000000000000000001" + // elem 1 + "0000000000000000000000000000000000000000000000000000000000000002", // elem 2 + }, + { // Offset very large (over 64 bits) + def: `[{"type": "uint8[]"}]`, + enc: "00ffffffffffffffffffffffffffffffffffffffffffffff0000000000000020" + // offset + "0000000000000000000000000000000000000000000000000000000000000002" + // num elems + "0000000000000000000000000000000000000000000000000000000000000001" + // elem 1 + "0000000000000000000000000000000000000000000000000000000000000002", // elem 2 + }, + { // Offset very large (below 64 bits) + def: `[{"type": "uint8[]"}]`, + enc: "0000000000000000000000000000000000000000000000007ffffffffff00020" + // offset + "0000000000000000000000000000000000000000000000000000000000000002" + // num elems + "0000000000000000000000000000000000000000000000000000000000000001" + // elem 1 + "0000000000000000000000000000000000000000000000000000000000000002", // elem 2 + }, + { // Offset negative (as 64 bit) + def: `[{"type": "uint8[]"}]`, + enc: "000000000000000000000000000000000000000000000000f000000000000020" + // offset + "0000000000000000000000000000000000000000000000000000000000000002" + // num elems + "0000000000000000000000000000000000000000000000000000000000000001" + // elem 1 + "0000000000000000000000000000000000000000000000000000000000000002", // elem 2 + }, + + { // Negative length + def: `[{"type": "uint8[]"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset + "000000000000000000000000000000000000000000000000f000000000000002" + // num elems + "0000000000000000000000000000000000000000000000000000000000000001" + // elem 1 + "0000000000000000000000000000000000000000000000000000000000000002", // elem 2 + }, + { // Very large length + def: `[{"type": "uint8[]"}]`, + enc: "0000000000000000000000000000000000000000000000000000000000000020" + // offset + "0000000000000000000000000000000000000000000000007fffffffff000002" + // num elems + "0000000000000000000000000000000000000000000000000000000000000001" + // elem 1 + "0000000000000000000000000000000000000000000000000000000000000002", // elem 2 + }, + } + for i, test := range oomTests { + def := fmt.Sprintf(`[{ "name" : "method", "type": "function", "outputs": %s}]`, test.def) + abi, err := JSON(strings.NewReader(def)) + if err != nil { + t.Fatalf("invalid ABI definition %s: %v", def, err) + } + encb, err := hex.DecodeString(test.enc) + if err != nil { + t.Fatalf("invalid hex: %s" + test.enc) + } + _, err = abi.Methods["method"].Outputs.UnpackValues(encb) + if err == nil { + t.Fatalf("Expected error on malicious input, test %d", i) + } + } +} diff --git a/accounts/accounts.go b/accounts/accounts.go new file mode 100644 index 0000000000..f44e21d629 --- /dev/null +++ b/accounts/accounts.go @@ -0,0 +1,234 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package accounts implements high level Ethereum account management. +package accounts + +import ( + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" + "golang.org/x/crypto/sha3" +) + +// Account represents an Ethereum account located at a specific location defined +// by the optional URL field. +type Account struct { + Address common.Address `json:"address"` // Ethereum account address derived from the key + URL URL `json:"url"` // Optional resource locator within a backend +} + +const ( + MimetypeDataWithValidator = "data/validator" + MimetypeTypedData = "data/typed" + MimetypeClique = "application/x-clique-header" + MimetypeTextPlain = "text/plain" +) + +// Wallet represents a software or hardware wallet that might contain one or more +// accounts (derived from the same seed). +type Wallet interface { + // URL retrieves the canonical path under which this wallet is reachable. It is + // user by upper layers to define a sorting order over all wallets from multiple + // backends. + URL() URL + + // Status returns a textual status to aid the user in the current state of the + // wallet. It also returns an error indicating any failure the wallet might have + // encountered. + Status() (string, error) + + // Open initializes access to a wallet instance. It is not meant to unlock or + // decrypt account keys, rather simply to establish a connection to hardware + // wallets and/or to access derivation seeds. + // + // The passphrase parameter may or may not be used by the implementation of a + // particular wallet instance. The reason there is no passwordless open method + // is to strive towards a uniform wallet handling, oblivious to the different + // backend providers. + // + // Please note, if you open a wallet, you must close it to release any allocated + // resources (especially important when working with hardware wallets). + Open(passphrase string) error + + // Close releases any resources held by an open wallet instance. + Close() error + + // Accounts retrieves the list of signing accounts the wallet is currently aware + // of. For hierarchical deterministic wallets, the list will not be exhaustive, + // rather only contain the accounts explicitly pinned during account derivation. + Accounts() []Account + + // Contains returns whether an account is part of this particular wallet or not. + Contains(account Account) bool + + // Derive attempts to explicitly derive a hierarchical deterministic account at + // the specified derivation path. If requested, the derived account will be added + // to the wallet's tracked account list. + Derive(path DerivationPath, pin bool) (Account, error) + + // SelfDerive sets a base account derivation path from which the wallet attempts + // to discover non zero accounts and automatically add them to list of tracked + // accounts. + // + // Note, self derivation will increment the last component of the specified path + // opposed to decending into a child path to allow discovering accounts starting + // from non zero components. + // + // Some hardware wallets switched derivation paths through their evolution, so + // this method supports providing multiple bases to discover old user accounts + // too. Only the last base will be used to derive the next empty account. + // + // You can disable automatic account discovery by calling SelfDerive with a nil + // chain state reader. + SelfDerive(bases []DerivationPath, chain interfaces.ChainStateReader) + + // SignData requests the wallet to sign the hash of the given data + // It looks up the account specified either solely via its address contained within, + // or optionally with the aid of any location metadata from the embedded URL field. + // + // If the wallet requires additional authentication to sign the request (e.g. + // a password to decrypt the account, or a PIN code o verify the transaction), + // an AuthNeededError instance will be returned, containing infos for the user + // about which fields or actions are needed. The user may retry by providing + // the needed details via SignDataWithPassphrase, or by other means (e.g. unlock + // the account in a keystore). + SignData(account Account, mimeType string, data []byte) ([]byte, error) + + // SignDataWithPassphrase is identical to SignData, but also takes a password + // NOTE: there's a chance that an erroneous call might mistake the two strings, and + // supply password in the mimetype field, or vice versa. Thus, an implementation + // should never echo the mimetype or return the mimetype in the error-response + SignDataWithPassphrase(account Account, passphrase, mimeType string, data []byte) ([]byte, error) + + // SignText requests the wallet to sign the hash of a given piece of data, prefixed + // by the Ethereum prefix scheme + // It looks up the account specified either solely via its address contained within, + // or optionally with the aid of any location metadata from the embedded URL field. + // + // If the wallet requires additional authentication to sign the request (e.g. + // a password to decrypt the account, or a PIN code o verify the transaction), + // an AuthNeededError instance will be returned, containing infos for the user + // about which fields or actions are needed. The user may retry by providing + // the needed details via SignTextWithPassphrase, or by other means (e.g. unlock + // the account in a keystore). + // + // This method should return the signature in 'canonical' format, with v 0 or 1 + SignText(account Account, text []byte) ([]byte, error) + + // SignTextWithPassphrase is identical to Signtext, but also takes a password + SignTextWithPassphrase(account Account, passphrase string, hash []byte) ([]byte, error) + + // SignTx requests the wallet to sign the given transaction. + // + // It looks up the account specified either solely via its address contained within, + // or optionally with the aid of any location metadata from the embedded URL field. + // + // If the wallet requires additional authentication to sign the request (e.g. + // a password to decrypt the account, or a PIN code to verify the transaction), + // an AuthNeededError instance will be returned, containing infos for the user + // about which fields or actions are needed. The user may retry by providing + // the needed details via SignTxWithPassphrase, or by other means (e.g. unlock + // the account in a keystore). + SignTx(account Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) + + // SignTxWithPassphrase is identical to SignTx, but also takes a password + SignTxWithPassphrase(account Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) +} + +// Backend is a "wallet provider" that may contain a batch of accounts they can +// sign transactions with and upon request, do so. +type Backend interface { + // Wallets retrieves the list of wallets the backend is currently aware of. + // + // The returned wallets are not opened by default. For software HD wallets this + // means that no base seeds are decrypted, and for hardware wallets that no actual + // connection is established. + // + // The resulting wallet list will be sorted alphabetically based on its internal + // URL assigned by the backend. Since wallets (especially hardware) may come and + // go, the same wallet might appear at a different positions in the list during + // subsequent retrievals. + Wallets() []Wallet + + // Subscribe creates an async subscription to receive notifications when the + // backend detects the arrival or departure of a wallet. + Subscribe(sink chan<- WalletEvent) event.Subscription +} + +// TextHash is a helper function that calculates a hash for the given message that can be +// safely used to calculate a signature from. +// +// The hash is calulcated as +// keccak256("\x19Ethereum Signed Message:\n"${message length}${message}). +// +// This gives context to the signed message and prevents signing of transactions. +func TextHash(data []byte) []byte { + hash, _ := TextAndHash(data) + return hash +} + +// TextAndHash is a helper function that calculates a hash for the given message that can be +// safely used to calculate a signature from. +// +// The hash is calulcated as +// keccak256("\x19Ethereum Signed Message:\n"${message length}${message}). +// +// This gives context to the signed message and prevents signing of transactions. +func TextAndHash(data []byte) ([]byte, string) { + msg := fmt.Sprintf("\x19Ethereum Signed Message:\n%d%s", len(data), string(data)) + hasher := sha3.NewLegacyKeccak256() + hasher.Write([]byte(msg)) + return hasher.Sum(nil), msg +} + +// WalletEventType represents the different event types that can be fired by +// the wallet subscription subsystem. +type WalletEventType int + +const ( + // WalletArrived is fired when a new wallet is detected either via USB or via + // a filesystem event in the keystore. + WalletArrived WalletEventType = iota + + // WalletOpened is fired when a wallet is successfully opened with the purpose + // of starting any background processes such as automatic key derivation. + WalletOpened + + // WalletDropped + WalletDropped +) + +// WalletEvent is an event fired by an account backend when a wallet arrival or +// departure is detected. +type WalletEvent struct { + Wallet Wallet // Wallet instance arrived or departed + Kind WalletEventType // Event type that happened in the system +} diff --git a/accounts/accounts_test.go b/accounts/accounts_test.go new file mode 100644 index 0000000000..eeba28feb0 --- /dev/null +++ b/accounts/accounts_test.go @@ -0,0 +1,42 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +import ( + "bytes" + "testing" + + "github.com/ethereum/go-ethereum/common/hexutil" +) + +func TestTextHash(t *testing.T) { + hash := TextHash([]byte("Hello Joe")) + want := hexutil.MustDecode("0xa080337ae51c4e064c189e113edd0ba391df9206e2f49db658bb32cf2911730b") + if !bytes.Equal(hash, want) { + t.Fatalf("wrong hash: %x", hash) + } +} diff --git a/accounts/errors.go b/accounts/errors.go new file mode 100644 index 0000000000..597c1452ec --- /dev/null +++ b/accounts/errors.go @@ -0,0 +1,78 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +import ( + "errors" + "fmt" +) + +// ErrUnknownAccount is returned for any requested operation for which no backend +// provides the specified account. +var ErrUnknownAccount = errors.New("unknown account") + +// ErrUnknownWallet is returned for any requested operation for which no backend +// provides the specified wallet. +var ErrUnknownWallet = errors.New("unknown wallet") + +// ErrNotSupported is returned when an operation is requested from an account +// backend that it does not support. +var ErrNotSupported = errors.New("not supported") + +// ErrInvalidPassphrase is returned when a decryption operation receives a bad +// passphrase. +var ErrInvalidPassphrase = errors.New("invalid password") + +// ErrWalletAlreadyOpen is returned if a wallet is attempted to be opened the +// second time. +var ErrWalletAlreadyOpen = errors.New("wallet already open") + +// ErrWalletClosed is returned if a wallet is attempted to be opened the +// secodn time. +var ErrWalletClosed = errors.New("wallet closed") + +// AuthNeededError is returned by backends for signing requests where the user +// is required to provide further authentication before signing can succeed. +// +// This usually means either that a password needs to be supplied, or perhaps a +// one time PIN code displayed by some hardware device. +type AuthNeededError struct { + Needed string // Extra authentication the user needs to provide +} + +// NewAuthNeededError creates a new authentication error with the extra details +// about the needed fields set. +func NewAuthNeededError(needed string) error { + return &AuthNeededError{ + Needed: needed, + } +} + +// Error implements the standard error interface. +func (err *AuthNeededError) Error() string { + return fmt.Sprintf("authentication needed: %s", err.Needed) +} diff --git a/accounts/external/backend.go b/accounts/external/backend.go new file mode 100644 index 0000000000..cce3b8ff1e --- /dev/null +++ b/accounts/external/backend.go @@ -0,0 +1,284 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package external + +import ( + "fmt" + "math/big" + "sync" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ava-labs/subnet-evm/signer/core/apitypes" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" +) + +type ExternalBackend struct { + signers []accounts.Wallet +} + +func (eb *ExternalBackend) Wallets() []accounts.Wallet { + return eb.signers +} + +func NewExternalBackend(endpoint string) (*ExternalBackend, error) { + signer, err := NewExternalSigner(endpoint) + if err != nil { + return nil, err + } + return &ExternalBackend{ + signers: []accounts.Wallet{signer}, + }, nil +} + +func (eb *ExternalBackend) Subscribe(sink chan<- accounts.WalletEvent) event.Subscription { + return event.NewSubscription(func(quit <-chan struct{}) error { + <-quit + return nil + }) +} + +// ExternalSigner provides an API to interact with an external signer (clef) +// It proxies request to the external signer while forwarding relevant +// request headers +type ExternalSigner struct { + client *rpc.Client + endpoint string + status string + cacheMu sync.RWMutex + cache []accounts.Account +} + +func NewExternalSigner(endpoint string) (*ExternalSigner, error) { + client, err := rpc.Dial(endpoint) + if err != nil { + return nil, err + } + extsigner := &ExternalSigner{ + client: client, + endpoint: endpoint, + } + // Check if reachable + version, err := extsigner.pingVersion() + if err != nil { + return nil, err + } + extsigner.status = fmt.Sprintf("ok [version=%v]", version) + return extsigner, nil +} + +func (api *ExternalSigner) URL() accounts.URL { + return accounts.URL{ + Scheme: "extapi", + Path: api.endpoint, + } +} + +func (api *ExternalSigner) Status() (string, error) { + return api.status, nil +} + +func (api *ExternalSigner) Open(passphrase string) error { + return fmt.Errorf("operation not supported on external signers") +} + +func (api *ExternalSigner) Close() error { + return fmt.Errorf("operation not supported on external signers") +} + +func (api *ExternalSigner) Accounts() []accounts.Account { + var accnts []accounts.Account + res, err := api.listAccounts() + if err != nil { + log.Error("account listing failed", "error", err) + return accnts + } + for _, addr := range res { + accnts = append(accnts, accounts.Account{ + URL: accounts.URL{ + Scheme: "extapi", + Path: api.endpoint, + }, + Address: addr, + }) + } + api.cacheMu.Lock() + api.cache = accnts + api.cacheMu.Unlock() + return accnts +} + +func (api *ExternalSigner) Contains(account accounts.Account) bool { + api.cacheMu.RLock() + defer api.cacheMu.RUnlock() + if api.cache == nil { + // If we haven't already fetched the accounts, it's time to do so now + api.cacheMu.RUnlock() + api.Accounts() + api.cacheMu.RLock() + } + for _, a := range api.cache { + if a.Address == account.Address && (account.URL == (accounts.URL{}) || account.URL == api.URL()) { + return true + } + } + return false +} + +func (api *ExternalSigner) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error) { + return accounts.Account{}, fmt.Errorf("operation not supported on external signers") +} + +func (api *ExternalSigner) SelfDerive(bases []accounts.DerivationPath, chain interfaces.ChainStateReader) { + log.Error("operation SelfDerive not supported on external signers") +} + +func (api *ExternalSigner) signHash(account accounts.Account, hash []byte) ([]byte, error) { + return []byte{}, fmt.Errorf("operation not supported on external signers") +} + +// SignData signs keccak256(data). The mimetype parameter describes the type of data being signed +func (api *ExternalSigner) SignData(account accounts.Account, mimeType string, data []byte) ([]byte, error) { + var res hexutil.Bytes + signAddress := common.NewMixedcaseAddress(account.Address) + if err := api.client.Call(&res, "account_signData", + mimeType, + &signAddress, // Need to use the pointer here, because of how MarshalJSON is defined + hexutil.Encode(data)); err != nil { + return nil, err + } + // If V is on 27/28-form, convert to 0/1 for Clique + if mimeType == accounts.MimetypeClique && (res[64] == 27 || res[64] == 28) { + res[64] -= 27 // Transform V from 27/28 to 0/1 for Clique use + } + return res, nil +} + +func (api *ExternalSigner) SignText(account accounts.Account, text []byte) ([]byte, error) { + var signature hexutil.Bytes + signAddress := common.NewMixedcaseAddress(account.Address) + if err := api.client.Call(&signature, "account_signData", + accounts.MimetypeTextPlain, + &signAddress, // Need to use the pointer here, because of how MarshalJSON is defined + hexutil.Encode(text)); err != nil { + return nil, err + } + if signature[64] == 27 || signature[64] == 28 { + // If clef is used as a backend, it may already have transformed + // the signature to ethereum-type signature. + signature[64] -= 27 // Transform V from Ethereum-legacy to 0/1 + } + return signature, nil +} + +// signTransactionResult represents the signinig result returned by clef. +type signTransactionResult struct { + Raw hexutil.Bytes `json:"raw"` + Tx *types.Transaction `json:"tx"` +} + +// SignTx sends the transaction to the external signer. +// If chainID is nil, or tx.ChainID is zero, the chain ID will be assigned +// by the external signer. For non-legacy transactions, the chain ID of the +// transaction overrides the chainID parameter. +func (api *ExternalSigner) SignTx(account accounts.Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + data := hexutil.Bytes(tx.Data()) + var to *common.MixedcaseAddress + if tx.To() != nil { + t := common.NewMixedcaseAddress(*tx.To()) + to = &t + } + args := &apitypes.SendTxArgs{ + Data: &data, + Nonce: hexutil.Uint64(tx.Nonce()), + Value: hexutil.Big(*tx.Value()), + Gas: hexutil.Uint64(tx.Gas()), + To: to, + From: common.NewMixedcaseAddress(account.Address), + } + switch tx.Type() { + case types.LegacyTxType, types.AccessListTxType: + args.GasPrice = (*hexutil.Big)(tx.GasPrice()) + case types.DynamicFeeTxType: + args.MaxFeePerGas = (*hexutil.Big)(tx.GasFeeCap()) + args.MaxPriorityFeePerGas = (*hexutil.Big)(tx.GasTipCap()) + default: + return nil, fmt.Errorf("unsupported tx type %d", tx.Type()) + } + // We should request the default chain id that we're operating with + // (the chain we're executing on) + if chainID != nil && chainID.Sign() != 0 { + args.ChainID = (*hexutil.Big)(chainID) + } + if tx.Type() != types.LegacyTxType { + // However, if the user asked for a particular chain id, then we should + // use that instead. + if tx.ChainId().Sign() != 0 { + args.ChainID = (*hexutil.Big)(tx.ChainId()) + } + accessList := tx.AccessList() + args.AccessList = &accessList + } + var res signTransactionResult + if err := api.client.Call(&res, "account_signTransaction", args); err != nil { + return nil, err + } + return res.Tx, nil +} + +func (api *ExternalSigner) SignTextWithPassphrase(account accounts.Account, passphrase string, text []byte) ([]byte, error) { + return []byte{}, fmt.Errorf("password-operations not supported on external signers") +} + +func (api *ExternalSigner) SignTxWithPassphrase(account accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + return nil, fmt.Errorf("password-operations not supported on external signers") +} + +func (api *ExternalSigner) SignDataWithPassphrase(account accounts.Account, passphrase, mimeType string, data []byte) ([]byte, error) { + return nil, fmt.Errorf("password-operations not supported on external signers") +} + +func (api *ExternalSigner) listAccounts() ([]common.Address, error) { + var res []common.Address + if err := api.client.Call(&res, "account_list"); err != nil { + return nil, err + } + return res, nil +} + +func (api *ExternalSigner) pingVersion() (string, error) { + var v string + if err := api.client.Call(&v, "account_version"); err != nil { + return "", err + } + return v, nil +} diff --git a/accounts/hd.go b/accounts/hd.go new file mode 100644 index 0000000000..1b6a6d844e --- /dev/null +++ b/accounts/hd.go @@ -0,0 +1,162 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +import ( + "encoding/json" + "errors" + "fmt" + "math" + "math/big" + "strings" +) + +// DefaultRootDerivationPath is the root path to which custom derivation endpoints +// are appended. As such, the first account will be at m/44'/60'/0'/0, the second +// at m/44'/60'/0'/1, etc. +var DefaultRootDerivationPath = DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0} + +// DefaultBaseDerivationPath is the base path from which custom derivation endpoints +// are incremented. As such, the first account will be at m/44'/60'/0'/0/0, the second +// at m/44'/60'/0'/0/1, etc. +var DefaultBaseDerivationPath = DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0} + +// LegacyLedgerBaseDerivationPath is the legacy base path from which custom derivation +// endpoints are incremented. As such, the first account will be at m/44'/60'/0'/0, the +// second at m/44'/60'/0'/1, etc. +var LegacyLedgerBaseDerivationPath = DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0} + +// DerivationPath represents the computer friendly version of a hierarchical +// deterministic wallet account derivaion path. +// +// The BIP-32 spec https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki +// defines derivation paths to be of the form: +// +// m / purpose' / coin_type' / account' / change / address_index +// +// The BIP-44 spec https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki +// defines that the `purpose` be 44' (or 0x8000002C) for crypto currencies, and +// SLIP-44 https://github.com/satoshilabs/slips/blob/master/slip-0044.md assigns +// the `coin_type` 60' (or 0x8000003C) to Ethereum. +// +// The root path for Ethereum is m/44'/60'/0'/0 according to the specification +// from https://github.com/ethereum/EIPs/issues/84, albeit it's not set in stone +// yet whether accounts should increment the last component or the children of +// that. We will go with the simpler approach of incrementing the last component. +type DerivationPath []uint32 + +// ParseDerivationPath converts a user specified derivation path string to the +// internal binary representation. +// +// Full derivation paths need to start with the `m/` prefix, relative derivation +// paths (which will get appended to the default root path) must not have prefixes +// in front of the first element. Whitespace is ignored. +func ParseDerivationPath(path string) (DerivationPath, error) { + var result DerivationPath + + // Handle absolute or relative paths + components := strings.Split(path, "/") + switch { + case len(components) == 0: + return nil, errors.New("empty derivation path") + + case strings.TrimSpace(components[0]) == "": + return nil, errors.New("ambiguous path: use 'm/' prefix for absolute paths, or no leading '/' for relative ones") + + case strings.TrimSpace(components[0]) == "m": + components = components[1:] + + default: + result = append(result, DefaultRootDerivationPath...) + } + // All remaining components are relative, append one by one + if len(components) == 0 { + return nil, errors.New("empty derivation path") // Empty relative paths + } + for _, component := range components { + // Ignore any user added whitespace + component = strings.TrimSpace(component) + var value uint32 + + // Handle hardened paths + if strings.HasSuffix(component, "'") { + value = 0x80000000 + component = strings.TrimSpace(strings.TrimSuffix(component, "'")) + } + // Handle the non hardened component + bigval, ok := new(big.Int).SetString(component, 0) + if !ok { + return nil, fmt.Errorf("invalid component: %s", component) + } + max := math.MaxUint32 - value + if bigval.Sign() < 0 || bigval.Cmp(big.NewInt(int64(max))) > 0 { + if value == 0 { + return nil, fmt.Errorf("component %v out of allowed range [0, %d]", bigval, max) + } + return nil, fmt.Errorf("component %v out of allowed hardened range [0, %d]", bigval, max) + } + value += uint32(bigval.Uint64()) + + // Append and repeat + result = append(result, value) + } + return result, nil +} + +// String implements the stringer interface, converting a binary derivation path +// to its canonical representation. +func (path DerivationPath) String() string { + result := "m" + for _, component := range path { + var hardened bool + if component >= 0x80000000 { + component -= 0x80000000 + hardened = true + } + result = fmt.Sprintf("%s/%d", result, component) + if hardened { + result += "'" + } + } + return result +} + +// MarshalJSON turns a derivation path into its json-serialized string +func (path DerivationPath) MarshalJSON() ([]byte, error) { + return json.Marshal(path.String()) +} + +// UnmarshalJSON a json-serialized string back into a derivation path +func (path *DerivationPath) UnmarshalJSON(b []byte) error { + var dp string + var err error + if err = json.Unmarshal(b, &dp); err != nil { + return err + } + *path, err = ParseDerivationPath(dp) + return err +} diff --git a/accounts/hd_test.go b/accounts/hd_test.go new file mode 100644 index 0000000000..b1f4ea5807 --- /dev/null +++ b/accounts/hd_test.go @@ -0,0 +1,89 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +import ( + "reflect" + "testing" +) + +// Tests that HD derivation paths can be correctly parsed into our internal binary +// representation. +func TestHDPathParsing(t *testing.T) { + tests := []struct { + input string + output DerivationPath + }{ + // Plain absolute derivation paths + {"m/44'/60'/0'/0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}}, + {"m/44'/60'/0'/128", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 128}}, + {"m/44'/60'/0'/0'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}}, + {"m/44'/60'/0'/128'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 128}}, + {"m/2147483692/2147483708/2147483648/0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}}, + {"m/2147483692/2147483708/2147483648/2147483648", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}}, + + // Plain relative derivation paths + {"0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0}}, + {"128", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 128}}, + {"0'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0x80000000 + 0}}, + {"128'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0x80000000 + 128}}, + {"2147483648", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0x80000000 + 0}}, + + // Hexadecimal absolute derivation paths + {"m/0x2C'/0x3c'/0x00'/0x00", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}}, + {"m/0x2C'/0x3c'/0x00'/0x80", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 128}}, + {"m/0x2C'/0x3c'/0x00'/0x00'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}}, + {"m/0x2C'/0x3c'/0x00'/0x80'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 128}}, + {"m/0x8000002C/0x8000003c/0x80000000/0x00", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}}, + {"m/0x8000002C/0x8000003c/0x80000000/0x80000000", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0x80000000 + 0}}, + + // Hexadecimal relative derivation paths + {"0x00", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0}}, + {"0x80", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 128}}, + {"0x00'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0x80000000 + 0}}, + {"0x80'", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0x80000000 + 128}}, + {"0x80000000", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0, 0x80000000 + 0}}, + + // Weird inputs just to ensure they work + {" m / 44 '\n/\n 60 \n\n\t' /\n0 ' /\t\t 0", DerivationPath{0x80000000 + 44, 0x80000000 + 60, 0x80000000 + 0, 0}}, + + // Invalid derivation paths + {"", nil}, // Empty relative derivation path + {"m", nil}, // Empty absolute derivation path + {"m/", nil}, // Missing last derivation component + {"/44'/60'/0'/0", nil}, // Absolute path without m prefix, might be user error + {"m/2147483648'", nil}, // Overflows 32 bit integer + {"m/-1'", nil}, // Cannot contain negative number + } + for i, tt := range tests { + if path, err := ParseDerivationPath(tt.input); !reflect.DeepEqual(path, tt.output) { + t.Errorf("test %d: parse mismatch: have %v (%v), want %v", i, path, err, tt.output) + } else if path == nil && err == nil { + t.Errorf("test %d: nil path and error: %v", i, err) + } + } +} diff --git a/accounts/keystore/account_cache.go b/accounts/keystore/account_cache.go new file mode 100644 index 0000000000..75ad1961f0 --- /dev/null +++ b/accounts/keystore/account_cache.go @@ -0,0 +1,311 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "bufio" + "encoding/json" + "fmt" + "os" + "path/filepath" + "sort" + "strings" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + mapset "github.com/deckarep/golang-set" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +// Minimum amount of time between cache reloads. This limit applies if the platform does +// not support change notifications. It also applies if the keystore directory does not +// exist yet, the code will attempt to create a watcher at most this often. +const minReloadInterval = 2 * time.Second + +type accountsByURL []accounts.Account + +func (s accountsByURL) Len() int { return len(s) } +func (s accountsByURL) Less(i, j int) bool { return s[i].URL.Cmp(s[j].URL) < 0 } +func (s accountsByURL) Swap(i, j int) { s[i], s[j] = s[j], s[i] } + +// AmbiguousAddrError is returned when attempting to unlock +// an address for which more than one file exists. +type AmbiguousAddrError struct { + Addr common.Address + Matches []accounts.Account +} + +func (err *AmbiguousAddrError) Error() string { + files := "" + for i, a := range err.Matches { + files += a.URL.Path + if i < len(err.Matches)-1 { + files += ", " + } + } + return fmt.Sprintf("multiple keys match address (%s)", files) +} + +// accountCache is a live index of all accounts in the keystore. +type accountCache struct { + keydir string + watcher *watcher + mu sync.Mutex + all accountsByURL + byAddr map[common.Address][]accounts.Account + throttle *time.Timer + notify chan struct{} + fileC fileCache +} + +func newAccountCache(keydir string) (*accountCache, chan struct{}) { + ac := &accountCache{ + keydir: keydir, + byAddr: make(map[common.Address][]accounts.Account), + notify: make(chan struct{}, 1), + fileC: fileCache{all: mapset.NewThreadUnsafeSet()}, + } + ac.watcher = newWatcher(ac) + return ac, ac.notify +} + +func (ac *accountCache) accounts() []accounts.Account { + ac.maybeReload() + ac.mu.Lock() + defer ac.mu.Unlock() + cpy := make([]accounts.Account, len(ac.all)) + copy(cpy, ac.all) + return cpy +} + +func (ac *accountCache) hasAddress(addr common.Address) bool { + ac.maybeReload() + ac.mu.Lock() + defer ac.mu.Unlock() + return len(ac.byAddr[addr]) > 0 +} + +func (ac *accountCache) add(newAccount accounts.Account) { + ac.mu.Lock() + defer ac.mu.Unlock() + + i := sort.Search(len(ac.all), func(i int) bool { return ac.all[i].URL.Cmp(newAccount.URL) >= 0 }) + if i < len(ac.all) && ac.all[i] == newAccount { + return + } + // newAccount is not in the cache. + ac.all = append(ac.all, accounts.Account{}) + copy(ac.all[i+1:], ac.all[i:]) + ac.all[i] = newAccount + ac.byAddr[newAccount.Address] = append(ac.byAddr[newAccount.Address], newAccount) +} + +// note: removed needs to be unique here (i.e. both File and Address must be set). +func (ac *accountCache) delete(removed accounts.Account) { + ac.mu.Lock() + defer ac.mu.Unlock() + + ac.all = removeAccount(ac.all, removed) + if ba := removeAccount(ac.byAddr[removed.Address], removed); len(ba) == 0 { + delete(ac.byAddr, removed.Address) + } else { + ac.byAddr[removed.Address] = ba + } +} + +// deleteByFile removes an account referenced by the given path. +func (ac *accountCache) deleteByFile(path string) { + ac.mu.Lock() + defer ac.mu.Unlock() + i := sort.Search(len(ac.all), func(i int) bool { return ac.all[i].URL.Path >= path }) + + if i < len(ac.all) && ac.all[i].URL.Path == path { + removed := ac.all[i] + ac.all = append(ac.all[:i], ac.all[i+1:]...) + if ba := removeAccount(ac.byAddr[removed.Address], removed); len(ba) == 0 { + delete(ac.byAddr, removed.Address) + } else { + ac.byAddr[removed.Address] = ba + } + } +} + +func removeAccount(slice []accounts.Account, elem accounts.Account) []accounts.Account { + for i := range slice { + if slice[i] == elem { + return append(slice[:i], slice[i+1:]...) + } + } + return slice +} + +// find returns the cached account for address if there is a unique match. +// The exact matching rules are explained by the documentation of accounts.Account. +// Callers must hold ac.mu. +func (ac *accountCache) find(a accounts.Account) (accounts.Account, error) { + // Limit search to address candidates if possible. + matches := ac.all + if (a.Address != common.Address{}) { + matches = ac.byAddr[a.Address] + } + if a.URL.Path != "" { + // If only the basename is specified, complete the path. + if !strings.ContainsRune(a.URL.Path, filepath.Separator) { + a.URL.Path = filepath.Join(ac.keydir, a.URL.Path) + } + for i := range matches { + if matches[i].URL == a.URL { + return matches[i], nil + } + } + if (a.Address == common.Address{}) { + return accounts.Account{}, ErrNoMatch + } + } + switch len(matches) { + case 1: + return matches[0], nil + case 0: + return accounts.Account{}, ErrNoMatch + default: + err := &AmbiguousAddrError{Addr: a.Address, Matches: make([]accounts.Account, len(matches))} + copy(err.Matches, matches) + sort.Sort(accountsByURL(err.Matches)) + return accounts.Account{}, err + } +} + +func (ac *accountCache) maybeReload() { + ac.mu.Lock() + + if ac.watcher.running { + ac.mu.Unlock() + return // A watcher is running and will keep the cache up-to-date. + } + if ac.throttle == nil { + ac.throttle = time.NewTimer(0) + } else { + select { + case <-ac.throttle.C: + default: + ac.mu.Unlock() + return // The cache was reloaded recently. + } + } + // No watcher running, start it. + ac.watcher.start() + ac.throttle.Reset(minReloadInterval) + ac.mu.Unlock() + ac.scanAccounts() +} + +func (ac *accountCache) close() { + ac.mu.Lock() + ac.watcher.close() + if ac.throttle != nil { + ac.throttle.Stop() + } + if ac.notify != nil { + close(ac.notify) + ac.notify = nil + } + ac.mu.Unlock() +} + +// scanAccounts checks if any changes have occurred on the filesystem, and +// updates the account cache accordingly +func (ac *accountCache) scanAccounts() error { + // Scan the entire folder metadata for file changes + creates, deletes, updates, err := ac.fileC.scan(ac.keydir) + if err != nil { + log.Debug("Failed to reload keystore contents", "err", err) + return err + } + if creates.Cardinality() == 0 && deletes.Cardinality() == 0 && updates.Cardinality() == 0 { + return nil + } + // Create a helper method to scan the contents of the key files + var ( + buf = new(bufio.Reader) + key struct { + Address string `json:"address"` + } + ) + readAccount := func(path string) *accounts.Account { + fd, err := os.Open(path) + if err != nil { + log.Trace("Failed to open keystore file", "path", path, "err", err) + return nil + } + defer fd.Close() + buf.Reset(fd) + // Parse the address. + key.Address = "" + err = json.NewDecoder(buf).Decode(&key) + addr := common.HexToAddress(key.Address) + switch { + case err != nil: + log.Debug("Failed to decode keystore key", "path", path, "err", err) + case addr == common.Address{}: + log.Debug("Failed to decode keystore key", "path", path, "err", "missing or zero address") + default: + return &accounts.Account{ + Address: addr, + URL: accounts.URL{Scheme: KeyStoreScheme, Path: path}, + } + } + return nil + } + // Process all the file diffs + start := time.Now() + + for _, p := range creates.ToSlice() { + if a := readAccount(p.(string)); a != nil { + ac.add(*a) + } + } + for _, p := range deletes.ToSlice() { + ac.deleteByFile(p.(string)) + } + for _, p := range updates.ToSlice() { + path := p.(string) + ac.deleteByFile(path) + if a := readAccount(path); a != nil { + ac.add(*a) + } + } + end := time.Now() + + select { + case ac.notify <- struct{}{}: + default: + } + log.Trace("Handled keystore changes", "time", end.Sub(start)) + return nil +} diff --git a/accounts/keystore/account_cache_test.go b/accounts/keystore/account_cache_test.go new file mode 100644 index 0000000000..ae3c0e5920 --- /dev/null +++ b/accounts/keystore/account_cache_test.go @@ -0,0 +1,417 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "fmt" + "math/rand" + "os" + "path/filepath" + "reflect" + "sort" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/cespare/cp" + "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/common" +) + +var ( + cachetestDir, _ = filepath.Abs(filepath.Join("testdata", "keystore")) + cachetestAccounts = []accounts.Account{ + { + Address: common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(cachetestDir, "UTC--2016-03-22T12-57-55.920751759Z--7ef5a6135f1fd6a02593eedc869c6d41d934aef8")}, + }, + { + Address: common.HexToAddress("f466859ead1932d743d622cb74fc058882e8648a"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(cachetestDir, "aaa")}, + }, + { + Address: common.HexToAddress("289d485d9771714cce91d3393d764e1311907acc"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(cachetestDir, "zzz")}, + }, + } +) + +// TODO: fix flaky test +// func TestWatchNewFile(t *testing.T) { +// t.Parallel() +// +// dir, ks := tmpKeyStore(t, false) +// defer os.RemoveAll(dir) +// +// // Ensure the watcher is started before adding any files. +// ks.Accounts() +// time.Sleep(2000 * time.Millisecond) +// +// // Move in the files. +// wantAccounts := make([]accounts.Account, len(cachetestAccounts)) +// for i := range cachetestAccounts { +// wantAccounts[i] = accounts.Account{ +// Address: cachetestAccounts[i].Address, +// URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(dir, filepath.Base(cachetestAccounts[i].URL.Path))}, +// } +// if err := cp.CopyFile(wantAccounts[i].URL.Path, cachetestAccounts[i].URL.Path); err != nil { +// t.Fatal(err) +// } +// } +// +// // ks should see the accounts. +// var list []accounts.Account +// for { +// list = ks.Accounts() +// if reflect.DeepEqual(list, wantAccounts) { +// // ks should have also received change notifications +// select { +// case <-ks.changes: +// default: +// t.Fatalf("wasn't notified of new accounts") +// } +// return +// } +// time.Sleep(500 * time.Millisecond) +// } +// } + +func TestWatchNoDir(t *testing.T) { + t.Parallel() + + // Create ks but not the directory that it watches. + rand.Seed(time.Now().UnixNano()) + dir := filepath.Join(os.TempDir(), fmt.Sprintf("eth-keystore-watchnodir-test-%d-%d", os.Getpid(), rand.Int())) + ks := NewKeyStore(dir, LightScryptN, LightScryptP) + + list := ks.Accounts() + if len(list) > 0 { + t.Error("initial account list not empty:", list) + } + time.Sleep(100 * time.Millisecond) + + // Create the directory and copy a key file into it. + os.MkdirAll(dir, 0700) + defer os.RemoveAll(dir) + file := filepath.Join(dir, "aaa") + if err := cp.CopyFile(file, cachetestAccounts[0].URL.Path); err != nil { + t.Fatal(err) + } + + // ks should see the account. + wantAccounts := []accounts.Account{cachetestAccounts[0]} + wantAccounts[0].URL = accounts.URL{Scheme: KeyStoreScheme, Path: file} + for d := 200 * time.Millisecond; d < 8*time.Second; d *= 2 { + list = ks.Accounts() + if reflect.DeepEqual(list, wantAccounts) { + // ks should have also received change notifications + select { + case <-ks.changes: + default: + t.Fatalf("wasn't notified of new accounts") + } + return + } + time.Sleep(d) + } + t.Errorf("\ngot %v\nwant %v", list, wantAccounts) +} + +func TestCacheInitialReload(t *testing.T) { + cache, _ := newAccountCache(cachetestDir) + accounts := cache.accounts() + if !reflect.DeepEqual(accounts, cachetestAccounts) { + t.Fatalf("got initial accounts: %swant %s", spew.Sdump(accounts), spew.Sdump(cachetestAccounts)) + } +} + +func TestCacheAddDeleteOrder(t *testing.T) { + cache, _ := newAccountCache("testdata/no-such-dir") + cache.watcher.running = true // prevent unexpected reloads + + accs := []accounts.Account{ + { + Address: common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: "-309830980"}, + }, + { + Address: common.HexToAddress("2cac1adea150210703ba75ed097ddfe24e14f213"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: "ggg"}, + }, + { + Address: common.HexToAddress("8bda78331c916a08481428e4b07c96d3e916d165"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: "zzzzzz-the-very-last-one.keyXXX"}, + }, + { + Address: common.HexToAddress("d49ff4eeb0b2686ed89c0fc0f2b6ea533ddbbd5e"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: "SOMETHING.key"}, + }, + { + Address: common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: "UTC--2016-03-22T12-57-55.920751759Z--7ef5a6135f1fd6a02593eedc869c6d41d934aef8"}, + }, + { + Address: common.HexToAddress("f466859ead1932d743d622cb74fc058882e8648a"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: "aaa"}, + }, + { + Address: common.HexToAddress("289d485d9771714cce91d3393d764e1311907acc"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: "zzz"}, + }, + } + for _, a := range accs { + cache.add(a) + } + // Add some of them twice to check that they don't get reinserted. + cache.add(accs[0]) + cache.add(accs[2]) + + // Check that the account list is sorted by filename. + wantAccounts := make([]accounts.Account, len(accs)) + copy(wantAccounts, accs) + sort.Sort(accountsByURL(wantAccounts)) + list := cache.accounts() + if !reflect.DeepEqual(list, wantAccounts) { + t.Fatalf("got accounts: %s\nwant %s", spew.Sdump(accs), spew.Sdump(wantAccounts)) + } + for _, a := range accs { + if !cache.hasAddress(a.Address) { + t.Errorf("expected hasAccount(%x) to return true", a.Address) + } + } + if cache.hasAddress(common.HexToAddress("fd9bd350f08ee3c0c19b85a8e16114a11a60aa4e")) { + t.Errorf("expected hasAccount(%x) to return false", common.HexToAddress("fd9bd350f08ee3c0c19b85a8e16114a11a60aa4e")) + } + + // Delete a few keys from the cache. + for i := 0; i < len(accs); i += 2 { + cache.delete(wantAccounts[i]) + } + cache.delete(accounts.Account{Address: common.HexToAddress("fd9bd350f08ee3c0c19b85a8e16114a11a60aa4e"), URL: accounts.URL{Scheme: KeyStoreScheme, Path: "something"}}) + + // Check content again after deletion. + wantAccountsAfterDelete := []accounts.Account{ + wantAccounts[1], + wantAccounts[3], + wantAccounts[5], + } + list = cache.accounts() + if !reflect.DeepEqual(list, wantAccountsAfterDelete) { + t.Fatalf("got accounts after delete: %s\nwant %s", spew.Sdump(list), spew.Sdump(wantAccountsAfterDelete)) + } + for _, a := range wantAccountsAfterDelete { + if !cache.hasAddress(a.Address) { + t.Errorf("expected hasAccount(%x) to return true", a.Address) + } + } + if cache.hasAddress(wantAccounts[0].Address) { + t.Errorf("expected hasAccount(%x) to return false", wantAccounts[0].Address) + } +} + +func TestCacheFind(t *testing.T) { + dir := filepath.Join("testdata", "dir") + cache, _ := newAccountCache(dir) + cache.watcher.running = true // prevent unexpected reloads + + accs := []accounts.Account{ + { + Address: common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(dir, "a.key")}, + }, + { + Address: common.HexToAddress("2cac1adea150210703ba75ed097ddfe24e14f213"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(dir, "b.key")}, + }, + { + Address: common.HexToAddress("d49ff4eeb0b2686ed89c0fc0f2b6ea533ddbbd5e"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(dir, "c.key")}, + }, + { + Address: common.HexToAddress("d49ff4eeb0b2686ed89c0fc0f2b6ea533ddbbd5e"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(dir, "c2.key")}, + }, + } + for _, a := range accs { + cache.add(a) + } + + nomatchAccount := accounts.Account{ + Address: common.HexToAddress("f466859ead1932d743d622cb74fc058882e8648a"), + URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Join(dir, "something")}, + } + tests := []struct { + Query accounts.Account + WantResult accounts.Account + WantError error + }{ + // by address + {Query: accounts.Account{Address: accs[0].Address}, WantResult: accs[0]}, + // by file + {Query: accounts.Account{URL: accs[0].URL}, WantResult: accs[0]}, + // by basename + {Query: accounts.Account{URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Base(accs[0].URL.Path)}}, WantResult: accs[0]}, + // by file and address + {Query: accs[0], WantResult: accs[0]}, + // ambiguous address, tie resolved by file + {Query: accs[2], WantResult: accs[2]}, + // ambiguous address error + { + Query: accounts.Account{Address: accs[2].Address}, + WantError: &AmbiguousAddrError{ + Addr: accs[2].Address, + Matches: []accounts.Account{accs[2], accs[3]}, + }, + }, + // no match error + {Query: nomatchAccount, WantError: ErrNoMatch}, + {Query: accounts.Account{URL: nomatchAccount.URL}, WantError: ErrNoMatch}, + {Query: accounts.Account{URL: accounts.URL{Scheme: KeyStoreScheme, Path: filepath.Base(nomatchAccount.URL.Path)}}, WantError: ErrNoMatch}, + {Query: accounts.Account{Address: nomatchAccount.Address}, WantError: ErrNoMatch}, + } + for i, test := range tests { + a, err := cache.find(test.Query) + if !reflect.DeepEqual(err, test.WantError) { + t.Errorf("test %d: error mismatch for query %v\ngot %q\nwant %q", i, test.Query, err, test.WantError) + continue + } + if a != test.WantResult { + t.Errorf("test %d: result mismatch for query %v\ngot %v\nwant %v", i, test.Query, a, test.WantResult) + continue + } + } +} + +// TODO: fix flaky test +// func waitForAccounts(wantAccounts []accounts.Account, ks *KeyStore) error { +// var list []accounts.Account +// for d := 200 * time.Millisecond; d < 8*time.Second; d *= 2 { +// list = ks.Accounts() +// if reflect.DeepEqual(list, wantAccounts) { +// // ks should have also received change notifications +// select { +// case <-ks.changes: +// default: +// return fmt.Errorf("wasn't notified of new accounts") +// } +// return nil +// } +// time.Sleep(d) +// } +// return fmt.Errorf("\ngot %v\nwant %v", list, wantAccounts) +// } +// +// +// TestUpdatedKeyfileContents tests that updating the contents of a keystore file +// is noticed by the watcher, and the account cache is updated accordingly +// func TestUpdatedKeyfileContents(t *testing.T) { +// t.Parallel() +// +// // Create a temporary kesytore to test with +// rand.Seed(time.Now().UnixNano()) +// dir := filepath.Join(os.TempDir(), fmt.Sprintf("eth-keystore-watch-test-%d-%d", os.Getpid(), rand.Int())) +// ks := NewKeyStore(dir, LightScryptN, LightScryptP) +// +// list := ks.Accounts() +// if len(list) > 0 { +// t.Error("initial account list not empty:", list) +// } +// time.Sleep(100 * time.Millisecond) +// +// // Create the directory and copy a key file into it. +// os.MkdirAll(dir, 0700) +// defer os.RemoveAll(dir) +// file := filepath.Join(dir, "aaa") +// +// // Place one of our testfiles in there +// if err := cp.CopyFile(file, cachetestAccounts[0].URL.Path); err != nil { +// t.Fatal(err) +// } +// +// // ks should see the account. +// wantAccounts := []accounts.Account{cachetestAccounts[0]} +// wantAccounts[0].URL = accounts.URL{Scheme: KeyStoreScheme, Path: file} +// if err := waitForAccounts(wantAccounts, ks); err != nil { +// t.Error(err) +// return +// } +// +// // needed so that modTime of `file` is different to its current value after forceCopyFile +// time.Sleep(1000 * time.Millisecond) +// +// // Now replace file contents +// if err := forceCopyFile(file, cachetestAccounts[1].URL.Path); err != nil { +// t.Fatal(err) +// return +// } +// wantAccounts = []accounts.Account{cachetestAccounts[1]} +// wantAccounts[0].URL = accounts.URL{Scheme: KeyStoreScheme, Path: file} +// if err := waitForAccounts(wantAccounts, ks); err != nil { +// t.Errorf("First replacement failed") +// t.Error(err) +// return +// } +// +// // needed so that modTime of `file` is different to its current value after forceCopyFile +// time.Sleep(1000 * time.Millisecond) +// +// // Now replace file contents again +// if err := forceCopyFile(file, cachetestAccounts[2].URL.Path); err != nil { +// t.Fatal(err) +// return +// } +// wantAccounts = []accounts.Account{cachetestAccounts[2]} +// wantAccounts[0].URL = accounts.URL{Scheme: KeyStoreScheme, Path: file} +// if err := waitForAccounts(wantAccounts, ks); err != nil { +// t.Errorf("Second replacement failed") +// t.Error(err) +// return +// } +// +// // needed so that modTime of `file` is different to its current value after ioutil.WriteFile +// time.Sleep(1000 * time.Millisecond) +// +// // Now replace file contents with crap +// if err := ioutil.WriteFile(file, []byte("foo"), 0644); err != nil { +// t.Fatal(err) +// return +// } +// if err := waitForAccounts([]accounts.Account{}, ks); err != nil { +// t.Errorf("Emptying account file failed") +// t.Error(err) +// return +// } +// } +// +// // forceCopyFile is like cp.CopyFile, but doesn't complain if the destination exists. +// func forceCopyFile(dst, src string) error { +// data, err := ioutil.ReadFile(src) +// if err != nil { +// return err +// } +// return ioutil.WriteFile(dst, data, 0644) +// } diff --git a/accounts/keystore/file_cache.go b/accounts/keystore/file_cache.go new file mode 100644 index 0000000000..7cc4a01f39 --- /dev/null +++ b/accounts/keystore/file_cache.go @@ -0,0 +1,112 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "io/ioutil" + "os" + "path/filepath" + "strings" + "sync" + "time" + + mapset "github.com/deckarep/golang-set" + "github.com/ethereum/go-ethereum/log" +) + +// fileCache is a cache of files seen during scan of keystore. +type fileCache struct { + all mapset.Set // Set of all files from the keystore folder + lastMod time.Time // Last time instance when a file was modified + mu sync.Mutex +} + +// scan performs a new scan on the given directory, compares against the already +// cached filenames, and returns file sets: creates, deletes, updates. +func (fc *fileCache) scan(keyDir string) (mapset.Set, mapset.Set, mapset.Set, error) { + t0 := time.Now() + + // List all the failes from the keystore folder + files, err := ioutil.ReadDir(keyDir) + if err != nil { + return nil, nil, nil, err + } + t1 := time.Now() + + fc.mu.Lock() + defer fc.mu.Unlock() + + // Iterate all the files and gather their metadata + all := mapset.NewThreadUnsafeSet() + mods := mapset.NewThreadUnsafeSet() + + var newLastMod time.Time + for _, fi := range files { + path := filepath.Join(keyDir, fi.Name()) + // Skip any non-key files from the folder + if nonKeyFile(fi) { + log.Trace("Ignoring file on account scan", "path", path) + continue + } + // Gather the set of all and fresly modified files + all.Add(path) + + modified := fi.ModTime() + if modified.After(fc.lastMod) { + mods.Add(path) + } + if modified.After(newLastMod) { + newLastMod = modified + } + } + t2 := time.Now() + + // Update the tracked files and return the three sets + deletes := fc.all.Difference(all) // Deletes = previous - current + creates := all.Difference(fc.all) // Creates = current - previous + updates := mods.Difference(creates) // Updates = modified - creates + + fc.all, fc.lastMod = all, newLastMod + t3 := time.Now() + + // Report on the scanning stats and return + log.Debug("FS scan times", "list", t1.Sub(t0), "set", t2.Sub(t1), "diff", t3.Sub(t2)) + return creates, deletes, updates, nil +} + +// nonKeyFile ignores editor backups, hidden files and folders/symlinks. +func nonKeyFile(fi os.FileInfo) bool { + // Skip editor backups and UNIX-style hidden files. + if strings.HasSuffix(fi.Name(), "~") || strings.HasPrefix(fi.Name(), ".") { + return true + } + // Skip misc special files, directories (yes, symlinks too). + if fi.IsDir() || fi.Mode()&os.ModeType != 0 { + return true + } + return false +} diff --git a/accounts/keystore/key.go b/accounts/keystore/key.go new file mode 100644 index 0000000000..81885cc615 --- /dev/null +++ b/accounts/keystore/key.go @@ -0,0 +1,252 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "bytes" + "crypto/ecdsa" + "encoding/hex" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "strings" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/google/uuid" +) + +const ( + version = 3 +) + +type Key struct { + Id uuid.UUID // Version 4 "random" for unique id not derived from key data + // to simplify lookups we also store the address + Address common.Address + // we only store privkey as pubkey/address can be derived from it + // privkey in this struct is always in plaintext + PrivateKey *ecdsa.PrivateKey +} + +type keyStore interface { + // Loads and decrypts the key from disk. + GetKey(addr common.Address, filename string, auth string) (*Key, error) + // Writes and encrypts the key. + StoreKey(filename string, k *Key, auth string) error + // Joins filename with the key directory unless it is already absolute. + JoinPath(filename string) string +} + +type plainKeyJSON struct { + Address string `json:"address"` + PrivateKey string `json:"privatekey"` + Id string `json:"id"` + Version int `json:"version"` +} + +type encryptedKeyJSONV3 struct { + Address string `json:"address"` + Crypto CryptoJSON `json:"crypto"` + Id string `json:"id"` + Version int `json:"version"` +} + +type encryptedKeyJSONV1 struct { + Address string `json:"address"` + Crypto CryptoJSON `json:"crypto"` + Id string `json:"id"` + Version string `json:"version"` +} + +type CryptoJSON struct { + Cipher string `json:"cipher"` + CipherText string `json:"ciphertext"` + CipherParams cipherparamsJSON `json:"cipherparams"` + KDF string `json:"kdf"` + KDFParams map[string]interface{} `json:"kdfparams"` + MAC string `json:"mac"` +} + +type cipherparamsJSON struct { + IV string `json:"iv"` +} + +func (k *Key) MarshalJSON() (j []byte, err error) { + jStruct := plainKeyJSON{ + hex.EncodeToString(k.Address[:]), + hex.EncodeToString(crypto.FromECDSA(k.PrivateKey)), + k.Id.String(), + version, + } + j, err = json.Marshal(jStruct) + return j, err +} + +func (k *Key) UnmarshalJSON(j []byte) (err error) { + keyJSON := new(plainKeyJSON) + err = json.Unmarshal(j, &keyJSON) + if err != nil { + return err + } + + u := new(uuid.UUID) + *u, err = uuid.Parse(keyJSON.Id) + if err != nil { + return err + } + k.Id = *u + addr, err := hex.DecodeString(keyJSON.Address) + if err != nil { + return err + } + privkey, err := crypto.HexToECDSA(keyJSON.PrivateKey) + if err != nil { + return err + } + + k.Address = common.BytesToAddress(addr) + k.PrivateKey = privkey + + return nil +} + +func NewKeyFromECDSA(privateKeyECDSA *ecdsa.PrivateKey) *Key { + return newKeyFromECDSA(privateKeyECDSA) +} + +func newKeyFromECDSA(privateKeyECDSA *ecdsa.PrivateKey) *Key { + id, err := uuid.NewRandom() + if err != nil { + panic(fmt.Sprintf("Could not create random uuid: %v", err)) + } + key := &Key{ + Id: id, + Address: crypto.PubkeyToAddress(privateKeyECDSA.PublicKey), + PrivateKey: privateKeyECDSA, + } + return key +} + +// NewKeyForDirectICAP generates a key whose address fits into < 155 bits so it can fit +// into the Direct ICAP spec. for simplicity and easier compatibility with other libs, we +// retry until the first byte is 0. +func NewKeyForDirectICAP(rand io.Reader) *Key { + randBytes := make([]byte, 64) + _, err := rand.Read(randBytes) + if err != nil { + panic("key generation: could not read from random source: " + err.Error()) + } + reader := bytes.NewReader(randBytes) + privateKeyECDSA, err := ecdsa.GenerateKey(crypto.S256(), reader) + if err != nil { + panic("key generation: ecdsa.GenerateKey failed: " + err.Error()) + } + key := newKeyFromECDSA(privateKeyECDSA) + if !strings.HasPrefix(key.Address.Hex(), "0x00") { + return NewKeyForDirectICAP(rand) + } + return key +} + +func NewKey(rand io.Reader) (*Key, error) { + privateKeyECDSA, err := ecdsa.GenerateKey(crypto.S256(), rand) + if err != nil { + return nil, err + } + return newKeyFromECDSA(privateKeyECDSA), nil +} + +func storeNewKey(ks keyStore, rand io.Reader, auth string) (*Key, accounts.Account, error) { + key, err := NewKey(rand) + if err != nil { + return nil, accounts.Account{}, err + } + a := accounts.Account{ + Address: key.Address, + URL: accounts.URL{Scheme: KeyStoreScheme, Path: ks.JoinPath(keyFileName(key.Address))}, + } + if err := ks.StoreKey(a.URL.Path, key, auth); err != nil { + zeroKey(key.PrivateKey) + return nil, a, err + } + return key, a, err +} + +func writeTemporaryKeyFile(file string, content []byte) (string, error) { + // Create the keystore directory with appropriate permissions + // in case it is not present yet. + const dirPerm = 0700 + if err := os.MkdirAll(filepath.Dir(file), dirPerm); err != nil { + return "", err + } + // Atomic write: create a temporary hidden file first + // then move it into place. TempFile assigns mode 0600. + f, err := ioutil.TempFile(filepath.Dir(file), "."+filepath.Base(file)+".tmp") + if err != nil { + return "", err + } + if _, err := f.Write(content); err != nil { + f.Close() + os.Remove(f.Name()) + return "", err + } + f.Close() + return f.Name(), nil +} + +func writeKeyFile(file string, content []byte) error { + name, err := writeTemporaryKeyFile(file, content) + if err != nil { + return err + } + return os.Rename(name, file) +} + +// keyFileName implements the naming convention for keyfiles: +// UTC---
+func keyFileName(keyAddr common.Address) string { + ts := time.Now().UTC() + return fmt.Sprintf("UTC--%s--%s", toISO8601(ts), hex.EncodeToString(keyAddr[:])) +} + +func toISO8601(t time.Time) string { + var tz string + name, offset := t.Zone() + if name == "UTC" { + tz = "Z" + } else { + tz = fmt.Sprintf("%03d00", offset/3600) + } + return fmt.Sprintf("%04d-%02d-%02dT%02d-%02d-%02d.%09d%s", + t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second(), t.Nanosecond(), tz) +} diff --git a/accounts/keystore/keystore.go b/accounts/keystore/keystore.go new file mode 100644 index 0000000000..74c7053b56 --- /dev/null +++ b/accounts/keystore/keystore.go @@ -0,0 +1,517 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package keystore implements encrypted storage of secp256k1 private keys. +// +// Keys are stored as encrypted JSON files according to the Web3 Secret Storage specification. +// See https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition for more information. +package keystore + +import ( + "crypto/ecdsa" + crand "crypto/rand" + "errors" + "math/big" + "os" + "path/filepath" + "reflect" + "runtime" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/event" +) + +var ( + ErrLocked = accounts.NewAuthNeededError("password or unlock") + ErrNoMatch = errors.New("no key for given address or file") + ErrDecrypt = errors.New("could not decrypt key with given password") + + // ErrAccountAlreadyExists is returned if an account attempted to import is + // already present in the keystore. + ErrAccountAlreadyExists = errors.New("account already exists") +) + +// KeyStoreType is the reflect type of a keystore backend. +var KeyStoreType = reflect.TypeOf(&KeyStore{}) + +// KeyStoreScheme is the protocol scheme prefixing account and wallet URLs. +const KeyStoreScheme = "keystore" + +// Maximum time between wallet refreshes (if filesystem notifications don't work). +const walletRefreshCycle = 3 * time.Second + +// KeyStore manages a key storage directory on disk. +type KeyStore struct { + storage keyStore // Storage backend, might be cleartext or encrypted + cache *accountCache // In-memory account cache over the filesystem storage + changes chan struct{} // Channel receiving change notifications from the cache + unlocked map[common.Address]*unlocked // Currently unlocked account (decrypted private keys) + + wallets []accounts.Wallet // Wallet wrappers around the individual key files + updateFeed event.Feed // Event feed to notify wallet additions/removals + updateScope event.SubscriptionScope // Subscription scope tracking current live listeners + updating bool // Whether the event notification loop is running + + mu sync.RWMutex + importMu sync.Mutex // Import Mutex locks the import to prevent two insertions from racing +} + +type unlocked struct { + *Key + abort chan struct{} +} + +// NewKeyStore creates a keystore for the given directory. +func NewKeyStore(keydir string, scryptN, scryptP int) *KeyStore { + keydir, _ = filepath.Abs(keydir) + ks := &KeyStore{storage: &keyStorePassphrase{keydir, scryptN, scryptP, false}} + ks.init(keydir) + return ks +} + +// NewPlaintextKeyStore creates a keystore for the given directory. +// Deprecated: Use NewKeyStore. +func NewPlaintextKeyStore(keydir string) *KeyStore { + keydir, _ = filepath.Abs(keydir) + ks := &KeyStore{storage: &keyStorePlain{keydir}} + ks.init(keydir) + return ks +} + +func (ks *KeyStore) init(keydir string) { + // Lock the mutex since the account cache might call back with events + ks.mu.Lock() + defer ks.mu.Unlock() + + // Initialize the set of unlocked keys and the account cache + ks.unlocked = make(map[common.Address]*unlocked) + ks.cache, ks.changes = newAccountCache(keydir) + + // TODO: In order for this finalizer to work, there must be no references + // to ks. addressCache doesn't keep a reference but unlocked keys do, + // so the finalizer will not trigger until all timed unlocks have expired. + runtime.SetFinalizer(ks, func(m *KeyStore) { + m.cache.close() + }) + // Create the initial list of wallets from the cache + accs := ks.cache.accounts() + ks.wallets = make([]accounts.Wallet, len(accs)) + for i := 0; i < len(accs); i++ { + ks.wallets[i] = &keystoreWallet{account: accs[i], keystore: ks} + } +} + +// Wallets implements accounts.Backend, returning all single-key wallets from the +// keystore directory. +func (ks *KeyStore) Wallets() []accounts.Wallet { + // Make sure the list of wallets is in sync with the account cache + ks.refreshWallets() + + ks.mu.RLock() + defer ks.mu.RUnlock() + + cpy := make([]accounts.Wallet, len(ks.wallets)) + copy(cpy, ks.wallets) + return cpy +} + +// refreshWallets retrieves the current account list and based on that does any +// necessary wallet refreshes. +func (ks *KeyStore) refreshWallets() { + // Retrieve the current list of accounts + ks.mu.Lock() + accs := ks.cache.accounts() + + // Transform the current list of wallets into the new one + var ( + wallets = make([]accounts.Wallet, 0, len(accs)) + events []accounts.WalletEvent + ) + + for _, account := range accs { + // Drop wallets while they were in front of the next account + for len(ks.wallets) > 0 && ks.wallets[0].URL().Cmp(account.URL) < 0 { + events = append(events, accounts.WalletEvent{Wallet: ks.wallets[0], Kind: accounts.WalletDropped}) + ks.wallets = ks.wallets[1:] + } + // If there are no more wallets or the account is before the next, wrap new wallet + if len(ks.wallets) == 0 || ks.wallets[0].URL().Cmp(account.URL) > 0 { + wallet := &keystoreWallet{account: account, keystore: ks} + + events = append(events, accounts.WalletEvent{Wallet: wallet, Kind: accounts.WalletArrived}) + wallets = append(wallets, wallet) + continue + } + // If the account is the same as the first wallet, keep it + if ks.wallets[0].Accounts()[0] == account { + wallets = append(wallets, ks.wallets[0]) + ks.wallets = ks.wallets[1:] + continue + } + } + // Drop any leftover wallets and set the new batch + for _, wallet := range ks.wallets { + events = append(events, accounts.WalletEvent{Wallet: wallet, Kind: accounts.WalletDropped}) + } + ks.wallets = wallets + ks.mu.Unlock() + + // Fire all wallet events and return + for _, event := range events { + ks.updateFeed.Send(event) + } +} + +// Subscribe implements accounts.Backend, creating an async subscription to +// receive notifications on the addition or removal of keystore wallets. +func (ks *KeyStore) Subscribe(sink chan<- accounts.WalletEvent) event.Subscription { + // We need the mutex to reliably start/stop the update loop + ks.mu.Lock() + defer ks.mu.Unlock() + + // Subscribe the caller and track the subscriber count + sub := ks.updateScope.Track(ks.updateFeed.Subscribe(sink)) + + // Subscribers require an active notification loop, start it + if !ks.updating { + ks.updating = true + go ks.updater() + } + return sub +} + +// updater is responsible for maintaining an up-to-date list of wallets stored in +// the keystore, and for firing wallet addition/removal events. It listens for +// account change events from the underlying account cache, and also periodically +// forces a manual refresh (only triggers for systems where the filesystem notifier +// is not running). +func (ks *KeyStore) updater() { + for { + // Wait for an account update or a refresh timeout + select { + case <-ks.changes: + case <-time.After(walletRefreshCycle): + } + // Run the wallet refresher + ks.refreshWallets() + + // If all our subscribers left, stop the updater + ks.mu.Lock() + if ks.updateScope.Count() == 0 { + ks.updating = false + ks.mu.Unlock() + return + } + ks.mu.Unlock() + } +} + +// HasAddress reports whether a key with the given address is present. +func (ks *KeyStore) HasAddress(addr common.Address) bool { + return ks.cache.hasAddress(addr) +} + +// Accounts returns all key files present in the directory. +func (ks *KeyStore) Accounts() []accounts.Account { + return ks.cache.accounts() +} + +// Delete deletes the key matched by account if the passphrase is correct. +// If the account contains no filename, the address must match a unique key. +func (ks *KeyStore) Delete(a accounts.Account, passphrase string) error { + // Decrypting the key isn't really necessary, but we do + // it anyway to check the password and zero out the key + // immediately afterwards. + a, key, err := ks.getDecryptedKey(a, passphrase) + if key != nil { + zeroKey(key.PrivateKey) + } + if err != nil { + return err + } + // The order is crucial here. The key is dropped from the + // cache after the file is gone so that a reload happening in + // between won't insert it into the cache again. + err = os.Remove(a.URL.Path) + if err == nil { + ks.cache.delete(a) + ks.refreshWallets() + } + return err +} + +// SignHash calculates a ECDSA signature for the given hash. The produced +// signature is in the [R || S || V] format where V is 0 or 1. +func (ks *KeyStore) SignHash(a accounts.Account, hash []byte) ([]byte, error) { + // Look up the key to sign with and abort if it cannot be found + ks.mu.RLock() + defer ks.mu.RUnlock() + + unlockedKey, found := ks.unlocked[a.Address] + if !found { + return nil, ErrLocked + } + // Sign the hash using plain ECDSA operations + return crypto.Sign(hash, unlockedKey.PrivateKey) +} + +// SignTx signs the given transaction with the requested account. +func (ks *KeyStore) SignTx(a accounts.Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + // Look up the key to sign with and abort if it cannot be found + ks.mu.RLock() + defer ks.mu.RUnlock() + + unlockedKey, found := ks.unlocked[a.Address] + if !found { + return nil, ErrLocked + } + // Depending on the presence of the chain ID, sign with 2718 or homestead + signer := types.LatestSignerForChainID(chainID) + return types.SignTx(tx, signer, unlockedKey.PrivateKey) +} + +// SignHashWithPassphrase signs hash if the private key matching the given address +// can be decrypted with the given passphrase. The produced signature is in the +// [R || S || V] format where V is 0 or 1. +func (ks *KeyStore) SignHashWithPassphrase(a accounts.Account, passphrase string, hash []byte) (signature []byte, err error) { + _, key, err := ks.getDecryptedKey(a, passphrase) + if err != nil { + return nil, err + } + defer zeroKey(key.PrivateKey) + return crypto.Sign(hash, key.PrivateKey) +} + +// SignTxWithPassphrase signs the transaction if the private key matching the +// given address can be decrypted with the given passphrase. +func (ks *KeyStore) SignTxWithPassphrase(a accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + _, key, err := ks.getDecryptedKey(a, passphrase) + if err != nil { + return nil, err + } + defer zeroKey(key.PrivateKey) + // Depending on the presence of the chain ID, sign with or without replay protection. + signer := types.LatestSignerForChainID(chainID) + return types.SignTx(tx, signer, key.PrivateKey) +} + +// Unlock unlocks the given account indefinitely. +func (ks *KeyStore) Unlock(a accounts.Account, passphrase string) error { + return ks.TimedUnlock(a, passphrase, 0) +} + +// Lock removes the private key with the given address from memory. +func (ks *KeyStore) Lock(addr common.Address) error { + ks.mu.Lock() + if unl, found := ks.unlocked[addr]; found { + ks.mu.Unlock() + ks.expire(addr, unl, time.Duration(0)*time.Nanosecond) + } else { + ks.mu.Unlock() + } + return nil +} + +// TimedUnlock unlocks the given account with the passphrase. The account +// stays unlocked for the duration of timeout. A timeout of 0 unlocks the account +// until the program exits. The account must match a unique key file. +// +// If the account address is already unlocked for a duration, TimedUnlock extends or +// shortens the active unlock timeout. If the address was previously unlocked +// indefinitely the timeout is not altered. +func (ks *KeyStore) TimedUnlock(a accounts.Account, passphrase string, timeout time.Duration) error { + a, key, err := ks.getDecryptedKey(a, passphrase) + if err != nil { + return err + } + + ks.mu.Lock() + defer ks.mu.Unlock() + u, found := ks.unlocked[a.Address] + if found { + if u.abort == nil { + // The address was unlocked indefinitely, so unlocking + // it with a timeout would be confusing. + zeroKey(key.PrivateKey) + return nil + } + // Terminate the expire goroutine and replace it below. + close(u.abort) + } + if timeout > 0 { + u = &unlocked{Key: key, abort: make(chan struct{})} + go ks.expire(a.Address, u, timeout) + } else { + u = &unlocked{Key: key} + } + ks.unlocked[a.Address] = u + return nil +} + +// Find resolves the given account into a unique entry in the keystore. +func (ks *KeyStore) Find(a accounts.Account) (accounts.Account, error) { + ks.cache.maybeReload() + ks.cache.mu.Lock() + a, err := ks.cache.find(a) + ks.cache.mu.Unlock() + return a, err +} + +func (ks *KeyStore) getDecryptedKey(a accounts.Account, auth string) (accounts.Account, *Key, error) { + a, err := ks.Find(a) + if err != nil { + return a, nil, err + } + key, err := ks.storage.GetKey(a.Address, a.URL.Path, auth) + return a, key, err +} + +func (ks *KeyStore) expire(addr common.Address, u *unlocked, timeout time.Duration) { + t := time.NewTimer(timeout) + defer t.Stop() + select { + case <-u.abort: + // just quit + case <-t.C: + ks.mu.Lock() + // only drop if it's still the same key instance that dropLater + // was launched with. we can check that using pointer equality + // because the map stores a new pointer every time the key is + // unlocked. + if ks.unlocked[addr] == u { + zeroKey(u.PrivateKey) + delete(ks.unlocked, addr) + } + ks.mu.Unlock() + } +} + +// NewAccount generates a new key and stores it into the key directory, +// encrypting it with the passphrase. +func (ks *KeyStore) NewAccount(passphrase string) (accounts.Account, error) { + _, account, err := storeNewKey(ks.storage, crand.Reader, passphrase) + if err != nil { + return accounts.Account{}, err + } + // Add the account to the cache immediately rather + // than waiting for file system notifications to pick it up. + ks.cache.add(account) + ks.refreshWallets() + return account, nil +} + +// Export exports as a JSON key, encrypted with newPassphrase. +func (ks *KeyStore) Export(a accounts.Account, passphrase, newPassphrase string) (keyJSON []byte, err error) { + _, key, err := ks.getDecryptedKey(a, passphrase) + if err != nil { + return nil, err + } + var N, P int + if store, ok := ks.storage.(*keyStorePassphrase); ok { + N, P = store.scryptN, store.scryptP + } else { + N, P = StandardScryptN, StandardScryptP + } + return EncryptKey(key, newPassphrase, N, P) +} + +// Import stores the given encrypted JSON key into the key directory. +func (ks *KeyStore) Import(keyJSON []byte, passphrase, newPassphrase string) (accounts.Account, error) { + key, err := DecryptKey(keyJSON, passphrase) + if key != nil && key.PrivateKey != nil { + defer zeroKey(key.PrivateKey) + } + if err != nil { + return accounts.Account{}, err + } + ks.importMu.Lock() + defer ks.importMu.Unlock() + + if ks.cache.hasAddress(key.Address) { + return accounts.Account{ + Address: key.Address, + }, ErrAccountAlreadyExists + } + return ks.importKey(key, newPassphrase) +} + +// ImportECDSA stores the given key into the key directory, encrypting it with the passphrase. +func (ks *KeyStore) ImportECDSA(priv *ecdsa.PrivateKey, passphrase string) (accounts.Account, error) { + ks.importMu.Lock() + defer ks.importMu.Unlock() + + key := newKeyFromECDSA(priv) + if ks.cache.hasAddress(key.Address) { + return accounts.Account{ + Address: key.Address, + }, ErrAccountAlreadyExists + } + return ks.importKey(key, passphrase) +} + +func (ks *KeyStore) importKey(key *Key, passphrase string) (accounts.Account, error) { + a := accounts.Account{Address: key.Address, URL: accounts.URL{Scheme: KeyStoreScheme, Path: ks.storage.JoinPath(keyFileName(key.Address))}} + if err := ks.storage.StoreKey(a.URL.Path, key, passphrase); err != nil { + return accounts.Account{}, err + } + ks.cache.add(a) + ks.refreshWallets() + return a, nil +} + +// Update changes the passphrase of an existing account. +func (ks *KeyStore) Update(a accounts.Account, passphrase, newPassphrase string) error { + a, key, err := ks.getDecryptedKey(a, passphrase) + if err != nil { + return err + } + return ks.storage.StoreKey(a.URL.Path, key, newPassphrase) +} + +// ImportPreSaleKey decrypts the given Ethereum presale wallet and stores +// a key file in the key directory. The key file is encrypted with the same passphrase. +func (ks *KeyStore) ImportPreSaleKey(keyJSON []byte, passphrase string) (accounts.Account, error) { + a, _, err := importPreSaleKey(ks.storage, keyJSON, passphrase) + if err != nil { + return a, err + } + ks.cache.add(a) + ks.refreshWallets() + return a, nil +} + +// zeroKey zeroes a private key in memory. +func zeroKey(k *ecdsa.PrivateKey) { + b := k.D.Bits() + for i := range b { + b[i] = 0 + } +} diff --git a/accounts/keystore/keystore_test.go b/accounts/keystore/keystore_test.go new file mode 100644 index 0000000000..a65dabe82f --- /dev/null +++ b/accounts/keystore/keystore_test.go @@ -0,0 +1,482 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "io/ioutil" + "math/rand" + "os" + "runtime" + "sort" + "strings" + "sync" + "sync/atomic" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/event" +) + +var testSigData = make([]byte, 32) + +func TestKeyStore(t *testing.T) { + dir, ks := tmpKeyStore(t, true) + defer os.RemoveAll(dir) + + a, err := ks.NewAccount("foo") + if err != nil { + t.Fatal(err) + } + if !strings.HasPrefix(a.URL.Path, dir) { + t.Errorf("account file %s doesn't have dir prefix", a.URL) + } + stat, err := os.Stat(a.URL.Path) + if err != nil { + t.Fatalf("account file %s doesn't exist (%v)", a.URL, err) + } + if runtime.GOOS != "windows" && stat.Mode() != 0600 { + t.Fatalf("account file has wrong mode: got %o, want %o", stat.Mode(), 0600) + } + if !ks.HasAddress(a.Address) { + t.Errorf("HasAccount(%x) should've returned true", a.Address) + } + if err := ks.Update(a, "foo", "bar"); err != nil { + t.Errorf("Update error: %v", err) + } + if err := ks.Delete(a, "bar"); err != nil { + t.Errorf("Delete error: %v", err) + } + if common.FileExist(a.URL.Path) { + t.Errorf("account file %s should be gone after Delete", a.URL) + } + if ks.HasAddress(a.Address) { + t.Errorf("HasAccount(%x) should've returned true after Delete", a.Address) + } +} + +func TestSign(t *testing.T) { + dir, ks := tmpKeyStore(t, true) + defer os.RemoveAll(dir) + + pass := "" // not used but required by API + a1, err := ks.NewAccount(pass) + if err != nil { + t.Fatal(err) + } + if err := ks.Unlock(a1, ""); err != nil { + t.Fatal(err) + } + if _, err := ks.SignHash(accounts.Account{Address: a1.Address}, testSigData); err != nil { + t.Fatal(err) + } +} + +func TestSignWithPassphrase(t *testing.T) { + dir, ks := tmpKeyStore(t, true) + defer os.RemoveAll(dir) + + pass := "passwd" + acc, err := ks.NewAccount(pass) + if err != nil { + t.Fatal(err) + } + + if _, unlocked := ks.unlocked[acc.Address]; unlocked { + t.Fatal("expected account to be locked") + } + + _, err = ks.SignHashWithPassphrase(acc, pass, testSigData) + if err != nil { + t.Fatal(err) + } + + if _, unlocked := ks.unlocked[acc.Address]; unlocked { + t.Fatal("expected account to be locked") + } + + if _, err = ks.SignHashWithPassphrase(acc, "invalid passwd", testSigData); err == nil { + t.Fatal("expected SignHashWithPassphrase to fail with invalid password") + } +} + +func TestTimedUnlock(t *testing.T) { + dir, ks := tmpKeyStore(t, true) + defer os.RemoveAll(dir) + + pass := "foo" + a1, err := ks.NewAccount(pass) + if err != nil { + t.Fatal(err) + } + + // Signing without passphrase fails because account is locked + _, err = ks.SignHash(accounts.Account{Address: a1.Address}, testSigData) + if err != ErrLocked { + t.Fatal("Signing should've failed with ErrLocked before unlocking, got ", err) + } + + // Signing with passphrase works + if err = ks.TimedUnlock(a1, pass, 100*time.Millisecond); err != nil { + t.Fatal(err) + } + + // Signing without passphrase works because account is temp unlocked + _, err = ks.SignHash(accounts.Account{Address: a1.Address}, testSigData) + if err != nil { + t.Fatal("Signing shouldn't return an error after unlocking, got ", err) + } + + // Signing fails again after automatic locking + time.Sleep(250 * time.Millisecond) + _, err = ks.SignHash(accounts.Account{Address: a1.Address}, testSigData) + if err != ErrLocked { + t.Fatal("Signing should've failed with ErrLocked timeout expired, got ", err) + } +} + +func TestOverrideUnlock(t *testing.T) { + dir, ks := tmpKeyStore(t, false) + defer os.RemoveAll(dir) + + pass := "foo" + a1, err := ks.NewAccount(pass) + if err != nil { + t.Fatal(err) + } + + // Unlock indefinitely. + if err = ks.TimedUnlock(a1, pass, 5*time.Minute); err != nil { + t.Fatal(err) + } + + // Signing without passphrase works because account is temp unlocked + _, err = ks.SignHash(accounts.Account{Address: a1.Address}, testSigData) + if err != nil { + t.Fatal("Signing shouldn't return an error after unlocking, got ", err) + } + + // reset unlock to a shorter period, invalidates the previous unlock + if err = ks.TimedUnlock(a1, pass, 100*time.Millisecond); err != nil { + t.Fatal(err) + } + + // Signing without passphrase still works because account is temp unlocked + _, err = ks.SignHash(accounts.Account{Address: a1.Address}, testSigData) + if err != nil { + t.Fatal("Signing shouldn't return an error after unlocking, got ", err) + } + + // Signing fails again after automatic locking + time.Sleep(250 * time.Millisecond) + _, err = ks.SignHash(accounts.Account{Address: a1.Address}, testSigData) + if err != ErrLocked { + t.Fatal("Signing should've failed with ErrLocked timeout expired, got ", err) + } +} + +// This test should fail under -race if signing races the expiration goroutine. +func TestSignRace(t *testing.T) { + dir, ks := tmpKeyStore(t, false) + defer os.RemoveAll(dir) + + // Create a test account. + a1, err := ks.NewAccount("") + if err != nil { + t.Fatal("could not create the test account", err) + } + + if err := ks.TimedUnlock(a1, "", 15*time.Millisecond); err != nil { + t.Fatal("could not unlock the test account", err) + } + end := time.Now().Add(500 * time.Millisecond) + for time.Now().Before(end) { + if _, err := ks.SignHash(accounts.Account{Address: a1.Address}, testSigData); err == ErrLocked { + return + } else if err != nil { + t.Errorf("Sign error: %v", err) + return + } + time.Sleep(1 * time.Millisecond) + } + t.Errorf("Account did not lock within the timeout") +} + +// Tests that the wallet notifier loop starts and stops correctly based on the +// addition and removal of wallet event subscriptions. +func TestWalletNotifierLifecycle(t *testing.T) { + // Create a temporary kesytore to test with + dir, ks := tmpKeyStore(t, false) + defer os.RemoveAll(dir) + + // Ensure that the notification updater is not running yet + time.Sleep(250 * time.Millisecond) + ks.mu.RLock() + updating := ks.updating + ks.mu.RUnlock() + + if updating { + t.Errorf("wallet notifier running without subscribers") + } + // Subscribe to the wallet feed and ensure the updater boots up + updates := make(chan accounts.WalletEvent) + + subs := make([]event.Subscription, 2) + for i := 0; i < len(subs); i++ { + // Create a new subscription + subs[i] = ks.Subscribe(updates) + + // Ensure the notifier comes online + time.Sleep(250 * time.Millisecond) + ks.mu.RLock() + updating = ks.updating + ks.mu.RUnlock() + + if !updating { + t.Errorf("sub %d: wallet notifier not running after subscription", i) + } + } + // Unsubscribe and ensure the updater terminates eventually + for i := 0; i < len(subs); i++ { + // Close an existing subscription + subs[i].Unsubscribe() + + // Ensure the notifier shuts down at and only at the last close + for k := 0; k < int(walletRefreshCycle/(250*time.Millisecond))+2; k++ { + ks.mu.RLock() + updating = ks.updating + ks.mu.RUnlock() + + if i < len(subs)-1 && !updating { + t.Fatalf("sub %d: event notifier stopped prematurely", i) + } + if i == len(subs)-1 && !updating { + return + } + time.Sleep(250 * time.Millisecond) + } + } + t.Errorf("wallet notifier didn't terminate after unsubscribe") +} + +type walletEvent struct { + accounts.WalletEvent + a accounts.Account +} + +// Tests that wallet notifications and correctly fired when accounts are added +// or deleted from the keystore. +func TestWalletNotifications(t *testing.T) { + dir, ks := tmpKeyStore(t, false) + defer os.RemoveAll(dir) + + // Subscribe to the wallet feed and collect events. + var ( + events []walletEvent + updates = make(chan accounts.WalletEvent) + sub = ks.Subscribe(updates) + ) + defer sub.Unsubscribe() + go func() { + for { + select { + case ev := <-updates: + events = append(events, walletEvent{ev, ev.Wallet.Accounts()[0]}) + case <-sub.Err(): + close(updates) + return + } + } + }() + + // Randomly add and remove accounts. + var ( + live = make(map[common.Address]accounts.Account) + wantEvents []walletEvent + ) + for i := 0; i < 1024; i++ { + if create := len(live) == 0 || rand.Int()%4 > 0; create { + // Add a new account and ensure wallet notifications arrives + account, err := ks.NewAccount("") + if err != nil { + t.Fatalf("failed to create test account: %v", err) + } + live[account.Address] = account + wantEvents = append(wantEvents, walletEvent{accounts.WalletEvent{Kind: accounts.WalletArrived}, account}) + } else { + // Delete a random account. + var account accounts.Account + for _, a := range live { + account = a + break + } + if err := ks.Delete(account, ""); err != nil { + t.Fatalf("failed to delete test account: %v", err) + } + delete(live, account.Address) + wantEvents = append(wantEvents, walletEvent{accounts.WalletEvent{Kind: accounts.WalletDropped}, account}) + } + } + + // Shut down the event collector and check events. + sub.Unsubscribe() + for ev := range updates { + events = append(events, walletEvent{ev, ev.Wallet.Accounts()[0]}) + } + checkAccounts(t, live, ks.Wallets()) + checkEvents(t, wantEvents, events) +} + +// TestImportExport tests the import functionality of a keystore. +func TestImportECDSA(t *testing.T) { + dir, ks := tmpKeyStore(t, true) + defer os.RemoveAll(dir) + key, err := crypto.GenerateKey() + if err != nil { + t.Fatalf("failed to generate key: %v", key) + } + if _, err = ks.ImportECDSA(key, "old"); err != nil { + t.Errorf("importing failed: %v", err) + } + if _, err = ks.ImportECDSA(key, "old"); err == nil { + t.Errorf("importing same key twice succeeded") + } + if _, err = ks.ImportECDSA(key, "new"); err == nil { + t.Errorf("importing same key twice succeeded") + } +} + +// TestImportECDSA tests the import and export functionality of a keystore. +func TestImportExport(t *testing.T) { + dir, ks := tmpKeyStore(t, true) + defer os.RemoveAll(dir) + acc, err := ks.NewAccount("old") + if err != nil { + t.Fatalf("failed to create account: %v", acc) + } + json, err := ks.Export(acc, "old", "new") + if err != nil { + t.Fatalf("failed to export account: %v", acc) + } + dir2, ks2 := tmpKeyStore(t, true) + defer os.RemoveAll(dir2) + if _, err = ks2.Import(json, "old", "old"); err == nil { + t.Errorf("importing with invalid password succeeded") + } + acc2, err := ks2.Import(json, "new", "new") + if err != nil { + t.Errorf("importing failed: %v", err) + } + if acc.Address != acc2.Address { + t.Error("imported account does not match exported account") + } + if _, err = ks2.Import(json, "new", "new"); err == nil { + t.Errorf("importing a key twice succeeded") + } +} + +// TestImportRace tests the keystore on races. +// This test should fail under -race if importing races. +func TestImportRace(t *testing.T) { + dir, ks := tmpKeyStore(t, true) + defer os.RemoveAll(dir) + acc, err := ks.NewAccount("old") + if err != nil { + t.Fatalf("failed to create account: %v", acc) + } + json, err := ks.Export(acc, "old", "new") + if err != nil { + t.Fatalf("failed to export account: %v", acc) + } + dir2, ks2 := tmpKeyStore(t, true) + defer os.RemoveAll(dir2) + var atom uint32 + var wg sync.WaitGroup + wg.Add(2) + for i := 0; i < 2; i++ { + go func() { + defer wg.Done() + if _, err := ks2.Import(json, "new", "new"); err != nil { + atomic.AddUint32(&atom, 1) + } + }() + } + wg.Wait() + if atom != 1 { + t.Errorf("Import is racy") + } +} + +// checkAccounts checks that all known live accounts are present in the wallet list. +func checkAccounts(t *testing.T, live map[common.Address]accounts.Account, wallets []accounts.Wallet) { + if len(live) != len(wallets) { + t.Errorf("wallet list doesn't match required accounts: have %d, want %d", len(wallets), len(live)) + return + } + liveList := make([]accounts.Account, 0, len(live)) + for _, account := range live { + liveList = append(liveList, account) + } + sort.Sort(accountsByURL(liveList)) + for j, wallet := range wallets { + if accs := wallet.Accounts(); len(accs) != 1 { + t.Errorf("wallet %d: contains invalid number of accounts: have %d, want 1", j, len(accs)) + } else if accs[0] != liveList[j] { + t.Errorf("wallet %d: account mismatch: have %v, want %v", j, accs[0], liveList[j]) + } + } +} + +// checkEvents checks that all events in 'want' are present in 'have'. Events may be present multiple times. +func checkEvents(t *testing.T, want []walletEvent, have []walletEvent) { + for _, wantEv := range want { + nmatch := 0 + for ; len(have) > 0; nmatch++ { + if have[0].Kind != wantEv.Kind || have[0].a != wantEv.a { + break + } + have = have[1:] + } + if nmatch == 0 { + t.Fatalf("can't find event with Kind=%v for %x", wantEv.Kind, wantEv.a.Address) + } + } +} + +func tmpKeyStore(t *testing.T, encrypted bool) (string, *KeyStore) { + d, err := ioutil.TempDir("", "eth-keystore-test") + if err != nil { + t.Fatal(err) + } + newKs := NewPlaintextKeyStore + if encrypted { + newKs = func(kd string) *KeyStore { return NewKeyStore(kd, veryLightScryptN, veryLightScryptP) } + } + return d, newKs(d) +} diff --git a/accounts/keystore/passphrase.go b/accounts/keystore/passphrase.go new file mode 100644 index 0000000000..a1870b4a2c --- /dev/null +++ b/accounts/keystore/passphrase.go @@ -0,0 +1,377 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +/* + +This key store behaves as KeyStorePlain with the difference that +the private key is encrypted and on disk uses another JSON encoding. + +The crypto is documented at https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition + +*/ + +package keystore + +import ( + "bytes" + "crypto/aes" + "crypto/rand" + "crypto/sha256" + "encoding/hex" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" + "github.com/google/uuid" + "golang.org/x/crypto/pbkdf2" + "golang.org/x/crypto/scrypt" +) + +const ( + keyHeaderKDF = "scrypt" + + // StandardScryptN is the N parameter of Scrypt encryption algorithm, using 256MB + // memory and taking approximately 1s CPU time on a modern processor. + StandardScryptN = 1 << 18 + + // StandardScryptP is the P parameter of Scrypt encryption algorithm, using 256MB + // memory and taking approximately 1s CPU time on a modern processor. + StandardScryptP = 1 + + // LightScryptN is the N parameter of Scrypt encryption algorithm, using 4MB + // memory and taking approximately 100ms CPU time on a modern processor. + LightScryptN = 1 << 12 + + // LightScryptP is the P parameter of Scrypt encryption algorithm, using 4MB + // memory and taking approximately 100ms CPU time on a modern processor. + LightScryptP = 6 + + scryptR = 8 + scryptDKLen = 32 +) + +type keyStorePassphrase struct { + keysDirPath string + scryptN int + scryptP int + // skipKeyFileVerification disables the security-feature which does + // reads and decrypts any newly created keyfiles. This should be 'false' in all + // cases except tests -- setting this to 'true' is not recommended. + skipKeyFileVerification bool +} + +func (ks keyStorePassphrase) GetKey(addr common.Address, filename, auth string) (*Key, error) { + // Load the key from the keystore and decrypt its contents + keyjson, err := ioutil.ReadFile(filename) + if err != nil { + return nil, err + } + key, err := DecryptKey(keyjson, auth) + if err != nil { + return nil, err + } + // Make sure we're really operating on the requested key (no swap attacks) + if key.Address != addr { + return nil, fmt.Errorf("key content mismatch: have account %x, want %x", key.Address, addr) + } + return key, nil +} + +// StoreKey generates a key, encrypts with 'auth' and stores in the given directory +func StoreKey(dir, auth string, scryptN, scryptP int) (accounts.Account, error) { + _, a, err := storeNewKey(&keyStorePassphrase{dir, scryptN, scryptP, false}, rand.Reader, auth) + return a, err +} + +func (ks keyStorePassphrase) StoreKey(filename string, key *Key, auth string) error { + keyjson, err := EncryptKey(key, auth, ks.scryptN, ks.scryptP) + if err != nil { + return err + } + // Write into temporary file + tmpName, err := writeTemporaryKeyFile(filename, keyjson) + if err != nil { + return err + } + if !ks.skipKeyFileVerification { + // Verify that we can decrypt the file with the given password. + _, err = ks.GetKey(key.Address, tmpName, auth) + if err != nil { + msg := "An error was encountered when saving and verifying the keystore file. \n" + + "This indicates that the keystore is corrupted. \n" + + "The corrupted file is stored at \n%v\n" + + "Please file a ticket at:\n\n" + + "https://github.com/ethereum/go-ethereum/issues." + + "The error was : %s" + //lint:ignore ST1005 This is a message for the user + return fmt.Errorf(msg, tmpName, err) + } + } + return os.Rename(tmpName, filename) +} + +func (ks keyStorePassphrase) JoinPath(filename string) string { + if filepath.IsAbs(filename) { + return filename + } + return filepath.Join(ks.keysDirPath, filename) +} + +// Encryptdata encrypts the data given as 'data' with the password 'auth'. +func EncryptDataV3(data, auth []byte, scryptN, scryptP int) (CryptoJSON, error) { + salt := make([]byte, 32) + if _, err := io.ReadFull(rand.Reader, salt); err != nil { + panic("reading from crypto/rand failed: " + err.Error()) + } + derivedKey, err := scrypt.Key(auth, salt, scryptN, scryptR, scryptP, scryptDKLen) + if err != nil { + return CryptoJSON{}, err + } + encryptKey := derivedKey[:16] + + iv := make([]byte, aes.BlockSize) // 16 + if _, err := io.ReadFull(rand.Reader, iv); err != nil { + panic("reading from crypto/rand failed: " + err.Error()) + } + cipherText, err := aesCTRXOR(encryptKey, data, iv) + if err != nil { + return CryptoJSON{}, err + } + mac := crypto.Keccak256(derivedKey[16:32], cipherText) + + scryptParamsJSON := make(map[string]interface{}, 5) + scryptParamsJSON["n"] = scryptN + scryptParamsJSON["r"] = scryptR + scryptParamsJSON["p"] = scryptP + scryptParamsJSON["dklen"] = scryptDKLen + scryptParamsJSON["salt"] = hex.EncodeToString(salt) + cipherParamsJSON := cipherparamsJSON{ + IV: hex.EncodeToString(iv), + } + + cryptoStruct := CryptoJSON{ + Cipher: "aes-128-ctr", + CipherText: hex.EncodeToString(cipherText), + CipherParams: cipherParamsJSON, + KDF: keyHeaderKDF, + KDFParams: scryptParamsJSON, + MAC: hex.EncodeToString(mac), + } + return cryptoStruct, nil +} + +// EncryptKey encrypts a key using the specified scrypt parameters into a json +// blob that can be decrypted later on. +func EncryptKey(key *Key, auth string, scryptN, scryptP int) ([]byte, error) { + keyBytes := math.PaddedBigBytes(key.PrivateKey.D, 32) + cryptoStruct, err := EncryptDataV3(keyBytes, []byte(auth), scryptN, scryptP) + if err != nil { + return nil, err + } + encryptedKeyJSONV3 := encryptedKeyJSONV3{ + hex.EncodeToString(key.Address[:]), + cryptoStruct, + key.Id.String(), + version, + } + return json.Marshal(encryptedKeyJSONV3) +} + +// DecryptKey decrypts a key from a json blob, returning the private key itself. +func DecryptKey(keyjson []byte, auth string) (*Key, error) { + // Parse the json into a simple map to fetch the key version + m := make(map[string]interface{}) + if err := json.Unmarshal(keyjson, &m); err != nil { + return nil, err + } + // Depending on the version try to parse one way or another + var ( + keyBytes, keyId []byte + err error + ) + if version, ok := m["version"].(string); ok && version == "1" { + k := new(encryptedKeyJSONV1) + if err := json.Unmarshal(keyjson, k); err != nil { + return nil, err + } + keyBytes, keyId, err = decryptKeyV1(k, auth) + } else { + k := new(encryptedKeyJSONV3) + if err := json.Unmarshal(keyjson, k); err != nil { + return nil, err + } + keyBytes, keyId, err = decryptKeyV3(k, auth) + } + // Handle any decryption errors and return the key + if err != nil { + return nil, err + } + key := crypto.ToECDSAUnsafe(keyBytes) + id, err := uuid.FromBytes(keyId) + if err != nil { + return nil, err + } + return &Key{ + Id: id, + Address: crypto.PubkeyToAddress(key.PublicKey), + PrivateKey: key, + }, nil +} + +func DecryptDataV3(cryptoJson CryptoJSON, auth string) ([]byte, error) { + if cryptoJson.Cipher != "aes-128-ctr" { + return nil, fmt.Errorf("cipher not supported: %v", cryptoJson.Cipher) + } + mac, err := hex.DecodeString(cryptoJson.MAC) + if err != nil { + return nil, err + } + + iv, err := hex.DecodeString(cryptoJson.CipherParams.IV) + if err != nil { + return nil, err + } + + cipherText, err := hex.DecodeString(cryptoJson.CipherText) + if err != nil { + return nil, err + } + + derivedKey, err := getKDFKey(cryptoJson, auth) + if err != nil { + return nil, err + } + + calculatedMAC := crypto.Keccak256(derivedKey[16:32], cipherText) + if !bytes.Equal(calculatedMAC, mac) { + return nil, ErrDecrypt + } + + plainText, err := aesCTRXOR(derivedKey[:16], cipherText, iv) + if err != nil { + return nil, err + } + return plainText, err +} + +func decryptKeyV3(keyProtected *encryptedKeyJSONV3, auth string) (keyBytes []byte, keyId []byte, err error) { + if keyProtected.Version != version { + return nil, nil, fmt.Errorf("version not supported: %v", keyProtected.Version) + } + keyUUID, err := uuid.Parse(keyProtected.Id) + if err != nil { + return nil, nil, err + } + keyId = keyUUID[:] + plainText, err := DecryptDataV3(keyProtected.Crypto, auth) + if err != nil { + return nil, nil, err + } + return plainText, keyId, err +} + +func decryptKeyV1(keyProtected *encryptedKeyJSONV1, auth string) (keyBytes []byte, keyId []byte, err error) { + keyUUID, err := uuid.Parse(keyProtected.Id) + if err != nil { + return nil, nil, err + } + keyId = keyUUID[:] + mac, err := hex.DecodeString(keyProtected.Crypto.MAC) + if err != nil { + return nil, nil, err + } + + iv, err := hex.DecodeString(keyProtected.Crypto.CipherParams.IV) + if err != nil { + return nil, nil, err + } + + cipherText, err := hex.DecodeString(keyProtected.Crypto.CipherText) + if err != nil { + return nil, nil, err + } + + derivedKey, err := getKDFKey(keyProtected.Crypto, auth) + if err != nil { + return nil, nil, err + } + + calculatedMAC := crypto.Keccak256(derivedKey[16:32], cipherText) + if !bytes.Equal(calculatedMAC, mac) { + return nil, nil, ErrDecrypt + } + + plainText, err := aesCBCDecrypt(crypto.Keccak256(derivedKey[:16])[:16], cipherText, iv) + if err != nil { + return nil, nil, err + } + return plainText, keyId, err +} + +func getKDFKey(cryptoJSON CryptoJSON, auth string) ([]byte, error) { + authArray := []byte(auth) + salt, err := hex.DecodeString(cryptoJSON.KDFParams["salt"].(string)) + if err != nil { + return nil, err + } + dkLen := ensureInt(cryptoJSON.KDFParams["dklen"]) + + if cryptoJSON.KDF == keyHeaderKDF { + n := ensureInt(cryptoJSON.KDFParams["n"]) + r := ensureInt(cryptoJSON.KDFParams["r"]) + p := ensureInt(cryptoJSON.KDFParams["p"]) + return scrypt.Key(authArray, salt, n, r, p, dkLen) + + } else if cryptoJSON.KDF == "pbkdf2" { + c := ensureInt(cryptoJSON.KDFParams["c"]) + prf := cryptoJSON.KDFParams["prf"].(string) + if prf != "hmac-sha256" { + return nil, fmt.Errorf("unsupported PBKDF2 PRF: %s", prf) + } + key := pbkdf2.Key(authArray, salt, c, dkLen, sha256.New) + return key, nil + } + + return nil, fmt.Errorf("unsupported KDF: %s", cryptoJSON.KDF) +} + +// TODO: can we do without this when unmarshalling dynamic JSON? +// why do integers in KDF params end up as float64 and not int after +// unmarshal? +func ensureInt(x interface{}) int { + res, ok := x.(int) + if !ok { + res = int(x.(float64)) + } + return res +} diff --git a/accounts/keystore/passphrase_test.go b/accounts/keystore/passphrase_test.go new file mode 100644 index 0000000000..a9b276e9e3 --- /dev/null +++ b/accounts/keystore/passphrase_test.go @@ -0,0 +1,70 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "io/ioutil" + "testing" + + "github.com/ethereum/go-ethereum/common" +) + +const ( + veryLightScryptN = 2 + veryLightScryptP = 1 +) + +// Tests that a json key file can be decrypted and encrypted in multiple rounds. +func TestKeyEncryptDecrypt(t *testing.T) { + keyjson, err := ioutil.ReadFile("testdata/very-light-scrypt.json") + if err != nil { + t.Fatal(err) + } + password := "" + address := common.HexToAddress("45dea0fb0bba44f4fcf290bba71fd57d7117cbb8") + + // Do a few rounds of decryption and encryption + for i := 0; i < 3; i++ { + // Try a bad password first + if _, err := DecryptKey(keyjson, password+"bad"); err == nil { + t.Errorf("test %d: json key decrypted with bad password", i) + } + // Decrypt with the correct password + key, err := DecryptKey(keyjson, password) + if err != nil { + t.Fatalf("test %d: json key failed to decrypt: %v", i, err) + } + if key.Address != address { + t.Errorf("test %d: key address mismatch: have %x, want %x", i, key.Address, address) + } + // Recrypt with a new password and start over + password += "new data appended" + if keyjson, err = EncryptKey(key, password, veryLightScryptN, veryLightScryptP); err != nil { + t.Errorf("test %d: failed to recrypt key %v", i, err) + } + } +} diff --git a/accounts/keystore/plain.go b/accounts/keystore/plain.go new file mode 100644 index 0000000000..181eeb2ec0 --- /dev/null +++ b/accounts/keystore/plain.go @@ -0,0 +1,71 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "encoding/json" + "fmt" + "os" + "path/filepath" + + "github.com/ethereum/go-ethereum/common" +) + +type keyStorePlain struct { + keysDirPath string +} + +func (ks keyStorePlain) GetKey(addr common.Address, filename, auth string) (*Key, error) { + fd, err := os.Open(filename) + if err != nil { + return nil, err + } + defer fd.Close() + key := new(Key) + if err := json.NewDecoder(fd).Decode(key); err != nil { + return nil, err + } + if key.Address != addr { + return nil, fmt.Errorf("key content mismatch: have address %x, want %x", key.Address, addr) + } + return key, nil +} + +func (ks keyStorePlain) StoreKey(filename string, key *Key, auth string) error { + content, err := json.Marshal(key) + if err != nil { + return err + } + return writeKeyFile(filename, content) +} + +func (ks keyStorePlain) JoinPath(filename string) string { + if filepath.IsAbs(filename) { + return filename + } + return filepath.Join(ks.keysDirPath, filename) +} diff --git a/accounts/keystore/plain_test.go b/accounts/keystore/plain_test.go new file mode 100644 index 0000000000..22f7ea4a58 --- /dev/null +++ b/accounts/keystore/plain_test.go @@ -0,0 +1,233 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "crypto/rand" + "encoding/hex" + "fmt" + "io/ioutil" + "os" + "path/filepath" + "reflect" + "strings" + "testing" + + "github.com/ethereum/go-ethereum/common" +) + +func tmpKeyStoreIface(t *testing.T, encrypted bool) (dir string, ks keyStore) { + d, err := ioutil.TempDir("", "geth-keystore-test") + if err != nil { + t.Fatal(err) + } + if encrypted { + ks = &keyStorePassphrase{d, veryLightScryptN, veryLightScryptP, true} + } else { + ks = &keyStorePlain{d} + } + return d, ks +} + +func TestKeyStorePlain(t *testing.T) { + dir, ks := tmpKeyStoreIface(t, false) + defer os.RemoveAll(dir) + + pass := "" // not used but required by API + k1, account, err := storeNewKey(ks, rand.Reader, pass) + if err != nil { + t.Fatal(err) + } + k2, err := ks.GetKey(k1.Address, account.URL.Path, pass) + if err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(k1.Address, k2.Address) { + t.Fatal(err) + } + if !reflect.DeepEqual(k1.PrivateKey, k2.PrivateKey) { + t.Fatal(err) + } +} + +func TestKeyStorePassphrase(t *testing.T) { + dir, ks := tmpKeyStoreIface(t, true) + defer os.RemoveAll(dir) + + pass := "foo" + k1, account, err := storeNewKey(ks, rand.Reader, pass) + if err != nil { + t.Fatal(err) + } + k2, err := ks.GetKey(k1.Address, account.URL.Path, pass) + if err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(k1.Address, k2.Address) { + t.Fatal(err) + } + if !reflect.DeepEqual(k1.PrivateKey, k2.PrivateKey) { + t.Fatal(err) + } +} + +func TestKeyStorePassphraseDecryptionFail(t *testing.T) { + dir, ks := tmpKeyStoreIface(t, true) + defer os.RemoveAll(dir) + + pass := "foo" + k1, account, err := storeNewKey(ks, rand.Reader, pass) + if err != nil { + t.Fatal(err) + } + if _, err = ks.GetKey(k1.Address, account.URL.Path, "bar"); err != ErrDecrypt { + t.Fatalf("wrong error for invalid password\ngot %q\nwant %q", err, ErrDecrypt) + } +} + +func TestImportPreSaleKey(t *testing.T) { + dir, ks := tmpKeyStoreIface(t, true) + defer os.RemoveAll(dir) + + // file content of a presale key file generated with: + // python pyethsaletool.py genwallet + // with password "foo" + fileContent := "{\"encseed\": \"26d87f5f2bf9835f9a47eefae571bc09f9107bb13d54ff12a4ec095d01f83897494cf34f7bed2ed34126ecba9db7b62de56c9d7cd136520a0427bfb11b8954ba7ac39b90d4650d3448e31185affcd74226a68f1e94b1108e6e0a4a91cdd83eba\", \"ethaddr\": \"d4584b5f6229b7be90727b0fc8c6b91bb427821f\", \"email\": \"gustav.simonsson@gmail.com\", \"btcaddr\": \"1EVknXyFC68kKNLkh6YnKzW41svSRoaAcx\"}" + pass := "foo" + account, _, err := importPreSaleKey(ks, []byte(fileContent), pass) + if err != nil { + t.Fatal(err) + } + if account.Address != common.HexToAddress("d4584b5f6229b7be90727b0fc8c6b91bb427821f") { + t.Errorf("imported account has wrong address %x", account.Address) + } + if !strings.HasPrefix(account.URL.Path, dir) { + t.Errorf("imported account file not in keystore directory: %q", account.URL) + } +} + +// Test and utils for the key store tests in the Ethereum JSON tests; +// testdataKeyStoreTests/basic_tests.json +type KeyStoreTestV3 struct { + Json encryptedKeyJSONV3 + Password string + Priv string +} + +type KeyStoreTestV1 struct { + Json encryptedKeyJSONV1 + Password string + Priv string +} + +func TestV3_PBKDF2_1(t *testing.T) { + t.Parallel() + tests := loadKeyStoreTestV3("testdata/v3_test_vector.json", t) + testDecryptV3(tests["wikipage_test_vector_pbkdf2"], t) +} + +var testsSubmodule = filepath.Join("..", "..", "tests", "testdata", "KeyStoreTests") + +func skipIfSubmoduleMissing(t *testing.T) { + if !common.FileExist(testsSubmodule) { + t.Skipf("can't find JSON tests from submodule at %s", testsSubmodule) + } +} + +func TestV3_PBKDF2_2(t *testing.T) { + skipIfSubmoduleMissing(t) + t.Parallel() + tests := loadKeyStoreTestV3(filepath.Join(testsSubmodule, "basic_tests.json"), t) + testDecryptV3(tests["test1"], t) +} + +func TestV3_PBKDF2_3(t *testing.T) { + skipIfSubmoduleMissing(t) + t.Parallel() + tests := loadKeyStoreTestV3(filepath.Join(testsSubmodule, "basic_tests.json"), t) + testDecryptV3(tests["python_generated_test_with_odd_iv"], t) +} + +func TestV3_PBKDF2_4(t *testing.T) { + skipIfSubmoduleMissing(t) + t.Parallel() + tests := loadKeyStoreTestV3(filepath.Join(testsSubmodule, "basic_tests.json"), t) + testDecryptV3(tests["evilnonce"], t) +} + +func TestV3_Scrypt_1(t *testing.T) { + t.Parallel() + tests := loadKeyStoreTestV3("testdata/v3_test_vector.json", t) + testDecryptV3(tests["wikipage_test_vector_scrypt"], t) +} + +func TestV3_Scrypt_2(t *testing.T) { + skipIfSubmoduleMissing(t) + t.Parallel() + tests := loadKeyStoreTestV3(filepath.Join(testsSubmodule, "basic_tests.json"), t) + testDecryptV3(tests["test2"], t) +} + +func testDecryptV3(test KeyStoreTestV3, t *testing.T) { + privBytes, _, err := decryptKeyV3(&test.Json, test.Password) + if err != nil { + t.Fatal(err) + } + privHex := hex.EncodeToString(privBytes) + if test.Priv != privHex { + t.Fatal(fmt.Errorf("Decrypted bytes not equal to test, expected %v have %v", test.Priv, privHex)) + } +} + +func loadKeyStoreTestV3(file string, t *testing.T) map[string]KeyStoreTestV3 { + tests := make(map[string]KeyStoreTestV3) + err := common.LoadJSON(file, &tests) + if err != nil { + t.Fatal(err) + } + return tests +} + +func TestKeyForDirectICAP(t *testing.T) { + t.Parallel() + key := NewKeyForDirectICAP(rand.Reader) + if !strings.HasPrefix(key.Address.Hex(), "0x00") { + t.Errorf("Expected first address byte to be zero, have: %s", key.Address.Hex()) + } +} + +func TestV3_31_Byte_Key(t *testing.T) { + t.Parallel() + tests := loadKeyStoreTestV3("testdata/v3_test_vector.json", t) + testDecryptV3(tests["31_byte_key"], t) +} + +func TestV3_30_Byte_Key(t *testing.T) { + t.Parallel() + tests := loadKeyStoreTestV3("testdata/v3_test_vector.json", t) + testDecryptV3(tests["30_byte_key"], t) +} diff --git a/accounts/keystore/presale.go b/accounts/keystore/presale.go new file mode 100644 index 0000000000..b32936b3f1 --- /dev/null +++ b/accounts/keystore/presale.go @@ -0,0 +1,160 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "crypto/aes" + "crypto/cipher" + "crypto/sha256" + "encoding/hex" + "encoding/json" + "errors" + "fmt" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ethereum/go-ethereum/crypto" + "github.com/google/uuid" + "golang.org/x/crypto/pbkdf2" +) + +// creates a Key and stores that in the given KeyStore by decrypting a presale key JSON +func importPreSaleKey(keyStore keyStore, keyJSON []byte, password string) (accounts.Account, *Key, error) { + key, err := decryptPreSaleKey(keyJSON, password) + if err != nil { + return accounts.Account{}, nil, err + } + key.Id, err = uuid.NewRandom() + if err != nil { + return accounts.Account{}, nil, err + } + a := accounts.Account{ + Address: key.Address, + URL: accounts.URL{ + Scheme: KeyStoreScheme, + Path: keyStore.JoinPath(keyFileName(key.Address)), + }, + } + err = keyStore.StoreKey(a.URL.Path, key, password) + return a, key, err +} + +func decryptPreSaleKey(fileContent []byte, password string) (key *Key, err error) { + preSaleKeyStruct := struct { + EncSeed string + EthAddr string + Email string + BtcAddr string + }{} + err = json.Unmarshal(fileContent, &preSaleKeyStruct) + if err != nil { + return nil, err + } + encSeedBytes, err := hex.DecodeString(preSaleKeyStruct.EncSeed) + if err != nil { + return nil, errors.New("invalid hex in encSeed") + } + if len(encSeedBytes) < 16 { + return nil, errors.New("invalid encSeed, too short") + } + iv := encSeedBytes[:16] + cipherText := encSeedBytes[16:] + /* + See https://github.com/ethereum/pyethsaletool + + pyethsaletool generates the encryption key from password by + 2000 rounds of PBKDF2 with HMAC-SHA-256 using password as salt (:(). + 16 byte key length within PBKDF2 and resulting key is used as AES key + */ + passBytes := []byte(password) + derivedKey := pbkdf2.Key(passBytes, passBytes, 2000, 16, sha256.New) + plainText, err := aesCBCDecrypt(derivedKey, cipherText, iv) + if err != nil { + return nil, err + } + ethPriv := crypto.Keccak256(plainText) + ecKey := crypto.ToECDSAUnsafe(ethPriv) + + key = &Key{ + Id: uuid.UUID{}, + Address: crypto.PubkeyToAddress(ecKey.PublicKey), + PrivateKey: ecKey, + } + derivedAddr := hex.EncodeToString(key.Address.Bytes()) // needed because .Hex() gives leading "0x" + expectedAddr := preSaleKeyStruct.EthAddr + if derivedAddr != expectedAddr { + err = fmt.Errorf("decrypted addr '%s' not equal to expected addr '%s'", derivedAddr, expectedAddr) + } + return key, err +} + +func aesCTRXOR(key, inText, iv []byte) ([]byte, error) { + // AES-128 is selected due to size of encryptKey. + aesBlock, err := aes.NewCipher(key) + if err != nil { + return nil, err + } + stream := cipher.NewCTR(aesBlock, iv) + outText := make([]byte, len(inText)) + stream.XORKeyStream(outText, inText) + return outText, err +} + +func aesCBCDecrypt(key, cipherText, iv []byte) ([]byte, error) { + aesBlock, err := aes.NewCipher(key) + if err != nil { + return nil, err + } + decrypter := cipher.NewCBCDecrypter(aesBlock, iv) + paddedPlaintext := make([]byte, len(cipherText)) + decrypter.CryptBlocks(paddedPlaintext, cipherText) + plaintext := pkcs7Unpad(paddedPlaintext) + if plaintext == nil { + return nil, ErrDecrypt + } + return plaintext, err +} + +// From https://leanpub.com/gocrypto/read#leanpub-auto-block-cipher-modes +func pkcs7Unpad(in []byte) []byte { + if len(in) == 0 { + return nil + } + + padding := in[len(in)-1] + if int(padding) > len(in) || padding > aes.BlockSize { + return nil + } else if padding == 0 { + return nil + } + + for i := len(in) - 1; i > len(in)-int(padding)-1; i-- { + if in[i] != padding { + return nil + } + } + return in[:len(in)-int(padding)] +} diff --git a/accounts/keystore/testdata/dupes/1 b/accounts/keystore/testdata/dupes/1 new file mode 100644 index 0000000000..a3868ec6d5 --- /dev/null +++ b/accounts/keystore/testdata/dupes/1 @@ -0,0 +1 @@ +{"address":"f466859ead1932d743d622cb74fc058882e8648a","crypto":{"cipher":"aes-128-ctr","ciphertext":"cb664472deacb41a2e995fa7f96fe29ce744471deb8d146a0e43c7898c9ddd4d","cipherparams":{"iv":"dfd9ee70812add5f4b8f89d0811c9158"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"0d6769bf016d45c479213990d6a08d938469c4adad8a02ce507b4a4e7b7739f1"},"mac":"bac9af994b15a45dd39669fc66f9aa8a3b9dd8c22cb16e4d8d7ea089d0f1a1a9"},"id":"472e8b3d-afb6-45b5-8111-72c89895099a","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/dupes/2 b/accounts/keystore/testdata/dupes/2 new file mode 100644 index 0000000000..a3868ec6d5 --- /dev/null +++ b/accounts/keystore/testdata/dupes/2 @@ -0,0 +1 @@ +{"address":"f466859ead1932d743d622cb74fc058882e8648a","crypto":{"cipher":"aes-128-ctr","ciphertext":"cb664472deacb41a2e995fa7f96fe29ce744471deb8d146a0e43c7898c9ddd4d","cipherparams":{"iv":"dfd9ee70812add5f4b8f89d0811c9158"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"0d6769bf016d45c479213990d6a08d938469c4adad8a02ce507b4a4e7b7739f1"},"mac":"bac9af994b15a45dd39669fc66f9aa8a3b9dd8c22cb16e4d8d7ea089d0f1a1a9"},"id":"472e8b3d-afb6-45b5-8111-72c89895099a","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/dupes/foo b/accounts/keystore/testdata/dupes/foo new file mode 100644 index 0000000000..c57060aea0 --- /dev/null +++ b/accounts/keystore/testdata/dupes/foo @@ -0,0 +1 @@ +{"address":"7ef5a6135f1fd6a02593eedc869c6d41d934aef8","crypto":{"cipher":"aes-128-ctr","ciphertext":"1d0839166e7a15b9c1333fc865d69858b22df26815ccf601b28219b6192974e1","cipherparams":{"iv":"8df6caa7ff1b00c4e871f002cb7921ed"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"e5e6ef3f4ea695f496b643ebd3f75c0aa58ef4070e90c80c5d3fb0241bf1595c"},"mac":"6d16dfde774845e4585357f24bce530528bc69f4f84e1e22880d34fa45c273e5"},"id":"950077c7-71e3-4c44-a4a1-143919141ed4","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/keystore/.hiddenfile b/accounts/keystore/testdata/keystore/.hiddenfile new file mode 100644 index 0000000000..d91faccdeb --- /dev/null +++ b/accounts/keystore/testdata/keystore/.hiddenfile @@ -0,0 +1 @@ +{"address":"f466859ead1932d743d622cb74fc058882e8648a","crypto":{"cipher":"aes-128-ctr","ciphertext":"cb664472deacb41a2e995fa7f96fe29ce744471deb8d146a0e43c7898c9ddd4d","cipherparams":{"iv":"dfd9ee70812add5f4b8f89d0811c9158"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"0d6769bf016d45c479213990d6a08d938469c4adad8a02ce507b4a4e7b7739f1"},"mac":"bac9af994b15a45dd39669fc66f9aa8a3b9dd8c22cb16e4d8d7ea089d0f1a1a9"},"id":"472e8b3d-afb6-45b5-8111-72c89895099a","version":3} diff --git a/accounts/keystore/testdata/keystore/README b/accounts/keystore/testdata/keystore/README new file mode 100644 index 0000000000..6af9ac3f1b --- /dev/null +++ b/accounts/keystore/testdata/keystore/README @@ -0,0 +1,21 @@ +This directory contains accounts for testing. +The password that unlocks them is "foobar". + +The "good" key files which are supposed to be loadable are: + +- File: UTC--2016-03-22T12-57-55.920751759Z--7ef5a6135f1fd6a02593eedc869c6d41d934aef8 + Address: 0x7ef5a6135f1fd6a02593eedc869c6d41d934aef8 +- File: aaa + Address: 0xf466859ead1932d743d622cb74fc058882e8648a +- File: zzz + Address: 0x289d485d9771714cce91d3393d764e1311907acc + +The other files (including this README) are broken in various ways +and should not be picked up by package accounts: + +- File: no-address (missing address field, otherwise same as "aaa") +- File: garbage (file with random data) +- File: empty (file with no content) +- File: swapfile~ (should be skipped) +- File: .hiddenfile (should be skipped) +- File: foo/... (should be skipped because it is a directory) diff --git a/accounts/keystore/testdata/keystore/UTC--2016-03-22T12-57-55.920751759Z--7ef5a6135f1fd6a02593eedc869c6d41d934aef8 b/accounts/keystore/testdata/keystore/UTC--2016-03-22T12-57-55.920751759Z--7ef5a6135f1fd6a02593eedc869c6d41d934aef8 new file mode 100644 index 0000000000..c57060aea0 --- /dev/null +++ b/accounts/keystore/testdata/keystore/UTC--2016-03-22T12-57-55.920751759Z--7ef5a6135f1fd6a02593eedc869c6d41d934aef8 @@ -0,0 +1 @@ +{"address":"7ef5a6135f1fd6a02593eedc869c6d41d934aef8","crypto":{"cipher":"aes-128-ctr","ciphertext":"1d0839166e7a15b9c1333fc865d69858b22df26815ccf601b28219b6192974e1","cipherparams":{"iv":"8df6caa7ff1b00c4e871f002cb7921ed"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"e5e6ef3f4ea695f496b643ebd3f75c0aa58ef4070e90c80c5d3fb0241bf1595c"},"mac":"6d16dfde774845e4585357f24bce530528bc69f4f84e1e22880d34fa45c273e5"},"id":"950077c7-71e3-4c44-a4a1-143919141ed4","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/keystore/aaa b/accounts/keystore/testdata/keystore/aaa new file mode 100644 index 0000000000..a3868ec6d5 --- /dev/null +++ b/accounts/keystore/testdata/keystore/aaa @@ -0,0 +1 @@ +{"address":"f466859ead1932d743d622cb74fc058882e8648a","crypto":{"cipher":"aes-128-ctr","ciphertext":"cb664472deacb41a2e995fa7f96fe29ce744471deb8d146a0e43c7898c9ddd4d","cipherparams":{"iv":"dfd9ee70812add5f4b8f89d0811c9158"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"0d6769bf016d45c479213990d6a08d938469c4adad8a02ce507b4a4e7b7739f1"},"mac":"bac9af994b15a45dd39669fc66f9aa8a3b9dd8c22cb16e4d8d7ea089d0f1a1a9"},"id":"472e8b3d-afb6-45b5-8111-72c89895099a","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/keystore/empty b/accounts/keystore/testdata/keystore/empty new file mode 100644 index 0000000000..e69de29bb2 diff --git a/accounts/keystore/testdata/keystore/foo/fd9bd350f08ee3c0c19b85a8e16114a11a60aa4e b/accounts/keystore/testdata/keystore/foo/fd9bd350f08ee3c0c19b85a8e16114a11a60aa4e new file mode 100644 index 0000000000..309841e524 --- /dev/null +++ b/accounts/keystore/testdata/keystore/foo/fd9bd350f08ee3c0c19b85a8e16114a11a60aa4e @@ -0,0 +1 @@ +{"address":"fd9bd350f08ee3c0c19b85a8e16114a11a60aa4e","crypto":{"cipher":"aes-128-ctr","ciphertext":"8124d5134aa4a927c79fd852989e4b5419397566f04b0936a1eb1d168c7c68a5","cipherparams":{"iv":"e2febe17176414dd2cda28287947eb2f"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":4096,"p":6,"r":8,"salt":"44b415ede89f3bdd6830390a21b78965f571b347a589d1d943029f016c5e8bd5"},"mac":"5e149ff25bfd9dd45746a84bb2bcd2f015f2cbca2b6d25c5de8c29617f71fe5b"},"id":"d6ac5452-2b2c-4d3c-ad80-4bf0327d971c","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/keystore/garbage b/accounts/keystore/testdata/keystore/garbage new file mode 100644 index 0000000000..ff45091e71 Binary files /dev/null and b/accounts/keystore/testdata/keystore/garbage differ diff --git a/accounts/keystore/testdata/keystore/no-address b/accounts/keystore/testdata/keystore/no-address new file mode 100644 index 0000000000..ad51269ead --- /dev/null +++ b/accounts/keystore/testdata/keystore/no-address @@ -0,0 +1 @@ +{"crypto":{"cipher":"aes-128-ctr","ciphertext":"cb664472deacb41a2e995fa7f96fe29ce744471deb8d146a0e43c7898c9ddd4d","cipherparams":{"iv":"dfd9ee70812add5f4b8f89d0811c9158"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"0d6769bf016d45c479213990d6a08d938469c4adad8a02ce507b4a4e7b7739f1"},"mac":"bac9af994b15a45dd39669fc66f9aa8a3b9dd8c22cb16e4d8d7ea089d0f1a1a9"},"id":"472e8b3d-afb6-45b5-8111-72c89895099a","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/keystore/zero b/accounts/keystore/testdata/keystore/zero new file mode 100644 index 0000000000..b52617f8ae --- /dev/null +++ b/accounts/keystore/testdata/keystore/zero @@ -0,0 +1 @@ +{"address":"0000000000000000000000000000000000000000","crypto":{"cipher":"aes-128-ctr","ciphertext":"cb664472deacb41a2e995fa7f96fe29ce744471deb8d146a0e43c7898c9ddd4d","cipherparams":{"iv":"dfd9ee70812add5f4b8f89d0811c9158"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"0d6769bf016d45c479213990d6a08d938469c4adad8a02ce507b4a4e7b7739f1"},"mac":"bac9af994b15a45dd39669fc66f9aa8a3b9dd8c22cb16e4d8d7ea089d0f1a1a9"},"id":"472e8b3d-afb6-45b5-8111-72c89895099a","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/keystore/zzz b/accounts/keystore/testdata/keystore/zzz new file mode 100644 index 0000000000..cfd8a47017 --- /dev/null +++ b/accounts/keystore/testdata/keystore/zzz @@ -0,0 +1 @@ +{"address":"289d485d9771714cce91d3393d764e1311907acc","crypto":{"cipher":"aes-128-ctr","ciphertext":"faf32ca89d286b107f5e6d842802e05263c49b78d46eac74e6109e9a963378ab","cipherparams":{"iv":"558833eec4a665a8c55608d7d503407d"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":8,"p":16,"r":8,"salt":"d571fff447ffb24314f9513f5160246f09997b857ac71348b73e785aab40dc04"},"mac":"21edb85ff7d0dab1767b9bf498f2c3cb7be7609490756bd32300bb213b59effe"},"id":"3279afcf-55ba-43ff-8997-02dcc46a6525","version":3} \ No newline at end of file diff --git a/accounts/keystore/testdata/v1/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e b/accounts/keystore/testdata/v1/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e new file mode 100644 index 0000000000..498d8131e8 --- /dev/null +++ b/accounts/keystore/testdata/v1/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e @@ -0,0 +1 @@ +{"address":"cb61d5a9c4896fb9658090b597ef0e7be6f7b67e","Crypto":{"cipher":"aes-128-cbc","ciphertext":"6143d3192db8b66eabd693d9c4e414dcfaee52abda451af79ccf474dafb35f1bfc7ea013aa9d2ee35969a1a2e8d752d0","cipherparams":{"iv":"35337770fc2117994ecdcad026bccff4"},"kdf":"scrypt","kdfparams":{"n":262144,"r":8,"p":1,"dklen":32,"salt":"9afcddebca541253a2f4053391c673ff9fe23097cd8555d149d929e4ccf1257f"},"mac":"3f3d5af884b17a100b0b3232c0636c230a54dc2ac8d986227219b0dd89197644","version":"1"},"id":"e25f7c1f-d318-4f29-b62c-687190d4d299","version":"1"} \ No newline at end of file diff --git a/accounts/keystore/testdata/v1_test_vector.json b/accounts/keystore/testdata/v1_test_vector.json new file mode 100644 index 0000000000..3d09b55b5e --- /dev/null +++ b/accounts/keystore/testdata/v1_test_vector.json @@ -0,0 +1,28 @@ +{ + "test1": { + "json": { + "Crypto": { + "cipher": "aes-128-cbc", + "cipherparams": { + "iv": "35337770fc2117994ecdcad026bccff4" + }, + "ciphertext": "6143d3192db8b66eabd693d9c4e414dcfaee52abda451af79ccf474dafb35f1bfc7ea013aa9d2ee35969a1a2e8d752d0", + "kdf": "scrypt", + "kdfparams": { + "dklen": 32, + "n": 262144, + "p": 1, + "r": 8, + "salt": "9afcddebca541253a2f4053391c673ff9fe23097cd8555d149d929e4ccf1257f" + }, + "mac": "3f3d5af884b17a100b0b3232c0636c230a54dc2ac8d986227219b0dd89197644", + "version": "1" + }, + "address": "cb61d5a9c4896fb9658090b597ef0e7be6f7b67e", + "id": "e25f7c1f-d318-4f29-b62c-687190d4d299", + "version": "1" + }, + "password": "g", + "priv": "d1b1178d3529626a1a93e073f65028370d14c7eb0936eb42abef05db6f37ad7d" + } +} diff --git a/accounts/keystore/testdata/v3_test_vector.json b/accounts/keystore/testdata/v3_test_vector.json new file mode 100644 index 0000000000..1e7f790c05 --- /dev/null +++ b/accounts/keystore/testdata/v3_test_vector.json @@ -0,0 +1,97 @@ +{ + "wikipage_test_vector_scrypt": { + "json": { + "crypto" : { + "cipher" : "aes-128-ctr", + "cipherparams" : { + "iv" : "83dbcc02d8ccb40e466191a123791e0e" + }, + "ciphertext" : "d172bf743a674da9cdad04534d56926ef8358534d458fffccd4e6ad2fbde479c", + "kdf" : "scrypt", + "kdfparams" : { + "dklen" : 32, + "n" : 262144, + "r" : 1, + "p" : 8, + "salt" : "ab0c7876052600dd703518d6fc3fe8984592145b591fc8fb5c6d43190334ba19" + }, + "mac" : "2103ac29920d71da29f15d75b4a16dbe95cfd7ff8faea1056c33131d846e3097" + }, + "id" : "3198bc9c-6672-5ab3-d995-4942343ae5b6", + "version" : 3 + }, + "password": "testpassword", + "priv": "7a28b5ba57c53603b0b07b56bba752f7784bf506fa95edc395f5cf6c7514fe9d" + }, + "wikipage_test_vector_pbkdf2": { + "json": { + "crypto" : { + "cipher" : "aes-128-ctr", + "cipherparams" : { + "iv" : "6087dab2f9fdbbfaddc31a909735c1e6" + }, + "ciphertext" : "5318b4d5bcd28de64ee5559e671353e16f075ecae9f99c7a79a38af5f869aa46", + "kdf" : "pbkdf2", + "kdfparams" : { + "c" : 262144, + "dklen" : 32, + "prf" : "hmac-sha256", + "salt" : "ae3cd4e7013836a3df6bd7241b12db061dbe2c6785853cce422d148a624ce0bd" + }, + "mac" : "517ead924a9d0dc3124507e3393d175ce3ff7c1e96529c6c555ce9e51205e9b2" + }, + "id" : "3198bc9c-6672-5ab3-d995-4942343ae5b6", + "version" : 3 + }, + "password": "testpassword", + "priv": "7a28b5ba57c53603b0b07b56bba752f7784bf506fa95edc395f5cf6c7514fe9d" + }, + "31_byte_key": { + "json": { + "crypto" : { + "cipher" : "aes-128-ctr", + "cipherparams" : { + "iv" : "e0c41130a323adc1446fc82f724bca2f" + }, + "ciphertext" : "9517cd5bdbe69076f9bf5057248c6c050141e970efa36ce53692d5d59a3984", + "kdf" : "scrypt", + "kdfparams" : { + "dklen" : 32, + "n" : 2, + "r" : 8, + "p" : 1, + "salt" : "711f816911c92d649fb4c84b047915679933555030b3552c1212609b38208c63" + }, + "mac" : "d5e116151c6aa71470e67a7d42c9620c75c4d23229847dcc127794f0732b0db5" + }, + "id" : "fecfc4ce-e956-48fd-953b-30f8b52ed66c", + "version" : 3 + }, + "password": "foo", + "priv": "fa7b3db73dc7dfdf8c5fbdb796d741e4488628c41fc4febd9160a866ba0f35" + }, + "30_byte_key": { + "json": { + "crypto" : { + "cipher" : "aes-128-ctr", + "cipherparams" : { + "iv" : "3ca92af36ad7c2cd92454c59cea5ef00" + }, + "ciphertext" : "108b7d34f3442fc26ab1ab90ca91476ba6bfa8c00975a49ef9051dc675aa", + "kdf" : "scrypt", + "kdfparams" : { + "dklen" : 32, + "n" : 2, + "r" : 8, + "p" : 1, + "salt" : "d0769e608fb86cda848065642a9c6fa046845c928175662b8e356c77f914cd3b" + }, + "mac" : "75d0e6759f7b3cefa319c3be41680ab6beea7d8328653474bd06706d4cc67420" + }, + "id" : "a37e1559-5955-450d-8075-7b8931b392b2", + "version" : 3 + }, + "password": "foo", + "priv": "81c29e8142bb6a81bef5a92bda7a8328a5c85bb2f9542e76f9b0f94fc018" + } +} diff --git a/accounts/keystore/testdata/very-light-scrypt.json b/accounts/keystore/testdata/very-light-scrypt.json new file mode 100644 index 0000000000..d23b9b2b91 --- /dev/null +++ b/accounts/keystore/testdata/very-light-scrypt.json @@ -0,0 +1 @@ +{"address":"45dea0fb0bba44f4fcf290bba71fd57d7117cbb8","crypto":{"cipher":"aes-128-ctr","ciphertext":"b87781948a1befd247bff51ef4063f716cf6c2d3481163e9a8f42e1f9bb74145","cipherparams":{"iv":"dc4926b48a105133d2f16b96833abf1e"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":2,"p":1,"r":8,"salt":"004244bbdc51cadda545b1cfa43cff9ed2ae88e08c61f1479dbb45410722f8f0"},"mac":"39990c1684557447940d4c69e06b1b82b2aceacb43f284df65c956daf3046b85"},"id":"ce541d8d-c79b-40f8-9f8c-20f59616faba","version":3} diff --git a/accounts/keystore/wallet.go b/accounts/keystore/wallet.go new file mode 100644 index 0000000000..65f54f0ea6 --- /dev/null +++ b/accounts/keystore/wallet.go @@ -0,0 +1,160 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package keystore + +import ( + "math/big" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ethereum/go-ethereum/crypto" +) + +// keystoreWallet implements the accounts.Wallet interface for the original +// keystore. +type keystoreWallet struct { + account accounts.Account // Single account contained in this wallet + keystore *KeyStore // Keystore where the account originates from +} + +// URL implements accounts.Wallet, returning the URL of the account within. +func (w *keystoreWallet) URL() accounts.URL { + return w.account.URL +} + +// Status implements accounts.Wallet, returning whether the account held by the +// keystore wallet is unlocked or not. +func (w *keystoreWallet) Status() (string, error) { + w.keystore.mu.RLock() + defer w.keystore.mu.RUnlock() + + if _, ok := w.keystore.unlocked[w.account.Address]; ok { + return "Unlocked", nil + } + return "Locked", nil +} + +// Open implements accounts.Wallet, but is a noop for plain wallets since there +// is no connection or decryption step necessary to access the list of accounts. +func (w *keystoreWallet) Open(passphrase string) error { return nil } + +// Close implements accounts.Wallet, but is a noop for plain wallets since there +// is no meaningful open operation. +func (w *keystoreWallet) Close() error { return nil } + +// Accounts implements accounts.Wallet, returning an account list consisting of +// a single account that the plain keystore wallet contains. +func (w *keystoreWallet) Accounts() []accounts.Account { + return []accounts.Account{w.account} +} + +// Contains implements accounts.Wallet, returning whether a particular account is +// or is not wrapped by this wallet instance. +func (w *keystoreWallet) Contains(account accounts.Account) bool { + return account.Address == w.account.Address && (account.URL == (accounts.URL{}) || account.URL == w.account.URL) +} + +// Derive implements accounts.Wallet, but is a noop for plain wallets since there +// is no notion of hierarchical account derivation for plain keystore accounts. +func (w *keystoreWallet) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error) { + return accounts.Account{}, accounts.ErrNotSupported +} + +// SelfDerive implements accounts.Wallet, but is a noop for plain wallets since +// there is no notion of hierarchical account derivation for plain keystore accounts. +func (w *keystoreWallet) SelfDerive(bases []accounts.DerivationPath, chain interfaces.ChainStateReader) { +} + +// signHash attempts to sign the given hash with +// the given account. If the wallet does not wrap this particular account, an +// error is returned to avoid account leakage (even though in theory we may be +// able to sign via our shared keystore backend). +func (w *keystoreWallet) signHash(account accounts.Account, hash []byte) ([]byte, error) { + // Make sure the requested account is contained within + if !w.Contains(account) { + return nil, accounts.ErrUnknownAccount + } + // Account seems valid, request the keystore to sign + return w.keystore.SignHash(account, hash) +} + +// SignData signs keccak256(data). The mimetype parameter describes the type of data being signed. +func (w *keystoreWallet) SignData(account accounts.Account, mimeType string, data []byte) ([]byte, error) { + return w.signHash(account, crypto.Keccak256(data)) +} + +// SignDataWithPassphrase signs keccak256(data). The mimetype parameter describes the type of data being signed. +func (w *keystoreWallet) SignDataWithPassphrase(account accounts.Account, passphrase, mimeType string, data []byte) ([]byte, error) { + // Make sure the requested account is contained within + if !w.Contains(account) { + return nil, accounts.ErrUnknownAccount + } + // Account seems valid, request the keystore to sign + return w.keystore.SignHashWithPassphrase(account, passphrase, crypto.Keccak256(data)) +} + +// SignText implements accounts.Wallet, attempting to sign the hash of +// the given text with the given account. +func (w *keystoreWallet) SignText(account accounts.Account, text []byte) ([]byte, error) { + return w.signHash(account, accounts.TextHash(text)) +} + +// SignTextWithPassphrase implements accounts.Wallet, attempting to sign the +// hash of the given text with the given account using passphrase as extra authentication. +func (w *keystoreWallet) SignTextWithPassphrase(account accounts.Account, passphrase string, text []byte) ([]byte, error) { + // Make sure the requested account is contained within + if !w.Contains(account) { + return nil, accounts.ErrUnknownAccount + } + // Account seems valid, request the keystore to sign + return w.keystore.SignHashWithPassphrase(account, passphrase, accounts.TextHash(text)) +} + +// SignTx implements accounts.Wallet, attempting to sign the given transaction +// with the given account. If the wallet does not wrap this particular account, +// an error is returned to avoid account leakage (even though in theory we may +// be able to sign via our shared keystore backend). +func (w *keystoreWallet) SignTx(account accounts.Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + // Make sure the requested account is contained within + if !w.Contains(account) { + return nil, accounts.ErrUnknownAccount + } + // Account seems valid, request the keystore to sign + return w.keystore.SignTx(account, tx, chainID) +} + +// SignTxWithPassphrase implements accounts.Wallet, attempting to sign the given +// transaction with the given account using passphrase as extra authentication. +func (w *keystoreWallet) SignTxWithPassphrase(account accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + // Make sure the requested account is contained within + if !w.Contains(account) { + return nil, accounts.ErrUnknownAccount + } + // Account seems valid, request the keystore to sign + return w.keystore.SignTxWithPassphrase(account, passphrase, tx, chainID) +} diff --git a/accounts/keystore/watch.go b/accounts/keystore/watch.go new file mode 100644 index 0000000000..1fec0f98ba --- /dev/null +++ b/accounts/keystore/watch.go @@ -0,0 +1,119 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:build (darwin && !ios && cgo) || freebsd || (linux && !arm64) || netbsd || solaris +// +build darwin,!ios,cgo freebsd linux,!arm64 netbsd solaris + +package keystore + +import ( + "time" + + "github.com/ethereum/go-ethereum/log" + "github.com/rjeczalik/notify" +) + +type watcher struct { + ac *accountCache + starting bool + running bool + ev chan notify.EventInfo + quit chan struct{} +} + +func newWatcher(ac *accountCache) *watcher { + return &watcher{ + ac: ac, + ev: make(chan notify.EventInfo, 10), + quit: make(chan struct{}), + } +} + +// starts the watcher loop in the background. +// Start a watcher in the background if that's not already in progress. +// The caller must hold w.ac.mu. +func (w *watcher) start() { + if w.starting || w.running { + return + } + w.starting = true + go w.loop() +} + +func (w *watcher) close() { + close(w.quit) +} + +func (w *watcher) loop() { + defer func() { + w.ac.mu.Lock() + w.running = false + w.starting = false + w.ac.mu.Unlock() + }() + logger := log.New("path", w.ac.keydir) + + if err := notify.Watch(w.ac.keydir, w.ev, notify.All); err != nil { + logger.Trace("Failed to watch keystore folder", "err", err) + return + } + defer notify.Stop(w.ev) + logger.Trace("Started watching keystore folder") + defer logger.Trace("Stopped watching keystore folder") + + w.ac.mu.Lock() + w.running = true + w.ac.mu.Unlock() + + // Wait for file system events and reload. + // When an event occurs, the reload call is delayed a bit so that + // multiple events arriving quickly only cause a single reload. + var ( + debounceDuration = 500 * time.Millisecond + rescanTriggered = false + debounce = time.NewTimer(0) + ) + // Ignore initial trigger + if !debounce.Stop() { + <-debounce.C + } + defer debounce.Stop() + for { + select { + case <-w.quit: + return + case <-w.ev: + // Trigger the scan (with delay), if not already triggered + if !rescanTriggered { + debounce.Reset(debounceDuration) + rescanTriggered = true + } + case <-debounce.C: + w.ac.scanAccounts() + rescanTriggered = false + } + } +} diff --git a/accounts/keystore/watch_fallback.go b/accounts/keystore/watch_fallback.go new file mode 100644 index 0000000000..1435a23c30 --- /dev/null +++ b/accounts/keystore/watch_fallback.go @@ -0,0 +1,39 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:build (darwin && !cgo) || ios || (linux && arm64) || windows || (!darwin && !freebsd && !linux && !netbsd && !solaris) +// +build darwin,!cgo ios linux,arm64 windows !darwin,!freebsd,!linux,!netbsd,!solaris + +// This is the fallback implementation of directory watching. +// It is used on unsupported platforms. + +package keystore + +type watcher struct{ running bool } + +func newWatcher(*accountCache) *watcher { return new(watcher) } +func (*watcher) start() {} +func (*watcher) close() {} diff --git a/accounts/manager.go b/accounts/manager.go new file mode 100644 index 0000000000..933405b409 --- /dev/null +++ b/accounts/manager.go @@ -0,0 +1,282 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +import ( + "reflect" + "sort" + "sync" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" +) + +// managerSubBufferSize determines how many incoming wallet events +// the manager will buffer in its channel. +const managerSubBufferSize = 50 + +// Config contains the settings of the global account manager. +// +// TODO(rjl493456442, karalabe, holiman): Get rid of this when account management +// is removed in favor of Clef. +type Config struct { + InsecureUnlockAllowed bool // Whether account unlocking in insecure environment is allowed +} + +// newBackendEvent lets the manager know it should +// track the given backend for wallet updates. +type newBackendEvent struct { + backend Backend + processed chan struct{} // Informs event emitter that backend has been integrated +} + +// Manager is an overarching account manager that can communicate with various +// backends for signing transactions. +type Manager struct { + config *Config // Global account manager configurations + backends map[reflect.Type][]Backend // Index of backends currently registered + updaters []event.Subscription // Wallet update subscriptions for all backends + updates chan WalletEvent // Subscription sink for backend wallet changes + newBackends chan newBackendEvent // Incoming backends to be tracked by the manager + wallets []Wallet // Cache of all wallets from all registered backends + + feed event.Feed // Wallet feed notifying of arrivals/departures + + quit chan chan error + term chan struct{} // Channel is closed upon termination of the update loop + lock sync.RWMutex +} + +// NewManager creates a generic account manager to sign transaction via various +// supported backends. +func NewManager(config *Config, backends ...Backend) *Manager { + // Retrieve the initial list of wallets from the backends and sort by URL + var wallets []Wallet + for _, backend := range backends { + wallets = merge(wallets, backend.Wallets()...) + } + // Subscribe to wallet notifications from all backends + updates := make(chan WalletEvent, managerSubBufferSize) + + subs := make([]event.Subscription, len(backends)) + for i, backend := range backends { + subs[i] = backend.Subscribe(updates) + } + // Assemble the account manager and return + am := &Manager{ + config: config, + backends: make(map[reflect.Type][]Backend), + updaters: subs, + updates: updates, + newBackends: make(chan newBackendEvent), + wallets: wallets, + quit: make(chan chan error), + term: make(chan struct{}), + } + for _, backend := range backends { + kind := reflect.TypeOf(backend) + am.backends[kind] = append(am.backends[kind], backend) + } + go am.update() + + return am +} + +// Close terminates the account manager's internal notification processes. +func (am *Manager) Close() error { + errc := make(chan error) + am.quit <- errc + return <-errc +} + +// Config returns the configuration of account manager. +func (am *Manager) Config() *Config { + return am.config +} + +// AddBackend starts the tracking of an additional backend for wallet updates. +// cmd/geth assumes once this func returns the backends have been already integrated. +func (am *Manager) AddBackend(backend Backend) { + done := make(chan struct{}) + am.newBackends <- newBackendEvent{backend, done} + <-done +} + +// update is the wallet event loop listening for notifications from the backends +// and updating the cache of wallets. +func (am *Manager) update() { + // Close all subscriptions when the manager terminates + defer func() { + am.lock.Lock() + for _, sub := range am.updaters { + sub.Unsubscribe() + } + am.updaters = nil + am.lock.Unlock() + }() + + // Loop until termination + for { + select { + case event := <-am.updates: + // Wallet event arrived, update local cache + am.lock.Lock() + switch event.Kind { + case WalletArrived: + am.wallets = merge(am.wallets, event.Wallet) + case WalletDropped: + am.wallets = drop(am.wallets, event.Wallet) + } + am.lock.Unlock() + + // Notify any listeners of the event + am.feed.Send(event) + case event := <-am.newBackends: + am.lock.Lock() + // Update caches + backend := event.backend + am.wallets = merge(am.wallets, backend.Wallets()...) + am.updaters = append(am.updaters, backend.Subscribe(am.updates)) + kind := reflect.TypeOf(backend) + am.backends[kind] = append(am.backends[kind], backend) + am.lock.Unlock() + close(event.processed) + case errc := <-am.quit: + // Manager terminating, return + errc <- nil + // Signals event emitters the loop is not receiving values + // to prevent them from getting stuck. + close(am.term) + return + } + } +} + +// Backends retrieves the backend(s) with the given type from the account manager. +func (am *Manager) Backends(kind reflect.Type) []Backend { + am.lock.RLock() + defer am.lock.RUnlock() + + return am.backends[kind] +} + +// Wallets returns all signer accounts registered under this account manager. +func (am *Manager) Wallets() []Wallet { + am.lock.RLock() + defer am.lock.RUnlock() + + return am.walletsNoLock() +} + +// walletsNoLock returns all registered wallets. Callers must hold am.lock. +func (am *Manager) walletsNoLock() []Wallet { + cpy := make([]Wallet, len(am.wallets)) + copy(cpy, am.wallets) + return cpy +} + +// Wallet retrieves the wallet associated with a particular URL. +func (am *Manager) Wallet(url string) (Wallet, error) { + am.lock.RLock() + defer am.lock.RUnlock() + + parsed, err := parseURL(url) + if err != nil { + return nil, err + } + for _, wallet := range am.walletsNoLock() { + if wallet.URL() == parsed { + return wallet, nil + } + } + return nil, ErrUnknownWallet +} + +// Accounts returns all account addresses of all wallets within the account manager +func (am *Manager) Accounts() []common.Address { + am.lock.RLock() + defer am.lock.RUnlock() + + addresses := make([]common.Address, 0) // return [] instead of nil if empty + for _, wallet := range am.wallets { + for _, account := range wallet.Accounts() { + addresses = append(addresses, account.Address) + } + } + return addresses +} + +// Find attempts to locate the wallet corresponding to a specific account. Since +// accounts can be dynamically added to and removed from wallets, this method has +// a linear runtime in the number of wallets. +func (am *Manager) Find(account Account) (Wallet, error) { + am.lock.RLock() + defer am.lock.RUnlock() + + for _, wallet := range am.wallets { + if wallet.Contains(account) { + return wallet, nil + } + } + return nil, ErrUnknownAccount +} + +// Subscribe creates an async subscription to receive notifications when the +// manager detects the arrival or departure of a wallet from any of its backends. +func (am *Manager) Subscribe(sink chan<- WalletEvent) event.Subscription { + return am.feed.Subscribe(sink) +} + +// merge is a sorted analogue of append for wallets, where the ordering of the +// origin list is preserved by inserting new wallets at the correct position. +// +// The original slice is assumed to be already sorted by URL. +func merge(slice []Wallet, wallets ...Wallet) []Wallet { + for _, wallet := range wallets { + n := sort.Search(len(slice), func(i int) bool { return slice[i].URL().Cmp(wallet.URL()) >= 0 }) + if n == len(slice) { + slice = append(slice, wallet) + continue + } + slice = append(slice[:n], append([]Wallet{wallet}, slice[n:]...)...) + } + return slice +} + +// drop is the couterpart of merge, which looks up wallets from within the sorted +// cache and removes the ones specified. +func drop(slice []Wallet, wallets ...Wallet) []Wallet { + for _, wallet := range wallets { + n := sort.Search(len(slice), func(i int) bool { return slice[i].URL().Cmp(wallet.URL()) >= 0 }) + if n == len(slice) { + // Wallet not found, may happen during startup + continue + } + slice = append(slice[:n], slice[n+1:]...) + } + return slice +} diff --git a/accounts/scwallet/README.md b/accounts/scwallet/README.md new file mode 100644 index 0000000000..4313d9c6b2 --- /dev/null +++ b/accounts/scwallet/README.md @@ -0,0 +1,106 @@ +# Using the smartcard wallet + +## Requirements + + * A USB smartcard reader + * A keycard that supports the status app + * PCSCD version 4.3 running on your system **Only version 4.3 is currently supported** + +## Preparing the smartcard + + **WARNING: FOILLOWING THESE INSTRUCTIONS WILL DESTROY THE MASTER KEY ON YOUR CARD. ONLY PROCEED IF NO FUNDS ARE ASSOCIATED WITH THESE ACCOUNTS** + + You can use status' [keycard-cli](https://github.com/status-im/keycard-cli) and you should get _at least_ version 2.1.1 of their [smartcard application](https://github.com/status-im/status-keycard/releases/download/2.2.1/keycard_v2.2.1.cap) + + You also need to make sure that the PCSC daemon is running on your system. + + Then, you can install the application to the card by typing: + + ``` + keycard install -a keycard_v2.2.1.cap && keycard init + ``` + + At the end of this process, you will be provided with a PIN, a PUK and a pairing password. Write them down, you'll need them shortly. + + Start `geth` with the `console` command. You will notice the following warning: + + ``` + WARN [04-09|16:58:38.898] Failed to open wallet url=keycard://044def09 err="smartcard: pairing password needed" + ``` + + Write down the URL (`keycard://044def09` in this example). Then ask `geth` to open the wallet: + + ``` + > personal.openWallet("keycard://044def09", "pairing password") + ``` + + The pairing password has been generated during the card initialization process. + + The process needs to be repeated once more with the PIN: + + ``` + > personal.openWallet("keycard://044def09", "PIN number") + ``` + + If everything goes well, you should see your new account when typing `personal` on the console: + + ``` + > personal + WARN [04-09|17:02:07.330] Smartcard wallet account derivation failed url=keycard://044def09 err="Unexpected response status Cla=0x80, Ins=0xd1, Sw=0x6985" + { + listAccounts: [], + listWallets: [{ + status: "Empty, waiting for initialization", + url: "keycard://044def09" + }], + ... + } + ``` + + So the communication with the card is working, but there is no key associated with this wallet. Let's create it: + + ``` + > personal.initializeWallet("keycard://044def09") + "tilt ... impact" + ``` + + You should get a list of words, this is your seed so write them down. Your wallet should now be initialized: + + ``` + > personal.listWallets + [{ + accounts: [{ + address: "0x678b7cd55c61917defb23546a41803c5bfefbc7a", + url: "keycard://044d/m/44'/60'/0'/0/0" + }], + status: "Online", + url: "keycard://044def09" + }] + ``` + + You're all set! + +## Usage + + 1. Start `geth` with the `console` command + 2. Check the card's URL by checking `personal.listWallets`: + +``` + listWallets: [{ + status: "Online, can derive public keys", + url: "keycard://a4d73015" + }] +``` + + 3. Open the wallet, you will be prompted for your pairing password, then PIN: + +``` +personal.openWallet("keycard://a4d73015") +``` + + 4. Check that creation was successful by typing e.g. `personal`. Then use it like a regular wallet. + +## Known issues + + * Starting geth with a valid card seems to make firefox crash. + * PCSC version 4.4 should work, but is currently untested diff --git a/accounts/scwallet/apdu.go b/accounts/scwallet/apdu.go new file mode 100644 index 0000000000..3120ef6859 --- /dev/null +++ b/accounts/scwallet/apdu.go @@ -0,0 +1,97 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package scwallet + +import ( + "bytes" + "encoding/binary" + "fmt" +) + +// commandAPDU represents an application data unit sent to a smartcard. +type commandAPDU struct { + Cla, Ins, P1, P2 uint8 // Class, Instruction, Parameter 1, Parameter 2 + Data []byte // Command data + Le uint8 // Command data length +} + +// serialize serializes a command APDU. +func (ca commandAPDU) serialize() ([]byte, error) { + buf := new(bytes.Buffer) + + if err := binary.Write(buf, binary.BigEndian, ca.Cla); err != nil { + return nil, err + } + if err := binary.Write(buf, binary.BigEndian, ca.Ins); err != nil { + return nil, err + } + if err := binary.Write(buf, binary.BigEndian, ca.P1); err != nil { + return nil, err + } + if err := binary.Write(buf, binary.BigEndian, ca.P2); err != nil { + return nil, err + } + if len(ca.Data) > 0 { + if err := binary.Write(buf, binary.BigEndian, uint8(len(ca.Data))); err != nil { + return nil, err + } + if err := binary.Write(buf, binary.BigEndian, ca.Data); err != nil { + return nil, err + } + } + if err := binary.Write(buf, binary.BigEndian, ca.Le); err != nil { + return nil, err + } + return buf.Bytes(), nil +} + +// responseAPDU represents an application data unit received from a smart card. +type responseAPDU struct { + Data []byte // response data + Sw1, Sw2 uint8 // status words 1 and 2 +} + +// deserialize deserializes a response APDU. +func (ra *responseAPDU) deserialize(data []byte) error { + if len(data) < 2 { + return fmt.Errorf("can not deserialize data: payload too short (%d < 2)", len(data)) + } + + ra.Data = make([]byte, len(data)-2) + + buf := bytes.NewReader(data) + if err := binary.Read(buf, binary.BigEndian, &ra.Data); err != nil { + return err + } + if err := binary.Read(buf, binary.BigEndian, &ra.Sw1); err != nil { + return err + } + if err := binary.Read(buf, binary.BigEndian, &ra.Sw2); err != nil { + return err + } + return nil +} diff --git a/accounts/scwallet/hub.go b/accounts/scwallet/hub.go new file mode 100644 index 0000000000..674fb4556e --- /dev/null +++ b/accounts/scwallet/hub.go @@ -0,0 +1,312 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// This package implements support for smartcard-based hardware wallets such as +// the one written by Status: https://github.com/status-im/hardware-wallet +// +// This implementation of smartcard wallets have a different interaction process +// to other types of hardware wallet. The process works like this: +// +// 1. (First use with a given client) Establish a pairing between hardware +// wallet and client. This requires a secret value called a 'pairing password'. +// You can pair with an unpaired wallet with `personal.openWallet(URI, pairing password)`. +// 2. (First use only) Initialize the wallet, which generates a keypair, stores +// it on the wallet, and returns it so the user can back it up. You can +// initialize a wallet with `personal.initializeWallet(URI)`. +// 3. Connect to the wallet using the pairing information established in step 1. +// You can connect to a paired wallet with `personal.openWallet(URI, PIN)`. +// 4. Interact with the wallet as normal. + +package scwallet + +import ( + "encoding/json" + "io/ioutil" + "os" + "path/filepath" + "sort" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" + pcsc "github.com/gballet/go-libpcsclite" +) + +// Scheme is the URI prefix for smartcard wallets. +const Scheme = "keycard" + +// refreshCycle is the maximum time between wallet refreshes (if USB hotplug +// notifications don't work). +const refreshCycle = time.Second + +// refreshThrottling is the minimum time between wallet refreshes to avoid thrashing. +const refreshThrottling = 500 * time.Millisecond + +// smartcardPairing contains information about a smart card we have paired with +// or might pair with the hub. +type smartcardPairing struct { + PublicKey []byte `json:"publicKey"` + PairingIndex uint8 `json:"pairingIndex"` + PairingKey []byte `json:"pairingKey"` + Accounts map[common.Address]accounts.DerivationPath `json:"accounts"` +} + +// Hub is a accounts.Backend that can find and handle generic PC/SC hardware wallets. +type Hub struct { + scheme string // Protocol scheme prefixing account and wallet URLs. + + context *pcsc.Client + datadir string + pairings map[string]smartcardPairing + + refreshed time.Time // Time instance when the list of wallets was last refreshed + wallets map[string]*Wallet // Mapping from reader names to wallet instances + updateFeed event.Feed // Event feed to notify wallet additions/removals + updateScope event.SubscriptionScope // Subscription scope tracking current live listeners + updating bool // Whether the event notification loop is running + + quit chan chan error + + stateLock sync.RWMutex // Protects the internals of the hub from racey access +} + +func (hub *Hub) readPairings() error { + hub.pairings = make(map[string]smartcardPairing) + pairingFile, err := os.Open(filepath.Join(hub.datadir, "smartcards.json")) + if err != nil { + if os.IsNotExist(err) { + return nil + } + return err + } + + pairingData, err := ioutil.ReadAll(pairingFile) + if err != nil { + return err + } + var pairings []smartcardPairing + if err := json.Unmarshal(pairingData, &pairings); err != nil { + return err + } + + for _, pairing := range pairings { + hub.pairings[string(pairing.PublicKey)] = pairing + } + return nil +} + +func (hub *Hub) writePairings() error { + pairingFile, err := os.OpenFile(filepath.Join(hub.datadir, "smartcards.json"), os.O_RDWR|os.O_CREATE, 0755) + if err != nil { + return err + } + defer pairingFile.Close() + + pairings := make([]smartcardPairing, 0, len(hub.pairings)) + for _, pairing := range hub.pairings { + pairings = append(pairings, pairing) + } + + pairingData, err := json.Marshal(pairings) + if err != nil { + return err + } + + if _, err := pairingFile.Write(pairingData); err != nil { + return err + } + + return nil +} + +func (hub *Hub) pairing(wallet *Wallet) *smartcardPairing { + if pairing, ok := hub.pairings[string(wallet.PublicKey)]; ok { + return &pairing + } + return nil +} + +func (hub *Hub) setPairing(wallet *Wallet, pairing *smartcardPairing) error { + if pairing == nil { + delete(hub.pairings, string(wallet.PublicKey)) + } else { + hub.pairings[string(wallet.PublicKey)] = *pairing + } + return hub.writePairings() +} + +// NewHub creates a new hardware wallet manager for smartcards. +func NewHub(daemonPath string, scheme string, datadir string) (*Hub, error) { + context, err := pcsc.EstablishContext(daemonPath, pcsc.ScopeSystem) + if err != nil { + return nil, err + } + hub := &Hub{ + scheme: scheme, + context: context, + datadir: datadir, + wallets: make(map[string]*Wallet), + quit: make(chan chan error), + } + if err := hub.readPairings(); err != nil { + return nil, err + } + hub.refreshWallets() + return hub, nil +} + +// Wallets implements accounts.Backend, returning all the currently tracked smart +// cards that appear to be hardware wallets. +func (hub *Hub) Wallets() []accounts.Wallet { + // Make sure the list of wallets is up to date + hub.refreshWallets() + + hub.stateLock.RLock() + defer hub.stateLock.RUnlock() + + cpy := make([]accounts.Wallet, 0, len(hub.wallets)) + for _, wallet := range hub.wallets { + cpy = append(cpy, wallet) + } + sort.Sort(accounts.WalletsByURL(cpy)) + return cpy +} + +// refreshWallets scans the devices attached to the machine and updates the +// list of wallets based on the found devices. +func (hub *Hub) refreshWallets() { + // Don't scan the USB like crazy it the user fetches wallets in a loop + hub.stateLock.RLock() + elapsed := time.Since(hub.refreshed) + hub.stateLock.RUnlock() + + if elapsed < refreshThrottling { + return + } + // Retrieve all the smart card reader to check for cards + readers, err := hub.context.ListReaders() + if err != nil { + // This is a perverted hack, the scard library returns an error if no card + // readers are present instead of simply returning an empty list. We don't + // want to fill the user's log with errors, so filter those out. + if err.Error() != "scard: Cannot find a smart card reader." { + log.Error("Failed to enumerate smart card readers", "err", err) + return + } + } + // Transform the current list of wallets into the new one + hub.stateLock.Lock() + + events := []accounts.WalletEvent{} + seen := make(map[string]struct{}) + + for _, reader := range readers { + // Mark the reader as present + seen[reader] = struct{}{} + + // If we already know about this card, skip to the next reader, otherwise clean up + if wallet, ok := hub.wallets[reader]; ok { + if err := wallet.ping(); err == nil { + continue + } + wallet.Close() + events = append(events, accounts.WalletEvent{Wallet: wallet, Kind: accounts.WalletDropped}) + delete(hub.wallets, reader) + } + // New card detected, try to connect to it + card, err := hub.context.Connect(reader, pcsc.ShareShared, pcsc.ProtocolAny) + if err != nil { + log.Debug("Failed to open smart card", "reader", reader, "err", err) + continue + } + wallet := NewWallet(hub, card) + if err = wallet.connect(); err != nil { + log.Debug("Failed to connect to smart card", "reader", reader, "err", err) + card.Disconnect(pcsc.LeaveCard) + continue + } + // Card connected, start tracking in amongs the wallets + hub.wallets[reader] = wallet + events = append(events, accounts.WalletEvent{Wallet: wallet, Kind: accounts.WalletArrived}) + } + // Remove any wallets no longer present + for reader, wallet := range hub.wallets { + if _, ok := seen[reader]; !ok { + wallet.Close() + events = append(events, accounts.WalletEvent{Wallet: wallet, Kind: accounts.WalletDropped}) + delete(hub.wallets, reader) + } + } + hub.refreshed = time.Now() + hub.stateLock.Unlock() + + for _, event := range events { + hub.updateFeed.Send(event) + } +} + +// Subscribe implements accounts.Backend, creating an async subscription to +// receive notifications on the addition or removal of smart card wallets. +func (hub *Hub) Subscribe(sink chan<- accounts.WalletEvent) event.Subscription { + // We need the mutex to reliably start/stop the update loop + hub.stateLock.Lock() + defer hub.stateLock.Unlock() + + // Subscribe the caller and track the subscriber count + sub := hub.updateScope.Track(hub.updateFeed.Subscribe(sink)) + + // Subscribers require an active notification loop, start it + if !hub.updating { + hub.updating = true + go hub.updater() + } + return sub +} + +// updater is responsible for maintaining an up-to-date list of wallets managed +// by the smart card hub, and for firing wallet addition/removal events. +func (hub *Hub) updater() { + for { + // TODO: Wait for a USB hotplug event (not supported yet) or a refresh timeout + // <-hub.changes + time.Sleep(refreshCycle) + + // Run the wallet refresher + hub.refreshWallets() + + // If all our subscribers left, stop the updater + hub.stateLock.Lock() + if hub.updateScope.Count() == 0 { + hub.updating = false + hub.stateLock.Unlock() + return + } + hub.stateLock.Unlock() + } +} diff --git a/accounts/scwallet/securechannel.go b/accounts/scwallet/securechannel.go new file mode 100644 index 0000000000..078127d08e --- /dev/null +++ b/accounts/scwallet/securechannel.go @@ -0,0 +1,349 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package scwallet + +import ( + "bytes" + "crypto/aes" + "crypto/cipher" + "crypto/elliptic" + "crypto/rand" + "crypto/sha256" + "crypto/sha512" + "fmt" + + "github.com/ethereum/go-ethereum/crypto" + pcsc "github.com/gballet/go-libpcsclite" + "golang.org/x/crypto/pbkdf2" + "golang.org/x/text/unicode/norm" +) + +const ( + maxPayloadSize = 223 + pairP1FirstStep = 0 + pairP1LastStep = 1 + + scSecretLength = 32 + scBlockSize = 16 + + insOpenSecureChannel = 0x10 + insMutuallyAuthenticate = 0x11 + insPair = 0x12 + insUnpair = 0x13 + + pairingSalt = "Keycard Pairing Password Salt" +) + +// SecureChannelSession enables secure communication with a hardware wallet. +type SecureChannelSession struct { + card *pcsc.Card // A handle to the smartcard for communication + secret []byte // A shared secret generated from our ECDSA keys + publicKey []byte // Our own ephemeral public key + PairingKey []byte // A permanent shared secret for a pairing, if present + sessionEncKey []byte // The current session encryption key + sessionMacKey []byte // The current session MAC key + iv []byte // The current IV + PairingIndex uint8 // The pairing index +} + +// NewSecureChannelSession creates a new secure channel for the given card and public key. +func NewSecureChannelSession(card *pcsc.Card, keyData []byte) (*SecureChannelSession, error) { + // Generate an ECDSA keypair for ourselves + key, err := crypto.GenerateKey() + if err != nil { + return nil, err + } + cardPublic, err := crypto.UnmarshalPubkey(keyData) + if err != nil { + return nil, fmt.Errorf("could not unmarshal public key from card: %v", err) + } + secret, _ := key.Curve.ScalarMult(cardPublic.X, cardPublic.Y, key.D.Bytes()) + return &SecureChannelSession{ + card: card, + secret: secret.Bytes(), + publicKey: elliptic.Marshal(crypto.S256(), key.PublicKey.X, key.PublicKey.Y), + }, nil +} + +// Pair establishes a new pairing with the smartcard. +func (s *SecureChannelSession) Pair(pairingPassword []byte) error { + secretHash := pbkdf2.Key(norm.NFKD.Bytes(pairingPassword), norm.NFKD.Bytes([]byte(pairingSalt)), 50000, 32, sha256.New) + + challenge := make([]byte, 32) + if _, err := rand.Read(challenge); err != nil { + return err + } + + response, err := s.pair(pairP1FirstStep, challenge) + if err != nil { + return err + } + + md := sha256.New() + md.Write(secretHash[:]) + md.Write(challenge) + + expectedCryptogram := md.Sum(nil) + cardCryptogram := response.Data[:32] + cardChallenge := response.Data[32:64] + + if !bytes.Equal(expectedCryptogram, cardCryptogram) { + return fmt.Errorf("invalid card cryptogram %v != %v", expectedCryptogram, cardCryptogram) + } + + md.Reset() + md.Write(secretHash[:]) + md.Write(cardChallenge) + response, err = s.pair(pairP1LastStep, md.Sum(nil)) + if err != nil { + return err + } + + md.Reset() + md.Write(secretHash[:]) + md.Write(response.Data[1:]) + s.PairingKey = md.Sum(nil) + s.PairingIndex = response.Data[0] + + return nil +} + +// Unpair disestablishes an existing pairing. +func (s *SecureChannelSession) Unpair() error { + if s.PairingKey == nil { + return fmt.Errorf("cannot unpair: not paired") + } + + _, err := s.transmitEncrypted(claSCWallet, insUnpair, s.PairingIndex, 0, []byte{}) + if err != nil { + return err + } + s.PairingKey = nil + // Close channel + s.iv = nil + return nil +} + +// Open initializes the secure channel. +func (s *SecureChannelSession) Open() error { + if s.iv != nil { + return fmt.Errorf("session already opened") + } + + response, err := s.open() + if err != nil { + return err + } + + // Generate the encryption/mac key by hashing our shared secret, + // pairing key, and the first bytes returned from the Open APDU. + md := sha512.New() + md.Write(s.secret) + md.Write(s.PairingKey) + md.Write(response.Data[:scSecretLength]) + keyData := md.Sum(nil) + s.sessionEncKey = keyData[:scSecretLength] + s.sessionMacKey = keyData[scSecretLength : scSecretLength*2] + + // The IV is the last bytes returned from the Open APDU. + s.iv = response.Data[scSecretLength:] + + return s.mutuallyAuthenticate() +} + +// mutuallyAuthenticate is an internal method to authenticate both ends of the +// connection. +func (s *SecureChannelSession) mutuallyAuthenticate() error { + data := make([]byte, scSecretLength) + if _, err := rand.Read(data); err != nil { + return err + } + + response, err := s.transmitEncrypted(claSCWallet, insMutuallyAuthenticate, 0, 0, data) + if err != nil { + return err + } + if response.Sw1 != 0x90 || response.Sw2 != 0x00 { + return fmt.Errorf("got unexpected response from MUTUALLY_AUTHENTICATE: 0x%x%x", response.Sw1, response.Sw2) + } + + if len(response.Data) != scSecretLength { + return fmt.Errorf("response from MUTUALLY_AUTHENTICATE was %d bytes, expected %d", len(response.Data), scSecretLength) + } + + return nil +} + +// open is an internal method that sends an open APDU. +func (s *SecureChannelSession) open() (*responseAPDU, error) { + return transmit(s.card, &commandAPDU{ + Cla: claSCWallet, + Ins: insOpenSecureChannel, + P1: s.PairingIndex, + P2: 0, + Data: s.publicKey, + Le: 0, + }) +} + +// pair is an internal method that sends a pair APDU. +func (s *SecureChannelSession) pair(p1 uint8, data []byte) (*responseAPDU, error) { + return transmit(s.card, &commandAPDU{ + Cla: claSCWallet, + Ins: insPair, + P1: p1, + P2: 0, + Data: data, + Le: 0, + }) +} + +// transmitEncrypted sends an encrypted message, and decrypts and returns the response. +func (s *SecureChannelSession) transmitEncrypted(cla, ins, p1, p2 byte, data []byte) (*responseAPDU, error) { + if s.iv == nil { + return nil, fmt.Errorf("channel not open") + } + + data, err := s.encryptAPDU(data) + if err != nil { + return nil, err + } + meta := [16]byte{cla, ins, p1, p2, byte(len(data) + scBlockSize)} + if err = s.updateIV(meta[:], data); err != nil { + return nil, err + } + + fulldata := make([]byte, len(s.iv)+len(data)) + copy(fulldata, s.iv) + copy(fulldata[len(s.iv):], data) + + response, err := transmit(s.card, &commandAPDU{ + Cla: cla, + Ins: ins, + P1: p1, + P2: p2, + Data: fulldata, + }) + if err != nil { + return nil, err + } + + rmeta := [16]byte{byte(len(response.Data))} + rmac := response.Data[:len(s.iv)] + rdata := response.Data[len(s.iv):] + plainData, err := s.decryptAPDU(rdata) + if err != nil { + return nil, err + } + + if err = s.updateIV(rmeta[:], rdata); err != nil { + return nil, err + } + if !bytes.Equal(s.iv, rmac) { + return nil, fmt.Errorf("invalid MAC in response") + } + + rapdu := &responseAPDU{} + rapdu.deserialize(plainData) + + if rapdu.Sw1 != sw1Ok { + return nil, fmt.Errorf("unexpected response status Cla=0x%x, Ins=0x%x, Sw=0x%x%x", cla, ins, rapdu.Sw1, rapdu.Sw2) + } + + return rapdu, nil +} + +// encryptAPDU is an internal method that serializes and encrypts an APDU. +func (s *SecureChannelSession) encryptAPDU(data []byte) ([]byte, error) { + if len(data) > maxPayloadSize { + return nil, fmt.Errorf("payload of %d bytes exceeds maximum of %d", len(data), maxPayloadSize) + } + data = pad(data, 0x80) + + ret := make([]byte, len(data)) + + a, err := aes.NewCipher(s.sessionEncKey) + if err != nil { + return nil, err + } + crypter := cipher.NewCBCEncrypter(a, s.iv) + crypter.CryptBlocks(ret, data) + return ret, nil +} + +// pad applies message padding to a 16 byte boundary. +func pad(data []byte, terminator byte) []byte { + padded := make([]byte, (len(data)/16+1)*16) + copy(padded, data) + padded[len(data)] = terminator + return padded +} + +// decryptAPDU is an internal method that decrypts and deserializes an APDU. +func (s *SecureChannelSession) decryptAPDU(data []byte) ([]byte, error) { + a, err := aes.NewCipher(s.sessionEncKey) + if err != nil { + return nil, err + } + + ret := make([]byte, len(data)) + + crypter := cipher.NewCBCDecrypter(a, s.iv) + crypter.CryptBlocks(ret, data) + return unpad(ret, 0x80) +} + +// unpad strips padding from a message. +func unpad(data []byte, terminator byte) ([]byte, error) { + for i := 1; i <= 16; i++ { + switch data[len(data)-i] { + case 0: + continue + case terminator: + return data[:len(data)-i], nil + default: + return nil, fmt.Errorf("expected end of padding, got %d", data[len(data)-i]) + } + } + return nil, fmt.Errorf("expected end of padding, got 0") +} + +// updateIV is an internal method that updates the initialization vector after +// each message exchanged. +func (s *SecureChannelSession) updateIV(meta, data []byte) error { + data = pad(data, 0) + a, err := aes.NewCipher(s.sessionMacKey) + if err != nil { + return err + } + crypter := cipher.NewCBCEncrypter(a, make([]byte, 16)) + crypter.CryptBlocks(meta, meta) + crypter.CryptBlocks(data, data) + // The first 16 bytes of the last block is the MAC + s.iv = data[len(data)-32 : len(data)-16] + return nil +} diff --git a/accounts/scwallet/wallet.go b/accounts/scwallet/wallet.go new file mode 100644 index 0000000000..fe9332ba09 --- /dev/null +++ b/accounts/scwallet/wallet.go @@ -0,0 +1,1095 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package scwallet + +import ( + "bytes" + "context" + "crypto/hmac" + "crypto/sha256" + "crypto/sha512" + "encoding/asn1" + "encoding/binary" + "errors" + "fmt" + "math/big" + "regexp" + "sort" + "strings" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + pcsc "github.com/gballet/go-libpcsclite" + "github.com/status-im/keycard-go/derivationpath" +) + +// ErrPairingPasswordNeeded is returned if opening the smart card requires pairing with a pairing +// password. In this case, the calling application should request user input to enter +// the pairing password and send it back. +var ErrPairingPasswordNeeded = errors.New("smartcard: pairing password needed") + +// ErrPINNeeded is returned if opening the smart card requires a PIN code. In +// this case, the calling application should request user input to enter the PIN +// and send it back. +var ErrPINNeeded = errors.New("smartcard: pin needed") + +// ErrPINUnblockNeeded is returned if opening the smart card requires a PIN code, +// but all PIN attempts have already been exhausted. In this case the calling +// application should request user input for the PUK and a new PIN code to set +// fo the card. +var ErrPINUnblockNeeded = errors.New("smartcard: pin unblock needed") + +// ErrAlreadyOpen is returned if the smart card is attempted to be opened, but +// there is already a paired and unlocked session. +var ErrAlreadyOpen = errors.New("smartcard: already open") + +// ErrPubkeyMismatch is returned if the public key recovered from a signature +// does not match the one expected by the user. +var ErrPubkeyMismatch = errors.New("smartcard: recovered public key mismatch") + +var ( + appletAID = []byte{0xA0, 0x00, 0x00, 0x08, 0x04, 0x00, 0x01, 0x01, 0x01} + // DerivationSignatureHash is used to derive the public key from the signature of this hash + DerivationSignatureHash = sha256.Sum256(common.Hash{}.Bytes()) +) + +// List of APDU command-related constants +const ( + claISO7816 = 0 + claSCWallet = 0x80 + + insSelect = 0xA4 + insGetResponse = 0xC0 + sw1GetResponse = 0x61 + sw1Ok = 0x90 + + insVerifyPin = 0x20 + insUnblockPin = 0x22 + insExportKey = 0xC2 + insSign = 0xC0 + insLoadKey = 0xD0 + insDeriveKey = 0xD1 + insStatus = 0xF2 +) + +// List of ADPU command parameters +const ( + P1DeriveKeyFromMaster = uint8(0x00) + P1DeriveKeyFromParent = uint8(0x01) + P1DeriveKeyFromCurrent = uint8(0x10) + statusP1WalletStatus = uint8(0x00) + statusP1Path = uint8(0x01) + signP1PrecomputedHash = uint8(0x01) + signP2OnlyBlock = uint8(0x81) + exportP1Any = uint8(0x00) + exportP2Pubkey = uint8(0x01) +) + +// Minimum time to wait between self derivation attempts, even it the user is +// requesting accounts like crazy. +const selfDeriveThrottling = time.Second + +// Wallet represents a smartcard wallet instance. +type Wallet struct { + Hub *Hub // A handle to the Hub that instantiated this wallet. + PublicKey []byte // The wallet's public key (used for communication and identification, not signing!) + + lock sync.Mutex // Lock that gates access to struct fields and communication with the card + card *pcsc.Card // A handle to the smartcard interface for the wallet. + session *Session // The secure communication session with the card + log log.Logger // Contextual logger to tag the base with its id + + deriveNextPaths []accounts.DerivationPath // Next derivation paths for account auto-discovery (multiple bases supported) + deriveNextAddrs []common.Address // Next derived account addresses for auto-discovery (multiple bases supported) + deriveChain interfaces.ChainStateReader // Blockchain state reader to discover used account with + deriveReq chan chan struct{} // Channel to request a self-derivation on + deriveQuit chan chan error // Channel to terminate the self-deriver with +} + +// NewWallet constructs and returns a new Wallet instance. +func NewWallet(hub *Hub, card *pcsc.Card) *Wallet { + wallet := &Wallet{ + Hub: hub, + card: card, + } + return wallet +} + +// transmit sends an APDU to the smartcard and receives and decodes the response. +// It automatically handles requests by the card to fetch the return data separately, +// and returns an error if the response status code is not success. +func transmit(card *pcsc.Card, command *commandAPDU) (*responseAPDU, error) { + data, err := command.serialize() + if err != nil { + return nil, err + } + + responseData, _, err := card.Transmit(data) + if err != nil { + return nil, err + } + + response := new(responseAPDU) + if err = response.deserialize(responseData); err != nil { + return nil, err + } + + // Are we being asked to fetch the response separately? + if response.Sw1 == sw1GetResponse && (command.Cla != claISO7816 || command.Ins != insGetResponse) { + return transmit(card, &commandAPDU{ + Cla: claISO7816, + Ins: insGetResponse, + P1: 0, + P2: 0, + Data: nil, + Le: response.Sw2, + }) + } + + if response.Sw1 != sw1Ok { + return nil, fmt.Errorf("unexpected insecure response status Cla=0x%x, Ins=0x%x, Sw=0x%x%x", command.Cla, command.Ins, response.Sw1, response.Sw2) + } + + return response, nil +} + +// applicationInfo encodes information about the smartcard application - its +// instance UID and public key. +type applicationInfo struct { + InstanceUID []byte `asn1:"tag:15"` + PublicKey []byte `asn1:"tag:0"` +} + +// connect connects to the wallet application and establishes a secure channel with it. +// must be called before any other interaction with the wallet. +func (w *Wallet) connect() error { + w.lock.Lock() + defer w.lock.Unlock() + + appinfo, err := w.doselect() + if err != nil { + return err + } + + channel, err := NewSecureChannelSession(w.card, appinfo.PublicKey) + if err != nil { + return err + } + + w.PublicKey = appinfo.PublicKey + w.log = log.New("url", w.URL()) + w.session = &Session{ + Wallet: w, + Channel: channel, + } + return nil +} + +// doselect is an internal (unlocked) function to send a SELECT APDU to the card. +func (w *Wallet) doselect() (*applicationInfo, error) { + response, err := transmit(w.card, &commandAPDU{ + Cla: claISO7816, + Ins: insSelect, + P1: 4, + P2: 0, + Data: appletAID, + }) + if err != nil { + return nil, err + } + + appinfo := new(applicationInfo) + if _, err := asn1.UnmarshalWithParams(response.Data, appinfo, "tag:4"); err != nil { + return nil, err + } + return appinfo, nil +} + +// ping checks the card's status and returns an error if unsuccessful. +func (w *Wallet) ping() error { + w.lock.Lock() + defer w.lock.Unlock() + + // We can't ping if not paired + if !w.session.paired() { + return nil + } + if _, err := w.session.walletStatus(); err != nil { + return err + } + return nil +} + +// release releases any resources held by an open wallet instance. +func (w *Wallet) release() error { + if w.session != nil { + return w.session.release() + } + return nil +} + +// pair is an internal (unlocked) function for establishing a new pairing +// with the wallet. +func (w *Wallet) pair(puk []byte) error { + if w.session.paired() { + return fmt.Errorf("wallet already paired") + } + pairing, err := w.session.pair(puk) + if err != nil { + return err + } + if err = w.Hub.setPairing(w, &pairing); err != nil { + return err + } + return w.session.authenticate(pairing) +} + +// Unpair deletes an existing wallet pairing. +func (w *Wallet) Unpair(pin []byte) error { + w.lock.Lock() + defer w.lock.Unlock() + + if !w.session.paired() { + return fmt.Errorf("wallet %x not paired", w.PublicKey) + } + if err := w.session.verifyPin(pin); err != nil { + return fmt.Errorf("failed to verify pin: %s", err) + } + if err := w.session.unpair(); err != nil { + return fmt.Errorf("failed to unpair: %s", err) + } + if err := w.Hub.setPairing(w, nil); err != nil { + return err + } + return nil +} + +// URL retrieves the canonical path under which this wallet is reachable. It is +// user by upper layers to define a sorting order over all wallets from multiple +// backends. +func (w *Wallet) URL() accounts.URL { + return accounts.URL{ + Scheme: w.Hub.scheme, + Path: fmt.Sprintf("%x", w.PublicKey[1:5]), // Byte #0 isn't unique; 1:5 covers << 64K cards, bump to 1:9 for << 4M + } +} + +// Status returns a textual status to aid the user in the current state of the +// wallet. It also returns an error indicating any failure the wallet might have +// encountered. +func (w *Wallet) Status() (string, error) { + w.lock.Lock() + defer w.lock.Unlock() + + // If the card is not paired, we can only wait + if !w.session.paired() { + return "Unpaired, waiting for pairing password", nil + } + // Yay, we have an encrypted session, retrieve the actual status + status, err := w.session.walletStatus() + if err != nil { + return fmt.Sprintf("Failed: %v", err), err + } + switch { + case !w.session.verified && status.PinRetryCount == 0 && status.PukRetryCount == 0: + return "Bricked, waiting for full wipe", nil + case !w.session.verified && status.PinRetryCount == 0: + return fmt.Sprintf("Blocked, waiting for PUK (%d attempts left) and new PIN", status.PukRetryCount), nil + case !w.session.verified: + return fmt.Sprintf("Locked, waiting for PIN (%d attempts left)", status.PinRetryCount), nil + case !status.Initialized: + return "Empty, waiting for initialization", nil + default: + return "Online", nil + } +} + +// Open initializes access to a wallet instance. It is not meant to unlock or +// decrypt account keys, rather simply to establish a connection to hardware +// wallets and/or to access derivation seeds. +// +// The passphrase parameter may or may not be used by the implementation of a +// particular wallet instance. The reason there is no passwordless open method +// is to strive towards a uniform wallet handling, oblivious to the different +// backend providers. +// +// Please note, if you open a wallet, you must close it to release any allocated +// resources (especially important when working with hardware wallets). +func (w *Wallet) Open(passphrase string) error { + w.lock.Lock() + defer w.lock.Unlock() + + // If the session is already open, bail out + if w.session.verified { + return ErrAlreadyOpen + } + // If the smart card is not yet paired, attempt to do so either from a previous + // pairing key or form the supplied PUK code. + if !w.session.paired() { + // If a previous pairing exists, only ever try to use that + if pairing := w.Hub.pairing(w); pairing != nil { + if err := w.session.authenticate(*pairing); err != nil { + return fmt.Errorf("failed to authenticate card %x: %s", w.PublicKey[:4], err) + } + // Pairing still ok, fall through to PIN checks + } else { + // If no passphrase was supplied, request the PUK from the user + if passphrase == "" { + return ErrPairingPasswordNeeded + } + // Attempt to pair the smart card with the user supplied PUK + if err := w.pair([]byte(passphrase)); err != nil { + return err + } + // Pairing succeeded, fall through to PIN checks. This will of course fail, + // but we can't return ErrPINNeeded directly here because we don't know whether + // a PIN check or a PIN reset is needed. + passphrase = "" + } + } + // The smart card was successfully paired, retrieve its status to check whether + // PIN verification or unblocking is needed. + status, err := w.session.walletStatus() + if err != nil { + return err + } + // Request the appropriate next authentication data, or use the one supplied + switch { + case passphrase == "" && status.PinRetryCount > 0: + return ErrPINNeeded + case passphrase == "": + return ErrPINUnblockNeeded + case status.PinRetryCount > 0: + if !regexp.MustCompile(`^[0-9]{6,}$`).MatchString(passphrase) { + w.log.Error("PIN needs to be at least 6 digits") + return ErrPINNeeded + } + if err := w.session.verifyPin([]byte(passphrase)); err != nil { + return err + } + default: + if !regexp.MustCompile(`^[0-9]{12,}$`).MatchString(passphrase) { + w.log.Error("PUK needs to be at least 12 digits") + return ErrPINUnblockNeeded + } + if err := w.session.unblockPin([]byte(passphrase)); err != nil { + return err + } + } + // Smart card paired and unlocked, initialize and register + w.deriveReq = make(chan chan struct{}) + w.deriveQuit = make(chan chan error) + + go w.selfDerive() + + // Notify anyone listening for wallet events that a new device is accessible + go w.Hub.updateFeed.Send(accounts.WalletEvent{Wallet: w, Kind: accounts.WalletOpened}) + + return nil +} + +// Close stops and closes the wallet, freeing any resources. +func (w *Wallet) Close() error { + // Ensure the wallet was opened + w.lock.Lock() + dQuit := w.deriveQuit + w.lock.Unlock() + + // Terminate the self-derivations + var derr error + if dQuit != nil { + errc := make(chan error) + dQuit <- errc + derr = <-errc // Save for later, we *must* close the USB + } + // Terminate the device connection + w.lock.Lock() + defer w.lock.Unlock() + + w.deriveQuit = nil + w.deriveReq = nil + + if err := w.release(); err != nil { + return err + } + return derr +} + +// selfDerive is an account derivation loop that upon request attempts to find +// new non-zero accounts. +func (w *Wallet) selfDerive() { + w.log.Debug("Smart card wallet self-derivation started") + defer w.log.Debug("Smart card wallet self-derivation stopped") + + // Execute self-derivations until termination or error + var ( + reqc chan struct{} + errc chan error + err error + ) + for errc == nil && err == nil { + // Wait until either derivation or termination is requested + select { + case errc = <-w.deriveQuit: + // Termination requested + continue + case reqc = <-w.deriveReq: + // Account discovery requested + } + // Derivation needs a chain and device access, skip if either unavailable + w.lock.Lock() + if w.session == nil || w.deriveChain == nil { + w.lock.Unlock() + reqc <- struct{}{} + continue + } + pairing := w.Hub.pairing(w) + + // Device lock obtained, derive the next batch of accounts + var ( + paths []accounts.DerivationPath + nextAcc accounts.Account + + nextPaths = append([]accounts.DerivationPath{}, w.deriveNextPaths...) + nextAddrs = append([]common.Address{}, w.deriveNextAddrs...) + + context = context.Background() + ) + for i := 0; i < len(nextAddrs); i++ { + for empty := false; !empty; { + // Retrieve the next derived Ethereum account + if nextAddrs[i] == (common.Address{}) { + if nextAcc, err = w.session.derive(nextPaths[i]); err != nil { + w.log.Warn("Smartcard wallet account derivation failed", "err", err) + break + } + nextAddrs[i] = nextAcc.Address + } + // Check the account's status against the current chain state + var ( + balance *big.Int + nonce uint64 + ) + balance, err = w.deriveChain.BalanceAt(context, nextAddrs[i], nil) + if err != nil { + w.log.Warn("Smartcard wallet balance retrieval failed", "err", err) + break + } + nonce, err = w.deriveChain.NonceAt(context, nextAddrs[i], nil) + if err != nil { + w.log.Warn("Smartcard wallet nonce retrieval failed", "err", err) + break + } + // If the next account is empty, stop self-derivation, but add for the last base path + if balance.Sign() == 0 && nonce == 0 { + empty = true + if i < len(nextAddrs)-1 { + break + } + } + // We've just self-derived a new account, start tracking it locally + path := make(accounts.DerivationPath, len(nextPaths[i])) + copy(path[:], nextPaths[i][:]) + paths = append(paths, path) + + // Display a log message to the user for new (or previously empty accounts) + if _, known := pairing.Accounts[nextAddrs[i]]; !known || !empty || nextAddrs[i] != w.deriveNextAddrs[i] { + w.log.Info("Smartcard wallet discovered new account", "address", nextAddrs[i], "path", path, "balance", balance, "nonce", nonce) + } + pairing.Accounts[nextAddrs[i]] = path + + // Fetch the next potential account + if !empty { + nextAddrs[i] = common.Address{} + nextPaths[i][len(nextPaths[i])-1]++ + } + } + } + // If there are new accounts, write them out + if len(paths) > 0 { + err = w.Hub.setPairing(w, pairing) + } + // Shift the self-derivation forward + w.deriveNextAddrs = nextAddrs + w.deriveNextPaths = nextPaths + + // Self derivation complete, release device lock + w.lock.Unlock() + + // Notify the user of termination and loop after a bit of time (to avoid trashing) + reqc <- struct{}{} + if err == nil { + select { + case errc = <-w.deriveQuit: + // Termination requested, abort + case <-time.After(selfDeriveThrottling): + // Waited enough, willing to self-derive again + } + } + } + // In case of error, wait for termination + if err != nil { + w.log.Debug("Smartcard wallet self-derivation failed", "err", err) + errc = <-w.deriveQuit + } + errc <- err +} + +// Accounts retrieves the list of signing accounts the wallet is currently aware +// of. For hierarchical deterministic wallets, the list will not be exhaustive, +// rather only contain the accounts explicitly pinned during account derivation. +func (w *Wallet) Accounts() []accounts.Account { + // Attempt self-derivation if it's running + reqc := make(chan struct{}, 1) + select { + case w.deriveReq <- reqc: + // Self-derivation request accepted, wait for it + <-reqc + default: + // Self-derivation offline, throttled or busy, skip + } + + w.lock.Lock() + defer w.lock.Unlock() + + if pairing := w.Hub.pairing(w); pairing != nil { + ret := make([]accounts.Account, 0, len(pairing.Accounts)) + for address, path := range pairing.Accounts { + ret = append(ret, w.makeAccount(address, path)) + } + sort.Sort(accounts.AccountsByURL(ret)) + return ret + } + return nil +} + +func (w *Wallet) makeAccount(address common.Address, path accounts.DerivationPath) accounts.Account { + return accounts.Account{ + Address: address, + URL: accounts.URL{ + Scheme: w.Hub.scheme, + Path: fmt.Sprintf("%x/%s", w.PublicKey[1:3], path.String()), + }, + } +} + +// Contains returns whether an account is part of this particular wallet or not. +func (w *Wallet) Contains(account accounts.Account) bool { + if pairing := w.Hub.pairing(w); pairing != nil { + _, ok := pairing.Accounts[account.Address] + return ok + } + return false +} + +// Initialize installs a keypair generated from the provided key into the wallet. +func (w *Wallet) Initialize(seed []byte) error { + go w.selfDerive() + // DO NOT lock at this stage, as the initialize + // function relies on Status() + return w.session.initialize(seed) +} + +// Derive attempts to explicitly derive a hierarchical deterministic account at +// the specified derivation path. If requested, the derived account will be added +// to the wallet's tracked account list. +func (w *Wallet) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error) { + w.lock.Lock() + defer w.lock.Unlock() + + account, err := w.session.derive(path) + if err != nil { + return accounts.Account{}, err + } + + if pin { + pairing := w.Hub.pairing(w) + pairing.Accounts[account.Address] = path + if err := w.Hub.setPairing(w, pairing); err != nil { + return accounts.Account{}, err + } + } + + return account, nil +} + +// SelfDerive sets a base account derivation path from which the wallet attempts +// to discover non zero accounts and automatically add them to list of tracked +// accounts. +// +// Note, self derivation will increment the last component of the specified path +// opposed to decending into a child path to allow discovering accounts starting +// from non zero components. +// +// Some hardware wallets switched derivation paths through their evolution, so +// this method supports providing multiple bases to discover old user accounts +// too. Only the last base will be used to derive the next empty account. +// +// You can disable automatic account discovery by calling SelfDerive with a nil +// chain state reader. +func (w *Wallet) SelfDerive(bases []accounts.DerivationPath, chain interfaces.ChainStateReader) { + w.lock.Lock() + defer w.lock.Unlock() + + w.deriveNextPaths = make([]accounts.DerivationPath, len(bases)) + for i, base := range bases { + w.deriveNextPaths[i] = make(accounts.DerivationPath, len(base)) + copy(w.deriveNextPaths[i][:], base[:]) + } + w.deriveNextAddrs = make([]common.Address, len(bases)) + w.deriveChain = chain +} + +// SignData requests the wallet to sign the hash of the given data. +// +// It looks up the account specified either solely via its address contained within, +// or optionally with the aid of any location metadata from the embedded URL field. +// +// If the wallet requires additional authentication to sign the request (e.g. +// a password to decrypt the account, or a PIN code o verify the transaction), +// an AuthNeededError instance will be returned, containing infos for the user +// about which fields or actions are needed. The user may retry by providing +// the needed details via SignDataWithPassphrase, or by other means (e.g. unlock +// the account in a keystore). +func (w *Wallet) SignData(account accounts.Account, mimeType string, data []byte) ([]byte, error) { + return w.signHash(account, crypto.Keccak256(data)) +} + +func (w *Wallet) signHash(account accounts.Account, hash []byte) ([]byte, error) { + w.lock.Lock() + defer w.lock.Unlock() + + path, err := w.findAccountPath(account) + if err != nil { + return nil, err + } + + return w.session.sign(path, hash) +} + +// SignTx requests the wallet to sign the given transaction. +// +// It looks up the account specified either solely via its address contained within, +// or optionally with the aid of any location metadata from the embedded URL field. +// +// If the wallet requires additional authentication to sign the request (e.g. +// a password to decrypt the account, or a PIN code o verify the transaction), +// an AuthNeededError instance will be returned, containing infos for the user +// about which fields or actions are needed. The user may retry by providing +// the needed details via SignTxWithPassphrase, or by other means (e.g. unlock +// the account in a keystore). +func (w *Wallet) SignTx(account accounts.Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + signer := types.LatestSignerForChainID(chainID) + hash := signer.Hash(tx) + sig, err := w.signHash(account, hash[:]) + if err != nil { + return nil, err + } + return tx.WithSignature(signer, sig) +} + +// SignDataWithPassphrase requests the wallet to sign the given hash with the +// given passphrase as extra authentication information. +// +// It looks up the account specified either solely via its address contained within, +// or optionally with the aid of any location metadata from the embedded URL field. +func (w *Wallet) SignDataWithPassphrase(account accounts.Account, passphrase, mimeType string, data []byte) ([]byte, error) { + return w.signHashWithPassphrase(account, passphrase, crypto.Keccak256(data)) +} + +func (w *Wallet) signHashWithPassphrase(account accounts.Account, passphrase string, hash []byte) ([]byte, error) { + if !w.session.verified { + if err := w.Open(passphrase); err != nil { + return nil, err + } + } + + return w.signHash(account, hash) +} + +// SignText requests the wallet to sign the hash of a given piece of data, prefixed +// by the Ethereum prefix scheme +// It looks up the account specified either solely via its address contained within, +// or optionally with the aid of any location metadata from the embedded URL field. +// +// If the wallet requires additional authentication to sign the request (e.g. +// a password to decrypt the account, or a PIN code o verify the transaction), +// an AuthNeededError instance will be returned, containing infos for the user +// about which fields or actions are needed. The user may retry by providing +// the needed details via SignHashWithPassphrase, or by other means (e.g. unlock +// the account in a keystore). +func (w *Wallet) SignText(account accounts.Account, text []byte) ([]byte, error) { + return w.signHash(account, accounts.TextHash(text)) +} + +// SignTextWithPassphrase implements accounts.Wallet, attempting to sign the +// given hash with the given account using passphrase as extra authentication +func (w *Wallet) SignTextWithPassphrase(account accounts.Account, passphrase string, text []byte) ([]byte, error) { + return w.signHashWithPassphrase(account, passphrase, crypto.Keccak256(accounts.TextHash(text))) +} + +// SignTxWithPassphrase requests the wallet to sign the given transaction, with the +// given passphrase as extra authentication information. +// +// It looks up the account specified either solely via its address contained within, +// or optionally with the aid of any location metadata from the embedded URL field. +func (w *Wallet) SignTxWithPassphrase(account accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) { + if !w.session.verified { + if err := w.Open(passphrase); err != nil { + return nil, err + } + } + return w.SignTx(account, tx, chainID) +} + +// findAccountPath returns the derivation path for the provided account. +// It first checks for the address in the list of pinned accounts, and if it is +// not found, attempts to parse the derivation path from the account's URL. +func (w *Wallet) findAccountPath(account accounts.Account) (accounts.DerivationPath, error) { + pairing := w.Hub.pairing(w) + if path, ok := pairing.Accounts[account.Address]; ok { + return path, nil + } + + // Look for the path in the URL + if account.URL.Scheme != w.Hub.scheme { + return nil, fmt.Errorf("scheme %s does not match wallet scheme %s", account.URL.Scheme, w.Hub.scheme) + } + + parts := strings.SplitN(account.URL.Path, "/", 2) + if len(parts) != 2 { + return nil, fmt.Errorf("invalid URL format: %s", account.URL) + } + + if parts[0] != fmt.Sprintf("%x", w.PublicKey[1:3]) { + return nil, fmt.Errorf("URL %s is not for this wallet", account.URL) + } + + return accounts.ParseDerivationPath(parts[1]) +} + +// Session represents a secured communication session with the wallet. +type Session struct { + Wallet *Wallet // A handle to the wallet that opened the session + Channel *SecureChannelSession // A secure channel for encrypted messages + verified bool // Whether the pin has been verified in this session. +} + +// pair establishes a new pairing over this channel, using the provided secret. +func (s *Session) pair(secret []byte) (smartcardPairing, error) { + err := s.Channel.Pair(secret) + if err != nil { + return smartcardPairing{}, err + } + + return smartcardPairing{ + PublicKey: s.Wallet.PublicKey, + PairingIndex: s.Channel.PairingIndex, + PairingKey: s.Channel.PairingKey, + Accounts: make(map[common.Address]accounts.DerivationPath), + }, nil +} + +// unpair deletes an existing pairing. +func (s *Session) unpair() error { + if !s.verified { + return fmt.Errorf("unpair requires that the PIN be verified") + } + return s.Channel.Unpair() +} + +// verifyPin unlocks a wallet with the provided pin. +func (s *Session) verifyPin(pin []byte) error { + if _, err := s.Channel.transmitEncrypted(claSCWallet, insVerifyPin, 0, 0, pin); err != nil { + return err + } + s.verified = true + return nil +} + +// unblockPin unblocks a wallet with the provided puk and resets the pin to the +// new one specified. +func (s *Session) unblockPin(pukpin []byte) error { + if _, err := s.Channel.transmitEncrypted(claSCWallet, insUnblockPin, 0, 0, pukpin); err != nil { + return err + } + s.verified = true + return nil +} + +// release releases resources associated with the channel. +func (s *Session) release() error { + return s.Wallet.card.Disconnect(pcsc.LeaveCard) +} + +// paired returns true if a valid pairing exists. +func (s *Session) paired() bool { + return s.Channel.PairingKey != nil +} + +// authenticate uses an existing pairing to establish a secure channel. +func (s *Session) authenticate(pairing smartcardPairing) error { + if !bytes.Equal(s.Wallet.PublicKey, pairing.PublicKey) { + return fmt.Errorf("cannot pair using another wallet's pairing; %x != %x", s.Wallet.PublicKey, pairing.PublicKey) + } + s.Channel.PairingKey = pairing.PairingKey + s.Channel.PairingIndex = pairing.PairingIndex + return s.Channel.Open() +} + +// walletStatus describes a smartcard wallet's status information. +type walletStatus struct { + PinRetryCount int // Number of remaining PIN retries + PukRetryCount int // Number of remaining PUK retries + Initialized bool // Whether the card has been initialized with a private key +} + +// walletStatus fetches the wallet's status from the card. +func (s *Session) walletStatus() (*walletStatus, error) { + response, err := s.Channel.transmitEncrypted(claSCWallet, insStatus, statusP1WalletStatus, 0, nil) + if err != nil { + return nil, err + } + + status := new(walletStatus) + if _, err := asn1.UnmarshalWithParams(response.Data, status, "tag:3"); err != nil { + return nil, err + } + return status, nil +} + +// derivationPath fetches the wallet's current derivation path from the card. +//lint:ignore U1000 needs to be added to the console interface +func (s *Session) derivationPath() (accounts.DerivationPath, error) { + response, err := s.Channel.transmitEncrypted(claSCWallet, insStatus, statusP1Path, 0, nil) + if err != nil { + return nil, err + } + buf := bytes.NewReader(response.Data) + path := make(accounts.DerivationPath, len(response.Data)/4) + return path, binary.Read(buf, binary.BigEndian, &path) +} + +// initializeData contains data needed to initialize the smartcard wallet. +type initializeData struct { + PublicKey []byte `asn1:"tag:0"` + PrivateKey []byte `asn1:"tag:1"` + ChainCode []byte `asn1:"tag:2"` +} + +// initialize initializes the card with new key data. +func (s *Session) initialize(seed []byte) error { + // Check that the wallet isn't currently initialized, + // otherwise the key would be overwritten. + status, err := s.Wallet.Status() + if err != nil { + return err + } + if status == "Online" { + return fmt.Errorf("card is already initialized, cowardly refusing to proceed") + } + + s.Wallet.lock.Lock() + defer s.Wallet.lock.Unlock() + + // HMAC the seed to produce the private key and chain code + mac := hmac.New(sha512.New, []byte("Bitcoin seed")) + mac.Write(seed) + seed = mac.Sum(nil) + + key, err := crypto.ToECDSA(seed[:32]) + if err != nil { + return err + } + + id := initializeData{} + id.PublicKey = crypto.FromECDSAPub(&key.PublicKey) + id.PrivateKey = seed[:32] + id.ChainCode = seed[32:] + data, err := asn1.Marshal(id) + if err != nil { + return err + } + + // Nasty hack to force the top-level struct tag to be context-specific + data[0] = 0xA1 + + _, err = s.Channel.transmitEncrypted(claSCWallet, insLoadKey, 0x02, 0, data) + return err +} + +// derive derives a new HD key path on the card. +func (s *Session) derive(path accounts.DerivationPath) (accounts.Account, error) { + startingPoint, path, err := derivationpath.Decode(path.String()) + if err != nil { + return accounts.Account{}, err + } + + var p1 uint8 + switch startingPoint { + case derivationpath.StartingPointMaster: + p1 = P1DeriveKeyFromMaster + case derivationpath.StartingPointParent: + p1 = P1DeriveKeyFromParent + case derivationpath.StartingPointCurrent: + p1 = P1DeriveKeyFromCurrent + default: + return accounts.Account{}, fmt.Errorf("invalid startingPoint %d", startingPoint) + } + + data := new(bytes.Buffer) + for _, segment := range path { + if err := binary.Write(data, binary.BigEndian, segment); err != nil { + return accounts.Account{}, err + } + } + + _, err = s.Channel.transmitEncrypted(claSCWallet, insDeriveKey, p1, 0, data.Bytes()) + if err != nil { + return accounts.Account{}, err + } + + response, err := s.Channel.transmitEncrypted(claSCWallet, insSign, 0, 0, DerivationSignatureHash[:]) + if err != nil { + return accounts.Account{}, err + } + + sigdata := new(signatureData) + if _, err := asn1.UnmarshalWithParams(response.Data, sigdata, "tag:0"); err != nil { + return accounts.Account{}, err + } + rbytes, sbytes := sigdata.Signature.R.Bytes(), sigdata.Signature.S.Bytes() + sig := make([]byte, 65) + copy(sig[32-len(rbytes):32], rbytes) + copy(sig[64-len(sbytes):64], sbytes) + + if err := confirmPublicKey(sig, sigdata.PublicKey); err != nil { + return accounts.Account{}, err + } + pub, err := crypto.UnmarshalPubkey(sigdata.PublicKey) + if err != nil { + return accounts.Account{}, err + } + return s.Wallet.makeAccount(crypto.PubkeyToAddress(*pub), path), nil +} + +// keyExport contains information on an exported keypair. +//lint:ignore U1000 needs to be added to the console interface +type keyExport struct { + PublicKey []byte `asn1:"tag:0"` + PrivateKey []byte `asn1:"tag:1,optional"` +} + +// publicKey returns the public key for the current derivation path. +//lint:ignore U1000 needs to be added to the console interface +func (s *Session) publicKey() ([]byte, error) { + response, err := s.Channel.transmitEncrypted(claSCWallet, insExportKey, exportP1Any, exportP2Pubkey, nil) + if err != nil { + return nil, err + } + keys := new(keyExport) + if _, err := asn1.UnmarshalWithParams(response.Data, keys, "tag:1"); err != nil { + return nil, err + } + return keys.PublicKey, nil +} + +// signatureData contains information on a signature - the signature itself and +// the corresponding public key. +type signatureData struct { + PublicKey []byte `asn1:"tag:0"` + Signature struct { + R *big.Int + S *big.Int + } +} + +// sign asks the card to sign a message, and returns a valid signature after +// recovering the v value. +func (s *Session) sign(path accounts.DerivationPath, hash []byte) ([]byte, error) { + startTime := time.Now() + _, err := s.derive(path) + if err != nil { + return nil, err + } + deriveTime := time.Now() + + response, err := s.Channel.transmitEncrypted(claSCWallet, insSign, signP1PrecomputedHash, signP2OnlyBlock, hash) + if err != nil { + return nil, err + } + sigdata := new(signatureData) + if _, err := asn1.UnmarshalWithParams(response.Data, sigdata, "tag:0"); err != nil { + return nil, err + } + // Serialize the signature + rbytes, sbytes := sigdata.Signature.R.Bytes(), sigdata.Signature.S.Bytes() + sig := make([]byte, 65) + copy(sig[32-len(rbytes):32], rbytes) + copy(sig[64-len(sbytes):64], sbytes) + + // Recover the V value. + sig, err = makeRecoverableSignature(hash, sig, sigdata.PublicKey) + if err != nil { + return nil, err + } + log.Debug("Signed using smartcard", "deriveTime", deriveTime.Sub(startTime), "signingTime", time.Since(deriveTime)) + + return sig, nil +} + +// confirmPublicKey confirms that the given signature belongs to the specified key. +func confirmPublicKey(sig, pubkey []byte) error { + _, err := makeRecoverableSignature(DerivationSignatureHash[:], sig, pubkey) + return err +} + +// makeRecoverableSignature uses a signature and an expected public key to +// recover the v value and produce a recoverable signature. +func makeRecoverableSignature(hash, sig, expectedPubkey []byte) ([]byte, error) { + var libraryError error + for v := 0; v < 2; v++ { + sig[64] = byte(v) + if pubkey, err := crypto.Ecrecover(hash, sig); err == nil { + if bytes.Equal(pubkey, expectedPubkey) { + return sig, nil + } + } else { + libraryError = err + } + } + if libraryError != nil { + return nil, libraryError + } + return nil, ErrPubkeyMismatch +} diff --git a/accounts/sort.go b/accounts/sort.go new file mode 100644 index 0000000000..16ec896863 --- /dev/null +++ b/accounts/sort.go @@ -0,0 +1,41 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +// AccountsByURL implements sort.Interface for []Account based on the URL field. +type AccountsByURL []Account + +func (a AccountsByURL) Len() int { return len(a) } +func (a AccountsByURL) Swap(i, j int) { a[i], a[j] = a[j], a[i] } +func (a AccountsByURL) Less(i, j int) bool { return a[i].URL.Cmp(a[j].URL) < 0 } + +// WalletsByURL implements sort.Interface for []Wallet based on the URL field. +type WalletsByURL []Wallet + +func (w WalletsByURL) Len() int { return len(w) } +func (w WalletsByURL) Swap(i, j int) { w[i], w[j] = w[j], w[i] } +func (w WalletsByURL) Less(i, j int) bool { return w[i].URL().Cmp(w[j].URL()) < 0 } diff --git a/accounts/url.go b/accounts/url.go new file mode 100644 index 0000000000..5764f9773a --- /dev/null +++ b/accounts/url.go @@ -0,0 +1,114 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +import ( + "encoding/json" + "errors" + "fmt" + "strings" +) + +// URL represents the canonical identification URL of a wallet or account. +// +// It is a simplified version of url.URL, with the important limitations (which +// are considered features here) that it contains value-copyable components only, +// as well as that it doesn't do any URL encoding/decoding of special characters. +// +// The former is important to allow an account to be copied without leaving live +// references to the original version, whereas the latter is important to ensure +// one single canonical form opposed to many allowed ones by the RFC 3986 spec. +// +// As such, these URLs should not be used outside of the scope of an Ethereum +// wallet or account. +type URL struct { + Scheme string // Protocol scheme to identify a capable account backend + Path string // Path for the backend to identify a unique entity +} + +// parseURL converts a user supplied URL into the accounts specific structure. +func parseURL(url string) (URL, error) { + parts := strings.Split(url, "://") + if len(parts) != 2 || parts[0] == "" { + return URL{}, errors.New("protocol scheme missing") + } + return URL{ + Scheme: parts[0], + Path: parts[1], + }, nil +} + +// String implements the stringer interface. +func (u URL) String() string { + if u.Scheme != "" { + return fmt.Sprintf("%s://%s", u.Scheme, u.Path) + } + return u.Path +} + +// TerminalString implements the log.TerminalStringer interface. +func (u URL) TerminalString() string { + url := u.String() + if len(url) > 32 { + return url[:31] + ".." + } + return url +} + +// MarshalJSON implements the json.Marshaller interface. +func (u URL) MarshalJSON() ([]byte, error) { + return json.Marshal(u.String()) +} + +// UnmarshalJSON parses url. +func (u *URL) UnmarshalJSON(input []byte) error { + var textURL string + err := json.Unmarshal(input, &textURL) + if err != nil { + return err + } + url, err := parseURL(textURL) + if err != nil { + return err + } + u.Scheme = url.Scheme + u.Path = url.Path + return nil +} + +// Cmp compares x and y and returns: +// +// -1 if x < y +// 0 if x == y +// +1 if x > y +// +func (u URL) Cmp(url URL) int { + if u.Scheme == url.Scheme { + return strings.Compare(u.Path, url.Path) + } + return strings.Compare(u.Scheme, url.Scheme) +} diff --git a/accounts/url_test.go b/accounts/url_test.go new file mode 100644 index 0000000000..6de26f18e9 --- /dev/null +++ b/accounts/url_test.go @@ -0,0 +1,106 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package accounts + +import ( + "testing" +) + +func TestURLParsing(t *testing.T) { + url, err := parseURL("https://ethereum.org") + if err != nil { + t.Errorf("unexpected error: %v", err) + } + if url.Scheme != "https" { + t.Errorf("expected: %v, got: %v", "https", url.Scheme) + } + if url.Path != "ethereum.org" { + t.Errorf("expected: %v, got: %v", "ethereum.org", url.Path) + } + + _, err = parseURL("ethereum.org") + if err == nil { + t.Error("expected err, got: nil") + } +} + +func TestURLString(t *testing.T) { + url := URL{Scheme: "https", Path: "ethereum.org"} + if url.String() != "https://ethereum.org" { + t.Errorf("expected: %v, got: %v", "https://ethereum.org", url.String()) + } + + url = URL{Scheme: "", Path: "ethereum.org"} + if url.String() != "ethereum.org" { + t.Errorf("expected: %v, got: %v", "ethereum.org", url.String()) + } +} + +func TestURLMarshalJSON(t *testing.T) { + url := URL{Scheme: "https", Path: "ethereum.org"} + json, err := url.MarshalJSON() + if err != nil { + t.Errorf("unexpcted error: %v", err) + } + if string(json) != "\"https://ethereum.org\"" { + t.Errorf("expected: %v, got: %v", "\"https://ethereum.org\"", string(json)) + } +} + +func TestURLUnmarshalJSON(t *testing.T) { + url := &URL{} + err := url.UnmarshalJSON([]byte("\"https://ethereum.org\"")) + if err != nil { + t.Errorf("unexpcted error: %v", err) + } + if url.Scheme != "https" { + t.Errorf("expected: %v, got: %v", "https", url.Scheme) + } + if url.Path != "ethereum.org" { + t.Errorf("expected: %v, got: %v", "https", url.Path) + } +} + +func TestURLComparison(t *testing.T) { + tests := []struct { + urlA URL + urlB URL + expect int + }{ + {URL{"https", "ethereum.org"}, URL{"https", "ethereum.org"}, 0}, + {URL{"http", "ethereum.org"}, URL{"https", "ethereum.org"}, -1}, + {URL{"https", "ethereum.org/a"}, URL{"https", "ethereum.org"}, 1}, + {URL{"https", "abc.org"}, URL{"https", "ethereum.org"}, -1}, + } + + for i, tt := range tests { + result := tt.urlA.Cmp(tt.urlB) + if result != tt.expect { + t.Errorf("test %d: cmp mismatch: expected: %d, got: %d", i, tt.expect, result) + } + } +} diff --git a/chain/chain_test.go b/chain/chain_test.go new file mode 100644 index 0000000000..91ad513b57 --- /dev/null +++ b/chain/chain_test.go @@ -0,0 +1,230 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package chain + +import ( + cryptorand "crypto/rand" + "math/big" + "math/rand" + "testing" + + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/subnet-evm/accounts/keystore" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/eth" + "github.com/ava-labs/subnet-evm/eth/ethconfig" + "github.com/ava-labs/subnet-evm/node" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +type testChain struct { + t *testing.T + name string + hasBlock map[common.Hash]struct{} + blocks []common.Hash + blkCount uint32 + chain *ETHChain + outBlockCh chan<- []byte + inAckCh <-chan struct{} +} + +func (tc *testChain) insertBlock(block *types.Block) { + if _, ok := tc.hasBlock[block.Hash()]; !ok { + tc.hasBlock[block.Hash()] = struct{}{} + tc.blocks = append(tc.blocks, block.Hash()) + } +} + +func newTestChain(name string, config *eth.Config, + inBlockCh <-chan []byte, outBlockCh chan<- []byte, + inAckCh <-chan struct{}, outAckCh chan<- struct{}, + t *testing.T) *testChain { + chain, err := NewETHChain( + config, + &node.Config{}, + rawdb.NewMemoryDatabase(), + eth.DefaultSettings, + common.Hash{}, + &mockable.Clock{}, + ) + if err != nil { + t.Fatal(err) + } + tc := &testChain{ + t: t, + name: name, + hasBlock: make(map[common.Hash]struct{}), + blocks: make([]common.Hash, 0), + blkCount: 0, + chain: chain, + outBlockCh: outBlockCh, + inAckCh: inAckCh, + } + tc.insertBlock(tc.chain.GetGenesisBlock()) + // Start a goroutine to deserialize and insert each block received from [inBlockCh] + // and send an acknowledgement via [outAckCh] + go func() { + for serialized := range inBlockCh { + block := new(types.Block) + err := rlp.DecodeBytes(serialized, block) + if err != nil { + panic(err) + } + if block.Hash() != tc.chain.GetGenesisBlock().Hash() { + if err = tc.chain.InsertBlock(block); err != nil { + tc.t.Fatalf("Failed to insert block for chain %q: %s", name, err) + } + } + tc.insertBlock(block) + outAckCh <- struct{}{} + } + }() + return tc +} + +func (tc *testChain) start() { + tc.chain.Start() +} + +func (tc *testChain) stop() { + tc.chain.Stop() +} + +func (tc *testChain) GenRandomTree(genBlocks int) { + for i := 0; i < genBlocks; i++ { + numBlocks := len(tc.blocks) + parentIndex := rand.Intn(numBlocks) + parentBlockHash := tc.blocks[parentIndex] + parentBlock := tc.chain.GetBlockByHash(parentBlockHash) + if parentBlock == nil { + tc.t.Fatalf("Failed to get parent block by hash %s, %d", parentBlockHash, numBlocks) + } + if err := tc.chain.SetPreference(parentBlock); err != nil { + tc.t.Fatal(err) + } + block, err := tc.chain.GenerateBlock() + if err != nil { + tc.t.Fatalf("chain %s failed to generate block: %s", tc.name, err) + } + // Add randomness to header to create slightly different blocks + h := block.Header() + randData := make([]byte, 20) + if _, err := rand.Read(randData); err != nil { + tc.t.Fatal(err) + } + h.Coinbase = common.BytesToAddress(randData) + block = block.WithSeal(h) + if err := tc.chain.InsertBlock(block); err != nil { + tc.t.Fatal(err) + } + + tc.blkCount++ + if len(block.Uncles()) != 0 { + tc.t.Fatal("#uncles should be zero") + } + tc.insertBlock(block) + if tc.outBlockCh != nil { + serialized, err := rlp.EncodeToBytes(block) + if err != nil { + tc.t.Fatal(err) + } + tc.outBlockCh <- serialized + <-tc.inAckCh + } + } +} + +func run(config *eth.Config, size1, size2 int, t *testing.T) { + aliceBlk := make(chan []byte) + bobBlk := make(chan []byte) + aliceAck := make(chan struct{}) + bobAck := make(chan struct{}) + alice := newTestChain("alice", config, bobBlk, aliceBlk, bobAck, aliceAck, t) + bob := newTestChain("bob", config, aliceBlk, bobBlk, aliceAck, bobAck, t) + alice.start() + bob.start() + log.Info("alice genesis", "block", alice.chain.GetGenesisBlock().Hash().Hex()) + log.Info("bob genesis", "block", bob.chain.GetGenesisBlock().Hash().Hex()) + alice.GenRandomTree(size1) + log.Info("alice finished generating the tree") + + bob.outBlockCh = nil + bob.GenRandomTree(size2) + for i := range bob.blocks { + serialized, err := rlp.EncodeToBytes(bob.chain.GetBlockByHash(bob.blocks[i])) + if err != nil { + t.Fatal(err) + } + bobBlk <- serialized + <-aliceAck + } + log.Info("bob finished generating the tree") + + log.Info("comparing two trees") + if len(alice.blocks) != len(bob.blocks) { + t.Fatalf("mismatching tree size %d != %d", len(alice.blocks), len(bob.blocks)) + } + gn := big.NewInt(0) + for i := range alice.blocks { + ablk := alice.chain.GetBlockByHash(alice.blocks[i]) + bblk := bob.chain.GetBlockByHash(alice.blocks[i]) + for ablk.Number().Cmp(gn) > 0 && bblk.Number().Cmp(gn) > 0 { + result := ablk.Hash() == bblk.Hash() + if !result { + t.Fatal("mismatching path") + } + ablk = alice.chain.GetBlockByHash(ablk.ParentHash()) + bblk = bob.chain.GetBlockByHash(bblk.ParentHash()) + } + } + alice.stop() + bob.stop() +} + +// TestChain randomly generates a chain (tree of blocks) on each of two +// entities ("Alice" and "Bob") and lets them exchange each other's blocks via +// a go channel and finally checks if they have the identical chain structure. +func TestChain(t *testing.T) { + // configure the chain + config := ethconfig.DefaultConfig + chainConfig := ¶ms.ChainConfig{ + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP150Hash: common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(0), + IstanbulBlock: big.NewInt(0), + SubnetEVMTimestamp: big.NewInt(0), + FeeConfig: params.DefaultFeeConfig, + } + + // reduce block gas cost since we use no tx in the blocks + chainConfig.FeeConfig.MaxBlockGasCost = common.Big0 + + // configure the genesis block + genBalance := big.NewInt(100000000000000000) + genKey, _ := keystore.NewKey(cryptorand.Reader) + + config.Genesis = &core.Genesis{ + Config: chainConfig, + Nonce: 0, + Number: 0, + ExtraData: hexutil.MustDecode("0x00"), + GasLimit: 100000000, + Difficulty: big.NewInt(0), + Alloc: core.GenesisAlloc{genKey.Address: {Balance: genBalance}}, + } + + run(&config, 20, 20, t) +} diff --git a/chain/counter.sol b/chain/counter.sol new file mode 100644 index 0000000000..952b92556a --- /dev/null +++ b/chain/counter.sol @@ -0,0 +1,14 @@ +pragma solidity >=0.6.0; + +contract Counter { + uint256 x; + + constructor() public { + x = 42; + } + + function add(uint256 y) public returns (uint256) { + x = x + y; + return x; + } +} diff --git a/chain/counter_test.go b/chain/counter_test.go new file mode 100644 index 0000000000..f150ff2a54 --- /dev/null +++ b/chain/counter_test.go @@ -0,0 +1,116 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. + +// NOTE from Ted: to compile from solidity source using the code, make sure +// your solc<0.8.0, as geth 1.9.21 does not support the JSON output from +// solc>=0.8.0: +// See: +// - https://github.com/ethereum/go-ethereum/issues/22041 +// - https://github.com/ethereum/go-ethereum/pull/22092 + +package chain + +import ( + "fmt" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + + "github.com/ethereum/go-ethereum/log" +) + +func TestCounter(t *testing.T) { + chain, newTxPoolHeadChan, txSubmitCh := NewDefaultChain(t) + + // Mark the genesis block as accepted and start the chain + chain.Start() + defer chain.Stop() + + // NOTE: use precompiled `counter.sol` for portability, do not remove the + // following code (for debug purpose) + // counterSrc, err := filepath.Abs(gopath + "/src/github.com/ava-labs/subnet-evm/examples/counter/counter.sol") + // if err != nil { + // t.Fatal(err) + // } + // contracts, err := compiler.CompileSolidity("", counterSrc) + // if err != nil { + // t.Fatal(err) + // } + // contract, _ := contracts[fmt.Sprintf("%s:%s", counterSrc, "Counter")] + // code := common.Hex2Bytes(contract.Code[2:]) + contract := "6080604052348015600f57600080fd5b50602a60008190555060b9806100266000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c80631003e2d214602d575b600080fd5b605660048036036020811015604157600080fd5b8101908080359060200190929190505050606c565b6040518082815260200191505060405180910390f35b60008160005401600081905550600054905091905056fea264697066735822122066dad7255aac3ea41858c2a0fe986696876ac85b2bb4e929d2062504c244054964736f6c63430007060033" + code := common.Hex2Bytes(contract) + + nonce := uint64(0) + tx := types.NewContractCreation(nonce, big.NewInt(0), uint64(gasLimit), gasPrice, code) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), fundedKey.PrivateKey) + if err != nil { + t.Fatal(err) + } + for _, err := range chain.AddRemoteTxs([]*types.Transaction{signedTx}) { + if err != nil { + t.Fatal(err) + } + } + <-txSubmitCh + nonce++ + block, err := chain.GenerateBlock() + if err != nil { + t.Fatal(err) + } + insertAndAccept(t, chain, block) + + <-newTxPoolHeadChan + log.Info("Generated block with new counter contract creation", "blkNumber", block.NumberU64()) + + receipts := chain.GetReceiptsByHash(block.Hash()) + if len(receipts) != 1 { + t.Fatalf("Expected length of receipts to be 1, but found %d", len(receipts)) + } + contractAddr := receipts[0].ContractAddress + + call := common.Hex2Bytes("1003e2d20000000000000000000000000000000000000000000000000000000000000001") + txs := make([]*types.Transaction, 0) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(nonce, contractAddr, big.NewInt(0), uint64(gasLimit), gasPrice, call) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), fundedKey.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs = append(txs, signedTx) + nonce++ + } + for _, err := range chain.AddRemoteTxs(txs) { + if err != nil { + t.Fatal(err) + } + } + <-txSubmitCh + // Generate block + block, err = chain.GenerateBlock() + if err != nil { + t.Fatal(err) + } + insertAndAccept(t, chain, block) + + <-newTxPoolHeadChan + log.Info("Generated block with counter contract interactions", "blkNumber", block.NumberU64()) + receipts = chain.GetReceiptsByHash(block.Hash()) + if len(receipts) != 10 { + t.Fatalf("Expected 10 receipts, but found %d", len(receipts)) + } + + state, err := chain.CurrentState() + if err != nil { + t.Fatal(err) + } + xState := state.GetState(contractAddr, common.BigToHash(big.NewInt(0))) + + log.Info(fmt.Sprintf("genesis balance = %s", state.GetBalance(fundedKey.Address))) + log.Info(fmt.Sprintf("contract balance = %s", state.GetBalance(contractAddr))) + log.Info(fmt.Sprintf("x = %s", xState.String())) + if xState.Big().Cmp(big.NewInt(52)) != 0 { + t.Fatal("incorrect state value") + } +} diff --git a/chain/payment_test.go b/chain/payment_test.go new file mode 100644 index 0000000000..0fc0cfb637 --- /dev/null +++ b/chain/payment_test.go @@ -0,0 +1,75 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package chain + +import ( + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/log" +) + +// TestPayment tests basic payment (balance, not multi-coin) +func TestPayment(t *testing.T) { + chain, newTxPoolHeadChan, txSubmitCh := NewDefaultChain(t) + + // Mark the genesis block as accepted and start the chain + chain.Start() + defer chain.Stop() + + nonce := uint64(0) + numTxs := 10 + txs := make([]*types.Transaction, 0) + for i := 0; i < numTxs; i++ { + tx := types.NewTransaction(nonce, bob.Address, value, uint64(basicTxGasLimit), gasPrice, nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), fundedKey.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs = append(txs, signedTx) + nonce++ + } + for _, err := range chain.AddRemoteTxs(txs) { + if err != nil { + t.Fatalf("Failed to add remote transactions due to %s", err) + } + } + <-txSubmitCh + + block, err := chain.GenerateBlock() + if err != nil { + t.Fatal(err) + } + insertAndAccept(t, chain, block) + <-newTxPoolHeadChan + + if txs := block.Transactions(); len(txs) != numTxs { + t.Fatalf("Expected block to contain %d transactions, but found %d transactions", numTxs, len(txs)) + } + log.Info("Generated block", "BlockHash", block.Hash(), "BlockNumber", block.NumberU64()) + currentBlock := chain.BlockChain().CurrentBlock() + if currentBlock.Hash() != block.Hash() { + t.Fatalf("Found unexpected current block (%s, %d), expected (%s, %d)", currentBlock.Hash(), currentBlock.NumberU64(), block.Hash(), block.NumberU64()) + } + + // state, err := chain.BlockState(currentBlock) + state, err := chain.CurrentState() + if err != nil { + t.Fatal(err) + } + genBalance := state.GetBalance(fundedKey.Address) + bobBalance := state.GetBalance(bob.Address) + expectedBalance := new(big.Int).Mul(value, big.NewInt(int64(numTxs))) + if bobBalance.Cmp(expectedBalance) != 0 { + t.Fatalf("Found incorrect balance %d for bob's address, expected %d", bobBalance, expectedBalance) + } + + totalBalance := bobBalance.Add(bobBalance, genBalance) + totalFees := new(big.Int).Mul(big.NewInt(int64(numTxs*basicTxGasLimit)), gasPrice) + expectedTotalBalance := new(big.Int).Sub(initialBalance, totalFees) + if totalBalance.Cmp(expectedTotalBalance) != 0 { + t.Fatalf("Found incorrect total balance %d, expected total balance of %d", totalBalance, expectedTotalBalance) + } +} diff --git a/chain/subnet_evm.go b/chain/subnet_evm.go new file mode 100644 index 0000000000..5d8a9607cc --- /dev/null +++ b/chain/subnet_evm.go @@ -0,0 +1,194 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package chain + +import ( + "fmt" + "time" + + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/eth" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/node" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" +) + +var BlackholeAddr = common.Address{ + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +} + +type ( + Tx = types.Transaction + Block = types.Block + Hash = common.Hash +) + +type ETHChain struct { + backend *eth.Ethereum +} + +// NewETHChain creates an Ethereum blockchain with the given configs. +func NewETHChain(config *eth.Config, nodecfg *node.Config, chainDB ethdb.Database, settings eth.Settings, lastAcceptedHash common.Hash, clock *mockable.Clock) (*ETHChain, error) { + node, err := node.New(nodecfg) + if err != nil { + return nil, err + } + backend, err := eth.New(node, config, chainDB, settings, lastAcceptedHash, clock) + if err != nil { + return nil, fmt.Errorf("failed to create backend: %w", err) + } + chain := ÐChain{backend: backend} + backend.SetEtherbase(BlackholeAddr) + return chain, nil +} + +func (self *ETHChain) Start() { + self.backend.Start() +} + +func (self *ETHChain) Stop() { + self.backend.Stop() +} + +func (self *ETHChain) GenerateBlock() (*types.Block, error) { + return self.backend.Miner().GenerateBlock() +} + +func (self *ETHChain) BlockChain() *core.BlockChain { + return self.backend.BlockChain() +} + +func (self *ETHChain) APIBackend() *eth.EthAPIBackend { + return self.backend.APIBackend +} + +func (self *ETHChain) PendingSize() int { + pending := self.backend.TxPool().Pending(true) + count := 0 + for _, txs := range pending { + count += len(txs) + } + return count +} + +func (self *ETHChain) AddRemoteTxs(txs []*types.Transaction) []error { + return self.backend.TxPool().AddRemotes(txs) +} + +func (self *ETHChain) AddRemoteTxsSync(txs []*types.Transaction) []error { + return self.backend.TxPool().AddRemotesSync(txs) +} + +func (self *ETHChain) AddLocalTxs(txs []*types.Transaction) []error { + return self.backend.TxPool().AddLocals(txs) +} + +func (self *ETHChain) CurrentBlock() *types.Block { + return self.backend.BlockChain().CurrentBlock() +} + +// Returns a new mutable state based on the current HEAD block. +func (self *ETHChain) CurrentState() (*state.StateDB, error) { + return self.backend.BlockChain().State() +} + +// Returns a new mutable state based on the given block. +func (self *ETHChain) BlockState(block *types.Block) (*state.StateDB, error) { + return self.backend.BlockChain().StateAt(block.Root()) +} + +// Retrives a block from the database by hash. +func (self *ETHChain) GetBlockByHash(hash common.Hash) *types.Block { + return self.backend.BlockChain().GetBlockByHash(hash) +} + +// Retrives a block from the database by number. +func (self *ETHChain) GetBlockByNumber(num uint64) *types.Block { + return self.backend.BlockChain().GetBlockByNumber(num) +} + +// Validate the canonical chain from current block to the genesis. +// This should only be called as a convenience method in tests, not +// in production as it traverses the entire chain. +func (self *ETHChain) ValidateCanonicalChain() error { + return self.backend.BlockChain().ValidateCanonicalChain() +} + +// SetPreference sets the current head block to the one provided as an argument +// regardless of what the chain contents were prior. +func (self *ETHChain) SetPreference(block *types.Block) error { + return self.BlockChain().SetPreference(block) +} + +// Accept sets a minimum height at which no reorg can pass. Additionally, +// this function may trigger a reorg if the block being accepted is not in the +// canonical chain. +func (self *ETHChain) Accept(block *types.Block) error { + return self.BlockChain().Accept(block) +} + +// Reject tells the chain that [block] has been rejected. +func (self *ETHChain) Reject(block *types.Block) error { + return self.BlockChain().Reject(block) +} + +// LastAcceptedBlock returns the last block to be marked as accepted. +func (self *ETHChain) LastAcceptedBlock() *types.Block { + return self.BlockChain().LastAcceptedBlock() +} + +// RemoveRejectedBlocks removes the rejected blocks between heights +// [start] and [end]. +func (self *ETHChain) RemoveRejectedBlocks(start, end uint64) error { + return self.BlockChain().RemoveRejectedBlocks(start, end) +} + +func (self *ETHChain) GetReceiptsByHash(hash common.Hash) types.Receipts { + return self.backend.BlockChain().GetReceiptsByHash(hash) +} + +func (self *ETHChain) GetGenesisBlock() *types.Block { + return self.backend.BlockChain().Genesis() +} + +func (self *ETHChain) InsertBlock(block *types.Block) error { + return self.backend.BlockChain().InsertBlock(block) +} + +func (self *ETHChain) NewRPCHandler(maximumDuration time.Duration) *rpc.Server { + return rpc.NewServer(maximumDuration) +} + +func (self *ETHChain) AttachEthService(handler *rpc.Server, namespaces []string) { + nsmap := make(map[string]bool) + for _, ns := range namespaces { + nsmap[ns] = true + } + for _, api := range self.backend.APIs() { + if nsmap[api.Namespace] { + handler.RegisterName(api.Namespace, api.Service) + } + } +} + +func (self *ETHChain) GetTxSubmitCh() <-chan core.NewTxsEvent { + newTxsChan := make(chan core.NewTxsEvent) + self.backend.TxPool().SubscribeNewTxsEvent(newTxsChan) + return newTxsChan +} + +func (self *ETHChain) GetTxAcceptedSubmitCh() <-chan core.NewTxsEvent { + newTxsChan := make(chan core.NewTxsEvent) + self.backend.BlockChain().SubscribeAcceptedTransactionEvent(newTxsChan) + return newTxsChan +} + +func (self *ETHChain) GetTxPool() *core.TxPool { + return self.backend.TxPool() +} diff --git a/chain/subscribe_accepted_heads_test.go b/chain/subscribe_accepted_heads_test.go new file mode 100644 index 0000000000..d0f7a13ab3 --- /dev/null +++ b/chain/subscribe_accepted_heads_test.go @@ -0,0 +1,109 @@ +package chain + +import ( + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +func TestAcceptedHeadSubscriptions(t *testing.T) { + chain, newTxPoolHeadChan, txSubmitCh := NewDefaultChain(t) + + chain.Start() + defer chain.Stop() + + ethBackend := chain.APIBackend() + + acceptedChainCh := make(chan core.ChainEvent, 1000) + chainCh := make(chan core.ChainEvent, 1000) + ethBackend.SubscribeChainAcceptedEvent(acceptedChainCh) + ethBackend.SubscribeChainEvent(chainCh) + + // *NOTE* this was pre-compiled for the test.. + // src := `pragma solidity >=0.6.0; + // + // contract Counter { + // uint256 x; + // + // constructor() public { + // x = 42; + // } + // + // function add(uint256 y) public returns (uint256) { + // x = x + y; + // return x; + // } + // }` + // contracts, err := compiler.CompileSolidityString("", src) + // checkError(err) + // contract, _ := contracts[fmt.Sprintf("%s:%s", ".", "Counter")] + // _ = contract + + // solc-linux-amd64-v0.6.12+commit.27d51765 --bin -o counter.bin counter.sol + + code := common.Hex2Bytes( + "6080604052348015600f57600080fd5b50602a60008190555060b9806100266000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c80631003e2d214602d575b600080fd5b605660048036036020811015604157600080fd5b8101908080359060200190929190505050606c565b6040518082815260200191505060405180910390f35b60008160005401600081905550600054905091905056fea26469706673582212200dc7c76677426e8c621c6839348a7c8d60787c546a9b9c7fc91efa57f71d46a364736f6c634300060c0033", + // contract.Code[2:], + ) + tx := types.NewContractCreation(uint64(0), big.NewInt(0), uint64(gasLimit), gasPrice, code) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), fundedKey.PrivateKey) + if err != nil { + t.Fatal(err) + } + for _, err := range chain.AddRemoteTxs([]*types.Transaction{signedTx}) { + if err != nil { + t.Fatal(err) + } + } + <-txSubmitCh + + block, err := chain.GenerateBlock() + if err != nil { + t.Fatal(err) + } + insertAndSetPreference(t, chain, block) + <-newTxPoolHeadChan + log.Info("Generated block with new counter contract creation", "blkNumber", block.NumberU64()) + + if block.NumberU64() != uint64(1) { + t.Fatal(err) + } + + select { + case fb := <-chainCh: + if fb.Block.NumberU64() != 1 { + t.Fatalf("received block with unexpected block number %d via chain channel", fb.Block.NumberU64()) + } + if fb.Block.Hash() != block.Hash() { + t.Fatalf("Received block with unexpected hash %s via chain channel", fb.Block.Hash().String()) + } + default: + t.Fatal("failed to received block via chain channel") + } + + select { + case <-acceptedChainCh: + t.Fatalf("Received unexpected chain accept event before accepting block") + default: + } + + if err := chain.Accept(block); err != nil { + t.Fatal(err) + } + + select { + case fb := <-acceptedChainCh: + if fb.Block.NumberU64() != 1 { + t.Fatalf("received block with unexpected block number %d on accepted block channel", fb.Block.NumberU64()) + } + if fb.Block.Hash() != block.Hash() { + t.Fatalf("Received block with unexpected hash %s via accepted block channel", fb.Block.Hash().String()) + } + default: + t.Fatal("failed to received block via accepted block channel") + } +} diff --git a/chain/subscribe_block_logs_test.go b/chain/subscribe_block_logs_test.go new file mode 100644 index 0000000000..6ab5de7ab2 --- /dev/null +++ b/chain/subscribe_block_logs_test.go @@ -0,0 +1,293 @@ +package chain + +import ( + "context" + "math/big" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/eth/filters" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +func TestBlockLogsAllowUnfinalized(t *testing.T) { + chain, newTxPoolHeadChan, txSubmitCh := NewDefaultChain(t) + + chain.Start() + defer chain.Stop() + + acceptedLogsCh := make(chan []*types.Log, 1000) + ethBackend := chain.APIBackend() + ethBackend.SubscribeAcceptedLogsEvent(acceptedLogsCh) + + api := filters.NewPublicFilterAPI(ethBackend, true, 5*time.Minute) + + // *NOTE* this was pre-compiled for the test.. + /* + pragma solidity >=0.6.0; + + contract Counter { + uint256 x; + + event CounterEmit(uint256 indexed oldval, uint256 indexed newval); + + constructor() public { + emit CounterEmit(0, 42); + x = 42; + } + + function add(uint256 y) public returns (uint256) { + x = x + y; + emit CounterEmit(y, x); + return x; + } + } + */ + // contracts, err := compiler.CompileSolidityString("", src) + // checkError(err) + // contract, _ := contracts[fmt.Sprintf("%s:%s", ".", "Counter")] + // _ = contract + + // solc-linux-amd64-v0.6.12+commit.27d51765 --bin -o counter.bin counter.sol + + code := common.Hex2Bytes( + "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", + // contract.Code[2:], + ) + + tx := types.NewContractCreation(uint64(0), big.NewInt(0), uint64(gasLimit), gasPrice, code) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), fundedKey.PrivateKey) + if err != nil { + t.Fatal(err) + } + for _, err := range chain.AddRemoteTxs([]*types.Transaction{signedTx}) { + if err != nil { + t.Fatal(err) + } + } + <-txSubmitCh + block, err := chain.GenerateBlock() + if err != nil { + t.Fatal(err) + } + insertAndSetPreference(t, chain, block) + + <-newTxPoolHeadChan + + if block.NumberU64() != uint64(1) { + t.Fatalf("Expected to create a new block with height 1, but found %d", block.NumberU64()) + } + + ctx := context.Background() + fc := filters.FilterCriteria{ + FromBlock: big.NewInt(1), + ToBlock: big.NewInt(1), + } + + fid, err := api.NewFilter(fc) + if err != nil { + t.Fatalf("Failed to create NewFilter due to %s", err) + } + + chain.BlockChain().GetVMConfig().AllowUnfinalizedQueries = true + logs, err := api.GetLogs(ctx, fc) + if err != nil { + t.Fatalf("GetLogs failed due to %s", err) + } + if len(logs) != 1 { + t.Fatalf("Expected GetLogs to return 1 log, but found %d", len(logs)) + } + if logs[0].BlockNumber != 1 { + t.Fatalf("Expected GetLogs to return 1 log with block number 1, but found block number %d", logs[0].BlockNumber) + } + + logs, err = api.GetFilterLogs(ctx, fid) + if err != nil { + t.Fatalf("GetFilter failed due to %s", err) + } + if len(logs) != 1 { + t.Fatalf("Expected GetFilterLogs to return 1 log, but found %d", len(logs)) + } + if logs[0].BlockNumber != 1 { + t.Fatalf("Expected GetFilterLogs to return 1 log with BlockNumber 1, but found BlockNumber %d", logs[0].BlockNumber) + } + + // Fetching blocks from an unfinalized height without specifying a to height + // will not yield any logs because the to block is populated using the last + // accepted block. + fc2 := filters.FilterCriteria{ + FromBlock: big.NewInt(1), + } + + fid2, err := api.NewFilter(fc2) + if err != nil { + t.Fatalf("Failed to create NewFilter due to %s", err) + } + + logs, err = api.GetLogs(ctx, fc2) + if err == nil || err.Error() != "begin block 1 is greater than end block 0" { + t.Fatalf("Expected GetLogs to error about invalid range, but found error %s", err) + } + if len(logs) != 0 { + t.Fatalf("Expected GetLogs to return 0 log, but found %d", len(logs)) + } + + logs, err = api.GetFilterLogs(ctx, fid2) + if err == nil || err.Error() != "begin block 1 is greater than end block 0" { + t.Fatalf("Expected GetLogs to error about invalid range, but found error %s", err) + } + if len(logs) != 0 { + t.Fatalf("Expected GetFilterLogs to return 0 log, but found %d", len(logs)) + } + + chain.BlockChain().GetVMConfig().AllowUnfinalizedQueries = false + logs, err = api.GetLogs(ctx, fc) + if logs != nil { + t.Fatalf("Expected logs to be empty, but found %d logs", len(logs)) + } + if err == nil || err.Error() != "requested from block 1 after last accepted block 0" { + t.Fatalf("Expected GetLogs to error due to requesting above last accepted block, but found error %s", err) + } + + logs, err = api.GetFilterLogs(ctx, fid) + if logs != nil { + t.Fatalf("Expected GetFilterLogs to return empty logs, but found %d logs", len(logs)) + } + if err == nil || err.Error() != "requested from block 1 after last accepted block 0" { + t.Fatalf("Expected GetLogs to fail due to requesting block above last accepted block, but found error %s", err) + } + + logs, err = api.GetLogs(ctx, fc2) + if logs != nil { + t.Fatalf("Expected logs to be empty, but found %d logs", len(logs)) + } + if err == nil || err.Error() != "requested from block 1 after last accepted block 0" { + t.Fatalf("Expected GetLogs to error due to requesting above last accepted block, but found error %s", err) + } + + logs, err = api.GetFilterLogs(ctx, fid2) + if logs != nil { + t.Fatalf("Expected GetFilterLogs to return empty logs, but found %d logs", len(logs)) + } + if err == nil || err.Error() != "requested from block 1 after last accepted block 0" { + t.Fatalf("Expected GetLogs to fail due to requesting block above last accepted block, but found error %s", err) + } + + fc3 := filters.FilterCriteria{ + FromBlock: big.NewInt(0), + ToBlock: big.NewInt(1), + } + logs, err = api.GetLogs(ctx, fc3) + if logs != nil { + t.Fatalf("Expected GetLogs to return empty, but found %d logs", len(logs)) + } + if err == nil || err.Error() != "requested to block 1 after last accepted block 0" { + t.Fatalf("Expected GetLogs to error due to requesting block above last accepted block, but found error %s", err) + } + + fid3, err := api.NewFilter(fc3) + if err != nil { + t.Fatalf("NewFilter failed due to %s", err) + } + logs, err = api.GetFilterLogs(ctx, fid3) + if logs != nil { + t.Fatalf("Expected GetFilterLogs to return empty logs but found %d logs", len(logs)) + } + if err == nil || err.Error() != "requested to block 1 after last accepted block 0" { + t.Fatalf("Expected GetFilterLogs to fail due to requesting block above last accepted block, but found error %s", err) + } + + // Unless otherwise specified, getting the latest will still return the last + // accepted logs even when AllowUnfinalizedQueries = true. + fc4 := filters.FilterCriteria{} + logs, err = api.GetLogs(ctx, fc4) + if err != nil { + t.Fatalf("Failed to GetLogs for FilterCriteria with empty from and to block due to %s", err) + } + if len(logs) != 0 { + t.Fatalf("Expected GetLogs to return 0 log, but found %d", len(logs)) + } + fid4, err := api.NewFilter(fc4) + if err != nil { + t.Fatalf("NewFilter failed due to %s", err) + } + logs, err = api.GetFilterLogs(ctx, fid4) + if err != nil { + t.Fatalf("GetFilterLogs failed due to %s", err) + } + if len(logs) != 0 { + t.Fatalf("Expected GetFilterLogs to return 0 log, but found %d", len(logs)) + } + + select { + case <-acceptedLogsCh: + t.Fatal("Received accepted logs event before Accepting block") + default: + } + + if err := chain.Accept(block); err != nil { + t.Fatal(err) + } + + chain.BlockChain().GetVMConfig().AllowUnfinalizedQueries = false + logs, err = api.GetLogs(ctx, fc) + if err != nil { + t.Fatalf("GetLogs failed due to %s", err) + } + if len(logs) != 1 { + t.Fatalf("Expected GetLogs to return 1 log, but found %d", len(logs)) + } + if logs[0].BlockNumber != 1 { + t.Fatalf("Expected single log to have block number 1, but found %d", logs[0].BlockNumber) + } + + logs, err = api.GetFilterLogs(ctx, fid) + if err != nil { + t.Fatalf("GetFilterLogs failed due to %s", err) + } + if len(logs) != 1 { + t.Fatalf("Expected GetFilterLogs to return 1 log, but found %d", len(logs)) + } + if logs[0].BlockNumber != 1 { + t.Fatalf("Expected GetFilterLogs to return 1 log with BlocKNumber 1, but found BlockNumber %d", logs[0].BlockNumber) + } + + logs, err = api.GetLogs(ctx, fc4) + if err != nil { + t.Fatalf("Failed to GetLogs for FilterCriteria with empty from and to block due to %s", err) + } + if len(logs) != 1 { + t.Fatalf("Expected GetLogs to return 1 log, but found %d", len(logs)) + } + if logs[0].BlockNumber != 1 { + t.Fatalf("Expected single log to have block number 1, but found %d", logs[0].BlockNumber) + } + fid4, err = api.NewFilter(fc4) + if err != nil { + t.Fatalf("NewFilter failed due to %s", err) + } + logs, err = api.GetFilterLogs(ctx, fid4) + if err != nil { + t.Fatalf("GetFilterLogs failed due to %s", err) + } + if len(logs) != 1 { + t.Fatalf("Expected GetFilterLogs to return 1 log, but found %d", len(logs)) + } + if logs[0].BlockNumber != 1 { + t.Fatalf("Expected GetFilterLogs to return 1 log with BlockNumber 1, but found BlockNumber %d", logs[0].BlockNumber) + } + + select { + case acceptedLogs := <-acceptedLogsCh: + if len(acceptedLogs) != 1 { + t.Fatalf("Expected accepted logs channel to return 1 log, but found %d", len(acceptedLogs)) + } + if acceptedLogs[0].BlockNumber != 1 { + t.Fatalf("Expected accepted logs channel to return 1 log with BlockNumber 1, but found BlockNumber %d", acceptedLogs[0].BlockNumber) + } + default: + t.Fatal("Failed to receive logs via accepted logs channel") + } +} diff --git a/chain/subscribe_transactions_test.go b/chain/subscribe_transactions_test.go new file mode 100644 index 0000000000..e5a8455873 --- /dev/null +++ b/chain/subscribe_transactions_test.go @@ -0,0 +1,129 @@ +package chain + +import ( + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/eth/filters" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +func TestSubscribeTransactions(t *testing.T) { + chain, newTxPoolHeadChan, txSubmitCh := NewDefaultChain(t) + + ethBackend := chain.APIBackend() + eventSystem := filters.NewEventSystem(ethBackend, true) + + acceptedTxsEventsChannel := make(chan []common.Hash) + acceptedTxsEvents := eventSystem.SubscribeAcceptedTxs(acceptedTxsEventsChannel) + + pendingTxsEventsChannel := make(chan []common.Hash) + pendingTxsEvents := eventSystem.SubscribePendingTxs(pendingTxsEventsChannel) + + chain.Start() + defer chain.Stop() + + // *NOTE* this was pre-compiled for the test.. + /* + pragma solidity >=0.6.0; + + contract Counter { + uint256 x; + + event CounterEmit(uint256 indexed oldval, uint256 indexed newval); + + constructor() public { + emit CounterEmit(0, 42); + x = 42; + } + + function add(uint256 y) public returns (uint256) { + x = x + y; + emit CounterEmit(y, x); + return x; + } + } + */ + // contracts, err := compiler.CompileSolidityString("", src) + // checkError(err) + // contract, _ := contracts[fmt.Sprintf("%s:%s", ".", "Counter")] + // _ = contract + + // solc-linux-amd64-v0.6.12+commit.27d51765 --bin -o counter.bin counter.sol + + code := common.Hex2Bytes( + "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", + // contract.Code[2:], + ) + + tx := types.NewContractCreation(uint64(0), big.NewInt(0), uint64(gasLimit), gasPrice, code) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), fundedKey.PrivateKey) + if err != nil { + t.Fatal(err) + } + for _, err := range chain.AddRemoteTxs([]*types.Transaction{signedTx}) { + if err != nil { + t.Fatal(err) + } + } + txs := <-txSubmitCh + block, err := chain.GenerateBlock() + if err != nil { + t.Fatal(err) + } + insertAndSetPreference(t, chain, block) + + <-newTxPoolHeadChan + + select { + case <-acceptedTxsEventsChannel: + t.Fatal("Unexpected accepted tx head") + default: + } + + pendingTx := <-pendingTxsEventsChannel + if len(pendingTx) != 1 { + t.Fatal("Expected a new pending tx") + } + if pendingTx[0] != signedTx.Hash() { + t.Fatalf("Expected a new pending tx for signed hash %s", signedTx.Hash().String()) + } + + if err := chain.Accept(block); err != nil { + t.Fatal(err) + } + + pendingTxsEventHash := <-pendingTxsEventsChannel + + acceptedTxsEventHash := <-acceptedTxsEventsChannel + + pendingTxsEvents.Unsubscribe() + acceptedTxsEvents.Unsubscribe() + + if block.NumberU64() != uint64(1) { + t.Fatalf("Expected to create a new block with height 1, but found %d", block.NumberU64()) + } + + if len(pendingTxsEventHash) != 1 { + t.Fatal("Expected a new pending tx") + } + if pendingTxsEventHash[0] != signedTx.Hash() { + t.Fatalf("Expected a new pending tx for signed hash %s", signedTx.Hash().String()) + } + + if len(acceptedTxsEventHash) != 1 { + t.Fatal("Expected a new accepted tx") + } + if acceptedTxsEventHash[0] != signedTx.Hash() { + t.Fatalf("Expected a new accepted tx for signed hash %s", signedTx.Hash().String()) + } + + if len(txs.Txs) != 1 { + t.Fatal("Expected to create a new tx") + } + if txs.Txs[0].Hash() != signedTx.Hash() { + t.Fatalf("Expected subscription for signed hash %s", signedTx.Hash().String()) + } +} diff --git a/chain/test_chain.go b/chain/test_chain.go new file mode 100644 index 0000000000..33e8080a13 --- /dev/null +++ b/chain/test_chain.go @@ -0,0 +1,122 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package chain + +import ( + "crypto/rand" + "math/big" + "testing" + + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/subnet-evm/accounts/keystore" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/eth" + "github.com/ava-labs/subnet-evm/eth/ethconfig" + "github.com/ava-labs/subnet-evm/node" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +var ( + basicTxGasLimit = 21000 + fundedKey, bob, alice *keystore.Key + initialBalance = big.NewInt(1000000000000000000) + chainID = big.NewInt(1) + value = big.NewInt(1000000000000) + gasLimit = 1000000 + gasPrice = big.NewInt(225_000_000_000) +) + +func init() { + genKey, err := keystore.NewKey(rand.Reader) + if err != nil { + panic(err) + } + fundedKey = genKey + genKey, err = keystore.NewKey(rand.Reader) + if err != nil { + panic(err) + } + bob = genKey + genKey, err = keystore.NewKey(rand.Reader) + if err != nil { + panic(err) + } + alice = genKey +} + +func NewDefaultChain(t *testing.T) (*ETHChain, chan core.NewTxPoolHeadEvent, <-chan core.NewTxsEvent) { + // configure the chain + config := ethconfig.NewDefaultConfig() + chainConfig := ¶ms.ChainConfig{ + ChainID: chainID, + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP150Hash: common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(0), + IstanbulBlock: big.NewInt(0), + } + + config.Genesis = &core.Genesis{ + Config: chainConfig, + Nonce: 0, + Number: 0, + ExtraData: hexutil.MustDecode("0x00"), + GasLimit: 100000000, + Difficulty: big.NewInt(0), + Alloc: core.GenesisAlloc{fundedKey.Address: core.GenesisAccount{Balance: initialBalance}}, + } + + var ( + chain *ETHChain + err error + ) + chain, err = NewETHChain( + &config, + &node.Config{}, + rawdb.NewMemoryDatabase(), + eth.DefaultSettings, + common.Hash{}, + &mockable.Clock{}, + ) + if err != nil { + t.Fatal(err) + } + + newTxPoolHeadChan := make(chan core.NewTxPoolHeadEvent, 1) + chain.GetTxPool().SubscribeNewHeadEvent(newTxPoolHeadChan) + + txSubmitCh := chain.GetTxSubmitCh() + return chain, newTxPoolHeadChan, txSubmitCh +} + +// insertAndAccept inserts [block] into [chain], sets the chains preference to it +// and then Accepts it. +func insertAndAccept(t *testing.T, chain *ETHChain, block *types.Block) { + if err := chain.InsertBlock(block); err != nil { + t.Fatal(err) + } + if err := chain.SetPreference(block); err != nil { + t.Fatal(err) + } + if err := chain.Accept(block); err != nil { + t.Fatal(err) + } +} + +func insertAndSetPreference(t *testing.T, chain *ETHChain, block *types.Block) { + if err := chain.InsertBlock(block); err != nil { + t.Fatal(err) + } + if err := chain.SetPreference(block); err != nil { + t.Fatal(err) + } +} diff --git a/cmd/abigen/main.go b/cmd/abigen/main.go new file mode 100644 index 0000000000..4fd065b466 --- /dev/null +++ b/cmd/abigen/main.go @@ -0,0 +1,289 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package main + +import ( + "encoding/json" + "fmt" + "io/ioutil" + "os" + "path/filepath" + "regexp" + "strings" + + "github.com/ava-labs/subnet-evm/accounts/abi" + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/internal/flags" + "github.com/ethereum/go-ethereum/cmd/utils" + "github.com/ethereum/go-ethereum/common/compiler" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "gopkg.in/urfave/cli.v1" +) + +var ( + // Git SHA1 commit hash of the release (set via linker flags) + gitCommit = "" + gitDate = "" + + app *cli.App + + // Flags needed by abigen + abiFlag = cli.StringFlag{ + Name: "abi", + Usage: "Path to the Ethereum contract ABI json to bind, - for STDIN", + } + binFlag = cli.StringFlag{ + Name: "bin", + Usage: "Path to the Ethereum contract bytecode (generate deploy method)", + } + typeFlag = cli.StringFlag{ + Name: "type", + Usage: "Struct name for the binding (default = package name)", + } + jsonFlag = cli.StringFlag{ + Name: "combined-json", + Usage: "Path to the combined-json file generated by compiler", + } + solFlag = cli.StringFlag{ + Name: "sol", + Usage: "Path to the Ethereum contract Solidity source to build and bind", + } + solcFlag = cli.StringFlag{ + Name: "solc", + Usage: "Solidity compiler to use if source builds are requested", + Value: "solc", + } + vyFlag = cli.StringFlag{ + Name: "vy", + Usage: "Path to the Ethereum contract Vyper source to build and bind", + } + vyperFlag = cli.StringFlag{ + Name: "vyper", + Usage: "Vyper compiler to use if source builds are requested", + Value: "vyper", + } + excFlag = cli.StringFlag{ + Name: "exc", + Usage: "Comma separated types to exclude from binding", + } + pkgFlag = cli.StringFlag{ + Name: "pkg", + Usage: "Package name to generate the binding into", + } + outFlag = cli.StringFlag{ + Name: "out", + Usage: "Output file for the generated binding (default = stdout)", + } + langFlag = cli.StringFlag{ + Name: "lang", + Usage: "Destination language for the bindings (go, java, objc)", + Value: "go", + } + aliasFlag = cli.StringFlag{ + Name: "alias", + Usage: "Comma separated aliases for function and event renaming, e.g. original1=alias1, original2=alias2", + } +) + +func init() { + app = flags.NewApp(gitCommit, gitDate, "ethereum checkpoint helper tool") + app.Flags = []cli.Flag{ + abiFlag, + binFlag, + typeFlag, + jsonFlag, + solFlag, + solcFlag, + vyFlag, + vyperFlag, + excFlag, + pkgFlag, + outFlag, + langFlag, + aliasFlag, + } + app.Action = utils.MigrateFlags(abigen) + cli.CommandHelpTemplate = flags.OriginCommandHelpTemplate +} + +func abigen(c *cli.Context) error { + utils.CheckExclusive(c, abiFlag, jsonFlag, solFlag, vyFlag) // Only one source can be selected. + if c.GlobalString(pkgFlag.Name) == "" { + utils.Fatalf("No destination package specified (--pkg)") + } + var lang bind.Lang + switch c.GlobalString(langFlag.Name) { + case "go": + lang = bind.LangGo + case "java": + lang = bind.LangJava + case "objc": + lang = bind.LangObjC + utils.Fatalf("Objc binding generation is uncompleted") + default: + utils.Fatalf("Unsupported destination language \"%s\" (--lang)", c.GlobalString(langFlag.Name)) + } + // If the entire solidity code was specified, build and bind based on that + var ( + abis []string + bins []string + types []string + sigs []map[string]string + libs = make(map[string]string) + aliases = make(map[string]string) + ) + if c.GlobalString(abiFlag.Name) != "" { + // Load up the ABI, optional bytecode and type name from the parameters + var ( + abi []byte + err error + ) + input := c.GlobalString(abiFlag.Name) + if input == "-" { + abi, err = ioutil.ReadAll(os.Stdin) + } else { + abi, err = ioutil.ReadFile(input) + } + if err != nil { + utils.Fatalf("Failed to read input ABI: %v", err) + } + abis = append(abis, string(abi)) + + var bin []byte + if binFile := c.GlobalString(binFlag.Name); binFile != "" { + if bin, err = ioutil.ReadFile(binFile); err != nil { + utils.Fatalf("Failed to read input bytecode: %v", err) + } + if strings.Contains(string(bin), "//") { + utils.Fatalf("Contract has additional library references, please use other mode(e.g. --combined-json) to catch library infos") + } + } + bins = append(bins, string(bin)) + + kind := c.GlobalString(typeFlag.Name) + if kind == "" { + kind = c.GlobalString(pkgFlag.Name) + } + types = append(types, kind) + } else { + // Generate the list of types to exclude from binding + exclude := make(map[string]bool) + for _, kind := range strings.Split(c.GlobalString(excFlag.Name), ",") { + exclude[strings.ToLower(kind)] = true + } + var err error + var contracts map[string]*compiler.Contract + + switch { + case c.GlobalIsSet(solFlag.Name): + contracts, err = compiler.CompileSolidity(c.GlobalString(solcFlag.Name), c.GlobalString(solFlag.Name)) + if err != nil { + utils.Fatalf("Failed to build Solidity contract: %v", err) + } + case c.GlobalIsSet(vyFlag.Name): + output, err := compiler.CompileVyper(c.GlobalString(vyperFlag.Name), c.GlobalString(vyFlag.Name)) + if err != nil { + utils.Fatalf("Failed to build Vyper contract: %v", err) + } + contracts = make(map[string]*compiler.Contract) + for n, contract := range output { + name := n + // Sanitize the combined json names to match the + // format expected by solidity. + if !strings.Contains(n, ":") { + // Remove extra path components + name = abi.ToCamelCase(strings.TrimSuffix(filepath.Base(name), ".vy")) + } + contracts[name] = contract + } + + case c.GlobalIsSet(jsonFlag.Name): + jsonOutput, err := ioutil.ReadFile(c.GlobalString(jsonFlag.Name)) + if err != nil { + utils.Fatalf("Failed to read combined-json from compiler: %v", err) + } + contracts, err = compiler.ParseCombinedJSON(jsonOutput, "", "", "", "") + if err != nil { + utils.Fatalf("Failed to read contract information from json output: %v", err) + } + } + // Gather all non-excluded contract for binding + for name, contract := range contracts { + if exclude[strings.ToLower(name)] { + continue + } + abi, err := json.Marshal(contract.Info.AbiDefinition) // Flatten the compiler parse + if err != nil { + utils.Fatalf("Failed to parse ABIs from compiler output: %v", err) + } + abis = append(abis, string(abi)) + bins = append(bins, contract.Code) + sigs = append(sigs, contract.Hashes) + nameParts := strings.Split(name, ":") + types = append(types, nameParts[len(nameParts)-1]) + + libPattern := crypto.Keccak256Hash([]byte(name)).String()[2:36] + libs[libPattern] = nameParts[len(nameParts)-1] + } + } + // Extract all aliases from the flags + if c.GlobalIsSet(aliasFlag.Name) { + // We support multi-versions for aliasing + // e.g. + // foo=bar,foo2=bar2 + // foo:bar,foo2:bar2 + re := regexp.MustCompile(`(?:(\w+)[:=](\w+))`) + submatches := re.FindAllStringSubmatch(c.GlobalString(aliasFlag.Name), -1) + for _, match := range submatches { + aliases[match[1]] = match[2] + } + } + // Generate the contract binding + code, err := bind.Bind(types, abis, bins, sigs, c.GlobalString(pkgFlag.Name), lang, libs, aliases) + if err != nil { + utils.Fatalf("Failed to generate ABI binding: %v", err) + } + // Either flush it out to a file or display on the standard output + if !c.GlobalIsSet(outFlag.Name) { + fmt.Printf("%s\n", code) + return nil + } + if err := ioutil.WriteFile(c.GlobalString(outFlag.Name), []byte(code), 0600); err != nil { + utils.Fatalf("Failed to write ABI binding: %v", err) + } + return nil +} + +func main() { + log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true)))) + + if err := app.Run(os.Args); err != nil { + fmt.Fprintln(os.Stderr, err) + os.Exit(1) + } +} diff --git a/consensus/consensus.go b/consensus/consensus.go new file mode 100644 index 0000000000..360efcbbbf --- /dev/null +++ b/consensus/consensus.go @@ -0,0 +1,116 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package consensus implements different Ethereum consensus engines. +package consensus + +import ( + "math/big" + + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" +) + +// ChainHeaderReader defines a small collection of methods needed to access the local +// blockchain during header verification. +type ChainHeaderReader interface { + // Config retrieves the blockchain's chain configuration. + Config() *params.ChainConfig + + // CurrentHeader retrieves the current header from the local chain. + CurrentHeader() *types.Header + + // GetHeader retrieves a block header from the database by hash and number. + GetHeader(hash common.Hash, number uint64) *types.Header + + // GetHeaderByNumber retrieves a block header from the database by number. + GetHeaderByNumber(number uint64) *types.Header + + // GetHeaderByHash retrieves a block header from the database by its hash. + GetHeaderByHash(hash common.Hash) *types.Header +} + +// ChainReader defines a small collection of methods needed to access the local +// blockchain during header and/or uncle verification. +type ChainReader interface { + ChainHeaderReader + + // GetBlock retrieves a block from the database by hash and number. + GetBlock(hash common.Hash, number uint64) *types.Block +} + +// Engine is an algorithm agnostic consensus engine. +type Engine interface { + // Author retrieves the Ethereum address of the account that minted the given + // block, which may be different from the header's coinbase if a consensus + // engine is based on signatures. + Author(header *types.Header) (common.Address, error) + + // VerifyHeader checks whether a header conforms to the consensus rules of a + // given engine. Verifying the seal may be done optionally here, or explicitly + // via the VerifySeal method. + // + // NOTE: VerifyHeader does not validate the correctness of fields that rely + // on the contents of the block (as opposed to the current and/or parent + // header). + VerifyHeader(chain ChainHeaderReader, header *types.Header) error + + // VerifyUncles verifies that the given block's uncles conform to the consensus + // rules of a given engine. + VerifyUncles(chain ChainReader, block *types.Block) error + + // VerifySeal checks whether the crypto seal on a header is valid according to + // the consensus rules of the given engine. + VerifySeal(chain ChainHeaderReader, header *types.Header) error + + // Prepare initializes the consensus fields of a block header according to the + // rules of a particular engine. The changes are executed inline. + Prepare(chain ChainHeaderReader, header *types.Header) error + + // Finalize runs any post-transaction state modifications (e.g. block rewards) + // but does not assemble the block. + // + // Note: The block header and state database might be updated to reflect any + // consensus rules that happen at finalization (e.g. block rewards). + Finalize(chain ChainHeaderReader, block *types.Block, parent *types.Header, state *state.StateDB, receipts []*types.Receipt) error + + // FinalizeAndAssemble runs any post-transaction state modifications (e.g. block + // rewards) and assembles the final block. + // + // Note: The block header and state database might be updated to reflect any + // consensus rules that happen at finalization (e.g. block rewards). + FinalizeAndAssemble(chain ChainHeaderReader, header *types.Header, parent *types.Header, state *state.StateDB, txs []*types.Transaction, + uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) + + // CalcDifficulty is the difficulty adjustment algorithm. It returns the difficulty + // that a new block should have. + CalcDifficulty(chain ChainHeaderReader, time uint64, parent *types.Header) *big.Int + + // Close terminates any background threads maintained by the consensus engine. + Close() error +} diff --git a/consensus/dummy/consensus.go b/consensus/dummy/consensus.go new file mode 100644 index 0000000000..99be89c2d8 --- /dev/null +++ b/consensus/dummy/consensus.go @@ -0,0 +1,323 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package dummy + +import ( + "bytes" + "errors" + "fmt" + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" +) + +var ( + allowedFutureBlockTime = 10 * time.Second // Max time from current time allowed for blocks, before they're considered future blocks + + errInvalidBlockTime = errors.New("timestamp less than parent's") + errUnclesUnsupported = errors.New("uncles unsupported") + errBlockGasCostNil = errors.New("block gas cost is nil") + errBlockGasCostTooLarge = errors.New("block gas cost is not uint64") + errBaseFeeNil = errors.New("base fee is nil") +) + +type DummyEngine struct { + ethFaker bool +} + +func NewEngine() *DummyEngine { + return &DummyEngine{} +} + +func NewETHFaker() *DummyEngine { + return &DummyEngine{ + ethFaker: true, + } +} + +func (self *DummyEngine) verifyHeaderGasFields(config *params.ChainConfig, header *types.Header, parent *types.Header) error { + timestamp := new(big.Int).SetUint64(header.Time) + + // Verify that the gas limit is <= 2^63-1 + cap := uint64(0x7fffffffffffffff) + if header.GasLimit > cap { + return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, cap) + } + // Verify that the gasUsed is <= gasLimit + if header.GasUsed > header.GasLimit { + return fmt.Errorf("invalid gasUsed: have %d, gasLimit %d", header.GasUsed, header.GasLimit) + } + if config.IsSubnetEVM(timestamp) { + expectedGasLimit := config.GetFeeConfig().GasLimit.Uint64() + if header.GasLimit != expectedGasLimit { + return fmt.Errorf("expected gas limit to be %d, but found %d", expectedGasLimit, header.GasLimit) + } + } else { + // Verify that the gas limit remains within allowed bounds + diff := int64(parent.GasLimit) - int64(header.GasLimit) + if diff < 0 { + diff *= -1 + } + limit := parent.GasLimit / params.GasLimitBoundDivisor + + if uint64(diff) >= limit || header.GasLimit < params.MinGasLimit { + return fmt.Errorf("invalid gas limit: have %d, want %d += %d", header.GasLimit, parent.GasLimit, limit) + } + // Verify BaseFee is not present before Subnet EVM + if header.BaseFee != nil { + return fmt.Errorf("invalid baseFee before fork: have %d, want ", header.BaseFee) + } + if header.BlockGasCost != nil { + return fmt.Errorf("invalid blockGasCost before fork: have %d, want ", header.BlockGasCost) + } + return nil + } + + // Verify baseFee and rollupWindow encoding as part of header verification + // starting in Subnet EVM + expectedRollupWindowBytes, expectedBaseFee, err := CalcBaseFee(config, parent, header.Time) + if err != nil { + return fmt.Errorf("failed to calculate base fee: %w", err) + } + if !bytes.Equal(expectedRollupWindowBytes, header.Extra) { + return fmt.Errorf("expected rollup window bytes: %x, found %x", expectedRollupWindowBytes, header.Extra) + } + if header.BaseFee == nil { + return errors.New("expected baseFee to be non-nil") + } + if bfLen := header.BaseFee.BitLen(); bfLen > 256 { + return fmt.Errorf("too large base fee: bitlen %d", bfLen) + } + if header.BaseFee.Cmp(expectedBaseFee) != 0 { + return fmt.Errorf("expected base fee (%d), found (%d)", expectedBaseFee, header.BaseFee) + } + + // Enforce BlockGasCost constraints + blockGasCostStep := config.GetFeeConfig().BlockGasCostStep + targetBlockRate := config.GetFeeConfig().TargetBlockRate + minBlockGasCost := config.GetFeeConfig().MinBlockGasCost + maxBlockGasCost := config.GetFeeConfig().MaxBlockGasCost + + expectedBlockGasCost := calcBlockGasCost( + targetBlockRate, + minBlockGasCost, + maxBlockGasCost, + blockGasCostStep, + parent.BlockGasCost, + parent.Time, header.Time, + ) + if header.BlockGasCost == nil { + return errBlockGasCostNil + } + if !header.BlockGasCost.IsUint64() { + return errBlockGasCostTooLarge + } + if header.BlockGasCost.Cmp(expectedBlockGasCost) != 0 { + return fmt.Errorf("invalid block gas cost: have %d, want %d", header.BlockGasCost, expectedBlockGasCost) + } + return nil +} + +// modified from consensus.go +func (self *DummyEngine) verifyHeader(chain consensus.ChainHeaderReader, header *types.Header, parent *types.Header, uncle bool) error { + var ( + config = chain.Config() + timestamp = new(big.Int).SetUint64(header.Time) + ) + // Ensure that we do not verify an uncle + if uncle { + return errUnclesUnsupported + } + // Ensure that the header's extra-data section is of a reasonable size + if !config.IsSubnetEVM(timestamp) { + if uint64(len(header.Extra)) > params.MaximumExtraDataSize { + return fmt.Errorf("extra-data too long: %d > %d", len(header.Extra), params.MaximumExtraDataSize) + } + } else { + expectedExtraDataSize := params.ExtraDataSize + if len(header.Extra) != expectedExtraDataSize { + return fmt.Errorf("expected extra-data field to be: %d, but found %d", expectedExtraDataSize, len(header.Extra)) + } + } + // Ensure gas-related header fields are correct + if err := self.verifyHeaderGasFields(config, header, parent); err != nil { + return err + } + // Verify the header's timestamp + if header.Time > uint64(time.Now().Add(allowedFutureBlockTime).Unix()) { + return consensus.ErrFutureBlock + } + // Verify the header's timestamp is not earlier than parent's + // it does include equality(==), so multiple blocks per second is ok + if header.Time < parent.Time { + return errInvalidBlockTime + } + // Verify that the block number is parent's +1 + if diff := new(big.Int).Sub(header.Number, parent.Number); diff.Cmp(big.NewInt(1)) != 0 { + return consensus.ErrInvalidNumber + } + // Verify the engine specific seal securing the block + return self.VerifySeal(chain, header) +} + +func (self *DummyEngine) Author(header *types.Header) (common.Address, error) { + return header.Coinbase, nil +} + +func (self *DummyEngine) VerifyHeader(chain consensus.ChainHeaderReader, header *types.Header) error { + // Short circuit if the header is known, or it's parent not + number := header.Number.Uint64() + if chain.GetHeader(header.Hash(), number) != nil { + return nil + } + parent := chain.GetHeader(header.ParentHash, number-1) + if parent == nil { + return consensus.ErrUnknownAncestor + } + // Sanity checks passed, do a proper verification + return self.verifyHeader(chain, header, parent, false) +} + +func (self *DummyEngine) VerifyUncles(chain consensus.ChainReader, block *types.Block) error { + if len(block.Uncles()) > 0 { + return errUnclesUnsupported + } + return nil +} + +func (self *DummyEngine) VerifySeal(chain consensus.ChainHeaderReader, header *types.Header) error { + return nil +} + +func (self *DummyEngine) Prepare(chain consensus.ChainHeaderReader, header *types.Header) error { + header.Difficulty = big.NewInt(1) + return nil +} + +func (self *DummyEngine) verifyBlockFee( + baseFee *big.Int, + requiredBlockGasCost *big.Int, + txs []*types.Transaction, + receipts []*types.Receipt, +) error { + if self.ethFaker { + return nil + } + if baseFee == nil || baseFee.Sign() <= 0 { + return fmt.Errorf("invalid base fee (%d) in SubnetEVM", baseFee) + } + if requiredBlockGasCost == nil || !requiredBlockGasCost.IsUint64() { + return fmt.Errorf("invalid block gas cost (%d) in SubnetEVM", requiredBlockGasCost) + } + + var ( + gasUsed = new(big.Int) + blockFeeContribution = new(big.Int) + totalBlockFee = new(big.Int) + ) + // Calculate the total excess over the base fee that was paid towards the block fee + for i, receipt := range receipts { + // Each transaction contributes the excess over the baseFee towards the totalBlockFee + // This should be equivalent to the sum of the "priority fees" within EIP-1559. + txFeePremium, err := txs[i].EffectiveGasTip(baseFee) + if err != nil { + return err + } + blockFeeContribution.Mul(txFeePremium, gasUsed.SetUint64(receipt.GasUsed)) + totalBlockFee.Add(totalBlockFee, blockFeeContribution) + } + // Calculate how much gas the [totalBlockFee] would purchase at the price level + // set by this block. + blockGas := new(big.Int).Div(totalBlockFee, baseFee) + + // Require that the amount of gas purchased by the effective tips within the block, [blockGas], + // covers at least [requiredBlockGasCost]. + // + // NOTE: To determine the [requiredBlockFee], multiply [requiredBlockGasCost] + // by [baseFee]. + if blockGas.Cmp(requiredBlockGasCost) < 0 { + return fmt.Errorf( + "insufficient gas (%d) to cover the block cost (%d) at base fee (%d) (total block fee: %d)", + blockGas, requiredBlockGasCost, baseFee, totalBlockFee, + ) + } + return nil +} + +func (self *DummyEngine) Finalize(chain consensus.ChainHeaderReader, block *types.Block, parent *types.Header, state *state.StateDB, receipts []*types.Receipt) error { + if chain.Config().IsSubnetEVM(new(big.Int).SetUint64(block.Time())) { + blockGasCostStep := chain.Config().GetFeeConfig().BlockGasCostStep + targetBlockRate := chain.Config().GetFeeConfig().TargetBlockRate + minBlockGasCost := chain.Config().GetFeeConfig().MinBlockGasCost + maxBlockGasCost := chain.Config().GetFeeConfig().MaxBlockGasCost + blockGasCost := calcBlockGasCost( + targetBlockRate, + minBlockGasCost, + maxBlockGasCost, + blockGasCostStep, + parent.BlockGasCost, + parent.Time, block.Time(), + ) + if blockBlockGasCost := block.BlockGasCost(); blockBlockGasCost == nil || !blockBlockGasCost.IsUint64() || blockBlockGasCost.Cmp(blockGasCost) != 0 { + return fmt.Errorf("invalid blockGasCost: have %d, want %d", blockBlockGasCost, blockGasCost) + } + if err := self.verifyBlockFee( + block.BaseFee(), + block.BlockGasCost(), + block.Transactions(), + receipts, + ); err != nil { + return err + } + } + + return nil +} + +func (self *DummyEngine) FinalizeAndAssemble(chain consensus.ChainHeaderReader, header *types.Header, parent *types.Header, state *state.StateDB, txs []*types.Transaction, + uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) { + if chain.Config().IsSubnetEVM(new(big.Int).SetUint64(header.Time)) { + blockGasCostStep := chain.Config().GetFeeConfig().BlockGasCostStep + targetBlockRate := chain.Config().GetFeeConfig().TargetBlockRate + minBlockGasCost := chain.Config().GetFeeConfig().MinBlockGasCost + maxBlockGasCost := chain.Config().GetFeeConfig().MaxBlockGasCost + header.BlockGasCost = calcBlockGasCost( + targetBlockRate, + minBlockGasCost, + maxBlockGasCost, + blockGasCostStep, + parent.BlockGasCost, + parent.Time, header.Time, + ) + if err := self.verifyBlockFee( + header.BaseFee, + header.BlockGasCost, + txs, + receipts, + ); err != nil { + return nil, err + } + } + // commit the final state root + header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number)) + + // Header seems complete, assemble into a block and return + return types.NewBlock( + header, txs, uncles, receipts, new(trie.Trie), + ), nil +} + +func (self *DummyEngine) CalcDifficulty(chain consensus.ChainHeaderReader, time uint64, parent *types.Header) *big.Int { + return big.NewInt(1) +} + +func (self *DummyEngine) Close() error { + return nil +} diff --git a/consensus/dummy/consensus_test.go b/consensus/dummy/consensus_test.go new file mode 100644 index 0000000000..79829c425d --- /dev/null +++ b/consensus/dummy/consensus_test.go @@ -0,0 +1,142 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package dummy + +import ( + "math" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" +) + +var testBlockGasCostStep = big.NewInt(50_000) + +func TestVerifyBlockFee(t *testing.T) { + tests := map[string]struct { + baseFee *big.Int + parentBlockGasCost *big.Int + parentTime, currentTime uint64 + txs []*types.Transaction + receipts []*types.Receipt + shouldErr bool + }{ + "tx only base fee": { + baseFee: big.NewInt(100), + parentBlockGasCost: big.NewInt(0), + parentTime: 10, + currentTime: 10, + txs: []*types.Transaction{ + types.NewTransaction(0, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100, big.NewInt(100), nil), + }, + receipts: []*types.Receipt{ + {GasUsed: 1000}, + }, + shouldErr: true, + }, + "tx covers exactly block fee": { + baseFee: big.NewInt(100), + parentBlockGasCost: big.NewInt(0), + parentTime: 10, + currentTime: 10, + txs: []*types.Transaction{ + types.NewTransaction(0, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100_000, big.NewInt(200), nil), + }, + receipts: []*types.Receipt{ + {GasUsed: 100_000}, + }, + shouldErr: false, + }, + "txs share block fee": { + baseFee: big.NewInt(100), + parentBlockGasCost: big.NewInt(0), + parentTime: 10, + currentTime: 10, + txs: []*types.Transaction{ + types.NewTransaction(0, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100_000, big.NewInt(200), nil), + types.NewTransaction(1, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100_000, big.NewInt(100), nil), + }, + receipts: []*types.Receipt{ + {GasUsed: 100_000}, + {GasUsed: 100_000}, + }, + shouldErr: false, + }, + "txs split block fee": { + baseFee: big.NewInt(100), + parentBlockGasCost: big.NewInt(0), + parentTime: 10, + currentTime: 10, + txs: []*types.Transaction{ + types.NewTransaction(0, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100_000, big.NewInt(150), nil), + types.NewTransaction(1, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100_000, big.NewInt(150), nil), + }, + receipts: []*types.Receipt{ + {GasUsed: 100_000}, + {GasUsed: 100_000}, + }, + shouldErr: false, + }, + "tx only base fee after full time window": { + baseFee: big.NewInt(100), + parentBlockGasCost: big.NewInt(500_000), + parentTime: 10, + currentTime: 22, // 2s target + 10 + txs: []*types.Transaction{ + types.NewTransaction(0, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100, big.NewInt(100), nil), + }, + receipts: []*types.Receipt{ + {GasUsed: 1000}, + }, + shouldErr: false, + }, + "tx only base fee after large time window": { + baseFee: big.NewInt(100), + parentBlockGasCost: big.NewInt(100_000), + parentTime: 0, + currentTime: math.MaxUint64, + txs: []*types.Transaction{ + types.NewTransaction(0, common.HexToAddress("7ef5a6135f1fd6a02593eedc869c6d41d934aef8"), big.NewInt(0), 100, big.NewInt(100), nil), + }, + receipts: []*types.Receipt{ + {GasUsed: 1000}, + }, + shouldErr: false, + }, + "parent time > current time": { + baseFee: big.NewInt(100), + parentBlockGasCost: big.NewInt(0), + parentTime: 11, + currentTime: 10, + txs: nil, + receipts: nil, + shouldErr: true, + }, + } + + for name, test := range tests { + t.Run(name, func(t *testing.T) { + blockGasCost := calcBlockGasCost( + params.DefaultFeeConfig.TargetBlockRate, + params.DefaultFeeConfig.MinBlockGasCost, + params.DefaultFeeConfig.MaxBlockGasCost, + testBlockGasCostStep, + test.parentBlockGasCost, + test.parentTime, test.currentTime, + ) + engine := NewEngine() + if err := engine.verifyBlockFee(test.baseFee, blockGasCost, test.txs, test.receipts); err != nil { + if !test.shouldErr { + t.Fatalf("Unexpected error: %s", err) + } + } else { + if test.shouldErr { + t.Fatal("Should have failed verification") + } + } + }) + } +} diff --git a/consensus/dummy/dynamic_fees.go b/consensus/dummy/dynamic_fees.go new file mode 100644 index 0000000000..70ddc5dd8c --- /dev/null +++ b/consensus/dummy/dynamic_fees.go @@ -0,0 +1,258 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package dummy + +import ( + "encoding/binary" + "fmt" + "math/big" + + "github.com/ava-labs/avalanchego/utils/wrappers" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" +) + +// CalcBaseFee takes the previous header and the timestamp of its child block +// and calculates the expected base fee as well as the encoding of the past +// pricing information for the child block. +func CalcBaseFee(config *params.ChainConfig, parent *types.Header, timestamp uint64) ([]byte, *big.Int, error) { + // If the current block is the first EIP-1559 block, or it is the genesis block + // return the initial slice and initial base fee. + isSubnetEVM := config.IsSubnetEVM(new(big.Int).SetUint64(parent.Time)) + extraDataSize := params.ExtraDataSize + + if !isSubnetEVM || parent.Number.Cmp(common.Big0) == 0 { + initialSlice := make([]byte, extraDataSize) + minBaseFee := config.GetFeeConfig().MinBaseFee + return initialSlice, minBaseFee, nil + } + if len(parent.Extra) != extraDataSize { + return nil, nil, fmt.Errorf("expected length of parent extra data to be %d, but found %d", extraDataSize, len(parent.Extra)) + } + + if timestamp < parent.Time { + return nil, nil, fmt.Errorf("cannot calculate base fee for timestamp (%d) prior to parent timestamp (%d)", timestamp, parent.Time) + } + roll := timestamp - parent.Time + + // roll the window over by the difference between the timestamps to generate + // the new rollup window. + newRollupWindow, err := rollLongWindow(parent.Extra, int(roll)) + if err != nil { + return nil, nil, err + } + + // start off with parent's base fee + baseFee := new(big.Int).Set(parent.BaseFee) + baseFeeChangeDenominator := config.GetFeeConfig().BaseFeeChangeDenominator + + parentGasTargetBig := config.GetFeeConfig().TargetGas + parentGasTarget := parentGasTargetBig.Uint64() + + // Add in the gas used by the parent block in the correct place + // If the parent consumed gas within the rollup window, add the consumed + // gas in. + expectedRollUp := params.RollupWindow + if roll < expectedRollUp { + slot := expectedRollUp - 1 - roll + start := slot * wrappers.LongLen + updateLongWindow(newRollupWindow, start, parent.GasUsed) + } + + // Calculate the amount of gas consumed within the rollup window. + totalGas := sumLongWindow(newRollupWindow, int(expectedRollUp)) + + if totalGas == parentGasTarget { + return newRollupWindow, baseFee, nil + } + + if totalGas > parentGasTarget { + // If the parent block used more gas than its target, the baseFee should increase. + gasUsedDelta := new(big.Int).SetUint64(totalGas - parentGasTarget) + x := new(big.Int).Mul(parent.BaseFee, gasUsedDelta) + y := x.Div(x, parentGasTargetBig) + baseFeeDelta := math.BigMax( + x.Div(y, baseFeeChangeDenominator), + common.Big1, + ) + + // Gas price is increasing, so ensure it does not increase past the maximum + baseFee.Add(baseFee, baseFeeDelta) + } else { + // Otherwise if the parent block used less gas than its target, the baseFee should decrease. + gasUsedDelta := new(big.Int).SetUint64(parentGasTarget - totalGas) + x := new(big.Int).Mul(parent.BaseFee, gasUsedDelta) + y := x.Div(x, parentGasTargetBig) + baseFeeDelta := math.BigMax( + x.Div(y, baseFeeChangeDenominator), + common.Big1, + ) + + // If [roll] is greater than [rollupWindow], apply the state transition to the base fee to account + // for the interval during which no blocks were produced. + // We use roll/rollupWindow, so that the transition is applied for every [rollupWindow] seconds + // that has elapsed between the parent and this block. + if roll > expectedRollUp { + // Note: roll/params.RollupWindow must be greater than 1 since we've checked that roll > params.RollupWindow + baseFeeDelta = baseFeeDelta.Mul(baseFeeDelta, new(big.Int).SetUint64(roll/expectedRollUp)) + } + baseFee.Sub(baseFee, baseFeeDelta) + } + + expectedMinBaseFee := config.GetFeeConfig().MinBaseFee + baseFee = selectBigWithinBounds(expectedMinBaseFee, baseFee, nil) + + return newRollupWindow, baseFee, nil +} + +// selectBigWithinBounds returns [value] if it is within the bounds: +// lowerBound <= value <= upperBound or the bound at either end if [value] +// is outside of the defined boundaries. +func selectBigWithinBounds(lowerBound, value, upperBound *big.Int) *big.Int { + switch { + case lowerBound != nil && value.Cmp(lowerBound) < 0: + return new(big.Int).Set(lowerBound) + case upperBound != nil && value.Cmp(upperBound) > 0: + return new(big.Int).Set(upperBound) + default: + return value + } +} + +// rollWindow rolls the longs within [consumptionWindow] over by [roll] places. +// For example, if there are 4 longs encoded in a 32 byte slice, rollWindow would +// have the following effect: +// Original: +// [1, 2, 3, 4] +// Roll = 0 +// [1, 2, 3, 4] +// Roll = 1 +// [2, 3, 4, 0] +// Roll = 2 +// [3, 4, 0, 0] +// Roll = 3 +// [4, 0, 0, 0] +// Roll >= 4 +// [0, 0, 0, 0] +// Assumes that [roll] is greater than or equal to 0 +func rollWindow(consumptionWindow []byte, size, roll int) ([]byte, error) { + if len(consumptionWindow)%size != 0 { + return nil, fmt.Errorf("expected consumption window length (%d) to be a multiple of size (%d)", len(consumptionWindow), size) + } + + // Note: make allocates a zeroed array, so we are guaranteed + // that what we do not copy into, will be set to 0 + res := make([]byte, len(consumptionWindow)) + bound := roll * size + if bound > len(consumptionWindow) { + return res, nil + } + copy(res[:], consumptionWindow[roll*size:]) + return res, nil +} + +func rollLongWindow(consumptionWindow []byte, roll int) ([]byte, error) { + // Passes in [wrappers.LongLen] as the size of the individual value to be rolled over + // so that it can be used to roll an array of long values. + return rollWindow(consumptionWindow, wrappers.LongLen, roll) +} + +// sumLongWindow sums [numLongs] encoded in [window]. Assumes that the length of [window] +// is sufficient to contain [numLongs] or else this function panics. +// If an overflow occurs, while summing the contents, the maximum uint64 value is returned. +func sumLongWindow(window []byte, numLongs int) uint64 { + var ( + sum uint64 = 0 + overflow bool + ) + for i := 0; i < numLongs; i++ { + // If an overflow occurs while summing the elements of the window, return the maximum + // uint64 value immediately. + sum, overflow = math.SafeAdd(sum, binary.BigEndian.Uint64(window[wrappers.LongLen*i:])) + if overflow { + return math.MaxUint64 + } + } + return sum +} + +// updateLongWindow adds [gasConsumed] in at index within [window]. +// Assumes that [index] has already been validated. +// If an overflow occurs, the maximum uint64 value is used. +func updateLongWindow(window []byte, start uint64, gasConsumed uint64) { + prevGasConsumed := binary.BigEndian.Uint64(window[start:]) + + totalGasConsumed, overflow := math.SafeAdd(prevGasConsumed, gasConsumed) + if overflow { + totalGasConsumed = math.MaxUint64 + } + binary.BigEndian.PutUint64(window[start:], totalGasConsumed) +} + +// calcBlockGasCost calculates the required block gas cost. If [parentTime] +// > [currentTime], the timeElapsed will be treated as 0. +func calcBlockGasCost( + targetBlockRate uint64, + minBlockGasCost *big.Int, + maxBlockGasCost *big.Int, + blockGasCostStep *big.Int, + parentBlockGasCost *big.Int, + parentTime, currentTime uint64, +) *big.Int { + // Handle Subnet EVM boundary by returning the minimum value as the boundary. + if parentBlockGasCost == nil { + return new(big.Int).Set(minBlockGasCost) + } + + // Treat an invalid parent/current time combination as 0 elapsed time. + var timeElapsed uint64 + if parentTime <= currentTime { + timeElapsed = currentTime - parentTime + } + + var blockGasCost *big.Int + if timeElapsed < targetBlockRate { + blockGasCostDelta := new(big.Int).Mul(blockGasCostStep, new(big.Int).SetUint64(targetBlockRate-timeElapsed)) + blockGasCost = new(big.Int).Add(parentBlockGasCost, blockGasCostDelta) + } else { + blockGasCostDelta := new(big.Int).Mul(blockGasCostStep, new(big.Int).SetUint64(timeElapsed-targetBlockRate)) + blockGasCost = new(big.Int).Sub(parentBlockGasCost, blockGasCostDelta) + } + + blockGasCost = selectBigWithinBounds(minBlockGasCost, blockGasCost, maxBlockGasCost) + if !blockGasCost.IsUint64() { + blockGasCost = new(big.Int).SetUint64(math.MaxUint64) + } + return blockGasCost +} + +// MinRequiredTip is the estimated minimum tip a transaction would have +// needed to pay to be included in a given block (assuming it paid a tip +// proportional to its gas usage). In reality, there is no minimum tip that +// is enforced by the consensus engine and high tip paying transactions can +// subsidize the inclusion of low tip paying transactions. The only +// correctness check performed is that the sum of all tips is >= the +// required block fee. +// +// This function will return nil for all return values prior to Subnet EVM. +func MinRequiredTip(config *params.ChainConfig, header *types.Header) (*big.Int, error) { + if !config.IsSubnetEVM(new(big.Int).SetUint64(header.Time)) { + return nil, nil + } + if header.BaseFee == nil { + return nil, errBaseFeeNil + } + if header.BlockGasCost == nil { + return nil, errBlockGasCostNil + } + + // minTip = requiredBlockFee/blockGasUsage + requiredBlockFee := new(big.Int).Mul( + header.BlockGasCost, + header.BaseFee, + ) + return new(big.Int).Div(requiredBlockFee, new(big.Int).SetUint64(header.GasUsed)), nil +} diff --git a/consensus/dummy/dynamic_fees_test.go b/consensus/dummy/dynamic_fees_test.go new file mode 100644 index 0000000000..9621e48cea --- /dev/null +++ b/consensus/dummy/dynamic_fees_test.go @@ -0,0 +1,416 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package dummy + +import ( + "encoding/binary" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/log" + "github.com/stretchr/testify/assert" +) + +func testRollup(t *testing.T, longs []uint64, roll int) { + slice := make([]byte, len(longs)*8) + numLongs := len(longs) + for i := 0; i < numLongs; i++ { + binary.BigEndian.PutUint64(slice[8*i:], longs[i]) + } + + newSlice, err := rollLongWindow(slice, roll) + if err != nil { + t.Fatal(err) + } + // numCopies is the number of longs that should have been copied over from the previous + // slice as opposed to being left empty. + numCopies := numLongs - roll + for i := 0; i < numLongs; i++ { + // Extract the long value that is encoded at position [i] in [newSlice] + num := binary.BigEndian.Uint64(newSlice[8*i:]) + // If the current index is past the point where we should have copied the value + // over from the previous slice, assert that the value encoded in [newSlice] + // is 0 + if i >= numCopies { + if num != 0 { + t.Errorf("Expected num encoded in newSlice at position %d to be 0, but found %d", i, num) + } + } else { + // Otherwise, check that the value was copied over correctly + prevIndex := i + roll + prevNum := longs[prevIndex] + if prevNum != num { + t.Errorf("Expected num encoded in new slice at position %d to be %d, but found %d", i, prevNum, num) + } + } + } +} + +func TestRollupWindow(t *testing.T) { + type test struct { + longs []uint64 + roll int + } + + var tests []test = []test{ + { + []uint64{1, 2, 3, 4}, + 0, + }, + { + []uint64{1, 2, 3, 4}, + 1, + }, + { + []uint64{1, 2, 3, 4}, + 2, + }, + { + []uint64{1, 2, 3, 4}, + 3, + }, + { + []uint64{1, 2, 3, 4}, + 4, + }, + { + []uint64{1, 2, 3, 4}, + 5, + }, + { + []uint64{121, 232, 432}, + 2, + }, + } + + for _, test := range tests { + testRollup(t, test.longs, test.roll) + } +} + +type blockDefinition struct { + timestamp uint64 + gasUsed uint64 +} + +type test struct { + baseFee *big.Int + genBlocks func() []blockDefinition + minFee, maxFee *big.Int +} + +func TestDynamicFees(t *testing.T) { + spacedTimestamps := []uint64{1, 1, 2, 5, 15, 120} + + var tests []test = []test{ + // Test minimal gas usage + { + baseFee: nil, + minFee: params.TestMinBaseFee, + maxFee: params.TestMaxBaseFee, + genBlocks: func() []blockDefinition { + blocks := make([]blockDefinition, 0, len(spacedTimestamps)) + for _, timestamp := range spacedTimestamps { + blocks = append(blocks, blockDefinition{ + timestamp: timestamp, + gasUsed: 21000, + }) + } + return blocks + }, + }, + // Test overflow handling + { + baseFee: nil, + minFee: params.TestMinBaseFee, + maxFee: params.TestMaxBaseFee, + genBlocks: func() []blockDefinition { + blocks := make([]blockDefinition, 0, len(spacedTimestamps)) + for _, timestamp := range spacedTimestamps { + blocks = append(blocks, blockDefinition{ + timestamp: timestamp, + gasUsed: math.MaxUint64, + }) + } + return blocks + }, + }, + { + baseFee: nil, + minFee: params.TestMinBaseFee, + maxFee: params.TestMaxBaseFee, + genBlocks: func() []blockDefinition { + return []blockDefinition{ + { + timestamp: 1, + gasUsed: 1_000_000, + }, + { + timestamp: 3, + gasUsed: 1_000_000, + }, + { + timestamp: 5, + gasUsed: 2_000_000, + }, + { + timestamp: 5, + gasUsed: 6_000_000, + }, + { + timestamp: 7, + gasUsed: 6_000_000, + }, + { + timestamp: 1000, + gasUsed: 6_000_000, + }, + { + timestamp: 1001, + gasUsed: 6_000_000, + }, + { + timestamp: 1002, + gasUsed: 6_000_000, + }, + } + }, + }, + } + + for _, test := range tests { + testDynamicFeesStaysWithinRange(t, test) + } +} + +func testDynamicFeesStaysWithinRange(t *testing.T, test test) { + blocks := test.genBlocks() + initialBlock := blocks[0] + header := &types.Header{ + Time: initialBlock.timestamp, + GasUsed: initialBlock.gasUsed, + Number: big.NewInt(0), + BaseFee: test.baseFee, + } + + for index, block := range blocks[1:] { + tc := params.TestChainConfig + tc.FeeConfig.MinBaseFee = params.TestMinBaseFee + nextExtraData, nextBaseFee, err := CalcBaseFee(params.TestChainConfig, header, block.timestamp) + if err != nil { + t.Fatalf("Failed to calculate base fee at index %d: %s", index, err) + } + if nextBaseFee.Cmp(test.minFee) < 0 { + t.Fatalf("Expected fee to stay greater than %d, but found %d", test.minFee, nextBaseFee) + } + log.Info("Update", "baseFee", nextBaseFee) + header = &types.Header{ + Time: block.timestamp, + GasUsed: block.gasUsed, + Number: big.NewInt(int64(index) + 1), + BaseFee: nextBaseFee, + Extra: nextExtraData, + } + } +} + +func TestLongWindow(t *testing.T) { + longs := []uint64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10} + sumLongs := uint64(0) + longWindow := make([]byte, 10*8) + for i, long := range longs { + sumLongs = sumLongs + long + binary.BigEndian.PutUint64(longWindow[i*8:], long) + } + + sum := sumLongWindow(longWindow, 10) + if sum != sumLongs { + t.Fatalf("Expected sum to be %d but found %d", sumLongs, sum) + } + + for i := uint64(0); i < 10; i++ { + updateLongWindow(longWindow, i*8, i) + sum = sumLongWindow(longWindow, 10) + sumLongs += i + + if sum != sumLongs { + t.Fatalf("Expected sum to be %d but found %d (iteration: %d)", sumLongs, sum, i) + } + } +} + +func TestLongWindowOverflow(t *testing.T) { + longs := []uint64{0, 0, 0, 0, 0, 0, 0, 0, 2, math.MaxUint64 - 1} + longWindow := make([]byte, 10*8) + for i, long := range longs { + binary.BigEndian.PutUint64(longWindow[i*8:], long) + } + + sum := sumLongWindow(longWindow, 10) + if sum != math.MaxUint64 { + t.Fatalf("Expected sum to be maxUint64 (%d), but found %d", uint64(math.MaxUint64), sum) + } + + for i := uint64(0); i < 10; i++ { + updateLongWindow(longWindow, i*8, i) + sum = sumLongWindow(longWindow, 10) + + if sum != math.MaxUint64 { + t.Fatalf("Expected sum to be maxUint64 (%d), but found %d", uint64(math.MaxUint64), sum) + } + } +} + +func TestSelectBigWithinBounds(t *testing.T) { + type test struct { + lower, value, upper, expected *big.Int + } + + tests := map[string]test{ + "value within bounds": { + lower: big.NewInt(0), + value: big.NewInt(5), + upper: big.NewInt(10), + expected: big.NewInt(5), + }, + "value below lower bound": { + lower: big.NewInt(0), + value: big.NewInt(-1), + upper: big.NewInt(10), + expected: big.NewInt(0), + }, + "value above upper bound": { + lower: big.NewInt(0), + value: big.NewInt(11), + upper: big.NewInt(10), + expected: big.NewInt(10), + }, + "value matches lower bound": { + lower: big.NewInt(0), + value: big.NewInt(0), + upper: big.NewInt(10), + expected: big.NewInt(0), + }, + "value matches upper bound": { + lower: big.NewInt(0), + value: big.NewInt(10), + upper: big.NewInt(10), + expected: big.NewInt(10), + }, + } + + for name, test := range tests { + t.Run(name, func(t *testing.T) { + v := selectBigWithinBounds(test.lower, test.value, test.upper) + if v.Cmp(test.expected) != 0 { + t.Fatalf("Expected (%d), found (%d)", test.expected, v) + } + }) + } +} + +func TestCalcBlockGasCost(t *testing.T) { + tests := map[string]struct { + parentBlockGasCost *big.Int + parentTime, currentTime uint64 + + expected *big.Int + }{ + "Nil parentBlockGasCost": { + parentBlockGasCost: nil, + parentTime: 1, + currentTime: 1, + expected: params.DefaultFeeConfig.MinBlockGasCost, + }, + "Same timestamp from 0": { + parentBlockGasCost: big.NewInt(0), + parentTime: 1, + currentTime: 1, + expected: big.NewInt(100_000), + }, + "1s from 0": { + parentBlockGasCost: big.NewInt(0), + parentTime: 1, + currentTime: 2, + expected: big.NewInt(50_000), + }, + "Same timestamp from non-zero": { + parentBlockGasCost: big.NewInt(50_000), + parentTime: 1, + currentTime: 1, + expected: big.NewInt(150_000), + }, + "0s Difference (MAX)": { + parentBlockGasCost: big.NewInt(1_000_000), + parentTime: 1, + currentTime: 1, + expected: big.NewInt(1_000_000), + }, + "1s Difference (MAX)": { + parentBlockGasCost: big.NewInt(1_000_000), + parentTime: 1, + currentTime: 2, + expected: big.NewInt(1_000_000), + }, + "2s Difference": { + parentBlockGasCost: big.NewInt(900_000), + parentTime: 1, + currentTime: 3, + expected: big.NewInt(900_000), + }, + "3s Difference": { + parentBlockGasCost: big.NewInt(1_000_000), + parentTime: 1, + currentTime: 4, + expected: big.NewInt(950_000), + }, + "10s Difference": { + parentBlockGasCost: big.NewInt(1_000_000), + parentTime: 1, + currentTime: 11, + expected: big.NewInt(600_000), + }, + "20s Difference": { + parentBlockGasCost: big.NewInt(1_000_000), + parentTime: 1, + currentTime: 21, + expected: big.NewInt(100_000), + }, + "22s Difference": { + parentBlockGasCost: big.NewInt(1_000_000), + parentTime: 1, + currentTime: 23, + expected: big.NewInt(0), + }, + "23s Difference": { + parentBlockGasCost: big.NewInt(1_000_000), + parentTime: 1, + currentTime: 24, + expected: big.NewInt(0), + }, + "-1s Difference": { + parentBlockGasCost: big.NewInt(50_000), + parentTime: 1, + currentTime: 0, + expected: big.NewInt(150_000), + }, + } + + for name, test := range tests { + t.Run(name, func(t *testing.T) { + assert.Zero(t, test.expected.Cmp(calcBlockGasCost( + params.DefaultFeeConfig.TargetBlockRate, + params.DefaultFeeConfig.MinBlockGasCost, + params.DefaultFeeConfig.MaxBlockGasCost, + testBlockGasCostStep, + test.parentBlockGasCost, + test.parentTime, + test.currentTime, + ))) + }) + } +} diff --git a/consensus/errors.go b/consensus/errors.go new file mode 100644 index 0000000000..93f2de6d88 --- /dev/null +++ b/consensus/errors.go @@ -0,0 +1,47 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package consensus + +import "errors" + +var ( + // ErrUnknownAncestor is returned when validating a block requires an ancestor + // that is unknown. + ErrUnknownAncestor = errors.New("unknown ancestor") + + // ErrPrunedAncestor is returned when validating a block requires an ancestor + // that is known, but the state of which is not available. + ErrPrunedAncestor = errors.New("pruned ancestor") + + // ErrFutureBlock is returned when a block's timestamp is in the future according + // to the current node. + ErrFutureBlock = errors.New("block in the future") + + // ErrInvalidNumber is returned if a block's number doesn't equal its parent's + // plus one. + ErrInvalidNumber = errors.New("invalid block number") +) diff --git a/core/block_validator.go b/core/block_validator.go new file mode 100644 index 0000000000..a1a7c37aa7 --- /dev/null +++ b/core/block_validator.go @@ -0,0 +1,150 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "fmt" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/trie" +) + +// BlockValidator is responsible for validating block headers, uncles and +// processed state. +// +// BlockValidator implements Validator. +type BlockValidator struct { + config *params.ChainConfig // Chain configuration options + bc *BlockChain // Canonical block chain + engine consensus.Engine // Consensus engine used for validating +} + +// NewBlockValidator returns a new block validator which is safe for re-use +func NewBlockValidator(config *params.ChainConfig, blockchain *BlockChain, engine consensus.Engine) *BlockValidator { + validator := &BlockValidator{ + config: config, + engine: engine, + bc: blockchain, + } + return validator +} + +// ValidateBody validates the given block's uncles and verifies the block +// header's transaction and uncle roots. The headers are assumed to be already +// validated at this point. +func (v *BlockValidator) ValidateBody(block *types.Block) error { + // Check whether the block's known, and if not, that it's linkable + if v.bc.HasBlockAndState(block.Hash(), block.NumberU64()) { + return ErrKnownBlock + } + // Header validity is known at this point, check the uncles and transactions + header := block.Header() + if err := v.engine.VerifyUncles(v.bc, block); err != nil { + return err + } + if hash := types.CalcUncleHash(block.Uncles()); hash != header.UncleHash { + return fmt.Errorf("uncle root hash mismatch: have %x, want %x", hash, header.UncleHash) + } + if hash := types.DeriveSha(block.Transactions(), trie.NewStackTrie(nil)); hash != header.TxHash { + return fmt.Errorf("transaction root hash mismatch: have %x, want %x", hash, header.TxHash) + } + if !v.bc.HasBlockAndState(block.ParentHash(), block.NumberU64()-1) { + if !v.bc.HasBlock(block.ParentHash(), block.NumberU64()-1) { + return consensus.ErrUnknownAncestor + } + return consensus.ErrPrunedAncestor + } + return nil +} + +// ValidateState validates the various changes that happen after a state +// transition, such as amount of used gas, the receipt roots and the state root +// itself. ValidateState returns a database batch if the validation was a success +// otherwise nil and an error is returned. +func (v *BlockValidator) ValidateState(block *types.Block, statedb *state.StateDB, receipts types.Receipts, usedGas uint64) error { + header := block.Header() + if block.GasUsed() != usedGas { + return fmt.Errorf("invalid gas used (remote: %d local: %d)", block.GasUsed(), usedGas) + } + // Validate the received block's bloom with the one derived from the generated receipts. + // For valid blocks this should always validate to true. + rbloom := types.CreateBloom(receipts) + if rbloom != header.Bloom { + return fmt.Errorf("invalid bloom (remote: %x local: %x)", header.Bloom, rbloom) + } + // Tre receipt Trie's root (R = (Tr [[H1, R1], ... [Hn, Rn]])) + receiptSha := types.DeriveSha(receipts, trie.NewStackTrie(nil)) + if receiptSha != header.ReceiptHash { + return fmt.Errorf("invalid receipt root hash (remote: %x local: %x)", header.ReceiptHash, receiptSha) + } + // Validate the state root against the received state root and throw + // an error if they don't match. + if root := statedb.IntermediateRoot(v.config.IsEIP158(header.Number)); header.Root != root { + return fmt.Errorf("invalid merkle root (remote: %x local: %x)", header.Root, root) + } + return nil +} + +// CalcGasLimit computes the gas limit of the next block after parent. It aims +// to keep the baseline gas above the provided floor, and increase it towards the +// ceil if the blocks are full. If the ceil is exceeded, it will always decrease +// the gas allowance. +func CalcGasLimit(parentGasUsed, parentGasLimit, gasFloor, gasCeil uint64) uint64 { + // contrib = (parentGasUsed * 3 / 2) / 1024 + contrib := (parentGasUsed + parentGasUsed/2) / params.GasLimitBoundDivisor + + // decay = parentGasLimit / 1024 -1 + decay := parentGasLimit/params.GasLimitBoundDivisor - 1 + + /* + strategy: gasLimit of block-to-mine is set based on parent's + gasUsed value. if parentGasUsed > parentGasLimit * (2/3) then we + increase it, otherwise lower it (or leave it unchanged if it's right + at that usage) the amount increased/decreased depends on how far away + from parentGasLimit * (2/3) parentGasUsed is. + */ + limit := parentGasLimit - decay + contrib + if limit < params.MinGasLimit { + limit = params.MinGasLimit + } + // If we're outside our allowed gas range, we try to hone towards them + if limit < gasFloor { + limit = parentGasLimit + decay + if limit > gasFloor { + limit = gasFloor + } + } else if limit > gasCeil { + limit = parentGasLimit - decay + if limit < gasCeil { + limit = gasCeil + } + } + return limit +} diff --git a/core/blockchain.go b/core/blockchain.go new file mode 100644 index 0000000000..c20c157c09 --- /dev/null +++ b/core/blockchain.go @@ -0,0 +1,1344 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package core implements the Ethereum consensus protocol. +package core + +import ( + "errors" + "fmt" + "io" + "math/big" + "runtime" + "sync" + "sync/atomic" + "time" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/state/snapshot" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" + lru "github.com/hashicorp/golang-lru" +) + +var ( + removeTxIndicesKey = []byte("removed_tx_indices") + + errFutureBlockUnsupported = errors.New("future block insertion not supported") + errCacheConfigNotSpecified = errors.New("must specify cache config") +) + +const ( + bodyCacheLimit = 256 + blockCacheLimit = 256 + receiptsCacheLimit = 32 + txLookupCacheLimit = 1024 + badBlockLimit = 10 + TriesInMemory = 128 + + // BlockChainVersion ensures that an incompatible database forces a resync from scratch. + // + // Changelog: + // + // - Version 4 + // The following incompatible database changes were added: + // * the `BlockNumber`, `TxHash`, `TxIndex`, `BlockHash` and `Index` fields of log are deleted + // * the `Bloom` field of receipt is deleted + // * the `BlockIndex` and `TxIndex` fields of txlookup are deleted + // - Version 5 + // The following incompatible database changes were added: + // * the `TxHash`, `GasCost`, and `ContractAddress` fields are no longer stored for a receipt + // * the `TxHash`, `GasCost`, and `ContractAddress` fields are computed by looking up the + // receipts' corresponding block + // - Version 6 + // The following incompatible database changes were added: + // * Transaction lookup information stores the corresponding block number instead of block hash + // - Version 7 + // The following incompatible database changes were added: + // * Use freezer as the ancient database to maintain all ancient data + // - Version 8 + // The following incompatible database changes were added: + // * New scheme for contract code in order to separate the codes and trie nodes + BlockChainVersion uint64 = 8 + + // statsReportLimit is the time limit during import and export after which we + // always print out progress. This avoids the user wondering what's going on. + statsReportLimit = 8 * time.Second +) + +// CacheConfig contains the configuration values for the trie caching/pruning +// that's resident in a blockchain. +type CacheConfig struct { + TrieCleanLimit int // Memory allowance (MB) to use for caching trie nodes in memory + TrieDirtyLimit int // Memory limit (MB) at which to start flushing dirty trie nodes to disk + Pruning bool // Whether to disable trie write caching and GC altogether (archive node) + SnapshotLimit int // Memory allowance (MB) to use for caching snapshot entries in memory + SnapshotAsync bool // Generate snapshot tree async + SnapshotVerify bool // Verify generated snapshots + Preimages bool // Whether to store preimage of trie key to the disk +} + +var DefaultCacheConfig = &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + SnapshotLimit: 256, +} + +// BlockChain represents the canonical chain given a database with a genesis +// block. The Blockchain manages chain imports, reverts, chain reorganisations. +// +// Importing blocks in to the block chain happens according to the set of rules +// defined by the two stage Validator. Processing of blocks is done using the +// Processor which processes the included transaction. The validation of the state +// is done in the second part of the Validator. Failing results in aborting of +// the import. +// +// The BlockChain also helps in returning blocks from **any** chain included +// in the database as well as blocks that represents the canonical chain. It's +// important to note that GetBlock can return any block and does not need to be +// included in the canonical one where as GetBlockByNumber always represents the +// canonical chain. +type BlockChain struct { + chainConfig *params.ChainConfig // Chain & network configuration + cacheConfig *CacheConfig // Cache configuration for pruning + + db ethdb.Database // Low level persistent database to store final content in + + snaps *snapshot.Tree // Snapshot tree for fast trie leaf access + + hc *HeaderChain + rmLogsFeed event.Feed + chainFeed event.Feed + chainSideFeed event.Feed + chainHeadFeed event.Feed + chainAcceptedFeed event.Feed + logsFeed event.Feed + logsAcceptedFeed event.Feed + blockProcFeed event.Feed + txAcceptedFeed event.Feed + scope event.SubscriptionScope + genesisBlock *types.Block + + // This mutex synchronizes chain write operations. + // Readers don't need to take it, they can just read the database. + chainmu sync.RWMutex + + currentBlock atomic.Value // Current head of the block chain + + stateCache state.Database // State database to reuse between imports (contains state cache) + stateManager TrieWriter + bodyCache *lru.Cache // Cache for the most recent block bodies + receiptsCache *lru.Cache // Cache for the most recent receipts per block + blockCache *lru.Cache // Cache for the most recent entire blocks + txLookupCache *lru.Cache // Cache for the most recent transaction lookup data. + + quit chan struct{} // blockchain quit channel + wg sync.WaitGroup // chain processing wait group for shutting down + running int32 // 0 if chain is running, 1 when stopped + + engine consensus.Engine + validator Validator // Block and state validator interface + prefetcher Prefetcher // Block state prefetcher interface + processor Processor // Block transaction processor interface + vmConfig vm.Config + + badBlocks *lru.Cache // Bad block cache + + lastAccepted *types.Block // Prevents reorgs past this height + + senderCacher *TxSenderCacher +} + +// NewBlockChain returns a fully initialised block chain using information +// available in the database. It initialises the default Ethereum Validator and +// Processor. +func NewBlockChain( + db ethdb.Database, cacheConfig *CacheConfig, chainConfig *params.ChainConfig, engine consensus.Engine, + vmConfig vm.Config, lastAcceptedHash common.Hash, +) (*BlockChain, error) { + if cacheConfig == nil { + return nil, errCacheConfigNotSpecified + } + bodyCache, _ := lru.New(bodyCacheLimit) + receiptsCache, _ := lru.New(receiptsCacheLimit) + blockCache, _ := lru.New(blockCacheLimit) + txLookupCache, _ := lru.New(txLookupCacheLimit) + badBlocks, _ := lru.New(badBlockLimit) + + bc := &BlockChain{ + chainConfig: chainConfig, + cacheConfig: cacheConfig, + db: db, + stateCache: state.NewDatabaseWithConfig(db, &trie.Config{ + Cache: cacheConfig.TrieCleanLimit, + Preimages: cacheConfig.Preimages, + }), + quit: make(chan struct{}), + bodyCache: bodyCache, + receiptsCache: receiptsCache, + blockCache: blockCache, + txLookupCache: txLookupCache, + engine: engine, + vmConfig: vmConfig, + badBlocks: badBlocks, + senderCacher: newTxSenderCacher(runtime.NumCPU()), + } + bc.validator = NewBlockValidator(chainConfig, bc, engine) + bc.prefetcher = newStatePrefetcher(chainConfig, bc, engine) + bc.processor = NewStateProcessor(chainConfig, bc, engine) + + var err error + bc.hc, err = NewHeaderChain(db, chainConfig, engine) + if err != nil { + return nil, err + } + bc.genesisBlock = bc.GetBlockByNumber(0) + if bc.genesisBlock == nil { + return nil, ErrNoGenesis + } + + var nilBlock *types.Block + bc.currentBlock.Store(nilBlock) + + if err := bc.loadLastState(lastAcceptedHash); err != nil { + return nil, err + } + // Create the state manager + bc.stateManager = NewTrieWriter(bc.stateCache.TrieDB(), cacheConfig) + + // Make sure the state associated with the block is available + head := bc.CurrentBlock() + if _, err := state.New(head.Root(), bc.stateCache, nil); err != nil { + return nil, fmt.Errorf("head state missing %d:%s", head.Number(), head.Hash()) + } + + // Load any existing snapshot, regenerating it if loading failed + if bc.cacheConfig.SnapshotLimit > 0 { + // If we are starting from genesis, generate the original snapshot disk layer + // up front, so we can use it while executing blocks in bootstrapping. This + // also avoids a costly async generation process when reaching tip. + async := bc.cacheConfig.SnapshotAsync && head.NumberU64() > 0 + log.Info("Initializing snapshots", "async", async) + bc.snaps, err = snapshot.New(bc.db, bc.stateCache.TrieDB(), bc.cacheConfig.SnapshotLimit, head.Hash(), head.Root(), async, true, bc.cacheConfig.SnapshotVerify) + if err != nil { + log.Error("failed to initialize snapshots", "headHash", head.Hash(), "headRoot", head.Root(), "err", err, "async", async) + } + } + + return bc, nil +} + +// SenderCacher returns the *TxSenderCacher used within the core package. +func (bc *BlockChain) SenderCacher() *TxSenderCacher { + return bc.senderCacher +} + +// empty returns an indicator whether the blockchain is empty. +func (bc *BlockChain) empty() bool { + genesis := bc.genesisBlock.Hash() + for _, hash := range []common.Hash{rawdb.ReadHeadBlockHash(bc.db), rawdb.ReadHeadHeaderHash(bc.db), rawdb.ReadHeadFastBlockHash(bc.db)} { + if hash != genesis { + return false + } + } + return true +} + +// loadLastState loads the last known chain state from the database. This method +// assumes that the chain manager mutex is held. +func (bc *BlockChain) loadLastState(lastAcceptedHash common.Hash) error { + // Initialize genesis state + if lastAcceptedHash == (common.Hash{}) { + return bc.loadGenesisState() + } + + // Restore the last known head block + head := rawdb.ReadHeadBlockHash(bc.db) + if head == (common.Hash{}) { + return errors.New("could not read head block hash") + } + // Make sure the entire head block is available + currentBlock := bc.GetBlockByHash(head) + if currentBlock == nil { + return fmt.Errorf("could not load head block %s", head.Hex()) + } + // Everything seems to be fine, set as the head block + bc.currentBlock.Store(currentBlock) + + // Restore the last known head header + currentHeader := currentBlock.Header() + if head := rawdb.ReadHeadHeaderHash(bc.db); head != (common.Hash{}) { + if header := bc.GetHeaderByHash(head); header != nil { + currentHeader = header + } + } + bc.hc.SetCurrentHeader(currentHeader) + + headerTd := bc.GetTd(currentHeader.Hash(), currentHeader.Number.Uint64()) + blockTd := bc.GetTd(currentBlock.Hash(), currentBlock.NumberU64()) + + log.Info("Loaded most recent local header", "number", currentHeader.Number, "hash", currentHeader.Hash(), "td", headerTd, "age", common.PrettyAge(time.Unix(int64(currentHeader.Time), 0))) + log.Info("Loaded most recent local full block", "number", currentBlock.Number(), "hash", currentBlock.Hash(), "td", blockTd, "age", common.PrettyAge(time.Unix(int64(currentBlock.Time()), 0))) + + // Otherwise, set the last accepted block and perform a re-org. + bc.lastAccepted = bc.GetBlockByHash(lastAcceptedHash) + if bc.lastAccepted == nil { + return fmt.Errorf("could not load last accepted block") + } + + // Remove all processing transaction indices leftover from when we used to + // write transaction indices as soon as a block was verified. + indicesRemoved, err := bc.db.Has(removeTxIndicesKey) + if err != nil { + return fmt.Errorf("unable to determine if transaction indices removed: %w", err) + } + if !indicesRemoved { + indicesRemoved, err := bc.removeIndices(currentBlock.NumberU64(), bc.lastAccepted.NumberU64()) + if err != nil { + return err + } + if err := bc.db.Put(removeTxIndicesKey, bc.lastAccepted.Number().Bytes()); err != nil { + return fmt.Errorf("unable to mark indices removed: %w", err) + } + log.Debug("removed processing transaction indices", "count", indicesRemoved, "currentBlock", currentBlock.NumberU64(), "lastAccepted", bc.lastAccepted.NumberU64()) + } + + // This ensures that the head block is updated to the last accepted block on startup + if err := bc.setPreference(bc.lastAccepted); err != nil { + return fmt.Errorf("failed to set preference to last accepted block while loading last state: %w", err) + } + + // reprocessState as necessary to ensure that the last accepted state is + // available. The state may not be available if it was not committed due + // to an unclean shutdown. + return bc.reprocessState(bc.lastAccepted, 2*commitInterval, true) +} + +// removeIndices removes all transaction lookup entries for the transactions contained in the canonical chain +// from block at height [to] to block at height [from]. Blocks are traversed in reverse order. +func (bc *BlockChain) removeIndices(from, to uint64) (int, error) { + indicesRemoved := 0 + batch := bc.db.NewBatch() + for i := from; i > to; i-- { + b := bc.GetBlockByNumber(i) + if b == nil { + return indicesRemoved, fmt.Errorf("could not load canonical block at height %d", i) + } + for _, tx := range b.Transactions() { + rawdb.DeleteTxLookupEntry(batch, tx.Hash()) + indicesRemoved++ + } + } + if err := batch.Write(); err != nil { + return 0, fmt.Errorf("failed to write batch while removing indices (from: %d, to: %d): %w", from, to, err) + } + return indicesRemoved, nil +} + +func (bc *BlockChain) loadGenesisState() error { + // Prepare the genesis block and reinitialise the chain + batch := bc.db.NewBatch() + rawdb.WriteTd(batch, bc.genesisBlock.Hash(), bc.genesisBlock.NumberU64(), bc.genesisBlock.Difficulty()) + rawdb.WriteBlock(batch, bc.genesisBlock) + if err := batch.Write(); err != nil { + log.Crit("Failed to write genesis block", "err", err) + } + bc.writeHeadBlock(bc.genesisBlock) + + // Last update all in-memory chain markers + bc.lastAccepted = bc.genesisBlock + bc.currentBlock.Store(bc.genesisBlock) + bc.hc.SetGenesis(bc.genesisBlock.Header()) + bc.hc.SetCurrentHeader(bc.genesisBlock.Header()) + return nil +} + +// Export writes the active chain to the given writer. +func (bc *BlockChain) Export(w io.Writer) error { + return bc.ExportN(w, uint64(0), bc.CurrentBlock().NumberU64()) +} + +// ExportN writes a subset of the active chain to the given writer. +func (bc *BlockChain) ExportN(w io.Writer, first uint64, last uint64) error { + bc.chainmu.RLock() + defer bc.chainmu.RUnlock() + + if first > last { + return fmt.Errorf("export failed: first (%d) is greater than last (%d)", first, last) + } + log.Info("Exporting batch of blocks", "count", last-first+1) + + start, reported := time.Now(), time.Now() + for nr := first; nr <= last; nr++ { + block := bc.GetBlockByNumber(nr) + if block == nil { + return fmt.Errorf("export failed on #%d: not found", nr) + } + if err := block.EncodeRLP(w); err != nil { + return err + } + if time.Since(reported) >= statsReportLimit { + log.Info("Exporting blocks", "exported", block.NumberU64()-first, "elapsed", common.PrettyDuration(time.Since(start))) + reported = time.Now() + } + } + return nil +} + +// writeHeadBlock injects a new head block into the current block chain. This method +// assumes that the block is indeed a true head. It will also reset the head +// header and the head fast sync block to this very same block if they are older +// or if they are on a different side chain. +// +// Note, this function assumes that the `mu` mutex is held! +func (bc *BlockChain) writeHeadBlock(block *types.Block) { + // If the block is on a side chain or an unknown one, force other heads onto it too + updateHeads := rawdb.ReadCanonicalHash(bc.db, block.NumberU64()) != block.Hash() + + // Add the block to the canonical chain number scheme and mark as the head + batch := bc.db.NewBatch() + rawdb.WriteCanonicalHash(batch, block.Hash(), block.NumberU64()) + rawdb.WriteHeadBlockHash(batch, block.Hash()) + + // If the block is better than our head or is on a different chain, force update heads + if updateHeads { + rawdb.WriteHeadHeaderHash(batch, block.Hash()) + rawdb.WriteHeadFastBlockHash(batch, block.Hash()) + } + // Flush the whole batch into the disk, exit the node if failed + if err := batch.Write(); err != nil { + log.Crit("Failed to update chain indexes and markers", "err", err) + } + // Update all in-memory chain markers in the last step + if updateHeads { + bc.hc.SetCurrentHeader(block.Header()) + } + bc.currentBlock.Store(block) +} + +// ValidateCanonicalChain confirms a canonical chain is well-formed. +func (bc *BlockChain) ValidateCanonicalChain() error { + current := bc.CurrentBlock() + i := 0 + log.Info("Beginning to validate canonical chain", "startBlock", current.NumberU64()) + + for current.Hash() != bc.genesisBlock.Hash() { + blkByHash := bc.GetBlockByHash(current.Hash()) + if blkByHash == nil { + return fmt.Errorf("couldn't find block by hash %s at height %d", current.Hash().String(), current.Number()) + } + if blkByHash.Hash() != current.Hash() { + return fmt.Errorf("blockByHash returned a block with an unexpected hash: %s, expected: %s", blkByHash.Hash().String(), current.Hash().String()) + } + blkByNumber := bc.GetBlockByNumber(current.Number().Uint64()) + if blkByNumber == nil { + return fmt.Errorf("couldn't find block by number at height %d", current.Number()) + } + if blkByNumber.Hash() != current.Hash() { + return fmt.Errorf("blockByNumber returned a block with unexpected hash: %s, expected: %s", blkByNumber.Hash().String(), current.Hash().String()) + } + + hdrByHash := bc.GetHeaderByHash(current.Hash()) + if hdrByHash == nil { + return fmt.Errorf("couldn't find block header by hash %s at height %d", current.Hash().String(), current.Number()) + } + if hdrByHash.Hash() != current.Hash() { + return fmt.Errorf("hdrByHash returned a block header with an unexpected hash: %s, expected: %s", hdrByHash.Hash().String(), current.Hash().String()) + } + hdrByNumber := bc.GetHeaderByNumber(current.Number().Uint64()) + if hdrByNumber == nil { + return fmt.Errorf("couldn't find block header by number at height %d", current.Number()) + } + if hdrByNumber.Hash() != current.Hash() { + return fmt.Errorf("hdrByNumber returned a block header with unexpected hash: %s, expected: %s", hdrByNumber.Hash().String(), current.Hash().String()) + } + + txs := current.Body().Transactions + + // Transactions are only indexed beneath the last accepted block, so we only check + // that the transactions have been indexed, if we are checking below the last accepted + // block. + if current.NumberU64() <= bc.lastAccepted.NumberU64() { + // Ensure that all of the transactions have been stored correctly in the canonical + // chain + for txIndex, tx := range txs { + txLookup := bc.GetTransactionLookup(tx.Hash()) + if txLookup == nil { + return fmt.Errorf("failed to find transaction %s", tx.Hash().String()) + } + if txLookup.BlockHash != current.Hash() { + return fmt.Errorf("tx lookup returned with incorrect block hash: %s, expected: %s", txLookup.BlockHash.String(), current.Hash().String()) + } + if txLookup.BlockIndex != current.Number().Uint64() { + return fmt.Errorf("tx lookup returned with incorrect block index: %d, expected: %d", txLookup.BlockIndex, current.Number().Uint64()) + } + if txLookup.Index != uint64(txIndex) { + return fmt.Errorf("tx lookup returned with incorrect transaction index: %d, expected: %d", txLookup.Index, txIndex) + } + } + } + + blkReceipts := bc.GetReceiptsByHash(current.Hash()) + if blkReceipts.Len() != len(txs) { + return fmt.Errorf("found %d transaction receipts, expected %d", blkReceipts.Len(), len(txs)) + } + for index, txReceipt := range blkReceipts { + if txReceipt.TxHash != txs[index].Hash() { + return fmt.Errorf("transaction receipt mismatch, expected %s, but found: %s", txs[index].Hash().String(), txReceipt.TxHash.String()) + } + if txReceipt.BlockHash != current.Hash() { + return fmt.Errorf("transaction receipt had block hash %s, but expected %s", txReceipt.BlockHash.String(), current.Hash().String()) + } + if txReceipt.BlockNumber.Uint64() != current.NumberU64() { + return fmt.Errorf("transaction receipt had block number %d, but expected %d", txReceipt.BlockNumber.Uint64(), current.NumberU64()) + } + } + + i += 1 + if i%1000 == 0 { + log.Info("Validate Canonical Chain Update", "totalBlocks", i) + } + + parent := bc.GetBlockByHash(current.ParentHash()) + if parent.Hash() != current.ParentHash() { + return fmt.Errorf("getBlockByHash retrieved parent block with incorrect hash, found %s, expected: %s", parent.Hash().String(), current.ParentHash().String()) + } + current = parent + } + + return nil +} + +// Stop stops the blockchain service. If any imports are currently in progress +// it will abort them using the procInterrupt. +func (bc *BlockChain) Stop() { + if !atomic.CompareAndSwapInt32(&bc.running, 0, 1) { + return + } + + // Unsubscribe all subscriptions registered from blockchain. + bc.scope.Close() + + // Signal shutdown to all goroutines. + close(bc.quit) + bc.wg.Wait() + + if err := bc.stateManager.Shutdown(); err != nil { + log.Error("Failed to Shutdown state manager", "err", err) + } + + log.Info("Blockchain stopped") +} + +// WriteStatus status of write +type WriteStatus byte + +const ( + NonStatTy WriteStatus = iota + CanonStatTy + SideStatTy +) + +// SetPreference attempts to update the head block to be the provided block and +// emits a ChainHeadEvent if successful. This function will handle all reorg +// side effects, if necessary. +// +// Note: This function should ONLY be called on blocks that have already been +// inserted into the chain. +// +// Assumes [bc.chainmu] is not held by the caller. +func (bc *BlockChain) SetPreference(block *types.Block) error { + bc.chainmu.Lock() + defer bc.chainmu.Unlock() + + return bc.setPreference(block) +} + +// setPreference attempts to update the head block to be the provided block and +// emits a ChainHeadEvent if successful. This function will handle all reorg +// side effects, if necessary. +// +// Assumes [bc.chainmu] is held by the caller. +func (bc *BlockChain) setPreference(block *types.Block) error { + current := bc.CurrentBlock() + + // Return early if the current block is already the block + // we are trying to write. + if current.Hash() == block.Hash() { + return nil + } + + log.Debug("Setting preference", "number", block.Number(), "hash", block.Hash()) + + // writeKnownBlock updates the head block and will handle any reorg side + // effects automatically. + if err := bc.writeKnownBlock(block); err != nil { + return fmt.Errorf("unable to invoke writeKnownBlock: %w", err) + } + + // Send an ChainHeadEvent if we end up altering + // the head block. Many internal aysnc processes rely on + // receiving these events (i.e. the TxPool). + bc.chainHeadFeed.Send(ChainHeadEvent{Block: block}) + return nil +} + +// LastAcceptedBlock returns the last block to be marked as accepted. +func (bc *BlockChain) LastAcceptedBlock() *types.Block { + bc.chainmu.Lock() + defer bc.chainmu.Unlock() + + return bc.lastAccepted +} + +// Accept sets a minimum height at which no reorg can pass. Additionally, +// this function may trigger a reorg if the block being accepted is not in the +// canonical chain. +// +// Assumes [bc.chainmu] is not held by the caller. +func (bc *BlockChain) Accept(block *types.Block) error { + bc.chainmu.Lock() + defer bc.chainmu.Unlock() + + // The parent of [block] must be the last accepted block. + if bc.lastAccepted.Hash() != block.ParentHash() { + return fmt.Errorf( + "expected accepted block to have parent %s:%d but got %s:%d", + bc.lastAccepted.Hash().Hex(), + bc.lastAccepted.NumberU64(), + block.ParentHash().Hex(), + block.NumberU64()-1, + ) + } + + // If the canonical hash at the block height does not match the block we are + // accepting, we need to trigger a reorg. + canonical := bc.GetCanonicalHash(block.NumberU64()) + if canonical != block.Hash() { + log.Debug("Accepting block in non-canonical chain", "number", block.Number(), "hash", block.Hash()) + if err := bc.setPreference(block); err != nil { + return fmt.Errorf("could not set new preferred block %d:%s as preferred: %w", block.Number(), block.Hash(), err) + } + } + + bc.lastAccepted = block + + // Abort snapshot generation before pruning anything from trie database + // (could occur in AcceptTrie) + if bc.snaps != nil { + bc.snaps.AbortGeneration() + } + + // Accept Trie + if err := bc.stateManager.AcceptTrie(block); err != nil { + return fmt.Errorf("unable to accept trie: %w", err) + } + + // Flatten the entire snap Trie to disk + if bc.snaps != nil { + if err := bc.snaps.Flatten(block.Hash()); err != nil { + return fmt.Errorf("unable to flatten trie: %w", err) + } + } + + // Update transaction lookup index + batch := bc.db.NewBatch() + rawdb.WriteTxLookupEntriesByBlock(batch, block) + if err := batch.Write(); err != nil { + return fmt.Errorf("failed to write tx lookup entries batch: %w", err) + } + + // Fetch block logs + logs := bc.gatherBlockLogs(block.Hash(), block.NumberU64(), false) + + // Update accepted feeds + bc.chainAcceptedFeed.Send(ChainEvent{Block: block, Hash: block.Hash(), Logs: logs}) + if len(logs) > 0 { + bc.logsAcceptedFeed.Send(logs) + } + if len(block.Transactions()) != 0 { + bc.txAcceptedFeed.Send(NewTxsEvent{block.Transactions()}) + } + + return nil +} + +func (bc *BlockChain) Reject(block *types.Block) error { + bc.chainmu.Lock() + defer bc.chainmu.Unlock() + + // Reject Trie + if err := bc.stateManager.RejectTrie(block); err != nil { + return fmt.Errorf("unable to reject trie: %w", err) + } + + if bc.snaps != nil { + if err := bc.snaps.Discard(block.Hash()); err != nil { + log.Error("unable to discard snap from rejected block", "block", block.Hash(), "number", block.NumberU64(), "root", block.Root()) + } + } + + // Remove the block since its data is no longer needed + batch := bc.db.NewBatch() + rawdb.DeleteBlock(batch, block.Hash(), block.NumberU64()) + if err := batch.Write(); err != nil { + return fmt.Errorf("failed to write delete block batch: %w", err) + } + + return nil +} + +// writeKnownBlock updates the head block flag with a known block +// and introduces chain reorg if necessary. +func (bc *BlockChain) writeKnownBlock(block *types.Block) error { + bc.wg.Add(1) + defer bc.wg.Done() + + current := bc.CurrentBlock() + if block.ParentHash() != current.Hash() { + if err := bc.reorg(current, block); err != nil { + return err + } + } + bc.writeHeadBlock(block) + return nil +} + +// writeCanonicalBlockWithLogs writes the new head [block] and emits events +// for the new head block. +func (bc *BlockChain) writeCanonicalBlockWithLogs(block *types.Block, logs []*types.Log) { + bc.writeHeadBlock(block) + bc.chainFeed.Send(ChainEvent{Block: block, Hash: block.Hash(), Logs: logs}) + if len(logs) > 0 { + bc.logsFeed.Send(logs) + } + bc.chainHeadFeed.Send(ChainHeadEvent{Block: block}) +} + +// newTip returns a boolean indicating if the block should be appended to +// the canonical chain. +func (bc *BlockChain) newTip(block *types.Block) bool { + return block.ParentHash() == bc.CurrentBlock().Hash() +} + +// writeBlockWithState writes the block and all associated state to the database, +// but it expects the chain mutex to be held. +// writeBlockWithState expects to be the last verification step during InsertBlock +// since it creates a reference that will only be cleaned up by Accept/Reject. +func (bc *BlockChain) writeBlockWithState(block *types.Block, receipts []*types.Receipt, logs []*types.Log, state *state.StateDB) (WriteStatus, error) { + bc.wg.Add(1) + defer bc.wg.Done() + + // Calculate the total difficulty of the block + ptd := bc.GetTd(block.ParentHash(), block.NumberU64()-1) + if ptd == nil { + return NonStatTy, consensus.ErrUnknownAncestor + } + // Make sure no inconsistent state is leaked during insertion + // currentBlock := bc.CurrentBlock() + // localTd := bc.GetTd(currentBlock.Hash(), currentBlock.NumberU64()) + externTd := new(big.Int).Add(block.Difficulty(), ptd) + + // Irrelevant of the canonical status, write the block itself to the database. + // + // Note all the components of block(td, hash->number map, header, body, receipts) + // should be written atomically. BlockBatch is used for containing all components. + blockBatch := bc.db.NewBatch() + rawdb.WriteTd(blockBatch, block.Hash(), block.NumberU64(), externTd) + rawdb.WriteBlock(blockBatch, block) + rawdb.WriteReceipts(blockBatch, block.Hash(), block.NumberU64(), receipts) + rawdb.WritePreimages(blockBatch, state.Preimages()) + if err := blockBatch.Write(); err != nil { + log.Crit("Failed to write block into disk", "err", err) + } + // Commit all cached state changes into underlying memory database. + // If snapshots are enabled, call CommitWithSnaps to explicitly create a snapshot + // diff layer for the block. + var err error + if bc.snaps == nil { + _, err = state.Commit(bc.chainConfig.IsEIP158(block.Number())) + } else { + _, err = state.CommitWithSnap(bc.chainConfig.IsEIP158(block.Number()), bc.snaps, block.Hash(), block.ParentHash()) + } + if err != nil { + return NonStatTy, err + } + + // Note: if InsertTrie must be the last step in verification that can return an error. + // This allows [stateManager] to assume that if it inserts a trie without returning an + // error then the block has passed verification and either AcceptTrie/RejectTrie will + // eventually be called on [root] unless a fatal error occurs. It does not assume that + // the node will not shutdown before either AcceptTrie/RejectTrie is called. + if err := bc.stateManager.InsertTrie(block); err != nil { + if bc.snaps != nil { + discardErr := bc.snaps.Discard(block.Hash()) + if discardErr != nil { + log.Debug("failed to discard snapshot after being unable to insert block trie", "block", block.Hash(), "root", block.Root()) + } + } + return NonStatTy, err + } + + // If [block] represents a new tip of the canonical chain, we optimistically add it before + // setPreference is called. Otherwise, we consider it a side chain block. + if bc.newTip(block) { + bc.writeCanonicalBlockWithLogs(block, logs) + return CanonStatTy, nil + } + + bc.chainSideFeed.Send(ChainSideEvent{Block: block}) + return SideStatTy, nil +} + +// InsertChain attempts to insert the given batch of blocks in to the canonical +// chain or, otherwise, create a fork. If an error is returned it will return +// the index number of the failing block as well an error describing what went +// wrong. +// +// After insertion is done, all accumulated events will be fired. +func (bc *BlockChain) InsertChain(chain types.Blocks) (int, error) { + // Sanity check that we have something meaningful to import + if len(chain) == 0 { + return 0, nil + } + + bc.blockProcFeed.Send(true) + defer bc.blockProcFeed.Send(false) + + // Do a sanity check that the provided chain is actually ordered and linked. + for i := 1; i < len(chain); i++ { + block, prev := chain[i], chain[i-1] + if block.NumberU64() != prev.NumberU64()+1 || block.ParentHash() != prev.Hash() { + log.Error("Non contiguous block insert", + "number", block.Number(), + "hash", block.Hash(), + "parent", block.ParentHash(), + "prevnumber", prev.Number(), + "prevhash", prev.Hash(), + ) + return 0, fmt.Errorf("non contiguous insert: item %d is #%d [%x…], item %d is #%d [%x…] (parent [%x…])", i-1, prev.NumberU64(), + prev.Hash().Bytes()[:4], i, block.NumberU64(), block.Hash().Bytes()[:4], block.ParentHash().Bytes()[:4]) + } + } + // Pre-checks passed, start the full block imports + bc.wg.Add(1) + defer bc.wg.Done() + + bc.chainmu.Lock() + defer bc.chainmu.Unlock() + for n, block := range chain { + if err := bc.insertBlock(block, true); err != nil { + return n, err + } + } + + return len(chain), nil +} + +func (bc *BlockChain) InsertBlock(block *types.Block) error { + return bc.InsertBlockManual(block, true) +} + +func (bc *BlockChain) InsertBlockManual(block *types.Block, writes bool) error { + bc.blockProcFeed.Send(true) + defer bc.blockProcFeed.Send(false) + + bc.wg.Add(1) + bc.chainmu.Lock() + err := bc.insertBlock(block, writes) + bc.chainmu.Unlock() + bc.wg.Done() + + return err +} + +// gatherBlockLogs fetches logs from a previously inserted block. +func (bc *BlockChain) gatherBlockLogs(hash common.Hash, number uint64, removed bool) []*types.Log { + receipts := rawdb.ReadReceipts(bc.db, hash, number, bc.chainConfig) + var logs []*types.Log + for _, receipt := range receipts { + for _, log := range receipt.Logs { + l := *log + if removed { + l.Removed = true + } + logs = append(logs, &l) + } + } + + return logs +} + +func (bc *BlockChain) insertBlock(block *types.Block, writes bool) error { + bc.senderCacher.Recover(types.MakeSigner(bc.chainConfig, block.Number(), new(big.Int).SetUint64(block.Time())), block.Transactions()) + + err := bc.engine.VerifyHeader(bc, block.Header()) + if err == nil { + err = bc.validator.ValidateBody(block) + } + + switch { + case errors.Is(err, ErrKnownBlock): + // even if the block is already known, we still need to generate the + // snapshot layer and add a reference to the triedb, so we re-execute + // the block. Note that insertBlock should only be called on a block + // once if it returns nil + if bc.newTip(block) { + log.Debug("Setting head to be known block", "number", block.Number(), "hash", block.Hash()) + } else { + log.Debug("Reprocessing already known block", "number", block.Number(), "hash", block.Hash()) + } + + // If an ancestor has been pruned, then this block cannot be acceptable. + case errors.Is(err, consensus.ErrPrunedAncestor): + return errors.New("side chain insertion is not supported") + + // Future blocks are not supported, but should not be reported, so we return an error + // early here + case errors.Is(err, consensus.ErrFutureBlock): + return errFutureBlockUnsupported + + // Some other error occurred, abort + case err != nil: + bc.reportBlock(block, nil, err) + return err + } + // No validation errors for the block + var activeState *state.StateDB + defer func() { + // The chain importer is starting and stopping trie prefetchers. If a bad + // block or other error is hit however, an early return may not properly + // terminate the background threads. This defer ensures that we clean up + // and dangling prefetcher, without defering each and holding on live refs. + if activeState != nil { + activeState.StopPrefetcher() + } + }() + + // Retrieve the parent block and it's state to execute on top + start := time.Now() + + parent := bc.GetHeader(block.ParentHash(), block.NumberU64()-1) + + var statedb *state.StateDB + if bc.snaps == nil { + statedb, err = state.New(parent.Root, bc.stateCache, nil) + } else { + snap := bc.snaps.Snapshot(parent.Root) + if snap == nil { + return fmt.Errorf("failed to get snapshot for parent root: %s", parent.Root) + } + statedb, err = state.NewWithSnapshot(parent.Root, bc.stateCache, snap) + } + if err != nil { + return err + } + + // Enable prefetching to pull in trie node paths while processing transactions + statedb.StartPrefetcher("chain") + activeState = statedb + + // If we have a followup block, run that against the current state to pre-cache + // transactions and probabilistically some of the account/storage trie nodes. + // Process block using the parent state as reference point + receipts, logs, usedGas, err := bc.processor.Process(block, parent, statedb, bc.vmConfig) + if err != nil { + bc.reportBlock(block, receipts, err) + return err + } + + // Validate the state using the default validator + if err := bc.validator.ValidateState(block, statedb, receipts, usedGas); err != nil { + bc.reportBlock(block, receipts, err) + return err + } + + // If [writes] are disabled, skip [writeBlockWithState] so that we do not write the block + // or the state trie to disk. + // Note: in pruning mode, this prevents us from generating a reference to the state root. + if !writes { + return nil + } + + // Write the block to the chain and get the status. + // writeBlockWithState creates a reference that will be cleaned up in Accept/Reject + // so we need to ensure an error cannot occur later in verification, since that would + // cause the referenced root to never be dereferenced. + status, err := bc.writeBlockWithState(block, receipts, logs, statedb) + if err != nil { + return err + } + + switch status { + case CanonStatTy: + log.Debug("Inserted new block", "number", block.Number(), "hash", block.Hash(), + "parentHash", block.ParentHash(), + "uncles", len(block.Uncles()), "txs", len(block.Transactions()), "gas", block.GasUsed(), + "elapsed", common.PrettyDuration(time.Since(start)), + "root", block.Root(), "baseFeePerGas", block.BaseFee(), "blockGasCost", block.BlockGasCost(), + ) + // Only count canonical blocks for GC processing time + case SideStatTy: + log.Debug("Inserted forked block", "number", block.Number(), "hash", block.Hash(), + "parentHash", block.ParentHash(), + "diff", block.Difficulty(), "elapsed", common.PrettyDuration(time.Since(start)), + "txs", len(block.Transactions()), "gas", block.GasUsed(), "uncles", len(block.Uncles()), + "root", block.Root(), "baseFeePerGas", block.BaseFee(), "blockGasCost", block.BlockGasCost(), + ) + default: + // This in theory is impossible, but lets be nice to our future selves and leave + // a log, instead of trying to track down blocks imports that don't emit logs. + log.Warn("Inserted block with unknown status", "number", block.Number(), "hash", block.Hash(), + "parentHash", block.ParentHash(), + "diff", block.Difficulty(), "elapsed", common.PrettyDuration(time.Since(start)), + "txs", len(block.Transactions()), "gas", block.GasUsed(), "uncles", len(block.Uncles()), + "root", block.Root(), "baseFeePerGas", block.BaseFee(), "blockGasCost", block.BlockGasCost(), + ) + } + + return err +} + +// reorg takes two blocks, an old chain and a new chain and will reconstruct the +// blocks and inserts them to be part of the new canonical chain and accumulates +// potential missing transactions and post an event about them. +func (bc *BlockChain) reorg(oldBlock, newBlock *types.Block) error { + var ( + newHead = newBlock + oldHead = oldBlock + + newChain types.Blocks + oldChain types.Blocks + commonBlock *types.Block + + deletedLogs [][]*types.Log + rebirthLogs [][]*types.Log + + // collectLogs collects the logs that were generated or removed during + // the processing of the block that corresponds with the given hash. + // These logs are later announced as deleted or reborn + collectLogs = func(hash common.Hash, removed bool) { + number := bc.hc.GetBlockNumber(hash) + if number == nil { + return + } + logs := bc.gatherBlockLogs(hash, *number, removed) + if len(logs) > 0 { + if removed { + deletedLogs = append(deletedLogs, logs) + } else { + rebirthLogs = append(rebirthLogs, logs) + } + } + } + // mergeLogs returns a merged log slice with specified sort order. + mergeLogs = func(logs [][]*types.Log, reverse bool) []*types.Log { + var ret []*types.Log + if reverse { + for i := len(logs) - 1; i >= 0; i-- { + ret = append(ret, logs[i]...) + } + } else { + for i := 0; i < len(logs); i++ { + ret = append(ret, logs[i]...) + } + } + return ret + } + ) + // Reduce the longer chain to the same number as the shorter one + if oldBlock.NumberU64() > newBlock.NumberU64() { + // Old chain is longer, gather all transactions and logs as deleted ones + for ; oldBlock != nil && oldBlock.NumberU64() != newBlock.NumberU64(); oldBlock = bc.GetBlock(oldBlock.ParentHash(), oldBlock.NumberU64()-1) { + oldChain = append(oldChain, oldBlock) + collectLogs(oldBlock.Hash(), true) + } + } else { + // New chain is longer, stash all blocks away for subsequent insertion + for ; newBlock != nil && newBlock.NumberU64() != oldBlock.NumberU64(); newBlock = bc.GetBlock(newBlock.ParentHash(), newBlock.NumberU64()-1) { + newChain = append(newChain, newBlock) + } + } + if oldBlock == nil { + return fmt.Errorf("invalid old chain") + } + if newBlock == nil { + return fmt.Errorf("invalid new chain") + } + // Both sides of the reorg are at the same number, reduce both until the common + // ancestor is found + for { + // If the common ancestor was found, bail out + if oldBlock.Hash() == newBlock.Hash() { + commonBlock = oldBlock + break + } + // Remove an old block as well as stash away a new block + oldChain = append(oldChain, oldBlock) + collectLogs(oldBlock.Hash(), true) + + newChain = append(newChain, newBlock) + + // Step back with both chains + oldBlock = bc.GetBlock(oldBlock.ParentHash(), oldBlock.NumberU64()-1) + if oldBlock == nil { + return fmt.Errorf("invalid old chain") + } + newBlock = bc.GetBlock(newBlock.ParentHash(), newBlock.NumberU64()-1) + if newBlock == nil { + return fmt.Errorf("invalid new chain") + } + } + + // If the commonBlock is less than the last accepted height, we return an error + // because performing a reorg would mean removing an accepted block from the + // canonical chain. + if commonBlock.NumberU64() < bc.lastAccepted.NumberU64() { + return fmt.Errorf("cannot orphan finalized block at height: %d to common block at height: %d", bc.lastAccepted.NumberU64(), commonBlock.NumberU64()) + } + + // Ensure the user sees large reorgs + if len(oldChain) > 0 && len(newChain) > 0 { + logFn := log.Info + msg := "Chain reorg detected" + if len(oldChain) > 63 { + msg = "Large chain reorg detected" + logFn = log.Warn + } + logFn(msg, "number", commonBlock.Number(), "hash", commonBlock.Hash(), + "drop", len(oldChain), "dropfrom", oldChain[0].Hash(), "add", len(newChain), "addfrom", newChain[0].Hash()) + } else { + log.Warn("Unlikely reorg (rewind to ancestor) occurred", "oldnum", oldHead.Number(), "oldhash", oldHead.Hash(), "newnum", newHead.Number(), "newhash", newHead.Hash()) + } + // Insert the new chain(except the head block(reverse order)), + // taking care of the proper incremental order. + for i := len(newChain) - 1; i >= 1; i-- { + // Insert the block in the canonical way, re-writing history + bc.writeHeadBlock(newChain[i]) + + // Collect reborn logs due to chain reorg + collectLogs(newChain[i].Hash(), false) + } + // Delete any canonical number assignments above the new head + indexesBatch := bc.db.NewBatch() + + // Use the height of [newHead] to determine which canonical hashes to remove + // in case the new chain is shorter than the old chain, in which case + // there may be hashes set on the canonical chain that were invalidated + // but not yet overwritten by the re-org. + for i := newHead.NumberU64() + 1; ; i++ { + hash := rawdb.ReadCanonicalHash(bc.db, i) + if hash == (common.Hash{}) { + break + } + rawdb.DeleteCanonicalHash(indexesBatch, i) + } + if err := indexesBatch.Write(); err != nil { + log.Crit("Failed to delete useless indexes", "err", err) + } + // If any logs need to be fired, do it now. In theory we could avoid creating + // this goroutine if there are no events to fire, but realistcally that only + // ever happens if we're reorging empty blocks, which will only happen on idle + // networks where performance is not an issue either way. + if len(deletedLogs) > 0 { + bc.rmLogsFeed.Send(RemovedLogsEvent{mergeLogs(deletedLogs, true)}) + } + if len(rebirthLogs) > 0 { + bc.logsFeed.Send(mergeLogs(rebirthLogs, false)) + } + if len(oldChain) > 0 { + for i := len(oldChain) - 1; i >= 0; i-- { + bc.chainSideFeed.Send(ChainSideEvent{Block: oldChain[i]}) + } + } + return nil +} + +// BadBlocks returns a list of the last 'bad blocks' that the client has seen on the network +func (bc *BlockChain) BadBlocks() []*types.Block { + blocks := make([]*types.Block, 0, bc.badBlocks.Len()) + for _, hash := range bc.badBlocks.Keys() { + if blk, exist := bc.badBlocks.Peek(hash); exist { + block := blk.(*types.Block) + blocks = append(blocks, block) + } + } + return blocks +} + +// addBadBlock adds a bad block to the bad-block LRU cache +func (bc *BlockChain) addBadBlock(block *types.Block) { + bc.badBlocks.Add(block.Hash(), block) +} + +// reportBlock logs a bad block error. +func (bc *BlockChain) reportBlock(block *types.Block, receipts types.Receipts, err error) { + bc.addBadBlock(block) + + var receiptString string + for i, receipt := range receipts { + receiptString += fmt.Sprintf("\t %d: cumulative: %v gas: %v contract: %v status: %v tx: %v logs: %v bloom: %x state: %x\n", + i, receipt.CumulativeGasUsed, receipt.GasUsed, receipt.ContractAddress.Hex(), + receipt.Status, receipt.TxHash.Hex(), receipt.Logs, receipt.Bloom, receipt.PostState) + } + log.Error(fmt.Sprintf(` +########## BAD BLOCK ######### +Chain config: %v + +Number: %v +Hash: 0x%x +%v + +Error: %v +############################## +`, bc.chainConfig, block.Number(), block.Hash(), receiptString, err)) +} + +func (bc *BlockChain) RemoveRejectedBlocks(start, end uint64) error { + batch := bc.db.NewBatch() + + for i := start; i < end; i++ { + hashes := rawdb.ReadAllHashes(bc.db, i) + canonicalBlock := bc.GetBlockByNumber((i)) + if canonicalBlock == nil { + return fmt.Errorf("failed to retrieve block by number at height %d", i) + } + canonicalHash := canonicalBlock.Hash() + for _, hash := range hashes { + if hash == canonicalHash { + continue + } + rawdb.DeleteBlock(batch, hash, i) + } + + if err := batch.Write(); err != nil { + return fmt.Errorf("failed to write delete rejected block batch at height %d", i) + } + batch.Reset() + } + + return nil +} + +// reprocessState reprocesses the state up to [block], iterating through its ancestors until +// it reaches a block with a state committed to the database. reprocessState does not use +// snapshots since the disk layer for snapshots will most likely be above the last committed +// state that reprocessing will start from. +func (bc *BlockChain) reprocessState(current *types.Block, reexec uint64, report bool) error { + origin := current.NumberU64() + // If the state is already available, skip re-processing + statedb, err := state.New(current.Root(), bc.stateCache, nil) + if err == nil { + return nil + } + // Check how far back we need to re-execute, capped at [reexec] + for i := 0; i < int(reexec); i++ { + if current.NumberU64() == 0 { + return errors.New("genesis state is missing") + } + parent := bc.GetBlock(current.ParentHash(), current.NumberU64()-1) + if parent == nil { + return fmt.Errorf("missing block %s:%d", current.ParentHash().Hex(), current.NumberU64()-1) + } + current = parent + + statedb, err = state.New(current.Root(), bc.stateCache, nil) + if err == nil { + break + } + } + if err != nil { + switch err.(type) { + case *trie.MissingNodeError: + return fmt.Errorf("required historical state unavailable (reexec=%d)", reexec) + default: + return err + } + } + + // State was available at historical point, regenerate + var ( + start = time.Now() + logged time.Time + previousRoot common.Hash + triedb = bc.stateCache.TrieDB() + ) + // Note: we add 1 since in each iteration, we attempt to re-execute the next block. + log.Info("Re-executing blocks to generate state for last accepted block", "from", current.NumberU64()+1, "to", origin) + for current.NumberU64() < origin { + // Print progress logs if long enough time elapsed + if time.Since(logged) > 8*time.Second && report { + log.Info("Regenerating historical state", "block", current.NumberU64()+1, "target", origin, "remaining", origin-current.NumberU64(), "elapsed", time.Since(start)) + logged = time.Now() + } + // Retrieve the next block to regenerate and process it + parent := current + next := current.NumberU64() + 1 + if current = bc.GetBlockByNumber(next); current == nil { + return fmt.Errorf("failed to retrieve block %d while re-generating state", next) + } + receipts, _, usedGas, err := bc.processor.Process(current, parent.Header(), statedb, vm.Config{}) + if err != nil { + return fmt.Errorf("failed to re-process block (%s: %d): %v", current.Hash().Hex(), current.NumberU64(), err) + } + // Validate the state using the default validator + if err := bc.validator.ValidateState(current, statedb, receipts, usedGas); err != nil { + return fmt.Errorf("failed to validate state while re-processing block (%s: %d): %v", current.Hash().Hex(), current.NumberU64(), err) + } + log.Debug("processed block", "block", current.Hash(), "number", current.NumberU64()) + // Finalize the state so any modifications are written to the trie + root, err := statedb.Commit(bc.chainConfig.IsEIP158(current.Number())) + if err != nil { + return err + } + statedb, err = state.New(root, bc.stateCache, nil) + if err != nil { + return fmt.Errorf("state reset after block %d failed: %v", current.NumberU64(), err) + } + + triedb.Reference(root, common.Hash{}) + if previousRoot != (common.Hash{}) { + triedb.Dereference(previousRoot) + } + previousRoot = root + } + if report { + nodes, imgs := triedb.Size() + log.Info("Historical state regenerated", "block", current.NumberU64(), "elapsed", time.Since(start), "nodes", nodes, "preimages", imgs) + } + if previousRoot != (common.Hash{}) { + return triedb.Commit(previousRoot, report, nil) + } + return nil +} diff --git a/core/blockchain_reader.go b/core/blockchain_reader.go new file mode 100644 index 0000000000..37d1bfbc4f --- /dev/null +++ b/core/blockchain_reader.go @@ -0,0 +1,353 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "math/big" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/state/snapshot" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" +) + +// CurrentHeader retrieves the current head header of the canonical chain. The +// header is retrieved from the HeaderChain's internal cache. +func (bc *BlockChain) CurrentHeader() *types.Header { + return bc.hc.CurrentHeader() +} + +// CurrentBlock retrieves the current head block of the canonical chain. The +// block is retrieved from the blockchain's internal cache. +func (bc *BlockChain) CurrentBlock() *types.Block { + return bc.currentBlock.Load().(*types.Block) +} + +// HasHeader checks if a block header is present in the database or not, caching +// it if present. +func (bc *BlockChain) HasHeader(hash common.Hash, number uint64) bool { + return bc.hc.HasHeader(hash, number) +} + +// GetHeader retrieves a block header from the database by hash and number, +// caching it if found. +func (bc *BlockChain) GetHeader(hash common.Hash, number uint64) *types.Header { + return bc.hc.GetHeader(hash, number) +} + +// GetHeaderByHash retrieves a block header from the database by hash, caching it if +// found. +func (bc *BlockChain) GetHeaderByHash(hash common.Hash) *types.Header { + return bc.hc.GetHeaderByHash(hash) +} + +// GetHeaderByNumber retrieves a block header from the database by number, +// caching it (associated with its hash) if found. +func (bc *BlockChain) GetHeaderByNumber(number uint64) *types.Header { + return bc.hc.GetHeaderByNumber(number) +} + +// GetBody retrieves a block body (transactions and uncles) from the database by +// hash, caching it if found. +func (bc *BlockChain) GetBody(hash common.Hash) *types.Body { + // Short circuit if the body's already in the cache, retrieve otherwise + if cached, ok := bc.bodyCache.Get(hash); ok { + body := cached.(*types.Body) + return body + } + number := bc.hc.GetBlockNumber(hash) + if number == nil { + return nil + } + body := rawdb.ReadBody(bc.db, hash, *number) + if body == nil { + return nil + } + // Cache the found body for next time and return + bc.bodyCache.Add(hash, body) + return body +} + +// HasBlock checks if a block is fully present in the database or not. +func (bc *BlockChain) HasBlock(hash common.Hash, number uint64) bool { + if bc.blockCache.Contains(hash) { + return true + } + return rawdb.HasBody(bc.db, hash, number) +} + +// HasFastBlock checks if a fast block is fully present in the database or not. +func (bc *BlockChain) HasFastBlock(hash common.Hash, number uint64) bool { + if !bc.HasBlock(hash, number) { + return false + } + if bc.receiptsCache.Contains(hash) { + return true + } + return rawdb.HasReceipts(bc.db, hash, number) +} + +// GetBlock retrieves a block from the database by hash and number, +// caching it if found. +func (bc *BlockChain) GetBlock(hash common.Hash, number uint64) *types.Block { + // Short circuit if the block's already in the cache, retrieve otherwise + if block, ok := bc.blockCache.Get(hash); ok { + return block.(*types.Block) + } + block := rawdb.ReadBlock(bc.db, hash, number) + if block == nil { + return nil + } + // Cache the found block for next time and return + bc.blockCache.Add(block.Hash(), block) + return block +} + +// GetBlockByHash retrieves a block from the database by hash, caching it if found. +func (bc *BlockChain) GetBlockByHash(hash common.Hash) *types.Block { + number := bc.hc.GetBlockNumber(hash) + if number == nil { + return nil + } + return bc.GetBlock(hash, *number) +} + +// GetBlockByNumber retrieves a block from the database by number, caching it +// (associated with its hash) if found. +func (bc *BlockChain) GetBlockByNumber(number uint64) *types.Block { + hash := rawdb.ReadCanonicalHash(bc.db, number) + if hash == (common.Hash{}) { + return nil + } + return bc.GetBlock(hash, number) +} + +// GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors. +// [deprecated by eth/62] +func (bc *BlockChain) GetBlocksFromHash(hash common.Hash, n int) (blocks []*types.Block) { + number := bc.hc.GetBlockNumber(hash) + if number == nil { + return nil + } + for i := 0; i < n; i++ { + block := bc.GetBlock(hash, *number) + if block == nil { + break + } + blocks = append(blocks, block) + hash = block.ParentHash() + *number-- + } + return +} + +// GetReceiptsByHash retrieves the receipts for all transactions in a given block. +func (bc *BlockChain) GetReceiptsByHash(hash common.Hash) types.Receipts { + if receipts, ok := bc.receiptsCache.Get(hash); ok { + return receipts.(types.Receipts) + } + number := rawdb.ReadHeaderNumber(bc.db, hash) + if number == nil { + return nil + } + receipts := rawdb.ReadReceipts(bc.db, hash, *number, bc.chainConfig) + if receipts == nil { + return nil + } + bc.receiptsCache.Add(hash, receipts) + return receipts +} + +// GetCanonicalHash returns the canonical hash for a given block number +func (bc *BlockChain) GetCanonicalHash(number uint64) common.Hash { + return bc.hc.GetCanonicalHash(number) +} + +// GetTransactionLookup retrieves the lookup associate with the given transaction +// hash from the cache or database. +func (bc *BlockChain) GetTransactionLookup(hash common.Hash) *rawdb.LegacyTxLookupEntry { + // Short circuit if the txlookup already in the cache, retrieve otherwise + if lookup, exist := bc.txLookupCache.Get(hash); exist { + return lookup.(*rawdb.LegacyTxLookupEntry) + } + tx, blockHash, blockNumber, txIndex := rawdb.ReadTransaction(bc.db, hash) + if tx == nil { + return nil + } + lookup := &rawdb.LegacyTxLookupEntry{BlockHash: blockHash, BlockIndex: blockNumber, Index: txIndex} + bc.txLookupCache.Add(hash, lookup) + return lookup +} + +// GetTd retrieves a block's total difficulty in the canonical chain from the +// database by hash and number, caching it if found. +func (bc *BlockChain) GetTd(hash common.Hash, number uint64) *big.Int { + return bc.hc.GetTd(hash, number) +} + +// HasState checks if state trie is fully present in the database or not. +func (bc *BlockChain) HasState(hash common.Hash) bool { + _, err := bc.stateCache.OpenTrie(hash) + return err == nil +} + +// HasBlockAndState checks if a block and associated state trie is fully present +// in the database or not, caching it if present. +func (bc *BlockChain) HasBlockAndState(hash common.Hash, number uint64) bool { + // Check first that the block itself is known + block := bc.GetBlock(hash, number) + if block == nil { + return false + } + return bc.HasState(block.Root()) +} + +// TrieNode retrieves a blob of data associated with a trie node +// either from ephemeral in-memory cache, or from persistent storage. +func (bc *BlockChain) TrieNode(hash common.Hash) ([]byte, error) { + return bc.stateCache.TrieDB().Node(hash) +} + +// ContractCode retrieves a blob of data associated with a contract hash +// either from ephemeral in-memory cache, or from persistent storage. +func (bc *BlockChain) ContractCode(hash common.Hash) ([]byte, error) { + return bc.stateCache.ContractCode(common.Hash{}, hash) +} + +// ContractCodeWithPrefix retrieves a blob of data associated with a contract +// hash either from ephemeral in-memory cache, or from persistent storage. +// +// If the code doesn't exist in the in-memory cache, check the storage with +// new code scheme. +func (bc *BlockChain) ContractCodeWithPrefix(hash common.Hash) ([]byte, error) { + type codeReader interface { + ContractCodeWithPrefix(addrHash, codeHash common.Hash) ([]byte, error) + } + return bc.stateCache.(codeReader).ContractCodeWithPrefix(common.Hash{}, hash) +} + +// State returns a new mutable state based on the current HEAD block. +func (bc *BlockChain) State() (*state.StateDB, error) { + return bc.StateAt(bc.CurrentBlock().Root()) +} + +// StateAt returns a new mutable state based on a particular point in time. +func (bc *BlockChain) StateAt(root common.Hash) (*state.StateDB, error) { + return state.New(root, bc.stateCache, bc.snaps) +} + +// Config retrieves the chain's fork configuration. +func (bc *BlockChain) Config() *params.ChainConfig { return bc.chainConfig } + +// Engine retrieves the blockchain's consensus engine. +func (bc *BlockChain) Engine() consensus.Engine { return bc.engine } + +// Snapshots returns the blockchain snapshot tree. +func (bc *BlockChain) Snapshots() *snapshot.Tree { + return bc.snaps +} + +// Validator returns the current validator. +func (bc *BlockChain) Validator() Validator { + return bc.validator +} + +// Processor returns the current processor. +func (bc *BlockChain) Processor() Processor { + return bc.processor +} + +// StateCache returns the caching database underpinning the blockchain instance. +func (bc *BlockChain) StateCache() state.Database { + return bc.stateCache +} + +// GasLimit returns the gas limit of the current HEAD block. +func (bc *BlockChain) GasLimit() uint64 { + return bc.CurrentBlock().GasLimit() +} + +// Genesis retrieves the chain's genesis block. +func (bc *BlockChain) Genesis() *types.Block { + return bc.genesisBlock +} + +// GetVMConfig returns the block chain VM config. +func (bc *BlockChain) GetVMConfig() *vm.Config { + return &bc.vmConfig +} + +// SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent. +func (bc *BlockChain) SubscribeRemovedLogsEvent(ch chan<- RemovedLogsEvent) event.Subscription { + return bc.scope.Track(bc.rmLogsFeed.Subscribe(ch)) +} + +// SubscribeChainEvent registers a subscription of ChainEvent. +func (bc *BlockChain) SubscribeChainEvent(ch chan<- ChainEvent) event.Subscription { + return bc.scope.Track(bc.chainFeed.Subscribe(ch)) +} + +// SubscribeChainHeadEvent registers a subscription of ChainHeadEvent. +func (bc *BlockChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription { + return bc.scope.Track(bc.chainHeadFeed.Subscribe(ch)) +} + +// SubscribeChainSideEvent registers a subscription of ChainSideEvent. +func (bc *BlockChain) SubscribeChainSideEvent(ch chan<- ChainSideEvent) event.Subscription { + return bc.scope.Track(bc.chainSideFeed.Subscribe(ch)) +} + +// SubscribeLogsEvent registers a subscription of []*types.Log. +func (bc *BlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription { + return bc.scope.Track(bc.logsFeed.Subscribe(ch)) +} + +// SubscribeBlockProcessingEvent registers a subscription of bool where true means +// block processing has started while false means it has stopped. +func (bc *BlockChain) SubscribeBlockProcessingEvent(ch chan<- bool) event.Subscription { + return bc.scope.Track(bc.blockProcFeed.Subscribe(ch)) +} + +// SubscribeChainAcceptedEvent registers a subscription of ChainEvent. +func (bc *BlockChain) SubscribeChainAcceptedEvent(ch chan<- ChainEvent) event.Subscription { + return bc.scope.Track(bc.chainAcceptedFeed.Subscribe(ch)) +} + +// SubscribeAcceptedLogsEvent registers a subscription of accepted []*types.Log. +func (bc *BlockChain) SubscribeAcceptedLogsEvent(ch chan<- []*types.Log) event.Subscription { + return bc.scope.Track(bc.logsAcceptedFeed.Subscribe(ch)) +} + +// SubscribeAcceptedTransactionEvent registers a subscription of accepted transactions +func (bc *BlockChain) SubscribeAcceptedTransactionEvent(ch chan<- NewTxsEvent) event.Subscription { + return bc.scope.Track(bc.txAcceptedFeed.Subscribe(ch)) +} diff --git a/core/blockchain_test.go b/core/blockchain_test.go new file mode 100644 index 0000000000..02f3e039d5 --- /dev/null +++ b/core/blockchain_test.go @@ -0,0 +1,250 @@ +// (c) 2020-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package core + +import ( + "testing" + + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" +) + +func TestArchiveBlockChain(t *testing.T) { + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: false, // Archive mode + SnapshotLimit: 256, + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} + +func TestArchiveBlockChainSnapsDisabled(t *testing.T) { + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: false, // Archive mode + SnapshotLimit: 0, // Disable snapshots + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} + +func TestPruningBlockChain(t *testing.T) { + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: true, // Enable pruning + SnapshotLimit: 256, + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} + +func TestPruningBlockChainSnapsDisabled(t *testing.T) { + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: true, // Enable pruning + SnapshotLimit: 0, // Disable snapshots + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} + +type wrappedStateManager struct { + TrieWriter +} + +func (w *wrappedStateManager) Shutdown() error { return nil } + +func TestPruningBlockChainUngracefulShutdown(t *testing.T) { + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: true, // Enable pruning + SnapshotLimit: 256, + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + if err != nil { + return nil, err + } + + // Overwrite state manager, so that Shutdown is not called. + // This tests to ensure that the state manager handles an ungraceful shutdown correctly. + blockchain.stateManager = &wrappedStateManager{TrieWriter: blockchain.stateManager} + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} + +func TestPruningBlockChainUngracefulShutdownSnapsDisabled(t *testing.T) { + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: true, // Enable pruning + SnapshotLimit: 0, // Disable snapshots + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + if err != nil { + return nil, err + } + + // Overwrite state manager, so that Shutdown is not called. + // This tests to ensure that the state manager handles an ungraceful shutdown correctly. + blockchain.stateManager = &wrappedStateManager{TrieWriter: blockchain.stateManager} + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} + +func TestEnableSnapshots(t *testing.T) { + // Set snapshots to be disabled the first time, and then enable them on the restart + snapLimit := 0 + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: true, // Enable pruning + SnapshotLimit: snapLimit, // Disable snapshots + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + if err != nil { + return nil, err + } + snapLimit = 256 + + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} + +func TestCorruptSnapshots(t *testing.T) { + create := func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error) { + // Delete the snapshot block hash and state root to ensure that if we die in between writing a snapshot + // diff layer to disk at any point, we can still recover on restart. + rawdb.DeleteSnapshotBlockHash(db) + rawdb.DeleteSnapshotRoot(db) + // Import the chain. This runs all block validation rules. + blockchain, err := NewBlockChain( + db, + &CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + Pruning: true, // Enable pruning + SnapshotLimit: 256, // Disable snapshots + }, + chainConfig, + dummy.NewEngine(), + vm.Config{}, + lastAcceptedHash, + ) + if err != nil { + return nil, err + } + + return blockchain, err + } + for _, tt := range tests { + t.Run(tt.Name, func(t *testing.T) { + tt.testFunc(t, create) + }) + } +} diff --git a/core/bloom_indexer.go b/core/bloom_indexer.go new file mode 100644 index 0000000000..5c30f42405 --- /dev/null +++ b/core/bloom_indexer.go @@ -0,0 +1,92 @@ +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "context" + "time" + + "github.com/ava-labs/subnet-evm/core/bloombits" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/bitutil" +) + +const ( + // bloomThrottling is the time to wait between processing two consecutive index + // sections. It's useful during chain upgrades to prevent disk overload. + bloomThrottling = 100 * time.Millisecond +) + +// BloomIndexer implements a core.ChainIndexer, building up a rotated bloom bits index +// for the Ethereum header bloom filters, permitting blazing fast filtering. +type BloomIndexer struct { + size uint64 // section size to generate bloombits for + db ethdb.Database // database instance to write index data and metadata into + gen *bloombits.Generator // generator to rotate the bloom bits crating the bloom index + section uint64 // Section is the section number being processed currently + head common.Hash // Head is the hash of the last header processed +} + +// NewBloomIndexer returns a chain indexer that generates bloom bits data for the +// canonical chain for fast logs filtering. +func NewBloomIndexer(db ethdb.Database, size, confirms uint64) *ChainIndexer { + backend := &BloomIndexer{ + db: db, + size: size, + } + table := rawdb.NewTable(db, string(rawdb.BloomBitsIndexPrefix)) + + return NewChainIndexer(db, table, backend, size, confirms, bloomThrottling, "bloombits") +} + +// Reset implements core.ChainIndexerBackend, starting a new bloombits index +// section. +func (b *BloomIndexer) Reset(ctx context.Context, section uint64, lastSectionHead common.Hash) error { + gen, err := bloombits.NewGenerator(uint(b.size)) + b.gen, b.section, b.head = gen, section, common.Hash{} + return err +} + +// Process implements core.ChainIndexerBackend, adding a new header's bloom into +// the index. +func (b *BloomIndexer) Process(ctx context.Context, header *types.Header) error { + b.gen.AddBloom(uint(header.Number.Uint64()-b.section*b.size), header.Bloom) + b.head = header.Hash() + return nil +} + +// Commit implements core.ChainIndexerBackend, finalizing the bloom section and +// writing it out into the database. +func (b *BloomIndexer) Commit() error { + batch := b.db.NewBatch() + for i := 0; i < types.BloomBitLength; i++ { + bits, err := b.gen.Bitset(uint(i)) + if err != nil { + return err + } + rawdb.WriteBloomBits(batch, uint(i), b.section, b.head, bitutil.CompressBytes(bits)) + } + return batch.Write() +} + +// Prune returns an empty error since we don't support pruning here. +func (b *BloomIndexer) Prune(threshold uint64) error { + return nil +} diff --git a/core/bloombits/doc.go b/core/bloombits/doc.go new file mode 100644 index 0000000000..3c805ff4d8 --- /dev/null +++ b/core/bloombits/doc.go @@ -0,0 +1,28 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package bloombits implements bloom filtering on batches of data. +package bloombits diff --git a/core/bloombits/generator.go b/core/bloombits/generator.go new file mode 100644 index 0000000000..deb0ab3eea --- /dev/null +++ b/core/bloombits/generator.go @@ -0,0 +1,108 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bloombits + +import ( + "errors" + + "github.com/ava-labs/subnet-evm/core/types" +) + +var ( + // errSectionOutOfBounds is returned if the user tried to add more bloom filters + // to the batch than available space, or if tries to retrieve above the capacity. + errSectionOutOfBounds = errors.New("section out of bounds") + + // errBloomBitOutOfBounds is returned if the user tried to retrieve specified + // bit bloom above the capacity. + errBloomBitOutOfBounds = errors.New("bloom bit out of bounds") +) + +// Generator takes a number of bloom filters and generates the rotated bloom bits +// to be used for batched filtering. +type Generator struct { + blooms [types.BloomBitLength][]byte // Rotated blooms for per-bit matching + sections uint // Number of sections to batch together + nextSec uint // Next section to set when adding a bloom +} + +// NewGenerator creates a rotated bloom generator that can iteratively fill a +// batched bloom filter's bits. +func NewGenerator(sections uint) (*Generator, error) { + if sections%8 != 0 { + return nil, errors.New("section count not multiple of 8") + } + b := &Generator{sections: sections} + for i := 0; i < types.BloomBitLength; i++ { + b.blooms[i] = make([]byte, sections/8) + } + return b, nil +} + +// AddBloom takes a single bloom filter and sets the corresponding bit column +// in memory accordingly. +func (b *Generator) AddBloom(index uint, bloom types.Bloom) error { + // Make sure we're not adding more bloom filters than our capacity + if b.nextSec >= b.sections { + return errSectionOutOfBounds + } + if b.nextSec != index { + return errors.New("bloom filter with unexpected index") + } + // Rotate the bloom and insert into our collection + byteIndex := b.nextSec / 8 + bitIndex := byte(7 - b.nextSec%8) + for byt := 0; byt < types.BloomByteLength; byt++ { + bloomByte := bloom[types.BloomByteLength-1-byt] + if bloomByte == 0 { + continue + } + base := 8 * byt + b.blooms[base+7][byteIndex] |= ((bloomByte >> 7) & 1) << bitIndex + b.blooms[base+6][byteIndex] |= ((bloomByte >> 6) & 1) << bitIndex + b.blooms[base+5][byteIndex] |= ((bloomByte >> 5) & 1) << bitIndex + b.blooms[base+4][byteIndex] |= ((bloomByte >> 4) & 1) << bitIndex + b.blooms[base+3][byteIndex] |= ((bloomByte >> 3) & 1) << bitIndex + b.blooms[base+2][byteIndex] |= ((bloomByte >> 2) & 1) << bitIndex + b.blooms[base+1][byteIndex] |= ((bloomByte >> 1) & 1) << bitIndex + b.blooms[base][byteIndex] |= (bloomByte & 1) << bitIndex + } + b.nextSec++ + return nil +} + +// Bitset returns the bit vector belonging to the given bit index after all +// blooms have been added. +func (b *Generator) Bitset(idx uint) ([]byte, error) { + if b.nextSec != b.sections { + return nil, errors.New("bloom not fully generated yet") + } + if idx >= types.BloomBitLength { + return nil, errBloomBitOutOfBounds + } + return b.blooms[idx], nil +} diff --git a/core/bloombits/generator_test.go b/core/bloombits/generator_test.go new file mode 100644 index 0000000000..5fe59c4109 --- /dev/null +++ b/core/bloombits/generator_test.go @@ -0,0 +1,109 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bloombits + +import ( + "bytes" + "math/rand" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" +) + +// Tests that batched bloom bits are correctly rotated from the input bloom +// filters. +func TestGenerator(t *testing.T) { + // Generate the input and the rotated output + var input, output [types.BloomBitLength][types.BloomByteLength]byte + + for i := 0; i < types.BloomBitLength; i++ { + for j := 0; j < types.BloomBitLength; j++ { + bit := byte(rand.Int() % 2) + + input[i][j/8] |= bit << byte(7-j%8) + output[types.BloomBitLength-1-j][i/8] |= bit << byte(7-i%8) + } + } + // Crunch the input through the generator and verify the result + gen, err := NewGenerator(types.BloomBitLength) + if err != nil { + t.Fatalf("failed to create bloombit generator: %v", err) + } + for i, bloom := range input { + if err := gen.AddBloom(uint(i), bloom); err != nil { + t.Fatalf("bloom %d: failed to add: %v", i, err) + } + } + for i, want := range output { + have, err := gen.Bitset(uint(i)) + if err != nil { + t.Fatalf("output %d: failed to retrieve bits: %v", i, err) + } + if !bytes.Equal(have, want[:]) { + t.Errorf("output %d: bit vector mismatch have %x, want %x", i, have, want) + } + } +} + +func BenchmarkGenerator(b *testing.B) { + var input [types.BloomBitLength][types.BloomByteLength]byte + b.Run("empty", func(b *testing.B) { + b.ReportAllocs() + b.ResetTimer() + for i := 0; i < b.N; i++ { + // Crunch the input through the generator and verify the result + gen, err := NewGenerator(types.BloomBitLength) + if err != nil { + b.Fatalf("failed to create bloombit generator: %v", err) + } + for j, bloom := range &input { + if err := gen.AddBloom(uint(j), bloom); err != nil { + b.Fatalf("bloom %d: failed to add: %v", i, err) + } + } + } + }) + for i := 0; i < types.BloomBitLength; i++ { + rand.Read(input[i][:]) + } + b.Run("random", func(b *testing.B) { + b.ReportAllocs() + b.ResetTimer() + for i := 0; i < b.N; i++ { + // Crunch the input through the generator and verify the result + gen, err := NewGenerator(types.BloomBitLength) + if err != nil { + b.Fatalf("failed to create bloombit generator: %v", err) + } + for j, bloom := range &input { + if err := gen.AddBloom(uint(j), bloom); err != nil { + b.Fatalf("bloom %d: failed to add: %v", i, err) + } + } + } + }) +} diff --git a/core/bloombits/matcher.go b/core/bloombits/matcher.go new file mode 100644 index 0000000000..07e4dc64a2 --- /dev/null +++ b/core/bloombits/matcher.go @@ -0,0 +1,652 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bloombits + +import ( + "bytes" + "context" + "errors" + "math" + "sort" + "sync" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/common/bitutil" + "github.com/ethereum/go-ethereum/crypto" +) + +// bloomIndexes represents the bit indexes inside the bloom filter that belong +// to some key. +type bloomIndexes [3]uint + +// calcBloomIndexes returns the bloom filter bit indexes belonging to the given key. +func calcBloomIndexes(b []byte) bloomIndexes { + b = crypto.Keccak256(b) + + var idxs bloomIndexes + for i := 0; i < len(idxs); i++ { + idxs[i] = (uint(b[2*i])<<8)&2047 + uint(b[2*i+1]) + } + return idxs +} + +// partialMatches with a non-nil vector represents a section in which some sub- +// matchers have already found potential matches. Subsequent sub-matchers will +// binary AND their matches with this vector. If vector is nil, it represents a +// section to be processed by the first sub-matcher. +type partialMatches struct { + section uint64 + bitset []byte +} + +// Retrieval represents a request for retrieval task assignments for a given +// bit with the given number of fetch elements, or a response for such a request. +// It can also have the actual results set to be used as a delivery data struct. +// +// The contest and error fields are used by the light client to terminate matching +// early if an error is encountered on some path of the pipeline. +type Retrieval struct { + Bit uint + Sections []uint64 + Bitsets [][]byte + + Context context.Context + Error error +} + +// Matcher is a pipelined system of schedulers and logic matchers which perform +// binary AND/OR operations on the bit-streams, creating a stream of potential +// blocks to inspect for data content. +type Matcher struct { + sectionSize uint64 // Size of the data batches to filter on + + filters [][]bloomIndexes // Filter the system is matching for + schedulers map[uint]*scheduler // Retrieval schedulers for loading bloom bits + + retrievers chan chan uint // Retriever processes waiting for bit allocations + counters chan chan uint // Retriever processes waiting for task count reports + retrievals chan chan *Retrieval // Retriever processes waiting for task allocations + deliveries chan *Retrieval // Retriever processes waiting for task response deliveries + + running uint32 // Atomic flag whether a session is live or not +} + +// NewMatcher creates a new pipeline for retrieving bloom bit streams and doing +// address and topic filtering on them. Setting a filter component to `nil` is +// allowed and will result in that filter rule being skipped (OR 0x11...1). +func NewMatcher(sectionSize uint64, filters [][][]byte) *Matcher { + // Create the matcher instance + m := &Matcher{ + sectionSize: sectionSize, + schedulers: make(map[uint]*scheduler), + retrievers: make(chan chan uint), + counters: make(chan chan uint), + retrievals: make(chan chan *Retrieval), + deliveries: make(chan *Retrieval), + } + // Calculate the bloom bit indexes for the groups we're interested in + m.filters = nil + + for _, filter := range filters { + // Gather the bit indexes of the filter rule, special casing the nil filter + if len(filter) == 0 { + continue + } + bloomBits := make([]bloomIndexes, len(filter)) + for i, clause := range filter { + if clause == nil { + bloomBits = nil + break + } + bloomBits[i] = calcBloomIndexes(clause) + } + // Accumulate the filter rules if no nil rule was within + if bloomBits != nil { + m.filters = append(m.filters, bloomBits) + } + } + // For every bit, create a scheduler to load/download the bit vectors + for _, bloomIndexLists := range m.filters { + for _, bloomIndexList := range bloomIndexLists { + for _, bloomIndex := range bloomIndexList { + m.addScheduler(bloomIndex) + } + } + } + return m +} + +// addScheduler adds a bit stream retrieval scheduler for the given bit index if +// it has not existed before. If the bit is already selected for filtering, the +// existing scheduler can be used. +func (m *Matcher) addScheduler(idx uint) { + if _, ok := m.schedulers[idx]; ok { + return + } + m.schedulers[idx] = newScheduler(idx) +} + +// Start starts the matching process and returns a stream of bloom matches in +// a given range of blocks. If there are no more matches in the range, the result +// channel is closed. +func (m *Matcher) Start(ctx context.Context, begin, end uint64, results chan uint64) (*MatcherSession, error) { + // Make sure we're not creating concurrent sessions + if atomic.SwapUint32(&m.running, 1) == 1 { + return nil, errors.New("matcher already running") + } + defer atomic.StoreUint32(&m.running, 0) + + // Initiate a new matching round + session := &MatcherSession{ + matcher: m, + quit: make(chan struct{}), + ctx: ctx, + } + for _, scheduler := range m.schedulers { + scheduler.reset() + } + sink := m.run(begin, end, cap(results), session) + + // Read the output from the result sink and deliver to the user + session.pend.Add(1) + go func() { + defer session.pend.Done() + defer close(results) + + for { + select { + case <-session.quit: + return + + case res, ok := <-sink: + // New match result found + if !ok { + return + } + // Calculate the first and last blocks of the section + sectionStart := res.section * m.sectionSize + + first := sectionStart + if begin > first { + first = begin + } + last := sectionStart + m.sectionSize - 1 + if end < last { + last = end + } + // Iterate over all the blocks in the section and return the matching ones + for i := first; i <= last; i++ { + // Skip the entire byte if no matches are found inside (and we're processing an entire byte!) + next := res.bitset[(i-sectionStart)/8] + if next == 0 { + if i%8 == 0 { + i += 7 + } + continue + } + // Some bit it set, do the actual submatching + if bit := 7 - i%8; next&(1<= req.section }) + requests[req.bit] = append(queue[:index], append([]uint64{req.section}, queue[index:]...)...) + + // If it's a new bit and we have waiting fetchers, allocate to them + if len(queue) == 0 { + assign(req.bit) + } + + case fetcher := <-retrievers: + // New retriever arrived, find the lowest section-ed bit to assign + bit, best := uint(0), uint64(math.MaxUint64) + for idx := range unallocs { + if requests[idx][0] < best { + bit, best = idx, requests[idx][0] + } + } + // Stop tracking this bit (and alloc notifications if no more work is available) + delete(unallocs, bit) + if len(unallocs) == 0 { + retrievers = nil + } + allocs++ + fetcher <- bit + + case fetcher := <-m.counters: + // New task count request arrives, return number of items + fetcher <- uint(len(requests[<-fetcher])) + + case fetcher := <-m.retrievals: + // New fetcher waiting for tasks to retrieve, assign + task := <-fetcher + if want := len(task.Sections); want >= len(requests[task.Bit]) { + task.Sections = requests[task.Bit] + delete(requests, task.Bit) + } else { + task.Sections = append(task.Sections[:0], requests[task.Bit][:want]...) + requests[task.Bit] = append(requests[task.Bit][:0], requests[task.Bit][want:]...) + } + fetcher <- task + + // If anything was left unallocated, try to assign to someone else + if len(requests[task.Bit]) > 0 { + assign(task.Bit) + } + + case result := <-m.deliveries: + // New retrieval task response from fetcher, split out missing sections and + // deliver complete ones + var ( + sections = make([]uint64, 0, len(result.Sections)) + bitsets = make([][]byte, 0, len(result.Bitsets)) + missing = make([]uint64, 0, len(result.Sections)) + ) + for i, bitset := range result.Bitsets { + if len(bitset) == 0 { + missing = append(missing, result.Sections[i]) + continue + } + sections = append(sections, result.Sections[i]) + bitsets = append(bitsets, bitset) + } + m.schedulers[result.Bit].deliver(sections, bitsets) + allocs-- + + // Reschedule missing sections and allocate bit if newly available + if len(missing) > 0 { + queue := requests[result.Bit] + for _, section := range missing { + index := sort.Search(len(queue), func(i int) bool { return queue[i] >= section }) + queue = append(queue[:index], append([]uint64{section}, queue[index:]...)...) + } + requests[result.Bit] = queue + + if len(queue) == len(missing) { + assign(result.Bit) + } + } + + // End the session when all pending deliveries have arrived. + if shutdown == nil && allocs == 0 { + return + } + } + } +} + +// MatcherSession is returned by a started matcher to be used as a terminator +// for the actively running matching operation. +type MatcherSession struct { + matcher *Matcher + + closer sync.Once // Sync object to ensure we only ever close once + quit chan struct{} // Quit channel to request pipeline termination + + ctx context.Context // Context used by the light client to abort filtering + err error // Global error to track retrieval failures deep in the chain + errLock sync.Mutex + + pend sync.WaitGroup +} + +// Close stops the matching process and waits for all subprocesses to terminate +// before returning. The timeout may be used for graceful shutdown, allowing the +// currently running retrievals to complete before this time. +func (s *MatcherSession) Close() { + s.closer.Do(func() { + // Signal termination and wait for all goroutines to tear down + close(s.quit) + s.pend.Wait() + }) +} + +// Error returns any failure encountered during the matching session. +func (s *MatcherSession) Error() error { + s.errLock.Lock() + defer s.errLock.Unlock() + + return s.err +} + +// allocateRetrieval assigns a bloom bit index to a client process that can either +// immediately request and fetch the section contents assigned to this bit or wait +// a little while for more sections to be requested. +func (s *MatcherSession) allocateRetrieval() (uint, bool) { + fetcher := make(chan uint) + + select { + case <-s.quit: + return 0, false + case s.matcher.retrievers <- fetcher: + bit, ok := <-fetcher + return bit, ok + } +} + +// pendingSections returns the number of pending section retrievals belonging to +// the given bloom bit index. +func (s *MatcherSession) pendingSections(bit uint) int { + fetcher := make(chan uint) + + select { + case <-s.quit: + return 0 + case s.matcher.counters <- fetcher: + fetcher <- bit + return int(<-fetcher) + } +} + +// allocateSections assigns all or part of an already allocated bit-task queue +// to the requesting process. +func (s *MatcherSession) allocateSections(bit uint, count int) []uint64 { + fetcher := make(chan *Retrieval) + + select { + case <-s.quit: + return nil + case s.matcher.retrievals <- fetcher: + task := &Retrieval{ + Bit: bit, + Sections: make([]uint64, count), + } + fetcher <- task + return (<-fetcher).Sections + } +} + +// deliverSections delivers a batch of section bit-vectors for a specific bloom +// bit index to be injected into the processing pipeline. +func (s *MatcherSession) deliverSections(bit uint, sections []uint64, bitsets [][]byte) { + s.matcher.deliveries <- &Retrieval{Bit: bit, Sections: sections, Bitsets: bitsets} +} + +// Multiplex polls the matcher session for retrieval tasks and multiplexes it into +// the requested retrieval queue to be serviced together with other sessions. +// +// This method will block for the lifetime of the session. Even after termination +// of the session, any request in-flight need to be responded to! Empty responses +// are fine though in that case. +func (s *MatcherSession) Multiplex(batch int, wait time.Duration, mux chan chan *Retrieval) { + for { + // Allocate a new bloom bit index to retrieve data for, stopping when done + bit, ok := s.allocateRetrieval() + if !ok { + return + } + // Bit allocated, throttle a bit if we're below our batch limit + if s.pendingSections(bit) < batch { + select { + case <-s.quit: + // Session terminating, we can't meaningfully service, abort + s.allocateSections(bit, 0) + s.deliverSections(bit, []uint64{}, [][]byte{}) + return + + case <-time.After(wait): + // Throttling up, fetch whatever's available + } + } + // Allocate as much as we can handle and request servicing + sections := s.allocateSections(bit, batch) + request := make(chan *Retrieval) + + select { + case <-s.quit: + // Session terminating, we can't meaningfully service, abort + s.deliverSections(bit, sections, make([][]byte, len(sections))) + return + + case mux <- request: + // Retrieval accepted, something must arrive before we're aborting + request <- &Retrieval{Bit: bit, Sections: sections, Context: s.ctx} + + result := <-request + if result.Error != nil { + s.errLock.Lock() + s.err = result.Error + s.errLock.Unlock() + s.Close() + } + s.deliverSections(result.Bit, result.Sections, result.Bitsets) + } + } +} diff --git a/core/bloombits/matcher_test.go b/core/bloombits/matcher_test.go new file mode 100644 index 0000000000..09475571b5 --- /dev/null +++ b/core/bloombits/matcher_test.go @@ -0,0 +1,302 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bloombits + +import ( + "context" + "math/rand" + "sync/atomic" + "testing" + "time" + + "github.com/ethereum/go-ethereum/common" +) + +const testSectionSize = 4096 + +// Tests that wildcard filter rules (nil) can be specified and are handled well. +func TestMatcherWildcards(t *testing.T) { + t.Parallel() + matcher := NewMatcher(testSectionSize, [][][]byte{ + {common.Address{}.Bytes(), common.Address{0x01}.Bytes()}, // Default address is not a wildcard + {common.Hash{}.Bytes(), common.Hash{0x01}.Bytes()}, // Default hash is not a wildcard + {common.Hash{0x01}.Bytes()}, // Plain rule, sanity check + {common.Hash{0x01}.Bytes(), nil}, // Wildcard suffix, drop rule + {nil, common.Hash{0x01}.Bytes()}, // Wildcard prefix, drop rule + {nil, nil}, // Wildcard combo, drop rule + {}, // Inited wildcard rule, drop rule + nil, // Proper wildcard rule, drop rule + }) + if len(matcher.filters) != 3 { + t.Fatalf("filter system size mismatch: have %d, want %d", len(matcher.filters), 3) + } + if len(matcher.filters[0]) != 2 { + t.Fatalf("address clause size mismatch: have %d, want %d", len(matcher.filters[0]), 2) + } + if len(matcher.filters[1]) != 2 { + t.Fatalf("combo topic clause size mismatch: have %d, want %d", len(matcher.filters[1]), 2) + } + if len(matcher.filters[2]) != 1 { + t.Fatalf("singletone topic clause size mismatch: have %d, want %d", len(matcher.filters[2]), 1) + } +} + +// Tests the matcher pipeline on a single continuous workflow without interrupts. +func TestMatcherContinuous(t *testing.T) { + t.Parallel() + testMatcherDiffBatches(t, [][]bloomIndexes{{{10, 20, 30}}}, 0, 100000, false, 75) + testMatcherDiffBatches(t, [][]bloomIndexes{{{32, 3125, 100}}, {{40, 50, 10}}}, 0, 100000, false, 81) + testMatcherDiffBatches(t, [][]bloomIndexes{{{4, 8, 11}, {7, 8, 17}}, {{9, 9, 12}, {15, 20, 13}}, {{18, 15, 15}, {12, 10, 4}}}, 0, 10000, false, 36) +} + +// Tests the matcher pipeline on a constantly interrupted and resumed work pattern +// with the aim of ensuring data items are requested only once. +func TestMatcherIntermittent(t *testing.T) { + t.Parallel() + testMatcherDiffBatches(t, [][]bloomIndexes{{{10, 20, 30}}}, 0, 100000, true, 75) + testMatcherDiffBatches(t, [][]bloomIndexes{{{32, 3125, 100}}, {{40, 50, 10}}}, 0, 100000, true, 81) + testMatcherDiffBatches(t, [][]bloomIndexes{{{4, 8, 11}, {7, 8, 17}}, {{9, 9, 12}, {15, 20, 13}}, {{18, 15, 15}, {12, 10, 4}}}, 0, 10000, true, 36) +} + +// Tests the matcher pipeline on random input to hopefully catch anomalies. +func TestMatcherRandom(t *testing.T) { + t.Parallel() + for i := 0; i < 10; i++ { + testMatcherBothModes(t, makeRandomIndexes([]int{1}, 50), 0, 10000, 0) + testMatcherBothModes(t, makeRandomIndexes([]int{3}, 50), 0, 10000, 0) + testMatcherBothModes(t, makeRandomIndexes([]int{2, 2, 2}, 20), 0, 10000, 0) + testMatcherBothModes(t, makeRandomIndexes([]int{5, 5, 5}, 50), 0, 10000, 0) + testMatcherBothModes(t, makeRandomIndexes([]int{4, 4, 4}, 20), 0, 10000, 0) + } +} + +// Tests that the matcher can properly find matches if the starting block is +// shifter from a multiple of 8. This is needed to cover an optimisation with +// bitset matching https://github.com/ethereum/go-ethereum/issues/15309. +func TestMatcherShifted(t *testing.T) { + t.Parallel() + // Block 0 always matches in the tests, skip ahead of first 8 blocks with the + // start to get a potential zero byte in the matcher bitset. + + // To keep the second bitset byte zero, the filter must only match for the first + // time in block 16, so doing an all-16 bit filter should suffice. + + // To keep the starting block non divisible by 8, block number 9 is the first + // that would introduce a shift and not match block 0. + testMatcherBothModes(t, [][]bloomIndexes{{{16, 16, 16}}}, 9, 64, 0) +} + +// Tests that matching on everything doesn't crash (special case internally). +func TestWildcardMatcher(t *testing.T) { + t.Parallel() + testMatcherBothModes(t, nil, 0, 10000, 0) +} + +// makeRandomIndexes generates a random filter system, composed on multiple filter +// criteria, each having one bloom list component for the address and arbitrarily +// many topic bloom list components. +func makeRandomIndexes(lengths []int, max int) [][]bloomIndexes { + res := make([][]bloomIndexes, len(lengths)) + for i, topics := range lengths { + res[i] = make([]bloomIndexes, topics) + for j := 0; j < topics; j++ { + for k := 0; k < len(res[i][j]); k++ { + res[i][j][k] = uint(rand.Intn(max-1) + 2) + } + } + } + return res +} + +// testMatcherDiffBatches runs the given matches test in single-delivery and also +// in batches delivery mode, verifying that all kinds of deliveries are handled +// correctly withn. +func testMatcherDiffBatches(t *testing.T, filter [][]bloomIndexes, start, blocks uint64, intermittent bool, retrievals uint32) { + singleton := testMatcher(t, filter, start, blocks, intermittent, retrievals, 1) + batched := testMatcher(t, filter, start, blocks, intermittent, retrievals, 16) + + if singleton != batched { + t.Errorf("filter = %v blocks = %v intermittent = %v: request count mismatch, %v in signleton vs. %v in batched mode", filter, blocks, intermittent, singleton, batched) + } +} + +// testMatcherBothModes runs the given matcher test in both continuous as well as +// in intermittent mode, verifying that the request counts match each other. +func testMatcherBothModes(t *testing.T, filter [][]bloomIndexes, start, blocks uint64, retrievals uint32) { + continuous := testMatcher(t, filter, start, blocks, false, retrievals, 16) + intermittent := testMatcher(t, filter, start, blocks, true, retrievals, 16) + + if continuous != intermittent { + t.Errorf("filter = %v blocks = %v: request count mismatch, %v in continuous vs. %v in intermittent mode", filter, blocks, continuous, intermittent) + } +} + +// testMatcher is a generic tester to run the given matcher test and return the +// number of requests made for cross validation between different modes. +func testMatcher(t *testing.T, filter [][]bloomIndexes, start, blocks uint64, intermittent bool, retrievals uint32, maxReqCount int) uint32 { + // Create a new matcher an simulate our explicit random bitsets + matcher := NewMatcher(testSectionSize, nil) + matcher.filters = filter + + for _, rule := range filter { + for _, topic := range rule { + for _, bit := range topic { + matcher.addScheduler(bit) + } + } + } + // Track the number of retrieval requests made + var requested uint32 + + // Start the matching session for the filter and the retriever goroutines + quit := make(chan struct{}) + matches := make(chan uint64, 16) + + session, err := matcher.Start(context.Background(), start, blocks-1, matches) + if err != nil { + t.Fatalf("failed to stat matcher session: %v", err) + } + startRetrievers(session, quit, &requested, maxReqCount) + + // Iterate over all the blocks and verify that the pipeline produces the correct matches + for i := start; i < blocks; i++ { + if expMatch3(filter, i) { + match, ok := <-matches + if !ok { + t.Errorf("filter = %v blocks = %v intermittent = %v: expected #%v, results channel closed", filter, blocks, intermittent, i) + return 0 + } + if match != i { + t.Errorf("filter = %v blocks = %v intermittent = %v: expected #%v, got #%v", filter, blocks, intermittent, i, match) + } + // If we're testing intermittent mode, abort and restart the pipeline + if intermittent { + session.Close() + close(quit) + + quit = make(chan struct{}) + matches = make(chan uint64, 16) + + session, err = matcher.Start(context.Background(), i+1, blocks-1, matches) + if err != nil { + t.Fatalf("failed to stat matcher session: %v", err) + } + startRetrievers(session, quit, &requested, maxReqCount) + } + } + } + // Ensure the result channel is torn down after the last block + match, ok := <-matches + if ok { + t.Errorf("filter = %v blocks = %v intermittent = %v: expected closed channel, got #%v", filter, blocks, intermittent, match) + } + // Clean up the session and ensure we match the expected retrieval count + session.Close() + close(quit) + + if retrievals != 0 && requested != retrievals { + t.Errorf("filter = %v blocks = %v intermittent = %v: request count mismatch, have #%v, want #%v", filter, blocks, intermittent, requested, retrievals) + } + return requested +} + +// startRetrievers starts a batch of goroutines listening for section requests +// and serving them. +func startRetrievers(session *MatcherSession, quit chan struct{}, retrievals *uint32, batch int) { + requests := make(chan chan *Retrieval) + + for i := 0; i < 10; i++ { + // Start a multiplexer to test multiple threaded execution + go session.Multiplex(batch, 100*time.Microsecond, requests) + + // Start a services to match the above multiplexer + go func() { + for { + // Wait for a service request or a shutdown + select { + case <-quit: + return + + case request := <-requests: + task := <-request + + task.Bitsets = make([][]byte, len(task.Sections)) + for i, section := range task.Sections { + if rand.Int()%4 != 0 { // Handle occasional missing deliveries + task.Bitsets[i] = generateBitset(task.Bit, section) + atomic.AddUint32(retrievals, 1) + } + } + request <- task + } + } + }() + } +} + +// generateBitset generates the rotated bitset for the given bloom bit and section +// numbers. +func generateBitset(bit uint, section uint64) []byte { + bitset := make([]byte, testSectionSize/8) + for i := 0; i < len(bitset); i++ { + for b := 0; b < 8; b++ { + blockIdx := section*testSectionSize + uint64(i*8+b) + bitset[i] += bitset[i] + if (blockIdx % uint64(bit)) == 0 { + bitset[i]++ + } + } + } + return bitset +} + +func expMatch1(filter bloomIndexes, i uint64) bool { + for _, ii := range filter { + if (i % uint64(ii)) != 0 { + return false + } + } + return true +} + +func expMatch2(filter []bloomIndexes, i uint64) bool { + for _, ii := range filter { + if expMatch1(ii, i) { + return true + } + } + return false +} + +func expMatch3(filter [][]bloomIndexes, i uint64) bool { + for _, ii := range filter { + if !expMatch2(ii, i) { + return false + } + } + return true +} diff --git a/core/bloombits/scheduler.go b/core/bloombits/scheduler.go new file mode 100644 index 0000000000..c502e401f6 --- /dev/null +++ b/core/bloombits/scheduler.go @@ -0,0 +1,191 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bloombits + +import ( + "sync" +) + +// request represents a bloom retrieval task to prioritize and pull from the local +// database or remotely from the network. +type request struct { + section uint64 // Section index to retrieve the a bit-vector from + bit uint // Bit index within the section to retrieve the vector of +} + +// response represents the state of a requested bit-vector through a scheduler. +type response struct { + cached []byte // Cached bits to dedup multiple requests + done chan struct{} // Channel to allow waiting for completion +} + +// scheduler handles the scheduling of bloom-filter retrieval operations for +// entire section-batches belonging to a single bloom bit. Beside scheduling the +// retrieval operations, this struct also deduplicates the requests and caches +// the results to minimize network/database overhead even in complex filtering +// scenarios. +type scheduler struct { + bit uint // Index of the bit in the bloom filter this scheduler is responsible for + responses map[uint64]*response // Currently pending retrieval requests or already cached responses + lock sync.Mutex // Lock protecting the responses from concurrent access +} + +// newScheduler creates a new bloom-filter retrieval scheduler for a specific +// bit index. +func newScheduler(idx uint) *scheduler { + return &scheduler{ + bit: idx, + responses: make(map[uint64]*response), + } +} + +// run creates a retrieval pipeline, receiving section indexes from sections and +// returning the results in the same order through the done channel. Concurrent +// runs of the same scheduler are allowed, leading to retrieval task deduplication. +func (s *scheduler) run(sections chan uint64, dist chan *request, done chan []byte, quit chan struct{}, wg *sync.WaitGroup) { + // Create a forwarder channel between requests and responses of the same size as + // the distribution channel (since that will block the pipeline anyway). + pend := make(chan uint64, cap(dist)) + + // Start the pipeline schedulers to forward between user -> distributor -> user + wg.Add(2) + go s.scheduleRequests(sections, dist, pend, quit, wg) + go s.scheduleDeliveries(pend, done, quit, wg) +} + +// reset cleans up any leftovers from previous runs. This is required before a +// restart to ensure the no previously requested but never delivered state will +// cause a lockup. +func (s *scheduler) reset() { + s.lock.Lock() + defer s.lock.Unlock() + + for section, res := range s.responses { + if res.cached == nil { + delete(s.responses, section) + } + } +} + +// scheduleRequests reads section retrieval requests from the input channel, +// deduplicates the stream and pushes unique retrieval tasks into the distribution +// channel for a database or network layer to honour. +func (s *scheduler) scheduleRequests(reqs chan uint64, dist chan *request, pend chan uint64, quit chan struct{}, wg *sync.WaitGroup) { + // Clean up the goroutine and pipeline when done + defer wg.Done() + defer close(pend) + + // Keep reading and scheduling section requests + for { + select { + case <-quit: + return + + case section, ok := <-reqs: + // New section retrieval requested + if !ok { + return + } + // Deduplicate retrieval requests + unique := false + + s.lock.Lock() + if s.responses[section] == nil { + s.responses[section] = &response{ + done: make(chan struct{}), + } + unique = true + } + s.lock.Unlock() + + // Schedule the section for retrieval and notify the deliverer to expect this section + if unique { + select { + case <-quit: + return + case dist <- &request{bit: s.bit, section: section}: + } + } + select { + case <-quit: + return + case pend <- section: + } + } + } +} + +// scheduleDeliveries reads section acceptance notifications and waits for them +// to be delivered, pushing them into the output data buffer. +func (s *scheduler) scheduleDeliveries(pend chan uint64, done chan []byte, quit chan struct{}, wg *sync.WaitGroup) { + // Clean up the goroutine and pipeline when done + defer wg.Done() + defer close(done) + + // Keep reading notifications and scheduling deliveries + for { + select { + case <-quit: + return + + case idx, ok := <-pend: + // New section retrieval pending + if !ok { + return + } + // Wait until the request is honoured + s.lock.Lock() + res := s.responses[idx] + s.lock.Unlock() + + select { + case <-quit: + return + case <-res.done: + } + // Deliver the result + select { + case <-quit: + return + case done <- res.cached: + } + } + } +} + +// deliver is called by the request distributor when a reply to a request arrives. +func (s *scheduler) deliver(sections []uint64, data [][]byte) { + s.lock.Lock() + defer s.lock.Unlock() + + for i, section := range sections { + if res := s.responses[section]; res != nil && res.cached == nil { // Avoid non-requests and double deliveries + res.cached = data[i] + close(res.done) + } + } +} diff --git a/core/bloombits/scheduler_test.go b/core/bloombits/scheduler_test.go new file mode 100644 index 0000000000..bbe149f49a --- /dev/null +++ b/core/bloombits/scheduler_test.go @@ -0,0 +1,116 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package bloombits + +import ( + "bytes" + "math/big" + "math/rand" + "sync" + "sync/atomic" + "testing" + "time" +) + +// Tests that the scheduler can deduplicate and forward retrieval requests to +// underlying fetchers and serve responses back, irrelevant of the concurrency +// of the requesting clients or serving data fetchers. +func TestSchedulerSingleClientSingleFetcher(t *testing.T) { testScheduler(t, 1, 1, 5000) } +func TestSchedulerSingleClientMultiFetcher(t *testing.T) { testScheduler(t, 1, 10, 5000) } +func TestSchedulerMultiClientSingleFetcher(t *testing.T) { testScheduler(t, 10, 1, 5000) } +func TestSchedulerMultiClientMultiFetcher(t *testing.T) { testScheduler(t, 10, 10, 5000) } + +func testScheduler(t *testing.T, clients int, fetchers int, requests int) { + t.Parallel() + f := newScheduler(0) + + // Create a batch of handler goroutines that respond to bloom bit requests and + // deliver them to the scheduler. + var fetchPend sync.WaitGroup + fetchPend.Add(fetchers) + defer fetchPend.Wait() + + fetch := make(chan *request, 16) + defer close(fetch) + + var delivered uint32 + for i := 0; i < fetchers; i++ { + go func() { + defer fetchPend.Done() + + for req := range fetch { + time.Sleep(time.Duration(rand.Intn(int(100 * time.Microsecond)))) + atomic.AddUint32(&delivered, 1) + + f.deliver([]uint64{ + req.section + uint64(requests), // Non-requested data (ensure it doesn't go out of bounds) + req.section, // Requested data + req.section, // Duplicated data (ensure it doesn't double close anything) + }, [][]byte{ + {}, + new(big.Int).SetUint64(req.section).Bytes(), + new(big.Int).SetUint64(req.section).Bytes(), + }) + } + }() + } + // Start a batch of goroutines to concurrently run scheduling tasks + quit := make(chan struct{}) + + var pend sync.WaitGroup + pend.Add(clients) + + for i := 0; i < clients; i++ { + go func() { + defer pend.Done() + + in := make(chan uint64, 16) + out := make(chan []byte, 16) + + f.run(in, fetch, out, quit, &pend) + + go func() { + for j := 0; j < requests; j++ { + in <- uint64(j) + } + close(in) + }() + b := new(big.Int) + for j := 0; j < requests; j++ { + bits := <-out + if want := b.SetUint64(uint64(j)).Bytes(); !bytes.Equal(bits, want) { + t.Errorf("vector %d: delivered content mismatch: have %x, want %x", j, bits, want) + } + } + }() + } + pend.Wait() + + if have := atomic.LoadUint32(&delivered); int(have) != requests { + t.Errorf("request count mismatch: have %v, want %v", have, requests) + } +} diff --git a/core/chain_indexer.go b/core/chain_indexer.go new file mode 100644 index 0000000000..df8d6d9295 --- /dev/null +++ b/core/chain_indexer.go @@ -0,0 +1,532 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "context" + "encoding/binary" + "fmt" + "sync" + "sync/atomic" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" +) + +// ChainIndexerBackend defines the methods needed to process chain segments in +// the background and write the segment results into the database. These can be +// used to create filter blooms or CHTs. +type ChainIndexerBackend interface { + // Reset initiates the processing of a new chain segment, potentially terminating + // any partially completed operations (in case of a reorg). + Reset(ctx context.Context, section uint64, prevHead common.Hash) error + + // Process crunches through the next header in the chain segment. The caller + // will ensure a sequential order of headers. + Process(ctx context.Context, header *types.Header) error + + // Commit finalizes the section metadata and stores it into the database. + Commit() error + + // Prune deletes the chain index older than the given threshold. + Prune(threshold uint64) error +} + +// ChainIndexerChain interface is used for connecting the indexer to a blockchain +type ChainIndexerChain interface { + // CurrentHeader retrieves the latest locally known header. + CurrentHeader() *types.Header + + // SubscribeChainHeadEvent subscribes to new head header notifications. + SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription +} + +// ChainIndexer does a post-processing job for equally sized sections of the +// canonical chain (like BlooomBits and CHT structures). A ChainIndexer is +// connected to the blockchain through the event system by starting a +// ChainHeadEventLoop in a goroutine. +// +// Further child ChainIndexers can be added which use the output of the parent +// section indexer. These child indexers receive new head notifications only +// after an entire section has been finished or in case of rollbacks that might +// affect already finished sections. +type ChainIndexer struct { + chainDb ethdb.Database // Chain database to index the data from + indexDb ethdb.Database // Prefixed table-view of the db to write index metadata into + backend ChainIndexerBackend // Background processor generating the index data content + children []*ChainIndexer // Child indexers to cascade chain updates to + + active uint32 // Flag whether the event loop was started + update chan struct{} // Notification channel that headers should be processed + quit chan chan error // Quit channel to tear down running goroutines + ctx context.Context + ctxCancel func() + + sectionSize uint64 // Number of blocks in a single chain segment to process + confirmsReq uint64 // Number of confirmations before processing a completed segment + + storedSections uint64 // Number of sections successfully indexed into the database + knownSections uint64 // Number of sections known to be complete (block wise) + cascadedHead uint64 // Block number of the last completed section cascaded to subindexers + + checkpointSections uint64 // Number of sections covered by the checkpoint + checkpointHead common.Hash // Section head belonging to the checkpoint + + throttling time.Duration // Disk throttling to prevent a heavy upgrade from hogging resources + + log log.Logger + lock sync.Mutex +} + +// NewChainIndexer creates a new chain indexer to do background processing on +// chain segments of a given size after certain number of confirmations passed. +// The throttling parameter might be used to prevent database thrashing. +func NewChainIndexer(chainDb ethdb.Database, indexDb ethdb.Database, backend ChainIndexerBackend, section, confirm uint64, throttling time.Duration, kind string) *ChainIndexer { + c := &ChainIndexer{ + chainDb: chainDb, + indexDb: indexDb, + backend: backend, + update: make(chan struct{}, 1), + quit: make(chan chan error), + sectionSize: section, + confirmsReq: confirm, + throttling: throttling, + log: log.New("type", kind), + } + // Initialize database dependent fields and start the updater + c.loadValidSections() + c.ctx, c.ctxCancel = context.WithCancel(context.Background()) + + go c.updateLoop() + + return c +} + +// AddCheckpoint adds a checkpoint. Sections are never processed and the chain +// is not expected to be available before this point. The indexer assumes that +// the backend has sufficient information available to process subsequent sections. +// +// Note: knownSections == 0 and storedSections == checkpointSections until +// syncing reaches the checkpoint +func (c *ChainIndexer) AddCheckpoint(section uint64, shead common.Hash) { + c.lock.Lock() + defer c.lock.Unlock() + + // Short circuit if the given checkpoint is below than local's. + if c.checkpointSections >= section+1 || section < c.storedSections { + return + } + c.checkpointSections = section + 1 + c.checkpointHead = shead + + c.setSectionHead(section, shead) + c.setValidSections(section + 1) +} + +// Start creates a goroutine to feed chain head events into the indexer for +// cascading background processing. Children do not need to be started, they +// are notified about new events by their parents. +func (c *ChainIndexer) Start(chain ChainIndexerChain) { + events := make(chan ChainHeadEvent, 10) + sub := chain.SubscribeChainHeadEvent(events) + + go c.eventLoop(chain.CurrentHeader(), events, sub) +} + +// Close tears down all goroutines belonging to the indexer and returns any error +// that might have occurred internally. +func (c *ChainIndexer) Close() error { + var errs []error + + c.ctxCancel() + + // Tear down the primary update loop + errc := make(chan error) + c.quit <- errc + if err := <-errc; err != nil { + errs = append(errs, err) + } + // If needed, tear down the secondary event loop + if atomic.LoadUint32(&c.active) != 0 { + c.quit <- errc + if err := <-errc; err != nil { + errs = append(errs, err) + } + } + // Close all children + for _, child := range c.children { + if err := child.Close(); err != nil { + errs = append(errs, err) + } + } + // Return any failures + switch { + case len(errs) == 0: + return nil + + case len(errs) == 1: + return errs[0] + + default: + return fmt.Errorf("%v", errs) + } +} + +// eventLoop is a secondary - optional - event loop of the indexer which is only +// started for the outermost indexer to push chain head events into a processing +// queue. +func (c *ChainIndexer) eventLoop(currentHeader *types.Header, events chan ChainHeadEvent, sub event.Subscription) { + // Mark the chain indexer as active, requiring an additional teardown + atomic.StoreUint32(&c.active, 1) + + defer sub.Unsubscribe() + + // Fire the initial new head event to start any outstanding processing + c.newHead(currentHeader.Number.Uint64(), false) + + var ( + prevHeader = currentHeader + prevHash = currentHeader.Hash() + ) + for { + select { + case errc := <-c.quit: + // Chain indexer terminating, report no failure and abort + errc <- nil + return + + case ev, ok := <-events: + // Received a new event, ensure it's not nil (closing) and update + if !ok { + errc := <-c.quit + errc <- nil + return + } + header := ev.Block.Header() + if header.ParentHash != prevHash { + // Reorg to the common ancestor if needed (might not exist in light sync mode, skip reorg then) + // TODO(karalabe, zsfelfoldi): This seems a bit brittle, can we detect this case explicitly? + + if rawdb.ReadCanonicalHash(c.chainDb, prevHeader.Number.Uint64()) != prevHash { + if h := rawdb.FindCommonAncestor(c.chainDb, prevHeader, header); h != nil { + c.newHead(h.Number.Uint64(), true) + } + } + } + c.newHead(header.Number.Uint64(), false) + + prevHeader, prevHash = header, header.Hash() + } + } +} + +// newHead notifies the indexer about new chain heads and/or reorgs. +func (c *ChainIndexer) newHead(head uint64, reorg bool) { + c.lock.Lock() + defer c.lock.Unlock() + + // If a reorg happened, invalidate all sections until that point + if reorg { + // Revert the known section number to the reorg point + known := (head + 1) / c.sectionSize + stored := known + if known < c.checkpointSections { + known = 0 + } + if stored < c.checkpointSections { + stored = c.checkpointSections + } + if known < c.knownSections { + c.knownSections = known + } + // Revert the stored sections from the database to the reorg point + if stored < c.storedSections { + c.setValidSections(stored) + } + // Update the new head number to the finalized section end and notify children + head = known * c.sectionSize + + if head < c.cascadedHead { + c.cascadedHead = head + for _, child := range c.children { + child.newHead(c.cascadedHead, true) + } + } + return + } + // No reorg, calculate the number of newly known sections and update if high enough + var sections uint64 + if head >= c.confirmsReq { + sections = (head + 1 - c.confirmsReq) / c.sectionSize + if sections < c.checkpointSections { + sections = 0 + } + if sections > c.knownSections { + if c.knownSections < c.checkpointSections { + // syncing reached the checkpoint, verify section head + syncedHead := rawdb.ReadCanonicalHash(c.chainDb, c.checkpointSections*c.sectionSize-1) + if syncedHead != c.checkpointHead { + c.log.Error("Synced chain does not match checkpoint", "number", c.checkpointSections*c.sectionSize-1, "expected", c.checkpointHead, "synced", syncedHead) + return + } + } + c.knownSections = sections + + select { + case c.update <- struct{}{}: + default: + } + } + } +} + +// updateLoop is the main event loop of the indexer which pushes chain segments +// down into the processing backend. +func (c *ChainIndexer) updateLoop() { + var ( + updating bool + updated time.Time + ) + + for { + select { + case errc := <-c.quit: + // Chain indexer terminating, report no failure and abort + errc <- nil + return + + case <-c.update: + // Section headers completed (or rolled back), update the index + c.lock.Lock() + if c.knownSections > c.storedSections { + // Periodically print an upgrade log message to the user + if time.Since(updated) > 8*time.Second { + if c.knownSections > c.storedSections+1 { + updating = true + c.log.Info("Upgrading chain index", "percentage", c.storedSections*100/c.knownSections) + } + updated = time.Now() + } + // Cache the current section count and head to allow unlocking the mutex + c.verifyLastHead() + section := c.storedSections + var oldHead common.Hash + if section > 0 { + oldHead = c.SectionHead(section - 1) + } + // Process the newly defined section in the background + c.lock.Unlock() + newHead, err := c.processSection(section, oldHead) + if err != nil { + select { + case <-c.ctx.Done(): + <-c.quit <- nil + return + default: + } + c.log.Error("Section processing failed", "error", err) + } + c.lock.Lock() + + // If processing succeeded and no reorgs occurred, mark the section completed + if err == nil && (section == 0 || oldHead == c.SectionHead(section-1)) { + c.setSectionHead(section, newHead) + c.setValidSections(section + 1) + if c.storedSections == c.knownSections && updating { + updating = false + c.log.Info("Finished upgrading chain index") + } + c.cascadedHead = c.storedSections*c.sectionSize - 1 + for _, child := range c.children { + c.log.Trace("Cascading chain index update", "head", c.cascadedHead) + child.newHead(c.cascadedHead, false) + } + } else { + // If processing failed, don't retry until further notification + c.log.Debug("Chain index processing failed", "section", section, "err", err) + c.verifyLastHead() + c.knownSections = c.storedSections + } + } + // If there are still further sections to process, reschedule + if c.knownSections > c.storedSections { + time.AfterFunc(c.throttling, func() { + select { + case c.update <- struct{}{}: + default: + } + }) + } + c.lock.Unlock() + } + } +} + +// processSection processes an entire section by calling backend functions while +// ensuring the continuity of the passed headers. Since the chain mutex is not +// held while processing, the continuity can be broken by a long reorg, in which +// case the function returns with an error. +func (c *ChainIndexer) processSection(section uint64, lastHead common.Hash) (common.Hash, error) { + c.log.Trace("Processing new chain section", "section", section) + + // Reset and partial processing + if err := c.backend.Reset(c.ctx, section, lastHead); err != nil { + c.setValidSections(0) + return common.Hash{}, err + } + + for number := section * c.sectionSize; number < (section+1)*c.sectionSize; number++ { + hash := rawdb.ReadCanonicalHash(c.chainDb, number) + if hash == (common.Hash{}) { + return common.Hash{}, fmt.Errorf("canonical block #%d unknown", number) + } + header := rawdb.ReadHeader(c.chainDb, hash, number) + if header == nil { + return common.Hash{}, fmt.Errorf("block #%d [%x..] not found", number, hash[:4]) + } else if header.ParentHash != lastHead { + return common.Hash{}, fmt.Errorf("chain reorged during section processing") + } + if err := c.backend.Process(c.ctx, header); err != nil { + return common.Hash{}, err + } + lastHead = header.Hash() + } + if err := c.backend.Commit(); err != nil { + return common.Hash{}, err + } + return lastHead, nil +} + +// verifyLastHead compares last stored section head with the corresponding block hash in the +// actual canonical chain and rolls back reorged sections if necessary to ensure that stored +// sections are all valid +func (c *ChainIndexer) verifyLastHead() { + for c.storedSections > 0 && c.storedSections > c.checkpointSections { + if c.SectionHead(c.storedSections-1) == rawdb.ReadCanonicalHash(c.chainDb, c.storedSections*c.sectionSize-1) { + return + } + c.setValidSections(c.storedSections - 1) + } +} + +// Sections returns the number of processed sections maintained by the indexer +// and also the information about the last header indexed for potential canonical +// verifications. +func (c *ChainIndexer) Sections() (uint64, uint64, common.Hash) { + c.lock.Lock() + defer c.lock.Unlock() + + c.verifyLastHead() + return c.storedSections, c.storedSections*c.sectionSize - 1, c.SectionHead(c.storedSections - 1) +} + +// AddChildIndexer adds a child ChainIndexer that can use the output of this one +func (c *ChainIndexer) AddChildIndexer(indexer *ChainIndexer) { + if indexer == c { + panic("can't add indexer as a child of itself") + } + c.lock.Lock() + defer c.lock.Unlock() + + c.children = append(c.children, indexer) + + // Cascade any pending updates to new children too + sections := c.storedSections + if c.knownSections < sections { + // if a section is "stored" but not "known" then it is a checkpoint without + // available chain data so we should not cascade it yet + sections = c.knownSections + } + if sections > 0 { + indexer.newHead(sections*c.sectionSize-1, false) + } +} + +// Prune deletes all chain data older than given threshold. +func (c *ChainIndexer) Prune(threshold uint64) error { + return c.backend.Prune(threshold) +} + +// loadValidSections reads the number of valid sections from the index database +// and caches is into the local state. +func (c *ChainIndexer) loadValidSections() { + data, _ := c.indexDb.Get([]byte("count")) + if len(data) == 8 { + c.storedSections = binary.BigEndian.Uint64(data) + } +} + +// setValidSections writes the number of valid sections to the index database +func (c *ChainIndexer) setValidSections(sections uint64) { + // Set the current number of valid sections in the database + var data [8]byte + binary.BigEndian.PutUint64(data[:], sections) + c.indexDb.Put([]byte("count"), data[:]) + + // Remove any reorged sections, caching the valids in the mean time + for c.storedSections > sections { + c.storedSections-- + c.removeSectionHead(c.storedSections) + } + c.storedSections = sections // needed if new > old +} + +// SectionHead retrieves the last block hash of a processed section from the +// index database. +func (c *ChainIndexer) SectionHead(section uint64) common.Hash { + var data [8]byte + binary.BigEndian.PutUint64(data[:], section) + + hash, _ := c.indexDb.Get(append([]byte("shead"), data[:]...)) + if len(hash) == len(common.Hash{}) { + return common.BytesToHash(hash) + } + return common.Hash{} +} + +// setSectionHead writes the last block hash of a processed section to the index +// database. +func (c *ChainIndexer) setSectionHead(section uint64, hash common.Hash) { + var data [8]byte + binary.BigEndian.PutUint64(data[:], section) + + c.indexDb.Put(append([]byte("shead"), data[:]...), hash.Bytes()) +} + +// removeSectionHead removes the reference to a processed section from the index +// database. +func (c *ChainIndexer) removeSectionHead(section uint64) { + var data [8]byte + binary.BigEndian.PutUint64(data[:], section) + + c.indexDb.Delete(append([]byte("shead"), data[:]...)) +} diff --git a/core/chain_indexer_test.go b/core/chain_indexer_test.go new file mode 100644 index 0000000000..9664bebc8a --- /dev/null +++ b/core/chain_indexer_test.go @@ -0,0 +1,255 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "context" + "errors" + "fmt" + "math/big" + "math/rand" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// Runs multiple tests with randomized parameters. +func TestChainIndexerSingle(t *testing.T) { + for i := 0; i < 10; i++ { + testChainIndexer(t, 1) + } +} + +// Runs multiple tests with randomized parameters and different number of +// chain backends. +func TestChainIndexerWithChildren(t *testing.T) { + for i := 2; i < 8; i++ { + testChainIndexer(t, i) + } +} + +// testChainIndexer runs a test with either a single chain indexer or a chain of +// multiple backends. The section size and required confirmation count parameters +// are randomized. +func testChainIndexer(t *testing.T, count int) { + db := rawdb.NewMemoryDatabase() + defer db.Close() + + // Create a chain of indexers and ensure they all report empty + backends := make([]*testChainIndexBackend, count) + for i := 0; i < count; i++ { + var ( + sectionSize = uint64(rand.Intn(100) + 1) + confirmsReq = uint64(rand.Intn(10)) + ) + backends[i] = &testChainIndexBackend{t: t, processCh: make(chan uint64)} + backends[i].indexer = NewChainIndexer(db, rawdb.NewTable(db, string([]byte{byte(i)})), backends[i], sectionSize, confirmsReq, 0, fmt.Sprintf("indexer-%d", i)) + + if sections, _, _ := backends[i].indexer.Sections(); sections != 0 { + t.Fatalf("Canonical section count mismatch: have %v, want %v", sections, 0) + } + if i > 0 { + backends[i-1].indexer.AddChildIndexer(backends[i].indexer) + } + } + defer backends[0].indexer.Close() // parent indexer shuts down children + // notify pings the root indexer about a new head or reorg, then expect + // processed blocks if a section is processable + notify := func(headNum, failNum uint64, reorg bool) { + backends[0].indexer.newHead(headNum, reorg) + if reorg { + for _, backend := range backends { + headNum = backend.reorg(headNum) + backend.assertSections() + } + return + } + var cascade bool + for _, backend := range backends { + headNum, cascade = backend.assertBlocks(headNum, failNum) + if !cascade { + break + } + backend.assertSections() + } + } + // inject inserts a new random canonical header into the database directly + inject := func(number uint64) { + header := &types.Header{Number: big.NewInt(int64(number)), Extra: big.NewInt(rand.Int63()).Bytes()} + if number > 0 { + header.ParentHash = rawdb.ReadCanonicalHash(db, number-1) + } + rawdb.WriteHeader(db, header) + rawdb.WriteCanonicalHash(db, header.Hash(), number) + } + // Start indexer with an already existing chain + for i := uint64(0); i <= 100; i++ { + inject(i) + } + notify(100, 100, false) + + // Add new blocks one by one + for i := uint64(101); i <= 1000; i++ { + inject(i) + notify(i, i, false) + } + // Do a reorg + notify(500, 500, true) + + // Create new fork + for i := uint64(501); i <= 1000; i++ { + inject(i) + notify(i, i, false) + } + for i := uint64(1001); i <= 1500; i++ { + inject(i) + } + // Failed processing scenario where less blocks are available than notified + notify(2000, 1500, false) + + // Notify about a reorg (which could have caused the missing blocks if happened during processing) + notify(1500, 1500, true) + + // Create new fork + for i := uint64(1501); i <= 2000; i++ { + inject(i) + notify(i, i, false) + } +} + +// testChainIndexBackend implements ChainIndexerBackend +type testChainIndexBackend struct { + t *testing.T + indexer *ChainIndexer + section, headerCnt, stored uint64 + processCh chan uint64 +} + +// assertSections verifies if a chain indexer has the correct number of section. +func (b *testChainIndexBackend) assertSections() { + // Keep trying for 3 seconds if it does not match + var sections uint64 + for i := 0; i < 300; i++ { + sections, _, _ = b.indexer.Sections() + if sections == b.stored { + return + } + time.Sleep(10 * time.Millisecond) + } + b.t.Fatalf("Canonical section count mismatch: have %v, want %v", sections, b.stored) +} + +// assertBlocks expects processing calls after new blocks have arrived. If the +// failNum < headNum then we are simulating a scenario where a reorg has happened +// after the processing has started and the processing of a section fails. +func (b *testChainIndexBackend) assertBlocks(headNum, failNum uint64) (uint64, bool) { + var sections uint64 + if headNum >= b.indexer.confirmsReq { + sections = (headNum + 1 - b.indexer.confirmsReq) / b.indexer.sectionSize + if sections > b.stored { + // expect processed blocks + for expectd := b.stored * b.indexer.sectionSize; expectd < sections*b.indexer.sectionSize; expectd++ { + if expectd > failNum { + // rolled back after processing started, no more process calls expected + // wait until updating is done to make sure that processing actually fails + var updating bool + for i := 0; i < 300; i++ { + b.indexer.lock.Lock() + updating = b.indexer.knownSections > b.indexer.storedSections + b.indexer.lock.Unlock() + if !updating { + break + } + time.Sleep(10 * time.Millisecond) + } + if updating { + b.t.Fatalf("update did not finish") + } + sections = expectd / b.indexer.sectionSize + break + } + select { + case <-time.After(10 * time.Second): + b.t.Fatalf("Expected processed block #%d, got nothing", expectd) + case processed := <-b.processCh: + if processed != expectd { + b.t.Errorf("Expected processed block #%d, got #%d", expectd, processed) + } + } + } + b.stored = sections + } + } + if b.stored == 0 { + return 0, false + } + return b.stored*b.indexer.sectionSize - 1, true +} + +func (b *testChainIndexBackend) reorg(headNum uint64) uint64 { + firstChanged := (headNum + 1) / b.indexer.sectionSize + if firstChanged < b.stored { + b.stored = firstChanged + } + return b.stored * b.indexer.sectionSize +} + +func (b *testChainIndexBackend) Reset(ctx context.Context, section uint64, prevHead common.Hash) error { + b.section = section + b.headerCnt = 0 + return nil +} + +func (b *testChainIndexBackend) Process(ctx context.Context, header *types.Header) error { + b.headerCnt++ + if b.headerCnt > b.indexer.sectionSize { + b.t.Error("Processing too many headers") + } + select { + case <-time.After(10 * time.Second): + b.t.Error("Unexpected call to Process") + // Can't use Fatal since this is not the test's goroutine. + // Returning error stops the chainIndexer's updateLoop + return errors.New("Unexpected call to Process") + case b.processCh <- header.Number.Uint64(): + } + return nil +} + +func (b *testChainIndexBackend) Commit() error { + if b.headerCnt != b.indexer.sectionSize { + b.t.Error("Not enough headers processed") + } + return nil +} + +func (b *testChainIndexBackend) Prune(threshold uint64) error { + return nil +} diff --git a/core/chain_makers.go b/core/chain_makers.go new file mode 100644 index 0000000000..c46981c748 --- /dev/null +++ b/core/chain_makers.go @@ -0,0 +1,310 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" +) + +// BlockGen creates blocks for testing. +// See GenerateChain for a detailed explanation. +type BlockGen struct { + i int + parent *types.Block + chain []*types.Block + header *types.Header + statedb *state.StateDB + + gasPool *GasPool + txs []*types.Transaction + receipts []*types.Receipt + uncles []*types.Header + + config *params.ChainConfig + engine consensus.Engine +} + +// SetCoinbase sets the coinbase of the generated block. +// It can be called at most once. +func (b *BlockGen) SetCoinbase(addr common.Address) { + if b.gasPool != nil { + if len(b.txs) > 0 { + panic("coinbase must be set before adding transactions") + } + panic("coinbase can only be set once") + } + b.header.Coinbase = addr + b.gasPool = new(GasPool).AddGas(b.header.GasLimit) +} + +// SetExtra sets the extra data field of the generated block. +func (b *BlockGen) SetExtra(data []byte) { + b.header.Extra = data +} + +// SetNonce sets the nonce field of the generated block. +func (b *BlockGen) SetNonce(nonce types.BlockNonce) { + b.header.Nonce = nonce +} + +// SetDifficulty sets the difficulty field of the generated block. This method is +// useful for Clique tests where the difficulty does not depend on time. For the +// ethash tests, please use OffsetTime, which implicitly recalculates the diff. +func (b *BlockGen) SetDifficulty(diff *big.Int) { + b.header.Difficulty = diff +} + +// AddTx adds a transaction to the generated block. If no coinbase has +// been set, the block's coinbase is set to the zero address. +// +// AddTx panics if the transaction cannot be executed. In addition to +// the protocol-imposed limitations (gas limit, etc.), there are some +// further limitations on the content of transactions that can be +// added. Notably, contract code relying on the BLOCKHASH instruction +// will panic during execution. +func (b *BlockGen) AddTx(tx *types.Transaction) { + b.AddTxWithChain(nil, tx) +} + +// AddTxWithChain adds a transaction to the generated block. If no coinbase has +// been set, the block's coinbase is set to the zero address. +// +// AddTxWithChain panics if the transaction cannot be executed. In addition to +// the protocol-imposed limitations (gas limit, etc.), there are some +// further limitations on the content of transactions that can be +// added. If contract code relies on the BLOCKHASH instruction, +// the block in chain will be returned. +func (b *BlockGen) AddTxWithChain(bc *BlockChain, tx *types.Transaction) { + if b.gasPool == nil { + b.SetCoinbase(common.Address{}) + } + b.statedb.Prepare(tx.Hash(), len(b.txs)) + receipt, err := ApplyTransaction(b.config, bc, &b.header.Coinbase, b.gasPool, b.statedb, b.header, tx, &b.header.GasUsed, vm.Config{}) + if err != nil { + panic(err) + } + b.txs = append(b.txs, tx) + b.receipts = append(b.receipts, receipt) +} + +// GetBalance returns the balance of the given address at the generated block. +func (b *BlockGen) GetBalance(addr common.Address) *big.Int { + return b.statedb.GetBalance(addr) +} + +// AddUncheckedTx forcefully adds a transaction to the block without any +// validation. +// +// AddUncheckedTx will cause consensus failures when used during real +// chain processing. This is best used in conjunction with raw block insertion. +func (b *BlockGen) AddUncheckedTx(tx *types.Transaction) { + b.txs = append(b.txs, tx) +} + +// Number returns the block number of the block being generated. +func (b *BlockGen) Number() *big.Int { + return new(big.Int).Set(b.header.Number) +} + +// BaseFee returns the EIP-1559 base fee of the block being generated. +func (b *BlockGen) BaseFee() *big.Int { + return new(big.Int).Set(b.header.BaseFee) +} + +// AddUncheckedReceipt forcefully adds a receipts to the block without a +// backing transaction. +// +// AddUncheckedReceipt will cause consensus failures when used during real +// chain processing. This is best used in conjunction with raw block insertion. +func (b *BlockGen) AddUncheckedReceipt(receipt *types.Receipt) { + b.receipts = append(b.receipts, receipt) +} + +// TxNonce returns the next valid transaction nonce for the +// account at addr. It panics if the account does not exist. +func (b *BlockGen) TxNonce(addr common.Address) uint64 { + if !b.statedb.Exist(addr) { + panic("account does not exist") + } + return b.statedb.GetNonce(addr) +} + +// AddUncle adds an uncle header to the generated block. +func (b *BlockGen) AddUncle(h *types.Header) { + b.uncles = append(b.uncles, h) +} + +// PrevBlock returns a previously generated block by number. It panics if +// num is greater or equal to the number of the block being generated. +// For index -1, PrevBlock returns the parent block given to GenerateChain. +func (b *BlockGen) PrevBlock(index int) *types.Block { + if index >= b.i { + panic(fmt.Errorf("block index %d out of range (%d,%d)", index, -1, b.i)) + } + if index == -1 { + return b.parent + } + return b.chain[index] +} + +// OffsetTime modifies the time instance of a block, implicitly changing its +// associated difficulty. It's useful to test scenarios where forking is not +// tied to chain length directly. +func (b *BlockGen) OffsetTime(seconds int64) { + b.header.Time += uint64(seconds) + if b.header.Time <= b.parent.Header().Time { + panic("block time out of range") + } + chainreader := &fakeChainReader{config: b.config} + b.header.Difficulty = b.engine.CalcDifficulty(chainreader, b.header.Time, b.parent.Header()) +} + +// GenerateChain creates a chain of n blocks. The first block's +// parent will be the provided parent. db is used to store +// intermediate states and should contain the parent's state trie. +// +// The generator function is called with a new block generator for +// every block. Any transactions and uncles added to the generator +// become part of the block. If gen is nil, the blocks will be empty +// and their coinbase will be the zero address. +// +// Blocks created by GenerateChain do not contain valid proof of work +// values. Inserting them into BlockChain requires use of FakePow or +// a similar non-validating proof of work implementation. +func GenerateChain(config *params.ChainConfig, parent *types.Block, engine consensus.Engine, db ethdb.Database, n int, gap uint64, gen func(int, *BlockGen)) ([]*types.Block, []types.Receipts, error) { + if config == nil { + config = params.TestChainConfig + } + blocks, receipts := make(types.Blocks, n), make([]types.Receipts, n) + chainreader := &fakeChainReader{config: config} + genblock := func(i int, parent *types.Block, statedb *state.StateDB) (*types.Block, types.Receipts, error) { + b := &BlockGen{i: i, chain: blocks, parent: parent, statedb: statedb, config: config, engine: engine} + b.header = makeHeader(chainreader, config, parent, gap, statedb, b.engine) + + // Execute any user modifications to the block + if gen != nil { + gen(i, b) + } + if b.engine != nil { + // Finalize and seal the block + block, err := b.engine.FinalizeAndAssemble(chainreader, b.header, parent.Header(), statedb, b.txs, b.uncles, b.receipts) + if err != nil { + return nil, nil, fmt.Errorf("Failed to finalize and assemble block at index %d: %w", i, err) + } + + // Write state changes to db + root, err := statedb.Commit(config.IsEIP158(b.header.Number)) + if err != nil { + panic(fmt.Sprintf("state write error: %v", err)) + } + if err := statedb.Database().TrieDB().Commit(root, false, nil); err != nil { + panic(fmt.Sprintf("trie write error: %v", err)) + } + return block, b.receipts, nil + } + return nil, nil, nil + } + for i := 0; i < n; i++ { + statedb, err := state.New(parent.Root(), state.NewDatabase(db), nil) + if err != nil { + return nil, nil, err + } + block, receipt, err := genblock(i, parent, statedb) + if err != nil { + return nil, nil, err + } + blocks[i] = block + receipts[i] = receipt + parent = block + } + return blocks, receipts, nil +} + +func makeHeader(chain consensus.ChainReader, config *params.ChainConfig, parent *types.Block, gap uint64, state *state.StateDB, engine consensus.Engine) *types.Header { + var time uint64 + if parent.Time() == 0 { + time = gap + } else { + time = parent.Time() + gap + } + + timestamp := new(big.Int).SetUint64(time) + var gasLimit uint64 + if config.IsSubnetEVM(timestamp) { + gasLimit = config.GetFeeConfig().GasLimit.Uint64() + } else { + gasLimit = CalcGasLimit(parent.GasUsed(), parent.GasLimit(), parent.GasLimit(), parent.GasLimit()) + } + + header := &types.Header{ + Root: state.IntermediateRoot(chain.Config().IsEIP158(parent.Number())), + ParentHash: parent.Hash(), + Coinbase: parent.Coinbase(), + Difficulty: engine.CalcDifficulty(chain, time, &types.Header{ + Number: parent.Number(), + Time: time - gap, + Difficulty: parent.Difficulty(), + UncleHash: parent.UncleHash(), + }), + GasLimit: gasLimit, + Number: new(big.Int).Add(parent.Number(), common.Big1), + Time: time, + } + if chain.Config().IsSubnetEVM(timestamp) { + var err error + header.Extra, header.BaseFee, err = dummy.CalcBaseFee(chain.Config(), parent.Header(), time) + if err != nil { + panic(err) + } + } + return header +} + +type fakeChainReader struct { + config *params.ChainConfig +} + +// Config returns the chain configuration. +func (cr *fakeChainReader) Config() *params.ChainConfig { + return cr.config +} + +func (cr *fakeChainReader) CurrentHeader() *types.Header { return nil } +func (cr *fakeChainReader) GetHeaderByNumber(number uint64) *types.Header { return nil } +func (cr *fakeChainReader) GetHeaderByHash(hash common.Hash) *types.Header { return nil } +func (cr *fakeChainReader) GetHeader(hash common.Hash, number uint64) *types.Header { return nil } +func (cr *fakeChainReader) GetBlock(hash common.Hash, number uint64) *types.Block { return nil } diff --git a/core/chain_makers_test.go b/core/chain_makers_test.go new file mode 100644 index 0000000000..f86141de28 --- /dev/null +++ b/core/chain_makers_test.go @@ -0,0 +1,106 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func ExampleGenerateChain() { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + key3, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + addr3 = crypto.PubkeyToAddress(key3.PublicKey) + db = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: big.NewInt(1000000)}}, + } + genesis := gspec.MustCommit(db) + + // This call generates a chain of 3 blocks. The function runs for + // each block and adds different features to gen based on the + // block index. + signer := types.HomesteadSigner{} + chain, _, err := GenerateChain(gspec.Config, genesis, dummy.NewEngine(), db, 3, 10, func(i int, gen *BlockGen) { + switch i { + case 0: + // In block 1, addr1 sends addr2 some ether. + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + case 1: + // In block 2, addr1 sends some more ether to addr2. + // addr2 passes it on to addr3. + tx1, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(1000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx1) + case 2: + tx2, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr3, big.NewInt(1000), params.TxGas, nil, nil), signer, key2) + gen.AddTx(tx2) + } + }) + if err != nil { + panic(err) + } + + // Import the chain. This runs all block validation rules. + blockchain, _ := NewBlockChain(db, DefaultCacheConfig, gspec.Config, dummy.NewEngine(), vm.Config{}, common.Hash{}) + defer blockchain.Stop() + + if i, err := blockchain.InsertChain(chain); err != nil { + fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err) + return + } + + state, _ := blockchain.State() + fmt.Printf("last block: #%d\n", blockchain.CurrentBlock().Number()) + fmt.Println("balance of addr1:", state.GetBalance(addr1)) + fmt.Println("balance of addr2:", state.GetBalance(addr2)) + fmt.Println("balance of addr3:", state.GetBalance(addr3)) + // Expected output has been modified since uncle blocks and block rewards have + // been removed from the original test. + + // Output: + // last block: #3 + // balance of addr1: 989000 + // balance of addr2: 10000 + // balance of addr3: 1000 +} diff --git a/core/error.go b/core/error.go new file mode 100644 index 0000000000..8a743243bf --- /dev/null +++ b/core/error.go @@ -0,0 +1,100 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "errors" + + "github.com/ava-labs/subnet-evm/core/types" +) + +var ( + // ErrKnownBlock is returned when a block to import is already known locally. + ErrKnownBlock = errors.New("block already known") + + // ErrNoGenesis is returned when there is no Genesis Block. + ErrNoGenesis = errors.New("genesis not found in chain") +) + +// List of evm-call-message pre-checking errors. All state transition messages will +// be pre-checked before execution. If any invalidation detected, the corresponding +// error should be returned which is defined here. +// +// - If the pre-checking happens in the miner, then the transaction won't be packed. +// - If the pre-checking happens in the block processing procedure, then a "BAD BLOCk" +// error should be emitted. +var ( + // ErrNonceTooLow is returned if the nonce of a transaction is lower than the + // one present in the local chain. + ErrNonceTooLow = errors.New("nonce too low") + + // ErrNonceTooHigh is returned if the nonce of a transaction is higher than the + // next one expected based on the local chain. + ErrNonceTooHigh = errors.New("nonce too high") + + // ErrGasLimitReached is returned by the gas pool if the amount of gas required + // by a transaction is higher than what's left in the block. + ErrGasLimitReached = errors.New("gas limit reached") + + // ErrInsufficientFundsForTransfer is returned if the transaction sender doesn't + // have enough funds for transfer(topmost call only). + ErrInsufficientFundsForTransfer = errors.New("insufficient funds for transfer") + + // ErrInsufficientFunds is returned if the total cost of executing a transaction + // is higher than the balance of the user's account. + ErrInsufficientFunds = errors.New("insufficient funds for gas * price + value") + + // ErrGasUintOverflow is returned when calculating gas usage. + ErrGasUintOverflow = errors.New("gas uint64 overflow") + + // ErrIntrinsicGas is returned if the transaction is specified to use less gas + // than required to start the invocation. + ErrIntrinsicGas = errors.New("intrinsic gas too low") + + // ErrTxTypeNotSupported is returned if a transaction is not supported in the + // current network configuration. + ErrTxTypeNotSupported = types.ErrTxTypeNotSupported + + // ErrTipAboveFeeCap is a sanity error to ensure no one is able to specify a + // transaction with a tip higher than the total fee cap. + ErrTipAboveFeeCap = errors.New("max priority fee per gas higher than max fee per gas") + + // ErrTipVeryHigh is a sanity error to avoid extremely big numbers specified + // in the tip field. + ErrTipVeryHigh = errors.New("max priority fee per gas higher than 2^256-1") + + // ErrFeeCapVeryHigh is a sanity error to avoid extremely big numbers specified + // in the fee cap field. + ErrFeeCapVeryHigh = errors.New("max fee per gas higher than 2^256-1") + + // ErrFeeCapTooLow is returned if the transaction fee cap is less than the + // the base fee of the block. + ErrFeeCapTooLow = errors.New("max fee per gas less than block base fee") + + // ErrSenderNoEOA is returned if the sender of a transaction is a contract. + ErrSenderNoEOA = errors.New("sender not an eoa") +) diff --git a/core/events.go b/core/events.go new file mode 100644 index 0000000000..3eba9a01bf --- /dev/null +++ b/core/events.go @@ -0,0 +1,57 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// NewTxsEvent is posted when a batch of transactions enter the transaction pool. +type NewTxsEvent struct{ Txs []*types.Transaction } + +// NewTxPoolHeadEvent is posted when the pool receives a request to update +// its head to [Block]. +type NewTxPoolHeadEvent struct{ Block *types.Block } + +// NewTxPoolReorgEvent is posted when the pool head is updated. +type NewTxPoolReorgEvent struct{ Head *types.Header } + +// RemovedLogsEvent is posted when a reorg happens +type RemovedLogsEvent struct{ Logs []*types.Log } + +type ChainEvent struct { + Block *types.Block + Hash common.Hash + Logs []*types.Log +} + +type ChainSideEvent struct { + Block *types.Block +} + +type ChainHeadEvent struct{ Block *types.Block } diff --git a/core/evm.go b/core/evm.go new file mode 100644 index 0000000000..56c7f69db6 --- /dev/null +++ b/core/evm.go @@ -0,0 +1,129 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "math/big" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ethereum/go-ethereum/common" +) + +// ChainContext supports retrieving headers and consensus parameters from the +// current blockchain to be used during transaction processing. +type ChainContext interface { + // Engine retrieves the chain's consensus engine. + Engine() consensus.Engine + + // GetHeader returns the hash corresponding to their hash. + GetHeader(common.Hash, uint64) *types.Header +} + +// NewEVMBlockContext creates a new context for use in the EVM. +func NewEVMBlockContext(header *types.Header, chain ChainContext, author *common.Address) vm.BlockContext { + var ( + beneficiary common.Address + baseFee *big.Int + ) + + // If we don't have an explicit author (i.e. not mining), extract from the header + if author == nil { + beneficiary, _ = chain.Engine().Author(header) // Ignore error, we're past header validation + } else { + beneficiary = *author + } + if header.BaseFee != nil { + baseFee = new(big.Int).Set(header.BaseFee) + } + return vm.BlockContext{ + CanTransfer: CanTransfer, + Transfer: Transfer, + GetHash: GetHashFn(header, chain), + Coinbase: beneficiary, + BlockNumber: new(big.Int).Set(header.Number), + Time: new(big.Int).SetUint64(header.Time), + Difficulty: new(big.Int).Set(header.Difficulty), + BaseFee: baseFee, + GasLimit: header.GasLimit, + } +} + +// NewEVMTxContext creates a new transaction context for a single transaction. +func NewEVMTxContext(msg Message) vm.TxContext { + return vm.TxContext{ + Origin: msg.From(), + GasPrice: new(big.Int).Set(msg.GasPrice()), + } +} + +// GetHashFn returns a GetHashFunc which retrieves header hashes by number +func GetHashFn(ref *types.Header, chain ChainContext) func(n uint64) common.Hash { + // Cache will initially contain [refHash.parent], + // Then fill up with [refHash.p, refHash.pp, refHash.ppp, ...] + var cache []common.Hash + + return func(n uint64) common.Hash { + // If there's no hash cache yet, make one + if len(cache) == 0 { + cache = append(cache, ref.ParentHash) + } + if idx := ref.Number.Uint64() - n - 1; idx < uint64(len(cache)) { + return cache[idx] + } + // No luck in the cache, but we can start iterating from the last element we already know + lastKnownHash := cache[len(cache)-1] + lastKnownNumber := ref.Number.Uint64() - uint64(len(cache)) + + for { + header := chain.GetHeader(lastKnownHash, lastKnownNumber) + if header == nil { + break + } + cache = append(cache, header.ParentHash) + lastKnownHash = header.ParentHash + lastKnownNumber = header.Number.Uint64() - 1 + if n == lastKnownNumber { + return lastKnownHash + } + } + return common.Hash{} + } +} + +// CanTransfer checks whether there are enough funds in the address' account to make a transfer. +// This does not take the necessary gas in to account to make the transfer valid. +func CanTransfer(db vm.StateDB, addr common.Address, amount *big.Int) bool { + return db.GetBalance(addr).Cmp(amount) >= 0 +} + +// Transfer subtracts amount from sender and adds amount to recipient using the given Db +func Transfer(db vm.StateDB, sender, recipient common.Address, amount *big.Int) { + db.SubBalance(sender, amount) + db.AddBalance(recipient, amount) +} diff --git a/core/gaspool.go b/core/gaspool.go new file mode 100644 index 0000000000..b2091b88e6 --- /dev/null +++ b/core/gaspool.go @@ -0,0 +1,64 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "fmt" + "math" +) + +// GasPool tracks the amount of gas available during execution of the transactions +// in a block. The zero value is a pool with zero gas available. +type GasPool uint64 + +// AddGas makes gas available for execution. +func (gp *GasPool) AddGas(amount uint64) *GasPool { + if uint64(*gp) > math.MaxUint64-amount { + panic("gas pool pushed above uint64") + } + *(*uint64)(gp) += amount + return gp +} + +// SubGas deducts the given amount from the pool if enough gas is +// available and returns an error otherwise. +func (gp *GasPool) SubGas(amount uint64) error { + if uint64(*gp) < amount { + return ErrGasLimitReached + } + *(*uint64)(gp) -= amount + return nil +} + +// Gas returns the amount of gas remaining in the pool. +func (gp *GasPool) Gas() uint64 { + return uint64(*gp) +} + +func (gp *GasPool) String() string { + return fmt.Sprintf("%d", *gp) +} diff --git a/core/gen_genesis.go b/core/gen_genesis.go new file mode 100644 index 0000000000..0b5264dbe3 --- /dev/null +++ b/core/gen_genesis.go @@ -0,0 +1,124 @@ +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. + +package core + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" +) + +var _ = (*genesisSpecMarshaling)(nil) + +// MarshalJSON marshals as JSON. +func (g Genesis) MarshalJSON() ([]byte, error) { + type Genesis struct { + Config *params.ChainConfig `json:"config"` + Nonce math.HexOrDecimal64 `json:"nonce"` + Timestamp math.HexOrDecimal64 `json:"timestamp"` + ExtraData hexutil.Bytes `json:"extraData"` + GasLimit math.HexOrDecimal64 `json:"gasLimit" gencodec:"required"` + Difficulty *math.HexOrDecimal256 `json:"difficulty" gencodec:"required"` + Mixhash common.Hash `json:"mixHash"` + Coinbase common.Address `json:"coinbase"` + Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc" gencodec:"required"` + Number math.HexOrDecimal64 `json:"number"` + GasUsed math.HexOrDecimal64 `json:"gasUsed"` + ParentHash common.Hash `json:"parentHash"` + BaseFee *math.HexOrDecimal256 `json:"baseFeePerGas"` + } + var enc Genesis + enc.Config = g.Config + enc.Nonce = math.HexOrDecimal64(g.Nonce) + enc.Timestamp = math.HexOrDecimal64(g.Timestamp) + enc.ExtraData = g.ExtraData + enc.GasLimit = math.HexOrDecimal64(g.GasLimit) + enc.Difficulty = (*math.HexOrDecimal256)(g.Difficulty) + enc.Mixhash = g.Mixhash + enc.Coinbase = g.Coinbase + if g.Alloc != nil { + enc.Alloc = make(map[common.UnprefixedAddress]GenesisAccount, len(g.Alloc)) + for k, v := range g.Alloc { + enc.Alloc[common.UnprefixedAddress(k)] = v + } + } + enc.Number = math.HexOrDecimal64(g.Number) + enc.GasUsed = math.HexOrDecimal64(g.GasUsed) + enc.ParentHash = g.ParentHash + enc.BaseFee = (*math.HexOrDecimal256)(g.BaseFee) + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (g *Genesis) UnmarshalJSON(input []byte) error { + type Genesis struct { + Config *params.ChainConfig `json:"config"` + Nonce *math.HexOrDecimal64 `json:"nonce"` + Timestamp *math.HexOrDecimal64 `json:"timestamp"` + ExtraData *hexutil.Bytes `json:"extraData"` + GasLimit *math.HexOrDecimal64 `json:"gasLimit" gencodec:"required"` + Difficulty *math.HexOrDecimal256 `json:"difficulty" gencodec:"required"` + Mixhash *common.Hash `json:"mixHash"` + Coinbase *common.Address `json:"coinbase"` + Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc" gencodec:"required"` + Number *math.HexOrDecimal64 `json:"number"` + GasUsed *math.HexOrDecimal64 `json:"gasUsed"` + ParentHash *common.Hash `json:"parentHash"` + BaseFee *math.HexOrDecimal256 `json:"baseFeePerGas"` + } + var dec Genesis + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + if dec.Config != nil { + g.Config = dec.Config + } + if dec.Nonce != nil { + g.Nonce = uint64(*dec.Nonce) + } + if dec.Timestamp != nil { + g.Timestamp = uint64(*dec.Timestamp) + } + if dec.ExtraData != nil { + g.ExtraData = *dec.ExtraData + } + if dec.GasLimit == nil { + return errors.New("missing required field 'gasLimit' for Genesis") + } + g.GasLimit = uint64(*dec.GasLimit) + if dec.Difficulty == nil { + return errors.New("missing required field 'difficulty' for Genesis") + } + g.Difficulty = (*big.Int)(dec.Difficulty) + if dec.Mixhash != nil { + g.Mixhash = *dec.Mixhash + } + if dec.Coinbase != nil { + g.Coinbase = *dec.Coinbase + } + if dec.Alloc == nil { + return errors.New("missing required field 'alloc' for Genesis") + } + g.Alloc = make(GenesisAlloc, len(dec.Alloc)) + for k, v := range dec.Alloc { + g.Alloc[common.Address(k)] = v + } + if dec.Number != nil { + g.Number = uint64(*dec.Number) + } + if dec.GasUsed != nil { + g.GasUsed = uint64(*dec.GasUsed) + } + if dec.ParentHash != nil { + g.ParentHash = *dec.ParentHash + } + if dec.BaseFee != nil { + g.BaseFee = (*big.Int)(dec.BaseFee) + } + return nil +} diff --git a/core/gen_genesis_account.go b/core/gen_genesis_account.go new file mode 100644 index 0000000000..a9d47e6ba3 --- /dev/null +++ b/core/gen_genesis_account.go @@ -0,0 +1,73 @@ +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. + +package core + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" +) + +var _ = (*genesisAccountMarshaling)(nil) + +// MarshalJSON marshals as JSON. +func (g GenesisAccount) MarshalJSON() ([]byte, error) { + type GenesisAccount struct { + Code hexutil.Bytes `json:"code,omitempty"` + Storage map[storageJSON]storageJSON `json:"storage,omitempty"` + Balance *math.HexOrDecimal256 `json:"balance" gencodec:"required"` + Nonce math.HexOrDecimal64 `json:"nonce,omitempty"` + PrivateKey hexutil.Bytes `json:"secretKey,omitempty"` + } + var enc GenesisAccount + enc.Code = g.Code + if g.Storage != nil { + enc.Storage = make(map[storageJSON]storageJSON, len(g.Storage)) + for k, v := range g.Storage { + enc.Storage[storageJSON(k)] = storageJSON(v) + } + } + enc.Balance = (*math.HexOrDecimal256)(g.Balance) + enc.Nonce = math.HexOrDecimal64(g.Nonce) + enc.PrivateKey = g.PrivateKey + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (g *GenesisAccount) UnmarshalJSON(input []byte) error { + type GenesisAccount struct { + Code *hexutil.Bytes `json:"code,omitempty"` + Storage map[storageJSON]storageJSON `json:"storage,omitempty"` + Balance *math.HexOrDecimal256 `json:"balance" gencodec:"required"` + Nonce *math.HexOrDecimal64 `json:"nonce,omitempty"` + PrivateKey *hexutil.Bytes `json:"secretKey,omitempty"` + } + var dec GenesisAccount + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + if dec.Code != nil { + g.Code = *dec.Code + } + if dec.Storage != nil { + g.Storage = make(map[common.Hash]common.Hash, len(dec.Storage)) + for k, v := range dec.Storage { + g.Storage[common.Hash(k)] = common.Hash(v) + } + } + if dec.Balance == nil { + return errors.New("missing required field 'balance' for GenesisAccount") + } + g.Balance = (*big.Int)(dec.Balance) + if dec.Nonce != nil { + g.Nonce = uint64(*dec.Nonce) + } + if dec.PrivateKey != nil { + g.PrivateKey = *dec.PrivateKey + } + return nil +} diff --git a/core/genesis.go b/core/genesis.go new file mode 100644 index 0000000000..ca923709dc --- /dev/null +++ b/core/genesis.go @@ -0,0 +1,306 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "bytes" + "encoding/hex" + "encoding/json" + "errors" + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/log" +) + +//go:generate gencodec -type Genesis -field-override genesisSpecMarshaling -out gen_genesis.go +//go:generate gencodec -type GenesisAccount -field-override genesisAccountMarshaling -out gen_genesis_account.go + +var errGenesisNoConfig = errors.New("genesis has no chain configuration") + +// Genesis specifies the header fields, state of a genesis block. It also defines hard +// fork switch-over blocks through the chain configuration. +type Genesis struct { + Config *params.ChainConfig `json:"config"` + Nonce uint64 `json:"nonce"` + Timestamp uint64 `json:"timestamp"` + ExtraData []byte `json:"extraData"` + GasLimit uint64 `json:"gasLimit" gencodec:"required"` + Difficulty *big.Int `json:"difficulty" gencodec:"required"` + Mixhash common.Hash `json:"mixHash"` + Coinbase common.Address `json:"coinbase"` + Alloc GenesisAlloc `json:"alloc" gencodec:"required"` + + // These fields are used for consensus tests. Please don't use them + // in actual genesis blocks. + Number uint64 `json:"number"` + GasUsed uint64 `json:"gasUsed"` + ParentHash common.Hash `json:"parentHash"` + BaseFee *big.Int `json:"baseFeePerGas"` +} + +// GenesisAlloc specifies the initial state that is part of the genesis block. +type GenesisAlloc map[common.Address]GenesisAccount + +func (ga *GenesisAlloc) UnmarshalJSON(data []byte) error { + m := make(map[common.UnprefixedAddress]GenesisAccount) + if err := json.Unmarshal(data, &m); err != nil { + return err + } + *ga = make(GenesisAlloc) + for addr, a := range m { + (*ga)[common.Address(addr)] = a + } + return nil +} + +// GenesisAccount is an account in the state of the genesis block. +type GenesisAccount struct { + Code []byte `json:"code,omitempty"` + Storage map[common.Hash]common.Hash `json:"storage,omitempty"` + Balance *big.Int `json:"balance" gencodec:"required"` + Nonce uint64 `json:"nonce,omitempty"` + PrivateKey []byte `json:"secretKey,omitempty"` // for tests +} + +// field type overrides for gencodec +type genesisSpecMarshaling struct { + Nonce math.HexOrDecimal64 + Timestamp math.HexOrDecimal64 + ExtraData hexutil.Bytes + GasLimit math.HexOrDecimal64 + GasUsed math.HexOrDecimal64 + Number math.HexOrDecimal64 + Difficulty *math.HexOrDecimal256 + BaseFee *math.HexOrDecimal256 + Alloc map[common.UnprefixedAddress]GenesisAccount +} + +type genesisAccountMarshaling struct { + Code hexutil.Bytes + Balance *math.HexOrDecimal256 + Nonce math.HexOrDecimal64 + Storage map[storageJSON]storageJSON + PrivateKey hexutil.Bytes +} + +// storageJSON represents a 256 bit byte array, but allows less than 256 bits when +// unmarshaling from hex. +type storageJSON common.Hash + +func (h *storageJSON) UnmarshalText(text []byte) error { + text = bytes.TrimPrefix(text, []byte("0x")) + if len(text) > 64 { + return fmt.Errorf("too many hex characters in storage key/value %q", text) + } + offset := len(h) - len(text)/2 // pad on the left + if _, err := hex.Decode(h[offset:], text); err != nil { + fmt.Println(err) + return fmt.Errorf("invalid hex storage key/value %q", text) + } + return nil +} + +func (h storageJSON) MarshalText() ([]byte, error) { + return hexutil.Bytes(h[:]).MarshalText() +} + +// GenesisMismatchError is raised when trying to overwrite an existing +// genesis block with an incompatible one. +type GenesisMismatchError struct { + Stored, New common.Hash +} + +func (e *GenesisMismatchError) Error() string { + return fmt.Sprintf("database contains incompatible genesis (have %x, new %x)", e.Stored, e.New) +} + +// SetupGenesisBlock writes or updates the genesis block in db. +// The block that will be used is: +// +// genesis == nil genesis != nil +// +------------------------------------------ +// db has no genesis | main-net default | genesis +// db has genesis | from DB | genesis (if compatible) +// +// The stored chain configuration will be updated if it is compatible (i.e. does not +// specify a fork block below the local head block). In case of a conflict, the +// error is a *params.ConfigCompatError and the new, unwritten config is returned. +func SetupGenesisBlock(db ethdb.Database, genesis *Genesis) (*params.ChainConfig, error) { + if genesis == nil { + return nil, ErrNoGenesis + } + if genesis.Config == nil { + return nil, errGenesisNoConfig + } + // Just commit the new block if there is no stored genesis block. + stored := rawdb.ReadCanonicalHash(db, 0) + if (stored == common.Hash{}) { + log.Info("Writing genesis to database") + _, err := genesis.Commit(db) + if err != nil { + return genesis.Config, err + } + return genesis.Config, nil + } + // We have the genesis block in database but the corresponding state is missing. + header := rawdb.ReadHeader(db, stored, 0) + if _, err := state.New(header.Root, state.NewDatabase(db), nil); err != nil { + // Ensure the stored genesis matches with the given one. + hash := genesis.ToBlock(nil).Hash() + if hash != stored { + return genesis.Config, &GenesisMismatchError{stored, hash} + } + _, err := genesis.Commit(db) + return genesis.Config, err + } + // Check whether the genesis block is already written. + hash := genesis.ToBlock(nil).Hash() + if hash != stored { + return genesis.Config, &GenesisMismatchError{stored, hash} + } + // Get the existing chain configuration. + newcfg := genesis.Config + if err := newcfg.CheckConfigForkOrder(); err != nil { + return newcfg, err + } + storedcfg := rawdb.ReadChainConfig(db, stored) + if storedcfg == nil { + log.Warn("Found genesis block without chain config") + rawdb.WriteChainConfig(db, stored, newcfg) + return newcfg, nil + } + + // Check config compatibility and write the config. Compatibility errors + // are returned to the caller unless we're already at block zero. + height := rawdb.ReadHeaderNumber(db, rawdb.ReadHeadHeaderHash(db)) + if height == nil { + return newcfg, fmt.Errorf("missing block number for head header hash") + } + compatErr := storedcfg.CheckCompatible(newcfg, *height) + if compatErr != nil && *height != 0 && compatErr.RewindTo != 0 { + return newcfg, compatErr + } + rawdb.WriteChainConfig(db, stored, newcfg) + return newcfg, nil +} + +// ToBlock creates the genesis block and writes state of a genesis specification +// to the given database (or discards it if nil). +func (g *Genesis) ToBlock(db ethdb.Database) *types.Block { + if db == nil { + db = rawdb.NewMemoryDatabase() + } + statedb, err := state.New(common.Hash{}, state.NewDatabase(db), nil) + if err != nil { + panic(err) + } + for addr, account := range g.Alloc { + statedb.AddBalance(addr, account.Balance) + statedb.SetCode(addr, account.Code) + statedb.SetNonce(addr, account.Nonce) + for key, value := range account.Storage { + statedb.SetState(addr, key, value) + } + } + root := statedb.IntermediateRoot(false) + head := &types.Header{ + Number: new(big.Int).SetUint64(g.Number), + Nonce: types.EncodeNonce(g.Nonce), + Time: g.Timestamp, + ParentHash: g.ParentHash, + Extra: g.ExtraData, + GasLimit: g.GasLimit, + GasUsed: g.GasUsed, + BaseFee: g.BaseFee, + Difficulty: g.Difficulty, + MixDigest: g.Mixhash, + Coinbase: g.Coinbase, + Root: root, + } + if g.GasLimit == 0 { + head.GasLimit = params.GenesisGasLimit + } + if g.Difficulty == nil { + head.Difficulty = params.GenesisDifficulty + } + if g.Config != nil && g.Config.IsSubnetEVM(common.Big0) { + if g.BaseFee != nil { + head.BaseFee = g.BaseFee + } else { + head.BaseFee = g.Config.GetFeeConfig().MinBaseFee + } + } + statedb.Commit(false) + statedb.Database().TrieDB().Commit(root, true, nil) + + return types.NewBlock(head, nil, nil, nil, trie.NewStackTrie(nil)) +} + +// Commit writes the block and state of a genesis specification to the database. +// The block is committed as the canonical head block. +func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) { + block := g.ToBlock(db) + if block.Number().Sign() != 0 { + return nil, errors.New("can't commit genesis block with number > 0") + } + config := g.Config + if config == nil { + return nil, errGenesisNoConfig + } + if err := config.CheckConfigForkOrder(); err != nil { + return nil, err + } + rawdb.WriteTd(db, block.Hash(), block.NumberU64(), g.Difficulty) + rawdb.WriteBlock(db, block) + rawdb.WriteReceipts(db, block.Hash(), block.NumberU64(), nil) + rawdb.WriteCanonicalHash(db, block.Hash(), block.NumberU64()) + rawdb.WriteHeadBlockHash(db, block.Hash()) + rawdb.WriteHeadFastBlockHash(db, block.Hash()) + rawdb.WriteHeadHeaderHash(db, block.Hash()) + rawdb.WriteChainConfig(db, block.Hash(), config) + return block, nil +} + +// MustCommit writes the genesis block and state to db, panicking on error. +// The block is committed as the canonical head block. +func (g *Genesis) MustCommit(db ethdb.Database) *types.Block { + block, err := g.Commit(db) + if err != nil { + panic(err) + } + return block +} diff --git a/core/headerchain.go b/core/headerchain.go new file mode 100644 index 0000000000..07f7a8a2c6 --- /dev/null +++ b/core/headerchain.go @@ -0,0 +1,228 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + crand "crypto/rand" + "math" + "math/big" + mrand "math/rand" + "sync/atomic" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + lru "github.com/hashicorp/golang-lru" +) + +const ( + headerCacheLimit = 512 + tdCacheLimit = 1024 + numberCacheLimit = 2048 +) + +// HeaderChain implements the basic block header chain logic that is shared by +// core.BlockChain and light.LightChain. It is not usable in itself, only as +// a part of either structure. +// +// HeaderChain is responsible for maintaining the header chain including the +// header query and updating. +// +// The components maintained by headerchain includes: (1) total difficult +// (2) header (3) block hash -> number mapping (4) canonical number -> hash mapping +// and (5) head header flag. +// +// It is not thread safe either, the encapsulating chain structures should do +// the necessary mutex locking/unlocking. +type HeaderChain struct { + config *params.ChainConfig + + chainDb ethdb.Database + genesisHeader *types.Header + + currentHeader atomic.Value // Current head of the header chain (may be above the block chain!) + currentHeaderHash common.Hash // Hash of the current head of the header chain (prevent recomputing all the time) + + headerCache *lru.Cache // Cache for the most recent block headers + tdCache *lru.Cache // Cache for the most recent block total difficulties + numberCache *lru.Cache // Cache for the most recent block numbers + + rand *mrand.Rand + engine consensus.Engine +} + +// NewHeaderChain creates a new HeaderChain structure. ProcInterrupt points +// to the parent's interrupt semaphore. +func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine consensus.Engine) (*HeaderChain, error) { + headerCache, _ := lru.New(headerCacheLimit) + tdCache, _ := lru.New(tdCacheLimit) + numberCache, _ := lru.New(numberCacheLimit) + + // Seed a fast but crypto originating random generator + seed, err := crand.Int(crand.Reader, big.NewInt(math.MaxInt64)) + if err != nil { + return nil, err + } + + hc := &HeaderChain{ + config: config, + chainDb: chainDb, + headerCache: headerCache, + tdCache: tdCache, + numberCache: numberCache, + rand: mrand.New(mrand.NewSource(seed.Int64())), + engine: engine, + } + + hc.genesisHeader = hc.GetHeaderByNumber(0) + if hc.genesisHeader == nil { + return nil, ErrNoGenesis + } + + hc.currentHeader.Store(hc.genesisHeader) + if head := rawdb.ReadHeadBlockHash(chainDb); head != (common.Hash{}) { + if chead := hc.GetHeaderByHash(head); chead != nil { + hc.currentHeader.Store(chead) + } + } + hc.currentHeaderHash = hc.CurrentHeader().Hash() + + return hc, nil +} + +// GetBlockNumber retrieves the block number belonging to the given hash +// from the cache or database +func (hc *HeaderChain) GetBlockNumber(hash common.Hash) *uint64 { + if cached, ok := hc.numberCache.Get(hash); ok { + number := cached.(uint64) + return &number + } + number := rawdb.ReadHeaderNumber(hc.chainDb, hash) + if number != nil { + hc.numberCache.Add(hash, *number) + } + return number +} + +// GetTd retrieves a block's total difficulty in the canonical chain from the +// database by hash and number, caching it if found. +func (hc *HeaderChain) GetTd(hash common.Hash, number uint64) *big.Int { + // Short circuit if the td's already in the cache, retrieve otherwise + if cached, ok := hc.tdCache.Get(hash); ok { + return cached.(*big.Int) + } + td := rawdb.ReadTd(hc.chainDb, hash, number) + if td == nil { + return nil + } + // Cache the found body for next time and return + hc.tdCache.Add(hash, td) + return td +} + +// GetHeader retrieves a block header from the database by hash and number, +// caching it if found. +func (hc *HeaderChain) GetHeader(hash common.Hash, number uint64) *types.Header { + // Short circuit if the header's already in the cache, retrieve otherwise + if header, ok := hc.headerCache.Get(hash); ok { + return header.(*types.Header) + } + header := rawdb.ReadHeader(hc.chainDb, hash, number) + if header == nil { + return nil + } + // Cache the found header for next time and return + hc.headerCache.Add(hash, header) + return header +} + +// GetHeaderByHash retrieves a block header from the database by hash, caching it if +// found. +func (hc *HeaderChain) GetHeaderByHash(hash common.Hash) *types.Header { + number := hc.GetBlockNumber(hash) + if number == nil { + return nil + } + return hc.GetHeader(hash, *number) +} + +// HasHeader checks if a block header is present in the database or not. +// In theory, if header is present in the database, all relative components +// like td and hash->number should be present too. +func (hc *HeaderChain) HasHeader(hash common.Hash, number uint64) bool { + if hc.numberCache.Contains(hash) || hc.headerCache.Contains(hash) { + return true + } + return rawdb.HasHeader(hc.chainDb, hash, number) +} + +// GetHeaderByNumber retrieves a block header from the database by number, +// caching it (associated with its hash) if found. +func (hc *HeaderChain) GetHeaderByNumber(number uint64) *types.Header { + hash := rawdb.ReadCanonicalHash(hc.chainDb, number) + if hash == (common.Hash{}) { + return nil + } + return hc.GetHeader(hash, number) +} + +func (hc *HeaderChain) GetCanonicalHash(number uint64) common.Hash { + return rawdb.ReadCanonicalHash(hc.chainDb, number) +} + +// CurrentHeader retrieves the current head header of the canonical chain. The +// header is retrieved from the HeaderChain's internal cache. +func (hc *HeaderChain) CurrentHeader() *types.Header { + return hc.currentHeader.Load().(*types.Header) +} + +// SetCurrentHeader sets the in-memory head header marker of the canonical chan +// as the given header. +func (hc *HeaderChain) SetCurrentHeader(head *types.Header) { + hc.currentHeader.Store(head) + hc.currentHeaderHash = head.Hash() +} + +// SetGenesis sets a new genesis block header for the chain +func (hc *HeaderChain) SetGenesis(head *types.Header) { + hc.genesisHeader = head +} + +// Config retrieves the header chain's chain configuration. +func (hc *HeaderChain) Config() *params.ChainConfig { return hc.config } + +// Engine retrieves the header chain's consensus engine. +func (hc *HeaderChain) Engine() consensus.Engine { return hc.engine } + +// GetBlock implements consensus.ChainReader, and returns nil for every input as +// a header chain does not have blocks available for retrieval. +func (hc *HeaderChain) GetBlock(hash common.Hash, number uint64) *types.Block { + return nil +} diff --git a/core/mkalloc.go b/core/mkalloc.go new file mode 100644 index 0000000000..503130214f --- /dev/null +++ b/core/mkalloc.go @@ -0,0 +1,97 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:build none +// +build none + +/* + + The mkalloc tool creates the genesis allocation constants in genesis_alloc.go + It outputs a const declaration that contains an RLP-encoded list of (address, balance) tuples. + + go run mkalloc.go genesis.json + +*/ +package main + +import ( + "encoding/json" + "fmt" + "math/big" + "os" + "sort" + "strconv" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/rlp" +) + +type allocItem struct{ Addr, Balance *big.Int } + +type allocList []allocItem + +func (a allocList) Len() int { return len(a) } +func (a allocList) Less(i, j int) bool { return a[i].Addr.Cmp(a[j].Addr) < 0 } +func (a allocList) Swap(i, j int) { a[i], a[j] = a[j], a[i] } + +func makelist(g *core.Genesis) allocList { + a := make(allocList, 0, len(g.Alloc)) + for addr, account := range g.Alloc { + if len(account.Storage) > 0 || len(account.Code) > 0 || account.Nonce != 0 { + panic(fmt.Sprintf("can't encode account %x", addr)) + } + bigAddr := new(big.Int).SetBytes(addr.Bytes()) + a = append(a, allocItem{bigAddr, account.Balance}) + } + sort.Sort(a) + return a +} + +func makealloc(g *core.Genesis) string { + a := makelist(g) + data, err := rlp.EncodeToBytes(a) + if err != nil { + panic(err) + } + return strconv.QuoteToASCII(string(data)) +} + +func main() { + if len(os.Args) != 2 { + fmt.Fprintln(os.Stderr, "Usage: mkalloc genesis.json") + os.Exit(1) + } + + g := new(core.Genesis) + file, err := os.Open(os.Args[1]) + if err != nil { + panic(err) + } + if err := json.NewDecoder(file).Decode(g); err != nil { + panic(err) + } + fmt.Println("const allocData =", makealloc(g)) +} diff --git a/core/rawdb/accessors_chain.go b/core/rawdb/accessors_chain.go new file mode 100644 index 0000000000..73788c44d8 --- /dev/null +++ b/core/rawdb/accessors_chain.go @@ -0,0 +1,706 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "bytes" + "encoding/binary" + "errors" + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// ReadCanonicalHash retrieves the hash assigned to a canonical block number. +func ReadCanonicalHash(db ethdb.Reader, number uint64) common.Hash { + data, _ := db.Get(headerHashKey(number)) + if len(data) == 0 { + return common.Hash{} + } + return common.BytesToHash(data) +} + +// WriteCanonicalHash stores the hash assigned to a canonical block number. +func WriteCanonicalHash(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + if err := db.Put(headerHashKey(number), hash.Bytes()); err != nil { + log.Crit("Failed to store number to hash mapping", "err", err) + } +} + +// DeleteCanonicalHash removes the number to hash canonical mapping. +func DeleteCanonicalHash(db ethdb.KeyValueWriter, number uint64) { + if err := db.Delete(headerHashKey(number)); err != nil { + log.Crit("Failed to delete number to hash mapping", "err", err) + } +} + +// ReadAllHashes retrieves all the hashes assigned to blocks at a certain heights, +// both canonical and reorged forks included. +func ReadAllHashes(db ethdb.Iteratee, number uint64) []common.Hash { + prefix := headerKeyPrefix(number) + + hashes := make([]common.Hash, 0, 1) + it := db.NewIterator(prefix, nil) + defer it.Release() + + for it.Next() { + if key := it.Key(); len(key) == len(prefix)+32 { + hashes = append(hashes, common.BytesToHash(key[len(key)-32:])) + } + } + return hashes +} + +type NumberHash struct { + Number uint64 + Hash common.Hash +} + +// ReadAllHashes retrieves all the hashes assigned to blocks at a certain heights, +// both canonical and reorged forks included. +// This method considers both limits to be _inclusive_. +func ReadAllHashesInRange(db ethdb.Iteratee, first, last uint64) []*NumberHash { + var ( + start = encodeBlockNumber(first) + keyLength = len(headerPrefix) + 8 + 32 + hashes = make([]*NumberHash, 0, 1+last-first) + it = db.NewIterator(headerPrefix, start) + ) + defer it.Release() + for it.Next() { + key := it.Key() + if len(key) != keyLength { + continue + } + num := binary.BigEndian.Uint64(key[len(headerPrefix) : len(headerPrefix)+8]) + if num > last { + break + } + hash := common.BytesToHash(key[len(key)-32:]) + hashes = append(hashes, &NumberHash{num, hash}) + } + return hashes +} + +// ReadAllCanonicalHashes retrieves all canonical number and hash mappings at the +// certain chain range. If the accumulated entries reaches the given threshold, +// abort the iteration and return the semi-finish result. +func ReadAllCanonicalHashes(db ethdb.Iteratee, from uint64, to uint64, limit int) ([]uint64, []common.Hash) { + // Short circuit if the limit is 0. + if limit == 0 { + return nil, nil + } + var ( + numbers []uint64 + hashes []common.Hash + ) + // Construct the key prefix of start point. + start, end := headerHashKey(from), headerHashKey(to) + it := db.NewIterator(nil, start) + defer it.Release() + + for it.Next() { + if bytes.Compare(it.Key(), end) >= 0 { + break + } + if key := it.Key(); len(key) == len(headerPrefix)+8+1 && bytes.Equal(key[len(key)-1:], headerHashSuffix) { + numbers = append(numbers, binary.BigEndian.Uint64(key[len(headerPrefix):len(headerPrefix)+8])) + hashes = append(hashes, common.BytesToHash(it.Value())) + // If the accumulated entries reaches the limit threshold, return. + if len(numbers) >= limit { + break + } + } + } + return numbers, hashes +} + +// ReadHeaderNumber returns the header number assigned to a hash. +func ReadHeaderNumber(db ethdb.KeyValueReader, hash common.Hash) *uint64 { + data, _ := db.Get(headerNumberKey(hash)) + if len(data) != 8 { + return nil + } + number := binary.BigEndian.Uint64(data) + return &number +} + +// WriteHeaderNumber stores the hash->number mapping. +func WriteHeaderNumber(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + key := headerNumberKey(hash) + enc := encodeBlockNumber(number) + if err := db.Put(key, enc); err != nil { + log.Crit("Failed to store hash to number mapping", "err", err) + } +} + +// DeleteHeaderNumber removes hash->number mapping. +func DeleteHeaderNumber(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Delete(headerNumberKey(hash)); err != nil { + log.Crit("Failed to delete hash to number mapping", "err", err) + } +} + +// ReadHeadHeaderHash retrieves the hash of the current canonical head header. +func ReadHeadHeaderHash(db ethdb.KeyValueReader) common.Hash { + data, _ := db.Get(headHeaderKey) + if len(data) == 0 { + return common.Hash{} + } + return common.BytesToHash(data) +} + +// WriteHeadHeaderHash stores the hash of the current canonical head header. +func WriteHeadHeaderHash(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Put(headHeaderKey, hash.Bytes()); err != nil { + log.Crit("Failed to store last header's hash", "err", err) + } +} + +// ReadHeadBlockHash retrieves the hash of the current canonical head block. +func ReadHeadBlockHash(db ethdb.KeyValueReader) common.Hash { + data, _ := db.Get(headBlockKey) + if len(data) == 0 { + return common.Hash{} + } + return common.BytesToHash(data) +} + +// WriteHeadBlockHash stores the head block's hash. +func WriteHeadBlockHash(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Put(headBlockKey, hash.Bytes()); err != nil { + log.Crit("Failed to store last block's hash", "err", err) + } +} + +// ReadHeadFastBlockHash retrieves the hash of the current fast-sync head block. +func ReadHeadFastBlockHash(db ethdb.KeyValueReader) common.Hash { + data, _ := db.Get(headFastBlockKey) + if len(data) == 0 { + return common.Hash{} + } + return common.BytesToHash(data) +} + +// WriteHeadFastBlockHash stores the hash of the current fast-sync head block. +func WriteHeadFastBlockHash(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Put(headFastBlockKey, hash.Bytes()); err != nil { + log.Crit("Failed to store last fast block's hash", "err", err) + } +} + +// ReadFastTrieProgress retrieves the number of tries nodes fast synced to allow +// reporting correct numbers across restarts. +func ReadFastTrieProgress(db ethdb.KeyValueReader) uint64 { + data, _ := db.Get(fastTrieProgressKey) + if len(data) == 0 { + return 0 + } + return new(big.Int).SetBytes(data).Uint64() +} + +// WriteFastTrieProgress stores the fast sync trie process counter to support +// retrieving it across restarts. +func WriteFastTrieProgress(db ethdb.KeyValueWriter, count uint64) { + if err := db.Put(fastTrieProgressKey, new(big.Int).SetUint64(count).Bytes()); err != nil { + log.Crit("Failed to store fast sync trie progress", "err", err) + } +} + +// ReadTxIndexTail retrieves the number of oldest indexed block +// whose transaction indices has been indexed. If the corresponding entry +// is non-existent in database it means the indexing has been finished. +func ReadTxIndexTail(db ethdb.KeyValueReader) *uint64 { + data, _ := db.Get(txIndexTailKey) + if len(data) != 8 { + return nil + } + number := binary.BigEndian.Uint64(data) + return &number +} + +// WriteTxIndexTail stores the number of oldest indexed block +// into database. +func WriteTxIndexTail(db ethdb.KeyValueWriter, number uint64) { + if err := db.Put(txIndexTailKey, encodeBlockNumber(number)); err != nil { + log.Crit("Failed to store the transaction index tail", "err", err) + } +} + +// ReadFastTxLookupLimit retrieves the tx lookup limit used in fast sync. +func ReadFastTxLookupLimit(db ethdb.KeyValueReader) *uint64 { + data, _ := db.Get(fastTxLookupLimitKey) + if len(data) != 8 { + return nil + } + number := binary.BigEndian.Uint64(data) + return &number +} + +// WriteFastTxLookupLimit stores the txlookup limit used in fast sync into database. +func WriteFastTxLookupLimit(db ethdb.KeyValueWriter, number uint64) { + if err := db.Put(fastTxLookupLimitKey, encodeBlockNumber(number)); err != nil { + log.Crit("Failed to store transaction lookup limit for fast sync", "err", err) + } +} + +// ReadHeaderRLP retrieves a block header in its raw RLP database encoding. +func ReadHeaderRLP(db ethdb.Reader, hash common.Hash, number uint64) rlp.RawValue { + // Then try to look up the data in leveldb. + data, _ := db.Get(headerKey(number, hash)) + if len(data) > 0 { + return data + } + return nil // Can't find the data anywhere. +} + +// HasHeader verifies the existence of a block header corresponding to the hash. +func HasHeader(db ethdb.Reader, hash common.Hash, number uint64) bool { + if has, err := db.Has(headerKey(number, hash)); !has || err != nil { + return false + } + return true +} + +// ReadHeader retrieves the block header corresponding to the hash. +func ReadHeader(db ethdb.Reader, hash common.Hash, number uint64) *types.Header { + data := ReadHeaderRLP(db, hash, number) + if len(data) == 0 { + return nil + } + header := new(types.Header) + if err := rlp.Decode(bytes.NewReader(data), header); err != nil { + log.Error("Invalid block header RLP", "hash", hash, "err", err) + return nil + } + return header +} + +// WriteHeader stores a block header into the database and also stores the hash- +// to-number mapping. +func WriteHeader(db ethdb.KeyValueWriter, header *types.Header) { + var ( + hash = header.Hash() + number = header.Number.Uint64() + ) + // Write the hash -> number mapping + WriteHeaderNumber(db, hash, number) + + // Write the encoded header + data, err := rlp.EncodeToBytes(header) + if err != nil { + log.Crit("Failed to RLP encode header", "err", err) + } + key := headerKey(number, hash) + if err := db.Put(key, data); err != nil { + log.Crit("Failed to store header", "err", err) + } +} + +// DeleteHeader removes all block header data associated with a hash. +func DeleteHeader(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + deleteHeaderWithoutNumber(db, hash, number) + if err := db.Delete(headerNumberKey(hash)); err != nil { + log.Crit("Failed to delete hash to number mapping", "err", err) + } +} + +// deleteHeaderWithoutNumber removes only the block header but does not remove +// the hash to number mapping. +func deleteHeaderWithoutNumber(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + if err := db.Delete(headerKey(number, hash)); err != nil { + log.Crit("Failed to delete header", "err", err) + } +} + +// ReadBodyRLP retrieves the block body (transactions and uncles) in RLP encoding. +func ReadBodyRLP(db ethdb.Reader, hash common.Hash, number uint64) rlp.RawValue { + // Then try to look up the data in leveldb. + data, _ := db.Get(blockBodyKey(number, hash)) + if len(data) > 0 { + return data + } + return nil // Can't find the data anywhere. +} + +// ReadCanonicalBodyRLP retrieves the block body (transactions and uncles) for the canonical +// block at number, in RLP encoding. +func ReadCanonicalBodyRLP(db ethdb.Reader, number uint64) rlp.RawValue { + // Need to get the hash + data, _ := db.Get(blockBodyKey(number, ReadCanonicalHash(db, number))) + if len(data) > 0 { + return data + } + return nil +} + +// WriteBodyRLP stores an RLP encoded block body into the database. +func WriteBodyRLP(db ethdb.KeyValueWriter, hash common.Hash, number uint64, rlp rlp.RawValue) { + if err := db.Put(blockBodyKey(number, hash), rlp); err != nil { + log.Crit("Failed to store block body", "err", err) + } +} + +// HasBody verifies the existence of a block body corresponding to the hash. +func HasBody(db ethdb.Reader, hash common.Hash, number uint64) bool { + if has, err := db.Has(blockBodyKey(number, hash)); !has || err != nil { + return false + } + return true +} + +// ReadBody retrieves the block body corresponding to the hash. +func ReadBody(db ethdb.Reader, hash common.Hash, number uint64) *types.Body { + data := ReadBodyRLP(db, hash, number) + if len(data) == 0 { + return nil + } + body := new(types.Body) + if err := rlp.Decode(bytes.NewReader(data), body); err != nil { + log.Error("Invalid block body RLP", "hash", hash, "err", err) + return nil + } + return body +} + +// WriteBody stores a block body into the database. +func WriteBody(db ethdb.KeyValueWriter, hash common.Hash, number uint64, body *types.Body) { + data, err := rlp.EncodeToBytes(body) + if err != nil { + log.Crit("Failed to RLP encode body", "err", err) + } + WriteBodyRLP(db, hash, number, data) +} + +// DeleteBody removes all block body data associated with a hash. +func DeleteBody(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + if err := db.Delete(blockBodyKey(number, hash)); err != nil { + log.Crit("Failed to delete block body", "err", err) + } +} + +// ReadTdRLP retrieves a block's total difficulty corresponding to the hash in RLP encoding. +func ReadTdRLP(db ethdb.Reader, hash common.Hash, number uint64) rlp.RawValue { + // Then try to look up the data in leveldb. + data, _ := db.Get(headerTDKey(number, hash)) + if len(data) > 0 { + return data + } + return nil // Can't find the data anywhere. +} + +// ReadTd retrieves a block's total difficulty corresponding to the hash. +func ReadTd(db ethdb.Reader, hash common.Hash, number uint64) *big.Int { + data := ReadTdRLP(db, hash, number) + if len(data) == 0 { + return nil + } + td := new(big.Int) + if err := rlp.Decode(bytes.NewReader(data), td); err != nil { + log.Error("Invalid block total difficulty RLP", "hash", hash, "err", err) + return nil + } + return td +} + +// WriteTd stores the total difficulty of a block into the database. +func WriteTd(db ethdb.KeyValueWriter, hash common.Hash, number uint64, td *big.Int) { + data, err := rlp.EncodeToBytes(td) + if err != nil { + log.Crit("Failed to RLP encode block total difficulty", "err", err) + } + if err := db.Put(headerTDKey(number, hash), data); err != nil { + log.Crit("Failed to store block total difficulty", "err", err) + } +} + +// DeleteTd removes all block total difficulty data associated with a hash. +func DeleteTd(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + if err := db.Delete(headerTDKey(number, hash)); err != nil { + log.Crit("Failed to delete block total difficulty", "err", err) + } +} + +// HasReceipts verifies the existence of all the transaction receipts belonging +// to a block. +func HasReceipts(db ethdb.Reader, hash common.Hash, number uint64) bool { + if has, err := db.Has(blockReceiptsKey(number, hash)); !has || err != nil { + return false + } + return true +} + +// ReadReceiptsRLP retrieves all the transaction receipts belonging to a block in RLP encoding. +func ReadReceiptsRLP(db ethdb.Reader, hash common.Hash, number uint64) rlp.RawValue { + // Then try to look up the data in leveldb. + data, _ := db.Get(blockReceiptsKey(number, hash)) + if len(data) > 0 { + return data + } + return nil // Can't find the data anywhere. +} + +// ReadRawReceipts retrieves all the transaction receipts belonging to a block. +// The receipt metadata fields are not guaranteed to be populated, so they +// should not be used. Use ReadReceipts instead if the metadata is needed. +func ReadRawReceipts(db ethdb.Reader, hash common.Hash, number uint64) types.Receipts { + // Retrieve the flattened receipt slice + data := ReadReceiptsRLP(db, hash, number) + if len(data) == 0 { + return nil + } + // Convert the receipts from their storage form to their internal representation + storageReceipts := []*types.ReceiptForStorage{} + if err := rlp.DecodeBytes(data, &storageReceipts); err != nil { + log.Error("Invalid receipt array RLP", "hash", hash, "err", err) + return nil + } + receipts := make(types.Receipts, len(storageReceipts)) + for i, storageReceipt := range storageReceipts { + receipts[i] = (*types.Receipt)(storageReceipt) + } + return receipts +} + +// ReadReceipts retrieves all the transaction receipts belonging to a block, including +// its correspoinding metadata fields. If it is unable to populate these metadata +// fields then nil is returned. +// +// The current implementation populates these metadata fields by reading the receipts' +// corresponding block body, so if the block body is not found it will return nil even +// if the receipt itself is stored. +func ReadReceipts(db ethdb.Reader, hash common.Hash, number uint64, config *params.ChainConfig) types.Receipts { + // We're deriving many fields from the block body, retrieve beside the receipt + receipts := ReadRawReceipts(db, hash, number) + if receipts == nil { + return nil + } + header := ReadHeader(db, hash, number) + if header == nil { + return nil + } + body := ReadBody(db, hash, number) + if body == nil { + log.Error("Missing body but have receipt", "hash", hash, "number", number) + return nil + } + if err := receipts.DeriveFields(config, hash, number, header.Time, body.Transactions); err != nil { + log.Error("Failed to derive block receipts fields", "hash", hash, "number", number, "err", err) + return nil + } + return receipts +} + +// WriteReceipts stores all the transaction receipts belonging to a block. +func WriteReceipts(db ethdb.KeyValueWriter, hash common.Hash, number uint64, receipts types.Receipts) { + // Convert the receipts into their storage form and serialize them + storageReceipts := make([]*types.ReceiptForStorage, len(receipts)) + for i, receipt := range receipts { + storageReceipts[i] = (*types.ReceiptForStorage)(receipt) + } + bytes, err := rlp.EncodeToBytes(storageReceipts) + if err != nil { + log.Crit("Failed to encode block receipts", "err", err) + } + // Store the flattened receipt slice + if err := db.Put(blockReceiptsKey(number, hash), bytes); err != nil { + log.Crit("Failed to store block receipts", "err", err) + } +} + +// DeleteReceipts removes all receipt data associated with a block hash. +func DeleteReceipts(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + if err := db.Delete(blockReceiptsKey(number, hash)); err != nil { + log.Crit("Failed to delete block receipts", "err", err) + } +} + +// storedReceiptRLP is the storage encoding of a receipt. +// Re-definition in core/types/receipt.go. +type storedReceiptRLP struct { + PostStateOrStatus []byte + CumulativeGasUsed uint64 + Logs []*types.LogForStorage +} + +// ReceiptLogs is a barebone version of ReceiptForStorage which only keeps +// the list of logs. When decoding a stored receipt into this object we +// avoid creating the bloom filter. +type receiptLogs struct { + Logs []*types.Log +} + +// DecodeRLP implements rlp.Decoder. +func (r *receiptLogs) DecodeRLP(s *rlp.Stream) error { + var stored storedReceiptRLP + if err := s.Decode(&stored); err != nil { + return err + } + r.Logs = make([]*types.Log, len(stored.Logs)) + for i, log := range stored.Logs { + r.Logs[i] = (*types.Log)(log) + } + return nil +} + +// DeriveLogFields fills the logs in receiptLogs with information such as block number, txhash, etc. +func deriveLogFields(receipts []*receiptLogs, hash common.Hash, number uint64, txs types.Transactions) error { + logIndex := uint(0) + if len(txs) != len(receipts) { + return errors.New("transaction and receipt count mismatch") + } + for i := 0; i < len(receipts); i++ { + txHash := txs[i].Hash() + // The derived log fields can simply be set from the block and transaction + for j := 0; j < len(receipts[i].Logs); j++ { + receipts[i].Logs[j].BlockNumber = number + receipts[i].Logs[j].BlockHash = hash + receipts[i].Logs[j].TxHash = txHash + receipts[i].Logs[j].TxIndex = uint(i) + receipts[i].Logs[j].Index = logIndex + logIndex++ + } + } + return nil +} + +// ReadLogs retrieves the logs for all transactions in a block. The log fields +// are populated with metadata. In case the receipts or the block body +// are not found, a nil is returned. +func ReadLogs(db ethdb.Reader, hash common.Hash, number uint64) [][]*types.Log { + // Retrieve the flattened receipt slice + data := ReadReceiptsRLP(db, hash, number) + if len(data) == 0 { + return nil + } + receipts := []*receiptLogs{} + if err := rlp.DecodeBytes(data, &receipts); err != nil { + log.Error("Invalid receipt array RLP", "hash", hash, "err", err) + return nil + } + + body := ReadBody(db, hash, number) + if body == nil { + log.Error("Missing body but have receipt", "hash", hash, "number", number) + return nil + } + if err := deriveLogFields(receipts, hash, number, body.Transactions); err != nil { + log.Error("Failed to derive block receipts fields", "hash", hash, "number", number, "err", err) + return nil + } + logs := make([][]*types.Log, len(receipts)) + for i, receipt := range receipts { + logs[i] = receipt.Logs + } + return logs +} + +// ReadBlock retrieves an entire block corresponding to the hash, assembling it +// back from the stored header and body. If either the header or body could not +// be retrieved nil is returned. +// +// Note, due to concurrent download of header and block body the header and thus +// canonical hash can be stored in the database but the body data not (yet). +func ReadBlock(db ethdb.Reader, hash common.Hash, number uint64) *types.Block { + header := ReadHeader(db, hash, number) + if header == nil { + return nil + } + body := ReadBody(db, hash, number) + if body == nil { + return nil + } + return types.NewBlockWithHeader(header).WithBody(body.Transactions, body.Uncles) +} + +// WriteBlock serializes a block into the database, header and body separately. +func WriteBlock(db ethdb.KeyValueWriter, block *types.Block) { + WriteBody(db, block.Hash(), block.NumberU64(), block.Body()) + WriteHeader(db, block.Header()) +} + +// DeleteBlock removes all block data associated with a hash. +func DeleteBlock(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + DeleteReceipts(db, hash, number) + DeleteHeader(db, hash, number) + DeleteBody(db, hash, number) + DeleteTd(db, hash, number) +} + +// DeleteBlockWithoutNumber removes all block data associated with a hash, except +// the hash to number mapping. +func DeleteBlockWithoutNumber(db ethdb.KeyValueWriter, hash common.Hash, number uint64) { + DeleteReceipts(db, hash, number) + deleteHeaderWithoutNumber(db, hash, number) + DeleteBody(db, hash, number) + DeleteTd(db, hash, number) +} + +// FindCommonAncestor returns the last common ancestor of two block headers +func FindCommonAncestor(db ethdb.Reader, a, b *types.Header) *types.Header { + for bn := b.Number.Uint64(); a.Number.Uint64() > bn; { + a = ReadHeader(db, a.ParentHash, a.Number.Uint64()-1) + if a == nil { + return nil + } + } + for an := a.Number.Uint64(); an < b.Number.Uint64(); { + b = ReadHeader(db, b.ParentHash, b.Number.Uint64()-1) + if b == nil { + return nil + } + } + for a.Hash() != b.Hash() { + a = ReadHeader(db, a.ParentHash, a.Number.Uint64()-1) + if a == nil { + return nil + } + b = ReadHeader(db, b.ParentHash, b.Number.Uint64()-1) + if b == nil { + return nil + } + } + return a +} + +// ReadHeadBlock returns the current canonical head block. +func ReadHeadBlock(db ethdb.Reader) *types.Block { + headBlockHash := ReadHeadBlockHash(db) + if headBlockHash == (common.Hash{}) { + return nil + } + headBlockNumber := ReadHeaderNumber(db, headBlockHash) + if headBlockNumber == nil { + return nil + } + return ReadBlock(db, headBlockHash, *headBlockNumber) +} diff --git a/core/rawdb/accessors_chain_test.go b/core/rawdb/accessors_chain_test.go new file mode 100644 index 0000000000..f39d4acff7 --- /dev/null +++ b/core/rawdb/accessors_chain_test.go @@ -0,0 +1,658 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "bytes" + "encoding/hex" + "fmt" + "io/ioutil" + "math/big" + "reflect" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" + "golang.org/x/crypto/sha3" +) + +// Tests block header storage and retrieval operations. +func TestHeaderStorage(t *testing.T) { + db := NewMemoryDatabase() + + // Create a test header to move around the database and make sure it's really new + header := &types.Header{Number: big.NewInt(42), Extra: []byte("test header")} + if entry := ReadHeader(db, header.Hash(), header.Number.Uint64()); entry != nil { + t.Fatalf("Non existent header returned: %v", entry) + } + // Write and verify the header in the database + WriteHeader(db, header) + if entry := ReadHeader(db, header.Hash(), header.Number.Uint64()); entry == nil { + t.Fatalf("Stored header not found") + } else if entry.Hash() != header.Hash() { + t.Fatalf("Retrieved header mismatch: have %v, want %v", entry, header) + } + if entry := ReadHeaderRLP(db, header.Hash(), header.Number.Uint64()); entry == nil { + t.Fatalf("Stored header RLP not found") + } else { + hasher := sha3.NewLegacyKeccak256() + hasher.Write(entry) + + if hash := common.BytesToHash(hasher.Sum(nil)); hash != header.Hash() { + t.Fatalf("Retrieved RLP header mismatch: have %v, want %v", entry, header) + } + } + // Delete the header and verify the execution + DeleteHeader(db, header.Hash(), header.Number.Uint64()) + if entry := ReadHeader(db, header.Hash(), header.Number.Uint64()); entry != nil { + t.Fatalf("Deleted header returned: %v", entry) + } +} + +// Tests block body storage and retrieval operations. +func TestBodyStorage(t *testing.T) { + db := NewMemoryDatabase() + + // Create a test body to move around the database and make sure it's really new + body := &types.Body{Uncles: []*types.Header{{Extra: []byte("test header")}}} + + hasher := sha3.NewLegacyKeccak256() + rlp.Encode(hasher, body) + hash := common.BytesToHash(hasher.Sum(nil)) + + if entry := ReadBody(db, hash, 0); entry != nil { + t.Fatalf("Non existent body returned: %v", entry) + } + // Write and verify the body in the database + WriteBody(db, hash, 0, body) + if entry := ReadBody(db, hash, 0); entry == nil { + t.Fatalf("Stored body not found") + } else if types.DeriveSha(types.Transactions(entry.Transactions), newHasher()) != types.DeriveSha(types.Transactions(body.Transactions), newHasher()) || types.CalcUncleHash(entry.Uncles) != types.CalcUncleHash(body.Uncles) { + t.Fatalf("Retrieved body mismatch: have %v, want %v", entry, body) + } + if entry := ReadBodyRLP(db, hash, 0); entry == nil { + t.Fatalf("Stored body RLP not found") + } else { + hasher := sha3.NewLegacyKeccak256() + hasher.Write(entry) + + if calc := common.BytesToHash(hasher.Sum(nil)); calc != hash { + t.Fatalf("Retrieved RLP body mismatch: have %v, want %v", entry, body) + } + } + // Delete the body and verify the execution + DeleteBody(db, hash, 0) + if entry := ReadBody(db, hash, 0); entry != nil { + t.Fatalf("Deleted body returned: %v", entry) + } +} + +// Tests block storage and retrieval operations. +func TestBlockStorage(t *testing.T) { + db := NewMemoryDatabase() + + // Create a test block to move around the database and make sure it's really new + block := types.NewBlockWithHeader(&types.Header{ + Extra: []byte("test block"), + UncleHash: types.EmptyUncleHash, + TxHash: types.EmptyRootHash, + ReceiptHash: types.EmptyRootHash, + }) + if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Non existent block returned: %v", entry) + } + if entry := ReadHeader(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Non existent header returned: %v", entry) + } + if entry := ReadBody(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Non existent body returned: %v", entry) + } + // Write and verify the block in the database + WriteBlock(db, block) + if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry == nil { + t.Fatalf("Stored block not found") + } else if entry.Hash() != block.Hash() { + t.Fatalf("Retrieved block mismatch: have %v, want %v", entry, block) + } + if entry := ReadHeader(db, block.Hash(), block.NumberU64()); entry == nil { + t.Fatalf("Stored header not found") + } else if entry.Hash() != block.Header().Hash() { + t.Fatalf("Retrieved header mismatch: have %v, want %v", entry, block.Header()) + } + if entry := ReadBody(db, block.Hash(), block.NumberU64()); entry == nil { + t.Fatalf("Stored body not found") + } else if types.DeriveSha(types.Transactions(entry.Transactions), newHasher()) != types.DeriveSha(block.Transactions(), newHasher()) || types.CalcUncleHash(entry.Uncles) != types.CalcUncleHash(block.Uncles()) { + t.Fatalf("Retrieved body mismatch: have %v, want %v", entry, block.Body()) + } + // Delete the block and verify the execution + DeleteBlock(db, block.Hash(), block.NumberU64()) + if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Deleted block returned: %v", entry) + } + if entry := ReadHeader(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Deleted header returned: %v", entry) + } + if entry := ReadBody(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Deleted body returned: %v", entry) + } +} + +// Tests that partial block contents don't get reassembled into full blocks. +func TestPartialBlockStorage(t *testing.T) { + db := NewMemoryDatabase() + block := types.NewBlockWithHeader(&types.Header{ + Extra: []byte("test block"), + UncleHash: types.EmptyUncleHash, + TxHash: types.EmptyRootHash, + ReceiptHash: types.EmptyRootHash, + }) + // Store a header and check that it's not recognized as a block + WriteHeader(db, block.Header()) + if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Non existent block returned: %v", entry) + } + DeleteHeader(db, block.Hash(), block.NumberU64()) + + // Store a body and check that it's not recognized as a block + WriteBody(db, block.Hash(), block.NumberU64(), block.Body()) + if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil { + t.Fatalf("Non existent block returned: %v", entry) + } + DeleteBody(db, block.Hash(), block.NumberU64()) + + // Store a header and a body separately and check reassembly + WriteHeader(db, block.Header()) + WriteBody(db, block.Hash(), block.NumberU64(), block.Body()) + + if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry == nil { + t.Fatalf("Stored block not found") + } else if entry.Hash() != block.Hash() { + t.Fatalf("Retrieved block mismatch: have %v, want %v", entry, block) + } +} + +// Tests block total difficulty storage and retrieval operations. +func TestTdStorage(t *testing.T) { + db := NewMemoryDatabase() + + // Create a test TD to move around the database and make sure it's really new + hash, td := common.Hash{}, big.NewInt(314) + if entry := ReadTd(db, hash, 0); entry != nil { + t.Fatalf("Non existent TD returned: %v", entry) + } + // Write and verify the TD in the database + WriteTd(db, hash, 0, td) + if entry := ReadTd(db, hash, 0); entry == nil { + t.Fatalf("Stored TD not found") + } else if entry.Cmp(td) != 0 { + t.Fatalf("Retrieved TD mismatch: have %v, want %v", entry, td) + } + // Delete the TD and verify the execution + DeleteTd(db, hash, 0) + if entry := ReadTd(db, hash, 0); entry != nil { + t.Fatalf("Deleted TD returned: %v", entry) + } +} + +// Tests that canonical numbers can be mapped to hashes and retrieved. +func TestCanonicalMappingStorage(t *testing.T) { + db := NewMemoryDatabase() + + // Create a test canonical number and assinged hash to move around + hash, number := common.Hash{0: 0xff}, uint64(314) + if entry := ReadCanonicalHash(db, number); entry != (common.Hash{}) { + t.Fatalf("Non existent canonical mapping returned: %v", entry) + } + // Write and verify the TD in the database + WriteCanonicalHash(db, hash, number) + if entry := ReadCanonicalHash(db, number); entry == (common.Hash{}) { + t.Fatalf("Stored canonical mapping not found") + } else if entry != hash { + t.Fatalf("Retrieved canonical mapping mismatch: have %v, want %v", entry, hash) + } + // Delete the TD and verify the execution + DeleteCanonicalHash(db, number) + if entry := ReadCanonicalHash(db, number); entry != (common.Hash{}) { + t.Fatalf("Deleted canonical mapping returned: %v", entry) + } +} + +// Tests that head headers and head blocks can be assigned, individually. +func TestHeadStorage(t *testing.T) { + db := NewMemoryDatabase() + + blockHead := types.NewBlockWithHeader(&types.Header{Extra: []byte("test block header")}) + blockFull := types.NewBlockWithHeader(&types.Header{Extra: []byte("test block full")}) + blockFast := types.NewBlockWithHeader(&types.Header{Extra: []byte("test block fast")}) + + // Check that no head entries are in a pristine database + if entry := ReadHeadHeaderHash(db); entry != (common.Hash{}) { + t.Fatalf("Non head header entry returned: %v", entry) + } + if entry := ReadHeadBlockHash(db); entry != (common.Hash{}) { + t.Fatalf("Non head block entry returned: %v", entry) + } + if entry := ReadHeadFastBlockHash(db); entry != (common.Hash{}) { + t.Fatalf("Non fast head block entry returned: %v", entry) + } + // Assign separate entries for the head header and block + WriteHeadHeaderHash(db, blockHead.Hash()) + WriteHeadBlockHash(db, blockFull.Hash()) + WriteHeadFastBlockHash(db, blockFast.Hash()) + + // Check that both heads are present, and different (i.e. two heads maintained) + if entry := ReadHeadHeaderHash(db); entry != blockHead.Hash() { + t.Fatalf("Head header hash mismatch: have %v, want %v", entry, blockHead.Hash()) + } + if entry := ReadHeadBlockHash(db); entry != blockFull.Hash() { + t.Fatalf("Head block hash mismatch: have %v, want %v", entry, blockFull.Hash()) + } + if entry := ReadHeadFastBlockHash(db); entry != blockFast.Hash() { + t.Fatalf("Fast head block hash mismatch: have %v, want %v", entry, blockFast.Hash()) + } +} + +// Tests that receipts associated with a single block can be stored and retrieved. +func TestBlockReceiptStorage(t *testing.T) { + db := NewMemoryDatabase() + + // Create a live block since we need metadata to reconstruct the receipt + tx1 := types.NewTransaction(1, common.HexToAddress("0x1"), big.NewInt(1), 1, big.NewInt(1), nil) + tx2 := types.NewTransaction(2, common.HexToAddress("0x2"), big.NewInt(2), 2, big.NewInt(2), nil) + + body := &types.Body{Transactions: types.Transactions{tx1, tx2}} + + // Create the two receipts to manage afterwards + receipt1 := &types.Receipt{ + Status: types.ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*types.Log{ + {Address: common.BytesToAddress([]byte{0x11})}, + {Address: common.BytesToAddress([]byte{0x01, 0x11})}, + }, + TxHash: tx1.Hash(), + ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}), + GasUsed: 111111, + } + receipt1.Bloom = types.CreateBloom(types.Receipts{receipt1}) + + receipt2 := &types.Receipt{ + PostState: common.Hash{2}.Bytes(), + CumulativeGasUsed: 2, + Logs: []*types.Log{ + {Address: common.BytesToAddress([]byte{0x22})}, + {Address: common.BytesToAddress([]byte{0x02, 0x22})}, + }, + TxHash: tx2.Hash(), + ContractAddress: common.BytesToAddress([]byte{0x02, 0x22, 0x22}), + GasUsed: 222222, + } + receipt2.Bloom = types.CreateBloom(types.Receipts{receipt2}) + receipts := []*types.Receipt{receipt1, receipt2} + + // Check that no receipt entries are in a pristine database + header := &types.Header{Number: big.NewInt(0), Extra: []byte("test header")} + hash := header.Hash() + if rs := ReadReceipts(db, hash, 0, params.TestChainConfig); len(rs) != 0 { + t.Fatalf("non existent receipts returned: %v", rs) + } + // Insert the body that corresponds to the receipts + WriteHeader(db, header) + WriteBody(db, hash, 0, body) + if header := ReadHeader(db, hash, 0); header == nil { + t.Fatal("header is nil") + } + + // Insert the receipt slice into the database and check presence + WriteReceipts(db, hash, 0, receipts) + if rs := ReadReceipts(db, hash, 0, params.TestChainConfig); len(rs) == 0 { + t.Fatalf("no receipts returned") + } else { + if err := checkReceiptsRLP(rs, receipts); err != nil { + t.Fatalf(err.Error()) + } + } + // Delete the body and ensure that the receipts are no longer returned (metadata can't be recomputed) + DeleteHeader(db, hash, 0) + DeleteBody(db, hash, 0) + if header := ReadHeader(db, hash, 0); header != nil { + t.Fatal("header is not nil") + } + if rs := ReadReceipts(db, hash, 0, params.TestChainConfig); rs != nil { + t.Fatalf("receipts returned when body was deleted: %v", rs) + } + // Ensure that receipts without metadata can be returned without the block body too + if err := checkReceiptsRLP(ReadRawReceipts(db, hash, 0), receipts); err != nil { + t.Fatalf(err.Error()) + } + // Sanity check that body and header alone without the receipt is a full purge + WriteHeader(db, header) + WriteBody(db, hash, 0, body) + + DeleteReceipts(db, hash, 0) + if rs := ReadReceipts(db, hash, 0, params.TestChainConfig); len(rs) != 0 { + t.Fatalf("deleted receipts returned: %v", rs) + } +} + +func checkReceiptsRLP(have, want types.Receipts) error { + if len(have) != len(want) { + return fmt.Errorf("receipts sizes mismatch: have %d, want %d", len(have), len(want)) + } + for i := 0; i < len(want); i++ { + rlpHave, err := rlp.EncodeToBytes(have[i]) + if err != nil { + return err + } + rlpWant, err := rlp.EncodeToBytes(want[i]) + if err != nil { + return err + } + if !bytes.Equal(rlpHave, rlpWant) { + return fmt.Errorf("receipt #%d: receipt mismatch: have %s, want %s", i, hex.EncodeToString(rlpHave), hex.EncodeToString(rlpWant)) + } + } + return nil +} + +func TestCanonicalHashIteration(t *testing.T) { + cases := []struct { + from, to uint64 + limit int + expect []uint64 + }{ + {1, 8, 0, nil}, + {1, 8, 1, []uint64{1}}, + {1, 8, 10, []uint64{1, 2, 3, 4, 5, 6, 7}}, + {1, 9, 10, []uint64{1, 2, 3, 4, 5, 6, 7, 8}}, + {2, 9, 10, []uint64{2, 3, 4, 5, 6, 7, 8}}, + {9, 10, 10, nil}, + } + // Test empty db iteration + db := NewMemoryDatabase() + numbers, _ := ReadAllCanonicalHashes(db, 0, 10, 10) + if len(numbers) != 0 { + t.Fatalf("No entry should be returned to iterate an empty db") + } + // Fill database with testing data. + for i := uint64(1); i <= 8; i++ { + WriteCanonicalHash(db, common.Hash{}, i) + WriteTd(db, common.Hash{}, i, big.NewInt(10)) // Write some interferential data + } + for i, c := range cases { + numbers, _ := ReadAllCanonicalHashes(db, c.from, c.to, c.limit) + if !reflect.DeepEqual(numbers, c.expect) { + t.Fatalf("Case %d failed, want %v, got %v", i, c.expect, numbers) + } + } +} + +func TestHashesInRange(t *testing.T) { + mkHeader := func(number, seq int) *types.Header { + h := types.Header{ + Difficulty: new(big.Int), + Number: big.NewInt(int64(number)), + GasLimit: uint64(seq), + } + return &h + } + db := NewMemoryDatabase() + // For each number, write N versions of that particular number + total := 0 + for i := 0; i < 15; i++ { + for ii := 0; ii < i; ii++ { + WriteHeader(db, mkHeader(i, ii)) + total++ + } + } + if have, want := len(ReadAllHashesInRange(db, 10, 10)), 10; have != want { + t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have) + } + if have, want := len(ReadAllHashesInRange(db, 10, 9)), 0; have != want { + t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have) + } + if have, want := len(ReadAllHashesInRange(db, 0, 100)), total; have != want { + t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have) + } + if have, want := len(ReadAllHashesInRange(db, 9, 10)), 9+10; have != want { + t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have) + } + if have, want := len(ReadAllHashes(db, 10)), 10; have != want { + t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have) + } + if have, want := len(ReadAllHashes(db, 16)), 0; have != want { + t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have) + } + if have, want := len(ReadAllHashes(db, 1)), 1; have != want { + t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have) + } +} + +type fullLogRLP struct { + Address common.Address + Topics []common.Hash + Data []byte + BlockNumber uint64 + TxHash common.Hash + TxIndex uint + BlockHash common.Hash + Index uint +} + +func newFullLogRLP(l *types.Log) *fullLogRLP { + return &fullLogRLP{ + Address: l.Address, + Topics: l.Topics, + Data: l.Data, + BlockNumber: l.BlockNumber, + TxHash: l.TxHash, + TxIndex: l.TxIndex, + BlockHash: l.BlockHash, + Index: l.Index, + } +} + +// Tests that logs associated with a single block can be retrieved. +func TestReadLogs(t *testing.T) { + db := NewMemoryDatabase() + + // Create a live block since we need metadata to reconstruct the receipt + tx1 := types.NewTransaction(1, common.HexToAddress("0x1"), big.NewInt(1), 1, big.NewInt(1), nil) + tx2 := types.NewTransaction(2, common.HexToAddress("0x2"), big.NewInt(2), 2, big.NewInt(2), nil) + + body := &types.Body{Transactions: types.Transactions{tx1, tx2}} + + // Create the two receipts to manage afterwards + receipt1 := &types.Receipt{ + Status: types.ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*types.Log{ + {Address: common.BytesToAddress([]byte{0x11})}, + {Address: common.BytesToAddress([]byte{0x01, 0x11})}, + }, + TxHash: tx1.Hash(), + ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}), + GasUsed: 111111, + } + receipt1.Bloom = types.CreateBloom(types.Receipts{receipt1}) + + receipt2 := &types.Receipt{ + PostState: common.Hash{2}.Bytes(), + CumulativeGasUsed: 2, + Logs: []*types.Log{ + {Address: common.BytesToAddress([]byte{0x22})}, + {Address: common.BytesToAddress([]byte{0x02, 0x22})}, + }, + TxHash: tx2.Hash(), + ContractAddress: common.BytesToAddress([]byte{0x02, 0x22, 0x22}), + GasUsed: 222222, + } + receipt2.Bloom = types.CreateBloom(types.Receipts{receipt2}) + receipts := []*types.Receipt{receipt1, receipt2} + + hash := common.BytesToHash([]byte{0x03, 0x14}) + // Check that no receipt entries are in a pristine database + if rs := ReadReceipts(db, hash, 0, params.TestChainConfig); len(rs) != 0 { + t.Fatalf("non existent receipts returned: %v", rs) + } + // Insert the body that corresponds to the receipts + WriteBody(db, hash, 0, body) + + // Insert the receipt slice into the database and check presence + WriteReceipts(db, hash, 0, receipts) + + logs := ReadLogs(db, hash, 0) + if len(logs) == 0 { + t.Fatalf("no logs returned") + } + if have, want := len(logs), 2; have != want { + t.Fatalf("unexpected number of logs returned, have %d want %d", have, want) + } + if have, want := len(logs[0]), 2; have != want { + t.Fatalf("unexpected number of logs[0] returned, have %d want %d", have, want) + } + if have, want := len(logs[1]), 2; have != want { + t.Fatalf("unexpected number of logs[1] returned, have %d want %d", have, want) + } + + // Fill in log fields so we can compare their rlp encoding + if err := types.Receipts(receipts).DeriveFields(params.TestChainConfig, hash, 0, 0, body.Transactions); err != nil { + t.Fatal(err) + } + for i, pr := range receipts { + for j, pl := range pr.Logs { + rlpHave, err := rlp.EncodeToBytes(newFullLogRLP(logs[i][j])) + if err != nil { + t.Fatal(err) + } + rlpWant, err := rlp.EncodeToBytes(newFullLogRLP(pl)) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(rlpHave, rlpWant) { + t.Fatalf("receipt #%d: receipt mismatch: have %s, want %s", i, hex.EncodeToString(rlpHave), hex.EncodeToString(rlpWant)) + } + } + } +} + +func TestDeriveLogFields(t *testing.T) { + // Create a few transactions to have receipts for + to2 := common.HexToAddress("0x2") + to3 := common.HexToAddress("0x3") + txs := types.Transactions{ + types.NewTx(&types.LegacyTx{ + Nonce: 1, + Value: big.NewInt(1), + Gas: 1, + GasPrice: big.NewInt(1), + }), + types.NewTx(&types.LegacyTx{ + To: &to2, + Nonce: 2, + Value: big.NewInt(2), + Gas: 2, + GasPrice: big.NewInt(2), + }), + types.NewTx(&types.AccessListTx{ + To: &to3, + Nonce: 3, + Value: big.NewInt(3), + Gas: 3, + GasPrice: big.NewInt(3), + }), + } + // Create the corresponding receipts + receipts := []*receiptLogs{ + { + Logs: []*types.Log{ + {Address: common.BytesToAddress([]byte{0x11})}, + {Address: common.BytesToAddress([]byte{0x01, 0x11})}, + }, + }, + { + Logs: []*types.Log{ + {Address: common.BytesToAddress([]byte{0x22})}, + {Address: common.BytesToAddress([]byte{0x02, 0x22})}, + }, + }, + { + Logs: []*types.Log{ + {Address: common.BytesToAddress([]byte{0x33})}, + {Address: common.BytesToAddress([]byte{0x03, 0x33})}, + }, + }, + } + + // Derive log metadata fields + number := big.NewInt(1) + hash := common.BytesToHash([]byte{0x03, 0x14}) + if err := deriveLogFields(receipts, hash, number.Uint64(), txs); err != nil { + t.Fatal(err) + } + + // Iterate over all the computed fields and check that they're correct + logIndex := uint(0) + for i := range receipts { + for j := range receipts[i].Logs { + if receipts[i].Logs[j].BlockNumber != number.Uint64() { + t.Errorf("receipts[%d].Logs[%d].BlockNumber = %d, want %d", i, j, receipts[i].Logs[j].BlockNumber, number.Uint64()) + } + if receipts[i].Logs[j].BlockHash != hash { + t.Errorf("receipts[%d].Logs[%d].BlockHash = %s, want %s", i, j, receipts[i].Logs[j].BlockHash.String(), hash.String()) + } + if receipts[i].Logs[j].TxHash != txs[i].Hash() { + t.Errorf("receipts[%d].Logs[%d].TxHash = %s, want %s", i, j, receipts[i].Logs[j].TxHash.String(), txs[i].Hash().String()) + } + if receipts[i].Logs[j].TxIndex != uint(i) { + t.Errorf("receipts[%d].Logs[%d].TransactionIndex = %d, want %d", i, j, receipts[i].Logs[j].TxIndex, i) + } + if receipts[i].Logs[j].Index != logIndex { + t.Errorf("receipts[%d].Logs[%d].Index = %d, want %d", i, j, receipts[i].Logs[j].Index, logIndex) + } + logIndex++ + } + } +} + +func BenchmarkDecodeRLPLogs(b *testing.B) { + // Encoded receipts from block 0x14ee094309fbe8f70b65f45ebcc08fb33f126942d97464aad5eb91cfd1e2d269 + buf, err := ioutil.ReadFile("testdata/stored_receipts.bin") + if err != nil { + b.Fatal(err) + } + b.Run("ReceiptForStorage", func(b *testing.B) { + b.ReportAllocs() + var r []*types.ReceiptForStorage + for i := 0; i < b.N; i++ { + if err := rlp.DecodeBytes(buf, &r); err != nil { + b.Fatal(err) + } + } + }) + b.Run("rlpLogs", func(b *testing.B) { + b.ReportAllocs() + var r []*receiptLogs + for i := 0; i < b.N; i++ { + if err := rlp.DecodeBytes(buf, &r); err != nil { + b.Fatal(err) + } + } + }) +} diff --git a/core/rawdb/accessors_indexes.go b/core/rawdb/accessors_indexes.go new file mode 100644 index 0000000000..0fdb50bb71 --- /dev/null +++ b/core/rawdb/accessors_indexes.go @@ -0,0 +1,187 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "bytes" + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// ReadTxLookupEntry retrieves the positional metadata associated with a transaction +// hash to allow retrieving the transaction or receipt by hash. +func ReadTxLookupEntry(db ethdb.Reader, hash common.Hash) *uint64 { + data, _ := db.Get(txLookupKey(hash)) + if len(data) == 0 { + return nil + } + // Database v6 tx lookup just stores the block number + if len(data) < common.HashLength { + number := new(big.Int).SetBytes(data).Uint64() + return &number + } + // Database v4-v5 tx lookup format just stores the hash + if len(data) == common.HashLength { + return ReadHeaderNumber(db, common.BytesToHash(data)) + } + // Finally try database v3 tx lookup format + var entry LegacyTxLookupEntry + if err := rlp.DecodeBytes(data, &entry); err != nil { + log.Error("Invalid transaction lookup entry RLP", "hash", hash, "blob", data, "err", err) + return nil + } + return &entry.BlockIndex +} + +// writeTxLookupEntry stores a positional metadata for a transaction, +// enabling hash based transaction and receipt lookups. +func writeTxLookupEntry(db ethdb.KeyValueWriter, hash common.Hash, numberBytes []byte) { + if err := db.Put(txLookupKey(hash), numberBytes); err != nil { + log.Crit("Failed to store transaction lookup entry", "err", err) + } +} + +// WriteTxLookupEntries is identical to WriteTxLookupEntry, but it works on +// a list of hashes +func WriteTxLookupEntries(db ethdb.KeyValueWriter, number uint64, hashes []common.Hash) { + numberBytes := new(big.Int).SetUint64(number).Bytes() + for _, hash := range hashes { + writeTxLookupEntry(db, hash, numberBytes) + } +} + +// WriteTxLookupEntriesByBlock stores a positional metadata for every transaction from +// a block, enabling hash based transaction and receipt lookups. +func WriteTxLookupEntriesByBlock(db ethdb.KeyValueWriter, block *types.Block) { + numberBytes := block.Number().Bytes() + for _, tx := range block.Transactions() { + writeTxLookupEntry(db, tx.Hash(), numberBytes) + } +} + +// DeleteTxLookupEntry removes all transaction data associated with a hash. +func DeleteTxLookupEntry(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Delete(txLookupKey(hash)); err != nil { + log.Crit("Failed to delete transaction lookup entry", "err", err) + } +} + +// DeleteTxLookupEntries removes all transaction lookups for a given block. +func DeleteTxLookupEntries(db ethdb.KeyValueWriter, hashes []common.Hash) { + for _, hash := range hashes { + DeleteTxLookupEntry(db, hash) + } +} + +// ReadTransaction retrieves a specific transaction from the database, along with +// its added positional metadata. +func ReadTransaction(db ethdb.Reader, hash common.Hash) (*types.Transaction, common.Hash, uint64, uint64) { + blockNumber := ReadTxLookupEntry(db, hash) + if blockNumber == nil { + return nil, common.Hash{}, 0, 0 + } + blockHash := ReadCanonicalHash(db, *blockNumber) + if blockHash == (common.Hash{}) { + return nil, common.Hash{}, 0, 0 + } + body := ReadBody(db, blockHash, *blockNumber) + if body == nil { + log.Error("Transaction referenced missing", "number", *blockNumber, "hash", blockHash) + return nil, common.Hash{}, 0, 0 + } + for txIndex, tx := range body.Transactions { + if tx.Hash() == hash { + return tx, blockHash, *blockNumber, uint64(txIndex) + } + } + log.Error("Transaction not found", "number", *blockNumber, "hash", blockHash, "txhash", hash) + return nil, common.Hash{}, 0, 0 +} + +// ReadReceipt retrieves a specific transaction receipt from the database, along with +// its added positional metadata. +func ReadReceipt(db ethdb.Reader, hash common.Hash, config *params.ChainConfig) (*types.Receipt, common.Hash, uint64, uint64) { + // Retrieve the context of the receipt based on the transaction hash + blockNumber := ReadTxLookupEntry(db, hash) + if blockNumber == nil { + return nil, common.Hash{}, 0, 0 + } + blockHash := ReadCanonicalHash(db, *blockNumber) + if blockHash == (common.Hash{}) { + return nil, common.Hash{}, 0, 0 + } + // Read all the receipts from the block and return the one with the matching hash + receipts := ReadReceipts(db, blockHash, *blockNumber, config) + for receiptIndex, receipt := range receipts { + if receipt.TxHash == hash { + return receipt, blockHash, *blockNumber, uint64(receiptIndex) + } + } + log.Error("Receipt not found", "number", *blockNumber, "hash", blockHash, "txhash", hash) + return nil, common.Hash{}, 0, 0 +} + +// ReadBloomBits retrieves the compressed bloom bit vector belonging to the given +// section and bit index from the. +func ReadBloomBits(db ethdb.KeyValueReader, bit uint, section uint64, head common.Hash) ([]byte, error) { + return db.Get(bloomBitsKey(bit, section, head)) +} + +// WriteBloomBits stores the compressed bloom bits vector belonging to the given +// section and bit index. +func WriteBloomBits(db ethdb.KeyValueWriter, bit uint, section uint64, head common.Hash, bits []byte) { + if err := db.Put(bloomBitsKey(bit, section, head), bits); err != nil { + log.Crit("Failed to store bloom bits", "err", err) + } +} + +// DeleteBloombits removes all compressed bloom bits vector belonging to the +// given section range and bit index. +func DeleteBloombits(db ethdb.Database, bit uint, from uint64, to uint64) { + start, end := bloomBitsKey(bit, from, common.Hash{}), bloomBitsKey(bit, to, common.Hash{}) + it := db.NewIterator(nil, start) + defer it.Release() + + for it.Next() { + if bytes.Compare(it.Key(), end) >= 0 { + break + } + if len(it.Key()) != len(bloomBitsPrefix)+2+8+32 { + continue + } + db.Delete(it.Key()) + } + if it.Error() != nil { + log.Crit("Failed to delete bloom bits", "err", it.Error()) + } +} diff --git a/core/rawdb/accessors_indexes_test.go b/core/rawdb/accessors_indexes_test.go new file mode 100644 index 0000000000..d044523b64 --- /dev/null +++ b/core/rawdb/accessors_indexes_test.go @@ -0,0 +1,181 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "bytes" + "hash" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" + "golang.org/x/crypto/sha3" +) + +// testHasher is the helper tool for transaction/receipt list hashing. +// The original hasher is trie, in order to get rid of import cycle, +// use the testing hasher instead. +type testHasher struct { + hasher hash.Hash +} + +func newHasher() *testHasher { + return &testHasher{hasher: sha3.NewLegacyKeccak256()} +} + +func (h *testHasher) Reset() { + h.hasher.Reset() +} + +func (h *testHasher) Update(key, val []byte) { + h.hasher.Write(key) + h.hasher.Write(val) +} + +func (h *testHasher) Hash() common.Hash { + return common.BytesToHash(h.hasher.Sum(nil)) +} + +// Tests that positional lookup metadata can be stored and retrieved. +func TestLookupStorage(t *testing.T) { + tests := []struct { + name string + writeTxLookupEntriesByBlock func(ethdb.Writer, *types.Block) + }{ + { + "DatabaseV6", + func(db ethdb.Writer, block *types.Block) { + WriteTxLookupEntriesByBlock(db, block) + }, + }, + { + "DatabaseV4-V5", + func(db ethdb.Writer, block *types.Block) { + for _, tx := range block.Transactions() { + db.Put(txLookupKey(tx.Hash()), block.Hash().Bytes()) + } + }, + }, + { + "DatabaseV3", + func(db ethdb.Writer, block *types.Block) { + for index, tx := range block.Transactions() { + entry := LegacyTxLookupEntry{ + BlockHash: block.Hash(), + BlockIndex: block.NumberU64(), + Index: uint64(index), + } + data, _ := rlp.EncodeToBytes(entry) + db.Put(txLookupKey(tx.Hash()), data) + } + }, + }, + } + + for _, tc := range tests { + t.Run(tc.name, func(t *testing.T) { + db := NewMemoryDatabase() + + tx1 := types.NewTransaction(1, common.BytesToAddress([]byte{0x11}), big.NewInt(111), 1111, big.NewInt(11111), []byte{0x11, 0x11, 0x11}) + tx2 := types.NewTransaction(2, common.BytesToAddress([]byte{0x22}), big.NewInt(222), 2222, big.NewInt(22222), []byte{0x22, 0x22, 0x22}) + tx3 := types.NewTransaction(3, common.BytesToAddress([]byte{0x33}), big.NewInt(333), 3333, big.NewInt(33333), []byte{0x33, 0x33, 0x33}) + txs := []*types.Transaction{tx1, tx2, tx3} + + block := types.NewBlock(&types.Header{Number: big.NewInt(314)}, txs, nil, nil, newHasher()) + + // Check that no transactions entries are in a pristine database + for i, tx := range txs { + if txn, _, _, _ := ReadTransaction(db, tx.Hash()); txn != nil { + t.Fatalf("tx #%d [%x]: non existent transaction returned: %v", i, tx.Hash(), txn) + } + } + // Insert all the transactions into the database, and verify contents + WriteCanonicalHash(db, block.Hash(), block.NumberU64()) + WriteBlock(db, block) + tc.writeTxLookupEntriesByBlock(db, block) + + for i, tx := range txs { + if txn, hash, number, index := ReadTransaction(db, tx.Hash()); txn == nil { + t.Fatalf("tx #%d [%x]: transaction not found", i, tx.Hash()) + } else { + if hash != block.Hash() || number != block.NumberU64() || index != uint64(i) { + t.Fatalf("tx #%d [%x]: positional metadata mismatch: have %x/%d/%d, want %x/%v/%v", i, tx.Hash(), hash, number, index, block.Hash(), block.NumberU64(), i) + } + if tx.Hash() != txn.Hash() { + t.Fatalf("tx #%d [%x]: transaction mismatch: have %v, want %v", i, tx.Hash(), txn, tx) + } + } + } + // Delete the transactions and check purge + for i, tx := range txs { + DeleteTxLookupEntry(db, tx.Hash()) + if txn, _, _, _ := ReadTransaction(db, tx.Hash()); txn != nil { + t.Fatalf("tx #%d [%x]: deleted transaction returned: %v", i, tx.Hash(), txn) + } + } + }) + } +} + +func TestDeleteBloomBits(t *testing.T) { + // Prepare testing data + db := NewMemoryDatabase() + + genesisHash0 := common.BytesToHash([]byte{1, 2, 3, 4, 5}) + genesisHash1 := common.BytesToHash([]byte{5, 4, 3, 2, 1}) + for i := uint(0); i < 2; i++ { + for s := uint64(0); s < 2; s++ { + WriteBloomBits(db, i, s, genesisHash0, []byte{0x01, 0x02}) + WriteBloomBits(db, i, s, genesisHash1, []byte{0x01, 0x02}) + } + } + check := func(bit uint, section uint64, head common.Hash, exist bool) { + bits, _ := ReadBloomBits(db, bit, section, head) + if exist && !bytes.Equal(bits, []byte{0x01, 0x02}) { + t.Fatalf("Bloombits mismatch") + } + if !exist && len(bits) > 0 { + t.Fatalf("Bloombits should be removed") + } + } + // Check the existence of written data. + check(0, 0, genesisHash0, true) + check(0, 0, genesisHash1, true) + + // Check the existence of deleted data. + DeleteBloombits(db, 0, 0, 1) + check(0, 0, genesisHash0, false) + check(0, 0, genesisHash1, false) + check(0, 1, genesisHash0, true) + check(0, 1, genesisHash1, true) + + // Check the existence of deleted data. + DeleteBloombits(db, 0, 0, 2) + check(0, 0, genesisHash0, false) + check(0, 0, genesisHash1, false) + check(0, 1, genesisHash0, false) + check(0, 1, genesisHash1, false) + + // Bit1 shouldn't be affect. + check(1, 0, genesisHash0, true) + check(1, 0, genesisHash1, true) + check(1, 1, genesisHash0, true) + check(1, 1, genesisHash1, true) +} diff --git a/core/rawdb/accessors_metadata.go b/core/rawdb/accessors_metadata.go new file mode 100644 index 0000000000..9d0ec9ae89 --- /dev/null +++ b/core/rawdb/accessors_metadata.go @@ -0,0 +1,91 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "encoding/json" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// ReadDatabaseVersion retrieves the version number of the database. +func ReadDatabaseVersion(db ethdb.KeyValueReader) *uint64 { + var version uint64 + + enc, _ := db.Get(databaseVersionKey) + if len(enc) == 0 { + return nil + } + if err := rlp.DecodeBytes(enc, &version); err != nil { + return nil + } + + return &version +} + +// WriteDatabaseVersion stores the version number of the database +func WriteDatabaseVersion(db ethdb.KeyValueWriter, version uint64) { + enc, err := rlp.EncodeToBytes(version) + if err != nil { + log.Crit("Failed to encode database version", "err", err) + } + if err = db.Put(databaseVersionKey, enc); err != nil { + log.Crit("Failed to store the database version", "err", err) + } +} + +// ReadChainConfig retrieves the consensus settings based on the given genesis hash. +func ReadChainConfig(db ethdb.KeyValueReader, hash common.Hash) *params.ChainConfig { + data, _ := db.Get(configKey(hash)) + if len(data) == 0 { + return nil + } + var config params.ChainConfig + if err := json.Unmarshal(data, &config); err != nil { + log.Error("Invalid chain config JSON", "hash", hash, "err", err) + return nil + } + return &config +} + +// WriteChainConfig writes the chain config settings to the database. +func WriteChainConfig(db ethdb.KeyValueWriter, hash common.Hash, cfg *params.ChainConfig) { + if cfg == nil { + return + } + data, err := json.Marshal(cfg) + if err != nil { + log.Crit("Failed to JSON encode chain config", "err", err) + } + if err := db.Put(configKey(hash), data); err != nil { + log.Crit("Failed to store chain config", "err", err) + } +} diff --git a/core/rawdb/accessors_snapshot.go b/core/rawdb/accessors_snapshot.go new file mode 100644 index 0000000000..6dd26ee50a --- /dev/null +++ b/core/rawdb/accessors_snapshot.go @@ -0,0 +1,213 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "encoding/binary" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +// ReadSnapshotRoot retrieves the root of the block whose state is contained in +// the persisted snapshot. +func ReadSnapshotRoot(db ethdb.KeyValueReader) common.Hash { + data, _ := db.Get(snapshotRootKey) + if len(data) != common.HashLength { + return common.Hash{} + } + return common.BytesToHash(data) +} + +// WriteSnapshotRoot stores the root of the block whose state is contained in +// the persisted snapshot. +func WriteSnapshotRoot(db ethdb.KeyValueWriter, root common.Hash) { + if err := db.Put(snapshotRootKey, root[:]); err != nil { + log.Crit("Failed to store snapshot root", "err", err) + } +} + +// DeleteSnapshotRoot deletes the root of the block whose state is contained in +// the persisted snapshot. Since snapshots are not immutable, this method can +// be used during updates, so a crash or failure will mark the entire snapshot +// invalid. +func DeleteSnapshotRoot(db ethdb.KeyValueWriter) { + if err := db.Delete(snapshotRootKey); err != nil { + log.Crit("Failed to remove snapshot root", "err", err) + } +} + +// ReadSnapshotBlockHash retrieves the hash of the block whose state is contained in +// the persisted snapshot. +func ReadSnapshotBlockHash(db ethdb.KeyValueReader) common.Hash { + data, _ := db.Get(snapshotBlockHashKey) + if len(data) != common.HashLength { + return common.Hash{} + } + return common.BytesToHash(data) +} + +// WriteSnapshotRoot stores the root of the block whose state is contained in +// the persisted snapshot. +func WriteSnapshotBlockHash(db ethdb.KeyValueWriter, blockHash common.Hash) { + if err := db.Put(snapshotBlockHashKey, blockHash[:]); err != nil { + log.Crit("Failed to store snapshot block hash", "err", err) + } +} + +// DeleteSnapshotBlockHash deletes the hash of the block whose state is contained in +// the persisted snapshot. Since snapshots are not immutable, this method can +// be used during updates, so a crash or failure will mark the entire snapshot +// invalid. +func DeleteSnapshotBlockHash(db ethdb.KeyValueWriter) { + if err := db.Delete(snapshotBlockHashKey); err != nil { + log.Crit("Failed to remove snapshot block hash", "err", err) + } +} + +// ReadAccountSnapshot retrieves the snapshot entry of an account trie leaf. +func ReadAccountSnapshot(db ethdb.KeyValueReader, hash common.Hash) []byte { + data, _ := db.Get(accountSnapshotKey(hash)) + return data +} + +// WriteAccountSnapshot stores the snapshot entry of an account trie leaf. +func WriteAccountSnapshot(db ethdb.KeyValueWriter, hash common.Hash, entry []byte) { + if err := db.Put(accountSnapshotKey(hash), entry); err != nil { + log.Crit("Failed to store account snapshot", "err", err) + } +} + +// DeleteAccountSnapshot removes the snapshot entry of an account trie leaf. +func DeleteAccountSnapshot(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Delete(accountSnapshotKey(hash)); err != nil { + log.Crit("Failed to delete account snapshot", "err", err) + } +} + +// ReadStorageSnapshot retrieves the snapshot entry of an storage trie leaf. +func ReadStorageSnapshot(db ethdb.KeyValueReader, accountHash, storageHash common.Hash) []byte { + data, _ := db.Get(storageSnapshotKey(accountHash, storageHash)) + return data +} + +// WriteStorageSnapshot stores the snapshot entry of an storage trie leaf. +func WriteStorageSnapshot(db ethdb.KeyValueWriter, accountHash, storageHash common.Hash, entry []byte) { + if err := db.Put(storageSnapshotKey(accountHash, storageHash), entry); err != nil { + log.Crit("Failed to store storage snapshot", "err", err) + } +} + +// DeleteStorageSnapshot removes the snapshot entry of an storage trie leaf. +func DeleteStorageSnapshot(db ethdb.KeyValueWriter, accountHash, storageHash common.Hash) { + if err := db.Delete(storageSnapshotKey(accountHash, storageHash)); err != nil { + log.Crit("Failed to delete storage snapshot", "err", err) + } +} + +// IterateStorageSnapshots returns an iterator for walking the entire storage +// space of a specific account. +func IterateStorageSnapshots(db ethdb.Iteratee, accountHash common.Hash) ethdb.Iterator { + return db.NewIterator(storageSnapshotsKey(accountHash), nil) +} + +// ReadSnapshotGenerator retrieves the serialized snapshot generator saved at +// the last shutdown. +func ReadSnapshotGenerator(db ethdb.KeyValueReader) []byte { + data, _ := db.Get(snapshotGeneratorKey) + return data +} + +// WriteSnapshotGenerator stores the serialized snapshot generator to save at +// shutdown. +func WriteSnapshotGenerator(db ethdb.KeyValueWriter, generator []byte) { + if err := db.Put(snapshotGeneratorKey, generator); err != nil { + log.Crit("Failed to store snapshot generator", "err", err) + } +} + +// DeleteSnapshotGenerator deletes the serialized snapshot generator saved at +// the last shutdown +func DeleteSnapshotGenerator(db ethdb.KeyValueWriter) { + if err := db.Delete(snapshotGeneratorKey); err != nil { + log.Crit("Failed to remove snapshot generator", "err", err) + } +} + +// ReadSnapshotRecoveryNumber retrieves the block number of the last persisted +// snapshot layer. +func ReadSnapshotRecoveryNumber(db ethdb.KeyValueReader) *uint64 { + data, _ := db.Get(snapshotRecoveryKey) + if len(data) == 0 { + return nil + } + if len(data) != 8 { + return nil + } + number := binary.BigEndian.Uint64(data) + return &number +} + +// WriteSnapshotRecoveryNumber stores the block number of the last persisted +// snapshot layer. +func WriteSnapshotRecoveryNumber(db ethdb.KeyValueWriter, number uint64) { + var buf [8]byte + binary.BigEndian.PutUint64(buf[:], number) + if err := db.Put(snapshotRecoveryKey, buf[:]); err != nil { + log.Crit("Failed to store snapshot recovery number", "err", err) + } +} + +// DeleteSnapshotRecoveryNumber deletes the block number of the last persisted +// snapshot layer. +func DeleteSnapshotRecoveryNumber(db ethdb.KeyValueWriter) { + if err := db.Delete(snapshotRecoveryKey); err != nil { + log.Crit("Failed to remove snapshot recovery number", "err", err) + } +} + +// ReadSnapshotSyncStatus retrieves the serialized sync status saved at shutdown. +func ReadSnapshotSyncStatus(db ethdb.KeyValueReader) []byte { + data, _ := db.Get(snapshotSyncStatusKey) + return data +} + +// WriteSnapshotSyncStatus stores the serialized sync status to save at shutdown. +func WriteSnapshotSyncStatus(db ethdb.KeyValueWriter, status []byte) { + if err := db.Put(snapshotSyncStatusKey, status); err != nil { + log.Crit("Failed to store snapshot sync status", "err", err) + } +} + +// DeleteSnapshotSyncStatus deletes the serialized sync status saved at the last +// shutdown +func DeleteSnapshotSyncStatus(db ethdb.KeyValueWriter) { + if err := db.Delete(snapshotSyncStatusKey); err != nil { + log.Crit("Failed to remove snapshot sync status", "err", err) + } +} diff --git a/core/rawdb/accessors_state.go b/core/rawdb/accessors_state.go new file mode 100644 index 0000000000..ffbd156484 --- /dev/null +++ b/core/rawdb/accessors_state.go @@ -0,0 +1,106 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +// ReadPreimage retrieves a single preimage of the provided hash. +func ReadPreimage(db ethdb.KeyValueReader, hash common.Hash) []byte { + data, _ := db.Get(preimageKey(hash)) + return data +} + +// WritePreimages writes the provided set of preimages to the database. +func WritePreimages(db ethdb.KeyValueWriter, preimages map[common.Hash][]byte) { + for hash, preimage := range preimages { + if err := db.Put(preimageKey(hash), preimage); err != nil { + log.Crit("Failed to store trie preimage", "err", err) + } + } + preimageCounter.Inc(int64(len(preimages))) + preimageHitCounter.Inc(int64(len(preimages))) +} + +// ReadCode retrieves the contract code of the provided code hash. +func ReadCode(db ethdb.KeyValueReader, hash common.Hash) []byte { + // Try with the legacy code scheme first, if not then try with current + // scheme. Since most of the code will be found with legacy scheme. + // + // todo(rjl493456442) change the order when we forcibly upgrade the code + // scheme with snapshot. + data, _ := db.Get(hash[:]) + if len(data) != 0 { + return data + } + return ReadCodeWithPrefix(db, hash) +} + +// ReadCodeWithPrefix retrieves the contract code of the provided code hash. +// The main difference between this function and ReadCode is this function +// will only check the existence with latest scheme(with prefix). +func ReadCodeWithPrefix(db ethdb.KeyValueReader, hash common.Hash) []byte { + data, _ := db.Get(codeKey(hash)) + return data +} + +// WriteCode writes the provided contract code database. +func WriteCode(db ethdb.KeyValueWriter, hash common.Hash, code []byte) { + if err := db.Put(codeKey(hash), code); err != nil { + log.Crit("Failed to store contract code", "err", err) + } +} + +// DeleteCode deletes the specified contract code from the database. +func DeleteCode(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Delete(codeKey(hash)); err != nil { + log.Crit("Failed to delete contract code", "err", err) + } +} + +// ReadTrieNode retrieves the trie node of the provided hash. +func ReadTrieNode(db ethdb.KeyValueReader, hash common.Hash) []byte { + data, _ := db.Get(hash.Bytes()) + return data +} + +// WriteTrieNode writes the provided trie node database. +func WriteTrieNode(db ethdb.KeyValueWriter, hash common.Hash, node []byte) { + if err := db.Put(hash.Bytes(), node); err != nil { + log.Crit("Failed to store trie node", "err", err) + } +} + +// DeleteTrieNode deletes the specified trie node from the database. +func DeleteTrieNode(db ethdb.KeyValueWriter, hash common.Hash) { + if err := db.Delete(hash.Bytes()); err != nil { + log.Crit("Failed to delete trie node", "err", err) + } +} diff --git a/core/rawdb/database.go b/core/rawdb/database.go new file mode 100644 index 0000000000..f9a34d6f82 --- /dev/null +++ b/core/rawdb/database.go @@ -0,0 +1,237 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "bytes" + "fmt" + "os" + "time" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/olekukonko/tablewriter" +) + +// nofreezedb is a database wrapper that disables freezer data retrievals. +type nofreezedb struct { + ethdb.KeyValueStore +} + +// NewDatabase creates a high level database on top of a given key-value data +// store without a freezer moving immutable chain segments into cold storage. +func NewDatabase(db ethdb.KeyValueStore) ethdb.Database { + return &nofreezedb{KeyValueStore: db} +} + +// NewMemoryDatabase creates an ephemeral in-memory key-value database without a +// freezer moving immutable chain segments into cold storage. +func NewMemoryDatabase() ethdb.Database { + return NewDatabase(memorydb.New()) +} + +// NewMemoryDatabaseWithCap creates an ephemeral in-memory key-value database +// with an initial starting capacity, but without a freezer moving immutable +// chain segments into cold storage. +func NewMemoryDatabaseWithCap(size int) ethdb.Database { + return NewDatabase(memorydb.NewWithCap(size)) +} + +type counter uint64 + +func (c counter) String() string { + return fmt.Sprintf("%d", c) +} + +func (c counter) Percentage(current uint64) string { + return fmt.Sprintf("%d", current*100/uint64(c)) +} + +// stat stores sizes and count for a parameter +type stat struct { + size common.StorageSize + count counter +} + +// Add size to the stat and increase the counter by 1 +func (s *stat) Add(size common.StorageSize) { + s.size += size + s.count++ +} + +func (s *stat) Size() string { + return s.size.String() +} + +func (s *stat) Count() string { + return s.count.String() +} + +// InspectDatabase traverses the entire database and checks the size +// of all different categories of data. +func InspectDatabase(db ethdb.Database, keyPrefix, keyStart []byte) error { + it := db.NewIterator(keyPrefix, keyStart) + defer it.Release() + + var ( + count int64 + start = time.Now() + logged = time.Now() + + // Key-value store statistics + headers stat + bodies stat + receipts stat + tds stat + numHashPairings stat + hashNumPairings stat + tries stat + codes stat + txLookups stat + accountSnaps stat + storageSnaps stat + preimages stat + bloomBits stat + cliqueSnaps stat + + // Les statistic + chtTrieNodes stat + bloomTrieNodes stat + + // Meta- and unaccounted data + metadata stat + unaccounted stat + + // Totals + total common.StorageSize + ) + // Inspect key-value database first. + for it.Next() { + var ( + key = it.Key() + size = common.StorageSize(len(key) + len(it.Value())) + ) + total += size + switch { + case bytes.HasPrefix(key, headerPrefix) && len(key) == (len(headerPrefix)+8+common.HashLength): + headers.Add(size) + case bytes.HasPrefix(key, blockBodyPrefix) && len(key) == (len(blockBodyPrefix)+8+common.HashLength): + bodies.Add(size) + case bytes.HasPrefix(key, blockReceiptsPrefix) && len(key) == (len(blockReceiptsPrefix)+8+common.HashLength): + receipts.Add(size) + case bytes.HasPrefix(key, headerPrefix) && bytes.HasSuffix(key, headerTDSuffix): + tds.Add(size) + case bytes.HasPrefix(key, headerPrefix) && bytes.HasSuffix(key, headerHashSuffix): + numHashPairings.Add(size) + case bytes.HasPrefix(key, headerNumberPrefix) && len(key) == (len(headerNumberPrefix)+common.HashLength): + hashNumPairings.Add(size) + case len(key) == common.HashLength: + tries.Add(size) + case bytes.HasPrefix(key, CodePrefix) && len(key) == len(CodePrefix)+common.HashLength: + codes.Add(size) + case bytes.HasPrefix(key, txLookupPrefix) && len(key) == (len(txLookupPrefix)+common.HashLength): + txLookups.Add(size) + case bytes.HasPrefix(key, SnapshotAccountPrefix) && len(key) == (len(SnapshotAccountPrefix)+common.HashLength): + accountSnaps.Add(size) + case bytes.HasPrefix(key, SnapshotStoragePrefix) && len(key) == (len(SnapshotStoragePrefix)+2*common.HashLength): + storageSnaps.Add(size) + case bytes.HasPrefix(key, preimagePrefix) && len(key) == (len(preimagePrefix)+common.HashLength): + preimages.Add(size) + case bytes.HasPrefix(key, configPrefix) && len(key) == (len(configPrefix)+common.HashLength): + metadata.Add(size) + case bytes.HasPrefix(key, bloomBitsPrefix) && len(key) == (len(bloomBitsPrefix)+10+common.HashLength): + bloomBits.Add(size) + case bytes.HasPrefix(key, BloomBitsIndexPrefix): + bloomBits.Add(size) + case bytes.HasPrefix(key, []byte("clique-")) && len(key) == 7+common.HashLength: + cliqueSnaps.Add(size) + case bytes.HasPrefix(key, []byte("cht-")) || + bytes.HasPrefix(key, []byte("chtIndexV2-")) || + bytes.HasPrefix(key, []byte("chtRootV2-")): // Canonical hash trie + chtTrieNodes.Add(size) + case bytes.HasPrefix(key, []byte("blt-")) || + bytes.HasPrefix(key, []byte("bltIndex-")) || + bytes.HasPrefix(key, []byte("bltRoot-")): // Bloomtrie sub + bloomTrieNodes.Add(size) + default: + var accounted bool + for _, meta := range [][]byte{ + databaseVersionKey, headHeaderKey, headBlockKey, headFastBlockKey, lastPivotKey, + fastTrieProgressKey, snapshotDisabledKey, snapshotRootKey, snapshotJournalKey, + snapshotGeneratorKey, snapshotRecoveryKey, txIndexTailKey, fastTxLookupLimitKey, + uncleanShutdownKey, badBlockKey, + } { + if bytes.Equal(key, meta) { + metadata.Add(size) + accounted = true + break + } + } + if !accounted { + unaccounted.Add(size) + } + } + count++ + if count%1000 == 0 && time.Since(logged) > 8*time.Second { + log.Info("Inspecting database", "count", count, "elapsed", common.PrettyDuration(time.Since(start))) + logged = time.Now() + } + } + // Display the database statistic. + stats := [][]string{ + {"Key-Value store", "Headers", headers.Size(), headers.Count()}, + {"Key-Value store", "Bodies", bodies.Size(), bodies.Count()}, + {"Key-Value store", "Receipt lists", receipts.Size(), receipts.Count()}, + {"Key-Value store", "Difficulties", tds.Size(), tds.Count()}, + {"Key-Value store", "Block number->hash", numHashPairings.Size(), numHashPairings.Count()}, + {"Key-Value store", "Block hash->number", hashNumPairings.Size(), hashNumPairings.Count()}, + {"Key-Value store", "Transaction index", txLookups.Size(), txLookups.Count()}, + {"Key-Value store", "Bloombit index", bloomBits.Size(), bloomBits.Count()}, + {"Key-Value store", "Contract codes", codes.Size(), codes.Count()}, + {"Key-Value store", "Trie nodes", tries.Size(), tries.Count()}, + {"Key-Value store", "Trie preimages", preimages.Size(), preimages.Count()}, + {"Key-Value store", "Account snapshot", accountSnaps.Size(), accountSnaps.Count()}, + {"Key-Value store", "Storage snapshot", storageSnaps.Size(), storageSnaps.Count()}, + {"Key-Value store", "Clique snapshots", cliqueSnaps.Size(), cliqueSnaps.Count()}, + {"Key-Value store", "Singleton metadata", metadata.Size(), metadata.Count()}, + {"Light client", "CHT trie nodes", chtTrieNodes.Size(), chtTrieNodes.Count()}, + {"Light client", "Bloom trie nodes", bloomTrieNodes.Size(), bloomTrieNodes.Count()}, + } + table := tablewriter.NewWriter(os.Stdout) + table.SetHeader([]string{"Database", "Category", "Size", "Items"}) + table.SetFooter([]string{"", "Total", total.String(), " "}) + table.AppendBulk(stats) + table.Render() + + if unaccounted.size > 0 { + log.Error("Database contains unaccounted data", "size", unaccounted.size, "count", unaccounted.count) + } + + return nil +} diff --git a/core/rawdb/schema.go b/core/rawdb/schema.go new file mode 100644 index 0000000000..67bdd63468 --- /dev/null +++ b/core/rawdb/schema.go @@ -0,0 +1,218 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package rawdb contains a collection of low level database accessors. +package rawdb + +import ( + "bytes" + "encoding/binary" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/metrics" +) + +// The fields below define the low level database schema prefixing. +var ( + // databaseVersionKey tracks the current database version. + databaseVersionKey = []byte("DatabaseVersion") + + // headHeaderKey tracks the latest known header's hash. + headHeaderKey = []byte("LastHeader") + + // headBlockKey tracks the latest known full block's hash. + headBlockKey = []byte("LastBlock") + + // headFastBlockKey tracks the latest known incomplete block's hash during fast sync. + headFastBlockKey = []byte("LastFast") + + // lastPivotKey tracks the last pivot block used by fast sync (to reenable on sethead). + lastPivotKey = []byte("LastPivot") + + // fastTrieProgressKey tracks the number of trie entries imported during fast sync. + fastTrieProgressKey = []byte("TrieSync") + + // snapshotDisabledKey flags that the snapshot should not be maintained due to initial sync. + snapshotDisabledKey = []byte("SnapshotDisabled") + + // snapshotRootKey tracks the hash of the last snapshot. + snapshotRootKey = []byte("SnapshotRoot") + + // snapshotBlockHashKey tracks the block hash of the last snapshot. + snapshotBlockHashKey = []byte("SnapshotBlockHash") + + // snapshotJournalKey tracks the in-memory diff layers across restarts. + snapshotJournalKey = []byte("SnapshotJournal") + + // snapshotGeneratorKey tracks the snapshot generation marker across restarts. + snapshotGeneratorKey = []byte("SnapshotGenerator") + + // snapshotRecoveryKey tracks the snapshot recovery marker across restarts. + snapshotRecoveryKey = []byte("SnapshotRecovery") + + // snapshotSyncStatusKey tracks the snapshot sync status across restarts. + snapshotSyncStatusKey = []byte("SnapshotSyncStatus") + + // txIndexTailKey tracks the oldest block whose transactions have been indexed. + txIndexTailKey = []byte("TransactionIndexTail") + + // fastTxLookupLimitKey tracks the transaction lookup limit during fast sync. + fastTxLookupLimitKey = []byte("FastTransactionLookupLimit") + + // badBlockKey tracks the list of bad blocks seen by local + badBlockKey = []byte("InvalidBlock") + + // uncleanShutdownKey tracks the list of local crashes + uncleanShutdownKey = []byte("unclean-shutdown") // config prefix for the db + + // Data item prefixes (use single byte to avoid mixing data types, avoid `i`, used for indexes). + headerPrefix = []byte("h") // headerPrefix + num (uint64 big endian) + hash -> header + headerTDSuffix = []byte("t") // headerPrefix + num (uint64 big endian) + hash + headerTDSuffix -> td + headerHashSuffix = []byte("n") // headerPrefix + num (uint64 big endian) + headerHashSuffix -> hash + headerNumberPrefix = []byte("H") // headerNumberPrefix + hash -> num (uint64 big endian) + + blockBodyPrefix = []byte("b") // blockBodyPrefix + num (uint64 big endian) + hash -> block body + blockReceiptsPrefix = []byte("r") // blockReceiptsPrefix + num (uint64 big endian) + hash -> block receipts + + txLookupPrefix = []byte("l") // txLookupPrefix + hash -> transaction/receipt lookup metadata + bloomBitsPrefix = []byte("B") // bloomBitsPrefix + bit (uint16 big endian) + section (uint64 big endian) + hash -> bloom bits + SnapshotAccountPrefix = []byte("a") // SnapshotAccountPrefix + account hash -> account trie value + SnapshotStoragePrefix = []byte("o") // SnapshotStoragePrefix + account hash + storage hash -> storage trie value + CodePrefix = []byte("c") // CodePrefix + code hash -> account code + + preimagePrefix = []byte("secure-key-") // preimagePrefix + hash -> preimage + configPrefix = []byte("ethereum-config-") // config prefix for the db + + // Chain index prefixes (use `i` + single byte to avoid mixing data types). + BloomBitsIndexPrefix = []byte("iB") // BloomBitsIndexPrefix is the data table of a chain indexer to track its progress + + preimageCounter = metrics.NewRegisteredCounter("db/preimage/total", nil) + preimageHitCounter = metrics.NewRegisteredCounter("db/preimage/hits", nil) +) + +// LegacyTxLookupEntry is the legacy TxLookupEntry definition with some unnecessary +// fields. +type LegacyTxLookupEntry struct { + BlockHash common.Hash + BlockIndex uint64 + Index uint64 +} + +// encodeBlockNumber encodes a block number as big endian uint64 +func encodeBlockNumber(number uint64) []byte { + enc := make([]byte, 8) + binary.BigEndian.PutUint64(enc, number) + return enc +} + +// headerKeyPrefix = headerPrefix + num (uint64 big endian) +func headerKeyPrefix(number uint64) []byte { + return append(headerPrefix, encodeBlockNumber(number)...) +} + +// headerKey = headerPrefix + num (uint64 big endian) + hash +func headerKey(number uint64, hash common.Hash) []byte { + return append(append(headerPrefix, encodeBlockNumber(number)...), hash.Bytes()...) +} + +// headerTDKey = headerPrefix + num (uint64 big endian) + hash + headerTDSuffix +func headerTDKey(number uint64, hash common.Hash) []byte { + return append(headerKey(number, hash), headerTDSuffix...) +} + +// headerHashKey = headerPrefix + num (uint64 big endian) + headerHashSuffix +func headerHashKey(number uint64) []byte { + return append(append(headerPrefix, encodeBlockNumber(number)...), headerHashSuffix...) +} + +// headerNumberKey = headerNumberPrefix + hash +func headerNumberKey(hash common.Hash) []byte { + return append(headerNumberPrefix, hash.Bytes()...) +} + +// blockBodyKey = blockBodyPrefix + num (uint64 big endian) + hash +func blockBodyKey(number uint64, hash common.Hash) []byte { + return append(append(blockBodyPrefix, encodeBlockNumber(number)...), hash.Bytes()...) +} + +// blockReceiptsKey = blockReceiptsPrefix + num (uint64 big endian) + hash +func blockReceiptsKey(number uint64, hash common.Hash) []byte { + return append(append(blockReceiptsPrefix, encodeBlockNumber(number)...), hash.Bytes()...) +} + +// txLookupKey = txLookupPrefix + hash +func txLookupKey(hash common.Hash) []byte { + return append(txLookupPrefix, hash.Bytes()...) +} + +// accountSnapshotKey = SnapshotAccountPrefix + hash +func accountSnapshotKey(hash common.Hash) []byte { + return append(SnapshotAccountPrefix, hash.Bytes()...) +} + +// storageSnapshotKey = SnapshotStoragePrefix + account hash + storage hash +func storageSnapshotKey(accountHash, storageHash common.Hash) []byte { + return append(append(SnapshotStoragePrefix, accountHash.Bytes()...), storageHash.Bytes()...) +} + +// storageSnapshotsKey = SnapshotStoragePrefix + account hash + storage hash +func storageSnapshotsKey(accountHash common.Hash) []byte { + return append(SnapshotStoragePrefix, accountHash.Bytes()...) +} + +// bloomBitsKey = bloomBitsPrefix + bit (uint16 big endian) + section (uint64 big endian) + hash +func bloomBitsKey(bit uint, section uint64, hash common.Hash) []byte { + key := append(append(bloomBitsPrefix, make([]byte, 10)...), hash.Bytes()...) + + binary.BigEndian.PutUint16(key[1:], uint16(bit)) + binary.BigEndian.PutUint64(key[3:], section) + + return key +} + +// preimageKey = preimagePrefix + hash +func preimageKey(hash common.Hash) []byte { + return append(preimagePrefix, hash.Bytes()...) +} + +// codeKey = CodePrefix + hash +func codeKey(hash common.Hash) []byte { + return append(CodePrefix, hash.Bytes()...) +} + +// IsCodeKey reports whether the given byte slice is the key of contract code, +// if so return the raw code hash as well. +func IsCodeKey(key []byte) (bool, []byte) { + if bytes.HasPrefix(key, CodePrefix) && len(key) == common.HashLength+len(CodePrefix) { + return true, key[len(CodePrefix):] + } + return false, nil +} + +// configKey = configPrefix + hash +func configKey(hash common.Hash) []byte { + return append(configPrefix, hash.Bytes()...) +} diff --git a/core/rawdb/table.go b/core/rawdb/table.go new file mode 100644 index 0000000000..609049fdae --- /dev/null +++ b/core/rawdb/table.go @@ -0,0 +1,231 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "github.com/ava-labs/subnet-evm/ethdb" +) + +// table is a wrapper around a database that prefixes each key access with a pre- +// configured string. +type table struct { + db ethdb.Database + prefix string +} + +// NewTable returns a database object that prefixes all keys with a given string. +func NewTable(db ethdb.Database, prefix string) ethdb.Database { + return &table{ + db: db, + prefix: prefix, + } +} + +// Close is a noop to implement the Database interface. +func (t *table) Close() error { + return nil +} + +// Has retrieves if a prefixed version of a key is present in the database. +func (t *table) Has(key []byte) (bool, error) { + return t.db.Has(append([]byte(t.prefix), key...)) +} + +// Get retrieves the given prefixed key if it's present in the database. +func (t *table) Get(key []byte) ([]byte, error) { + return t.db.Get(append([]byte(t.prefix), key...)) +} + +// Put inserts the given value into the database at a prefixed version of the +// provided key. +func (t *table) Put(key []byte, value []byte) error { + return t.db.Put(append([]byte(t.prefix), key...), value) +} + +// Delete removes the given prefixed key from the database. +func (t *table) Delete(key []byte) error { + return t.db.Delete(append([]byte(t.prefix), key...)) +} + +// NewIterator creates a binary-alphabetical iterator over a subset +// of database content with a particular key prefix, starting at a particular +// initial key (or after, if it does not exist). +func (t *table) NewIterator(prefix []byte, start []byte) ethdb.Iterator { + innerPrefix := append([]byte(t.prefix), prefix...) + iter := t.db.NewIterator(innerPrefix, start) + return &tableIterator{ + iter: iter, + prefix: t.prefix, + } +} + +// Stat returns a particular internal stat of the database. +func (t *table) Stat(property string) (string, error) { + return t.db.Stat(property) +} + +// Compact flattens the underlying data store for the given key range. In essence, +// deleted and overwritten versions are discarded, and the data is rearranged to +// reduce the cost of operations needed to access them. +// +// A nil start is treated as a key before all keys in the data store; a nil limit +// is treated as a key after all keys in the data store. If both is nil then it +// will compact entire data store. +func (t *table) Compact(start []byte, limit []byte) error { + // If no start was specified, use the table prefix as the first value + if start == nil { + start = []byte(t.prefix) + } else { + start = append([]byte(t.prefix), start...) + } + // If no limit was specified, use the first element not matching the prefix + // as the limit + if limit == nil { + limit = []byte(t.prefix) + for i := len(limit) - 1; i >= 0; i-- { + // Bump the current character, stopping if it doesn't overflow + limit[i]++ + if limit[i] > 0 { + break + } + // Character overflown, proceed to the next or nil if the last + if i == 0 { + limit = nil + } + } + } else { + limit = append([]byte(t.prefix), limit...) + } + // Range correctly calculated based on table prefix, delegate down + return t.db.Compact(start, limit) +} + +// NewBatch creates a write-only database that buffers changes to its host db +// until a final write is called, each operation prefixing all keys with the +// pre-configured string. +func (t *table) NewBatch() ethdb.Batch { + return &tableBatch{t.db.NewBatch(), t.prefix} +} + +// tableBatch is a wrapper around a database batch that prefixes each key access +// with a pre-configured string. +type tableBatch struct { + batch ethdb.Batch + prefix string +} + +// Put inserts the given value into the batch for later committing. +func (b *tableBatch) Put(key, value []byte) error { + return b.batch.Put(append([]byte(b.prefix), key...), value) +} + +// Delete inserts the a key removal into the batch for later committing. +func (b *tableBatch) Delete(key []byte) error { + return b.batch.Delete(append([]byte(b.prefix), key...)) +} + +// ValueSize retrieves the amount of data queued up for writing. +func (b *tableBatch) ValueSize() int { + return b.batch.ValueSize() +} + +// Write flushes any accumulated data to disk. +func (b *tableBatch) Write() error { + return b.batch.Write() +} + +// Reset resets the batch for reuse. +func (b *tableBatch) Reset() { + b.batch.Reset() +} + +// tableReplayer is a wrapper around a batch replayer which truncates +// the added prefix. +type tableReplayer struct { + w ethdb.KeyValueWriter + prefix string +} + +// Put implements the interface KeyValueWriter. +func (r *tableReplayer) Put(key []byte, value []byte) error { + trimmed := key[len(r.prefix):] + return r.w.Put(trimmed, value) +} + +// Delete implements the interface KeyValueWriter. +func (r *tableReplayer) Delete(key []byte) error { + trimmed := key[len(r.prefix):] + return r.w.Delete(trimmed) +} + +// Replay replays the batch contents. +func (b *tableBatch) Replay(w ethdb.KeyValueWriter) error { + return b.batch.Replay(&tableReplayer{w: w, prefix: b.prefix}) +} + +// tableIterator is a wrapper around a database iterator that prefixes each key access +// with a pre-configured string. +type tableIterator struct { + iter ethdb.Iterator + prefix string +} + +// Next moves the iterator to the next key/value pair. It returns whether the +// iterator is exhausted. +func (iter *tableIterator) Next() bool { + return iter.iter.Next() +} + +// Error returns any accumulated error. Exhausting all the key/value pairs +// is not considered to be an error. +func (iter *tableIterator) Error() error { + return iter.iter.Error() +} + +// Key returns the key of the current key/value pair, or nil if done. The caller +// should not modify the contents of the returned slice, and its contents may +// change on the next call to Next. +func (iter *tableIterator) Key() []byte { + key := iter.iter.Key() + if key == nil { + return nil + } + return key[len(iter.prefix):] +} + +// Value returns the value of the current key/value pair, or nil if done. The +// caller should not modify the contents of the returned slice, and its contents +// may change on the next call to Next. +func (iter *tableIterator) Value() []byte { + return iter.iter.Value() +} + +// Release releases associated resources. Release should always succeed and can +// be called multiple times without causing error. +func (iter *tableIterator) Release() { + iter.iter.Release() +} diff --git a/core/rawdb/table_test.go b/core/rawdb/table_test.go new file mode 100644 index 0000000000..e348e537d3 --- /dev/null +++ b/core/rawdb/table_test.go @@ -0,0 +1,138 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rawdb + +import ( + "bytes" + "testing" + + "github.com/ava-labs/subnet-evm/ethdb" +) + +func TestTableDatabase(t *testing.T) { testTableDatabase(t, "prefix") } +func TestEmptyPrefixTableDatabase(t *testing.T) { testTableDatabase(t, "") } + +type testReplayer struct { + puts [][]byte + dels [][]byte +} + +func (r *testReplayer) Put(key []byte, value []byte) error { + r.puts = append(r.puts, key) + return nil +} + +func (r *testReplayer) Delete(key []byte) error { + r.dels = append(r.dels, key) + return nil +} + +func testTableDatabase(t *testing.T, prefix string) { + db := NewTable(NewMemoryDatabase(), prefix) + + entries := []struct { + key []byte + value []byte + }{ + {[]byte{0x01, 0x02}, []byte{0x0a, 0x0b}}, + {[]byte{0x03, 0x04}, []byte{0x0c, 0x0d}}, + {[]byte{0x05, 0x06}, []byte{0x0e, 0x0f}}, + + {[]byte{0xff, 0xff, 0x01}, []byte{0x1a, 0x1b}}, + {[]byte{0xff, 0xff, 0x02}, []byte{0x1c, 0x1d}}, + {[]byte{0xff, 0xff, 0x03}, []byte{0x1e, 0x1f}}, + } + + // Test Put/Get operation + for _, entry := range entries { + db.Put(entry.key, entry.value) + } + for _, entry := range entries { + got, err := db.Get(entry.key) + if err != nil { + t.Fatalf("Failed to get value: %v", err) + } + if !bytes.Equal(got, entry.value) { + t.Fatalf("Value mismatch: want=%v, got=%v", entry.value, got) + } + } + + // Test batch operation + db = NewTable(NewMemoryDatabase(), prefix) + batch := db.NewBatch() + for _, entry := range entries { + batch.Put(entry.key, entry.value) + } + batch.Write() + for _, entry := range entries { + got, err := db.Get(entry.key) + if err != nil { + t.Fatalf("Failed to get value: %v", err) + } + if !bytes.Equal(got, entry.value) { + t.Fatalf("Value mismatch: want=%v, got=%v", entry.value, got) + } + } + + // Test batch replayer + r := &testReplayer{} + batch.Replay(r) + for index, entry := range entries { + got := r.puts[index] + if !bytes.Equal(got, entry.key) { + t.Fatalf("Key mismatch: want=%v, got=%v", entry.key, got) + } + } + + check := func(iter ethdb.Iterator, expCount, index int) { + count := 0 + for iter.Next() { + key, value := iter.Key(), iter.Value() + if !bytes.Equal(key, entries[index].key) { + t.Fatalf("Key mismatch: want=%v, got=%v", entries[index].key, key) + } + if !bytes.Equal(value, entries[index].value) { + t.Fatalf("Value mismatch: want=%v, got=%v", entries[index].value, value) + } + index += 1 + count++ + } + if count != expCount { + t.Fatalf("Wrong number of elems, exp %d got %d", expCount, count) + } + iter.Release() + } + // Test iterators + check(db.NewIterator(nil, nil), 6, 0) + // Test iterators with prefix + check(db.NewIterator([]byte{0xff, 0xff}, nil), 3, 3) + // Test iterators with start point + check(db.NewIterator(nil, []byte{0xff, 0xff, 0x02}), 2, 4) + // Test iterators with prefix and start point + check(db.NewIterator([]byte{0xee}, nil), 0, 0) + check(db.NewIterator(nil, []byte{0x00}), 6, 0) +} diff --git a/core/state/access_list.go b/core/state/access_list.go new file mode 100644 index 0000000000..d5044ccc5b --- /dev/null +++ b/core/state/access_list.go @@ -0,0 +1,146 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "github.com/ethereum/go-ethereum/common" +) + +type accessList struct { + addresses map[common.Address]int + slots []map[common.Hash]struct{} +} + +// ContainsAddress returns true if the address is in the access list. +func (al *accessList) ContainsAddress(address common.Address) bool { + _, ok := al.addresses[address] + return ok +} + +// Contains checks if a slot within an account is present in the access list, returning +// separate flags for the presence of the account and the slot respectively. +func (al *accessList) Contains(address common.Address, slot common.Hash) (addressPresent bool, slotPresent bool) { + idx, ok := al.addresses[address] + if !ok { + // no such address (and hence zero slots) + return false, false + } + if idx == -1 { + // address yes, but no slots + return true, false + } + _, slotPresent = al.slots[idx][slot] + return true, slotPresent +} + +// newAccessList creates a new accessList. +func newAccessList() *accessList { + return &accessList{ + addresses: make(map[common.Address]int), + } +} + +// Copy creates an independent copy of an accessList. +func (a *accessList) Copy() *accessList { + cp := newAccessList() + for k, v := range a.addresses { + cp.addresses[k] = v + } + cp.slots = make([]map[common.Hash]struct{}, len(a.slots)) + for i, slotMap := range a.slots { + newSlotmap := make(map[common.Hash]struct{}, len(slotMap)) + for k := range slotMap { + newSlotmap[k] = struct{}{} + } + cp.slots[i] = newSlotmap + } + return cp +} + +// AddAddress adds an address to the access list, and returns 'true' if the operation +// caused a change (addr was not previously in the list). +func (al *accessList) AddAddress(address common.Address) bool { + if _, present := al.addresses[address]; present { + return false + } + al.addresses[address] = -1 + return true +} + +// AddSlot adds the specified (addr, slot) combo to the access list. +// Return values are: +// - address added +// - slot added +// For any 'true' value returned, a corresponding journal entry must be made. +func (al *accessList) AddSlot(address common.Address, slot common.Hash) (addrChange bool, slotChange bool) { + idx, addrPresent := al.addresses[address] + if !addrPresent || idx == -1 { + // Address not present, or addr present but no slots there + al.addresses[address] = len(al.slots) + slotmap := map[common.Hash]struct{}{slot: {}} + al.slots = append(al.slots, slotmap) + return !addrPresent, true + } + // There is already an (address,slot) mapping + slotmap := al.slots[idx] + if _, ok := slotmap[slot]; !ok { + slotmap[slot] = struct{}{} + // Journal add slot change + return false, true + } + // No changes required + return false, false +} + +// DeleteSlot removes an (address, slot)-tuple from the access list. +// This operation needs to be performed in the same order as the addition happened. +// This method is meant to be used by the journal, which maintains ordering of +// operations. +func (al *accessList) DeleteSlot(address common.Address, slot common.Hash) { + idx, addrOk := al.addresses[address] + // There are two ways this can fail + if !addrOk { + panic("reverting slot change, address not present in list") + } + slotmap := al.slots[idx] + delete(slotmap, slot) + // If that was the last (first) slot, remove it + // Since additions and rollbacks are always performed in order, + // we can delete the item without worrying about screwing up later indices + if len(slotmap) == 0 { + al.slots = al.slots[:idx] + al.addresses[address] = -1 + } +} + +// DeleteAddress removes an address from the access list. This operation +// needs to be performed in the same order as the addition happened. +// This method is meant to be used by the journal, which maintains ordering of +// operations. +func (al *accessList) DeleteAddress(address common.Address) { + delete(al.addresses, address) +} diff --git a/core/state/database.go b/core/state/database.go new file mode 100644 index 0000000000..133aa50b69 --- /dev/null +++ b/core/state/database.go @@ -0,0 +1,214 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "errors" + "fmt" + + "github.com/VictoriaMetrics/fastcache" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + lru "github.com/hashicorp/golang-lru" +) + +const ( + // Number of codehash->size associations to keep. + codeSizeCacheSize = 100000 + + // Cache size granted for caching clean code. + codeCacheSize = 64 * 1024 * 1024 +) + +// Database wraps access to tries and contract code. +type Database interface { + // OpenTrie opens the main account trie. + OpenTrie(root common.Hash) (Trie, error) + + // OpenStorageTrie opens the storage trie of an account. + OpenStorageTrie(addrHash, root common.Hash) (Trie, error) + + // CopyTrie returns an independent copy of the given trie. + CopyTrie(Trie) Trie + + // ContractCode retrieves a particular contract's code. + ContractCode(addrHash, codeHash common.Hash) ([]byte, error) + + // ContractCodeSize retrieves a particular contracts code's size. + ContractCodeSize(addrHash, codeHash common.Hash) (int, error) + + // TrieDB retrieves the low level trie database used for data storage. + TrieDB() *trie.Database +} + +// Trie is a Ethereum Merkle Patricia trie. +type Trie interface { + // GetKey returns the sha3 preimage of a hashed key that was previously used + // to store a value. + // + // TODO(fjl): remove this when SecureTrie is removed + GetKey([]byte) []byte + + // TryGet returns the value for key stored in the trie. The value bytes must + // not be modified by the caller. If a node was not found in the database, a + // trie.MissingNodeError is returned. + TryGet(key []byte) ([]byte, error) + + // TryUpdateAccount abstract an account write in the trie. + TryUpdateAccount(key []byte, account *types.StateAccount) error + + // TryUpdate associates key with value in the trie. If value has length zero, any + // existing value is deleted from the trie. The value bytes must not be modified + // by the caller while they are stored in the trie. If a node was not found in the + // database, a trie.MissingNodeError is returned. + TryUpdate(key, value []byte) error + + // TryDelete removes any existing value for key from the trie. If a node was not + // found in the database, a trie.MissingNodeError is returned. + TryDelete(key []byte) error + + // Hash returns the root hash of the trie. It does not write to the database and + // can be used even if the trie doesn't have one. + Hash() common.Hash + + // Commit writes all nodes to the trie's memory database, tracking the internal + // and external (for account tries) references. + Commit(onleaf trie.LeafCallback) (common.Hash, int, error) + + // NodeIterator returns an iterator that returns nodes of the trie. Iteration + // starts at the key after the given start key. + NodeIterator(startKey []byte) trie.NodeIterator + + // Prove constructs a Merkle proof for key. The result contains all encoded nodes + // on the path to the value at key. The value itself is also included in the last + // node and can be retrieved by verifying the proof. + // + // If the trie does not contain a value for key, the returned proof contains all + // nodes of the longest existing prefix of the key (at least the root), ending + // with the node that proves the absence of the key. + Prove(key []byte, fromLevel uint, proofDb ethdb.KeyValueWriter) error +} + +// NewDatabase creates a backing store for state. The returned database is safe for +// concurrent use, but does not retain any recent trie nodes in memory. To keep some +// historical state in memory, use the NewDatabaseWithConfig constructor. +func NewDatabase(db ethdb.Database) Database { + return NewDatabaseWithConfig(db, nil) +} + +// NewDatabaseWithConfig creates a backing store for state. The returned database +// is safe for concurrent use and retains a lot of collapsed RLP trie nodes in a +// large memory cache. +func NewDatabaseWithConfig(db ethdb.Database, config *trie.Config) Database { + csc, _ := lru.New(codeSizeCacheSize) + return &cachingDB{ + db: trie.NewDatabaseWithConfig(db, config), + codeSizeCache: csc, + codeCache: fastcache.New(codeCacheSize), + } +} + +type cachingDB struct { + db *trie.Database + codeSizeCache *lru.Cache + codeCache *fastcache.Cache +} + +// OpenTrie opens the main account trie at a specific root hash. +func (db *cachingDB) OpenTrie(root common.Hash) (Trie, error) { + tr, err := trie.NewSecure(root, db.db) + if err != nil { + return nil, err + } + return tr, nil +} + +// OpenStorageTrie opens the storage trie of an account. +func (db *cachingDB) OpenStorageTrie(addrHash, root common.Hash) (Trie, error) { + tr, err := trie.NewSecure(root, db.db) + if err != nil { + return nil, err + } + return tr, nil +} + +// CopyTrie returns an independent copy of the given trie. +func (db *cachingDB) CopyTrie(t Trie) Trie { + switch t := t.(type) { + case *trie.SecureTrie: + return t.Copy() + default: + panic(fmt.Errorf("unknown trie type %T", t)) + } +} + +// ContractCode retrieves a particular contract's code. +func (db *cachingDB) ContractCode(addrHash, codeHash common.Hash) ([]byte, error) { + if code := db.codeCache.Get(nil, codeHash.Bytes()); len(code) > 0 { + return code, nil + } + code := rawdb.ReadCode(db.db.DiskDB(), codeHash) + if len(code) > 0 { + db.codeCache.Set(codeHash.Bytes(), code) + db.codeSizeCache.Add(codeHash, len(code)) + return code, nil + } + return nil, errors.New("not found") +} + +// ContractCodeWithPrefix retrieves a particular contract's code. If the +// code can't be found in the cache, then check the existence with **new** +// db scheme. +func (db *cachingDB) ContractCodeWithPrefix(addrHash, codeHash common.Hash) ([]byte, error) { + if code := db.codeCache.Get(nil, codeHash.Bytes()); len(code) > 0 { + return code, nil + } + code := rawdb.ReadCodeWithPrefix(db.db.DiskDB(), codeHash) + if len(code) > 0 { + db.codeCache.Set(codeHash.Bytes(), code) + db.codeSizeCache.Add(codeHash, len(code)) + return code, nil + } + return nil, errors.New("not found") +} + +// ContractCodeSize retrieves a particular contracts code's size. +func (db *cachingDB) ContractCodeSize(addrHash, codeHash common.Hash) (int, error) { + if cached, ok := db.codeSizeCache.Get(codeHash); ok { + return cached.(int), nil + } + code, err := db.ContractCode(addrHash, codeHash) + return len(code), err +} + +// TrieDB retrieves any intermediate trie-node caching layer. +func (db *cachingDB) TrieDB() *trie.Database { + return db.db +} diff --git a/core/state/dump.go b/core/state/dump.go new file mode 100644 index 0000000000..438a2d24cf --- /dev/null +++ b/core/state/dump.go @@ -0,0 +1,245 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "encoding/json" + "fmt" + "time" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// DumpConfig is a set of options to control what portions of the statewill be +// iterated and collected. +type DumpConfig struct { + SkipCode bool + SkipStorage bool + OnlyWithAddresses bool + Start []byte + Max uint64 +} + +// DumpCollector interface which the state trie calls during iteration +type DumpCollector interface { + // OnRoot is called with the state root + OnRoot(common.Hash) + // OnAccount is called once for each account in the trie + OnAccount(common.Address, DumpAccount) +} + +// DumpAccount represents an account in the state. +type DumpAccount struct { + Balance string `json:"balance"` + Nonce uint64 `json:"nonce"` + Root hexutil.Bytes `json:"root"` + CodeHash hexutil.Bytes `json:"codeHash"` + Code hexutil.Bytes `json:"code,omitempty"` + Storage map[common.Hash]string `json:"storage,omitempty"` + Address *common.Address `json:"address,omitempty"` // Address only present in iterative (line-by-line) mode + SecureKey hexutil.Bytes `json:"key,omitempty"` // If we don't have address, we can output the key + +} + +// Dump represents the full dump in a collected format, as one large map. +type Dump struct { + Root string `json:"root"` + Accounts map[common.Address]DumpAccount `json:"accounts"` +} + +// OnRoot implements DumpCollector interface +func (d *Dump) OnRoot(root common.Hash) { + d.Root = fmt.Sprintf("%x", root) +} + +// OnAccount implements DumpCollector interface +func (d *Dump) OnAccount(addr common.Address, account DumpAccount) { + d.Accounts[addr] = account +} + +// IteratorDump is an implementation for iterating over data. +type IteratorDump struct { + Root string `json:"root"` + Accounts map[common.Address]DumpAccount `json:"accounts"` + Next []byte `json:"next,omitempty"` // nil if no more accounts +} + +// OnRoot implements DumpCollector interface +func (d *IteratorDump) OnRoot(root common.Hash) { + d.Root = fmt.Sprintf("%x", root) +} + +// OnAccount implements DumpCollector interface +func (d *IteratorDump) OnAccount(addr common.Address, account DumpAccount) { + d.Accounts[addr] = account +} + +// iterativeDump is a DumpCollector-implementation which dumps output line-by-line iteratively. +type iterativeDump struct { + *json.Encoder +} + +// OnAccount implements DumpCollector interface +func (d iterativeDump) OnAccount(addr common.Address, account DumpAccount) { + dumpAccount := &DumpAccount{ + Balance: account.Balance, + Nonce: account.Nonce, + Root: account.Root, + CodeHash: account.CodeHash, + Code: account.Code, + Storage: account.Storage, + SecureKey: account.SecureKey, + Address: nil, + } + if addr != (common.Address{}) { + dumpAccount.Address = &addr + } + d.Encode(dumpAccount) +} + +// OnRoot implements DumpCollector interface +func (d iterativeDump) OnRoot(root common.Hash) { + d.Encode(struct { + Root common.Hash `json:"root"` + }{root}) +} + +// DumpToCollector iterates the state according to the given options and inserts +// the items into a collector for aggregation or serialization. +func (s *StateDB) DumpToCollector(c DumpCollector, conf *DumpConfig) (nextKey []byte) { + // Sanitize the input to allow nil configs + if conf == nil { + conf = new(DumpConfig) + } + var ( + missingPreimages int + accounts uint64 + start = time.Now() + logged = time.Now() + ) + log.Info("Trie dumping started", "root", s.trie.Hash()) + c.OnRoot(s.trie.Hash()) + + it := trie.NewIterator(s.trie.NodeIterator(conf.Start)) + for it.Next() { + var data types.StateAccount + if err := rlp.DecodeBytes(it.Value, &data); err != nil { + panic(err) + } + account := DumpAccount{ + Balance: data.Balance.String(), + Nonce: data.Nonce, + Root: data.Root[:], + CodeHash: data.CodeHash, + SecureKey: it.Key, + } + addrBytes := s.trie.GetKey(it.Key) + if addrBytes == nil { + // Preimage missing + missingPreimages++ + if conf.OnlyWithAddresses { + continue + } + account.SecureKey = it.Key + } + addr := common.BytesToAddress(addrBytes) + obj := newObject(s, addr, data) + if !conf.SkipCode { + account.Code = obj.Code(s.db) + } + if !conf.SkipStorage { + account.Storage = make(map[common.Hash]string) + storageIt := trie.NewIterator(obj.getTrie(s.db).NodeIterator(nil)) + for storageIt.Next() { + _, content, _, err := rlp.Split(storageIt.Value) + if err != nil { + log.Error("Failed to decode the value returned by iterator", "error", err) + continue + } + account.Storage[common.BytesToHash(s.trie.GetKey(storageIt.Key))] = common.Bytes2Hex(content) + } + } + c.OnAccount(addr, account) + accounts++ + if time.Since(logged) > 8*time.Second { + log.Info("Trie dumping in progress", "at", it.Key, "accounts", accounts, + "elapsed", common.PrettyDuration(time.Since(start))) + logged = time.Now() + } + if conf.Max > 0 && accounts >= conf.Max { + if it.Next() { + nextKey = it.Key + } + break + } + } + if missingPreimages > 0 { + log.Warn("Dump incomplete due to missing preimages", "missing", missingPreimages) + } + log.Info("Trie dumping complete", "accounts", accounts, + "elapsed", common.PrettyDuration(time.Since(start))) + + return nextKey +} + +// RawDump returns the entire state an a single large object +func (s *StateDB) RawDump(opts *DumpConfig) Dump { + dump := &Dump{ + Accounts: make(map[common.Address]DumpAccount), + } + s.DumpToCollector(dump, opts) + return *dump +} + +// Dump returns a JSON string representing the entire state as a single json-object +func (s *StateDB) Dump(opts *DumpConfig) []byte { + dump := s.RawDump(opts) + json, err := json.MarshalIndent(dump, "", " ") + if err != nil { + fmt.Println("Dump err", err) + } + return json +} + +// IterativeDump dumps out accounts as json-objects, delimited by linebreaks on stdout +func (s *StateDB) IterativeDump(opts *DumpConfig, output *json.Encoder) { + s.DumpToCollector(iterativeDump{output}, opts) +} + +// IteratorDump dumps out a batch of accounts starts with the given start key +func (s *StateDB) IteratorDump(opts *DumpConfig) IteratorDump { + iterator := &IteratorDump{ + Accounts: make(map[common.Address]DumpAccount), + } + iterator.Next = s.DumpToCollector(iterator, opts) + return *iterator +} diff --git a/core/state/iterator.go b/core/state/iterator.go new file mode 100644 index 0000000000..a4d55090fd --- /dev/null +++ b/core/state/iterator.go @@ -0,0 +1,165 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "bytes" + "fmt" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" +) + +// NodeIterator is an iterator to traverse the entire state trie post-order, +// including all of the contract code and contract state tries. +type NodeIterator struct { + state *StateDB // State being iterated + + stateIt trie.NodeIterator // Primary iterator for the global state trie + dataIt trie.NodeIterator // Secondary iterator for the data trie of a contract + + accountHash common.Hash // Hash of the node containing the account + codeHash common.Hash // Hash of the contract source code + code []byte // Source code associated with a contract + + Hash common.Hash // Hash of the current entry being iterated (nil if not standalone) + Parent common.Hash // Hash of the first full ancestor node (nil if current is the root) + + Error error // Failure set in case of an internal error in the iterator +} + +// NewNodeIterator creates an post-order state node iterator. +func NewNodeIterator(state *StateDB) *NodeIterator { + return &NodeIterator{ + state: state, + } +} + +// Next moves the iterator to the next node, returning whether there are any +// further nodes. In case of an internal error this method returns false and +// sets the Error field to the encountered failure. +func (it *NodeIterator) Next() bool { + // If the iterator failed previously, don't do anything + if it.Error != nil { + return false + } + // Otherwise step forward with the iterator and report any errors + if err := it.step(); err != nil { + it.Error = err + return false + } + return it.retrieve() +} + +// step moves the iterator to the next entry of the state trie. +func (it *NodeIterator) step() error { + // Abort if we reached the end of the iteration + if it.state == nil { + return nil + } + // Initialize the iterator if we've just started + if it.stateIt == nil { + it.stateIt = it.state.trie.NodeIterator(nil) + } + // If we had data nodes previously, we surely have at least state nodes + if it.dataIt != nil { + if cont := it.dataIt.Next(true); !cont { + if it.dataIt.Error() != nil { + return it.dataIt.Error() + } + it.dataIt = nil + } + return nil + } + // If we had source code previously, discard that + if it.code != nil { + it.code = nil + return nil + } + // Step to the next state trie node, terminating if we're out of nodes + if cont := it.stateIt.Next(true); !cont { + if it.stateIt.Error() != nil { + return it.stateIt.Error() + } + it.state, it.stateIt = nil, nil + return nil + } + // If the state trie node is an internal entry, leave as is + if !it.stateIt.Leaf() { + return nil + } + // Otherwise we've reached an account node, initiate data iteration + var account types.StateAccount + if err := rlp.Decode(bytes.NewReader(it.stateIt.LeafBlob()), &account); err != nil { + return err + } + dataTrie, err := it.state.db.OpenStorageTrie(common.BytesToHash(it.stateIt.LeafKey()), account.Root) + if err != nil { + return err + } + it.dataIt = dataTrie.NodeIterator(nil) + if !it.dataIt.Next(true) { + it.dataIt = nil + } + if !bytes.Equal(account.CodeHash, emptyCodeHash) { + it.codeHash = common.BytesToHash(account.CodeHash) + addrHash := common.BytesToHash(it.stateIt.LeafKey()) + it.code, err = it.state.db.ContractCode(addrHash, common.BytesToHash(account.CodeHash)) + if err != nil { + return fmt.Errorf("code %x: %v", account.CodeHash, err) + } + } + it.accountHash = it.stateIt.Parent() + return nil +} + +// retrieve pulls and caches the current state entry the iterator is traversing. +// The method returns whether there are any more data left for inspection. +func (it *NodeIterator) retrieve() bool { + // Clear out any previously set values + it.Hash = common.Hash{} + + // If the iteration's done, return no available data + if it.state == nil { + return false + } + // Otherwise retrieve the current entry + switch { + case it.dataIt != nil: + it.Hash, it.Parent = it.dataIt.Hash(), it.dataIt.Parent() + if it.Parent == (common.Hash{}) { + it.Parent = it.accountHash + } + case it.code != nil: + it.Hash, it.Parent = it.codeHash, it.accountHash + case it.stateIt != nil: + it.Hash, it.Parent = it.stateIt.Hash(), it.stateIt.Parent() + } + return true +} diff --git a/core/state/journal.go b/core/state/journal.go new file mode 100644 index 0000000000..7dcf2d6093 --- /dev/null +++ b/core/state/journal.go @@ -0,0 +1,279 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +// journalEntry is a modification entry in the state change journal that can be +// reverted on demand. +type journalEntry interface { + // revert undoes the changes introduced by this journal entry. + revert(*StateDB) + + // dirtied returns the Ethereum address modified by this journal entry. + dirtied() *common.Address +} + +// journal contains the list of state modifications applied since the last state +// commit. These are tracked to be able to be reverted in the case of an execution +// exception or request for reversal. +type journal struct { + entries []journalEntry // Current changes tracked by the journal + dirties map[common.Address]int // Dirty accounts and the number of changes +} + +// newJournal creates a new initialized journal. +func newJournal() *journal { + return &journal{ + dirties: make(map[common.Address]int), + } +} + +// append inserts a new modification entry to the end of the change journal. +func (j *journal) append(entry journalEntry) { + j.entries = append(j.entries, entry) + if addr := entry.dirtied(); addr != nil { + j.dirties[*addr]++ + } +} + +// revert undoes a batch of journalled modifications along with any reverted +// dirty handling too. +func (j *journal) revert(statedb *StateDB, snapshot int) { + for i := len(j.entries) - 1; i >= snapshot; i-- { + // Undo the changes made by the operation + j.entries[i].revert(statedb) + + // Drop any dirty tracking induced by the change + if addr := j.entries[i].dirtied(); addr != nil { + if j.dirties[*addr]--; j.dirties[*addr] == 0 { + delete(j.dirties, *addr) + } + } + } + j.entries = j.entries[:snapshot] +} + +// dirty explicitly sets an address to dirty, even if the change entries would +// otherwise suggest it as clean. This method is an ugly hack to handle the RIPEMD +// precompile consensus exception. +func (j *journal) dirty(addr common.Address) { + j.dirties[addr]++ +} + +// length returns the current number of entries in the journal. +func (j *journal) length() int { + return len(j.entries) +} + +type ( + // Changes to the account trie. + createObjectChange struct { + account *common.Address + } + resetObjectChange struct { + prev *stateObject + prevdestruct bool + } + suicideChange struct { + account *common.Address + prev bool // whether account had already suicided + prevbalance *big.Int + } + + // Changes to individual accounts. + balanceChange struct { + account *common.Address + prev *big.Int + } + nonceChange struct { + account *common.Address + prev uint64 + } + storageChange struct { + account *common.Address + key, prevalue common.Hash + } + codeChange struct { + account *common.Address + prevcode, prevhash []byte + } + + // Changes to other state values. + refundChange struct { + prev uint64 + } + addLogChange struct { + txhash common.Hash + } + addPreimageChange struct { + hash common.Hash + } + touchChange struct { + account *common.Address + } + // Changes to the access list + accessListAddAccountChange struct { + address *common.Address + } + accessListAddSlotChange struct { + address *common.Address + slot *common.Hash + } +) + +func (ch createObjectChange) revert(s *StateDB) { + delete(s.stateObjects, *ch.account) + delete(s.stateObjectsDirty, *ch.account) +} + +func (ch createObjectChange) dirtied() *common.Address { + return ch.account +} + +func (ch resetObjectChange) revert(s *StateDB) { + s.setStateObject(ch.prev) + if !ch.prevdestruct && s.snap != nil { + delete(s.snapDestructs, ch.prev.addrHash) + } +} + +func (ch resetObjectChange) dirtied() *common.Address { + return nil +} + +func (ch suicideChange) revert(s *StateDB) { + obj := s.getStateObject(*ch.account) + if obj != nil { + obj.suicided = ch.prev + obj.setBalance(ch.prevbalance) + } +} + +func (ch suicideChange) dirtied() *common.Address { + return ch.account +} + +var ripemd = common.HexToAddress("0000000000000000000000000000000000000003") + +func (ch touchChange) revert(s *StateDB) { +} + +func (ch touchChange) dirtied() *common.Address { + return ch.account +} + +func (ch balanceChange) revert(s *StateDB) { + s.getStateObject(*ch.account).setBalance(ch.prev) +} + +func (ch balanceChange) dirtied() *common.Address { + return ch.account +} + +func (ch nonceChange) revert(s *StateDB) { + s.getStateObject(*ch.account).setNonce(ch.prev) +} + +func (ch nonceChange) dirtied() *common.Address { + return ch.account +} + +func (ch codeChange) revert(s *StateDB) { + s.getStateObject(*ch.account).setCode(common.BytesToHash(ch.prevhash), ch.prevcode) +} + +func (ch codeChange) dirtied() *common.Address { + return ch.account +} + +func (ch storageChange) revert(s *StateDB) { + s.getStateObject(*ch.account).setState(ch.key, ch.prevalue) +} + +func (ch storageChange) dirtied() *common.Address { + return ch.account +} + +func (ch refundChange) revert(s *StateDB) { + s.refund = ch.prev +} + +func (ch refundChange) dirtied() *common.Address { + return nil +} + +func (ch addLogChange) revert(s *StateDB) { + logs := s.logs[ch.txhash] + if len(logs) == 1 { + delete(s.logs, ch.txhash) + } else { + s.logs[ch.txhash] = logs[:len(logs)-1] + } + s.logSize-- +} + +func (ch addLogChange) dirtied() *common.Address { + return nil +} + +func (ch addPreimageChange) revert(s *StateDB) { + delete(s.preimages, ch.hash) +} + +func (ch addPreimageChange) dirtied() *common.Address { + return nil +} + +func (ch accessListAddAccountChange) revert(s *StateDB) { + /* + One important invariant here, is that whenever a (addr, slot) is added, if the + addr is not already present, the add causes two journal entries: + - one for the address, + - one for the (address,slot) + Therefore, when unrolling the change, we can always blindly delete the + (addr) at this point, since no storage adds can remain when come upon + a single (addr) change. + */ + s.accessList.DeleteAddress(*ch.address) +} + +func (ch accessListAddAccountChange) dirtied() *common.Address { + return nil +} + +func (ch accessListAddSlotChange) revert(s *StateDB) { + s.accessList.DeleteSlot(*ch.address, *ch.slot) +} + +func (ch accessListAddSlotChange) dirtied() *common.Address { + return nil +} diff --git a/core/state/metrics.go b/core/state/metrics.go new file mode 100644 index 0000000000..547897cf9b --- /dev/null +++ b/core/state/metrics.go @@ -0,0 +1,38 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import "github.com/ethereum/go-ethereum/metrics" + +var ( + accountUpdatedMeter = metrics.NewRegisteredMeter("state/update/account", nil) + storageUpdatedMeter = metrics.NewRegisteredMeter("state/update/storage", nil) + accountDeletedMeter = metrics.NewRegisteredMeter("state/delete/account", nil) + storageDeletedMeter = metrics.NewRegisteredMeter("state/delete/storage", nil) + accountCommittedMeter = metrics.NewRegisteredMeter("state/commit/account", nil) + storageCommittedMeter = metrics.NewRegisteredMeter("state/commit/storage", nil) +) diff --git a/core/state/snapshot/account.go b/core/state/snapshot/account.go new file mode 100644 index 0000000000..85bd6deb22 --- /dev/null +++ b/core/state/snapshot/account.go @@ -0,0 +1,96 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" +) + +// Account is a modified version of a state.Account, where the root is replaced +// with a byte slice. This format can be used to represent full-consensus format +// or slim-snapshot format which replaces the empty root and code hash as nil +// byte slice. +type Account struct { + Nonce uint64 + Balance *big.Int + Root []byte + CodeHash []byte +} + +// SlimAccount converts a state.Account content into a slim snapshot account +func SlimAccount(nonce uint64, balance *big.Int, root common.Hash, codehash []byte) Account { + slim := Account{ + Nonce: nonce, + Balance: balance, + } + if root != emptyRoot { + slim.Root = root[:] + } + if !bytes.Equal(codehash, emptyCode[:]) { + slim.CodeHash = codehash + } + return slim +} + +// SlimAccountRLP converts a state.Account content into a slim snapshot +// version RLP encoded. +func SlimAccountRLP(nonce uint64, balance *big.Int, root common.Hash, codehash []byte) []byte { + data, err := rlp.EncodeToBytes(SlimAccount(nonce, balance, root, codehash)) + if err != nil { + panic(err) + } + return data +} + +// FullAccount decodes the data on the 'slim RLP' format and return +// the consensus format account. +func FullAccount(data []byte) (Account, error) { + var account Account + if err := rlp.DecodeBytes(data, &account); err != nil { + return Account{}, err + } + if len(account.Root) == 0 { + account.Root = emptyRoot[:] + } + if len(account.CodeHash) == 0 { + account.CodeHash = emptyCode[:] + } + return account, nil +} + +// FullAccountRLP converts data on the 'slim RLP' format into the full RLP-format. +func FullAccountRLP(data []byte) ([]byte, error) { + account, err := FullAccount(data) + if err != nil { + return nil, err + } + return rlp.EncodeToBytes(account) +} diff --git a/core/state/snapshot/conversion.go b/core/state/snapshot/conversion.go new file mode 100644 index 0000000000..8b1bce498e --- /dev/null +++ b/core/state/snapshot/conversion.go @@ -0,0 +1,384 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "encoding/binary" + "errors" + "fmt" + "math" + "runtime" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// trieKV represents a trie key-value pair +type trieKV struct { + key common.Hash + value []byte +} + +type ( + // trieGeneratorFn is the interface of trie generation which can + // be implemented by different trie algorithm. + trieGeneratorFn func(db ethdb.KeyValueWriter, in chan (trieKV), out chan (common.Hash)) + + // leafCallbackFn is the callback invoked at the leaves of the trie, + // returns the subtrie root with the specified subtrie identifier. + leafCallbackFn func(db ethdb.KeyValueWriter, accountHash, codeHash common.Hash, stat *generateStats) (common.Hash, error) +) + +// GenerateAccountTrieRoot takes an account iterator and reproduces the root hash. +func GenerateAccountTrieRoot(it AccountIterator) (common.Hash, error) { + return generateTrieRoot(nil, it, common.Hash{}, stackTrieGenerate, nil, newGenerateStats(), true) +} + +// GenerateStorageTrieRoot takes a storage iterator and reproduces the root hash. +func GenerateStorageTrieRoot(account common.Hash, it StorageIterator) (common.Hash, error) { + return generateTrieRoot(nil, it, account, stackTrieGenerate, nil, newGenerateStats(), true) +} + +// GenerateTrie takes the whole snapshot tree as the input, traverses all the +// accounts as well as the corresponding storages and regenerate the whole state +// (account trie + all storage tries). +func GenerateTrie(snaptree *Tree, root common.Hash, src ethdb.Database, dst ethdb.KeyValueWriter) error { + // Traverse all state by snapshot, re-generate the whole state trie + acctIt, err := snaptree.AccountIterator(root, common.Hash{}, false) + if err != nil { + return err // The required snapshot might not exist. + } + defer acctIt.Release() + + got, err := generateTrieRoot(dst, acctIt, common.Hash{}, stackTrieGenerate, func(dst ethdb.KeyValueWriter, accountHash, codeHash common.Hash, stat *generateStats) (common.Hash, error) { + // Migrate the code first, commit the contract code into the tmp db. + if codeHash != emptyCode { + code := rawdb.ReadCode(src, codeHash) + if len(code) == 0 { + return common.Hash{}, errors.New("failed to read contract code") + } + rawdb.WriteCode(dst, codeHash, code) + } + // Then migrate all storage trie nodes into the tmp db. + storageIt, err := snaptree.StorageIterator(root, accountHash, common.Hash{}, false) + if err != nil { + return common.Hash{}, err + } + defer storageIt.Release() + + hash, err := generateTrieRoot(dst, storageIt, accountHash, stackTrieGenerate, nil, stat, false) + if err != nil { + return common.Hash{}, err + } + return hash, nil + }, newGenerateStats(), true) + if err != nil { + return err + } + if got != root { + return fmt.Errorf("state root hash mismatch: got %x, want %x", got, root) + } + return nil +} + +// generateStats is a collection of statistics gathered by the trie generator +// for logging purposes. +type generateStats struct { + head common.Hash + start time.Time + + accounts uint64 // Number of accounts done (including those being crawled) + slots uint64 // Number of storage slots done (including those being crawled) + + slotsStart map[common.Hash]time.Time // Start time for account slot crawling + slotsHead map[common.Hash]common.Hash // Slot head for accounts being crawled + + lock sync.RWMutex +} + +// newGenerateStats creates a new generator stats. +func newGenerateStats() *generateStats { + return &generateStats{ + slotsStart: make(map[common.Hash]time.Time), + slotsHead: make(map[common.Hash]common.Hash), + start: time.Now(), + } +} + +// progressAccounts updates the generator stats for the account range. +func (stat *generateStats) progressAccounts(account common.Hash, done uint64) { + stat.lock.Lock() + defer stat.lock.Unlock() + + stat.accounts += done + stat.head = account +} + +// finishAccounts updates the gemerator stats for the finished account range. +func (stat *generateStats) finishAccounts(done uint64) { + stat.lock.Lock() + defer stat.lock.Unlock() + + stat.accounts += done +} + +// progressContract updates the generator stats for a specific in-progress contract. +func (stat *generateStats) progressContract(account common.Hash, slot common.Hash, done uint64) { + stat.lock.Lock() + defer stat.lock.Unlock() + + stat.slots += done + stat.slotsHead[account] = slot + if _, ok := stat.slotsStart[account]; !ok { + stat.slotsStart[account] = time.Now() + } +} + +// finishContract updates the generator stats for a specific just-finished contract. +func (stat *generateStats) finishContract(account common.Hash, done uint64) { + stat.lock.Lock() + defer stat.lock.Unlock() + + stat.slots += done + delete(stat.slotsHead, account) + delete(stat.slotsStart, account) +} + +// report prints the cumulative progress statistic smartly. +func (stat *generateStats) report() { + stat.lock.RLock() + defer stat.lock.RUnlock() + + ctx := []interface{}{ + "accounts", stat.accounts, + "slots", stat.slots, + "elapsed", common.PrettyDuration(time.Since(stat.start)), + } + if stat.accounts > 0 { + // If there's progress on the account trie, estimate the time to finish crawling it + if done := binary.BigEndian.Uint64(stat.head[:8]) / stat.accounts; done > 0 { + var ( + left = (math.MaxUint64 - binary.BigEndian.Uint64(stat.head[:8])) / stat.accounts + speed = done/uint64(time.Since(stat.start)/time.Millisecond+1) + 1 // +1s to avoid division by zero + eta = time.Duration(left/speed) * time.Millisecond + ) + // If there are large contract crawls in progress, estimate their finish time + for acc, head := range stat.slotsHead { + start := stat.slotsStart[acc] + if done := binary.BigEndian.Uint64(head[:8]); done > 0 { + var ( + left = math.MaxUint64 - binary.BigEndian.Uint64(head[:8]) + speed = done/uint64(time.Since(start)/time.Millisecond+1) + 1 // +1s to avoid division by zero + ) + // Override the ETA if larger than the largest until now + if slotETA := time.Duration(left/speed) * time.Millisecond; eta < slotETA { + eta = slotETA + } + } + } + ctx = append(ctx, []interface{}{ + "eta", common.PrettyDuration(eta), + }...) + } + } + log.Info("Iterating state snapshot", ctx...) +} + +// reportDone prints the last log when the whole generation is finished. +func (stat *generateStats) reportDone() { + stat.lock.RLock() + defer stat.lock.RUnlock() + + var ctx []interface{} + ctx = append(ctx, []interface{}{"accounts", stat.accounts}...) + if stat.slots != 0 { + ctx = append(ctx, []interface{}{"slots", stat.slots}...) + } + ctx = append(ctx, []interface{}{"elapsed", common.PrettyDuration(time.Since(stat.start))}...) + log.Info("Iterated snapshot", ctx...) +} + +// runReport periodically prints the progress information. +func runReport(stats *generateStats, stop chan bool) { + timer := time.NewTimer(0) + defer timer.Stop() + + for { + select { + case <-timer.C: + stats.report() + timer.Reset(time.Second * 8) + case success := <-stop: + if success { + stats.reportDone() + } + return + } + } +} + +// generateTrieRoot generates the trie hash based on the snapshot iterator. +// It can be used for generating account trie, storage trie or even the +// whole state which connects the accounts and the corresponding storages. +func generateTrieRoot(db ethdb.KeyValueWriter, it Iterator, account common.Hash, generatorFn trieGeneratorFn, leafCallback leafCallbackFn, stats *generateStats, report bool) (common.Hash, error) { + var ( + in = make(chan trieKV) // chan to pass leaves + out = make(chan common.Hash, 1) // chan to collect result + stoplog = make(chan bool, 1) // 1-size buffer, works when logging is not enabled + wg sync.WaitGroup + ) + // Spin up a go-routine for trie hash re-generation + wg.Add(1) + go func() { + defer wg.Done() + generatorFn(db, in, out) + }() + // Spin up a go-routine for progress logging + if report && stats != nil { + wg.Add(1) + go func() { + defer wg.Done() + runReport(stats, stoplog) + }() + } + // Create a semaphore to assign tasks and collect results through. We'll pre- + // fill it with nils, thus using the same channel for both limiting concurrent + // processing and gathering results. + threads := runtime.NumCPU() + results := make(chan error, threads) + for i := 0; i < threads; i++ { + results <- nil // fill the semaphore + } + // stop is a helper function to shutdown the background threads + // and return the re-generated trie hash. + stop := func(fail error) (common.Hash, error) { + close(in) + result := <-out + for i := 0; i < threads; i++ { + if err := <-results; err != nil && fail == nil { + fail = err + } + } + stoplog <- fail == nil + + wg.Wait() + return result, fail + } + var ( + logged = time.Now() + processed = uint64(0) + leaf trieKV + ) + // Start to feed leaves + for it.Next() { + if account == (common.Hash{}) { + var ( + err error + fullData []byte + ) + if leafCallback == nil { + fullData, err = FullAccountRLP(it.(AccountIterator).Account()) + if err != nil { + return stop(err) + } + } else { + // Wait until the semaphore allows us to continue, aborting if + // a sub-task failed + if err := <-results; err != nil { + results <- nil // stop will drain the results, add a noop back for this error we just consumed + return stop(err) + } + // Fetch the next account and process it concurrently + account, err := FullAccount(it.(AccountIterator).Account()) + if err != nil { + return stop(err) + } + go func(hash common.Hash) { + subroot, err := leafCallback(db, hash, common.BytesToHash(account.CodeHash), stats) + if err != nil { + results <- err + return + } + if !bytes.Equal(account.Root, subroot.Bytes()) { + results <- fmt.Errorf("invalid subroot(path %x), want %x, have %x", hash, account.Root, subroot) + return + } + results <- nil + }(it.Hash()) + fullData, err = rlp.EncodeToBytes(account) + if err != nil { + return stop(err) + } + } + leaf = trieKV{it.Hash(), fullData} + } else { + leaf = trieKV{it.Hash(), common.CopyBytes(it.(StorageIterator).Slot())} + } + in <- leaf + + // Accumulate the generation statistic if it's required. + processed++ + if time.Since(logged) > 3*time.Second && stats != nil { + if account == (common.Hash{}) { + stats.progressAccounts(it.Hash(), processed) + } else { + stats.progressContract(account, it.Hash(), processed) + } + logged, processed = time.Now(), 0 + } + } + // Commit the last part statistic. + if processed > 0 && stats != nil { + if account == (common.Hash{}) { + stats.finishAccounts(processed) + } else { + stats.finishContract(account, processed) + } + } + return stop(nil) +} + +func stackTrieGenerate(db ethdb.KeyValueWriter, in chan trieKV, out chan common.Hash) { + t := trie.NewStackTrie(db) + for leaf := range in { + t.TryUpdate(leaf.key[:], leaf.value) + } + var root common.Hash + if db == nil { + root = t.Hash() + } else { + root, _ = t.Commit() + } + out <- root +} diff --git a/core/state/snapshot/difflayer.go b/core/state/snapshot/difflayer.go new file mode 100644 index 0000000000..bb94f612f8 --- /dev/null +++ b/core/state/snapshot/difflayer.go @@ -0,0 +1,574 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "encoding/binary" + "fmt" + "math" + "math/rand" + "sort" + "sync" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" + bloomfilter "github.com/holiman/bloomfilter/v2" +) + +var ( + // aggregatorMemoryLimit is the maximum size of the bottom-most diff layer + // that aggregates the writes from above until it's flushed into the disk + // layer. + // + // Note, bumping this up might drastically increase the size of the bloom + // filters that's stored in every diff layer. Don't do that without fully + // understanding all the implications. + aggregatorMemoryLimit = uint64(4 * 1024 * 1024) + + // aggregatorItemLimit is an approximate number of items that will end up + // in the agregator layer before it's flushed out to disk. A plain account + // weighs around 14B (+hash), a storage slot 32B (+hash), a deleted slot + // 0B (+hash). Slots are mostly set/unset in lockstep, so that average at + // 16B (+hash). All in all, the average entry seems to be 15+32=47B. Use a + // smaller number to be on the safe side. + aggregatorItemLimit = aggregatorMemoryLimit / 42 + + // bloomTargetError is the target false positive rate when the aggregator + // layer is at its fullest. The actual value will probably move around up + // and down from this number, it's mostly a ballpark figure. + // + // Note, dropping this down might drastically increase the size of the bloom + // filters that's stored in every diff layer. Don't do that without fully + // understanding all the implications. + bloomTargetError = 0.02 + + // bloomSize is the ideal bloom filter size given the maximum number of items + // it's expected to hold and the target false positive error rate. + bloomSize = math.Ceil(float64(aggregatorItemLimit) * math.Log(bloomTargetError) / math.Log(1/math.Pow(2, math.Log(2)))) + + // bloomFuncs is the ideal number of bits a single entry should set in the + // bloom filter to keep its size to a minimum (given it's size and maximum + // entry count). + bloomFuncs = math.Round((bloomSize / float64(aggregatorItemLimit)) * math.Log(2)) + + // the bloom offsets are runtime constants which determines which part of the + // the account/storage hash the hasher functions looks at, to determine the + // bloom key for an account/slot. This is randomized at init(), so that the + // global population of nodes do not all display the exact same behaviour with + // regards to bloom content + bloomDestructHasherOffset = 0 + bloomAccountHasherOffset = 0 + bloomStorageHasherOffset = 0 +) + +func init() { + // Init the bloom offsets in the range [0:24] (requires 8 bytes) + bloomDestructHasherOffset = rand.Intn(25) + bloomAccountHasherOffset = rand.Intn(25) + bloomStorageHasherOffset = rand.Intn(25) + + // The destruct and account blooms must be different, as the storage slots + // will check for destruction too for every bloom miss. It should not collide + // with modified accounts. + for bloomAccountHasherOffset == bloomDestructHasherOffset { + bloomAccountHasherOffset = rand.Intn(25) + } +} + +// diffLayer represents a collection of modifications made to a state snapshot +// after running a block on top. It contains one sorted list for the account trie +// and one-one list for each storage tries. +// +// The goal of a diff layer is to act as a journal, tracking recent modifications +// made to the state, that have not yet graduated into a semi-immutable state. +type diffLayer struct { + origin *diskLayer // Base disk layer to directly use on bloom misses + parent snapshot // Parent snapshot modified by this one, never nil + memory uint64 // Approximate guess as to how much memory we use + + blockHash common.Hash // Block hash to which this snapshot diff belongs to + root common.Hash // Root hash to which this snapshot diff belongs to + stale uint32 // Signals that the layer became stale (state progressed) + + // destructSet is a very special helper marker. If an account is marked as + // deleted, then it's recorded in this set. However it's allowed that an account + // is included here but still available in other sets(e.g. storageData). The + // reason is the diff layer includes all the changes in a *block*. It can + // happen that in the tx_1, account A is self-destructed while in the tx_2 + // it's recreated. But we still need this marker to indicate the "old" A is + // deleted, all data in other set belongs to the "new" A. + destructSet map[common.Hash]struct{} // Keyed markers for deleted (and potentially) recreated accounts + accountList []common.Hash // List of account for iteration. If it exists, it's sorted, otherwise it's nil + accountData map[common.Hash][]byte // Keyed accounts for direct retrieval (nil means deleted) + storageList map[common.Hash][]common.Hash // List of storage slots for iterated retrievals, one per account. Any existing lists are sorted if non-nil + storageData map[common.Hash]map[common.Hash][]byte // Keyed storage slots for direct retrieval. one per account (nil means deleted) + + diffed *bloomfilter.Filter // Bloom filter tracking all the diffed items up to the disk layer + + lock sync.RWMutex +} + +// destructBloomHasher is a wrapper around a common.Hash to satisfy the interface +// API requirements of the bloom library used. It's used to convert a destruct +// event into a 64 bit mini hash. +type destructBloomHasher common.Hash + +func (h destructBloomHasher) Write(p []byte) (n int, err error) { panic("not implemented") } +func (h destructBloomHasher) Sum(b []byte) []byte { panic("not implemented") } +func (h destructBloomHasher) Reset() { panic("not implemented") } +func (h destructBloomHasher) BlockSize() int { panic("not implemented") } +func (h destructBloomHasher) Size() int { return 8 } +func (h destructBloomHasher) Sum64() uint64 { + return binary.BigEndian.Uint64(h[bloomDestructHasherOffset : bloomDestructHasherOffset+8]) +} + +// accountBloomHasher is a wrapper around a common.Hash to satisfy the interface +// API requirements of the bloom library used. It's used to convert an account +// hash into a 64 bit mini hash. +type accountBloomHasher common.Hash + +func (h accountBloomHasher) Write(p []byte) (n int, err error) { panic("not implemented") } +func (h accountBloomHasher) Sum(b []byte) []byte { panic("not implemented") } +func (h accountBloomHasher) Reset() { panic("not implemented") } +func (h accountBloomHasher) BlockSize() int { panic("not implemented") } +func (h accountBloomHasher) Size() int { return 8 } +func (h accountBloomHasher) Sum64() uint64 { + return binary.BigEndian.Uint64(h[bloomAccountHasherOffset : bloomAccountHasherOffset+8]) +} + +// storageBloomHasher is a wrapper around a [2]common.Hash to satisfy the interface +// API requirements of the bloom library used. It's used to convert an account +// hash into a 64 bit mini hash. +type storageBloomHasher [2]common.Hash + +func (h storageBloomHasher) Write(p []byte) (n int, err error) { panic("not implemented") } +func (h storageBloomHasher) Sum(b []byte) []byte { panic("not implemented") } +func (h storageBloomHasher) Reset() { panic("not implemented") } +func (h storageBloomHasher) BlockSize() int { panic("not implemented") } +func (h storageBloomHasher) Size() int { return 8 } +func (h storageBloomHasher) Sum64() uint64 { + return binary.BigEndian.Uint64(h[0][bloomStorageHasherOffset:bloomStorageHasherOffset+8]) ^ + binary.BigEndian.Uint64(h[1][bloomStorageHasherOffset:bloomStorageHasherOffset+8]) +} + +// newDiffLayer creates a new diff on top of an existing snapshot, whether that's a low +// level persistent database or a hierarchical diff already. +func newDiffLayer(parent snapshot, blockHash, stateRoot common.Hash, destructs map[common.Hash]struct{}, accounts map[common.Hash][]byte, storage map[common.Hash]map[common.Hash][]byte) *diffLayer { + // Create the new layer with some pre-allocated data segments + dl := &diffLayer{ + parent: parent, + blockHash: blockHash, + root: stateRoot, + destructSet: destructs, + accountData: accounts, + storageData: storage, + storageList: make(map[common.Hash][]common.Hash), + } + switch parent := parent.(type) { + case *diskLayer: + dl.rebloom(parent) + case *diffLayer: + dl.rebloom(parent.origin) + default: + panic("unknown parent type") + } + // Sanity check that accounts or storage slots are never nil + for accountHash, blob := range accounts { + if blob == nil { + panic(fmt.Sprintf("account %#x nil", accountHash)) + } + // Determine memory size and track the dirty writes + dl.memory += uint64(common.HashLength + len(blob)) + snapshotDirtyAccountWriteMeter.Mark(int64(len(blob))) + } + for accountHash, slots := range storage { + if slots == nil { + panic(fmt.Sprintf("storage %#x nil", accountHash)) + } + // Determine memory size and track the dirty writes + for _, data := range slots { + dl.memory += uint64(common.HashLength + len(data)) + snapshotDirtyStorageWriteMeter.Mark(int64(len(data))) + } + } + dl.memory += uint64(len(destructs) * common.HashLength) + return dl +} + +// rebloom discards the layer's current bloom and rebuilds it from scratch based +// on the parent's and the local diffs. +func (dl *diffLayer) rebloom(origin *diskLayer) { + dl.lock.Lock() + defer dl.lock.Unlock() + + defer func(start time.Time) { + snapshotBloomIndexTimer.Update(time.Since(start)) + }(time.Now()) + + // Inject the new origin that triggered the rebloom + dl.origin = origin + + // Retrieve the parent bloom or create a fresh empty one + if parent, ok := dl.parent.(*diffLayer); ok { + parent.lock.RLock() + dl.diffed, _ = parent.diffed.Copy() + parent.lock.RUnlock() + } else { + dl.diffed, _ = bloomfilter.New(uint64(bloomSize), uint64(bloomFuncs)) + } + // Iterate over all the accounts and storage slots and index them + for hash := range dl.destructSet { + dl.diffed.Add(destructBloomHasher(hash)) + } + for hash := range dl.accountData { + dl.diffed.Add(accountBloomHasher(hash)) + } + for accountHash, slots := range dl.storageData { + for storageHash := range slots { + dl.diffed.Add(storageBloomHasher{accountHash, storageHash}) + } + } + // Calculate the current false positive rate and update the error rate meter. + // This is a bit cheating because subsequent layers will overwrite it, but it + // should be fine, we're only interested in ballpark figures. + k := float64(dl.diffed.K()) + n := float64(dl.diffed.N()) + m := float64(dl.diffed.M()) + snapshotBloomErrorGauge.Update(math.Pow(1.0-math.Exp((-k)*(n+0.5)/(m-1)), k)) +} + +// Root returns the root hash for which this snapshot was made. +func (dl *diffLayer) Root() common.Hash { + return dl.root +} + +// BlockHash returns the block hash for which this snapshot was made +func (dl *diffLayer) BlockHash() common.Hash { + return dl.blockHash +} + +// Parent returns the subsequent layer of a diff layer. +func (dl *diffLayer) Parent() snapshot { + return dl.parent +} + +// Stale return whether this layer has become stale (was flattened across) or if +// it's still live. +func (dl *diffLayer) Stale() bool { + return atomic.LoadUint32(&dl.stale) != 0 +} + +// Account directly retrieves the account associated with a particular hash in +// the snapshot slim data format. +func (dl *diffLayer) Account(hash common.Hash) (*Account, error) { + data, err := dl.AccountRLP(hash) + if err != nil { + return nil, err + } + if len(data) == 0 { // can be both nil and []byte{} + return nil, nil + } + account := new(Account) + if err := rlp.DecodeBytes(data, account); err != nil { + panic(err) + } + return account, nil +} + +// AccountRLP directly retrieves the account RLP associated with a particular +// hash in the snapshot slim data format. +// +// Note the returned account is not a copy, please don't modify it. +func (dl *diffLayer) AccountRLP(hash common.Hash) ([]byte, error) { + // Check the bloom filter first whether there's even a point in reaching into + // all the maps in all the layers below + dl.lock.RLock() + hit := dl.diffed.Contains(accountBloomHasher(hash)) + if !hit { + hit = dl.diffed.Contains(destructBloomHasher(hash)) + } + var origin *diskLayer + if !hit { + origin = dl.origin // extract origin while holding the lock + } + dl.lock.RUnlock() + + // If the bloom filter misses, don't even bother with traversing the memory + // diff layers, reach straight into the bottom persistent disk layer + if origin != nil { + snapshotBloomAccountMissMeter.Mark(1) + return origin.AccountRLP(hash) + } + // The bloom filter hit, start poking in the internal maps + return dl.accountRLP(hash, 0) +} + +// accountRLP is an internal version of AccountRLP that skips the bloom filter +// checks and uses the internal maps to try and retrieve the data. It's meant +// to be used if a higher layer's bloom filter hit already. +func (dl *diffLayer) accountRLP(hash common.Hash, depth int) ([]byte, error) { + dl.lock.RLock() + defer dl.lock.RUnlock() + + // If the layer was flattened into, consider it invalid (any live reference to + // the original should be marked as unusable). + if dl.Stale() { + return nil, ErrSnapshotStale + } + // If the account is known locally, return it + if data, ok := dl.accountData[hash]; ok { + snapshotDirtyAccountHitMeter.Mark(1) + snapshotDirtyAccountHitDepthHist.Update(int64(depth)) + snapshotDirtyAccountReadMeter.Mark(int64(len(data))) + snapshotBloomAccountTrueHitMeter.Mark(1) + return data, nil + } + // If the account is known locally, but deleted, return it + if _, ok := dl.destructSet[hash]; ok { + snapshotDirtyAccountHitMeter.Mark(1) + snapshotDirtyAccountHitDepthHist.Update(int64(depth)) + snapshotDirtyAccountInexMeter.Mark(1) + snapshotBloomAccountTrueHitMeter.Mark(1) + return nil, nil + } + // Account unknown to this diff, resolve from parent + if diff, ok := dl.parent.(*diffLayer); ok { + return diff.accountRLP(hash, depth+1) + } + // Failed to resolve through diff layers, mark a bloom error and use the disk + snapshotBloomAccountFalseHitMeter.Mark(1) + return dl.parent.AccountRLP(hash) +} + +// Storage directly retrieves the storage data associated with a particular hash, +// within a particular account. If the slot is unknown to this diff, it's parent +// is consulted. +// +// Note the returned slot is not a copy, please don't modify it. +func (dl *diffLayer) Storage(accountHash, storageHash common.Hash) ([]byte, error) { + // Check the bloom filter first whether there's even a point in reaching into + // all the maps in all the layers below + dl.lock.RLock() + hit := dl.diffed.Contains(storageBloomHasher{accountHash, storageHash}) + if !hit { + hit = dl.diffed.Contains(destructBloomHasher(accountHash)) + } + var origin *diskLayer + if !hit { + origin = dl.origin // extract origin while holding the lock + } + dl.lock.RUnlock() + + // If the bloom filter misses, don't even bother with traversing the memory + // diff layers, reach straight into the bottom persistent disk layer + if origin != nil { + snapshotBloomStorageMissMeter.Mark(1) + return origin.Storage(accountHash, storageHash) + } + // The bloom filter hit, start poking in the internal maps + return dl.storage(accountHash, storageHash, 0) +} + +// storage is an internal version of Storage that skips the bloom filter checks +// and uses the internal maps to try and retrieve the data. It's meant to be +// used if a higher layer's bloom filter hit already. +func (dl *diffLayer) storage(accountHash, storageHash common.Hash, depth int) ([]byte, error) { + dl.lock.RLock() + defer dl.lock.RUnlock() + + // If the layer was flattened into, consider it invalid (any live reference to + // the original should be marked as unusable). + if dl.Stale() { + return nil, ErrSnapshotStale + } + // If the account is known locally, try to resolve the slot locally + if storage, ok := dl.storageData[accountHash]; ok { + if data, ok := storage[storageHash]; ok { + snapshotDirtyStorageHitMeter.Mark(1) + snapshotDirtyStorageHitDepthHist.Update(int64(depth)) + if n := len(data); n > 0 { + snapshotDirtyStorageReadMeter.Mark(int64(n)) + } else { + snapshotDirtyStorageInexMeter.Mark(1) + } + snapshotBloomStorageTrueHitMeter.Mark(1) + return data, nil + } + } + // If the account is known locally, but deleted, return an empty slot + if _, ok := dl.destructSet[accountHash]; ok { + snapshotDirtyStorageHitMeter.Mark(1) + snapshotDirtyStorageHitDepthHist.Update(int64(depth)) + snapshotDirtyStorageInexMeter.Mark(1) + snapshotBloomStorageTrueHitMeter.Mark(1) + return nil, nil + } + // Storage slot unknown to this diff, resolve from parent + if diff, ok := dl.parent.(*diffLayer); ok { + return diff.storage(accountHash, storageHash, depth+1) + } + // Failed to resolve through diff layers, mark a bloom error and use the disk + snapshotBloomStorageFalseHitMeter.Mark(1) + return dl.parent.Storage(accountHash, storageHash) +} + +// Update creates a new layer on top of the existing snapshot diff tree with +// the specified data items. +func (dl *diffLayer) Update(blockHash, blockRoot common.Hash, destructs map[common.Hash]struct{}, accounts map[common.Hash][]byte, storage map[common.Hash]map[common.Hash][]byte) *diffLayer { + return newDiffLayer(dl, blockHash, blockRoot, destructs, accounts, storage) +} + +// flatten pushes all data from this point downwards, flattening everything into +// a single diff at the bottom. Since usually the lowermost diff is the largest, +// the flattening builds up from there in reverse. +func (dl *diffLayer) flatten() snapshot { + // If the parent is not diff, we're the first in line, return unmodified + parent, ok := dl.parent.(*diffLayer) + if !ok { + return dl + } + // Parent is a diff, flatten it first (note, apart from weird corned cases, + // flatten will realistically only ever merge 1 layer, so there's no need to + // be smarter about grouping flattens together). + parent = parent.flatten().(*diffLayer) + + parent.lock.Lock() + defer parent.lock.Unlock() + + // Before actually writing all our data to the parent, first ensure that the + // parent hasn't been 'corrupted' by someone else already flattening into it + if atomic.SwapUint32(&parent.stale, 1) != 0 { + panic("parent diff layer is stale") // we've flattened into the same parent from two children, boo + } + // Overwrite all the updated accounts blindly, merge the sorted list + for hash := range dl.destructSet { + parent.destructSet[hash] = struct{}{} + delete(parent.accountData, hash) + delete(parent.storageData, hash) + } + for hash, data := range dl.accountData { + parent.accountData[hash] = data + } + // Overwrite all the updated storage slots (individually) + for accountHash, storage := range dl.storageData { + // If storage didn't exist (or was deleted) in the parent, overwrite blindly + if _, ok := parent.storageData[accountHash]; !ok { + parent.storageData[accountHash] = storage + continue + } + // Storage exists in both parent and child, merge the slots + comboData := parent.storageData[accountHash] + for storageHash, data := range storage { + comboData[storageHash] = data + } + parent.storageData[accountHash] = comboData + } + // Return the combo parent + return &diffLayer{ + parent: parent.parent, + origin: parent.origin, + root: dl.root, + destructSet: parent.destructSet, + accountData: parent.accountData, + storageData: parent.storageData, + storageList: make(map[common.Hash][]common.Hash), + diffed: dl.diffed, + memory: parent.memory + dl.memory, + } +} + +// AccountList returns a sorted list of all accounts in this diffLayer, including +// the deleted ones. +// +// Note, the returned slice is not a copy, so do not modify it. +func (dl *diffLayer) AccountList() []common.Hash { + // If an old list already exists, return it + dl.lock.RLock() + list := dl.accountList + dl.lock.RUnlock() + + if list != nil { + return list + } + // No old sorted account list exists, generate a new one + dl.lock.Lock() + defer dl.lock.Unlock() + + dl.accountList = make([]common.Hash, 0, len(dl.destructSet)+len(dl.accountData)) + for hash := range dl.accountData { + dl.accountList = append(dl.accountList, hash) + } + for hash := range dl.destructSet { + if _, ok := dl.accountData[hash]; !ok { + dl.accountList = append(dl.accountList, hash) + } + } + sort.Sort(hashes(dl.accountList)) + dl.memory += uint64(len(dl.accountList) * common.HashLength) + return dl.accountList +} + +// StorageList returns a sorted list of all storage slot hashes in this diffLayer +// for the given account. If the whole storage is destructed in this layer, then +// an additional flag *destructed = true* will be returned, otherwise the flag is +// false. Besides, the returned list will include the hash of deleted storage slot. +// Note a special case is an account is deleted in a prior tx but is recreated in +// the following tx with some storage slots set. In this case the returned list is +// not empty but the flag is true. +// +// Note, the returned slice is not a copy, so do not modify it. +func (dl *diffLayer) StorageList(accountHash common.Hash) ([]common.Hash, bool) { + dl.lock.RLock() + _, destructed := dl.destructSet[accountHash] + if _, ok := dl.storageData[accountHash]; !ok { + // Account not tracked by this layer + dl.lock.RUnlock() + return nil, destructed + } + // If an old list already exists, return it + if list, exist := dl.storageList[accountHash]; exist { + dl.lock.RUnlock() + return list, destructed // the cached list can't be nil + } + dl.lock.RUnlock() + + // No old sorted account list exists, generate a new one + dl.lock.Lock() + defer dl.lock.Unlock() + + storageMap := dl.storageData[accountHash] + storageList := make([]common.Hash, 0, len(storageMap)) + for k := range storageMap { + storageList = append(storageList, k) + } + sort.Sort(hashes(storageList)) + dl.storageList[accountHash] = storageList + dl.memory += uint64(len(dl.storageList)*common.HashLength + common.HashLength) + return storageList, destructed +} diff --git a/core/state/snapshot/difflayer_test.go b/core/state/snapshot/difflayer_test.go new file mode 100644 index 0000000000..9979dbcd1e --- /dev/null +++ b/core/state/snapshot/difflayer_test.go @@ -0,0 +1,368 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "math/rand" + "testing" + + "github.com/VictoriaMetrics/fastcache" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func copyDestructs(destructs map[common.Hash]struct{}) map[common.Hash]struct{} { + copy := make(map[common.Hash]struct{}) + for hash := range destructs { + copy[hash] = struct{}{} + } + return copy +} + +func copyAccounts(accounts map[common.Hash][]byte) map[common.Hash][]byte { + copy := make(map[common.Hash][]byte) + for hash, blob := range accounts { + copy[hash] = blob + } + return copy +} + +func copyStorage(storage map[common.Hash]map[common.Hash][]byte) map[common.Hash]map[common.Hash][]byte { + copy := make(map[common.Hash]map[common.Hash][]byte) + for accHash, slots := range storage { + copy[accHash] = make(map[common.Hash][]byte) + for slotHash, blob := range slots { + copy[accHash][slotHash] = blob + } + } + return copy +} + +// TestMergeBasics tests some simple merges +func TestMergeBasics(t *testing.T) { + var ( + destructs = make(map[common.Hash]struct{}) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + // Fill up a parent + for i := 0; i < 100; i++ { + h := randomHash() + data := randomAccount() + + accounts[h] = data + if rand.Intn(4) == 0 { + destructs[h] = struct{}{} + } + if rand.Intn(2) == 0 { + accStorage := make(map[common.Hash][]byte) + value := make([]byte, 32) + rand.Read(value) + accStorage[randomHash()] = value + storage[h] = accStorage + } + } + // Add some (identical) layers on top + parent := newDiffLayer(emptyLayer(), common.Hash{}, common.Hash{}, copyDestructs(destructs), copyAccounts(accounts), copyStorage(storage)) + child := newDiffLayer(parent, common.Hash{}, common.Hash{}, copyDestructs(destructs), copyAccounts(accounts), copyStorage(storage)) + child = newDiffLayer(child, common.Hash{}, common.Hash{}, copyDestructs(destructs), copyAccounts(accounts), copyStorage(storage)) + child = newDiffLayer(child, common.Hash{}, common.Hash{}, copyDestructs(destructs), copyAccounts(accounts), copyStorage(storage)) + child = newDiffLayer(child, common.Hash{}, common.Hash{}, copyDestructs(destructs), copyAccounts(accounts), copyStorage(storage)) + // And flatten + merged := (child.flatten()).(*diffLayer) + + { // Check account lists + if have, want := len(merged.accountList), 0; have != want { + t.Errorf("accountList wrong: have %v, want %v", have, want) + } + if have, want := len(merged.AccountList()), len(accounts); have != want { + t.Errorf("AccountList() wrong: have %v, want %v", have, want) + } + if have, want := len(merged.accountList), len(accounts); have != want { + t.Errorf("accountList [2] wrong: have %v, want %v", have, want) + } + } + { // Check account drops + if have, want := len(merged.destructSet), len(destructs); have != want { + t.Errorf("accountDrop wrong: have %v, want %v", have, want) + } + } + { // Check storage lists + i := 0 + for aHash, sMap := range storage { + if have, want := len(merged.storageList), i; have != want { + t.Errorf("[1] storageList wrong: have %v, want %v", have, want) + } + list, _ := merged.StorageList(aHash) + if have, want := len(list), len(sMap); have != want { + t.Errorf("[2] StorageList() wrong: have %v, want %v", have, want) + } + if have, want := len(merged.storageList[aHash]), len(sMap); have != want { + t.Errorf("storageList wrong: have %v, want %v", have, want) + } + i++ + } + } +} + +// TestMergeDelete tests some deletion +func TestMergeDelete(t *testing.T) { + storage := make(map[common.Hash]map[common.Hash][]byte) + // Fill up a parent + h1 := common.HexToHash("0x01") + h2 := common.HexToHash("0x02") + + flipDrops := func() map[common.Hash]struct{} { + return map[common.Hash]struct{}{ + h2: {}, + } + } + flipAccs := func() map[common.Hash][]byte { + return map[common.Hash][]byte{ + h1: randomAccount(), + } + } + flopDrops := func() map[common.Hash]struct{} { + return map[common.Hash]struct{}{ + h1: {}, + } + } + flopAccs := func() map[common.Hash][]byte { + return map[common.Hash][]byte{ + h2: randomAccount(), + } + } + // Add some flipAccs-flopping layers on top + parent := newDiffLayer(emptyLayer(), common.Hash{}, common.Hash{}, flipDrops(), flipAccs(), storage) + child := parent.Update(common.Hash{}, common.Hash{}, flopDrops(), flopAccs(), storage) + child = child.Update(common.Hash{}, common.Hash{}, flipDrops(), flipAccs(), storage) + child = child.Update(common.Hash{}, common.Hash{}, flopDrops(), flopAccs(), storage) + child = child.Update(common.Hash{}, common.Hash{}, flipDrops(), flipAccs(), storage) + child = child.Update(common.Hash{}, common.Hash{}, flopDrops(), flopAccs(), storage) + child = child.Update(common.Hash{}, common.Hash{}, flipDrops(), flipAccs(), storage) + + if data, _ := child.Account(h1); data == nil { + t.Errorf("last diff layer: expected %x account to be non-nil", h1) + } + if data, _ := child.Account(h2); data != nil { + t.Errorf("last diff layer: expected %x account to be nil", h2) + } + if _, ok := child.destructSet[h1]; ok { + t.Errorf("last diff layer: expected %x drop to be missing", h1) + } + if _, ok := child.destructSet[h2]; !ok { + t.Errorf("last diff layer: expected %x drop to be present", h1) + } + // And flatten + merged := (child.flatten()).(*diffLayer) + + if data, _ := merged.Account(h1); data == nil { + t.Errorf("merged layer: expected %x account to be non-nil", h1) + } + if data, _ := merged.Account(h2); data != nil { + t.Errorf("merged layer: expected %x account to be nil", h2) + } + if _, ok := merged.destructSet[h1]; !ok { // Note, drops stay alive until persisted to disk! + t.Errorf("merged diff layer: expected %x drop to be present", h1) + } + if _, ok := merged.destructSet[h2]; !ok { // Note, drops stay alive until persisted to disk! + t.Errorf("merged diff layer: expected %x drop to be present", h1) + } + // If we add more granular metering of memory, we can enable this again, + // but it's not implemented for now + //if have, want := merged.memory, child.memory; have != want { + // t.Errorf("mem wrong: have %d, want %d", have, want) + //} +} + +// This tests that if we create a new account, and set a slot, and then merge +// it, the lists will be correct. +func TestInsertAndMerge(t *testing.T) { + // Fill up a parent + var ( + acc = common.HexToHash("0x01") + slot = common.HexToHash("0x02") + parent *diffLayer + child *diffLayer + ) + { + var ( + destructs = make(map[common.Hash]struct{}) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + parent = newDiffLayer(emptyLayer(), common.Hash{}, common.Hash{}, destructs, accounts, storage) + } + { + var ( + destructs = make(map[common.Hash]struct{}) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + accounts[acc] = randomAccount() + storage[acc] = make(map[common.Hash][]byte) + storage[acc][slot] = []byte{0x01} + child = newDiffLayer(parent, common.Hash{}, common.Hash{}, destructs, accounts, storage) + } + // And flatten + merged := (child.flatten()).(*diffLayer) + { // Check that slot value is present + have, _ := merged.Storage(acc, slot) + if want := []byte{0x01}; !bytes.Equal(have, want) { + t.Errorf("merged slot value wrong: have %x, want %x", have, want) + } + } +} + +func emptyLayer() *diskLayer { + return &diskLayer{ + diskdb: memorydb.New(), + cache: fastcache.New(500 * 1024), + } +} + +// BenchmarkSearch checks how long it takes to find a non-existing key +// BenchmarkSearch-6 200000 10481 ns/op (1K per layer) +// BenchmarkSearch-6 200000 10760 ns/op (10K per layer) +// BenchmarkSearch-6 100000 17866 ns/op +// +// BenchmarkSearch-6 500000 3723 ns/op (10k per layer, only top-level RLock() +func BenchmarkSearch(b *testing.B) { + // First, we set up 128 diff layers, with 1K items each + fill := func(parent snapshot) *diffLayer { + var ( + destructs = make(map[common.Hash]struct{}) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + for i := 0; i < 10000; i++ { + accounts[randomHash()] = randomAccount() + } + return newDiffLayer(parent, common.Hash{}, common.Hash{}, destructs, accounts, storage) + } + var layer snapshot + layer = emptyLayer() + for i := 0; i < 128; i++ { + layer = fill(layer) + } + key := crypto.Keccak256Hash([]byte{0x13, 0x38}) + b.ResetTimer() + for i := 0; i < b.N; i++ { + layer.AccountRLP(key) + } +} + +// BenchmarkSearchSlot checks how long it takes to find a non-existing key +// - Number of layers: 128 +// - Each layers contains the account, with a couple of storage slots +// BenchmarkSearchSlot-6 100000 14554 ns/op +// BenchmarkSearchSlot-6 100000 22254 ns/op (when checking parent root using mutex) +// BenchmarkSearchSlot-6 100000 14551 ns/op (when checking parent number using atomic) +// With bloom filter: +// BenchmarkSearchSlot-6 3467835 351 ns/op +func BenchmarkSearchSlot(b *testing.B) { + // First, we set up 128 diff layers, with 1K items each + accountKey := crypto.Keccak256Hash([]byte{0x13, 0x37}) + storageKey := crypto.Keccak256Hash([]byte{0x13, 0x37}) + accountRLP := randomAccount() + fill := func(parent snapshot) *diffLayer { + var ( + destructs = make(map[common.Hash]struct{}) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + accounts[accountKey] = accountRLP + + accStorage := make(map[common.Hash][]byte) + for i := 0; i < 5; i++ { + value := make([]byte, 32) + rand.Read(value) + accStorage[randomHash()] = value + storage[accountKey] = accStorage + } + return newDiffLayer(parent, common.Hash{}, common.Hash{}, destructs, accounts, storage) + } + var layer snapshot + layer = emptyLayer() + for i := 0; i < 128; i++ { + layer = fill(layer) + } + b.ResetTimer() + for i := 0; i < b.N; i++ { + layer.Storage(accountKey, storageKey) + } +} + +// With accountList and sorting +// BenchmarkFlatten-6 50 29890856 ns/op +// +// Without sorting and tracking accountList +// BenchmarkFlatten-6 300 5511511 ns/op +func BenchmarkFlatten(b *testing.B) { + fill := func(parent snapshot) *diffLayer { + var ( + destructs = make(map[common.Hash]struct{}) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + for i := 0; i < 100; i++ { + accountKey := randomHash() + accounts[accountKey] = randomAccount() + + accStorage := make(map[common.Hash][]byte) + for i := 0; i < 20; i++ { + value := make([]byte, 32) + rand.Read(value) + accStorage[randomHash()] = value + + } + storage[accountKey] = accStorage + } + return newDiffLayer(parent, common.Hash{}, common.Hash{}, destructs, accounts, storage) + } + b.ResetTimer() + for i := 0; i < b.N; i++ { + b.StopTimer() + var layer snapshot + layer = emptyLayer() + for i := 1; i < 128; i++ { + layer = fill(layer) + } + b.StartTimer() + + for i := 1; i < 128; i++ { + dl, ok := layer.(*diffLayer) + if !ok { + break + } + layer = dl.flatten() + } + b.StopTimer() + } +} diff --git a/core/state/snapshot/disklayer.go b/core/state/snapshot/disklayer.go new file mode 100644 index 0000000000..10afd79bbb --- /dev/null +++ b/core/state/snapshot/disklayer.go @@ -0,0 +1,189 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "sync" + "time" + + "github.com/VictoriaMetrics/fastcache" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" +) + +// diskLayer is a low level persistent snapshot built on top of a key-value store. +type diskLayer struct { + diskdb ethdb.KeyValueStore // Key-value store containing the base snapshot + triedb *trie.Database // Trie node cache for reconstruction purposes + cache *fastcache.Cache // Cache to avoid hitting the disk for direct access + + blockHash common.Hash // Block hash of the base snapshot + root common.Hash // Root hash of the base snapshot + stale bool // Signals that the layer became stale (state progressed) + + genMarker []byte // Marker for the state that's indexed during initial layer generation + genPending chan struct{} // Notification channel when generation is done (test synchronicity) + genAbort chan chan struct{} // Notification channel to abort generating the snapshot in this layer + + genStats *generatorStats // Stats for snapshot generation (generation aborted/finished if non-nil) + + created time.Time // Time at which disk layer was created + logged time.Time // Time at which last logged generation progress + abortStarted time.Time // Time as which disk layer started to be aborted + + lock sync.RWMutex +} + +// Root returns root hash for which this snapshot was made. +func (dl *diskLayer) Root() common.Hash { + return dl.root +} + +// BlockHash returns the block hash for which this snapshot was made +func (dl *diskLayer) BlockHash() common.Hash { + return dl.blockHash +} + +// Parent always returns nil as there's no layer below the disk. +func (dl *diskLayer) Parent() snapshot { + return nil +} + +// Stale return whether this layer has become stale (was flattened across) or if +// it's still live. +func (dl *diskLayer) Stale() bool { + dl.lock.RLock() + defer dl.lock.RUnlock() + + return dl.stale +} + +// Account directly retrieves the account associated with a particular hash in +// the snapshot slim data format. +func (dl *diskLayer) Account(hash common.Hash) (*Account, error) { + data, err := dl.AccountRLP(hash) + if err != nil { + return nil, err + } + if len(data) == 0 { // can be both nil and []byte{} + return nil, nil + } + account := new(Account) + if err := rlp.DecodeBytes(data, account); err != nil { + panic(err) + } + return account, nil +} + +// AccountRLP directly retrieves the account RLP associated with a particular +// hash in the snapshot slim data format. +func (dl *diskLayer) AccountRLP(hash common.Hash) ([]byte, error) { + dl.lock.RLock() + defer dl.lock.RUnlock() + + // If the layer was flattened into, consider it invalid (any live reference to + // the original should be marked as unusable). + if dl.stale { + return nil, ErrSnapshotStale + } + // If the layer is being generated, ensure the requested hash has already been + // covered by the generator. + if dl.genMarker != nil && bytes.Compare(hash[:], dl.genMarker) > 0 { + return nil, ErrNotCoveredYet + } + // If we're in the disk layer, all diff layers missed + snapshotDirtyAccountMissMeter.Mark(1) + + // Try to retrieve the account from the memory cache + if blob, found := dl.cache.HasGet(nil, hash[:]); found { + snapshotCleanAccountHitMeter.Mark(1) + snapshotCleanAccountReadMeter.Mark(int64(len(blob))) + return blob, nil + } + // Cache doesn't contain account, pull from disk and cache for later + blob := rawdb.ReadAccountSnapshot(dl.diskdb, hash) + dl.cache.Set(hash[:], blob) + + snapshotCleanAccountMissMeter.Mark(1) + if n := len(blob); n > 0 { + snapshotCleanAccountWriteMeter.Mark(int64(n)) + } else { + snapshotCleanAccountInexMeter.Mark(1) + } + return blob, nil +} + +// Storage directly retrieves the storage data associated with a particular hash, +// within a particular account. +func (dl *diskLayer) Storage(accountHash, storageHash common.Hash) ([]byte, error) { + dl.lock.RLock() + defer dl.lock.RUnlock() + + // If the layer was flattened into, consider it invalid (any live reference to + // the original should be marked as unusable). + if dl.stale { + return nil, ErrSnapshotStale + } + key := append(accountHash[:], storageHash[:]...) + + // If the layer is being generated, ensure the requested hash has already been + // covered by the generator. + if dl.genMarker != nil && bytes.Compare(key, dl.genMarker) > 0 { + return nil, ErrNotCoveredYet + } + // If we're in the disk layer, all diff layers missed + snapshotDirtyStorageMissMeter.Mark(1) + + // Try to retrieve the storage slot from the memory cache + if blob, found := dl.cache.HasGet(nil, key); found { + snapshotCleanStorageHitMeter.Mark(1) + snapshotCleanStorageReadMeter.Mark(int64(len(blob))) + return blob, nil + } + // Cache doesn't contain storage slot, pull from disk and cache for later + blob := rawdb.ReadStorageSnapshot(dl.diskdb, accountHash, storageHash) + dl.cache.Set(key, blob) + + snapshotCleanStorageMissMeter.Mark(1) + if n := len(blob); n > 0 { + snapshotCleanStorageWriteMeter.Mark(int64(n)) + } else { + snapshotCleanStorageInexMeter.Mark(1) + } + return blob, nil +} + +// Update creates a new layer on top of the existing snapshot diff tree with +// the specified data items. Note, the maps are retained by the method to avoid +// copying everything. +func (dl *diskLayer) Update(blockHash, blockRoot common.Hash, destructs map[common.Hash]struct{}, accounts map[common.Hash][]byte, storage map[common.Hash]map[common.Hash][]byte) *diffLayer { + return newDiffLayer(dl, blockHash, blockRoot, destructs, accounts, storage) +} diff --git a/core/state/snapshot/disklayer_test.go b/core/state/snapshot/disklayer_test.go new file mode 100644 index 0000000000..d104962052 --- /dev/null +++ b/core/state/snapshot/disklayer_test.go @@ -0,0 +1,567 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "testing" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" +) + +// reverse reverses the contents of a byte slice. It's used to update random accs +// with deterministic changes. +func reverse(blob []byte) []byte { + res := make([]byte, len(blob)) + for i, b := range blob { + res[len(blob)-1-i] = b + } + return res +} + +// Tests that merging something into a disk layer persists it into the database +// and invalidates any previously written and cached values. +func TestDiskMerge(t *testing.T) { + // Create some accounts in the disk layer + db := memorydb.New() + + var ( + accNoModNoCache = common.Hash{0x1} + accNoModCache = common.Hash{0x2} + accModNoCache = common.Hash{0x3} + accModCache = common.Hash{0x4} + accDelNoCache = common.Hash{0x5} + accDelCache = common.Hash{0x6} + conNoModNoCache = common.Hash{0x7} + conNoModNoCacheSlot = common.Hash{0x70} + conNoModCache = common.Hash{0x8} + conNoModCacheSlot = common.Hash{0x80} + conModNoCache = common.Hash{0x9} + conModNoCacheSlot = common.Hash{0x90} + conModCache = common.Hash{0xa} + conModCacheSlot = common.Hash{0xa0} + conDelNoCache = common.Hash{0xb} + conDelNoCacheSlot = common.Hash{0xb0} + conDelCache = common.Hash{0xc} + conDelCacheSlot = common.Hash{0xc0} + conNukeNoCache = common.Hash{0xd} + conNukeNoCacheSlot = common.Hash{0xd0} + conNukeCache = common.Hash{0xe} + conNukeCacheSlot = common.Hash{0xe0} + baseRoot = randomHash() + baseBlockHash = randomHash() + diffRoot = randomHash() + diffBlockHash = randomHash() + ) + + rawdb.WriteAccountSnapshot(db, accNoModNoCache, accNoModNoCache[:]) + rawdb.WriteAccountSnapshot(db, accNoModCache, accNoModCache[:]) + rawdb.WriteAccountSnapshot(db, accModNoCache, accModNoCache[:]) + rawdb.WriteAccountSnapshot(db, accModCache, accModCache[:]) + rawdb.WriteAccountSnapshot(db, accDelNoCache, accDelNoCache[:]) + rawdb.WriteAccountSnapshot(db, accDelCache, accDelCache[:]) + + rawdb.WriteAccountSnapshot(db, conNoModNoCache, conNoModNoCache[:]) + rawdb.WriteStorageSnapshot(db, conNoModNoCache, conNoModNoCacheSlot, conNoModNoCacheSlot[:]) + rawdb.WriteAccountSnapshot(db, conNoModCache, conNoModCache[:]) + rawdb.WriteStorageSnapshot(db, conNoModCache, conNoModCacheSlot, conNoModCacheSlot[:]) + rawdb.WriteAccountSnapshot(db, conModNoCache, conModNoCache[:]) + rawdb.WriteStorageSnapshot(db, conModNoCache, conModNoCacheSlot, conModNoCacheSlot[:]) + rawdb.WriteAccountSnapshot(db, conModCache, conModCache[:]) + rawdb.WriteStorageSnapshot(db, conModCache, conModCacheSlot, conModCacheSlot[:]) + rawdb.WriteAccountSnapshot(db, conDelNoCache, conDelNoCache[:]) + rawdb.WriteStorageSnapshot(db, conDelNoCache, conDelNoCacheSlot, conDelNoCacheSlot[:]) + rawdb.WriteAccountSnapshot(db, conDelCache, conDelCache[:]) + rawdb.WriteStorageSnapshot(db, conDelCache, conDelCacheSlot, conDelCacheSlot[:]) + + rawdb.WriteAccountSnapshot(db, conNukeNoCache, conNukeNoCache[:]) + rawdb.WriteStorageSnapshot(db, conNukeNoCache, conNukeNoCacheSlot, conNukeNoCacheSlot[:]) + rawdb.WriteAccountSnapshot(db, conNukeCache, conNukeCache[:]) + rawdb.WriteStorageSnapshot(db, conNukeCache, conNukeCacheSlot, conNukeCacheSlot[:]) + + rawdb.WriteSnapshotBlockHash(db, baseBlockHash) + rawdb.WriteSnapshotRoot(db, baseRoot) + + // Create a disk layer based on the above and cache in some data + snaps := NewTestTree(db, baseBlockHash, baseRoot) + base := snaps.Snapshot(baseRoot) + base.AccountRLP(accNoModCache) + base.AccountRLP(accModCache) + base.AccountRLP(accDelCache) + base.Storage(conNoModCache, conNoModCacheSlot) + base.Storage(conModCache, conModCacheSlot) + base.Storage(conDelCache, conDelCacheSlot) + base.Storage(conNukeCache, conNukeCacheSlot) + + // Modify or delete some accounts, flatten everything onto disk + if err := snaps.Update(diffBlockHash, diffRoot, baseBlockHash, map[common.Hash]struct{}{ + accDelNoCache: {}, + accDelCache: {}, + conNukeNoCache: {}, + conNukeCache: {}, + }, map[common.Hash][]byte{ + accModNoCache: reverse(accModNoCache[:]), + accModCache: reverse(accModCache[:]), + }, map[common.Hash]map[common.Hash][]byte{ + conModNoCache: {conModNoCacheSlot: reverse(conModNoCacheSlot[:])}, + conModCache: {conModCacheSlot: reverse(conModCacheSlot[:])}, + conDelNoCache: {conDelNoCacheSlot: nil}, + conDelCache: {conDelCacheSlot: nil}, + }); err != nil { + t.Fatalf("failed to update snapshot tree: %v", err) + } + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(diffBlockHash); err != nil { + t.Fatalf("failed to flatten snapshot tree: %v", err) + } + // Retrieve all the data through the disk layer and validate it + base = snaps.Snapshot(diffRoot) + if _, ok := base.(*diskLayer); !ok { + t.Fatalf("update not flattend into the disk layer") + } + + // assertAccount ensures that an account matches the given blob. + assertAccount := func(account common.Hash, data []byte) { + t.Helper() + blob, err := base.AccountRLP(account) + if err != nil { + t.Errorf("account access (%x) failed: %v", account, err) + } else if !bytes.Equal(blob, data) { + t.Errorf("account access (%x) mismatch: have %x, want %x", account, blob, data) + } + } + assertAccount(accNoModNoCache, accNoModNoCache[:]) + assertAccount(accNoModCache, accNoModCache[:]) + assertAccount(accModNoCache, reverse(accModNoCache[:])) + assertAccount(accModCache, reverse(accModCache[:])) + assertAccount(accDelNoCache, nil) + assertAccount(accDelCache, nil) + + // assertStorage ensures that a storage slot matches the given blob. + assertStorage := func(account common.Hash, slot common.Hash, data []byte) { + t.Helper() + blob, err := base.Storage(account, slot) + if err != nil { + t.Errorf("storage access (%x:%x) failed: %v", account, slot, err) + } else if !bytes.Equal(blob, data) { + t.Errorf("storage access (%x:%x) mismatch: have %x, want %x", account, slot, blob, data) + } + } + assertStorage(conNoModNoCache, conNoModNoCacheSlot, conNoModNoCacheSlot[:]) + assertStorage(conNoModCache, conNoModCacheSlot, conNoModCacheSlot[:]) + assertStorage(conModNoCache, conModNoCacheSlot, reverse(conModNoCacheSlot[:])) + assertStorage(conModCache, conModCacheSlot, reverse(conModCacheSlot[:])) + assertStorage(conDelNoCache, conDelNoCacheSlot, nil) + assertStorage(conDelCache, conDelCacheSlot, nil) + assertStorage(conNukeNoCache, conNukeNoCacheSlot, nil) + assertStorage(conNukeCache, conNukeCacheSlot, nil) + + // Retrieve all the data directly from the database and validate it + + // assertDatabaseAccount ensures that an account from the database matches the given blob. + assertDatabaseAccount := func(account common.Hash, data []byte) { + t.Helper() + if blob := rawdb.ReadAccountSnapshot(db, account); !bytes.Equal(blob, data) { + t.Errorf("account database access (%x) mismatch: have %x, want %x", account, blob, data) + } + } + assertDatabaseAccount(accNoModNoCache, accNoModNoCache[:]) + assertDatabaseAccount(accNoModCache, accNoModCache[:]) + assertDatabaseAccount(accModNoCache, reverse(accModNoCache[:])) + assertDatabaseAccount(accModCache, reverse(accModCache[:])) + assertDatabaseAccount(accDelNoCache, nil) + assertDatabaseAccount(accDelCache, nil) + + // assertDatabaseStorage ensures that a storage slot from the database matches the given blob. + assertDatabaseStorage := func(account common.Hash, slot common.Hash, data []byte) { + t.Helper() + if blob := rawdb.ReadStorageSnapshot(db, account, slot); !bytes.Equal(blob, data) { + t.Errorf("storage database access (%x:%x) mismatch: have %x, want %x", account, slot, blob, data) + } + } + assertDatabaseStorage(conNoModNoCache, conNoModNoCacheSlot, conNoModNoCacheSlot[:]) + assertDatabaseStorage(conNoModCache, conNoModCacheSlot, conNoModCacheSlot[:]) + assertDatabaseStorage(conModNoCache, conModNoCacheSlot, reverse(conModNoCacheSlot[:])) + assertDatabaseStorage(conModCache, conModCacheSlot, reverse(conModCacheSlot[:])) + assertDatabaseStorage(conDelNoCache, conDelNoCacheSlot, nil) + assertDatabaseStorage(conDelCache, conDelCacheSlot, nil) + assertDatabaseStorage(conNukeNoCache, conNukeNoCacheSlot, nil) + assertDatabaseStorage(conNukeCache, conNukeCacheSlot, nil) +} + +// Tests that merging something into a disk layer persists it into the database +// and invalidates any previously written and cached values, discarding anything +// after the in-progress generation marker. +func TestDiskPartialMerge(t *testing.T) { + // Iterate the test a few times to ensure we pick various internal orderings + // for the data slots as well as the progress marker. + for i := 0; i < 1024; i++ { + // Create some accounts in the disk layer + db := memorydb.New() + + var ( + accNoModNoCache = randomHash() + accNoModCache = randomHash() + accModNoCache = randomHash() + accModCache = randomHash() + accDelNoCache = randomHash() + accDelCache = randomHash() + conNoModNoCache = randomHash() + conNoModNoCacheSlot = randomHash() + conNoModCache = randomHash() + conNoModCacheSlot = randomHash() + conModNoCache = randomHash() + conModNoCacheSlot = randomHash() + conModCache = randomHash() + conModCacheSlot = randomHash() + conDelNoCache = randomHash() + conDelNoCacheSlot = randomHash() + conDelCache = randomHash() + conDelCacheSlot = randomHash() + conNukeNoCache = randomHash() + conNukeNoCacheSlot = randomHash() + conNukeCache = randomHash() + conNukeCacheSlot = randomHash() + baseRoot = randomHash() + baseBlockHash = randomHash() + diffRoot = randomHash() + diffBlockHash = randomHash() + genMarker = append(randomHash().Bytes(), randomHash().Bytes()...) + ) + + // insertAccount injects an account into the database if it's after the + // generator marker, drops the op otherwise. This is needed to seed the + // database with a valid starting snapshot. + insertAccount := func(account common.Hash, data []byte) { + if bytes.Compare(account[:], genMarker) <= 0 { + rawdb.WriteAccountSnapshot(db, account, data[:]) + } + } + insertAccount(accNoModNoCache, accNoModNoCache[:]) + insertAccount(accNoModCache, accNoModCache[:]) + insertAccount(accModNoCache, accModNoCache[:]) + insertAccount(accModCache, accModCache[:]) + insertAccount(accDelNoCache, accDelNoCache[:]) + insertAccount(accDelCache, accDelCache[:]) + + // insertStorage injects a storage slot into the database if it's after + // the generator marker, drops the op otherwise. This is needed to seed + // the database with a valid starting snapshot. + insertStorage := func(account common.Hash, slot common.Hash, data []byte) { + if bytes.Compare(append(account[:], slot[:]...), genMarker) <= 0 { + rawdb.WriteStorageSnapshot(db, account, slot, data[:]) + } + } + insertAccount(conNoModNoCache, conNoModNoCache[:]) + insertStorage(conNoModNoCache, conNoModNoCacheSlot, conNoModNoCacheSlot[:]) + insertAccount(conNoModCache, conNoModCache[:]) + insertStorage(conNoModCache, conNoModCacheSlot, conNoModCacheSlot[:]) + insertAccount(conModNoCache, conModNoCache[:]) + insertStorage(conModNoCache, conModNoCacheSlot, conModNoCacheSlot[:]) + insertAccount(conModCache, conModCache[:]) + insertStorage(conModCache, conModCacheSlot, conModCacheSlot[:]) + insertAccount(conDelNoCache, conDelNoCache[:]) + insertStorage(conDelNoCache, conDelNoCacheSlot, conDelNoCacheSlot[:]) + insertAccount(conDelCache, conDelCache[:]) + insertStorage(conDelCache, conDelCacheSlot, conDelCacheSlot[:]) + + insertAccount(conNukeNoCache, conNukeNoCache[:]) + insertStorage(conNukeNoCache, conNukeNoCacheSlot, conNukeNoCacheSlot[:]) + insertAccount(conNukeCache, conNukeCache[:]) + insertStorage(conNukeCache, conNukeCacheSlot, conNukeCacheSlot[:]) + + rawdb.WriteSnapshotBlockHash(db, baseBlockHash) + rawdb.WriteSnapshotRoot(db, baseRoot) + + // Create a disk layer based on the above using a random progress marker + // and cache in some data. + snaps := NewTestTree(db, baseBlockHash, baseRoot) + dl := snaps.disklayer() + dl.genMarker = genMarker + base := snaps.Snapshot(baseRoot) + + // assertAccount ensures that an account matches the given blob if it's + // already covered by the disk snapshot, and errors out otherwise. + assertAccount := func(account common.Hash, data []byte) { + t.Helper() + blob, err := base.AccountRLP(account) + if bytes.Compare(account[:], genMarker) > 0 && err != ErrNotCoveredYet { + t.Fatalf("test %d: post-marker (%x) account access (%x) succeeded: %x", i, genMarker, account, blob) + } + if bytes.Compare(account[:], genMarker) <= 0 && !bytes.Equal(blob, data) { + t.Fatalf("test %d: pre-marker (%x) account access (%x) mismatch: have %x, want %x", i, genMarker, account, blob, data) + } + } + assertAccount(accNoModCache, accNoModCache[:]) + assertAccount(accModCache, accModCache[:]) + assertAccount(accDelCache, accDelCache[:]) + + // assertStorage ensures that a storage slot matches the given blob if + // it's already covered by the disk snapshot, and errors out otherwise. + assertStorage := func(account common.Hash, slot common.Hash, data []byte) { + t.Helper() + blob, err := base.Storage(account, slot) + if bytes.Compare(append(account[:], slot[:]...), genMarker) > 0 && err != ErrNotCoveredYet { + t.Fatalf("test %d: post-marker (%x) storage access (%x:%x) succeeded: %x", i, genMarker, account, slot, blob) + } + if bytes.Compare(append(account[:], slot[:]...), genMarker) <= 0 && !bytes.Equal(blob, data) { + t.Fatalf("test %d: pre-marker (%x) storage access (%x:%x) mismatch: have %x, want %x", i, genMarker, account, slot, blob, data) + } + } + assertStorage(conNoModCache, conNoModCacheSlot, conNoModCacheSlot[:]) + assertStorage(conModCache, conModCacheSlot, conModCacheSlot[:]) + assertStorage(conDelCache, conDelCacheSlot, conDelCacheSlot[:]) + assertStorage(conNukeCache, conNukeCacheSlot, conNukeCacheSlot[:]) + + // Modify or delete some accounts, flatten everything onto disk + if err := snaps.Update(diffBlockHash, diffRoot, baseBlockHash, map[common.Hash]struct{}{ + accDelNoCache: {}, + accDelCache: {}, + conNukeNoCache: {}, + conNukeCache: {}, + }, map[common.Hash][]byte{ + accModNoCache: reverse(accModNoCache[:]), + accModCache: reverse(accModCache[:]), + }, map[common.Hash]map[common.Hash][]byte{ + conModNoCache: {conModNoCacheSlot: reverse(conModNoCacheSlot[:])}, + conModCache: {conModCacheSlot: reverse(conModCacheSlot[:])}, + conDelNoCache: {conDelNoCacheSlot: nil}, + conDelCache: {conDelCacheSlot: nil}, + }); err != nil { + t.Fatalf("test %d: failed to update snapshot tree: %v", i, err) + } + if err := snaps.Flatten(diffBlockHash); err != nil { + t.Fatalf("test %d: failed to flatten snapshot tree: %v", i, err) + } + // Retrieve all the data through the disk layer and validate it + base = snaps.Snapshot(diffRoot) + if _, ok := base.(*diskLayer); !ok { + t.Fatalf("test %d: update not flattend into the disk layer", i) + } + assertAccount(accNoModNoCache, accNoModNoCache[:]) + assertAccount(accNoModCache, accNoModCache[:]) + assertAccount(accModNoCache, reverse(accModNoCache[:])) + assertAccount(accModCache, reverse(accModCache[:])) + assertAccount(accDelNoCache, nil) + assertAccount(accDelCache, nil) + + assertStorage(conNoModNoCache, conNoModNoCacheSlot, conNoModNoCacheSlot[:]) + assertStorage(conNoModCache, conNoModCacheSlot, conNoModCacheSlot[:]) + assertStorage(conModNoCache, conModNoCacheSlot, reverse(conModNoCacheSlot[:])) + assertStorage(conModCache, conModCacheSlot, reverse(conModCacheSlot[:])) + assertStorage(conDelNoCache, conDelNoCacheSlot, nil) + assertStorage(conDelCache, conDelCacheSlot, nil) + assertStorage(conNukeNoCache, conNukeNoCacheSlot, nil) + assertStorage(conNukeCache, conNukeCacheSlot, nil) + + // Retrieve all the data directly from the database and validate it + + // assertDatabaseAccount ensures that an account inside the database matches + // the given blob if it's already covered by the disk snapshot, and does not + // exist otherwise. + assertDatabaseAccount := func(account common.Hash, data []byte) { + t.Helper() + blob := rawdb.ReadAccountSnapshot(db, account) + if bytes.Compare(account[:], genMarker) > 0 && blob != nil { + t.Fatalf("test %d: post-marker (%x) account database access (%x) succeeded: %x", i, genMarker, account, blob) + } + if bytes.Compare(account[:], genMarker) <= 0 && !bytes.Equal(blob, data) { + t.Fatalf("test %d: pre-marker (%x) account database access (%x) mismatch: have %x, want %x", i, genMarker, account, blob, data) + } + } + assertDatabaseAccount(accNoModNoCache, accNoModNoCache[:]) + assertDatabaseAccount(accNoModCache, accNoModCache[:]) + assertDatabaseAccount(accModNoCache, reverse(accModNoCache[:])) + assertDatabaseAccount(accModCache, reverse(accModCache[:])) + assertDatabaseAccount(accDelNoCache, nil) + assertDatabaseAccount(accDelCache, nil) + + // assertDatabaseStorage ensures that a storage slot inside the database + // matches the given blob if it's already covered by the disk snapshot, + // and does not exist otherwise. + assertDatabaseStorage := func(account common.Hash, slot common.Hash, data []byte) { + t.Helper() + blob := rawdb.ReadStorageSnapshot(db, account, slot) + if bytes.Compare(append(account[:], slot[:]...), genMarker) > 0 && blob != nil { + t.Fatalf("test %d: post-marker (%x) storage database access (%x:%x) succeeded: %x", i, genMarker, account, slot, blob) + } + if bytes.Compare(append(account[:], slot[:]...), genMarker) <= 0 && !bytes.Equal(blob, data) { + t.Fatalf("test %d: pre-marker (%x) storage database access (%x:%x) mismatch: have %x, want %x", i, genMarker, account, slot, blob, data) + } + } + assertDatabaseStorage(conNoModNoCache, conNoModNoCacheSlot, conNoModNoCacheSlot[:]) + assertDatabaseStorage(conNoModCache, conNoModCacheSlot, conNoModCacheSlot[:]) + assertDatabaseStorage(conModNoCache, conModNoCacheSlot, reverse(conModNoCacheSlot[:])) + assertDatabaseStorage(conModCache, conModCacheSlot, reverse(conModCacheSlot[:])) + assertDatabaseStorage(conDelNoCache, conDelNoCacheSlot, nil) + assertDatabaseStorage(conDelCache, conDelCacheSlot, nil) + assertDatabaseStorage(conNukeNoCache, conNukeNoCacheSlot, nil) + assertDatabaseStorage(conNukeCache, conNukeCacheSlot, nil) + } +} + +// Tests that when the bottom-most diff layer is merged into the disk +// layer whether the corresponding generator is persisted correctly. +func TestDiskGeneratorPersistence(t *testing.T) { + var ( + accOne = randomHash() + accTwo = randomHash() + accOneSlotOne = randomHash() + accOneSlotTwo = randomHash() + + accThree = randomHash() + accThreeSlot = randomHash() + baseRoot = randomHash() + baseBlockHash = randomHash() + diffRoot = randomHash() + diffBlockHash = randomHash() + diffTwoRoot = randomHash() + diffTwoBlockHash = randomHash() + genMarker = append(randomHash().Bytes(), randomHash().Bytes()...) + ) + // Testing scenario 1, the disk layer is still under the construction. + db := rawdb.NewMemoryDatabase() + + rawdb.WriteAccountSnapshot(db, accOne, accOne[:]) + rawdb.WriteStorageSnapshot(db, accOne, accOneSlotOne, accOneSlotOne[:]) + rawdb.WriteStorageSnapshot(db, accOne, accOneSlotTwo, accOneSlotTwo[:]) + rawdb.WriteSnapshotBlockHash(db, baseBlockHash) + rawdb.WriteSnapshotRoot(db, baseRoot) + + // Create a disk layer based on all above updates + snaps := NewTestTree(db, baseBlockHash, baseRoot) + dl := snaps.disklayer() + dl.genMarker = genMarker + // Modify or delete some accounts, flatten everything onto disk + if err := snaps.Update(diffBlockHash, diffRoot, baseBlockHash, nil, map[common.Hash][]byte{ + accTwo: accTwo[:], + }, nil); err != nil { + t.Fatalf("failed to update snapshot tree: %v", err) + } + if err := snaps.Flatten(diffBlockHash); err != nil { + t.Fatalf("failed to flatten snapshot tree: %v", err) + } + blob := rawdb.ReadSnapshotGenerator(db) + var generator journalGenerator + if err := rlp.DecodeBytes(blob, &generator); err != nil { + t.Fatalf("Failed to decode snapshot generator %v", err) + } + if !bytes.Equal(generator.Marker, genMarker) { + t.Fatalf("Generator marker is not matched") + } + // Test scenario 2, the disk layer is fully generated + // Modify or delete some accounts, flatten everything onto disk + if err := snaps.Update(diffTwoBlockHash, diffTwoRoot, diffBlockHash, nil, map[common.Hash][]byte{ + accThree: accThree.Bytes(), + }, map[common.Hash]map[common.Hash][]byte{ + accThree: {accThreeSlot: accThreeSlot.Bytes()}, + }); err != nil { + t.Fatalf("failed to update snapshot tree: %v", err) + } + dl = snaps.disklayer() + dl.genMarker = nil // Construction finished + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(diffTwoBlockHash); err != nil { + t.Fatalf("failed to flatten snapshot tree: %v", err) + } + blob = rawdb.ReadSnapshotGenerator(db) + if err := rlp.DecodeBytes(blob, &generator); err != nil { + t.Fatalf("Failed to decode snapshot generator %v", err) + } + if len(generator.Marker) != 0 { + t.Fatalf("Failed to update snapshot generator") + } +} + +// Tests that merging something into a disk layer persists it into the database +// and invalidates any previously written and cached values, discarding anything +// after the in-progress generation marker. +// +// This test case is a tiny specialized case of TestDiskPartialMerge, which tests +// some very specific cornercases that random tests won't ever trigger. +func TestDiskMidAccountPartialMerge(t *testing.T) { + // TODO(@karalabe) ? +} + +// TestDiskSeek tests that seek-operations work on the disk layer +func TestDiskSeek(t *testing.T) { + // Create some accounts in the disk layer + var db ethdb.Database = rawdb.NewMemoryDatabase() + + // Fill even keys [0,2,4...] + for i := 0; i < 0xff; i += 2 { + acc := common.Hash{byte(i)} + rawdb.WriteAccountSnapshot(db, acc, acc[:]) + } + // Add an 'higher' key, with incorrect (higher) prefix + highKey := []byte{rawdb.SnapshotAccountPrefix[0] + 1} + db.Put(highKey, []byte{0xff, 0xff}) + + baseRoot := randomHash() + baseBlockHash := randomHash() + rawdb.WriteSnapshotBlockHash(db, baseBlockHash) + rawdb.WriteSnapshotRoot(db, baseRoot) + + snaps := NewTestTree(db, baseBlockHash, baseRoot) + // Test some different seek positions + type testcase struct { + pos byte + expkey byte + } + cases := []testcase{ + {0xff, 0x55}, // this should exit immediately without checking key + {0x01, 0x02}, + {0xfe, 0xfe}, + {0xfd, 0xfe}, + {0x00, 0x00}, + } + for i, tc := range cases { + it, err := snaps.AccountIterator(baseRoot, common.Hash{tc.pos}, false) + if err != nil { + t.Fatalf("case %d, error: %v", i, err) + } + count := 0 + for it.Next() { + k, v, err := it.Hash()[0], it.Account()[0], it.Error() + if err != nil { + t.Fatalf("test %d, item %d, error: %v", i, count, err) + } + // First item in iterator should have the expected key + if count == 0 && k != tc.expkey { + t.Fatalf("test %d, item %d, got %v exp %v", i, count, k, tc.expkey) + } + count++ + if v != k { + t.Fatalf("test %d, item %d, value wrong, got %v exp %v", i, count, v, k) + } + } + } +} diff --git a/core/state/snapshot/generate.go b/core/state/snapshot/generate.go new file mode 100644 index 0000000000..72649e1db1 --- /dev/null +++ b/core/state/snapshot/generate.go @@ -0,0 +1,372 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "encoding/binary" + "fmt" + "math/big" + "time" + + "github.com/VictoriaMetrics/fastcache" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +var ( + // emptyRoot is the known root hash of an empty trie. + emptyRoot = common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421") + + // emptyCode is the known hash of the empty EVM bytecode. + emptyCode = crypto.Keccak256Hash(nil) +) + +// generatorStats is a collection of statistics gathered by the snapshot generator +// for logging purposes. +type generatorStats struct { + wiping chan struct{} // Notification channel if wiping is in progress + origin uint64 // Origin prefix where generation started + start time.Time // Timestamp when generation started + accounts uint64 // Number of accounts indexed(generated or recovered) + slots uint64 // Number of storage slots indexed(generated or recovered) + storage common.StorageSize // Total account and storage slot size(generation or recovery) +} + +// Log creates an contextual log with the given message and the context pulled +// from the internally maintained statistics. +func (gs *generatorStats) Log(msg string, root common.Hash, marker []byte) { + var ctx []interface{} + if root != (common.Hash{}) { + ctx = append(ctx, []interface{}{"root", root}...) + } + // Figure out whether we're after or within an account + switch len(marker) { + case common.HashLength: + ctx = append(ctx, []interface{}{"at", common.BytesToHash(marker)}...) + case 2 * common.HashLength: + ctx = append(ctx, []interface{}{ + "in", common.BytesToHash(marker[:common.HashLength]), + "at", common.BytesToHash(marker[common.HashLength:]), + }...) + } + // Add the usual measurements + ctx = append(ctx, []interface{}{ + "accounts", gs.accounts, + "slots", gs.slots, + "storage", gs.storage, + "elapsed", common.PrettyDuration(time.Since(gs.start)), + }...) + // Calculate the estimated indexing time based on current stats + if len(marker) > 0 { + if done := binary.BigEndian.Uint64(marker[:8]) - gs.origin; done > 0 { + left := math.MaxUint64 - binary.BigEndian.Uint64(marker[:8]) + + speed := done/uint64(time.Since(gs.start)/time.Millisecond+1) + 1 // +1s to avoid division by zero + ctx = append(ctx, []interface{}{ + "eta", common.PrettyDuration(time.Duration(left/speed) * time.Millisecond), + }...) + } + } + log.Info(msg, ctx...) +} + +// generateSnapshot regenerates a brand new snapshot based on an existing state +// database and head block asynchronously. The snapshot is returned immediately +// and generation is continued in the background until done. +func generateSnapshot(diskdb ethdb.KeyValueStore, triedb *trie.Database, cache int, blockHash, root common.Hash, wiper chan struct{}) *diskLayer { + // Wipe any previously existing snapshot from the database if no wiper is + // currently in progress. + if wiper == nil { + wiper = wipeSnapshot(diskdb, true) + } + // Create a new disk layer with an initialized state marker at zero + var ( + stats = &generatorStats{wiping: wiper, start: time.Now()} + batch = diskdb.NewBatch() + genMarker = []byte{} // Initialized but empty! + ) + rawdb.WriteSnapshotBlockHash(batch, blockHash) + rawdb.WriteSnapshotRoot(batch, root) + journalProgress(batch, genMarker, stats) + if err := batch.Write(); err != nil { + log.Crit("Failed to write initialized state marker", "err", err) + } + base := &diskLayer{ + diskdb: diskdb, + triedb: triedb, + blockHash: blockHash, + root: root, + cache: fastcache.New(cache * 1024 * 1024), + genMarker: genMarker, + genPending: make(chan struct{}), + genAbort: make(chan chan struct{}), + created: time.Now(), + } + go base.generate(stats) + log.Debug("Start snapshot generation", "root", root) + return base +} + +// journalProgress persists the generator stats into the database to resume later. +func journalProgress(db ethdb.KeyValueWriter, marker []byte, stats *generatorStats) { + // Write out the generator marker. Note it's a standalone disk layer generator + // which is not mixed with journal. It's ok if the generator is persisted while + // journal is not. + entry := journalGenerator{ + Done: marker == nil, + Marker: marker, + } + if stats != nil { + entry.Wiping = (stats.wiping != nil) + entry.Accounts = stats.accounts + entry.Slots = stats.slots + entry.Storage = uint64(stats.storage) + } + blob, err := rlp.EncodeToBytes(entry) + if err != nil { + panic(err) // Cannot happen, here to catch dev errors + } + var logstr string + switch { + case marker == nil: + logstr = "done" + case bytes.Equal(marker, []byte{}): + logstr = "empty" + case len(marker) == common.HashLength: + logstr = fmt.Sprintf("%#x", marker) + default: + logstr = fmt.Sprintf("%#x:%#x", marker[:common.HashLength], marker[common.HashLength:]) + } + log.Debug("Journalled generator progress", "progress", logstr) + rawdb.WriteSnapshotGenerator(db, blob) +} + +// checkAndFlush checks to see if snapshot generation has been aborted or if +// the current batch size is greater than ethdb.IdealBatchSize. If so, it saves +// the current progress to disk and returns true. Else, it could log current +// progress and returns true. +func (dl *diskLayer) checkAndFlush(batch ethdb.Batch, stats *generatorStats, currentLocation []byte) bool { + // If we've exceeded our batch allowance or termination was requested, flush to disk + var abort chan struct{} + select { + case abort = <-dl.genAbort: + default: + } + if batch.ValueSize() > ethdb.IdealBatchSize || abort != nil { + if bytes.Compare(currentLocation, dl.genMarker) < 0 { + log.Error("Snapshot generator went backwards", + "currentLocation", fmt.Sprintf("%x", currentLocation), + "genMarker", fmt.Sprintf("%x", dl.genMarker)) + } + // Flush out the batch anyway no matter it's empty or not. + // It's possible that all the states are recovered and the + // generation indeed makes progress. + journalProgress(batch, currentLocation, stats) + + if err := batch.Write(); err != nil { + log.Error("Failed to flush batch", "err", err) + if abort == nil { + abort = <-dl.genAbort + } + dl.genStats = stats + close(abort) + return true + } + batch.Reset() + + dl.lock.Lock() + dl.genMarker = currentLocation + dl.lock.Unlock() + + if abort != nil { + stats.Log("Aborting state snapshot generation", dl.root, currentLocation) + dl.genStats = stats + close(abort) + return true + } + } + if time.Since(dl.logged) > 8*time.Second { + stats.Log("Generating state snapshot", dl.root, currentLocation) + dl.logged = time.Now() + } + return false +} + +// generate is a background thread that iterates over the state and storage tries, +// constructing the state snapshot. All the arguments are purely for statistics +// gathering and logging, since the method surfs the blocks as they arrive, often +// being restarted. +func (dl *diskLayer) generate(stats *generatorStats) { + // If a database wipe is in operation, wait until it's done + if stats.wiping != nil { + stats.Log("Wiper running, state snapshotting paused", common.Hash{}, dl.genMarker) + select { + // If wiper is done, resume normal mode of operation + case <-stats.wiping: + stats.wiping = nil + stats.start = time.Now() + + // If generator was aborted during wipe, return + case abort := <-dl.genAbort: + stats.Log("Aborting state snapshot generation", dl.root, dl.genMarker) + dl.genStats = stats + close(abort) + return + } + } + // Create an account and state iterator pointing to the current generator marker + accTrie, err := trie.NewSecure(dl.root, dl.triedb) + if err != nil { + // The account trie is missing (GC), surf the chain until one becomes available + stats.Log("Trie missing, state snapshotting paused", dl.root, dl.genMarker) + abort := <-dl.genAbort + dl.genStats = stats + close(abort) + return + } + stats.Log("Resuming state snapshot generation", dl.root, dl.genMarker) + + var accMarker []byte + if len(dl.genMarker) > 0 { // []byte{} is the start, use nil for that + accMarker = dl.genMarker[:common.HashLength] + } + accIt := trie.NewIterator(accTrie.NodeIterator(accMarker)) + batch := dl.diskdb.NewBatch() + + // Iterate from the previous marker and continue generating the state snapshot + dl.logged = time.Now() + for accIt.Next() { + // Retrieve the current account and flatten it into the internal format + accountHash := common.BytesToHash(accIt.Key) + + var acc struct { + Nonce uint64 + Balance *big.Int + Root common.Hash + CodeHash []byte + } + if err := rlp.DecodeBytes(accIt.Value, &acc); err != nil { + log.Crit("Invalid account encountered during snapshot creation", "err", err) + } + data := SlimAccountRLP(acc.Nonce, acc.Balance, acc.Root, acc.CodeHash) + + // If the account is not yet in-progress, write it out + if accMarker == nil || !bytes.Equal(accountHash[:], accMarker) { + rawdb.WriteAccountSnapshot(batch, accountHash, data) + stats.storage += common.StorageSize(1 + common.HashLength + len(data)) + stats.accounts++ + } + marker := accountHash[:] + // If the snap generation goes here after interrupted, genMarker may go backward + // when last genMarker is consisted of accountHash and storageHash + if accMarker != nil && bytes.Equal(marker, accMarker) && len(dl.genMarker) > common.HashLength { + marker = dl.genMarker[:] + } + if dl.checkAndFlush(batch, stats, marker) { + // checkAndFlush handles abort + return + } + // If the iterated account is a contract, iterate through corresponding contract + // storage to generate snapshot entries. + if acc.Root != emptyRoot { + storeTrie, err := trie.NewSecure(acc.Root, dl.triedb) + if err != nil { + log.Error("Generator failed to access storage trie", "root", dl.root, "account", accountHash, "stroot", acc.Root, "err", err) + abort := <-dl.genAbort + dl.genStats = stats + close(abort) + return + } + var storeMarker []byte + if accMarker != nil && bytes.Equal(accountHash[:], accMarker) && len(dl.genMarker) > common.HashLength { + storeMarker = dl.genMarker[common.HashLength:] + } + storeIt := trie.NewIterator(storeTrie.NodeIterator(storeMarker)) + for storeIt.Next() { + rawdb.WriteStorageSnapshot(batch, accountHash, common.BytesToHash(storeIt.Key), storeIt.Value) + stats.storage += common.StorageSize(1 + 2*common.HashLength + len(storeIt.Value)) + stats.slots++ + + if dl.checkAndFlush(batch, stats, append(accountHash[:], storeIt.Key...)) { + // checkAndFlush handles abort + return + } + } + if err := storeIt.Err; err != nil { + log.Error("Generator failed to iterate storage trie", "accroot", dl.root, "acchash", common.BytesToHash(accIt.Key), "stroot", acc.Root, "err", err) + abort := <-dl.genAbort + dl.genStats = stats + close(abort) + return + } + } + if time.Since(dl.logged) > 8*time.Second { + stats.Log("Generating state snapshot", dl.root, accIt.Key) + dl.logged = time.Now() + } + // Some account processed, unmark the marker + accMarker = nil + } + if err := accIt.Err; err != nil { + log.Error("Generator failed to iterate account trie", "root", dl.root, "err", err) + abort := <-dl.genAbort + dl.genStats = stats + close(abort) + return + } + // Snapshot fully generated, set the marker to nil. + // Note even there is nothing to commit, persist the + // generator anyway to mark the snapshot is complete. + journalProgress(batch, nil, stats) + if err := batch.Write(); err != nil { + log.Error("Failed to flush batch", "err", err) + abort := <-dl.genAbort + dl.genStats = stats + close(abort) + return + } + + log.Info("Generated state snapshot", "accounts", stats.accounts, "slots", stats.slots, + "storage", stats.storage, "elapsed", common.PrettyDuration(time.Since(stats.start))) + + dl.lock.Lock() + dl.genMarker = nil + dl.genStats = stats + close(dl.genPending) + dl.lock.Unlock() + + // Someone will be looking for us, wait it out + abort := <-dl.genAbort + close(abort) +} diff --git a/core/state/snapshot/generate_test.go b/core/state/snapshot/generate_test.go new file mode 100644 index 0000000000..b44655bca0 --- /dev/null +++ b/core/state/snapshot/generate_test.go @@ -0,0 +1,837 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "fmt" + "math/big" + "os" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/rawdb" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" + "golang.org/x/crypto/sha3" +) + +// Tests that snapshot generation from an empty database. +func TestGeneration(t *testing.T) { + // We can't use statedb to make a test trie (circular dependency), so make + // a fake one manually. We're going with a small account trie of 3 accounts, + // two of which also has the same 3-slot storage trie attached. + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + stTrie.Update([]byte("key-1"), []byte("val-1")) // 0x1314700b81afc49f94db3623ef1df38f3ed18b73a1b7ea2f6c095118cf6118a0 + stTrie.Update([]byte("key-2"), []byte("val-2")) // 0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371 + stTrie.Update([]byte("key-3"), []byte("val-3")) // 0x51c71a47af0695957647fb68766d0becee77e953df17c29b3c2f25436f055c78 + stTrie.Commit(nil) // Root: 0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67 + + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + + acc = &Account{Balance: big.NewInt(2), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-2"), val) // 0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7 + + acc = &Account{Balance: big.NewInt(3), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-3"), val) // 0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2 + root, _, _ := accTrie.Commit(nil) // Root: 0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd + triedb.Commit(root, false, nil) + + if have, want := root, common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"); have != want { + t.Fatalf("have %#x want %#x", have, want) + } + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), root, nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +func hashData(input []byte) common.Hash { + hasher := sha3.NewLegacyKeccak256() + var hash common.Hash + hasher.Reset() + hasher.Write(input) + hasher.Sum(hash[:0]) + return hash +} + +// Tests that snapshot generation with existent flat state. +func TestGenerateExistentState(t *testing.T) { + // We can't use statedb to make a test trie (circular dependency), so make + // a fake one manually. We're going with a small account trie of 3 accounts, + // two of which also has the same 3-slot storage trie attached. + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + stTrie.Update([]byte("key-1"), []byte("val-1")) // 0x1314700b81afc49f94db3623ef1df38f3ed18b73a1b7ea2f6c095118cf6118a0 + stTrie.Update([]byte("key-2"), []byte("val-2")) // 0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371 + stTrie.Update([]byte("key-3"), []byte("val-3")) // 0x51c71a47af0695957647fb68766d0becee77e953df17c29b3c2f25436f055c78 + stTrie.Commit(nil) // Root: 0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67 + + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + rawdb.WriteAccountSnapshot(diskdb, hashData([]byte("acc-1")), val) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-1")), hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-1")), hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-1")), hashData([]byte("key-3")), []byte("val-3")) + + acc = &Account{Balance: big.NewInt(2), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-2"), val) // 0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7 + diskdb.Put(hashData([]byte("acc-2")).Bytes(), val) + rawdb.WriteAccountSnapshot(diskdb, hashData([]byte("acc-2")), val) + + acc = &Account{Balance: big.NewInt(3), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-3"), val) // 0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2 + rawdb.WriteAccountSnapshot(diskdb, hashData([]byte("acc-3")), val) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-3")), hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-3")), hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-3")), hashData([]byte("key-3")), []byte("val-3")) + + root, _, _ := accTrie.Commit(nil) // Root: 0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), root, nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +func checkSnapRoot(t *testing.T, snap *diskLayer, trieRoot common.Hash) { + t.Helper() + accIt := snap.AccountIterator(common.Hash{}) + defer accIt.Release() + snapRoot, err := generateTrieRoot(nil, accIt, common.Hash{}, stackTrieGenerate, + func(db ethdb.KeyValueWriter, accountHash, codeHash common.Hash, stat *generateStats) (common.Hash, error) { + storageIt, _ := snap.StorageIterator(accountHash, common.Hash{}) + defer storageIt.Release() + + hash, err := generateTrieRoot(nil, storageIt, accountHash, stackTrieGenerate, nil, stat, false) + if err != nil { + return common.Hash{}, err + } + return hash, nil + }, newGenerateStats(), true) + if err != nil { + t.Fatal(err) + } + if snapRoot != trieRoot { + t.Fatalf("snaproot: %#x != trieroot #%x", snapRoot, trieRoot) + } +} + +type testHelper struct { + diskdb *memorydb.Database + triedb *trie.Database + accTrie *trie.SecureTrie +} + +func newHelper() *testHelper { + diskdb := memorydb.New() + triedb := trie.NewDatabase(diskdb) + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + return &testHelper{ + diskdb: diskdb, + triedb: triedb, + accTrie: accTrie, + } +} + +func (t *testHelper) addTrieAccount(acckey string, acc *Account) { + val, _ := rlp.EncodeToBytes(acc) + t.accTrie.Update([]byte(acckey), val) +} + +func (t *testHelper) addSnapAccount(acckey string, acc *Account) { + val, _ := rlp.EncodeToBytes(acc) + key := hashData([]byte(acckey)) + rawdb.WriteAccountSnapshot(t.diskdb, key, val) +} + +func (t *testHelper) addAccount(acckey string, acc *Account) { + t.addTrieAccount(acckey, acc) + t.addSnapAccount(acckey, acc) +} + +func (t *testHelper) addSnapStorage(accKey string, keys []string, vals []string) { + accHash := hashData([]byte(accKey)) + for i, key := range keys { + rawdb.WriteStorageSnapshot(t.diskdb, accHash, hashData([]byte(key)), []byte(vals[i])) + } +} + +func (t *testHelper) makeStorageTrie(keys []string, vals []string) []byte { + stTrie, _ := trie.NewSecure(common.Hash{}, t.triedb) + for i, k := range keys { + stTrie.Update([]byte(k), []byte(vals[i])) + } + root, _, _ := stTrie.Commit(nil) + return root.Bytes() +} + +func (t *testHelper) Generate() (common.Hash, *diskLayer) { + root, _, _ := t.accTrie.Commit(nil) + t.triedb.Commit(root, false, nil) + snap := generateSnapshot(t.diskdb, t.triedb, 16, common.HexToHash("0xdeadbeef"), root, nil) + return root, snap +} + +// Tests that snapshot generation with existent flat state, where the flat state +// contains some errors: +// - the contract with empty storage root but has storage entries in the disk +// - the contract with non empty storage root but empty storage slots +// - the contract(non-empty storage) misses some storage slots +// - miss in the beginning +// - miss in the middle +// - miss in the end +// - the contract(non-empty storage) has wrong storage slots +// - wrong slots in the beginning +// - wrong slots in the middle +// - wrong slots in the end +// - the contract(non-empty storage) has extra storage slots +// - extra slots in the beginning +// - extra slots in the middle +// - extra slots in the end +func TestGenerateExistentStateWithWrongStorage(t *testing.T) { + helper := newHelper() + stRoot := helper.makeStorageTrie([]string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + + // Account one, empty root but non-empty database + helper.addAccount("acc-1", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-1", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + + // Account two, non empty root but empty database + helper.addAccount("acc-2", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + + // Miss slots + { + // Account three, non empty root but misses slots in the beginning + helper.addAccount("acc-3", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-3", []string{"key-2", "key-3"}, []string{"val-2", "val-3"}) + + // Account four, non empty root but misses slots in the middle + helper.addAccount("acc-4", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-4", []string{"key-1", "key-3"}, []string{"val-1", "val-3"}) + + // Account five, non empty root but misses slots in the end + helper.addAccount("acc-5", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-5", []string{"key-1", "key-2"}, []string{"val-1", "val-2"}) + } + + // Wrong storage slots + { + // Account six, non empty root but wrong slots in the beginning + helper.addAccount("acc-6", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-6", []string{"key-1", "key-2", "key-3"}, []string{"badval-1", "val-2", "val-3"}) + + // Account seven, non empty root but wrong slots in the middle + helper.addAccount("acc-7", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-7", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "badval-2", "val-3"}) + + // Account eight, non empty root but wrong slots in the end + helper.addAccount("acc-8", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-8", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "badval-3"}) + + // Account 9, non empty root but rotated slots + helper.addAccount("acc-9", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-9", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-3", "val-2"}) + } + + // Extra storage slots + { + // Account 10, non empty root but extra slots in the beginning + helper.addAccount("acc-10", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-10", []string{"key-0", "key-1", "key-2", "key-3"}, []string{"val-0", "val-1", "val-2", "val-3"}) + + // Account 11, non empty root but extra slots in the middle + helper.addAccount("acc-11", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-11", []string{"key-1", "key-2", "key-2-1", "key-3"}, []string{"val-1", "val-2", "val-2-1", "val-3"}) + + // Account 12, non empty root but extra slots in the end + helper.addAccount("acc-12", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-12", []string{"key-1", "key-2", "key-3", "key-4"}, []string{"val-1", "val-2", "val-3", "val-4"}) + } + + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root = 0x8746cce9fd9c658b2cfd639878ed6584b7a2b3e73bb40f607fcfa156002429a0 + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +// Tests that snapshot generation with existent flat state, where the flat state +// contains some errors: +// - miss accounts +// - wrong accounts +// - extra accounts +func TestGenerateExistentStateWithWrongAccounts(t *testing.T) { + helper := newHelper() + stRoot := helper.makeStorageTrie([]string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + + // Trie accounts [acc-1, acc-2, acc-3, acc-4, acc-6] + // Extra accounts [acc-0, acc-5, acc-7] + + // Missing accounts, only in the trie + { + helper.addTrieAccount("acc-1", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) // Beginning + helper.addTrieAccount("acc-4", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) // Middle + helper.addTrieAccount("acc-6", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) // End + } + + // Wrong accounts + { + helper.addTrieAccount("acc-2", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapAccount("acc-2", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: common.Hex2Bytes("0x1234")}) + + helper.addTrieAccount("acc-3", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapAccount("acc-3", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()}) + } + + // Extra accounts, only in the snap + { + helper.addSnapAccount("acc-0", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyRoot.Bytes()}) // before the beginning + helper.addSnapAccount("acc-5", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: common.Hex2Bytes("0x1234")}) // Middle + helper.addSnapAccount("acc-7", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyRoot.Bytes()}) // after the end + } + + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root = 0x825891472281463511e7ebcc7f109e4f9200c20fa384754e11fd605cd98464e8 + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +// Tests that snapshot generation errors out correctly in case of a missing trie +// node in the account trie. +func TestGenerateCorruptAccountTrie(t *testing.T) { + // We can't use statedb to make a test trie (circular dependency), so make + // a fake one manually. We're going with a small account trie of 3 accounts, + // without any storage slots to keep the test smaller. + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + tr, _ := trie.NewSecure(common.Hash{}, triedb) + acc := &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + tr.Update([]byte("acc-1"), val) // 0x7dd654835190324640832972b7c4c6eaa0c50541e36766d054ed57721f1dc7eb + + acc = &Account{Balance: big.NewInt(2), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + tr.Update([]byte("acc-2"), val) // 0xf73118e0254ce091588d66038744a0afae5f65a194de67cff310c683ae43329e + + acc = &Account{Balance: big.NewInt(3), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + tr.Update([]byte("acc-3"), val) // 0x515d3de35e143cd976ad476398d910aa7bf8a02e8fd7eb9e3baacddbbcbfcb41 + tr.Commit(nil) // Root: 0xa04693ea110a31037fb5ee814308a6f1d76bdab0b11676bdf4541d2de55ba978 + + // Delete an account trie leaf and ensure the generator chokes + triedb.Commit(common.HexToHash("0xa04693ea110a31037fb5ee814308a6f1d76bdab0b11676bdf4541d2de55ba978"), false, nil) + diskdb.Delete(common.HexToHash("0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7").Bytes()) + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), common.HexToHash("0xa04693ea110a31037fb5ee814308a6f1d76bdab0b11676bdf4541d2de55ba978"), nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + t.Errorf("Snapshot generated against corrupt account trie") + + case <-time.After(250 * time.Millisecond): + // Not generated fast enough, hopefully blocked inside on missing trie node fail + } + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +// Tests that snapshot generation errors out correctly in case of a missing root +// trie node for a storage trie. It's similar to internal corruption but it is +// handled differently inside the generator. +func TestGenerateMissingStorageTrie(t *testing.T) { + // We can't use statedb to make a test trie (circular dependency), so make + // a fake one manually. We're going with a small account trie of 3 accounts, + // two of which also has the same 3-slot storage trie attached. + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + stTrie.Update([]byte("key-1"), []byte("val-1")) // 0x1314700b81afc49f94db3623ef1df38f3ed18b73a1b7ea2f6c095118cf6118a0 + stTrie.Update([]byte("key-2"), []byte("val-2")) // 0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371 + stTrie.Update([]byte("key-3"), []byte("val-3")) // 0x51c71a47af0695957647fb68766d0becee77e953df17c29b3c2f25436f055c78 + stTrie.Commit(nil) // Root: 0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67 + + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + + acc = &Account{Balance: big.NewInt(2), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-2"), val) // 0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7 + + acc = &Account{Balance: big.NewInt(3), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-3"), val) // 0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2 + accTrie.Commit(nil) // Root: 0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd + + // We can only corrupt the disk database, so flush the tries out + triedb.Reference( + common.HexToHash("0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67"), + common.HexToHash("0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e"), + ) + triedb.Reference( + common.HexToHash("0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67"), + common.HexToHash("0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2"), + ) + triedb.Commit(common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"), false, nil) + + // Delete a storage trie root and ensure the generator chokes + diskdb.Delete(common.HexToHash("0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67").Bytes()) + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"), nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + t.Errorf("Snapshot generated against corrupt storage trie") + + case <-time.After(250 * time.Millisecond): + // Not generated fast enough, hopefully blocked inside on missing trie node fail + } + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +// Tests that snapshot generation errors out correctly in case of a missing trie +// node in a storage trie. +func TestGenerateCorruptStorageTrie(t *testing.T) { + // We can't use statedb to make a test trie (circular dependency), so make + // a fake one manually. We're going with a small account trie of 3 accounts, + // two of which also has the same 3-slot storage trie attached. + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + stTrie.Update([]byte("key-1"), []byte("val-1")) // 0x1314700b81afc49f94db3623ef1df38f3ed18b73a1b7ea2f6c095118cf6118a0 + stTrie.Update([]byte("key-2"), []byte("val-2")) // 0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371 + stTrie.Update([]byte("key-3"), []byte("val-3")) // 0x51c71a47af0695957647fb68766d0becee77e953df17c29b3c2f25436f055c78 + stTrie.Commit(nil) // Root: 0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67 + + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + + acc = &Account{Balance: big.NewInt(2), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-2"), val) // 0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7 + + acc = &Account{Balance: big.NewInt(3), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-3"), val) // 0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2 + accTrie.Commit(nil) // Root: 0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd + + // We can only corrupt the disk database, so flush the tries out + triedb.Reference( + common.HexToHash("0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67"), + common.HexToHash("0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e"), + ) + triedb.Reference( + common.HexToHash("0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67"), + common.HexToHash("0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2"), + ) + triedb.Commit(common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"), false, nil) + + // Delete a storage trie leaf and ensure the generator chokes + diskdb.Delete(common.HexToHash("0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371").Bytes()) + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"), nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + t.Errorf("Snapshot generated against corrupt storage trie") + + case <-time.After(250 * time.Millisecond): + // Not generated fast enough, hopefully blocked inside on missing trie node fail + } + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +func getStorageTrie(n int, triedb *trie.Database) *trie.SecureTrie { + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + for i := 0; i < n; i++ { + k := fmt.Sprintf("key-%d", i) + v := fmt.Sprintf("val-%d", i) + stTrie.Update([]byte(k), []byte(v)) + } + stTrie.Commit(nil) + return stTrie +} + +// Tests that snapshot generation when an extra account with storage exists in the snap state. +func TestGenerateWithExtraAccounts(t *testing.T) { + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + stTrie = getStorageTrie(5, triedb) + ) + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + { // Account one in the trie + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + // Identical in the snap + key := hashData([]byte("acc-1")) + rawdb.WriteAccountSnapshot(diskdb, key, val) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-3")), []byte("val-3")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-4")), []byte("val-4")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-5")), []byte("val-5")) + } + { // Account two exists only in the snapshot + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + key := hashData([]byte("acc-2")) + rawdb.WriteAccountSnapshot(diskdb, key, val) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("b-key-1")), []byte("b-val-1")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("b-key-2")), []byte("b-val-2")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("b-key-3")), []byte("b-val-3")) + } + root, _, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + // To verify the test: If we now inspect the snap db, there should exist extraneous storage items + if data := rawdb.ReadStorageSnapshot(diskdb, hashData([]byte("acc-2")), hashData([]byte("b-key-1"))); data == nil { + t.Fatalf("expected snap storage to exist") + } + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), root, nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop + // If we now inspect the snap db, there should exist no extraneous storage items + if data := rawdb.ReadStorageSnapshot(diskdb, hashData([]byte("acc-2")), hashData([]byte("b-key-1"))); data != nil { + t.Fatalf("expected slot to be removed, got %v", string(data)) + } +} + +func enableLogging() { + log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true)))) +} + +// Tests that snapshot generation when an extra account with storage exists in the snap state. +func TestGenerateWithManyExtraAccounts(t *testing.T) { + if false { + enableLogging() + } + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + stTrie = getStorageTrie(3, triedb) + ) + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + { // Account one in the trie + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + // Identical in the snap + key := hashData([]byte("acc-1")) + rawdb.WriteAccountSnapshot(diskdb, key, val) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-3")), []byte("val-3")) + } + { // 100 accounts exist only in snapshot + for i := 0; i < 1000; i++ { + // acc := &Account{Balance: big.NewInt(int64(i)), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + acc := &Account{Balance: big.NewInt(int64(i)), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + key := hashData([]byte(fmt.Sprintf("acc-%d", i))) + rawdb.WriteAccountSnapshot(diskdb, key, val) + } + } + root, _, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), root, nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(5 * time.Second): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +// Tests this case +// maxAccountRange 3 +// snapshot-accounts: 01, 02, 03, 04, 05, 06, 07 +// trie-accounts: 03, 07 +// +// We iterate three snapshot storage slots (max = 3) from the database. They are 0x01, 0x02, 0x03. +// The trie has a lot of deletions. +// So in trie, we iterate 2 entries 0x03, 0x07. We create the 0x07 in the database and abort the procedure, because the trie is exhausted. +// But in the database, we still have the stale storage slots 0x04, 0x05. They are not iterated yet, but the procedure is finished. +func TestGenerateWithExtraBeforeAndAfter(t *testing.T) { + if false { + enableLogging() + } + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + accTrie, _ := trie.New(common.Hash{}, triedb) + { + acc := &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update(common.HexToHash("0x03").Bytes(), val) + accTrie.Update(common.HexToHash("0x07").Bytes(), val) + + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x01"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x02"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x03"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x04"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x05"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x06"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x07"), val) + } + + root, _, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), root, nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +// TestGenerateWithMalformedSnapdata tests what happes if we have some junk +// in the snapshot database, which cannot be parsed back to an account +func TestGenerateWithMalformedSnapdata(t *testing.T) { + if false { + enableLogging() + } + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + accTrie, _ := trie.New(common.Hash{}, triedb) + { + acc := &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update(common.HexToHash("0x03").Bytes(), val) + + junk := make([]byte, 100) + copy(junk, []byte{0xde, 0xad}) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x02"), junk) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x03"), junk) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x04"), junk) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x05"), junk) + } + + root, _, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xdeadbeef"), root, nil) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop + // If we now inspect the snap db, there should exist no extraneous storage items + if data := rawdb.ReadStorageSnapshot(diskdb, hashData([]byte("acc-2")), hashData([]byte("b-key-1"))); data != nil { + t.Fatalf("expected slot to be removed, got %v", string(data)) + } +} + +func TestGenerateFromEmptySnap(t *testing.T) { + // enableLogging() + helper := newHelper() + stRoot := helper.makeStorageTrie([]string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + // Add 1K accounts to the trie + for i := 0; i < 400; i++ { + helper.addTrieAccount(fmt.Sprintf("acc-%d", i), + &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + } + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root: 0x6f7af6d2e1a1bf2b84a3beb3f8b64388465fbc1e274ca5d5d3fc787ca78f59e4 + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(1 * time.Second): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} + +// Tests that snapshot generation with existent flat state, where the flat state +// storage is correct, but incomplete. +// The incomplete part is on the second range +// snap: [ 0x01, 0x02, 0x03, 0x04] , [ 0x05, 0x06, 0x07, {missing}] (with storageCheck = 4) +// trie: 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 +// This hits a case where the snap verification passes, but there are more elements in the trie +// which we must also add. +func TestGenerateWithIncompleteStorage(t *testing.T) { + helper := newHelper() + stKeys := []string{"1", "2", "3", "4", "5", "6", "7", "8"} + stVals := []string{"v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8"} + stRoot := helper.makeStorageTrie(stKeys, stVals) + // We add 8 accounts, each one is missing exactly one of the storage slots. This means + // we don't have to order the keys and figure out exactly which hash-key winds up + // on the sensitive spots at the boundaries + for i := 0; i < 8; i++ { + accKey := fmt.Sprintf("acc-%d", i) + helper.addAccount(accKey, &Account{Balance: big.NewInt(int64(i)), Root: stRoot, CodeHash: emptyCode.Bytes()}) + var moddedKeys []string + var moddedVals []string + for ii := 0; ii < 8; ii++ { + if ii != i { + moddedKeys = append(moddedKeys, stKeys[ii]) + moddedVals = append(moddedVals, stVals[ii]) + } + } + helper.addSnapStorage(accKey, moddedKeys, moddedVals) + } + + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root: 0xca73f6f05ba4ca3024ef340ef3dfca8fdabc1b677ff13f5a9571fd49c16e67ff + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan struct{}) + snap.genAbort <- stop + <-stop +} diff --git a/core/state/snapshot/iterator.go b/core/state/snapshot/iterator.go new file mode 100644 index 0000000000..bb1d8903b6 --- /dev/null +++ b/core/state/snapshot/iterator.go @@ -0,0 +1,410 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "fmt" + "sort" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" +) + +// Iterator is an iterator to step over all the accounts or the specific +// storage in a snapshot which may or may not be composed of multiple layers. +type Iterator interface { + // Next steps the iterator forward one element, returning false if exhausted, + // or an error if iteration failed for some reason (e.g. root being iterated + // becomes stale and garbage collected). + Next() bool + + // Error returns any failure that occurred during iteration, which might have + // caused a premature iteration exit (e.g. snapshot stack becoming stale). + Error() error + + // Hash returns the hash of the account or storage slot the iterator is + // currently at. + Hash() common.Hash + + // Release releases associated resources. Release should always succeed and + // can be called multiple times without causing error. + Release() +} + +// AccountIterator is an iterator to step over all the accounts in a snapshot, +// which may or may not be composed of multiple layers. +type AccountIterator interface { + Iterator + + // Account returns the RLP encoded slim account the iterator is currently at. + // An error will be returned if the iterator becomes invalid + Account() []byte +} + +// StorageIterator is an iterator to step over the specific storage in a snapshot, +// which may or may not be composed of multiple layers. +type StorageIterator interface { + Iterator + + // Slot returns the storage slot the iterator is currently at. An error will + // be returned if the iterator becomes invalid + Slot() []byte +} + +// diffAccountIterator is an account iterator that steps over the accounts (both +// live and deleted) contained within a single diff layer. Higher order iterators +// will use the deleted accounts to skip deeper iterators. +type diffAccountIterator struct { + // curHash is the current hash the iterator is positioned on. The field is + // explicitly tracked since the referenced diff layer might go stale after + // the iterator was positioned and we don't want to fail accessing the old + // hash as long as the iterator is not touched any more. + curHash common.Hash + + layer *diffLayer // Live layer to retrieve values from + keys []common.Hash // Keys left in the layer to iterate + fail error // Any failures encountered (stale) +} + +// AccountIterator creates an account iterator over a single diff layer. +func (dl *diffLayer) AccountIterator(seek common.Hash) AccountIterator { + // Seek out the requested starting account + hashes := dl.AccountList() + index := sort.Search(len(hashes), func(i int) bool { + return bytes.Compare(seek[:], hashes[i][:]) <= 0 + }) + // Assemble and returned the already seeked iterator + return &diffAccountIterator{ + layer: dl, + keys: hashes[index:], + } +} + +// Next steps the iterator forward one element, returning false if exhausted. +func (it *diffAccountIterator) Next() bool { + // If the iterator was already stale, consider it a programmer error. Although + // we could just return false here, triggering this path would probably mean + // somebody forgot to check for Error, so lets blow up instead of undefined + // behavior that's hard to debug. + if it.fail != nil { + panic(fmt.Sprintf("called Next of failed iterator: %v", it.fail)) + } + // Stop iterating if all keys were exhausted + if len(it.keys) == 0 { + return false + } + if it.layer.Stale() { + it.fail, it.keys = ErrSnapshotStale, nil + return false + } + // Iterator seems to be still alive, retrieve and cache the live hash + it.curHash = it.keys[0] + // key cached, shift the iterator and notify the user of success + it.keys = it.keys[1:] + return true +} + +// Error returns any failure that occurred during iteration, which might have +// caused a premature iteration exit (e.g. snapshot stack becoming stale). +func (it *diffAccountIterator) Error() error { + return it.fail +} + +// Hash returns the hash of the account the iterator is currently at. +func (it *diffAccountIterator) Hash() common.Hash { + return it.curHash +} + +// Account returns the RLP encoded slim account the iterator is currently at. +// This method may _fail_, if the underlying layer has been flattened between +// the call to Next and Account. That type of error will set it.Err. +// This method assumes that flattening does not delete elements from +// the accountdata mapping (writing nil into it is fine though), and will panic +// if elements have been deleted. +// +// Note the returned account is not a copy, please don't modify it. +func (it *diffAccountIterator) Account() []byte { + it.layer.lock.RLock() + blob, ok := it.layer.accountData[it.curHash] + if !ok { + if _, ok := it.layer.destructSet[it.curHash]; ok { + it.layer.lock.RUnlock() + return nil + } + panic(fmt.Sprintf("iterator referenced non-existent account: %x", it.curHash)) + } + it.layer.lock.RUnlock() + if it.layer.Stale() { + it.fail, it.keys = ErrSnapshotStale, nil + } + return blob +} + +// Release is a noop for diff account iterators as there are no held resources. +func (it *diffAccountIterator) Release() {} + +// diskAccountIterator is an account iterator that steps over the live accounts +// contained within a disk layer. +type diskAccountIterator struct { + layer *diskLayer + it ethdb.Iterator +} + +// AccountIterator creates an account iterator over a disk layer. +func (dl *diskLayer) AccountIterator(seek common.Hash) AccountIterator { + pos := common.TrimRightZeroes(seek[:]) + return &diskAccountIterator{ + layer: dl, + it: dl.diskdb.NewIterator(rawdb.SnapshotAccountPrefix, pos), + } +} + +// Next steps the iterator forward one element, returning false if exhausted. +func (it *diskAccountIterator) Next() bool { + // If the iterator was already exhausted, don't bother + if it.it == nil { + return false + } + // Try to advance the iterator and release it if we reached the end + for { + if !it.it.Next() { + it.it.Release() + it.it = nil + return false + } + if len(it.it.Key()) == len(rawdb.SnapshotAccountPrefix)+common.HashLength { + break + } + } + return true +} + +// Error returns any failure that occurred during iteration, which might have +// caused a premature iteration exit (e.g. snapshot stack becoming stale). +// +// A diff layer is immutable after creation content wise and can always be fully +// iterated without error, so this method always returns nil. +func (it *diskAccountIterator) Error() error { + if it.it == nil { + return nil // Iterator is exhausted and released + } + return it.it.Error() +} + +// Hash returns the hash of the account the iterator is currently at. +func (it *diskAccountIterator) Hash() common.Hash { + return common.BytesToHash(it.it.Key()) // The prefix will be truncated +} + +// Account returns the RLP encoded slim account the iterator is currently at. +func (it *diskAccountIterator) Account() []byte { + return it.it.Value() +} + +// Release releases the database snapshot held during iteration. +func (it *diskAccountIterator) Release() { + // The iterator is auto-released on exhaustion, so make sure it's still alive + if it.it != nil { + it.it.Release() + it.it = nil + } +} + +// diffStorageIterator is a storage iterator that steps over the specific storage +// (both live and deleted) contained within a single diff layer. Higher order +// iterators will use the deleted slot to skip deeper iterators. +type diffStorageIterator struct { + // curHash is the current hash the iterator is positioned on. The field is + // explicitly tracked since the referenced diff layer might go stale after + // the iterator was positioned and we don't want to fail accessing the old + // hash as long as the iterator is not touched any more. + curHash common.Hash + account common.Hash + + layer *diffLayer // Live layer to retrieve values from + keys []common.Hash // Keys left in the layer to iterate + fail error // Any failures encountered (stale) +} + +// StorageIterator creates a storage iterator over a single diff layer. +// Except the storage iterator is returned, there is an additional flag +// "destructed" returned. If it's true then it means the whole storage is +// destructed in this layer(maybe recreated too), don't bother deeper layer +// for storage retrieval. +func (dl *diffLayer) StorageIterator(account common.Hash, seek common.Hash) (StorageIterator, bool) { + // Create the storage for this account even it's marked + // as destructed. The iterator is for the new one which + // just has the same address as the deleted one. + hashes, destructed := dl.StorageList(account) + index := sort.Search(len(hashes), func(i int) bool { + return bytes.Compare(seek[:], hashes[i][:]) <= 0 + }) + // Assemble and returned the already seeked iterator + return &diffStorageIterator{ + layer: dl, + account: account, + keys: hashes[index:], + }, destructed +} + +// Next steps the iterator forward one element, returning false if exhausted. +func (it *diffStorageIterator) Next() bool { + // If the iterator was already stale, consider it a programmer error. Although + // we could just return false here, triggering this path would probably mean + // somebody forgot to check for Error, so lets blow up instead of undefined + // behavior that's hard to debug. + if it.fail != nil { + panic(fmt.Sprintf("called Next of failed iterator: %v", it.fail)) + } + // Stop iterating if all keys were exhausted + if len(it.keys) == 0 { + return false + } + if it.layer.Stale() { + it.fail, it.keys = ErrSnapshotStale, nil + return false + } + // Iterator seems to be still alive, retrieve and cache the live hash + it.curHash = it.keys[0] + // key cached, shift the iterator and notify the user of success + it.keys = it.keys[1:] + return true +} + +// Error returns any failure that occurred during iteration, which might have +// caused a premature iteration exit (e.g. snapshot stack becoming stale). +func (it *diffStorageIterator) Error() error { + return it.fail +} + +// Hash returns the hash of the storage slot the iterator is currently at. +func (it *diffStorageIterator) Hash() common.Hash { + return it.curHash +} + +// Slot returns the raw storage slot value the iterator is currently at. +// This method may _fail_, if the underlying layer has been flattened between +// the call to Next and Value. That type of error will set it.Err. +// This method assumes that flattening does not delete elements from +// the storage mapping (writing nil into it is fine though), and will panic +// if elements have been deleted. +// +// Note the returned slot is not a copy, please don't modify it. +func (it *diffStorageIterator) Slot() []byte { + it.layer.lock.RLock() + storage, ok := it.layer.storageData[it.account] + if !ok { + panic(fmt.Sprintf("iterator referenced non-existent account storage: %x", it.account)) + } + // Storage slot might be nil(deleted), but it must exist + blob, ok := storage[it.curHash] + if !ok { + panic(fmt.Sprintf("iterator referenced non-existent storage slot: %x", it.curHash)) + } + it.layer.lock.RUnlock() + if it.layer.Stale() { + it.fail, it.keys = ErrSnapshotStale, nil + } + return blob +} + +// Release is a noop for diff account iterators as there are no held resources. +func (it *diffStorageIterator) Release() {} + +// diskStorageIterator is a storage iterator that steps over the live storage +// contained within a disk layer. +type diskStorageIterator struct { + layer *diskLayer + account common.Hash + it ethdb.Iterator +} + +// StorageIterator creates a storage iterator over a disk layer. +// If the whole storage is destructed, then all entries in the disk +// layer are deleted already. So the "destructed" flag returned here +// is always false. +func (dl *diskLayer) StorageIterator(account common.Hash, seek common.Hash) (StorageIterator, bool) { + pos := common.TrimRightZeroes(seek[:]) + return &diskStorageIterator{ + layer: dl, + account: account, + it: dl.diskdb.NewIterator(append(rawdb.SnapshotStoragePrefix, account.Bytes()...), pos), + }, false +} + +// Next steps the iterator forward one element, returning false if exhausted. +func (it *diskStorageIterator) Next() bool { + // If the iterator was already exhausted, don't bother + if it.it == nil { + return false + } + // Try to advance the iterator and release it if we reached the end + for { + if !it.it.Next() { + it.it.Release() + it.it = nil + return false + } + if len(it.it.Key()) == len(rawdb.SnapshotStoragePrefix)+common.HashLength+common.HashLength { + break + } + } + return true +} + +// Error returns any failure that occurred during iteration, which might have +// caused a premature iteration exit (e.g. snapshot stack becoming stale). +// +// A diff layer is immutable after creation content wise and can always be fully +// iterated without error, so this method always returns nil. +func (it *diskStorageIterator) Error() error { + if it.it == nil { + return nil // Iterator is exhausted and released + } + return it.it.Error() +} + +// Hash returns the hash of the storage slot the iterator is currently at. +func (it *diskStorageIterator) Hash() common.Hash { + return common.BytesToHash(it.it.Key()) // The prefix will be truncated +} + +// Slot returns the raw storage slot content the iterator is currently at. +func (it *diskStorageIterator) Slot() []byte { + return it.it.Value() +} + +// Release releases the database snapshot held during iteration. +func (it *diskStorageIterator) Release() { + // The iterator is auto-released on exhaustion, so make sure it's still alive + if it.it != nil { + it.it.Release() + it.it = nil + } +} diff --git a/core/state/snapshot/iterator_binary.go b/core/state/snapshot/iterator_binary.go new file mode 100644 index 0000000000..cff012402c --- /dev/null +++ b/core/state/snapshot/iterator_binary.go @@ -0,0 +1,223 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + + "github.com/ethereum/go-ethereum/common" +) + +// binaryIterator is a simplistic iterator to step over the accounts or storage +// in a snapshot, which may or may not be composed of multiple layers. Performance +// wise this iterator is slow, it's meant for cross validating the fast one, +type binaryIterator struct { + a Iterator + b Iterator + aDone bool + bDone bool + accountIterator bool + k common.Hash + account common.Hash + fail error +} + +// initBinaryAccountIterator creates a simplistic iterator to step over all the +// accounts in a slow, but easily verifiable way. Note this function is used for +// initialization, use `newBinaryAccountIterator` as the API. +func (dl *diffLayer) initBinaryAccountIterator() Iterator { + parent, ok := dl.parent.(*diffLayer) + if !ok { + l := &binaryIterator{ + a: dl.AccountIterator(common.Hash{}), + b: dl.Parent().AccountIterator(common.Hash{}), + accountIterator: true, + } + l.aDone = !l.a.Next() + l.bDone = !l.b.Next() + return l + } + l := &binaryIterator{ + a: dl.AccountIterator(common.Hash{}), + b: parent.initBinaryAccountIterator(), + accountIterator: true, + } + l.aDone = !l.a.Next() + l.bDone = !l.b.Next() + return l +} + +// initBinaryStorageIterator creates a simplistic iterator to step over all the +// storage slots in a slow, but easily verifiable way. Note this function is used +// for initialization, use `newBinaryStorageIterator` as the API. +func (dl *diffLayer) initBinaryStorageIterator(account common.Hash) Iterator { + parent, ok := dl.parent.(*diffLayer) + if !ok { + // If the storage in this layer is already destructed, discard all + // deeper layers but still return an valid single-branch iterator. + a, destructed := dl.StorageIterator(account, common.Hash{}) + if destructed { + l := &binaryIterator{ + a: a, + account: account, + } + l.aDone = !l.a.Next() + l.bDone = true + return l + } + // The parent is disk layer, don't need to take care "destructed" + // anymore. + b, _ := dl.Parent().StorageIterator(account, common.Hash{}) + l := &binaryIterator{ + a: a, + b: b, + account: account, + } + l.aDone = !l.a.Next() + l.bDone = !l.b.Next() + return l + } + // If the storage in this layer is already destructed, discard all + // deeper layers but still return an valid single-branch iterator. + a, destructed := dl.StorageIterator(account, common.Hash{}) + if destructed { + l := &binaryIterator{ + a: a, + account: account, + } + l.aDone = !l.a.Next() + l.bDone = true + return l + } + l := &binaryIterator{ + a: a, + b: parent.initBinaryStorageIterator(account), + account: account, + } + l.aDone = !l.a.Next() + l.bDone = !l.b.Next() + return l +} + +// Next steps the iterator forward one element, returning false if exhausted, +// or an error if iteration failed for some reason (e.g. root being iterated +// becomes stale and garbage collected). +func (it *binaryIterator) Next() bool { + if it.aDone && it.bDone { + return false + } +first: + if it.aDone { + it.k = it.b.Hash() + it.bDone = !it.b.Next() + return true + } + if it.bDone { + it.k = it.a.Hash() + it.aDone = !it.a.Next() + return true + } + nextA, nextB := it.a.Hash(), it.b.Hash() + if diff := bytes.Compare(nextA[:], nextB[:]); diff < 0 { + it.aDone = !it.a.Next() + it.k = nextA + return true + } else if diff == 0 { + // Now we need to advance one of them + it.aDone = !it.a.Next() + goto first + } + it.bDone = !it.b.Next() + it.k = nextB + return true +} + +// Error returns any failure that occurred during iteration, which might have +// caused a premature iteration exit (e.g. snapshot stack becoming stale). +func (it *binaryIterator) Error() error { + return it.fail +} + +// Hash returns the hash of the account the iterator is currently at. +func (it *binaryIterator) Hash() common.Hash { + return it.k +} + +// Account returns the RLP encoded slim account the iterator is currently at, or +// nil if the iterated snapshot stack became stale (you can check Error after +// to see if it failed or not). +// +// Note the returned account is not a copy, please don't modify it. +func (it *binaryIterator) Account() []byte { + if !it.accountIterator { + return nil + } + // The topmost iterator must be `diffAccountIterator` + blob, err := it.a.(*diffAccountIterator).layer.AccountRLP(it.k) + if err != nil { + it.fail = err + return nil + } + return blob +} + +// Slot returns the raw storage slot data the iterator is currently at, or +// nil if the iterated snapshot stack became stale (you can check Error after +// to see if it failed or not). +// +// Note the returned slot is not a copy, please don't modify it. +func (it *binaryIterator) Slot() []byte { + if it.accountIterator { + return nil + } + blob, err := it.a.(*diffStorageIterator).layer.Storage(it.account, it.k) + if err != nil { + it.fail = err + return nil + } + return blob +} + +// Release recursively releases all the iterators in the stack. +func (it *binaryIterator) Release() { + it.a.Release() + it.b.Release() +} + +// newBinaryAccountIterator creates a simplistic account iterator to step over +// all the accounts in a slow, but easily verifiable way. +func (dl *diffLayer) newBinaryAccountIterator() AccountIterator { + iter := dl.initBinaryAccountIterator() + return iter.(AccountIterator) +} + +// newBinaryStorageIterator creates a simplistic account iterator to step over +// all the storage slots in a slow, but easily verifiable way. +func (dl *diffLayer) newBinaryStorageIterator(account common.Hash) StorageIterator { + iter := dl.initBinaryStorageIterator(account) + return iter.(StorageIterator) +} diff --git a/core/state/snapshot/iterator_fast.go b/core/state/snapshot/iterator_fast.go new file mode 100644 index 0000000000..1011da355c --- /dev/null +++ b/core/state/snapshot/iterator_fast.go @@ -0,0 +1,359 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "fmt" + "sort" + + "github.com/ethereum/go-ethereum/common" +) + +// weightedIterator is a iterator with an assigned weight. It is used to prioritise +// which account or storage slot is the correct one if multiple iterators find the +// same one (modified in multiple consecutive blocks). +type weightedIterator struct { + it Iterator + priority int +} + +// weightedIterators is a set of iterators implementing the sort.Interface. +type weightedIterators []*weightedIterator + +// Len implements sort.Interface, returning the number of active iterators. +func (its weightedIterators) Len() int { return len(its) } + +// Less implements sort.Interface, returning which of two iterators in the stack +// is before the other. +func (its weightedIterators) Less(i, j int) bool { + // Order the iterators primarily by the account hashes + hashI := its[i].it.Hash() + hashJ := its[j].it.Hash() + + switch bytes.Compare(hashI[:], hashJ[:]) { + case -1: + return true + case 1: + return false + } + // Same account/storage-slot in multiple layers, split by priority + return its[i].priority < its[j].priority +} + +// Swap implements sort.Interface, swapping two entries in the iterator stack. +func (its weightedIterators) Swap(i, j int) { + its[i], its[j] = its[j], its[i] +} + +// fastIterator is a more optimized multi-layer iterator which maintains a +// direct mapping of all iterators leading down to the bottom layer. +type fastIterator struct { + tree *Tree // Snapshot tree to reinitialize stale sub-iterators with + root common.Hash // Root hash to reinitialize stale sub-iterators through + + curAccount []byte + curSlot []byte + + iterators weightedIterators + initiated bool + account bool + fail error +} + +// newFastIterator creates a new hierarchical account or storage iterator with one +// element per diff layer. The returned combo iterator can be used to walk over +// the entire snapshot diff stack simultaneously. +func newFastIterator(tree *Tree, root common.Hash, account common.Hash, seek common.Hash, accountIterator bool, holdsTreeLock bool) (*fastIterator, error) { + current := tree.getSnapshot(root, holdsTreeLock) + if current == nil { + return nil, fmt.Errorf("unknown snapshot: %x", root) + } + fi := &fastIterator{ + tree: tree, + root: root, + account: accountIterator, + } + for depth := 0; current != nil; depth++ { + if accountIterator { + fi.iterators = append(fi.iterators, &weightedIterator{ + it: current.AccountIterator(seek), + priority: depth, + }) + } else { + // If the whole storage is destructed in this layer, don't + // bother deeper layer anymore. But we should still keep + // the iterator for this layer, since the iterator can contain + // some valid slots which belongs to the re-created account. + it, destructed := current.StorageIterator(account, seek) + fi.iterators = append(fi.iterators, &weightedIterator{ + it: it, + priority: depth, + }) + if destructed { + break + } + } + current = current.Parent() + } + fi.init() + return fi, nil +} + +// init walks over all the iterators and resolves any clashes between them, after +// which it prepares the stack for step-by-step iteration. +func (fi *fastIterator) init() { + // Track which account hashes are iterators positioned on + var positioned = make(map[common.Hash]int) + + // Position all iterators and track how many remain live + for i := 0; i < len(fi.iterators); i++ { + // Retrieve the first element and if it clashes with a previous iterator, + // advance either the current one or the old one. Repeat until nothing is + // clashing any more. + it := fi.iterators[i] + for { + // If the iterator is exhausted, drop it off the end + if !it.it.Next() { + it.it.Release() + last := len(fi.iterators) - 1 + + fi.iterators[i] = fi.iterators[last] + fi.iterators[last] = nil + fi.iterators = fi.iterators[:last] + + i-- + break + } + // The iterator is still alive, check for collisions with previous ones + hash := it.it.Hash() + if other, exist := positioned[hash]; !exist { + positioned[hash] = i + break + } else { + // Iterators collide, one needs to be progressed, use priority to + // determine which. + // + // This whole else-block can be avoided, if we instead + // do an initial priority-sort of the iterators. If we do that, + // then we'll only wind up here if a lower-priority (preferred) iterator + // has the same value, and then we will always just continue. + // However, it costs an extra sort, so it's probably not better + if fi.iterators[other].priority < it.priority { + // The 'it' should be progressed + continue + } else { + // The 'other' should be progressed, swap them + it = fi.iterators[other] + fi.iterators[other], fi.iterators[i] = fi.iterators[i], fi.iterators[other] + continue + } + } + } + } + // Re-sort the entire list + sort.Sort(fi.iterators) + fi.initiated = false +} + +// Next steps the iterator forward one element, returning false if exhausted. +func (fi *fastIterator) Next() bool { + if len(fi.iterators) == 0 { + return false + } + if !fi.initiated { + // Don't forward first time -- we had to 'Next' once in order to + // do the sorting already + fi.initiated = true + if fi.account { + fi.curAccount = fi.iterators[0].it.(AccountIterator).Account() + } else { + fi.curSlot = fi.iterators[0].it.(StorageIterator).Slot() + } + if innerErr := fi.iterators[0].it.Error(); innerErr != nil { + fi.fail = innerErr + return false + } + if fi.curAccount != nil || fi.curSlot != nil { + return true + } + // Implicit else: we've hit a nil-account or nil-slot, and need to + // fall through to the loop below to land on something non-nil + } + // If an account or a slot is deleted in one of the layers, the key will + // still be there, but the actual value will be nil. However, the iterator + // should not export nil-values (but instead simply omit the key), so we + // need to loop here until we either + // - get a non-nil value, + // - hit an error, + // - or exhaust the iterator + for { + if !fi.next(0) { + return false // exhausted + } + if fi.account { + fi.curAccount = fi.iterators[0].it.(AccountIterator).Account() + } else { + fi.curSlot = fi.iterators[0].it.(StorageIterator).Slot() + } + if innerErr := fi.iterators[0].it.Error(); innerErr != nil { + fi.fail = innerErr + return false // error + } + if fi.curAccount != nil || fi.curSlot != nil { + break // non-nil value found + } + } + return true +} + +// next handles the next operation internally and should be invoked when we know +// that two elements in the list may have the same value. +// +// For example, if the iterated hashes become [2,3,5,5,8,9,10], then we should +// invoke next(3), which will call Next on elem 3 (the second '5') and will +// cascade along the list, applying the same operation if needed. +func (fi *fastIterator) next(idx int) bool { + // If this particular iterator got exhausted, remove it and return true (the + // next one is surely not exhausted yet, otherwise it would have been removed + // already). + if it := fi.iterators[idx].it; !it.Next() { + it.Release() + + fi.iterators = append(fi.iterators[:idx], fi.iterators[idx+1:]...) + return len(fi.iterators) > 0 + } + // If there's no one left to cascade into, return + if idx == len(fi.iterators)-1 { + return true + } + // We next-ed the iterator at 'idx', now we may have to re-sort that element + var ( + cur, next = fi.iterators[idx], fi.iterators[idx+1] + curHash, nextHash = cur.it.Hash(), next.it.Hash() + ) + if diff := bytes.Compare(curHash[:], nextHash[:]); diff < 0 { + // It is still in correct place + return true + } else if diff == 0 && cur.priority < next.priority { + // So still in correct place, but we need to iterate on the next + fi.next(idx + 1) + return true + } + // At this point, the iterator is in the wrong location, but the remaining + // list is sorted. Find out where to move the item. + clash := -1 + index := sort.Search(len(fi.iterators), func(n int) bool { + // The iterator always advances forward, so anything before the old slot + // is known to be behind us, so just skip them altogether. This actually + // is an important clause since the sort order got invalidated. + if n < idx { + return false + } + if n == len(fi.iterators)-1 { + // Can always place an elem last + return true + } + nextHash := fi.iterators[n+1].it.Hash() + if diff := bytes.Compare(curHash[:], nextHash[:]); diff < 0 { + return true + } else if diff > 0 { + return false + } + // The elem we're placing it next to has the same value, + // so whichever winds up on n+1 will need further iteraton + clash = n + 1 + + return cur.priority < fi.iterators[n+1].priority + }) + fi.move(idx, index) + if clash != -1 { + fi.next(clash) + } + return true +} + +// move advances an iterator to another position in the list. +func (fi *fastIterator) move(index, newpos int) { + elem := fi.iterators[index] + copy(fi.iterators[index:], fi.iterators[index+1:newpos+1]) + fi.iterators[newpos] = elem +} + +// Error returns any failure that occurred during iteration, which might have +// caused a premature iteration exit (e.g. snapshot stack becoming stale). +func (fi *fastIterator) Error() error { + return fi.fail +} + +// Hash returns the current key +func (fi *fastIterator) Hash() common.Hash { + return fi.iterators[0].it.Hash() +} + +// Account returns the current account blob. +// Note the returned account is not a copy, please don't modify it. +func (fi *fastIterator) Account() []byte { + return fi.curAccount +} + +// Slot returns the current storage slot. +// Note the returned slot is not a copy, please don't modify it. +func (fi *fastIterator) Slot() []byte { + return fi.curSlot +} + +// Release iterates over all the remaining live layer iterators and releases each +// of thme individually. +func (fi *fastIterator) Release() { + for _, it := range fi.iterators { + it.it.Release() + } + fi.iterators = nil +} + +// Debug is a convencience helper during testing +func (fi *fastIterator) Debug() { + for _, it := range fi.iterators { + fmt.Printf("[p=%v v=%v] ", it.priority, it.it.Hash()[0]) + } + fmt.Println() +} + +// newFastAccountIterator creates a new hierarchical account iterator with one +// element per diff layer. The returned combo iterator can be used to walk over +// the entire snapshot diff stack simultaneously. +func newFastAccountIterator(tree *Tree, root common.Hash, seek common.Hash, holdsTreeLock bool) (AccountIterator, error) { + return newFastIterator(tree, root, common.Hash{}, seek, true, holdsTreeLock) +} + +// newFastStorageIterator creates a new hierarchical storage iterator with one +// element per diff layer. The returned combo iterator can be used to walk over +// the entire snapshot diff stack simultaneously. +func newFastStorageIterator(tree *Tree, root common.Hash, account common.Hash, seek common.Hash, holdsTreeLock bool) (StorageIterator, error) { + return newFastIterator(tree, root, account, seek, false, holdsTreeLock) +} diff --git a/core/state/snapshot/iterator_test.go b/core/state/snapshot/iterator_test.go new file mode 100644 index 0000000000..608a0717b0 --- /dev/null +++ b/core/state/snapshot/iterator_test.go @@ -0,0 +1,987 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "encoding/binary" + "fmt" + "math/rand" + "testing" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ethereum/go-ethereum/common" +) + +// TestAccountIteratorBasics tests some simple single-layer(diff and disk) iteration +func TestAccountIteratorBasics(t *testing.T) { + var ( + destructs = make(map[common.Hash]struct{}) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + // Fill up a parent + for i := 0; i < 100; i++ { + h := randomHash() + data := randomAccount() + + accounts[h] = data + if rand.Intn(4) == 0 { + destructs[h] = struct{}{} + } + if rand.Intn(2) == 0 { + accStorage := make(map[common.Hash][]byte) + value := make([]byte, 32) + rand.Read(value) + accStorage[randomHash()] = value + storage[h] = accStorage + } + } + // Add some (identical) layers on top + diffLayer := newDiffLayer(emptyLayer(), common.Hash{}, common.Hash{}, copyDestructs(destructs), copyAccounts(accounts), copyStorage(storage)) + it := diffLayer.AccountIterator(common.Hash{}) + verifyIterator(t, 100, it, verifyNothing) // Nil is allowed for single layer iterator + + diskLayer, _, _ := diffToDisk(diffLayer) + it = diskLayer.AccountIterator(common.Hash{}) + verifyIterator(t, 100, it, verifyNothing) // Nil is allowed for single layer iterator +} + +// TestStorageIteratorBasics tests some simple single-layer(diff and disk) iteration for storage +func TestStorageIteratorBasics(t *testing.T) { + var ( + nilStorage = make(map[common.Hash]int) + accounts = make(map[common.Hash][]byte) + storage = make(map[common.Hash]map[common.Hash][]byte) + ) + // Fill some random data + for i := 0; i < 10; i++ { + h := randomHash() + accounts[h] = randomAccount() + + accStorage := make(map[common.Hash][]byte) + value := make([]byte, 32) + + var nilstorage int + for i := 0; i < 100; i++ { + rand.Read(value) + if rand.Intn(2) == 0 { + accStorage[randomHash()] = common.CopyBytes(value) + } else { + accStorage[randomHash()] = nil // delete slot + nilstorage += 1 + } + } + storage[h] = accStorage + nilStorage[h] = nilstorage + } + // Add some (identical) layers on top + diffLayer := newDiffLayer(emptyLayer(), common.Hash{}, common.Hash{}, nil, copyAccounts(accounts), copyStorage(storage)) + for account := range accounts { + it, _ := diffLayer.StorageIterator(account, common.Hash{}) + verifyIterator(t, 100, it, verifyNothing) // Nil is allowed for single layer iterator + } + + diskLayer, _, _ := diffToDisk(diffLayer) + for account := range accounts { + it, _ := diskLayer.StorageIterator(account, common.Hash{}) + verifyIterator(t, 100-nilStorage[account], it, verifyNothing) // Nil is allowed for single layer iterator + } +} + +type testIterator struct { + values []byte +} + +func newTestIterator(values ...byte) *testIterator { + return &testIterator{values} +} + +func (ti *testIterator) Seek(common.Hash) { + panic("implement me") +} + +func (ti *testIterator) Next() bool { + ti.values = ti.values[1:] + return len(ti.values) > 0 +} + +func (ti *testIterator) Error() error { + return nil +} + +func (ti *testIterator) Hash() common.Hash { + return common.BytesToHash([]byte{ti.values[0]}) +} + +func (ti *testIterator) Account() []byte { + return nil +} + +func (ti *testIterator) Slot() []byte { + return nil +} + +func (ti *testIterator) Release() {} + +func TestFastIteratorBasics(t *testing.T) { + type testCase struct { + lists [][]byte + expKeys []byte + } + for i, tc := range []testCase{ + { + lists: [][]byte{ + {0, 1, 8}, + {1, 2, 8}, + {2, 9}, + {4}, + {7, 14, 15}, + {9, 13, 15, 16}, + }, + expKeys: []byte{0, 1, 2, 4, 7, 8, 9, 13, 14, 15, 16}, + }, + { + lists: [][]byte{ + {0, 8}, + {1, 2, 8}, + {7, 14, 15}, + {8, 9}, + {9, 10}, + {10, 13, 15, 16}, + }, + expKeys: []byte{0, 1, 2, 7, 8, 9, 10, 13, 14, 15, 16}, + }, + } { + var iterators []*weightedIterator + for i, data := range tc.lists { + it := newTestIterator(data...) + iterators = append(iterators, &weightedIterator{it, i}) + } + fi := &fastIterator{ + iterators: iterators, + initiated: false, + } + count := 0 + for fi.Next() { + if got, exp := fi.Hash()[31], tc.expKeys[count]; exp != got { + t.Errorf("tc %d, [%d]: got %d exp %d", i, count, got, exp) + } + count++ + } + } +} + +type verifyContent int + +const ( + verifyNothing verifyContent = iota + verifyAccount + verifyStorage +) + +func verifyIterator(t *testing.T, expCount int, it Iterator, verify verifyContent) { + t.Helper() + + var ( + count = 0 + last = common.Hash{} + ) + for it.Next() { + hash := it.Hash() + if bytes.Compare(last[:], hash[:]) >= 0 { + t.Errorf("wrong order: %x >= %x", last, hash) + } + count++ + if verify == verifyAccount && len(it.(AccountIterator).Account()) == 0 { + t.Errorf("iterator returned nil-value for hash %x", hash) + } else if verify == verifyStorage && len(it.(StorageIterator).Slot()) == 0 { + t.Errorf("iterator returned nil-value for hash %x", hash) + } + last = hash + } + if count != expCount { + t.Errorf("iterator count mismatch: have %d, want %d", count, expCount) + } + if err := it.Error(); err != nil { + t.Errorf("iterator failed: %v", err) + } +} + +// TestAccountIteratorTraversal tests some simple multi-layer iteration. +func TestAccountIteratorTraversal(t *testing.T) { + // Create a snapshot tree with a single empty disk layer with the specified root and block hash + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Stack three diff layers on top with various overlaps + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, + randomAccountSet("0xaa", "0xee", "0xff", "0xf0"), nil) + + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, + randomAccountSet("0xbb", "0xdd", "0xf0"), nil) + + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), nil, + randomAccountSet("0xcc", "0xf0", "0xff"), nil) + + // Verify the single and multi-layer iterators + head := snaps.Snapshot(common.HexToHash("0xff04")) + + verifyIterator(t, 3, head.(snapshot).AccountIterator(common.Hash{}), verifyNothing) + verifyIterator(t, 7, head.(*diffLayer).newBinaryAccountIterator(), verifyAccount) + + it, _ := snaps.AccountIterator(common.HexToHash("0xff04"), common.Hash{}, false) + verifyIterator(t, 7, it, verifyAccount) + it.Release() + + // Test after persist some bottom-most layers into the disk, + // the functionalities still work. + limit := aggregatorMemoryLimit + defer func() { + aggregatorMemoryLimit = limit + }() + aggregatorMemoryLimit = 0 // Force pushing the bottom-most layer into disk + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(common.HexToHash("0x02")); err != nil { + t.Fatal(err) + } + verifyIterator(t, 7, head.(*diffLayer).newBinaryAccountIterator(), verifyAccount) + + it, _ = snaps.AccountIterator(common.HexToHash("0xff04"), common.Hash{}, false) + verifyIterator(t, 7, it, verifyAccount) + it.Release() +} + +func TestStorageIteratorTraversal(t *testing.T) { + // Create an empty base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Stack three diff layers on top with various overlaps + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), + nil, randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x01", "0x02", "0x03"}}, nil)) + + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), + nil, randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x04", "0x05", "0x06"}}, nil)) + + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), + nil, randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x01", "0x02", "0x03"}}, nil)) + + // Verify the single and multi-layer iterators + head := snaps.Snapshot(common.HexToHash("0xff04")) + + diffIter, _ := head.(snapshot).StorageIterator(common.HexToHash("0xaa"), common.Hash{}) + verifyIterator(t, 3, diffIter, verifyNothing) + verifyIterator(t, 6, head.(*diffLayer).newBinaryStorageIterator(common.HexToHash("0xaa")), verifyStorage) + + it, _ := snaps.StorageIterator(common.HexToHash("0xff04"), common.HexToHash("0xaa"), common.Hash{}, false) + verifyIterator(t, 6, it, verifyStorage) + it.Release() + + // Test after persist some bottom-most layers into the disk, + // the functionalities still work. + limit := aggregatorMemoryLimit + defer func() { + aggregatorMemoryLimit = limit + }() + aggregatorMemoryLimit = 0 // Force pushing the bottom-most layer into disk + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(common.HexToHash("0x02")); err != nil { + t.Fatal(err) + } + verifyIterator(t, 6, head.(*diffLayer).newBinaryStorageIterator(common.HexToHash("0xaa")), verifyStorage) + + it, _ = snaps.StorageIterator(common.HexToHash("0xff04"), common.HexToHash("0xaa"), common.Hash{}, false) + verifyIterator(t, 6, it, verifyStorage) + it.Release() +} + +// TestAccountIteratorTraversalValues tests some multi-layer iteration, where we +// also expect the correct values to show up. +func TestAccountIteratorTraversalValues(t *testing.T) { + // Create a snapshot tree with an empty base layer + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Create a batch of account sets to seed subsequent layers with + var ( + a = make(map[common.Hash][]byte) + b = make(map[common.Hash][]byte) + c = make(map[common.Hash][]byte) + d = make(map[common.Hash][]byte) + e = make(map[common.Hash][]byte) + f = make(map[common.Hash][]byte) + g = make(map[common.Hash][]byte) + h = make(map[common.Hash][]byte) + ) + for i := byte(2); i < 0xff; i++ { + a[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 0, i)) + if i > 20 && i%2 == 0 { + b[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 1, i)) + } + if i%4 == 0 { + c[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 2, i)) + } + if i%7 == 0 { + d[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 3, i)) + } + if i%8 == 0 { + e[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 4, i)) + } + if i > 50 || i < 85 { + f[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 5, i)) + } + if i%64 == 0 { + g[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 6, i)) + } + if i%128 == 0 { + h[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 7, i)) + } + } + // Assemble a stack of snapshots from the account layers + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, a, nil) + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, b, nil) + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), nil, c, nil) + snaps.Update(common.HexToHash("0x05"), common.HexToHash("0xff05"), common.HexToHash("0x04"), nil, d, nil) + snaps.Update(common.HexToHash("0x06"), common.HexToHash("0xff06"), common.HexToHash("0x05"), nil, e, nil) + snaps.Update(common.HexToHash("0x07"), common.HexToHash("0xff07"), common.HexToHash("0x06"), nil, f, nil) + snaps.Update(common.HexToHash("0x08"), common.HexToHash("0xff08"), common.HexToHash("0x07"), nil, g, nil) + snaps.Update(common.HexToHash("0x09"), common.HexToHash("0xff09"), common.HexToHash("0x08"), nil, h, nil) + + it, _ := snaps.AccountIterator(common.HexToHash("0xff09"), common.Hash{}, false) + head := snaps.Snapshot(common.HexToHash("0xff09")) + for it.Next() { + hash := it.Hash() + want, err := head.AccountRLP(hash) + if err != nil { + t.Fatalf("failed to retrieve expected account: %v", err) + } + if have := it.Account(); !bytes.Equal(want, have) { + t.Fatalf("hash %x: account mismatch: have %x, want %x", hash, have, want) + } + } + it.Release() + + // Test after persist some bottom-most layers into the disk, + // the functionalities still work. + limit := aggregatorMemoryLimit + defer func() { + aggregatorMemoryLimit = limit + }() + aggregatorMemoryLimit = 0 // Force pushing the bottom-most layer into disk + snaps.verified = true // Bypass validation of junk data + for i := 2; i < 7; i++ { + if err := snaps.Flatten(common.HexToHash(fmt.Sprintf("0x0%d", i))); err != nil { + t.Fatal(err) + } + } + + it, _ = snaps.AccountIterator(common.HexToHash("0xff09"), common.Hash{}, false) + for it.Next() { + hash := it.Hash() + want, err := head.AccountRLP(hash) + if err != nil { + t.Fatalf("failed to retrieve expected account: %v", err) + } + if have := it.Account(); !bytes.Equal(want, have) { + t.Fatalf("hash %x: account mismatch: have %x, want %x", hash, have, want) + } + } + it.Release() +} + +func TestStorageIteratorTraversalValues(t *testing.T) { + // Create a snapshot tree with a single disk layer + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + wrapStorage := func(storage map[common.Hash][]byte) map[common.Hash]map[common.Hash][]byte { + return map[common.Hash]map[common.Hash][]byte{ + common.HexToHash("0xaa"): storage, + } + } + // Create a batch of storage sets to seed subsequent layers with + var ( + a = make(map[common.Hash][]byte) + b = make(map[common.Hash][]byte) + c = make(map[common.Hash][]byte) + d = make(map[common.Hash][]byte) + e = make(map[common.Hash][]byte) + f = make(map[common.Hash][]byte) + g = make(map[common.Hash][]byte) + h = make(map[common.Hash][]byte) + ) + for i := byte(2); i < 0xff; i++ { + a[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 0, i)) + if i > 20 && i%2 == 0 { + b[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 1, i)) + } + if i%4 == 0 { + c[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 2, i)) + } + if i%7 == 0 { + d[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 3, i)) + } + if i%8 == 0 { + e[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 4, i)) + } + if i > 50 || i < 85 { + f[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 5, i)) + } + if i%64 == 0 { + g[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 6, i)) + } + if i%128 == 0 { + h[common.Hash{i}] = []byte(fmt.Sprintf("layer-%d, key %d", 7, i)) + } + } + // Assemble a stack of snapshots from the account layers + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, randomAccountSet("0xaa"), wrapStorage(a)) + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, randomAccountSet("0xaa"), wrapStorage(b)) + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), nil, randomAccountSet("0xaa"), wrapStorage(c)) + snaps.Update(common.HexToHash("0x05"), common.HexToHash("0xff05"), common.HexToHash("0x04"), nil, randomAccountSet("0xaa"), wrapStorage(d)) + snaps.Update(common.HexToHash("0x06"), common.HexToHash("0xff06"), common.HexToHash("0x05"), nil, randomAccountSet("0xaa"), wrapStorage(e)) + snaps.Update(common.HexToHash("0x07"), common.HexToHash("0xff07"), common.HexToHash("0x06"), nil, randomAccountSet("0xaa"), wrapStorage(e)) + snaps.Update(common.HexToHash("0x08"), common.HexToHash("0xff08"), common.HexToHash("0x07"), nil, randomAccountSet("0xaa"), wrapStorage(g)) + snaps.Update(common.HexToHash("0x09"), common.HexToHash("0xff09"), common.HexToHash("0x08"), nil, randomAccountSet("0xaa"), wrapStorage(h)) + + it, _ := snaps.StorageIterator(common.HexToHash("0xff09"), common.HexToHash("0xaa"), common.Hash{}, false) + head := snaps.Snapshot(common.HexToHash("0xff09")) + for it.Next() { + hash := it.Hash() + want, err := head.Storage(common.HexToHash("0xaa"), hash) + if err != nil { + t.Fatalf("failed to retrieve expected storage slot: %v", err) + } + if have := it.Slot(); !bytes.Equal(want, have) { + t.Fatalf("hash %x: slot mismatch: have %x, want %x", hash, have, want) + } + } + it.Release() + + // Test after persist some bottom-most layers into the disk, + // the functionalities still work. + limit := aggregatorMemoryLimit + defer func() { + aggregatorMemoryLimit = limit + }() + aggregatorMemoryLimit = 0 // Force pushing the bottom-most layer into disk + snaps.verified = true // Bypass validation of junk data + for i := 2; i < 7; i++ { + if err := snaps.Flatten(common.HexToHash(fmt.Sprintf("0x0%d", i))); err != nil { + t.Fatal(err) + } + } + + it, _ = snaps.StorageIterator(common.HexToHash("0xff09"), common.HexToHash("0xaa"), common.Hash{}, false) + for it.Next() { + hash := it.Hash() + want, err := head.Storage(common.HexToHash("0xaa"), hash) + if err != nil { + t.Fatalf("failed to retrieve expected slot: %v", err) + } + if have := it.Slot(); !bytes.Equal(want, have) { + t.Fatalf("hash %x: slot mismatch: have %x, want %x", hash, have, want) + } + } + it.Release() +} + +// This testcase is notorious, all layers contain the exact same 200 accounts. +func TestAccountIteratorLargeTraversal(t *testing.T) { + // Create a custom account factory to recreate the same addresses + makeAccounts := func(num int) map[common.Hash][]byte { + accounts := make(map[common.Hash][]byte) + for i := 0; i < num; i++ { + h := common.Hash{} + binary.BigEndian.PutUint64(h[:], uint64(i+1)) + accounts[h] = randomAccount() + } + return accounts + } + // Build up a large stack of snapshots + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + for i := 1; i < 128; i++ { + snaps.Update(common.HexToHash(fmt.Sprintf("0x%02x", i+1)), common.HexToHash(fmt.Sprintf("0xff%02x", i+1)), common.HexToHash(fmt.Sprintf("0x%02x", i)), nil, makeAccounts(200), nil) + } + // Iterate the entire stack and ensure everything is hit only once + head := snaps.Snapshot(common.HexToHash("0xff80")) + verifyIterator(t, 200, head.(snapshot).AccountIterator(common.Hash{}), verifyNothing) + verifyIterator(t, 200, head.(*diffLayer).newBinaryAccountIterator(), verifyAccount) + + it, _ := snaps.AccountIterator(common.HexToHash("0xff80"), common.Hash{}, false) + verifyIterator(t, 200, it, verifyAccount) + it.Release() + + // Test after persist some bottom-most layers into the disk, + // the functionalities still work. + limit := aggregatorMemoryLimit + defer func() { + aggregatorMemoryLimit = limit + }() + aggregatorMemoryLimit = 0 // Force pushing the bottom-most layer into disk + + snaps.verified = true // Bypass validation of junk data + for i := 2; i < 127; i++ { + if err := snaps.Flatten(common.HexToHash(fmt.Sprintf("0x%02x", i))); err != nil { + t.Fatal(err) + } + } + verifyIterator(t, 200, head.(*diffLayer).newBinaryAccountIterator(), verifyAccount) + + it, _ = snaps.AccountIterator(common.HexToHash("0xff80"), common.Hash{}, false) + verifyIterator(t, 200, it, verifyAccount) + it.Release() +} + +// TestAccountIteratorFlattening tests what happens when we +// - have a live iterator on child C (parent C1 -> C2 .. CN) +// - flattens C2 all the way into CN +// - continues iterating +func TestAccountIteratorFlattening(t *testing.T) { + // Create an empty base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Create a stack of diffs on top + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, + randomAccountSet("0xaa", "0xee", "0xff", "0xf0"), nil) + + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, + randomAccountSet("0xbb", "0xdd", "0xf0"), nil) + + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), nil, + randomAccountSet("0xcc", "0xf0", "0xff"), nil) + + // Create an iterator and flatten the data from underneath it + it, _ := snaps.AccountIterator(common.HexToHash("0xff04"), common.Hash{}, false) + defer it.Release() + + snaps.verified = true // Bypass validation of junk data + for i := 2; i < 4; i++ { + if err := snaps.Flatten(common.HexToHash(fmt.Sprintf("0x%02x", i))); err != nil { + t.Errorf("failed to flatten: %v", err) + } + } + // verifyIterator(t, 7, it) +} + +func TestAccountIteratorSeek(t *testing.T) { + // Create a snapshot stack with some initial data + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, + randomAccountSet("0xaa", "0xee", "0xff", "0xf0"), nil) + + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, + randomAccountSet("0xbb", "0xdd", "0xf0"), nil) + + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), nil, + randomAccountSet("0xcc", "0xf0", "0xff"), nil) + + // Account set is now + // 02: aa, ee, f0, ff + // 03: aa, bb, dd, ee, f0 (, f0), ff + // 04: aa, bb, cc, dd, ee, f0 (, f0), ff (, ff) + // Construct various iterators and ensure their traversal is correct + it, _ := snaps.AccountIterator(common.HexToHash("0xff02"), common.HexToHash("0xdd"), false) + defer it.Release() + verifyIterator(t, 3, it, verifyAccount) // expected: ee, f0, ff + + it, _ = snaps.AccountIterator(common.HexToHash("0xff02"), common.HexToHash("0xaa"), false) + defer it.Release() + verifyIterator(t, 4, it, verifyAccount) // expected: aa, ee, f0, ff + + it, _ = snaps.AccountIterator(common.HexToHash("0xff02"), common.HexToHash("0xff"), false) + defer it.Release() + verifyIterator(t, 1, it, verifyAccount) // expected: ff + + it, _ = snaps.AccountIterator(common.HexToHash("0xff02"), common.HexToHash("0xff1"), false) + defer it.Release() + verifyIterator(t, 0, it, verifyAccount) // expected: nothing + + it, _ = snaps.AccountIterator(common.HexToHash("0xff04"), common.HexToHash("0xbb"), false) + defer it.Release() + verifyIterator(t, 6, it, verifyAccount) // expected: bb, cc, dd, ee, f0, ff + + it, _ = snaps.AccountIterator(common.HexToHash("0xff04"), common.HexToHash("0xef"), false) + defer it.Release() + verifyIterator(t, 2, it, verifyAccount) // expected: f0, ff + + it, _ = snaps.AccountIterator(common.HexToHash("0xff04"), common.HexToHash("0xf0"), false) + defer it.Release() + verifyIterator(t, 2, it, verifyAccount) // expected: f0, ff + + it, _ = snaps.AccountIterator(common.HexToHash("0xff04"), common.HexToHash("0xff"), false) + defer it.Release() + verifyIterator(t, 1, it, verifyAccount) // expected: ff + + it, _ = snaps.AccountIterator(common.HexToHash("0xff04"), common.HexToHash("0xff1"), false) + defer it.Release() + verifyIterator(t, 0, it, verifyAccount) // expected: nothing +} + +func TestStorageIteratorSeek(t *testing.T) { + // Create a snapshot stack with some initial data + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Stack three diff layers on top with various overlaps + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, + randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x01", "0x03", "0x05"}}, nil)) + + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, + randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x02", "0x05", "0x06"}}, nil)) + + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), nil, + randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x01", "0x05", "0x08"}}, nil)) + + // Account set is now + // 02: 01, 03, 05 + // 03: 01, 02, 03, 05 (, 05), 06 + // 04: 01(, 01), 02, 03, 05(, 05, 05), 06, 08 + // Construct various iterators and ensure their traversal is correct + it, _ := snaps.StorageIterator(common.HexToHash("0xff02"), common.HexToHash("0xaa"), common.HexToHash("0x01"), false) + defer it.Release() + verifyIterator(t, 3, it, verifyStorage) // expected: 01, 03, 05 + + it, _ = snaps.StorageIterator(common.HexToHash("0xff02"), common.HexToHash("0xaa"), common.HexToHash("0x02"), false) + defer it.Release() + verifyIterator(t, 2, it, verifyStorage) // expected: 03, 05 + + it, _ = snaps.StorageIterator(common.HexToHash("0xff02"), common.HexToHash("0xaa"), common.HexToHash("0x5"), false) + defer it.Release() + verifyIterator(t, 1, it, verifyStorage) // expected: 05 + + it, _ = snaps.StorageIterator(common.HexToHash("0xff02"), common.HexToHash("0xaa"), common.HexToHash("0x6"), false) + defer it.Release() + verifyIterator(t, 0, it, verifyStorage) // expected: nothing + + it, _ = snaps.StorageIterator(common.HexToHash("0xff04"), common.HexToHash("0xaa"), common.HexToHash("0x01"), false) + defer it.Release() + verifyIterator(t, 6, it, verifyStorage) // expected: 01, 02, 03, 05, 06, 08 + + it, _ = snaps.StorageIterator(common.HexToHash("0xff04"), common.HexToHash("0xaa"), common.HexToHash("0x05"), false) + defer it.Release() + verifyIterator(t, 3, it, verifyStorage) // expected: 05, 06, 08 + + it, _ = snaps.StorageIterator(common.HexToHash("0xff04"), common.HexToHash("0xaa"), common.HexToHash("0x08"), false) + defer it.Release() + verifyIterator(t, 1, it, verifyStorage) // expected: 08 + + it, _ = snaps.StorageIterator(common.HexToHash("0xff04"), common.HexToHash("0xaa"), common.HexToHash("0x09"), false) + defer it.Release() + verifyIterator(t, 0, it, verifyStorage) // expected: nothing +} + +// TestAccountIteratorDeletions tests that the iterator behaves correct when there are +// deleted accounts (where the Account() value is nil). The iterator +// should not output any accounts or nil-values for those cases. +func TestAccountIteratorDeletions(t *testing.T) { + // Create an empty base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Stack three diff layers on top with various overlaps + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), + nil, randomAccountSet("0x11", "0x22", "0x33"), nil) + + deleted := common.HexToHash("0x22") + destructed := map[common.Hash]struct{}{ + deleted: {}, + } + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), + destructed, randomAccountSet("0x11", "0x33"), nil) + + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), + nil, randomAccountSet("0x33", "0x44", "0x55"), nil) + + // The output should be 11,33,44,55 + it, _ := snaps.AccountIterator(common.HexToHash("0xff04"), common.Hash{}, false) + // Do a quick check + verifyIterator(t, 4, it, verifyAccount) + it.Release() + + // And a more detailed verification that we indeed do not see '0x22' + it, _ = snaps.AccountIterator(common.HexToHash("0xff04"), common.Hash{}, false) + defer it.Release() + for it.Next() { + hash := it.Hash() + if it.Account() == nil { + t.Errorf("iterator returned nil-value for hash %x", hash) + } + if hash == deleted { + t.Errorf("expected deleted elem %x to not be returned by iterator", deleted) + } + } +} + +func TestStorageIteratorDeletions(t *testing.T) { + // Create an empty base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Stack three diff layers on top with various overlaps + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, + randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x01", "0x03", "0x05"}}, nil)) + + snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, + randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x02", "0x04", "0x06"}}, [][]string{{"0x01", "0x03"}})) + + // The output should be 02,04,05,06 + it, _ := snaps.StorageIterator(common.HexToHash("0xff03"), common.HexToHash("0xaa"), common.Hash{}, false) + verifyIterator(t, 4, it, verifyStorage) + it.Release() + + // The output should be 04,05,06 + it, _ = snaps.StorageIterator(common.HexToHash("0xff03"), common.HexToHash("0xaa"), common.HexToHash("0x03"), false) + verifyIterator(t, 3, it, verifyStorage) + it.Release() + + // Destruct the whole storage + destructed := map[common.Hash]struct{}{ + common.HexToHash("0xaa"): {}, + } + snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), destructed, nil, nil) + + it, _ = snaps.StorageIterator(common.HexToHash("0xff04"), common.HexToHash("0xaa"), common.Hash{}, false) + verifyIterator(t, 0, it, verifyStorage) + it.Release() + + // Re-insert the slots of the same account + snaps.Update(common.HexToHash("0x05"), common.HexToHash("0xff05"), common.HexToHash("0x04"), nil, + randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x07", "0x08", "0x09"}}, nil)) + + // The output should be 07,08,09 + it, _ = snaps.StorageIterator(common.HexToHash("0xff05"), common.HexToHash("0xaa"), common.Hash{}, false) + verifyIterator(t, 3, it, verifyStorage) + it.Release() + + // Destruct the whole storage but re-create the account in the same layer + snaps.Update(common.HexToHash("0x06"), common.HexToHash("0xff06"), common.HexToHash("0x05"), destructed, randomAccountSet("0xaa"), randomStorageSet([]string{"0xaa"}, [][]string{{"0x11", "0x12"}}, nil)) + it, _ = snaps.StorageIterator(common.HexToHash("0xff06"), common.HexToHash("0xaa"), common.Hash{}, false) + verifyIterator(t, 2, it, verifyStorage) // The output should be 11,12 + it.Release() + + verifyIterator(t, 2, snaps.Snapshot(common.HexToHash("0xff06")).(*diffLayer).newBinaryStorageIterator(common.HexToHash("0xaa")), verifyStorage) +} + +// BenchmarkAccountIteratorTraversal is a bit a bit notorious -- all layers contain the +// exact same 200 accounts. That means that we need to process 2000 items, but +// only spit out 200 values eventually. +// +// The value-fetching benchmark is easy on the binary iterator, since it never has to reach +// down at any depth for retrieving the values -- all are on the toppmost layer +// +// BenchmarkAccountIteratorTraversal/binary_iterator_keys-6 2239 483674 ns/op +// BenchmarkAccountIteratorTraversal/binary_iterator_values-6 2403 501810 ns/op +// BenchmarkAccountIteratorTraversal/fast_iterator_keys-6 1923 677966 ns/op +// BenchmarkAccountIteratorTraversal/fast_iterator_values-6 1741 649967 ns/op +func BenchmarkAccountIteratorTraversal(b *testing.B) { + // Create a custom account factory to recreate the same addresses + makeAccounts := func(num int) map[common.Hash][]byte { + accounts := make(map[common.Hash][]byte) + for i := 0; i < num; i++ { + h := common.Hash{} + binary.BigEndian.PutUint64(h[:], uint64(i+1)) + accounts[h] = randomAccount() + } + return accounts + } + // Build up a large stack of snapshots + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + for i := 1; i <= 100; i++ { + snaps.Update(common.HexToHash(fmt.Sprintf("0x%02x", i+1)), common.HexToHash(fmt.Sprintf("0xff%02x", i+1)), common.HexToHash(fmt.Sprintf("0x%02x", i)), nil, makeAccounts(200), nil) + } + // We call this once before the benchmark, so the creation of + // sorted accountlists are not included in the results. + head := snaps.Snapshot(common.HexToHash("0xff65")) + head.(*diffLayer).newBinaryAccountIterator() + + b.Run("binary iterator keys", func(b *testing.B) { + for i := 0; i < b.N; i++ { + got := 0 + it := head.(*diffLayer).newBinaryAccountIterator() + for it.Next() { + got++ + } + if exp := 200; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) + b.Run("binary iterator values", func(b *testing.B) { + for i := 0; i < b.N; i++ { + got := 0 + it := head.(*diffLayer).newBinaryAccountIterator() + for it.Next() { + got++ + head.(*diffLayer).accountRLP(it.Hash(), 0) + } + if exp := 200; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) + b.Run("fast iterator keys", func(b *testing.B) { + for i := 0; i < b.N; i++ { + it, _ := snaps.AccountIterator(common.HexToHash("0xff65"), common.Hash{}, false) + defer it.Release() + + got := 0 + for it.Next() { + got++ + } + if exp := 200; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) + b.Run("fast iterator values", func(b *testing.B) { + for i := 0; i < b.N; i++ { + it, _ := snaps.AccountIterator(common.HexToHash("0xff65"), common.Hash{}, false) + defer it.Release() + + got := 0 + for it.Next() { + got++ + it.Account() + } + if exp := 200; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) +} + +// BenchmarkAccountIteratorLargeBaselayer is a pretty realistic benchmark, where +// the baselayer is a lot larger than the upper layer. +// +// This is heavy on the binary iterator, which in most cases will have to +// call recursively 100 times for the majority of the values +// +// BenchmarkAccountIteratorLargeBaselayer/binary_iterator_(keys)-6 514 1971999 ns/op +// BenchmarkAccountIteratorLargeBaselayer/binary_iterator_(values)-6 61 18997492 ns/op +// BenchmarkAccountIteratorLargeBaselayer/fast_iterator_(keys)-6 10000 114385 ns/op +// BenchmarkAccountIteratorLargeBaselayer/fast_iterator_(values)-6 4047 296823 ns/op +func BenchmarkAccountIteratorLargeBaselayer(b *testing.B) { + // Create a custom account factory to recreate the same addresses + makeAccounts := func(num int) map[common.Hash][]byte { + accounts := make(map[common.Hash][]byte) + for i := 0; i < num; i++ { + h := common.Hash{} + binary.BigEndian.PutUint64(h[:], uint64(i+1)) + accounts[h] = randomAccount() + } + return accounts + } + // Build up a large stack of snapshots + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, makeAccounts(2000), nil) + for i := 2; i <= 100; i++ { + snaps.Update(common.HexToHash(fmt.Sprintf("0x%02x", i+1)), common.HexToHash(fmt.Sprintf("0xff%02x", i+1)), common.HexToHash(fmt.Sprintf("0x%02x", i)), nil, makeAccounts(20), nil) + } + // We call this once before the benchmark, so the creation of + // sorted accountlists are not included in the results. + head := snaps.Snapshot(common.HexToHash("0xff65")) + head.(*diffLayer).newBinaryAccountIterator() + + b.Run("binary iterator (keys)", func(b *testing.B) { + for i := 0; i < b.N; i++ { + got := 0 + it := head.(*diffLayer).newBinaryAccountIterator() + for it.Next() { + got++ + } + if exp := 2000; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) + b.Run("binary iterator (values)", func(b *testing.B) { + for i := 0; i < b.N; i++ { + got := 0 + it := head.(*diffLayer).newBinaryAccountIterator() + for it.Next() { + got++ + v := it.Hash() + head.(*diffLayer).accountRLP(v, 0) + } + if exp := 2000; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) + b.Run("fast iterator (keys)", func(b *testing.B) { + for i := 0; i < b.N; i++ { + it, _ := snaps.AccountIterator(common.HexToHash("0xff65"), common.Hash{}, false) + defer it.Release() + + got := 0 + for it.Next() { + got++ + } + if exp := 2000; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) + b.Run("fast iterator (values)", func(b *testing.B) { + for i := 0; i < b.N; i++ { + it, _ := snaps.AccountIterator(common.HexToHash("0xff65"), common.Hash{}, false) + defer it.Release() + + got := 0 + for it.Next() { + it.Account() + got++ + } + if exp := 2000; got != exp { + b.Errorf("iterator len wrong, expected %d, got %d", exp, got) + } + } + }) +} + +/* +func BenchmarkBinaryAccountIteration(b *testing.B) { + benchmarkAccountIteration(b, func(snap snapshot) AccountIterator { + return snap.(*diffLayer).newBinaryAccountIterator() + }) +} + +func BenchmarkFastAccountIteration(b *testing.B) { + benchmarkAccountIteration(b, newFastAccountIterator) +} + +func benchmarkAccountIteration(b *testing.B, iterator func(snap snapshot) AccountIterator) { + // Create a diff stack and randomize the accounts across them + layers := make([]map[common.Hash][]byte, 128) + for i := 0; i < len(layers); i++ { + layers[i] = make(map[common.Hash][]byte) + } + for i := 0; i < b.N; i++ { + depth := rand.Intn(len(layers)) + layers[depth][randomHash()] = randomAccount() + } + stack := snapshot(emptyLayer()) + for _, layer := range layers { + stack = stack.Update(common.Hash{}, layer, nil, nil) + } + // Reset the timers and report all the stats + it := iterator(stack) + + b.ResetTimer() + b.ReportAllocs() + + for it.Next() { + } +} +*/ diff --git a/core/state/snapshot/journal.go b/core/state/snapshot/journal.go new file mode 100644 index 0000000000..1a8e1ed728 --- /dev/null +++ b/core/state/snapshot/journal.go @@ -0,0 +1,133 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "encoding/binary" + "errors" + "fmt" + "time" + + "github.com/VictoriaMetrics/fastcache" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// journalGenerator is a disk layer entry containing the generator progress marker. +type journalGenerator struct { + // Indicator that whether the database was in progress of being wiped. + // It's deprecated but keep it here for background compatibility. + Wiping bool + + Done bool // Whether the generator finished creating the snapshot + Marker []byte + Accounts uint64 + Slots uint64 + Storage uint64 +} + +// loadSnapshot loads a pre-existing state snapshot backed by a key-value +// store. If loading the snapshot from disk is successful, this function also +// returns a boolean indicating whether or not the snapshot is fully generated. +func loadSnapshot(diskdb ethdb.KeyValueStore, triedb *trie.Database, cache int, blockHash, root common.Hash) (snapshot, bool, error) { + // Retrieve the block number and hash of the snapshot, failing if no snapshot + // is present in the database (or crashed mid-update). + baseBlockHash := rawdb.ReadSnapshotBlockHash(diskdb) + if baseBlockHash == (common.Hash{}) { + return nil, false, fmt.Errorf("missing or corrupted snapshot, no snapshot block hash") + } + if baseBlockHash != blockHash { + return nil, false, fmt.Errorf("block hash stored on disk (%#x) does not match last accepted (%#x)", baseBlockHash, blockHash) + } + baseRoot := rawdb.ReadSnapshotRoot(diskdb) + if baseRoot == (common.Hash{}) { + return nil, false, errors.New("missing or corrupted snapshot, no snapshot root") + } + if baseRoot != root { + return nil, false, fmt.Errorf("root stored on disk (%#x) does not match last accepted (%#x)", baseRoot, root) + } + + // Retrieve the disk layer generator. It must exist, no matter the + // snapshot is fully generated or not. Otherwise the entire disk + // layer is invalid. + generatorBlob := rawdb.ReadSnapshotGenerator(diskdb) + if len(generatorBlob) == 0 { + return nil, false, errors.New("missing snapshot generator") + } + var generator journalGenerator + if err := rlp.DecodeBytes(generatorBlob, &generator); err != nil { + return nil, false, fmt.Errorf("failed to decode snapshot generator: %v", err) + } + + // Instantiate snapshot as disk layer with last recorded block hash and root + snapshot := &diskLayer{ + diskdb: diskdb, + triedb: triedb, + cache: fastcache.New(cache * 1024 * 1024), + root: baseRoot, + blockHash: baseBlockHash, + created: time.Now(), + } + + // Everything loaded correctly, resume any suspended operations + if !generator.Done { + // If the generator was still wiping, restart one from scratch (fine for + // now as it's rare and the wiper deletes the stuff it touches anyway, so + // restarting won't incur a lot of extra database hops. + var wiper chan struct{} + if generator.Wiping { + log.Info("Resuming previous snapshot wipe") + wiper = wipeSnapshot(diskdb, false) + } + // Whether or not wiping was in progress, load any generator progress too + snapshot.genMarker = generator.Marker + if snapshot.genMarker == nil { + snapshot.genMarker = []byte{} + } + snapshot.genPending = make(chan struct{}) + snapshot.genAbort = make(chan chan struct{}) + + var origin uint64 + if len(generator.Marker) >= 8 { + origin = binary.BigEndian.Uint64(generator.Marker) + } + go snapshot.generate(&generatorStats{ + wiping: wiper, + origin: origin, + start: time.Now(), + accounts: generator.Accounts, + slots: generator.Slots, + storage: common.StorageSize(generator.Storage), + }) + } + + return snapshot, generator.Done, nil +} diff --git a/core/state/snapshot/snapshot.go b/core/state/snapshot/snapshot.go new file mode 100644 index 0000000000..310e46464e --- /dev/null +++ b/core/state/snapshot/snapshot.go @@ -0,0 +1,937 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package snapshot implements a journalled, dynamic state dump. +package snapshot + +import ( + "bytes" + "errors" + "fmt" + "sync" + "sync/atomic" + "time" + + "github.com/VictoriaMetrics/fastcache" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" +) + +const ( + // skipGenThreshold is the minimum time that must have elapsed since the + // creation of the previous disk layer to start snapshot generation on a new + // disk layer. + // + // If disk layers are being discarded at a frequency greater than this threshold, + // starting snapshot generation is not worth it (will be aborted before meaningful + // work can be done). + skipGenThreshold = 500 * time.Millisecond +) + +var ( + snapshotCleanAccountHitMeter = metrics.NewRegisteredMeter("state/snapshot/clean/account/hit", nil) + snapshotCleanAccountMissMeter = metrics.NewRegisteredMeter("state/snapshot/clean/account/miss", nil) + snapshotCleanAccountInexMeter = metrics.NewRegisteredMeter("state/snapshot/clean/account/inex", nil) + snapshotCleanAccountReadMeter = metrics.NewRegisteredMeter("state/snapshot/clean/account/read", nil) + snapshotCleanAccountWriteMeter = metrics.NewRegisteredMeter("state/snapshot/clean/account/write", nil) + + snapshotCleanStorageHitMeter = metrics.NewRegisteredMeter("state/snapshot/clean/storage/hit", nil) + snapshotCleanStorageMissMeter = metrics.NewRegisteredMeter("state/snapshot/clean/storage/miss", nil) + snapshotCleanStorageInexMeter = metrics.NewRegisteredMeter("state/snapshot/clean/storage/inex", nil) + snapshotCleanStorageReadMeter = metrics.NewRegisteredMeter("state/snapshot/clean/storage/read", nil) + snapshotCleanStorageWriteMeter = metrics.NewRegisteredMeter("state/snapshot/clean/storage/write", nil) + + snapshotDirtyAccountHitMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/account/hit", nil) + snapshotDirtyAccountMissMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/account/miss", nil) + snapshotDirtyAccountInexMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/account/inex", nil) + snapshotDirtyAccountReadMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/account/read", nil) + snapshotDirtyAccountWriteMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/account/write", nil) + + snapshotDirtyStorageHitMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/storage/hit", nil) + snapshotDirtyStorageMissMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/storage/miss", nil) + snapshotDirtyStorageInexMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/storage/inex", nil) + snapshotDirtyStorageReadMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/storage/read", nil) + snapshotDirtyStorageWriteMeter = metrics.NewRegisteredMeter("state/snapshot/dirty/storage/write", nil) + + snapshotDirtyAccountHitDepthHist = metrics.NewRegisteredHistogram("state/snapshot/dirty/account/hit/depth", nil, metrics.NewExpDecaySample(1028, 0.015)) + snapshotDirtyStorageHitDepthHist = metrics.NewRegisteredHistogram("state/snapshot/dirty/storage/hit/depth", nil, metrics.NewExpDecaySample(1028, 0.015)) + + snapshotFlushAccountItemMeter = metrics.NewRegisteredMeter("state/snapshot/flush/account/item", nil) + snapshotFlushAccountSizeMeter = metrics.NewRegisteredMeter("state/snapshot/flush/account/size", nil) + snapshotFlushStorageItemMeter = metrics.NewRegisteredMeter("state/snapshot/flush/storage/item", nil) + snapshotFlushStorageSizeMeter = metrics.NewRegisteredMeter("state/snapshot/flush/storage/size", nil) + + snapshotBloomIndexTimer = metrics.NewRegisteredResettingTimer("state/snapshot/bloom/index", nil) + snapshotBloomErrorGauge = metrics.NewRegisteredGaugeFloat64("state/snapshot/bloom/error", nil) + + snapshotBloomAccountTrueHitMeter = metrics.NewRegisteredMeter("state/snapshot/bloom/account/truehit", nil) + snapshotBloomAccountFalseHitMeter = metrics.NewRegisteredMeter("state/snapshot/bloom/account/falsehit", nil) + snapshotBloomAccountMissMeter = metrics.NewRegisteredMeter("state/snapshot/bloom/account/miss", nil) + + snapshotBloomStorageTrueHitMeter = metrics.NewRegisteredMeter("state/snapshot/bloom/storage/truehit", nil) + snapshotBloomStorageFalseHitMeter = metrics.NewRegisteredMeter("state/snapshot/bloom/storage/falsehit", nil) + snapshotBloomStorageMissMeter = metrics.NewRegisteredMeter("state/snapshot/bloom/storage/miss", nil) + + // ErrSnapshotStale is returned from data accessors if the underlying snapshot + // layer had been invalidated due to the chain progressing forward far enough + // to not maintain the layer's original state. + ErrSnapshotStale = errors.New("snapshot stale") + + // ErrStaleParentLayer is returned when Flatten attempts to flatten a diff layer into + // a stale parent. + ErrStaleParentLayer = errors.New("parent disk layer is stale") + + // ErrNotCoveredYet is returned from data accessors if the underlying snapshot + // is being generated currently and the requested data item is not yet in the + // range of accounts covered. + ErrNotCoveredYet = errors.New("not covered yet") + + // ErrNotConstructed is returned if the callers want to iterate the snapshot + // while the generation is not finished yet. + ErrNotConstructed = errors.New("snapshot is not constructed") +) + +// Snapshot represents the functionality supported by a snapshot storage layer. +type Snapshot interface { + // Root returns the root hash for which this snapshot was made. + Root() common.Hash + + // Account directly retrieves the account associated with a particular hash in + // the snapshot slim data format. + Account(hash common.Hash) (*Account, error) + + // AccountRLP directly retrieves the account RLP associated with a particular + // hash in the snapshot slim data format. + AccountRLP(hash common.Hash) ([]byte, error) + + // Storage directly retrieves the storage data associated with a particular hash, + // within a particular account. + Storage(accountHash, storageHash common.Hash) ([]byte, error) +} + +// snapshot is the internal version of the snapshot data layer that supports some +// additional methods compared to the public API. +type snapshot interface { + Snapshot + + BlockHash() common.Hash + + // Parent returns the subsequent layer of a snapshot, or nil if the base was + // reached. + // + // Note, the method is an internal helper to avoid type switching between the + // disk and diff layers. There is no locking involved. + Parent() snapshot + + // Update creates a new layer on top of the existing snapshot diff tree with + // the specified data items. + // + // Note, the maps are retained by the method to avoid copying everything. + Update(blockHash, blockRoot common.Hash, destructs map[common.Hash]struct{}, accounts map[common.Hash][]byte, storage map[common.Hash]map[common.Hash][]byte) *diffLayer + + // Stale return whether this layer has become stale (was flattened across) or + // if it's still live. + Stale() bool + + // AccountIterator creates an account iterator over an arbitrary layer. + AccountIterator(seek common.Hash) AccountIterator + + // StorageIterator creates a storage iterator over an arbitrary layer. + StorageIterator(account common.Hash, seek common.Hash) (StorageIterator, bool) +} + +// Tree is an Ethereum state snapshot tree. It consists of one persistent base +// layer backed by a key-value store, on top of which arbitrarily many in-memory +// diff layers are topped. The memory diffs can form a tree with branching, but +// the disk layer is singleton and common to all. If a reorg goes deeper than the +// disk layer, everything needs to be deleted. +// +// The goal of a state snapshot is twofold: to allow direct access to account and +// storage data to avoid expensive multi-level trie lookups; and to allow sorted, +// cheap iteration of the account/storage tries for sync aid. +type Tree struct { + diskdb ethdb.KeyValueStore // Persistent database to store the snapshot + triedb *trie.Database // In-memory cache to access the trie through + cache int // Megabytes permitted to use for read caches + // Collection of all known layers + // blockHash -> snapshot + blockLayers map[common.Hash]snapshot + // stateRoot -> blockHash -> snapshot + // Update creates a new block layer with a parent taken from the blockHash -> snapshot map + // we can support grabbing a read only Snapshot by getting any one from the state root based map + stateLayers map[common.Hash]map[common.Hash]snapshot + verified bool // Indicates if snapshot integrity has been verified + lock sync.RWMutex + + // Test hooks + onFlatten func() // Hook invoked when the bottom most diff layers are flattened +} + +// New attempts to load an already existing snapshot from a persistent key-value +// store (with a number of memory layers from a journal), ensuring that the head +// of the snapshot matches the expected one. +// +// If the snapshot is missing or the disk layer is broken, the snapshot will be +// reconstructed using both the existing data and the state trie. +// The repair happens on a background thread. +func New(diskdb ethdb.KeyValueStore, triedb *trie.Database, cache int, blockHash, root common.Hash, async bool, rebuild bool, verify bool) (*Tree, error) { + // Create a new, empty snapshot tree + snap := &Tree{ + diskdb: diskdb, + triedb: triedb, + cache: cache, + blockLayers: make(map[common.Hash]snapshot), + stateLayers: make(map[common.Hash]map[common.Hash]snapshot), + verified: !verify, // if verify is false, all verification will be bypassed + } + + // Attempt to load a previously persisted snapshot and rebuild one if failed + head, generated, err := loadSnapshot(diskdb, triedb, cache, blockHash, root) + if err != nil { + if rebuild { + log.Warn("Failed to load snapshot, regenerating", "err", err) + snap.Rebuild(blockHash, root) + if !async { + if err := snap.verifyIntegrity(snap.disklayer(), true); err != nil { + return nil, err + } + } + return snap, nil + } + return nil, err // Bail out the error, don't rebuild automatically. + } + + // Existing snapshot loaded, seed all the layers + // It is unnecessary to grab the lock here, since it was created within this function + // call, but we grab it nevertheless to follow the spec for insertSnap. + snap.lock.Lock() + defer snap.lock.Unlock() + for head != nil { + snap.insertSnap(head) + head = head.Parent() + } + + // Verify any synchronously generated or loaded snapshot from disk + if !async || generated { + if err := snap.verifyIntegrity(snap.disklayer(), !async && !generated); err != nil { + return nil, err + } + } + + return snap, nil +} + +// insertSnap inserts [snap] into the tree. +// Assumes the lock is held. +func (t *Tree) insertSnap(snap snapshot) { + t.blockLayers[snap.BlockHash()] = snap + blockSnaps, ok := t.stateLayers[snap.Root()] + if !ok { + blockSnaps = make(map[common.Hash]snapshot) + t.stateLayers[snap.Root()] = blockSnaps + } + blockSnaps[snap.BlockHash()] = snap +} + +// Snapshot retrieves a snapshot belonging to the given state root, or nil if no +// snapshot is maintained for that state root. +func (t *Tree) Snapshot(stateRoot common.Hash) Snapshot { + return t.getSnapshot(stateRoot, false) +} + +// getSnapshot retrieves a Snapshot by its state root. If the caller already holds the +// snapTree lock when callthing this function, [holdsTreeLock] should be set to true. +func (t *Tree) getSnapshot(stateRoot common.Hash, holdsTreeLock bool) snapshot { + if !holdsTreeLock { + t.lock.RLock() + defer t.lock.RUnlock() + } + + layers := t.stateLayers[stateRoot] + for _, layer := range layers { + return layer + } + return nil +} + +// Snapshots returns all visited layers from the topmost layer with specific +// root and traverses downward. The layer amount is limited by the given number. +// If nodisk is set, then disk layer is excluded. +func (t *Tree) Snapshots(blockHash common.Hash, limits int, nodisk bool) []Snapshot { + t.lock.RLock() + defer t.lock.RUnlock() + + if limits == 0 { + return nil + } + layer, ok := t.blockLayers[blockHash] + if !ok { + return nil + } + var ret []Snapshot + for { + if _, isdisk := layer.(*diskLayer); isdisk && nodisk { + break + } + ret = append(ret, layer) + limits -= 1 + if limits == 0 { + break + } + parent := layer.Parent() + if parent == nil { + break + } + layer = parent + } + return ret +} + +// Update adds a new snapshot into the tree, if that can be linked to an existing +// old parent. It is disallowed to insert a disk layer (the origin of all). +func (t *Tree) Update(blockHash, blockRoot, parentBlockHash common.Hash, destructs map[common.Hash]struct{}, accounts map[common.Hash][]byte, storage map[common.Hash]map[common.Hash][]byte) error { + t.lock.Lock() + defer t.lock.Unlock() + + // Grab the parent snapshot based on the parent block hash, not the parent state root + parent := t.blockLayers[parentBlockHash] + if parent == nil { + return fmt.Errorf("parent [%#x] snapshot missing", parentBlockHash) + } + + snap := t.blockLayers[blockHash] + if snap != nil { + log.Warn("Attempted to insert a snapshot layer for an existing block", + "blockHash", blockHash, "blockRoot", blockRoot, "parentHash", parentBlockHash, + "existingBlockRoot", snap.Root(), + ) + } + + snap = parent.Update(blockHash, blockRoot, destructs, accounts, storage) + t.insertSnap(snap) + return nil +} + +// verifyIntegrity performs an integrity check on the current snapshot using +// verify. Most importantly, verifyIntegrity ensures verify is called at +// most once during the entire lifetime of [Tree], returning immediately if +// already invoked. If [waitBuild] is true, verifyIntegrity will wait for +// generation of the snapshot to finish before verifying. +// +// It is assumed that the caller holds the [snapTree] lock +// when calling this function. +func (t *Tree) verifyIntegrity(base *diskLayer, waitBuild bool) error { + // Find the rebuild termination channel and wait until + // the snapshot is generated + if done := base.genPending; waitBuild && done != nil { + log.Info("Waiting for snapshot generation", "root", base.root) + <-done + } + + if t.verified { + return nil + } + + if base.genMarker != nil { + return errors.New("cannot verify integrity of an unfinished snapshot") + } + + start := time.Now() + log.Info("Verifying snapshot integrity", "root", base.root) + if err := t.verify(base.root, true); err != nil { + return fmt.Errorf("unable to verify snapshot integrity: %w", err) + } + + log.Info("Verified snapshot integrity", "root", base.root, "elapsed", time.Since(start)) + t.verified = true + return nil +} + +// Flatten flattens the snapshot for [blockHash] into its parent. if its +// parent is not a disk layer, Flatten will return an error. +// Note: a blockHash is used instead of a state root so that the exact state +// transition between the two states is well defined. This is intended to +// prevent the following edge case +// A +// / \ +// B C +// | +// D +// In this scenario, it's possible For (A, B) and (A, C, D) to be two +// different paths to the resulting state. We use block hashes and parent +// block hashes to ensure that the exact path through which we flatten +// diffLayers is well defined. +func (t *Tree) Flatten(blockHash common.Hash) error { + t.lock.Lock() + defer t.lock.Unlock() + + start := time.Now() + snap, ok := t.blockLayers[blockHash] + if !ok { + return fmt.Errorf("cannot flatten missing snapshot: %s", blockHash) + } + diff, ok := snap.(*diffLayer) + if !ok { + return fmt.Errorf("cannot flatten disk layer: (%s, %s)", blockHash, snap.Root()) + } + if diff.parent == nil { + return fmt.Errorf("cannot flatten snapshot with missing parent (%s, %s)", blockHash, diff.root) + } + if parentDiff, ok := diff.parent.(*diffLayer); ok { + return fmt.Errorf("cannot flatten snapshot (%s, %s) into diff layer parent (%s, %s)", blockHash, diff.root, parentDiff.blockHash, parentDiff.root) + } + parentLayer := t.blockLayers[diff.parent.BlockHash()] + if parentLayer == nil { + return fmt.Errorf("snapshot missing parent layer: %s", diff.parent.BlockHash()) + } + + diff.lock.Lock() + // Invoke the hook if it's registered. Ugly hack. + if t.onFlatten != nil { + t.onFlatten() + } + base, snapshotGenerated, err := diffToDisk(diff) + diff.lock.Unlock() + if err != nil { + return err + } + + // Remove parent layer + if err := t.discard(diff.parent.BlockHash(), true); err != nil { + return fmt.Errorf("failed to discard parent layer while flattening (%s, %s): %w", blockHash, diff.root, err) + } + // We created a new diskLayer [base] to replace [diff], so we need to replace + // it in both maps and replace all pointers to it. + t.blockLayers[base.blockHash] = base + stateSnaps := t.stateLayers[base.root] + // stateSnaps must already be initialized here, since we are replacing + // an existing snapshot instead of adding a new one. + stateSnaps[base.blockHash] = base + + // Replace the parent pointers for any snapshot that referenced + // the replaced diffLayer. + for _, snap := range t.blockLayers { + if diff, ok := snap.(*diffLayer); ok { + if base.blockHash == diff.parent.BlockHash() { + diff.lock.Lock() + diff.parent = base + diff.lock.Unlock() + } + } + } + + // TODO add tracking of children to the snapshots to reduce overhead here. + children := make(map[common.Hash][]common.Hash) + for blockHash, snap := range t.blockLayers { + if diff, ok := snap.(*diffLayer); ok { + parent := diff.parent.BlockHash() + children[parent] = append(children[parent], blockHash) + } + } + var remove func(blockHash common.Hash) + remove = func(blockHash common.Hash) { + t.discard(blockHash, false) + for _, child := range children[blockHash] { + remove(child) + } + delete(children, blockHash) + } + for blockHash, snap := range t.blockLayers { + if snap.Stale() { + remove(blockHash) + } + } + // If the disk layer was modified, regenerate all the cumulative blooms + var rebloom func(blockHash common.Hash) + rebloom = func(blockHash common.Hash) { + if diff, ok := t.blockLayers[blockHash].(*diffLayer); ok { + diff.rebloom(base) + } + for _, child := range children[blockHash] { + rebloom(child) + } + } + rebloom(base.blockHash) + log.Debug("Flattened snapshot tree", "blockHash", blockHash, "root", base.root, "size", len(t.blockLayers), "elapsed", common.PrettyDuration(time.Since(start))) + + if !snapshotGenerated { + return nil + } + return t.verifyIntegrity(base, false) +} + +// Length returns the number of snapshot layers that is currently being maintained. +func (t *Tree) NumStateLayers() int { + t.lock.RLock() + defer t.lock.RUnlock() + + return len(t.stateLayers) +} + +func (t *Tree) NumBlockLayers() int { + t.lock.RLock() + defer t.lock.RUnlock() + + return len(t.blockLayers) +} + +// Discard removes layers that we no longer need +func (t *Tree) Discard(blockHash common.Hash) error { + t.lock.Lock() + defer t.lock.Unlock() + + return t.discard(blockHash, false) +} + +// discard removes the snapshot associated with [blockHash] from the +// snapshot tree. +// If [force] is true, discard may delete the disk layer. This should +// only be called within Flatten, when a new disk layer is being created. +// Assumes the lock is held. +func (t *Tree) discard(blockHash common.Hash, force bool) error { + snap := t.blockLayers[blockHash] + if snap == nil { + return fmt.Errorf("cannot discard missing snapshot: %s", blockHash) + } + _, ok := snap.(*diffLayer) + // Never discard the disk layer + if !ok && !force { + return fmt.Errorf("cannot discard the disk layer: %s", blockHash) + } + snaps, ok := t.stateLayers[snap.Root()] + if !ok { + return fmt.Errorf("cannot discard snapshot %s missing from state: %s", blockHash, snap.Root()) + } + // Discard the block from the map. If there are no more blocks + // mapping to the same state remove it from [stateLayers] as well. + delete(snaps, blockHash) + if len(snaps) == 0 { + delete(t.stateLayers, snap.Root()) + } + delete(t.blockLayers, blockHash) + return nil +} + +// AbortGeneration aborts an ongoing snapshot generation process (if it hasn't +// stopped already). +// +// It is not required to manually abort snapshot generation. If generation has not +// been manually aborted prior to invoking [diffToDisk], it will be aborted anyways. +// +// It is safe to call this method multiple times and when there is no snapshot +// generation currently underway. +func (t *Tree) AbortGeneration() { + t.lock.Lock() + defer t.lock.Unlock() + + dl := t.disklayer() + dl.abortGeneration() +} + +// abortGeneration sends an abort message to the generate goroutine and waits +// for it to shutdown before returning (if it is running). This call should not +// be made concurrently. +func (dl *diskLayer) abortGeneration() bool { + // Store ideal time for abort to get better estimate of load + // + // Note that we set this time regardless if abortion was skipped otherwise we + // will never restart generation (age will always be negative). + if dl.abortStarted.IsZero() { + dl.abortStarted = time.Now() + } + + // If the disk layer is running a snapshot generator, abort it + if dl.genAbort != nil && dl.genStats == nil { + abort := make(chan struct{}) + dl.genAbort <- abort + <-abort + return true + } + + return false +} + +// diffToDisk merges a bottom-most diff into the persistent disk layer underneath +// it. The method will panic if called onto a non-bottom-most diff layer. +// +// The disk layer persistence should be operated in an atomic way. All updates should +// be discarded if the whole transition if not finished. +func diffToDisk(bottom *diffLayer) (*diskLayer, bool, error) { + var ( + base = bottom.parent.(*diskLayer) + batch = base.diskdb.NewBatch() + ) + + // Attempt to abort generation (if not already aborted) + base.abortGeneration() + + // Put the deletion in the batch writer, flush all updates in the final step. + rawdb.DeleteSnapshotBlockHash(batch) + rawdb.DeleteSnapshotRoot(batch) + + // Mark the original base as stale as we're going to create a new wrapper + base.lock.Lock() + if base.stale { + return nil, false, ErrStaleParentLayer // we've committed into the same base from two children, boo + } + base.stale = true + base.lock.Unlock() + + // Destroy all the destructed accounts from the database + for hash := range bottom.destructSet { + // Skip any account not covered yet by the snapshot + if base.genMarker != nil && bytes.Compare(hash[:], base.genMarker) > 0 { + continue + } + // Remove all storage slots + rawdb.DeleteAccountSnapshot(batch, hash) + base.cache.Set(hash[:], nil) + + it := rawdb.IterateStorageSnapshots(base.diskdb, hash) + for it.Next() { + if key := it.Key(); len(key) == 65 { // TODO(karalabe): Yuck, we should move this into the iterator + batch.Delete(key) + base.cache.Del(key[1:]) + snapshotFlushStorageItemMeter.Mark(1) + + // Ensure we don't delete too much data blindly (contract can be + // huge). It's ok to flush, the root will go missing in case of a + // crash and we'll detect and regenerate the snapshot. + if batch.ValueSize() > ethdb.IdealBatchSize { + if err := batch.Write(); err != nil { + log.Crit("Failed to write storage deletions", "err", err) + } + batch.Reset() + } + } + } + it.Release() + } + // Push all updated accounts into the database + for hash, data := range bottom.accountData { + // Skip any account not covered yet by the snapshot + if base.genMarker != nil && bytes.Compare(hash[:], base.genMarker) > 0 { + continue + } + // Push the account to disk + rawdb.WriteAccountSnapshot(batch, hash, data) + base.cache.Set(hash[:], data) + snapshotCleanAccountWriteMeter.Mark(int64(len(data))) + + snapshotFlushAccountItemMeter.Mark(1) + snapshotFlushAccountSizeMeter.Mark(int64(len(data))) + + // Ensure we don't write too much data blindly. It's ok to flush, the + // root will go missing in case of a crash and we'll detect and regen + // the snapshot. + if batch.ValueSize() > ethdb.IdealBatchSize { + if err := batch.Write(); err != nil { + log.Crit("Failed to write storage deletions", "err", err) + } + batch.Reset() + } + } + // Push all the storage slots into the database + for accountHash, storage := range bottom.storageData { + // Skip any account not covered yet by the snapshot + if base.genMarker != nil && bytes.Compare(accountHash[:], base.genMarker) > 0 { + continue + } + // Generation might be mid-account, track that case too + midAccount := base.genMarker != nil && bytes.Equal(accountHash[:], base.genMarker[:common.HashLength]) + + for storageHash, data := range storage { + // Skip any slot not covered yet by the snapshot + if midAccount && bytes.Compare(storageHash[:], base.genMarker[common.HashLength:]) > 0 { + continue + } + if len(data) > 0 { + rawdb.WriteStorageSnapshot(batch, accountHash, storageHash, data) + base.cache.Set(append(accountHash[:], storageHash[:]...), data) + snapshotCleanStorageWriteMeter.Mark(int64(len(data))) + } else { + rawdb.DeleteStorageSnapshot(batch, accountHash, storageHash) + base.cache.Set(append(accountHash[:], storageHash[:]...), nil) + } + snapshotFlushStorageItemMeter.Mark(1) + snapshotFlushStorageSizeMeter.Mark(int64(len(data))) + } + } + // Update the snapshot block marker and write any remainder data + rawdb.WriteSnapshotBlockHash(batch, bottom.blockHash) + rawdb.WriteSnapshotRoot(batch, bottom.root) + + // Write out the generator progress marker and report + journalProgress(batch, base.genMarker, base.genStats) + + // Flush all the updates in the single db operation. Ensure the + // disk layer transition is atomic. + if err := batch.Write(); err != nil { + log.Crit("Failed to write leftover snapshot", "err", err) + } + log.Debug("Journalled disk layer", "root", bottom.root, "complete", base.genMarker == nil) + res := &diskLayer{ + root: bottom.root, + blockHash: bottom.blockHash, + cache: base.cache, + diskdb: base.diskdb, + triedb: base.triedb, + genMarker: base.genMarker, + genPending: base.genPending, + created: time.Now(), + } + // If snapshot generation hasn't finished yet, port over all the starts and + // continue where the previous round left off. + // + // Note, the `base.genAbort` comparison is not used normally, it's checked + // to allow the tests to play with the marker without triggering this path. + if base.genMarker != nil && base.genAbort != nil { + res.genMarker = base.genMarker + res.genAbort = make(chan chan struct{}) + + // If the diskLayer we are about to discard is not very old, we skip + // generation on the next layer (assuming generation will just get canceled + // before doing meaningful work anyways). + diskLayerAge := base.abortStarted.Sub(base.created) + if diskLayerAge < skipGenThreshold { + log.Debug("Skipping snapshot generation", "previous disk layer age", diskLayerAge) + res.genStats = base.genStats + } else { + go res.generate(base.genStats) + } + } + return res, base.genMarker == nil, nil +} + +// Rebuild wipes all available snapshot data from the persistent database and +// discard all caches and diff layers. Afterwards, it starts a new snapshot +// generator with the given root hash. +func (t *Tree) Rebuild(blockHash, root common.Hash) { + t.lock.Lock() + defer t.lock.Unlock() + + // Firstly delete any recovery flag in the database. Because now we are + // building a brand new snapshot. Also reenable the snapshot feature. + rawdb.DeleteSnapshotRecoveryNumber(t.diskdb) + + // Track whether there's a wipe currently running and keep it alive if so + var wiper chan struct{} + + // Iterate over and mark all layers stale + for _, layer := range t.blockLayers { + switch layer := layer.(type) { + case *diskLayer: + // If the base layer is generating, abort it and save + if layer.genAbort != nil { + abort := make(chan struct{}) + layer.genAbort <- abort + <-abort + + if stats := layer.genStats; stats != nil { + wiper = stats.wiping + } + + } + // Layer should be inactive now, mark it as stale + layer.lock.Lock() + layer.stale = true + layer.lock.Unlock() + + case *diffLayer: + // If the layer is a simple diff, simply mark as stale + layer.lock.Lock() + atomic.StoreUint32(&layer.stale, 1) + layer.lock.Unlock() + + default: + panic(fmt.Sprintf("unknown layer type: %T", layer)) + } + } + // Start generating a new snapshot from scratch on a background thread. The + // generator will run a wiper first if there's not one running right now. + log.Info("Rebuilding state snapshot") + base := generateSnapshot(t.diskdb, t.triedb, t.cache, blockHash, root, wiper) + t.blockLayers = map[common.Hash]snapshot{ + blockHash: base, + } + t.stateLayers = map[common.Hash]map[common.Hash]snapshot{ + root: { + blockHash: base, + }, + } +} + +// AccountIterator creates a new account iterator for the specified root hash and +// seeks to a starting account hash. When [force] is true, a new account +// iterator is created without acquiring the [snapTree] lock and without +// confirming that the snapshot on the disk layer is fully generated. +func (t *Tree) AccountIterator(root common.Hash, seek common.Hash, force bool) (AccountIterator, error) { + if !force { + ok, err := t.generating() + if err != nil { + return nil, err + } + if ok { + return nil, ErrNotConstructed + } + } + return newFastAccountIterator(t, root, seek, force) +} + +// StorageIterator creates a new storage iterator for the specified root hash and +// account. The iterator will be move to the specific start position. When [force] +// is true, a new account iterator is created without acquiring the [snapTree] +// lock and without confirming that the snapshot on the disk layer is fully generated. +func (t *Tree) StorageIterator(root common.Hash, account common.Hash, seek common.Hash, force bool) (StorageIterator, error) { + if !force { + ok, err := t.generating() + if err != nil { + return nil, err + } + if ok { + return nil, ErrNotConstructed + } + } + return newFastStorageIterator(t, root, account, seek, force) +} + +// Verify iterates the whole state(all the accounts as well as the corresponding storages) +// with the specific root and compares the re-computed hash with the original one. +func (t *Tree) Verify(root common.Hash) error { + return t.verify(root, false) +} + +// verify iterates the whole state(all the accounts as well as the corresponding storages) +// with the specific root and compares the re-computed hash with the original one. +// When [force] is true, it is assumed that the caller has confirmed that the +// snapshot is generated and that they hold the snapTree lock. +func (t *Tree) verify(root common.Hash, force bool) error { + acctIt, err := t.AccountIterator(root, common.Hash{}, force) + if err != nil { + return err + } + defer acctIt.Release() + + got, err := generateTrieRoot(nil, acctIt, common.Hash{}, stackTrieGenerate, func(db ethdb.KeyValueWriter, accountHash, codeHash common.Hash, stat *generateStats) (common.Hash, error) { + storageIt, err := t.StorageIterator(root, accountHash, common.Hash{}, force) + if err != nil { + return common.Hash{}, err + } + defer storageIt.Release() + + hash, err := generateTrieRoot(nil, storageIt, accountHash, stackTrieGenerate, nil, stat, false) + if err != nil { + return common.Hash{}, err + } + return hash, nil + }, newGenerateStats(), true) + if err != nil { + return err + } + if got != root { + return fmt.Errorf("state root hash mismatch: got %x, want %x", got, root) + } + return nil +} + +// disklayer is an internal helper function to return the disk layer. +// The lock of snapTree is assumed to be held already. +func (t *Tree) disklayer() *diskLayer { + var snap snapshot + for _, s := range t.blockLayers { + snap = s + break + } + if snap == nil { + return nil + } + switch layer := snap.(type) { + case *diskLayer: + return layer + case *diffLayer: + return layer.origin + default: + panic(fmt.Sprintf("%T: undefined layer", snap)) + } +} + +// diskRoot is a internal helper function to return the disk layer root. +// The lock of snapTree is assumed to be held already. +func (t *Tree) diskRoot() common.Hash { + disklayer := t.disklayer() + if disklayer == nil { + return common.Hash{} + } + return disklayer.Root() +} + +// generating is an internal helper function which reports whether the snapshot +// is still under the construction. +func (t *Tree) generating() (bool, error) { + t.lock.Lock() + defer t.lock.Unlock() + + layer := t.disklayer() + if layer == nil { + return false, errors.New("disk layer is missing") + } + layer.lock.RLock() + defer layer.lock.RUnlock() + return layer.genMarker != nil, nil +} + +// diskRoot is a external helper function to return the disk layer root. +func (t *Tree) DiskRoot() common.Hash { + t.lock.Lock() + defer t.lock.Unlock() + + return t.diskRoot() +} + +// NewTestTree creates a *Tree with a pre-populated diskLayer +func NewTestTree(diskdb ethdb.KeyValueStore, blockHash, root common.Hash) *Tree { + base := &diskLayer{ + diskdb: diskdb, + root: root, + blockHash: blockHash, + cache: fastcache.New(128 * 256), + created: time.Now(), + } + return &Tree{ + blockLayers: map[common.Hash]snapshot{ + blockHash: base, + }, + stateLayers: map[common.Hash]map[common.Hash]snapshot{ + root: { + blockHash: base, + }, + }, + } +} diff --git a/core/state/snapshot/snapshot_test.go b/core/state/snapshot/snapshot_test.go new file mode 100644 index 0000000000..fb033f6ffb --- /dev/null +++ b/core/state/snapshot/snapshot_test.go @@ -0,0 +1,715 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "fmt" + "math/big" + "math/rand" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" +) + +// randomHash generates a random blob of data and returns it as a hash. +func randomHash() common.Hash { + var hash common.Hash + if n, err := rand.Read(hash[:]); n != common.HashLength || err != nil { + panic(err) + } + return hash +} + +// randomAccount generates a random account and returns it RLP encoded. +func randomAccount() []byte { + root := randomHash() + a := Account{ + Balance: big.NewInt(rand.Int63()), + Nonce: rand.Uint64(), + Root: root[:], + CodeHash: emptyCode[:], + } + data, _ := rlp.EncodeToBytes(a) + return data +} + +// randomAccountSet generates a set of random accounts with the given strings as +// the account address hashes. +func randomAccountSet(hashes ...string) map[common.Hash][]byte { + accounts := make(map[common.Hash][]byte) + for _, hash := range hashes { + accounts[common.HexToHash(hash)] = randomAccount() + } + return accounts +} + +// randomStorageSet generates a set of random slots with the given strings as +// the slot addresses. +func randomStorageSet(accounts []string, hashes [][]string, nilStorage [][]string) map[common.Hash]map[common.Hash][]byte { + storages := make(map[common.Hash]map[common.Hash][]byte) + for index, account := range accounts { + storages[common.HexToHash(account)] = make(map[common.Hash][]byte) + + if index < len(hashes) { + hashes := hashes[index] + for _, hash := range hashes { + storages[common.HexToHash(account)][common.HexToHash(hash)] = randomHash().Bytes() + } + } + if index < len(nilStorage) { + nils := nilStorage[index] + for _, hash := range nils { + storages[common.HexToHash(account)][common.HexToHash(hash)] = nil + } + } + } + return storages +} + +// Tests that if a disk layer becomes stale, no active external references will +// be returned with junk data. This version of the test flattens every diff layer +// to check internal corner case around the bottom-most memory accumulator. +func TestDiskLayerExternalInvalidationFullFlatten(t *testing.T) { + // Create an empty base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Retrieve a reference to the base and commit a diff on top + ref := snaps.Snapshot(common.HexToHash("0xff01")) + + accounts := map[common.Hash][]byte{ + common.HexToHash("0xa1"): randomAccount(), + } + if err := snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + if n := snaps.NumStateLayers(); n != 2 { + t.Errorf("pre-flatten state layer count mismatch: have %d, want %d", n, 2) + } + if n := snaps.NumBlockLayers(); n != 2 { + t.Errorf("pre-flatten block layer count mismatch: have %d, want %d", n, 2) + } + // Commit the diff layer onto the disk and ensure it's persisted + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(common.HexToHash("0x02")); err != nil { + t.Fatalf("failed to merge diff layer onto disk: %v", err) + } + // Since the base layer was modified, ensure that data retrieval on the external reference fail + if acc, err := ref.Account(common.HexToHash("0x01")); err != ErrSnapshotStale { + t.Errorf("stale reference returned account: %v (err: %v)", acc, err) + } + if slot, err := ref.Storage(common.HexToHash("0xa1"), common.HexToHash("0xb1")); err != ErrSnapshotStale { + t.Errorf("stale reference returned storage slot: %v (err: %v)", slot, err) + } + if n := snaps.NumStateLayers(); n != 1 { + t.Errorf("pre-flatten state layer count mismatch: have %d, want %d", n, 1) + } + if n := snaps.NumBlockLayers(); n != 1 { + t.Errorf("pre-flatten block layer count mismatch: have %d, want %d", n, 1) + } +} + +// Tests that if a disk layer becomes stale, no active external references will +// be returned with junk data. This version of the test retains the bottom diff +// layer to check the usual mode of operation where the accumulator is retained. +func TestDiskLayerExternalInvalidationPartialFlatten(t *testing.T) { + // Create an empty base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Retrieve a reference to the base and commit two diffs on top + ref := snaps.Snapshot(common.HexToHash("0xff01")) + + accounts := map[common.Hash][]byte{ + common.HexToHash("0xa1"): randomAccount(), + } + if err := snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + if err := snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + if n := snaps.NumBlockLayers(); n != 3 { + t.Errorf("pre-cap block layer count mismatch: have %d, want %d", n, 3) + } + if n := snaps.NumStateLayers(); n != 3 { + t.Errorf("pre-cap state layer count mismatch: have %d, want %d", n, 3) + } + // Commit the diff layer onto the disk and ensure it's persisted + defer func(memcap uint64) { aggregatorMemoryLimit = memcap }(aggregatorMemoryLimit) + aggregatorMemoryLimit = 0 + + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(common.HexToHash("0x02")); err != nil { + t.Fatalf("Failed to flatten diff layer onto disk: %v", err) + } + // Since the base layer was modified, ensure that data retrieval on the external reference fails + if acc, err := ref.Account(common.HexToHash("0x01")); err != ErrSnapshotStale { + t.Errorf("stale reference returned account: %v (err: %v)", acc, err) + } + if slot, err := ref.Storage(common.HexToHash("0xa1"), common.HexToHash("0xb1")); err != ErrSnapshotStale { + t.Errorf("stale reference returned storage slot: %#x (err: %v)", slot, err) + } + if n := snaps.NumBlockLayers(); n != 2 { + t.Errorf("pre-cap block layer count mismatch: have %d, want %d", n, 2) + } + if n := snaps.NumStateLayers(); n != 2 { + t.Errorf("pre-cap state layer count mismatch: have %d, want %d", n, 2) + } +} + +// Tests that if a diff layer becomes stale, no active external references will +// be returned with junk data. This version of the test retains the bottom diff +// layer to check the usual mode of operation where the accumulator is retained. +func TestDiffLayerExternalInvalidationPartialFlatten(t *testing.T) { + // Create an empty base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // Commit three diffs on top and retrieve a reference to the bottommost + accounts := map[common.Hash][]byte{ + common.HexToHash("0xa1"): randomAccount(), + } + if err := snaps.Update(common.HexToHash("0x02"), common.HexToHash("0xff02"), common.HexToHash("0x01"), nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + if err := snaps.Update(common.HexToHash("0x03"), common.HexToHash("0xff03"), common.HexToHash("0x02"), nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + if err := snaps.Update(common.HexToHash("0x04"), common.HexToHash("0xff04"), common.HexToHash("0x03"), nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + if n := snaps.NumStateLayers(); n != 4 { + t.Errorf("pre-flatten state layer count mismatch: have %d, want %d", n, 4) + } + if n := snaps.NumBlockLayers(); n != 4 { + t.Errorf("pre-flatten block layer count mismatch: have %d, want %d", n, 4) + } + ref := snaps.Snapshot(common.HexToHash("0xff02")) + + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(common.HexToHash("0x02")); err != nil { + t.Fatal(err) + } + // Since the accumulator diff layer was modified, ensure that data retrieval on the external reference fails + if acc, err := ref.Account(common.HexToHash("0x01")); err != ErrSnapshotStale { + t.Errorf("stale reference returned account: %v (err: %v)", acc, err) + } + if slot, err := ref.Storage(common.HexToHash("0xa1"), common.HexToHash("0xb1")); err != ErrSnapshotStale { + t.Errorf("stale reference returned storage slot: %#x (err: %v)", slot, err) + } + if n := snaps.NumStateLayers(); n != 3 { + t.Errorf("pre-flatten state layer count mismatch: have %d, want %d", n, 3) + } + if n := snaps.NumBlockLayers(); n != 3 { + t.Errorf("pre-flatten block layer count mismatch: have %d, want %d", n, 3) + } +} + +// TestPostCapBasicDataAccess tests some functionality regarding capping/flattening. +func TestPostFlattenBasicDataAccess(t *testing.T) { + // setAccount is a helper to construct a random account entry and assign it to + // an account slot in a snapshot + setAccount := func(accKey string) map[common.Hash][]byte { + return map[common.Hash][]byte{ + common.HexToHash(accKey): randomAccount(), + } + } + // Create a starting base layer and a snapshot tree out of it + snaps := NewTestTree(rawdb.NewMemoryDatabase(), common.HexToHash("0x01"), common.HexToHash("0xff01")) + // The lowest difflayer + snaps.Update(common.HexToHash("0xa1"), common.HexToHash("0xffa1"), common.HexToHash("0x01"), nil, setAccount("0xa1"), nil) + snaps.Update(common.HexToHash("0xa2"), common.HexToHash("0xffa2"), common.HexToHash("0xa1"), nil, setAccount("0xa2"), nil) + snaps.Update(common.HexToHash("0xb2"), common.HexToHash("0xffb2"), common.HexToHash("0xa1"), nil, setAccount("0xb2"), nil) + + snaps.Update(common.HexToHash("0xa3"), common.HexToHash("0xffa3"), common.HexToHash("0xa2"), nil, setAccount("0xa3"), nil) + snaps.Update(common.HexToHash("0xb3"), common.HexToHash("0xffb3"), common.HexToHash("0xb2"), nil, setAccount("0xb3"), nil) + + // checkExist verifies if an account exiss in a snapshot + checkExist := func(layer Snapshot, key string) error { + if data, _ := layer.Account(common.HexToHash(key)); data == nil { + return fmt.Errorf("expected %x to exist, got nil", common.HexToHash(key)) + } + return nil + } + checkNotExist := func(layer Snapshot, key string) error { + if data, err := layer.Account(common.HexToHash(key)); err != nil { + return fmt.Errorf("expected %x to not error: %w", key, err) + } else if data != nil { + return fmt.Errorf("expected %x to be empty, got %v", key, data) + } + return nil + } + // shouldErr checks that an account access errors as expected + shouldErr := func(layer Snapshot, key string) error { + if data, err := layer.Account(common.HexToHash(key)); err == nil { + return fmt.Errorf("expected error, got data %v", data) + } + return nil + } + // Check basics for both snapshots 0xffa3 and 0xffb3 + snap := snaps.Snapshot(common.HexToHash("0xffa3")).(*diffLayer) + + // Check that the accounts that should exist are present in the snapshot + if err := checkExist(snap, "0xa1"); err != nil { + t.Error(err) + } + if err := checkExist(snap, "0xa2"); err != nil { + t.Error(err) + } + if err := checkExist(snap, "0xa1"); err != nil { + t.Error(err) + } + // Check that the accounts that should only exist in the other branch + // of the snapshot tree are not present in the snapshot. + if err := checkNotExist(snap, "0xb1"); err != nil { + t.Error(err) + } + if err := checkNotExist(snap, "0xb2"); err != nil { + t.Error(err) + } + + snap = snaps.Snapshot(common.HexToHash("0xffb3")).(*diffLayer) + + // Check that the accounts that should exist are present in the snapshot + if err := checkExist(snap, "0xa1"); err != nil { + t.Error(err) + } + if err := checkExist(snap, "0xb2"); err != nil { + t.Error(err) + } + if err := checkExist(snap, "0xb3"); err != nil { + t.Error(err) + } + // Check that the accounts that should only exist in the other branch + // of the snapshot tree are not present in the snapshot. + if err := checkNotExist(snap, "0xa2"); err != nil { + t.Error(err) + } + + // Flatten a non-existent block should fail + if err := snaps.Flatten(common.HexToHash("0x1337")); err == nil { + t.Errorf("expected error, got none") + } + + // Now, merge the a-chain layer by layer + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(common.HexToHash("0xa1")); err != nil { + t.Error(err) + } + if err := snaps.Flatten(common.HexToHash("0xa2")); err != nil { + t.Error(err) + } + + // At this point, a2 got merged into a1. Thus, a1 is now modified, and as a1 is + // the parent of b2, b2 should no longer be able to iterate into parent. + + // These should still be accessible since it doesn't require iteration into the + // disk layer. However, it's also valid for these diffLayers to be marked as stale. + if err := checkExist(snap, "0xb2"); err != nil { + t.Error(err) + } + if err := checkExist(snap, "0xb3"); err != nil { + t.Error(err) + } + // But 0xa1 would need iteration into the modified parent + // and 0xa2 and 0xa3 should never be present since they are + // on the other branch of the snapshot tree. These should strictly + // error since they're not in the diff layers and will result in + // traversing into the stale disk layer. + if err := shouldErr(snap, "0xa1"); err != nil { + t.Error(err) + } + if err := shouldErr(snap, "0xa2"); err != nil { + t.Error(err) + } + if err := shouldErr(snap, "0xa3"); err != nil { + t.Error(err) + } + + snap = snaps.Snapshot(common.HexToHash("0xffa3")).(*diffLayer) + // Check that the accounts that should exist are present in the snapshot + if err := checkExist(snap, "0xa1"); err != nil { + t.Error(err) + } + if err := checkExist(snap, "0xa2"); err != nil { + t.Error(err) + } + if err := checkExist(snap, "0xa3"); err != nil { + t.Error(err) + } + // Check that the accounts that should only exist in the other branch + // of the snapshot tree are not present in the snapshot. + if err := checkNotExist(snap, "0xb1"); err != nil { + t.Error(err) + } + if err := checkNotExist(snap, "0xb2"); err != nil { + t.Error(err) + } + + diskLayer := snaps.Snapshot(common.HexToHash("0xffa2")) + // Check that the accounts that should exist are present in the snapshot + if err := checkExist(diskLayer, "0xa1"); err != nil { + t.Error(err) + } + if err := checkExist(diskLayer, "0xa2"); err != nil { + t.Error(err) + } + // 0xa3 should not be included until the diffLayer built on top of + // 0xffa2. + if err := checkNotExist(diskLayer, "0xa3"); err != nil { + t.Error(err) + } + // Check that the accounts that should only exist in the other branch + // of the snapshot tree are not present in the snapshot. + if err := checkNotExist(diskLayer, "0xb1"); err != nil { + t.Error(err) + } + if err := checkNotExist(diskLayer, "0xb2"); err != nil { + t.Error(err) + } +} + +// TestTreeFlattenDoesNotDropPendingLayers tests that Tree.Flatten correctly +// retains layers built on top of the given root layer in the presence of multiple +// different blocks inserted with an identical state root. +// In this example, (B, C) and (D, E) share the identical state root, but were +// inserted under different blocks. +// A +// / \ +// B C +// | | +// D E +// +// `t.Flatten(C)` should result in: +// +// B C +// | | +// D E +// With the branch D, E, hanging and relying on Discard to be called to +// garbage collect the references. +func TestTreeFlattenDoesNotDropPendingLayers(t *testing.T) { + var ( + baseRoot = common.HexToHash("0xffff01") + baseBlockHash = common.HexToHash("0x01") + ) + snaps := NewTestTree(rawdb.NewMemoryDatabase(), baseBlockHash, baseRoot) + accounts := map[common.Hash][]byte{ + common.HexToHash("0xa1"): randomAccount(), + } + + // Create N layers on top of base (N+1) total + parentAHash := baseBlockHash + parentBHash := baseBlockHash + totalLayers := 10 + for i := 2; i <= totalLayers; i++ { + diffBlockAHash := common.Hash{0xee, 0xee, byte(i)} + diffBlockBHash := common.Hash{0xdd, 0xdd, byte(i)} + diffBlockRoot := common.Hash{0xff, 0xff, byte(i)} + if err := snaps.Update(diffBlockAHash, diffBlockRoot, parentAHash, nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + if err := snaps.Update(diffBlockBHash, diffBlockRoot, parentBHash, nil, accounts, nil); err != nil { + t.Fatalf("failed to create a diff layer: %v", err) + } + + parentAHash = diffBlockAHash + parentBHash = diffBlockBHash + } + + if n := snaps.NumStateLayers(); n != 10 { + t.Errorf("pre-flatten state layer count mismatch: have %d, want %d", n, 10) + } + if n := snaps.NumBlockLayers(); n != 19 { + t.Errorf("pre-flatten block layer count mismatch: have %d, want %d", n, 19) + } + + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(common.Hash{0xee, 0xee, byte(2)}); err != nil { + t.Fatalf("failed to flatten diff layer from chain A: %v", err) + } + + if n := snaps.NumStateLayers(); n != 9 { + t.Errorf("pre-flatten state layer count mismatch: have %d, want %d", n, 9) + } + if n := snaps.NumBlockLayers(); n != 18 { + t.Errorf("pre-flatten block layer count mismatch: have %d, want %d", n, 18) + } + + // Attempt to flatten from chain B should error + if err := snaps.Flatten(common.Hash{0xdd, 0xdd, byte(2)}); err == nil { + t.Errorf("expected flattening abandoned chain to error") + } + + for i := 2; i <= 10; i++ { + if err := snaps.Discard(common.Hash{0xdd, 0xdd, byte(i)}); err != nil { + t.Errorf("attempt to discard snapshot from abandoned chain failed: %v", err) + } + } + + if n := snaps.NumStateLayers(); n != 9 { + t.Errorf("pre-flatten state layer count mismatch: have %d, want %d", n, 9) + } + if n := snaps.NumBlockLayers(); n != 9 { + t.Errorf("pre-flatten block layer count mismatch: have %d, want %d", n, 18) + } +} + +func TestStaleOriginLayer(t *testing.T) { + var ( + baseRoot = common.HexToHash("0xffff01") + baseBlockHash = common.HexToHash("0x01") + diffRootA = common.HexToHash("0xff02") + diffBlockHashA = common.HexToHash("0x02") + diffRootB = common.HexToHash("0xff03") + diffBlockHashB = common.HexToHash("0x03") + diffRootC = common.HexToHash("0xff04") + diffBlockHashC = common.HexToHash("0x04") + ) + snaps := NewTestTree(rawdb.NewMemoryDatabase(), baseBlockHash, baseRoot) + addrA := randomHash() + accountsA := map[common.Hash][]byte{ + addrA: randomAccount(), + } + addrB := randomHash() + accountsB := map[common.Hash][]byte{ + addrB: randomAccount(), + } + addrC := randomHash() + accountsC := map[common.Hash][]byte{ + addrC: randomAccount(), + } + + // Create diff layer A containing account 0xa1 + if err := snaps.Update(diffBlockHashA, diffRootA, baseBlockHash, nil, accountsA, nil); err != nil { + t.Errorf("failed to create diff layer A: %v", err) + } + // Flatten account 0xa1 to disk + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(diffBlockHashA); err != nil { + t.Errorf("failed to flatten diff block A: %v", err) + } + // Create diff layer B containing account 0xa2 + // The bloom filter should contain only 0xa2. + if err := snaps.Update(diffBlockHashB, diffRootB, diffBlockHashA, nil, accountsB, nil); err != nil { + t.Errorf("failed to create diff layer B: %v", err) + } + // Create diff layer C containing account 0xa3 + // The bloom filter should contain 0xa2 and 0xa3 + if err := snaps.Update(diffBlockHashC, diffRootC, diffBlockHashB, nil, accountsC, nil); err != nil { + t.Errorf("failed to create diff layer C: %v", err) + } + + if err := snaps.Flatten(diffBlockHashB); err != nil { + t.Errorf("failed to flattten diff block A: %v", err) + } + snap := snaps.Snapshot(diffRootC) + if _, err := snap.Account(addrA); err != nil { + t.Errorf("expected account to exist: %v", err) + } +} + +func TestRebloomOnFlatten(t *testing.T) { + // Create diff layers, including a level with two children, then flatten + // the layers and assert that the bloom filters are being updated correctly. + // + // Each layer will add an account which will be in the blooms for every + // following difflayer. No accesses would need to touch disk. Layers C and D + // should have all addrs in their blooms except for each others. + // + // After flattening A into the root, the remaining blooms should no longer + // have addrA but should retain all the others. + // + // After flattening B into A, blooms C and D should contain only their own + // addrs. + // + // Initial Root (diskLayer) + // | + // A <- First diffLayer. Adds addrA + // | + // B <- Second diffLayer. Adds addrB + // / \ + // Adds addrC -> C D <- Adds addrD + + var ( + baseRoot = common.HexToHash("0xff01") + baseBlockHash = common.HexToHash("0x01") + diffRootA = common.HexToHash("0xff02") + diffBlockHashA = common.HexToHash("0x02") + diffRootB = common.HexToHash("0xff03") + diffBlockHashB = common.HexToHash("0x03") + diffRootC = common.HexToHash("0xff04") + diffBlockHashC = common.HexToHash("0x04") + diffRootD = common.HexToHash("0xff05") + diffBlockHashD = common.HexToHash("0x05") + ) + + snaps := NewTestTree(rawdb.NewMemoryDatabase(), baseBlockHash, baseRoot) + addrA := randomHash() + accountsA := map[common.Hash][]byte{ + addrA: randomAccount(), + } + addrB := randomHash() + accountsB := map[common.Hash][]byte{ + addrB: randomAccount(), + } + addrC := randomHash() + accountsC := map[common.Hash][]byte{ + addrC: randomAccount(), + } + addrD := randomHash() + accountsD := map[common.Hash][]byte{ + addrD: randomAccount(), + } + + // Build the tree + if err := snaps.Update(diffBlockHashA, diffRootA, baseBlockHash, nil, accountsA, nil); err != nil { + t.Errorf("failed to create diff layer A: %v", err) + } + if err := snaps.Update(diffBlockHashB, diffRootB, diffBlockHashA, nil, accountsB, nil); err != nil { + t.Errorf("failed to create diff layer B: %v", err) + } + if err := snaps.Update(diffBlockHashC, diffRootC, diffBlockHashB, nil, accountsC, nil); err != nil { + t.Errorf("failed to create diff layer C: %v", err) + } + if err := snaps.Update(diffBlockHashD, diffRootD, diffBlockHashB, nil, accountsD, nil); err != nil { + t.Errorf("failed to create diff layer D: %v", err) + } + + assertBlooms := func(snap Snapshot, hitsA, hitsB, hitsC, hitsD bool) { + dl, ok := snap.(*diffLayer) + if !ok { + t.Fatal("snapshot should be a diffLayer") + } + + if hitsA != dl.diffed.Contains(accountBloomHasher(addrA)) { + t.Errorf("expected bloom filter to return %t but got %t", hitsA, !hitsA) + } + + if hitsB != dl.diffed.Contains(accountBloomHasher(addrB)) { + t.Errorf("expected bloom filter to return %t but got %t", hitsB, !hitsB) + } + + if hitsC != dl.diffed.Contains(accountBloomHasher(addrC)) { + t.Errorf("expected bloom filter to return %t but got %t", hitsC, !hitsC) + } + + if hitsD != dl.diffed.Contains(accountBloomHasher(addrD)) { + t.Errorf("expected bloom filter to return %t but got %t", hitsD, !hitsD) + } + } + + // First check that each layer's bloom has all current and ancestor addrs, + // but no sibling-only addrs. + assertBlooms(snaps.Snapshot(diffRootB), true, true, false, false) + assertBlooms(snaps.Snapshot(diffRootC), true, true, true, false) + assertBlooms(snaps.Snapshot(diffRootD), true, true, false, true) + + // Flatten diffLayer A, making it a disk layer and trigger a rebloom on B, C + // and D. If we didn't rebloom, or didn't rebloom recursively, then blooms C + // and D would still think addrA was in the diff layers + snaps.verified = true // Bypass validation of junk data + if err := snaps.Flatten(diffBlockHashA); err != nil { + t.Errorf("failed to flattten diff block A: %v", err) + } + + // Check that no blooms still have addrA, but they have all the others + assertBlooms(snaps.Snapshot(diffRootB), false, true, false, false) + assertBlooms(snaps.Snapshot(diffRootC), false, true, true, false) + assertBlooms(snaps.Snapshot(diffRootD), false, true, false, true) + + // Flatten diffLayer B, making it a disk layer and trigger a rebloom on C + // and D. If we didn't rebloom, or didn't rebloom recursively, then blooms C + // and D would still think addrB was in the diff layers + if err := snaps.Flatten(diffBlockHashB); err != nil { + t.Errorf("failed to flattten diff block A: %v", err) + } + + // Blooms C and D should now have only their own addrs + assertBlooms(snaps.Snapshot(diffRootC), false, false, true, false) + assertBlooms(snaps.Snapshot(diffRootD), false, false, false, true) +} + +// TestReadStateDuringFlattening tests the scenario that, during the +// bottom diff layers are merging which tags these as stale, the read +// happens via a pre-created top snapshot layer which tries to access +// the state in these stale layers. Ensure this read can retrieve the +// right state back(block until the flattening is finished) instead of +// an unexpected error(snapshot layer is stale). +func TestReadStateDuringFlattening(t *testing.T) { + // setAccount is a helper to construct a random account entry and assign it to + // an account slot in a snapshot + setAccount := func(accKey string) map[common.Hash][]byte { + return map[common.Hash][]byte{ + common.HexToHash(accKey): randomAccount(), + } + } + + var ( + baseRoot = common.HexToHash("0xff01") + baseBlockHash = common.HexToHash("0x01") + diffRootA = common.HexToHash("0xff02") + diffBlockHashA = common.HexToHash("0x02") + diffRootB = common.HexToHash("0xff03") + diffBlockHashB = common.HexToHash("0x03") + diffRootC = common.HexToHash("0xff04") + diffBlockHashC = common.HexToHash("0x04") + ) + + snaps := NewTestTree(rawdb.NewMemoryDatabase(), baseBlockHash, baseRoot) + + // 4 layers in total, 3 diff layers and 1 disk layers + snaps.Update(diffBlockHashA, diffRootA, baseBlockHash, nil, setAccount("0xa1"), nil) + snaps.Update(diffBlockHashB, diffRootB, diffBlockHashA, nil, setAccount("0xa2"), nil) + snaps.Update(diffBlockHashC, diffRootC, diffBlockHashB, nil, setAccount("0xa3"), nil) + + // Obtain the topmost snapshot handler for state accessing + snap := snaps.Snapshot(diffRootC) + + // Register the testing hook to access the state after flattening + result := make(chan *Account) + snaps.onFlatten = func() { + // Spin up a thread to read the account from the pre-created + // snapshot handler. It's expected to be blocked. + go func() { + account, _ := snap.Account(common.HexToHash("0xa1")) + result <- account + }() + select { + case res := <-result: + t.Fatalf("Unexpected return %v", res) + case <-time.NewTimer(time.Millisecond * 300).C: + } + } + // Flatten the first diff block, which will mark the bottom-most layer as stale. + snaps.Flatten(diffBlockHashA) + select { + case account := <-result: + if account == nil { + t.Fatal("Failed to retrieve account") + } + case <-time.NewTimer(time.Millisecond * 300).C: + t.Fatal("Unexpected blocker") + } +} diff --git a/core/state/snapshot/sort.go b/core/state/snapshot/sort.go new file mode 100644 index 0000000000..6254d37943 --- /dev/null +++ b/core/state/snapshot/sort.go @@ -0,0 +1,46 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + + "github.com/ethereum/go-ethereum/common" +) + +// hashes is a helper to implement sort.Interface. +type hashes []common.Hash + +// Len is the number of elements in the collection. +func (hs hashes) Len() int { return len(hs) } + +// Less reports whether the element with index i should sort before the element +// with index j. +func (hs hashes) Less(i, j int) bool { return bytes.Compare(hs[i][:], hs[j][:]) < 0 } + +// Swap swaps the elements with indexes i and j. +func (hs hashes) Swap(i, j int) { hs[i], hs[j] = hs[j], hs[i] } diff --git a/core/state/snapshot/wipe.go b/core/state/snapshot/wipe.go new file mode 100644 index 0000000000..8d69ce1fd2 --- /dev/null +++ b/core/state/snapshot/wipe.go @@ -0,0 +1,136 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "bytes" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +// wipeSnapshot starts a goroutine to iterate over the entire key-value database +// and delete all the data associated with the snapshot (accounts, storage, +// metadata). After all is done, the snapshot range of the database is compacted +// to free up unused data blocks. +func wipeSnapshot(db ethdb.KeyValueStore, full bool) chan struct{} { + // Wipe the snapshot root marker synchronously + if full { + rawdb.DeleteSnapshotBlockHash(db) + rawdb.DeleteSnapshotRoot(db) + } + // Wipe everything else asynchronously + wiper := make(chan struct{}, 1) + go func() { + if err := wipeContent(db); err != nil { + log.Error("Failed to wipe state snapshot", "err", err) // Database close will trigger this + return + } + close(wiper) + }() + return wiper +} + +// wipeContent iterates over the entire key-value database and deletes all the +// data associated with the snapshot (accounts, storage), but not the root hash +// as the wiper is meant to run on a background thread but the root needs to be +// removed in sync to avoid data races. After all is done, the snapshot range of +// the database is compacted to free up unused data blocks. +func wipeContent(db ethdb.KeyValueStore) error { + if err := wipeKeyRange(db, "accounts", rawdb.SnapshotAccountPrefix, nil, nil, len(rawdb.SnapshotAccountPrefix)+common.HashLength, true); err != nil { + return err + } + if err := wipeKeyRange(db, "storage", rawdb.SnapshotStoragePrefix, nil, nil, len(rawdb.SnapshotStoragePrefix)+2*common.HashLength, true); err != nil { + return err + } + + return nil +} + +// wipeKeyRange deletes a range of keys from the database starting with prefix +// and having a specific total key length. The start and limit is optional for +// specifying a particular key range for deletion. +// +// Origin is included for wiping and limit is excluded if they are specified. +func wipeKeyRange(db ethdb.KeyValueStore, kind string, prefix []byte, origin []byte, limit []byte, keylen int, report bool) error { + // Batch deletions together to avoid holding an iterator for too long + var ( + batch = db.NewBatch() + items int + ) + // Iterate over the key-range and delete all of them + start, logged := time.Now(), time.Now() + + it := db.NewIterator(prefix, origin) + var stop []byte + if limit != nil { + stop = append(prefix, limit...) + } + for it.Next() { + // Skip any keys with the correct prefix but wrong length (trie nodes) + key := it.Key() + if !bytes.HasPrefix(key, prefix) { + break + } + if len(key) != keylen { + continue + } + if stop != nil && bytes.Compare(key, stop) >= 0 { + break + } + // Delete the key and periodically recreate the batch and iterator + batch.Delete(key) + items++ + + if items%10000 == 0 { + // Batch too large (or iterator too long lived, flush and recreate) + it.Release() + if err := batch.Write(); err != nil { + return err + } + batch.Reset() + seekPos := key[len(prefix):] + it = db.NewIterator(prefix, seekPos) + + if time.Since(logged) > 8*time.Second && report { + log.Info("Deleting state snapshot leftovers", "kind", kind, "wiped", items, "elapsed", common.PrettyDuration(time.Since(start))) + logged = time.Now() + } + } + } + it.Release() + if err := batch.Write(); err != nil { + return err + } + if report { + log.Info("Deleted state snapshot leftovers", "kind", kind, "wiped", items, "elapsed", common.PrettyDuration(time.Since(start))) + } + return nil +} diff --git a/core/state/snapshot/wipe_test.go b/core/state/snapshot/wipe_test.go new file mode 100644 index 0000000000..009e1d2e1d --- /dev/null +++ b/core/state/snapshot/wipe_test.go @@ -0,0 +1,141 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package snapshot + +import ( + "math/rand" + "testing" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" +) + +// Tests that given a database with random data content, all parts of a snapshot +// can be crrectly wiped without touching anything else. +func TestWipe(t *testing.T) { + // Create a database with some random snapshot data + db := memorydb.New() + + for i := 0; i < 128; i++ { + account := randomHash() + rawdb.WriteAccountSnapshot(db, account, randomHash().Bytes()) + for j := 0; j < 1024; j++ { + rawdb.WriteStorageSnapshot(db, account, randomHash(), randomHash().Bytes()) + } + } + rawdb.WriteSnapshotBlockHash(db, randomHash()) + rawdb.WriteSnapshotRoot(db, randomHash()) + + // Add some random non-snapshot data too to make wiping harder + for i := 0; i < 65536; i++ { + // Generate a key that's the wrong length for a state snapshot item + var keysize int + for keysize == 0 || keysize == 32 || keysize == 64 { + keysize = 8 + rand.Intn(64) // +8 to ensure we will "never" randomize duplicates + } + // Randomize the suffix, dedup and inject it under the snapshot namespace + keysuffix := make([]byte, keysize) + rand.Read(keysuffix) + + if rand.Int31n(2) == 0 { + db.Put(append(rawdb.SnapshotAccountPrefix, keysuffix...), randomHash().Bytes()) + } else { + db.Put(append(rawdb.SnapshotStoragePrefix, keysuffix...), randomHash().Bytes()) + } + } + // Sanity check that all the keys are present + var items int + + it := db.NewIterator(rawdb.SnapshotAccountPrefix, nil) + defer it.Release() + + for it.Next() { + key := it.Key() + if len(key) == len(rawdb.SnapshotAccountPrefix)+common.HashLength { + items++ + } + } + it = db.NewIterator(rawdb.SnapshotStoragePrefix, nil) + defer it.Release() + + for it.Next() { + key := it.Key() + if len(key) == len(rawdb.SnapshotStoragePrefix)+2*common.HashLength { + items++ + } + } + if items != 128+128*1024 { + t.Fatalf("snapshot size mismatch: have %d, want %d", items, 128+128*1024) + } + if hash := rawdb.ReadSnapshotBlockHash(db); hash == (common.Hash{}) { + t.Errorf("snapshot block hash marker mismatch: have %#x, want ", hash) + } + if hash := rawdb.ReadSnapshotRoot(db); hash == (common.Hash{}) { + t.Errorf("snapshot block root marker mismatch: have %#x, want ", hash) + } + // Wipe all snapshot entries from the database + <-wipeSnapshot(db, true) + + // Iterate over the database end ensure no snapshot information remains + it = db.NewIterator(rawdb.SnapshotAccountPrefix, nil) + defer it.Release() + + for it.Next() { + key := it.Key() + if len(key) == len(rawdb.SnapshotAccountPrefix)+common.HashLength { + t.Errorf("snapshot entry remained after wipe: %x", key) + } + } + it = db.NewIterator(rawdb.SnapshotStoragePrefix, nil) + defer it.Release() + + for it.Next() { + key := it.Key() + if len(key) == len(rawdb.SnapshotStoragePrefix)+2*common.HashLength { + t.Errorf("snapshot entry remained after wipe: %x", key) + } + } + if hash := rawdb.ReadSnapshotBlockHash(db); hash != (common.Hash{}) { + t.Errorf("snapshot block hash marker remained after wipe: %#x", hash) + } + if hash := rawdb.ReadSnapshotRoot(db); hash != (common.Hash{}) { + t.Errorf("snapshot block root marker remained after wipe: %#x", hash) + } + // Iterate over the database and ensure miscellaneous items are present + items = 0 + + it = db.NewIterator(nil, nil) + defer it.Release() + + for it.Next() { + items++ + } + if items != 65536 { + t.Fatalf("misc item count mismatch: have %d, want %d", items, 65536) + } +} diff --git a/core/state/state_object.go b/core/state/state_object.go new file mode 100644 index 0000000000..99183c4031 --- /dev/null +++ b/core/state/state_object.go @@ -0,0 +1,568 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "bytes" + "fmt" + "io" + "math/big" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/metrics" + "github.com/ethereum/go-ethereum/rlp" +) + +var emptyCodeHash = crypto.Keccak256(nil) + +type Code []byte + +func (c Code) String() string { + return string(c) // strings.Join(Disassemble(c), " ") +} + +type Storage map[common.Hash]common.Hash + +func (s Storage) String() (str string) { + for key, value := range s { + str += fmt.Sprintf("%X : %X\n", key, value) + } + + return +} + +func (s Storage) Copy() Storage { + cpy := make(Storage) + for key, value := range s { + cpy[key] = value + } + + return cpy +} + +// stateObject represents an Ethereum account which is being modified. +// +// The usage pattern is as follows: +// First you need to obtain a state object. +// Account values can be accessed and modified through the object. +// Finally, call CommitTrie to write the modified storage trie into a database. +type stateObject struct { + address common.Address + addrHash common.Hash // hash of ethereum address of the account + // dataLock protects the [data] field to prevent a race condition + // in the transaction pool tests. TODO remove after re-implementing + // tx pool to be synchronous. + dataLock sync.RWMutex + data types.StateAccount + db *StateDB + + // DB error. + // State objects are used by the consensus core and VM which are + // unable to deal with database-level errors. Any error that occurs + // during a database read is memoized here and will eventually be returned + // by StateDB.Commit. + dbErr error + + // Write caches. + trie Trie // storage trie, which becomes non-nil on first access + code Code // contract bytecode, which gets set when code is loaded + + originStorage Storage // Storage cache of original entries to dedup rewrites, reset for every transaction + pendingStorage Storage // Storage entries that need to be flushed to disk, at the end of an entire block + dirtyStorage Storage // Storage entries that have been modified in the current transaction execution + fakeStorage Storage // Fake storage which constructed by caller for debugging purpose. + + // Cache flags. + // When an object is marked suicided it will be delete from the trie + // during the "update" phase of the state transition. + dirtyCode bool // true if the code was updated + suicided bool + deleted bool +} + +// empty returns whether the account is considered empty. +func (s *stateObject) empty() bool { + return s.data.Nonce == 0 && s.data.Balance.Sign() == 0 && bytes.Equal(s.data.CodeHash, emptyCodeHash) +} + +// newObject creates a state object. +func newObject(db *StateDB, address common.Address, data types.StateAccount) *stateObject { + if data.Balance == nil { + data.Balance = new(big.Int) + } + if data.CodeHash == nil { + data.CodeHash = emptyCodeHash + } + if data.Root == (common.Hash{}) { + data.Root = emptyRoot + } + return &stateObject{ + db: db, + address: address, + addrHash: crypto.Keccak256Hash(address[:]), + data: data, + originStorage: make(Storage), + pendingStorage: make(Storage), + dirtyStorage: make(Storage), + } +} + +// EncodeRLP implements rlp.Encoder. +func (s *stateObject) EncodeRLP(w io.Writer) error { + return rlp.Encode(w, &s.data) +} + +// setError remembers the first non-nil error it is called with. +func (s *stateObject) setError(err error) { + if s.dbErr == nil { + s.dbErr = err + } +} + +func (s *stateObject) markSuicided() { + s.suicided = true +} + +func (s *stateObject) touch() { + s.db.journal.append(touchChange{ + account: &s.address, + }) + if s.address == ripemd { + // Explicitly put it in the dirty-cache, which is otherwise generated from + // flattened journals. + s.db.journal.dirty(s.address) + } +} + +func (s *stateObject) getTrie(db Database) Trie { + if s.trie == nil { + // Try fetching from prefetcher first + // We don't prefetch empty tries + if s.data.Root != emptyRoot && s.db.prefetcher != nil { + // When the miner is creating the pending state, there is no + // prefetcher + s.trie = s.db.prefetcher.trie(s.data.Root) + } + if s.trie == nil { + var err error + s.trie, err = db.OpenStorageTrie(s.addrHash, s.data.Root) + if err != nil { + s.trie, _ = db.OpenStorageTrie(s.addrHash, common.Hash{}) + s.setError(fmt.Errorf("can't create storage trie: %v", err)) + } + } + } + return s.trie +} + +// GetState retrieves a value from the account storage trie. +func (s *stateObject) GetState(db Database, key common.Hash) common.Hash { + // If the fake storage is set, only lookup the state here(in the debugging mode) + if s.fakeStorage != nil { + return s.fakeStorage[key] + } + // If we have a dirty value for this state entry, return it + value, dirty := s.dirtyStorage[key] + if dirty { + return value + } + // Otherwise return the entry's original value + return s.GetCommittedState(db, key) +} + +// GetCommittedState retrieves a value from the committed account storage trie. +func (s *stateObject) GetCommittedState(db Database, key common.Hash) common.Hash { + // If the fake storage is set, only lookup the state here(in the debugging mode) + if s.fakeStorage != nil { + return s.fakeStorage[key] + } + // If we have a pending write or clean cached, return that + if value, pending := s.pendingStorage[key]; pending { + return value + } + if value, cached := s.originStorage[key]; cached { + return value + } + // If no live objects are available, attempt to use snapshots + var ( + enc []byte + err error + meter *time.Duration + ) + readStart := time.Now() + if metrics.EnabledExpensive { + // If the snap is 'under construction', the first lookup may fail. If that + // happens, we don't want to double-count the time elapsed. Thus this + // dance with the metering. + defer func() { + if meter != nil { + *meter += time.Since(readStart) + } + }() + } + if s.db.snap != nil { + if metrics.EnabledExpensive { + meter = &s.db.SnapshotStorageReads + } + // If the object was destructed in *this* block (and potentially resurrected), + // the storage has been cleared out, and we should *not* consult the previous + // snapshot about any storage values. The only possible alternatives are: + // 1) resurrect happened, and new slot values were set -- those should + // have been handles via pendingStorage above. + // 2) we don't have new values, and can deliver empty response back + if _, destructed := s.db.snapDestructs[s.addrHash]; destructed { + return common.Hash{} + } + enc, err = s.db.snap.Storage(s.addrHash, crypto.Keccak256Hash(key.Bytes())) + } + // If the snapshot is unavailable or reading from it fails, load from the database. + if s.db.snap == nil || err != nil { + if meter != nil { + // If we already spent time checking the snapshot, account for it + // and reset the readStart + *meter += time.Since(readStart) + readStart = time.Now() + } + if metrics.EnabledExpensive { + meter = &s.db.StorageReads + } + if enc, err = s.getTrie(db).TryGet(key.Bytes()); err != nil { + s.setError(err) + return common.Hash{} + } + } + var value common.Hash + if len(enc) > 0 { + _, content, _, err := rlp.Split(enc) + if err != nil { + s.setError(err) + } + value.SetBytes(content) + } + s.originStorage[key] = value + return value +} + +// SetState updates a value in account storage. +func (s *stateObject) SetState(db Database, key, value common.Hash) { + // If the fake storage is set, put the temporary state update here. + if s.fakeStorage != nil { + s.fakeStorage[key] = value + return + } + // If the new value is the same as old, don't set + prev := s.GetState(db, key) + if prev == value { + return + } + // New value is different, update and journal the change + s.db.journal.append(storageChange{ + account: &s.address, + key: key, + prevalue: prev, + }) + s.setState(key, value) +} + +// SetStorage replaces the entire state storage with the given one. +// +// After this function is called, all original state will be ignored and state +// lookup only happens in the fake state storage. +// +// Note this function should only be used for debugging purpose. +func (s *stateObject) SetStorage(storage map[common.Hash]common.Hash) { + // Allocate fake storage if it's nil. + if s.fakeStorage == nil { + s.fakeStorage = make(Storage) + } + for key, value := range storage { + s.fakeStorage[key] = value + } + // Don't bother journal since this function should only be used for + // debugging and the `fake` storage won't be committed to database. +} + +func (s *stateObject) setState(key, value common.Hash) { + s.dirtyStorage[key] = value +} + +// finalise moves all dirty storage slots into the pending area to be hashed or +// committed later. It is invoked at the end of every transaction. +func (s *stateObject) finalise(prefetch bool) { + slotsToPrefetch := make([][]byte, 0, len(s.dirtyStorage)) + for key, value := range s.dirtyStorage { + s.pendingStorage[key] = value + if value != s.originStorage[key] { + slotsToPrefetch = append(slotsToPrefetch, common.CopyBytes(key[:])) // Copy needed for closure + } + } + if s.db.prefetcher != nil && prefetch && len(slotsToPrefetch) > 0 && s.data.Root != emptyRoot { + s.db.prefetcher.prefetch(s.data.Root, slotsToPrefetch) + } + if len(s.dirtyStorage) > 0 { + s.dirtyStorage = make(Storage) + } +} + +// updateTrie writes cached storage modifications into the object's storage trie. +// It will return nil if the trie has not been loaded and no changes have been made +func (s *stateObject) updateTrie(db Database) Trie { + // Make sure all dirty slots are finalized into the pending storage area + s.finalise(false) // Don't prefetch anymore, pull directly if need be + if len(s.pendingStorage) == 0 { + return s.trie + } + // Track the amount of time wasted on updating the storage trie + if metrics.EnabledExpensive { + defer func(start time.Time) { s.db.StorageUpdates += time.Since(start) }(time.Now()) + } + // The snapshot storage map for the object + var storage map[common.Hash][]byte + // Insert all the pending updates into the trie + tr := s.getTrie(db) + hasher := s.db.hasher + + usedStorage := make([][]byte, 0, len(s.pendingStorage)) + for key, value := range s.pendingStorage { + // Skip noop changes, persist actual changes + if value == s.originStorage[key] { + continue + } + s.originStorage[key] = value + + var v []byte + if (value == common.Hash{}) { + s.setError(tr.TryDelete(key[:])) + s.db.StorageDeleted += 1 + } else { + // Encoding []byte cannot fail, ok to ignore the error. + v, _ = rlp.EncodeToBytes(common.TrimLeftZeroes(value[:])) + s.setError(tr.TryUpdate(key[:], v)) + s.db.StorageUpdated += 1 + } + // If state snapshotting is active, cache the data til commit + if s.db.snap != nil { + if storage == nil { + // Retrieve the old storage map, if available, create a new one otherwise + if storage = s.db.snapStorage[s.addrHash]; storage == nil { + storage = make(map[common.Hash][]byte) + s.db.snapStorage[s.addrHash] = storage + } + } + storage[crypto.HashData(hasher, key[:])] = v // v will be nil if it's deleted + } + usedStorage = append(usedStorage, common.CopyBytes(key[:])) // Copy needed for closure + } + if s.db.prefetcher != nil { + s.db.prefetcher.used(s.data.Root, usedStorage) + } + if len(s.pendingStorage) > 0 { + s.pendingStorage = make(Storage) + } + return tr +} + +// UpdateRoot sets the trie root to the current root hash of +func (s *stateObject) updateRoot(db Database) { + // If nothing changed, don't bother with hashing anything + if s.updateTrie(db) == nil { + return + } + // Track the amount of time wasted on hashing the storage trie + if metrics.EnabledExpensive { + defer func(start time.Time) { s.db.StorageHashes += time.Since(start) }(time.Now()) + } + s.data.Root = s.trie.Hash() +} + +// CommitTrie the storage trie of the object to db. +// This updates the trie root. +func (s *stateObject) CommitTrie(db Database) (int, error) { + // If nothing changed, don't bother with hashing anything + if s.updateTrie(db) == nil { + return 0, nil + } + if s.dbErr != nil { + return 0, s.dbErr + } + // Track the amount of time wasted on committing the storage trie + if metrics.EnabledExpensive { + defer func(start time.Time) { s.db.StorageCommits += time.Since(start) }(time.Now()) + } + root, committed, err := s.trie.Commit(nil) + if err == nil { + s.data.Root = root + } + return committed, err +} + +// AddBalance adds amount to s's balance. +// It is used to add funds to the destination account of a transfer. +func (s *stateObject) AddBalance(amount *big.Int) { + // EIP161: We must check emptiness for the objects such that the account + // clearing (0,0,0 objects) can take effect. + if amount.Sign() == 0 { + if s.empty() { + s.touch() + } + return + } + s.SetBalance(new(big.Int).Add(s.Balance(), amount)) +} + +// SubBalance removes amount from s's balance. +// It is used to remove funds from the origin account of a transfer. +func (s *stateObject) SubBalance(amount *big.Int) { + if amount.Sign() == 0 { + return + } + s.SetBalance(new(big.Int).Sub(s.Balance(), amount)) +} + +func (s *stateObject) SetBalance(amount *big.Int) { + s.db.journal.append(balanceChange{ + account: &s.address, + prev: new(big.Int).Set(s.data.Balance), + }) + s.setBalance(amount) +} + +func (s *stateObject) setBalance(amount *big.Int) { + s.data.Balance = amount +} + +func (s *stateObject) deepCopy(db *StateDB) *stateObject { + stateObject := newObject(db, s.address, s.data) + if s.trie != nil { + stateObject.trie = db.db.CopyTrie(s.trie) + } + stateObject.code = s.code + stateObject.dirtyStorage = s.dirtyStorage.Copy() + stateObject.originStorage = s.originStorage.Copy() + stateObject.pendingStorage = s.pendingStorage.Copy() + stateObject.suicided = s.suicided + stateObject.dirtyCode = s.dirtyCode + stateObject.deleted = s.deleted + return stateObject +} + +// +// Attribute accessors +// + +// Returns the address of the contract/account +func (s *stateObject) Address() common.Address { + return s.address +} + +// Code returns the contract code associated with this object, if any. +func (s *stateObject) Code(db Database) []byte { + if s.code != nil { + return s.code + } + if bytes.Equal(s.CodeHash(), emptyCodeHash) { + return nil + } + code, err := db.ContractCode(s.addrHash, common.BytesToHash(s.CodeHash())) + if err != nil { + s.setError(fmt.Errorf("can't load code hash %x: %v", s.CodeHash(), err)) + } + s.code = code + return code +} + +// CodeSize returns the size of the contract code associated with this object, +// or zero if none. This method is an almost mirror of Code, but uses a cache +// inside the database to avoid loading codes seen recently. +func (s *stateObject) CodeSize(db Database) int { + if s.code != nil { + return len(s.code) + } + if bytes.Equal(s.CodeHash(), emptyCodeHash) { + return 0 + } + size, err := db.ContractCodeSize(s.addrHash, common.BytesToHash(s.CodeHash())) + if err != nil { + s.setError(fmt.Errorf("can't load code size %x: %v", s.CodeHash(), err)) + } + return size +} + +func (s *stateObject) SetCode(codeHash common.Hash, code []byte) { + prevcode := s.Code(s.db.db) + s.db.journal.append(codeChange{ + account: &s.address, + prevhash: s.CodeHash(), + prevcode: prevcode, + }) + s.setCode(codeHash, code) +} + +func (s *stateObject) setCode(codeHash common.Hash, code []byte) { + s.code = code + s.data.CodeHash = codeHash[:] + s.dirtyCode = true +} + +func (s *stateObject) SetNonce(nonce uint64) { + s.db.journal.append(nonceChange{ + account: &s.address, + prev: s.data.Nonce, + }) + s.setNonce(nonce) +} + +func (s *stateObject) setNonce(nonce uint64) { + s.dataLock.Lock() + defer s.dataLock.Unlock() + s.data.Nonce = nonce +} + +func (s *stateObject) CodeHash() []byte { + return s.data.CodeHash +} + +func (s *stateObject) Balance() *big.Int { + return s.data.Balance +} + +func (s *stateObject) Nonce() uint64 { + s.dataLock.RLock() + defer s.dataLock.RUnlock() + return s.data.Nonce +} + +// Never called, but must be present to allow stateObject to be used +// as a vm.Account interface that also satisfies the vm.ContractRef +// interface. Interfaces are awesome. +func (s *stateObject) Value() *big.Int { + panic("Value on stateObject should never be called") +} diff --git a/core/state/state_test.go b/core/state/state_test.go new file mode 100644 index 0000000000..3bd69bcc54 --- /dev/null +++ b/core/state/state_test.go @@ -0,0 +1,44 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" +) + +type stateTest struct { + db ethdb.Database + state *StateDB +} + +func newStateTest() *stateTest { + db := rawdb.NewMemoryDatabase() + sdb, _ := New(common.Hash{}, NewDatabase(db), nil) + return &stateTest{db: db, state: sdb} +} diff --git a/core/state/statedb.go b/core/state/statedb.go new file mode 100644 index 0000000000..0f768bcd89 --- /dev/null +++ b/core/state/statedb.go @@ -0,0 +1,1073 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package state provides a caching layer atop the Ethereum state trie. +package state + +import ( + "errors" + "fmt" + "math/big" + "sort" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state/snapshot" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + "github.com/ethereum/go-ethereum/rlp" +) + +type revision struct { + id int + journalIndex int +} + +// emptyRoot is the known root hash of an empty trie. +var emptyRoot = common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421") + +type proofList [][]byte + +func (n *proofList) Put(key []byte, value []byte) error { + *n = append(*n, value) + return nil +} + +func (n *proofList) Delete(key []byte) error { + panic("not supported") +} + +// StateDB structs within the ethereum protocol are used to store anything +// within the merkle trie. StateDBs take care of caching and storing +// nested states. It's the general query interface to retrieve: +// * Contracts +// * Accounts +type StateDB struct { + db Database + prefetcher *triePrefetcher + originalRoot common.Hash // The pre-state root, before any changes were made + trie Trie + hasher crypto.KeccakState + + snap snapshot.Snapshot + snapDestructs map[common.Hash]struct{} + snapAccounts map[common.Hash][]byte + snapStorage map[common.Hash]map[common.Hash][]byte + + // This map holds 'live' objects, which will get modified while processing a state transition. + stateObjects map[common.Address]*stateObject + stateObjectsPending map[common.Address]struct{} // State objects finalized but not yet written to the trie + stateObjectsDirty map[common.Address]struct{} // State objects modified in the current execution + + // DB error. + // State objects are used by the consensus core and VM which are + // unable to deal with database-level errors. Any error that occurs + // during a database read is memoized here and will eventually be returned + // by StateDB.Commit. + dbErr error + + // The refund counter, also used by state transitioning. + refund uint64 + + thash common.Hash + txIndex int + logs map[common.Hash][]*types.Log + logSize uint + + preimages map[common.Hash][]byte + + // Per-transaction access list + accessList *accessList + + // Journal of state modifications. This is the backbone of + // Snapshot and RevertToSnapshot. + journal *journal + validRevisions []revision + nextRevisionId int + + // Measurements gathered during execution for debugging purposes + AccountReads time.Duration + AccountHashes time.Duration + AccountUpdates time.Duration + AccountCommits time.Duration + StorageReads time.Duration + StorageHashes time.Duration + StorageUpdates time.Duration + StorageCommits time.Duration + SnapshotAccountReads time.Duration + SnapshotStorageReads time.Duration + SnapshotCommits time.Duration + + AccountUpdated int + StorageUpdated int + AccountDeleted int + StorageDeleted int +} + +// New creates a new state from a given trie. +func New(root common.Hash, db Database, snaps *snapshot.Tree) (*StateDB, error) { + var snap snapshot.Snapshot + if snaps != nil { + snap = snaps.Snapshot(root) + } + return NewWithSnapshot(root, db, snap) +} + +// NewWithSnapshot creates a new state from a given trie with the specified [snap] +// If [snap] doesn't have the same root as [root], then NewWithSnapshot will return +// an error. If snap is nil, then no snapshot will be used and CommitWithSnapshot +// cannot be called on the returned StateDB. +func NewWithSnapshot(root common.Hash, db Database, snap snapshot.Snapshot) (*StateDB, error) { + tr, err := db.OpenTrie(root) + if err != nil { + return nil, err + } + sdb := &StateDB{ + db: db, + trie: tr, + originalRoot: root, + stateObjects: make(map[common.Address]*stateObject), + stateObjectsPending: make(map[common.Address]struct{}), + stateObjectsDirty: make(map[common.Address]struct{}), + logs: make(map[common.Hash][]*types.Log), + preimages: make(map[common.Hash][]byte), + journal: newJournal(), + accessList: newAccessList(), + hasher: crypto.NewKeccakState(), + } + if snap != nil { + if snap.Root() != root { + return nil, fmt.Errorf("cannot create new statedb for root: %s, using snapshot with mismatched root: %s", root, snap.Root().Hex()) + } + sdb.snap = snap + sdb.snapDestructs = make(map[common.Hash]struct{}) + sdb.snapAccounts = make(map[common.Hash][]byte) + sdb.snapStorage = make(map[common.Hash]map[common.Hash][]byte) + } + return sdb, nil +} + +// StartPrefetcher initializes a new trie prefetcher to pull in nodes from the +// state trie concurrently while the state is mutated so that when we reach the +// commit phase, most of the needed data is already hot. +func (s *StateDB) StartPrefetcher(namespace string) { + if s.prefetcher != nil { + s.prefetcher.close() + s.prefetcher = nil + } + if s.snap != nil { + s.prefetcher = newTriePrefetcher(s.db, s.originalRoot, namespace) + } +} + +// StopPrefetcher terminates a running prefetcher and reports any leftover stats +// from the gathered metrics. +func (s *StateDB) StopPrefetcher() { + if s.prefetcher != nil { + s.prefetcher.close() + s.prefetcher = nil + } +} + +// setError remembers the first non-nil error it is called with. +func (s *StateDB) setError(err error) { + if s.dbErr == nil { + s.dbErr = err + } +} + +func (s *StateDB) Error() error { + return s.dbErr +} + +func (s *StateDB) AddLog(log *types.Log) { + s.journal.append(addLogChange{txhash: s.thash}) + + log.TxHash = s.thash + log.TxIndex = uint(s.txIndex) + log.Index = s.logSize + s.logs[s.thash] = append(s.logs[s.thash], log) + s.logSize++ +} + +func (s *StateDB) GetLogs(hash common.Hash, blockHash common.Hash) []*types.Log { + logs := s.logs[hash] + for _, l := range logs { + l.BlockHash = blockHash + } + return logs +} + +func (s *StateDB) Logs() []*types.Log { + var logs []*types.Log + for _, lgs := range s.logs { + logs = append(logs, lgs...) + } + return logs +} + +// AddPreimage records a SHA3 preimage seen by the VM. +func (s *StateDB) AddPreimage(hash common.Hash, preimage []byte) { + if _, ok := s.preimages[hash]; !ok { + s.journal.append(addPreimageChange{hash: hash}) + pi := make([]byte, len(preimage)) + copy(pi, preimage) + s.preimages[hash] = pi + } +} + +// Preimages returns a list of SHA3 preimages that have been submitted. +func (s *StateDB) Preimages() map[common.Hash][]byte { + return s.preimages +} + +// AddRefund adds gas to the refund counter +func (s *StateDB) AddRefund(gas uint64) { + s.journal.append(refundChange{prev: s.refund}) + s.refund += gas +} + +// SubRefund removes gas from the refund counter. +// This method will panic if the refund counter goes below zero +func (s *StateDB) SubRefund(gas uint64) { + s.journal.append(refundChange{prev: s.refund}) + if gas > s.refund { + log.Warn("Setting refund to 0", "currentRefund", s.refund, "gas", gas) + s.refund = 0 + return + } + s.refund -= gas +} + +// Exist reports whether the given account address exists in the state. +// Notably this also returns true for suicided accounts. +func (s *StateDB) Exist(addr common.Address) bool { + return s.getStateObject(addr) != nil +} + +// Empty returns whether the state object is either non-existent +// or empty according to the EIP161 specification (balance = nonce = code = 0) +func (s *StateDB) Empty(addr common.Address) bool { + so := s.getStateObject(addr) + return so == nil || so.empty() +} + +// GetBalance retrieves the balance from the given address or 0 if object not found +func (s *StateDB) GetBalance(addr common.Address) *big.Int { + stateObject := s.getStateObject(addr) + if stateObject != nil { + return stateObject.Balance() + } + return new(big.Int).Set(common.Big0) +} + +func (s *StateDB) GetNonce(addr common.Address) uint64 { + stateObject := s.getStateObject(addr) + if stateObject != nil { + return stateObject.Nonce() + } + + return 0 +} + +// TxIndex returns the current transaction index set by Prepare. +func (s *StateDB) TxIndex() int { + return s.txIndex +} + +func (s *StateDB) GetCode(addr common.Address) []byte { + stateObject := s.getStateObject(addr) + if stateObject != nil { + return stateObject.Code(s.db) + } + return nil +} + +func (s *StateDB) GetCodeSize(addr common.Address) int { + stateObject := s.getStateObject(addr) + if stateObject != nil { + return stateObject.CodeSize(s.db) + } + return 0 +} + +func (s *StateDB) GetCodeHash(addr common.Address) common.Hash { + stateObject := s.getStateObject(addr) + if stateObject == nil { + return common.Hash{} + } + return common.BytesToHash(stateObject.CodeHash()) +} + +// GetState retrieves a value from the given account's storage trie. +func (s *StateDB) GetState(addr common.Address, hash common.Hash) common.Hash { + stateObject := s.getStateObject(addr) + if stateObject != nil { + return stateObject.GetState(s.db, hash) + } + return common.Hash{} +} + +// GetProof returns the Merkle proof for a given account. +func (s *StateDB) GetProof(addr common.Address) ([][]byte, error) { + return s.GetProofByHash(crypto.Keccak256Hash(addr.Bytes())) +} + +// GetProofByHash returns the Merkle proof for a given account. +func (s *StateDB) GetProofByHash(addrHash common.Hash) ([][]byte, error) { + var proof proofList + err := s.trie.Prove(addrHash[:], 0, &proof) + return proof, err +} + +// GetStorageProof returns the Merkle proof for given storage slot. +func (s *StateDB) GetStorageProof(a common.Address, key common.Hash) ([][]byte, error) { + var proof proofList + trie := s.StorageTrie(a) + if trie == nil { + return proof, errors.New("storage trie for requested address does not exist") + } + err := trie.Prove(crypto.Keccak256(key.Bytes()), 0, &proof) + return proof, err +} + +// GetCommittedState retrieves a value from the given account's committed storage trie. +func (s *StateDB) GetCommittedState(addr common.Address, hash common.Hash) common.Hash { + stateObject := s.getStateObject(addr) + if stateObject != nil { + return stateObject.GetCommittedState(s.db, hash) + } + return common.Hash{} +} + +// Database retrieves the low level database supporting the lower level trie ops. +func (s *StateDB) Database() Database { + return s.db +} + +// StorageTrie returns the storage trie of an account. +// The return value is a copy and is nil for non-existent accounts. +func (s *StateDB) StorageTrie(addr common.Address) Trie { + stateObject := s.getStateObject(addr) + if stateObject == nil { + return nil + } + cpy := stateObject.deepCopy(s) + cpy.updateTrie(s.db) + return cpy.getTrie(s.db) +} + +func (s *StateDB) HasSuicided(addr common.Address) bool { + stateObject := s.getStateObject(addr) + if stateObject != nil { + return stateObject.suicided + } + return false +} + +/* + * SETTERS + */ + +// AddBalance adds amount to the account associated with addr. +func (s *StateDB) AddBalance(addr common.Address, amount *big.Int) { + stateObject := s.GetOrNewStateObject(addr) + if stateObject != nil { + stateObject.AddBalance(amount) + } +} + +// SubBalance subtracts amount from the account associated with addr. +func (s *StateDB) SubBalance(addr common.Address, amount *big.Int) { + stateObject := s.GetOrNewStateObject(addr) + if stateObject != nil { + stateObject.SubBalance(amount) + } +} + +func (s *StateDB) SetBalance(addr common.Address, amount *big.Int) { + stateObject := s.GetOrNewStateObject(addr) + if stateObject != nil { + stateObject.SetBalance(amount) + } +} + +func (s *StateDB) SetNonce(addr common.Address, nonce uint64) { + stateObject := s.GetOrNewStateObject(addr) + if stateObject != nil { + stateObject.SetNonce(nonce) + } +} + +func (s *StateDB) SetCode(addr common.Address, code []byte) { + stateObject := s.GetOrNewStateObject(addr) + if stateObject != nil { + stateObject.SetCode(crypto.Keccak256Hash(code), code) + } +} + +func (s *StateDB) SetState(addr common.Address, key, value common.Hash) { + stateObject := s.GetOrNewStateObject(addr) + if stateObject != nil { + stateObject.SetState(s.db, key, value) + } +} + +// SetStorage replaces the entire storage for the specified account with given +// storage. This function should only be used for debugging. +func (s *StateDB) SetStorage(addr common.Address, storage map[common.Hash]common.Hash) { + stateObject := s.GetOrNewStateObject(addr) + if stateObject != nil { + stateObject.SetStorage(storage) + } +} + +// Suicide marks the given account as suicided. +// This clears the account balance. +// +// The account's state object is still available until the state is committed, +// getStateObject will return a non-nil account after Suicide. +func (s *StateDB) Suicide(addr common.Address) bool { + stateObject := s.getStateObject(addr) + if stateObject == nil { + return false + } + s.journal.append(suicideChange{ + account: &addr, + prev: stateObject.suicided, + prevbalance: new(big.Int).Set(stateObject.Balance()), + }) + stateObject.markSuicided() + stateObject.data.Balance = new(big.Int) + + return true +} + +// +// Setting, updating & deleting state object methods. +// + +// updateStateObject writes the given object to the trie. +func (s *StateDB) updateStateObject(obj *stateObject) { + // Track the amount of time wasted on updating the account from the trie + if metrics.EnabledExpensive { + defer func(start time.Time) { s.AccountUpdates += time.Since(start) }(time.Now()) + } + // Encode the account and update the account trie + addr := obj.Address() + if err := s.trie.TryUpdateAccount(addr[:], &obj.data); err != nil { + s.setError(fmt.Errorf("updateStateObject (%x) error: %v", addr[:], err)) + } + + // If state snapshotting is active, cache the data til commit. Note, this + // update mechanism is not symmetric to the deletion, because whereas it is + // enough to track account updates at commit time, deletions need tracking + // at transaction boundary level to ensure we capture state clearing. + if s.snap != nil { + s.snapAccounts[obj.addrHash] = snapshot.SlimAccountRLP(obj.data.Nonce, obj.data.Balance, obj.data.Root, obj.data.CodeHash) + } +} + +// deleteStateObject removes the given object from the state trie. +func (s *StateDB) deleteStateObject(obj *stateObject) { + // Track the amount of time wasted on deleting the account from the trie + if metrics.EnabledExpensive { + defer func(start time.Time) { s.AccountUpdates += time.Since(start) }(time.Now()) + } + // Delete the account from the trie + addr := obj.Address() + if err := s.trie.TryDelete(addr[:]); err != nil { + s.setError(fmt.Errorf("deleteStateObject (%x) error: %v", addr[:], err)) + } +} + +// getStateObject retrieves a state object given by the address, returning nil if +// the object is not found or was deleted in this execution context. If you need +// to differentiate between non-existent/just-deleted, use getDeletedStateObject. +func (s *StateDB) getStateObject(addr common.Address) *stateObject { + if obj := s.getDeletedStateObject(addr); obj != nil && !obj.deleted { + return obj + } + return nil +} + +// getDeletedStateObject is similar to getStateObject, but instead of returning +// nil for a deleted state object, it returns the actual object with the deleted +// flag set. This is needed by the state journal to revert to the correct s- +// destructed object instead of wiping all knowledge about the state object. +func (s *StateDB) getDeletedStateObject(addr common.Address) *stateObject { + // Prefer live objects if any is available + if obj := s.stateObjects[addr]; obj != nil { + return obj + } + // If no live objects are available, attempt to use snapshots + var ( + data *types.StateAccount + err error + ) + if s.snap != nil { + if metrics.EnabledExpensive { + defer func(start time.Time) { s.SnapshotAccountReads += time.Since(start) }(time.Now()) + } + var acc *snapshot.Account + if acc, err = s.snap.Account(crypto.HashData(s.hasher, addr.Bytes())); err == nil { + if acc == nil { + return nil + } + data = &types.StateAccount{ + Nonce: acc.Nonce, + Balance: acc.Balance, + CodeHash: acc.CodeHash, + Root: common.BytesToHash(acc.Root), + } + if len(data.CodeHash) == 0 { + data.CodeHash = emptyCodeHash + } + if data.Root == (common.Hash{}) { + data.Root = emptyRoot + } + } + } + // If snapshot unavailable or reading from it failed, load from the database + if s.snap == nil || err != nil { + if metrics.EnabledExpensive { + defer func(start time.Time) { s.AccountReads += time.Since(start) }(time.Now()) + } + enc, err := s.trie.TryGet(addr.Bytes()) + if err != nil { + s.setError(fmt.Errorf("getDeleteStateObject (%x) error: %v", addr.Bytes(), err)) + return nil + } + if len(enc) == 0 { + return nil + } + data = new(types.StateAccount) + if err := rlp.DecodeBytes(enc, data); err != nil { + log.Error("Failed to decode state object", "addr", addr, "err", err) + return nil + } + } + // Insert into the live set + obj := newObject(s, addr, *data) + s.setStateObject(obj) + return obj +} + +func (s *StateDB) setStateObject(object *stateObject) { + s.stateObjects[object.Address()] = object +} + +// GetOrNewStateObject retrieves a state object or create a new state object if nil. +func (s *StateDB) GetOrNewStateObject(addr common.Address) *stateObject { + stateObject := s.getStateObject(addr) + if stateObject == nil { + stateObject, _ = s.createObject(addr) + } + return stateObject +} + +// createObject creates a new state object. If there is an existing account with +// the given address, it is overwritten and returned as the second return value. +func (s *StateDB) createObject(addr common.Address) (newobj, prev *stateObject) { + prev = s.getDeletedStateObject(addr) // Note, prev might have been deleted, we need that! + + var prevdestruct bool + if s.snap != nil && prev != nil { + _, prevdestruct = s.snapDestructs[prev.addrHash] + if !prevdestruct { + s.snapDestructs[prev.addrHash] = struct{}{} + } + } + newobj = newObject(s, addr, types.StateAccount{}) + if prev == nil { + s.journal.append(createObjectChange{account: &addr}) + } else { + s.journal.append(resetObjectChange{prev: prev, prevdestruct: prevdestruct}) + } + s.setStateObject(newobj) + if prev != nil && !prev.deleted { + return newobj, prev + } + return newobj, nil +} + +// CreateAccount explicitly creates a state object. If a state object with the address +// already exists the balance is carried over to the new account. +// +// CreateAccount is called during the EVM CREATE operation. The situation might arise that +// a contract does the following: +// +// 1. sends funds to sha(account ++ (nonce + 1)) +// 2. tx_create(sha(account ++ nonce)) (note that this gets the address of 1) +// +// Carrying over the balance ensures that Ether doesn't disappear. +func (s *StateDB) CreateAccount(addr common.Address) { + newObj, prev := s.createObject(addr) + if prev != nil { + newObj.setBalance(prev.data.Balance) + } +} + +func (db *StateDB) ForEachStorage(addr common.Address, cb func(key, value common.Hash) bool) error { + so := db.getStateObject(addr) + if so == nil { + return nil + } + it := trie.NewIterator(so.getTrie(db.db).NodeIterator(nil)) + + for it.Next() { + key := common.BytesToHash(db.trie.GetKey(it.Key)) + if value, dirty := so.dirtyStorage[key]; dirty { + if !cb(key, value) { + return nil + } + continue + } + + if len(it.Value) > 0 { + _, content, _, err := rlp.Split(it.Value) + if err != nil { + return err + } + if !cb(key, common.BytesToHash(content)) { + return nil + } + } + } + return nil +} + +// Copy creates a deep, independent copy of the state. +// Snapshots of the copied state cannot be applied to the copy. +func (s *StateDB) Copy() *StateDB { + // Copy all the basic fields, initialize the memory ones + state := &StateDB{ + db: s.db, + trie: s.db.CopyTrie(s.trie), + stateObjects: make(map[common.Address]*stateObject, len(s.journal.dirties)), + stateObjectsPending: make(map[common.Address]struct{}, len(s.stateObjectsPending)), + stateObjectsDirty: make(map[common.Address]struct{}, len(s.journal.dirties)), + refund: s.refund, + logs: make(map[common.Hash][]*types.Log, len(s.logs)), + logSize: s.logSize, + preimages: make(map[common.Hash][]byte, len(s.preimages)), + journal: newJournal(), + hasher: crypto.NewKeccakState(), + } + // Copy the dirty states, logs, and preimages + for addr := range s.journal.dirties { + // As documented [here](https://github.com/ethereum/go-ethereum/pull/16485#issuecomment-380438527), + // and in the Finalise-method, there is a case where an object is in the journal but not + // in the stateObjects: OOG after touch on ripeMD prior to Byzantium. Thus, we need to check for + // nil + if object, exist := s.stateObjects[addr]; exist { + // Even though the original object is dirty, we are not copying the journal, + // so we need to make sure that anyside effect the journal would have caused + // during a commit (or similar op) is already applied to the copy. + state.stateObjects[addr] = object.deepCopy(state) + + state.stateObjectsDirty[addr] = struct{}{} // Mark the copy dirty to force internal (code/state) commits + state.stateObjectsPending[addr] = struct{}{} // Mark the copy pending to force external (account) commits + } + } + // Above, we don't copy the actual journal. This means that if the copy is copied, the + // loop above will be a no-op, since the copy's journal is empty. + // Thus, here we iterate over stateObjects, to enable copies of copies + for addr := range s.stateObjectsPending { + if _, exist := state.stateObjects[addr]; !exist { + state.stateObjects[addr] = s.stateObjects[addr].deepCopy(state) + } + state.stateObjectsPending[addr] = struct{}{} + } + for addr := range s.stateObjectsDirty { + if _, exist := state.stateObjects[addr]; !exist { + state.stateObjects[addr] = s.stateObjects[addr].deepCopy(state) + } + state.stateObjectsDirty[addr] = struct{}{} + } + for hash, logs := range s.logs { + cpy := make([]*types.Log, len(logs)) + for i, l := range logs { + cpy[i] = new(types.Log) + *cpy[i] = *l + } + state.logs[hash] = cpy + } + for hash, preimage := range s.preimages { + state.preimages[hash] = preimage + } + // Do we need to copy the access list? In practice: No. At the start of a + // transaction, the access list is empty. In practice, we only ever copy state + // _between_ transactions/blocks, never in the middle of a transaction. + // However, it doesn't cost us much to copy an empty list, so we do it anyway + // to not blow up if we ever decide copy it in the middle of a transaction + state.accessList = s.accessList.Copy() + + // If there's a prefetcher running, make an inactive copy of it that can + // only access data but does not actively preload (since the user will not + // know that they need to explicitly terminate an active copy). + if s.prefetcher != nil { + state.prefetcher = s.prefetcher.copy() + } + if s.snap != nil { + // In order for the miner to be able to use and make additions + // to the snapshot tree, we need to copy that aswell. + // Otherwise, any block mined by ourselves will cause gaps in the tree, + // and force the miner to operate trie-backed only + state.snap = s.snap + // deep copy needed + state.snapDestructs = make(map[common.Hash]struct{}) + for k, v := range s.snapDestructs { + state.snapDestructs[k] = v + } + state.snapAccounts = make(map[common.Hash][]byte) + for k, v := range s.snapAccounts { + state.snapAccounts[k] = v + } + state.snapStorage = make(map[common.Hash]map[common.Hash][]byte) + for k, v := range s.snapStorage { + temp := make(map[common.Hash][]byte) + for kk, vv := range v { + temp[kk] = vv + } + state.snapStorage[k] = temp + } + } + return state +} + +// Snapshot returns an identifier for the current revision of the state. +func (s *StateDB) Snapshot() int { + id := s.nextRevisionId + s.nextRevisionId++ + s.validRevisions = append(s.validRevisions, revision{id, s.journal.length()}) + return id +} + +// RevertToSnapshot reverts all state changes made since the given revision. +func (s *StateDB) RevertToSnapshot(revid int) { + // Find the snapshot in the stack of valid snapshots. + idx := sort.Search(len(s.validRevisions), func(i int) bool { + return s.validRevisions[i].id >= revid + }) + if idx == len(s.validRevisions) || s.validRevisions[idx].id != revid { + panic(fmt.Errorf("revision id %v cannot be reverted", revid)) + } + snapshot := s.validRevisions[idx].journalIndex + + // Replay the journal to undo changes and remove invalidated snapshots + s.journal.revert(s, snapshot) + s.validRevisions = s.validRevisions[:idx] +} + +// GetRefund returns the current value of the refund counter. +func (s *StateDB) GetRefund() uint64 { + return s.refund +} + +// Finalise finalises the state by removing the s destructed objects and clears +// the journal as well as the refunds. Finalise, however, will not push any updates +// into the tries just yet. Only IntermediateRoot or Commit will do that. +func (s *StateDB) Finalise(deleteEmptyObjects bool) { + addressesToPrefetch := make([][]byte, 0, len(s.journal.dirties)) + for addr := range s.journal.dirties { + obj, exist := s.stateObjects[addr] + if !exist { + // ripeMD is 'touched' at block 1714175, in tx 0x1237f737031e40bcde4a8b7e717b2d15e3ecadfe49bb1bbc71ee9deb09c6fcf2 + // That tx goes out of gas, and although the notion of 'touched' does not exist there, the + // touch-event will still be recorded in the journal. Since ripeMD is a special snowflake, + // it will persist in the journal even though the journal is reverted. In this special circumstance, + // it may exist in `s.journal.dirties` but not in `s.stateObjects`. + // Thus, we can safely ignore it here + continue + } + if obj.suicided || (deleteEmptyObjects && obj.empty()) { + obj.deleted = true + + // If state snapshotting is active, also mark the destruction there. + // Note, we can't do this only at the end of a block because multiple + // transactions within the same block might self destruct and then + // ressurrect an account; but the snapshotter needs both events. + if s.snap != nil { + s.snapDestructs[obj.addrHash] = struct{}{} // We need to maintain account deletions explicitly (will remain set indefinitely) + delete(s.snapAccounts, obj.addrHash) // Clear out any previously updated account data (may be recreated via a ressurrect) + delete(s.snapStorage, obj.addrHash) // Clear out any previously updated storage data (may be recreated via a ressurrect) + } + } else { + obj.finalise(true) // Prefetch slots in the background + } + s.stateObjectsPending[addr] = struct{}{} + s.stateObjectsDirty[addr] = struct{}{} + + // At this point, also ship the address off to the precacher. The precacher + // will start loading tries, and when the change is eventually committed, + // the commit-phase will be a lot faster + addressesToPrefetch = append(addressesToPrefetch, common.CopyBytes(addr[:])) // Copy needed for closure + } + if s.prefetcher != nil && len(addressesToPrefetch) > 0 { + s.prefetcher.prefetch(s.originalRoot, addressesToPrefetch) + } + // Invalidate journal because reverting across transactions is not allowed. + s.clearJournalAndRefund() +} + +// IntermediateRoot computes the current root hash of the state trie. +// It is called in between transactions to get the root hash that +// goes into transaction receipts. +func (s *StateDB) IntermediateRoot(deleteEmptyObjects bool) common.Hash { + // Finalise all the dirty storage states and write them into the tries + s.Finalise(deleteEmptyObjects) + + // If there was a trie prefetcher operating, it gets aborted and irrevocably + // modified after we start retrieving tries. Remove it from the statedb after + // this round of use. + // + // This is weird pre-byzantium since the first tx runs with a prefetcher and + // the remainder without, but pre-byzantium even the initial prefetcher is + // useless, so no sleep lost. + prefetcher := s.prefetcher + if s.prefetcher != nil { + defer func() { + s.prefetcher.close() + s.prefetcher = nil + }() + } + // Although naively it makes sense to retrieve the account trie and then do + // the contract storage and account updates sequentially, that short circuits + // the account prefetcher. Instead, let's process all the storage updates + // first, giving the account prefeches just a few more milliseconds of time + // to pull useful data from disk. + for addr := range s.stateObjectsPending { + if obj := s.stateObjects[addr]; !obj.deleted { + obj.updateRoot(s.db) + } + } + // Now we're about to start to write changes to the trie. The trie is so far + // _untouched_. We can check with the prefetcher, if it can give us a trie + // which has the same root, but also has some content loaded into it. + if prefetcher != nil { + if trie := prefetcher.trie(s.originalRoot); trie != nil { + s.trie = trie + } + } + usedAddrs := make([][]byte, 0, len(s.stateObjectsPending)) + for addr := range s.stateObjectsPending { + if obj := s.stateObjects[addr]; obj.deleted { + s.deleteStateObject(obj) + s.AccountDeleted += 1 + } else { + s.updateStateObject(obj) + s.AccountUpdated += 1 + } + usedAddrs = append(usedAddrs, common.CopyBytes(addr[:])) // Copy needed for closure + } + if prefetcher != nil { + prefetcher.used(s.originalRoot, usedAddrs) + } + if len(s.stateObjectsPending) > 0 { + s.stateObjectsPending = make(map[common.Address]struct{}) + } + // Track the amount of time wasted on hashing the account trie + if metrics.EnabledExpensive { + defer func(start time.Time) { s.AccountHashes += time.Since(start) }(time.Now()) + } + return s.trie.Hash() +} + +// Prepare sets the current transaction hash and index which are +// used when the EVM emits new state logs. +func (s *StateDB) Prepare(thash common.Hash, ti int) { + s.thash = thash + s.txIndex = ti + s.accessList = newAccessList() +} + +func (s *StateDB) clearJournalAndRefund() { + if len(s.journal.entries) > 0 { + s.journal = newJournal() + s.refund = 0 + } + s.validRevisions = s.validRevisions[:0] // Snapshots can be created without journal entires +} + +// Commit writes the state to the underlying in-memory trie database. +func (s *StateDB) Commit(deleteEmptyObjects bool) (common.Hash, error) { + return s.commit(deleteEmptyObjects, nil, common.Hash{}, common.Hash{}) +} + +// CommitWithSnap writes the state to the underlying in-memory trie database and +// generates a snapshot layer for the newly committed state. +func (s *StateDB) CommitWithSnap(deleteEmptyObjects bool, snaps *snapshot.Tree, blockHash, parentHash common.Hash) (common.Hash, error) { + return s.commit(deleteEmptyObjects, snaps, blockHash, parentHash) +} + +// Commit writes the state to the underlying in-memory trie database. +func (s *StateDB) commit(deleteEmptyObjects bool, snaps *snapshot.Tree, blockHash, parentHash common.Hash) (common.Hash, error) { + if s.dbErr != nil { + return common.Hash{}, fmt.Errorf("commit aborted due to earlier error: %v", s.dbErr) + } + // Finalize any pending changes and merge everything into the tries + s.IntermediateRoot(deleteEmptyObjects) + + // Commit objects to the trie, measuring the elapsed time + var storageCommitted int + codeWriter := s.db.TrieDB().DiskDB().NewBatch() + for addr := range s.stateObjectsDirty { + if obj := s.stateObjects[addr]; !obj.deleted { + // Write any contract code associated with the state object + if obj.code != nil && obj.dirtyCode { + rawdb.WriteCode(codeWriter, common.BytesToHash(obj.CodeHash()), obj.code) + obj.dirtyCode = false + } + // Write any storage changes in the state object to its storage trie + committed, err := obj.CommitTrie(s.db) + if err != nil { + return common.Hash{}, err + } + storageCommitted += committed + } + } + if len(s.stateObjectsDirty) > 0 { + s.stateObjectsDirty = make(map[common.Address]struct{}) + } + if codeWriter.ValueSize() > 0 { + if err := codeWriter.Write(); err != nil { + log.Crit("Failed to commit dirty codes", "error", err) + } + } + // Write the account trie changes, measuring the amount of wasted time + var start time.Time + if metrics.EnabledExpensive { + start = time.Now() + } + // The onleaf func is called _serially_, so we can reuse the same account + // for unmarshalling every time. + var account types.StateAccount + root, accountCommitted, err := s.trie.Commit(func(_ [][]byte, _ []byte, leaf []byte, parent common.Hash) error { + if err := rlp.DecodeBytes(leaf, &account); err != nil { + return nil + } + if account.Root != emptyRoot { + s.db.TrieDB().Reference(account.Root, parent) + } + return nil + }) + if err != nil { + return common.Hash{}, err + } + if metrics.EnabledExpensive { + s.AccountCommits += time.Since(start) + + accountUpdatedMeter.Mark(int64(s.AccountUpdated)) + storageUpdatedMeter.Mark(int64(s.StorageUpdated)) + accountDeletedMeter.Mark(int64(s.AccountDeleted)) + storageDeletedMeter.Mark(int64(s.StorageDeleted)) + accountCommittedMeter.Mark(int64(accountCommitted)) + storageCommittedMeter.Mark(int64(storageCommitted)) + s.AccountUpdated, s.AccountDeleted = 0, 0 + s.StorageUpdated, s.StorageDeleted = 0, 0 + } + // If snapshotting is enabled, update the snapshot tree with this new version + if snaps != nil { + if s.snap == nil { + log.Error(fmt.Sprintf("cannot commit with snaps without a pre-existing snap layer, parentHash: %s, blockHash: %s", parentHash, blockHash)) + } + if metrics.EnabledExpensive { + defer func(start time.Time) { s.SnapshotCommits += time.Since(start) }(time.Now()) + } + if err := snaps.Update(blockHash, root, parentHash, s.snapDestructs, s.snapAccounts, s.snapStorage); err != nil { + log.Warn("Failed to update snapshot tree", "to", root, "err", err) + } + s.snap, s.snapDestructs, s.snapAccounts, s.snapStorage = nil, nil, nil, nil + } + + return root, err +} + +// PrepareAccessList handles the preparatory steps for executing a state transition with +// regards to both EIP-2929 and EIP-2930: +// +// - Add sender to access list (2929) +// - Add destination to access list (2929) +// - Add precompiles to access list (2929) +// - Add the contents of the optional tx access list (2930) +// +// This method should only be called if Berlin/SubnetEVM/2929+2930 is applicable at the current number. +func (s *StateDB) PrepareAccessList(sender common.Address, dst *common.Address, precompiles []common.Address, list types.AccessList) { + s.AddAddressToAccessList(sender) + if dst != nil { + s.AddAddressToAccessList(*dst) + // If it's a create-tx, the destination will be added inside evm.create + } + for _, addr := range precompiles { + s.AddAddressToAccessList(addr) + } + for _, el := range list { + s.AddAddressToAccessList(el.Address) + for _, key := range el.StorageKeys { + s.AddSlotToAccessList(el.Address, key) + } + } +} + +// AddAddressToAccessList adds the given address to the access list +func (s *StateDB) AddAddressToAccessList(addr common.Address) { + if s.accessList.AddAddress(addr) { + s.journal.append(accessListAddAccountChange{&addr}) + } +} + +// AddSlotToAccessList adds the given (address, slot)-tuple to the access list +func (s *StateDB) AddSlotToAccessList(addr common.Address, slot common.Hash) { + addrMod, slotMod := s.accessList.AddSlot(addr, slot) + if addrMod { + // In practice, this should not happen, since there is no way to enter the + // scope of 'address' without having the 'address' become already added + // to the access list (via call-variant, create, etc). + // Better safe than sorry, though + s.journal.append(accessListAddAccountChange{&addr}) + } + if slotMod { + s.journal.append(accessListAddSlotChange{ + address: &addr, + slot: &slot, + }) + } +} + +// AddressInAccessList returns true if the given address is in the access list. +func (s *StateDB) AddressInAccessList(addr common.Address) bool { + return s.accessList.ContainsAddress(addr) +} + +// SlotInAccessList returns true if the given (address, slot)-tuple is in the access list. +func (s *StateDB) SlotInAccessList(addr common.Address, slot common.Hash) (addressPresent bool, slotPresent bool) { + return s.accessList.Contains(addr, slot) +} diff --git a/core/state/statedb_test.go b/core/state/statedb_test.go new file mode 100644 index 0000000000..3552c01cef --- /dev/null +++ b/core/state/statedb_test.go @@ -0,0 +1,926 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "bytes" + "encoding/binary" + "fmt" + "math" + "math/big" + "math/rand" + "reflect" + "strings" + "sync" + "testing" + "testing/quick" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// Tests that updating a state trie does not leak any database writes prior to +// actually committing the state. +func TestUpdateLeaks(t *testing.T) { + // Create an empty state database + db := rawdb.NewMemoryDatabase() + state, _ := New(common.Hash{}, NewDatabase(db), nil) + + // Update it with some accounts + for i := byte(0); i < 255; i++ { + addr := common.BytesToAddress([]byte{i}) + state.AddBalance(addr, big.NewInt(int64(11*i))) + state.SetNonce(addr, uint64(42*i)) + if i%2 == 0 { + state.SetState(addr, common.BytesToHash([]byte{i, i, i}), common.BytesToHash([]byte{i, i, i, i})) + } + if i%3 == 0 { + state.SetCode(addr, []byte{i, i, i, i, i}) + } + } + + root := state.IntermediateRoot(false) + if err := state.Database().TrieDB().Commit(root, false, nil); err != nil { + t.Errorf("can not commit trie %v to persistent database", root.Hex()) + } + + // Ensure that no data was leaked into the database + it := db.NewIterator(nil, nil) + for it.Next() { + t.Errorf("State leaked into database: %x -> %x", it.Key(), it.Value()) + } + it.Release() +} + +// Tests that no intermediate state of an object is stored into the database, +// only the one right before the commit. +func TestIntermediateLeaks(t *testing.T) { + // Create two state databases, one transitioning to the final state, the other final from the beginning + transDb := rawdb.NewMemoryDatabase() + finalDb := rawdb.NewMemoryDatabase() + transState, _ := New(common.Hash{}, NewDatabase(transDb), nil) + finalState, _ := New(common.Hash{}, NewDatabase(finalDb), nil) + + modify := func(state *StateDB, addr common.Address, i, tweak byte) { + state.SetBalance(addr, big.NewInt(int64(11*i)+int64(tweak))) + state.SetNonce(addr, uint64(42*i+tweak)) + if i%2 == 0 { + state.SetState(addr, common.Hash{i, i, i, 0}, common.Hash{}) + state.SetState(addr, common.Hash{i, i, i, tweak}, common.Hash{i, i, i, i, tweak}) + } + if i%3 == 0 { + state.SetCode(addr, []byte{i, i, i, i, i, tweak}) + } + } + + // Modify the transient state. + for i := byte(0); i < 255; i++ { + modify(transState, common.Address{i}, i, 0) + } + // Write modifications to trie. + transState.IntermediateRoot(false) + + // Overwrite all the data with new values in the transient database. + for i := byte(0); i < 255; i++ { + modify(transState, common.Address{i}, i, 99) + modify(finalState, common.Address{i}, i, 99) + } + + // Commit and cross check the databases. + transRoot, err := transState.Commit(false) + if err != nil { + t.Fatalf("failed to commit transition state: %v", err) + } + if err = transState.Database().TrieDB().Commit(transRoot, false, nil); err != nil { + t.Errorf("can not commit trie %v to persistent database", transRoot.Hex()) + } + + finalRoot, err := finalState.Commit(false) + if err != nil { + t.Fatalf("failed to commit final state: %v", err) + } + if err = finalState.Database().TrieDB().Commit(finalRoot, false, nil); err != nil { + t.Errorf("can not commit trie %v to persistent database", finalRoot.Hex()) + } + + it := finalDb.NewIterator(nil, nil) + for it.Next() { + key, fvalue := it.Key(), it.Value() + tvalue, err := transDb.Get(key) + if err != nil { + t.Errorf("entry missing from the transition database: %x -> %x", key, fvalue) + } + if !bytes.Equal(fvalue, tvalue) { + t.Errorf("value mismatch at key %x: %x in transition database, %x in final database", key, tvalue, fvalue) + } + } + it.Release() + + it = transDb.NewIterator(nil, nil) + for it.Next() { + key, tvalue := it.Key(), it.Value() + fvalue, err := finalDb.Get(key) + if err != nil { + t.Errorf("extra entry in the transition database: %x -> %x", key, it.Value()) + } + if !bytes.Equal(fvalue, tvalue) { + t.Errorf("value mismatch at key %x: %x in transition database, %x in final database", key, tvalue, fvalue) + } + } +} + +// TestCopy tests that copying a StateDB object indeed makes the original and +// the copy independent of each other. This test is a regression test against +// https://github.com/ethereum/go-ethereum/pull/15549. +func TestCopy(t *testing.T) { + // Create a random state test to copy and modify "independently" + orig, _ := New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil) + + for i := byte(0); i < 255; i++ { + obj := orig.GetOrNewStateObject(common.BytesToAddress([]byte{i})) + obj.AddBalance(big.NewInt(int64(i))) + orig.updateStateObject(obj) + } + orig.Finalise(false) + + // Copy the state + copy := orig.Copy() + + // Copy the copy state + ccopy := copy.Copy() + + // modify all in memory + for i := byte(0); i < 255; i++ { + origObj := orig.GetOrNewStateObject(common.BytesToAddress([]byte{i})) + copyObj := copy.GetOrNewStateObject(common.BytesToAddress([]byte{i})) + ccopyObj := ccopy.GetOrNewStateObject(common.BytesToAddress([]byte{i})) + + origObj.AddBalance(big.NewInt(2 * int64(i))) + copyObj.AddBalance(big.NewInt(3 * int64(i))) + ccopyObj.AddBalance(big.NewInt(4 * int64(i))) + + orig.updateStateObject(origObj) + copy.updateStateObject(copyObj) + ccopy.updateStateObject(copyObj) + } + + // Finalise the changes on all concurrently + finalise := func(wg *sync.WaitGroup, db *StateDB) { + defer wg.Done() + db.Finalise(true) + } + + var wg sync.WaitGroup + wg.Add(3) + go finalise(&wg, orig) + go finalise(&wg, copy) + go finalise(&wg, ccopy) + wg.Wait() + + // Verify that the three states have been updated independently + for i := byte(0); i < 255; i++ { + origObj := orig.GetOrNewStateObject(common.BytesToAddress([]byte{i})) + copyObj := copy.GetOrNewStateObject(common.BytesToAddress([]byte{i})) + ccopyObj := ccopy.GetOrNewStateObject(common.BytesToAddress([]byte{i})) + + if want := big.NewInt(3 * int64(i)); origObj.Balance().Cmp(want) != 0 { + t.Errorf("orig obj %d: balance mismatch: have %v, want %v", i, origObj.Balance(), want) + } + if want := big.NewInt(4 * int64(i)); copyObj.Balance().Cmp(want) != 0 { + t.Errorf("copy obj %d: balance mismatch: have %v, want %v", i, copyObj.Balance(), want) + } + if want := big.NewInt(5 * int64(i)); ccopyObj.Balance().Cmp(want) != 0 { + t.Errorf("copy obj %d: balance mismatch: have %v, want %v", i, ccopyObj.Balance(), want) + } + } +} + +func TestSnapshotRandom(t *testing.T) { + config := &quick.Config{MaxCount: 1000} + err := quick.Check((*snapshotTest).run, config) + if cerr, ok := err.(*quick.CheckError); ok { + test := cerr.In[0].(*snapshotTest) + t.Errorf("%v:\n%s", test.err, test) + } else if err != nil { + t.Error(err) + } +} + +// A snapshotTest checks that reverting StateDB snapshots properly undoes all changes +// captured by the snapshot. Instances of this test with pseudorandom content are created +// by Generate. +// +// The test works as follows: +// +// A new state is created and all actions are applied to it. Several snapshots are taken +// in between actions. The test then reverts each snapshot. For each snapshot the actions +// leading up to it are replayed on a fresh, empty state. The behaviour of all public +// accessor methods on the reverted state must match the return value of the equivalent +// methods on the replayed state. +type snapshotTest struct { + addrs []common.Address // all account addresses + actions []testAction // modifications to the state + snapshots []int // actions indexes at which snapshot is taken + err error // failure details are reported through this field +} + +type testAction struct { + name string + fn func(testAction, *StateDB) + args []int64 + noAddr bool +} + +// newTestAction creates a random action that changes state. +func newTestAction(addr common.Address, r *rand.Rand) testAction { + actions := []testAction{ + { + name: "SetBalance", + fn: func(a testAction, s *StateDB) { + s.SetBalance(addr, big.NewInt(a.args[0])) + }, + args: make([]int64, 1), + }, + { + name: "AddBalance", + fn: func(a testAction, s *StateDB) { + s.AddBalance(addr, big.NewInt(a.args[0])) + }, + args: make([]int64, 1), + }, + { + name: "SetNonce", + fn: func(a testAction, s *StateDB) { + s.SetNonce(addr, uint64(a.args[0])) + }, + args: make([]int64, 1), + }, + { + name: "SetState", + fn: func(a testAction, s *StateDB) { + var key, val common.Hash + binary.BigEndian.PutUint16(key[:], uint16(a.args[0])) + binary.BigEndian.PutUint16(val[:], uint16(a.args[1])) + s.SetState(addr, key, val) + }, + args: make([]int64, 2), + }, + { + name: "SetCode", + fn: func(a testAction, s *StateDB) { + code := make([]byte, 16) + binary.BigEndian.PutUint64(code, uint64(a.args[0])) + binary.BigEndian.PutUint64(code[8:], uint64(a.args[1])) + s.SetCode(addr, code) + }, + args: make([]int64, 2), + }, + { + name: "CreateAccount", + fn: func(a testAction, s *StateDB) { + s.CreateAccount(addr) + }, + }, + { + name: "Suicide", + fn: func(a testAction, s *StateDB) { + s.Suicide(addr) + }, + }, + { + name: "AddRefund", + fn: func(a testAction, s *StateDB) { + s.AddRefund(uint64(a.args[0])) + }, + args: make([]int64, 1), + noAddr: true, + }, + { + name: "AddLog", + fn: func(a testAction, s *StateDB) { + data := make([]byte, 2) + binary.BigEndian.PutUint16(data, uint16(a.args[0])) + s.AddLog(&types.Log{Address: addr, Data: data}) + }, + args: make([]int64, 1), + }, + { + name: "AddPreimage", + fn: func(a testAction, s *StateDB) { + preimage := []byte{1} + hash := common.BytesToHash(preimage) + s.AddPreimage(hash, preimage) + }, + args: make([]int64, 1), + }, + { + name: "AddAddressToAccessList", + fn: func(a testAction, s *StateDB) { + s.AddAddressToAccessList(addr) + }, + }, + { + name: "AddSlotToAccessList", + fn: func(a testAction, s *StateDB) { + s.AddSlotToAccessList(addr, + common.Hash{byte(a.args[0])}) + }, + args: make([]int64, 1), + }, + } + action := actions[r.Intn(len(actions))] + var nameargs []string + if !action.noAddr { + nameargs = append(nameargs, addr.Hex()) + } + for i := range action.args { + action.args[i] = rand.Int63n(100) + nameargs = append(nameargs, fmt.Sprint(action.args[i])) + } + action.name += strings.Join(nameargs, ", ") + return action +} + +// Generate returns a new snapshot test of the given size. All randomness is +// derived from r. +func (*snapshotTest) Generate(r *rand.Rand, size int) reflect.Value { + // Generate random actions. + addrs := make([]common.Address, 50) + for i := range addrs { + addrs[i][0] = byte(i) + } + actions := make([]testAction, size) + for i := range actions { + addr := addrs[r.Intn(len(addrs))] + actions[i] = newTestAction(addr, r) + } + // Generate snapshot indexes. + nsnapshots := int(math.Sqrt(float64(size))) + if size > 0 && nsnapshots == 0 { + nsnapshots = 1 + } + snapshots := make([]int, nsnapshots) + snaplen := len(actions) / nsnapshots + for i := range snapshots { + // Try to place the snapshots some number of actions apart from each other. + snapshots[i] = (i * snaplen) + r.Intn(snaplen) + } + return reflect.ValueOf(&snapshotTest{addrs, actions, snapshots, nil}) +} + +func (test *snapshotTest) String() string { + out := new(bytes.Buffer) + sindex := 0 + for i, action := range test.actions { + if len(test.snapshots) > sindex && i == test.snapshots[sindex] { + fmt.Fprintf(out, "---- snapshot %d ----\n", sindex) + sindex++ + } + fmt.Fprintf(out, "%4d: %s\n", i, action.name) + } + return out.String() +} + +func (test *snapshotTest) run() bool { + // Run all actions and create snapshots. + var ( + state, _ = New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil) + snapshotRevs = make([]int, len(test.snapshots)) + sindex = 0 + ) + for i, action := range test.actions { + if len(test.snapshots) > sindex && i == test.snapshots[sindex] { + snapshotRevs[sindex] = state.Snapshot() + sindex++ + } + action.fn(action, state) + } + // Revert all snapshots in reverse order. Each revert must yield a state + // that is equivalent to fresh state with all actions up the snapshot applied. + for sindex--; sindex >= 0; sindex-- { + checkstate, _ := New(common.Hash{}, state.Database(), nil) + for _, action := range test.actions[:test.snapshots[sindex]] { + action.fn(action, checkstate) + } + state.RevertToSnapshot(snapshotRevs[sindex]) + if err := test.checkEqual(state, checkstate); err != nil { + test.err = fmt.Errorf("state mismatch after revert to snapshot %d\n%v", sindex, err) + return false + } + } + return true +} + +// checkEqual checks that methods of state and checkstate return the same values. +func (test *snapshotTest) checkEqual(state, checkstate *StateDB) error { + for _, addr := range test.addrs { + var err error + checkeq := func(op string, a, b interface{}) bool { + if err == nil && !reflect.DeepEqual(a, b) { + err = fmt.Errorf("got %s(%s) == %v, want %v", op, addr.Hex(), a, b) + return false + } + return true + } + // Check basic accessor methods. + checkeq("Exist", state.Exist(addr), checkstate.Exist(addr)) + checkeq("HasSuicided", state.HasSuicided(addr), checkstate.HasSuicided(addr)) + checkeq("GetBalance", state.GetBalance(addr), checkstate.GetBalance(addr)) + checkeq("GetNonce", state.GetNonce(addr), checkstate.GetNonce(addr)) + checkeq("GetCode", state.GetCode(addr), checkstate.GetCode(addr)) + checkeq("GetCodeHash", state.GetCodeHash(addr), checkstate.GetCodeHash(addr)) + checkeq("GetCodeSize", state.GetCodeSize(addr), checkstate.GetCodeSize(addr)) + // Check storage. + if obj := state.getStateObject(addr); obj != nil { + state.ForEachStorage(addr, func(key, value common.Hash) bool { + return checkeq("GetState("+key.Hex()+")", checkstate.GetState(addr, key), value) + }) + checkstate.ForEachStorage(addr, func(key, value common.Hash) bool { + return checkeq("GetState("+key.Hex()+")", checkstate.GetState(addr, key), value) + }) + } + if err != nil { + return err + } + } + + if state.GetRefund() != checkstate.GetRefund() { + return fmt.Errorf("got GetRefund() == %d, want GetRefund() == %d", + state.GetRefund(), checkstate.GetRefund()) + } + if !reflect.DeepEqual(state.GetLogs(common.Hash{}, common.Hash{}), checkstate.GetLogs(common.Hash{}, common.Hash{})) { + return fmt.Errorf("got GetLogs(common.Hash{}) == %v, want GetLogs(common.Hash{}) == %v", + state.GetLogs(common.Hash{}, common.Hash{}), checkstate.GetLogs(common.Hash{}, common.Hash{})) + } + return nil +} + +func TestTouchDelete(t *testing.T) { + s := newStateTest() + s.state.GetOrNewStateObject(common.Address{}) + root, _ := s.state.Commit(false) + s.state, _ = NewWithSnapshot(root, s.state.db, s.state.snap) + + snapshot := s.state.Snapshot() + s.state.AddBalance(common.Address{}, new(big.Int)) + + if len(s.state.journal.dirties) != 1 { + t.Fatal("expected one dirty state object") + } + s.state.RevertToSnapshot(snapshot) + if len(s.state.journal.dirties) != 0 { + t.Fatal("expected no dirty state object") + } +} + +// TestCopyOfCopy tests that modified objects are carried over to the copy, and the copy of the copy. +// See https://github.com/ethereum/go-ethereum/pull/15225#issuecomment-380191512 +func TestCopyOfCopy(t *testing.T) { + state, _ := New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil) + addr := common.HexToAddress("aaaa") + state.SetBalance(addr, big.NewInt(42)) + + if got := state.Copy().GetBalance(addr).Uint64(); got != 42 { + t.Fatalf("1st copy fail, expected 42, got %v", got) + } + if got := state.Copy().Copy().GetBalance(addr).Uint64(); got != 42 { + t.Fatalf("2nd copy fail, expected 42, got %v", got) + } +} + +// Tests a regression where committing a copy lost some internal meta information, +// leading to corrupted subsequent copies. +// +// See https://github.com/ethereum/go-ethereum/issues/20106. +func TestCopyCommitCopy(t *testing.T) { + state, _ := New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil) + + // Create an account and check if the retrieved balance is correct + addr := common.HexToAddress("0xaffeaffeaffeaffeaffeaffeaffeaffeaffeaffe") + skey := common.HexToHash("aaa") + sval := common.HexToHash("bbb") + + state.SetBalance(addr, big.NewInt(42)) // Change the account trie + state.SetCode(addr, []byte("hello")) // Change an external metadata + state.SetState(addr, skey, sval) // Change the storage trie + + if balance := state.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("initial balance mismatch: have %v, want %v", balance, 42) + } + if code := state.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("initial code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := state.GetState(addr, skey); val != sval { + t.Fatalf("initial non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := state.GetCommittedState(addr, skey); val != (common.Hash{}) { + t.Fatalf("initial committed storage slot mismatch: have %x, want %x", val, common.Hash{}) + } + // Copy the non-committed state database and check pre/post commit balance + copyOne := state.Copy() + if balance := copyOne.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("first copy pre-commit balance mismatch: have %v, want %v", balance, 42) + } + if code := copyOne.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("first copy pre-commit code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := copyOne.GetState(addr, skey); val != sval { + t.Fatalf("first copy pre-commit non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := copyOne.GetCommittedState(addr, skey); val != (common.Hash{}) { + t.Fatalf("first copy pre-commit committed storage slot mismatch: have %x, want %x", val, common.Hash{}) + } + + copyOne.Commit(false) + if balance := copyOne.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("first copy post-commit balance mismatch: have %v, want %v", balance, 42) + } + if code := copyOne.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("first copy post-commit code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := copyOne.GetState(addr, skey); val != sval { + t.Fatalf("first copy post-commit non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := copyOne.GetCommittedState(addr, skey); val != sval { + t.Fatalf("first copy post-commit committed storage slot mismatch: have %x, want %x", val, sval) + } + // Copy the copy and check the balance once more + copyTwo := copyOne.Copy() + if balance := copyTwo.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("second copy balance mismatch: have %v, want %v", balance, 42) + } + if code := copyTwo.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("second copy code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := copyTwo.GetState(addr, skey); val != sval { + t.Fatalf("second copy non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := copyTwo.GetCommittedState(addr, skey); val != sval { + t.Fatalf("second copy post-commit committed storage slot mismatch: have %x, want %x", val, sval) + } +} + +// Tests a regression where committing a copy lost some internal meta information, +// leading to corrupted subsequent copies. +// +// See https://github.com/ethereum/go-ethereum/issues/20106. +func TestCopyCopyCommitCopy(t *testing.T) { + state, _ := New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil) + + // Create an account and check if the retrieved balance is correct + addr := common.HexToAddress("0xaffeaffeaffeaffeaffeaffeaffeaffeaffeaffe") + skey := common.HexToHash("aaa") + sval := common.HexToHash("bbb") + + state.SetBalance(addr, big.NewInt(42)) // Change the account trie + state.SetCode(addr, []byte("hello")) // Change an external metadata + state.SetState(addr, skey, sval) // Change the storage trie + + if balance := state.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("initial balance mismatch: have %v, want %v", balance, 42) + } + if code := state.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("initial code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := state.GetState(addr, skey); val != sval { + t.Fatalf("initial non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := state.GetCommittedState(addr, skey); val != (common.Hash{}) { + t.Fatalf("initial committed storage slot mismatch: have %x, want %x", val, common.Hash{}) + } + // Copy the non-committed state database and check pre/post commit balance + copyOne := state.Copy() + if balance := copyOne.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("first copy balance mismatch: have %v, want %v", balance, 42) + } + if code := copyOne.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("first copy code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := copyOne.GetState(addr, skey); val != sval { + t.Fatalf("first copy non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := copyOne.GetCommittedState(addr, skey); val != (common.Hash{}) { + t.Fatalf("first copy committed storage slot mismatch: have %x, want %x", val, common.Hash{}) + } + // Copy the copy and check the balance once more + copyTwo := copyOne.Copy() + if balance := copyTwo.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("second copy pre-commit balance mismatch: have %v, want %v", balance, 42) + } + if code := copyTwo.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("second copy pre-commit code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := copyTwo.GetState(addr, skey); val != sval { + t.Fatalf("second copy pre-commit non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := copyTwo.GetCommittedState(addr, skey); val != (common.Hash{}) { + t.Fatalf("second copy pre-commit committed storage slot mismatch: have %x, want %x", val, common.Hash{}) + } + copyTwo.Commit(false) + if balance := copyTwo.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("second copy post-commit balance mismatch: have %v, want %v", balance, 42) + } + if code := copyTwo.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("second copy post-commit code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := copyTwo.GetState(addr, skey); val != sval { + t.Fatalf("second copy post-commit non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := copyTwo.GetCommittedState(addr, skey); val != sval { + t.Fatalf("second copy post-commit committed storage slot mismatch: have %x, want %x", val, sval) + } + // Copy the copy-copy and check the balance once more + copyThree := copyTwo.Copy() + if balance := copyThree.GetBalance(addr); balance.Cmp(big.NewInt(42)) != 0 { + t.Fatalf("third copy balance mismatch: have %v, want %v", balance, 42) + } + if code := copyThree.GetCode(addr); !bytes.Equal(code, []byte("hello")) { + t.Fatalf("third copy code mismatch: have %x, want %x", code, []byte("hello")) + } + if val := copyThree.GetState(addr, skey); val != sval { + t.Fatalf("third copy non-committed storage slot mismatch: have %x, want %x", val, sval) + } + if val := copyThree.GetCommittedState(addr, skey); val != sval { + t.Fatalf("third copy committed storage slot mismatch: have %x, want %x", val, sval) + } +} + +// TestDeleteCreateRevert tests a weird state transition corner case that we hit +// while changing the internals of StateDB. The workflow is that a contract is +// self-destructed, then in a follow-up transaction (but same block) it's created +// again and the transaction reverted. +// +// The original StateDB implementation flushed dirty objects to the tries after +// each transaction, so this works ok. The rework accumulated writes in memory +// first, but the journal wiped the entire state object on create-revert. +func TestDeleteCreateRevert(t *testing.T) { + // Create an initial state with a single contract + state, _ := New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil) + + addr := common.BytesToAddress([]byte("so")) + state.SetBalance(addr, big.NewInt(1)) + + root, _ := state.Commit(false) + state, _ = NewWithSnapshot(root, state.db, state.snap) + + // Simulate self-destructing in one transaction, then create-reverting in another + state.Suicide(addr) + state.Finalise(true) + + id := state.Snapshot() + state.SetBalance(addr, big.NewInt(2)) + state.RevertToSnapshot(id) + + // Commit the entire state and make sure we don't crash and have the correct state + root, _ = state.Commit(true) + state, _ = NewWithSnapshot(root, state.db, state.snap) + + if state.getStateObject(addr) != nil { + t.Fatalf("self-destructed contract came alive") + } +} + +// TestMissingTrieNodes tests that if the StateDB fails to load parts of the trie, +// the Commit operation fails with an error +// If we are missing trie nodes, we should not continue writing to the trie +func TestMissingTrieNodes(t *testing.T) { + // Create an initial state with a few accounts + memDb := rawdb.NewMemoryDatabase() + db := NewDatabase(memDb) + var root common.Hash + state, _ := New(common.Hash{}, db, nil) + addr := common.BytesToAddress([]byte("so")) + { + state.SetBalance(addr, big.NewInt(1)) + state.SetCode(addr, []byte{1, 2, 3}) + a2 := common.BytesToAddress([]byte("another")) + state.SetBalance(a2, big.NewInt(100)) + state.SetCode(a2, []byte{1, 2, 4}) + root, _ = state.Commit(false) + t.Logf("root: %x", root) + // force-flush + state.Database().TrieDB().Cap(0) + } + // Create a new state on the old root + state, _ = New(root, db, nil) + // Now we clear out the memdb + it := memDb.NewIterator(nil, nil) + for it.Next() { + k := it.Key() + // Leave the root intact + if !bytes.Equal(k, root[:]) { + t.Logf("key: %x", k) + memDb.Delete(k) + } + } + balance := state.GetBalance(addr) + // The removed elem should lead to it returning zero balance + if exp, got := uint64(0), balance.Uint64(); got != exp { + t.Errorf("expected %d, got %d", exp, got) + } + // Modify the state + state.SetBalance(addr, big.NewInt(2)) + root, err := state.Commit(false) + if err == nil { + t.Fatalf("expected error, got root :%x", root) + } +} + +func TestStateDBAccessList(t *testing.T) { + // Some helpers + addr := func(a string) common.Address { + return common.HexToAddress(a) + } + slot := func(a string) common.Hash { + return common.HexToHash(a) + } + + memDb := rawdb.NewMemoryDatabase() + db := NewDatabase(memDb) + state, _ := New(common.Hash{}, db, nil) + state.accessList = newAccessList() + + verifyAddrs := func(astrings ...string) { + t.Helper() + // convert to common.Address form + var addresses []common.Address + addressMap := make(map[common.Address]struct{}) + for _, astring := range astrings { + address := addr(astring) + addresses = append(addresses, address) + addressMap[address] = struct{}{} + } + // Check that the given addresses are in the access list + for _, address := range addresses { + if !state.AddressInAccessList(address) { + t.Fatalf("expected %x to be in access list", address) + } + } + // Check that only the expected addresses are present in the acesslist + for address := range state.accessList.addresses { + if _, exist := addressMap[address]; !exist { + t.Fatalf("extra address %x in access list", address) + } + } + } + verifySlots := func(addrString string, slotStrings ...string) { + if !state.AddressInAccessList(addr(addrString)) { + t.Fatalf("scope missing address/slots %v", addrString) + } + address := addr(addrString) + // convert to common.Hash form + var slots []common.Hash + slotMap := make(map[common.Hash]struct{}) + for _, slotString := range slotStrings { + s := slot(slotString) + slots = append(slots, s) + slotMap[s] = struct{}{} + } + // Check that the expected items are in the access list + for i, s := range slots { + if _, slotPresent := state.SlotInAccessList(address, s); !slotPresent { + t.Fatalf("input %d: scope missing slot %v (address %v)", i, s, addrString) + } + } + // Check that no extra elements are in the access list + index := state.accessList.addresses[address] + if index >= 0 { + stateSlots := state.accessList.slots[index] + for s := range stateSlots { + if _, slotPresent := slotMap[s]; !slotPresent { + t.Fatalf("scope has extra slot %v (address %v)", s, addrString) + } + } + } + } + + state.AddAddressToAccessList(addr("aa")) // 1 + state.AddSlotToAccessList(addr("bb"), slot("01")) // 2,3 + state.AddSlotToAccessList(addr("bb"), slot("02")) // 4 + verifyAddrs("aa", "bb") + verifySlots("bb", "01", "02") + + // Make a copy + stateCopy1 := state.Copy() + if exp, got := 4, state.journal.length(); exp != got { + t.Fatalf("journal length mismatch: have %d, want %d", got, exp) + } + + // same again, should cause no journal entries + state.AddSlotToAccessList(addr("bb"), slot("01")) + state.AddSlotToAccessList(addr("bb"), slot("02")) + state.AddAddressToAccessList(addr("aa")) + if exp, got := 4, state.journal.length(); exp != got { + t.Fatalf("journal length mismatch: have %d, want %d", got, exp) + } + // some new ones + state.AddSlotToAccessList(addr("bb"), slot("03")) // 5 + state.AddSlotToAccessList(addr("aa"), slot("01")) // 6 + state.AddSlotToAccessList(addr("cc"), slot("01")) // 7,8 + state.AddAddressToAccessList(addr("cc")) + if exp, got := 8, state.journal.length(); exp != got { + t.Fatalf("journal length mismatch: have %d, want %d", got, exp) + } + + verifyAddrs("aa", "bb", "cc") + verifySlots("aa", "01") + verifySlots("bb", "01", "02", "03") + verifySlots("cc", "01") + + // now start rolling back changes + state.journal.revert(state, 7) + if _, ok := state.SlotInAccessList(addr("cc"), slot("01")); ok { + t.Fatalf("slot present, expected missing") + } + verifyAddrs("aa", "bb", "cc") + verifySlots("aa", "01") + verifySlots("bb", "01", "02", "03") + + state.journal.revert(state, 6) + if state.AddressInAccessList(addr("cc")) { + t.Fatalf("addr present, expected missing") + } + verifyAddrs("aa", "bb") + verifySlots("aa", "01") + verifySlots("bb", "01", "02", "03") + + state.journal.revert(state, 5) + if _, ok := state.SlotInAccessList(addr("aa"), slot("01")); ok { + t.Fatalf("slot present, expected missing") + } + verifyAddrs("aa", "bb") + verifySlots("bb", "01", "02", "03") + + state.journal.revert(state, 4) + if _, ok := state.SlotInAccessList(addr("bb"), slot("03")); ok { + t.Fatalf("slot present, expected missing") + } + verifyAddrs("aa", "bb") + verifySlots("bb", "01", "02") + + state.journal.revert(state, 3) + if _, ok := state.SlotInAccessList(addr("bb"), slot("02")); ok { + t.Fatalf("slot present, expected missing") + } + verifyAddrs("aa", "bb") + verifySlots("bb", "01") + + state.journal.revert(state, 2) + if _, ok := state.SlotInAccessList(addr("bb"), slot("01")); ok { + t.Fatalf("slot present, expected missing") + } + verifyAddrs("aa", "bb") + + state.journal.revert(state, 1) + if state.AddressInAccessList(addr("bb")) { + t.Fatalf("addr present, expected missing") + } + verifyAddrs("aa") + + state.journal.revert(state, 0) + if state.AddressInAccessList(addr("aa")) { + t.Fatalf("addr present, expected missing") + } + if got, exp := len(state.accessList.addresses), 0; got != exp { + t.Fatalf("expected empty, got %d", got) + } + if got, exp := len(state.accessList.slots), 0; got != exp { + t.Fatalf("expected empty, got %d", got) + } + // Check the copy + // Make a copy + state = stateCopy1 + verifyAddrs("aa", "bb") + verifySlots("bb", "01", "02") + if got, exp := len(state.accessList.addresses), 2; got != exp { + t.Fatalf("expected empty, got %d", got) + } + if got, exp := len(state.accessList.slots), 1; got != exp { + t.Fatalf("expected empty, got %d", got) + } +} diff --git a/core/state/trie_prefetcher.go b/core/state/trie_prefetcher.go new file mode 100644 index 0000000000..f83cd02535 --- /dev/null +++ b/core/state/trie_prefetcher.go @@ -0,0 +1,343 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "sync" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" +) + +var ( + // triePrefetchMetricsPrefix is the prefix under which to publis the metrics. + triePrefetchMetricsPrefix = "trie/prefetch/" +) + +// triePrefetcher is an active prefetcher, which receives accounts or storage +// items and does trie-loading of them. The goal is to get as much useful content +// into the caches as possible. +// +// Note, the prefetcher's API is not thread safe. +type triePrefetcher struct { + db Database // Database to fetch trie nodes through + root common.Hash // Root hash of theaccount trie for metrics + fetches map[common.Hash]Trie // Partially or fully fetcher tries + fetchers map[common.Hash]*subfetcher // Subfetchers for each trie + + deliveryMissMeter metrics.Meter + accountLoadMeter metrics.Meter + accountDupMeter metrics.Meter + accountSkipMeter metrics.Meter + accountWasteMeter metrics.Meter + storageLoadMeter metrics.Meter + storageDupMeter metrics.Meter + storageSkipMeter metrics.Meter + storageWasteMeter metrics.Meter +} + +// newTriePrefetcher +func newTriePrefetcher(db Database, root common.Hash, namespace string) *triePrefetcher { + prefix := triePrefetchMetricsPrefix + namespace + p := &triePrefetcher{ + db: db, + root: root, + fetchers: make(map[common.Hash]*subfetcher), // Active prefetchers use the fetchers map + + deliveryMissMeter: metrics.GetOrRegisterMeter(prefix+"/deliverymiss", nil), + accountLoadMeter: metrics.GetOrRegisterMeter(prefix+"/account/load", nil), + accountDupMeter: metrics.GetOrRegisterMeter(prefix+"/account/dup", nil), + accountSkipMeter: metrics.GetOrRegisterMeter(prefix+"/account/skip", nil), + accountWasteMeter: metrics.GetOrRegisterMeter(prefix+"/account/waste", nil), + storageLoadMeter: metrics.GetOrRegisterMeter(prefix+"/storage/load", nil), + storageDupMeter: metrics.GetOrRegisterMeter(prefix+"/storage/dup", nil), + storageSkipMeter: metrics.GetOrRegisterMeter(prefix+"/storage/skip", nil), + storageWasteMeter: metrics.GetOrRegisterMeter(prefix+"/storage/waste", nil), + } + return p +} + +// close iterates over all the subfetchers, aborts any that were left spinning +// and reports the stats to the metrics subsystem. +func (p *triePrefetcher) close() { + for _, fetcher := range p.fetchers { + fetcher.abort() // safe to do multiple times + + if metrics.Enabled { + if fetcher.root == p.root { + p.accountLoadMeter.Mark(int64(len(fetcher.seen))) + p.accountDupMeter.Mark(int64(fetcher.dups)) + p.accountSkipMeter.Mark(int64(len(fetcher.tasks))) + + for _, key := range fetcher.used { + delete(fetcher.seen, string(key)) + } + p.accountWasteMeter.Mark(int64(len(fetcher.seen))) + } else { + p.storageLoadMeter.Mark(int64(len(fetcher.seen))) + p.storageDupMeter.Mark(int64(fetcher.dups)) + p.storageSkipMeter.Mark(int64(len(fetcher.tasks))) + + for _, key := range fetcher.used { + delete(fetcher.seen, string(key)) + } + p.storageWasteMeter.Mark(int64(len(fetcher.seen))) + } + } + } + // Clear out all fetchers (will crash on a second call, deliberate) + p.fetchers = nil +} + +// copy creates a deep-but-inactive copy of the trie prefetcher. Any trie data +// already loaded will be copied over, but no goroutines will be started. This +// is mostly used in the miner which creates a copy of it's actively mutated +// state to be sealed while it may further mutate the state. +func (p *triePrefetcher) copy() *triePrefetcher { + copy := &triePrefetcher{ + db: p.db, + root: p.root, + fetches: make(map[common.Hash]Trie), // Active prefetchers use the fetches map + + deliveryMissMeter: p.deliveryMissMeter, + accountLoadMeter: p.accountLoadMeter, + accountDupMeter: p.accountDupMeter, + accountSkipMeter: p.accountSkipMeter, + accountWasteMeter: p.accountWasteMeter, + storageLoadMeter: p.storageLoadMeter, + storageDupMeter: p.storageDupMeter, + storageSkipMeter: p.storageSkipMeter, + storageWasteMeter: p.storageWasteMeter, + } + // If the prefetcher is already a copy, duplicate the data + if p.fetches != nil { + for root, fetch := range p.fetches { + copy.fetches[root] = p.db.CopyTrie(fetch) + } + return copy + } + // Otherwise we're copying an active fetcher, retrieve the current states + for root, fetcher := range p.fetchers { + copy.fetches[root] = fetcher.peek() + } + return copy +} + +// prefetch schedules a batch of trie items to prefetch. +func (p *triePrefetcher) prefetch(root common.Hash, keys [][]byte) { + // If the prefetcher is an inactive one, bail out + if p.fetches != nil { + return + } + // Active fetcher, schedule the retrievals + fetcher := p.fetchers[root] + if fetcher == nil { + fetcher = newSubfetcher(p.db, root) + p.fetchers[root] = fetcher + } + fetcher.schedule(keys) +} + +// trie returns the trie matching the root hash, or nil if the prefetcher doesn't +// have it. +func (p *triePrefetcher) trie(root common.Hash) Trie { + // If the prefetcher is inactive, return from existing deep copies + if p.fetches != nil { + trie := p.fetches[root] + if trie == nil { + p.deliveryMissMeter.Mark(1) + return nil + } + return p.db.CopyTrie(trie) + } + // Otherwise the prefetcher is active, bail if no trie was prefetched for this root + fetcher := p.fetchers[root] + if fetcher == nil { + p.deliveryMissMeter.Mark(1) + return nil + } + // Interrupt the prefetcher if it's by any chance still running and return + // a copy of any pre-loaded trie. + fetcher.abort() // safe to do multiple times + + trie := fetcher.peek() + if trie == nil { + p.deliveryMissMeter.Mark(1) + return nil + } + return trie +} + +// used marks a batch of state items used to allow creating statistics as to +// how useful or wasteful the prefetcher is. +func (p *triePrefetcher) used(root common.Hash, used [][]byte) { + if fetcher := p.fetchers[root]; fetcher != nil { + fetcher.used = used + } +} + +// subfetcher is a trie fetcher goroutine responsible for pulling entries for a +// single trie. It is spawned when a new root is encountered and lives until the +// main prefetcher is paused and either all requested items are processed or if +// the trie being worked on is retrieved from the prefetcher. +type subfetcher struct { + db Database // Database to load trie nodes through + root common.Hash // Root hash of the trie to prefetch + trie Trie // Trie being populated with nodes + + tasks [][]byte // Items queued up for retrieval + lock sync.Mutex // Lock protecting the task queue + + wake chan struct{} // Wake channel if a new task is scheduled + stop chan struct{} // Channel to interrupt processing + term chan struct{} // Channel to signal iterruption + copy chan chan Trie // Channel to request a copy of the current trie + + seen map[string]struct{} // Tracks the entries already loaded + dups int // Number of duplicate preload tasks + used [][]byte // Tracks the entries used in the end +} + +// newSubfetcher creates a goroutine to prefetch state items belonging to a +// particular root hash. +func newSubfetcher(db Database, root common.Hash) *subfetcher { + sf := &subfetcher{ + db: db, + root: root, + wake: make(chan struct{}, 1), + stop: make(chan struct{}), + term: make(chan struct{}), + copy: make(chan chan Trie), + seen: make(map[string]struct{}), + } + go sf.loop() + return sf +} + +// schedule adds a batch of trie keys to the queue to prefetch. +func (sf *subfetcher) schedule(keys [][]byte) { + // Append the tasks to the current queue + sf.lock.Lock() + sf.tasks = append(sf.tasks, keys...) + sf.lock.Unlock() + + // Notify the prefetcher, it's fine if it's already terminated + select { + case sf.wake <- struct{}{}: + default: + } +} + +// peek tries to retrieve a deep copy of the fetcher's trie in whatever form it +// is currently. +func (sf *subfetcher) peek() Trie { + ch := make(chan Trie) + select { + case sf.copy <- ch: + // Subfetcher still alive, return copy from it + return <-ch + + case <-sf.term: + // Subfetcher already terminated, return a copy directly + if sf.trie == nil { + return nil + } + return sf.db.CopyTrie(sf.trie) + } +} + +// abort interrupts the subfetcher immediately. It is safe to call abort multiple +// times but it is not thread safe. +func (sf *subfetcher) abort() { + select { + case <-sf.stop: + default: + close(sf.stop) + } + <-sf.term +} + +// loop waits for new tasks to be scheduled and keeps loading them until it runs +// out of tasks or its underlying trie is retrieved for committing. +func (sf *subfetcher) loop() { + // No matter how the loop stops, signal anyone waiting that it's terminated + defer close(sf.term) + + // Start by opening the trie and stop processing if it fails + trie, err := sf.db.OpenTrie(sf.root) + if err != nil { + log.Warn("Trie prefetcher failed opening trie", "root", sf.root, "err", err) + return + } + sf.trie = trie + + // Trie opened successfully, keep prefetching items + for { + select { + case <-sf.wake: + // Subfetcher was woken up, retrieve any tasks to avoid spinning the lock + sf.lock.Lock() + tasks := sf.tasks + sf.tasks = nil + sf.lock.Unlock() + + // Prefetch any tasks until the loop is interrupted + for i, task := range tasks { + select { + case <-sf.stop: + // If termination is requested, add any leftover back and return + sf.lock.Lock() + sf.tasks = append(sf.tasks, tasks[i:]...) + sf.lock.Unlock() + return + + case ch := <-sf.copy: + // Somebody wants a copy of the current trie, grant them + ch <- sf.db.CopyTrie(sf.trie) + + default: + // No termination request yet, prefetch the next entry + if _, ok := sf.seen[string(task)]; ok { + sf.dups++ + } else { + sf.trie.TryGet(task) + sf.seen[string(task)] = struct{}{} + } + } + } + + case ch := <-sf.copy: + // Somebody wants a copy of the current trie, grant them + ch <- sf.db.CopyTrie(sf.trie) + + case <-sf.stop: + // Termination is requested, abort and leave remaining tasks + return + } + } +} diff --git a/core/state/trie_prefetcher_test.go b/core/state/trie_prefetcher_test.go new file mode 100644 index 0000000000..45202195f2 --- /dev/null +++ b/core/state/trie_prefetcher_test.go @@ -0,0 +1,120 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package state + +import ( + "math/big" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ethereum/go-ethereum/common" +) + +func filledStateDB() *StateDB { + state, _ := New(common.Hash{}, NewDatabase(rawdb.NewMemoryDatabase()), nil) + + // Create an account and check if the retrieved balance is correct + addr := common.HexToAddress("0xaffeaffeaffeaffeaffeaffeaffeaffeaffeaffe") + skey := common.HexToHash("aaa") + sval := common.HexToHash("bbb") + + state.SetBalance(addr, big.NewInt(42)) // Change the account trie + state.SetCode(addr, []byte("hello")) // Change an external metadata + state.SetState(addr, skey, sval) // Change the storage trie + for i := 0; i < 100; i++ { + sk := common.BigToHash(big.NewInt(int64(i))) + state.SetState(addr, sk, sk) // Change the storage trie + } + return state +} + +func TestCopyAndClose(t *testing.T) { + db := filledStateDB() + prefetcher := newTriePrefetcher(db.db, db.originalRoot, "") + skey := common.HexToHash("aaa") + prefetcher.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + prefetcher.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + time.Sleep(1 * time.Second) + a := prefetcher.trie(db.originalRoot) + prefetcher.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + b := prefetcher.trie(db.originalRoot) + cpy := prefetcher.copy() + cpy.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + cpy.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + c := cpy.trie(db.originalRoot) + prefetcher.close() + cpy2 := cpy.copy() + cpy2.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + d := cpy2.trie(db.originalRoot) + cpy.close() + cpy2.close() + if a.Hash() != b.Hash() || a.Hash() != c.Hash() || a.Hash() != d.Hash() { + t.Fatalf("Invalid trie, hashes should be equal: %v %v %v %v", a.Hash(), b.Hash(), c.Hash(), d.Hash()) + } +} + +func TestUseAfterClose(t *testing.T) { + db := filledStateDB() + prefetcher := newTriePrefetcher(db.db, db.originalRoot, "") + skey := common.HexToHash("aaa") + prefetcher.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + a := prefetcher.trie(db.originalRoot) + prefetcher.close() + b := prefetcher.trie(db.originalRoot) + if a == nil { + t.Fatal("Prefetching before close should not return nil") + } + if b != nil { + t.Fatal("Trie after close should return nil") + } +} + +func TestCopyClose(t *testing.T) { + db := filledStateDB() + prefetcher := newTriePrefetcher(db.db, db.originalRoot, "") + skey := common.HexToHash("aaa") + prefetcher.prefetch(db.originalRoot, [][]byte{skey.Bytes()}) + cpy := prefetcher.copy() + a := prefetcher.trie(db.originalRoot) + b := cpy.trie(db.originalRoot) + prefetcher.close() + c := prefetcher.trie(db.originalRoot) + d := cpy.trie(db.originalRoot) + if a == nil { + t.Fatal("Prefetching before close should not return nil") + } + if b == nil { + t.Fatal("Copy trie should return nil") + } + if c != nil { + t.Fatal("Trie after close should return nil") + } + if d == nil { + t.Fatal("Copy trie should not return nil") + } +} diff --git a/core/state_manager.go b/core/state_manager.go new file mode 100644 index 0000000000..4383ece044 --- /dev/null +++ b/core/state_manager.go @@ -0,0 +1,152 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "fmt" + "math/rand" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" +) + +const ( + commitInterval = 4096 + tipBufferSize = 16 +) + +type TrieWriter interface { + InsertTrie(block *types.Block) error // Insert reference to trie [root] + AcceptTrie(block *types.Block) error // Mark [root] as part of an accepted block + RejectTrie(block *types.Block) error // Notify TrieWriter that the block containing [root] has been rejected + Shutdown() error +} + +type TrieDB interface { + Reference(child common.Hash, parent common.Hash) + Dereference(root common.Hash) + Commit(root common.Hash, report bool, callback func(common.Hash)) error + Size() (common.StorageSize, common.StorageSize) + Cap(limit common.StorageSize) error +} + +func NewTrieWriter(db TrieDB, config *CacheConfig) TrieWriter { + if config.Pruning { + return &cappedMemoryTrieWriter{ + TrieDB: db, + memoryCap: common.StorageSize(config.TrieDirtyLimit) * 1024 * 1024, + imageCap: 4 * 1024 * 1024, + commitInterval: commitInterval, + tipBuffer: make([]common.Hash, tipBufferSize), + randomizedInterval: uint64(rand.Int63n(commitInterval)) + commitInterval, + } + } else { + return &noPruningTrieWriter{ + TrieDB: db, + } + } +} + +type noPruningTrieWriter struct { + TrieDB +} + +func (np *noPruningTrieWriter) InsertTrie(block *types.Block) error { + return np.TrieDB.Commit(block.Root(), false, nil) +} + +func (np *noPruningTrieWriter) AcceptTrie(block *types.Block) error { return nil } + +func (np *noPruningTrieWriter) RejectTrie(block *types.Block) error { return nil } + +func (np *noPruningTrieWriter) Shutdown() error { return nil } + +type cappedMemoryTrieWriter struct { + TrieDB + memoryCap common.StorageSize + imageCap common.StorageSize + commitInterval, randomizedInterval uint64 + + lastPos int + tipBuffer []common.Hash +} + +func (cm *cappedMemoryTrieWriter) InsertTrie(block *types.Block) error { + cm.TrieDB.Reference(block.Root(), common.Hash{}) + + nodes, imgs := cm.TrieDB.Size() + if nodes > cm.memoryCap || imgs > cm.imageCap { + return cm.TrieDB.Cap(cm.memoryCap - ethdb.IdealBatchSize) + } + + return nil +} + +func (cm *cappedMemoryTrieWriter) AcceptTrie(block *types.Block) error { + root := block.Root() + + // Attempt to dereference roots at least [tipBufferSize] old (so queries at tip + // can still be completed). + // + // Note: It is safe to dereference roots that have been committed to disk + // (they are no-ops). + nextPos := (cm.lastPos + 1) % tipBufferSize + if cm.tipBuffer[nextPos] != (common.Hash{}) { + cm.TrieDB.Dereference(cm.tipBuffer[nextPos]) + } + cm.tipBuffer[nextPos] = root + cm.lastPos = nextPos + + // Commit this root if we haven't committed an accepted block root within + // the desired interval. + // Note: a randomized interval is added here to ensure that pruning nodes + // do not all only commit at the exact same heights. + if height := block.NumberU64(); height%cm.commitInterval == 0 || height%cm.randomizedInterval == 0 { + if err := cm.TrieDB.Commit(root, true, nil); err != nil { + return fmt.Errorf("failed to commit trie for block %s: %w", block.Hash().Hex(), err) + } + } + return nil +} + +func (cm *cappedMemoryTrieWriter) RejectTrie(block *types.Block) error { + cm.TrieDB.Dereference(block.Root()) + return nil +} + +func (cm *cappedMemoryTrieWriter) Shutdown() error { + // If [tipBuffer] entry is empty, no need to do any cleanup on + // shutdown. + if cm.tipBuffer[cm.lastPos] == (common.Hash{}) { + return nil + } + + // Attempt to commit last item added to [dereferenceQueue] on shutdown to avoid + // re-processing the state on the next startup. + return cm.TrieDB.Commit(cm.tipBuffer[cm.lastPos], true, nil) +} diff --git a/core/state_manager_test.go b/core/state_manager_test.go new file mode 100644 index 0000000000..e2210f4b0a --- /dev/null +++ b/core/state_manager_test.go @@ -0,0 +1,116 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package core + +import ( + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + + "github.com/ethereum/go-ethereum/common" + "github.com/stretchr/testify/assert" +) + +type MockTrieDB struct { + LastReference common.Hash + LastDereference common.Hash + LastCommit common.Hash +} + +func (t *MockTrieDB) Reference(child common.Hash, parent common.Hash) { + t.LastReference = child +} + +func (t *MockTrieDB) Dereference(root common.Hash) { + t.LastDereference = root +} + +func (t *MockTrieDB) Commit(root common.Hash, report bool, callback func(common.Hash)) error { + t.LastCommit = root + return nil +} + +func (t *MockTrieDB) Size() (common.StorageSize, common.StorageSize) { + return 0, 0 +} + +func (t *MockTrieDB) Cap(limit common.StorageSize) error { + return nil +} + +func TestCappedMemoryTrieWriter(t *testing.T) { + m := &MockTrieDB{} + w := NewTrieWriter(m, &CacheConfig{Pruning: true}) + assert := assert.New(t) + for i := 0; i < commitInterval+1; i++ { + bigI := big.NewInt(int64(i)) + block := types.NewBlock( + &types.Header{ + Root: common.BigToHash(bigI), + Number: bigI, + }, + nil, nil, nil, nil, + ) + + assert.NoError(w.InsertTrie(block)) + assert.Equal(block.Root(), m.LastReference, "should not have referenced block on insert") + assert.Equal(common.Hash{}, m.LastDereference, "should not have dereferenced block on insert") + assert.Equal(common.Hash{}, m.LastCommit, "should not have committed block on insert") + m.LastReference = common.Hash{} + + w.AcceptTrie(block) + assert.Equal(common.Hash{}, m.LastReference, "should not have referenced block on accept") + if i < tipBufferSize { + assert.Equal(common.Hash{}, m.LastDereference, "should not have dereferenced block on accept") + } else { + assert.Equal(common.BigToHash(big.NewInt(int64(i-tipBufferSize))), m.LastDereference, "should have dereferenced old block on last accept") + m.LastDereference = common.Hash{} + } + if i < commitInterval { + assert.Equal(common.Hash{}, m.LastCommit, "should not have committed block on accept") + } else { + assert.Equal(block.Root(), m.LastCommit, "should have committed block after commitInterval") + m.LastCommit = common.Hash{} + } + + w.RejectTrie(block) + assert.Equal(common.Hash{}, m.LastReference, "should not have referenced block on reject") + assert.Equal(block.Root(), m.LastDereference, "should have dereferenced block on reject") + assert.Equal(common.Hash{}, m.LastCommit, "should not have committed block on reject") + m.LastDereference = common.Hash{} + } +} + +func TestNoPruningTrieWriter(t *testing.T) { + m := &MockTrieDB{} + w := NewTrieWriter(m, &CacheConfig{}) + assert := assert.New(t) + for i := 0; i < tipBufferSize+1; i++ { + bigI := big.NewInt(int64(i)) + block := types.NewBlock( + &types.Header{ + Root: common.BigToHash(bigI), + Number: bigI, + }, + nil, nil, nil, nil, + ) + + assert.NoError(w.InsertTrie(block)) + assert.Equal(common.Hash{}, m.LastReference, "should not have referenced block on insert") + assert.Equal(common.Hash{}, m.LastDereference, "should not have dereferenced block on insert") + assert.Equal(block.Root(), m.LastCommit, "should have committed block on insert") + m.LastCommit = common.Hash{} + + w.AcceptTrie(block) + assert.Equal(common.Hash{}, m.LastReference, "should not have referenced block on accept") + assert.Equal(common.Hash{}, m.LastDereference, "should not have dereferenced block on accept") + assert.Equal(common.Hash{}, m.LastCommit, "should not have committed block on accept") + + w.RejectTrie(block) + assert.Equal(common.Hash{}, m.LastReference, "should not have referenced block on reject") + assert.Equal(common.Hash{}, m.LastDereference, "should not have dereferenced block on reject") + assert.Equal(common.Hash{}, m.LastCommit, "should not have committed block on reject") + } +} diff --git a/core/state_prefetcher.go b/core/state_prefetcher.go new file mode 100644 index 0000000000..a0465fa9e3 --- /dev/null +++ b/core/state_prefetcher.go @@ -0,0 +1,105 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "math/big" + "sync/atomic" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" +) + +// statePrefetcher is a basic Prefetcher, which blindly executes a block on top +// of an arbitrary state with the goal of prefetching potentially useful state +// data from disk before the main block processor start executing. +type statePrefetcher struct { + config *params.ChainConfig // Chain configuration options + bc *BlockChain // Canonical block chain + engine consensus.Engine // Consensus engine used for block rewards +} + +// newStatePrefetcher initialises a new statePrefetcher. +func newStatePrefetcher(config *params.ChainConfig, bc *BlockChain, engine consensus.Engine) *statePrefetcher { + return &statePrefetcher{ + config: config, + bc: bc, + engine: engine, + } +} + +// Prefetch processes the state changes according to the Ethereum rules by running +// the transaction messages using the statedb, but any changes are discarded. The +// only goal is to pre-cache transaction signatures and state trie nodes. +func (p *statePrefetcher) Prefetch(block *types.Block, statedb *state.StateDB, cfg vm.Config, interrupt *uint32) { + var ( + header = block.Header() + gaspool = new(GasPool).AddGas(block.GasLimit()) + blockContext = NewEVMBlockContext(header, p.bc, nil) + evm = vm.NewEVM(blockContext, vm.TxContext{}, statedb, p.config, cfg) + signer = types.MakeSigner(p.config, header.Number, new(big.Int).SetUint64(header.Time)) + ) + // Iterate over and process the individual transactions + byzantium := p.config.IsByzantium(block.Number()) + for i, tx := range block.Transactions() { + // If block precaching was interrupted, abort + if interrupt != nil && atomic.LoadUint32(interrupt) == 1 { + return + } + // Convert the transaction into an executable message and pre-cache its sender + msg, err := tx.AsMessage(signer, header.BaseFee) + if err != nil { + return // Also invalid block, bail out + } + statedb.Prepare(tx.Hash(), i) + if err := precacheTransaction(msg, p.config, gaspool, statedb, header, evm); err != nil { + return // Ugh, something went horribly wrong, bail out + } + // If we're pre-byzantium, pre-load trie nodes for the intermediate root + if !byzantium { + statedb.IntermediateRoot(true) + } + } + // If were post-byzantium, pre-load trie nodes for the final root hash + if byzantium { + statedb.IntermediateRoot(true) + } +} + +// precacheTransaction attempts to apply a transaction to the given state database +// and uses the input parameters for its environment. The goal is not to execute +// the transaction successfully, rather to warm up touched data slots. +func precacheTransaction(msg types.Message, config *params.ChainConfig, gaspool *GasPool, statedb *state.StateDB, header *types.Header, evm *vm.EVM) error { + // Update the evm with the new transaction context. + evm.Reset(NewEVMTxContext(msg), statedb) + // Add addresses to access list if applicable + _, err := ApplyMessage(evm, msg, gaspool) + return err +} diff --git a/core/state_processor.go b/core/state_processor.go new file mode 100644 index 0000000000..24e8282150 --- /dev/null +++ b/core/state_processor.go @@ -0,0 +1,161 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +// StateProcessor is a basic Processor, which takes care of transitioning +// state from one point to another. +// +// StateProcessor implements Processor. +type StateProcessor struct { + config *params.ChainConfig // Chain configuration options + bc *BlockChain // Canonical block chain + engine consensus.Engine // Consensus engine used for block rewards +} + +// NewStateProcessor initialises a new StateProcessor. +func NewStateProcessor(config *params.ChainConfig, bc *BlockChain, engine consensus.Engine) *StateProcessor { + return &StateProcessor{ + config: config, + bc: bc, + engine: engine, + } +} + +// Process processes the state changes according to the Ethereum rules by running +// the transaction messages using the statedb and applying any rewards to both +// the processor (coinbase) and any included uncles. +// +// Process returns the receipts and logs accumulated during the process and +// returns the amount of gas that was used in the process. If any of the +// transactions failed to execute due to insufficient gas it will return an error. +func (p *StateProcessor) Process(block *types.Block, parent *types.Header, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error) { + var ( + receipts types.Receipts + usedGas = new(uint64) + header = block.Header() + blockHash = block.Hash() + blockNumber = block.Number() + allLogs []*types.Log + gp = new(GasPool).AddGas(block.GasLimit()) + ) + + blockContext := NewEVMBlockContext(header, p.bc, nil) + vmenv := vm.NewEVM(blockContext, vm.TxContext{}, statedb, p.config, cfg) + // Iterate over and process the individual transactions + for i, tx := range block.Transactions() { + msg, err := tx.AsMessage(types.MakeSigner(p.config, header.Number, new(big.Int).SetUint64(header.Time)), header.BaseFee) + if err != nil { + return nil, nil, 0, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err) + } + statedb.Prepare(tx.Hash(), i) + receipt, err := applyTransaction(msg, p.config, p.bc, nil, gp, statedb, blockNumber, blockHash, tx, usedGas, vmenv) + if err != nil { + return nil, nil, 0, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err) + } + receipts = append(receipts, receipt) + allLogs = append(allLogs, receipt.Logs...) + } + // Finalize the block, applying any consensus engine specific extras (e.g. block rewards) + if err := p.engine.Finalize(p.bc, block, parent, statedb, receipts); err != nil { + return nil, nil, 0, fmt.Errorf("engine finalization check failed: %w", err) + } + + return receipts, allLogs, *usedGas, nil +} + +func applyTransaction(msg types.Message, config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, blockNumber *big.Int, blockHash common.Hash, tx *types.Transaction, usedGas *uint64, evm *vm.EVM) (*types.Receipt, error) { + // Create a new context to be used in the EVM environment. + txContext := NewEVMTxContext(msg) + evm.Reset(txContext, statedb) + + // Apply the transaction to the current state (included in the env). + result, err := ApplyMessage(evm, msg, gp) + if err != nil { + return nil, err + } + + // Update the state with pending changes. + var root []byte + if config.IsByzantium(blockNumber) { + statedb.Finalise(true) + } else { + root = statedb.IntermediateRoot(config.IsEIP158(blockNumber)).Bytes() + } + *usedGas += result.UsedGas + + // Create a new receipt for the transaction, storing the intermediate root and gas used + // by the tx. + receipt := &types.Receipt{Type: tx.Type(), PostState: root, CumulativeGasUsed: *usedGas} + if result.Failed() { + receipt.Status = types.ReceiptStatusFailed + } else { + receipt.Status = types.ReceiptStatusSuccessful + } + receipt.TxHash = tx.Hash() + receipt.GasUsed = result.UsedGas + + // If the transaction created a contract, store the creation address in the receipt. + if msg.To() == nil { + receipt.ContractAddress = crypto.CreateAddress(evm.TxContext.Origin, tx.Nonce()) + } + + // Set the receipt logs and create the bloom filter. + receipt.Logs = statedb.GetLogs(tx.Hash(), blockHash) + receipt.Bloom = types.CreateBloom(types.Receipts{receipt}) + receipt.BlockHash = blockHash + receipt.BlockNumber = blockNumber + receipt.TransactionIndex = uint(statedb.TxIndex()) + return receipt, err +} + +// ApplyTransaction attempts to apply a transaction to the given state database +// and uses the input parameters for its environment. It returns the receipt +// for the transaction, gas used and an error if the transaction failed, +// indicating the block was invalid. +func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error) { + msg, err := tx.AsMessage(types.MakeSigner(config, header.Number, new(big.Int).SetUint64(header.Time)), header.BaseFee) + if err != nil { + return nil, err + } + // Create a new context to be used in the EVM environment + blockContext := NewEVMBlockContext(header, bc, author) + vmenv := vm.NewEVM(blockContext, vm.TxContext{}, statedb, config, cfg) + return applyTransaction(msg, config, bc, author, gp, statedb, header.Number, header.Hash(), tx, usedGas, vmenv) +} diff --git a/core/state_transition.go b/core/state_transition.go new file mode 100644 index 0000000000..8be8d2c97f --- /dev/null +++ b/core/state_transition.go @@ -0,0 +1,367 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "fmt" + "math" + "math/big" + + "github.com/ethereum/go-ethereum/crypto" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" +) + +var emptyCodeHash = crypto.Keccak256Hash(nil) + +/* +The State Transitioning Model + +A state transition is a change made when a transaction is applied to the current world state +The state transitioning model does all the necessary work to work out a valid new state root. + +1) Nonce handling +2) Pre pay gas +3) Create a new state object if the recipient is \0*32 +4) Value transfer +== If contract creation == + 4a) Attempt to run transaction data + 4b) If valid, use result as code for the new state object +== end == +5) Run Script section +6) Derive new state root +*/ +type StateTransition struct { + gp *GasPool + msg Message + gas uint64 + gasPrice *big.Int + gasFeeCap *big.Int + gasTipCap *big.Int + initialGas uint64 + value *big.Int + data []byte + state vm.StateDB + evm *vm.EVM +} + +// Message represents a message sent to a contract. +type Message interface { + From() common.Address + To() *common.Address + + GasPrice() *big.Int + GasFeeCap() *big.Int + GasTipCap() *big.Int + Gas() uint64 + Value() *big.Int + + Nonce() uint64 + IsFake() bool + Data() []byte + AccessList() types.AccessList +} + +// ExecutionResult includes all output after executing given evm +// message no matter the execution itself is successful or not. +type ExecutionResult struct { + UsedGas uint64 // Total used gas but include the refunded gas + Err error // Any error encountered during the execution(listed in core/vm/errors.go) + ReturnData []byte // Returned data from evm(function result or data supplied with revert opcode) +} + +// Unwrap returns the internal evm error which allows us for further +// analysis outside. +func (result *ExecutionResult) Unwrap() error { + return result.Err +} + +// Failed returns the indicator whether the execution is successful or not +func (result *ExecutionResult) Failed() bool { return result.Err != nil } + +// Return is a helper function to help caller distinguish between revert reason +// and function return. Return returns the data after execution if no error occurs. +func (result *ExecutionResult) Return() []byte { + if result.Err != nil { + return nil + } + return common.CopyBytes(result.ReturnData) +} + +// Revert returns the concrete revert reason if the execution is aborted by `REVERT` +// opcode. Note the reason can be nil if no data supplied with revert opcode. +func (result *ExecutionResult) Revert() []byte { + if result.Err != vm.ErrExecutionReverted { + return nil + } + return common.CopyBytes(result.ReturnData) +} + +// IntrinsicGas computes the 'intrinsic gas' for a message with the given data. +func IntrinsicGas(data []byte, accessList types.AccessList, isContractCreation bool, isHomestead, isEIP2028 bool) (uint64, error) { + // Set the starting gas for the raw transaction + var gas uint64 + if isContractCreation && isHomestead { + gas = params.TxGasContractCreation + } else { + gas = params.TxGas + } + // Bump the required gas by the amount of transactional data + if len(data) > 0 { + // Zero and non-zero bytes are priced differently + var nz uint64 + for _, byt := range data { + if byt != 0 { + nz++ + } + } + // Make sure we don't exceed uint64 for all data combinations + nonZeroGas := params.TxDataNonZeroGasFrontier + if isEIP2028 { + nonZeroGas = params.TxDataNonZeroGasEIP2028 + } + if (math.MaxUint64-gas)/nonZeroGas < nz { + return 0, ErrGasUintOverflow + } + gas += nz * nonZeroGas + + z := uint64(len(data)) - nz + if (math.MaxUint64-gas)/params.TxDataZeroGas < z { + return 0, ErrGasUintOverflow + } + gas += z * params.TxDataZeroGas + } + if accessList != nil { + gas += uint64(len(accessList)) * params.TxAccessListAddressGas + gas += uint64(accessList.StorageKeys()) * params.TxAccessListStorageKeyGas + } + return gas, nil +} + +// NewStateTransition initialises and returns a new state transition object. +func NewStateTransition(evm *vm.EVM, msg Message, gp *GasPool) *StateTransition { + return &StateTransition{ + gp: gp, + evm: evm, + msg: msg, + gasPrice: msg.GasPrice(), + gasFeeCap: msg.GasFeeCap(), + gasTipCap: msg.GasTipCap(), + value: msg.Value(), + data: msg.Data(), + state: evm.StateDB, + } +} + +// ApplyMessage computes the new state by applying the given message +// against the old state within the environment. +// +// ApplyMessage returns the bytes returned by any EVM execution (if it took place), +// the gas used (which includes gas refunds) and an error if it failed. An error always +// indicates a core error meaning that the message would always fail for that particular +// state and would never be accepted within a block. +func ApplyMessage(evm *vm.EVM, msg Message, gp *GasPool) (*ExecutionResult, error) { + return NewStateTransition(evm, msg, gp).TransitionDb() +} + +// to returns the recipient of the message. +func (st *StateTransition) to() common.Address { + if st.msg == nil || st.msg.To() == nil /* contract creation */ { + return common.Address{} + } + return *st.msg.To() +} + +func (st *StateTransition) buyGas() error { + mgval := new(big.Int).SetUint64(st.msg.Gas()) + mgval = mgval.Mul(mgval, st.gasPrice) + balanceCheck := mgval + if st.gasFeeCap != nil { + balanceCheck = new(big.Int).SetUint64(st.msg.Gas()) + balanceCheck.Mul(balanceCheck, st.gasFeeCap) + balanceCheck.Add(balanceCheck, st.value) + } + if have, want := st.state.GetBalance(st.msg.From()), balanceCheck; have.Cmp(want) < 0 { + return fmt.Errorf("%w: address %v have %v want %v", ErrInsufficientFunds, st.msg.From().Hex(), have, want) + } + if err := st.gp.SubGas(st.msg.Gas()); err != nil { + return err + } + st.gas += st.msg.Gas() + + st.initialGas = st.msg.Gas() + st.state.SubBalance(st.msg.From(), mgval) + return nil +} + +func (st *StateTransition) preCheck() error { + // Only check transactions that are not fake + if !st.msg.IsFake() { + // Make sure this transaction's nonce is correct. + stNonce := st.state.GetNonce(st.msg.From()) + if msgNonce := st.msg.Nonce(); stNonce < msgNonce { + return fmt.Errorf("%w: address %v, tx: %d state: %d", ErrNonceTooHigh, + st.msg.From().Hex(), msgNonce, stNonce) + } else if stNonce > msgNonce { + return fmt.Errorf("%w: address %v, tx: %d state: %d", ErrNonceTooLow, + st.msg.From().Hex(), msgNonce, stNonce) + } + // Make sure the sender is an EOA + if codeHash := st.state.GetCodeHash(st.msg.From()); codeHash != emptyCodeHash && codeHash != (common.Hash{}) { + return fmt.Errorf("%w: address %v, codehash: %s", ErrSenderNoEOA, + st.msg.From().Hex(), codeHash) + } + } + // Make sure that transaction gasFeeCap is greater than the baseFee (post london) + if st.evm.ChainConfig().IsSubnetEVM(st.evm.Context.Time) { + // Skip the checks if gas fields are zero and baseFee was explicitly disabled (eth_call) + if !st.evm.Config.NoBaseFee || st.gasFeeCap.BitLen() > 0 || st.gasTipCap.BitLen() > 0 { + if l := st.gasFeeCap.BitLen(); l > 256 { + return fmt.Errorf("%w: address %v, maxFeePerGas bit length: %d", ErrFeeCapVeryHigh, + st.msg.From().Hex(), l) + } + if l := st.gasTipCap.BitLen(); l > 256 { + return fmt.Errorf("%w: address %v, maxPriorityFeePerGas bit length: %d", ErrTipVeryHigh, + st.msg.From().Hex(), l) + } + if st.gasFeeCap.Cmp(st.gasTipCap) < 0 { + return fmt.Errorf("%w: address %v, maxPriorityFeePerGas: %s, maxFeePerGas: %s", ErrTipAboveFeeCap, + st.msg.From().Hex(), st.gasTipCap, st.gasFeeCap) + } + // This will panic if baseFee is nil, but basefee presence is verified + // as part of header validation. + if st.gasFeeCap.Cmp(st.evm.Context.BaseFee) < 0 { + return fmt.Errorf("%w: address %v, maxFeePerGas: %s baseFee: %s", ErrFeeCapTooLow, + st.msg.From().Hex(), st.gasFeeCap, st.evm.Context.BaseFee) + } + } + } + return st.buyGas() +} + +// TransitionDb will transition the state by applying the current message and +// returning the evm execution result with following fields. +// +// - used gas: +// total gas used (including gas being refunded) +// - returndata: +// the returned data from evm +// - concrete execution error: +// various **EVM** error which aborts the execution, +// e.g. ErrOutOfGas, ErrExecutionReverted +// +// However if any consensus issue encountered, return the error directly with +// nil evm execution result. +func (st *StateTransition) TransitionDb() (*ExecutionResult, error) { + // First check this message satisfies all consensus rules before + // applying the message. The rules include these clauses + // + // 1. the nonce of the message caller is correct + // 2. caller has enough balance to cover transaction fee(gaslimit * gasprice) + // 3. the amount of gas required is available in the block + // 4. the purchased gas is enough to cover intrinsic usage + // 5. there is no overflow when calculating intrinsic gas + // 6. caller has enough balance to cover asset transfer for **topmost** call + + // Check clauses 1-3, buy gas if everything is correct + if err := st.preCheck(); err != nil { + return nil, err + } + msg := st.msg + sender := vm.AccountRef(msg.From()) + homestead := st.evm.ChainConfig().IsHomestead(st.evm.Context.BlockNumber) + istanbul := st.evm.ChainConfig().IsIstanbul(st.evm.Context.BlockNumber) + subnetEVM := st.evm.ChainConfig().IsSubnetEVM(st.evm.Context.Time) + + contractCreation := msg.To() == nil + + // Check clauses 4-5, subtract intrinsic gas if everything is correct + gas, err := IntrinsicGas(st.data, st.msg.AccessList(), contractCreation, homestead, istanbul) + if err != nil { + return nil, err + } + if st.gas < gas { + return nil, fmt.Errorf("%w: have %d, want %d", ErrIntrinsicGas, st.gas, gas) + } + st.gas -= gas + + // Check clause 6 + if msg.Value().Sign() > 0 && !st.evm.Context.CanTransfer(st.state, msg.From(), msg.Value()) { + return nil, fmt.Errorf("%w: address %v", ErrInsufficientFundsForTransfer, msg.From().Hex()) + } + + // Set up the initial access list. + if rules := st.evm.ChainConfig().AvalancheRules(st.evm.Context.BlockNumber, st.evm.Context.Time); rules.IsSubnetEVM { + st.state.PrepareAccessList(msg.From(), msg.To(), vm.ActivePrecompiles(rules), msg.AccessList()) + } + var ( + ret []byte + vmerr error // vm errors do not effect consensus and are therefore not assigned to err + ) + if contractCreation { + ret, _, st.gas, vmerr = st.evm.Create(sender, st.data, st.gas, st.value) + } else { + // Increment the nonce for the next transaction + st.state.SetNonce(msg.From(), st.state.GetNonce(sender.Address())+1) + ret, st.gas, vmerr = st.evm.Call(sender, st.to(), st.data, st.gas, st.value) + } + st.refundGas(subnetEVM) + st.state.AddBalance(st.evm.Context.Coinbase, new(big.Int).Mul(new(big.Int).SetUint64(st.gasUsed()), st.gasPrice)) + + return &ExecutionResult{ + UsedGas: st.gasUsed(), + Err: vmerr, + ReturnData: ret, + }, nil +} + +func (st *StateTransition) refundGas(subnetEVM bool) { + // Inspired by: https://gist.github.com/holiman/460f952716a74eeb9ab358bb1836d821#gistcomment-3642048 + if !subnetEVM { + // Apply refund counter, capped to half of the used gas. + refund := st.gasUsed() / 2 + if refund > st.state.GetRefund() { + refund = st.state.GetRefund() + } + st.gas += refund + } + // Return ETH for remaining gas, exchanged at the original rate. + remaining := new(big.Int).Mul(new(big.Int).SetUint64(st.gas), st.gasPrice) + st.state.AddBalance(st.msg.From(), remaining) + + // Also return remaining gas to the block gas counter so it is + // available for the next transaction. + st.gp.AddGas(st.gas) +} + +// gasUsed returns the amount of gas used up by the state transition. +func (st *StateTransition) gasUsed() uint64 { + return st.initialGas - st.gas +} diff --git a/core/test_blockchain.go b/core/test_blockchain.go new file mode 100644 index 0000000000..9c9156703a --- /dev/null +++ b/core/test_blockchain.go @@ -0,0 +1,1495 @@ +// (c) 2020-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package core + +import ( + "fmt" + "math/big" + "strings" + "testing" + + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +type ChainTest struct { + Name string + testFunc func( + t *testing.T, + create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error), + ) +} + +var tests = []ChainTest{ + { + "InsertChainAcceptSingleBlock", + TestInsertChainAcceptSingleBlock, + }, + { + "InsertForkedChain", + TestInsertLongForkedChain, + }, + { + "AcceptNonCanonicalBlock", + TestAcceptNonCanonicalBlock, + }, + { + "SetPreferenceRewind", + TestSetPreferenceRewind, + }, + { + "BuildOnVariousStages", + TestBuildOnVariousStages, + }, + { + "EmptyBlocks", + TestEmptyBlocks, + }, + { + "AcceptBlockIdenticalStateRoot", + TestAcceptBlockIdenticalStateRoot, + }, + { + "ReprocessAcceptBlockIdenticalStateRoot", + TestReprocessAcceptBlockIdenticalStateRoot, + }, + { + "GenerateChainInvalidBlockFee", + TestGenerateChainInvalidBlockFee, + }, + { + "InsertChainInvalidBlockFee", + TestInsertChainInvalidBlockFee, + }, + { + "InsertChainValidBlockFee", + TestInsertChainValidBlockFee, + }, +} + +func copyMemDB(db ethdb.Database) (ethdb.Database, error) { + newDB := rawdb.NewMemoryDatabase() + iter := db.NewIterator(nil, nil) + defer iter.Release() + for iter.Next() { + if err := newDB.Put(iter.Key(), iter.Value()); err != nil { + return nil, err + } + } + + return newDB, nil +} + +// checkBlockChainState creates a new BlockChain instance and checks that exporting each block from +// genesis to last acceptd from the original instance yields the same last accepted block and state +// root. +// Additionally, create another BlockChain instance from [originalDB] to ensure that BlockChain is +// persisted correctly through a restart. +func checkBlockChainState( + t *testing.T, + bc *BlockChain, + genesis *Genesis, + originalDB ethdb.Database, + create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error), + checkState func(sdb *state.StateDB) error, +) (*BlockChain, *BlockChain, *BlockChain) { + var ( + chainConfig = bc.Config() + lastAcceptedBlock = bc.LastAcceptedBlock() + newDB = rawdb.NewMemoryDatabase() + ) + + acceptedState, err := bc.StateAt(lastAcceptedBlock.Root()) + if err != nil { + t.Fatal(err) + } + if err := checkState(acceptedState); err != nil { + t.Fatalf("Check state failed for original blockchain due to: %s", err) + } + + _ = genesis.MustCommit(newDB) + + newBlockChain, err := create(newDB, chainConfig, common.Hash{}) + if err != nil { + t.Fatalf("Failed to create new blockchain instance: %s", err) + } + + for i := uint64(1); i <= lastAcceptedBlock.NumberU64(); i++ { + block := bc.GetBlockByNumber(i) + if block == nil { + t.Fatalf("Failed to retrieve block by number %d from original chain", i) + } + if err := newBlockChain.InsertBlock(block); err != nil { + t.Fatalf("Failed to insert block %s:%d due to %s", block.Hash().Hex(), block.NumberU64(), err) + } + if err := newBlockChain.Accept(block); err != nil { + t.Fatalf("Failed to accept block %s:%d due to %s", block.Hash().Hex(), block.NumberU64(), err) + } + } + + newLastAcceptedBlock := newBlockChain.LastAcceptedBlock() + if newLastAcceptedBlock.Hash() != lastAcceptedBlock.Hash() { + t.Fatalf("Expected new blockchain to have last accepted block %s:%d, but found %s:%d", lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64(), newLastAcceptedBlock.Hash().Hex(), newLastAcceptedBlock.NumberU64()) + } + + // Check that the state of [newBlockChain] passes the check + acceptedState, err = newBlockChain.StateAt(lastAcceptedBlock.Root()) + if err != nil { + t.Fatal(err) + } + if err := checkState(acceptedState); err != nil { + t.Fatalf("Check state failed for newly generated blockchain due to: %s", err) + } + + // Copy the database over to prevent any issues when re-using [originalDB] after this call. + originalDB, err = copyMemDB(originalDB) + if err != nil { + t.Fatal(err) + } + restartedChain, err := create(originalDB, chainConfig, lastAcceptedBlock.Hash()) + if err != nil { + t.Fatal(err) + } + defer restartedChain.Stop() + if currentBlock := restartedChain.CurrentBlock(); currentBlock.Hash() != lastAcceptedBlock.Hash() { + t.Fatalf("Expected restarted chain to have current block %s:%d, but found %s:%d", lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + if restartedLastAcceptedBlock := restartedChain.LastAcceptedBlock(); restartedLastAcceptedBlock.Hash() != lastAcceptedBlock.Hash() { + t.Fatalf("Expected restarted chain to have current block %s:%d, but found %s:%d", lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64(), restartedLastAcceptedBlock.Hash().Hex(), restartedLastAcceptedBlock.NumberU64()) + } + + // Check that the state of [restartedChain] passes the check + acceptedState, err = restartedChain.StateAt(lastAcceptedBlock.Root()) + if err != nil { + t.Fatal(err) + } + if err := checkState(acceptedState); err != nil { + t.Fatalf("Check state failed for restarted blockchain due to: %s", err) + } + + return bc, newBlockChain, restartedChain +} + +func TestInsertChainAcceptSingleBlock(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + // This call generates a chain of 3 blocks. + signer := types.HomesteadSigner{} + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 3, 10, func(i int, gen *BlockGen) { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + }) + if err != nil { + t.Fatal(err) + } + + // Insert three blocks into the chain and accept only the first block. + if _, err := blockchain.InsertChain(chain); err != nil { + t.Fatal(err) + } + if err := blockchain.Accept(chain[0]); err != nil { + t.Fatal(err) + } + + // check the state of the last accepted block + checkState := func(sdb *state.StateDB) error { + nonce := sdb.GetNonce(addr1) + if nonce != 1 { + return fmt.Errorf("expected nonce addr1: 1, found nonce: %d", nonce) + } + transferredFunds := big.NewInt(10000) + balance1 := sdb.GetBalance(addr1) + expectedBalance1 := new(big.Int).Sub(genesisBalance, transferredFunds) + if balance1.Cmp(expectedBalance1) != 0 { + return fmt.Errorf("expected addr1 balance: %d, found balance: %d", expectedBalance1, balance1) + } + + balance2 := sdb.GetBalance(addr2) + expectedBalance2 := transferredFunds + if balance2.Cmp(expectedBalance2) != 0 { + return fmt.Errorf("expected addr2 balance: %d, found balance: %d", expectedBalance2, balance2) + } + + nonce = sdb.GetNonce(addr2) + if nonce != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce: %d", nonce) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +func TestInsertLongForkedChain(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + numBlocks := 129 + signer := types.HomesteadSigner{} + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain1, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, numBlocks, 10, func(i int, gen *BlockGen) { + // Generate a transaction to create a unique block + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + }) + if err != nil { + t.Fatal(err) + } + // Generate the forked chain to be longer than the original chain to check for a regression where + // a longer chain can trigger a reorg. + chain2, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, numBlocks+1, 10, func(i int, gen *BlockGen) { + // Generate a transaction with a different amount to ensure [chain2] is different than [chain1]. + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(5000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + }) + if err != nil { + t.Fatal(err) + } + + if blockchain.snaps != nil { + if want, got := 1, blockchain.snaps.NumBlockLayers(); got != want { + t.Fatalf("incorrect snapshot layer count; got %d, want %d", got, want) + } + } + + // Insert both chains. + if _, err := blockchain.InsertChain(chain1); err != nil { + t.Fatal(err) + } + + if blockchain.snaps != nil { + if want, got := 1+len(chain1), blockchain.snaps.NumBlockLayers(); got != want { + t.Fatalf("incorrect snapshot layer count; got %d, want %d", got, want) + } + } + + if _, err := blockchain.InsertChain(chain2); err != nil { + t.Fatal(err) + } + + if blockchain.snaps != nil { + if want, got := 1+len(chain1)+len(chain2), blockchain.snaps.NumBlockLayers(); got != want { + t.Fatalf("incorrect snapshot layer count; got %d, want %d", got, want) + } + } + + currentBlock := blockchain.CurrentBlock() + expectedCurrentBlock := chain1[len(chain1)-1] + if currentBlock.Hash() != expectedCurrentBlock.Hash() { + t.Fatalf("Expected current block to be %s:%d, but found %s%d", expectedCurrentBlock.Hash().Hex(), expectedCurrentBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + + if err := blockchain.ValidateCanonicalChain(); err != nil { + t.Fatal(err) + } + + // Accept the first block in [chain1], reject all blocks in [chain2] to + // mimic the order that the consensus engine will call Accept/Reject in + // and then Accept the rest of the blocks in [chain1]. + if err := blockchain.Accept(chain1[0]); err != nil { + t.Fatal(err) + } + + if blockchain.snaps != nil { + // Snap layer count should be 1 fewer + if want, got := len(chain1)+len(chain2), blockchain.snaps.NumBlockLayers(); got != want { + t.Fatalf("incorrect snapshot layer count; got %d, want %d", got, want) + } + } + + for i := 0; i < len(chain2); i++ { + if err := blockchain.Reject(chain2[i]); err != nil { + t.Fatal(err) + } + + if blockchain.snaps != nil { + // Snap layer count should decrease by 1 per Reject + if want, got := len(chain1)+len(chain2)-i-1, blockchain.snaps.NumBlockLayers(); got != want { + t.Fatalf("incorrect snapshot layer count; got %d, want %d", got, want) + } + } + } + + if blockchain.snaps != nil { + if want, got := len(chain1), blockchain.snaps.NumBlockLayers(); got != want { + t.Fatalf("incorrect snapshot layer count; got %d, want %d", got, want) + } + } + + for i := 1; i < len(chain1); i++ { + if err := blockchain.Accept(chain1[i]); err != nil { + t.Fatal(err) + } + + if blockchain.snaps != nil { + // Snap layer count should decrease by 1 per Accept + if want, got := len(chain1)-i, blockchain.snaps.NumBlockLayers(); got != want { + t.Fatalf("incorrect snapshot layer count; got %d, want %d", got, want) + } + } + } + + lastAcceptedBlock := blockchain.LastAcceptedBlock() + expectedLastAcceptedBlock := chain1[len(chain1)-1] + if lastAcceptedBlock.Hash() != expectedLastAcceptedBlock.Hash() { + t.Fatalf("Expected last accepted block to be %s:%d, but found %s%d", expectedLastAcceptedBlock.Hash().Hex(), expectedLastAcceptedBlock.NumberU64(), lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64()) + } + if err := blockchain.ValidateCanonicalChain(); err != nil { + t.Fatal(err) + } + + // check the state of the last accepted block + checkState := func(sdb *state.StateDB) error { + nonce1 := sdb.GetNonce(addr1) + if nonce1 != 129 { + return fmt.Errorf("expected addr1 nonce: 129, found nonce %d", nonce1) + } + balance1 := sdb.GetBalance(addr1) + transferredFunds := new(big.Int).Mul(big.NewInt(129), big.NewInt(10000)) + expectedBalance := new(big.Int).Sub(genesisBalance, transferredFunds) + if balance1.Cmp(expectedBalance) != 0 { + return fmt.Errorf("expected addr1 balance: %d, found balance: %d", expectedBalance, balance1) + } + nonce2 := sdb.GetNonce(addr2) + if nonce2 != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce: %d", nonce2) + } + balance2 := sdb.GetBalance(addr2) + if balance2.Cmp(transferredFunds) != 0 { + return fmt.Errorf("expected addr2 balance: %d, found balance: %d", transferredFunds, balance2) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +func TestAcceptNonCanonicalBlock(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + numBlocks := 3 + signer := types.HomesteadSigner{} + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain1, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, numBlocks, 10, func(i int, gen *BlockGen) { + // Generate a transaction to create a unique block + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + }) + if err != nil { + t.Fatal(err) + } + chain2, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, numBlocks, 10, func(i int, gen *BlockGen) { + // Generate a transaction with a different amount to create a chain of blocks different from [chain1] + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(5000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + }) + if err != nil { + t.Fatal(err) + } + + // Insert three blocks into the chain and accept only the first. + if _, err := blockchain.InsertChain(chain1); err != nil { + t.Fatal(err) + } + if _, err := blockchain.InsertChain(chain2); err != nil { + t.Fatal(err) + } + + currentBlock := blockchain.CurrentBlock() + expectedCurrentBlock := chain1[len(chain1)-1] + if currentBlock.Hash() != expectedCurrentBlock.Hash() { + t.Fatalf("Expected current block to be %s:%d, but found %s%d", expectedCurrentBlock.Hash().Hex(), expectedCurrentBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + + if err := blockchain.ValidateCanonicalChain(); err != nil { + t.Fatal(err) + } + + // Accept the first block in [chain2], reject all blocks in [chain1] to + // mimic the order that the consensus engine will call Accept/Reject in. + if err := blockchain.Accept(chain2[0]); err != nil { + t.Fatal(err) + } + for i := 0; i < len(chain1); i++ { + if err := blockchain.Reject(chain1[i]); err != nil { + t.Fatal(err) + } + } + + lastAcceptedBlock := blockchain.LastAcceptedBlock() + expectedLastAcceptedBlock := chain2[0] + if lastAcceptedBlock.Hash() != expectedLastAcceptedBlock.Hash() { + t.Fatalf("Expected last accepted block to be %s:%d, but found %s%d", expectedLastAcceptedBlock.Hash().Hex(), expectedLastAcceptedBlock.NumberU64(), lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64()) + } + if err := blockchain.ValidateCanonicalChain(); err != nil { + t.Fatal(err) + } + + // check the state of the last accepted block + checkState := func(sdb *state.StateDB) error { + nonce1 := sdb.GetNonce(addr1) + if nonce1 != 1 { + return fmt.Errorf("expected addr1 nonce: 1, found nonce: %d", nonce1) + } + balance1 := sdb.GetBalance(addr1) + transferredFunds := big.NewInt(5000) + expectedBalance := new(big.Int).Sub(genesisBalance, transferredFunds) + if balance1.Cmp(expectedBalance) != 0 { + return fmt.Errorf("expected balance1: %d, found balance: %d", expectedBalance, balance1) + } + nonce2 := sdb.GetNonce(addr2) + if nonce2 != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce %d", nonce2) + } + balance2 := sdb.GetBalance(addr2) + if balance2.Cmp(transferredFunds) != 0 { + return fmt.Errorf("expected balance2: %d, found %d", transferredFunds, balance2) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +func TestSetPreferenceRewind(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + numBlocks := 3 + signer := types.HomesteadSigner{} + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, numBlocks, 10, func(i int, gen *BlockGen) { + // Generate a transaction to create a unique block + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + }) + if err != nil { + t.Fatal(err) + } + + // Insert three blocks into the chain and accept only the first. + if _, err := blockchain.InsertChain(chain); err != nil { + t.Fatal(err) + } + + currentBlock := blockchain.CurrentBlock() + expectedCurrentBlock := chain[len(chain)-1] + if currentBlock.Hash() != expectedCurrentBlock.Hash() { + t.Fatalf("Expected current block to be %s:%d, but found %s%d", expectedCurrentBlock.Hash().Hex(), expectedCurrentBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + + if err := blockchain.ValidateCanonicalChain(); err != nil { + t.Fatal(err) + } + + // SetPreference to an ancestor of the currently preferred block. Test that this unlikely, but possible behavior + // is handled correctly. + if err := blockchain.SetPreference(chain[0]); err != nil { + t.Fatal(err) + } + + currentBlock = blockchain.CurrentBlock() + expectedCurrentBlock = chain[0] + if currentBlock.Hash() != expectedCurrentBlock.Hash() { + t.Fatalf("Expected current block to be %s:%d, but found %s%d", expectedCurrentBlock.Hash().Hex(), expectedCurrentBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + + lastAcceptedBlock := blockchain.LastAcceptedBlock() + expectedLastAcceptedBlock := blockchain.Genesis() + if lastAcceptedBlock.Hash() != expectedLastAcceptedBlock.Hash() { + t.Fatalf("Expected last accepted block to be %s:%d, but found %s%d", expectedLastAcceptedBlock.Hash().Hex(), expectedLastAcceptedBlock.NumberU64(), lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64()) + } + if err := blockchain.ValidateCanonicalChain(); err != nil { + t.Fatal(err) + } + // check the state of the last accepted block + checkGenesisState := func(sdb *state.StateDB) error { + nonce1 := sdb.GetNonce(addr1) + if nonce1 != 0 { + return fmt.Errorf("expected addr1 nonce: 0, found nonce: %d", nonce1) + } + balance1 := sdb.GetBalance(addr1) + if balance1.Cmp(genesisBalance) != 0 { + return fmt.Errorf("expected addr1 balance: %d, found balance: %d", genesisBalance, balance1) + } + nonce2 := sdb.GetNonce(addr2) + if nonce2 != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce: %d", nonce2) + } + balance2 := sdb.GetBalance(addr2) + if balance2.Cmp(big.NewInt(0)) != 0 { + return fmt.Errorf("expected addr2 balance: 0, found balance %d", balance2) + } + return nil + } + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkGenesisState) + + if err := blockchain.Accept(chain[0]); err != nil { + t.Fatal(err) + } + lastAcceptedBlock = blockchain.LastAcceptedBlock() + expectedLastAcceptedBlock = chain[0] + if lastAcceptedBlock.Hash() != expectedLastAcceptedBlock.Hash() { + t.Fatalf("Expected last accepted block to be %s:%d, but found %s%d", expectedLastAcceptedBlock.Hash().Hex(), expectedLastAcceptedBlock.NumberU64(), lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64()) + } + if err := blockchain.ValidateCanonicalChain(); err != nil { + t.Fatal(err) + } + checkUpdatedState := func(sdb *state.StateDB) error { + nonce := sdb.GetNonce(addr1) + if nonce != 1 { + return fmt.Errorf("expected addr1 nonce: 1, found nonce: %d", nonce) + } + transferredFunds := big.NewInt(10000) + balance1 := sdb.GetBalance(addr1) + expectedBalance1 := new(big.Int).Sub(genesisBalance, transferredFunds) + if balance1.Cmp(expectedBalance1) != 0 { + return fmt.Errorf("expected addr1 balance: %d, found balance %d", expectedBalance1, balance1) + } + + balance2 := sdb.GetBalance(addr2) + expectedBalance2 := transferredFunds + if balance2.Cmp(expectedBalance2) != 0 { + return fmt.Errorf("expected addr2 balance: %d, found balance: %d", expectedBalance2, balance2) + } + + nonce = sdb.GetNonce(addr2) + if nonce != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce: %d", nonce) + } + return nil + } + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkUpdatedState) +} + +func TestBuildOnVariousStages(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + key3, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + addr3 = crypto.PubkeyToAddress(key3.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{ + addr1: {Balance: genesisBalance}, + addr3: {Balance: genesisBalance}, + }, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + // This call generates a chain of 3 blocks. + signer := types.HomesteadSigner{} + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain1, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 20, 10, func(i int, gen *BlockGen) { + // Send all funds back and forth between the two accounts + if i%2 == 0 { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, genesisBalance, params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + } else { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr1, genesisBalance, params.TxGas, nil, nil), signer, key2) + gen.AddTx(tx) + } + }) + if err != nil { + t.Fatal(err) + } + // Build second chain forked off of the 10th block in [chain1] + chain2, _, err := GenerateChain(gspec.Config, chain1[9], blockchain.engine, genDB, 10, 10, func(i int, gen *BlockGen) { + // Send all funds back and forth between the two accounts + if i%2 == 0 { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr3), addr2, genesisBalance, params.TxGas, nil, nil), signer, key3) + gen.AddTx(tx) + } else { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr3, genesisBalance, params.TxGas, nil, nil), signer, key2) + gen.AddTx(tx) + } + }) + if err != nil { + t.Fatal(err) + } + // Build third chain forked off of the 5th block in [chain1]. + // The parent of this chain will be accepted before this fork + // is inserted. + chain3, _, err := GenerateChain(gspec.Config, chain1[4], blockchain.engine, genDB, 10, 10, func(i int, gen *BlockGen) { + // Send all funds back and forth between accounts 2 and 3. + if i%2 == 0 { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr3, genesisBalance, params.TxGas, nil, nil), signer, key2) + gen.AddTx(tx) + } else { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr3), addr2, genesisBalance, params.TxGas, nil, nil), signer, key3) + gen.AddTx(tx) + } + }) + if err != nil { + t.Fatal(err) + } + + // Insert first 10 blocks from [chain1] + if _, err := blockchain.InsertChain(chain1); err != nil { + t.Fatal(err) + } + // Accept the first 5 blocks + for _, block := range chain1[0:5] { + if err := blockchain.Accept(block); err != nil { + t.Fatal(err) + } + } + // Insert the forked chain [chain2] which starts at the 10th + // block in [chain1] ie. a block that is still in processing. + if _, err := blockchain.InsertChain(chain2); err != nil { + t.Fatal(err) + } + // Insert another forked chain starting at the last accepted + // block from [chain1]. + if _, err := blockchain.InsertChain(chain3); err != nil { + t.Fatal(err) + } + // Accept the next block in [chain1] and then reject all + // of the blocks in [chain3], which would then be rejected. + if err := blockchain.Accept(chain1[5]); err != nil { + t.Fatal(err) + } + for _, block := range chain3 { + if err := blockchain.Reject(block); err != nil { + t.Fatal(err) + } + } + // Accept the rest of the blocks in [chain1] + for _, block := range chain1[6:10] { + if err := blockchain.Accept(block); err != nil { + t.Fatal(err) + } + } + + // Accept the first block in [chain2] and reject the + // subsequent blocks in [chain1] which would then be rejected. + if err := blockchain.Accept(chain2[0]); err != nil { + t.Fatal(err) + } + for _, block := range chain1[10:] { + if err := blockchain.Reject(block); err != nil { + t.Fatal(err) + } + } + + // check the state of the last accepted block + checkState := func(sdb *state.StateDB) error { + nonce := sdb.GetNonce(addr1) + if nonce != 5 { + return fmt.Errorf("expected nonce addr1: 5, found nonce: %d", nonce) + } + balance1 := sdb.GetBalance(addr1) + expectedBalance1 := genesisBalance + if balance1.Cmp(expectedBalance1) != 0 { + return fmt.Errorf("expected addr1 balance: %d, found balance: %d", expectedBalance1, balance1) + } + + balance2 := sdb.GetBalance(addr2) + expectedBalance2 := genesisBalance + if balance2.Cmp(expectedBalance2) != 0 { + return fmt.Errorf("expected addr2 balance: %d, found balance: %d", expectedBalance2, balance2) + } + + nonce = sdb.GetNonce(addr2) + if nonce != 5 { + return fmt.Errorf("expected addr2 nonce: 5, found nonce: %d", nonce) + } + + balance3 := sdb.GetBalance(addr3) + expectedBalance3 := common.Big0 + if balance3.Cmp(expectedBalance3) != 0 { + return fmt.Errorf("expected addr3 balance: %d, found balance: %d", expectedBalance3, balance3) + } + + nonce = sdb.GetNonce(addr3) + if nonce != 1 { + return fmt.Errorf("expected addr3 nonce: 1, found nonce: %d", nonce) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +func TestEmptyBlocks(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 3, 10, func(i int, gen *BlockGen) {}) + if err != nil { + t.Fatal(err) + } + + // Insert three blocks into the chain and accept only the first block. + if _, err := blockchain.InsertChain(chain); err != nil { + t.Fatal(err) + } + for _, block := range chain { + if err := blockchain.Accept(block); err != nil { + t.Fatal(err) + } + } + + // Nothing to assert about the state + checkState := func(sdb *state.StateDB) error { + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +func TestReorgReInsert(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + signer := types.HomesteadSigner{} + numBlocks := 3 + chain, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, numBlocks, 10, func(i int, gen *BlockGen) { + // Generate a transaction to create a unique block + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + }) + if err != nil { + t.Fatal(err) + } + + // Insert and accept first block + if err := blockchain.InsertBlock(chain[0]); err != nil { + t.Fatal(err) + } + if err := blockchain.Accept(chain[0]); err != nil { + t.Fatal(err) + } + // Insert block and then set preference back (rewind) to last accepted blck + if err := blockchain.InsertBlock(chain[1]); err != nil { + t.Fatal(err) + } + if err := blockchain.SetPreference(chain[0]); err != nil { + t.Fatal(err) + } + // Re-insert and accept block + if err := blockchain.InsertBlock(chain[1]); err != nil { + t.Fatal(err) + } + if err := blockchain.Accept(chain[1]); err != nil { + t.Fatal(err) + } + // Build on top of the re-inserted block and accept + if err := blockchain.InsertBlock(chain[2]); err != nil { + t.Fatal(err) + } + if err := blockchain.Accept(chain[2]); err != nil { + t.Fatal(err) + } + + // Nothing to assert about the state + checkState := func(sdb *state.StateDB) error { + nonce1 := sdb.GetNonce(addr1) + if nonce1 != 3 { + return fmt.Errorf("expected addr1 nonce: 3, found nonce: %d", nonce1) + } + balance1 := sdb.GetBalance(addr1) + transferredFunds := big.NewInt(30000) + expectedBalance := new(big.Int).Sub(genesisBalance, transferredFunds) + if balance1.Cmp(expectedBalance) != 0 { + return fmt.Errorf("expected balance1: %d, found balance: %d", expectedBalance, balance1) + } + nonce2 := sdb.GetNonce(addr2) + if nonce2 != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce %d", nonce2) + } + balance2 := sdb.GetBalance(addr2) + if balance2.Cmp(transferredFunds) != 0 { + return fmt.Errorf("expected balance2: %d, found %d", transferredFunds, balance2) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +// Insert two different chains that result in the identical state root. +// Once we accept one of the chains, we insert and accept A3 on top of the shared +// state root +// G (genesis) +// / \ +// A1 B1 +// | | +// A2 B2 (A2 and B2 represent two different paths to the identical state trie) +// | +// A3 +func TestAcceptBlockIdenticalStateRoot(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + signer := types.HomesteadSigner{} + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain1, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 3, 10, func(i int, gen *BlockGen) { + if i < 2 { + // Send half the funds from addr1 to addr2 in one transaction per each of the two blocks in [chain1] + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(500000000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + } + // Allow the third block to be empty. + }) + if err != nil { + t.Fatal(err) + } + chain2, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 2, 10, func(i int, gen *BlockGen) { + // Send 1/4 of the funds from addr1 to addr2 in tx1 and 3/4 of the funds in tx2. This will produce the identical state + // root in the second block of [chain2] as is present in the second block of [chain1]. + if i == 0 { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(250000000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + } else { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(750000000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + } + }) + if err != nil { + t.Fatal(err) + } + + // Assert that the block root of the second block in both chains is identical + if chain1[1].Root() != chain2[1].Root() { + t.Fatalf("Expected the latter block in both chain1 and chain2 to have identical state root, but found %s and %s", chain1[1].Root(), chain2[1].Root()) + } + + // Insert first two blocks of [chain1] and both blocks in [chain2] + // This leaves us one additional block to insert on top of [chain1] + // after testing that the state roots are handled correctly. + if _, err := blockchain.InsertChain(chain1[:2]); err != nil { + t.Fatal(err) + } + if _, err := blockchain.InsertChain(chain2); err != nil { + t.Fatal(err) + } + + currentBlock := blockchain.CurrentBlock() + expectedCurrentBlock := chain1[1] + if currentBlock.Hash() != expectedCurrentBlock.Hash() { + t.Fatalf("Expected current block to be %s:%d, but found %s%d", expectedCurrentBlock.Hash().Hex(), expectedCurrentBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + + // Accept the first block in [chain1] and reject all of [chain2] + if err := blockchain.Accept(chain1[0]); err != nil { + t.Fatal(err) + } + for _, block := range chain2 { + if err := blockchain.Reject(block); err != nil { + t.Fatal(err) + } + } + + // Accept the last two blocks in [chain1]. This is a regression test to ensure + // that we do not discard a snapshot difflayer that is still in use by a + // processing block, when a different block with the same root is rejected. + if err := blockchain.Accept(chain1[1]); err != nil { + t.Fatal(err) + } + + lastAcceptedBlock := blockchain.LastAcceptedBlock() + expectedLastAcceptedBlock := chain1[1] + if lastAcceptedBlock.Hash() != expectedLastAcceptedBlock.Hash() { + t.Fatalf("Expected last accepted block to be %s:%d, but found %s%d", expectedLastAcceptedBlock.Hash().Hex(), expectedLastAcceptedBlock.NumberU64(), lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64()) + } + + if err := blockchain.InsertBlock(chain1[2]); err != nil { + t.Fatal(err) + } + if err := blockchain.Accept(chain1[2]); err != nil { + t.Fatal(err) + } + + // check the state of the last accepted block + checkState := func(sdb *state.StateDB) error { + nonce1 := sdb.GetNonce(addr1) + if nonce1 != 2 { + return fmt.Errorf("expected addr1 nonce: 2, found nonce: %d", nonce1) + } + balance1 := sdb.GetBalance(addr1) + expectedBalance := common.Big0 + if balance1.Cmp(expectedBalance) != 0 { + return fmt.Errorf("expected balance1: %d, found balance: %d", expectedBalance, balance1) + } + nonce2 := sdb.GetNonce(addr2) + if nonce2 != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce %d", nonce2) + } + balance2 := sdb.GetBalance(addr2) + if balance2.Cmp(genesisBalance) != 0 { + return fmt.Errorf("expected balance2: %d, found %d", genesisBalance, balance2) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +// Insert two different chains that result in the identical state root. +// Once we insert both of the chains, we restart, insert both the chains again, +// and then we accept one of the chains and accept A3 on top of the shared state +// root +// G (genesis) +// / \ +// A1 B1 +// | | +// A2 B2 (A2 and B2 represent two different paths to the identical state trie) +// | +// A3 +func TestReprocessAcceptBlockIdenticalStateRoot(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := big.NewInt(1000000000) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + + signer := types.HomesteadSigner{} + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain1, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 3, 10, func(i int, gen *BlockGen) { + if i < 2 { + // Send half the funds from addr1 to addr2 in one transaction per each of the two blocks in [chain1] + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(500000000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + } + // Allow the third block to be empty. + }) + if err != nil { + t.Fatal(err) + } + chain2, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 2, 10, func(i int, gen *BlockGen) { + // Send 1/4 of the funds from addr1 to addr2 in tx1 and 3/4 of the funds in tx2. This will produce the identical state + // root in the second block of [chain2] as is present in the second block of [chain1]. + if i == 0 { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(250000000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + } else { + tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(750000000), params.TxGas, nil, nil), signer, key1) + gen.AddTx(tx) + } + }) + if err != nil { + t.Fatal(err) + } + + // Assert that the block root of the second block in both chains is identical + if chain1[1].Root() != chain2[1].Root() { + t.Fatalf("Expected the latter block in both chain1 and chain2 to have identical state root, but found %s and %s", chain1[1].Root(), chain2[1].Root()) + } + + // Insert first two blocks of [chain1] and both blocks in [chain2] + // This leaves us one additional block to insert on top of [chain1] + // after testing that the state roots are handled correctly. + if _, err := blockchain.InsertChain(chain1[:2]); err != nil { + t.Fatal(err) + } + if _, err := blockchain.InsertChain(chain2); err != nil { + t.Fatal(err) + } + + currentBlock := blockchain.CurrentBlock() + expectedCurrentBlock := chain1[1] + if currentBlock.Hash() != expectedCurrentBlock.Hash() { + t.Fatalf("Expected current block to be %s:%d, but found %s%d", expectedCurrentBlock.Hash().Hex(), expectedCurrentBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + + blockchain.Stop() + + blockchain, err = create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + // Insert first two blocks of [chain1] and both blocks in [chain2] + // This leaves us one additional block to insert on top of [chain1] + // after testing that the state roots are handled correctly. + if _, err := blockchain.InsertChain(chain1[:2]); err != nil { + t.Fatal(err) + } + if _, err := blockchain.InsertChain(chain2); err != nil { + t.Fatal(err) + } + + currentBlock = blockchain.CurrentBlock() + expectedCurrentBlock = chain1[1] + if currentBlock.Hash() != expectedCurrentBlock.Hash() { + t.Fatalf("Expected current block to be %s:%d, but found %s%d", expectedCurrentBlock.Hash().Hex(), expectedCurrentBlock.NumberU64(), currentBlock.Hash().Hex(), currentBlock.NumberU64()) + } + + // Accept the first block in [chain1] and reject all of [chain2] + if err := blockchain.Accept(chain1[0]); err != nil { + t.Fatal(err) + } + for _, block := range chain2 { + if err := blockchain.Reject(block); err != nil { + t.Fatal(err) + } + } + + // Accept the last two blocks in [chain1]. This is a regression test to ensure + // that we do not discard a snapshot difflayer that is still in use by a + // processing block, when a different block with the same root is rejected. + if err := blockchain.Accept(chain1[1]); err != nil { + t.Fatal(err) + } + + lastAcceptedBlock := blockchain.LastAcceptedBlock() + expectedLastAcceptedBlock := chain1[1] + if lastAcceptedBlock.Hash() != expectedLastAcceptedBlock.Hash() { + t.Fatalf("Expected last accepted block to be %s:%d, but found %s%d", expectedLastAcceptedBlock.Hash().Hex(), expectedLastAcceptedBlock.NumberU64(), lastAcceptedBlock.Hash().Hex(), lastAcceptedBlock.NumberU64()) + } + + if err := blockchain.InsertBlock(chain1[2]); err != nil { + t.Fatal(err) + } + if err := blockchain.Accept(chain1[2]); err != nil { + t.Fatal(err) + } + + // check the state of the last accepted block + checkState := func(sdb *state.StateDB) error { + nonce1 := sdb.GetNonce(addr1) + if nonce1 != 2 { + return fmt.Errorf("expected addr1 nonce: 2, found nonce: %d", nonce1) + } + balance1 := sdb.GetBalance(addr1) + expectedBalance := common.Big0 + if balance1.Cmp(expectedBalance) != 0 { + return fmt.Errorf("expected balance1: %d, found balance: %d", expectedBalance, balance1) + } + nonce2 := sdb.GetNonce(addr2) + if nonce2 != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce %d", nonce2) + } + balance2 := sdb.GetBalance(addr2) + if balance2.Cmp(genesisBalance) != 0 { + return fmt.Errorf("expected balance2: %d, found %d", genesisBalance, balance2) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} + +func TestGenerateChainInvalidBlockFee(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := new(big.Int).Mul(big.NewInt(1000000), big.NewInt(params.Ether)) + gspec := &Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + // This call generates a chain of 3 blocks. + signer := types.LatestSigner(params.TestChainConfig) + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + _, _, err = GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 3, 0, func(i int, gen *BlockGen) { + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: gen.TxNonce(addr1), + To: &addr2, + Gas: params.TxGas, + GasFeeCap: gen.BaseFee(), + GasTipCap: big.NewInt(0), + Data: []byte{}, + }) + + signedTx, err := types.SignTx(tx, signer, key1) + if err != nil { + t.Fatal(err) + } + gen.AddTx(signedTx) + }) + if err == nil { + t.Fatal("should not have been able to build a block because of insufficient block fee") + } + if !strings.Contains(err.Error(), "insufficient gas (0) to cover the block cost (400000)") { + t.Fatalf("should have gotten insufficient block fee error but got %v instead", err) + } +} + +func TestInsertChainInvalidBlockFee(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := new(big.Int).Mul(big.NewInt(1000000), big.NewInt(params.Ether)) + gspec := &Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + // This call generates a chain of 3 blocks. + signer := types.LatestSigner(params.TestChainConfig) + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + chain, _, err := GenerateChain(params.TestChainConfig, genesis, dummy.NewETHFaker(), genDB, 3, 0, func(i int, gen *BlockGen) { + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: gen.TxNonce(addr1), + To: &addr2, + Gas: params.TxGas, + GasFeeCap: gen.BaseFee(), + GasTipCap: big.NewInt(0), + Data: []byte{}, + }) + + signedTx, err := types.SignTx(tx, signer, key1) + if err != nil { + t.Fatal(err) + } + gen.AddTx(signedTx) + }) + if err != nil { + t.Fatal(err) + } + _, err = blockchain.InsertChain(chain) + if err == nil { + t.Fatal("should not have been able to build a block because of insufficient block fee") + } + if !strings.Contains(err.Error(), "insufficient gas (0) to cover the block cost (400000)") { + t.Fatalf("should have gotten insufficient block fee error but got %v instead", err) + } +} + +func TestInsertChainValidBlockFee(t *testing.T, create func(db ethdb.Database, chainConfig *params.ChainConfig, lastAcceptedHash common.Hash) (*BlockChain, error)) { + var ( + key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + addr1 = crypto.PubkeyToAddress(key1.PublicKey) + addr2 = crypto.PubkeyToAddress(key2.PublicKey) + // We use two separate databases since GenerateChain commits the state roots to its underlying + // database. + genDB = rawdb.NewMemoryDatabase() + chainDB = rawdb.NewMemoryDatabase() + ) + + // Ensure that key1 has some funds in the genesis block. + genesisBalance := new(big.Int).Mul(big.NewInt(1000000), big.NewInt(params.Ether)) + gspec := &Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{addr1: {Balance: genesisBalance}}, + } + genesis := gspec.MustCommit(genDB) + _ = gspec.MustCommit(chainDB) + + blockchain, err := create(chainDB, gspec.Config, common.Hash{}) + if err != nil { + t.Fatal(err) + } + defer blockchain.Stop() + + // This call generates a chain of 3 blocks. + signer := types.LatestSigner(params.TestChainConfig) + // Generate chain of blocks using [genDB] instead of [chainDB] to avoid writing + // to the BlockChain's database while generating blocks. + tip := big.NewInt(50000 * params.GWei) + transfer := big.NewInt(10000) + chain, _, err := GenerateChain(gspec.Config, genesis, blockchain.engine, genDB, 3, 0, func(i int, gen *BlockGen) { + feeCap := new(big.Int).Add(gen.BaseFee(), tip) + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: gen.TxNonce(addr1), + To: &addr2, + Gas: params.TxGas, + Value: transfer, + GasFeeCap: feeCap, + GasTipCap: tip, + Data: []byte{}, + }) + + signedTx, err := types.SignTx(tx, signer, key1) + if err != nil { + t.Fatal(err) + } + gen.AddTx(signedTx) + }) + if err != nil { + t.Fatal(err) + } + + // Insert three blocks into the chain and accept only the first block. + if _, err := blockchain.InsertChain(chain); err != nil { + t.Fatal(err) + } + if err := blockchain.Accept(chain[0]); err != nil { + t.Fatal(err) + } + + // check the state of the last accepted block + checkState := func(sdb *state.StateDB) error { + nonce := sdb.GetNonce(addr1) + if nonce != 1 { + return fmt.Errorf("expected nonce addr1: 1, found nonce: %d", nonce) + } + balance1 := sdb.GetBalance(addr1) + expectedBalance1 := new(big.Int).Sub(genesisBalance, transfer) + baseFee := params.DefaultFeeConfig.MinBaseFee + feeSpend := new(big.Int).Mul(new(big.Int).Add(baseFee, tip), new(big.Int).SetUint64(params.TxGas)) + expectedBalance1.Sub(expectedBalance1, feeSpend) + if balance1.Cmp(expectedBalance1) != 0 { + return fmt.Errorf("expected addr1 balance: %d, found balance: %d", expectedBalance1, balance1) + } + + balance2 := sdb.GetBalance(addr2) + expectedBalance2 := transfer + if balance2.Cmp(expectedBalance2) != 0 { + return fmt.Errorf("expected addr2 balance: %d, found balance: %d", expectedBalance2, balance2) + } + + nonce = sdb.GetNonce(addr2) + if nonce != 0 { + return fmt.Errorf("expected addr2 nonce: 0, found nonce: %d", nonce) + } + return nil + } + + checkBlockChainState(t, blockchain, gspec, chainDB, create, checkState) +} diff --git a/core/tx_cacher.go b/core/tx_cacher.go new file mode 100644 index 0000000000..5e92fb5877 --- /dev/null +++ b/core/tx_cacher.go @@ -0,0 +1,110 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "github.com/ava-labs/subnet-evm/core/types" +) + +// txSenderCacherRequest is a request for recovering transaction senders with a +// specific signature scheme and caching it into the transactions themselves. +// +// The inc field defines the number of transactions to skip after each recovery, +// which is used to feed the same underlying input array to different threads but +// ensure they process the early transactions fast. +type txSenderCacherRequest struct { + signer types.Signer + txs []*types.Transaction + inc int +} + +// TxSenderCacher is a helper structure to concurrently ecrecover transaction +// senders from digital signatures on background threads. +type TxSenderCacher struct { + threads int + tasks chan *txSenderCacherRequest +} + +// newTxSenderCacher creates a new transaction sender background cacher and starts +// as many processing goroutines as allowed by the GOMAXPROCS on construction. +func newTxSenderCacher(threads int) *TxSenderCacher { + cacher := &TxSenderCacher{ + tasks: make(chan *txSenderCacherRequest, threads), + threads: threads, + } + for i := 0; i < threads; i++ { + go cacher.cache() + } + return cacher +} + +// cache is an infinite loop, caching transaction senders from various forms of +// data structures. +func (cacher *TxSenderCacher) cache() { + for task := range cacher.tasks { + for i := 0; i < len(task.txs); i += task.inc { + types.Sender(task.signer, task.txs[i]) + } + } +} + +// recover recovers the senders from a batch of transactions and caches them +// back into the same data structures. There is no validation being done, nor +// any reaction to invalid signatures. That is up to calling code later. +func (cacher *TxSenderCacher) Recover(signer types.Signer, txs []*types.Transaction) { + // If there's nothing to recover, abort + if len(txs) == 0 { + return + } + // Ensure we have meaningful task sizes and schedule the recoveries + tasks := cacher.threads + if len(txs) < tasks*4 { + tasks = (len(txs) + 3) / 4 + } + for i := 0; i < tasks; i++ { + cacher.tasks <- &txSenderCacherRequest{ + signer: signer, + txs: txs[i:], + inc: tasks, + } + } +} + +// recoverFromBlocks recovers the senders from a batch of blocks and caches them +// back into the same data structures. There is no validation being done, nor +// any reaction to invalid signatures. That is up to calling code later. +func (cacher *TxSenderCacher) recoverFromBlocks(signer types.Signer, blocks []*types.Block) { + count := 0 + for _, block := range blocks { + count += len(block.Transactions()) + } + txs := make([]*types.Transaction, 0, count) + for _, block := range blocks { + txs = append(txs, block.Transactions()...) + } + cacher.Recover(signer, txs) +} diff --git a/core/tx_journal.go b/core/tx_journal.go new file mode 100644 index 0000000000..ae98806385 --- /dev/null +++ b/core/tx_journal.go @@ -0,0 +1,190 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "errors" + "io" + "os" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// errNoActiveJournal is returned if a transaction is attempted to be inserted +// into the journal, but no such file is currently open. +var errNoActiveJournal = errors.New("no active journal") + +// devNull is a WriteCloser that just discards anything written into it. Its +// goal is to allow the transaction journal to write into a fake journal when +// loading transactions on startup without printing warnings due to no file +// being read for write. +type devNull struct{} + +func (*devNull) Write(p []byte) (n int, err error) { return len(p), nil } +func (*devNull) Close() error { return nil } + +// txJournal is a rotating log of transactions with the aim of storing locally +// created transactions to allow non-executed ones to survive node restarts. +type txJournal struct { + path string // Filesystem path to store the transactions at + writer io.WriteCloser // Output stream to write new transactions into +} + +// newTxJournal creates a new transaction journal to +func newTxJournal(path string) *txJournal { + return &txJournal{ + path: path, + } +} + +// load parses a transaction journal dump from disk, loading its contents into +// the specified pool. +func (journal *txJournal) load(add func([]*types.Transaction) []error) error { + // Skip the parsing if the journal file doesn't exist at all + if _, err := os.Stat(journal.path); os.IsNotExist(err) { + return nil + } + // Open the journal for loading any past transactions + input, err := os.Open(journal.path) + if err != nil { + return err + } + defer input.Close() + + // Temporarily discard any journal additions (don't double add on load) + journal.writer = new(devNull) + defer func() { journal.writer = nil }() + + // Inject all transactions from the journal into the pool + stream := rlp.NewStream(input, 0) + total, dropped := 0, 0 + + // Create a method to load a limited batch of transactions and bump the + // appropriate progress counters. Then use this method to load all the + // journaled transactions in small-ish batches. + loadBatch := func(txs types.Transactions) { + for _, err := range add(txs) { + if err != nil { + log.Debug("Failed to add journaled transaction", "err", err) + dropped++ + } + } + } + var ( + failure error + batch types.Transactions + ) + for { + // Parse the next transaction and terminate on error + tx := new(types.Transaction) + if err = stream.Decode(tx); err != nil { + if err != io.EOF { + failure = err + } + if batch.Len() > 0 { + loadBatch(batch) + } + break + } + // New transaction parsed, queue up for later, import if threshold is reached + total++ + + if batch = append(batch, tx); batch.Len() > 1024 { + loadBatch(batch) + batch = batch[:0] + } + } + log.Info("Loaded local transaction journal", "transactions", total, "dropped", dropped) + + return failure +} + +// insert adds the specified transaction to the local disk journal. +func (journal *txJournal) insert(tx *types.Transaction) error { + if journal.writer == nil { + return errNoActiveJournal + } + if err := rlp.Encode(journal.writer, tx); err != nil { + return err + } + return nil +} + +// rotate regenerates the transaction journal based on the current contents of +// the transaction pool. +func (journal *txJournal) rotate(all map[common.Address]types.Transactions) error { + // Close the current journal (if any is open) + if journal.writer != nil { + if err := journal.writer.Close(); err != nil { + return err + } + journal.writer = nil + } + // Generate a new journal with the contents of the current pool + replacement, err := os.OpenFile(journal.path+".new", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644) + if err != nil { + return err + } + journaled := 0 + for _, txs := range all { + for _, tx := range txs { + if err = rlp.Encode(replacement, tx); err != nil { + replacement.Close() + return err + } + } + journaled += len(txs) + } + replacement.Close() + + // Replace the live journal with the newly generated one + if err = os.Rename(journal.path+".new", journal.path); err != nil { + return err + } + sink, err := os.OpenFile(journal.path, os.O_WRONLY|os.O_APPEND, 0644) + if err != nil { + return err + } + journal.writer = sink + log.Info("Regenerated local transaction journal", "transactions", journaled, "accounts", len(all)) + + return nil +} + +// close flushes the transaction journal contents to disk and closes the file. +func (journal *txJournal) close() error { + var err error + + if journal.writer != nil { + err = journal.writer.Close() + journal.writer = nil + } + return err +} diff --git a/core/tx_list.go b/core/tx_list.go new file mode 100644 index 0000000000..3844a7a36c --- /dev/null +++ b/core/tx_list.go @@ -0,0 +1,645 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "container/heap" + "math" + "math/big" + "sort" + "sync" + "sync/atomic" + "time" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// nonceHeap is a heap.Interface implementation over 64bit unsigned integers for +// retrieving sorted transactions from the possibly gapped future queue. +type nonceHeap []uint64 + +func (h nonceHeap) Len() int { return len(h) } +func (h nonceHeap) Less(i, j int) bool { return h[i] < h[j] } +func (h nonceHeap) Swap(i, j int) { h[i], h[j] = h[j], h[i] } + +func (h *nonceHeap) Push(x interface{}) { + *h = append(*h, x.(uint64)) +} + +func (h *nonceHeap) Pop() interface{} { + old := *h + n := len(old) + x := old[n-1] + *h = old[0 : n-1] + return x +} + +// txSortedMap is a nonce->transaction hash map with a heap based index to allow +// iterating over the contents in a nonce-incrementing way. +type txSortedMap struct { + items map[uint64]*types.Transaction // Hash map storing the transaction data + index *nonceHeap // Heap of nonces of all the stored transactions (non-strict mode) + cache types.Transactions // Cache of the transactions already sorted +} + +// newTxSortedMap creates a new nonce-sorted transaction map. +func newTxSortedMap() *txSortedMap { + return &txSortedMap{ + items: make(map[uint64]*types.Transaction), + index: new(nonceHeap), + } +} + +// Get retrieves the current transactions associated with the given nonce. +func (m *txSortedMap) Get(nonce uint64) *types.Transaction { + return m.items[nonce] +} + +// Put inserts a new transaction into the map, also updating the map's nonce +// index. If a transaction already exists with the same nonce, it's overwritten. +func (m *txSortedMap) Put(tx *types.Transaction) { + nonce := tx.Nonce() + if m.items[nonce] == nil { + heap.Push(m.index, nonce) + } + m.items[nonce], m.cache = tx, nil +} + +// Forward removes all transactions from the map with a nonce lower than the +// provided threshold. Every removed transaction is returned for any post-removal +// maintenance. +func (m *txSortedMap) Forward(threshold uint64) types.Transactions { + var removed types.Transactions + + // Pop off heap items until the threshold is reached + for m.index.Len() > 0 && (*m.index)[0] < threshold { + nonce := heap.Pop(m.index).(uint64) + removed = append(removed, m.items[nonce]) + delete(m.items, nonce) + } + // If we had a cached order, shift the front + if m.cache != nil { + m.cache = m.cache[len(removed):] + } + return removed +} + +// Filter iterates over the list of transactions and removes all of them for which +// the specified function evaluates to true. +// Filter, as opposed to 'filter', re-initialises the heap after the operation is done. +// If you want to do several consecutive filterings, it's therefore better to first +// do a .filter(func1) followed by .Filter(func2) or reheap() +func (m *txSortedMap) Filter(filter func(*types.Transaction) bool) types.Transactions { + removed := m.filter(filter) + // If transactions were removed, the heap and cache are ruined + if len(removed) > 0 { + m.reheap() + } + return removed +} + +func (m *txSortedMap) reheap() { + *m.index = make([]uint64, 0, len(m.items)) + for nonce := range m.items { + *m.index = append(*m.index, nonce) + } + heap.Init(m.index) + m.cache = nil +} + +// filter is identical to Filter, but **does not** regenerate the heap. This method +// should only be used if followed immediately by a call to Filter or reheap() +func (m *txSortedMap) filter(filter func(*types.Transaction) bool) types.Transactions { + var removed types.Transactions + + // Collect all the transactions to filter out + for nonce, tx := range m.items { + if filter(tx) { + removed = append(removed, tx) + delete(m.items, nonce) + } + } + if len(removed) > 0 { + m.cache = nil + } + return removed +} + +// Cap places a hard limit on the number of items, returning all transactions +// exceeding that limit. +func (m *txSortedMap) Cap(threshold int) types.Transactions { + // Short circuit if the number of items is under the limit + if len(m.items) <= threshold { + return nil + } + // Otherwise gather and drop the highest nonce'd transactions + var drops types.Transactions + + sort.Sort(*m.index) + for size := len(m.items); size > threshold; size-- { + drops = append(drops, m.items[(*m.index)[size-1]]) + delete(m.items, (*m.index)[size-1]) + } + *m.index = (*m.index)[:threshold] + heap.Init(m.index) + + // If we had a cache, shift the back + if m.cache != nil { + m.cache = m.cache[:len(m.cache)-len(drops)] + } + return drops +} + +// Remove deletes a transaction from the maintained map, returning whether the +// transaction was found. +func (m *txSortedMap) Remove(nonce uint64) bool { + // Short circuit if no transaction is present + _, ok := m.items[nonce] + if !ok { + return false + } + // Otherwise delete the transaction and fix the heap index + for i := 0; i < m.index.Len(); i++ { + if (*m.index)[i] == nonce { + heap.Remove(m.index, i) + break + } + } + delete(m.items, nonce) + m.cache = nil + + return true +} + +// Ready retrieves a sequentially increasing list of transactions starting at the +// provided nonce that is ready for processing. The returned transactions will be +// removed from the list. +// +// Note, all transactions with nonces lower than start will also be returned to +// prevent getting into and invalid state. This is not something that should ever +// happen but better to be self correcting than failing! +func (m *txSortedMap) Ready(start uint64) types.Transactions { + // Short circuit if no transactions are available + if m.index.Len() == 0 || (*m.index)[0] > start { + return nil + } + // Otherwise start accumulating incremental transactions + var ready types.Transactions + for next := (*m.index)[0]; m.index.Len() > 0 && (*m.index)[0] == next; next++ { + ready = append(ready, m.items[next]) + delete(m.items, next) + heap.Pop(m.index) + } + m.cache = nil + + return ready +} + +// Len returns the length of the transaction map. +func (m *txSortedMap) Len() int { + return len(m.items) +} + +func (m *txSortedMap) flatten() types.Transactions { + // If the sorting was not cached yet, create and cache it + if m.cache == nil { + m.cache = make(types.Transactions, 0, len(m.items)) + for _, tx := range m.items { + m.cache = append(m.cache, tx) + } + sort.Sort(types.TxByNonce(m.cache)) + } + return m.cache +} + +// Flatten creates a nonce-sorted slice of transactions based on the loosely +// sorted internal representation. The result of the sorting is cached in case +// it's requested again before any modifications are made to the contents. +func (m *txSortedMap) Flatten() types.Transactions { + // Copy the cache to prevent accidental modifications + cache := m.flatten() + txs := make(types.Transactions, len(cache)) + copy(txs, cache) + return txs +} + +// LastElement returns the last element of a flattened list, thus, the +// transaction with the highest nonce +func (m *txSortedMap) LastElement() *types.Transaction { + cache := m.flatten() + return cache[len(cache)-1] +} + +// txList is a "list" of transactions belonging to an account, sorted by account +// nonce. The same type can be used both for storing contiguous transactions for +// the executable/pending queue; and for storing gapped transactions for the non- +// executable/future queue, with minor behavioral changes. +type txList struct { + strict bool // Whether nonces are strictly continuous or not + txs *txSortedMap // Heap indexed sorted hash map of the transactions + + costcap *big.Int // Price of the highest costing transaction (reset only if exceeds balance) + gascap uint64 // Gas limit of the highest spending transaction (reset only if exceeds block limit) +} + +// newTxList create a new transaction list for maintaining nonce-indexable fast, +// gapped, sortable transaction lists. +func newTxList(strict bool) *txList { + return &txList{ + strict: strict, + txs: newTxSortedMap(), + costcap: new(big.Int), + } +} + +// Overlaps returns whether the transaction specified has the same nonce as one +// already contained within the list. +func (l *txList) Overlaps(tx *types.Transaction) bool { + return l.txs.Get(tx.Nonce()) != nil +} + +// Add tries to insert a new transaction into the list, returning whether the +// transaction was accepted, and if yes, any previous transaction it replaced. +// +// If the new transaction is accepted into the list, the lists' cost and gas +// thresholds are also potentially updated. +func (l *txList) Add(tx *types.Transaction, priceBump uint64) (bool, *types.Transaction) { + // If there's an older better transaction, abort + old := l.txs.Get(tx.Nonce()) + if old != nil { + if old.GasFeeCapCmp(tx) >= 0 || old.GasTipCapCmp(tx) >= 0 { + return false, nil + } + // thresholdFeeCap = oldFC * (100 + priceBump) / 100 + a := big.NewInt(100 + int64(priceBump)) + aFeeCap := new(big.Int).Mul(a, old.GasFeeCap()) + aTip := a.Mul(a, old.GasTipCap()) + + // thresholdTip = oldTip * (100 + priceBump) / 100 + b := big.NewInt(100) + thresholdFeeCap := aFeeCap.Div(aFeeCap, b) + thresholdTip := aTip.Div(aTip, b) + + // We have to ensure that both the new fee cap and tip are higher than the + // old ones as well as checking the percentage threshold to ensure that + // this is accurate for low (Wei-level) gas price replacements. + if tx.GasFeeCapIntCmp(thresholdFeeCap) < 0 || tx.GasTipCapIntCmp(thresholdTip) < 0 { + return false, nil + } + } + // Otherwise overwrite the old transaction with the current one + l.txs.Put(tx) + if cost := tx.Cost(); l.costcap.Cmp(cost) < 0 { + l.costcap = cost + } + if gas := tx.Gas(); l.gascap < gas { + l.gascap = gas + } + return true, old +} + +// Forward removes all transactions from the list with a nonce lower than the +// provided threshold. Every removed transaction is returned for any post-removal +// maintenance. +func (l *txList) Forward(threshold uint64) types.Transactions { + return l.txs.Forward(threshold) +} + +// Filter removes all transactions from the list with a cost or gas limit higher +// than the provided thresholds. Every removed transaction is returned for any +// post-removal maintenance. Strict-mode invalidated transactions are also +// returned. +// +// This method uses the cached costcap and gascap to quickly decide if there's even +// a point in calculating all the costs or if the balance covers all. If the threshold +// is lower than the costgas cap, the caps will be reset to a new high after removing +// the newly invalidated transactions. +func (l *txList) Filter(costLimit *big.Int, gasLimit uint64) (types.Transactions, types.Transactions) { + // If all transactions are below the threshold, short circuit + if l.costcap.Cmp(costLimit) <= 0 && l.gascap <= gasLimit { + return nil, nil + } + l.costcap = new(big.Int).Set(costLimit) // Lower the caps to the thresholds + l.gascap = gasLimit + + // Filter out all the transactions above the account's funds + removed := l.txs.Filter(func(tx *types.Transaction) bool { + return tx.Gas() > gasLimit || tx.Cost().Cmp(costLimit) > 0 + }) + + if len(removed) == 0 { + return nil, nil + } + var invalids types.Transactions + // If the list was strict, filter anything above the lowest nonce + if l.strict { + lowest := uint64(math.MaxUint64) + for _, tx := range removed { + if nonce := tx.Nonce(); lowest > nonce { + lowest = nonce + } + } + invalids = l.txs.filter(func(tx *types.Transaction) bool { return tx.Nonce() > lowest }) + } + l.txs.reheap() + return removed, invalids +} + +// Cap places a hard limit on the number of items, returning all transactions +// exceeding that limit. +func (l *txList) Cap(threshold int) types.Transactions { + return l.txs.Cap(threshold) +} + +// Remove deletes a transaction from the maintained list, returning whether the +// transaction was found, and also returning any transaction invalidated due to +// the deletion (strict mode only). +func (l *txList) Remove(tx *types.Transaction) (bool, types.Transactions) { + // Remove the transaction from the set + nonce := tx.Nonce() + if removed := l.txs.Remove(nonce); !removed { + return false, nil + } + // In strict mode, filter out non-executable transactions + if l.strict { + return true, l.txs.Filter(func(tx *types.Transaction) bool { return tx.Nonce() > nonce }) + } + return true, nil +} + +// Ready retrieves a sequentially increasing list of transactions starting at the +// provided nonce that is ready for processing. The returned transactions will be +// removed from the list. +// +// Note, all transactions with nonces lower than start will also be returned to +// prevent getting into and invalid state. This is not something that should ever +// happen but better to be self correcting than failing! +func (l *txList) Ready(start uint64) types.Transactions { + return l.txs.Ready(start) +} + +// Len returns the length of the transaction list. +func (l *txList) Len() int { + return l.txs.Len() +} + +// Empty returns whether the list of transactions is empty or not. +func (l *txList) Empty() bool { + return l.Len() == 0 +} + +// Flatten creates a nonce-sorted slice of transactions based on the loosely +// sorted internal representation. The result of the sorting is cached in case +// it's requested again before any modifications are made to the contents. +func (l *txList) Flatten() types.Transactions { + return l.txs.Flatten() +} + +// LastElement returns the last element of a flattened list, thus, the +// transaction with the highest nonce +func (l *txList) LastElement() *types.Transaction { + return l.txs.LastElement() +} + +// priceHeap is a heap.Interface implementation over transactions for retrieving +// price-sorted transactions to discard when the pool fills up. If baseFee is set +// then the heap is sorted based on the effective tip based on the given base fee. +// If baseFee is nil then the sorting is based on gasFeeCap. +type priceHeap struct { + baseFee *big.Int // heap should always be re-sorted after baseFee is changed + list []*types.Transaction +} + +func (h *priceHeap) Len() int { return len(h.list) } +func (h *priceHeap) Swap(i, j int) { h.list[i], h.list[j] = h.list[j], h.list[i] } + +func (h *priceHeap) Less(i, j int) bool { + switch h.cmp(h.list[i], h.list[j]) { + case -1: + return true + case 1: + return false + default: + return h.list[i].Nonce() > h.list[j].Nonce() + } +} + +func (h *priceHeap) cmp(a, b *types.Transaction) int { + if h.baseFee != nil { + // Compare effective tips if baseFee is specified + if c := a.EffectiveGasTipCmp(b, h.baseFee); c != 0 { + return c + } + } + // Compare fee caps if baseFee is not specified or effective tips are equal + if c := a.GasFeeCapCmp(b); c != 0 { + return c + } + // Compare tips if effective tips and fee caps are equal + return a.GasTipCapCmp(b) +} + +func (h *priceHeap) Push(x interface{}) { + tx := x.(*types.Transaction) + h.list = append(h.list, tx) +} + +func (h *priceHeap) Pop() interface{} { + old := h.list + n := len(old) + x := old[n-1] + old[n-1] = nil + h.list = old[0 : n-1] + return x +} + +// txPricedList is a price-sorted heap to allow operating on transactions pool +// contents in a price-incrementing way. It's built opon the all transactions +// in txpool but only interested in the remote part. It means only remote transactions +// will be considered for tracking, sorting, eviction, etc. +// +// Two heaps are used for sorting: the urgent heap (based on effective tip in the next +// block) and the floating heap (based on gasFeeCap). Always the bigger heap is chosen for +// eviction. Transactions evicted from the urgent heap are first demoted into the floating heap. +// In some cases (during a congestion, when blocks are full) the urgent heap can provide +// better candidates for inclusion while in other cases (at the top of the baseFee peak) +// the floating heap is better. When baseFee is decreasing they behave similarly. +type txPricedList struct { + // Number of stale price points to (re-heap trigger). + // This field is accessed atomically, and must be the first field + // to ensure it has correct alignment for atomic.AddInt64. + // See https://golang.org/pkg/sync/atomic/#pkg-note-BUG. + stales int64 + + all *txLookup // Pointer to the map of all transactions + urgent, floating priceHeap // Heaps of prices of all the stored **remote** transactions + reheapMu sync.Mutex // Mutex asserts that only one routine is reheaping the list +} + +const ( + // urgentRatio : floatingRatio is the capacity ratio of the two queues + urgentRatio = 4 + floatingRatio = 1 +) + +// newTxPricedList creates a new price-sorted transaction heap. +func newTxPricedList(all *txLookup) *txPricedList { + return &txPricedList{ + all: all, + } +} + +// Put inserts a new transaction into the heap. +func (l *txPricedList) Put(tx *types.Transaction, local bool) { + if local { + return + } + // Insert every new transaction to the urgent heap first; Discard will balance the heaps + heap.Push(&l.urgent, tx) +} + +// Removed notifies the prices transaction list that an old transaction dropped +// from the pool. The list will just keep a counter of stale objects and update +// the heap if a large enough ratio of transactions go stale. +func (l *txPricedList) Removed(count int) { + // Bump the stale counter, but exit if still too low (< 25%) + stales := atomic.AddInt64(&l.stales, int64(count)) + if int(stales) <= (len(l.urgent.list)+len(l.floating.list))/4 { + return + } + // Seems we've reached a critical number of stale transactions, reheap + l.Reheap() +} + +// Underpriced checks whether a transaction is cheaper than (or as cheap as) the +// lowest priced (remote) transaction currently being tracked. +func (l *txPricedList) Underpriced(tx *types.Transaction) bool { + // Note: with two queues, being underpriced is defined as being worse than the worst item + // in all non-empty queues if there is any. If both queues are empty then nothing is underpriced. + return (l.underpricedFor(&l.urgent, tx) || len(l.urgent.list) == 0) && + (l.underpricedFor(&l.floating, tx) || len(l.floating.list) == 0) && + (len(l.urgent.list) != 0 || len(l.floating.list) != 0) +} + +// underpricedFor checks whether a transaction is cheaper than (or as cheap as) the +// lowest priced (remote) transaction in the given heap. +func (l *txPricedList) underpricedFor(h *priceHeap, tx *types.Transaction) bool { + // Discard stale price points if found at the heap start + for len(h.list) > 0 { + head := h.list[0] + if l.all.GetRemote(head.Hash()) == nil { // Removed or migrated + atomic.AddInt64(&l.stales, -1) + heap.Pop(h) + continue + } + break + } + // Check if the transaction is underpriced or not + if len(h.list) == 0 { + return false // There is no remote transaction at all. + } + // If the remote transaction is even cheaper than the + // cheapest one tracked locally, reject it. + return h.cmp(h.list[0], tx) >= 0 +} + +// Discard finds a number of most underpriced transactions, removes them from the +// priced list and returns them for further removal from the entire pool. +// +// Note local transaction won't be considered for eviction. +func (l *txPricedList) Discard(slots int, force bool) (types.Transactions, bool) { + drop := make(types.Transactions, 0, slots) // Remote underpriced transactions to drop + for slots > 0 { + if len(l.urgent.list)*floatingRatio > len(l.floating.list)*urgentRatio || floatingRatio == 0 { + // Discard stale transactions if found during cleanup + tx := heap.Pop(&l.urgent).(*types.Transaction) + if l.all.GetRemote(tx.Hash()) == nil { // Removed or migrated + atomic.AddInt64(&l.stales, -1) + continue + } + // Non stale transaction found, move to floating heap + heap.Push(&l.floating, tx) + } else { + if len(l.floating.list) == 0 { + // Stop if both heaps are empty + break + } + // Discard stale transactions if found during cleanup + tx := heap.Pop(&l.floating).(*types.Transaction) + if l.all.GetRemote(tx.Hash()) == nil { // Removed or migrated + atomic.AddInt64(&l.stales, -1) + continue + } + // Non stale transaction found, discard it + drop = append(drop, tx) + slots -= numSlots(tx) + } + } + // If we still can't make enough room for the new transaction + if slots > 0 && !force { + for _, tx := range drop { + heap.Push(&l.urgent, tx) + } + return nil, false + } + return drop, true +} + +// Reheap forcibly rebuilds the heap based on the current remote transaction set. +func (l *txPricedList) Reheap() { + l.reheapMu.Lock() + defer l.reheapMu.Unlock() + start := time.Now() + atomic.StoreInt64(&l.stales, 0) + l.urgent.list = make([]*types.Transaction, 0, l.all.RemoteCount()) + l.all.Range(func(hash common.Hash, tx *types.Transaction, local bool) bool { + l.urgent.list = append(l.urgent.list, tx) + return true + }, false, true) // Only iterate remotes + heap.Init(&l.urgent) + + // balance out the two heaps by moving the worse half of transactions into the + // floating heap + // Note: Discard would also do this before the first eviction but Reheap can do + // is more efficiently. Also, Underpriced would work suboptimally the first time + // if the floating queue was empty. + floatingCount := len(l.urgent.list) * floatingRatio / (urgentRatio + floatingRatio) + l.floating.list = make([]*types.Transaction, floatingCount) + for i := 0; i < floatingCount; i++ { + l.floating.list[i] = heap.Pop(&l.urgent).(*types.Transaction) + } + heap.Init(&l.floating) + reheapTimer.Update(time.Since(start)) +} + +// SetBaseFee updates the base fee and triggers a re-heap. Note that Removed is not +// necessary to call right before SetBaseFee when processing a new block. +func (l *txPricedList) SetBaseFee(baseFee *big.Int) { + l.urgent.baseFee = baseFee + l.Reheap() +} diff --git a/core/tx_list_test.go b/core/tx_list_test.go new file mode 100644 index 0000000000..cfa7c50c23 --- /dev/null +++ b/core/tx_list_test.go @@ -0,0 +1,82 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "math/big" + "math/rand" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/crypto" +) + +// Tests that transactions can be added to strict lists and list contents and +// nonce boundaries are correctly maintained. +func TestStrictTxListAdd(t *testing.T) { + // Generate a list of transactions to insert + key, _ := crypto.GenerateKey() + + txs := make(types.Transactions, 1024) + for i := 0; i < len(txs); i++ { + txs[i] = transaction(uint64(i), 0, key) + } + // Insert the transactions in a random order + list := newTxList(true) + for _, v := range rand.Perm(len(txs)) { + list.Add(txs[v], DefaultTxPoolConfig.PriceBump) + } + // Verify internal state + if len(list.txs.items) != len(txs) { + t.Errorf("transaction count mismatch: have %d, want %d", len(list.txs.items), len(txs)) + } + for i, tx := range txs { + if list.txs.items[tx.Nonce()] != tx { + t.Errorf("item %d: transaction mismatch: have %v, want %v", i, list.txs.items[tx.Nonce()], tx) + } + } +} + +func BenchmarkTxListAdd(b *testing.B) { + // Generate a list of transactions to insert + key, _ := crypto.GenerateKey() + + txs := make(types.Transactions, 100000) + for i := 0; i < len(txs); i++ { + txs[i] = transaction(uint64(i), 0, key) + } + // Insert the transactions in a random order + priceLimit := big.NewInt(int64(DefaultTxPoolConfig.PriceLimit)) + b.ResetTimer() + for i := 0; i < b.N; i++ { + list := newTxList(true) + for _, v := range rand.Perm(len(txs)) { + list.Add(txs[v], DefaultTxPoolConfig.PriceBump) + list.Filter(priceLimit, DefaultTxPoolConfig.PriceBump) + } + } +} diff --git a/core/tx_noncer.go b/core/tx_noncer.go new file mode 100644 index 0000000000..6c40eb2ad6 --- /dev/null +++ b/core/tx_noncer.go @@ -0,0 +1,97 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "sync" + + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ethereum/go-ethereum/common" +) + +// txNoncer is a tiny virtual state database to manage the executable nonces of +// accounts in the pool, falling back to reading from a real state database if +// an account is unknown. +type txNoncer struct { + fallback *state.StateDB + nonces map[common.Address]uint64 + lock sync.Mutex +} + +// newTxNoncer creates a new virtual state database to track the pool nonces. +func newTxNoncer(statedb *state.StateDB) *txNoncer { + return &txNoncer{ + fallback: statedb.Copy(), + nonces: make(map[common.Address]uint64), + } +} + +// get returns the current nonce of an account, falling back to a real state +// database if the account is unknown. +func (txn *txNoncer) get(addr common.Address) uint64 { + // We use mutex for get operation is the underlying + // state will mutate db even for read access. + txn.lock.Lock() + defer txn.lock.Unlock() + + if _, ok := txn.nonces[addr]; !ok { + txn.nonces[addr] = txn.fallback.GetNonce(addr) + } + return txn.nonces[addr] +} + +// set inserts a new virtual nonce into the virtual state database to be returned +// whenever the pool requests it instead of reaching into the real state database. +func (txn *txNoncer) set(addr common.Address, nonce uint64) { + txn.lock.Lock() + defer txn.lock.Unlock() + + txn.nonces[addr] = nonce +} + +// setIfLower updates a new virtual nonce into the virtual state database if the +// the new one is lower. +func (txn *txNoncer) setIfLower(addr common.Address, nonce uint64) { + txn.lock.Lock() + defer txn.lock.Unlock() + + if _, ok := txn.nonces[addr]; !ok { + txn.nonces[addr] = txn.fallback.GetNonce(addr) + } + if txn.nonces[addr] <= nonce { + return + } + txn.nonces[addr] = nonce +} + +// setAll sets the nonces for all accounts to the given map. +func (txn *txNoncer) setAll(all map[common.Address]uint64) { + txn.lock.Lock() + defer txn.lock.Unlock() + + txn.nonces = all +} diff --git a/core/tx_pool.go b/core/tx_pool.go new file mode 100644 index 0000000000..5fef2d71a8 --- /dev/null +++ b/core/tx_pool.go @@ -0,0 +1,1969 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "errors" + "fmt" + "math" + "math/big" + "sort" + "sync" + "sync/atomic" + "time" + + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/prque" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" +) + +const ( + // chainHeadChanSize is the size of channel listening to ChainHeadEvent. + chainHeadChanSize = 10 + + // txSlotSize is used to calculate how many data slots a single transaction + // takes up based on its size. The slots are used as DoS protection, ensuring + // that validating a new transaction remains a constant operation (in reality + // O(maxslots), where max slots are 4 currently). + txSlotSize = 32 * 1024 + + // txMaxSize is the maximum size a single transaction can have. This field has + // non-trivial consequences: larger transactions are significantly harder and + // more expensive to propagate; larger transactions also take more resources + // to validate whether they fit into the pool or not. + txMaxSize = 4 * txSlotSize // 128KB +) + +var ( + // ErrAlreadyKnown is returned if the transactions is already contained + // within the pool. + ErrAlreadyKnown = errors.New("already known") + + // ErrInvalidSender is returned if the transaction contains an invalid signature. + ErrInvalidSender = errors.New("invalid sender") + + // ErrUnderpriced is returned if a transaction's gas price is below the minimum + // configured for the transaction pool. + ErrUnderpriced = errors.New("transaction underpriced") + + // ErrTxPoolOverflow is returned if the transaction pool is full and can't accpet + // another remote transaction. + ErrTxPoolOverflow = errors.New("txpool is full") + + // ErrReplaceUnderpriced is returned if a transaction is attempted to be replaced + // with a different one without the required price bump. + ErrReplaceUnderpriced = errors.New("replacement transaction underpriced") + + // ErrGasLimit is returned if a transaction's requested gas limit exceeds the + // maximum allowance of the current block. + ErrGasLimit = errors.New("exceeds block gas limit") + + // ErrNegativeValue is a sanity error to ensure no one is able to specify a + // transaction with a negative value. + ErrNegativeValue = errors.New("negative value") + + // ErrOversizedData is returned if the input data of a transaction is greater + // than some meaningful limit a user might use. This is not a consensus error + // making the transaction invalid, rather a DOS protection. + ErrOversizedData = errors.New("oversized data") +) + +var ( + evictionInterval = time.Minute // Time interval to check for evictable transactions + statsReportInterval = 8 * time.Second // Time interval to report transaction pool stats + baseFeeUpdateInterval = 10 * time.Second // Time interval at which to schedule a base fee update for the tx pool after SubnetEVM is enabled +) + +var ( + // Metrics for the pending pool + pendingDiscardMeter = metrics.NewRegisteredMeter("txpool/pending/discard", nil) + pendingReplaceMeter = metrics.NewRegisteredMeter("txpool/pending/replace", nil) + pendingRateLimitMeter = metrics.NewRegisteredMeter("txpool/pending/ratelimit", nil) // Dropped due to rate limiting + pendingNofundsMeter = metrics.NewRegisteredMeter("txpool/pending/nofunds", nil) // Dropped due to out-of-funds + + // Metrics for the queued pool + queuedDiscardMeter = metrics.NewRegisteredMeter("txpool/queued/discard", nil) + queuedReplaceMeter = metrics.NewRegisteredMeter("txpool/queued/replace", nil) + queuedRateLimitMeter = metrics.NewRegisteredMeter("txpool/queued/ratelimit", nil) // Dropped due to rate limiting + queuedNofundsMeter = metrics.NewRegisteredMeter("txpool/queued/nofunds", nil) // Dropped due to out-of-funds + queuedEvictionMeter = metrics.NewRegisteredMeter("txpool/queued/eviction", nil) // Dropped due to lifetime + + // General tx metrics + knownTxMeter = metrics.NewRegisteredMeter("txpool/known", nil) + validTxMeter = metrics.NewRegisteredMeter("txpool/valid", nil) + invalidTxMeter = metrics.NewRegisteredMeter("txpool/invalid", nil) + underpricedTxMeter = metrics.NewRegisteredMeter("txpool/underpriced", nil) + overflowedTxMeter = metrics.NewRegisteredMeter("txpool/overflowed", nil) + // throttleTxMeter counts how many transactions are rejected due to too-many-changes between + // txpool reorgs. + throttleTxMeter = metrics.NewRegisteredMeter("txpool/throttle", nil) + // reorgDurationTimer measures how long time a txpool reorg takes. + reorgDurationTimer = metrics.NewRegisteredTimer("txpool/reorgtime", nil) + // dropBetweenReorgHistogram counts how many drops we experience between two reorg runs. It is expected + // that this number is pretty low, since txpool reorgs happen very frequently. + dropBetweenReorgHistogram = metrics.NewRegisteredHistogram("txpool/dropbetweenreorg", nil, metrics.NewExpDecaySample(1028, 0.015)) + + pendingGauge = metrics.NewRegisteredGauge("txpool/pending", nil) + queuedGauge = metrics.NewRegisteredGauge("txpool/queued", nil) + localGauge = metrics.NewRegisteredGauge("txpool/local", nil) + slotsGauge = metrics.NewRegisteredGauge("txpool/slots", nil) + + reheapTimer = metrics.NewRegisteredTimer("txpool/reheap", nil) +) + +// TxStatus is the current status of a transaction as seen by the pool. +type TxStatus uint + +const ( + TxStatusUnknown TxStatus = iota + TxStatusQueued + TxStatusPending + TxStatusIncluded +) + +// blockChain provides the state of blockchain and current gas limit to do +// some pre checks in tx pool and event subscribers. +type blockChain interface { + CurrentBlock() *types.Block + GetBlock(hash common.Hash, number uint64) *types.Block + StateAt(root common.Hash) (*state.StateDB, error) + SenderCacher() *TxSenderCacher + + SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription +} + +// TxPoolConfig are the configuration parameters of the transaction pool. +type TxPoolConfig struct { + Locals []common.Address // Addresses that should be treated by default as local + NoLocals bool // Whether local transaction handling should be disabled + Journal string // Journal of local transactions to survive node restarts + Rejournal time.Duration // Time interval to regenerate the local transaction journal + + PriceLimit uint64 // Minimum gas price to enforce for acceptance into the pool + PriceBump uint64 // Minimum price bump percentage to replace an already existing transaction (nonce) + + AccountSlots uint64 // Number of executable transaction slots guaranteed per account + GlobalSlots uint64 // Maximum number of executable transaction slots for all accounts + AccountQueue uint64 // Maximum number of non-executable transaction slots permitted per account + GlobalQueue uint64 // Maximum number of non-executable transaction slots for all accounts + + Lifetime time.Duration // Maximum amount of time non-executable transaction are queued +} + +// DefaultTxPoolConfig contains the default configurations for the transaction +// pool. +var DefaultTxPoolConfig = TxPoolConfig{ + Journal: "transactions.rlp", + Rejournal: time.Hour, + + PriceLimit: 1, + PriceBump: 10, + + AccountSlots: 16, + GlobalSlots: 4096 + 1024, // urgent + floating queue capacity with 4:1 ratio + AccountQueue: 64, + GlobalQueue: 1024, + + Lifetime: 3 * time.Hour, +} + +// sanitize checks the provided user configurations and changes anything that's +// unreasonable or unworkable. +func (config *TxPoolConfig) sanitize() TxPoolConfig { + conf := *config + if conf.Rejournal < time.Second { + log.Warn("Sanitizing invalid txpool journal time", "provided", conf.Rejournal, "updated", time.Second) + conf.Rejournal = time.Second + } + if conf.PriceLimit < 1 { + log.Warn("Sanitizing invalid txpool price limit", "provided", conf.PriceLimit, "updated", DefaultTxPoolConfig.PriceLimit) + conf.PriceLimit = DefaultTxPoolConfig.PriceLimit + } + if conf.PriceBump < 1 { + log.Warn("Sanitizing invalid txpool price bump", "provided", conf.PriceBump, "updated", DefaultTxPoolConfig.PriceBump) + conf.PriceBump = DefaultTxPoolConfig.PriceBump + } + if conf.AccountSlots < 1 { + log.Warn("Sanitizing invalid txpool account slots", "provided", conf.AccountSlots, "updated", DefaultTxPoolConfig.AccountSlots) + conf.AccountSlots = DefaultTxPoolConfig.AccountSlots + } + if conf.GlobalSlots < 1 { + log.Warn("Sanitizing invalid txpool global slots", "provided", conf.GlobalSlots, "updated", DefaultTxPoolConfig.GlobalSlots) + conf.GlobalSlots = DefaultTxPoolConfig.GlobalSlots + } + if conf.AccountQueue < 1 { + log.Warn("Sanitizing invalid txpool account queue", "provided", conf.AccountQueue, "updated", DefaultTxPoolConfig.AccountQueue) + conf.AccountQueue = DefaultTxPoolConfig.AccountQueue + } + if conf.GlobalQueue < 1 { + log.Warn("Sanitizing invalid txpool global queue", "provided", conf.GlobalQueue, "updated", DefaultTxPoolConfig.GlobalQueue) + conf.GlobalQueue = DefaultTxPoolConfig.GlobalQueue + } + if conf.Lifetime < 1 { + log.Warn("Sanitizing invalid txpool lifetime", "provided", conf.Lifetime, "updated", DefaultTxPoolConfig.Lifetime) + conf.Lifetime = DefaultTxPoolConfig.Lifetime + } + return conf +} + +// TxPool contains all currently known transactions. Transactions +// enter the pool when they are received from the network or submitted +// locally. They exit the pool when they are included in the blockchain. +// +// The pool separates processable transactions (which can be applied to the +// current state) and future transactions. Transactions move between those +// two states over time as they are received and processed. +type TxPool struct { + config TxPoolConfig + chainconfig *params.ChainConfig + chain blockChain + gasPrice *big.Int + minimumFee *big.Int + txFeed event.Feed + headFeed event.Feed + reorgFeed event.Feed + scope event.SubscriptionScope + signer types.Signer + mu sync.RWMutex + + istanbul bool // Fork indicator whether we are in the istanbul stage. + eip2718 bool // Fork indicator whether we are using EIP-2718 type transactions. + eip1559 bool // Fork indicator whether we are using EIP-1559 type transactions. + + currentHead *types.Header + // [currentState] is the state of the blockchain head. It is reset whenever + // head changes. + currentState *state.StateDB + // [currentStateLock] is required to allow concurrent access to address nonces + // and balances during reorgs and gossip handling. + currentStateLock sync.Mutex + + pendingNonces *txNoncer // Pending state tracking virtual nonces + currentMaxGas uint64 // Current gas limit for transaction caps + + locals *accountSet // Set of local transaction to exempt from eviction rules + journal *txJournal // Journal of local transaction to back up to disk + + pending map[common.Address]*txList // All currently processable transactions + queue map[common.Address]*txList // Queued but non-processable transactions + beats map[common.Address]time.Time // Last heartbeat from each known account + all *txLookup // All transactions to allow lookups + priced *txPricedList // All transactions sorted by price + + chainHeadCh chan ChainHeadEvent + chainHeadSub event.Subscription + reqResetCh chan *txpoolResetRequest + reqPromoteCh chan *accountSet + queueTxEventCh chan *types.Transaction + reorgDoneCh chan chan struct{} + reorgShutdownCh chan struct{} // requests shutdown of scheduleReorgLoop + generalShutdownChan chan struct{} // closed when the transaction pool is stopped. Any goroutine can listen + // to this to be notified if it should shut down. + wg sync.WaitGroup // tracks loop, scheduleReorgLoop + initDoneCh chan struct{} // is closed once the pool is initialized (for tests) + + changesSinceReorg int // A counter for how many drops we've performed in-between reorg. +} + +type txpoolResetRequest struct { + oldHead, newHead *types.Header +} + +// NewTxPool creates a new transaction pool to gather, sort and filter inbound +// transactions from the network. +func NewTxPool(config TxPoolConfig, chainconfig *params.ChainConfig, chain blockChain) *TxPool { + // Sanitize the input to ensure no vulnerable gas prices are set + config = (&config).sanitize() + + // Create the transaction pool with its initial settings + pool := &TxPool{ + config: config, + chainconfig: chainconfig, + chain: chain, + signer: types.LatestSigner(chainconfig), + pending: make(map[common.Address]*txList), + queue: make(map[common.Address]*txList), + beats: make(map[common.Address]time.Time), + all: newTxLookup(), + chainHeadCh: make(chan ChainHeadEvent, chainHeadChanSize), + reqResetCh: make(chan *txpoolResetRequest), + reqPromoteCh: make(chan *accountSet), + queueTxEventCh: make(chan *types.Transaction), + reorgDoneCh: make(chan chan struct{}), + reorgShutdownCh: make(chan struct{}), + initDoneCh: make(chan struct{}), + generalShutdownChan: make(chan struct{}), + gasPrice: new(big.Int).SetUint64(config.PriceLimit), + } + pool.locals = newAccountSet(pool.signer) + for _, addr := range config.Locals { + log.Info("Setting new local account", "address", addr) + pool.locals.add(addr) + } + pool.priced = newTxPricedList(pool.all) + pool.reset(nil, chain.CurrentBlock().Header()) + + // Start the reorg loop early so it can handle requests generated during journal loading. + pool.wg.Add(1) + go pool.scheduleReorgLoop() + + // If local transactions and journaling is enabled, load from disk + if !config.NoLocals && config.Journal != "" { + pool.journal = newTxJournal(config.Journal) + + if err := pool.journal.load(pool.AddLocals); err != nil { + log.Warn("Failed to load transaction journal", "err", err) + } + if err := pool.journal.rotate(pool.local()); err != nil { + log.Warn("Failed to rotate transaction journal", "err", err) + } + } + + // Subscribe events from blockchain and start the main event loop. + pool.chainHeadSub = pool.chain.SubscribeChainHeadEvent(pool.chainHeadCh) + pool.wg.Add(1) + go pool.loop() + + pool.startPeriodicFeeUpdate() + + return pool +} + +// loop is the transaction pool's main event loop, waiting for and reacting to +// outside blockchain events as well as for various reporting and transaction +// eviction events. +func (pool *TxPool) loop() { + defer pool.wg.Done() + + var ( + prevPending, prevQueued, prevStales int + // Start the stats reporting and transaction eviction tickers + report = time.NewTicker(statsReportInterval) + evict = time.NewTicker(evictionInterval) + journal = time.NewTicker(pool.config.Rejournal) + // Track the previous head headers for transaction reorgs + head = pool.chain.CurrentBlock() + ) + defer report.Stop() + defer evict.Stop() + defer journal.Stop() + + // Notify tests that the init phase is done + close(pool.initDoneCh) + for { + select { + // Handle ChainHeadEvent + case ev := <-pool.chainHeadCh: + if ev.Block != nil { + pool.requestReset(head.Header(), ev.Block.Header()) + head = ev.Block + pool.headFeed.Send(NewTxPoolHeadEvent{Block: head}) + } + + // System shutdown. + case <-pool.chainHeadSub.Err(): + close(pool.reorgShutdownCh) + return + + // Handle stats reporting ticks + case <-report.C: + pool.mu.RLock() + pending, queued := pool.stats() + pool.mu.RUnlock() + stales := int(atomic.LoadInt64(&pool.priced.stales)) + + if pending != prevPending || queued != prevQueued || stales != prevStales { + log.Debug("Transaction pool status report", "executable", pending, "queued", queued, "stales", stales) + prevPending, prevQueued, prevStales = pending, queued, stales + } + + // Handle inactive account transaction eviction + case <-evict.C: + pool.mu.Lock() + for addr := range pool.queue { + // Skip local transactions from the eviction mechanism + if pool.locals.contains(addr) { + continue + } + // Any non-locals old enough should be removed + if time.Since(pool.beats[addr]) > pool.config.Lifetime { + list := pool.queue[addr].Flatten() + for _, tx := range list { + pool.removeTx(tx.Hash(), true) + } + queuedEvictionMeter.Mark(int64(len(list))) + } + } + pool.mu.Unlock() + + // Handle local transaction journal rotation + case <-journal.C: + if pool.journal != nil { + pool.mu.Lock() + if err := pool.journal.rotate(pool.local()); err != nil { + log.Warn("Failed to rotate local tx journal", "err", err) + } + pool.mu.Unlock() + } + } + } +} + +// Stop terminates the transaction pool. +func (pool *TxPool) Stop() { + // Unsubscribe all subscriptions registered from txpool + pool.scope.Close() + + close(pool.generalShutdownChan) + // Unsubscribe subscriptions registered from blockchain + pool.chainHeadSub.Unsubscribe() + pool.wg.Wait() + + if pool.journal != nil { + pool.journal.close() + } + log.Info("Transaction pool stopped") +} + +// SubscribeNewTxsEvent registers a subscription of NewTxsEvent and +// starts sending event to the given channel. +func (pool *TxPool) SubscribeNewTxsEvent(ch chan<- NewTxsEvent) event.Subscription { + return pool.scope.Track(pool.txFeed.Subscribe(ch)) +} + +// SubscribeNewHeadEvent registers a subscription of NewHeadEvent and +// starts sending event to the given channel. +func (pool *TxPool) SubscribeNewHeadEvent(ch chan<- NewTxPoolHeadEvent) event.Subscription { + return pool.scope.Track(pool.headFeed.Subscribe(ch)) +} + +// SubscribeNewReorgEvent registers a subscription of NewReorgEvent and +// starts sending event to the given channel. +func (pool *TxPool) SubscribeNewReorgEvent(ch chan<- NewTxPoolReorgEvent) event.Subscription { + return pool.scope.Track(pool.reorgFeed.Subscribe(ch)) +} + +// GasPrice returns the current gas price enforced by the transaction pool. +func (pool *TxPool) GasPrice() *big.Int { + pool.mu.RLock() + defer pool.mu.RUnlock() + + return new(big.Int).Set(pool.gasPrice) +} + +// SetGasPrice updates the minimum price required by the transaction pool for a +// new transaction, and drops all transactions below this threshold. +func (pool *TxPool) SetGasPrice(price *big.Int) { + pool.mu.Lock() + defer pool.mu.Unlock() + + old := pool.gasPrice + pool.gasPrice = price + // if the min miner fee increased, remove transactions below the new threshold + if price.Cmp(old) > 0 { + // pool.priced is sorted by GasFeeCap, so we have to iterate through pool.all instead + drop := pool.all.RemotesBelowTip(price) + for _, tx := range drop { + pool.removeTx(tx.Hash(), false) + } + pool.priced.Removed(len(drop)) + } + + log.Info("Transaction pool price threshold updated", "price", price) +} + +func (pool *TxPool) SetMinFee(minFee *big.Int) { + pool.mu.Lock() + defer pool.mu.Unlock() + + pool.minimumFee = minFee +} + +// Nonce returns the next nonce of an account, with all transactions executable +// by the pool already applied on top. +func (pool *TxPool) Nonce(addr common.Address) uint64 { + pool.mu.RLock() + defer pool.mu.RUnlock() + + return pool.pendingNonces.get(addr) +} + +// Stats retrieves the current pool stats, namely the number of pending and the +// number of queued (non-executable) transactions. +func (pool *TxPool) Stats() (int, int) { + pool.mu.RLock() + defer pool.mu.RUnlock() + + return pool.stats() +} + +// stats retrieves the current pool stats, namely the number of pending and the +// number of queued (non-executable) transactions. +func (pool *TxPool) stats() (int, int) { + pending := 0 + for _, list := range pool.pending { + pending += list.Len() + } + queued := 0 + for _, list := range pool.queue { + queued += list.Len() + } + return pending, queued +} + +// Content retrieves the data content of the transaction pool, returning all the +// pending as well as queued transactions, grouped by account and sorted by nonce. +func (pool *TxPool) Content() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) { + pool.mu.Lock() + defer pool.mu.Unlock() + + pending := make(map[common.Address]types.Transactions) + for addr, list := range pool.pending { + pending[addr] = list.Flatten() + } + queued := make(map[common.Address]types.Transactions) + for addr, list := range pool.queue { + queued[addr] = list.Flatten() + } + return pending, queued +} + +// ContentFrom retrieves the data content of the transaction pool, returning the +// pending as well as queued transactions of this address, grouped by nonce. +func (pool *TxPool) ContentFrom(addr common.Address) (types.Transactions, types.Transactions) { + pool.mu.RLock() + defer pool.mu.RUnlock() + + var pending types.Transactions + if list, ok := pool.pending[addr]; ok { + pending = list.Flatten() + } + var queued types.Transactions + if list, ok := pool.queue[addr]; ok { + queued = list.Flatten() + } + return pending, queued +} + +// Pending retrieves all currently processable transactions, grouped by origin +// account and sorted by nonce. The returned transaction set is a copy and can be +// freely modified by calling code. +// +// The enforceTips parameter can be used to do an extra filtering on the pending +// transactions and only return those whose **effective** tip is large enough in +// the next pending execution environment. +func (pool *TxPool) Pending(enforceTips bool) map[common.Address]types.Transactions { + pool.mu.Lock() + defer pool.mu.Unlock() + + pending := make(map[common.Address]types.Transactions) + for addr, list := range pool.pending { + txs := list.Flatten() + + // If the miner requests tip enforcement, cap the lists now + if enforceTips && !pool.locals.contains(addr) { + for i, tx := range txs { + if tx.EffectiveGasTipIntCmp(pool.gasPrice, pool.priced.urgent.baseFee) < 0 { + txs = txs[:i] + break + } + } + } + if len(txs) > 0 { + pending[addr] = txs + } + } + return pending +} + +// Locals retrieves the accounts currently considered local by the pool. +func (pool *TxPool) Locals() []common.Address { + pool.mu.Lock() + defer pool.mu.Unlock() + + return pool.locals.flatten() +} + +// local retrieves all currently known local transactions, grouped by origin +// account and sorted by nonce. The returned transaction set is a copy and can be +// freely modified by calling code. +func (pool *TxPool) local() map[common.Address]types.Transactions { + txs := make(map[common.Address]types.Transactions) + for addr := range pool.locals.accounts { + if pending := pool.pending[addr]; pending != nil { + txs[addr] = append(txs[addr], pending.Flatten()...) + } + if queued := pool.queue[addr]; queued != nil { + txs[addr] = append(txs[addr], queued.Flatten()...) + } + } + return txs +} + +func (pool *TxPool) CheckNonceOrdering(from common.Address, txNonce uint64) error { + pool.currentStateLock.Lock() + defer pool.currentStateLock.Unlock() + + // Ensure the transaction adheres to nonce ordering + if currentNonce, txNonce := pool.currentState.GetNonce(from), txNonce; currentNonce > txNonce { + return fmt.Errorf("%w: address %s current nonce (%d) > tx nonce (%d)", + ErrNonceTooLow, from.Hex(), currentNonce, txNonce) + } + return nil +} + +// validateTx checks whether a transaction is valid according to the consensus +// rules and adheres to some heuristic limits of the local node (price and size). +func (pool *TxPool) validateTx(tx *types.Transaction, local bool) error { + // Accept only legacy transactions until EIP-2718/2930 activates. + if !pool.eip2718 && tx.Type() != types.LegacyTxType { + return ErrTxTypeNotSupported + } + // Reject dynamic fee transactions until EIP-1559 activates. + if !pool.eip1559 && tx.Type() == types.DynamicFeeTxType { + return ErrTxTypeNotSupported + } + // Reject transactions over defined size to prevent DOS attacks + if uint64(tx.Size()) > txMaxSize { + return ErrOversizedData + } + // Transactions can't be negative. This may never happen using RLP decoded + // transactions but may occur if you create a transaction using the RPC. + if tx.Value().Sign() < 0 { + return ErrNegativeValue + } + // Ensure the transaction doesn't exceed the current block limit gas. + if txGas := tx.Gas(); pool.currentMaxGas < txGas { + return fmt.Errorf("%w: tx gas (%d) > current max gas (%d)", ErrGasLimit, txGas, pool.currentMaxGas) + } + // Sanity check for extremely large numbers + if tx.GasFeeCap().BitLen() > 256 { + return ErrFeeCapVeryHigh + } + if tx.GasTipCap().BitLen() > 256 { + return ErrTipVeryHigh + } + // Ensure gasFeeCap is greater than or equal to gasTipCap. + if tx.GasFeeCapIntCmp(tx.GasTipCap()) < 0 { + return ErrTipAboveFeeCap + } + // Make sure the transaction is signed properly. + from, err := types.Sender(pool.signer, tx) + if err != nil { + return ErrInvalidSender + } + // Drop non-local transactions under our own minimal accepted gas price or tip + if !local && tx.GasTipCapIntCmp(pool.gasPrice) < 0 { + return fmt.Errorf("%w: address %s have gas tip cap (%d) < pool gas tip cap (%d)", ErrUnderpriced, from.Hex(), tx.GasTipCap(), pool.gasPrice) + } + // Drop the transaction if the gas fee cap is below the pool's minimum fee + if pool.minimumFee != nil && tx.GasFeeCapIntCmp(pool.minimumFee) < 0 { + return fmt.Errorf("%w: address %s have gas fee cap (%d) < pool minimum fee cap (%d)", ErrUnderpriced, from.Hex(), tx.GasFeeCap(), pool.minimumFee) + } + // Ensure the transaction adheres to nonce ordering + if err := pool.CheckNonceOrdering(from, tx.Nonce()); err != nil { + return err + } + // Transactor should have enough funds to cover the costs + // cost == V + GP * GL + pool.currentStateLock.Lock() + if balance, cost := pool.currentState.GetBalance(from), tx.Cost(); balance.Cmp(cost) < 0 { + pool.currentStateLock.Unlock() + return fmt.Errorf("%w: address %s have (%d) want (%d)", ErrInsufficientFunds, from.Hex(), balance, cost) + } + pool.currentStateLock.Unlock() + // Ensure the transaction has more gas than the basic tx fee. + intrGas, err := IntrinsicGas(tx.Data(), tx.AccessList(), tx.To() == nil, true, pool.istanbul) + if err != nil { + return err + } + if txGas := tx.Gas(); txGas < intrGas { + return fmt.Errorf("%w: address %v tx gas (%v) < intrinsic gas (%v)", ErrIntrinsicGas, from.Hex(), tx.Gas(), intrGas) + } + return nil +} + +// add validates a transaction and inserts it into the non-executable queue for later +// pending promotion and execution. If the transaction is a replacement for an already +// pending or queued one, it overwrites the previous transaction if its price is higher. +// +// If a newly added transaction is marked as local, its sending account will be +// be added to the allowlist, preventing any associated transaction from being dropped +// out of the pool due to pricing constraints. +func (pool *TxPool) add(tx *types.Transaction, local bool) (replaced bool, err error) { + // If the transaction is already known, discard it + hash := tx.Hash() + if pool.all.Get(hash) != nil { + log.Trace("Discarding already known transaction", "hash", hash) + knownTxMeter.Mark(1) + return false, ErrAlreadyKnown + } + // Make the local flag. If it's from local source or it's from the network but + // the sender is marked as local previously, treat it as the local transaction. + isLocal := local || pool.locals.containsTx(tx) + + // If the transaction fails basic validation, discard it + if err := pool.validateTx(tx, isLocal); err != nil { + log.Trace("Discarding invalid transaction", "hash", hash, "err", err) + invalidTxMeter.Mark(1) + return false, err + } + // If the transaction pool is full, discard underpriced transactions + if uint64(pool.all.Slots()+numSlots(tx)) > pool.config.GlobalSlots+pool.config.GlobalQueue { + // If the new transaction is underpriced, don't accept it + if !isLocal && pool.priced.Underpriced(tx) { + log.Trace("Discarding underpriced transaction", "hash", hash, "gasTipCap", tx.GasTipCap(), "gasFeeCap", tx.GasFeeCap()) + underpricedTxMeter.Mark(1) + return false, ErrUnderpriced + } + // We're about to replace a transaction. The reorg does a more thorough + // analysis of what to remove and how, but it runs async. We don't want to + // do too many replacements between reorg-runs, so we cap the number of + // replacements to 25% of the slots + if pool.changesSinceReorg > int(pool.config.GlobalSlots/4) { + throttleTxMeter.Mark(1) + return false, ErrTxPoolOverflow + } + + // New transaction is better than our worse ones, make room for it. + // If it's a local transaction, forcibly discard all available transactions. + // Otherwise if we can't make enough room for new one, abort the operation. + drop, success := pool.priced.Discard(pool.all.Slots()-int(pool.config.GlobalSlots+pool.config.GlobalQueue)+numSlots(tx), isLocal) + + // Special case, we still can't make the room for the new remote one. + if !isLocal && !success { + log.Trace("Discarding overflown transaction", "hash", hash) + overflowedTxMeter.Mark(1) + return false, ErrTxPoolOverflow + } + // Bump the counter of rejections-since-reorg + pool.changesSinceReorg += len(drop) + // Kick out the underpriced remote transactions. + for _, tx := range drop { + log.Trace("Discarding freshly underpriced transaction", "hash", tx.Hash(), "gasTipCap", tx.GasTipCap(), "gasFeeCap", tx.GasFeeCap()) + underpricedTxMeter.Mark(1) + pool.removeTx(tx.Hash(), false) + } + } + // Try to replace an existing transaction in the pending pool + from, _ := types.Sender(pool.signer, tx) // already validated + if list := pool.pending[from]; list != nil && list.Overlaps(tx) { + // Nonce already pending, check if required price bump is met + inserted, old := list.Add(tx, pool.config.PriceBump) + if !inserted { + pendingDiscardMeter.Mark(1) + return false, ErrReplaceUnderpriced + } + // New transaction is better, replace old one + if old != nil { + pool.all.Remove(old.Hash()) + pool.priced.Removed(1) + pendingReplaceMeter.Mark(1) + } + pool.all.Add(tx, isLocal) + pool.priced.Put(tx, isLocal) + pool.journalTx(from, tx) + pool.queueTxEvent(tx) + log.Trace("Pooled new executable transaction", "hash", hash, "from", from, "to", tx.To()) + + // Successful promotion, bump the heartbeat + pool.beats[from] = time.Now() + return old != nil, nil + } + // New transaction isn't replacing a pending one, push into queue + replaced, err = pool.enqueueTx(hash, tx, isLocal, true) + if err != nil { + return false, err + } + // Mark local addresses and journal local transactions + if local && !pool.locals.contains(from) { + log.Info("Setting new local account", "address", from) + pool.locals.add(from) + pool.priced.Removed(pool.all.RemoteToLocals(pool.locals)) // Migrate the remotes if it's marked as local first time. + } + if isLocal { + localGauge.Inc(1) + } + pool.journalTx(from, tx) + + log.Trace("Pooled new future transaction", "hash", hash, "from", from, "to", tx.To()) + return replaced, nil +} + +// enqueueTx inserts a new transaction into the non-executable transaction queue. +// +// Note, this method assumes the pool lock is held! +func (pool *TxPool) enqueueTx(hash common.Hash, tx *types.Transaction, local bool, addAll bool) (bool, error) { + // Try to insert the transaction into the future queue + from, _ := types.Sender(pool.signer, tx) // already validated + if pool.queue[from] == nil { + pool.queue[from] = newTxList(false) + } + inserted, old := pool.queue[from].Add(tx, pool.config.PriceBump) + if !inserted { + // An older transaction was better, discard this + queuedDiscardMeter.Mark(1) + return false, ErrReplaceUnderpriced + } + // Discard any previous transaction and mark this + if old != nil { + pool.all.Remove(old.Hash()) + pool.priced.Removed(1) + queuedReplaceMeter.Mark(1) + } else { + // Nothing was replaced, bump the queued counter + queuedGauge.Inc(1) + } + // If the transaction isn't in lookup set but it's expected to be there, + // show the error log. + if pool.all.Get(hash) == nil && !addAll { + log.Error("Missing transaction in lookup set, please report the issue", "hash", hash) + } + if addAll { + pool.all.Add(tx, local) + pool.priced.Put(tx, local) + } + // If we never record the heartbeat, do it right now. + if _, exist := pool.beats[from]; !exist { + pool.beats[from] = time.Now() + } + return old != nil, nil +} + +// journalTx adds the specified transaction to the local disk journal if it is +// deemed to have been sent from a local account. +func (pool *TxPool) journalTx(from common.Address, tx *types.Transaction) { + // Only journal if it's enabled and the transaction is local + if pool.journal == nil || !pool.locals.contains(from) { + return + } + if err := pool.journal.insert(tx); err != nil { + log.Warn("Failed to journal local transaction", "err", err) + } +} + +// promoteTx adds a transaction to the pending (processable) list of transactions +// and returns whether it was inserted or an older was better. +// +// Note, this method assumes the pool lock is held! +func (pool *TxPool) promoteTx(addr common.Address, hash common.Hash, tx *types.Transaction) bool { + // Try to insert the transaction into the pending queue + if pool.pending[addr] == nil { + pool.pending[addr] = newTxList(true) + } + list := pool.pending[addr] + + inserted, old := list.Add(tx, pool.config.PriceBump) + if !inserted { + // An older transaction was better, discard this + pool.all.Remove(hash) + pool.priced.Removed(1) + pendingDiscardMeter.Mark(1) + return false + } + // Otherwise discard any previous transaction and mark this + if old != nil { + pool.all.Remove(old.Hash()) + pool.priced.Removed(1) + pendingReplaceMeter.Mark(1) + } else { + // Nothing was replaced, bump the pending counter + pendingGauge.Inc(1) + } + // Set the potentially new pending nonce and notify any subsystems of the new tx + pool.pendingNonces.set(addr, tx.Nonce()+1) + + // Successful promotion, bump the heartbeat + pool.beats[addr] = time.Now() + return true +} + +// AddLocals enqueues a batch of transactions into the pool if they are valid, marking the +// senders as a local ones, ensuring they go around the local pricing constraints. +// +// This method is used to add transactions from the RPC API and performs synchronous pool +// reorganization and event propagation. +func (pool *TxPool) AddLocals(txs []*types.Transaction) []error { + return pool.addTxs(txs, !pool.config.NoLocals, true) +} + +// AddLocal enqueues a single local transaction into the pool if it is valid. This is +// a convenience wrapper aroundd AddLocals. +func (pool *TxPool) AddLocal(tx *types.Transaction) error { + errs := pool.AddLocals([]*types.Transaction{tx}) + return errs[0] +} + +// AddRemotes enqueues a batch of transactions into the pool if they are valid. If the +// senders are not among the locally tracked ones, full pricing constraints will apply. +// +// This method is used to add transactions from the p2p network and does not wait for pool +// reorganization and internal event propagation. +func (pool *TxPool) AddRemotes(txs []*types.Transaction) []error { + return pool.addTxs(txs, false, false) +} + +// This is like AddRemotes, but waits for pool reorganization. Tests use this method. +func (pool *TxPool) AddRemotesSync(txs []*types.Transaction) []error { + return pool.addTxs(txs, false, true) +} + +// This is like AddRemotes with a single transaction, but waits for pool reorganization. Tests use this method. +func (pool *TxPool) addRemoteSync(tx *types.Transaction) error { + errs := pool.AddRemotesSync([]*types.Transaction{tx}) + return errs[0] +} + +// AddRemote enqueues a single transaction into the pool if it is valid. This is a convenience +// wrapper around AddRemotes. +// +// Deprecated: use AddRemotes +func (pool *TxPool) AddRemote(tx *types.Transaction) error { + errs := pool.AddRemotes([]*types.Transaction{tx}) + return errs[0] +} + +// addTxs attempts to queue a batch of transactions if they are valid. +func (pool *TxPool) addTxs(txs []*types.Transaction, local, sync bool) []error { + // Filter out known ones without obtaining the pool lock or recovering signatures + var ( + errs = make([]error, len(txs)) + news = make([]*types.Transaction, 0, len(txs)) + ) + for i, tx := range txs { + // If the transaction is known, pre-set the error slot + if pool.all.Get(tx.Hash()) != nil { + errs[i] = ErrAlreadyKnown + knownTxMeter.Mark(1) + continue + } + // Exclude transactions with invalid signatures as soon as + // possible and cache senders in transactions before + // obtaining lock + _, err := types.Sender(pool.signer, tx) + if err != nil { + errs[i] = ErrInvalidSender + invalidTxMeter.Mark(1) + continue + } + // Accumulate all unknown transactions for deeper processing + news = append(news, tx) + } + if len(news) == 0 { + return errs + } + + // Process all the new transaction and merge any errors into the original slice + pool.mu.Lock() + newErrs, dirtyAddrs := pool.addTxsLocked(news, local) + pool.mu.Unlock() + + nilSlot := 0 + for _, err := range newErrs { + for errs[nilSlot] != nil { + nilSlot++ + } + errs[nilSlot] = err + nilSlot++ + } + // Reorg the pool internals if needed and return + done := pool.requestPromoteExecutables(dirtyAddrs) + if sync { + <-done + } + return errs +} + +// addTxsLocked attempts to queue a batch of transactions if they are valid. +// The transaction pool lock must be held. +func (pool *TxPool) addTxsLocked(txs []*types.Transaction, local bool) ([]error, *accountSet) { + dirty := newAccountSet(pool.signer) + errs := make([]error, len(txs)) + for i, tx := range txs { + replaced, err := pool.add(tx, local) + errs[i] = err + if err == nil && !replaced { + dirty.addTx(tx) + } + } + validTxMeter.Mark(int64(len(dirty.accounts))) + return errs, dirty +} + +// Status returns the status (unknown/pending/queued) of a batch of transactions +// identified by their hashes. +func (pool *TxPool) Status(hashes []common.Hash) []TxStatus { + status := make([]TxStatus, len(hashes)) + for i, hash := range hashes { + tx := pool.Get(hash) + if tx == nil { + continue + } + from, _ := types.Sender(pool.signer, tx) // already validated + pool.mu.RLock() + if txList := pool.pending[from]; txList != nil && txList.txs.items[tx.Nonce()] != nil { + status[i] = TxStatusPending + } else if txList := pool.queue[from]; txList != nil && txList.txs.items[tx.Nonce()] != nil { + status[i] = TxStatusQueued + } + // implicit else: the tx may have been included into a block between + // checking pool.Get and obtaining the lock. In that case, TxStatusUnknown is correct + pool.mu.RUnlock() + } + return status +} + +// Get returns a transaction if it is contained in the pool and nil otherwise. +func (pool *TxPool) Get(hash common.Hash) *types.Transaction { + return pool.all.Get(hash) +} + +// Has returns an indicator whether txpool has a transaction cached with the +// given hash. +func (pool *TxPool) Has(hash common.Hash) bool { + return pool.all.Get(hash) != nil +} + +// Has returns an indicator whether txpool has a local transaction cached with +// the given hash. +func (pool *TxPool) HasLocal(hash common.Hash) bool { + return pool.all.GetLocal(hash) != nil +} + +// removeTx removes a single transaction from the queue, moving all subsequent +// transactions back to the future queue. +func (pool *TxPool) removeTx(hash common.Hash, outofbound bool) { + // Fetch the transaction we wish to delete + tx := pool.all.Get(hash) + if tx == nil { + return + } + addr, _ := types.Sender(pool.signer, tx) // already validated during insertion + + // Remove it from the list of known transactions + pool.all.Remove(hash) + if outofbound { + pool.priced.Removed(1) + } + if pool.locals.contains(addr) { + localGauge.Dec(1) + } + // Remove the transaction from the pending lists and reset the account nonce + if pending := pool.pending[addr]; pending != nil { + if removed, invalids := pending.Remove(tx); removed { + // If no more pending transactions are left, remove the list + if pending.Empty() { + delete(pool.pending, addr) + } + // Postpone any invalidated transactions + for _, tx := range invalids { + // Internal shuffle shouldn't touch the lookup set. + pool.enqueueTx(tx.Hash(), tx, false, false) + } + // Update the account nonce if needed + pool.pendingNonces.setIfLower(addr, tx.Nonce()) + // Reduce the pending counter + pendingGauge.Dec(int64(1 + len(invalids))) + return + } + } + // Transaction is in the future queue + if future := pool.queue[addr]; future != nil { + if removed, _ := future.Remove(tx); removed { + // Reduce the queued counter + queuedGauge.Dec(1) + } + if future.Empty() { + delete(pool.queue, addr) + delete(pool.beats, addr) + } + } +} + +// requestReset requests a pool reset to the new head block. +// The returned channel is closed when the reset has occurred. +func (pool *TxPool) requestReset(oldHead *types.Header, newHead *types.Header) chan struct{} { + select { + case pool.reqResetCh <- &txpoolResetRequest{oldHead, newHead}: + return <-pool.reorgDoneCh + case <-pool.reorgShutdownCh: + return pool.reorgShutdownCh + } +} + +// requestPromoteExecutables requests transaction promotion checks for the given addresses. +// The returned channel is closed when the promotion checks have occurred. +func (pool *TxPool) requestPromoteExecutables(set *accountSet) chan struct{} { + select { + case pool.reqPromoteCh <- set: + return <-pool.reorgDoneCh + case <-pool.reorgShutdownCh: + return pool.reorgShutdownCh + } +} + +// queueTxEvent enqueues a transaction event to be sent in the next reorg run. +func (pool *TxPool) queueTxEvent(tx *types.Transaction) { + select { + case pool.queueTxEventCh <- tx: + case <-pool.reorgShutdownCh: + } +} + +// scheduleReorgLoop schedules runs of reset and promoteExecutables. Code above should not +// call those methods directly, but request them being run using requestReset and +// requestPromoteExecutables instead. +func (pool *TxPool) scheduleReorgLoop() { + defer pool.wg.Done() + + var ( + curDone chan struct{} // non-nil while runReorg is active + nextDone = make(chan struct{}) + launchNextRun bool + reset *txpoolResetRequest + dirtyAccounts *accountSet + queuedEvents = make(map[common.Address]*txSortedMap) + ) + for { + // Launch next background reorg if needed + if curDone == nil && launchNextRun { + // Run the background reorg and announcements + go pool.runReorg(nextDone, reset, dirtyAccounts, queuedEvents) + + // Prepare everything for the next round of reorg + curDone, nextDone = nextDone, make(chan struct{}) + launchNextRun = false + + reset, dirtyAccounts = nil, nil + queuedEvents = make(map[common.Address]*txSortedMap) + } + + select { + case req := <-pool.reqResetCh: + // Reset request: update head if request is already pending. + if reset == nil { + reset = req + } else { + reset.newHead = req.newHead + } + launchNextRun = true + pool.reorgDoneCh <- nextDone + + case req := <-pool.reqPromoteCh: + // Promote request: update address set if request is already pending. + if dirtyAccounts == nil { + dirtyAccounts = req + } else { + dirtyAccounts.merge(req) + } + launchNextRun = true + pool.reorgDoneCh <- nextDone + + case tx := <-pool.queueTxEventCh: + // Queue up the event, but don't schedule a reorg. It's up to the caller to + // request one later if they want the events sent. + addr, _ := types.Sender(pool.signer, tx) + if _, ok := queuedEvents[addr]; !ok { + queuedEvents[addr] = newTxSortedMap() + } + queuedEvents[addr].Put(tx) + + case <-curDone: + curDone = nil + + case <-pool.reorgShutdownCh: + // Wait for current run to finish. + if curDone != nil { + <-curDone + } + close(nextDone) + return + } + } +} + +// runReorg runs reset and promoteExecutables on behalf of scheduleReorgLoop. +func (pool *TxPool) runReorg(done chan struct{}, reset *txpoolResetRequest, dirtyAccounts *accountSet, events map[common.Address]*txSortedMap) { + defer func(t0 time.Time) { + reorgDurationTimer.Update(time.Since(t0)) + }(time.Now()) + defer close(done) + + var promoteAddrs []common.Address + if dirtyAccounts != nil && reset == nil { + // Only dirty accounts need to be promoted, unless we're resetting. + // For resets, all addresses in the tx queue will be promoted and + // the flatten operation can be avoided. + promoteAddrs = dirtyAccounts.flatten() + } + pool.mu.Lock() + if reset != nil { + // Reset from the old head to the new, rescheduling any reorged transactions + pool.reset(reset.oldHead, reset.newHead) + + // Nonces were reset, discard any events that became stale + for addr := range events { + events[addr].Forward(pool.pendingNonces.get(addr)) + if events[addr].Len() == 0 { + delete(events, addr) + } + } + // Reset needs promote for all addresses + promoteAddrs = make([]common.Address, 0, len(pool.queue)) + for addr := range pool.queue { + promoteAddrs = append(promoteAddrs, addr) + } + } + // Check for pending transactions for every account that sent new ones + promoted := pool.promoteExecutables(promoteAddrs) + + // If a new block appeared, validate the pool of pending transactions. This will + // remove any transaction that has been included in the block or was invalidated + // because of another transaction (e.g. higher gas price). + if reset != nil { + pool.demoteUnexecutables() + if reset.newHead != nil && pool.chainconfig.IsSubnetEVM(new(big.Int).SetUint64(reset.newHead.Time)) { + _, baseFeeEstimate, err := dummy.CalcBaseFee(pool.chainconfig, reset.newHead, uint64(time.Now().Unix())) + if err == nil { + pool.priced.SetBaseFee(baseFeeEstimate) + } + } + + // Update all accounts to the latest known pending nonce + nonces := make(map[common.Address]uint64, len(pool.pending)) + for addr, list := range pool.pending { + highestPending := list.LastElement() + nonces[addr] = highestPending.Nonce() + 1 + } + pool.pendingNonces.setAll(nonces) + } + // Ensure pool.queue and pool.pending sizes stay within the configured limits. + pool.truncatePending() + pool.truncateQueue() + + dropBetweenReorgHistogram.Update(int64(pool.changesSinceReorg)) + pool.changesSinceReorg = 0 // Reset change counter + pool.mu.Unlock() + + if reset != nil && reset.newHead != nil { + pool.reorgFeed.Send(NewTxPoolReorgEvent{reset.newHead}) + } + + // Notify subsystems for newly added transactions + for _, tx := range promoted { + addr, _ := types.Sender(pool.signer, tx) + if _, ok := events[addr]; !ok { + events[addr] = newTxSortedMap() + } + events[addr].Put(tx) + } + if len(events) > 0 { + var txs []*types.Transaction + for _, set := range events { + txs = append(txs, set.Flatten()...) + } + pool.txFeed.Send(NewTxsEvent{txs}) + } +} + +// reset retrieves the current state of the blockchain and ensures the content +// of the transaction pool is valid with regard to the chain state. +func (pool *TxPool) reset(oldHead, newHead *types.Header) { + // If we're reorging an old state, reinject all dropped transactions + var reinject types.Transactions + + if oldHead != nil && oldHead.Hash() != newHead.ParentHash { + // If the reorg is too deep, avoid doing it (will happen during fast sync) + oldNum := oldHead.Number.Uint64() + newNum := newHead.Number.Uint64() + + if depth := uint64(math.Abs(float64(oldNum) - float64(newNum))); depth > 64 { + log.Debug("Skipping deep transaction reorg", "depth", depth) + } else { + // Reorg seems shallow enough to pull in all transactions into memory + var discarded, included types.Transactions + var ( + rem = pool.chain.GetBlock(oldHead.Hash(), oldHead.Number.Uint64()) + add = pool.chain.GetBlock(newHead.Hash(), newHead.Number.Uint64()) + ) + if rem == nil { + // This can happen if a setHead is performed, where we simply discard the old + // head from the chain. + // If that is the case, we don't have the lost transactions any more, and + // there's nothing to add + if newNum >= oldNum { + // If we reorged to a same or higher number, then it's not a case of setHead + log.Warn("Transaction pool reset with missing oldhead", + "old", oldHead.Hash(), "oldnum", oldNum, "new", newHead.Hash(), "newnum", newNum) + return + } + // If the reorg ended up on a lower number, it's indicative of setHead being the cause + log.Debug("Skipping transaction reset caused by setHead", + "old", oldHead.Hash(), "oldnum", oldNum, "new", newHead.Hash(), "newnum", newNum) + // We still need to update the current state s.th. the lost transactions can be readded by the user + } else { + for rem.NumberU64() > add.NumberU64() { + discarded = append(discarded, rem.Transactions()...) + if rem = pool.chain.GetBlock(rem.ParentHash(), rem.NumberU64()-1); rem == nil { + log.Error("Unrooted old chain seen by tx pool", "block", oldHead.Number, "hash", oldHead.Hash()) + return + } + } + for add.NumberU64() > rem.NumberU64() { + included = append(included, add.Transactions()...) + if add = pool.chain.GetBlock(add.ParentHash(), add.NumberU64()-1); add == nil { + log.Error("Unrooted new chain seen by tx pool", "block", newHead.Number, "hash", newHead.Hash()) + return + } + } + for rem.Hash() != add.Hash() { + discarded = append(discarded, rem.Transactions()...) + if rem = pool.chain.GetBlock(rem.ParentHash(), rem.NumberU64()-1); rem == nil { + log.Error("Unrooted old chain seen by tx pool", "block", oldHead.Number, "hash", oldHead.Hash()) + return + } + included = append(included, add.Transactions()...) + if add = pool.chain.GetBlock(add.ParentHash(), add.NumberU64()-1); add == nil { + log.Error("Unrooted new chain seen by tx pool", "block", newHead.Number, "hash", newHead.Hash()) + return + } + } + reinject = types.TxDifference(discarded, included) + } + } + } + // Initialize the internal state to the current head + if newHead == nil { + newHead = pool.chain.CurrentBlock().Header() // Special case during testing + } + statedb, err := pool.chain.StateAt(newHead.Root) + if err != nil { + log.Error("Failed to reset txpool state", "err", err, "root", newHead.Root) + return + } + pool.currentHead = newHead + pool.currentStateLock.Lock() + pool.currentState = statedb + pool.currentStateLock.Unlock() + pool.pendingNonces = newTxNoncer(statedb) + pool.currentMaxGas = newHead.GasLimit + + // Inject any transactions discarded due to reorgs + log.Debug("Reinjecting stale transactions", "count", len(reinject)) + pool.chain.SenderCacher().Recover(pool.signer, reinject) + pool.addTxsLocked(reinject, false) + + // Update all fork indicator by next pending block number. + next := new(big.Int).Add(newHead.Number, big.NewInt(1)) + pool.istanbul = pool.chainconfig.IsIstanbul(next) + + isSubnetEVM := pool.chainconfig.IsSubnetEVM(new(big.Int).SetUint64(newHead.Time)) + pool.eip2718 = isSubnetEVM + pool.eip1559 = isSubnetEVM +} + +// promoteExecutables moves transactions that have become processable from the +// future queue to the set of pending transactions. During this process, all +// invalidated transactions (low nonce, low balance) are deleted. +func (pool *TxPool) promoteExecutables(accounts []common.Address) []*types.Transaction { + pool.currentStateLock.Lock() + defer pool.currentStateLock.Unlock() + + // Track the promoted transactions to broadcast them at once + var promoted []*types.Transaction + + // Iterate over all accounts and promote any executable transactions + for _, addr := range accounts { + list := pool.queue[addr] + if list == nil { + continue // Just in case someone calls with a non existing account + } + // Drop all transactions that are deemed too old (low nonce) + forwards := list.Forward(pool.currentState.GetNonce(addr)) + for _, tx := range forwards { + hash := tx.Hash() + pool.all.Remove(hash) + } + log.Trace("Removed old queued transactions", "count", len(forwards)) + // Drop all transactions that are too costly (low balance or out of gas) + drops, _ := list.Filter(pool.currentState.GetBalance(addr), pool.currentMaxGas) + for _, tx := range drops { + hash := tx.Hash() + pool.all.Remove(hash) + } + log.Trace("Removed unpayable queued transactions", "count", len(drops)) + queuedNofundsMeter.Mark(int64(len(drops))) + + // Gather all executable transactions and promote them + readies := list.Ready(pool.pendingNonces.get(addr)) + for _, tx := range readies { + hash := tx.Hash() + if pool.promoteTx(addr, hash, tx) { + promoted = append(promoted, tx) + } + } + log.Trace("Promoted queued transactions", "count", len(promoted)) + queuedGauge.Dec(int64(len(readies))) + + // Drop all transactions over the allowed limit + var caps types.Transactions + if !pool.locals.contains(addr) { + caps = list.Cap(int(pool.config.AccountQueue)) + for _, tx := range caps { + hash := tx.Hash() + pool.all.Remove(hash) + log.Trace("Removed cap-exceeding queued transaction", "hash", hash) + } + queuedRateLimitMeter.Mark(int64(len(caps))) + } + // Mark all the items dropped as removed + pool.priced.Removed(len(forwards) + len(drops) + len(caps)) + queuedGauge.Dec(int64(len(forwards) + len(drops) + len(caps))) + if pool.locals.contains(addr) { + localGauge.Dec(int64(len(forwards) + len(drops) + len(caps))) + } + // Delete the entire queue entry if it became empty. + if list.Empty() { + delete(pool.queue, addr) + delete(pool.beats, addr) + } + } + return promoted +} + +// truncatePending removes transactions from the pending queue if the pool is above the +// pending limit. The algorithm tries to reduce transaction counts by an approximately +// equal number for all for accounts with many pending transactions. +func (pool *TxPool) truncatePending() { + pending := uint64(0) + for _, list := range pool.pending { + pending += uint64(list.Len()) + } + if pending <= pool.config.GlobalSlots { + return + } + + pendingBeforeCap := pending + // Assemble a spam order to penalize large transactors first + spammers := prque.New(nil) + for addr, list := range pool.pending { + // Only evict transactions from high rollers + if !pool.locals.contains(addr) && uint64(list.Len()) > pool.config.AccountSlots { + spammers.Push(addr, int64(list.Len())) + } + } + // Gradually drop transactions from offenders + offenders := []common.Address{} + for pending > pool.config.GlobalSlots && !spammers.Empty() { + // Retrieve the next offender if not local address + offender, _ := spammers.Pop() + offenders = append(offenders, offender.(common.Address)) + + // Equalize balances until all the same or below threshold + if len(offenders) > 1 { + // Calculate the equalization threshold for all current offenders + threshold := pool.pending[offender.(common.Address)].Len() + + // Iteratively reduce all offenders until below limit or threshold reached + for pending > pool.config.GlobalSlots && pool.pending[offenders[len(offenders)-2]].Len() > threshold { + for i := 0; i < len(offenders)-1; i++ { + list := pool.pending[offenders[i]] + + caps := list.Cap(list.Len() - 1) + for _, tx := range caps { + // Drop the transaction from the global pools too + hash := tx.Hash() + pool.all.Remove(hash) + + // Update the account nonce to the dropped transaction + pool.pendingNonces.setIfLower(offenders[i], tx.Nonce()) + log.Trace("Removed fairness-exceeding pending transaction", "hash", hash) + } + pool.priced.Removed(len(caps)) + pendingGauge.Dec(int64(len(caps))) + if pool.locals.contains(offenders[i]) { + localGauge.Dec(int64(len(caps))) + } + pending-- + } + } + } + } + + // If still above threshold, reduce to limit or min allowance + if pending > pool.config.GlobalSlots && len(offenders) > 0 { + for pending > pool.config.GlobalSlots && uint64(pool.pending[offenders[len(offenders)-1]].Len()) > pool.config.AccountSlots { + for _, addr := range offenders { + list := pool.pending[addr] + + caps := list.Cap(list.Len() - 1) + for _, tx := range caps { + // Drop the transaction from the global pools too + hash := tx.Hash() + pool.all.Remove(hash) + + // Update the account nonce to the dropped transaction + pool.pendingNonces.setIfLower(addr, tx.Nonce()) + log.Trace("Removed fairness-exceeding pending transaction", "hash", hash) + } + pool.priced.Removed(len(caps)) + pendingGauge.Dec(int64(len(caps))) + if pool.locals.contains(addr) { + localGauge.Dec(int64(len(caps))) + } + pending-- + } + } + } + pendingRateLimitMeter.Mark(int64(pendingBeforeCap - pending)) +} + +// truncateQueue drops the oldes transactions in the queue if the pool is above the global queue limit. +func (pool *TxPool) truncateQueue() { + queued := uint64(0) + for _, list := range pool.queue { + queued += uint64(list.Len()) + } + if queued <= pool.config.GlobalQueue { + return + } + + // Sort all accounts with queued transactions by heartbeat + addresses := make(addressesByHeartbeat, 0, len(pool.queue)) + for addr := range pool.queue { + if !pool.locals.contains(addr) { // don't drop locals + addresses = append(addresses, addressByHeartbeat{addr, pool.beats[addr]}) + } + } + sort.Sort(addresses) + + // Drop transactions until the total is below the limit or only locals remain + for drop := queued - pool.config.GlobalQueue; drop > 0 && len(addresses) > 0; { + addr := addresses[len(addresses)-1] + list := pool.queue[addr.address] + + addresses = addresses[:len(addresses)-1] + + // Drop all transactions if they are less than the overflow + if size := uint64(list.Len()); size <= drop { + for _, tx := range list.Flatten() { + pool.removeTx(tx.Hash(), true) + } + drop -= size + queuedRateLimitMeter.Mark(int64(size)) + continue + } + // Otherwise drop only last few transactions + txs := list.Flatten() + for i := len(txs) - 1; i >= 0 && drop > 0; i-- { + pool.removeTx(txs[i].Hash(), true) + drop-- + queuedRateLimitMeter.Mark(1) + } + } +} + +// demoteUnexecutables removes invalid and processed transactions from the pools +// executable/pending queue and any subsequent transactions that become unexecutable +// are moved back into the future queue. +// +// Note: transactions are not marked as removed in the priced list because re-heaping +// is always explicitly triggered by SetBaseFee and it would be unnecessary and wasteful +// to trigger a re-heap is this function +func (pool *TxPool) demoteUnexecutables() { + pool.currentStateLock.Lock() + defer pool.currentStateLock.Unlock() + + // Iterate over all accounts and demote any non-executable transactions + for addr, list := range pool.pending { + nonce := pool.currentState.GetNonce(addr) + + // Drop all transactions that are deemed too old (low nonce) + olds := list.Forward(nonce) + for _, tx := range olds { + hash := tx.Hash() + pool.all.Remove(hash) + log.Trace("Removed old pending transaction", "hash", hash) + } + // Drop all transactions that are too costly (low balance or out of gas), and queue any invalids back for later + drops, invalids := list.Filter(pool.currentState.GetBalance(addr), pool.currentMaxGas) + for _, tx := range drops { + hash := tx.Hash() + log.Trace("Removed unpayable pending transaction", "hash", hash) + pool.all.Remove(hash) + } + pendingNofundsMeter.Mark(int64(len(drops))) + + for _, tx := range invalids { + hash := tx.Hash() + log.Trace("Demoting pending transaction", "hash", hash) + + // Internal shuffle shouldn't touch the lookup set. + pool.enqueueTx(hash, tx, false, false) + } + pendingGauge.Dec(int64(len(olds) + len(drops) + len(invalids))) + if pool.locals.contains(addr) { + localGauge.Dec(int64(len(olds) + len(drops) + len(invalids))) + } + // If there's a gap in front, alert (should never happen) and postpone all transactions + if list.Len() > 0 && list.txs.Get(nonce) == nil { + gapped := list.Cap(0) + for _, tx := range gapped { + hash := tx.Hash() + log.Error("Demoting invalidated transaction", "hash", hash) + + // Internal shuffle shouldn't touch the lookup set. + pool.enqueueTx(hash, tx, false, false) + } + // This might happen in a reorg, so log it to the metering + pendingGauge.Dec(int64(len(gapped))) + } + // Delete the entire pending entry if it became empty. + if list.Empty() { + delete(pool.pending, addr) + } + } +} + +func (pool *TxPool) startPeriodicFeeUpdate() { + if pool.chainconfig.SubnetEVMTimestamp == nil { + return + } + + // Call updateBaseFee here to ensure that there is not a [baseFeeUpdateInterval] delay + // when starting up in Subnet EVM before the base fee is updated. + if time.Now().After(time.Unix(pool.chainconfig.SubnetEVMTimestamp.Int64(), 0)) { + pool.updateBaseFee() + } + + pool.wg.Add(1) + go pool.periodicBaseFeeUpdate() +} + +func (pool *TxPool) periodicBaseFeeUpdate() { + defer pool.wg.Done() + + // Sleep until its time to start the periodic base fee update or the tx pool is shutting down + select { + case <-time.After(time.Until(time.Unix(pool.chainconfig.SubnetEVMTimestamp.Int64(), 0))): + case <-pool.generalShutdownChan: + return // Return early if shutting down + } + + // Update the base fee every [baseFeeUpdateInterval] + // and shutdown when [generalShutdownChan] is closed by Stop() + for { + select { + case <-time.After(baseFeeUpdateInterval): + pool.updateBaseFee() + case <-pool.generalShutdownChan: + return + } + } +} + +func (pool *TxPool) updateBaseFee() { + pool.mu.Lock() + defer pool.mu.Unlock() + + _, baseFeeEstimate, err := dummy.CalcBaseFee(pool.chainconfig, pool.currentHead, uint64(time.Now().Unix())) + if err == nil { + pool.priced.SetBaseFee(baseFeeEstimate) + } else { + log.Error("failed to update base fee", "currentHead", pool.currentHead.Hash(), "err", err) + } +} + +// addressByHeartbeat is an account address tagged with its last activity timestamp. +type addressByHeartbeat struct { + address common.Address + heartbeat time.Time +} + +type addressesByHeartbeat []addressByHeartbeat + +func (a addressesByHeartbeat) Len() int { return len(a) } +func (a addressesByHeartbeat) Less(i, j int) bool { return a[i].heartbeat.Before(a[j].heartbeat) } +func (a addressesByHeartbeat) Swap(i, j int) { a[i], a[j] = a[j], a[i] } + +// accountSet is simply a set of addresses to check for existence, and a signer +// capable of deriving addresses from transactions. +type accountSet struct { + accounts map[common.Address]struct{} + signer types.Signer + cache *[]common.Address +} + +// newAccountSet creates a new address set with an associated signer for sender +// derivations. +func newAccountSet(signer types.Signer, addrs ...common.Address) *accountSet { + as := &accountSet{ + accounts: make(map[common.Address]struct{}), + signer: signer, + } + for _, addr := range addrs { + as.add(addr) + } + return as +} + +// contains checks if a given address is contained within the set. +func (as *accountSet) contains(addr common.Address) bool { + _, exist := as.accounts[addr] + return exist +} + +func (as *accountSet) empty() bool { + return len(as.accounts) == 0 +} + +// containsTx checks if the sender of a given tx is within the set. If the sender +// cannot be derived, this method returns false. +func (as *accountSet) containsTx(tx *types.Transaction) bool { + if addr, err := types.Sender(as.signer, tx); err == nil { + return as.contains(addr) + } + return false +} + +// add inserts a new address into the set to track. +func (as *accountSet) add(addr common.Address) { + as.accounts[addr] = struct{}{} + as.cache = nil +} + +// addTx adds the sender of tx into the set. +func (as *accountSet) addTx(tx *types.Transaction) { + if addr, err := types.Sender(as.signer, tx); err == nil { + as.add(addr) + } +} + +// flatten returns the list of addresses within this set, also caching it for later +// reuse. The returned slice should not be changed! +func (as *accountSet) flatten() []common.Address { + if as.cache == nil { + accounts := make([]common.Address, 0, len(as.accounts)) + for account := range as.accounts { + accounts = append(accounts, account) + } + as.cache = &accounts + } + return *as.cache +} + +// merge adds all addresses from the 'other' set into 'as'. +func (as *accountSet) merge(other *accountSet) { + for addr := range other.accounts { + as.accounts[addr] = struct{}{} + } + as.cache = nil +} + +// txLookup is used internally by TxPool to track transactions while allowing +// lookup without mutex contention. +// +// Note, although this type is properly protected against concurrent access, it +// is **not** a type that should ever be mutated or even exposed outside of the +// transaction pool, since its internal state is tightly coupled with the pools +// internal mechanisms. The sole purpose of the type is to permit out-of-bound +// peeking into the pool in TxPool.Get without having to acquire the widely scoped +// TxPool.mu mutex. +// +// This lookup set combines the notion of "local transactions", which is useful +// to build upper-level structure. +type txLookup struct { + slots int + lock sync.RWMutex + locals map[common.Hash]*types.Transaction + remotes map[common.Hash]*types.Transaction +} + +// newTxLookup returns a new txLookup structure. +func newTxLookup() *txLookup { + return &txLookup{ + locals: make(map[common.Hash]*types.Transaction), + remotes: make(map[common.Hash]*types.Transaction), + } +} + +// Range calls f on each key and value present in the map. The callback passed +// should return the indicator whether the iteration needs to be continued. +// Callers need to specify which set (or both) to be iterated. +func (t *txLookup) Range(f func(hash common.Hash, tx *types.Transaction, local bool) bool, local bool, remote bool) { + t.lock.RLock() + defer t.lock.RUnlock() + + if local { + for key, value := range t.locals { + if !f(key, value, true) { + return + } + } + } + if remote { + for key, value := range t.remotes { + if !f(key, value, false) { + return + } + } + } +} + +// Get returns a transaction if it exists in the lookup, or nil if not found. +func (t *txLookup) Get(hash common.Hash) *types.Transaction { + t.lock.RLock() + defer t.lock.RUnlock() + + if tx := t.locals[hash]; tx != nil { + return tx + } + return t.remotes[hash] +} + +// GetLocal returns a transaction if it exists in the lookup, or nil if not found. +func (t *txLookup) GetLocal(hash common.Hash) *types.Transaction { + t.lock.RLock() + defer t.lock.RUnlock() + + return t.locals[hash] +} + +// GetRemote returns a transaction if it exists in the lookup, or nil if not found. +func (t *txLookup) GetRemote(hash common.Hash) *types.Transaction { + t.lock.RLock() + defer t.lock.RUnlock() + + return t.remotes[hash] +} + +// Count returns the current number of transactions in the lookup. +func (t *txLookup) Count() int { + t.lock.RLock() + defer t.lock.RUnlock() + + return len(t.locals) + len(t.remotes) +} + +// LocalCount returns the current number of local transactions in the lookup. +func (t *txLookup) LocalCount() int { + t.lock.RLock() + defer t.lock.RUnlock() + + return len(t.locals) +} + +// RemoteCount returns the current number of remote transactions in the lookup. +func (t *txLookup) RemoteCount() int { + t.lock.RLock() + defer t.lock.RUnlock() + + return len(t.remotes) +} + +// Slots returns the current number of slots used in the lookup. +func (t *txLookup) Slots() int { + t.lock.RLock() + defer t.lock.RUnlock() + + return t.slots +} + +// Add adds a transaction to the lookup. +func (t *txLookup) Add(tx *types.Transaction, local bool) { + t.lock.Lock() + defer t.lock.Unlock() + + t.slots += numSlots(tx) + slotsGauge.Update(int64(t.slots)) + + if local { + t.locals[tx.Hash()] = tx + } else { + t.remotes[tx.Hash()] = tx + } +} + +// Remove removes a transaction from the lookup. +func (t *txLookup) Remove(hash common.Hash) { + t.lock.Lock() + defer t.lock.Unlock() + + tx, ok := t.locals[hash] + if !ok { + tx, ok = t.remotes[hash] + } + if !ok { + log.Error("No transaction found to be deleted", "hash", hash) + return + } + t.slots -= numSlots(tx) + slotsGauge.Update(int64(t.slots)) + + delete(t.locals, hash) + delete(t.remotes, hash) +} + +// RemoteToLocals migrates the transactions belongs to the given locals to locals +// set. The assumption is held the locals set is thread-safe to be used. +func (t *txLookup) RemoteToLocals(locals *accountSet) int { + t.lock.Lock() + defer t.lock.Unlock() + + var migrated int + for hash, tx := range t.remotes { + if locals.containsTx(tx) { + t.locals[hash] = tx + delete(t.remotes, hash) + migrated += 1 + } + } + return migrated +} + +// RemotesBelowTip finds all remote transactions below the given tip threshold. +func (t *txLookup) RemotesBelowTip(threshold *big.Int) types.Transactions { + found := make(types.Transactions, 0, 128) + t.Range(func(hash common.Hash, tx *types.Transaction, local bool) bool { + if tx.GasTipCapIntCmp(threshold) < 0 { + found = append(found, tx) + } + return true + }, false, true) // Only iterate remotes + return found +} + +// numSlots calculates the number of slots needed for a single transaction. +func numSlots(tx *types.Transaction) int { + return int((tx.Size() + txSlotSize - 1) / txSlotSize) +} diff --git a/core/tx_pool_test.go b/core/tx_pool_test.go new file mode 100644 index 0000000000..345e49072d --- /dev/null +++ b/core/tx_pool_test.go @@ -0,0 +1,2598 @@ +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "crypto/ecdsa" + "errors" + "fmt" + "io/ioutil" + "math/big" + "math/rand" + "os" + "strings" + "sync" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/event" +) + +var ( + // testTxPoolConfig is a transaction pool configuration without stateful disk + // sideeffects used during testing. + testTxPoolConfig TxPoolConfig + + // eip1559Config is a chain config with EIP-1559 enabled at block 0. + eip1559Config *params.ChainConfig +) + +func init() { + testTxPoolConfig = DefaultTxPoolConfig + testTxPoolConfig.Journal = "" + + cpy := *params.TestChainConfig + eip1559Config = &cpy + eip1559Config.SubnetEVMTimestamp = common.Big0 +} + +type testBlockChain struct { + statedb *state.StateDB + gasLimit uint64 + chainHeadFeed *event.Feed + lock sync.Mutex +} + +func newTestBlockchain(statedb *state.StateDB, gasLimit uint64, chainHeadFeed *event.Feed) *testBlockChain { + return &testBlockChain{ + statedb: statedb, + gasLimit: gasLimit, + chainHeadFeed: chainHeadFeed, + } +} + +func (bc *testBlockChain) reset(statedb *state.StateDB, gasLimit uint64, chainHeadFeed *event.Feed) { + bc.lock.Lock() + defer bc.lock.Unlock() + + bc.statedb = statedb + bc.gasLimit = gasLimit + bc.chainHeadFeed = chainHeadFeed +} + +func (bc *testBlockChain) CurrentBlock() *types.Block { + bc.lock.Lock() + defer bc.lock.Unlock() + + return types.NewBlock(&types.Header{ + GasLimit: bc.gasLimit, + }, nil, nil, nil, trie.NewStackTrie(nil)) +} + +func (bc *testBlockChain) GetBlock(hash common.Hash, number uint64) *types.Block { + return bc.CurrentBlock() +} + +func (bc *testBlockChain) StateAt(common.Hash) (*state.StateDB, error) { + bc.lock.Lock() + defer bc.lock.Unlock() + + return bc.statedb, nil +} + +func (bc *testBlockChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription { + bc.lock.Lock() + defer bc.lock.Unlock() + + return bc.chainHeadFeed.Subscribe(ch) +} + +func (bc *testBlockChain) SenderCacher() *TxSenderCacher { + return newTxSenderCacher(1) +} + +func transaction(nonce uint64, gaslimit uint64, key *ecdsa.PrivateKey) *types.Transaction { + return pricedTransaction(nonce, gaslimit, big.NewInt(1), key) +} + +func pricedTransaction(nonce uint64, gaslimit uint64, gasprice *big.Int, key *ecdsa.PrivateKey) *types.Transaction { + tx, _ := types.SignTx(types.NewTransaction(nonce, common.Address{}, big.NewInt(100), gaslimit, gasprice, nil), types.HomesteadSigner{}, key) + return tx +} + +func pricedDataTransaction(nonce uint64, gaslimit uint64, gasprice *big.Int, key *ecdsa.PrivateKey, bytes uint64) *types.Transaction { + data := make([]byte, bytes) + rand.Read(data) + + tx, _ := types.SignTx(types.NewTransaction(nonce, common.Address{}, big.NewInt(0), gaslimit, gasprice, data), types.HomesteadSigner{}, key) + return tx +} + +func dynamicFeeTx(nonce uint64, gaslimit uint64, gasFee *big.Int, tip *big.Int, key *ecdsa.PrivateKey) *types.Transaction { + tx, _ := types.SignNewTx(key, types.LatestSignerForChainID(params.TestChainConfig.ChainID), &types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: nonce, + GasTipCap: tip, + GasFeeCap: gasFee, + Gas: gaslimit, + To: &common.Address{}, + Value: big.NewInt(100), + Data: nil, + AccessList: nil, + }) + return tx +} + +func setupTxPool() (*TxPool, *ecdsa.PrivateKey) { + return setupTxPoolWithConfig(params.TestChainConfig) +} + +func setupTxPoolWithConfig(config *params.ChainConfig) (*TxPool, *ecdsa.PrivateKey) { + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 10000000, new(event.Feed)) + + key, _ := crypto.GenerateKey() + pool := NewTxPool(testTxPoolConfig, config, blockchain) + + // wait for the pool to initialize + <-pool.initDoneCh + return pool, key +} + +// validateTxPoolInternals checks various consistency invariants within the pool. +func validateTxPoolInternals(pool *TxPool) error { + pool.mu.RLock() + defer pool.mu.RUnlock() + + // Ensure the total transaction set is consistent with pending + queued + pending, queued := pool.stats() + if total := pool.all.Count(); total != pending+queued { + return fmt.Errorf("total transaction count %d != %d pending + %d queued", total, pending, queued) + } + pool.priced.Reheap() + priced, remote := pool.priced.urgent.Len()+pool.priced.floating.Len(), pool.all.RemoteCount() + if priced != remote { + return fmt.Errorf("total priced transaction count %d != %d", priced, remote) + } + // Ensure the next nonce to assign is the correct one + for addr, txs := range pool.pending { + // Find the last transaction + var last uint64 + for nonce := range txs.txs.items { + if last < nonce { + last = nonce + } + } + if nonce := pool.pendingNonces.get(addr); nonce != last+1 { + return fmt.Errorf("pending nonce mismatch: have %v, want %v", nonce, last+1) + } + } + return nil +} + +// validateEvents checks that the correct number of transaction addition events +// were fired on the pool's event feed. +func validateEvents(events chan NewTxsEvent, count int) error { + var received []*types.Transaction + + for len(received) < count { + select { + case ev := <-events: + received = append(received, ev.Txs...) + case <-time.After(10 * time.Second): + return fmt.Errorf("event #%d not fired", len(received)) + } + } + if len(received) > count { + return fmt.Errorf("more than %d events fired: %v", count, received[count:]) + } + select { + case ev := <-events: + return fmt.Errorf("more than %d events fired: %v", count, ev.Txs) + + case <-time.After(50 * time.Millisecond): + // This branch should be "default", but it's a data race between goroutines, + // reading the event channel and pushing into it, so better wait a bit ensuring + // really nothing gets injected. + } + return nil +} + +func deriveSender(tx *types.Transaction) (common.Address, error) { + return types.Sender(types.HomesteadSigner{}, tx) +} + +type testChain struct { + *testBlockChain + address common.Address + trigger *bool +} + +// testChain.State() is used multiple times to reset the pending state. +// when simulate is true it will create a state that indicates +// that tx0 and tx1 are included in the chain. +func (c *testChain) State() (*state.StateDB, error) { + // delay "state change" by one. The tx pool fetches the + // state multiple times and by delaying it a bit we simulate + // a state change between those fetches. + stdb := c.statedb + if *c.trigger { + c.statedb, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + // simulate that the new head block included tx0 and tx1 + c.statedb.SetNonce(c.address, 2) + c.statedb.SetBalance(c.address, new(big.Int).SetUint64(params.Ether)) + *c.trigger = false + } + return stdb, nil +} + +// This test simulates a scenario where a new block is imported during a +// state reset and tests whether the pending state is in sync with the +// block head event that initiated the resetState(). +func TestStateChangeDuringTransactionPoolReset(t *testing.T) { + t.Parallel() + + var ( + key, _ = crypto.GenerateKey() + address = crypto.PubkeyToAddress(key.PublicKey) + statedb, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + trigger = false + ) + + // setup pool with 2 transaction in it + statedb.SetBalance(address, new(big.Int).SetUint64(params.Ether)) + blockchain := &testChain{newTestBlockchain(statedb, 1000000000, new(event.Feed)), address, &trigger} + + tx0 := transaction(0, 100000, key) + tx1 := transaction(1, 100000, key) + + pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain) + defer pool.Stop() + + nonce := pool.Nonce(address) + if nonce != 0 { + t.Fatalf("Invalid nonce, want 0, got %d", nonce) + } + + pool.AddRemotesSync([]*types.Transaction{tx0, tx1}) + + nonce = pool.Nonce(address) + if nonce != 2 { + t.Fatalf("Invalid nonce, want 2, got %d", nonce) + } + + // trigger state change in the background + trigger = true + <-pool.requestReset(nil, nil) + + nonce = pool.Nonce(address) + if nonce != 2 { + t.Fatalf("Invalid nonce, want 2, got %d", nonce) + } +} + +func testAddBalance(pool *TxPool, addr common.Address, amount *big.Int) { + pool.mu.Lock() + pool.currentState.AddBalance(addr, amount) + pool.mu.Unlock() +} + +func testSetNonce(pool *TxPool, addr common.Address, nonce uint64) { + pool.mu.Lock() + pool.currentState.SetNonce(addr, nonce) + pool.mu.Unlock() +} + +func TestInvalidTransactions(t *testing.T) { + t.Parallel() + + pool, key := setupTxPool() + defer pool.Stop() + + tx := transaction(0, 100, key) + from, _ := deriveSender(tx) + + testAddBalance(pool, from, big.NewInt(1)) + if err := pool.AddRemote(tx); !errors.Is(err, ErrInsufficientFunds) { + t.Error("expected", ErrInsufficientFunds) + } + + balance := new(big.Int).Add(tx.Value(), new(big.Int).Mul(new(big.Int).SetUint64(tx.Gas()), tx.GasPrice())) + testAddBalance(pool, from, balance) + if err := pool.AddRemote(tx); !errors.Is(err, ErrIntrinsicGas) { + t.Error("expected", ErrIntrinsicGas, "got", err) + } + + testSetNonce(pool, from, 1) + testAddBalance(pool, from, big.NewInt(0xffffffffffffff)) + tx = transaction(0, 100000, key) + if err := pool.AddRemote(tx); !errors.Is(err, ErrNonceTooLow) { + t.Error("expected", ErrNonceTooLow) + } + + tx = transaction(1, 100000, key) + pool.gasPrice = big.NewInt(1000) + if err := pool.AddRemote(tx); !strings.Contains(err.Error(), ErrUnderpriced.Error()) { + t.Error("expected error to contain", ErrUnderpriced, "got", err) + } + if err := pool.AddLocal(tx); err != nil { + t.Error("expected", nil, "got", err) + } +} + +func TestTransactionQueue(t *testing.T) { + t.Parallel() + + pool, key := setupTxPool() + defer pool.Stop() + + tx := transaction(0, 100, key) + from, _ := deriveSender(tx) + testAddBalance(pool, from, big.NewInt(1000)) + <-pool.requestReset(nil, nil) + + pool.enqueueTx(tx.Hash(), tx, false, true) + <-pool.requestPromoteExecutables(newAccountSet(pool.signer, from)) + if len(pool.pending) != 1 { + t.Error("expected valid txs to be 1 is", len(pool.pending)) + } + + tx = transaction(1, 100, key) + from, _ = deriveSender(tx) + testSetNonce(pool, from, 2) + pool.enqueueTx(tx.Hash(), tx, false, true) + + <-pool.requestPromoteExecutables(newAccountSet(pool.signer, from)) + if _, ok := pool.pending[from].txs.items[tx.Nonce()]; ok { + t.Error("expected transaction to be in tx pool") + } + if len(pool.queue) > 0 { + t.Error("expected transaction queue to be empty. is", len(pool.queue)) + } +} + +func TestTransactionQueue2(t *testing.T) { + t.Parallel() + + pool, key := setupTxPool() + defer pool.Stop() + + tx1 := transaction(0, 100, key) + tx2 := transaction(10, 100, key) + tx3 := transaction(11, 100, key) + from, _ := deriveSender(tx1) + testAddBalance(pool, from, big.NewInt(1000)) + pool.reset(nil, nil) + + pool.enqueueTx(tx1.Hash(), tx1, false, true) + pool.enqueueTx(tx2.Hash(), tx2, false, true) + pool.enqueueTx(tx3.Hash(), tx3, false, true) + + pool.promoteExecutables([]common.Address{from}) + if len(pool.pending) != 1 { + t.Error("expected pending length to be 1, got", len(pool.pending)) + } + if pool.queue[from].Len() != 2 { + t.Error("expected len(queue) == 2, got", pool.queue[from].Len()) + } +} + +func TestTransactionNegativeValue(t *testing.T) { + t.Parallel() + + pool, key := setupTxPool() + defer pool.Stop() + + tx, _ := types.SignTx(types.NewTransaction(0, common.Address{}, big.NewInt(-1), 100, big.NewInt(1), nil), types.HomesteadSigner{}, key) + from, _ := deriveSender(tx) + testAddBalance(pool, from, big.NewInt(1)) + if err := pool.AddRemote(tx); err != ErrNegativeValue { + t.Error("expected", ErrNegativeValue, "got", err) + } +} + +func TestTransactionTipAboveFeeCap(t *testing.T) { + t.Parallel() + + pool, key := setupTxPoolWithConfig(eip1559Config) + defer pool.Stop() + + tx := dynamicFeeTx(0, 100, big.NewInt(1), big.NewInt(2), key) + + if err := pool.AddRemote(tx); err != ErrTipAboveFeeCap { + t.Error("expected", ErrTipAboveFeeCap, "got", err) + } +} + +func TestTransactionVeryHighValues(t *testing.T) { + t.Parallel() + + pool, key := setupTxPoolWithConfig(eip1559Config) + defer pool.Stop() + + veryBigNumber := big.NewInt(1) + veryBigNumber.Lsh(veryBigNumber, 300) + + tx := dynamicFeeTx(0, 100, big.NewInt(1), veryBigNumber, key) + if err := pool.AddRemote(tx); err != ErrTipVeryHigh { + t.Error("expected", ErrTipVeryHigh, "got", err) + } + + tx2 := dynamicFeeTx(0, 100, veryBigNumber, big.NewInt(1), key) + if err := pool.AddRemote(tx2); err != ErrFeeCapVeryHigh { + t.Error("expected", ErrFeeCapVeryHigh, "got", err) + } +} + +func TestTransactionChainFork(t *testing.T) { + t.Parallel() + + pool, key := setupTxPool() + defer pool.Stop() + + addr := crypto.PubkeyToAddress(key.PublicKey) + resetState := func() { + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + statedb.AddBalance(addr, big.NewInt(100000000000000)) + + pool.chain.(*testBlockChain).reset(statedb, 1000000, new(event.Feed)) + <-pool.requestReset(nil, nil) + } + resetState() + + tx := transaction(0, 100000, key) + if _, err := pool.add(tx, false); err != nil { + t.Error("didn't expect error", err) + } + pool.removeTx(tx.Hash(), true) + + // reset the pool's internal state + resetState() + if _, err := pool.add(tx, false); err != nil { + t.Error("didn't expect error", err) + } +} + +func TestTransactionDoubleNonce(t *testing.T) { + t.Parallel() + + pool, key := setupTxPool() + defer pool.Stop() + + addr := crypto.PubkeyToAddress(key.PublicKey) + resetState := func() { + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + statedb.AddBalance(addr, big.NewInt(100000000000000)) + + pool.chain.(*testBlockChain).reset(statedb, 1000000, new(event.Feed)) + <-pool.requestReset(nil, nil) + } + resetState() + + signer := types.HomesteadSigner{} + tx1, _ := types.SignTx(types.NewTransaction(0, common.Address{}, big.NewInt(100), 100000, big.NewInt(1), nil), signer, key) + tx2, _ := types.SignTx(types.NewTransaction(0, common.Address{}, big.NewInt(100), 1000000, big.NewInt(2), nil), signer, key) + tx3, _ := types.SignTx(types.NewTransaction(0, common.Address{}, big.NewInt(100), 1000000, big.NewInt(1), nil), signer, key) + + // Add the first two transaction, ensure higher priced stays only + if replace, err := pool.add(tx1, false); err != nil || replace { + t.Errorf("first transaction insert failed (%v) or reported replacement (%v)", err, replace) + } + if replace, err := pool.add(tx2, false); err != nil || !replace { + t.Errorf("second transaction insert failed (%v) or not reported replacement (%v)", err, replace) + } + <-pool.requestPromoteExecutables(newAccountSet(signer, addr)) + if pool.pending[addr].Len() != 1 { + t.Error("expected 1 pending transactions, got", pool.pending[addr].Len()) + } + if tx := pool.pending[addr].txs.items[0]; tx.Hash() != tx2.Hash() { + t.Errorf("transaction mismatch: have %x, want %x", tx.Hash(), tx2.Hash()) + } + + // Add the third transaction and ensure it's not saved (smaller price) + pool.add(tx3, false) + <-pool.requestPromoteExecutables(newAccountSet(signer, addr)) + if pool.pending[addr].Len() != 1 { + t.Error("expected 1 pending transactions, got", pool.pending[addr].Len()) + } + if tx := pool.pending[addr].txs.items[0]; tx.Hash() != tx2.Hash() { + t.Errorf("transaction mismatch: have %x, want %x", tx.Hash(), tx2.Hash()) + } + // Ensure the total transaction count is correct + if pool.all.Count() != 1 { + t.Error("expected 1 total transactions, got", pool.all.Count()) + } +} + +func TestTransactionMissingNonce(t *testing.T) { + t.Parallel() + + pool, key := setupTxPool() + defer pool.Stop() + + addr := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, addr, big.NewInt(100000000000000)) + tx := transaction(1, 100000, key) + if _, err := pool.add(tx, false); err != nil { + t.Error("didn't expect error", err) + } + if len(pool.pending) != 0 { + t.Error("expected 0 pending transactions, got", len(pool.pending)) + } + if pool.queue[addr].Len() != 1 { + t.Error("expected 1 queued transaction, got", pool.queue[addr].Len()) + } + if pool.all.Count() != 1 { + t.Error("expected 1 total transactions, got", pool.all.Count()) + } +} + +func TestTransactionNonceRecovery(t *testing.T) { + t.Parallel() + + const n = 10 + pool, key := setupTxPool() + defer pool.Stop() + + addr := crypto.PubkeyToAddress(key.PublicKey) + testSetNonce(pool, addr, n) + testAddBalance(pool, addr, big.NewInt(100000000000000)) + <-pool.requestReset(nil, nil) + + tx := transaction(n, 100000, key) + if err := pool.AddRemote(tx); err != nil { + t.Error(err) + } + // simulate some weird re-order of transactions and missing nonce(s) + testSetNonce(pool, addr, n-1) + <-pool.requestReset(nil, nil) + if fn := pool.Nonce(addr); fn != n-1 { + t.Errorf("expected nonce to be %d, got %d", n-1, fn) + } +} + +// Tests that if an account runs out of funds, any pending and queued transactions +// are dropped. +func TestTransactionDropping(t *testing.T) { + t.Parallel() + + // Create a test account and fund it + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000)) + + // Add some pending and some queued transactions + var ( + tx0 = transaction(0, 100, key) + tx1 = transaction(1, 200, key) + tx2 = transaction(2, 300, key) + tx10 = transaction(10, 100, key) + tx11 = transaction(11, 200, key) + tx12 = transaction(12, 300, key) + ) + pool.all.Add(tx0, false) + pool.priced.Put(tx0, false) + pool.promoteTx(account, tx0.Hash(), tx0) + + pool.all.Add(tx1, false) + pool.priced.Put(tx1, false) + pool.promoteTx(account, tx1.Hash(), tx1) + + pool.all.Add(tx2, false) + pool.priced.Put(tx2, false) + pool.promoteTx(account, tx2.Hash(), tx2) + + pool.enqueueTx(tx10.Hash(), tx10, false, true) + pool.enqueueTx(tx11.Hash(), tx11, false, true) + pool.enqueueTx(tx12.Hash(), tx12, false, true) + + // Check that pre and post validations leave the pool as is + if pool.pending[account].Len() != 3 { + t.Errorf("pending transaction mismatch: have %d, want %d", pool.pending[account].Len(), 3) + } + if pool.queue[account].Len() != 3 { + t.Errorf("queued transaction mismatch: have %d, want %d", pool.queue[account].Len(), 3) + } + if pool.all.Count() != 6 { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), 6) + } + <-pool.requestReset(nil, nil) + if pool.pending[account].Len() != 3 { + t.Errorf("pending transaction mismatch: have %d, want %d", pool.pending[account].Len(), 3) + } + if pool.queue[account].Len() != 3 { + t.Errorf("queued transaction mismatch: have %d, want %d", pool.queue[account].Len(), 3) + } + if pool.all.Count() != 6 { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), 6) + } + // Reduce the balance of the account, and check that invalidated transactions are dropped + testAddBalance(pool, account, big.NewInt(-650)) + <-pool.requestReset(nil, nil) + + if _, ok := pool.pending[account].txs.items[tx0.Nonce()]; !ok { + t.Errorf("funded pending transaction missing: %v", tx0) + } + if _, ok := pool.pending[account].txs.items[tx1.Nonce()]; !ok { + t.Errorf("funded pending transaction missing: %v", tx0) + } + if _, ok := pool.pending[account].txs.items[tx2.Nonce()]; ok { + t.Errorf("out-of-fund pending transaction present: %v", tx1) + } + if _, ok := pool.queue[account].txs.items[tx10.Nonce()]; !ok { + t.Errorf("funded queued transaction missing: %v", tx10) + } + if _, ok := pool.queue[account].txs.items[tx11.Nonce()]; !ok { + t.Errorf("funded queued transaction missing: %v", tx10) + } + if _, ok := pool.queue[account].txs.items[tx12.Nonce()]; ok { + t.Errorf("out-of-fund queued transaction present: %v", tx11) + } + if pool.all.Count() != 4 { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), 4) + } + // Reduce the block gas limit, check that invalidated transactions are dropped + tbc := pool.chain.(*testBlockChain) + tbc.reset(tbc.statedb, 100, tbc.chainHeadFeed) + <-pool.requestReset(nil, nil) + + if _, ok := pool.pending[account].txs.items[tx0.Nonce()]; !ok { + t.Errorf("funded pending transaction missing: %v", tx0) + } + if _, ok := pool.pending[account].txs.items[tx1.Nonce()]; ok { + t.Errorf("over-gased pending transaction present: %v", tx1) + } + if _, ok := pool.queue[account].txs.items[tx10.Nonce()]; !ok { + t.Errorf("funded queued transaction missing: %v", tx10) + } + if _, ok := pool.queue[account].txs.items[tx11.Nonce()]; ok { + t.Errorf("over-gased queued transaction present: %v", tx11) + } + if pool.all.Count() != 2 { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), 2) + } +} + +// Tests that if a transaction is dropped from the current pending pool (e.g. out +// of fund), all consecutive (still valid, but not executable) transactions are +// postponed back into the future queue to prevent broadcasting them. +func TestTransactionPostponing(t *testing.T) { + t.Parallel() + + // Create the pool to test the postponing with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create two test accounts to produce different gap profiles with + keys := make([]*ecdsa.PrivateKey, 2) + accs := make([]common.Address, len(keys)) + + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + accs[i] = crypto.PubkeyToAddress(keys[i].PublicKey) + + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(50100)) + } + // Add a batch consecutive pending transactions for validation + txs := []*types.Transaction{} + for i, key := range keys { + for j := 0; j < 100; j++ { + var tx *types.Transaction + if (i+j)%2 == 0 { + tx = transaction(uint64(j), 25000, key) + } else { + tx = transaction(uint64(j), 50000, key) + } + txs = append(txs, tx) + } + } + for i, err := range pool.AddRemotesSync(txs) { + if err != nil { + t.Fatalf("tx %d: failed to add transactions: %v", i, err) + } + } + // Check that pre and post validations leave the pool as is + if pending := pool.pending[accs[0]].Len() + pool.pending[accs[1]].Len(); pending != len(txs) { + t.Errorf("pending transaction mismatch: have %d, want %d", pending, len(txs)) + } + if len(pool.queue) != 0 { + t.Errorf("queued accounts mismatch: have %d, want %d", len(pool.queue), 0) + } + if pool.all.Count() != len(txs) { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), len(txs)) + } + <-pool.requestReset(nil, nil) + if pending := pool.pending[accs[0]].Len() + pool.pending[accs[1]].Len(); pending != len(txs) { + t.Errorf("pending transaction mismatch: have %d, want %d", pending, len(txs)) + } + if len(pool.queue) != 0 { + t.Errorf("queued accounts mismatch: have %d, want %d", len(pool.queue), 0) + } + if pool.all.Count() != len(txs) { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), len(txs)) + } + // Reduce the balance of the account, and check that transactions are reorganised + for _, addr := range accs { + testAddBalance(pool, addr, big.NewInt(-1)) + } + <-pool.requestReset(nil, nil) + + // The first account's first transaction remains valid, check that subsequent + // ones are either filtered out, or queued up for later. + if _, ok := pool.pending[accs[0]].txs.items[txs[0].Nonce()]; !ok { + t.Errorf("tx %d: valid and funded transaction missing from pending pool: %v", 0, txs[0]) + } + if _, ok := pool.queue[accs[0]].txs.items[txs[0].Nonce()]; ok { + t.Errorf("tx %d: valid and funded transaction present in future queue: %v", 0, txs[0]) + } + for i, tx := range txs[1:100] { + if i%2 == 1 { + if _, ok := pool.pending[accs[0]].txs.items[tx.Nonce()]; ok { + t.Errorf("tx %d: valid but future transaction present in pending pool: %v", i+1, tx) + } + if _, ok := pool.queue[accs[0]].txs.items[tx.Nonce()]; !ok { + t.Errorf("tx %d: valid but future transaction missing from future queue: %v", i+1, tx) + } + } else { + if _, ok := pool.pending[accs[0]].txs.items[tx.Nonce()]; ok { + t.Errorf("tx %d: out-of-fund transaction present in pending pool: %v", i+1, tx) + } + if _, ok := pool.queue[accs[0]].txs.items[tx.Nonce()]; ok { + t.Errorf("tx %d: out-of-fund transaction present in future queue: %v", i+1, tx) + } + } + } + // The second account's first transaction got invalid, check that all transactions + // are either filtered out, or queued up for later. + if pool.pending[accs[1]] != nil { + t.Errorf("invalidated account still has pending transactions") + } + for i, tx := range txs[100:] { + if i%2 == 1 { + if _, ok := pool.queue[accs[1]].txs.items[tx.Nonce()]; !ok { + t.Errorf("tx %d: valid but future transaction missing from future queue: %v", 100+i, tx) + } + } else { + if _, ok := pool.queue[accs[1]].txs.items[tx.Nonce()]; ok { + t.Errorf("tx %d: out-of-fund transaction present in future queue: %v", 100+i, tx) + } + } + } + if pool.all.Count() != len(txs)/2 { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), len(txs)/2) + } +} + +// Tests that if the transaction pool has both executable and non-executable +// transactions from an origin account, filling the nonce gap moves all queued +// ones into the pending pool. +func TestTransactionGapFilling(t *testing.T) { + t.Parallel() + + // Create a test account and fund it + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000000)) + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, testTxPoolConfig.AccountQueue+5) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Create a pending and a queued transaction with a nonce-gap in between + pool.AddRemotesSync([]*types.Transaction{ + transaction(0, 100000, key), + transaction(2, 100000, key), + }) + pending, queued := pool.Stats() + if pending != 1 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 1) + } + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + if err := validateEvents(events, 1); err != nil { + t.Fatalf("original event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Fill the nonce gap and ensure all transactions become pending + if err := pool.addRemoteSync(transaction(1, 100000, key)); err != nil { + t.Fatalf("failed to add gapped transaction: %v", err) + } + pending, queued = pool.Stats() + if pending != 3 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 3) + } + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if err := validateEvents(events, 2); err != nil { + t.Fatalf("gap-filling event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that if the transaction count belonging to a single account goes above +// some threshold, the higher transactions are dropped to prevent DOS attacks. +func TestTransactionQueueAccountLimiting(t *testing.T) { + t.Parallel() + + // Create a test account and fund it + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000000)) + + // Keep queuing up transactions and make sure all above a limit are dropped + for i := uint64(1); i <= testTxPoolConfig.AccountQueue+5; i++ { + if err := pool.addRemoteSync(transaction(i, 100000, key)); err != nil { + t.Fatalf("tx %d: failed to add transaction: %v", i, err) + } + if len(pool.pending) != 0 { + t.Errorf("tx %d: pending pool size mismatch: have %d, want %d", i, len(pool.pending), 0) + } + if i <= testTxPoolConfig.AccountQueue { + if pool.queue[account].Len() != int(i) { + t.Errorf("tx %d: queue size mismatch: have %d, want %d", i, pool.queue[account].Len(), i) + } + } else { + if pool.queue[account].Len() != int(testTxPoolConfig.AccountQueue) { + t.Errorf("tx %d: queue limit mismatch: have %d, want %d", i, pool.queue[account].Len(), testTxPoolConfig.AccountQueue) + } + } + } + if pool.all.Count() != int(testTxPoolConfig.AccountQueue) { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), testTxPoolConfig.AccountQueue) + } +} + +// Tests that if the transaction count belonging to multiple accounts go above +// some threshold, the higher transactions are dropped to prevent DOS attacks. +// +// This logic should not hold for local transactions, unless the local tracking +// mechanism is disabled. +func TestTransactionQueueGlobalLimiting(t *testing.T) { + testTransactionQueueGlobalLimiting(t, false) +} + +func TestTransactionQueueGlobalLimitingNoLocals(t *testing.T) { + testTransactionQueueGlobalLimiting(t, true) +} + +func testTransactionQueueGlobalLimiting(t *testing.T, nolocals bool) { + t.Parallel() + + // Create the pool to test the limit enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.NoLocals = nolocals + config.GlobalQueue = config.AccountQueue*3 - 1 // reduce the queue limits to shorten test time (-1 to make it non divisible) + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create a number of test accounts and fund them (last one will be the local) + keys := make([]*ecdsa.PrivateKey, 5) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + local := keys[len(keys)-1] + + // Generate and queue a batch of transactions + nonces := make(map[common.Address]uint64) + + txs := make(types.Transactions, 0, 3*config.GlobalQueue) + for len(txs) < cap(txs) { + key := keys[rand.Intn(len(keys)-1)] // skip adding transactions with the local account + addr := crypto.PubkeyToAddress(key.PublicKey) + + txs = append(txs, transaction(nonces[addr]+1, 100000, key)) + nonces[addr]++ + } + // Import the batch and verify that limits have been enforced + pool.AddRemotesSync(txs) + + queued := 0 + for addr, list := range pool.queue { + if list.Len() > int(config.AccountQueue) { + t.Errorf("addr %x: queued accounts overflown allowance: %d > %d", addr, list.Len(), config.AccountQueue) + } + queued += list.Len() + } + if queued > int(config.GlobalQueue) { + t.Fatalf("total transactions overflow allowance: %d > %d", queued, config.GlobalQueue) + } + // Generate a batch of transactions from the local account and import them + txs = txs[:0] + for i := uint64(0); i < 3*config.GlobalQueue; i++ { + txs = append(txs, transaction(i+1, 100000, local)) + } + pool.AddLocals(txs) + + // If locals are disabled, the previous eviction algorithm should apply here too + if nolocals { + queued := 0 + for addr, list := range pool.queue { + if list.Len() > int(config.AccountQueue) { + t.Errorf("addr %x: queued accounts overflown allowance: %d > %d", addr, list.Len(), config.AccountQueue) + } + queued += list.Len() + } + if queued > int(config.GlobalQueue) { + t.Fatalf("total transactions overflow allowance: %d > %d", queued, config.GlobalQueue) + } + } else { + // Local exemptions are enabled, make sure the local account owned the queue + if len(pool.queue) != 1 { + t.Errorf("multiple accounts in queue: have %v, want %v", len(pool.queue), 1) + } + // Also ensure no local transactions are ever dropped, even if above global limits + if queued := pool.queue[crypto.PubkeyToAddress(local.PublicKey)].Len(); uint64(queued) != 3*config.GlobalQueue { + t.Fatalf("local account queued transaction count mismatch: have %v, want %v", queued, 3*config.GlobalQueue) + } + } +} + +// Tests that if an account remains idle for a prolonged amount of time, any +// non-executable transactions queued up are dropped to prevent wasting resources +// on shuffling them around. +// +// This logic should not hold for local transactions, unless the local tracking +// mechanism is disabled. +func TestTransactionQueueTimeLimiting(t *testing.T) { + testTransactionQueueTimeLimiting(t, false) +} + +func TestTransactionQueueTimeLimitingNoLocals(t *testing.T) { + testTransactionQueueTimeLimiting(t, true) +} + +func testTransactionQueueTimeLimiting(t *testing.T, nolocals bool) { + // Reduce the eviction interval to a testable amount + defer func(old time.Duration) { evictionInterval = old }(evictionInterval) + evictionInterval = time.Millisecond * 100 + + // Create the pool to test the non-expiration enforcement + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.Lifetime = time.Second + config.NoLocals = nolocals + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create two test accounts to ensure remotes expire but locals do not + local, _ := crypto.GenerateKey() + remote, _ := crypto.GenerateKey() + + testAddBalance(pool, crypto.PubkeyToAddress(local.PublicKey), big.NewInt(1000000000)) + testAddBalance(pool, crypto.PubkeyToAddress(remote.PublicKey), big.NewInt(1000000000)) + + // Add the two transactions and ensure they both are queued up + if err := pool.AddLocal(pricedTransaction(1, 100000, big.NewInt(1), local)); err != nil { + t.Fatalf("failed to add local transaction: %v", err) + } + if err := pool.AddRemote(pricedTransaction(1, 100000, big.NewInt(1), remote)); err != nil { + t.Fatalf("failed to add remote transaction: %v", err) + } + pending, queued := pool.Stats() + if pending != 0 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 0) + } + if queued != 2 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 2) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + + // Allow the eviction interval to run + time.Sleep(2 * evictionInterval) + + // Transactions should not be evicted from the queue yet since lifetime duration has not passed + pending, queued = pool.Stats() + if pending != 0 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 0) + } + if queued != 2 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 2) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + + // Wait a bit for eviction to run and clean up any leftovers, and ensure only the local remains + time.Sleep(2 * config.Lifetime) + + pending, queued = pool.Stats() + if pending != 0 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 0) + } + if nolocals { + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + } else { + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + + // remove current transactions and increase nonce to prepare for a reset and cleanup + statedb.SetNonce(crypto.PubkeyToAddress(remote.PublicKey), 2) + statedb.SetNonce(crypto.PubkeyToAddress(local.PublicKey), 2) + <-pool.requestReset(nil, nil) + + // make sure queue, pending are cleared + pending, queued = pool.Stats() + if pending != 0 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 0) + } + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + + // Queue gapped transactions + if err := pool.AddLocal(pricedTransaction(4, 100000, big.NewInt(1), local)); err != nil { + t.Fatalf("failed to add remote transaction: %v", err) + } + if err := pool.addRemoteSync(pricedTransaction(4, 100000, big.NewInt(1), remote)); err != nil { + t.Fatalf("failed to add remote transaction: %v", err) + } + time.Sleep(5 * evictionInterval) // A half lifetime pass + + // Queue executable transactions, the life cycle should be restarted. + if err := pool.AddLocal(pricedTransaction(2, 100000, big.NewInt(1), local)); err != nil { + t.Fatalf("failed to add remote transaction: %v", err) + } + if err := pool.addRemoteSync(pricedTransaction(2, 100000, big.NewInt(1), remote)); err != nil { + t.Fatalf("failed to add remote transaction: %v", err) + } + time.Sleep(6 * evictionInterval) + + // All gapped transactions shouldn't be kicked out + pending, queued = pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if queued != 2 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 3) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + + // The whole life time pass after last promotion, kick out stale transactions + time.Sleep(2 * config.Lifetime) + pending, queued = pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if nolocals { + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + } else { + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that even if the transaction count belonging to a single account goes +// above some threshold, as long as the transactions are executable, they are +// accepted. +func TestTransactionPendingLimiting(t *testing.T) { + t.Parallel() + + // Create a test account and fund it + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000000)) + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, testTxPoolConfig.AccountQueue+5) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Keep queuing up transactions and make sure all above a limit are dropped + for i := uint64(0); i < testTxPoolConfig.AccountQueue+5; i++ { + if err := pool.addRemoteSync(transaction(i, 100000, key)); err != nil { + t.Fatalf("tx %d: failed to add transaction: %v", i, err) + } + if pool.pending[account].Len() != int(i)+1 { + t.Errorf("tx %d: pending pool size mismatch: have %d, want %d", i, pool.pending[account].Len(), i+1) + } + if len(pool.queue) != 0 { + t.Errorf("tx %d: queue size mismatch: have %d, want %d", i, pool.queue[account].Len(), 0) + } + } + if pool.all.Count() != int(testTxPoolConfig.AccountQueue+5) { + t.Errorf("total transaction mismatch: have %d, want %d", pool.all.Count(), testTxPoolConfig.AccountQueue+5) + } + if err := validateEvents(events, int(testTxPoolConfig.AccountQueue+5)); err != nil { + t.Fatalf("event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that if the transaction count belonging to multiple accounts go above +// some hard threshold, the higher transactions are dropped to prevent DOS +// attacks. +func TestTransactionPendingGlobalLimiting(t *testing.T) { + t.Parallel() + + // Create the pool to test the limit enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.GlobalSlots = config.AccountSlots * 10 + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 5) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + // Generate and queue a batch of transactions + nonces := make(map[common.Address]uint64) + + txs := types.Transactions{} + for _, key := range keys { + addr := crypto.PubkeyToAddress(key.PublicKey) + for j := 0; j < int(config.GlobalSlots)/len(keys)*2; j++ { + txs = append(txs, transaction(nonces[addr], 100000, key)) + nonces[addr]++ + } + } + // Import the batch and verify that limits have been enforced + pool.AddRemotesSync(txs) + + pending := 0 + for _, list := range pool.pending { + pending += list.Len() + } + if pending > int(config.GlobalSlots) { + t.Fatalf("total pending transactions overflow allowance: %d > %d", pending, config.GlobalSlots) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Test the limit on transaction size is enforced correctly. +// This test verifies every transaction having allowed size +// is added to the pool, and longer transactions are rejected. +func TestTransactionAllowedTxSize(t *testing.T) { + t.Parallel() + + // Create a test account and fund it + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000000000)) + + // Compute maximal data size for transactions (lower bound). + // + // It is assumed the fields in the transaction (except of the data) are: + // - nonce <= 32 bytes + // - gasPrice <= 32 bytes + // - gasLimit <= 32 bytes + // - recipient == 20 bytes + // - value <= 32 bytes + // - signature == 65 bytes + // All those fields are summed up to at most 213 bytes. + baseSize := uint64(213) + dataSize := txMaxSize - baseSize + + // Try adding a transaction with maximal allowed size + tx := pricedDataTransaction(0, pool.currentMaxGas, big.NewInt(1), key, dataSize) + if err := pool.addRemoteSync(tx); err != nil { + t.Fatalf("failed to add transaction of size %d, close to maximal: %v", int(tx.Size()), err) + } + // Try adding a transaction with random allowed size + if err := pool.addRemoteSync(pricedDataTransaction(1, pool.currentMaxGas, big.NewInt(1), key, uint64(rand.Intn(int(dataSize))))); err != nil { + t.Fatalf("failed to add transaction of random allowed size: %v", err) + } + // Try adding a transaction of minimal not allowed size + if err := pool.addRemoteSync(pricedDataTransaction(2, pool.currentMaxGas, big.NewInt(1), key, txMaxSize)); err == nil { + t.Fatalf("expected rejection on slightly oversize transaction") + } + // Try adding a transaction of random not allowed size + if err := pool.addRemoteSync(pricedDataTransaction(2, pool.currentMaxGas, big.NewInt(1), key, dataSize+1+uint64(rand.Intn(10*txMaxSize)))); err == nil { + t.Fatalf("expected rejection on oversize transaction") + } + // Run some sanity checks on the pool internals + pending, queued := pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that if transactions start being capped, transactions are also removed from 'all' +func TestTransactionCapClearsFromAll(t *testing.T) { + t.Parallel() + + // Create the pool to test the limit enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.AccountSlots = 2 + config.AccountQueue = 2 + config.GlobalSlots = 8 + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create a number of test accounts and fund them + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, addr, big.NewInt(1000000)) + + txs := types.Transactions{} + for j := 0; j < int(config.GlobalSlots)*2; j++ { + txs = append(txs, transaction(uint64(j), 100000, key)) + } + // Import the batch and verify that limits have been enforced + pool.AddRemotes(txs) + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that if the transaction count belonging to multiple accounts go above +// some hard threshold, if they are under the minimum guaranteed slot count then +// the transactions are still kept. +func TestTransactionPendingMinimumAllowance(t *testing.T) { + t.Parallel() + + // Create the pool to test the limit enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.GlobalSlots = 1 + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 5) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + // Generate and queue a batch of transactions + nonces := make(map[common.Address]uint64) + + txs := types.Transactions{} + for _, key := range keys { + addr := crypto.PubkeyToAddress(key.PublicKey) + for j := 0; j < int(config.AccountSlots)*2; j++ { + txs = append(txs, transaction(nonces[addr], 100000, key)) + nonces[addr]++ + } + } + // Import the batch and verify that limits have been enforced + pool.AddRemotesSync(txs) + + for addr, list := range pool.pending { + if list.Len() != int(config.AccountSlots) { + t.Errorf("addr %x: total pending transactions mismatch: have %d, want %d", addr, list.Len(), config.AccountSlots) + } + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that setting the transaction pool gas price to a higher value correctly +// discards everything cheaper than that and moves any gapped transactions back +// from the pending pool to the queue. +// +// Note, local transactions are never allowed to be dropped. +func TestTransactionPoolRepricing(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, 32) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 4) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + // Generate and queue a batch of transactions, both pending and queued + txs := types.Transactions{} + + txs = append(txs, pricedTransaction(0, 100000, big.NewInt(2), keys[0])) + txs = append(txs, pricedTransaction(1, 100000, big.NewInt(1), keys[0])) + txs = append(txs, pricedTransaction(2, 100000, big.NewInt(2), keys[0])) + + txs = append(txs, pricedTransaction(0, 100000, big.NewInt(1), keys[1])) + txs = append(txs, pricedTransaction(1, 100000, big.NewInt(2), keys[1])) + txs = append(txs, pricedTransaction(2, 100000, big.NewInt(2), keys[1])) + + txs = append(txs, pricedTransaction(1, 100000, big.NewInt(2), keys[2])) + txs = append(txs, pricedTransaction(2, 100000, big.NewInt(1), keys[2])) + txs = append(txs, pricedTransaction(3, 100000, big.NewInt(2), keys[2])) + + ltx := pricedTransaction(0, 100000, big.NewInt(1), keys[3]) + + // Import the batch and that both pending and queued transactions match up + pool.AddRemotesSync(txs) + pool.AddLocal(ltx) + + pending, queued := pool.Stats() + if pending != 7 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 7) + } + if queued != 3 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 3) + } + if err := validateEvents(events, 7); err != nil { + t.Fatalf("original event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Reprice the pool and check that underpriced transactions get dropped + pool.SetGasPrice(big.NewInt(2)) + + pending, queued = pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if queued != 5 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 5) + } + if err := validateEvents(events, 0); err != nil { + t.Fatalf("reprice event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Check that we can't add the old transactions back + if err := pool.AddRemote(pricedTransaction(1, 100000, big.NewInt(1), keys[0])); !strings.Contains(err.Error(), ErrUnderpriced.Error()) { + t.Fatalf("adding underpriced pending transaction error mismatch: have %v, want error to conain %v", err, ErrUnderpriced) + } + if err := pool.AddRemote(pricedTransaction(0, 100000, big.NewInt(1), keys[1])); !strings.Contains(err.Error(), ErrUnderpriced.Error()) { + t.Fatalf("adding underpriced pending transaction error mismatch: have %v, want error to conain %v", err, ErrUnderpriced) + } + if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(1), keys[2])); !strings.Contains(err.Error(), ErrUnderpriced.Error()) { + t.Fatalf("adding underpriced queued transaction error mismatch: have %v, want error to conain %v", err, ErrUnderpriced) + } + if err := validateEvents(events, 0); err != nil { + t.Fatalf("post-reprice event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // However we can add local underpriced transactions + tx := pricedTransaction(1, 100000, big.NewInt(1), keys[3]) + if err := pool.AddLocal(tx); err != nil { + t.Fatalf("failed to add underpriced local transaction: %v", err) + } + if pending, _ = pool.Stats(); pending != 3 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 3) + } + if err := validateEvents(events, 1); err != nil { + t.Fatalf("post-reprice local event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // And we can fill gaps with properly priced transactions + if err := pool.AddRemote(pricedTransaction(1, 100000, big.NewInt(2), keys[0])); err != nil { + t.Fatalf("failed to add pending transaction: %v", err) + } + if err := pool.AddRemote(pricedTransaction(0, 100000, big.NewInt(2), keys[1])); err != nil { + t.Fatalf("failed to add pending transaction: %v", err) + } + if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(2), keys[2])); err != nil { + t.Fatalf("failed to add queued transaction: %v", err) + } + if err := validateEvents(events, 5); err != nil { + t.Fatalf("post-reprice event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that setting the transaction pool gas price to a higher value correctly +// discards everything cheaper (legacy & dynamic fee) than that and moves any +// gapped transactions back from the pending pool to the queue. +// +// Note, local transactions are never allowed to be dropped. +func TestTransactionPoolRepricingDynamicFee(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + pool, _ := setupTxPoolWithConfig(eip1559Config) + defer pool.Stop() + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, 32) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 4) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + // Generate and queue a batch of transactions, both pending and queued + txs := types.Transactions{} + + txs = append(txs, pricedTransaction(0, 100000, big.NewInt(2), keys[0])) + txs = append(txs, pricedTransaction(1, 100000, big.NewInt(1), keys[0])) + txs = append(txs, pricedTransaction(2, 100000, big.NewInt(2), keys[0])) + + txs = append(txs, dynamicFeeTx(0, 100000, big.NewInt(2), big.NewInt(1), keys[1])) + txs = append(txs, dynamicFeeTx(1, 100000, big.NewInt(3), big.NewInt(2), keys[1])) + txs = append(txs, dynamicFeeTx(2, 100000, big.NewInt(3), big.NewInt(2), keys[1])) + + txs = append(txs, dynamicFeeTx(1, 100000, big.NewInt(2), big.NewInt(2), keys[2])) + txs = append(txs, dynamicFeeTx(2, 100000, big.NewInt(1), big.NewInt(1), keys[2])) + txs = append(txs, dynamicFeeTx(3, 100000, big.NewInt(2), big.NewInt(2), keys[2])) + + ltx := dynamicFeeTx(0, 100000, big.NewInt(2), big.NewInt(1), keys[3]) + + // Import the batch and that both pending and queued transactions match up + pool.AddRemotesSync(txs) + pool.AddLocal(ltx) + + pending, queued := pool.Stats() + if pending != 7 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 7) + } + if queued != 3 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 3) + } + if err := validateEvents(events, 7); err != nil { + t.Fatalf("original event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Reprice the pool and check that underpriced transactions get dropped + pool.SetGasPrice(big.NewInt(2)) + + pending, queued = pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if queued != 5 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 5) + } + if err := validateEvents(events, 0); err != nil { + t.Fatalf("reprice event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Check that we can't add the old transactions back + tx := pricedTransaction(1, 100000, big.NewInt(1), keys[0]) + if err := pool.AddRemote(tx); !strings.Contains(err.Error(), ErrUnderpriced.Error()) { + t.Fatalf("adding underpriced pending transaction error mismatch: have %v, want %v", err, ErrUnderpriced) + } + tx = dynamicFeeTx(0, 100000, big.NewInt(2), big.NewInt(1), keys[1]) + if err := pool.AddRemote(tx); !strings.Contains(err.Error(), ErrUnderpriced.Error()) { + t.Fatalf("adding underpriced pending transaction error mismatch: have %v, want %v", err, ErrUnderpriced) + } + tx = dynamicFeeTx(2, 100000, big.NewInt(1), big.NewInt(1), keys[2]) + if err := pool.AddRemote(tx); !strings.Contains(err.Error(), ErrUnderpriced.Error()) { + t.Fatalf("adding underpriced queued transaction error mismatch: have %v, want %v", err, ErrUnderpriced) + } + if err := validateEvents(events, 0); err != nil { + t.Fatalf("post-reprice event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // However we can add local underpriced transactions + tx = dynamicFeeTx(1, 100000, big.NewInt(1), big.NewInt(1), keys[3]) + if err := pool.AddLocal(tx); err != nil { + t.Fatalf("failed to add underpriced local transaction: %v", err) + } + if pending, _ = pool.Stats(); pending != 3 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 3) + } + if err := validateEvents(events, 1); err != nil { + t.Fatalf("post-reprice local event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // And we can fill gaps with properly priced transactions + tx = pricedTransaction(1, 100000, big.NewInt(2), keys[0]) + if err := pool.AddRemote(tx); err != nil { + t.Fatalf("failed to add pending transaction: %v", err) + } + tx = dynamicFeeTx(0, 100000, big.NewInt(3), big.NewInt(2), keys[1]) + if err := pool.AddRemote(tx); err != nil { + t.Fatalf("failed to add pending transaction: %v", err) + } + tx = dynamicFeeTx(2, 100000, big.NewInt(2), big.NewInt(2), keys[2]) + if err := pool.AddRemote(tx); err != nil { + t.Fatalf("failed to add queued transaction: %v", err) + } + if err := validateEvents(events, 5); err != nil { + t.Fatalf("post-reprice event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that setting the transaction pool gas price to a higher value does not +// remove local transactions (legacy & dynamic fee). +func TestTransactionPoolRepricingKeepsLocals(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + pool := NewTxPool(testTxPoolConfig, eip1559Config, blockchain) + defer pool.Stop() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 3) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000*1000000)) + } + // Create transaction (both pending and queued) with a linearly growing gasprice + for i := uint64(0); i < 500; i++ { + // Add pending transaction. + pendingTx := pricedTransaction(i, 100000, big.NewInt(int64(i)), keys[2]) + if err := pool.AddLocal(pendingTx); err != nil { + t.Fatal(err) + } + // Add queued transaction. + queuedTx := pricedTransaction(i+501, 100000, big.NewInt(int64(i)), keys[2]) + if err := pool.AddLocal(queuedTx); err != nil { + t.Fatal(err) + } + + // Add pending dynamic fee transaction. + pendingTx = dynamicFeeTx(i, 100000, big.NewInt(int64(i)+1), big.NewInt(int64(i)), keys[1]) + if err := pool.AddLocal(pendingTx); err != nil { + t.Fatal(err) + } + // Add queued dynamic fee transaction. + queuedTx = dynamicFeeTx(i+501, 100000, big.NewInt(int64(i)+1), big.NewInt(int64(i)), keys[1]) + if err := pool.AddLocal(queuedTx); err != nil { + t.Fatal(err) + } + } + pending, queued := pool.Stats() + expPending, expQueued := 1000, 1000 + validate := func() { + pending, queued = pool.Stats() + if pending != expPending { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, expPending) + } + if queued != expQueued { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, expQueued) + } + + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + } + validate() + + // Reprice the pool and check that nothing is dropped + pool.SetGasPrice(big.NewInt(2)) + validate() + + pool.SetGasPrice(big.NewInt(2)) + pool.SetGasPrice(big.NewInt(4)) + pool.SetGasPrice(big.NewInt(8)) + pool.SetGasPrice(big.NewInt(100)) + validate() +} + +// Tests that when the pool reaches its global transaction limit, underpriced +// transactions are gradually shifted out for more expensive ones and any gapped +// pending transactions are moved into the queue. +// +// Note, local transactions are never allowed to be dropped. +func TestTransactionPoolUnderpricing(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.GlobalSlots = 2 + config.GlobalQueue = 2 + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, 32) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 4) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + // Generate and queue a batch of transactions, both pending and queued + txs := types.Transactions{} + + txs = append(txs, pricedTransaction(0, 100000, big.NewInt(1), keys[0])) + txs = append(txs, pricedTransaction(1, 100000, big.NewInt(2), keys[0])) + + txs = append(txs, pricedTransaction(1, 100000, big.NewInt(1), keys[1])) + + ltx := pricedTransaction(0, 100000, big.NewInt(1), keys[2]) + + // Import the batch and that both pending and queued transactions match up + pool.AddRemotesSync(txs) + pool.AddLocal(ltx) + + pending, queued := pool.Stats() + if pending != 3 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 3) + } + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + if err := validateEvents(events, 3); err != nil { + t.Fatalf("original event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Ensure that adding an underpriced transaction on block limit fails + if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1), keys[1])); err != ErrUnderpriced { + t.Fatalf("adding underpriced pending transaction error mismatch: have %v, want %v", err, ErrUnderpriced) + } + // Ensure that adding high priced transactions drops cheap ones, but not own + if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(3), keys[1])); err != nil { // +K1:0 => -K1:1 => Pend K0:0, K0:1, K1:0, K2:0; Que - + t.Fatalf("failed to add well priced transaction: %v", err) + } + if err := pool.addRemoteSync(pricedTransaction(2, 100000, big.NewInt(4), keys[1])); err != nil { // +K1:2 => -K0:0 => Pend K1:0, K2:0; Que K0:1 K1:2 + t.Fatalf("failed to add well priced transaction: %v", err) + } + if err := pool.addRemoteSync(pricedTransaction(3, 100000, big.NewInt(5), keys[1])); err != nil { // +K1:3 => -K0:1 => Pend K1:0, K2:0; Que K1:2 K1:3 + t.Fatalf("failed to add well priced transaction: %v", err) + } + pending, queued = pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if queued != 2 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 2) + } + if err := validateEvents(events, 1); err != nil { + t.Fatalf("additional event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Ensure that adding local transactions can push out even higher priced ones + ltx = pricedTransaction(1, 100000, big.NewInt(0), keys[2]) + if err := pool.AddLocal(ltx); err != nil { + t.Fatalf("failed to append underpriced local transaction: %v", err) + } + ltx = pricedTransaction(0, 100000, big.NewInt(0), keys[3]) + if err := pool.AddLocal(ltx); err != nil { + t.Fatalf("failed to add new underpriced local transaction: %v", err) + } + pending, queued = pool.Stats() + if pending != 3 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 3) + } + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + if err := validateEvents(events, 2); err != nil { + t.Fatalf("local event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that more expensive transactions push out cheap ones from the pool, but +// without producing instability by creating gaps that start jumping transactions +// back and forth between queued/pending. +func TestTransactionPoolStableUnderpricing(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.GlobalSlots = 128 + config.GlobalQueue = 0 + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, 32) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 2) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + // Fill up the entire queue with the same transaction price points + txs := types.Transactions{} + for i := uint64(0); i < config.GlobalSlots; i++ { + txs = append(txs, pricedTransaction(i, 100000, big.NewInt(1), keys[0])) + } + pool.AddRemotesSync(txs) + + pending, queued := pool.Stats() + if pending != int(config.GlobalSlots) { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, config.GlobalSlots) + } + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if err := validateEvents(events, int(config.GlobalSlots)); err != nil { + t.Fatalf("original event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Ensure that adding high priced transactions drops a cheap, but doesn't produce a gap + if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(3), keys[1])); err != nil { + t.Fatalf("failed to add well priced transaction: %v", err) + } + pending, queued = pool.Stats() + if pending != int(config.GlobalSlots) { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, config.GlobalSlots) + } + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if err := validateEvents(events, 1); err != nil { + t.Fatalf("additional event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that when the pool reaches its global transaction limit, underpriced +// transactions (legacy & dynamic fee) are gradually shifted out for more +// expensive ones and any gapped pending transactions are moved into the queue. +// +// Note, local transactions are never allowed to be dropped. +func TestTransactionPoolUnderpricingDynamicFee(t *testing.T) { + t.Parallel() + + pool, _ := setupTxPoolWithConfig(eip1559Config) + defer pool.Stop() + + pool.config.GlobalSlots = 2 + pool.config.GlobalQueue = 2 + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, 32) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Create a number of test accounts and fund them + keys := make([]*ecdsa.PrivateKey, 4) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + + // Generate and queue a batch of transactions, both pending and queued + txs := types.Transactions{} + + txs = append(txs, dynamicFeeTx(0, 100000, big.NewInt(3), big.NewInt(2), keys[0])) + txs = append(txs, pricedTransaction(1, 100000, big.NewInt(2), keys[0])) + txs = append(txs, dynamicFeeTx(1, 100000, big.NewInt(2), big.NewInt(1), keys[1])) + + ltx := dynamicFeeTx(0, 100000, big.NewInt(2), big.NewInt(1), keys[2]) + + // Import the batch and that both pending and queued transactions match up + pool.AddRemotesSync(txs) // Pend K0:0, K0:1; Que K1:1 + pool.AddLocal(ltx) // +K2:0 => Pend K0:0, K0:1, K2:0; Que K1:1 + + pending, queued := pool.Stats() + if pending != 3 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 3) + } + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + if err := validateEvents(events, 3); err != nil { + t.Fatalf("original event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + + // Ensure that adding an underpriced transaction fails + tx := dynamicFeeTx(0, 100000, big.NewInt(2), big.NewInt(1), keys[1]) + if err := pool.addRemoteSync(tx); err != ErrUnderpriced { // Pend K0:0, K0:1, K2:0; Que K1:1 + t.Fatalf("adding underpriced pending transaction error mismatch: have %v, want %v", err, ErrUnderpriced) + } + + // Ensure that adding high priced transactions drops cheap ones, but not own + tx = pricedTransaction(0, 100000, big.NewInt(2), keys[1]) + if err := pool.addRemoteSync(tx); err != nil { // +K1:0, -K1:1 => Pend K0:0, K0:1, K1:0, K2:0; Que - + t.Fatalf("failed to add well priced transaction: %v", err) + } + + tx = pricedTransaction(2, 100000, big.NewInt(3), keys[1]) + if err := pool.addRemoteSync(tx); err != nil { // +K1:2, -K0:1 => Pend K0:0 K1:0, K2:0; Que K1:2 + t.Fatalf("failed to add well priced transaction: %v", err) + } + tx = dynamicFeeTx(3, 100000, big.NewInt(4), big.NewInt(1), keys[1]) + if err := pool.addRemoteSync(tx); err != nil { // +K1:3, -K1:0 => Pend K0:0 K2:0; Que K1:2 K1:3 + t.Fatalf("failed to add well priced transaction: %v", err) + } + pending, queued = pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if queued != 2 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 2) + } + if err := validateEvents(events, 1); err != nil { + t.Fatalf("additional event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Ensure that adding local transactions can push out even higher priced ones + ltx = dynamicFeeTx(1, 100000, big.NewInt(0), big.NewInt(0), keys[2]) + if err := pool.AddLocal(ltx); err != nil { + t.Fatalf("failed to append underpriced local transaction: %v", err) + } + ltx = dynamicFeeTx(0, 100000, big.NewInt(0), big.NewInt(0), keys[3]) + if err := pool.AddLocal(ltx); err != nil { + t.Fatalf("failed to add new underpriced local transaction: %v", err) + } + pending, queued = pool.Stats() + if pending != 3 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 3) + } + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + if err := validateEvents(events, 2); err != nil { + t.Fatalf("local event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests whether highest fee cap transaction is retained after a batch of high effective +// tip transactions are added and vice versa +func TestDualHeapEviction(t *testing.T) { + t.Parallel() + + pool, _ := setupTxPoolWithConfig(eip1559Config) + defer pool.Stop() + + pool.config.GlobalSlots = 10 + pool.config.GlobalQueue = 10 + + var ( + highTip, highCap *types.Transaction + baseFee int + ) + + check := func(tx *types.Transaction, name string) { + if pool.all.GetRemote(tx.Hash()) == nil { + t.Fatalf("highest %s transaction evicted from the pool", name) + } + } + + add := func(urgent bool) { + for i := 0; i < 20; i++ { + var tx *types.Transaction + // Create a test accounts and fund it + key, _ := crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(key.PublicKey), big.NewInt(1000000000000)) + if urgent { + tx = dynamicFeeTx(0, 100000, big.NewInt(int64(baseFee+1+i)), big.NewInt(int64(1+i)), key) + highTip = tx + } else { + tx = dynamicFeeTx(0, 100000, big.NewInt(int64(baseFee+200+i)), big.NewInt(1), key) + highCap = tx + } + pool.AddRemotesSync([]*types.Transaction{tx}) + } + pending, queued := pool.Stats() + if pending+queued != 20 { + t.Fatalf("transaction count mismatch: have %d, want %d", pending+queued, 10) + } + } + + add(false) + for baseFee = 0; baseFee <= 1000; baseFee += 100 { + pool.mu.Lock() + pool.priced.SetBaseFee(big.NewInt(int64(baseFee))) + pool.mu.Unlock() + add(true) + check(highCap, "fee cap") + add(false) + check(highTip, "effective tip") + } + + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that the pool rejects duplicate transactions. +func TestTransactionDeduplication(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create a test account to add transactions with + key, _ := crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(key.PublicKey), big.NewInt(1000000000)) + + // Create a batch of transactions and add a few of them + txs := make([]*types.Transaction, 16) + for i := 0; i < len(txs); i++ { + txs[i] = pricedTransaction(uint64(i), 100000, big.NewInt(1), key) + } + var firsts []*types.Transaction + for i := 0; i < len(txs); i += 2 { + firsts = append(firsts, txs[i]) + } + errs := pool.AddRemotesSync(firsts) + if len(errs) != len(firsts) { + t.Fatalf("first add mismatching result count: have %d, want %d", len(errs), len(firsts)) + } + for i, err := range errs { + if err != nil { + t.Errorf("add %d failed: %v", i, err) + } + } + pending, queued := pool.Stats() + if pending != 1 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 1) + } + if queued != len(txs)/2-1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, len(txs)/2-1) + } + // Try to add all of them now and ensure previous ones error out as knowns + errs = pool.AddRemotesSync(txs) + if len(errs) != len(txs) { + t.Fatalf("all add mismatching result count: have %d, want %d", len(errs), len(txs)) + } + for i, err := range errs { + if i%2 == 0 && err == nil { + t.Errorf("add %d succeeded, should have failed as known", i) + } + if i%2 == 1 && err != nil { + t.Errorf("add %d failed: %v", i, err) + } + } + pending, queued = pool.Stats() + if pending != len(txs) { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, len(txs)) + } + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that the pool rejects replacement transactions that don't meet the minimum +// price bump required. +func TestTransactionReplacement(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, 32) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Create a test account to add transactions with + key, _ := crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(key.PublicKey), big.NewInt(1000000000)) + + // Add pending transactions, ensuring the minimum price bump is enforced for replacement (for ultra low prices too) + price := int64(100) + threshold := (price * (100 + int64(testTxPoolConfig.PriceBump))) / 100 + + if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1), key)); err != nil { + t.Fatalf("failed to add original cheap pending transaction: %v", err) + } + if err := pool.AddRemote(pricedTransaction(0, 100001, big.NewInt(1), key)); err != ErrReplaceUnderpriced { + t.Fatalf("original cheap pending transaction replacement error mismatch: have %v, want %v", err, ErrReplaceUnderpriced) + } + if err := pool.AddRemote(pricedTransaction(0, 100000, big.NewInt(2), key)); err != nil { + t.Fatalf("failed to replace original cheap pending transaction: %v", err) + } + if err := validateEvents(events, 2); err != nil { + t.Fatalf("cheap replacement event firing failed: %v", err) + } + + if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(price), key)); err != nil { + t.Fatalf("failed to add original proper pending transaction: %v", err) + } + if err := pool.AddRemote(pricedTransaction(0, 100001, big.NewInt(threshold-1), key)); err != ErrReplaceUnderpriced { + t.Fatalf("original proper pending transaction replacement error mismatch: have %v, want %v", err, ErrReplaceUnderpriced) + } + if err := pool.AddRemote(pricedTransaction(0, 100000, big.NewInt(threshold), key)); err != nil { + t.Fatalf("failed to replace original proper pending transaction: %v", err) + } + if err := validateEvents(events, 2); err != nil { + t.Fatalf("proper replacement event firing failed: %v", err) + } + + // Add queued transactions, ensuring the minimum price bump is enforced for replacement (for ultra low prices too) + if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(1), key)); err != nil { + t.Fatalf("failed to add original cheap queued transaction: %v", err) + } + if err := pool.AddRemote(pricedTransaction(2, 100001, big.NewInt(1), key)); err != ErrReplaceUnderpriced { + t.Fatalf("original cheap queued transaction replacement error mismatch: have %v, want %v", err, ErrReplaceUnderpriced) + } + if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(2), key)); err != nil { + t.Fatalf("failed to replace original cheap queued transaction: %v", err) + } + + if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(price), key)); err != nil { + t.Fatalf("failed to add original proper queued transaction: %v", err) + } + if err := pool.AddRemote(pricedTransaction(2, 100001, big.NewInt(threshold-1), key)); err != ErrReplaceUnderpriced { + t.Fatalf("original proper queued transaction replacement error mismatch: have %v, want %v", err, ErrReplaceUnderpriced) + } + if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(threshold), key)); err != nil { + t.Fatalf("failed to replace original proper queued transaction: %v", err) + } + + if err := validateEvents(events, 0); err != nil { + t.Fatalf("queued replacement event firing failed: %v", err) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that the pool rejects replacement dynamic fee transactions that don't +// meet the minimum price bump required. +func TestTransactionReplacementDynamicFee(t *testing.T) { + t.Parallel() + + // Create the pool to test the pricing enforcement with + pool, key := setupTxPoolWithConfig(eip1559Config) + defer pool.Stop() + testAddBalance(pool, crypto.PubkeyToAddress(key.PublicKey), big.NewInt(1000000000)) + + // Keep track of transaction events to ensure all executables get announced + events := make(chan NewTxsEvent, 32) + sub := pool.txFeed.Subscribe(events) + defer sub.Unsubscribe() + + // Add pending transactions, ensuring the minimum price bump is enforced for replacement (for ultra low prices too) + gasFeeCap := int64(100) + feeCapThreshold := (gasFeeCap * (100 + int64(testTxPoolConfig.PriceBump))) / 100 + gasTipCap := int64(60) + tipThreshold := (gasTipCap * (100 + int64(testTxPoolConfig.PriceBump))) / 100 + + // Run the following identical checks for both the pending and queue pools: + // 1. Send initial tx => accept + // 2. Don't bump tip or fee cap => discard + // 3. Bump both more than min => accept + // 4. Check events match expected (2 new executable txs during pending, 0 during queue) + // 5. Send new tx with larger tip and gasFeeCap => accept + // 6. Bump tip max allowed so it's still underpriced => discard + // 7. Bump fee cap max allowed so it's still underpriced => discard + // 8. Bump tip min for acceptance => discard + // 9. Bump feecap min for acceptance => discard + // 10. Bump feecap and tip min for acceptance => accept + // 11. Check events match expected (2 new executable txs during pending, 0 during queue) + stages := []string{"pending", "queued"} + for _, stage := range stages { + // Since state is empty, 0 nonce txs are "executable" and can go + // into pending immediately. 2 nonce txs are "happed + nonce := uint64(0) + if stage == "queued" { + nonce = 2 + } + + // 1. Send initial tx => accept + tx := dynamicFeeTx(nonce, 100000, big.NewInt(2), big.NewInt(1), key) + if err := pool.addRemoteSync(tx); err != nil { + t.Fatalf("failed to add original cheap %s transaction: %v", stage, err) + } + // 2. Don't bump tip or feecap => discard + tx = dynamicFeeTx(nonce, 100001, big.NewInt(2), big.NewInt(1), key) + if err := pool.AddRemote(tx); err != ErrReplaceUnderpriced { + t.Fatalf("original cheap %s transaction replacement error mismatch: have %v, want %v", stage, err, ErrReplaceUnderpriced) + } + // 3. Bump both more than min => accept + tx = dynamicFeeTx(nonce, 100000, big.NewInt(3), big.NewInt(2), key) + if err := pool.AddRemote(tx); err != nil { + t.Fatalf("failed to replace original cheap %s transaction: %v", stage, err) + } + // 4. Check events match expected (2 new executable txs during pending, 0 during queue) + count := 2 + if stage == "queued" { + count = 0 + } + if err := validateEvents(events, count); err != nil { + t.Fatalf("cheap %s replacement event firing failed: %v", stage, err) + } + // 5. Send new tx with larger tip and feeCap => accept + tx = dynamicFeeTx(nonce, 100000, big.NewInt(gasFeeCap), big.NewInt(gasTipCap), key) + if err := pool.addRemoteSync(tx); err != nil { + t.Fatalf("failed to add original proper %s transaction: %v", stage, err) + } + // 6. Bump tip max allowed so it's still underpriced => discard + tx = dynamicFeeTx(nonce, 100000, big.NewInt(gasFeeCap), big.NewInt(tipThreshold-1), key) + if err := pool.AddRemote(tx); err != ErrReplaceUnderpriced { + t.Fatalf("original proper %s transaction replacement error mismatch: have %v, want %v", stage, err, ErrReplaceUnderpriced) + } + // 7. Bump fee cap max allowed so it's still underpriced => discard + tx = dynamicFeeTx(nonce, 100000, big.NewInt(feeCapThreshold-1), big.NewInt(gasTipCap), key) + if err := pool.AddRemote(tx); err != ErrReplaceUnderpriced { + t.Fatalf("original proper %s transaction replacement error mismatch: have %v, want %v", stage, err, ErrReplaceUnderpriced) + } + // 8. Bump tip min for acceptance => accept + tx = dynamicFeeTx(nonce, 100000, big.NewInt(gasFeeCap), big.NewInt(tipThreshold), key) + if err := pool.AddRemote(tx); err != ErrReplaceUnderpriced { + t.Fatalf("original proper %s transaction replacement error mismatch: have %v, want %v", stage, err, ErrReplaceUnderpriced) + } + // 9. Bump fee cap min for acceptance => accept + tx = dynamicFeeTx(nonce, 100000, big.NewInt(feeCapThreshold), big.NewInt(gasTipCap), key) + if err := pool.AddRemote(tx); err != ErrReplaceUnderpriced { + t.Fatalf("original proper %s transaction replacement error mismatch: have %v, want %v", stage, err, ErrReplaceUnderpriced) + } + // 10. Check events match expected (3 new executable txs during pending, 0 during queue) + tx = dynamicFeeTx(nonce, 100000, big.NewInt(feeCapThreshold), big.NewInt(tipThreshold), key) + if err := pool.AddRemote(tx); err != nil { + t.Fatalf("failed to replace original cheap %s transaction: %v", stage, err) + } + // 11. Check events match expected (3 new executable txs during pending, 0 during queue) + count = 2 + if stage == "queued" { + count = 0 + } + if err := validateEvents(events, count); err != nil { + t.Fatalf("replacement %s event firing failed: %v", stage, err) + } + } + + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } +} + +// Tests that local transactions are journaled to disk, but remote transactions +// get discarded between restarts. +func TestTransactionJournaling(t *testing.T) { testTransactionJournaling(t, false) } +func TestTransactionJournalingNoLocals(t *testing.T) { testTransactionJournaling(t, true) } + +func testTransactionJournaling(t *testing.T, nolocals bool) { + t.Parallel() + + // Create a temporary file for the journal + file, err := ioutil.TempFile("", "") + if err != nil { + t.Fatalf("failed to create temporary journal: %v", err) + } + journal := file.Name() + defer os.Remove(journal) + + // Clean up the temporary file, we only need the path for now + file.Close() + os.Remove(journal) + + // Create the original pool to inject transaction into the journal + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + config := testTxPoolConfig + config.NoLocals = nolocals + config.Journal = journal + config.Rejournal = time.Second + + pool := NewTxPool(config, params.TestChainConfig, blockchain) + + // Create two test accounts to ensure remotes expire but locals do not + local, _ := crypto.GenerateKey() + remote, _ := crypto.GenerateKey() + + testAddBalance(pool, crypto.PubkeyToAddress(local.PublicKey), big.NewInt(1000000000)) + testAddBalance(pool, crypto.PubkeyToAddress(remote.PublicKey), big.NewInt(1000000000)) + + // Add three local and a remote transactions and ensure they are queued up + if err := pool.AddLocal(pricedTransaction(0, 100000, big.NewInt(1), local)); err != nil { + t.Fatalf("failed to add local transaction: %v", err) + } + if err := pool.AddLocal(pricedTransaction(1, 100000, big.NewInt(1), local)); err != nil { + t.Fatalf("failed to add local transaction: %v", err) + } + if err := pool.AddLocal(pricedTransaction(2, 100000, big.NewInt(1), local)); err != nil { + t.Fatalf("failed to add local transaction: %v", err) + } + if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1), remote)); err != nil { + t.Fatalf("failed to add remote transaction: %v", err) + } + pending, queued := pool.Stats() + if pending != 4 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 4) + } + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Terminate the old pool, bump the local nonce, create a new pool and ensure relevant transaction survive + pool.Stop() + statedb.SetNonce(crypto.PubkeyToAddress(local.PublicKey), 1) + blockchain = newTestBlockchain(statedb, 1000000, new(event.Feed)) + + pool = NewTxPool(config, params.TestChainConfig, blockchain) + + pending, queued = pool.Stats() + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + if nolocals { + if pending != 0 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 0) + } + } else { + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Bump the nonce temporarily and ensure the newly invalidated transaction is removed + statedb.SetNonce(crypto.PubkeyToAddress(local.PublicKey), 2) + <-pool.requestReset(nil, nil) + time.Sleep(2 * config.Rejournal) + pool.Stop() + + statedb.SetNonce(crypto.PubkeyToAddress(local.PublicKey), 1) + blockchain = newTestBlockchain(statedb, 1000000, new(event.Feed)) + pool = NewTxPool(config, params.TestChainConfig, blockchain) + + pending, queued = pool.Stats() + if pending != 0 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 0) + } + if nolocals { + if queued != 0 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0) + } + } else { + if queued != 1 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 1) + } + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + pool.Stop() +} + +// TestTransactionStatusCheck tests that the pool can correctly retrieve the +// pending status of individual transactions. +func TestTransactionStatusCheck(t *testing.T) { + t.Parallel() + + // Create the pool to test the status retrievals with + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + blockchain := newTestBlockchain(statedb, 1000000, new(event.Feed)) + + pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain) + defer pool.Stop() + + // Create the test accounts to check various transaction statuses with + keys := make([]*ecdsa.PrivateKey, 3) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + testAddBalance(pool, crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000)) + } + // Generate and queue a batch of transactions, both pending and queued + txs := types.Transactions{} + + txs = append(txs, pricedTransaction(0, 100000, big.NewInt(1), keys[0])) // Pending only + txs = append(txs, pricedTransaction(0, 100000, big.NewInt(1), keys[1])) // Pending and queued + txs = append(txs, pricedTransaction(2, 100000, big.NewInt(1), keys[1])) + txs = append(txs, pricedTransaction(2, 100000, big.NewInt(1), keys[2])) // Queued only + + // Import the transaction and ensure they are correctly added + pool.AddRemotesSync(txs) + + pending, queued := pool.Stats() + if pending != 2 { + t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 2) + } + if queued != 2 { + t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 2) + } + if err := validateTxPoolInternals(pool); err != nil { + t.Fatalf("pool internal state corrupted: %v", err) + } + // Retrieve the status of each transaction and validate them + hashes := make([]common.Hash, len(txs)) + for i, tx := range txs { + hashes[i] = tx.Hash() + } + hashes = append(hashes, common.Hash{}) + + statuses := pool.Status(hashes) + expect := []TxStatus{TxStatusPending, TxStatusPending, TxStatusQueued, TxStatusQueued, TxStatusUnknown} + + for i := 0; i < len(statuses); i++ { + if statuses[i] != expect[i] { + t.Errorf("transaction %d: status mismatch: have %v, want %v", i, statuses[i], expect[i]) + } + } +} + +// Test the transaction slots consumption is computed correctly +func TestTransactionSlotCount(t *testing.T) { + t.Parallel() + + key, _ := crypto.GenerateKey() + + // Check that an empty transaction consumes a single slot + smallTx := pricedDataTransaction(0, 0, big.NewInt(0), key, 0) + if slots := numSlots(smallTx); slots != 1 { + t.Fatalf("small transactions slot count mismatch: have %d want %d", slots, 1) + } + // Check that a large transaction consumes the correct number of slots + bigTx := pricedDataTransaction(0, 0, big.NewInt(0), key, uint64(10*txSlotSize)) + if slots := numSlots(bigTx); slots != 11 { + t.Fatalf("big transactions slot count mismatch: have %d want %d", slots, 11) + } +} + +// Benchmarks the speed of validating the contents of the pending queue of the +// transaction pool. +func BenchmarkPendingDemotion100(b *testing.B) { benchmarkPendingDemotion(b, 100) } +func BenchmarkPendingDemotion1000(b *testing.B) { benchmarkPendingDemotion(b, 1000) } +func BenchmarkPendingDemotion10000(b *testing.B) { benchmarkPendingDemotion(b, 10000) } + +func benchmarkPendingDemotion(b *testing.B, size int) { + // Add a batch of transactions to a pool one by one + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000000)) + + for i := 0; i < size; i++ { + tx := transaction(uint64(i), 100000, key) + pool.promoteTx(account, tx.Hash(), tx) + } + // Benchmark the speed of pool validation + b.ResetTimer() + for i := 0; i < b.N; i++ { + pool.demoteUnexecutables() + } +} + +// Benchmarks the speed of scheduling the contents of the future queue of the +// transaction pool. +func BenchmarkFuturePromotion100(b *testing.B) { benchmarkFuturePromotion(b, 100) } +func BenchmarkFuturePromotion1000(b *testing.B) { benchmarkFuturePromotion(b, 1000) } +func BenchmarkFuturePromotion10000(b *testing.B) { benchmarkFuturePromotion(b, 10000) } + +func benchmarkFuturePromotion(b *testing.B, size int) { + // Add a batch of transactions to a pool one by one + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000000)) + + for i := 0; i < size; i++ { + tx := transaction(uint64(1+i), 100000, key) + pool.enqueueTx(tx.Hash(), tx, false, true) + } + // Benchmark the speed of pool validation + b.ResetTimer() + for i := 0; i < b.N; i++ { + pool.promoteExecutables(nil) + } +} + +// Benchmarks the speed of batched transaction insertion. +func BenchmarkPoolBatchInsert100(b *testing.B) { benchmarkPoolBatchInsert(b, 100, false) } +func BenchmarkPoolBatchInsert1000(b *testing.B) { benchmarkPoolBatchInsert(b, 1000, false) } +func BenchmarkPoolBatchInsert10000(b *testing.B) { benchmarkPoolBatchInsert(b, 10000, false) } + +func BenchmarkPoolBatchLocalInsert100(b *testing.B) { benchmarkPoolBatchInsert(b, 100, true) } +func BenchmarkPoolBatchLocalInsert1000(b *testing.B) { benchmarkPoolBatchInsert(b, 1000, true) } +func BenchmarkPoolBatchLocalInsert10000(b *testing.B) { benchmarkPoolBatchInsert(b, 10000, true) } + +func benchmarkPoolBatchInsert(b *testing.B, size int, local bool) { + // Generate a batch of transactions to enqueue into the pool + pool, key := setupTxPool() + defer pool.Stop() + + account := crypto.PubkeyToAddress(key.PublicKey) + testAddBalance(pool, account, big.NewInt(1000000)) + + batches := make([]types.Transactions, b.N) + for i := 0; i < b.N; i++ { + batches[i] = make(types.Transactions, size) + for j := 0; j < size; j++ { + batches[i][j] = transaction(uint64(size*i+j), 100000, key) + } + } + // Benchmark importing the transactions into the queue + b.ResetTimer() + for _, batch := range batches { + if local { + pool.AddLocals(batch) + } else { + pool.AddRemotes(batch) + } + } +} + +func BenchmarkInsertRemoteWithAllLocals(b *testing.B) { + // Allocate keys for testing + key, _ := crypto.GenerateKey() + account := crypto.PubkeyToAddress(key.PublicKey) + + remoteKey, _ := crypto.GenerateKey() + remoteAddr := crypto.PubkeyToAddress(remoteKey.PublicKey) + + locals := make([]*types.Transaction, 4096+1024) // Occupy all slots + for i := 0; i < len(locals); i++ { + locals[i] = transaction(uint64(i), 100000, key) + } + remotes := make([]*types.Transaction, 1000) + for i := 0; i < len(remotes); i++ { + remotes[i] = pricedTransaction(uint64(i), 100000, big.NewInt(2), remoteKey) // Higher gasprice + } + // Benchmark importing the transactions into the queue + b.ResetTimer() + for i := 0; i < b.N; i++ { + b.StopTimer() + pool, _ := setupTxPool() + testAddBalance(pool, account, big.NewInt(100000000)) + for _, local := range locals { + pool.AddLocal(local) + } + b.StartTimer() + // Assign a high enough balance for testing + testAddBalance(pool, remoteAddr, big.NewInt(100000000)) + for i := 0; i < len(remotes); i++ { + pool.AddRemotes([]*types.Transaction{remotes[i]}) + } + pool.Stop() + } +} + +// Benchmarks the speed of batch transaction insertion in case of multiple accounts. +func BenchmarkPoolMultiAccountBatchInsert(b *testing.B) { + // Generate a batch of transactions to enqueue into the pool + pool, _ := setupTxPool() + defer pool.Stop() + b.ReportAllocs() + batches := make(types.Transactions, b.N) + for i := 0; i < b.N; i++ { + key, _ := crypto.GenerateKey() + account := crypto.PubkeyToAddress(key.PublicKey) + pool.currentState.AddBalance(account, big.NewInt(1000000)) + tx := transaction(uint64(0), 100000, key) + batches[i] = tx + } + // Benchmark importing the transactions into the queue + b.ResetTimer() + for _, tx := range batches { + pool.AddRemotesSync([]*types.Transaction{tx}) + } +} diff --git a/core/types.go b/core/types.go new file mode 100644 index 0000000000..4d166b9b55 --- /dev/null +++ b/core/types.go @@ -0,0 +1,61 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" +) + +// Validator is an interface which defines the standard for block validation. It +// is only responsible for validating block contents, as the header validation is +// done by the specific consensus engines. +type Validator interface { + // ValidateBody validates the given block's content. + ValidateBody(block *types.Block) error + + // ValidateState validates the given statedb and optionally the receipts and + // gas used. + ValidateState(block *types.Block, state *state.StateDB, receipts types.Receipts, usedGas uint64) error +} + +// Prefetcher is an interface for pre-caching transaction signatures and state. +type Prefetcher interface { + // Prefetch processes the state changes according to the Ethereum rules by running + // the transaction messages using the statedb, but any changes are discarded. The + // only goal is to pre-cache transaction signatures and state trie nodes. + Prefetch(block *types.Block, statedb *state.StateDB, cfg vm.Config, interrupt *uint32) +} + +// Processor is an interface for processing blocks using a given initial state. +type Processor interface { + // Process processes the state changes according to the Ethereum rules by running + // the transaction messages using the statedb and applying any rewards to both + // the processor (coinbase) and any included uncles. + Process(block *types.Block, parent *types.Header, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error) +} diff --git a/core/types/access_list_tx.go b/core/types/access_list_tx.go new file mode 100644 index 0000000000..5e1aaec7e1 --- /dev/null +++ b/core/types/access_list_tx.go @@ -0,0 +1,125 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +//go:generate gencodec -type AccessTuple -out gen_access_tuple.go + +// AccessList is an EIP-2930 access list. +type AccessList []AccessTuple + +// AccessTuple is the element type of an access list. +type AccessTuple struct { + Address common.Address `json:"address" gencodec:"required"` + StorageKeys []common.Hash `json:"storageKeys" gencodec:"required"` +} + +// StorageKeys returns the total number of storage keys in the access list. +func (al AccessList) StorageKeys() int { + sum := 0 + for _, tuple := range al { + sum += len(tuple.StorageKeys) + } + return sum +} + +// AccessListTx is the data of EIP-2930 access list transactions. +type AccessListTx struct { + ChainID *big.Int // destination chain ID + Nonce uint64 // nonce of sender account + GasPrice *big.Int // wei per gas + Gas uint64 // gas limit + To *common.Address `rlp:"nil"` // nil means contract creation + Value *big.Int // wei amount + Data []byte // contract invocation input data + AccessList AccessList // EIP-2930 access list + V, R, S *big.Int // signature values +} + +// copy creates a deep copy of the transaction data and initializes all fields. +func (tx *AccessListTx) copy() TxData { + cpy := &AccessListTx{ + Nonce: tx.Nonce, + To: copyAddressPtr(tx.To), + Data: common.CopyBytes(tx.Data), + Gas: tx.Gas, + // These are copied below. + AccessList: make(AccessList, len(tx.AccessList)), + Value: new(big.Int), + ChainID: new(big.Int), + GasPrice: new(big.Int), + V: new(big.Int), + R: new(big.Int), + S: new(big.Int), + } + copy(cpy.AccessList, tx.AccessList) + if tx.Value != nil { + cpy.Value.Set(tx.Value) + } + if tx.ChainID != nil { + cpy.ChainID.Set(tx.ChainID) + } + if tx.GasPrice != nil { + cpy.GasPrice.Set(tx.GasPrice) + } + if tx.V != nil { + cpy.V.Set(tx.V) + } + if tx.R != nil { + cpy.R.Set(tx.R) + } + if tx.S != nil { + cpy.S.Set(tx.S) + } + return cpy +} + +// accessors for innerTx. +func (tx *AccessListTx) txType() byte { return AccessListTxType } +func (tx *AccessListTx) chainID() *big.Int { return tx.ChainID } +func (tx *AccessListTx) accessList() AccessList { return tx.AccessList } +func (tx *AccessListTx) data() []byte { return tx.Data } +func (tx *AccessListTx) gas() uint64 { return tx.Gas } +func (tx *AccessListTx) gasPrice() *big.Int { return tx.GasPrice } +func (tx *AccessListTx) gasTipCap() *big.Int { return tx.GasPrice } +func (tx *AccessListTx) gasFeeCap() *big.Int { return tx.GasPrice } +func (tx *AccessListTx) value() *big.Int { return tx.Value } +func (tx *AccessListTx) nonce() uint64 { return tx.Nonce } +func (tx *AccessListTx) to() *common.Address { return tx.To } + +func (tx *AccessListTx) rawSignatureValues() (v, r, s *big.Int) { + return tx.V, tx.R, tx.S +} + +func (tx *AccessListTx) setSignatureValues(chainID, v, r, s *big.Int) { + tx.ChainID, tx.V, tx.R, tx.S = chainID, v, r, s +} diff --git a/core/types/block.go b/core/types/block.go new file mode 100644 index 0000000000..58a122ba4b --- /dev/null +++ b/core/types/block.go @@ -0,0 +1,375 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package types contains data types related to Ethereum consensus. +package types + +import ( + "encoding/binary" + "io" + "math/big" + "reflect" + "sync/atomic" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/rlp" +) + +var ( + EmptyRootHash = common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421") + EmptyUncleHash = rlpHash([]*Header(nil)) +) + +// A BlockNonce is a 64-bit hash which proves (combined with the +// mix-hash) that a sufficient amount of computation has been carried +// out on a block. +type BlockNonce [8]byte + +// EncodeNonce converts the given integer to a block nonce. +func EncodeNonce(i uint64) BlockNonce { + var n BlockNonce + binary.BigEndian.PutUint64(n[:], i) + return n +} + +// Uint64 returns the integer value of a block nonce. +func (n BlockNonce) Uint64() uint64 { + return binary.BigEndian.Uint64(n[:]) +} + +// MarshalText encodes n as a hex string with 0x prefix. +func (n BlockNonce) MarshalText() ([]byte, error) { + return hexutil.Bytes(n[:]).MarshalText() +} + +// UnmarshalText implements encoding.TextUnmarshaler. +func (n *BlockNonce) UnmarshalText(input []byte) error { + return hexutil.UnmarshalFixedText("BlockNonce", input, n[:]) +} + +//go:generate gencodec -type Header -field-override headerMarshaling -out gen_header_json.go + +// Header represents a block header in the Ethereum blockchain. +type Header struct { + ParentHash common.Hash `json:"parentHash" gencodec:"required"` + UncleHash common.Hash `json:"sha3Uncles" gencodec:"required"` + Coinbase common.Address `json:"miner" gencodec:"required"` + Root common.Hash `json:"stateRoot" gencodec:"required"` + TxHash common.Hash `json:"transactionsRoot" gencodec:"required"` + ReceiptHash common.Hash `json:"receiptsRoot" gencodec:"required"` + Bloom Bloom `json:"logsBloom" gencodec:"required"` + Difficulty *big.Int `json:"difficulty" gencodec:"required"` + Number *big.Int `json:"number" gencodec:"required"` + GasLimit uint64 `json:"gasLimit" gencodec:"required"` + GasUsed uint64 `json:"gasUsed" gencodec:"required"` + Time uint64 `json:"timestamp" gencodec:"required"` + Extra []byte `json:"extraData" gencodec:"required"` + MixDigest common.Hash `json:"mixHash"` + Nonce BlockNonce `json:"nonce"` + + // BaseFee was added by EIP-1559 and is ignored in legacy headers. + BaseFee *big.Int `json:"baseFeePerGas" rlp:"optional"` + + // BlockGasCost was added by SubnetEVM and is ignored in legacy + // headers. + BlockGasCost *big.Int `json:"blockGasCost" rlp:"optional"` +} + +// field type overrides for gencodec +type headerMarshaling struct { + Difficulty *hexutil.Big + Number *hexutil.Big + GasLimit hexutil.Uint64 + GasUsed hexutil.Uint64 + Time hexutil.Uint64 + Extra hexutil.Bytes + BaseFee *hexutil.Big + BlockGasCost *hexutil.Big + Hash common.Hash `json:"hash"` // adds call to Hash() in MarshalJSON +} + +// Hash returns the block hash of the header, which is simply the keccak256 hash of its +// RLP encoding. +func (h *Header) Hash() common.Hash { + return rlpHash(h) +} + +var headerSize = common.StorageSize(reflect.TypeOf(Header{}).Size()) + +// Size returns the approximate memory used by all internal contents. It is used +// to approximate and limit the memory consumption of various caches. +func (h *Header) Size() common.StorageSize { + return headerSize + common.StorageSize(len(h.Extra)+(h.Difficulty.BitLen()+h.Number.BitLen())/8) +} + +// EmptyBody returns true if there is no additional 'body' to complete the header +// that is: no transactions and no uncles. +func (h *Header) EmptyBody() bool { + return h.TxHash == EmptyRootHash && h.UncleHash == EmptyUncleHash +} + +// EmptyReceipts returns true if there are no receipts for this header/block. +func (h *Header) EmptyReceipts() bool { + return h.ReceiptHash == EmptyRootHash +} + +// Body is a simple (mutable, non-safe) data container for storing and moving +// a block's data contents (transactions and uncles) together. +type Body struct { + Transactions []*Transaction + Uncles []*Header +} + +// Block represents an entire block in the Ethereum blockchain. +type Block struct { + header *Header + uncles []*Header + transactions Transactions + + // caches + hash atomic.Value + size atomic.Value + + // Td is used by package core to store the total difficulty + // of the chain up to and including the block. + td *big.Int +} + +// "external" block encoding. used for eth protocol, etc. +type extblock struct { + Header *Header + Txs []*Transaction + Uncles []*Header +} + +// NewBlock creates a new block. The input data is copied, +// changes to header and to the field values will not affect the +// block. +// +// The values of TxHash, UncleHash, ReceiptHash and Bloom in header +// are ignored and set to values derived from the given txs, uncles +// and receipts. +func NewBlock( + header *Header, txs []*Transaction, uncles []*Header, receipts []*Receipt, hasher TrieHasher, +) *Block { + b := &Block{header: CopyHeader(header), td: new(big.Int)} + + // TODO: panic if len(txs) != len(receipts) + if len(txs) == 0 { + b.header.TxHash = EmptyRootHash + } else { + b.header.TxHash = DeriveSha(Transactions(txs), hasher) + b.transactions = make(Transactions, len(txs)) + copy(b.transactions, txs) + } + + if len(receipts) == 0 { + b.header.ReceiptHash = EmptyRootHash + } else { + b.header.ReceiptHash = DeriveSha(Receipts(receipts), hasher) + b.header.Bloom = CreateBloom(receipts) + } + + if len(uncles) == 0 { + b.header.UncleHash = EmptyUncleHash + } else { + b.header.UncleHash = CalcUncleHash(uncles) + b.uncles = make([]*Header, len(uncles)) + for i := range uncles { + b.uncles[i] = CopyHeader(uncles[i]) + } + } + + return b +} + +// NewBlockWithHeader creates a block with the given header data. The +// header data is copied, changes to header and to the field values +// will not affect the block. +func NewBlockWithHeader(header *Header) *Block { + return &Block{header: CopyHeader(header)} +} + +// CopyHeader creates a deep copy of a block header to prevent side effects from +// modifying a header variable. +func CopyHeader(h *Header) *Header { + cpy := *h + if cpy.Difficulty = new(big.Int); h.Difficulty != nil { + cpy.Difficulty.Set(h.Difficulty) + } + if cpy.Number = new(big.Int); h.Number != nil { + cpy.Number.Set(h.Number) + } + if h.BaseFee != nil { + cpy.BaseFee = new(big.Int).Set(h.BaseFee) + } + if h.BlockGasCost != nil { + cpy.BlockGasCost = new(big.Int).Set(h.BlockGasCost) + } + if len(h.Extra) > 0 { + cpy.Extra = make([]byte, len(h.Extra)) + copy(cpy.Extra, h.Extra) + } + return &cpy +} + +// DecodeRLP decodes the Ethereum +func (b *Block) DecodeRLP(s *rlp.Stream) error { + var eb extblock + _, size, _ := s.Kind() + if err := s.Decode(&eb); err != nil { + return err + } + b.header, b.uncles, b.transactions = eb.Header, eb.Uncles, eb.Txs + b.size.Store(common.StorageSize(rlp.ListSize(size))) + return nil +} + +// EncodeRLP serializes b into the Ethereum RLP block format. +func (b *Block) EncodeRLP(w io.Writer) error { + return rlp.Encode(w, extblock{ + Header: b.header, + Txs: b.transactions, + Uncles: b.uncles, + }) +} + +// TODO: copies + +func (b *Block) Uncles() []*Header { return b.uncles } +func (b *Block) Transactions() Transactions { return b.transactions } + +func (b *Block) Transaction(hash common.Hash) *Transaction { + for _, transaction := range b.transactions { + if transaction.Hash() == hash { + return transaction + } + } + return nil +} + +func (b *Block) Number() *big.Int { return new(big.Int).Set(b.header.Number) } +func (b *Block) GasLimit() uint64 { return b.header.GasLimit } +func (b *Block) GasUsed() uint64 { return b.header.GasUsed } +func (b *Block) Difficulty() *big.Int { return new(big.Int).Set(b.header.Difficulty) } +func (b *Block) Time() uint64 { return b.header.Time } + +func (b *Block) NumberU64() uint64 { return b.header.Number.Uint64() } +func (b *Block) MixDigest() common.Hash { return b.header.MixDigest } +func (b *Block) Nonce() uint64 { return binary.BigEndian.Uint64(b.header.Nonce[:]) } +func (b *Block) Bloom() Bloom { return b.header.Bloom } +func (b *Block) Coinbase() common.Address { return b.header.Coinbase } +func (b *Block) Root() common.Hash { return b.header.Root } +func (b *Block) ParentHash() common.Hash { return b.header.ParentHash } +func (b *Block) TxHash() common.Hash { return b.header.TxHash } +func (b *Block) ReceiptHash() common.Hash { return b.header.ReceiptHash } +func (b *Block) UncleHash() common.Hash { return b.header.UncleHash } +func (b *Block) Extra() []byte { return common.CopyBytes(b.header.Extra) } + +func (b *Block) BaseFee() *big.Int { + if b.header.BaseFee == nil { + return nil + } + return new(big.Int).Set(b.header.BaseFee) +} + +func (b *Block) BlockGasCost() *big.Int { + if b.header.BlockGasCost == nil { + return nil + } + return new(big.Int).Set(b.header.BlockGasCost) +} + +func (b *Block) Header() *Header { return CopyHeader(b.header) } + +// Body returns the non-header content of the block. +func (b *Block) Body() *Body { return &Body{b.transactions, b.uncles} } + +// Size returns the true RLP encoded storage size of the block, either by encoding +// and returning it, or returning a previsouly cached value. +func (b *Block) Size() common.StorageSize { + if size := b.size.Load(); size != nil { + return size.(common.StorageSize) + } + c := writeCounter(0) + rlp.Encode(&c, b) + b.size.Store(common.StorageSize(c)) + return common.StorageSize(c) +} + +type writeCounter common.StorageSize + +func (c *writeCounter) Write(b []byte) (int, error) { + *c += writeCounter(len(b)) + return len(b), nil +} + +func CalcUncleHash(uncles []*Header) common.Hash { + if len(uncles) == 0 { + return EmptyUncleHash + } + return rlpHash(uncles) +} + +// WithSeal returns a new block with the data from b but the header replaced with +// the sealed one. +func (b *Block) WithSeal(header *Header) *Block { + cpy := *header + + return &Block{ + header: &cpy, + transactions: b.transactions, + uncles: b.uncles, + } +} + +// WithBody returns a new block with the given transaction and uncle contents. +func (b *Block) WithBody(transactions []*Transaction, uncles []*Header) *Block { + block := &Block{ + header: CopyHeader(b.header), + transactions: make([]*Transaction, len(transactions)), + uncles: make([]*Header, len(uncles)), + } + copy(block.transactions, transactions) + for i := range uncles { + block.uncles[i] = CopyHeader(uncles[i]) + } + return block +} + +// Hash returns the keccak256 hash of b's header. +// The hash is computed on the first call and cached thereafter. +func (b *Block) Hash() common.Hash { + if hash := b.hash.Load(); hash != nil { + return hash.(common.Hash) + } + v := b.header.Hash() + b.hash.Store(v) + return v +} + +type Blocks []*Block diff --git a/core/types/block_test.go b/core/types/block_test.go new file mode 100644 index 0000000000..901f0baf54 --- /dev/null +++ b/core/types/block_test.go @@ -0,0 +1,371 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "bytes" + "hash" + "math/big" + "reflect" + "testing" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" + "golang.org/x/crypto/sha3" +) + +func TestBlockEncoding(t *testing.T) { + blockEnc := common.FromHex("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") + var block Block + if err := rlp.DecodeBytes(blockEnc, &block); err != nil { + t.Fatal("decode error: ", err) + } + + check := func(f string, got, want interface{}) { + if !reflect.DeepEqual(got, want) { + t.Errorf("%s mismatch: got %v, want %v", f, got, want) + } + } + check("ParentHash", block.ParentHash(), common.HexToHash("0x83cafc574e1f51ba9dc0568fc617a08ea2429fb384059c972f13b19fa1c8dd55")) + check("UncleHash", block.UncleHash(), common.HexToHash("1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347")) + check("Coinbase", block.Coinbase(), common.HexToAddress("0x8888f1F195AFa192CfeE860698584c030f4c9dB1")) + check("Root", block.Root(), common.HexToHash("0xef1552a40b7165c3cd773806b9e0c165b75356e0314bf0706f279c729f51e017")) + check("TxHash", block.TxHash(), common.HexToHash("0x5fe50b260da6308036625b850b5d6ced6d0a9f814c0688bc91ffb7b7a3a54b67")) + check("ReceiptHash", block.ReceiptHash(), common.HexToHash("0xbc37d79753ad738a6dac4921e57392f145d8887476de3f783dfa7edae9283e52")) + check("Bloom", block.Bloom(), BytesToBloom(common.FromHex("00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"))) + check("Difficulty", block.Difficulty(), big.NewInt(131072)) + check("BlockNumber", block.NumberU64(), uint64(1)) + check("GasLimit", block.GasLimit(), uint64(3141592)) + check("GasUsed", block.GasUsed(), uint64(21000)) + check("Time", block.Time(), uint64(1426516743)) + check("Extra", block.Extra(), common.FromHex("")) + check("MixDigest", block.MixDigest(), common.HexToHash("0xbd4472abb6659ebe3ee06ee4d7b72a00a9f4d001caca51342001075469aff498")) + check("Nonce", block.Nonce(), uint64(11617697748499542468)) + check("BaseFee", block.BaseFee(), (*big.Int)(nil)) + check("BlockGasCost", block.BlockGasCost(), (*big.Int)(nil)) + + check("Size", block.Size(), common.StorageSize(len(blockEnc))) + check("BlockHash", block.Hash(), common.HexToHash("0x0a5843ac1cb04865017cb35a57b50b07084e5fcee39b5acadade33149f4fff9e")) + + txHash := common.HexToHash("0x77b19baa4de67e45a7b26e4a220bccdbb6731885aa9927064e239ca232023215") + check("len(Transactions)", len(block.Transactions()), 1) + check("Transactions[0].Hash", block.Transactions()[0].Hash(), txHash) + ourBlockEnc, err := rlp.EncodeToBytes(&block) + if err != nil { + t.Fatal("encode error: ", err) + } + if !bytes.Equal(ourBlockEnc, blockEnc) { + t.Errorf("encoded block mismatch:\ngot: %x\nwant: %x", ourBlockEnc, blockEnc) + } +} + +func TestEIP1559BlockEncoding(t *testing.T) { + blockEnc := common.FromHex("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") + var block Block + if err := rlp.DecodeBytes(blockEnc, &block); err != nil { + t.Fatal("decode error: ", err) + } + + check := func(f string, got, want interface{}) { + if !reflect.DeepEqual(got, want) { + t.Errorf("%s mismatch: got %v, want %v", f, got, want) + } + } + + check("Difficulty", block.Difficulty(), big.NewInt(131072)) + check("GasLimit", block.GasLimit(), uint64(3141592)) + check("GasUsed", block.GasUsed(), uint64(21000)) + check("Coinbase", block.Coinbase(), common.HexToAddress("8888f1f195afa192cfee860698584c030f4c9db1")) + check("MixDigest", block.MixDigest(), common.HexToHash("bd4472abb6659ebe3ee06ee4d7b72a00a9f4d001caca51342001075469aff498")) + check("Root", block.Root(), common.HexToHash("ef1552a40b7165c3cd773806b9e0c165b75356e0314bf0706f279c729f51e017")) + check("Hash", block.Hash(), common.HexToHash("c7252048cd273fe0dac09650027d07f0e3da4ee0675ebbb26627cea92729c372")) + check("Nonce", block.Nonce(), uint64(0xa13a5a8c8f2bb1c4)) + check("Time", block.Time(), uint64(1426516743)) + check("Size", block.Size(), common.StorageSize(len(blockEnc))) + check("BaseFee", block.BaseFee(), new(big.Int).SetUint64(1000000000)) + check("BlockGasCost", block.BlockGasCost(), (*big.Int)(nil)) + + tx1 := NewTransaction(0, common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87"), big.NewInt(10), 50000, big.NewInt(10), nil) + tx1, _ = tx1.WithSignature(HomesteadSigner{}, common.Hex2Bytes("9bea4c4daac7c7c52e093e6a4c35dbbcf8856f1af7b059ba20253e70848d094f8a8fae537ce25ed8cb5af9adac3f141af69bd515bd2ba031522df09b97dd72b100")) + + addr := common.HexToAddress("0x0000000000000000000000000000000000000001") + accesses := AccessList{AccessTuple{ + Address: addr, + StorageKeys: []common.Hash{ + {0}, + }, + }} + to := common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87") + txdata := &DynamicFeeTx{ + ChainID: big.NewInt(1), + Nonce: 0, + To: &to, + Gas: 123457, + GasFeeCap: new(big.Int).Set(block.BaseFee()), + GasTipCap: big.NewInt(0), + AccessList: accesses, + Data: []byte{}, + } + tx2 := NewTx(txdata) + tx2, err := tx2.WithSignature(LatestSignerForChainID(big.NewInt(1)), common.Hex2Bytes("fe38ca4e44a30002ac54af7cf922a6ac2ba11b7d22f548e8ecb3f51f41cb31b06de6a5cbae13c0c856e33acf021b51819636cfc009d39eafb9f606d546e305a800")) + if err != nil { + t.Fatal("invalid signature error: ", err) + } + + check("len(Transactions)", len(block.Transactions()), 2) + check("Transactions[0].Hash", block.Transactions()[0].Hash(), tx1.Hash()) + check("Transactions[1].Hash", block.Transactions()[1].Hash(), tx2.Hash()) + check("Transactions[1].Type", block.Transactions()[1].Type(), tx2.Type()) + ourBlockEnc, err := rlp.EncodeToBytes(&block) + if err != nil { + t.Fatal("encode error: ", err) + } + if !bytes.Equal(ourBlockEnc, blockEnc) { + t.Errorf("encoded block mismatch:\ngot: %x\nwant: %x", ourBlockEnc, blockEnc) + } +} + +func TestEIP2718BlockEncoding(t *testing.T) { + blockEnc := common.FromHex("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") + var block Block + if err := rlp.DecodeBytes(blockEnc, &block); err != nil { + t.Fatal("decode error: ", err) + } + + check := func(f string, got, want interface{}) { + if !reflect.DeepEqual(got, want) { + t.Errorf("%s mismatch: got %v, want %v", f, got, want) + } + } + check("Difficulty", block.Difficulty(), big.NewInt(131072)) + check("GasLimit", block.GasLimit(), uint64(3141592)) + check("GasUsed", block.GasUsed(), uint64(42000)) + check("Coinbase", block.Coinbase(), common.HexToAddress("8888f1f195afa192cfee860698584c030f4c9db1")) + check("MixDigest", block.MixDigest(), common.HexToHash("bd4472abb6659ebe3ee06ee4d7b72a00a9f4d001caca51342001075469aff498")) + check("Root", block.Root(), common.HexToHash("ef1552a40b7165c3cd773806b9e0c165b75356e0314bf0706f279c729f51e017")) + check("Nonce", block.Nonce(), uint64(0xa13a5a8c8f2bb1c4)) + check("Time", block.Time(), uint64(1426516743)) + check("Size", block.Size(), common.StorageSize(len(blockEnc))) + check("BaseFee", block.BaseFee(), (*big.Int)(nil)) + check("BlockGasCost", block.BlockGasCost(), (*big.Int)(nil)) + + // Create legacy tx. + to := common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87") + tx1 := NewTx(&LegacyTx{ + Nonce: 0, + To: &to, + Value: big.NewInt(10), + Gas: 50000, + GasPrice: big.NewInt(10), + }) + sig := common.Hex2Bytes("9bea4c4daac7c7c52e093e6a4c35dbbcf8856f1af7b059ba20253e70848d094f8a8fae537ce25ed8cb5af9adac3f141af69bd515bd2ba031522df09b97dd72b100") + tx1, _ = tx1.WithSignature(HomesteadSigner{}, sig) + + // Create ACL tx. + addr := common.HexToAddress("0x0000000000000000000000000000000000000001") + tx2 := NewTx(&AccessListTx{ + ChainID: big.NewInt(1), + Nonce: 0, + To: &to, + Gas: 123457, + GasPrice: big.NewInt(10), + AccessList: AccessList{{Address: addr, StorageKeys: []common.Hash{{0}}}}, + }) + sig2 := common.Hex2Bytes("3dbacc8d0259f2508625e97fdfc57cd85fdd16e5821bc2c10bdd1a52649e8335476e10695b183a87b0aa292a7f4b78ef0c3fbe62aa2c42c84e1d9c3da159ef1401") + tx2, _ = tx2.WithSignature(NewEIP2930Signer(big.NewInt(1)), sig2) + + check("len(Transactions)", len(block.Transactions()), 2) + check("Transactions[0].Hash", block.Transactions()[0].Hash(), tx1.Hash()) + check("Transactions[1].Hash", block.Transactions()[1].Hash(), tx2.Hash()) + check("Transactions[1].Type()", block.Transactions()[1].Type(), uint8(AccessListTxType)) + + ourBlockEnc, err := rlp.EncodeToBytes(&block) + if err != nil { + t.Fatal("encode error: ", err) + } + if !bytes.Equal(ourBlockEnc, blockEnc) { + t.Errorf("encoded block mismatch:\ngot: %x\nwant: %x", ourBlockEnc, blockEnc) + } +} + +func TestUncleHash(t *testing.T) { + uncles := make([]*Header, 0) + h := CalcUncleHash(uncles) + exp := common.HexToHash("1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347") + if h != exp { + t.Fatalf("empty uncle hash is wrong, got %x != %x", h, exp) + } +} + +var benchBuffer = bytes.NewBuffer(make([]byte, 0, 32000)) + +func BenchmarkEncodeBlock(b *testing.B) { + block := makeBenchBlock() + b.ResetTimer() + + for i := 0; i < b.N; i++ { + benchBuffer.Reset() + if err := rlp.Encode(benchBuffer, block); err != nil { + b.Fatal(err) + } + } +} + +// testHasher is the helper tool for transaction/receipt list hashing. +// The original hasher is trie, in order to get rid of import cycle, +// use the testing hasher instead. +type testHasher struct { + hasher hash.Hash +} + +func newHasher() *testHasher { + return &testHasher{hasher: sha3.NewLegacyKeccak256()} +} + +func (h *testHasher) Reset() { + h.hasher.Reset() +} + +func (h *testHasher) Update(key, val []byte) { + h.hasher.Write(key) + h.hasher.Write(val) +} + +func (h *testHasher) Hash() common.Hash { + return common.BytesToHash(h.hasher.Sum(nil)) +} + +func makeBenchBlock() *Block { + var ( + key, _ = crypto.GenerateKey() + txs = make([]*Transaction, 70) + receipts = make([]*Receipt, len(txs)) + signer = LatestSigner(params.TestChainConfig) + uncles = make([]*Header, 3) + ) + header := &Header{ + Difficulty: math.BigPow(11, 11), + Number: math.BigPow(2, 9), + GasLimit: 12345678, + GasUsed: 1476322, + Time: 9876543, + Extra: []byte("coolest block on chain"), + } + for i := range txs { + amount := math.BigPow(2, int64(i)) + price := big.NewInt(300000) + data := make([]byte, 100) + tx := NewTransaction(uint64(i), common.Address{}, amount, 123457, price, data) + signedTx, err := SignTx(tx, signer, key) + if err != nil { + panic(err) + } + txs[i] = signedTx + receipts[i] = NewReceipt(make([]byte, 32), false, tx.Gas()) + } + for i := range uncles { + uncles[i] = &Header{ + Difficulty: math.BigPow(11, 11), + Number: math.BigPow(2, 9), + GasLimit: 12345678, + GasUsed: 1476322, + Time: 9876543, + Extra: []byte("benchmark uncle"), + } + } + return NewBlock(header, txs, uncles, receipts, newHasher()) +} + +func TestSubnetEVMBlockEncoding(t *testing.T) { + blockEnc := common.FromHex("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") + + var block Block + if err := rlp.DecodeBytes(blockEnc, &block); err != nil { + t.Fatal("decode error: ", err) + } + + check := func(f string, got, want interface{}) { + if !reflect.DeepEqual(got, want) { + t.Errorf("%s mismatch: got %v, want %v", f, got, want) + } + } + + check("Difficulty", block.Difficulty(), big.NewInt(131072)) + check("GasLimit", block.GasLimit(), uint64(3141592)) + check("GasUsed", block.GasUsed(), uint64(21000)) + check("Coinbase", block.Coinbase(), common.HexToAddress("8888f1f195afa192cfee860698584c030f4c9db1")) + check("MixDigest", block.MixDigest(), common.HexToHash("bd4472abb6659ebe3ee06ee4d7b72a00a9f4d001caca51342001075469aff498")) + check("Root", block.Root(), common.HexToHash("ef1552a40b7165c3cd773806b9e0c165b75356e0314bf0706f279c729f51e017")) + check("Hash", block.Hash(), common.HexToHash("0x06206d4ff804e93b36a8447a12a47653b07fd18115a05956c5ed8817f0b11eb9")) + check("Nonce", block.Nonce(), uint64(0xa13a5a8c8f2bb1c4)) + check("Time", block.Time(), uint64(1426516743)) + check("Size", block.Size(), common.StorageSize(len(blockEnc))) + check("BaseFee", block.BaseFee(), big.NewInt(1_000_000_000)) + check("BlockGasCost", block.BlockGasCost(), big.NewInt(100_000)) + + tx1 := NewTransaction(0, common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87"), big.NewInt(10), 50000, big.NewInt(10), nil) + tx1, _ = tx1.WithSignature(HomesteadSigner{}, common.Hex2Bytes("9bea4c4daac7c7c52e093e6a4c35dbbcf8856f1af7b059ba20253e70848d094f8a8fae537ce25ed8cb5af9adac3f141af69bd515bd2ba031522df09b97dd72b100")) + + addr := common.HexToAddress("0x0000000000000000000000000000000000000001") + accesses := AccessList{AccessTuple{ + Address: addr, + StorageKeys: []common.Hash{ + {0}, + }, + }} + to := common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87") + txdata := &DynamicFeeTx{ + ChainID: big.NewInt(1), + Nonce: 0, + To: &to, + Gas: 123457, + GasFeeCap: new(big.Int).Set(block.BaseFee()), + GasTipCap: big.NewInt(0), + AccessList: accesses, + Data: []byte{}, + } + tx2 := NewTx(txdata) + tx2, err := tx2.WithSignature(LatestSignerForChainID(big.NewInt(1)), common.Hex2Bytes("fe38ca4e44a30002ac54af7cf922a6ac2ba11b7d22f548e8ecb3f51f41cb31b06de6a5cbae13c0c856e33acf021b51819636cfc009d39eafb9f606d546e305a800")) + if err != nil { + t.Fatal("invalid signature error: ", err) + } + + check("len(Transactions)", len(block.Transactions()), 2) + check("Transactions[0].Hash", block.Transactions()[0].Hash(), tx1.Hash()) + check("Transactions[1].Hash", block.Transactions()[1].Hash(), tx2.Hash()) + check("Transactions[1].Type", block.Transactions()[1].Type(), tx2.Type()) + ourBlockEnc, err := rlp.EncodeToBytes(&block) + if err != nil { + t.Fatal("encode error: ", err) + } + if !bytes.Equal(ourBlockEnc, blockEnc) { + t.Errorf("encoded block mismatch:\ngot: %x\nwant: %x", ourBlockEnc, blockEnc) + } +} diff --git a/core/types/bloom9.go b/core/types/bloom9.go new file mode 100644 index 0000000000..872fa85fa2 --- /dev/null +++ b/core/types/bloom9.go @@ -0,0 +1,170 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "encoding/binary" + "fmt" + "math/big" + + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" +) + +type bytesBacked interface { + Bytes() []byte +} + +const ( + // BloomByteLength represents the number of bytes used in a header log bloom. + BloomByteLength = 256 + + // BloomBitLength represents the number of bits used in a header log bloom. + BloomBitLength = 8 * BloomByteLength +) + +// Bloom represents a 2048 bit bloom filter. +type Bloom [BloomByteLength]byte + +// BytesToBloom converts a byte slice to a bloom filter. +// It panics if b is not of suitable size. +func BytesToBloom(b []byte) Bloom { + var bloom Bloom + bloom.SetBytes(b) + return bloom +} + +// SetBytes sets the content of b to the given bytes. +// It panics if d is not of suitable size. +func (b *Bloom) SetBytes(d []byte) { + if len(b) < len(d) { + panic(fmt.Sprintf("bloom bytes too big %d %d", len(b), len(d))) + } + copy(b[BloomByteLength-len(d):], d) +} + +// Add adds d to the filter. Future calls of Test(d) will return true. +func (b *Bloom) Add(d []byte) { + b.add(d, make([]byte, 6)) +} + +// add is internal version of Add, which takes a scratch buffer for reuse (needs to be at least 6 bytes) +func (b *Bloom) add(d []byte, buf []byte) { + i1, v1, i2, v2, i3, v3 := bloomValues(d, buf) + b[i1] |= v1 + b[i2] |= v2 + b[i3] |= v3 +} + +// Big converts b to a big integer. +// Note: Converting a bloom filter to a big.Int and then calling GetBytes +// does not return the same bytes, since big.Int will trim leading zeroes +func (b Bloom) Big() *big.Int { + return new(big.Int).SetBytes(b[:]) +} + +// Bytes returns the backing byte slice of the bloom +func (b Bloom) Bytes() []byte { + return b[:] +} + +// Test checks if the given topic is present in the bloom filter +func (b Bloom) Test(topic []byte) bool { + i1, v1, i2, v2, i3, v3 := bloomValues(topic, make([]byte, 6)) + return v1 == v1&b[i1] && + v2 == v2&b[i2] && + v3 == v3&b[i3] +} + +// MarshalText encodes b as a hex string with 0x prefix. +func (b Bloom) MarshalText() ([]byte, error) { + return hexutil.Bytes(b[:]).MarshalText() +} + +// UnmarshalText b as a hex string with 0x prefix. +func (b *Bloom) UnmarshalText(input []byte) error { + return hexutil.UnmarshalFixedText("Bloom", input, b[:]) +} + +// CreateBloom creates a bloom filter out of the give Receipts (+Logs) +func CreateBloom(receipts Receipts) Bloom { + buf := make([]byte, 6) + var bin Bloom + for _, receipt := range receipts { + for _, log := range receipt.Logs { + bin.add(log.Address.Bytes(), buf) + for _, b := range log.Topics { + bin.add(b[:], buf) + } + } + } + return bin +} + +// LogsBloom returns the bloom bytes for the given logs +func LogsBloom(logs []*Log) []byte { + buf := make([]byte, 6) + var bin Bloom + for _, log := range logs { + bin.add(log.Address.Bytes(), buf) + for _, b := range log.Topics { + bin.add(b[:], buf) + } + } + return bin[:] +} + +// Bloom9 returns the bloom filter for the given data +func Bloom9(data []byte) []byte { + var b Bloom + b.SetBytes(data) + return b.Bytes() +} + +// bloomValues returns the bytes (index-value pairs) to set for the given data +func bloomValues(data []byte, hashbuf []byte) (uint, byte, uint, byte, uint, byte) { + sha := hasherPool.Get().(crypto.KeccakState) + sha.Reset() + sha.Write(data) + sha.Read(hashbuf) + hasherPool.Put(sha) + // The actual bits to flip + v1 := byte(1 << (hashbuf[1] & 0x7)) + v2 := byte(1 << (hashbuf[3] & 0x7)) + v3 := byte(1 << (hashbuf[5] & 0x7)) + // The indices for the bytes to OR in + i1 := BloomByteLength - uint((binary.BigEndian.Uint16(hashbuf)&0x7ff)>>3) - 1 + i2 := BloomByteLength - uint((binary.BigEndian.Uint16(hashbuf[2:])&0x7ff)>>3) - 1 + i3 := BloomByteLength - uint((binary.BigEndian.Uint16(hashbuf[4:])&0x7ff)>>3) - 1 + + return i1, v1, i2, v2, i3, v3 +} + +// BloomLookup is a convenience-method to check presence int he bloom filter +func BloomLookup(bin Bloom, topic bytesBacked) bool { + return bin.Test(topic.Bytes()) +} diff --git a/core/types/bloom9_test.go b/core/types/bloom9_test.go new file mode 100644 index 0000000000..85edb990a4 --- /dev/null +++ b/core/types/bloom9_test.go @@ -0,0 +1,166 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "fmt" + "math/big" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func TestBloom(t *testing.T) { + positive := []string{ + "testtest", + "test", + "hallo", + "other", + } + negative := []string{ + "tes", + "lo", + } + + var bloom Bloom + for _, data := range positive { + bloom.Add([]byte(data)) + } + + for _, data := range positive { + if !bloom.Test([]byte(data)) { + t.Error("expected", data, "to test true") + } + } + for _, data := range negative { + if bloom.Test([]byte(data)) { + t.Error("did not expect", data, "to test true") + } + } +} + +// TestBloomExtensively does some more thorough tests +func TestBloomExtensively(t *testing.T) { + var exp = common.HexToHash("c8d3ca65cdb4874300a9e39475508f23ed6da09fdbc487f89a2dcf50b09eb263") + var b Bloom + // Add 100 "random" things + for i := 0; i < 100; i++ { + data := fmt.Sprintf("xxxxxxxxxx data %d yyyyyyyyyyyyyy", i) + b.Add([]byte(data)) + //b.Add(new(big.Int).SetBytes([]byte(data))) + } + got := crypto.Keccak256Hash(b.Bytes()) + if got != exp { + t.Errorf("Got %x, exp %x", got, exp) + } + var b2 Bloom + b2.SetBytes(b.Bytes()) + got2 := crypto.Keccak256Hash(b2.Bytes()) + if got != got2 { + t.Errorf("Got %x, exp %x", got, got2) + } +} + +func BenchmarkBloom9(b *testing.B) { + test := []byte("testestestest") + for i := 0; i < b.N; i++ { + Bloom9(test) + } +} + +func BenchmarkBloom9Lookup(b *testing.B) { + toTest := []byte("testtest") + bloom := new(Bloom) + for i := 0; i < b.N; i++ { + bloom.Test(toTest) + } +} + +func BenchmarkCreateBloom(b *testing.B) { + + var txs = Transactions{ + NewContractCreation(1, big.NewInt(1), 1, big.NewInt(1), nil), + NewTransaction(2, common.HexToAddress("0x2"), big.NewInt(2), 2, big.NewInt(2), nil), + } + var rSmall = Receipts{ + &Receipt{ + Status: ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*Log{ + {Address: common.BytesToAddress([]byte{0x11})}, + {Address: common.BytesToAddress([]byte{0x01, 0x11})}, + }, + TxHash: txs[0].Hash(), + ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}), + GasUsed: 1, + }, + &Receipt{ + PostState: common.Hash{2}.Bytes(), + CumulativeGasUsed: 3, + Logs: []*Log{ + {Address: common.BytesToAddress([]byte{0x22})}, + {Address: common.BytesToAddress([]byte{0x02, 0x22})}, + }, + TxHash: txs[1].Hash(), + ContractAddress: common.BytesToAddress([]byte{0x02, 0x22, 0x22}), + GasUsed: 2, + }, + } + + var rLarge = make(Receipts, 200) + // Fill it with 200 receipts x 2 logs + for i := 0; i < 200; i += 2 { + copy(rLarge[i:], rSmall) + } + b.Run("small", func(b *testing.B) { + b.ReportAllocs() + var bl Bloom + for i := 0; i < b.N; i++ { + bl = CreateBloom(rSmall) + } + b.StopTimer() + var exp = common.HexToHash("c384c56ece49458a427c67b90fefe979ebf7104795be65dc398b280f24104949") + got := crypto.Keccak256Hash(bl.Bytes()) + if got != exp { + b.Errorf("Got %x, exp %x", got, exp) + } + }) + b.Run("large", func(b *testing.B) { + b.ReportAllocs() + var bl Bloom + for i := 0; i < b.N; i++ { + bl = CreateBloom(rLarge) + } + b.StopTimer() + var exp = common.HexToHash("c384c56ece49458a427c67b90fefe979ebf7104795be65dc398b280f24104949") + got := crypto.Keccak256Hash(bl.Bytes()) + if got != exp { + b.Errorf("Got %x, exp %x", got, exp) + } + }) +} diff --git a/core/types/dynamic_fee_tx.go b/core/types/dynamic_fee_tx.go new file mode 100644 index 0000000000..7e288210ca --- /dev/null +++ b/core/types/dynamic_fee_tx.go @@ -0,0 +1,113 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +type DynamicFeeTx struct { + ChainID *big.Int + Nonce uint64 + GasTipCap *big.Int + GasFeeCap *big.Int + Gas uint64 + To *common.Address `rlp:"nil"` // nil means contract creation + Value *big.Int + Data []byte + AccessList AccessList + + // Signature values + V *big.Int `json:"v" gencodec:"required"` + R *big.Int `json:"r" gencodec:"required"` + S *big.Int `json:"s" gencodec:"required"` +} + +// copy creates a deep copy of the transaction data and initializes all fields. +func (tx *DynamicFeeTx) copy() TxData { + cpy := &DynamicFeeTx{ + Nonce: tx.Nonce, + To: copyAddressPtr(tx.To), + Data: common.CopyBytes(tx.Data), + Gas: tx.Gas, + // These are copied below. + AccessList: make(AccessList, len(tx.AccessList)), + Value: new(big.Int), + ChainID: new(big.Int), + GasTipCap: new(big.Int), + GasFeeCap: new(big.Int), + V: new(big.Int), + R: new(big.Int), + S: new(big.Int), + } + copy(cpy.AccessList, tx.AccessList) + if tx.Value != nil { + cpy.Value.Set(tx.Value) + } + if tx.ChainID != nil { + cpy.ChainID.Set(tx.ChainID) + } + if tx.GasTipCap != nil { + cpy.GasTipCap.Set(tx.GasTipCap) + } + if tx.GasFeeCap != nil { + cpy.GasFeeCap.Set(tx.GasFeeCap) + } + if tx.V != nil { + cpy.V.Set(tx.V) + } + if tx.R != nil { + cpy.R.Set(tx.R) + } + if tx.S != nil { + cpy.S.Set(tx.S) + } + return cpy +} + +// accessors for innerTx. +func (tx *DynamicFeeTx) txType() byte { return DynamicFeeTxType } +func (tx *DynamicFeeTx) chainID() *big.Int { return tx.ChainID } +func (tx *DynamicFeeTx) accessList() AccessList { return tx.AccessList } +func (tx *DynamicFeeTx) data() []byte { return tx.Data } +func (tx *DynamicFeeTx) gas() uint64 { return tx.Gas } +func (tx *DynamicFeeTx) gasFeeCap() *big.Int { return tx.GasFeeCap } +func (tx *DynamicFeeTx) gasTipCap() *big.Int { return tx.GasTipCap } +func (tx *DynamicFeeTx) gasPrice() *big.Int { return tx.GasFeeCap } +func (tx *DynamicFeeTx) value() *big.Int { return tx.Value } +func (tx *DynamicFeeTx) nonce() uint64 { return tx.Nonce } +func (tx *DynamicFeeTx) to() *common.Address { return tx.To } + +func (tx *DynamicFeeTx) rawSignatureValues() (v, r, s *big.Int) { + return tx.V, tx.R, tx.S +} + +func (tx *DynamicFeeTx) setSignatureValues(chainID, v, r, s *big.Int) { + tx.ChainID, tx.V, tx.R, tx.S = chainID, v, r, s +} diff --git a/core/types/gen_access_tuple.go b/core/types/gen_access_tuple.go new file mode 100644 index 0000000000..fc48a84cc0 --- /dev/null +++ b/core/types/gen_access_tuple.go @@ -0,0 +1,43 @@ +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. + +package types + +import ( + "encoding/json" + "errors" + + "github.com/ethereum/go-ethereum/common" +) + +// MarshalJSON marshals as JSON. +func (a AccessTuple) MarshalJSON() ([]byte, error) { + type AccessTuple struct { + Address common.Address `json:"address" gencodec:"required"` + StorageKeys []common.Hash `json:"storageKeys" gencodec:"required"` + } + var enc AccessTuple + enc.Address = a.Address + enc.StorageKeys = a.StorageKeys + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (a *AccessTuple) UnmarshalJSON(input []byte) error { + type AccessTuple struct { + Address *common.Address `json:"address" gencodec:"required"` + StorageKeys []common.Hash `json:"storageKeys" gencodec:"required"` + } + var dec AccessTuple + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + if dec.Address == nil { + return errors.New("missing required field 'address' for AccessTuple") + } + a.Address = *dec.Address + if dec.StorageKeys == nil { + return errors.New("missing required field 'storageKeys' for AccessTuple") + } + a.StorageKeys = dec.StorageKeys + return nil +} diff --git a/core/types/gen_header_json.go b/core/types/gen_header_json.go new file mode 100644 index 0000000000..b06a3b06a5 --- /dev/null +++ b/core/types/gen_header_json.go @@ -0,0 +1,150 @@ +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. + +package types + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +var _ = (*headerMarshaling)(nil) + +// MarshalJSON marshals as JSON. +func (h Header) MarshalJSON() ([]byte, error) { + type Header struct { + ParentHash common.Hash `json:"parentHash" gencodec:"required"` + UncleHash common.Hash `json:"sha3Uncles" gencodec:"required"` + Coinbase common.Address `json:"miner" gencodec:"required"` + Root common.Hash `json:"stateRoot" gencodec:"required"` + TxHash common.Hash `json:"transactionsRoot" gencodec:"required"` + ReceiptHash common.Hash `json:"receiptsRoot" gencodec:"required"` + Bloom Bloom `json:"logsBloom" gencodec:"required"` + Difficulty *hexutil.Big `json:"difficulty" gencodec:"required"` + Number *hexutil.Big `json:"number" gencodec:"required"` + GasLimit hexutil.Uint64 `json:"gasLimit" gencodec:"required"` + GasUsed hexutil.Uint64 `json:"gasUsed" gencodec:"required"` + Time hexutil.Uint64 `json:"timestamp" gencodec:"required"` + Extra hexutil.Bytes `json:"extraData" gencodec:"required"` + MixDigest common.Hash `json:"mixHash"` + Nonce BlockNonce `json:"nonce"` + BaseFee *hexutil.Big `json:"baseFeePerGas" rlp:"optional"` + BlockGasCost *hexutil.Big `json:"blockGasCost" rlp:"optional"` + Hash common.Hash `json:"hash"` + } + var enc Header + enc.ParentHash = h.ParentHash + enc.UncleHash = h.UncleHash + enc.Coinbase = h.Coinbase + enc.Root = h.Root + enc.TxHash = h.TxHash + enc.ReceiptHash = h.ReceiptHash + enc.Bloom = h.Bloom + enc.Difficulty = (*hexutil.Big)(h.Difficulty) + enc.Number = (*hexutil.Big)(h.Number) + enc.GasLimit = hexutil.Uint64(h.GasLimit) + enc.GasUsed = hexutil.Uint64(h.GasUsed) + enc.Time = hexutil.Uint64(h.Time) + enc.Extra = h.Extra + enc.MixDigest = h.MixDigest + enc.Nonce = h.Nonce + enc.BaseFee = (*hexutil.Big)(h.BaseFee) + enc.BlockGasCost = (*hexutil.Big)(h.BlockGasCost) + enc.Hash = h.Hash() + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (h *Header) UnmarshalJSON(input []byte) error { + type Header struct { + ParentHash *common.Hash `json:"parentHash" gencodec:"required"` + UncleHash *common.Hash `json:"sha3Uncles" gencodec:"required"` + Coinbase *common.Address `json:"miner" gencodec:"required"` + Root *common.Hash `json:"stateRoot" gencodec:"required"` + TxHash *common.Hash `json:"transactionsRoot" gencodec:"required"` + ReceiptHash *common.Hash `json:"receiptsRoot" gencodec:"required"` + Bloom *Bloom `json:"logsBloom" gencodec:"required"` + Difficulty *hexutil.Big `json:"difficulty" gencodec:"required"` + Number *hexutil.Big `json:"number" gencodec:"required"` + GasLimit *hexutil.Uint64 `json:"gasLimit" gencodec:"required"` + GasUsed *hexutil.Uint64 `json:"gasUsed" gencodec:"required"` + Time *hexutil.Uint64 `json:"timestamp" gencodec:"required"` + Extra *hexutil.Bytes `json:"extraData" gencodec:"required"` + MixDigest *common.Hash `json:"mixHash"` + Nonce *BlockNonce `json:"nonce"` + BaseFee *hexutil.Big `json:"baseFeePerGas" rlp:"optional"` + BlockGasCost *hexutil.Big `json:"blockGasCost" rlp:"optional"` + } + var dec Header + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + if dec.ParentHash == nil { + return errors.New("missing required field 'parentHash' for Header") + } + h.ParentHash = *dec.ParentHash + if dec.UncleHash == nil { + return errors.New("missing required field 'sha3Uncles' for Header") + } + h.UncleHash = *dec.UncleHash + if dec.Coinbase == nil { + return errors.New("missing required field 'miner' for Header") + } + h.Coinbase = *dec.Coinbase + if dec.Root == nil { + return errors.New("missing required field 'stateRoot' for Header") + } + h.Root = *dec.Root + if dec.TxHash == nil { + return errors.New("missing required field 'transactionsRoot' for Header") + } + h.TxHash = *dec.TxHash + if dec.ReceiptHash == nil { + return errors.New("missing required field 'receiptsRoot' for Header") + } + h.ReceiptHash = *dec.ReceiptHash + if dec.Bloom == nil { + return errors.New("missing required field 'logsBloom' for Header") + } + h.Bloom = *dec.Bloom + if dec.Difficulty == nil { + return errors.New("missing required field 'difficulty' for Header") + } + h.Difficulty = (*big.Int)(dec.Difficulty) + if dec.Number == nil { + return errors.New("missing required field 'number' for Header") + } + h.Number = (*big.Int)(dec.Number) + if dec.GasLimit == nil { + return errors.New("missing required field 'gasLimit' for Header") + } + h.GasLimit = uint64(*dec.GasLimit) + if dec.GasUsed == nil { + return errors.New("missing required field 'gasUsed' for Header") + } + h.GasUsed = uint64(*dec.GasUsed) + if dec.Time == nil { + return errors.New("missing required field 'timestamp' for Header") + } + h.Time = uint64(*dec.Time) + if dec.Extra == nil { + return errors.New("missing required field 'extraData' for Header") + } + h.Extra = *dec.Extra + if dec.MixDigest != nil { + h.MixDigest = *dec.MixDigest + } + if dec.Nonce != nil { + h.Nonce = *dec.Nonce + } + if dec.BaseFee != nil { + h.BaseFee = (*big.Int)(dec.BaseFee) + } + if dec.BlockGasCost != nil { + h.BlockGasCost = (*big.Int)(dec.BlockGasCost) + } + return nil +} diff --git a/core/types/gen_log_json.go b/core/types/gen_log_json.go new file mode 100644 index 0000000000..90e1c14d90 --- /dev/null +++ b/core/types/gen_log_json.go @@ -0,0 +1,90 @@ +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. + +package types + +import ( + "encoding/json" + "errors" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +var _ = (*logMarshaling)(nil) + +// MarshalJSON marshals as JSON. +func (l Log) MarshalJSON() ([]byte, error) { + type Log struct { + Address common.Address `json:"address" gencodec:"required"` + Topics []common.Hash `json:"topics" gencodec:"required"` + Data hexutil.Bytes `json:"data" gencodec:"required"` + BlockNumber hexutil.Uint64 `json:"blockNumber"` + TxHash common.Hash `json:"transactionHash" gencodec:"required"` + TxIndex hexutil.Uint `json:"transactionIndex"` + BlockHash common.Hash `json:"blockHash"` + Index hexutil.Uint `json:"logIndex"` + Removed bool `json:"removed"` + } + var enc Log + enc.Address = l.Address + enc.Topics = l.Topics + enc.Data = l.Data + enc.BlockNumber = hexutil.Uint64(l.BlockNumber) + enc.TxHash = l.TxHash + enc.TxIndex = hexutil.Uint(l.TxIndex) + enc.BlockHash = l.BlockHash + enc.Index = hexutil.Uint(l.Index) + enc.Removed = l.Removed + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (l *Log) UnmarshalJSON(input []byte) error { + type Log struct { + Address *common.Address `json:"address" gencodec:"required"` + Topics []common.Hash `json:"topics" gencodec:"required"` + Data *hexutil.Bytes `json:"data" gencodec:"required"` + BlockNumber *hexutil.Uint64 `json:"blockNumber"` + TxHash *common.Hash `json:"transactionHash" gencodec:"required"` + TxIndex *hexutil.Uint `json:"transactionIndex"` + BlockHash *common.Hash `json:"blockHash"` + Index *hexutil.Uint `json:"logIndex"` + Removed *bool `json:"removed"` + } + var dec Log + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + if dec.Address == nil { + return errors.New("missing required field 'address' for Log") + } + l.Address = *dec.Address + if dec.Topics == nil { + return errors.New("missing required field 'topics' for Log") + } + l.Topics = dec.Topics + if dec.Data == nil { + return errors.New("missing required field 'data' for Log") + } + l.Data = *dec.Data + if dec.BlockNumber != nil { + l.BlockNumber = uint64(*dec.BlockNumber) + } + if dec.TxHash == nil { + return errors.New("missing required field 'transactionHash' for Log") + } + l.TxHash = *dec.TxHash + if dec.TxIndex != nil { + l.TxIndex = uint(*dec.TxIndex) + } + if dec.BlockHash != nil { + l.BlockHash = *dec.BlockHash + } + if dec.Index != nil { + l.Index = uint(*dec.Index) + } + if dec.Removed != nil { + l.Removed = *dec.Removed + } + return nil +} diff --git a/core/types/gen_receipt_json.go b/core/types/gen_receipt_json.go new file mode 100644 index 0000000000..bb892f85be --- /dev/null +++ b/core/types/gen_receipt_json.go @@ -0,0 +1,110 @@ +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. + +package types + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +var _ = (*receiptMarshaling)(nil) + +// MarshalJSON marshals as JSON. +func (r Receipt) MarshalJSON() ([]byte, error) { + type Receipt struct { + Type hexutil.Uint64 `json:"type,omitempty"` + PostState hexutil.Bytes `json:"root"` + Status hexutil.Uint64 `json:"status"` + CumulativeGasUsed hexutil.Uint64 `json:"cumulativeGasUsed" gencodec:"required"` + Bloom Bloom `json:"logsBloom" gencodec:"required"` + Logs []*Log `json:"logs" gencodec:"required"` + TxHash common.Hash `json:"transactionHash" gencodec:"required"` + ContractAddress common.Address `json:"contractAddress"` + GasUsed hexutil.Uint64 `json:"gasUsed" gencodec:"required"` + BlockHash common.Hash `json:"blockHash,omitempty"` + BlockNumber *hexutil.Big `json:"blockNumber,omitempty"` + TransactionIndex hexutil.Uint `json:"transactionIndex"` + } + var enc Receipt + enc.Type = hexutil.Uint64(r.Type) + enc.PostState = r.PostState + enc.Status = hexutil.Uint64(r.Status) + enc.CumulativeGasUsed = hexutil.Uint64(r.CumulativeGasUsed) + enc.Bloom = r.Bloom + enc.Logs = r.Logs + enc.TxHash = r.TxHash + enc.ContractAddress = r.ContractAddress + enc.GasUsed = hexutil.Uint64(r.GasUsed) + enc.BlockHash = r.BlockHash + enc.BlockNumber = (*hexutil.Big)(r.BlockNumber) + enc.TransactionIndex = hexutil.Uint(r.TransactionIndex) + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (r *Receipt) UnmarshalJSON(input []byte) error { + type Receipt struct { + Type *hexutil.Uint64 `json:"type,omitempty"` + PostState *hexutil.Bytes `json:"root"` + Status *hexutil.Uint64 `json:"status"` + CumulativeGasUsed *hexutil.Uint64 `json:"cumulativeGasUsed" gencodec:"required"` + Bloom *Bloom `json:"logsBloom" gencodec:"required"` + Logs []*Log `json:"logs" gencodec:"required"` + TxHash *common.Hash `json:"transactionHash" gencodec:"required"` + ContractAddress *common.Address `json:"contractAddress"` + GasUsed *hexutil.Uint64 `json:"gasUsed" gencodec:"required"` + BlockHash *common.Hash `json:"blockHash,omitempty"` + BlockNumber *hexutil.Big `json:"blockNumber,omitempty"` + TransactionIndex *hexutil.Uint `json:"transactionIndex"` + } + var dec Receipt + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + if dec.Type != nil { + r.Type = uint8(*dec.Type) + } + if dec.PostState != nil { + r.PostState = *dec.PostState + } + if dec.Status != nil { + r.Status = uint64(*dec.Status) + } + if dec.CumulativeGasUsed == nil { + return errors.New("missing required field 'cumulativeGasUsed' for Receipt") + } + r.CumulativeGasUsed = uint64(*dec.CumulativeGasUsed) + if dec.Bloom == nil { + return errors.New("missing required field 'logsBloom' for Receipt") + } + r.Bloom = *dec.Bloom + if dec.Logs == nil { + return errors.New("missing required field 'logs' for Receipt") + } + r.Logs = dec.Logs + if dec.TxHash == nil { + return errors.New("missing required field 'transactionHash' for Receipt") + } + r.TxHash = *dec.TxHash + if dec.ContractAddress != nil { + r.ContractAddress = *dec.ContractAddress + } + if dec.GasUsed == nil { + return errors.New("missing required field 'gasUsed' for Receipt") + } + r.GasUsed = uint64(*dec.GasUsed) + if dec.BlockHash != nil { + r.BlockHash = *dec.BlockHash + } + if dec.BlockNumber != nil { + r.BlockNumber = (*big.Int)(dec.BlockNumber) + } + if dec.TransactionIndex != nil { + r.TransactionIndex = uint(*dec.TransactionIndex) + } + return nil +} diff --git a/core/types/hashing.go b/core/types/hashing.go new file mode 100644 index 0000000000..6f876f33ad --- /dev/null +++ b/core/types/hashing.go @@ -0,0 +1,123 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "bytes" + "sync" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" + "golang.org/x/crypto/sha3" +) + +// hasherPool holds LegacyKeccak256 hashers for rlpHash. +var hasherPool = sync.Pool{ + New: func() interface{} { return sha3.NewLegacyKeccak256() }, +} + +// deriveBufferPool holds temporary encoder buffers for DeriveSha and TX encoding. +var encodeBufferPool = sync.Pool{ + New: func() interface{} { return new(bytes.Buffer) }, +} + +// rlpHash encodes x and hashes the encoded bytes. +func rlpHash(x interface{}) (h common.Hash) { + sha := hasherPool.Get().(crypto.KeccakState) + defer hasherPool.Put(sha) + sha.Reset() + rlp.Encode(sha, x) + sha.Read(h[:]) + return h +} + +// prefixedRlpHash writes the prefix into the hasher before rlp-encoding x. +// It's used for typed transactions. +func prefixedRlpHash(prefix byte, x interface{}) (h common.Hash) { + sha := hasherPool.Get().(crypto.KeccakState) + defer hasherPool.Put(sha) + sha.Reset() + sha.Write([]byte{prefix}) + rlp.Encode(sha, x) + sha.Read(h[:]) + return h +} + +// TrieHasher is the tool used to calculate the hash of derivable list. +// This is internal, do not use. +type TrieHasher interface { + Reset() + Update([]byte, []byte) + Hash() common.Hash +} + +// DerivableList is the input to DeriveSha. +// It is implemented by the 'Transactions' and 'Receipts' types. +// This is internal, do not use these methods. +type DerivableList interface { + Len() int + EncodeIndex(int, *bytes.Buffer) +} + +func encodeForDerive(list DerivableList, i int, buf *bytes.Buffer) []byte { + buf.Reset() + list.EncodeIndex(i, buf) + // It's really unfortunate that we need to do perform this copy. + // StackTrie holds onto the values until Hash is called, so the values + // written to it must not alias. + return common.CopyBytes(buf.Bytes()) +} + +// DeriveSha creates the tree hashes of transactions and receipts in a block header. +func DeriveSha(list DerivableList, hasher TrieHasher) common.Hash { + hasher.Reset() + + valueBuf := encodeBufferPool.Get().(*bytes.Buffer) + defer encodeBufferPool.Put(valueBuf) + + // StackTrie requires values to be inserted in increasing hash order, which is not the + // order that `list` provides hashes in. This insertion sequence ensures that the + // order is correct. + var indexBuf []byte + for i := 1; i < list.Len() && i <= 0x7f; i++ { + indexBuf = rlp.AppendUint64(indexBuf[:0], uint64(i)) + value := encodeForDerive(list, i, valueBuf) + hasher.Update(indexBuf, value) + } + if list.Len() > 0 { + indexBuf = rlp.AppendUint64(indexBuf[:0], 0) + value := encodeForDerive(list, 0, valueBuf) + hasher.Update(indexBuf, value) + } + for i := 0x80; i < list.Len(); i++ { + indexBuf = rlp.AppendUint64(indexBuf[:0], uint64(i)) + value := encodeForDerive(list, i, valueBuf) + hasher.Update(indexBuf, value) + } + return hasher.Hash() +} diff --git a/core/types/hashing_test.go b/core/types/hashing_test.go new file mode 100644 index 0000000000..58a9a91d49 --- /dev/null +++ b/core/types/hashing_test.go @@ -0,0 +1,239 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types_test + +import ( + "bytes" + "fmt" + "io" + "math/big" + mrand "math/rand" + "testing" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" +) + +func TestDeriveSha(t *testing.T) { + txs, err := genTxs(0) + if err != nil { + t.Fatal(err) + } + for len(txs) < 1000 { + exp := types.DeriveSha(txs, new(trie.Trie)) + got := types.DeriveSha(txs, trie.NewStackTrie(nil)) + if !bytes.Equal(got[:], exp[:]) { + t.Fatalf("%d txs: got %x exp %x", len(txs), got, exp) + } + newTxs, err := genTxs(uint64(len(txs) + 1)) + if err != nil { + t.Fatal(err) + } + txs = append(txs, newTxs...) + } +} + +// TestEIP2718DeriveSha tests that the input to the DeriveSha function is correct. +func TestEIP2718DeriveSha(t *testing.T) { + for _, tc := range []struct { + rlpData string + exp string + }{ + { + rlpData: "0xb8a701f8a486796f6c6f763380843b9aca008262d4948a8eafb1cf62bfbeb1741769dae1a9dd479961928080f838f7940000000000000000000000000000000000001337e1a0000000000000000000000000000000000000000000000000000000000000000080a0775101f92dcca278a56bfe4d613428624a1ebfc3cd9e0bcc1de80c41455b9021a06c9deac205afe7b124907d4ba54a9f46161498bd3990b90d175aac12c9a40ee9", + exp: "01 01f8a486796f6c6f763380843b9aca008262d4948a8eafb1cf62bfbeb1741769dae1a9dd479961928080f838f7940000000000000000000000000000000000001337e1a0000000000000000000000000000000000000000000000000000000000000000080a0775101f92dcca278a56bfe4d613428624a1ebfc3cd9e0bcc1de80c41455b9021a06c9deac205afe7b124907d4ba54a9f46161498bd3990b90d175aac12c9a40ee9\n80 01f8a486796f6c6f763380843b9aca008262d4948a8eafb1cf62bfbeb1741769dae1a9dd479961928080f838f7940000000000000000000000000000000000001337e1a0000000000000000000000000000000000000000000000000000000000000000080a0775101f92dcca278a56bfe4d613428624a1ebfc3cd9e0bcc1de80c41455b9021a06c9deac205afe7b124907d4ba54a9f46161498bd3990b90d175aac12c9a40ee9\n", + }, + } { + d := &hashToHumanReadable{} + var t1, t2 types.Transaction + rlp.DecodeBytes(common.FromHex(tc.rlpData), &t1) + rlp.DecodeBytes(common.FromHex(tc.rlpData), &t2) + txs := types.Transactions{&t1, &t2} + types.DeriveSha(txs, d) + if tc.exp != string(d.data) { + t.Fatalf("Want\n%v\nhave:\n%v", tc.exp, string(d.data)) + } + } +} + +func BenchmarkDeriveSha200(b *testing.B) { + txs, err := genTxs(200) + if err != nil { + b.Fatal(err) + } + var exp common.Hash + var got common.Hash + b.Run("std_trie", func(b *testing.B) { + b.ResetTimer() + b.ReportAllocs() + for i := 0; i < b.N; i++ { + exp = types.DeriveSha(txs, new(trie.Trie)) + } + }) + + b.Run("stack_trie", func(b *testing.B) { + b.ResetTimer() + b.ReportAllocs() + for i := 0; i < b.N; i++ { + got = types.DeriveSha(txs, trie.NewStackTrie(nil)) + } + }) + if got != exp { + b.Errorf("got %x exp %x", got, exp) + } +} + +func TestFuzzDeriveSha(t *testing.T) { + // increase this for longer runs -- it's set to quite low for travis + rndSeed := mrand.Int() + for i := 0; i < 10; i++ { + seed := rndSeed + i + exp := types.DeriveSha(newDummy(i), new(trie.Trie)) + got := types.DeriveSha(newDummy(i), trie.NewStackTrie(nil)) + if !bytes.Equal(got[:], exp[:]) { + printList(newDummy(seed)) + t.Fatalf("seed %d: got %x exp %x", seed, got, exp) + } + } +} + +// TestDerivableList contains testcases found via fuzzing +func TestDerivableList(t *testing.T) { + type tcase []string + tcs := []tcase{ + { + "0xc041", + }, + { + "0xf04cf757812428b0763112efb33b6f4fad7deb445e", + "0xf04cf757812428b0763112efb33b6f4fad7deb445e", + }, + { + "0xca410605310cdc3bb8d4977ae4f0143df54a724ed873457e2272f39d66e0460e971d9d", + "0x6cd850eca0a7ac46bb1748d7b9cb88aa3bd21c57d852c28198ad8fa422c4595032e88a4494b4778b36b944fe47a52b8c5cd312910139dfcb4147ab8e972cc456bcb063f25dd78f54c4d34679e03142c42c662af52947d45bdb6e555751334ace76a5080ab5a0256a1d259855dfc5c0b8023b25befbb13fd3684f9f755cbd3d63544c78ee2001452dd54633a7593ade0b183891a0a4e9c7844e1254005fbe592b1b89149a502c24b6e1dca44c158aebedf01beae9c30cabe16a", + "0x14abd5c47c0be87b0454596baad2", + "0xca410605310cdc3bb8d4977ae4f0143df54a724ed873457e2272f39d66e0460e971d9d", + }, + } + for i, tc := range tcs[1:] { + exp := types.DeriveSha(flatList(tc), new(trie.Trie)) + got := types.DeriveSha(flatList(tc), trie.NewStackTrie(nil)) + if !bytes.Equal(got[:], exp[:]) { + t.Fatalf("case %d: got %x exp %x", i, got, exp) + } + } +} + +func genTxs(num uint64) (types.Transactions, error) { + key, err := crypto.HexToECDSA("deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef") + if err != nil { + return nil, err + } + addr := crypto.PubkeyToAddress(key.PublicKey) + newTx := func(i uint64) (*types.Transaction, error) { + signer := types.NewEIP155Signer(big.NewInt(18)) + utx := types.NewTransaction(i, addr, new(big.Int), 0, new(big.Int).SetUint64(10000000), nil) + tx, err := types.SignTx(utx, signer, key) + return tx, err + } + var txs types.Transactions + for i := uint64(0); i < num; i++ { + tx, err := newTx(i) + if err != nil { + return nil, err + } + txs = append(txs, tx) + } + return txs, nil +} + +type dummyDerivableList struct { + len int + seed int +} + +func newDummy(seed int) *dummyDerivableList { + d := &dummyDerivableList{} + src := mrand.NewSource(int64(seed)) + // don't use lists longer than 4K items + d.len = int(src.Int63() & 0x0FFF) + d.seed = seed + return d +} + +func (d *dummyDerivableList) Len() int { + return d.len +} + +func (d *dummyDerivableList) EncodeIndex(i int, w *bytes.Buffer) { + src := mrand.NewSource(int64(d.seed + i)) + // max item size 256, at least 1 byte per item + size := 1 + src.Int63()&0x00FF + io.CopyN(w, mrand.New(src), size) +} + +func printList(l types.DerivableList) { + fmt.Printf("list length: %d\n", l.Len()) + fmt.Printf("{\n") + for i := 0; i < l.Len(); i++ { + var buf bytes.Buffer + l.EncodeIndex(i, &buf) + fmt.Printf("\"0x%x\",\n", buf.Bytes()) + } + fmt.Printf("},\n") +} + +type flatList []string + +func (f flatList) Len() int { + return len(f) +} + +func (f flatList) EncodeIndex(i int, w *bytes.Buffer) { + w.Write(hexutil.MustDecode(f[i])) +} + +type hashToHumanReadable struct { + data []byte +} + +func (d *hashToHumanReadable) Reset() { + d.data = make([]byte, 0) +} + +func (d *hashToHumanReadable) Update(i []byte, i2 []byte) { + l := fmt.Sprintf("%x %x\n", i, i2) + d.data = append(d.data, []byte(l)...) +} + +func (d *hashToHumanReadable) Hash() common.Hash { + return common.Hash{} +} diff --git a/core/types/legacy_tx.go b/core/types/legacy_tx.go new file mode 100644 index 0000000000..2c1aecae31 --- /dev/null +++ b/core/types/legacy_tx.go @@ -0,0 +1,122 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +// LegacyTx is the transaction data of regular Ethereum transactions. +type LegacyTx struct { + Nonce uint64 // nonce of sender account + GasPrice *big.Int // wei per gas + Gas uint64 // gas limit + To *common.Address `rlp:"nil"` // nil means contract creation + Value *big.Int // wei amount + Data []byte // contract invocation input data + V, R, S *big.Int // signature values +} + +// NewTransaction creates an unsigned legacy transaction. +// Deprecated: use NewTx instead. +func NewTransaction(nonce uint64, to common.Address, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction { + return NewTx(&LegacyTx{ + Nonce: nonce, + To: &to, + Value: amount, + Gas: gasLimit, + GasPrice: gasPrice, + Data: data, + }) +} + +// NewContractCreation creates an unsigned legacy transaction. +// Deprecated: use NewTx instead. +func NewContractCreation(nonce uint64, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction { + return NewTx(&LegacyTx{ + Nonce: nonce, + Value: amount, + Gas: gasLimit, + GasPrice: gasPrice, + Data: data, + }) +} + +// copy creates a deep copy of the transaction data and initializes all fields. +func (tx *LegacyTx) copy() TxData { + cpy := &LegacyTx{ + Nonce: tx.Nonce, + To: copyAddressPtr(tx.To), + Data: common.CopyBytes(tx.Data), + Gas: tx.Gas, + // These are initialized below. + Value: new(big.Int), + GasPrice: new(big.Int), + V: new(big.Int), + R: new(big.Int), + S: new(big.Int), + } + if tx.Value != nil { + cpy.Value.Set(tx.Value) + } + if tx.GasPrice != nil { + cpy.GasPrice.Set(tx.GasPrice) + } + if tx.V != nil { + cpy.V.Set(tx.V) + } + if tx.R != nil { + cpy.R.Set(tx.R) + } + if tx.S != nil { + cpy.S.Set(tx.S) + } + return cpy +} + +// accessors for innerTx. +func (tx *LegacyTx) txType() byte { return LegacyTxType } +func (tx *LegacyTx) chainID() *big.Int { return deriveChainId(tx.V) } +func (tx *LegacyTx) accessList() AccessList { return nil } +func (tx *LegacyTx) data() []byte { return tx.Data } +func (tx *LegacyTx) gas() uint64 { return tx.Gas } +func (tx *LegacyTx) gasPrice() *big.Int { return tx.GasPrice } +func (tx *LegacyTx) gasTipCap() *big.Int { return tx.GasPrice } +func (tx *LegacyTx) gasFeeCap() *big.Int { return tx.GasPrice } +func (tx *LegacyTx) value() *big.Int { return tx.Value } +func (tx *LegacyTx) nonce() uint64 { return tx.Nonce } +func (tx *LegacyTx) to() *common.Address { return tx.To } + +func (tx *LegacyTx) rawSignatureValues() (v, r, s *big.Int) { + return tx.V, tx.R, tx.S +} + +func (tx *LegacyTx) setSignatureValues(chainID, v, r, s *big.Int) { + tx.V, tx.R, tx.S = v, r, s +} diff --git a/core/types/log.go b/core/types/log.go new file mode 100644 index 0000000000..15ab9af155 --- /dev/null +++ b/core/types/log.go @@ -0,0 +1,153 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "io" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/rlp" +) + +//go:generate gencodec -type Log -field-override logMarshaling -out gen_log_json.go + +// Log represents a contract log event. These events are generated by the LOG opcode and +// stored/indexed by the node. +type Log struct { + // Consensus fields: + // address of the contract that generated the event + Address common.Address `json:"address" gencodec:"required"` + // list of topics provided by the contract. + Topics []common.Hash `json:"topics" gencodec:"required"` + // supplied by the contract, usually ABI-encoded + Data []byte `json:"data" gencodec:"required"` + + // Derived fields. These fields are filled in by the node + // but not secured by consensus. + // block in which the transaction was included + BlockNumber uint64 `json:"blockNumber"` + // hash of the transaction + TxHash common.Hash `json:"transactionHash" gencodec:"required"` + // index of the transaction in the block + TxIndex uint `json:"transactionIndex"` + // hash of the block in which the transaction was included + BlockHash common.Hash `json:"blockHash"` + // index of the log in the block + Index uint `json:"logIndex"` + + // The Removed field is true if this log was reverted due to a chain reorganisation. + // You must pay attention to this field if you receive logs through a filter query. + Removed bool `json:"removed"` +} + +type logMarshaling struct { + Data hexutil.Bytes + BlockNumber hexutil.Uint64 + TxIndex hexutil.Uint + Index hexutil.Uint +} + +type rlpLog struct { + Address common.Address + Topics []common.Hash + Data []byte +} + +// rlpStorageLog is the storage encoding of a log. +type rlpStorageLog rlpLog + +// legacyRlpStorageLog is the previous storage encoding of a log including some redundant fields. +type legacyRlpStorageLog struct { + Address common.Address + Topics []common.Hash + Data []byte + BlockNumber uint64 + TxHash common.Hash + TxIndex uint + BlockHash common.Hash + Index uint +} + +// EncodeRLP implements rlp.Encoder. +func (l *Log) EncodeRLP(w io.Writer) error { + return rlp.Encode(w, rlpLog{Address: l.Address, Topics: l.Topics, Data: l.Data}) +} + +// DecodeRLP implements rlp.Decoder. +func (l *Log) DecodeRLP(s *rlp.Stream) error { + var dec rlpLog + err := s.Decode(&dec) + if err == nil { + l.Address, l.Topics, l.Data = dec.Address, dec.Topics, dec.Data + } + return err +} + +// LogForStorage is a wrapper around a Log that flattens and parses the entire content of +// a log including non-consensus fields. +type LogForStorage Log + +// EncodeRLP implements rlp.Encoder. +func (l *LogForStorage) EncodeRLP(w io.Writer) error { + return rlp.Encode(w, rlpStorageLog{ + Address: l.Address, + Topics: l.Topics, + Data: l.Data, + }) +} + +// DecodeRLP implements rlp.Decoder. +// +// Note some redundant fields(e.g. block number, tx hash etc) will be assembled later. +func (l *LogForStorage) DecodeRLP(s *rlp.Stream) error { + blob, err := s.Raw() + if err != nil { + return err + } + var dec rlpStorageLog + err = rlp.DecodeBytes(blob, &dec) + if err == nil { + *l = LogForStorage{ + Address: dec.Address, + Topics: dec.Topics, + Data: dec.Data, + } + } else { + // Try to decode log with previous definition. + var dec legacyRlpStorageLog + err = rlp.DecodeBytes(blob, &dec) + if err == nil { + *l = LogForStorage{ + Address: dec.Address, + Topics: dec.Topics, + Data: dec.Data, + } + } + } + return err +} diff --git a/core/types/receipt.go b/core/types/receipt.go new file mode 100644 index 0000000000..3849a6d593 --- /dev/null +++ b/core/types/receipt.go @@ -0,0 +1,459 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "bytes" + "errors" + "fmt" + "io" + "math/big" + "unsafe" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" +) + +//go:generate gencodec -type Receipt -field-override receiptMarshaling -out gen_receipt_json.go + +var ( + receiptStatusFailedRLP = []byte{} + receiptStatusSuccessfulRLP = []byte{0x01} +) + +// This error is returned when a typed receipt is decoded, but the string is empty. +var errEmptyTypedReceipt = errors.New("empty typed receipt bytes") + +const ( + // ReceiptStatusFailed is the status code of a transaction if execution failed. + ReceiptStatusFailed = uint64(0) + + // ReceiptStatusSuccessful is the status code of a transaction if execution succeeded. + ReceiptStatusSuccessful = uint64(1) +) + +// Receipt represents the results of a transaction. +type Receipt struct { + // Consensus fields: These fields are defined by the Yellow Paper + Type uint8 `json:"type,omitempty"` + PostState []byte `json:"root"` + Status uint64 `json:"status"` + CumulativeGasUsed uint64 `json:"cumulativeGasUsed" gencodec:"required"` + Bloom Bloom `json:"logsBloom" gencodec:"required"` + Logs []*Log `json:"logs" gencodec:"required"` + + // Implementation fields: These fields are added by geth when processing a transaction. + // They are stored in the chain database. + TxHash common.Hash `json:"transactionHash" gencodec:"required"` + ContractAddress common.Address `json:"contractAddress"` + GasUsed uint64 `json:"gasUsed" gencodec:"required"` + + // Inclusion information: These fields provide information about the inclusion of the + // transaction corresponding to this receipt. + BlockHash common.Hash `json:"blockHash,omitempty"` + BlockNumber *big.Int `json:"blockNumber,omitempty"` + TransactionIndex uint `json:"transactionIndex"` +} + +type receiptMarshaling struct { + Type hexutil.Uint64 + PostState hexutil.Bytes + Status hexutil.Uint64 + CumulativeGasUsed hexutil.Uint64 + GasUsed hexutil.Uint64 + BlockNumber *hexutil.Big + TransactionIndex hexutil.Uint +} + +// receiptRLP is the consensus encoding of a receipt. +type receiptRLP struct { + PostStateOrStatus []byte + CumulativeGasUsed uint64 + Bloom Bloom + Logs []*Log +} + +// storedReceiptRLP is the storage encoding of a receipt. +type storedReceiptRLP struct { + PostStateOrStatus []byte + CumulativeGasUsed uint64 + Logs []*LogForStorage +} + +// v4StoredReceiptRLP is the storage encoding of a receipt used in database version 4. +type v4StoredReceiptRLP struct { + PostStateOrStatus []byte + CumulativeGasUsed uint64 + TxHash common.Hash + ContractAddress common.Address + Logs []*LogForStorage + GasUsed uint64 +} + +// v3StoredReceiptRLP is the original storage encoding of a receipt including some unnecessary fields. +type v3StoredReceiptRLP struct { + PostStateOrStatus []byte + CumulativeGasUsed uint64 + Bloom Bloom + TxHash common.Hash + ContractAddress common.Address + Logs []*LogForStorage + GasUsed uint64 +} + +// NewReceipt creates a barebone transaction receipt, copying the init fields. +// Deprecated: create receipts using a struct literal instead. +func NewReceipt(root []byte, failed bool, cumulativeGasUsed uint64) *Receipt { + r := &Receipt{ + Type: LegacyTxType, + PostState: common.CopyBytes(root), + CumulativeGasUsed: cumulativeGasUsed, + } + if failed { + r.Status = ReceiptStatusFailed + } else { + r.Status = ReceiptStatusSuccessful + } + return r +} + +// EncodeRLP implements rlp.Encoder, and flattens the consensus fields of a receipt +// into an RLP stream. If no post state is present, byzantium fork is assumed. +func (r *Receipt) EncodeRLP(w io.Writer) error { + data := &receiptRLP{r.statusEncoding(), r.CumulativeGasUsed, r.Bloom, r.Logs} + if r.Type == LegacyTxType { + return rlp.Encode(w, data) + } + buf := encodeBufferPool.Get().(*bytes.Buffer) + defer encodeBufferPool.Put(buf) + buf.Reset() + if err := r.encodeTyped(data, buf); err != nil { + return err + } + return rlp.Encode(w, buf.Bytes()) +} + +// encodeTyped writes the canonical encoding of a typed receipt to w. +func (r *Receipt) encodeTyped(data *receiptRLP, w *bytes.Buffer) error { + w.WriteByte(r.Type) + return rlp.Encode(w, data) +} + +// MarshalBinary returns the consensus encoding of the receipt. +func (r *Receipt) MarshalBinary() ([]byte, error) { + if r.Type == LegacyTxType { + return rlp.EncodeToBytes(r) + } + data := &receiptRLP{r.statusEncoding(), r.CumulativeGasUsed, r.Bloom, r.Logs} + var buf bytes.Buffer + err := r.encodeTyped(data, &buf) + return buf.Bytes(), err +} + +// DecodeRLP implements rlp.Decoder, and loads the consensus fields of a receipt +// from an RLP stream. +func (r *Receipt) DecodeRLP(s *rlp.Stream) error { + kind, _, err := s.Kind() + switch { + case err != nil: + return err + case kind == rlp.List: + // It's a legacy receipt. + var dec receiptRLP + if err := s.Decode(&dec); err != nil { + return err + } + r.Type = LegacyTxType + return r.setFromRLP(dec) + case kind == rlp.String: + // It's an EIP-2718 typed tx receipt. + b, err := s.Bytes() + if err != nil { + return err + } + if len(b) == 0 { + return errEmptyTypedReceipt + } + r.Type = b[0] + if r.Type == AccessListTxType || r.Type == DynamicFeeTxType { + var dec receiptRLP + if err := rlp.DecodeBytes(b[1:], &dec); err != nil { + return err + } + return r.setFromRLP(dec) + } + return ErrTxTypeNotSupported + default: + return rlp.ErrExpectedList + } +} + +// UnmarshalBinary decodes the consensus encoding of receipts. +// It supports legacy RLP receipts and EIP-2718 typed receipts. +func (r *Receipt) UnmarshalBinary(b []byte) error { + if len(b) > 0 && b[0] > 0x7f { + // It's a legacy receipt decode the RLP + var data receiptRLP + err := rlp.DecodeBytes(b, &data) + if err != nil { + return err + } + r.Type = LegacyTxType + return r.setFromRLP(data) + } + // It's an EIP2718 typed transaction envelope. + return r.decodeTyped(b) +} + +// decodeTyped decodes a typed receipt from the canonical format. +func (r *Receipt) decodeTyped(b []byte) error { + if len(b) == 0 { + return errEmptyTypedReceipt + } + switch b[0] { + case DynamicFeeTxType, AccessListTxType: + var data receiptRLP + err := rlp.DecodeBytes(b[1:], &data) + if err != nil { + return err + } + r.Type = b[0] + return r.setFromRLP(data) + default: + return ErrTxTypeNotSupported + } +} + +func (r *Receipt) setFromRLP(data receiptRLP) error { + r.CumulativeGasUsed, r.Bloom, r.Logs = data.CumulativeGasUsed, data.Bloom, data.Logs + return r.setStatus(data.PostStateOrStatus) +} + +func (r *Receipt) setStatus(postStateOrStatus []byte) error { + switch { + case bytes.Equal(postStateOrStatus, receiptStatusSuccessfulRLP): + r.Status = ReceiptStatusSuccessful + case bytes.Equal(postStateOrStatus, receiptStatusFailedRLP): + r.Status = ReceiptStatusFailed + case len(postStateOrStatus) == len(common.Hash{}): + r.PostState = postStateOrStatus + default: + return fmt.Errorf("invalid receipt status %x", postStateOrStatus) + } + return nil +} + +func (r *Receipt) statusEncoding() []byte { + if len(r.PostState) == 0 { + if r.Status == ReceiptStatusFailed { + return receiptStatusFailedRLP + } + return receiptStatusSuccessfulRLP + } + return r.PostState +} + +// Size returns the approximate memory used by all internal contents. It is used +// to approximate and limit the memory consumption of various caches. +func (r *Receipt) Size() common.StorageSize { + size := common.StorageSize(unsafe.Sizeof(*r)) + common.StorageSize(len(r.PostState)) + size += common.StorageSize(len(r.Logs)) * common.StorageSize(unsafe.Sizeof(Log{})) + for _, log := range r.Logs { + size += common.StorageSize(len(log.Topics)*common.HashLength + len(log.Data)) + } + return size +} + +// ReceiptForStorage is a wrapper around a Receipt that flattens and parses the +// entire content of a receipt, as opposed to only the consensus fields originally. +type ReceiptForStorage Receipt + +// EncodeRLP implements rlp.Encoder, and flattens all content fields of a receipt +// into an RLP stream. +func (r *ReceiptForStorage) EncodeRLP(w io.Writer) error { + enc := &storedReceiptRLP{ + PostStateOrStatus: (*Receipt)(r).statusEncoding(), + CumulativeGasUsed: r.CumulativeGasUsed, + Logs: make([]*LogForStorage, len(r.Logs)), + } + for i, log := range r.Logs { + enc.Logs[i] = (*LogForStorage)(log) + } + return rlp.Encode(w, enc) +} + +// DecodeRLP implements rlp.Decoder, and loads both consensus and implementation +// fields of a receipt from an RLP stream. +func (r *ReceiptForStorage) DecodeRLP(s *rlp.Stream) error { + // Retrieve the entire receipt blob as we need to try multiple decoders + blob, err := s.Raw() + if err != nil { + return err + } + // Try decoding from the newest format for future proofness, then the older one + // for old nodes that just upgraded. V4 was an intermediate unreleased format so + // we do need to decode it, but it's not common (try last). + if err := decodeStoredReceiptRLP(r, blob); err == nil { + return nil + } + if err := decodeV3StoredReceiptRLP(r, blob); err == nil { + return nil + } + return decodeV4StoredReceiptRLP(r, blob) +} + +func decodeStoredReceiptRLP(r *ReceiptForStorage, blob []byte) error { + var stored storedReceiptRLP + if err := rlp.DecodeBytes(blob, &stored); err != nil { + return err + } + if err := (*Receipt)(r).setStatus(stored.PostStateOrStatus); err != nil { + return err + } + r.CumulativeGasUsed = stored.CumulativeGasUsed + r.Logs = make([]*Log, len(stored.Logs)) + for i, log := range stored.Logs { + r.Logs[i] = (*Log)(log) + } + r.Bloom = CreateBloom(Receipts{(*Receipt)(r)}) + + return nil +} + +func decodeV4StoredReceiptRLP(r *ReceiptForStorage, blob []byte) error { + var stored v4StoredReceiptRLP + if err := rlp.DecodeBytes(blob, &stored); err != nil { + return err + } + if err := (*Receipt)(r).setStatus(stored.PostStateOrStatus); err != nil { + return err + } + r.CumulativeGasUsed = stored.CumulativeGasUsed + r.TxHash = stored.TxHash + r.ContractAddress = stored.ContractAddress + r.GasUsed = stored.GasUsed + r.Logs = make([]*Log, len(stored.Logs)) + for i, log := range stored.Logs { + r.Logs[i] = (*Log)(log) + } + r.Bloom = CreateBloom(Receipts{(*Receipt)(r)}) + + return nil +} + +func decodeV3StoredReceiptRLP(r *ReceiptForStorage, blob []byte) error { + var stored v3StoredReceiptRLP + if err := rlp.DecodeBytes(blob, &stored); err != nil { + return err + } + if err := (*Receipt)(r).setStatus(stored.PostStateOrStatus); err != nil { + return err + } + r.CumulativeGasUsed = stored.CumulativeGasUsed + r.Bloom = stored.Bloom + r.TxHash = stored.TxHash + r.ContractAddress = stored.ContractAddress + r.GasUsed = stored.GasUsed + r.Logs = make([]*Log, len(stored.Logs)) + for i, log := range stored.Logs { + r.Logs[i] = (*Log)(log) + } + return nil +} + +// Receipts implements DerivableList for receipts. +type Receipts []*Receipt + +// Len returns the number of receipts in this list. +func (rs Receipts) Len() int { return len(rs) } + +// EncodeIndex encodes the i'th receipt to w. +func (rs Receipts) EncodeIndex(i int, w *bytes.Buffer) { + r := rs[i] + data := &receiptRLP{r.statusEncoding(), r.CumulativeGasUsed, r.Bloom, r.Logs} + switch r.Type { + case LegacyTxType: + rlp.Encode(w, data) + case AccessListTxType: + w.WriteByte(AccessListTxType) + rlp.Encode(w, data) + case DynamicFeeTxType: + w.WriteByte(DynamicFeeTxType) + rlp.Encode(w, data) + default: + // For unsupported types, write nothing. Since this is for + // DeriveSha, the error will be caught matching the derived hash + // to the block. + } +} + +// DeriveFields fills the receipts with their computed fields based on consensus +// data and contextual infos like containing block and transactions. +func (rs Receipts) DeriveFields(config *params.ChainConfig, hash common.Hash, number uint64, time uint64, txs Transactions) error { + signer := MakeSigner(config, new(big.Int).SetUint64(number), new(big.Int).SetUint64(time)) + + logIndex := uint(0) + if len(txs) != len(rs) { + return errors.New("transaction and receipt count mismatch") + } + for i := 0; i < len(rs); i++ { + // The transaction type and hash can be retrieved from the transaction itself + rs[i].Type = txs[i].Type() + rs[i].TxHash = txs[i].Hash() + + // block location fields + rs[i].BlockHash = hash + rs[i].BlockNumber = new(big.Int).SetUint64(number) + rs[i].TransactionIndex = uint(i) + + // The contract address can be derived from the transaction itself + if txs[i].To() == nil { + // Deriving the signer is expensive, only do if it's actually needed + from, _ := Sender(signer, txs[i]) + rs[i].ContractAddress = crypto.CreateAddress(from, txs[i].Nonce()) + } + // The used gas can be calculated based on previous r + if i == 0 { + rs[i].GasUsed = rs[i].CumulativeGasUsed + } else { + rs[i].GasUsed = rs[i].CumulativeGasUsed - rs[i-1].CumulativeGasUsed + } + // The derived log fields can simply be set from the block and transaction + for j := 0; j < len(rs[i].Logs); j++ { + rs[i].Logs[j].BlockNumber = number + rs[i].Logs[j].BlockHash = hash + rs[i].Logs[j].TxHash = rs[i].TxHash + rs[i].Logs[j].TxIndex = uint(i) + rs[i].Logs[j].Index = logIndex + logIndex++ + } + } + return nil +} diff --git a/core/types/receipt_test.go b/core/types/receipt_test.go new file mode 100644 index 0000000000..9005d20cee --- /dev/null +++ b/core/types/receipt_test.go @@ -0,0 +1,514 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "bytes" + "math" + "math/big" + "reflect" + "testing" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" +) + +var ( + legacyReceipt = &Receipt{ + Status: ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*Log{ + { + Address: common.BytesToAddress([]byte{0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + { + Address: common.BytesToAddress([]byte{0x01, 0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + }, + } + accessListReceipt = &Receipt{ + Status: ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*Log{ + { + Address: common.BytesToAddress([]byte{0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + { + Address: common.BytesToAddress([]byte{0x01, 0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + }, + Type: AccessListTxType, + } + eip1559Receipt = &Receipt{ + Status: ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*Log{ + { + Address: common.BytesToAddress([]byte{0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + { + Address: common.BytesToAddress([]byte{0x01, 0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + }, + Type: DynamicFeeTxType, + } +) + +func TestDecodeEmptyTypedReceipt(t *testing.T) { + input := []byte{0x80} + var r Receipt + err := rlp.DecodeBytes(input, &r) + if err != errEmptyTypedReceipt { + t.Fatal("wrong error:", err) + } +} + +func TestLegacyReceiptDecoding(t *testing.T) { + tests := []struct { + name string + encode func(*Receipt) ([]byte, error) + }{ + { + "StoredReceiptRLP", + encodeAsStoredReceiptRLP, + }, + { + "V4StoredReceiptRLP", + encodeAsV4StoredReceiptRLP, + }, + { + "V3StoredReceiptRLP", + encodeAsV3StoredReceiptRLP, + }, + } + + tx := NewTransaction(1, common.HexToAddress("0x1"), big.NewInt(1), 1, big.NewInt(1), nil) + receipt := &Receipt{ + Status: ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*Log{ + { + Address: common.BytesToAddress([]byte{0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + { + Address: common.BytesToAddress([]byte{0x01, 0x11}), + Topics: []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")}, + Data: []byte{0x01, 0x00, 0xff}, + }, + }, + TxHash: tx.Hash(), + ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}), + GasUsed: 111111, + } + receipt.Bloom = CreateBloom(Receipts{receipt}) + + for _, tc := range tests { + t.Run(tc.name, func(t *testing.T) { + enc, err := tc.encode(receipt) + if err != nil { + t.Fatalf("Error encoding receipt: %v", err) + } + var dec ReceiptForStorage + if err := rlp.DecodeBytes(enc, &dec); err != nil { + t.Fatalf("Error decoding RLP receipt: %v", err) + } + // Check whether all consensus fields are correct. + if dec.Status != receipt.Status { + t.Fatalf("Receipt status mismatch, want %v, have %v", receipt.Status, dec.Status) + } + if dec.CumulativeGasUsed != receipt.CumulativeGasUsed { + t.Fatalf("Receipt CumulativeGasUsed mismatch, want %v, have %v", receipt.CumulativeGasUsed, dec.CumulativeGasUsed) + } + if dec.Bloom != receipt.Bloom { + t.Fatalf("Bloom data mismatch, want %v, have %v", receipt.Bloom, dec.Bloom) + } + if len(dec.Logs) != len(receipt.Logs) { + t.Fatalf("Receipt log number mismatch, want %v, have %v", len(receipt.Logs), len(dec.Logs)) + } + for i := 0; i < len(dec.Logs); i++ { + if dec.Logs[i].Address != receipt.Logs[i].Address { + t.Fatalf("Receipt log %d address mismatch, want %v, have %v", i, receipt.Logs[i].Address, dec.Logs[i].Address) + } + if !reflect.DeepEqual(dec.Logs[i].Topics, receipt.Logs[i].Topics) { + t.Fatalf("Receipt log %d topics mismatch, want %v, have %v", i, receipt.Logs[i].Topics, dec.Logs[i].Topics) + } + if !bytes.Equal(dec.Logs[i].Data, receipt.Logs[i].Data) { + t.Fatalf("Receipt log %d data mismatch, want %v, have %v", i, receipt.Logs[i].Data, dec.Logs[i].Data) + } + } + }) + } +} + +func encodeAsStoredReceiptRLP(want *Receipt) ([]byte, error) { + stored := &storedReceiptRLP{ + PostStateOrStatus: want.statusEncoding(), + CumulativeGasUsed: want.CumulativeGasUsed, + Logs: make([]*LogForStorage, len(want.Logs)), + } + for i, log := range want.Logs { + stored.Logs[i] = (*LogForStorage)(log) + } + return rlp.EncodeToBytes(stored) +} + +func encodeAsV4StoredReceiptRLP(want *Receipt) ([]byte, error) { + stored := &v4StoredReceiptRLP{ + PostStateOrStatus: want.statusEncoding(), + CumulativeGasUsed: want.CumulativeGasUsed, + TxHash: want.TxHash, + ContractAddress: want.ContractAddress, + Logs: make([]*LogForStorage, len(want.Logs)), + GasUsed: want.GasUsed, + } + for i, log := range want.Logs { + stored.Logs[i] = (*LogForStorage)(log) + } + return rlp.EncodeToBytes(stored) +} + +func encodeAsV3StoredReceiptRLP(want *Receipt) ([]byte, error) { + stored := &v3StoredReceiptRLP{ + PostStateOrStatus: want.statusEncoding(), + CumulativeGasUsed: want.CumulativeGasUsed, + Bloom: want.Bloom, + TxHash: want.TxHash, + ContractAddress: want.ContractAddress, + Logs: make([]*LogForStorage, len(want.Logs)), + GasUsed: want.GasUsed, + } + for i, log := range want.Logs { + stored.Logs[i] = (*LogForStorage)(log) + } + return rlp.EncodeToBytes(stored) +} + +// Tests that receipt data can be correctly derived from the contextual infos +func TestDeriveFields(t *testing.T) { + // Create a few transactions to have receipts for + to2 := common.HexToAddress("0x2") + to3 := common.HexToAddress("0x3") + txs := Transactions{ + NewTx(&LegacyTx{ + Nonce: 1, + Value: big.NewInt(1), + Gas: 1, + GasPrice: big.NewInt(1), + }), + NewTx(&LegacyTx{ + To: &to2, + Nonce: 2, + Value: big.NewInt(2), + Gas: 2, + GasPrice: big.NewInt(2), + }), + NewTx(&AccessListTx{ + To: &to3, + Nonce: 3, + Value: big.NewInt(3), + Gas: 3, + GasPrice: big.NewInt(3), + }), + } + // Create the corresponding receipts + receipts := Receipts{ + &Receipt{ + Status: ReceiptStatusFailed, + CumulativeGasUsed: 1, + Logs: []*Log{ + {Address: common.BytesToAddress([]byte{0x11})}, + {Address: common.BytesToAddress([]byte{0x01, 0x11})}, + }, + TxHash: txs[0].Hash(), + ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}), + GasUsed: 1, + }, + &Receipt{ + PostState: common.Hash{2}.Bytes(), + CumulativeGasUsed: 3, + Logs: []*Log{ + {Address: common.BytesToAddress([]byte{0x22})}, + {Address: common.BytesToAddress([]byte{0x02, 0x22})}, + }, + TxHash: txs[1].Hash(), + ContractAddress: common.BytesToAddress([]byte{0x02, 0x22, 0x22}), + GasUsed: 2, + }, + &Receipt{ + Type: AccessListTxType, + PostState: common.Hash{3}.Bytes(), + CumulativeGasUsed: 6, + Logs: []*Log{ + {Address: common.BytesToAddress([]byte{0x33})}, + {Address: common.BytesToAddress([]byte{0x03, 0x33})}, + }, + TxHash: txs[2].Hash(), + ContractAddress: common.BytesToAddress([]byte{0x03, 0x33, 0x33}), + GasUsed: 3, + }, + } + // Clear all the computed fields and re-derive them + number := big.NewInt(1) + hash := common.BytesToHash([]byte{0x03, 0x14}) + + clearComputedFieldsOnReceipts(t, receipts) + if err := receipts.DeriveFields(params.TestChainConfig, hash, number.Uint64(), number.Uint64(), txs); err != nil { + t.Fatalf("DeriveFields(...) = %v, want ", err) + } + // Iterate over all the computed fields and check that they're correct + signer := MakeSigner(params.TestChainConfig, number, number) + + logIndex := uint(0) + for i := range receipts { + if receipts[i].Type != txs[i].Type() { + t.Errorf("receipts[%d].Type = %d, want %d", i, receipts[i].Type, txs[i].Type()) + } + if receipts[i].TxHash != txs[i].Hash() { + t.Errorf("receipts[%d].TxHash = %s, want %s", i, receipts[i].TxHash.String(), txs[i].Hash().String()) + } + if receipts[i].BlockHash != hash { + t.Errorf("receipts[%d].BlockHash = %s, want %s", i, receipts[i].BlockHash.String(), hash.String()) + } + if receipts[i].BlockNumber.Cmp(number) != 0 { + t.Errorf("receipts[%c].BlockNumber = %s, want %s", i, receipts[i].BlockNumber.String(), number.String()) + } + if receipts[i].TransactionIndex != uint(i) { + t.Errorf("receipts[%d].TransactionIndex = %d, want %d", i, receipts[i].TransactionIndex, i) + } + if receipts[i].GasUsed != txs[i].Gas() { + t.Errorf("receipts[%d].GasUsed = %d, want %d", i, receipts[i].GasUsed, txs[i].Gas()) + } + if txs[i].To() != nil && receipts[i].ContractAddress != (common.Address{}) { + t.Errorf("receipts[%d].ContractAddress = %s, want %s", i, receipts[i].ContractAddress.String(), (common.Address{}).String()) + } + from, _ := Sender(signer, txs[i]) + contractAddress := crypto.CreateAddress(from, txs[i].Nonce()) + if txs[i].To() == nil && receipts[i].ContractAddress != contractAddress { + t.Errorf("receipts[%d].ContractAddress = %s, want %s", i, receipts[i].ContractAddress.String(), contractAddress.String()) + } + for j := range receipts[i].Logs { + if receipts[i].Logs[j].BlockNumber != number.Uint64() { + t.Errorf("receipts[%d].Logs[%d].BlockNumber = %d, want %d", i, j, receipts[i].Logs[j].BlockNumber, number.Uint64()) + } + if receipts[i].Logs[j].BlockHash != hash { + t.Errorf("receipts[%d].Logs[%d].BlockHash = %s, want %s", i, j, receipts[i].Logs[j].BlockHash.String(), hash.String()) + } + if receipts[i].Logs[j].TxHash != txs[i].Hash() { + t.Errorf("receipts[%d].Logs[%d].TxHash = %s, want %s", i, j, receipts[i].Logs[j].TxHash.String(), txs[i].Hash().String()) + } + if receipts[i].Logs[j].TxIndex != uint(i) { + t.Errorf("receipts[%d].Logs[%d].TransactionIndex = %d, want %d", i, j, receipts[i].Logs[j].TxIndex, i) + } + if receipts[i].Logs[j].Index != logIndex { + t.Errorf("receipts[%d].Logs[%d].Index = %d, want %d", i, j, receipts[i].Logs[j].Index, logIndex) + } + logIndex++ + } + } +} + +// TestTypedReceiptEncodingDecoding reproduces a flaw that existed in the receipt +// rlp decoder, which failed due to a shadowing error. +func TestTypedReceiptEncodingDecoding(t *testing.T) { + payload := common.FromHex("f9043eb9010c01f90108018262d4b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0b9010c01f901080182cd14b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0b9010d01f901090183013754b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0b9010d01f90109018301a194b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0") + check := func(bundle []*Receipt) { + t.Helper() + for i, receipt := range bundle { + if got, want := receipt.Type, uint8(1); got != want { + t.Fatalf("bundle %d: got %x, want %x", i, got, want) + } + } + } + { + var bundle []*Receipt + rlp.DecodeBytes(payload, &bundle) + check(bundle) + } + { + var bundle []*Receipt + r := bytes.NewReader(payload) + s := rlp.NewStream(r, uint64(len(payload))) + if err := s.Decode(&bundle); err != nil { + t.Fatal(err) + } + check(bundle) + } +} + +func TestReceiptMarshalBinary(t *testing.T) { + // Legacy Receipt + legacyReceipt.Bloom = CreateBloom(Receipts{legacyReceipt}) + have, err := legacyReceipt.MarshalBinary() + if err != nil { + t.Fatalf("marshal binary error: %v", err) + } + legacyReceipts := Receipts{legacyReceipt} + buf := new(bytes.Buffer) + legacyReceipts.EncodeIndex(0, buf) + haveEncodeIndex := buf.Bytes() + if !bytes.Equal(have, haveEncodeIndex) { + t.Errorf("BinaryMarshal and EncodeIndex mismatch, got %x want %x", have, haveEncodeIndex) + } + buf.Reset() + if err := legacyReceipt.EncodeRLP(buf); err != nil { + t.Fatalf("encode rlp error: %v", err) + } + haveRLPEncode := buf.Bytes() + if !bytes.Equal(have, haveRLPEncode) { + t.Errorf("BinaryMarshal and EncodeRLP mismatch for legacy tx, got %x want %x", have, haveRLPEncode) + } + legacyWant := common.FromHex("f901c58001b9010000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000010000080000000000000000000004000000000000000000000000000040000000000000000000000000000800000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000f8bef85d940000000000000000000000000000000000000011f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100fff85d940000000000000000000000000000000000000111f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100ff") + if !bytes.Equal(have, legacyWant) { + t.Errorf("encoded RLP mismatch, got %x want %x", have, legacyWant) + } + + // 2930 Receipt + buf.Reset() + accessListReceipt.Bloom = CreateBloom(Receipts{accessListReceipt}) + have, err = accessListReceipt.MarshalBinary() + if err != nil { + t.Fatalf("marshal binary error: %v", err) + } + accessListReceipts := Receipts{accessListReceipt} + accessListReceipts.EncodeIndex(0, buf) + haveEncodeIndex = buf.Bytes() + if !bytes.Equal(have, haveEncodeIndex) { + t.Errorf("BinaryMarshal and EncodeIndex mismatch, got %x want %x", have, haveEncodeIndex) + } + accessListWant := common.FromHex("01f901c58001b9010000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000010000080000000000000000000004000000000000000000000000000040000000000000000000000000000800000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000f8bef85d940000000000000000000000000000000000000011f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100fff85d940000000000000000000000000000000000000111f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100ff") + if !bytes.Equal(have, accessListWant) { + t.Errorf("encoded RLP mismatch, got %x want %x", have, accessListWant) + } + + // 1559 Receipt + buf.Reset() + eip1559Receipt.Bloom = CreateBloom(Receipts{eip1559Receipt}) + have, err = eip1559Receipt.MarshalBinary() + if err != nil { + t.Fatalf("marshal binary error: %v", err) + } + eip1559Receipts := Receipts{eip1559Receipt} + eip1559Receipts.EncodeIndex(0, buf) + haveEncodeIndex = buf.Bytes() + if !bytes.Equal(have, haveEncodeIndex) { + t.Errorf("BinaryMarshal and EncodeIndex mismatch, got %x want %x", have, haveEncodeIndex) + } + eip1559Want := common.FromHex("02f901c58001b9010000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000010000080000000000000000000004000000000000000000000000000040000000000000000000000000000800000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000f8bef85d940000000000000000000000000000000000000011f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100fff85d940000000000000000000000000000000000000111f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100ff") + if !bytes.Equal(have, eip1559Want) { + t.Errorf("encoded RLP mismatch, got %x want %x", have, eip1559Want) + } +} + +func TestReceiptUnmarshalBinary(t *testing.T) { + // Legacy Receipt + legacyBinary := common.FromHex("f901c58001b9010000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000010000080000000000000000000004000000000000000000000000000040000000000000000000000000000800000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000f8bef85d940000000000000000000000000000000000000011f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100fff85d940000000000000000000000000000000000000111f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100ff") + gotLegacyReceipt := new(Receipt) + if err := gotLegacyReceipt.UnmarshalBinary(legacyBinary); err != nil { + t.Fatalf("unmarshal binary error: %v", err) + } + legacyReceipt.Bloom = CreateBloom(Receipts{legacyReceipt}) + if !reflect.DeepEqual(gotLegacyReceipt, legacyReceipt) { + t.Errorf("receipt unmarshalled from binary mismatch, got %v want %v", gotLegacyReceipt, legacyReceipt) + } + + // 2930 Receipt + accessListBinary := common.FromHex("01f901c58001b9010000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000010000080000000000000000000004000000000000000000000000000040000000000000000000000000000800000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000f8bef85d940000000000000000000000000000000000000011f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100fff85d940000000000000000000000000000000000000111f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100ff") + gotAccessListReceipt := new(Receipt) + if err := gotAccessListReceipt.UnmarshalBinary(accessListBinary); err != nil { + t.Fatalf("unmarshal binary error: %v", err) + } + accessListReceipt.Bloom = CreateBloom(Receipts{accessListReceipt}) + if !reflect.DeepEqual(gotAccessListReceipt, accessListReceipt) { + t.Errorf("receipt unmarshalled from binary mismatch, got %v want %v", gotAccessListReceipt, accessListReceipt) + } + + // 1559 Receipt + eip1559RctBinary := common.FromHex("02f901c58001b9010000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000010000080000000000000000000004000000000000000000000000000040000000000000000000000000000800000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000f8bef85d940000000000000000000000000000000000000011f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100fff85d940000000000000000000000000000000000000111f842a0000000000000000000000000000000000000000000000000000000000000deada0000000000000000000000000000000000000000000000000000000000000beef830100ff") + got1559Receipt := new(Receipt) + if err := got1559Receipt.UnmarshalBinary(eip1559RctBinary); err != nil { + t.Fatalf("unmarshal binary error: %v", err) + } + eip1559Receipt.Bloom = CreateBloom(Receipts{eip1559Receipt}) + if !reflect.DeepEqual(got1559Receipt, eip1559Receipt) { + t.Errorf("receipt unmarshalled from binary mismatch, got %v want %v", got1559Receipt, eip1559Receipt) + } +} + +func clearComputedFieldsOnReceipts(t *testing.T, receipts Receipts) { + t.Helper() + + for _, receipt := range receipts { + clearComputedFieldsOnReceipt(t, receipt) + } +} + +func clearComputedFieldsOnReceipt(t *testing.T, receipt *Receipt) { + t.Helper() + + receipt.TxHash = common.Hash{} + receipt.BlockHash = common.Hash{} + receipt.BlockNumber = big.NewInt(math.MaxUint32) + receipt.TransactionIndex = math.MaxUint32 + receipt.ContractAddress = common.Address{} + receipt.GasUsed = 0 + + clearComputedFieldsOnLogs(t, receipt.Logs) +} + +func clearComputedFieldsOnLogs(t *testing.T, logs []*Log) { + t.Helper() + + for _, log := range logs { + clearComputedFieldsOnLog(t, log) + } +} + +func clearComputedFieldsOnLog(t *testing.T, log *Log) { + t.Helper() + + log.BlockNumber = math.MaxUint32 + log.BlockHash = common.Hash{} + log.TxHash = common.Hash{} + log.TxIndex = math.MaxUint32 + log.Index = math.MaxUint32 +} diff --git a/core/types/state_account.go b/core/types/state_account.go new file mode 100644 index 0000000000..9e03dd9175 --- /dev/null +++ b/core/types/state_account.go @@ -0,0 +1,42 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +// StateAccount is the Ethereum consensus representation of accounts. +// These objects are stored in the main account trie. +type StateAccount struct { + Nonce uint64 + Balance *big.Int + Root common.Hash // merkle root of the storage trie + CodeHash []byte +} diff --git a/core/types/transaction.go b/core/types/transaction.go new file mode 100644 index 0000000000..32fcd6e437 --- /dev/null +++ b/core/types/transaction.go @@ -0,0 +1,657 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "bytes" + "container/heap" + "errors" + "io" + "math/big" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" +) + +var ( + ErrInvalidSig = errors.New("invalid transaction v, r, s values") + ErrUnexpectedProtection = errors.New("transaction type does not supported EIP-155 protected signatures") + ErrInvalidTxType = errors.New("transaction type not valid in this context") + ErrTxTypeNotSupported = errors.New("transaction type not supported") + ErrGasFeeCapTooLow = errors.New("fee cap less than base fee") + errEmptyTypedTx = errors.New("empty typed transaction bytes") +) + +// Transaction types. +const ( + LegacyTxType = iota + AccessListTxType + DynamicFeeTxType +) + +// Transaction is an Ethereum transaction. +type Transaction struct { + inner TxData // Consensus contents of a transaction + time time.Time // Time first seen locally (spam avoidance) + + // caches + hash atomic.Value + size atomic.Value + from atomic.Value +} + +// NewTx creates a new transaction. +func NewTx(inner TxData) *Transaction { + tx := new(Transaction) + tx.setDecoded(inner.copy(), 0) + return tx +} + +// TxData is the underlying data of a transaction. +// +// This is implemented by DynamicFeeTx, LegacyTx and AccessListTx. +type TxData interface { + txType() byte // returns the type ID + copy() TxData // creates a deep copy and initializes all fields + + chainID() *big.Int + accessList() AccessList + data() []byte + gas() uint64 + gasPrice() *big.Int + gasTipCap() *big.Int + gasFeeCap() *big.Int + value() *big.Int + nonce() uint64 + to() *common.Address + + rawSignatureValues() (v, r, s *big.Int) + setSignatureValues(chainID, v, r, s *big.Int) +} + +// EncodeRLP implements rlp.Encoder +func (tx *Transaction) EncodeRLP(w io.Writer) error { + if tx.Type() == LegacyTxType { + return rlp.Encode(w, tx.inner) + } + // It's an EIP-2718 typed TX envelope. + buf := encodeBufferPool.Get().(*bytes.Buffer) + defer encodeBufferPool.Put(buf) + buf.Reset() + if err := tx.encodeTyped(buf); err != nil { + return err + } + return rlp.Encode(w, buf.Bytes()) +} + +// encodeTyped writes the canonical encoding of a typed transaction to w. +func (tx *Transaction) encodeTyped(w *bytes.Buffer) error { + w.WriteByte(tx.Type()) + return rlp.Encode(w, tx.inner) +} + +// MarshalBinary returns the canonical encoding of the transaction. +// For legacy transactions, it returns the RLP encoding. For EIP-2718 typed +// transactions, it returns the type and payload. +func (tx *Transaction) MarshalBinary() ([]byte, error) { + if tx.Type() == LegacyTxType { + return rlp.EncodeToBytes(tx.inner) + } + var buf bytes.Buffer + err := tx.encodeTyped(&buf) + return buf.Bytes(), err +} + +// DecodeRLP implements rlp.Decoder +func (tx *Transaction) DecodeRLP(s *rlp.Stream) error { + kind, size, err := s.Kind() + switch { + case err != nil: + return err + case kind == rlp.List: + // It's a legacy transaction. + var inner LegacyTx + err := s.Decode(&inner) + if err == nil { + tx.setDecoded(&inner, int(rlp.ListSize(size))) + } + return err + case kind == rlp.String: + // It's an EIP-2718 typed TX envelope. + var b []byte + if b, err = s.Bytes(); err != nil { + return err + } + inner, err := tx.decodeTyped(b) + if err == nil { + tx.setDecoded(inner, len(b)) + } + return err + default: + return rlp.ErrExpectedList + } +} + +// UnmarshalBinary decodes the canonical encoding of transactions. +// It supports legacy RLP transactions and EIP2718 typed transactions. +func (tx *Transaction) UnmarshalBinary(b []byte) error { + if len(b) > 0 && b[0] > 0x7f { + // It's a legacy transaction. + var data LegacyTx + err := rlp.DecodeBytes(b, &data) + if err != nil { + return err + } + tx.setDecoded(&data, len(b)) + return nil + } + // It's an EIP2718 typed transaction envelope. + inner, err := tx.decodeTyped(b) + if err != nil { + return err + } + tx.setDecoded(inner, len(b)) + return nil +} + +// decodeTyped decodes a typed transaction from the canonical format. +func (tx *Transaction) decodeTyped(b []byte) (TxData, error) { + if len(b) == 0 { + return nil, errEmptyTypedTx + } + switch b[0] { + case AccessListTxType: + var inner AccessListTx + err := rlp.DecodeBytes(b[1:], &inner) + return &inner, err + case DynamicFeeTxType: + var inner DynamicFeeTx + err := rlp.DecodeBytes(b[1:], &inner) + return &inner, err + default: + return nil, ErrTxTypeNotSupported + } +} + +// setDecoded sets the inner transaction and size after decoding. +func (tx *Transaction) setDecoded(inner TxData, size int) { + tx.inner = inner + tx.time = time.Now() + if size > 0 { + tx.size.Store(common.StorageSize(size)) + } +} + +func sanityCheckSignature(v *big.Int, r *big.Int, s *big.Int, maybeProtected bool) error { + if isProtectedV(v) && !maybeProtected { + return ErrUnexpectedProtection + } + + var plainV byte + if isProtectedV(v) { + chainID := deriveChainId(v).Uint64() + plainV = byte(v.Uint64() - 35 - 2*chainID) + } else if maybeProtected { + // Only EIP-155 signatures can be optionally protected. Since + // we determined this v value is not protected, it must be a + // raw 27 or 28. + plainV = byte(v.Uint64() - 27) + } else { + // If the signature is not optionally protected, we assume it + // must already be equal to the recovery id. + plainV = byte(v.Uint64()) + } + if !crypto.ValidateSignatureValues(plainV, r, s, false) { + return ErrInvalidSig + } + + return nil +} + +func isProtectedV(V *big.Int) bool { + if V.BitLen() <= 8 { + v := V.Uint64() + return v != 27 && v != 28 && v != 1 && v != 0 + } + // anything not 27 or 28 is considered protected + return true +} + +// Protected says whether the transaction is replay-protected. +func (tx *Transaction) Protected() bool { + switch tx := tx.inner.(type) { + case *LegacyTx: + return tx.V != nil && isProtectedV(tx.V) + default: + return true + } +} + +// Type returns the transaction type. +func (tx *Transaction) Type() uint8 { + return tx.inner.txType() +} + +// ChainId returns the EIP155 chain ID of the transaction. The return value will always be +// non-nil. For legacy transactions which are not replay-protected, the return value is +// zero. +func (tx *Transaction) ChainId() *big.Int { + return tx.inner.chainID() +} + +// Data returns the input data of the transaction. +func (tx *Transaction) Data() []byte { return tx.inner.data() } + +// AccessList returns the access list of the transaction. +func (tx *Transaction) AccessList() AccessList { return tx.inner.accessList() } + +// Gas returns the gas limit of the transaction. +func (tx *Transaction) Gas() uint64 { return tx.inner.gas() } + +// GasPrice returns the gas price of the transaction. +func (tx *Transaction) GasPrice() *big.Int { return new(big.Int).Set(tx.inner.gasPrice()) } + +// GasTipCap returns the gasTipCap per gas of the transaction. +func (tx *Transaction) GasTipCap() *big.Int { return new(big.Int).Set(tx.inner.gasTipCap()) } + +// GasFeeCap returns the fee cap per gas of the transaction. +func (tx *Transaction) GasFeeCap() *big.Int { return new(big.Int).Set(tx.inner.gasFeeCap()) } + +// Value returns the ether amount of the transaction. +func (tx *Transaction) Value() *big.Int { return new(big.Int).Set(tx.inner.value()) } + +// Nonce returns the sender account nonce of the transaction. +func (tx *Transaction) Nonce() uint64 { return tx.inner.nonce() } + +// To returns the recipient address of the transaction. +// For contract-creation transactions, To returns nil. +func (tx *Transaction) To() *common.Address { + return copyAddressPtr(tx.inner.to()) +} + +// Cost returns gas * gasPrice + value. +func (tx *Transaction) Cost() *big.Int { + total := new(big.Int).Mul(tx.GasPrice(), new(big.Int).SetUint64(tx.Gas())) + total.Add(total, tx.Value()) + return total +} + +// RawSignatureValues returns the V, R, S signature values of the transaction. +// The return values should not be modified by the caller. +func (tx *Transaction) RawSignatureValues() (v, r, s *big.Int) { + return tx.inner.rawSignatureValues() +} + +// GasFeeCapCmp compares the fee cap of two transactions. +func (tx *Transaction) GasFeeCapCmp(other *Transaction) int { + return tx.inner.gasFeeCap().Cmp(other.inner.gasFeeCap()) +} + +// GasFeeCapIntCmp compares the fee cap of the transaction against the given fee cap. +func (tx *Transaction) GasFeeCapIntCmp(other *big.Int) int { + return tx.inner.gasFeeCap().Cmp(other) +} + +// GasTipCapCmp compares the gasTipCap of two transactions. +func (tx *Transaction) GasTipCapCmp(other *Transaction) int { + return tx.inner.gasTipCap().Cmp(other.inner.gasTipCap()) +} + +// GasTipCapIntCmp compares the gasTipCap of the transaction against the given gasTipCap. +func (tx *Transaction) GasTipCapIntCmp(other *big.Int) int { + return tx.inner.gasTipCap().Cmp(other) +} + +// EffectiveGasTip returns the effective miner gasTipCap for the given base fee. +// Note: if the effective gasTipCap is negative, this method returns both error +// the actual negative value, _and_ ErrGasFeeCapTooLow +func (tx *Transaction) EffectiveGasTip(baseFee *big.Int) (*big.Int, error) { + if baseFee == nil { + return tx.GasTipCap(), nil + } + var err error + gasFeeCap := tx.GasFeeCap() + if gasFeeCap.Cmp(baseFee) == -1 { + err = ErrGasFeeCapTooLow + } + return math.BigMin(tx.GasTipCap(), gasFeeCap.Sub(gasFeeCap, baseFee)), err +} + +// EffectiveGasTipValue is identical to EffectiveGasTip, but does not return an +// error in case the effective gasTipCap is negative +func (tx *Transaction) EffectiveGasTipValue(baseFee *big.Int) *big.Int { + effectiveTip, _ := tx.EffectiveGasTip(baseFee) + return effectiveTip +} + +// EffectiveGasTipCmp compares the effective gasTipCap of two transactions assuming the given base fee. +func (tx *Transaction) EffectiveGasTipCmp(other *Transaction, baseFee *big.Int) int { + if baseFee == nil { + return tx.GasTipCapCmp(other) + } + return tx.EffectiveGasTipValue(baseFee).Cmp(other.EffectiveGasTipValue(baseFee)) +} + +// EffectiveGasTipIntCmp compares the effective gasTipCap of a transaction to the given gasTipCap. +func (tx *Transaction) EffectiveGasTipIntCmp(other *big.Int, baseFee *big.Int) int { + if baseFee == nil { + return tx.GasTipCapIntCmp(other) + } + return tx.EffectiveGasTipValue(baseFee).Cmp(other) +} + +// Hash returns the transaction hash. +func (tx *Transaction) Hash() common.Hash { + if hash := tx.hash.Load(); hash != nil { + return hash.(common.Hash) + } + + var h common.Hash + if tx.Type() == LegacyTxType { + h = rlpHash(tx.inner) + } else { + h = prefixedRlpHash(tx.Type(), tx.inner) + } + tx.hash.Store(h) + return h +} + +// Size returns the true RLP encoded storage size of the transaction, either by +// encoding and returning it, or returning a previously cached value. +func (tx *Transaction) Size() common.StorageSize { + if size := tx.size.Load(); size != nil { + return size.(common.StorageSize) + } + c := writeCounter(0) + rlp.Encode(&c, &tx.inner) + tx.size.Store(common.StorageSize(c)) + return common.StorageSize(c) +} + +// WithSignature returns a new transaction with the given signature. +// This signature needs to be in the [R || S || V] format where V is 0 or 1. +func (tx *Transaction) WithSignature(signer Signer, sig []byte) (*Transaction, error) { + r, s, v, err := signer.SignatureValues(tx, sig) + if err != nil { + return nil, err + } + cpy := tx.inner.copy() + cpy.setSignatureValues(signer.ChainID(), v, r, s) + return &Transaction{inner: cpy, time: tx.time}, nil +} + +// FirstSeen is the time a transaction is first seen. +func (tx *Transaction) FirstSeen() time.Time { + return tx.time +} + +// SetFirstSeen sets overwrites the time a transaction is first seen. +func (tx *Transaction) SetFirstSeen(t time.Time) { + tx.time = t +} + +// Transactions implements DerivableList for transactions. +type Transactions []*Transaction + +// Len returns the length of s. +func (s Transactions) Len() int { return len(s) } + +// EncodeIndex encodes the i'th transaction to w. Note that this does not check for errors +// because we assume that *Transaction will only ever contain valid txs that were either +// constructed by decoding or via public API in this package. +func (s Transactions) EncodeIndex(i int, w *bytes.Buffer) { + tx := s[i] + if tx.Type() == LegacyTxType { + rlp.Encode(w, tx.inner) + } else { + tx.encodeTyped(w) + } +} + +// TxDifference returns a new set which is the difference between a and b. +func TxDifference(a, b Transactions) Transactions { + keep := make(Transactions, 0, len(a)) + + remove := make(map[common.Hash]struct{}) + for _, tx := range b { + remove[tx.Hash()] = struct{}{} + } + + for _, tx := range a { + if _, ok := remove[tx.Hash()]; !ok { + keep = append(keep, tx) + } + } + + return keep +} + +// TxByNonce implements the sort interface to allow sorting a list of transactions +// by their nonces. This is usually only useful for sorting transactions from a +// single account, otherwise a nonce comparison doesn't make much sense. +type TxByNonce Transactions + +func (s TxByNonce) Len() int { return len(s) } +func (s TxByNonce) Less(i, j int) bool { return s[i].Nonce() < s[j].Nonce() } +func (s TxByNonce) Swap(i, j int) { s[i], s[j] = s[j], s[i] } + +// TxWithMinerFee wraps a transaction with its gas price or effective miner gasTipCap +type TxWithMinerFee struct { + Tx *Transaction + minerFee *big.Int +} + +// NewTxWithMinerFee creates a wrapped transaction, calculating the effective +// miner gasTipCap if a base fee is provided. +// Returns error in case of a negative effective miner gasTipCap. +func NewTxWithMinerFee(tx *Transaction, baseFee *big.Int) (*TxWithMinerFee, error) { + minerFee, err := tx.EffectiveGasTip(baseFee) + if err != nil { + return nil, err + } + return &TxWithMinerFee{ + Tx: tx, + minerFee: minerFee, + }, nil +} + +// TxByPriceAndTime implements both the sort and the heap interface, making it useful +// for all at once sorting as well as individually adding and removing elements. +type TxByPriceAndTime []*TxWithMinerFee + +func (s TxByPriceAndTime) Len() int { return len(s) } +func (s TxByPriceAndTime) Less(i, j int) bool { + // If the prices are equal, use the time the transaction was first seen for + // deterministic sorting + cmp := s[i].minerFee.Cmp(s[j].minerFee) + if cmp == 0 { + return s[i].Tx.time.Before(s[j].Tx.time) + } + return cmp > 0 +} +func (s TxByPriceAndTime) Swap(i, j int) { s[i], s[j] = s[j], s[i] } + +func (s *TxByPriceAndTime) Push(x interface{}) { + *s = append(*s, x.(*TxWithMinerFee)) +} + +func (s *TxByPriceAndTime) Pop() interface{} { + old := *s + n := len(old) + x := old[n-1] + *s = old[0 : n-1] + return x +} + +// TransactionsByPriceAndNonce represents a set of transactions that can return +// transactions in a profit-maximizing sorted order, while supporting removing +// entire batches of transactions for non-executable accounts. +type TransactionsByPriceAndNonce struct { + txs map[common.Address]Transactions // Per account nonce-sorted list of transactions + heads TxByPriceAndTime // Next transaction for each unique account (price heap) + signer Signer // Signer for the set of transactions + baseFee *big.Int // Current base fee +} + +// NewTransactionsByPriceAndNonce creates a transaction set that can retrieve +// price sorted transactions in a nonce-honouring way. +// +// Note, the input map is reowned so the caller should not interact any more with +// if after providing it to the constructor. +func NewTransactionsByPriceAndNonce(signer Signer, txs map[common.Address]Transactions, baseFee *big.Int) *TransactionsByPriceAndNonce { + // Initialize a price and received time based heap with the head transactions + heads := make(TxByPriceAndTime, 0, len(txs)) + for from, accTxs := range txs { + acc, _ := Sender(signer, accTxs[0]) + wrapped, err := NewTxWithMinerFee(accTxs[0], baseFee) + // Remove transaction if sender doesn't match from, or if wrapping fails. + if acc != from || err != nil { + delete(txs, from) + continue + } + heads = append(heads, wrapped) + txs[from] = accTxs[1:] + } + heap.Init(&heads) + + // Assemble and return the transaction set + return &TransactionsByPriceAndNonce{ + txs: txs, + heads: heads, + signer: signer, + baseFee: baseFee, + } +} + +// Peek returns the next transaction by price. +func (t *TransactionsByPriceAndNonce) Peek() *Transaction { + if len(t.heads) == 0 { + return nil + } + return t.heads[0].Tx +} + +// Shift replaces the current best head with the next one from the same account. +func (t *TransactionsByPriceAndNonce) Shift() { + acc, _ := Sender(t.signer, t.heads[0].Tx) + if txs, ok := t.txs[acc]; ok && len(txs) > 0 { + if wrapped, err := NewTxWithMinerFee(txs[0], t.baseFee); err == nil { + t.heads[0], t.txs[acc] = wrapped, txs[1:] + heap.Fix(&t.heads, 0) + return + } + } + heap.Pop(&t.heads) +} + +// Pop removes the best transaction, *not* replacing it with the next one from +// the same account. This should be used when a transaction cannot be executed +// and hence all subsequent ones should be discarded from the same account. +func (t *TransactionsByPriceAndNonce) Pop() { + heap.Pop(&t.heads) +} + +// Message is a fully derived transaction and implements core.Message +// +// NOTE: In a future PR this will be removed. +type Message struct { + to *common.Address + from common.Address + nonce uint64 + amount *big.Int + gasLimit uint64 + gasPrice *big.Int + gasFeeCap *big.Int + gasTipCap *big.Int + data []byte + accessList AccessList + isFake bool +} + +func NewMessage(from common.Address, to *common.Address, nonce uint64, amount *big.Int, gasLimit uint64, gasPrice, gasFeeCap, gasTipCap *big.Int, data []byte, accessList AccessList, isFake bool) Message { + return Message{ + from: from, + to: to, + nonce: nonce, + amount: amount, + gasLimit: gasLimit, + gasPrice: gasPrice, + gasFeeCap: gasFeeCap, + gasTipCap: gasTipCap, + data: data, + accessList: accessList, + isFake: isFake, + } +} + +// AsMessage returns the transaction as a core.Message. +func (tx *Transaction) AsMessage(s Signer, baseFee *big.Int) (Message, error) { + msg := Message{ + nonce: tx.Nonce(), + gasLimit: tx.Gas(), + gasPrice: new(big.Int).Set(tx.GasPrice()), + gasFeeCap: new(big.Int).Set(tx.GasFeeCap()), + gasTipCap: new(big.Int).Set(tx.GasTipCap()), + to: tx.To(), + amount: tx.Value(), + data: tx.Data(), + accessList: tx.AccessList(), + isFake: false, + } + // If baseFee provided, set gasPrice to effectiveGasPrice. + if baseFee != nil { + msg.gasPrice = math.BigMin(msg.gasPrice.Add(msg.gasTipCap, baseFee), msg.gasFeeCap) + } + var err error + msg.from, err = Sender(s, tx) + return msg, err +} + +func (m Message) From() common.Address { return m.from } +func (m Message) To() *common.Address { return m.to } +func (m Message) GasPrice() *big.Int { return m.gasPrice } +func (m Message) GasFeeCap() *big.Int { return m.gasFeeCap } +func (m Message) GasTipCap() *big.Int { return m.gasTipCap } +func (m Message) Value() *big.Int { return m.amount } +func (m Message) Gas() uint64 { return m.gasLimit } +func (m Message) Nonce() uint64 { return m.nonce } +func (m Message) Data() []byte { return m.data } +func (m Message) AccessList() AccessList { return m.accessList } +func (m Message) IsFake() bool { return m.isFake } + +// copyAddressPtr copies an address. +func copyAddressPtr(a *common.Address) *common.Address { + if a == nil { + return nil + } + cpy := *a + return &cpy +} diff --git a/core/types/transaction_marshalling.go b/core/types/transaction_marshalling.go new file mode 100644 index 0000000000..b5eaf017ba --- /dev/null +++ b/core/types/transaction_marshalling.go @@ -0,0 +1,285 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +// txJSON is the JSON representation of transactions. +type txJSON struct { + Type hexutil.Uint64 `json:"type"` + + // Common transaction fields: + Nonce *hexutil.Uint64 `json:"nonce"` + GasPrice *hexutil.Big `json:"gasPrice"` + MaxPriorityFeePerGas *hexutil.Big `json:"maxPriorityFeePerGas"` + MaxFeePerGas *hexutil.Big `json:"maxFeePerGas"` + Gas *hexutil.Uint64 `json:"gas"` + Value *hexutil.Big `json:"value"` + Data *hexutil.Bytes `json:"input"` + V *hexutil.Big `json:"v"` + R *hexutil.Big `json:"r"` + S *hexutil.Big `json:"s"` + To *common.Address `json:"to"` + + // Access list transaction fields: + ChainID *hexutil.Big `json:"chainId,omitempty"` + AccessList *AccessList `json:"accessList,omitempty"` + + // Only used for encoding: + Hash common.Hash `json:"hash"` +} + +// MarshalJSON marshals as JSON with a hash. +func (t *Transaction) MarshalJSON() ([]byte, error) { + var enc txJSON + // These are set for all tx types. + enc.Hash = t.Hash() + enc.Type = hexutil.Uint64(t.Type()) + + // Other fields are set conditionally depending on tx type. + switch tx := t.inner.(type) { + case *LegacyTx: + enc.Nonce = (*hexutil.Uint64)(&tx.Nonce) + enc.Gas = (*hexutil.Uint64)(&tx.Gas) + enc.GasPrice = (*hexutil.Big)(tx.GasPrice) + enc.Value = (*hexutil.Big)(tx.Value) + enc.Data = (*hexutil.Bytes)(&tx.Data) + enc.To = t.To() + enc.V = (*hexutil.Big)(tx.V) + enc.R = (*hexutil.Big)(tx.R) + enc.S = (*hexutil.Big)(tx.S) + case *AccessListTx: + enc.ChainID = (*hexutil.Big)(tx.ChainID) + enc.AccessList = &tx.AccessList + enc.Nonce = (*hexutil.Uint64)(&tx.Nonce) + enc.Gas = (*hexutil.Uint64)(&tx.Gas) + enc.GasPrice = (*hexutil.Big)(tx.GasPrice) + enc.Value = (*hexutil.Big)(tx.Value) + enc.Data = (*hexutil.Bytes)(&tx.Data) + enc.To = t.To() + enc.V = (*hexutil.Big)(tx.V) + enc.R = (*hexutil.Big)(tx.R) + enc.S = (*hexutil.Big)(tx.S) + case *DynamicFeeTx: + enc.ChainID = (*hexutil.Big)(tx.ChainID) + enc.AccessList = &tx.AccessList + enc.Nonce = (*hexutil.Uint64)(&tx.Nonce) + enc.Gas = (*hexutil.Uint64)(&tx.Gas) + enc.MaxFeePerGas = (*hexutil.Big)(tx.GasFeeCap) + enc.MaxPriorityFeePerGas = (*hexutil.Big)(tx.GasTipCap) + enc.Value = (*hexutil.Big)(tx.Value) + enc.Data = (*hexutil.Bytes)(&tx.Data) + enc.To = t.To() + enc.V = (*hexutil.Big)(tx.V) + enc.R = (*hexutil.Big)(tx.R) + enc.S = (*hexutil.Big)(tx.S) + } + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (t *Transaction) UnmarshalJSON(input []byte) error { + var dec txJSON + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + + // Decode / verify fields according to transaction type. + var inner TxData + switch dec.Type { + case LegacyTxType: + var itx LegacyTx + inner = &itx + if dec.To != nil { + itx.To = dec.To + } + if dec.Nonce == nil { + return errors.New("missing required field 'nonce' in transaction") + } + itx.Nonce = uint64(*dec.Nonce) + if dec.GasPrice == nil { + return errors.New("missing required field 'gasPrice' in transaction") + } + itx.GasPrice = (*big.Int)(dec.GasPrice) + if dec.Gas == nil { + return errors.New("missing required field 'gas' in transaction") + } + itx.Gas = uint64(*dec.Gas) + if dec.Value == nil { + return errors.New("missing required field 'value' in transaction") + } + itx.Value = (*big.Int)(dec.Value) + if dec.Data == nil { + return errors.New("missing required field 'input' in transaction") + } + itx.Data = *dec.Data + if dec.V == nil { + return errors.New("missing required field 'v' in transaction") + } + itx.V = (*big.Int)(dec.V) + if dec.R == nil { + return errors.New("missing required field 'r' in transaction") + } + itx.R = (*big.Int)(dec.R) + if dec.S == nil { + return errors.New("missing required field 's' in transaction") + } + itx.S = (*big.Int)(dec.S) + withSignature := itx.V.Sign() != 0 || itx.R.Sign() != 0 || itx.S.Sign() != 0 + if withSignature { + if err := sanityCheckSignature(itx.V, itx.R, itx.S, true); err != nil { + return err + } + } + + case AccessListTxType: + var itx AccessListTx + inner = &itx + // Access list is optional for now. + if dec.AccessList != nil { + itx.AccessList = *dec.AccessList + } + if dec.ChainID == nil { + return errors.New("missing required field 'chainId' in transaction") + } + itx.ChainID = (*big.Int)(dec.ChainID) + if dec.To != nil { + itx.To = dec.To + } + if dec.Nonce == nil { + return errors.New("missing required field 'nonce' in transaction") + } + itx.Nonce = uint64(*dec.Nonce) + if dec.GasPrice == nil { + return errors.New("missing required field 'gasPrice' in transaction") + } + itx.GasPrice = (*big.Int)(dec.GasPrice) + if dec.Gas == nil { + return errors.New("missing required field 'gas' in transaction") + } + itx.Gas = uint64(*dec.Gas) + if dec.Value == nil { + return errors.New("missing required field 'value' in transaction") + } + itx.Value = (*big.Int)(dec.Value) + if dec.Data == nil { + return errors.New("missing required field 'input' in transaction") + } + itx.Data = *dec.Data + if dec.V == nil { + return errors.New("missing required field 'v' in transaction") + } + itx.V = (*big.Int)(dec.V) + if dec.R == nil { + return errors.New("missing required field 'r' in transaction") + } + itx.R = (*big.Int)(dec.R) + if dec.S == nil { + return errors.New("missing required field 's' in transaction") + } + itx.S = (*big.Int)(dec.S) + withSignature := itx.V.Sign() != 0 || itx.R.Sign() != 0 || itx.S.Sign() != 0 + if withSignature { + if err := sanityCheckSignature(itx.V, itx.R, itx.S, false); err != nil { + return err + } + } + + case DynamicFeeTxType: + var itx DynamicFeeTx + inner = &itx + // Access list is optional for now. + if dec.AccessList != nil { + itx.AccessList = *dec.AccessList + } + if dec.ChainID == nil { + return errors.New("missing required field 'chainId' in transaction") + } + itx.ChainID = (*big.Int)(dec.ChainID) + if dec.To != nil { + itx.To = dec.To + } + if dec.Nonce == nil { + return errors.New("missing required field 'nonce' in transaction") + } + itx.Nonce = uint64(*dec.Nonce) + if dec.MaxPriorityFeePerGas == nil { + return errors.New("missing required field 'maxPriorityFeePerGas' for txdata") + } + itx.GasTipCap = (*big.Int)(dec.MaxPriorityFeePerGas) + if dec.MaxFeePerGas == nil { + return errors.New("missing required field 'maxFeePerGas' for txdata") + } + itx.GasFeeCap = (*big.Int)(dec.MaxFeePerGas) + if dec.Gas == nil { + return errors.New("missing required field 'gas' for txdata") + } + itx.Gas = uint64(*dec.Gas) + if dec.Value == nil { + return errors.New("missing required field 'value' in transaction") + } + itx.Value = (*big.Int)(dec.Value) + if dec.Data == nil { + return errors.New("missing required field 'input' in transaction") + } + itx.Data = *dec.Data + if dec.V == nil { + return errors.New("missing required field 'v' in transaction") + } + itx.V = (*big.Int)(dec.V) + if dec.R == nil { + return errors.New("missing required field 'r' in transaction") + } + itx.R = (*big.Int)(dec.R) + if dec.S == nil { + return errors.New("missing required field 's' in transaction") + } + itx.S = (*big.Int)(dec.S) + withSignature := itx.V.Sign() != 0 || itx.R.Sign() != 0 || itx.S.Sign() != 0 + if withSignature { + if err := sanityCheckSignature(itx.V, itx.R, itx.S, false); err != nil { + return err + } + } + + default: + return ErrTxTypeNotSupported + } + + // Now set the inner transaction. + t.setDecoded(inner, 0) + + // TODO: check hash here? + return nil +} diff --git a/core/types/transaction_signing.go b/core/types/transaction_signing.go new file mode 100644 index 0000000000..3c204cf469 --- /dev/null +++ b/core/types/transaction_signing.go @@ -0,0 +1,523 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "crypto/ecdsa" + "errors" + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +var ErrInvalidChainId = errors.New("invalid chain id for signer") + +// sigCache is used to cache the derived sender and contains +// the signer used to derive it. +type sigCache struct { + signer Signer + from common.Address +} + +// MakeSigner returns a Signer based on the given chain config and block number or time. +func MakeSigner(config *params.ChainConfig, blockNumber *big.Int, blockTime *big.Int) Signer { + switch { + case config.IsSubnetEVM(blockTime): + return NewLondonSigner(config.ChainID) + case config.IsEIP155(blockNumber): + return NewEIP155Signer(config.ChainID) + case config.IsHomestead(blockNumber): + return HomesteadSigner{} + default: + return FrontierSigner{} + } +} + +// LatestSigner returns the 'most permissive' Signer available for the given chain +// configuration. Specifically, this enables support of EIP-155 replay protection and +// EIP-2930 access list transactions when their respective forks are scheduled to occur at +// any block number in the chain config. +// +// Use this in transaction-handling code where the current block number is unknown. If you +// have the current block number available, use MakeSigner instead. +func LatestSigner(config *params.ChainConfig) Signer { + if config.ChainID != nil { + if config.SubnetEVMTimestamp != nil { + return NewLondonSigner(config.ChainID) + } + if config.EIP155Block != nil { + return NewEIP155Signer(config.ChainID) + } + } + return HomesteadSigner{} +} + +// LatestSignerForChainID returns the 'most permissive' Signer available. Specifically, +// this enables support for EIP-155 replay protection and all implemented EIP-2718 +// transaction types if chainID is non-nil. +// +// Use this in transaction-handling code where the current block number and fork +// configuration are unknown. If you have a ChainConfig, use LatestSigner instead. +// If you have a ChainConfig and know the current block number, use MakeSigner instead. +func LatestSignerForChainID(chainID *big.Int) Signer { + if chainID == nil { + return HomesteadSigner{} + } + return NewLondonSigner(chainID) +} + +// SignTx signs the transaction using the given signer and private key. +func SignTx(tx *Transaction, s Signer, prv *ecdsa.PrivateKey) (*Transaction, error) { + h := s.Hash(tx) + sig, err := crypto.Sign(h[:], prv) + if err != nil { + return nil, err + } + return tx.WithSignature(s, sig) +} + +// SignNewTx creates a transaction and signs it. +func SignNewTx(prv *ecdsa.PrivateKey, s Signer, txdata TxData) (*Transaction, error) { + tx := NewTx(txdata) + h := s.Hash(tx) + sig, err := crypto.Sign(h[:], prv) + if err != nil { + return nil, err + } + return tx.WithSignature(s, sig) +} + +// MustSignNewTx creates a transaction and signs it. +// This panics if the transaction cannot be signed. +func MustSignNewTx(prv *ecdsa.PrivateKey, s Signer, txdata TxData) *Transaction { + tx, err := SignNewTx(prv, s, txdata) + if err != nil { + panic(err) + } + return tx +} + +// Sender returns the address derived from the signature (V, R, S) using secp256k1 +// elliptic curve and an error if it failed deriving or upon an incorrect +// signature. +// +// Sender may cache the address, allowing it to be used regardless of +// signing method. The cache is invalidated if the cached signer does +// not match the signer used in the current call. +func Sender(signer Signer, tx *Transaction) (common.Address, error) { + if sc := tx.from.Load(); sc != nil { + sigCache := sc.(sigCache) + // If the signer used to derive from in a previous + // call is not the same as used current, invalidate + // the cache. + if sigCache.signer.Equal(signer) { + return sigCache.from, nil + } + } + + addr, err := signer.Sender(tx) + if err != nil { + return common.Address{}, err + } + tx.from.Store(sigCache{signer: signer, from: addr}) + return addr, nil +} + +// Signer encapsulates transaction signature handling. The name of this type is slightly +// misleading because Signers don't actually sign, they're just for validating and +// processing of signatures. +// +// Note that this interface is not a stable API and may change at any time to accommodate +// new protocol rules. +type Signer interface { + // Sender returns the sender address of the transaction. + Sender(tx *Transaction) (common.Address, error) + + // SignatureValues returns the raw R, S, V values corresponding to the + // given signature. + SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error) + ChainID() *big.Int + + // Hash returns 'signature hash', i.e. the transaction hash that is signed by the + // private key. This hash does not uniquely identify the transaction. + Hash(tx *Transaction) common.Hash + + // Equal returns true if the given signer is the same as the receiver. + Equal(Signer) bool +} + +type londonSigner struct{ eip2930Signer } + +// NewLondonSigner returns a signer that accepts +// - EIP-1559 dynamic fee transactions +// - EIP-2930 access list transactions, +// - EIP-155 replay protected transactions, and +// - legacy Homestead transactions. +func NewLondonSigner(chainId *big.Int) Signer { + return londonSigner{eip2930Signer{NewEIP155Signer(chainId)}} +} + +func (s londonSigner) Sender(tx *Transaction) (common.Address, error) { + if tx.Type() != DynamicFeeTxType { + return s.eip2930Signer.Sender(tx) + } + V, R, S := tx.RawSignatureValues() + // DynamicFee txs are defined to use 0 and 1 as their recovery + // id, add 27 to become equivalent to unprotected Homestead signatures. + V = new(big.Int).Add(V, big.NewInt(27)) + if tx.ChainId().Cmp(s.chainId) != 0 { + return common.Address{}, ErrInvalidChainId + } + return recoverPlain(s.Hash(tx), R, S, V, true) +} + +func (s londonSigner) Equal(s2 Signer) bool { + x, ok := s2.(londonSigner) + return ok && x.chainId.Cmp(s.chainId) == 0 +} + +func (s londonSigner) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big.Int, err error) { + txdata, ok := tx.inner.(*DynamicFeeTx) + if !ok { + return s.eip2930Signer.SignatureValues(tx, sig) + } + // Check that chain ID of tx matches the signer. We also accept ID zero here, + // because it indicates that the chain ID was not specified in the tx. + if txdata.ChainID.Sign() != 0 && txdata.ChainID.Cmp(s.chainId) != 0 { + return nil, nil, nil, ErrInvalidChainId + } + R, S, _ = decodeSignature(sig) + V = big.NewInt(int64(sig[64])) + return R, S, V, nil +} + +// Hash returns the hash to be signed by the sender. +// It does not uniquely identify the transaction. +func (s londonSigner) Hash(tx *Transaction) common.Hash { + if tx.Type() != DynamicFeeTxType { + return s.eip2930Signer.Hash(tx) + } + return prefixedRlpHash( + tx.Type(), + []interface{}{ + s.chainId, + tx.Nonce(), + tx.GasTipCap(), + tx.GasFeeCap(), + tx.Gas(), + tx.To(), + tx.Value(), + tx.Data(), + tx.AccessList(), + }) +} + +type eip2930Signer struct{ EIP155Signer } + +// NewEIP2930Signer returns a signer that accepts EIP-2930 access list transactions, +// EIP-155 replay protected transactions, and legacy Homestead transactions. +func NewEIP2930Signer(chainId *big.Int) Signer { + return eip2930Signer{NewEIP155Signer(chainId)} +} + +func (s eip2930Signer) ChainID() *big.Int { + return s.chainId +} + +func (s eip2930Signer) Equal(s2 Signer) bool { + x, ok := s2.(eip2930Signer) + return ok && x.chainId.Cmp(s.chainId) == 0 +} + +func (s eip2930Signer) Sender(tx *Transaction) (common.Address, error) { + V, R, S := tx.RawSignatureValues() + switch tx.Type() { + case LegacyTxType: + if !tx.Protected() { + return HomesteadSigner{}.Sender(tx) + } + V = new(big.Int).Sub(V, s.chainIdMul) + V.Sub(V, big8) + case AccessListTxType: + // AL txs are defined to use 0 and 1 as their recovery + // id, add 27 to become equivalent to unprotected Homestead signatures. + V = new(big.Int).Add(V, big.NewInt(27)) + default: + return common.Address{}, ErrTxTypeNotSupported + } + if tx.ChainId().Cmp(s.chainId) != 0 { + return common.Address{}, ErrInvalidChainId + } + return recoverPlain(s.Hash(tx), R, S, V, true) +} + +func (s eip2930Signer) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big.Int, err error) { + switch txdata := tx.inner.(type) { + case *LegacyTx: + return s.EIP155Signer.SignatureValues(tx, sig) + case *AccessListTx: + // Check that chain ID of tx matches the signer. We also accept ID zero here, + // because it indicates that the chain ID was not specified in the tx. + if txdata.ChainID.Sign() != 0 && txdata.ChainID.Cmp(s.chainId) != 0 { + return nil, nil, nil, ErrInvalidChainId + } + R, S, _ = decodeSignature(sig) + V = big.NewInt(int64(sig[64])) + default: + return nil, nil, nil, ErrTxTypeNotSupported + } + return R, S, V, nil +} + +// Hash returns the hash to be signed by the sender. +// It does not uniquely identify the transaction. +func (s eip2930Signer) Hash(tx *Transaction) common.Hash { + switch tx.Type() { + case LegacyTxType: + return rlpHash([]interface{}{ + tx.Nonce(), + tx.GasPrice(), + tx.Gas(), + tx.To(), + tx.Value(), + tx.Data(), + s.chainId, uint(0), uint(0), + }) + case AccessListTxType: + return prefixedRlpHash( + tx.Type(), + []interface{}{ + s.chainId, + tx.Nonce(), + tx.GasPrice(), + tx.Gas(), + tx.To(), + tx.Value(), + tx.Data(), + tx.AccessList(), + }) + default: + // This _should_ not happen, but in case someone sends in a bad + // json struct via RPC, it's probably more prudent to return an + // empty hash instead of killing the node with a panic + // panic("Unsupported transaction type: %d", tx.typ) + return common.Hash{} + } +} + +// EIP155Signer implements Signer using the EIP-155 rules. This accepts transactions which +// are replay-protected as well as unprotected homestead transactions. +type EIP155Signer struct { + chainId, chainIdMul *big.Int +} + +func NewEIP155Signer(chainId *big.Int) EIP155Signer { + if chainId == nil { + chainId = new(big.Int) + } + return EIP155Signer{ + chainId: chainId, + chainIdMul: new(big.Int).Mul(chainId, big.NewInt(2)), + } +} + +func (s EIP155Signer) ChainID() *big.Int { + return s.chainId +} + +func (s EIP155Signer) Equal(s2 Signer) bool { + eip155, ok := s2.(EIP155Signer) + return ok && eip155.chainId.Cmp(s.chainId) == 0 +} + +var big8 = big.NewInt(8) + +func (s EIP155Signer) Sender(tx *Transaction) (common.Address, error) { + if tx.Type() != LegacyTxType { + return common.Address{}, ErrTxTypeNotSupported + } + if !tx.Protected() { + return HomesteadSigner{}.Sender(tx) + } + if tx.ChainId().Cmp(s.chainId) != 0 { + return common.Address{}, ErrInvalidChainId + } + V, R, S := tx.RawSignatureValues() + V = new(big.Int).Sub(V, s.chainIdMul) + V.Sub(V, big8) + return recoverPlain(s.Hash(tx), R, S, V, true) +} + +// SignatureValues returns signature values. This signature +// needs to be in the [R || S || V] format where V is 0 or 1. +func (s EIP155Signer) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big.Int, err error) { + if tx.Type() != LegacyTxType { + return nil, nil, nil, ErrTxTypeNotSupported + } + R, S, V = decodeSignature(sig) + if s.chainId.Sign() != 0 { + V = big.NewInt(int64(sig[64] + 35)) + V.Add(V, s.chainIdMul) + } + return R, S, V, nil +} + +// Hash returns the hash to be signed by the sender. +// It does not uniquely identify the transaction. +func (s EIP155Signer) Hash(tx *Transaction) common.Hash { + return rlpHash([]interface{}{ + tx.Nonce(), + tx.GasPrice(), + tx.Gas(), + tx.To(), + tx.Value(), + tx.Data(), + s.chainId, uint(0), uint(0), + }) +} + +// HomesteadTransaction implements TransactionInterface using the +// homestead rules. +type HomesteadSigner struct{ FrontierSigner } + +func (s HomesteadSigner) ChainID() *big.Int { + return nil +} + +func (s HomesteadSigner) Equal(s2 Signer) bool { + _, ok := s2.(HomesteadSigner) + return ok +} + +// SignatureValues returns signature values. This signature +// needs to be in the [R || S || V] format where V is 0 or 1. +func (hs HomesteadSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error) { + return hs.FrontierSigner.SignatureValues(tx, sig) +} + +func (hs HomesteadSigner) Sender(tx *Transaction) (common.Address, error) { + if tx.Type() != LegacyTxType { + return common.Address{}, ErrTxTypeNotSupported + } + v, r, s := tx.RawSignatureValues() + return recoverPlain(hs.Hash(tx), r, s, v, true) +} + +type FrontierSigner struct{} + +func (s FrontierSigner) ChainID() *big.Int { + return nil +} + +func (s FrontierSigner) Equal(s2 Signer) bool { + _, ok := s2.(FrontierSigner) + return ok +} + +func (fs FrontierSigner) Sender(tx *Transaction) (common.Address, error) { + if tx.Type() != LegacyTxType { + return common.Address{}, ErrTxTypeNotSupported + } + v, r, s := tx.RawSignatureValues() + return recoverPlain(fs.Hash(tx), r, s, v, false) +} + +// SignatureValues returns signature values. This signature +// needs to be in the [R || S || V] format where V is 0 or 1. +func (fs FrontierSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error) { + if tx.Type() != LegacyTxType { + return nil, nil, nil, ErrTxTypeNotSupported + } + r, s, v = decodeSignature(sig) + return r, s, v, nil +} + +// Hash returns the hash to be signed by the sender. +// It does not uniquely identify the transaction. +func (fs FrontierSigner) Hash(tx *Transaction) common.Hash { + return rlpHash([]interface{}{ + tx.Nonce(), + tx.GasPrice(), + tx.Gas(), + tx.To(), + tx.Value(), + tx.Data(), + }) +} + +func decodeSignature(sig []byte) (r, s, v *big.Int) { + if len(sig) != crypto.SignatureLength { + panic(fmt.Sprintf("wrong size for signature: got %d, want %d", len(sig), crypto.SignatureLength)) + } + r = new(big.Int).SetBytes(sig[:32]) + s = new(big.Int).SetBytes(sig[32:64]) + v = new(big.Int).SetBytes([]byte{sig[64] + 27}) + return r, s, v +} + +func recoverPlain(sighash common.Hash, R, S, Vb *big.Int, homestead bool) (common.Address, error) { + if Vb.BitLen() > 8 { + return common.Address{}, ErrInvalidSig + } + V := byte(Vb.Uint64() - 27) + if !crypto.ValidateSignatureValues(V, R, S, homestead) { + return common.Address{}, ErrInvalidSig + } + // encode the signature in uncompressed format + r, s := R.Bytes(), S.Bytes() + sig := make([]byte, crypto.SignatureLength) + copy(sig[32-len(r):32], r) + copy(sig[64-len(s):64], s) + sig[64] = V + // recover the public key from the signature + pub, err := crypto.Ecrecover(sighash[:], sig) + if err != nil { + return common.Address{}, err + } + if len(pub) == 0 || pub[0] != 4 { + return common.Address{}, errors.New("invalid public key") + } + var addr common.Address + copy(addr[:], crypto.Keccak256(pub[1:])[12:]) + return addr, nil +} + +// deriveChainId derives the chain id from the given v parameter +func deriveChainId(v *big.Int) *big.Int { + if v.BitLen() <= 64 { + v := v.Uint64() + if v == 27 || v == 28 { + return new(big.Int) + } + return new(big.Int).SetUint64((v - 35) / 2) + } + v = new(big.Int).Sub(v, big.NewInt(35)) + return v.Div(v, big.NewInt(2)) +} diff --git a/core/types/transaction_signing_test.go b/core/types/transaction_signing_test.go new file mode 100644 index 0000000000..4720b9bfb7 --- /dev/null +++ b/core/types/transaction_signing_test.go @@ -0,0 +1,148 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "math/big" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" +) + +func TestEIP155Signing(t *testing.T) { + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + + signer := NewEIP155Signer(big.NewInt(18)) + tx, err := SignTx(NewTransaction(0, addr, new(big.Int), 0, new(big.Int), nil), signer, key) + if err != nil { + t.Fatal(err) + } + + from, err := Sender(signer, tx) + if err != nil { + t.Fatal(err) + } + if from != addr { + t.Errorf("exected from and address to be equal. Got %x want %x", from, addr) + } +} + +func TestEIP155ChainId(t *testing.T) { + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + + signer := NewEIP155Signer(big.NewInt(18)) + tx, err := SignTx(NewTransaction(0, addr, new(big.Int), 0, new(big.Int), nil), signer, key) + if err != nil { + t.Fatal(err) + } + if !tx.Protected() { + t.Fatal("expected tx to be protected") + } + + if tx.ChainId().Cmp(signer.chainId) != 0 { + t.Error("expected chainId to be", signer.chainId, "got", tx.ChainId()) + } + + tx = NewTransaction(0, addr, new(big.Int), 0, new(big.Int), nil) + tx, err = SignTx(tx, HomesteadSigner{}, key) + if err != nil { + t.Fatal(err) + } + + if tx.Protected() { + t.Error("didn't expect tx to be protected") + } + + if tx.ChainId().Sign() != 0 { + t.Error("expected chain id to be 0 got", tx.ChainId()) + } +} + +func TestEIP155SigningVitalik(t *testing.T) { + // Test vectors come from http://vitalik.ca/files/eip155_testvec.txt + for i, test := range []struct { + txRlp, addr string + }{ + {"f864808504a817c800825208943535353535353535353535353535353535353535808025a0044852b2a670ade5407e78fb2863c51de9fcb96542a07186fe3aeda6bb8a116da0044852b2a670ade5407e78fb2863c51de9fcb96542a07186fe3aeda6bb8a116d", "0xf0f6f18bca1b28cd68e4357452947e021241e9ce"}, + {"f864018504a817c80182a410943535353535353535353535353535353535353535018025a0489efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bcaa0489efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6", "0x23ef145a395ea3fa3deb533b8a9e1b4c6c25d112"}, + {"f864028504a817c80282f618943535353535353535353535353535353535353535088025a02d7c5bef027816a800da1736444fb58a807ef4c9603b7848673f7e3a68eb14a5a02d7c5bef027816a800da1736444fb58a807ef4c9603b7848673f7e3a68eb14a5", "0x2e485e0c23b4c3c542628a5f672eeab0ad4888be"}, + {"f865038504a817c803830148209435353535353535353535353535353535353535351b8025a02a80e1ef1d7842f27f2e6be0972bb708b9a135c38860dbe73c27c3486c34f4e0a02a80e1ef1d7842f27f2e6be0972bb708b9a135c38860dbe73c27c3486c34f4de", "0x82a88539669a3fd524d669e858935de5e5410cf0"}, + {"f865048504a817c80483019a28943535353535353535353535353535353535353535408025a013600b294191fc92924bb3ce4b969c1e7e2bab8f4c93c3fc6d0a51733df3c063a013600b294191fc92924bb3ce4b969c1e7e2bab8f4c93c3fc6d0a51733df3c060", "0xf9358f2538fd5ccfeb848b64a96b743fcc930554"}, + {"f865058504a817c8058301ec309435353535353535353535353535353535353535357d8025a04eebf77a833b30520287ddd9478ff51abbdffa30aa90a8d655dba0e8a79ce0c1a04eebf77a833b30520287ddd9478ff51abbdffa30aa90a8d655dba0e8a79ce0c1", "0xa8f7aba377317440bc5b26198a363ad22af1f3a4"}, + {"f866068504a817c80683023e3894353535353535353535353535353535353535353581d88025a06455bf8ea6e7463a1046a0b52804526e119b4bf5136279614e0b1e8e296a4e2fa06455bf8ea6e7463a1046a0b52804526e119b4bf5136279614e0b1e8e296a4e2d", "0xf1f571dc362a0e5b2696b8e775f8491d3e50de35"}, + {"f867078504a817c807830290409435353535353535353535353535353535353535358201578025a052f1a9b320cab38e5da8a8f97989383aab0a49165fc91c737310e4f7e9821021a052f1a9b320cab38e5da8a8f97989383aab0a49165fc91c737310e4f7e9821021", "0xd37922162ab7cea97c97a87551ed02c9a38b7332"}, + {"f867088504a817c8088302e2489435353535353535353535353535353535353535358202008025a064b1702d9298fee62dfeccc57d322a463ad55ca201256d01f62b45b2e1c21c12a064b1702d9298fee62dfeccc57d322a463ad55ca201256d01f62b45b2e1c21c10", "0x9bddad43f934d313c2b79ca28a432dd2b7281029"}, + {"f867098504a817c809830334509435353535353535353535353535353535353535358202d98025a052f8f61201b2b11a78d6e866abc9c3db2ae8631fa656bfe5cb53668255367afba052f8f61201b2b11a78d6e866abc9c3db2ae8631fa656bfe5cb53668255367afb", "0x3c24d7329e92f84f08556ceb6df1cdb0104ca49f"}, + } { + signer := NewEIP155Signer(big.NewInt(1)) + + var tx *Transaction + err := rlp.DecodeBytes(common.Hex2Bytes(test.txRlp), &tx) + if err != nil { + t.Errorf("%d: %v", i, err) + continue + } + + from, err := Sender(signer, tx) + if err != nil { + t.Errorf("%d: %v", i, err) + continue + } + + addr := common.HexToAddress(test.addr) + if from != addr { + t.Errorf("%d: expected %x got %x", i, addr, from) + } + + } +} + +func TestChainId(t *testing.T) { + key, _ := defaultTestKey() + + tx := NewTransaction(0, common.Address{}, new(big.Int), 0, new(big.Int), nil) + + var err error + tx, err = SignTx(tx, NewEIP155Signer(big.NewInt(1)), key) + if err != nil { + t.Fatal(err) + } + + _, err = Sender(NewEIP155Signer(big.NewInt(2)), tx) + if err != ErrInvalidChainId { + t.Error("expected error:", ErrInvalidChainId) + } + + _, err = Sender(NewEIP155Signer(big.NewInt(1)), tx) + if err != nil { + t.Error("expected no error") + } +} diff --git a/core/types/transaction_test.go b/core/types/transaction_test.go new file mode 100644 index 0000000000..762c85d683 --- /dev/null +++ b/core/types/transaction_test.go @@ -0,0 +1,539 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "bytes" + "crypto/ecdsa" + "encoding/json" + "fmt" + "math/big" + "math/rand" + "reflect" + "testing" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" +) + +// The values in those tests are from the Transaction Tests +// at github.com/ethereum/tests. +var ( + testAddr = common.HexToAddress("b94f5374fce5edbc8e2a8697c15331677e6ebf0b") + + emptyTx = NewTransaction( + 0, + common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87"), + big.NewInt(0), 0, big.NewInt(0), + nil, + ) + + rightvrsTx, _ = NewTransaction( + 3, + testAddr, + big.NewInt(10), + 2000, + big.NewInt(1), + common.FromHex("5544"), + ).WithSignature( + HomesteadSigner{}, + common.Hex2Bytes("98ff921201554726367d2be8c804a7ff89ccf285ebc57dff8ae4c44b9c19ac4a8887321be575c8095f789dd4c743dfe42c1820f9231f98a962b210e3ac2452a301"), + ) + + emptyEip2718Tx = NewTx(&AccessListTx{ + ChainID: big.NewInt(1), + Nonce: 3, + To: &testAddr, + Value: big.NewInt(10), + Gas: 25000, + GasPrice: big.NewInt(1), + Data: common.FromHex("5544"), + }) + + signedEip2718Tx, _ = emptyEip2718Tx.WithSignature( + NewEIP2930Signer(big.NewInt(1)), + common.Hex2Bytes("c9519f4f2b30335884581971573fadf60c6204f59a911df35ee8a540456b266032f1e8e2c5dd761f9e4f88f41c8310aeaba26a8bfcdacfedfa12ec3862d3752101"), + ) +) + +func TestDecodeEmptyTypedTx(t *testing.T) { + input := []byte{0x80} + var tx Transaction + err := rlp.DecodeBytes(input, &tx) + if err != errEmptyTypedTx { + t.Fatal("wrong error:", err) + } +} + +func TestTransactionSigHash(t *testing.T) { + var homestead HomesteadSigner + if homestead.Hash(emptyTx) != common.HexToHash("c775b99e7ad12f50d819fcd602390467e28141316969f4b57f0626f74fe3b386") { + t.Errorf("empty transaction hash mismatch, got %x", emptyTx.Hash()) + } + if homestead.Hash(rightvrsTx) != common.HexToHash("fe7a79529ed5f7c3375d06b26b186a8644e0e16c373d7a12be41c62d6042b77a") { + t.Errorf("RightVRS transaction hash mismatch, got %x", rightvrsTx.Hash()) + } +} + +func TestTransactionEncode(t *testing.T) { + txb, err := rlp.EncodeToBytes(rightvrsTx) + if err != nil { + t.Fatalf("encode error: %v", err) + } + should := common.FromHex("f86103018207d094b94f5374fce5edbc8e2a8697c15331677e6ebf0b0a8255441ca098ff921201554726367d2be8c804a7ff89ccf285ebc57dff8ae4c44b9c19ac4aa08887321be575c8095f789dd4c743dfe42c1820f9231f98a962b210e3ac2452a3") + if !bytes.Equal(txb, should) { + t.Errorf("encoded RLP mismatch, got %x", txb) + } +} + +func TestEIP2718TransactionSigHash(t *testing.T) { + s := NewEIP2930Signer(big.NewInt(1)) + if s.Hash(emptyEip2718Tx) != common.HexToHash("49b486f0ec0a60dfbbca2d30cb07c9e8ffb2a2ff41f29a1ab6737475f6ff69f3") { + t.Errorf("empty EIP-2718 transaction hash mismatch, got %x", s.Hash(emptyEip2718Tx)) + } + if s.Hash(signedEip2718Tx) != common.HexToHash("49b486f0ec0a60dfbbca2d30cb07c9e8ffb2a2ff41f29a1ab6737475f6ff69f3") { + t.Errorf("signed EIP-2718 transaction hash mismatch, got %x", s.Hash(signedEip2718Tx)) + } +} + +// This test checks signature operations on access list transactions. +func TestEIP2930Signer(t *testing.T) { + + var ( + key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + keyAddr = crypto.PubkeyToAddress(key.PublicKey) + signer1 = NewEIP2930Signer(big.NewInt(1)) + signer2 = NewEIP2930Signer(big.NewInt(2)) + tx0 = NewTx(&AccessListTx{Nonce: 1}) + tx1 = NewTx(&AccessListTx{ChainID: big.NewInt(1), Nonce: 1}) + tx2, _ = SignNewTx(key, signer2, &AccessListTx{ChainID: big.NewInt(2), Nonce: 1}) + ) + + tests := []struct { + tx *Transaction + signer Signer + wantSignerHash common.Hash + wantSenderErr error + wantSignErr error + wantHash common.Hash // after signing + }{ + { + tx: tx0, + signer: signer1, + wantSignerHash: common.HexToHash("846ad7672f2a3a40c1f959cd4a8ad21786d620077084d84c8d7c077714caa139"), + wantSenderErr: ErrInvalidChainId, + wantHash: common.HexToHash("1ccd12d8bbdb96ea391af49a35ab641e219b2dd638dea375f2bc94dd290f2549"), + }, + { + tx: tx1, + signer: signer1, + wantSenderErr: ErrInvalidSig, + wantSignerHash: common.HexToHash("846ad7672f2a3a40c1f959cd4a8ad21786d620077084d84c8d7c077714caa139"), + wantHash: common.HexToHash("1ccd12d8bbdb96ea391af49a35ab641e219b2dd638dea375f2bc94dd290f2549"), + }, + { + // This checks what happens when trying to sign an unsigned tx for the wrong chain. + tx: tx1, + signer: signer2, + wantSenderErr: ErrInvalidChainId, + wantSignerHash: common.HexToHash("367967247499343401261d718ed5aa4c9486583e4d89251afce47f4a33c33362"), + wantSignErr: ErrInvalidChainId, + }, + { + // This checks what happens when trying to re-sign a signed tx for the wrong chain. + tx: tx2, + signer: signer1, + wantSenderErr: ErrInvalidChainId, + wantSignerHash: common.HexToHash("846ad7672f2a3a40c1f959cd4a8ad21786d620077084d84c8d7c077714caa139"), + wantSignErr: ErrInvalidChainId, + }, + } + + for i, test := range tests { + sigHash := test.signer.Hash(test.tx) + if sigHash != test.wantSignerHash { + t.Errorf("test %d: wrong sig hash: got %x, want %x", i, sigHash, test.wantSignerHash) + } + sender, err := Sender(test.signer, test.tx) + if err != test.wantSenderErr { + t.Errorf("test %d: wrong Sender error %q", i, err) + } + if err == nil && sender != keyAddr { + t.Errorf("test %d: wrong sender address %x", i, sender) + } + signedTx, err := SignTx(test.tx, test.signer, key) + if err != test.wantSignErr { + t.Fatalf("test %d: wrong SignTx error %q", i, err) + } + if signedTx != nil { + if signedTx.Hash() != test.wantHash { + t.Errorf("test %d: wrong tx hash after signing: got %x, want %x", i, signedTx.Hash(), test.wantHash) + } + } + } +} + +func TestEIP2718TransactionEncode(t *testing.T) { + // RLP representation + { + have, err := rlp.EncodeToBytes(signedEip2718Tx) + if err != nil { + t.Fatalf("encode error: %v", err) + } + want := common.FromHex("b86601f8630103018261a894b94f5374fce5edbc8e2a8697c15331677e6ebf0b0a825544c001a0c9519f4f2b30335884581971573fadf60c6204f59a911df35ee8a540456b2660a032f1e8e2c5dd761f9e4f88f41c8310aeaba26a8bfcdacfedfa12ec3862d37521") + if !bytes.Equal(have, want) { + t.Errorf("encoded RLP mismatch, got %x", have) + } + } + // Binary representation + { + have, err := signedEip2718Tx.MarshalBinary() + if err != nil { + t.Fatalf("encode error: %v", err) + } + want := common.FromHex("01f8630103018261a894b94f5374fce5edbc8e2a8697c15331677e6ebf0b0a825544c001a0c9519f4f2b30335884581971573fadf60c6204f59a911df35ee8a540456b2660a032f1e8e2c5dd761f9e4f88f41c8310aeaba26a8bfcdacfedfa12ec3862d37521") + if !bytes.Equal(have, want) { + t.Errorf("encoded RLP mismatch, got %x", have) + } + } +} + +func decodeTx(data []byte) (*Transaction, error) { + var tx Transaction + t, err := &tx, rlp.Decode(bytes.NewReader(data), &tx) + return t, err +} + +func defaultTestKey() (*ecdsa.PrivateKey, common.Address) { + key, _ := crypto.HexToECDSA("45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8") + addr := crypto.PubkeyToAddress(key.PublicKey) + return key, addr +} + +func TestRecipientEmpty(t *testing.T) { + _, addr := defaultTestKey() + tx, err := decodeTx(common.Hex2Bytes("f8498080808080011ca09b16de9d5bdee2cf56c28d16275a4da68cd30273e2525f3959f5d62557489921a0372ebd8fb3345f7db7b5a86d42e24d36e983e259b0664ceb8c227ec9af572f3d")) + if err != nil { + t.Fatal(err) + } + + from, err := Sender(HomesteadSigner{}, tx) + if err != nil { + t.Fatal(err) + } + if addr != from { + t.Fatal("derived address doesn't match") + } +} + +func TestRecipientNormal(t *testing.T) { + _, addr := defaultTestKey() + + tx, err := decodeTx(common.Hex2Bytes("f85d80808094000000000000000000000000000000000000000080011ca0527c0d8f5c63f7b9f41324a7c8a563ee1190bcbf0dac8ab446291bdbf32f5c79a0552c4ef0a09a04395074dab9ed34d3fbfb843c2f2546cc30fe89ec143ca94ca6")) + if err != nil { + t.Fatal(err) + } + + from, err := Sender(HomesteadSigner{}, tx) + if err != nil { + t.Fatal(err) + } + if addr != from { + t.Fatal("derived address doesn't match") + } +} + +func TestTransactionPriceNonceSortLegacy(t *testing.T) { + testTransactionPriceNonceSort(t, nil) +} + +func TestTransactionPriceNonceSort1559(t *testing.T) { + testTransactionPriceNonceSort(t, big.NewInt(0)) + testTransactionPriceNonceSort(t, big.NewInt(5)) + testTransactionPriceNonceSort(t, big.NewInt(50)) +} + +// Tests that transactions can be correctly sorted according to their price in +// decreasing order, but at the same time with increasing nonces when issued by +// the same account. +func testTransactionPriceNonceSort(t *testing.T, baseFee *big.Int) { + // Generate a batch of accounts to start with + keys := make([]*ecdsa.PrivateKey, 25) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + } + signer := LatestSignerForChainID(common.Big1) + + // Generate a batch of transactions with overlapping values, but shifted nonces + groups := map[common.Address]Transactions{} + expectedCount := 0 + for start, key := range keys { + addr := crypto.PubkeyToAddress(key.PublicKey) + count := 25 + for i := 0; i < 25; i++ { + var tx *Transaction + gasFeeCap := rand.Intn(50) + if baseFee == nil { + tx = NewTx(&LegacyTx{ + Nonce: uint64(start + i), + To: &common.Address{}, + Value: big.NewInt(100), + Gas: 100, + GasPrice: big.NewInt(int64(gasFeeCap)), + Data: nil, + }) + } else { + tx = NewTx(&DynamicFeeTx{ + Nonce: uint64(start + i), + To: &common.Address{}, + Value: big.NewInt(100), + Gas: 100, + GasFeeCap: big.NewInt(int64(gasFeeCap)), + GasTipCap: big.NewInt(int64(rand.Intn(gasFeeCap + 1))), + Data: nil, + }) + if count == 25 && int64(gasFeeCap) < baseFee.Int64() { + count = i + } + } + tx, err := SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to sign tx: %s", err) + } + groups[addr] = append(groups[addr], tx) + } + expectedCount += count + } + // Sort the transactions and cross check the nonce ordering + txset := NewTransactionsByPriceAndNonce(signer, groups, baseFee) + + txs := Transactions{} + for tx := txset.Peek(); tx != nil; tx = txset.Peek() { + txs = append(txs, tx) + txset.Shift() + } + if len(txs) != expectedCount { + t.Errorf("expected %d transactions, found %d", expectedCount, len(txs)) + } + for i, txi := range txs { + fromi, _ := Sender(signer, txi) + + // Make sure the nonce order is valid + for j, txj := range txs[i+1:] { + fromj, _ := Sender(signer, txj) + if fromi == fromj && txi.Nonce() > txj.Nonce() { + t.Errorf("invalid nonce ordering: tx #%d (A=%x N=%v) < tx #%d (A=%x N=%v)", i, fromi[:4], txi.Nonce(), i+j, fromj[:4], txj.Nonce()) + } + } + // If the next tx has different from account, the price must be lower than the current one + if i+1 < len(txs) { + next := txs[i+1] + fromNext, _ := Sender(signer, next) + tip, err := txi.EffectiveGasTip(baseFee) + nextTip, nextErr := next.EffectiveGasTip(baseFee) + if err != nil || nextErr != nil { + t.Errorf("error calculating effective tip") + } + if fromi != fromNext && tip.Cmp(nextTip) < 0 { + t.Errorf("invalid gasprice ordering: tx #%d (A=%x P=%v) < tx #%d (A=%x P=%v)", i, fromi[:4], txi.GasPrice(), i+1, fromNext[:4], next.GasPrice()) + } + } + } +} + +// Tests that if multiple transactions have the same price, the ones seen earlier +// are prioritized to avoid network spam attacks aiming for a specific ordering. +func TestTransactionTimeSort(t *testing.T) { + // Generate a batch of accounts to start with + keys := make([]*ecdsa.PrivateKey, 5) + for i := 0; i < len(keys); i++ { + keys[i], _ = crypto.GenerateKey() + } + signer := HomesteadSigner{} + + // Generate a batch of transactions with overlapping prices, but different creation times + groups := map[common.Address]Transactions{} + for start, key := range keys { + addr := crypto.PubkeyToAddress(key.PublicKey) + + tx, _ := SignTx(NewTransaction(0, common.Address{}, big.NewInt(100), 100, big.NewInt(1), nil), signer, key) + tx.time = time.Unix(0, int64(len(keys)-start)) + + groups[addr] = append(groups[addr], tx) + } + // Sort the transactions and cross check the nonce ordering + txset := NewTransactionsByPriceAndNonce(signer, groups, nil) + + txs := Transactions{} + for tx := txset.Peek(); tx != nil; tx = txset.Peek() { + txs = append(txs, tx) + txset.Shift() + } + if len(txs) != len(keys) { + t.Errorf("expected %d transactions, found %d", len(keys), len(txs)) + } + for i, txi := range txs { + fromi, _ := Sender(signer, txi) + if i+1 < len(txs) { + next := txs[i+1] + fromNext, _ := Sender(signer, next) + + if txi.GasPrice().Cmp(next.GasPrice()) < 0 { + t.Errorf("invalid gasprice ordering: tx #%d (A=%x P=%v) < tx #%d (A=%x P=%v)", i, fromi[:4], txi.GasPrice(), i+1, fromNext[:4], next.GasPrice()) + } + // Make sure time order is ascending if the txs have the same gas price + if txi.GasPrice().Cmp(next.GasPrice()) == 0 && txi.time.After(next.time) { + t.Errorf("invalid received time ordering: tx #%d (A=%x T=%v) > tx #%d (A=%x T=%v)", i, fromi[:4], txi.time, i+1, fromNext[:4], next.time) + } + } + } +} + +// TestTransactionCoding tests serializing/de-serializing to/from rlp and JSON. +func TestTransactionCoding(t *testing.T) { + key, err := crypto.GenerateKey() + if err != nil { + t.Fatalf("could not generate key: %v", err) + } + var ( + signer = NewEIP2930Signer(common.Big1) + addr = common.HexToAddress("0x0000000000000000000000000000000000000001") + recipient = common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87") + accesses = AccessList{{Address: addr, StorageKeys: []common.Hash{{0}}}} + ) + for i := uint64(0); i < 500; i++ { + var txdata TxData + switch i % 5 { + case 0: + // Legacy tx. + txdata = &LegacyTx{ + Nonce: i, + To: &recipient, + Gas: 1, + GasPrice: big.NewInt(2), + Data: []byte("abcdef"), + } + case 1: + // Legacy tx contract creation. + txdata = &LegacyTx{ + Nonce: i, + Gas: 1, + GasPrice: big.NewInt(2), + Data: []byte("abcdef"), + } + case 2: + // Tx with non-zero access list. + txdata = &AccessListTx{ + ChainID: big.NewInt(1), + Nonce: i, + To: &recipient, + Gas: 123457, + GasPrice: big.NewInt(10), + AccessList: accesses, + Data: []byte("abcdef"), + } + case 3: + // Tx with empty access list. + txdata = &AccessListTx{ + ChainID: big.NewInt(1), + Nonce: i, + To: &recipient, + Gas: 123457, + GasPrice: big.NewInt(10), + Data: []byte("abcdef"), + } + case 4: + // Contract creation with access list. + txdata = &AccessListTx{ + ChainID: big.NewInt(1), + Nonce: i, + Gas: 123457, + GasPrice: big.NewInt(10), + AccessList: accesses, + } + } + tx, err := SignNewTx(key, signer, txdata) + if err != nil { + t.Fatalf("could not sign transaction: %v", err) + } + // RLP + parsedTx, err := encodeDecodeBinary(tx) + if err != nil { + t.Fatal(err) + } + assertEqual(parsedTx, tx) + + // JSON + parsedTx, err = encodeDecodeJSON(tx) + if err != nil { + t.Fatal(err) + } + assertEqual(parsedTx, tx) + } +} + +func encodeDecodeJSON(tx *Transaction) (*Transaction, error) { + data, err := json.Marshal(tx) + if err != nil { + return nil, fmt.Errorf("json encoding failed: %v", err) + } + var parsedTx = &Transaction{} + if err := json.Unmarshal(data, &parsedTx); err != nil { + return nil, fmt.Errorf("json decoding failed: %v", err) + } + return parsedTx, nil +} + +func encodeDecodeBinary(tx *Transaction) (*Transaction, error) { + data, err := tx.MarshalBinary() + if err != nil { + return nil, fmt.Errorf("rlp encoding failed: %v", err) + } + var parsedTx = &Transaction{} + if err := parsedTx.UnmarshalBinary(data); err != nil { + return nil, fmt.Errorf("rlp decoding failed: %v", err) + } + return parsedTx, nil +} + +func assertEqual(orig *Transaction, cpy *Transaction) error { + // compare nonce, price, gaslimit, recipient, amount, payload, V, R, S + if want, got := orig.Hash(), cpy.Hash(); want != got { + return fmt.Errorf("parsed tx differs from original tx, want %v, got %v", want, got) + } + if want, got := orig.ChainId(), cpy.ChainId(); want.Cmp(got) != 0 { + return fmt.Errorf("invalid chain id, want %d, got %d", want, got) + } + if orig.AccessList() != nil { + if !reflect.DeepEqual(orig.AccessList(), cpy.AccessList()) { + return fmt.Errorf("access list wrong!") + } + } + return nil +} diff --git a/core/types/types_test.go b/core/types/types_test.go new file mode 100644 index 0000000000..7b68db9b4b --- /dev/null +++ b/core/types/types_test.go @@ -0,0 +1,158 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package types + +import ( + "math/big" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" +) + +type devnull struct{ len int } + +func (d *devnull) Write(p []byte) (int, error) { + d.len += len(p) + return len(p), nil +} + +func BenchmarkEncodeRLP(b *testing.B) { + benchRLP(b, true) +} + +func BenchmarkDecodeRLP(b *testing.B) { + benchRLP(b, false) +} + +func benchRLP(b *testing.B, encode bool) { + key, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + to := common.HexToAddress("0x00000000000000000000000000000000deadbeef") + signer := NewLondonSigner(big.NewInt(1337)) + for _, tc := range []struct { + name string + obj interface{} + }{ + { + "legacy-header", + &Header{ + Difficulty: big.NewInt(10000000000), + Number: big.NewInt(1000), + GasLimit: 8_000_000, + GasUsed: 8_000_000, + Time: 555, + Extra: make([]byte, 32), + }, + }, + { + "london-header", + &Header{ + Difficulty: big.NewInt(10000000000), + Number: big.NewInt(1000), + GasLimit: 8_000_000, + GasUsed: 8_000_000, + Time: 555, + Extra: make([]byte, 32), + BaseFee: big.NewInt(10000000000), + }, + }, + { + "receipt-for-storage", + &ReceiptForStorage{ + Status: ReceiptStatusSuccessful, + CumulativeGasUsed: 0x888888888, + Logs: make([]*Log, 0), + }, + }, + { + "receipt-full", + &Receipt{ + Status: ReceiptStatusSuccessful, + CumulativeGasUsed: 0x888888888, + Logs: make([]*Log, 0), + }, + }, + { + "legacy-transaction", + MustSignNewTx(key, signer, + &LegacyTx{ + Nonce: 1, + GasPrice: big.NewInt(500), + Gas: 1000000, + To: &to, + Value: big.NewInt(1), + }), + }, + { + "access-transaction", + MustSignNewTx(key, signer, + &AccessListTx{ + Nonce: 1, + GasPrice: big.NewInt(500), + Gas: 1000000, + To: &to, + Value: big.NewInt(1), + }), + }, + { + "1559-transaction", + MustSignNewTx(key, signer, + &DynamicFeeTx{ + Nonce: 1, + Gas: 1000000, + To: &to, + Value: big.NewInt(1), + GasTipCap: big.NewInt(500), + GasFeeCap: big.NewInt(500), + }), + }, + } { + if encode { + b.Run(tc.name, func(b *testing.B) { + b.ReportAllocs() + var null = &devnull{} + for i := 0; i < b.N; i++ { + rlp.Encode(null, tc.obj) + } + b.SetBytes(int64(null.len / b.N)) + }) + } else { + data, _ := rlp.EncodeToBytes(tc.obj) + // Test decoding + b.Run(tc.name, func(b *testing.B) { + b.ReportAllocs() + for i := 0; i < b.N; i++ { + if err := rlp.DecodeBytes(data, tc.obj); err != nil { + b.Fatal(err) + } + } + b.SetBytes(int64(len(data))) + }) + } + } +} diff --git a/core/vm/access_list_tracer.go b/core/vm/access_list_tracer.go new file mode 100644 index 0000000000..92ca900f01 --- /dev/null +++ b/core/vm/access_list_tracer.go @@ -0,0 +1,192 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// accessList is an accumulator for the set of accounts and storage slots an EVM +// contract execution touches. +type accessList map[common.Address]accessListSlots + +// accessListSlots is an accumulator for the set of storage slots within a single +// contract that an EVM contract execution touches. +type accessListSlots map[common.Hash]struct{} + +// newAccessList creates a new accessList. +func newAccessList() accessList { + return make(map[common.Address]accessListSlots) +} + +// addAddress adds an address to the accesslist. +func (al accessList) addAddress(address common.Address) { + // Set address if not previously present + if _, present := al[address]; !present { + al[address] = make(map[common.Hash]struct{}) + } +} + +// addSlot adds a storage slot to the accesslist. +func (al accessList) addSlot(address common.Address, slot common.Hash) { + // Set address if not previously present + al.addAddress(address) + + // Set the slot on the surely existent storage set + al[address][slot] = struct{}{} +} + +// equal checks if the content of the current access list is the same as the +// content of the other one. +func (al accessList) equal(other accessList) bool { + // Cross reference the accounts first + if len(al) != len(other) { + return false + } + for addr := range al { + if _, ok := other[addr]; !ok { + return false + } + } + for addr := range other { + if _, ok := al[addr]; !ok { + return false + } + } + // Accounts match, cross reference the storage slots too + for addr, slots := range al { + otherslots := other[addr] + + if len(slots) != len(otherslots) { + return false + } + for hash := range slots { + if _, ok := otherslots[hash]; !ok { + return false + } + } + for hash := range otherslots { + if _, ok := slots[hash]; !ok { + return false + } + } + } + return true +} + +// accesslist converts the accesslist to a types.AccessList. +func (al accessList) accessList() types.AccessList { + acl := make(types.AccessList, 0, len(al)) + for addr, slots := range al { + tuple := types.AccessTuple{Address: addr, StorageKeys: []common.Hash{}} + for slot := range slots { + tuple.StorageKeys = append(tuple.StorageKeys, slot) + } + acl = append(acl, tuple) + } + return acl +} + +// AccessListTracer is a tracer that accumulates touched accounts and storage +// slots into an internal set. +type AccessListTracer struct { + excl map[common.Address]struct{} // Set of account to exclude from the list + list accessList // Set of accounts and storage slots touched +} + +// NewAccessListTracer creates a new tracer that can generate AccessLists. +// An optional AccessList can be specified to occupy slots and addresses in +// the resulting accesslist. +func NewAccessListTracer(acl types.AccessList, from, to common.Address, precompiles []common.Address) *AccessListTracer { + excl := map[common.Address]struct{}{ + from: {}, to: {}, + } + for _, addr := range precompiles { + excl[addr] = struct{}{} + } + list := newAccessList() + for _, al := range acl { + if _, ok := excl[al.Address]; !ok { + list.addAddress(al.Address) + } + for _, slot := range al.StorageKeys { + list.addSlot(al.Address, slot) + } + } + return &AccessListTracer{ + excl: excl, + list: list, + } +} + +func (a *AccessListTracer) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { +} + +// CaptureState captures all opcodes that touch storage or addresses and adds them to the accesslist. +func (a *AccessListTracer) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { + stack := scope.Stack + if (op == SLOAD || op == SSTORE) && stack.len() >= 1 { + slot := common.Hash(stack.data[stack.len()-1].Bytes32()) + a.list.addSlot(scope.Contract.Address(), slot) + } + if (op == EXTCODECOPY || op == EXTCODEHASH || op == EXTCODESIZE || op == BALANCE || op == SELFDESTRUCT) && stack.len() >= 1 { + addr := common.Address(stack.data[stack.len()-1].Bytes20()) + if _, ok := a.excl[addr]; !ok { + a.list.addAddress(addr) + } + } + if (op == DELEGATECALL || op == CALL || op == STATICCALL || op == CALLCODE) && stack.len() >= 5 { + addr := common.Address(stack.data[stack.len()-2].Bytes20()) + if _, ok := a.excl[addr]; !ok { + a.list.addAddress(addr) + } + } +} + +func (*AccessListTracer) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { +} + +func (*AccessListTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {} + +func (*AccessListTracer) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (*AccessListTracer) CaptureExit(output []byte, gasUsed uint64, err error) {} + +// AccessList returns the current accesslist maintained by the tracer. +func (a *AccessListTracer) AccessList() types.AccessList { + return a.list.accessList() +} + +// Equal returns if the content of two access list traces are equal. +func (a *AccessListTracer) Equal(other *AccessListTracer) bool { + return a.list.equal(other.list) +} diff --git a/core/vm/analysis.go b/core/vm/analysis.go new file mode 100644 index 0000000000..752e27dd23 --- /dev/null +++ b/core/vm/analysis.go @@ -0,0 +1,134 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +const ( + set2BitsMask = uint16(0b1100_0000_0000_0000) + set3BitsMask = uint16(0b1110_0000_0000_0000) + set4BitsMask = uint16(0b1111_0000_0000_0000) + set5BitsMask = uint16(0b1111_1000_0000_0000) + set6BitsMask = uint16(0b1111_1100_0000_0000) + set7BitsMask = uint16(0b1111_1110_0000_0000) +) + +// bitvec is a bit vector which maps bytes in a program. +// An unset bit means the byte is an opcode, a set bit means +// it's data (i.e. argument of PUSHxx). +type bitvec []byte + +var lookup = [8]byte{ + 0x80, 0x40, 0x20, 0x10, 0x8, 0x4, 0x2, 0x1, +} + +func (bits bitvec) set1(pos uint64) { + bits[pos/8] |= lookup[pos%8] +} + +func (bits bitvec) setN(flag uint16, pos uint64) { + a := flag >> (pos % 8) + bits[pos/8] |= byte(a >> 8) + if b := byte(a); b != 0 { + // If the bit-setting affects the neighbouring byte, we can assign - no need to OR it, + // since it's the first write to that byte + bits[pos/8+1] = b + } +} + +func (bits bitvec) set8(pos uint64) { + a := byte(0xFF >> (pos % 8)) + bits[pos/8] |= a + bits[pos/8+1] = ^a +} + +func (bits bitvec) set16(pos uint64) { + a := byte(0xFF >> (pos % 8)) + bits[pos/8] |= a + bits[pos/8+1] = 0xFF + bits[pos/8+2] = ^a +} + +// codeSegment checks if the position is in a code segment. +func (bits *bitvec) codeSegment(pos uint64) bool { + return ((*bits)[pos/8] & (0x80 >> (pos % 8))) == 0 +} + +// codeBitmap collects data locations in code. +func codeBitmap(code []byte) bitvec { + // The bitmap is 4 bytes longer than necessary, in case the code + // ends with a PUSH32, the algorithm will push zeroes onto the + // bitvector outside the bounds of the actual code. + bits := make(bitvec, len(code)/8+1+4) + return codeBitmapInternal(code, bits) +} + +// codeBitmapInternal is the internal implementation of codeBitmap. +// It exists for the purpose of being able to run benchmark tests +// without dynamic allocations affecting the results. +func codeBitmapInternal(code, bits bitvec) bitvec { + for pc := uint64(0); pc < uint64(len(code)); { + op := OpCode(code[pc]) + pc++ + if op < PUSH1 || op > PUSH32 { + continue + } + numbits := op - PUSH1 + 1 + if numbits >= 8 { + for ; numbits >= 16; numbits -= 16 { + bits.set16(pc) + pc += 16 + } + for ; numbits >= 8; numbits -= 8 { + bits.set8(pc) + pc += 8 + } + } + switch numbits { + case 1: + bits.set1(pc) + pc += 1 + case 2: + bits.setN(set2BitsMask, pc) + pc += 2 + case 3: + bits.setN(set3BitsMask, pc) + pc += 3 + case 4: + bits.setN(set4BitsMask, pc) + pc += 4 + case 5: + bits.setN(set5BitsMask, pc) + pc += 5 + case 6: + bits.setN(set6BitsMask, pc) + pc += 6 + case 7: + bits.setN(set7BitsMask, pc) + pc += 7 + } + } + return bits +} diff --git a/core/vm/analysis_test.go b/core/vm/analysis_test.go new file mode 100644 index 0000000000..96fa03778b --- /dev/null +++ b/core/vm/analysis_test.go @@ -0,0 +1,115 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "testing" + + "github.com/ethereum/go-ethereum/crypto" +) + +func TestJumpDestAnalysis(t *testing.T) { + tests := []struct { + code []byte + exp byte + which int + }{ + {[]byte{byte(PUSH1), 0x01, 0x01, 0x01}, 0x40, 0}, + {[]byte{byte(PUSH1), byte(PUSH1), byte(PUSH1), byte(PUSH1)}, 0x50, 0}, + {[]byte{byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), 0x01, 0x01, 0x01}, 0x7F, 0}, + {[]byte{byte(PUSH8), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0x80, 1}, + {[]byte{0x01, 0x01, 0x01, 0x01, 0x01, byte(PUSH2), byte(PUSH2), byte(PUSH2), 0x01, 0x01, 0x01}, 0x03, 0}, + {[]byte{0x01, 0x01, 0x01, 0x01, 0x01, byte(PUSH2), 0x01, 0x01, 0x01, 0x01, 0x01}, 0x00, 1}, + {[]byte{byte(PUSH3), 0x01, 0x01, 0x01, byte(PUSH1), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0x74, 0}, + {[]byte{byte(PUSH3), 0x01, 0x01, 0x01, byte(PUSH1), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0x00, 1}, + {[]byte{0x01, byte(PUSH8), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0x3F, 0}, + {[]byte{0x01, byte(PUSH8), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0xC0, 1}, + {[]byte{byte(PUSH16), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0x7F, 0}, + {[]byte{byte(PUSH16), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0xFF, 1}, + {[]byte{byte(PUSH16), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0x80, 2}, + {[]byte{byte(PUSH8), 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, byte(PUSH1), 0x01}, 0x7f, 0}, + {[]byte{byte(PUSH8), 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, byte(PUSH1), 0x01}, 0xA0, 1}, + {[]byte{byte(PUSH32)}, 0x7F, 0}, + {[]byte{byte(PUSH32)}, 0xFF, 1}, + {[]byte{byte(PUSH32)}, 0xFF, 2}, + } + for i, test := range tests { + ret := codeBitmap(test.code) + if ret[test.which] != test.exp { + t.Fatalf("test %d: expected %x, got %02x", i, test.exp, ret[test.which]) + } + } +} + +const analysisCodeSize = 1200 * 1024 + +func BenchmarkJumpdestAnalysis_1200k(bench *testing.B) { + // 1.4 ms + code := make([]byte, analysisCodeSize) + bench.SetBytes(analysisCodeSize) + bench.ResetTimer() + for i := 0; i < bench.N; i++ { + codeBitmap(code) + } + bench.StopTimer() +} +func BenchmarkJumpdestHashing_1200k(bench *testing.B) { + // 4 ms + code := make([]byte, analysisCodeSize) + bench.SetBytes(analysisCodeSize) + bench.ResetTimer() + for i := 0; i < bench.N; i++ { + crypto.Keccak256Hash(code) + } + bench.StopTimer() +} + +func BenchmarkJumpdestOpAnalysis(bench *testing.B) { + var op OpCode + bencher := func(b *testing.B) { + code := make([]byte, analysisCodeSize) + b.SetBytes(analysisCodeSize) + for i := range code { + code[i] = byte(op) + } + bits := make(bitvec, len(code)/8+1+4) + b.ResetTimer() + for i := 0; i < b.N; i++ { + for j := range bits { + bits[j] = 0 + } + codeBitmapInternal(code, bits) + } + } + for op = PUSH1; op <= PUSH32; op++ { + bench.Run(op.String(), bencher) + } + op = JUMPDEST + bench.Run(op.String(), bencher) + op = STOP + bench.Run(op.String(), bencher) +} diff --git a/core/vm/common.go b/core/vm/common.go new file mode 100644 index 0000000000..0e3ed04376 --- /dev/null +++ b/core/vm/common.go @@ -0,0 +1,92 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/holiman/uint256" +) + +// calcMemSize64 calculates the required memory size, and returns +// the size and whether the result overflowed uint64 +func calcMemSize64(off, l *uint256.Int) (uint64, bool) { + if !l.IsUint64() { + return 0, true + } + return calcMemSize64WithUint(off, l.Uint64()) +} + +// calcMemSize64WithUint calculates the required memory size, and returns +// the size and whether the result overflowed uint64 +// Identical to calcMemSize64, but length is a uint64 +func calcMemSize64WithUint(off *uint256.Int, length64 uint64) (uint64, bool) { + // if length is zero, memsize is always zero, regardless of offset + if length64 == 0 { + return 0, false + } + // Check that offset doesn't overflow + offset64, overflow := off.Uint64WithOverflow() + if overflow { + return 0, true + } + val := offset64 + length64 + // if value < either of it's parts, then it overflowed + return val, val < offset64 +} + +// getData returns a slice from the data based on the start and size and pads +// up to size with zero's. This function is overflow safe. +func getData(data []byte, start uint64, size uint64) []byte { + length := uint64(len(data)) + if start > length { + start = length + } + end := start + size + if end > length { + end = length + } + return common.RightPadBytes(data[start:end], int(size)) +} + +// toWordSize returns the ceiled word size required for memory expansion. +func toWordSize(size uint64) uint64 { + if size > math.MaxUint64-31 { + return math.MaxUint64/32 + 1 + } + + return (size + 31) / 32 +} + +func allZero(b []byte) bool { + for _, byte := range b { + if byte != 0 { + return false + } + } + return true +} diff --git a/core/vm/contract.go b/core/vm/contract.go new file mode 100644 index 0000000000..c7e4b53a99 --- /dev/null +++ b/core/vm/contract.go @@ -0,0 +1,209 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/holiman/uint256" +) + +// ContractRef is a reference to the contract's backing object +type ContractRef interface { + Address() common.Address +} + +// AccountRef implements ContractRef. +// +// Account references are used during EVM initialisation and +// it's primary use is to fetch addresses. Removing this object +// proves difficult because of the cached jump destinations which +// are fetched from the parent contract (i.e. the caller), which +// is a ContractRef. +type AccountRef common.Address + +// Address casts AccountRef to a Address +func (ar AccountRef) Address() common.Address { return (common.Address)(ar) } + +// Contract represents an ethereum contract in the state database. It contains +// the contract code, calling arguments. Contract implements ContractRef +type Contract struct { + // CallerAddress is the result of the caller which initialised this + // contract. However when the "call method" is delegated this value + // needs to be initialised to that of the caller's caller. + CallerAddress common.Address + caller ContractRef + self ContractRef + + jumpdests map[common.Hash]bitvec // Aggregated result of JUMPDEST analysis. + analysis bitvec // Locally cached result of JUMPDEST analysis + + Code []byte + CodeHash common.Hash + CodeAddr *common.Address + Input []byte + + Gas uint64 + value *big.Int +} + +// NewContract returns a new contract environment for the execution of EVM. +func NewContract(caller ContractRef, object ContractRef, value *big.Int, gas uint64) *Contract { + c := &Contract{CallerAddress: caller.Address(), caller: caller, self: object} + + if parent, ok := caller.(*Contract); ok { + // Reuse JUMPDEST analysis from parent context if available. + c.jumpdests = parent.jumpdests + } else { + c.jumpdests = make(map[common.Hash]bitvec) + } + + // Gas should be a pointer so it can safely be reduced through the run + // This pointer will be off the state transition + c.Gas = gas + // ensures a value is set + c.value = value + + return c +} + +func (c *Contract) validJumpdest(dest *uint256.Int) bool { + udest, overflow := dest.Uint64WithOverflow() + // PC cannot go beyond len(code) and certainly can't be bigger than 63bits. + // Don't bother checking for JUMPDEST in that case. + if overflow || udest >= uint64(len(c.Code)) { + return false + } + // Only JUMPDESTs allowed for destinations + if OpCode(c.Code[udest]) != JUMPDEST { + return false + } + return c.isCode(udest) +} + +// isCode returns true if the provided PC location is an actual opcode, as +// opposed to a data-segment following a PUSHN operation. +func (c *Contract) isCode(udest uint64) bool { + // Do we already have an analysis laying around? + if c.analysis != nil { + return c.analysis.codeSegment(udest) + } + // Do we have a contract hash already? + // If we do have a hash, that means it's a 'regular' contract. For regular + // contracts ( not temporary initcode), we store the analysis in a map + if c.CodeHash != (common.Hash{}) { + // Does parent context have the analysis? + analysis, exist := c.jumpdests[c.CodeHash] + if !exist { + // Do the analysis and save in parent context + // We do not need to store it in c.analysis + analysis = codeBitmap(c.Code) + c.jumpdests[c.CodeHash] = analysis + } + // Also stash it in current contract for faster access + c.analysis = analysis + return analysis.codeSegment(udest) + } + // We don't have the code hash, most likely a piece of initcode not already + // in state trie. In that case, we do an analysis, and save it locally, so + // we don't have to recalculate it for every JUMP instruction in the execution + // However, we don't save it within the parent context + if c.analysis == nil { + c.analysis = codeBitmap(c.Code) + } + return c.analysis.codeSegment(udest) +} + +// AsDelegate sets the contract to be a delegate call and returns the current +// contract (for chaining calls) +func (c *Contract) AsDelegate() *Contract { + // NOTE: caller must, at all times be a contract. It should never happen + // that caller is something other than a Contract. + parent := c.caller.(*Contract) + c.CallerAddress = parent.CallerAddress + c.value = parent.value + + return c +} + +// GetOp returns the n'th element in the contract's byte array +func (c *Contract) GetOp(n uint64) OpCode { + return OpCode(c.GetByte(n)) +} + +// GetByte returns the n'th byte in the contract's byte array +func (c *Contract) GetByte(n uint64) byte { + if n < uint64(len(c.Code)) { + return c.Code[n] + } + + return 0 +} + +// Caller returns the caller of the contract. +// +// Caller will recursively call caller when the contract is a delegate +// call, including that of caller's caller. +func (c *Contract) Caller() common.Address { + return c.CallerAddress +} + +// UseGas attempts the use gas and subtracts it and returns true on success +func (c *Contract) UseGas(gas uint64) (ok bool) { + if c.Gas < gas { + return false + } + c.Gas -= gas + return true +} + +// Address returns the contracts address +func (c *Contract) Address() common.Address { + return c.self.Address() +} + +// Value returns the contract's value (sent to it from it's caller) +func (c *Contract) Value() *big.Int { + return c.value +} + +// SetCallCode sets the code of the contract and address of the backing data +// object +func (c *Contract) SetCallCode(addr *common.Address, hash common.Hash, code []byte) { + c.Code = code + c.CodeHash = hash + c.CodeAddr = addr +} + +// SetCodeOptionalHash can be used to provide code, but it's optional to provide hash. +// In case hash is not provided, the jumpdest analysis will not be saved to the parent context +func (c *Contract) SetCodeOptionalHash(addr *common.Address, codeAndHash *codeAndHash) { + c.Code = codeAndHash.code + c.CodeHash = codeAndHash.hash + c.CodeAddr = addr +} diff --git a/core/vm/contracts.go b/core/vm/contracts.go new file mode 100644 index 0000000000..d1cddf9b05 --- /dev/null +++ b/core/vm/contracts.go @@ -0,0 +1,1058 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "crypto/sha256" + "encoding/binary" + "errors" + "math/big" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/crypto/blake2b" + "github.com/ethereum/go-ethereum/crypto/bls12381" + "github.com/ethereum/go-ethereum/crypto/bn256" + + //lint:ignore SA1019 Needed for precompile + "golang.org/x/crypto/ripemd160" +) + +// PrecompiledContract is the basic interface for native Go contracts. The implementation +// requires a deterministic gas count based on the input size of the Run method of the +// contract. +type PrecompiledContract interface { + RequiredGas(input []byte) uint64 // RequiredPrice calculates the contract gas use + Run(input []byte) ([]byte, error) // Run runs the precompiled contract +} + +// PrecompiledContractsHomestead contains the default set of pre-compiled Ethereum +// contracts used in the Frontier and Homestead releases. +var PrecompiledContractsHomestead = map[common.Address]PrecompiledContract{ + common.BytesToAddress([]byte{1}): &ecrecover{}, + common.BytesToAddress([]byte{2}): &sha256hash{}, + common.BytesToAddress([]byte{3}): &ripemd160hash{}, + common.BytesToAddress([]byte{4}): &dataCopy{}, +} + +// PrecompiledContractsByzantium contains the default set of pre-compiled Ethereum +// contracts used in the Byzantium release. +var PrecompiledContractsByzantium = map[common.Address]PrecompiledContract{ + common.BytesToAddress([]byte{1}): &ecrecover{}, + common.BytesToAddress([]byte{2}): &sha256hash{}, + common.BytesToAddress([]byte{3}): &ripemd160hash{}, + common.BytesToAddress([]byte{4}): &dataCopy{}, + common.BytesToAddress([]byte{5}): &bigModExp{eip2565: false}, + common.BytesToAddress([]byte{6}): &bn256AddByzantium{}, + common.BytesToAddress([]byte{7}): &bn256ScalarMulByzantium{}, + common.BytesToAddress([]byte{8}): &bn256PairingByzantium{}, +} + +// PrecompiledContractsIstanbul contains the default set of pre-compiled Ethereum +// contracts used in the Istanbul release. +var PrecompiledContractsIstanbul = map[common.Address]PrecompiledContract{ + common.BytesToAddress([]byte{1}): &ecrecover{}, + common.BytesToAddress([]byte{2}): &sha256hash{}, + common.BytesToAddress([]byte{3}): &ripemd160hash{}, + common.BytesToAddress([]byte{4}): &dataCopy{}, + common.BytesToAddress([]byte{5}): &bigModExp{eip2565: false}, + common.BytesToAddress([]byte{6}): &bn256AddIstanbul{}, + common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{}, + common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{}, + common.BytesToAddress([]byte{9}): &blake2F{}, +} + +// PrecompiledContractsBerlin contains the default set of pre-compiled Ethereum +// contracts used in the Berlin release. +var PrecompiledContractsBerlin = map[common.Address]PrecompiledContract{ + common.BytesToAddress([]byte{1}): &ecrecover{}, + common.BytesToAddress([]byte{2}): &sha256hash{}, + common.BytesToAddress([]byte{3}): &ripemd160hash{}, + common.BytesToAddress([]byte{4}): &dataCopy{}, + common.BytesToAddress([]byte{5}): &bigModExp{eip2565: true}, + common.BytesToAddress([]byte{6}): &bn256AddIstanbul{}, + common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{}, + common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{}, + common.BytesToAddress([]byte{9}): &blake2F{}, +} + +// PrecompiledContractsBLS contains the set of pre-compiled Ethereum +// contracts specified in EIP-2537. These are exported for testing purposes. +var PrecompiledContractsBLS = map[common.Address]PrecompiledContract{ + common.BytesToAddress([]byte{10}): &bls12381G1Add{}, + common.BytesToAddress([]byte{11}): &bls12381G1Mul{}, + common.BytesToAddress([]byte{12}): &bls12381G1MultiExp{}, + common.BytesToAddress([]byte{13}): &bls12381G2Add{}, + common.BytesToAddress([]byte{14}): &bls12381G2Mul{}, + common.BytesToAddress([]byte{15}): &bls12381G2MultiExp{}, + common.BytesToAddress([]byte{16}): &bls12381Pairing{}, + common.BytesToAddress([]byte{17}): &bls12381MapG1{}, + common.BytesToAddress([]byte{18}): &bls12381MapG2{}, +} + +var ( + PrecompiledAddressesBerlin []common.Address + PrecompiledAddressesIstanbul []common.Address + PrecompiledAddressesByzantium []common.Address + PrecompiledAddressesHomestead []common.Address +) + +func init() { + for k := range PrecompiledContractsHomestead { + PrecompiledAddressesHomestead = append(PrecompiledAddressesHomestead, k) + } + for k := range PrecompiledContractsByzantium { + PrecompiledAddressesByzantium = append(PrecompiledAddressesByzantium, k) + } + for k := range PrecompiledContractsIstanbul { + PrecompiledAddressesIstanbul = append(PrecompiledAddressesIstanbul, k) + } + for k := range PrecompiledContractsBerlin { + PrecompiledAddressesBerlin = append(PrecompiledAddressesBerlin, k) + } +} + +// ActivePrecompiles returns the precompiles enabled with the current configuration. +func ActivePrecompiles(rules params.Rules) []common.Address { + switch { + case rules.IsSubnetEVM: + return PrecompiledAddressesBerlin + case rules.IsIstanbul: + return PrecompiledAddressesIstanbul + case rules.IsByzantium: + return PrecompiledAddressesByzantium + default: + return PrecompiledAddressesHomestead + } +} + +// RunPrecompiledContract runs and evaluates the output of a precompiled contract. +// It returns +// - the returned bytes, +// - the _remaining_ gas, +// - any error that occurred +func RunPrecompiledContract(p PrecompiledContract, input []byte, suppliedGas uint64) (ret []byte, remainingGas uint64, err error) { + gasCost := p.RequiredGas(input) + if suppliedGas < gasCost { + return nil, 0, ErrOutOfGas + } + suppliedGas -= gasCost + output, err := p.Run(input) + return output, suppliedGas, err +} + +// ECRECOVER implemented as a native contract. +type ecrecover struct{} + +func (c *ecrecover) RequiredGas(input []byte) uint64 { + return params.EcrecoverGas +} + +func (c *ecrecover) Run(input []byte) ([]byte, error) { + const ecRecoverInputLength = 128 + + input = common.RightPadBytes(input, ecRecoverInputLength) + // "input" is (hash, v, r, s), each 32 bytes + // but for ecrecover we want (r, s, v) + + r := new(big.Int).SetBytes(input[64:96]) + s := new(big.Int).SetBytes(input[96:128]) + v := input[63] - 27 + + // tighter sig s values input homestead only apply to tx sigs + if !allZero(input[32:63]) || !crypto.ValidateSignatureValues(v, r, s, false) { + return nil, nil + } + // We must make sure not to modify the 'input', so placing the 'v' along with + // the signature needs to be done on a new allocation + sig := make([]byte, 65) + copy(sig, input[64:128]) + sig[64] = v + // v needs to be at the end for libsecp256k1 + pubKey, err := crypto.Ecrecover(input[:32], sig) + // make sure the public key is a valid one + if err != nil { + return nil, nil + } + + // the first byte of pubkey is bitcoin heritage + return common.LeftPadBytes(crypto.Keccak256(pubKey[1:])[12:], 32), nil +} + +// SHA256 implemented as a native contract. +type sha256hash struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +// +// This method does not require any overflow checking as the input size gas costs +// required for anything significant is so high it's impossible to pay for. +func (c *sha256hash) RequiredGas(input []byte) uint64 { + return uint64(len(input)+31)/32*params.Sha256PerWordGas + params.Sha256BaseGas +} + +func (c *sha256hash) Run(input []byte) ([]byte, error) { + h := sha256.Sum256(input) + return h[:], nil +} + +// RIPEMD160 implemented as a native contract. +type ripemd160hash struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +// +// This method does not require any overflow checking as the input size gas costs +// required for anything significant is so high it's impossible to pay for. +func (c *ripemd160hash) RequiredGas(input []byte) uint64 { + return uint64(len(input)+31)/32*params.Ripemd160PerWordGas + params.Ripemd160BaseGas +} + +func (c *ripemd160hash) Run(input []byte) ([]byte, error) { + ripemd := ripemd160.New() + ripemd.Write(input) + return common.LeftPadBytes(ripemd.Sum(nil), 32), nil +} + +// data copy implemented as a native contract. +type dataCopy struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +// +// This method does not require any overflow checking as the input size gas costs +// required for anything significant is so high it's impossible to pay for. +func (c *dataCopy) RequiredGas(input []byte) uint64 { + return uint64(len(input)+31)/32*params.IdentityPerWordGas + params.IdentityBaseGas +} + +func (c *dataCopy) Run(in []byte) ([]byte, error) { + return in, nil +} + +// bigModExp implements a native big integer exponential modular operation. +type bigModExp struct { + eip2565 bool +} + +var ( + big0 = big.NewInt(0) + big1 = big.NewInt(1) + big3 = big.NewInt(3) + big4 = big.NewInt(4) + big7 = big.NewInt(7) + big8 = big.NewInt(8) + big16 = big.NewInt(16) + big20 = big.NewInt(20) + big32 = big.NewInt(32) + big64 = big.NewInt(64) + big96 = big.NewInt(96) + big480 = big.NewInt(480) + big1024 = big.NewInt(1024) + big3072 = big.NewInt(3072) + big199680 = big.NewInt(199680) +) + +// modexpMultComplexity implements bigModexp multComplexity formula, as defined in EIP-198 +// +// def mult_complexity(x): +// if x <= 64: return x ** 2 +// elif x <= 1024: return x ** 2 // 4 + 96 * x - 3072 +// else: return x ** 2 // 16 + 480 * x - 199680 +// +// where is x is max(length_of_MODULUS, length_of_BASE) +func modexpMultComplexity(x *big.Int) *big.Int { + switch { + case x.Cmp(big64) <= 0: + x.Mul(x, x) // x ** 2 + case x.Cmp(big1024) <= 0: + // (x ** 2 // 4 ) + ( 96 * x - 3072) + x = new(big.Int).Add( + new(big.Int).Div(new(big.Int).Mul(x, x), big4), + new(big.Int).Sub(new(big.Int).Mul(big96, x), big3072), + ) + default: + // (x ** 2 // 16) + (480 * x - 199680) + x = new(big.Int).Add( + new(big.Int).Div(new(big.Int).Mul(x, x), big16), + new(big.Int).Sub(new(big.Int).Mul(big480, x), big199680), + ) + } + return x +} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bigModExp) RequiredGas(input []byte) uint64 { + var ( + baseLen = new(big.Int).SetBytes(getData(input, 0, 32)) + expLen = new(big.Int).SetBytes(getData(input, 32, 32)) + modLen = new(big.Int).SetBytes(getData(input, 64, 32)) + ) + if len(input) > 96 { + input = input[96:] + } else { + input = input[:0] + } + // Retrieve the head 32 bytes of exp for the adjusted exponent length + var expHead *big.Int + if big.NewInt(int64(len(input))).Cmp(baseLen) <= 0 { + expHead = new(big.Int) + } else { + if expLen.Cmp(big32) > 0 { + expHead = new(big.Int).SetBytes(getData(input, baseLen.Uint64(), 32)) + } else { + expHead = new(big.Int).SetBytes(getData(input, baseLen.Uint64(), expLen.Uint64())) + } + } + // Calculate the adjusted exponent length + var msb int + if bitlen := expHead.BitLen(); bitlen > 0 { + msb = bitlen - 1 + } + adjExpLen := new(big.Int) + if expLen.Cmp(big32) > 0 { + adjExpLen.Sub(expLen, big32) + adjExpLen.Mul(big8, adjExpLen) + } + adjExpLen.Add(adjExpLen, big.NewInt(int64(msb))) + // Calculate the gas cost of the operation + gas := new(big.Int).Set(math.BigMax(modLen, baseLen)) + if c.eip2565 { + // EIP-2565 has three changes + // 1. Different multComplexity (inlined here) + // in EIP-2565 (https://eips.ethereum.org/EIPS/eip-2565): + // + // def mult_complexity(x): + // ceiling(x/8)^2 + // + //where is x is max(length_of_MODULUS, length_of_BASE) + gas = gas.Add(gas, big7) + gas = gas.Div(gas, big8) + gas.Mul(gas, gas) + + gas.Mul(gas, math.BigMax(adjExpLen, big1)) + // 2. Different divisor (`GQUADDIVISOR`) (3) + gas.Div(gas, big3) + if gas.BitLen() > 64 { + return math.MaxUint64 + } + // 3. Minimum price of 200 gas + if gas.Uint64() < 200 { + return 200 + } + return gas.Uint64() + } + gas = modexpMultComplexity(gas) + gas.Mul(gas, math.BigMax(adjExpLen, big1)) + gas.Div(gas, big20) + + if gas.BitLen() > 64 { + return math.MaxUint64 + } + return gas.Uint64() +} + +func (c *bigModExp) Run(input []byte) ([]byte, error) { + var ( + baseLen = new(big.Int).SetBytes(getData(input, 0, 32)).Uint64() + expLen = new(big.Int).SetBytes(getData(input, 32, 32)).Uint64() + modLen = new(big.Int).SetBytes(getData(input, 64, 32)).Uint64() + ) + if len(input) > 96 { + input = input[96:] + } else { + input = input[:0] + } + // Handle a special case when both the base and mod length is zero + if baseLen == 0 && modLen == 0 { + return []byte{}, nil + } + // Retrieve the operands and execute the exponentiation + var ( + base = new(big.Int).SetBytes(getData(input, 0, baseLen)) + exp = new(big.Int).SetBytes(getData(input, baseLen, expLen)) + mod = new(big.Int).SetBytes(getData(input, baseLen+expLen, modLen)) + ) + if mod.BitLen() == 0 { + // Modulo 0 is undefined, return zero + return common.LeftPadBytes([]byte{}, int(modLen)), nil + } + return common.LeftPadBytes(base.Exp(base, exp, mod).Bytes(), int(modLen)), nil +} + +// newCurvePoint unmarshals a binary blob into a bn256 elliptic curve point, +// returning it, or an error if the point is invalid. +func newCurvePoint(blob []byte) (*bn256.G1, error) { + p := new(bn256.G1) + if _, err := p.Unmarshal(blob); err != nil { + return nil, err + } + return p, nil +} + +// newTwistPoint unmarshals a binary blob into a bn256 elliptic curve point, +// returning it, or an error if the point is invalid. +func newTwistPoint(blob []byte) (*bn256.G2, error) { + p := new(bn256.G2) + if _, err := p.Unmarshal(blob); err != nil { + return nil, err + } + return p, nil +} + +// runBn256Add implements the Bn256Add precompile, referenced by both +// Byzantium and Istanbul operations. +func runBn256Add(input []byte) ([]byte, error) { + x, err := newCurvePoint(getData(input, 0, 64)) + if err != nil { + return nil, err + } + y, err := newCurvePoint(getData(input, 64, 64)) + if err != nil { + return nil, err + } + res := new(bn256.G1) + res.Add(x, y) + return res.Marshal(), nil +} + +// bn256Add implements a native elliptic curve point addition conforming to +// Istanbul consensus rules. +type bn256AddIstanbul struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bn256AddIstanbul) RequiredGas(input []byte) uint64 { + return params.Bn256AddGasIstanbul +} + +func (c *bn256AddIstanbul) Run(input []byte) ([]byte, error) { + return runBn256Add(input) +} + +// bn256AddByzantium implements a native elliptic curve point addition +// conforming to Byzantium consensus rules. +type bn256AddByzantium struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bn256AddByzantium) RequiredGas(input []byte) uint64 { + return params.Bn256AddGasByzantium +} + +func (c *bn256AddByzantium) Run(input []byte) ([]byte, error) { + return runBn256Add(input) +} + +// runBn256ScalarMul implements the Bn256ScalarMul precompile, referenced by +// both Byzantium and Istanbul operations. +func runBn256ScalarMul(input []byte) ([]byte, error) { + p, err := newCurvePoint(getData(input, 0, 64)) + if err != nil { + return nil, err + } + res := new(bn256.G1) + res.ScalarMult(p, new(big.Int).SetBytes(getData(input, 64, 32))) + return res.Marshal(), nil +} + +// bn256ScalarMulIstanbul implements a native elliptic curve scalar +// multiplication conforming to Istanbul consensus rules. +type bn256ScalarMulIstanbul struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bn256ScalarMulIstanbul) RequiredGas(input []byte) uint64 { + return params.Bn256ScalarMulGasIstanbul +} + +func (c *bn256ScalarMulIstanbul) Run(input []byte) ([]byte, error) { + return runBn256ScalarMul(input) +} + +// bn256ScalarMulByzantium implements a native elliptic curve scalar +// multiplication conforming to Byzantium consensus rules. +type bn256ScalarMulByzantium struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bn256ScalarMulByzantium) RequiredGas(input []byte) uint64 { + return params.Bn256ScalarMulGasByzantium +} + +func (c *bn256ScalarMulByzantium) Run(input []byte) ([]byte, error) { + return runBn256ScalarMul(input) +} + +var ( + // true32Byte is returned if the bn256 pairing check succeeds. + true32Byte = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1} + + // false32Byte is returned if the bn256 pairing check fails. + false32Byte = make([]byte, 32) + + // errBadPairingInput is returned if the bn256 pairing input is invalid. + errBadPairingInput = errors.New("bad elliptic curve pairing size") +) + +// runBn256Pairing implements the Bn256Pairing precompile, referenced by both +// Byzantium and Istanbul operations. +func runBn256Pairing(input []byte) ([]byte, error) { + // Handle some corner cases cheaply + if len(input)%192 > 0 { + return nil, errBadPairingInput + } + // Convert the input into a set of coordinates + var ( + cs []*bn256.G1 + ts []*bn256.G2 + ) + for i := 0; i < len(input); i += 192 { + c, err := newCurvePoint(input[i : i+64]) + if err != nil { + return nil, err + } + t, err := newTwistPoint(input[i+64 : i+192]) + if err != nil { + return nil, err + } + cs = append(cs, c) + ts = append(ts, t) + } + // Execute the pairing checks and return the results + if bn256.PairingCheck(cs, ts) { + return true32Byte, nil + } + return false32Byte, nil +} + +// bn256PairingIstanbul implements a pairing pre-compile for the bn256 curve +// conforming to Istanbul consensus rules. +type bn256PairingIstanbul struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bn256PairingIstanbul) RequiredGas(input []byte) uint64 { + return params.Bn256PairingBaseGasIstanbul + uint64(len(input)/192)*params.Bn256PairingPerPointGasIstanbul +} + +func (c *bn256PairingIstanbul) Run(input []byte) ([]byte, error) { + return runBn256Pairing(input) +} + +// bn256PairingByzantium implements a pairing pre-compile for the bn256 curve +// conforming to Byzantium consensus rules. +type bn256PairingByzantium struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bn256PairingByzantium) RequiredGas(input []byte) uint64 { + return params.Bn256PairingBaseGasByzantium + uint64(len(input)/192)*params.Bn256PairingPerPointGasByzantium +} + +func (c *bn256PairingByzantium) Run(input []byte) ([]byte, error) { + return runBn256Pairing(input) +} + +type blake2F struct{} + +func (c *blake2F) RequiredGas(input []byte) uint64 { + // If the input is malformed, we can't calculate the gas, return 0 and let the + // actual call choke and fault. + if len(input) != blake2FInputLength { + return 0 + } + return uint64(binary.BigEndian.Uint32(input[0:4])) +} + +const ( + blake2FInputLength = 213 + blake2FFinalBlockBytes = byte(1) + blake2FNonFinalBlockBytes = byte(0) +) + +var ( + errBlake2FInvalidInputLength = errors.New("invalid input length") + errBlake2FInvalidFinalFlag = errors.New("invalid final flag") +) + +func (c *blake2F) Run(input []byte) ([]byte, error) { + // Make sure the input is valid (correct length and final flag) + if len(input) != blake2FInputLength { + return nil, errBlake2FInvalidInputLength + } + if input[212] != blake2FNonFinalBlockBytes && input[212] != blake2FFinalBlockBytes { + return nil, errBlake2FInvalidFinalFlag + } + // Parse the input into the Blake2b call parameters + var ( + rounds = binary.BigEndian.Uint32(input[0:4]) + final = (input[212] == blake2FFinalBlockBytes) + + h [8]uint64 + m [16]uint64 + t [2]uint64 + ) + for i := 0; i < 8; i++ { + offset := 4 + i*8 + h[i] = binary.LittleEndian.Uint64(input[offset : offset+8]) + } + for i := 0; i < 16; i++ { + offset := 68 + i*8 + m[i] = binary.LittleEndian.Uint64(input[offset : offset+8]) + } + t[0] = binary.LittleEndian.Uint64(input[196:204]) + t[1] = binary.LittleEndian.Uint64(input[204:212]) + + // Execute the compression function, extract and return the result + blake2b.F(&h, m, t, final, rounds) + + output := make([]byte, 64) + for i := 0; i < 8; i++ { + offset := i * 8 + binary.LittleEndian.PutUint64(output[offset:offset+8], h[i]) + } + return output, nil +} + +var ( + errBLS12381InvalidInputLength = errors.New("invalid input length") + errBLS12381InvalidFieldElementTopBytes = errors.New("invalid field element top bytes") + errBLS12381G1PointSubgroup = errors.New("g1 point is not on correct subgroup") + errBLS12381G2PointSubgroup = errors.New("g2 point is not on correct subgroup") +) + +// bls12381G1Add implements EIP-2537 G1Add precompile. +type bls12381G1Add struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381G1Add) RequiredGas(input []byte) uint64 { + return params.Bls12381G1AddGas +} + +func (c *bls12381G1Add) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 G1Add precompile. + // > G1 addition call expects `256` bytes as an input that is interpreted as byte concatenation of two G1 points (`128` bytes each). + // > Output is an encoding of addition operation result - single G1 point (`128` bytes). + if len(input) != 256 { + return nil, errBLS12381InvalidInputLength + } + var err error + var p0, p1 *bls12381.PointG1 + + // Initialize G1 + g := bls12381.NewG1() + + // Decode G1 point p_0 + if p0, err = g.DecodePoint(input[:128]); err != nil { + return nil, err + } + // Decode G1 point p_1 + if p1, err = g.DecodePoint(input[128:]); err != nil { + return nil, err + } + + // Compute r = p_0 + p_1 + r := g.New() + g.Add(r, p0, p1) + + // Encode the G1 point result into 128 bytes + return g.EncodePoint(r), nil +} + +// bls12381G1Mul implements EIP-2537 G1Mul precompile. +type bls12381G1Mul struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381G1Mul) RequiredGas(input []byte) uint64 { + return params.Bls12381G1MulGas +} + +func (c *bls12381G1Mul) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 G1Mul precompile. + // > G1 multiplication call expects `160` bytes as an input that is interpreted as byte concatenation of encoding of G1 point (`128` bytes) and encoding of a scalar value (`32` bytes). + // > Output is an encoding of multiplication operation result - single G1 point (`128` bytes). + if len(input) != 160 { + return nil, errBLS12381InvalidInputLength + } + var err error + var p0 *bls12381.PointG1 + + // Initialize G1 + g := bls12381.NewG1() + + // Decode G1 point + if p0, err = g.DecodePoint(input[:128]); err != nil { + return nil, err + } + // Decode scalar value + e := new(big.Int).SetBytes(input[128:]) + + // Compute r = e * p_0 + r := g.New() + g.MulScalar(r, p0, e) + + // Encode the G1 point into 128 bytes + return g.EncodePoint(r), nil +} + +// bls12381G1MultiExp implements EIP-2537 G1MultiExp precompile. +type bls12381G1MultiExp struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381G1MultiExp) RequiredGas(input []byte) uint64 { + // Calculate G1 point, scalar value pair length + k := len(input) / 160 + if k == 0 { + // Return 0 gas for small input length + return 0 + } + // Lookup discount value for G1 point, scalar value pair length + var discount uint64 + if dLen := len(params.Bls12381MultiExpDiscountTable); k < dLen { + discount = params.Bls12381MultiExpDiscountTable[k-1] + } else { + discount = params.Bls12381MultiExpDiscountTable[dLen-1] + } + // Calculate gas and return the result + return (uint64(k) * params.Bls12381G1MulGas * discount) / 1000 +} + +func (c *bls12381G1MultiExp) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 G1MultiExp precompile. + // G1 multiplication call expects `160*k` bytes as an input that is interpreted as byte concatenation of `k` slices each of them being a byte concatenation of encoding of G1 point (`128` bytes) and encoding of a scalar value (`32` bytes). + // Output is an encoding of multiexponentiation operation result - single G1 point (`128` bytes). + k := len(input) / 160 + if len(input) == 0 || len(input)%160 != 0 { + return nil, errBLS12381InvalidInputLength + } + var err error + points := make([]*bls12381.PointG1, k) + scalars := make([]*big.Int, k) + + // Initialize G1 + g := bls12381.NewG1() + + // Decode point scalar pairs + for i := 0; i < k; i++ { + off := 160 * i + t0, t1, t2 := off, off+128, off+160 + // Decode G1 point + if points[i], err = g.DecodePoint(input[t0:t1]); err != nil { + return nil, err + } + // Decode scalar value + scalars[i] = new(big.Int).SetBytes(input[t1:t2]) + } + + // Compute r = e_0 * p_0 + e_1 * p_1 + ... + e_(k-1) * p_(k-1) + r := g.New() + g.MultiExp(r, points, scalars) + + // Encode the G1 point to 128 bytes + return g.EncodePoint(r), nil +} + +// bls12381G2Add implements EIP-2537 G2Add precompile. +type bls12381G2Add struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381G2Add) RequiredGas(input []byte) uint64 { + return params.Bls12381G2AddGas +} + +func (c *bls12381G2Add) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 G2Add precompile. + // > G2 addition call expects `512` bytes as an input that is interpreted as byte concatenation of two G2 points (`256` bytes each). + // > Output is an encoding of addition operation result - single G2 point (`256` bytes). + if len(input) != 512 { + return nil, errBLS12381InvalidInputLength + } + var err error + var p0, p1 *bls12381.PointG2 + + // Initialize G2 + g := bls12381.NewG2() + r := g.New() + + // Decode G2 point p_0 + if p0, err = g.DecodePoint(input[:256]); err != nil { + return nil, err + } + // Decode G2 point p_1 + if p1, err = g.DecodePoint(input[256:]); err != nil { + return nil, err + } + + // Compute r = p_0 + p_1 + g.Add(r, p0, p1) + + // Encode the G2 point into 256 bytes + return g.EncodePoint(r), nil +} + +// bls12381G2Mul implements EIP-2537 G2Mul precompile. +type bls12381G2Mul struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381G2Mul) RequiredGas(input []byte) uint64 { + return params.Bls12381G2MulGas +} + +func (c *bls12381G2Mul) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 G2MUL precompile logic. + // > G2 multiplication call expects `288` bytes as an input that is interpreted as byte concatenation of encoding of G2 point (`256` bytes) and encoding of a scalar value (`32` bytes). + // > Output is an encoding of multiplication operation result - single G2 point (`256` bytes). + if len(input) != 288 { + return nil, errBLS12381InvalidInputLength + } + var err error + var p0 *bls12381.PointG2 + + // Initialize G2 + g := bls12381.NewG2() + + // Decode G2 point + if p0, err = g.DecodePoint(input[:256]); err != nil { + return nil, err + } + // Decode scalar value + e := new(big.Int).SetBytes(input[256:]) + + // Compute r = e * p_0 + r := g.New() + g.MulScalar(r, p0, e) + + // Encode the G2 point into 256 bytes + return g.EncodePoint(r), nil +} + +// bls12381G2MultiExp implements EIP-2537 G2MultiExp precompile. +type bls12381G2MultiExp struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381G2MultiExp) RequiredGas(input []byte) uint64 { + // Calculate G2 point, scalar value pair length + k := len(input) / 288 + if k == 0 { + // Return 0 gas for small input length + return 0 + } + // Lookup discount value for G2 point, scalar value pair length + var discount uint64 + if dLen := len(params.Bls12381MultiExpDiscountTable); k < dLen { + discount = params.Bls12381MultiExpDiscountTable[k-1] + } else { + discount = params.Bls12381MultiExpDiscountTable[dLen-1] + } + // Calculate gas and return the result + return (uint64(k) * params.Bls12381G2MulGas * discount) / 1000 +} + +func (c *bls12381G2MultiExp) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 G2MultiExp precompile logic + // > G2 multiplication call expects `288*k` bytes as an input that is interpreted as byte concatenation of `k` slices each of them being a byte concatenation of encoding of G2 point (`256` bytes) and encoding of a scalar value (`32` bytes). + // > Output is an encoding of multiexponentiation operation result - single G2 point (`256` bytes). + k := len(input) / 288 + if len(input) == 0 || len(input)%288 != 0 { + return nil, errBLS12381InvalidInputLength + } + var err error + points := make([]*bls12381.PointG2, k) + scalars := make([]*big.Int, k) + + // Initialize G2 + g := bls12381.NewG2() + + // Decode point scalar pairs + for i := 0; i < k; i++ { + off := 288 * i + t0, t1, t2 := off, off+256, off+288 + // Decode G1 point + if points[i], err = g.DecodePoint(input[t0:t1]); err != nil { + return nil, err + } + // Decode scalar value + scalars[i] = new(big.Int).SetBytes(input[t1:t2]) + } + + // Compute r = e_0 * p_0 + e_1 * p_1 + ... + e_(k-1) * p_(k-1) + r := g.New() + g.MultiExp(r, points, scalars) + + // Encode the G2 point to 256 bytes. + return g.EncodePoint(r), nil +} + +// bls12381Pairing implements EIP-2537 Pairing precompile. +type bls12381Pairing struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381Pairing) RequiredGas(input []byte) uint64 { + return params.Bls12381PairingBaseGas + uint64(len(input)/384)*params.Bls12381PairingPerPairGas +} + +func (c *bls12381Pairing) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 Pairing precompile logic. + // > Pairing call expects `384*k` bytes as an inputs that is interpreted as byte concatenation of `k` slices. Each slice has the following structure: + // > - `128` bytes of G1 point encoding + // > - `256` bytes of G2 point encoding + // > Output is a `32` bytes where last single byte is `0x01` if pairing result is equal to multiplicative identity in a pairing target field and `0x00` otherwise + // > (which is equivalent of Big Endian encoding of Solidity values `uint256(1)` and `uin256(0)` respectively). + k := len(input) / 384 + if len(input) == 0 || len(input)%384 != 0 { + return nil, errBLS12381InvalidInputLength + } + + // Initialize BLS12-381 pairing engine + e := bls12381.NewPairingEngine() + g1, g2 := e.G1, e.G2 + + // Decode pairs + for i := 0; i < k; i++ { + off := 384 * i + t0, t1, t2 := off, off+128, off+384 + + // Decode G1 point + p1, err := g1.DecodePoint(input[t0:t1]) + if err != nil { + return nil, err + } + // Decode G2 point + p2, err := g2.DecodePoint(input[t1:t2]) + if err != nil { + return nil, err + } + + // 'point is on curve' check already done, + // Here we need to apply subgroup checks. + if !g1.InCorrectSubgroup(p1) { + return nil, errBLS12381G1PointSubgroup + } + if !g2.InCorrectSubgroup(p2) { + return nil, errBLS12381G2PointSubgroup + } + + // Update pairing engine with G1 and G2 ponits + e.AddPair(p1, p2) + } + // Prepare 32 byte output + out := make([]byte, 32) + + // Compute pairing and set the result + if e.Check() { + out[31] = 1 + } + return out, nil +} + +// decodeBLS12381FieldElement decodes BLS12-381 elliptic curve field element. +// Removes top 16 bytes of 64 byte input. +func decodeBLS12381FieldElement(in []byte) ([]byte, error) { + if len(in) != 64 { + return nil, errors.New("invalid field element length") + } + // check top bytes + for i := 0; i < 16; i++ { + if in[i] != byte(0x00) { + return nil, errBLS12381InvalidFieldElementTopBytes + } + } + out := make([]byte, 48) + copy(out[:], in[16:]) + return out, nil +} + +// bls12381MapG1 implements EIP-2537 MapG1 precompile. +type bls12381MapG1 struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381MapG1) RequiredGas(input []byte) uint64 { + return params.Bls12381MapG1Gas +} + +func (c *bls12381MapG1) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 Map_To_G1 precompile. + // > Field-to-curve call expects `64` bytes an an input that is interpreted as a an element of the base field. + // > Output of this call is `128` bytes and is G1 point following respective encoding rules. + if len(input) != 64 { + return nil, errBLS12381InvalidInputLength + } + + // Decode input field element + fe, err := decodeBLS12381FieldElement(input) + if err != nil { + return nil, err + } + + // Initialize G1 + g := bls12381.NewG1() + + // Compute mapping + r, err := g.MapToCurve(fe) + if err != nil { + return nil, err + } + + // Encode the G1 point to 128 bytes + return g.EncodePoint(r), nil +} + +// bls12381MapG2 implements EIP-2537 MapG2 precompile. +type bls12381MapG2 struct{} + +// RequiredGas returns the gas required to execute the pre-compiled contract. +func (c *bls12381MapG2) RequiredGas(input []byte) uint64 { + return params.Bls12381MapG2Gas +} + +func (c *bls12381MapG2) Run(input []byte) ([]byte, error) { + // Implements EIP-2537 Map_FP2_TO_G2 precompile logic. + // > Field-to-curve call expects `128` bytes an an input that is interpreted as a an element of the quadratic extension field. + // > Output of this call is `256` bytes and is G2 point following respective encoding rules. + if len(input) != 128 { + return nil, errBLS12381InvalidInputLength + } + + // Decode input field element + fe := make([]byte, 96) + c0, err := decodeBLS12381FieldElement(input[:64]) + if err != nil { + return nil, err + } + copy(fe[48:], c0) + c1, err := decodeBLS12381FieldElement(input[64:]) + if err != nil { + return nil, err + } + copy(fe[:48], c1) + + // Initialize G2 + g := bls12381.NewG2() + + // Compute mapping + r, err := g.MapToCurve(fe) + if err != nil { + return nil, err + } + + // Encode the G2 point to 256 bytes + return g.EncodePoint(r), nil +} diff --git a/core/vm/contracts_test.go b/core/vm/contracts_test.go new file mode 100644 index 0000000000..4b3614ba3c --- /dev/null +++ b/core/vm/contracts_test.go @@ -0,0 +1,403 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "bytes" + "encoding/json" + "fmt" + "io/ioutil" + "testing" + "time" + + "github.com/ethereum/go-ethereum/common" +) + +// precompiledTest defines the input/output pairs for precompiled contract tests. +type precompiledTest struct { + Input, Expected string + Gas uint64 + Name string + NoBenchmark bool // Benchmark primarily the worst-cases +} + +// precompiledFailureTest defines the input/error pairs for precompiled +// contract failure tests. +type precompiledFailureTest struct { + Input string + ExpectedError string + Name string +} + +// allPrecompiles does not map to the actual set of precompiles, as it also contains +// repriced versions of precompiles at certain slots +var allPrecompiles = map[common.Address]PrecompiledContract{ + common.BytesToAddress([]byte{1}): &ecrecover{}, + common.BytesToAddress([]byte{2}): &sha256hash{}, + common.BytesToAddress([]byte{3}): &ripemd160hash{}, + common.BytesToAddress([]byte{4}): &dataCopy{}, + common.BytesToAddress([]byte{5}): &bigModExp{eip2565: false}, + common.BytesToAddress([]byte{0xf5}): &bigModExp{eip2565: true}, + common.BytesToAddress([]byte{6}): &bn256AddIstanbul{}, + common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{}, + common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{}, + common.BytesToAddress([]byte{9}): &blake2F{}, + common.BytesToAddress([]byte{10}): &bls12381G1Add{}, + common.BytesToAddress([]byte{11}): &bls12381G1Mul{}, + common.BytesToAddress([]byte{12}): &bls12381G1MultiExp{}, + common.BytesToAddress([]byte{13}): &bls12381G2Add{}, + common.BytesToAddress([]byte{14}): &bls12381G2Mul{}, + common.BytesToAddress([]byte{15}): &bls12381G2MultiExp{}, + common.BytesToAddress([]byte{16}): &bls12381Pairing{}, + common.BytesToAddress([]byte{17}): &bls12381MapG1{}, + common.BytesToAddress([]byte{18}): &bls12381MapG2{}, +} + +// EIP-152 test vectors +var blake2FMalformedInputTests = []precompiledFailureTest{ + { + Input: "", + ExpectedError: errBlake2FInvalidInputLength.Error(), + Name: "vector 0: empty input", + }, + { + Input: "00000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001", + ExpectedError: errBlake2FInvalidInputLength.Error(), + Name: "vector 1: less than 213 bytes input", + }, + { + Input: "000000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001", + ExpectedError: errBlake2FInvalidInputLength.Error(), + Name: "vector 2: more than 213 bytes input", + }, + { + Input: "0000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000002", + ExpectedError: errBlake2FInvalidFinalFlag.Error(), + Name: "vector 3: malformed final block indicator flag", + }, +} + +func testPrecompiled(addr string, test precompiledTest, t *testing.T) { + p := allPrecompiles[common.HexToAddress(addr)] + in := common.Hex2Bytes(test.Input) + gas := p.RequiredGas(in) + t.Run(fmt.Sprintf("%s-Gas=%d", test.Name, gas), func(t *testing.T) { + if res, _, err := RunPrecompiledContract(p, in, gas); err != nil { + t.Error(err) + } else if common.Bytes2Hex(res) != test.Expected { + t.Errorf("Expected %v, got %v", test.Expected, common.Bytes2Hex(res)) + } + if expGas := test.Gas; expGas != gas { + t.Errorf("%v: gas wrong, expected %d, got %d", test.Name, expGas, gas) + } + // Verify that the precompile did not touch the input buffer + exp := common.Hex2Bytes(test.Input) + if !bytes.Equal(in, exp) { + t.Errorf("Precompiled %v modified input data", addr) + } + }) +} + +func testPrecompiledOOG(addr string, test precompiledTest, t *testing.T) { + p := allPrecompiles[common.HexToAddress(addr)] + in := common.Hex2Bytes(test.Input) + gas := p.RequiredGas(in) - 1 + + t.Run(fmt.Sprintf("%s-Gas=%d", test.Name, gas), func(t *testing.T) { + _, _, err := RunPrecompiledContract(p, in, gas) + if err.Error() != "out of gas" { + t.Errorf("Expected error [out of gas], got [%v]", err) + } + // Verify that the precompile did not touch the input buffer + exp := common.Hex2Bytes(test.Input) + if !bytes.Equal(in, exp) { + t.Errorf("Precompiled %v modified input data", addr) + } + }) +} + +func testPrecompiledFailure(addr string, test precompiledFailureTest, t *testing.T) { + p := allPrecompiles[common.HexToAddress(addr)] + in := common.Hex2Bytes(test.Input) + gas := p.RequiredGas(in) + t.Run(test.Name, func(t *testing.T) { + _, _, err := RunPrecompiledContract(p, in, gas) + if err.Error() != test.ExpectedError { + t.Errorf("Expected error [%v], got [%v]", test.ExpectedError, err) + } + // Verify that the precompile did not touch the input buffer + exp := common.Hex2Bytes(test.Input) + if !bytes.Equal(in, exp) { + t.Errorf("Precompiled %v modified input data", addr) + } + }) +} + +func benchmarkPrecompiled(addr string, test precompiledTest, bench *testing.B) { + if test.NoBenchmark { + return + } + p := allPrecompiles[common.HexToAddress(addr)] + in := common.Hex2Bytes(test.Input) + reqGas := p.RequiredGas(in) + + var ( + res []byte + err error + data = make([]byte, len(in)) + ) + + bench.Run(fmt.Sprintf("%s-Gas=%d", test.Name, reqGas), func(bench *testing.B) { + bench.ReportAllocs() + start := time.Now() + bench.ResetTimer() + for i := 0; i < bench.N; i++ { + copy(data, in) + res, _, err = RunPrecompiledContract(p, data, reqGas) + } + bench.StopTimer() + elapsed := uint64(time.Since(start)) + if elapsed < 1 { + elapsed = 1 + } + gasUsed := reqGas * uint64(bench.N) + bench.ReportMetric(float64(reqGas), "gas/op") + // Keep it as uint64, multiply 100 to get two digit float later + mgasps := (100 * 1000 * gasUsed) / elapsed + bench.ReportMetric(float64(mgasps)/100, "mgas/s") + //Check if it is correct + if err != nil { + bench.Error(err) + return + } + if common.Bytes2Hex(res) != test.Expected { + bench.Error(fmt.Sprintf("Expected %v, got %v", test.Expected, common.Bytes2Hex(res))) + return + } + }) +} + +// Benchmarks the sample inputs from the ECRECOVER precompile. +func BenchmarkPrecompiledEcrecover(bench *testing.B) { + t := precompiledTest{ + Input: "38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e000000000000000000000000000000000000000000000000000000000000001b38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e789d1dd423d25f0772d2748d60f7e4b81bb14d086eba8e8e8efb6dcff8a4ae02", + Expected: "000000000000000000000000ceaccac640adf55b2028469bd36ba501f28b699d", + Name: "", + } + benchmarkPrecompiled("01", t, bench) +} + +// Benchmarks the sample inputs from the SHA256 precompile. +func BenchmarkPrecompiledSha256(bench *testing.B) { + t := precompiledTest{ + Input: "38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e000000000000000000000000000000000000000000000000000000000000001b38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e789d1dd423d25f0772d2748d60f7e4b81bb14d086eba8e8e8efb6dcff8a4ae02", + Expected: "811c7003375852fabd0d362e40e68607a12bdabae61a7d068fe5fdd1dbbf2a5d", + Name: "128", + } + benchmarkPrecompiled("02", t, bench) +} + +// Benchmarks the sample inputs from the RIPEMD precompile. +func BenchmarkPrecompiledRipeMD(bench *testing.B) { + t := precompiledTest{ + Input: "38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e000000000000000000000000000000000000000000000000000000000000001b38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e789d1dd423d25f0772d2748d60f7e4b81bb14d086eba8e8e8efb6dcff8a4ae02", + Expected: "0000000000000000000000009215b8d9882ff46f0dfde6684d78e831467f65e6", + Name: "128", + } + benchmarkPrecompiled("03", t, bench) +} + +// Benchmarks the sample inputs from the identiy precompile. +func BenchmarkPrecompiledIdentity(bench *testing.B) { + t := precompiledTest{ + Input: "38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e000000000000000000000000000000000000000000000000000000000000001b38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e789d1dd423d25f0772d2748d60f7e4b81bb14d086eba8e8e8efb6dcff8a4ae02", + Expected: "38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e000000000000000000000000000000000000000000000000000000000000001b38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e789d1dd423d25f0772d2748d60f7e4b81bb14d086eba8e8e8efb6dcff8a4ae02", + Name: "128", + } + benchmarkPrecompiled("04", t, bench) +} + +// Tests the sample inputs from the ModExp EIP 198. +func TestPrecompiledModExp(t *testing.T) { testJson("modexp", "05", t) } +func BenchmarkPrecompiledModExp(b *testing.B) { benchJson("modexp", "05", b) } + +func TestPrecompiledModExpEip2565(t *testing.T) { testJson("modexp_eip2565", "f5", t) } +func BenchmarkPrecompiledModExpEip2565(b *testing.B) { benchJson("modexp_eip2565", "f5", b) } + +// Tests the sample inputs from the elliptic curve addition EIP 213. +func TestPrecompiledBn256Add(t *testing.T) { testJson("bn256Add", "06", t) } +func BenchmarkPrecompiledBn256Add(b *testing.B) { benchJson("bn256Add", "06", b) } + +// Tests OOG +func TestPrecompiledModExpOOG(t *testing.T) { + modexpTests, err := loadJson("modexp") + if err != nil { + t.Fatal(err) + } + for _, test := range modexpTests { + testPrecompiledOOG("05", test, t) + } +} + +// Tests the sample inputs from the elliptic curve scalar multiplication EIP 213. +func TestPrecompiledBn256ScalarMul(t *testing.T) { testJson("bn256ScalarMul", "07", t) } +func BenchmarkPrecompiledBn256ScalarMul(b *testing.B) { benchJson("bn256ScalarMul", "07", b) } + +// Tests the sample inputs from the elliptic curve pairing check EIP 197. +func TestPrecompiledBn256Pairing(t *testing.T) { testJson("bn256Pairing", "08", t) } +func BenchmarkPrecompiledBn256Pairing(b *testing.B) { benchJson("bn256Pairing", "08", b) } + +func TestPrecompiledBlake2F(t *testing.T) { testJson("blake2F", "09", t) } +func BenchmarkPrecompiledBlake2F(b *testing.B) { benchJson("blake2F", "09", b) } + +func TestPrecompileBlake2FMalformedInput(t *testing.T) { + for _, test := range blake2FMalformedInputTests { + testPrecompiledFailure("09", test, t) + } +} + +func TestPrecompiledEcrecover(t *testing.T) { testJson("ecRecover", "01", t) } + +func testJson(name, addr string, t *testing.T) { + tests, err := loadJson(name) + if err != nil { + t.Fatal(err) + } + for _, test := range tests { + testPrecompiled(addr, test, t) + } +} + +func testJsonFail(name, addr string, t *testing.T) { + tests, err := loadJsonFail(name) + if err != nil { + t.Fatal(err) + } + for _, test := range tests { + testPrecompiledFailure(addr, test, t) + } +} + +func benchJson(name, addr string, b *testing.B) { + tests, err := loadJson(name) + if err != nil { + b.Fatal(err) + } + for _, test := range tests { + benchmarkPrecompiled(addr, test, b) + } +} + +func TestPrecompiledBLS12381G1Add(t *testing.T) { testJson("blsG1Add", "0a", t) } +func TestPrecompiledBLS12381G1Mul(t *testing.T) { testJson("blsG1Mul", "0b", t) } +func TestPrecompiledBLS12381G1MultiExp(t *testing.T) { testJson("blsG1MultiExp", "0c", t) } +func TestPrecompiledBLS12381G2Add(t *testing.T) { testJson("blsG2Add", "0d", t) } +func TestPrecompiledBLS12381G2Mul(t *testing.T) { testJson("blsG2Mul", "0e", t) } +func TestPrecompiledBLS12381G2MultiExp(t *testing.T) { testJson("blsG2MultiExp", "0f", t) } +func TestPrecompiledBLS12381Pairing(t *testing.T) { testJson("blsPairing", "10", t) } +func TestPrecompiledBLS12381MapG1(t *testing.T) { testJson("blsMapG1", "11", t) } +func TestPrecompiledBLS12381MapG2(t *testing.T) { testJson("blsMapG2", "12", t) } + +func BenchmarkPrecompiledBLS12381G1Add(b *testing.B) { benchJson("blsG1Add", "0a", b) } +func BenchmarkPrecompiledBLS12381G1Mul(b *testing.B) { benchJson("blsG1Mul", "0b", b) } +func BenchmarkPrecompiledBLS12381G1MultiExp(b *testing.B) { benchJson("blsG1MultiExp", "0c", b) } +func BenchmarkPrecompiledBLS12381G2Add(b *testing.B) { benchJson("blsG2Add", "0d", b) } +func BenchmarkPrecompiledBLS12381G2Mul(b *testing.B) { benchJson("blsG2Mul", "0e", b) } +func BenchmarkPrecompiledBLS12381G2MultiExp(b *testing.B) { benchJson("blsG2MultiExp", "0f", b) } +func BenchmarkPrecompiledBLS12381Pairing(b *testing.B) { benchJson("blsPairing", "10", b) } +func BenchmarkPrecompiledBLS12381MapG1(b *testing.B) { benchJson("blsMapG1", "11", b) } +func BenchmarkPrecompiledBLS12381MapG2(b *testing.B) { benchJson("blsMapG2", "12", b) } + +// Failure tests +func TestPrecompiledBLS12381G1AddFail(t *testing.T) { testJsonFail("blsG1Add", "0a", t) } +func TestPrecompiledBLS12381G1MulFail(t *testing.T) { testJsonFail("blsG1Mul", "0b", t) } +func TestPrecompiledBLS12381G1MultiExpFail(t *testing.T) { testJsonFail("blsG1MultiExp", "0c", t) } +func TestPrecompiledBLS12381G2AddFail(t *testing.T) { testJsonFail("blsG2Add", "0d", t) } +func TestPrecompiledBLS12381G2MulFail(t *testing.T) { testJsonFail("blsG2Mul", "0e", t) } +func TestPrecompiledBLS12381G2MultiExpFail(t *testing.T) { testJsonFail("blsG2MultiExp", "0f", t) } +func TestPrecompiledBLS12381PairingFail(t *testing.T) { testJsonFail("blsPairing", "10", t) } +func TestPrecompiledBLS12381MapG1Fail(t *testing.T) { testJsonFail("blsMapG1", "11", t) } +func TestPrecompiledBLS12381MapG2Fail(t *testing.T) { testJsonFail("blsMapG2", "12", t) } + +func loadJson(name string) ([]precompiledTest, error) { + data, err := ioutil.ReadFile(fmt.Sprintf("testdata/precompiles/%v.json", name)) + if err != nil { + return nil, err + } + var testcases []precompiledTest + err = json.Unmarshal(data, &testcases) + return testcases, err +} + +func loadJsonFail(name string) ([]precompiledFailureTest, error) { + data, err := ioutil.ReadFile(fmt.Sprintf("testdata/precompiles/fail-%v.json", name)) + if err != nil { + return nil, err + } + var testcases []precompiledFailureTest + err = json.Unmarshal(data, &testcases) + return testcases, err +} + +// BenchmarkPrecompiledBLS12381G1MultiExpWorstCase benchmarks the worst case we could find that still fits a gaslimit of 10MGas. +func BenchmarkPrecompiledBLS12381G1MultiExpWorstCase(b *testing.B) { + task := "0000000000000000000000000000000008d8c4a16fb9d8800cce987c0eadbb6b3b005c213d44ecb5adeed713bae79d606041406df26169c35df63cf972c94be1" + + "0000000000000000000000000000000011bc8afe71676e6730702a46ef817060249cd06cd82e6981085012ff6d013aa4470ba3a2c71e13ef653e1e223d1ccfe9" + + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF" + input := task + for i := 0; i < 4787; i++ { + input = input + task + } + testcase := precompiledTest{ + Input: input, + Expected: "0000000000000000000000000000000005a6310ea6f2a598023ae48819afc292b4dfcb40aabad24a0c2cb6c19769465691859eeb2a764342a810c5038d700f18000000000000000000000000000000001268ac944437d15923dc0aec00daa9250252e43e4b35ec7a19d01f0d6cd27f6e139d80dae16ba1c79cc7f57055a93ff5", + Name: "WorstCaseG1", + NoBenchmark: false, + } + benchmarkPrecompiled("0c", testcase, b) +} + +// BenchmarkPrecompiledBLS12381G2MultiExpWorstCase benchmarks the worst case we could find that still fits a gaslimit of 10MGas. +func BenchmarkPrecompiledBLS12381G2MultiExpWorstCase(b *testing.B) { + task := "000000000000000000000000000000000d4f09acd5f362e0a516d4c13c5e2f504d9bd49fdfb6d8b7a7ab35a02c391c8112b03270d5d9eefe9b659dd27601d18f" + + "000000000000000000000000000000000fd489cb75945f3b5ebb1c0e326d59602934c8f78fe9294a8877e7aeb95de5addde0cb7ab53674df8b2cfbb036b30b99" + + "00000000000000000000000000000000055dbc4eca768714e098bbe9c71cf54b40f51c26e95808ee79225a87fb6fa1415178db47f02d856fea56a752d185f86b" + + "000000000000000000000000000000001239b7640f416eb6e921fe47f7501d504fadc190d9cf4e89ae2b717276739a2f4ee9f637c35e23c480df029fd8d247c7" + + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF" + input := task + for i := 0; i < 1040; i++ { + input = input + task + } + + testcase := precompiledTest{ + Input: input, + Expected: "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", + Name: "WorstCaseG2", + NoBenchmark: false, + } + benchmarkPrecompiled("0f", testcase, b) +} diff --git a/core/vm/doc.go b/core/vm/doc.go new file mode 100644 index 0000000000..85165df9b0 --- /dev/null +++ b/core/vm/doc.go @@ -0,0 +1,34 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +/* +Package vm implements the Ethereum Virtual Machine. + +The vm package implements one EVM, a byte code VM. The BC (Byte Code) VM loops +over a set of bytes and executes them according to the set of rules defined +in the Ethereum yellow paper. +*/ +package vm diff --git a/core/vm/eips.go b/core/vm/eips.go new file mode 100644 index 0000000000..420f933e4d --- /dev/null +++ b/core/vm/eips.go @@ -0,0 +1,177 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "fmt" + "sort" + + "github.com/ava-labs/subnet-evm/params" + "github.com/holiman/uint256" +) + +var activators = map[int]func(*JumpTable){ + 3198: enable3198, + 2929: enable2929, + 2200: enable2200, + 1884: enable1884, + 1344: enable1344, +} + +// EnableEIP enables the given EIP on the config. +// This operation writes in-place, and callers need to ensure that the globally +// defined jump tables are not polluted. +func EnableEIP(eipNum int, jt *JumpTable) error { + enablerFn, ok := activators[eipNum] + if !ok { + return fmt.Errorf("undefined eip %d", eipNum) + } + enablerFn(jt) + return nil +} + +func ValidEip(eipNum int) bool { + _, ok := activators[eipNum] + return ok +} + +func ActivateableEips() []string { + var nums []string + for k := range activators { + nums = append(nums, fmt.Sprintf("%d", k)) + } + sort.Strings(nums) + return nums +} + +// enable1884 applies EIP-1884 to the given jump table: +// - Increase cost of BALANCE to 700 +// - Increase cost of EXTCODEHASH to 700 +// - Increase cost of SLOAD to 800 +// - Define SELFBALANCE, with cost GasFastStep (5) +func enable1884(jt *JumpTable) { + // Gas cost changes + jt[SLOAD].constantGas = params.SloadGasEIP1884 + jt[BALANCE].constantGas = params.BalanceGasEIP1884 + jt[EXTCODEHASH].constantGas = params.ExtcodeHashGasEIP1884 + + // New opcode + jt[SELFBALANCE] = &operation{ + execute: opSelfBalance, + constantGas: GasFastStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + } +} + +func opSelfBalance(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + balance, _ := uint256.FromBig(interpreter.evm.StateDB.GetBalance(scope.Contract.Address())) + scope.Stack.push(balance) + return nil, nil +} + +// enable1344 applies EIP-1344 (ChainID Opcode) +// - Adds an opcode that returns the current chain’s EIP-155 unique identifier +func enable1344(jt *JumpTable) { + // New opcode + jt[CHAINID] = &operation{ + execute: opChainID, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + } +} + +// opChainID implements CHAINID opcode +func opChainID(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + chainId, _ := uint256.FromBig(interpreter.evm.chainConfig.ChainID) + scope.Stack.push(chainId) + return nil, nil +} + +// enable2200 applies EIP-2200 (Rebalance net-metered SSTORE) +func enable2200(jt *JumpTable) { + jt[SLOAD].constantGas = params.SloadGasEIP2200 + jt[SSTORE].dynamicGas = gasSStoreEIP2200 +} + +// enable2929 enables "EIP-2929: Gas cost increases for state access opcodes" +// https://eips.ethereum.org/EIPS/eip-2929 +func enable2929(jt *JumpTable) { + jt[SSTORE].dynamicGas = gasSStoreEIP2929 + + jt[SLOAD].constantGas = 0 + jt[SLOAD].dynamicGas = gasSLoadEIP2929 + + jt[EXTCODECOPY].constantGas = params.WarmStorageReadCostEIP2929 + jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP2929 + + jt[EXTCODESIZE].constantGas = params.WarmStorageReadCostEIP2929 + jt[EXTCODESIZE].dynamicGas = gasEip2929AccountCheck + + jt[EXTCODEHASH].constantGas = params.WarmStorageReadCostEIP2929 + jt[EXTCODEHASH].dynamicGas = gasEip2929AccountCheck + + jt[BALANCE].constantGas = params.WarmStorageReadCostEIP2929 + jt[BALANCE].dynamicGas = gasEip2929AccountCheck + + jt[CALL].constantGas = params.WarmStorageReadCostEIP2929 + jt[CALL].dynamicGas = gasCallEIP2929 + + jt[CALLCODE].constantGas = params.WarmStorageReadCostEIP2929 + jt[CALLCODE].dynamicGas = gasCallCodeEIP2929 + + jt[STATICCALL].constantGas = params.WarmStorageReadCostEIP2929 + jt[STATICCALL].dynamicGas = gasStaticCallEIP2929 + + jt[DELEGATECALL].constantGas = params.WarmStorageReadCostEIP2929 + jt[DELEGATECALL].dynamicGas = gasDelegateCallEIP2929 + + // This was previously part of the dynamic cost, but we're using it as a constantGas + // factor here + jt[SELFDESTRUCT].constantGas = params.SelfdestructGasEIP150 + jt[SELFDESTRUCT].dynamicGas = gasSelfdestructEIP2929 +} + +// enable3198 applies EIP-3198 (BASEFEE Opcode) +// - Adds an opcode that returns the current block's base fee. +func enable3198(jt *JumpTable) { + // New opcode + jt[BASEFEE] = &operation{ + execute: opBaseFee, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + } +} + +// opBaseFee implements BASEFEE opcode +func opBaseFee(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + baseFee, _ := uint256.FromBig(interpreter.evm.Context.BaseFee) + scope.Stack.push(baseFee) + return nil, nil +} diff --git a/core/vm/errors.go b/core/vm/errors.go new file mode 100644 index 0000000000..7f777dc392 --- /dev/null +++ b/core/vm/errors.go @@ -0,0 +1,77 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "errors" + "fmt" +) + +// List evm execution errors +var ( + ErrOutOfGas = errors.New("out of gas") + ErrCodeStoreOutOfGas = errors.New("contract creation code storage out of gas") + ErrDepth = errors.New("max call depth exceeded") + ErrInsufficientBalance = errors.New("insufficient balance for transfer") + ErrContractAddressCollision = errors.New("contract address collision") + ErrExecutionReverted = errors.New("execution reverted") + ErrMaxCodeSizeExceeded = errors.New("max code size exceeded") + ErrInvalidJump = errors.New("invalid jump destination") + ErrWriteProtection = errors.New("write protection") + ErrReturnDataOutOfBounds = errors.New("return data out of bounds") + ErrGasUintOverflow = errors.New("gas uint64 overflow") + ErrInvalidCode = errors.New("invalid code: must not begin with 0xef") +) + +// ErrStackUnderflow wraps an evm error when the items on the stack less +// than the minimal requirement. +type ErrStackUnderflow struct { + stackLen int + required int +} + +func (e *ErrStackUnderflow) Error() string { + return fmt.Sprintf("stack underflow (%d <=> %d)", e.stackLen, e.required) +} + +// ErrStackOverflow wraps an evm error when the items on the stack exceeds +// the maximum allowance. +type ErrStackOverflow struct { + stackLen int + limit int +} + +func (e *ErrStackOverflow) Error() string { + return fmt.Sprintf("stack limit reached %d (%d)", e.stackLen, e.limit) +} + +// ErrInvalidOpCode wraps an evm error when an invalid opcode is encountered. +type ErrInvalidOpCode struct { + opcode OpCode +} + +func (e *ErrInvalidOpCode) Error() string { return fmt.Sprintf("invalid opcode: %s", e.opcode) } diff --git a/core/vm/evm.go b/core/vm/evm.go new file mode 100644 index 0000000000..655bc56121 --- /dev/null +++ b/core/vm/evm.go @@ -0,0 +1,537 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "math/big" + "sync/atomic" + "time" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/holiman/uint256" +) + +// emptyCodeHash is used by create to ensure deployment is disallowed to already +// deployed contract addresses (relevant after the account abstraction). +var emptyCodeHash = crypto.Keccak256Hash(nil) + +type ( + // CanTransferFunc is the signature of a transfer guard function + CanTransferFunc func(StateDB, common.Address, *big.Int) bool + // TransferFunc is the signature of a transfer function + TransferFunc func(StateDB, common.Address, common.Address, *big.Int) + // GetHashFunc returns the n'th block hash in the blockchain + // and is used by the BLOCKHASH EVM op code. + GetHashFunc func(uint64) common.Hash +) + +func (evm *EVM) precompile(addr common.Address) (PrecompiledContract, bool) { + var precompiles map[common.Address]PrecompiledContract + switch { + case evm.chainRules.IsSubnetEVM: + precompiles = PrecompiledContractsBerlin + case evm.chainRules.IsIstanbul: + precompiles = PrecompiledContractsIstanbul + case evm.chainRules.IsByzantium: + precompiles = PrecompiledContractsByzantium + default: + precompiles = PrecompiledContractsHomestead + } + p, ok := precompiles[addr] + return p, ok +} + +// BlockContext provides the EVM with auxiliary information. Once provided +// it shouldn't be modified. +type BlockContext struct { + // CanTransfer returns whether the account contains + // sufficient ether to transfer the value + CanTransfer CanTransferFunc + // Transfer transfers ether from one account to the other + Transfer TransferFunc + // GetHash returns the hash corresponding to n + GetHash GetHashFunc + + // Block information + Coinbase common.Address // Provides information for COINBASE + GasLimit uint64 // Provides information for GASLIMIT + BlockNumber *big.Int // Provides information for NUMBER + Time *big.Int // Provides information for TIME + Difficulty *big.Int // Provides information for DIFFICULTY + BaseFee *big.Int // Provides information for BASEFEE +} + +// TxContext provides the EVM with information about a transaction. +// All fields can change between transactions. +type TxContext struct { + // Message information + Origin common.Address // Provides information for ORIGIN + GasPrice *big.Int // Provides information for GASPRICE +} + +// EVM is the Ethereum Virtual Machine base object and provides +// the necessary tools to run a contract on the given state with +// the provided context. It should be noted that any error +// generated through any of the calls should be considered a +// revert-state-and-consume-all-gas operation, no checks on +// specific errors should ever be performed. The interpreter makes +// sure that any errors generated are to be considered faulty code. +// +// The EVM should never be reused and is not thread safe. +type EVM struct { + // Context provides auxiliary blockchain related information + Context BlockContext + TxContext + // StateDB gives access to the underlying state + StateDB StateDB + // Depth is the current call stack + depth int + + // chainConfig contains information about the current chain + chainConfig *params.ChainConfig + // chain rules contains the chain rules for the current epoch + chainRules params.Rules + // virtual machine configuration options used to initialise the + // evm. + Config Config + // global (to this context) ethereum virtual machine + // used throughout the execution of the tx. + interpreter *EVMInterpreter + // abort is used to abort the EVM calling operations + // NOTE: must be set atomically + abort int32 + // callGasTemp holds the gas available for the current call. This is needed because the + // available gas is calculated in gasCall* according to the 63/64 rule and later + // applied in opCall*. + callGasTemp uint64 +} + +// NewEVM returns a new EVM. The returned EVM is not thread safe and should +// only ever be used *once*. +func NewEVM(blockCtx BlockContext, txCtx TxContext, statedb StateDB, chainConfig *params.ChainConfig, config Config) *EVM { + evm := &EVM{ + Context: blockCtx, + TxContext: txCtx, + StateDB: statedb, + Config: config, + chainConfig: chainConfig, + chainRules: chainConfig.AvalancheRules(blockCtx.BlockNumber, blockCtx.Time), + } + evm.interpreter = NewEVMInterpreter(evm, config) + return evm +} + +// Reset resets the EVM with a new transaction context.Reset +// This is not threadsafe and should only be done very cautiously. +func (evm *EVM) Reset(txCtx TxContext, statedb StateDB) { + evm.TxContext = txCtx + evm.StateDB = statedb +} + +// Cancel cancels any running EVM operation. This may be called concurrently and +// it's safe to be called multiple times. +func (evm *EVM) Cancel() { + atomic.StoreInt32(&evm.abort, 1) +} + +// Cancelled returns true if Cancel has been called +func (evm *EVM) Cancelled() bool { + return atomic.LoadInt32(&evm.abort) == 1 +} + +// Interpreter returns the current interpreter +func (evm *EVM) Interpreter() *EVMInterpreter { + return evm.interpreter +} + +// Call executes the contract associated with the addr with the given input as +// parameters. It also handles any necessary value transfer required and takes +// the necessary steps to create accounts and reverses the state in case of an +// execution error or failed value transfer. +func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas uint64, value *big.Int) (ret []byte, leftOverGas uint64, err error) { + if evm.Config.NoRecursion && evm.depth > 0 { + return nil, gas, nil + } + // Fail if we're trying to execute above the call depth limit + if evm.depth > int(params.CallCreateDepth) { + return nil, gas, ErrDepth + } + // Fail if we're trying to transfer more than the available balance + if value.Sign() != 0 && !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) { + return nil, gas, ErrInsufficientBalance + } + snapshot := evm.StateDB.Snapshot() + p, isPrecompile := evm.precompile(addr) + + if !evm.StateDB.Exist(addr) { + if !isPrecompile && evm.chainRules.IsEIP158 && value.Sign() == 0 { + // Calling a non existing account, don't do anything, but ping the tracer + if evm.Config.Debug { + if evm.depth == 0 { + evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value) + evm.Config.Tracer.CaptureEnd(ret, 0, 0, nil) + } else { + evm.Config.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value) + evm.Config.Tracer.CaptureExit(ret, 0, nil) + } + } + return nil, gas, nil + } + evm.StateDB.CreateAccount(addr) + } + evm.Context.Transfer(evm.StateDB, caller.Address(), addr, value) + + // Capture the tracer start/end events in debug mode + if evm.Config.Debug { + if evm.depth == 0 { + evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value) + defer func(startGas uint64, startTime time.Time) { // Lazy evaluation of the parameters + evm.Config.Tracer.CaptureEnd(ret, startGas-gas, time.Since(startTime), err) + }(gas, time.Now()) + } else { + // Handle tracer events for entering and exiting a call frame + evm.Config.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value) + defer func(startGas uint64) { + evm.Config.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } + } + + if isPrecompile { + ret, gas, err = RunPrecompiledContract(p, input, gas) + } else { + // Initialise a new contract and set the code that is to be used by the EVM. + // The contract is a scoped environment for this execution context only. + code := evm.StateDB.GetCode(addr) + if len(code) == 0 { + ret, err = nil, nil // gas is unchanged + } else { + addrCopy := addr + // If the account has no code, we can abort here + // The depth-check is already done, and precompiles handled above + contract := NewContract(caller, AccountRef(addrCopy), value, gas) + contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), code) + ret, err = evm.interpreter.Run(contract, input, false) + gas = contract.Gas + } + } + // When an error was returned by the EVM or when setting the creation code + // above we revert to the snapshot and consume any gas remaining. Additionally + // when we're in homestead this also counts for code storage gas errors. + if err != nil { + evm.StateDB.RevertToSnapshot(snapshot) + if err != ErrExecutionReverted { + gas = 0 + } + // TODO: consider clearing up unused snapshots: + //} else { + // evm.StateDB.DiscardSnapshot(snapshot) + } + return ret, gas, err +} + +// CallCode executes the contract associated with the addr with the given input +// as parameters. It also handles any necessary value transfer required and takes +// the necessary steps to create accounts and reverses the state in case of an +// execution error or failed value transfer. +// +// CallCode differs from Call in the sense that it executes the given address' +// code with the caller as context. +func (evm *EVM) CallCode(caller ContractRef, addr common.Address, input []byte, gas uint64, value *big.Int) (ret []byte, leftOverGas uint64, err error) { + if evm.Config.NoRecursion && evm.depth > 0 { + return nil, gas, nil + } + // Fail if we're trying to execute above the call depth limit + if evm.depth > int(params.CallCreateDepth) { + return nil, gas, ErrDepth + } + // Fail if we're trying to transfer more than the available balance + // Note although it's noop to transfer X ether to caller itself. But + // if caller doesn't have enough balance, it would be an error to allow + // over-charging itself. So the check here is necessary. + if !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) { + return nil, gas, ErrInsufficientBalance + } + snapshot := evm.StateDB.Snapshot() + + // Invoke tracer hooks that signal entering/exiting a call frame + if evm.Config.Debug { + evm.Config.Tracer.CaptureEnter(CALLCODE, caller.Address(), addr, input, gas, value) + defer func(startGas uint64) { + evm.Config.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } + + // It is allowed to call precompiles, even via delegatecall + if p, isPrecompile := evm.precompile(addr); isPrecompile { + ret, gas, err = RunPrecompiledContract(p, input, gas) + } else { + addrCopy := addr + // Initialise a new contract and set the code that is to be used by the EVM. + // The contract is a scoped environment for this execution context only. + contract := NewContract(caller, AccountRef(caller.Address()), value, gas) + contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), evm.StateDB.GetCode(addrCopy)) + ret, err = evm.interpreter.Run(contract, input, false) + gas = contract.Gas + } + if err != nil { + evm.StateDB.RevertToSnapshot(snapshot) + if err != ErrExecutionReverted { + gas = 0 + } + } + return ret, gas, err +} + +// DelegateCall executes the contract associated with the addr with the given input +// as parameters. It reverses the state in case of an execution error. +// +// DelegateCall differs from CallCode in the sense that it executes the given address' +// code with the caller as context and the caller is set to the caller of the caller. +func (evm *EVM) DelegateCall(caller ContractRef, addr common.Address, input []byte, gas uint64) (ret []byte, leftOverGas uint64, err error) { + if evm.Config.NoRecursion && evm.depth > 0 { + return nil, gas, nil + } + // Fail if we're trying to execute above the call depth limit + if evm.depth > int(params.CallCreateDepth) { + return nil, gas, ErrDepth + } + snapshot := evm.StateDB.Snapshot() + + // Invoke tracer hooks that signal entering/exiting a call frame + if evm.Config.Debug { + evm.Config.Tracer.CaptureEnter(DELEGATECALL, caller.Address(), addr, input, gas, nil) + defer func(startGas uint64) { + evm.Config.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } + + // It is allowed to call precompiles, even via delegatecall + if p, isPrecompile := evm.precompile(addr); isPrecompile { + ret, gas, err = RunPrecompiledContract(p, input, gas) + } else { + addrCopy := addr + // Initialise a new contract and make initialise the delegate values + contract := NewContract(caller, AccountRef(caller.Address()), nil, gas).AsDelegate() + contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), evm.StateDB.GetCode(addrCopy)) + ret, err = evm.interpreter.Run(contract, input, false) + gas = contract.Gas + } + if err != nil { + evm.StateDB.RevertToSnapshot(snapshot) + if err != ErrExecutionReverted { + gas = 0 + } + } + return ret, gas, err +} + +// StaticCall executes the contract associated with the addr with the given input +// as parameters while disallowing any modifications to the state during the call. +// Opcodes that attempt to perform such modifications will result in exceptions +// instead of performing the modifications. +func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte, gas uint64) (ret []byte, leftOverGas uint64, err error) { + if evm.Config.NoRecursion && evm.depth > 0 { + return nil, gas, nil + } + // Fail if we're trying to execute above the call depth limit + if evm.depth > int(params.CallCreateDepth) { + return nil, gas, ErrDepth + } + // We take a snapshot here. This is a bit counter-intuitive, and could probably be skipped. + // However, even a staticcall is considered a 'touch'. On mainnet, static calls were introduced + // after all empty accounts were deleted, so this is not required. However, if we omit this, + // then certain tests start failing; stRevertTest/RevertPrecompiledTouchExactOOG.json. + // We could change this, but for now it's left for legacy reasons + snapshot := evm.StateDB.Snapshot() + + // We do an AddBalance of zero here, just in order to trigger a touch. + // This doesn't matter on Mainnet, where all empties are gone at the time of Byzantium, + // but is the correct thing to do and matters on other networks, in tests, and potential + // future scenarios + evm.StateDB.AddBalance(addr, big0) + + // Invoke tracer hooks that signal entering/exiting a call frame + if evm.Config.Debug { + evm.Config.Tracer.CaptureEnter(STATICCALL, caller.Address(), addr, input, gas, nil) + defer func(startGas uint64) { + evm.Config.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } + + if p, isPrecompile := evm.precompile(addr); isPrecompile { + ret, gas, err = RunPrecompiledContract(p, input, gas) + } else { + // At this point, we use a copy of address. If we don't, the go compiler will + // leak the 'contract' to the outer scope, and make allocation for 'contract' + // even if the actual execution ends on RunPrecompiled above. + addrCopy := addr + // Initialise a new contract and set the code that is to be used by the EVM. + // The contract is a scoped environment for this execution context only. + contract := NewContract(caller, AccountRef(addrCopy), new(big.Int), gas) + contract.SetCallCode(&addrCopy, evm.StateDB.GetCodeHash(addrCopy), evm.StateDB.GetCode(addrCopy)) + // When an error was returned by the EVM or when setting the creation code + // above we revert to the snapshot and consume any gas remaining. Additionally + // when we're in Homestead this also counts for code storage gas errors. + ret, err = evm.interpreter.Run(contract, input, true) + gas = contract.Gas + } + if err != nil { + evm.StateDB.RevertToSnapshot(snapshot) + if err != ErrExecutionReverted { + gas = 0 + } + } + return ret, gas, err +} + +type codeAndHash struct { + code []byte + hash common.Hash +} + +func (c *codeAndHash) Hash() common.Hash { + if c.hash == (common.Hash{}) { + c.hash = crypto.Keccak256Hash(c.code) + } + return c.hash +} + +// create creates a new contract using code as deployment code. +func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, value *big.Int, address common.Address, typ OpCode) ([]byte, common.Address, uint64, error) { + // Depth check execution. Fail if we're trying to execute above the + // limit. + if evm.depth > int(params.CallCreateDepth) { + return nil, common.Address{}, gas, ErrDepth + } + if !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) { + return nil, common.Address{}, gas, ErrInsufficientBalance + } + nonce := evm.StateDB.GetNonce(caller.Address()) + evm.StateDB.SetNonce(caller.Address(), nonce+1) + // We add this to the access list _before_ taking a snapshot. Even if the creation fails, + // the access-list change should not be rolled back + if evm.chainRules.IsSubnetEVM { + evm.StateDB.AddAddressToAccessList(address) + } + // Ensure there's no existing contract already at the designated address + contractHash := evm.StateDB.GetCodeHash(address) + if evm.StateDB.GetNonce(address) != 0 || (contractHash != (common.Hash{}) && contractHash != emptyCodeHash) { + return nil, common.Address{}, 0, ErrContractAddressCollision + } + // Create a new account on the state + snapshot := evm.StateDB.Snapshot() + evm.StateDB.CreateAccount(address) + if evm.chainRules.IsEIP158 { + evm.StateDB.SetNonce(address, 1) + } + evm.Context.Transfer(evm.StateDB, caller.Address(), address, value) + + // Initialise a new contract and set the code that is to be used by the EVM. + // The contract is a scoped environment for this execution context only. + contract := NewContract(caller, AccountRef(address), value, gas) + contract.SetCodeOptionalHash(&address, codeAndHash) + + if evm.Config.NoRecursion && evm.depth > 0 { + return nil, address, gas, nil + } + + if evm.Config.Debug { + if evm.depth == 0 { + evm.Config.Tracer.CaptureStart(evm, caller.Address(), address, true, codeAndHash.code, gas, value) + } else { + evm.Config.Tracer.CaptureEnter(typ, caller.Address(), address, codeAndHash.code, gas, value) + } + } + + start := time.Now() + + ret, err := evm.interpreter.Run(contract, nil, false) + + // Check whether the max code size has been exceeded, assign err if the case. + if err == nil && evm.chainRules.IsEIP158 && len(ret) > params.MaxCodeSize { + err = ErrMaxCodeSizeExceeded + } + + // Reject code starting with 0xEF if EIP-3541 is enabled. + if err == nil && len(ret) >= 1 && ret[0] == 0xEF && evm.chainRules.IsSubnetEVM { + err = ErrInvalidCode + } + + // if the contract creation ran successfully and no errors were returned + // calculate the gas required to store the code. If the code could not + // be stored due to not enough gas set an error and let it be handled + // by the error checking condition below. + if err == nil { + createDataGas := uint64(len(ret)) * params.CreateDataGas + if contract.UseGas(createDataGas) { + evm.StateDB.SetCode(address, ret) + } else { + err = ErrCodeStoreOutOfGas + } + } + + // When an error was returned by the EVM or when setting the creation code + // above we revert to the snapshot and consume any gas remaining. Additionally + // when we're in homestead this also counts for code storage gas errors. + if err != nil && (evm.chainRules.IsHomestead || err != ErrCodeStoreOutOfGas) { + evm.StateDB.RevertToSnapshot(snapshot) + if err != ErrExecutionReverted { + contract.UseGas(contract.Gas) + } + } + + if evm.Config.Debug { + if evm.depth == 0 { + evm.Config.Tracer.CaptureEnd(ret, gas-contract.Gas, time.Since(start), err) + } else { + evm.Config.Tracer.CaptureExit(ret, gas-contract.Gas, err) + } + } + return ret, address, contract.Gas, err +} + +// Create creates a new contract using code as deployment code. +func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) { + contractAddr = crypto.CreateAddress(caller.Address(), evm.StateDB.GetNonce(caller.Address())) + return evm.create(caller, &codeAndHash{code: code}, gas, value, contractAddr, CREATE) +} + +// Create2 creates a new contract using code as deployment code. +// +// The different between Create2 with Create is Create2 uses sha3(0xff ++ msg.sender ++ salt ++ sha3(init_code))[12:] +// instead of the usual sender-and-nonce-hash as the address where the contract is initialized at. +func (evm *EVM) Create2(caller ContractRef, code []byte, gas uint64, endowment *big.Int, salt *uint256.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) { + codeAndHash := &codeAndHash{code: code} + contractAddr = crypto.CreateAddress2(caller.Address(), salt.Bytes32(), codeAndHash.Hash().Bytes()) + return evm.create(caller, codeAndHash, gas, endowment, contractAddr, CREATE2) +} + +// ChainConfig returns the environment's chain configuration +func (evm *EVM) ChainConfig() *params.ChainConfig { return evm.chainConfig } diff --git a/core/vm/gas.go b/core/vm/gas.go new file mode 100644 index 0000000000..1f356bbbbc --- /dev/null +++ b/core/vm/gas.go @@ -0,0 +1,63 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "github.com/holiman/uint256" +) + +// Gas costs +const ( + GasQuickStep uint64 = 2 + GasFastestStep uint64 = 3 + GasFastStep uint64 = 5 + GasMidStep uint64 = 8 + GasSlowStep uint64 = 10 + GasExtStep uint64 = 20 +) + +// callGas returns the actual gas cost of the call. +// +// The cost of gas was changed during the homestead price change HF. +// As part of EIP 150 (TangerineWhistle), the returned gas is gas - base * 63 / 64. +func callGas(isEip150 bool, availableGas, base uint64, callCost *uint256.Int) (uint64, error) { + if isEip150 { + availableGas = availableGas - base + gas := availableGas - availableGas/64 + // If the bit length exceeds 64 bit we know that the newly calculated "gas" for EIP150 + // is smaller than the requested amount. Therefore we return the new gas instead + // of returning an error. + if !callCost.IsUint64() || gas < callCost.Uint64() { + return gas, nil + } + } + if !callCost.IsUint64() { + return 0, ErrGasUintOverflow + } + + return callCost.Uint64(), nil +} diff --git a/core/vm/gas_table.go b/core/vm/gas_table.go new file mode 100644 index 0000000000..fd300918a1 --- /dev/null +++ b/core/vm/gas_table.go @@ -0,0 +1,451 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "errors" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" +) + +// memoryGasCost calculates the quadratic gas for memory expansion. It does so +// only for the memory region that is expanded, not the total memory. +func memoryGasCost(mem *Memory, newMemSize uint64) (uint64, error) { + if newMemSize == 0 { + return 0, nil + } + // The maximum that will fit in a uint64 is max_word_count - 1. Anything above + // that will result in an overflow. Additionally, a newMemSize which results in + // a newMemSizeWords larger than 0xFFFFFFFF will cause the square operation to + // overflow. The constant 0x1FFFFFFFE0 is the highest number that can be used + // without overflowing the gas calculation. + if newMemSize > 0x1FFFFFFFE0 { + return 0, ErrGasUintOverflow + } + newMemSizeWords := toWordSize(newMemSize) + newMemSize = newMemSizeWords * 32 + + if newMemSize > uint64(mem.Len()) { + square := newMemSizeWords * newMemSizeWords + linCoef := newMemSizeWords * params.MemoryGas + quadCoef := square / params.QuadCoeffDiv + newTotalFee := linCoef + quadCoef + + fee := newTotalFee - mem.lastGasCost + mem.lastGasCost = newTotalFee + + return fee, nil + } + return 0, nil +} + +// memoryCopierGas creates the gas functions for the following opcodes, and takes +// the stack position of the operand which determines the size of the data to copy +// as argument: +// CALLDATACOPY (stack position 2) +// CODECOPY (stack position 2) +// EXTCODECOPY (stack position 3) +// RETURNDATACOPY (stack position 2) +func memoryCopierGas(stackpos int) gasFunc { + return func(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + // Gas for expanding the memory + gas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + // And gas for copying data, charged per word at param.CopyGas + words, overflow := stack.Back(stackpos).Uint64WithOverflow() + if overflow { + return 0, ErrGasUintOverflow + } + + if words, overflow = math.SafeMul(toWordSize(words), params.CopyGas); overflow { + return 0, ErrGasUintOverflow + } + + if gas, overflow = math.SafeAdd(gas, words); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil + } +} + +var ( + gasCallDataCopy = memoryCopierGas(2) + gasCodeCopy = memoryCopierGas(2) + gasExtCodeCopy = memoryCopierGas(3) + gasReturnDataCopy = memoryCopierGas(2) +) + +func gasSStore(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + var ( + y, x = stack.Back(1), stack.Back(0) + current = evm.StateDB.GetState(contract.Address(), x.Bytes32()) + ) + // The legacy gas metering only takes into consideration the current state + // Legacy rules should be applied if we are in Petersburg (removal of EIP-1283) + // OR Constantinople is not active + if evm.chainRules.IsPetersburg || !evm.chainRules.IsConstantinople { + // This checks for 3 scenario's and calculates gas accordingly: + // + // 1. From a zero-value address to a non-zero value (NEW VALUE) + // 2. From a non-zero value address to a zero-value address (DELETE) + // 3. From a non-zero to a non-zero (CHANGE) + switch { + case current == (common.Hash{}) && y.Sign() != 0: // 0 => non 0 + return params.SstoreSetGas, nil + case current != (common.Hash{}) && y.Sign() == 0: // non 0 => 0 + evm.StateDB.AddRefund(params.SstoreRefundGas) + return params.SstoreClearGas, nil + default: // non 0 => non 0 (or 0 => 0) + return params.SstoreResetGas, nil + } + } + // The new gas metering is based on net gas costs (EIP-1283): + // + // 1. If current value equals new value (this is a no-op), 200 gas is deducted. + // 2. If current value does not equal new value + // 2.1. If original value equals current value (this storage slot has not been changed by the current execution context) + // 2.1.1. If original value is 0, 20000 gas is deducted. + // 2.1.2. Otherwise, 5000 gas is deducted. If new value is 0, add 15000 gas to refund counter. + // 2.2. If original value does not equal current value (this storage slot is dirty), 200 gas is deducted. Apply both of the following clauses. + // 2.2.1. If original value is not 0 + // 2.2.1.1. If current value is 0 (also means that new value is not 0), remove 15000 gas from refund counter. We can prove that refund counter will never go below 0. + // 2.2.1.2. If new value is 0 (also means that current value is not 0), add 15000 gas to refund counter. + // 2.2.2. If original value equals new value (this storage slot is reset) + // 2.2.2.1. If original value is 0, add 19800 gas to refund counter. + // 2.2.2.2. Otherwise, add 4800 gas to refund counter. + value := common.Hash(y.Bytes32()) + if current == value { // noop (1) + return params.NetSstoreNoopGas, nil + } + original := evm.StateDB.GetCommittedState(contract.Address(), x.Bytes32()) + if original == current { + if original == (common.Hash{}) { // create slot (2.1.1) + return params.NetSstoreInitGas, nil + } + if value == (common.Hash{}) { // delete slot (2.1.2b) + evm.StateDB.AddRefund(params.NetSstoreClearRefund) + } + return params.NetSstoreCleanGas, nil // write existing slot (2.1.2) + } + if original != (common.Hash{}) { + if current == (common.Hash{}) { // recreate slot (2.2.1.1) + evm.StateDB.SubRefund(params.NetSstoreClearRefund) + } else if value == (common.Hash{}) { // delete slot (2.2.1.2) + evm.StateDB.AddRefund(params.NetSstoreClearRefund) + } + } + if original == value { + if original == (common.Hash{}) { // reset to original inexistent slot (2.2.2.1) + evm.StateDB.AddRefund(params.NetSstoreResetClearRefund) + } else { // reset to original existing slot (2.2.2.2) + evm.StateDB.AddRefund(params.NetSstoreResetRefund) + } + } + return params.NetSstoreDirtyGas, nil +} + +// 0. If *gasleft* is less than or equal to 2300, fail the current call. +// 1. If current value equals new value (this is a no-op), SLOAD_GAS is deducted. +// 2. If current value does not equal new value: +// 2.1. If original value equals current value (this storage slot has not been changed by the current execution context): +// 2.1.1. If original value is 0, SSTORE_SET_GAS (20K) gas is deducted. +// 2.1.2. Otherwise, SSTORE_RESET_GAS gas is deducted. If new value is 0, add SSTORE_CLEARS_SCHEDULE to refund counter. +// 2.2. If original value does not equal current value (this storage slot is dirty), SLOAD_GAS gas is deducted. Apply both of the following clauses: +// 2.2.1. If original value is not 0: +// 2.2.1.1. If current value is 0 (also means that new value is not 0), subtract SSTORE_CLEARS_SCHEDULE gas from refund counter. +// 2.2.1.2. If new value is 0 (also means that current value is not 0), add SSTORE_CLEARS_SCHEDULE gas to refund counter. +// 2.2.2. If original value equals new value (this storage slot is reset): +// 2.2.2.1. If original value is 0, add SSTORE_SET_GAS - SLOAD_GAS to refund counter. +// 2.2.2.2. Otherwise, add SSTORE_RESET_GAS - SLOAD_GAS gas to refund counter. +func gasSStoreEIP2200(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + // If we fail the minimum gas availability invariant, fail (0) + if contract.Gas <= params.SstoreSentryGasEIP2200 { + return 0, errors.New("not enough gas for reentrancy sentry") + } + // Gas sentry honoured, do the actual gas calculation based on the stored value + var ( + y, x = stack.Back(1), stack.Back(0) + current = evm.StateDB.GetState(contract.Address(), x.Bytes32()) + ) + value := common.Hash(y.Bytes32()) + + if current == value { // noop (1) + return params.SloadGasEIP2200, nil + } + original := evm.StateDB.GetCommittedState(contract.Address(), x.Bytes32()) + if original == current { + if original == (common.Hash{}) { // create slot (2.1.1) + return params.SstoreSetGasEIP2200, nil + } + if value == (common.Hash{}) { // delete slot (2.1.2b) + evm.StateDB.AddRefund(params.SstoreClearsScheduleRefundEIP2200) + } + return params.SstoreResetGasEIP2200, nil // write existing slot (2.1.2) + } + if original != (common.Hash{}) { + if current == (common.Hash{}) { // recreate slot (2.2.1.1) + evm.StateDB.SubRefund(params.SstoreClearsScheduleRefundEIP2200) + } else if value == (common.Hash{}) { // delete slot (2.2.1.2) + evm.StateDB.AddRefund(params.SstoreClearsScheduleRefundEIP2200) + } + } + if original == value { + if original == (common.Hash{}) { // reset to original inexistent slot (2.2.2.1) + evm.StateDB.AddRefund(params.SstoreSetGasEIP2200 - params.SloadGasEIP2200) + } else { // reset to original existing slot (2.2.2.2) + evm.StateDB.AddRefund(params.SstoreResetGasEIP2200 - params.SloadGasEIP2200) + } + } + return params.SloadGasEIP2200, nil // dirty update (2.2) +} + +func makeGasLog(n uint64) gasFunc { + return func(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + requestedSize, overflow := stack.Back(1).Uint64WithOverflow() + if overflow { + return 0, ErrGasUintOverflow + } + + gas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + + if gas, overflow = math.SafeAdd(gas, params.LogGas); overflow { + return 0, ErrGasUintOverflow + } + if gas, overflow = math.SafeAdd(gas, n*params.LogTopicGas); overflow { + return 0, ErrGasUintOverflow + } + + var memorySizeGas uint64 + if memorySizeGas, overflow = math.SafeMul(requestedSize, params.LogDataGas); overflow { + return 0, ErrGasUintOverflow + } + if gas, overflow = math.SafeAdd(gas, memorySizeGas); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil + } +} + +func gasSha3(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + gas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + wordGas, overflow := stack.Back(1).Uint64WithOverflow() + if overflow { + return 0, ErrGasUintOverflow + } + if wordGas, overflow = math.SafeMul(toWordSize(wordGas), params.Sha3WordGas); overflow { + return 0, ErrGasUintOverflow + } + if gas, overflow = math.SafeAdd(gas, wordGas); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +// pureMemoryGascost is used by several operations, which aside from their +// static cost have a dynamic cost which is solely based on the memory +// expansion +func pureMemoryGascost(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + return memoryGasCost(mem, memorySize) +} + +var ( + gasReturn = pureMemoryGascost + gasRevert = pureMemoryGascost + gasMLoad = pureMemoryGascost + gasMStore8 = pureMemoryGascost + gasMStore = pureMemoryGascost + gasCreate = pureMemoryGascost +) + +func gasCreate2(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + gas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + wordGas, overflow := stack.Back(2).Uint64WithOverflow() + if overflow { + return 0, ErrGasUintOverflow + } + if wordGas, overflow = math.SafeMul(toWordSize(wordGas), params.Sha3WordGas); overflow { + return 0, ErrGasUintOverflow + } + if gas, overflow = math.SafeAdd(gas, wordGas); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +func gasExpFrontier(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + expByteLen := uint64((stack.data[stack.len()-2].BitLen() + 7) / 8) + + var ( + gas = expByteLen * params.ExpByteFrontier // no overflow check required. Max is 256 * ExpByte gas + overflow bool + ) + if gas, overflow = math.SafeAdd(gas, params.ExpGas); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +func gasExpEIP158(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + expByteLen := uint64((stack.data[stack.len()-2].BitLen() + 7) / 8) + + var ( + gas = expByteLen * params.ExpByteEIP158 // no overflow check required. Max is 256 * ExpByte gas + overflow bool + ) + if gas, overflow = math.SafeAdd(gas, params.ExpGas); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +func gasCall(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + var ( + gas uint64 + transfersValue = !stack.Back(2).IsZero() + address = common.Address(stack.Back(1).Bytes20()) + ) + if evm.chainRules.IsEIP158 { + if transfersValue && evm.StateDB.Empty(address) { + gas += params.CallNewAccountGas + } + } else if !evm.StateDB.Exist(address) { + gas += params.CallNewAccountGas + } + if transfersValue { + gas += params.CallValueTransferGas + } + memoryGas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + var overflow bool + if gas, overflow = math.SafeAdd(gas, memoryGas); overflow { + return 0, ErrGasUintOverflow + } + + evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0)) + if err != nil { + return 0, err + } + if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +func gasCallCode(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + memoryGas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + var ( + gas uint64 + overflow bool + ) + if stack.Back(2).Sign() != 0 { + gas += params.CallValueTransferGas + } + if gas, overflow = math.SafeAdd(gas, memoryGas); overflow { + return 0, ErrGasUintOverflow + } + evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0)) + if err != nil { + return 0, err + } + if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +func gasDelegateCall(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + gas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0)) + if err != nil { + return 0, err + } + var overflow bool + if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +func gasStaticCall(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + gas, err := memoryGasCost(mem, memorySize) + if err != nil { + return 0, err + } + evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0)) + if err != nil { + return 0, err + } + var overflow bool + if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil +} + +func gasSelfdestruct(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + var gas uint64 + // EIP150 homestead gas reprice fork: + if evm.chainRules.IsEIP150 { + gas = params.SelfdestructGasEIP150 + address := common.Address(stack.Back(0).Bytes20()) + + if evm.chainRules.IsEIP158 { + // if empty and transfers value + if evm.StateDB.Empty(address) && evm.StateDB.GetBalance(contract.Address()).Sign() != 0 { + gas += params.CreateBySelfdestructGas + } + } else if !evm.StateDB.Exist(address) { + gas += params.CreateBySelfdestructGas + } + } + + if !evm.StateDB.HasSuicided(contract.Address()) { + evm.StateDB.AddRefund(params.SelfdestructRefundGas) + } + return gas, nil +} diff --git a/core/vm/gas_table_test.go b/core/vm/gas_table_test.go new file mode 100644 index 0000000000..fb21e474ee --- /dev/null +++ b/core/vm/gas_table_test.go @@ -0,0 +1,117 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "math" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +func TestMemoryGasCost(t *testing.T) { + tests := []struct { + size uint64 + cost uint64 + overflow bool + }{ + {0x1fffffffe0, 36028809887088637, false}, + {0x1fffffffe1, 0, true}, + } + for i, tt := range tests { + v, err := memoryGasCost(&Memory{}, tt.size) + if (err == ErrGasUintOverflow) != tt.overflow { + t.Errorf("test %d: overflow mismatch: have %v, want %v", i, err == ErrGasUintOverflow, tt.overflow) + } + if v != tt.cost { + t.Errorf("test %d: gas cost mismatch: have %v, want %v", i, v, tt.cost) + } + } +} + +var eip2200Tests = []struct { + original byte + gaspool uint64 + input string + used uint64 + refund uint64 + failure error +}{ + {0, math.MaxUint64, "0x60006000556000600055", 1612, 0, nil}, // 0 -> 0 -> 0 + {0, math.MaxUint64, "0x60006000556001600055", 20812, 0, nil}, // 0 -> 0 -> 1 + {0, math.MaxUint64, "0x60016000556000600055", 20812, 19200, nil}, // 0 -> 1 -> 0 + {0, math.MaxUint64, "0x60016000556002600055", 20812, 0, nil}, // 0 -> 1 -> 2 + {0, math.MaxUint64, "0x60016000556001600055", 20812, 0, nil}, // 0 -> 1 -> 1 + {1, math.MaxUint64, "0x60006000556000600055", 5812, 15000, nil}, // 1 -> 0 -> 0 + {1, math.MaxUint64, "0x60006000556001600055", 5812, 4200, nil}, // 1 -> 0 -> 1 + {1, math.MaxUint64, "0x60006000556002600055", 5812, 0, nil}, // 1 -> 0 -> 2 + {1, math.MaxUint64, "0x60026000556000600055", 5812, 15000, nil}, // 1 -> 2 -> 0 + {1, math.MaxUint64, "0x60026000556003600055", 5812, 0, nil}, // 1 -> 2 -> 3 + {1, math.MaxUint64, "0x60026000556001600055", 5812, 4200, nil}, // 1 -> 2 -> 1 + {1, math.MaxUint64, "0x60026000556002600055", 5812, 0, nil}, // 1 -> 2 -> 2 + {1, math.MaxUint64, "0x60016000556000600055", 5812, 15000, nil}, // 1 -> 1 -> 0 + {1, math.MaxUint64, "0x60016000556002600055", 5812, 0, nil}, // 1 -> 1 -> 2 + {1, math.MaxUint64, "0x60016000556001600055", 1612, 0, nil}, // 1 -> 1 -> 1 + {0, math.MaxUint64, "0x600160005560006000556001600055", 40818, 19200, nil}, // 0 -> 1 -> 0 -> 1 + {1, math.MaxUint64, "0x600060005560016000556000600055", 10818, 19200, nil}, // 1 -> 0 -> 1 -> 0 + {1, 2306, "0x6001600055", 2306, 0, ErrOutOfGas}, // 1 -> 1 (2300 sentry + 2xPUSH) + {1, 2307, "0x6001600055", 806, 0, nil}, // 1 -> 1 (2301 sentry + 2xPUSH) +} + +func TestEIP2200(t *testing.T) { + for i, tt := range eip2200Tests { + address := common.BytesToAddress([]byte("contract")) + + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + statedb.CreateAccount(address) + statedb.SetCode(address, hexutil.MustDecode(tt.input)) + statedb.SetState(address, common.Hash{}, common.BytesToHash([]byte{tt.original})) + statedb.Finalise(true) // Push the state into the "original" slot + + vmctx := BlockContext{ + CanTransfer: func(StateDB, common.Address, *big.Int) bool { return true }, + Transfer: func(StateDB, common.Address, common.Address, *big.Int) {}, + } + vmenv := NewEVM(vmctx, TxContext{}, statedb, params.TestChainConfig, Config{ExtraEips: []int{2200}}) + + _, gas, err := vmenv.Call(AccountRef(common.Address{}), address, nil, tt.gaspool, new(big.Int)) + if err != tt.failure { + t.Errorf("test %d: failure mismatch: have %v, want %v", i, err, tt.failure) + } + if used := tt.gaspool - gas; used != tt.used { + t.Errorf("test %d: gas used mismatch: have %v, want %v", i, used, tt.used) + } + if refund := vmenv.StateDB.GetRefund(); refund != tt.refund { + t.Errorf("test %d: gas refund mismatch: have %v, want %v", i, refund, tt.refund) + } + } +} diff --git a/core/vm/gen_structlog.go b/core/vm/gen_structlog.go new file mode 100644 index 0000000000..365f3b7914 --- /dev/null +++ b/core/vm/gen_structlog.go @@ -0,0 +1,109 @@ +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. + +package vm + +import ( + "encoding/json" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/holiman/uint256" +) + +var _ = (*structLogMarshaling)(nil) + +// MarshalJSON marshals as JSON. +func (s StructLog) MarshalJSON() ([]byte, error) { + type StructLog struct { + Pc uint64 `json:"pc"` + Op OpCode `json:"op"` + Gas math.HexOrDecimal64 `json:"gas"` + GasCost math.HexOrDecimal64 `json:"gasCost"` + Memory hexutil.Bytes `json:"memory"` + MemorySize int `json:"memSize"` + Stack []uint256.Int `json:"stack"` + ReturnData hexutil.Bytes `json:"returnData"` + Storage map[common.Hash]common.Hash `json:"-"` + Depth int `json:"depth"` + RefundCounter uint64 `json:"refund"` + Err error `json:"-"` + OpName string `json:"opName"` + ErrorString string `json:"error"` + } + var enc StructLog + enc.Pc = s.Pc + enc.Op = s.Op + enc.Gas = math.HexOrDecimal64(s.Gas) + enc.GasCost = math.HexOrDecimal64(s.GasCost) + enc.Memory = s.Memory + enc.MemorySize = s.MemorySize + enc.Stack = s.Stack + enc.ReturnData = s.ReturnData + enc.Storage = s.Storage + enc.Depth = s.Depth + enc.RefundCounter = s.RefundCounter + enc.Err = s.Err + enc.OpName = s.OpName() + enc.ErrorString = s.ErrorString() + return json.Marshal(&enc) +} + +// UnmarshalJSON unmarshals from JSON. +func (s *StructLog) UnmarshalJSON(input []byte) error { + type StructLog struct { + Pc *uint64 `json:"pc"` + Op *OpCode `json:"op"` + Gas *math.HexOrDecimal64 `json:"gas"` + GasCost *math.HexOrDecimal64 `json:"gasCost"` + Memory *hexutil.Bytes `json:"memory"` + MemorySize *int `json:"memSize"` + Stack []uint256.Int `json:"stack"` + ReturnData *hexutil.Bytes `json:"returnData"` + Storage map[common.Hash]common.Hash `json:"-"` + Depth *int `json:"depth"` + RefundCounter *uint64 `json:"refund"` + Err error `json:"-"` + } + var dec StructLog + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + if dec.Pc != nil { + s.Pc = *dec.Pc + } + if dec.Op != nil { + s.Op = *dec.Op + } + if dec.Gas != nil { + s.Gas = uint64(*dec.Gas) + } + if dec.GasCost != nil { + s.GasCost = uint64(*dec.GasCost) + } + if dec.Memory != nil { + s.Memory = *dec.Memory + } + if dec.MemorySize != nil { + s.MemorySize = *dec.MemorySize + } + if dec.Stack != nil { + s.Stack = dec.Stack + } + if dec.ReturnData != nil { + s.ReturnData = *dec.ReturnData + } + if dec.Storage != nil { + s.Storage = dec.Storage + } + if dec.Depth != nil { + s.Depth = *dec.Depth + } + if dec.RefundCounter != nil { + s.RefundCounter = *dec.RefundCounter + } + if dec.Err != nil { + s.Err = dec.Err + } + return nil +} diff --git a/core/vm/instructions.go b/core/vm/instructions.go new file mode 100644 index 0000000000..29ea54daed --- /dev/null +++ b/core/vm/instructions.go @@ -0,0 +1,895 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/holiman/uint256" + "golang.org/x/crypto/sha3" +) + +func opAdd(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.Add(&x, y) + return nil, nil +} + +func opSub(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.Sub(&x, y) + return nil, nil +} + +func opMul(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.Mul(&x, y) + return nil, nil +} + +func opDiv(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.Div(&x, y) + return nil, nil +} + +func opSdiv(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.SDiv(&x, y) + return nil, nil +} + +func opMod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.Mod(&x, y) + return nil, nil +} + +func opSmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.SMod(&x, y) + return nil, nil +} + +func opExp(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + base, exponent := scope.Stack.pop(), scope.Stack.peek() + exponent.Exp(&base, exponent) + return nil, nil +} + +func opSignExtend(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + back, num := scope.Stack.pop(), scope.Stack.peek() + num.ExtendSign(num, &back) + return nil, nil +} + +func opNot(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x := scope.Stack.peek() + x.Not(x) + return nil, nil +} + +func opLt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + if x.Lt(y) { + y.SetOne() + } else { + y.Clear() + } + return nil, nil +} + +func opGt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + if x.Gt(y) { + y.SetOne() + } else { + y.Clear() + } + return nil, nil +} + +func opSlt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + if x.Slt(y) { + y.SetOne() + } else { + y.Clear() + } + return nil, nil +} + +func opSgt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + if x.Sgt(y) { + y.SetOne() + } else { + y.Clear() + } + return nil, nil +} + +func opEq(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + if x.Eq(y) { + y.SetOne() + } else { + y.Clear() + } + return nil, nil +} + +func opIszero(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x := scope.Stack.peek() + if x.IsZero() { + x.SetOne() + } else { + x.Clear() + } + return nil, nil +} + +func opAnd(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.And(&x, y) + return nil, nil +} + +func opOr(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.Or(&x, y) + return nil, nil +} + +func opXor(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y := scope.Stack.pop(), scope.Stack.peek() + y.Xor(&x, y) + return nil, nil +} + +func opByte(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + th, val := scope.Stack.pop(), scope.Stack.peek() + val.Byte(&th) + return nil, nil +} + +func opAddmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y, z := scope.Stack.pop(), scope.Stack.pop(), scope.Stack.peek() + if z.IsZero() { + z.Clear() + } else { + z.AddMod(&x, &y, z) + } + return nil, nil +} + +func opMulmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x, y, z := scope.Stack.pop(), scope.Stack.pop(), scope.Stack.peek() + z.MulMod(&x, &y, z) + return nil, nil +} + +// opSHL implements Shift Left +// The SHL instruction (shift left) pops 2 values from the stack, first arg1 and then arg2, +// and pushes on the stack arg2 shifted to the left by arg1 number of bits. +func opSHL(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + // Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards + shift, value := scope.Stack.pop(), scope.Stack.peek() + if shift.LtUint64(256) { + value.Lsh(value, uint(shift.Uint64())) + } else { + value.Clear() + } + return nil, nil +} + +// opSHR implements Logical Shift Right +// The SHR instruction (logical shift right) pops 2 values from the stack, first arg1 and then arg2, +// and pushes on the stack arg2 shifted to the right by arg1 number of bits with zero fill. +func opSHR(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + // Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards + shift, value := scope.Stack.pop(), scope.Stack.peek() + if shift.LtUint64(256) { + value.Rsh(value, uint(shift.Uint64())) + } else { + value.Clear() + } + return nil, nil +} + +// opSAR implements Arithmetic Shift Right +// The SAR instruction (arithmetic shift right) pops 2 values from the stack, first arg1 and then arg2, +// and pushes on the stack arg2 shifted to the right by arg1 number of bits with sign extension. +func opSAR(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + shift, value := scope.Stack.pop(), scope.Stack.peek() + if shift.GtUint64(256) { + if value.Sign() >= 0 { + value.Clear() + } else { + // Max negative shift: all bits set + value.SetAllOne() + } + return nil, nil + } + n := uint(shift.Uint64()) + value.SRsh(value, n) + return nil, nil +} + +func opSha3(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + offset, size := scope.Stack.pop(), scope.Stack.peek() + data := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64())) + + if interpreter.hasher == nil { + interpreter.hasher = sha3.NewLegacyKeccak256().(keccakState) + } else { + interpreter.hasher.Reset() + } + interpreter.hasher.Write(data) + interpreter.hasher.Read(interpreter.hasherBuf[:]) + + evm := interpreter.evm + if evm.Config.EnablePreimageRecording { + evm.StateDB.AddPreimage(interpreter.hasherBuf, data) + } + + size.SetBytes(interpreter.hasherBuf[:]) + return nil, nil +} + +func opAddress(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Address().Bytes())) + return nil, nil +} + +func opBalance(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + slot := scope.Stack.peek() + address := common.Address(slot.Bytes20()) + slot.SetFromBig(interpreter.evm.StateDB.GetBalance(address)) + return nil, nil +} + +func opOrigin(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetBytes(interpreter.evm.Origin.Bytes())) + return nil, nil +} + +func opCaller(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Caller().Bytes())) + return nil, nil +} + +func opCallValue(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + v, _ := uint256.FromBig(scope.Contract.value) + scope.Stack.push(v) + return nil, nil +} + +func opCallDataLoad(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + x := scope.Stack.peek() + if offset, overflow := x.Uint64WithOverflow(); !overflow { + data := getData(scope.Contract.Input, offset, 32) + x.SetBytes(data) + } else { + x.Clear() + } + return nil, nil +} + +func opCallDataSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetUint64(uint64(len(scope.Contract.Input)))) + return nil, nil +} + +func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + var ( + memOffset = scope.Stack.pop() + dataOffset = scope.Stack.pop() + length = scope.Stack.pop() + ) + dataOffset64, overflow := dataOffset.Uint64WithOverflow() + if overflow { + dataOffset64 = 0xffffffffffffffff + } + // These values are checked for overflow during gas cost calculation + memOffset64 := memOffset.Uint64() + length64 := length.Uint64() + scope.Memory.Set(memOffset64, length64, getData(scope.Contract.Input, dataOffset64, length64)) + + return nil, nil +} + +func opReturnDataSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetUint64(uint64(len(interpreter.returnData)))) + return nil, nil +} + +func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + var ( + memOffset = scope.Stack.pop() + dataOffset = scope.Stack.pop() + length = scope.Stack.pop() + ) + + offset64, overflow := dataOffset.Uint64WithOverflow() + if overflow { + return nil, ErrReturnDataOutOfBounds + } + // we can reuse dataOffset now (aliasing it for clarity) + end := dataOffset + end.Add(&dataOffset, &length) + end64, overflow := end.Uint64WithOverflow() + if overflow || uint64(len(interpreter.returnData)) < end64 { + return nil, ErrReturnDataOutOfBounds + } + scope.Memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[offset64:end64]) + return nil, nil +} + +func opExtCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + slot := scope.Stack.peek() + slot.SetUint64(uint64(interpreter.evm.StateDB.GetCodeSize(slot.Bytes20()))) + return nil, nil +} + +func opCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + l := new(uint256.Int) + l.SetUint64(uint64(len(scope.Contract.Code))) + scope.Stack.push(l) + return nil, nil +} + +func opCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + var ( + memOffset = scope.Stack.pop() + codeOffset = scope.Stack.pop() + length = scope.Stack.pop() + ) + uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow() + if overflow { + uint64CodeOffset = 0xffffffffffffffff + } + codeCopy := getData(scope.Contract.Code, uint64CodeOffset, length.Uint64()) + scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy) + + return nil, nil +} + +func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + var ( + stack = scope.Stack + a = stack.pop() + memOffset = stack.pop() + codeOffset = stack.pop() + length = stack.pop() + ) + uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow() + if overflow { + uint64CodeOffset = 0xffffffffffffffff + } + addr := common.Address(a.Bytes20()) + codeCopy := getData(interpreter.evm.StateDB.GetCode(addr), uint64CodeOffset, length.Uint64()) + scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy) + + return nil, nil +} + +// opExtCodeHash returns the code hash of a specified account. +// There are several cases when the function is called, while we can relay everything +// to `state.GetCodeHash` function to ensure the correctness. +// (1) Caller tries to get the code hash of a normal contract account, state +// should return the relative code hash and set it as the result. +// +// (2) Caller tries to get the code hash of a non-existent account, state should +// return common.Hash{} and zero will be set as the result. +// +// (3) Caller tries to get the code hash for an account without contract code, +// state should return emptyCodeHash(0xc5d246...) as the result. +// +// (4) Caller tries to get the code hash of a precompiled account, the result +// should be zero or emptyCodeHash. +// +// It is worth noting that in order to avoid unnecessary create and clean, +// all precompile accounts on mainnet have been transferred 1 wei, so the return +// here should be emptyCodeHash. +// If the precompile account is not transferred any amount on a private or +// customized chain, the return value will be zero. +// +// (5) Caller tries to get the code hash for an account which is marked as suicided +// in the current transaction, the code hash of this account should be returned. +// +// (6) Caller tries to get the code hash for an account which is marked as deleted, +// this account should be regarded as a non-existent account and zero should be returned. +func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + slot := scope.Stack.peek() + address := common.Address(slot.Bytes20()) + if interpreter.evm.StateDB.Empty(address) { + slot.Clear() + } else { + slot.SetBytes(interpreter.evm.StateDB.GetCodeHash(address).Bytes()) + } + return nil, nil +} + +func opGasprice(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + v, _ := uint256.FromBig(interpreter.evm.GasPrice) + scope.Stack.push(v) + return nil, nil +} + +func opBlockhash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + num := scope.Stack.peek() + num64, overflow := num.Uint64WithOverflow() + if overflow { + num.Clear() + return nil, nil + } + var upper, lower uint64 + upper = interpreter.evm.Context.BlockNumber.Uint64() + if upper < 257 { + lower = 0 + } else { + lower = upper - 256 + } + if num64 >= lower && num64 < upper { + num.SetBytes(interpreter.evm.Context.GetHash(num64).Bytes()) + } else { + num.Clear() + } + return nil, nil +} + +func opCoinbase(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetBytes(interpreter.evm.Context.Coinbase.Bytes())) + return nil, nil +} + +func opTimestamp(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + v, _ := uint256.FromBig(interpreter.evm.Context.Time) + scope.Stack.push(v) + return nil, nil +} + +func opNumber(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + v, _ := uint256.FromBig(interpreter.evm.Context.BlockNumber) + scope.Stack.push(v) + return nil, nil +} + +func opDifficulty(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + v, _ := uint256.FromBig(interpreter.evm.Context.Difficulty) + scope.Stack.push(v) + return nil, nil +} + +func opGasLimit(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetUint64(interpreter.evm.Context.GasLimit)) + return nil, nil +} + +func opPop(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.pop() + return nil, nil +} + +func opMload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + v := scope.Stack.peek() + offset := int64(v.Uint64()) + v.SetBytes(scope.Memory.GetPtr(offset, 32)) + return nil, nil +} + +func opMstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + // pop value of the stack + mStart, val := scope.Stack.pop(), scope.Stack.pop() + scope.Memory.Set32(mStart.Uint64(), &val) + return nil, nil +} + +func opMstore8(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + off, val := scope.Stack.pop(), scope.Stack.pop() + scope.Memory.store[off.Uint64()] = byte(val.Uint64()) + return nil, nil +} + +func opSload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + loc := scope.Stack.peek() + hash := common.Hash(loc.Bytes32()) + val := interpreter.evm.StateDB.GetState(scope.Contract.Address(), hash) + loc.SetBytes(val.Bytes()) + return nil, nil +} + +func opSstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + loc := scope.Stack.pop() + val := scope.Stack.pop() + interpreter.evm.StateDB.SetState(scope.Contract.Address(), + loc.Bytes32(), val.Bytes32()) + return nil, nil +} + +func opJump(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + pos := scope.Stack.pop() + if !scope.Contract.validJumpdest(&pos) { + return nil, ErrInvalidJump + } + *pc = pos.Uint64() + return nil, nil +} + +func opJumpi(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + pos, cond := scope.Stack.pop(), scope.Stack.pop() + if !cond.IsZero() { + if !scope.Contract.validJumpdest(&pos) { + return nil, ErrInvalidJump + } + *pc = pos.Uint64() + } else { + *pc++ + } + return nil, nil +} + +func opJumpdest(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + return nil, nil +} + +func opPc(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetUint64(*pc)) + return nil, nil +} + +func opMsize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetUint64(uint64(scope.Memory.Len()))) + return nil, nil +} + +func opGas(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.push(new(uint256.Int).SetUint64(scope.Contract.Gas)) + return nil, nil +} + +func opCreate(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + var ( + value = scope.Stack.pop() + offset, size = scope.Stack.pop(), scope.Stack.pop() + input = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64())) + gas = scope.Contract.Gas + ) + if interpreter.evm.chainRules.IsEIP150 { + gas -= gas / 64 + } + // reuse size int for stackvalue + stackvalue := size + + scope.Contract.UseGas(gas) + // TODO: use uint256.Int instead of converting with toBig() + bigVal := big0 + if !value.IsZero() { + bigVal = value.ToBig() + } + + res, addr, returnGas, suberr := interpreter.evm.Create(scope.Contract, input, gas, bigVal) + // Push item on the stack based on the returned error. If the ruleset is + // homestead we must check for CodeStoreOutOfGasError (homestead only + // rule) and treat as an error, if the ruleset is frontier we must + // ignore this error and pretend the operation was successful. + if interpreter.evm.chainRules.IsHomestead && suberr == ErrCodeStoreOutOfGas { + stackvalue.Clear() + } else if suberr != nil && suberr != ErrCodeStoreOutOfGas { + stackvalue.Clear() + } else { + stackvalue.SetBytes(addr.Bytes()) + } + scope.Stack.push(&stackvalue) + scope.Contract.Gas += returnGas + + if suberr == ErrExecutionReverted { + return res, nil + } + return nil, nil +} + +func opCreate2(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + var ( + endowment = scope.Stack.pop() + offset, size = scope.Stack.pop(), scope.Stack.pop() + salt = scope.Stack.pop() + input = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64())) + gas = scope.Contract.Gas + ) + + // Apply EIP150 + gas -= gas / 64 + scope.Contract.UseGas(gas) + // reuse size int for stackvalue + stackvalue := size + // TODO: use uint256.Int instead of converting with toBig() + bigEndowment := big0 + if !endowment.IsZero() { + bigEndowment = endowment.ToBig() + } + res, addr, returnGas, suberr := interpreter.evm.Create2(scope.Contract, input, gas, + bigEndowment, &salt) + // Push item on the stack based on the returned error. + if suberr != nil { + stackvalue.Clear() + } else { + stackvalue.SetBytes(addr.Bytes()) + } + scope.Stack.push(&stackvalue) + scope.Contract.Gas += returnGas + + if suberr == ErrExecutionReverted { + return res, nil + } + return nil, nil +} + +func opCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + stack := scope.Stack + // Pop gas. The actual gas in interpreter.evm.callGasTemp. + // We can use this as a temporary value + temp := stack.pop() + gas := interpreter.evm.callGasTemp + // Pop other call parameters. + addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() + toAddr := common.Address(addr.Bytes20()) + // Get the arguments from the memory. + args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64())) + + bigVal := big0 + // TODO: use uint256.Int instead of converting with toBig() + // By using big0 here, we save an alloc for the most common case (non-ether-transferring contract calls), + // but it would make more sense to extend the usage of uint256.Int + if !value.IsZero() { + gas += params.CallStipend + bigVal = value.ToBig() + } + + ret, returnGas, err := interpreter.evm.Call(scope.Contract, toAddr, args, gas, bigVal) + + if err != nil { + temp.Clear() + } else { + temp.SetOne() + } + stack.push(&temp) + if err == nil || err == ErrExecutionReverted { + ret = common.CopyBytes(ret) + scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) + } + scope.Contract.Gas += returnGas + + return ret, nil +} + +func opCallCode(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + // Pop gas. The actual gas is in interpreter.evm.callGasTemp. + stack := scope.Stack + // We use it as a temporary value + temp := stack.pop() + gas := interpreter.evm.callGasTemp + // Pop other call parameters. + addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() + toAddr := common.Address(addr.Bytes20()) + // Get arguments from the memory. + args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64())) + + // TODO: use uint256.Int instead of converting with toBig() + bigVal := big0 + if !value.IsZero() { + gas += params.CallStipend + bigVal = value.ToBig() + } + + ret, returnGas, err := interpreter.evm.CallCode(scope.Contract, toAddr, args, gas, bigVal) + if err != nil { + temp.Clear() + } else { + temp.SetOne() + } + stack.push(&temp) + if err == nil || err == ErrExecutionReverted { + ret = common.CopyBytes(ret) + scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) + } + scope.Contract.Gas += returnGas + + return ret, nil +} + +func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + stack := scope.Stack + // Pop gas. The actual gas is in interpreter.evm.callGasTemp. + // We use it as a temporary value + temp := stack.pop() + gas := interpreter.evm.callGasTemp + // Pop other call parameters. + addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() + toAddr := common.Address(addr.Bytes20()) + // Get arguments from the memory. + args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64())) + + ret, returnGas, err := interpreter.evm.DelegateCall(scope.Contract, toAddr, args, gas) + if err != nil { + temp.Clear() + } else { + temp.SetOne() + } + stack.push(&temp) + if err == nil || err == ErrExecutionReverted { + ret = common.CopyBytes(ret) + scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) + } + scope.Contract.Gas += returnGas + + return ret, nil +} + +func opStaticCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + // Pop gas. The actual gas is in interpreter.evm.callGasTemp. + stack := scope.Stack + // We use it as a temporary value + temp := stack.pop() + gas := interpreter.evm.callGasTemp + // Pop other call parameters. + addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() + toAddr := common.Address(addr.Bytes20()) + // Get arguments from the memory. + args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64())) + + ret, returnGas, err := interpreter.evm.StaticCall(scope.Contract, toAddr, args, gas) + if err != nil { + temp.Clear() + } else { + temp.SetOne() + } + stack.push(&temp) + if err == nil || err == ErrExecutionReverted { + ret = common.CopyBytes(ret) + scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) + } + scope.Contract.Gas += returnGas + + return ret, nil +} + +func opReturn(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + offset, size := scope.Stack.pop(), scope.Stack.pop() + ret := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64())) + + return ret, nil +} + +func opRevert(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + offset, size := scope.Stack.pop(), scope.Stack.pop() + ret := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64())) + + return ret, nil +} + +func opStop(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + return nil, nil +} + +func opSuicide(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + beneficiary := scope.Stack.pop() + balance := interpreter.evm.StateDB.GetBalance(scope.Contract.Address()) + interpreter.evm.StateDB.AddBalance(beneficiary.Bytes20(), balance) + interpreter.evm.StateDB.Suicide(scope.Contract.Address()) + if interpreter.cfg.Debug { + interpreter.cfg.Tracer.CaptureEnter(SELFDESTRUCT, scope.Contract.Address(), beneficiary.Bytes20(), []byte{}, 0, balance) + interpreter.cfg.Tracer.CaptureExit([]byte{}, 0, nil) + } + return nil, nil +} + +// following functions are used by the instruction jump table + +// make log instruction function +func makeLog(size int) executionFunc { + return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + topics := make([]common.Hash, size) + stack := scope.Stack + mStart, mSize := stack.pop(), stack.pop() + for i := 0; i < size; i++ { + addr := stack.pop() + topics[i] = addr.Bytes32() + } + + d := scope.Memory.GetCopy(int64(mStart.Uint64()), int64(mSize.Uint64())) + interpreter.evm.StateDB.AddLog(&types.Log{ + Address: scope.Contract.Address(), + Topics: topics, + Data: d, + // This is a non-consensus field, but assigned here because + // core/state doesn't know the current block number. + BlockNumber: interpreter.evm.Context.BlockNumber.Uint64(), + }) + + return nil, nil + } +} + +// opPush1 is a specialized version of pushN +func opPush1(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + var ( + codeLen = uint64(len(scope.Contract.Code)) + integer = new(uint256.Int) + ) + *pc += 1 + if *pc < codeLen { + scope.Stack.push(integer.SetUint64(uint64(scope.Contract.Code[*pc]))) + } else { + scope.Stack.push(integer.Clear()) + } + return nil, nil +} + +// make push instruction function +func makePush(size uint64, pushByteSize int) executionFunc { + return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + codeLen := len(scope.Contract.Code) + + startMin := codeLen + if int(*pc+1) < startMin { + startMin = int(*pc + 1) + } + + endMin := codeLen + if startMin+pushByteSize < endMin { + endMin = startMin + pushByteSize + } + + integer := new(uint256.Int) + scope.Stack.push(integer.SetBytes(common.RightPadBytes( + scope.Contract.Code[startMin:endMin], pushByteSize))) + + *pc += size + return nil, nil + } +} + +// make dup instruction function +func makeDup(size int64) executionFunc { + return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.dup(int(size)) + return nil, nil + } +} + +// make swap instruction function +func makeSwap(size int64) executionFunc { + // switch n + 1 otherwise n would be swapped with n + size++ + return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) { + scope.Stack.swap(int(size)) + return nil, nil + } +} diff --git a/core/vm/instructions_test.go b/core/vm/instructions_test.go new file mode 100644 index 0000000000..b80351b522 --- /dev/null +++ b/core/vm/instructions_test.go @@ -0,0 +1,668 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "bytes" + "encoding/json" + "fmt" + "io/ioutil" + "testing" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/holiman/uint256" +) + +type TwoOperandTestcase struct { + X string + Y string + Expected string +} + +type twoOperandParams struct { + x string + y string +} + +var ( + alphabetSoup = "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff" + commonParams []*twoOperandParams + twoOpMethods map[string]executionFunc +) + +func init() { + // Params is a list of common edgecases that should be used for some common tests + params := []string{ + "0000000000000000000000000000000000000000000000000000000000000000", // 0 + "0000000000000000000000000000000000000000000000000000000000000001", // +1 + "0000000000000000000000000000000000000000000000000000000000000005", // +5 + "7ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe", // + max -1 + "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // + max + "8000000000000000000000000000000000000000000000000000000000000000", // - max + "8000000000000000000000000000000000000000000000000000000000000001", // - max+1 + "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffb", // - 5 + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // - 1 + } + // Params are combined so each param is used on each 'side' + commonParams = make([]*twoOperandParams, len(params)*len(params)) + for i, x := range params { + for j, y := range params { + commonParams[i*len(params)+j] = &twoOperandParams{x, y} + } + } + twoOpMethods = map[string]executionFunc{ + "add": opAdd, + "sub": opSub, + "mul": opMul, + "div": opDiv, + "sdiv": opSdiv, + "mod": opMod, + "smod": opSmod, + "exp": opExp, + "signext": opSignExtend, + "lt": opLt, + "gt": opGt, + "slt": opSlt, + "sgt": opSgt, + "eq": opEq, + "and": opAnd, + "or": opOr, + "xor": opXor, + "byte": opByte, + "shl": opSHL, + "shr": opSHR, + "sar": opSAR, + } +} + +func testTwoOperandOp(t *testing.T, tests []TwoOperandTestcase, opFn executionFunc, name string) { + var ( + env = NewEVM(BlockContext{}, TxContext{}, nil, params.TestChainConfig, Config{}) + stack = newstack() + pc = uint64(0) + evmInterpreter = env.interpreter + ) + + for i, test := range tests { + x := new(uint256.Int).SetBytes(common.Hex2Bytes(test.X)) + y := new(uint256.Int).SetBytes(common.Hex2Bytes(test.Y)) + expected := new(uint256.Int).SetBytes(common.Hex2Bytes(test.Expected)) + stack.push(x) + stack.push(y) + opFn(&pc, evmInterpreter, &ScopeContext{nil, stack, nil}) + if len(stack.data) != 1 { + t.Errorf("Expected one item on stack after %v, got %d: ", name, len(stack.data)) + } + actual := stack.pop() + + if actual.Cmp(expected) != 0 { + t.Errorf("Testcase %v %d, %v(%x, %x): expected %x, got %x", name, i, name, x, y, expected, actual) + } + } +} + +func TestByteOp(t *testing.T) { + tests := []TwoOperandTestcase{ + {"ABCDEF0908070605040302010000000000000000000000000000000000000000", "00", "AB"}, + {"ABCDEF0908070605040302010000000000000000000000000000000000000000", "01", "CD"}, + {"00CDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff", "00", "00"}, + {"00CDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff", "01", "CD"}, + {"0000000000000000000000000000000000000000000000000000000000102030", "1F", "30"}, + {"0000000000000000000000000000000000000000000000000000000000102030", "1E", "20"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "20", "00"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "FFFFFFFFFFFFFFFF", "00"}, + } + testTwoOperandOp(t, tests, opByte, "byte") +} + +func TestSHL(t *testing.T) { + // Testcases from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-145.md#shl-shift-left + tests := []TwoOperandTestcase{ + {"0000000000000000000000000000000000000000000000000000000000000001", "01", "0000000000000000000000000000000000000000000000000000000000000002"}, + {"0000000000000000000000000000000000000000000000000000000000000001", "ff", "8000000000000000000000000000000000000000000000000000000000000000"}, + {"0000000000000000000000000000000000000000000000000000000000000001", "0100", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"0000000000000000000000000000000000000000000000000000000000000001", "0101", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "00", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "01", "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "ff", "8000000000000000000000000000000000000000000000000000000000000000"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "0100", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"0000000000000000000000000000000000000000000000000000000000000000", "01", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "01", "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe"}, + } + testTwoOperandOp(t, tests, opSHL, "shl") +} + +func TestSHR(t *testing.T) { + // Testcases from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-145.md#shr-logical-shift-right + tests := []TwoOperandTestcase{ + {"0000000000000000000000000000000000000000000000000000000000000001", "00", "0000000000000000000000000000000000000000000000000000000000000001"}, + {"0000000000000000000000000000000000000000000000000000000000000001", "01", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "01", "4000000000000000000000000000000000000000000000000000000000000000"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "ff", "0000000000000000000000000000000000000000000000000000000000000001"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "0100", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "0101", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "00", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "01", "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "ff", "0000000000000000000000000000000000000000000000000000000000000001"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "0100", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"0000000000000000000000000000000000000000000000000000000000000000", "01", "0000000000000000000000000000000000000000000000000000000000000000"}, + } + testTwoOperandOp(t, tests, opSHR, "shr") +} + +func TestSAR(t *testing.T) { + // Testcases from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-145.md#sar-arithmetic-shift-right + tests := []TwoOperandTestcase{ + {"0000000000000000000000000000000000000000000000000000000000000001", "00", "0000000000000000000000000000000000000000000000000000000000000001"}, + {"0000000000000000000000000000000000000000000000000000000000000001", "01", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "01", "c000000000000000000000000000000000000000000000000000000000000000"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "ff", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "0100", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"8000000000000000000000000000000000000000000000000000000000000000", "0101", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "00", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "01", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "ff", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "0100", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}, + {"0000000000000000000000000000000000000000000000000000000000000000", "01", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"4000000000000000000000000000000000000000000000000000000000000000", "fe", "0000000000000000000000000000000000000000000000000000000000000001"}, + {"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "f8", "000000000000000000000000000000000000000000000000000000000000007f"}, + {"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "fe", "0000000000000000000000000000000000000000000000000000000000000001"}, + {"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "ff", "0000000000000000000000000000000000000000000000000000000000000000"}, + {"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "0100", "0000000000000000000000000000000000000000000000000000000000000000"}, + } + + testTwoOperandOp(t, tests, opSAR, "sar") +} + +func TestAddMod(t *testing.T) { + var ( + env = NewEVM(BlockContext{}, TxContext{}, nil, params.TestChainConfig, Config{}) + stack = newstack() + evmInterpreter = NewEVMInterpreter(env, env.Config) + pc = uint64(0) + ) + tests := []struct { + x string + y string + z string + expected string + }{ + { + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe", + "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe", + }, + } + // x + y = 0x1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffd + // in 256 bit repr, fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffd + + for i, test := range tests { + x := new(uint256.Int).SetBytes(common.Hex2Bytes(test.x)) + y := new(uint256.Int).SetBytes(common.Hex2Bytes(test.y)) + z := new(uint256.Int).SetBytes(common.Hex2Bytes(test.z)) + expected := new(uint256.Int).SetBytes(common.Hex2Bytes(test.expected)) + stack.push(z) + stack.push(y) + stack.push(x) + opAddmod(&pc, evmInterpreter, &ScopeContext{nil, stack, nil}) + actual := stack.pop() + if actual.Cmp(expected) != 0 { + t.Errorf("Testcase %d, expected %x, got %x", i, expected, actual) + } + } +} + +// getResult is a convenience function to generate the expected values +func getResult(args []*twoOperandParams, opFn executionFunc) []TwoOperandTestcase { + var ( + env = NewEVM(BlockContext{}, TxContext{}, nil, params.TestChainConfig, Config{}) + stack = newstack() + pc = uint64(0) + interpreter = env.interpreter + ) + result := make([]TwoOperandTestcase, len(args)) + for i, param := range args { + x := new(uint256.Int).SetBytes(common.Hex2Bytes(param.x)) + y := new(uint256.Int).SetBytes(common.Hex2Bytes(param.y)) + stack.push(x) + stack.push(y) + opFn(&pc, interpreter, &ScopeContext{nil, stack, nil}) + actual := stack.pop() + result[i] = TwoOperandTestcase{param.x, param.y, fmt.Sprintf("%064x", actual)} + } + return result +} + +// utility function to fill the json-file with testcases +// Enable this test to generate the 'testcases_xx.json' files +func TestWriteExpectedValues(t *testing.T) { + t.Skip("Enable this test to create json test cases.") + + for name, method := range twoOpMethods { + data, err := json.Marshal(getResult(commonParams, method)) + if err != nil { + t.Fatal(err) + } + _ = ioutil.WriteFile(fmt.Sprintf("testdata/testcases_%v.json", name), data, 0644) + if err != nil { + t.Fatal(err) + } + } +} + +// TestJsonTestcases runs through all the testcases defined as json-files +func TestJsonTestcases(t *testing.T) { + for name := range twoOpMethods { + data, err := ioutil.ReadFile(fmt.Sprintf("testdata/testcases_%v.json", name)) + if err != nil { + t.Fatal("Failed to read file", err) + } + var testcases []TwoOperandTestcase + json.Unmarshal(data, &testcases) + testTwoOperandOp(t, testcases, twoOpMethods[name], name) + } +} + +func opBenchmark(bench *testing.B, op executionFunc, args ...string) { + var ( + env = NewEVM(BlockContext{}, TxContext{}, nil, params.TestChainConfig, Config{}) + stack = newstack() + evmInterpreter = NewEVMInterpreter(env, env.Config) + ) + + env.interpreter = evmInterpreter + // convert args + byteArgs := make([][]byte, len(args)) + for i, arg := range args { + byteArgs[i] = common.Hex2Bytes(arg) + } + pc := uint64(0) + bench.ResetTimer() + for i := 0; i < bench.N; i++ { + for _, arg := range byteArgs { + a := new(uint256.Int) + a.SetBytes(arg) + stack.push(a) + } + op(&pc, evmInterpreter, &ScopeContext{nil, stack, nil}) + stack.pop() + } +} + +func BenchmarkOpAdd64(b *testing.B) { + x := "ffffffff" + y := "fd37f3e2bba2c4f" + + opBenchmark(b, opAdd, x, y) +} + +func BenchmarkOpAdd128(b *testing.B) { + x := "ffffffffffffffff" + y := "f5470b43c6549b016288e9a65629687" + + opBenchmark(b, opAdd, x, y) +} + +func BenchmarkOpAdd256(b *testing.B) { + x := "0802431afcbce1fc194c9eaa417b2fb67dc75a95db0bc7ec6b1c8af11df6a1da9" + y := "a1f5aac137876480252e5dcac62c354ec0d42b76b0642b6181ed099849ea1d57" + + opBenchmark(b, opAdd, x, y) +} + +func BenchmarkOpSub64(b *testing.B) { + x := "51022b6317003a9d" + y := "a20456c62e00753a" + + opBenchmark(b, opSub, x, y) +} + +func BenchmarkOpSub128(b *testing.B) { + x := "4dde30faaacdc14d00327aac314e915d" + y := "9bbc61f5559b829a0064f558629d22ba" + + opBenchmark(b, opSub, x, y) +} + +func BenchmarkOpSub256(b *testing.B) { + x := "4bfcd8bb2ac462735b48a17580690283980aa2d679f091c64364594df113ea37" + y := "97f9b1765588c4e6b69142eb00d20507301545acf3e1238c86c8b29be227d46e" + + opBenchmark(b, opSub, x, y) +} + +func BenchmarkOpMul(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opMul, x, y) +} + +func BenchmarkOpDiv256(b *testing.B) { + x := "ff3f9014f20db29ae04af2c2d265de17" + y := "fe7fb0d1f59dfe9492ffbf73683fd1e870eec79504c60144cc7f5fc2bad1e611" + opBenchmark(b, opDiv, x, y) +} + +func BenchmarkOpDiv128(b *testing.B) { + x := "fdedc7f10142ff97" + y := "fbdfda0e2ce356173d1993d5f70a2b11" + opBenchmark(b, opDiv, x, y) +} + +func BenchmarkOpDiv64(b *testing.B) { + x := "fcb34eb3" + y := "f97180878e839129" + opBenchmark(b, opDiv, x, y) +} + +func BenchmarkOpSdiv(b *testing.B) { + x := "ff3f9014f20db29ae04af2c2d265de17" + y := "fe7fb0d1f59dfe9492ffbf73683fd1e870eec79504c60144cc7f5fc2bad1e611" + + opBenchmark(b, opSdiv, x, y) +} + +func BenchmarkOpMod(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opMod, x, y) +} + +func BenchmarkOpSmod(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opSmod, x, y) +} + +func BenchmarkOpExp(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opExp, x, y) +} + +func BenchmarkOpSignExtend(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opSignExtend, x, y) +} + +func BenchmarkOpLt(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opLt, x, y) +} + +func BenchmarkOpGt(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opGt, x, y) +} + +func BenchmarkOpSlt(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opSlt, x, y) +} + +func BenchmarkOpSgt(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opSgt, x, y) +} + +func BenchmarkOpEq(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opEq, x, y) +} + +func BenchmarkOpEq2(b *testing.B) { + x := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201ffffffff" + y := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201fffffffe" + opBenchmark(b, opEq, x, y) +} + +func BenchmarkOpAnd(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opAnd, x, y) +} + +func BenchmarkOpOr(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opOr, x, y) +} + +func BenchmarkOpXor(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opXor, x, y) +} + +func BenchmarkOpByte(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + + opBenchmark(b, opByte, x, y) +} + +func BenchmarkOpAddmod(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + z := alphabetSoup + + opBenchmark(b, opAddmod, x, y, z) +} + +func BenchmarkOpMulmod(b *testing.B) { + x := alphabetSoup + y := alphabetSoup + z := alphabetSoup + + opBenchmark(b, opMulmod, x, y, z) +} + +func BenchmarkOpSHL(b *testing.B) { + x := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201ffffffff" + y := "ff" + + opBenchmark(b, opSHL, x, y) +} + +func BenchmarkOpSHR(b *testing.B) { + x := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201ffffffff" + y := "ff" + + opBenchmark(b, opSHR, x, y) +} + +func BenchmarkOpSAR(b *testing.B) { + x := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201ffffffff" + y := "ff" + + opBenchmark(b, opSAR, x, y) +} + +func BenchmarkOpIsZero(b *testing.B) { + x := "FBCDEF090807060504030201ffffffffFBCDEF090807060504030201ffffffff" + opBenchmark(b, opIszero, x) +} + +func TestOpMstore(t *testing.T) { + var ( + env = NewEVM(BlockContext{}, TxContext{}, nil, params.TestChainConfig, Config{}) + stack = newstack() + mem = NewMemory() + evmInterpreter = NewEVMInterpreter(env, env.Config) + ) + + env.interpreter = evmInterpreter + mem.Resize(64) + pc := uint64(0) + v := "abcdef00000000000000abba000000000deaf000000c0de00100000000133700" + stack.pushN(*new(uint256.Int).SetBytes(common.Hex2Bytes(v)), *new(uint256.Int)) + opMstore(&pc, evmInterpreter, &ScopeContext{mem, stack, nil}) + if got := common.Bytes2Hex(mem.GetCopy(0, 32)); got != v { + t.Fatalf("Mstore fail, got %v, expected %v", got, v) + } + stack.pushN(*new(uint256.Int).SetUint64(0x1), *new(uint256.Int)) + opMstore(&pc, evmInterpreter, &ScopeContext{mem, stack, nil}) + if common.Bytes2Hex(mem.GetCopy(0, 32)) != "0000000000000000000000000000000000000000000000000000000000000001" { + t.Fatalf("Mstore failed to overwrite previous value") + } +} + +func BenchmarkOpMstore(bench *testing.B) { + var ( + env = NewEVM(BlockContext{}, TxContext{}, nil, params.TestChainConfig, Config{}) + stack = newstack() + mem = NewMemory() + evmInterpreter = NewEVMInterpreter(env, env.Config) + ) + + env.interpreter = evmInterpreter + mem.Resize(64) + pc := uint64(0) + memStart := new(uint256.Int) + value := new(uint256.Int).SetUint64(0x1337) + + bench.ResetTimer() + for i := 0; i < bench.N; i++ { + stack.pushN(*value, *memStart) + opMstore(&pc, evmInterpreter, &ScopeContext{mem, stack, nil}) + } +} + +func BenchmarkOpSHA3(bench *testing.B) { + var ( + env = NewEVM(BlockContext{}, TxContext{}, nil, params.TestChainConfig, Config{}) + stack = newstack() + mem = NewMemory() + evmInterpreter = NewEVMInterpreter(env, env.Config) + ) + env.interpreter = evmInterpreter + mem.Resize(32) + pc := uint64(0) + start := new(uint256.Int) + + bench.ResetTimer() + for i := 0; i < bench.N; i++ { + stack.pushN(*uint256.NewInt(32), *start) + opSha3(&pc, evmInterpreter, &ScopeContext{mem, stack, nil}) + } +} + +func TestCreate2Addreses(t *testing.T) { + type testcase struct { + origin string + salt string + code string + expected string + } + + for i, tt := range []testcase{ + { + origin: "0x0000000000000000000000000000000000000000", + salt: "0x0000000000000000000000000000000000000000", + code: "0x00", + expected: "0x4d1a2e2bb4f88f0250f26ffff098b0b30b26bf38", + }, + { + origin: "0xdeadbeef00000000000000000000000000000000", + salt: "0x0000000000000000000000000000000000000000", + code: "0x00", + expected: "0xB928f69Bb1D91Cd65274e3c79d8986362984fDA3", + }, + { + origin: "0xdeadbeef00000000000000000000000000000000", + salt: "0xfeed000000000000000000000000000000000000", + code: "0x00", + expected: "0xD04116cDd17beBE565EB2422F2497E06cC1C9833", + }, + { + origin: "0x0000000000000000000000000000000000000000", + salt: "0x0000000000000000000000000000000000000000", + code: "0xdeadbeef", + expected: "0x70f2b2914A2a4b783FaEFb75f459A580616Fcb5e", + }, + { + origin: "0x00000000000000000000000000000000deadbeef", + salt: "0xcafebabe", + code: "0xdeadbeef", + expected: "0x60f3f640a8508fC6a86d45DF051962668E1e8AC7", + }, + { + origin: "0x00000000000000000000000000000000deadbeef", + salt: "0xcafebabe", + code: "0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef", + expected: "0x1d8bfDC5D46DC4f61D6b6115972536eBE6A8854C", + }, + { + origin: "0x0000000000000000000000000000000000000000", + salt: "0x0000000000000000000000000000000000000000", + code: "0x", + expected: "0xE33C0C7F7df4809055C3ebA6c09CFe4BaF1BD9e0", + }, + } { + + origin := common.BytesToAddress(common.FromHex(tt.origin)) + salt := common.BytesToHash(common.FromHex(tt.salt)) + code := common.FromHex(tt.code) + codeHash := crypto.Keccak256(code) + address := crypto.CreateAddress2(origin, salt, codeHash) + /* + stack := newstack() + // salt, but we don't need that for this test + stack.push(big.NewInt(int64(len(code)))) //size + stack.push(big.NewInt(0)) // memstart + stack.push(big.NewInt(0)) // value + gas, _ := gasCreate2(params.GasTable{}, nil, nil, stack, nil, 0) + fmt.Printf("Example %d\n* address `0x%x`\n* salt `0x%x`\n* init_code `0x%x`\n* gas (assuming no mem expansion): `%v`\n* result: `%s`\n\n", i,origin, salt, code, gas, address.String()) + */ + expected := common.BytesToAddress(common.FromHex(tt.expected)) + if !bytes.Equal(expected.Bytes(), address.Bytes()) { + t.Errorf("test %d: expected %s, got %s", i, expected.String(), address.String()) + } + } +} diff --git a/core/vm/interface.go b/core/vm/interface.go new file mode 100644 index 0000000000..7f5923dbe4 --- /dev/null +++ b/core/vm/interface.go @@ -0,0 +1,100 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// StateDB is an EVM database for full state querying. +type StateDB interface { + CreateAccount(common.Address) + + SubBalance(common.Address, *big.Int) + AddBalance(common.Address, *big.Int) + GetBalance(common.Address) *big.Int + + GetNonce(common.Address) uint64 + SetNonce(common.Address, uint64) + + GetCodeHash(common.Address) common.Hash + GetCode(common.Address) []byte + SetCode(common.Address, []byte) + GetCodeSize(common.Address) int + + AddRefund(uint64) + SubRefund(uint64) + GetRefund() uint64 + + GetCommittedState(common.Address, common.Hash) common.Hash + GetState(common.Address, common.Hash) common.Hash + SetState(common.Address, common.Hash, common.Hash) + + Suicide(common.Address) bool + HasSuicided(common.Address) bool + + // Exist reports whether the given account exists in state. + // Notably this should also return true for suicided accounts. + Exist(common.Address) bool + // Empty returns whether the given account is empty. Empty + // is defined according to EIP161 (balance = nonce = code = 0). + Empty(common.Address) bool + + PrepareAccessList(sender common.Address, dest *common.Address, precompiles []common.Address, txAccesses types.AccessList) + AddressInAccessList(addr common.Address) bool + SlotInAccessList(addr common.Address, slot common.Hash) (addressOk bool, slotOk bool) + // AddAddressToAccessList adds the given address to the access list. This operation is safe to perform + // even if the feature/fork is not active yet + AddAddressToAccessList(addr common.Address) + // AddSlotToAccessList adds the given (address,slot) to the access list. This operation is safe to perform + // even if the feature/fork is not active yet + AddSlotToAccessList(addr common.Address, slot common.Hash) + + RevertToSnapshot(int) + Snapshot() int + + AddLog(*types.Log) + AddPreimage(common.Hash, []byte) + + ForEachStorage(common.Address, func(common.Hash, common.Hash) bool) error +} + +// CallContext provides a basic interface for the EVM calling conventions. The EVM +// depends on this context being implemented for doing subcalls and initialising new EVM contracts. +type CallContext interface { + // Call another contract + Call(env *EVM, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) + // Take another's contract code and execute within our own context + CallCode(env *EVM, me ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) + // Same as CallCode except sender and value is propagated from parent to child scope + DelegateCall(env *EVM, me ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error) + // Create a new contract + Create(env *EVM, me ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error) +} diff --git a/core/vm/interpreter.go b/core/vm/interpreter.go new file mode 100644 index 0000000000..e79916b7e3 --- /dev/null +++ b/core/vm/interpreter.go @@ -0,0 +1,306 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "hash" + "sync/atomic" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/log" +) + +var BuiltinAddr = common.Address{ + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +} + +// Config are the configuration options for the Interpreter +type Config struct { + Debug bool // Enables debugging + Tracer EVMLogger // Opcode logger + NoRecursion bool // Disables call, callcode, delegate call and create + NoBaseFee bool // Forces the EIP-1559 baseFee to 0 (needed for 0 price calls) + EnablePreimageRecording bool // Enables recording of SHA3/keccak preimages + + JumpTable [256]*operation // EVM instruction table, automatically populated if unset + + ExtraEips []int // Additional EIPS that are to be enabled + + // AllowUnfinalizedQueries allow unfinalized queries + AllowUnfinalizedQueries bool +} + +// ScopeContext contains the things that are per-call, such as stack and memory, +// but not transients like pc and gas +type ScopeContext struct { + Memory *Memory + Stack *Stack + Contract *Contract +} + +// keccakState wraps sha3.state. In addition to the usual hash methods, it also supports +// Read to get a variable amount of data from the hash state. Read is faster than Sum +// because it doesn't copy the internal state, but also modifies the internal state. +type keccakState interface { + hash.Hash + Read([]byte) (int, error) +} + +// EVMInterpreter represents an EVM interpreter +type EVMInterpreter struct { + evm *EVM + cfg Config + + hasher keccakState // Keccak256 hasher instance shared across opcodes + hasherBuf common.Hash // Keccak256 hasher result array shared aross opcodes + + readOnly bool // Whether to throw on stateful modifications + returnData []byte // Last CALL's return data for subsequent reuse +} + +// NewEVMInterpreter returns a new instance of the Interpreter. +func NewEVMInterpreter(evm *EVM, cfg Config) *EVMInterpreter { + // We use the STOP instruction whether to see + // the jump table was initialised. If it was not + // we'll set the default jump table. + if cfg.JumpTable[STOP] == nil { + var jt JumpTable + switch { + case evm.chainRules.IsSubnetEVM: + jt = subnetEVMInstructionSet + case evm.chainRules.IsIstanbul: + jt = istanbulInstructionSet + case evm.chainRules.IsConstantinople: + jt = constantinopleInstructionSet + case evm.chainRules.IsByzantium: + jt = byzantiumInstructionSet + case evm.chainRules.IsEIP158: + jt = spuriousDragonInstructionSet + case evm.chainRules.IsEIP150: + jt = tangerineWhistleInstructionSet + case evm.chainRules.IsHomestead: + jt = homesteadInstructionSet + default: + jt = frontierInstructionSet + } + for i, eip := range cfg.ExtraEips { + if err := EnableEIP(eip, &jt); err != nil { + // Disable it, so caller can check if it's activated or not + cfg.ExtraEips = append(cfg.ExtraEips[:i], cfg.ExtraEips[i+1:]...) + log.Error("EIP activation failed", "eip", eip, "error", err) + } + } + cfg.JumpTable = jt + } + + return &EVMInterpreter{ + evm: evm, + cfg: cfg, + } +} + +// Run loops and evaluates the contract's code with the given input data and returns +// the return byte-slice and an error if one occurred. +// +// It's important to note that any errors returned by the interpreter should be +// considered a revert-and-consume-all-gas operation except for +// ErrExecutionReverted which means revert-and-keep-gas-left. +func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (ret []byte, err error) { + if contract.Address() == BuiltinAddr { + self := AccountRef(contract.Caller()) + if _, ok := contract.caller.(*Contract); ok { + contract = contract.AsDelegate() + } + contract.self = self + } + + // Increment the call depth which is restricted to 1024 + in.evm.depth++ + defer func() { in.evm.depth-- }() + + // Make sure the readOnly is only set if we aren't in readOnly yet. + // This also makes sure that the readOnly flag isn't removed for child calls. + if readOnly && !in.readOnly { + in.readOnly = true + defer func() { in.readOnly = false }() + } + + // Reset the previous call's return data. It's unimportant to preserve the old buffer + // as every returning call will return new data anyway. + in.returnData = nil + + // Don't bother with the execution if there's no code. + // Note: this avoids invoking the tracer in any way for simple value + // transfers to EOA accounts. + if len(contract.Code) == 0 { + return nil, nil + } + + var ( + op OpCode // current opcode + mem = NewMemory() // bound memory + stack = newstack() // local stack + callContext = &ScopeContext{ + Memory: mem, + Stack: stack, + Contract: contract, + } + // For optimisation reason we're using uint64 as the program counter. + // It's theoretically possible to go above 2^64. The YP defines the PC + // to be uint256. Practically much less so feasible. + pc = uint64(0) // program counter + cost uint64 + // copies used by tracer + pcCopy uint64 // needed for the deferred EVMLogger + gasCopy uint64 // for EVMLogger to log gas remaining before execution + logged bool // deferred EVMLogger should ignore already logged steps + res []byte // result of the opcode execution function + ) + + // Don't move this deferrred function, it's placed before the capturestate-deferred method, + // so that it get's executed _after_: the capturestate needs the stacks before + // they are returned to the pools + defer func() { + returnStack(stack) + }() + contract.Input = input + + if in.cfg.Debug { + defer func() { + if err != nil { + if !logged { + in.cfg.Tracer.CaptureState(in.evm, pcCopy, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err) + } else { + in.cfg.Tracer.CaptureFault(in.evm, pcCopy, op, gasCopy, cost, callContext, in.evm.depth, err) + } + } + }() + } + // The Interpreter main run loop (contextual). This loop runs until either an + // explicit STOP, RETURN or SELFDESTRUCT is executed, an error occurred during + // the execution of one of the operations or until the done flag is set by the + // parent context. + steps := 0 + for { + steps++ + if steps%1000 == 0 && atomic.LoadInt32(&in.evm.abort) != 0 { + break + } + if in.cfg.Debug { + // Capture pre-execution values for tracing. + logged, pcCopy, gasCopy = false, pc, contract.Gas + } + + // Get the operation from the jump table and validate the stack to ensure there are + // enough stack items available to perform the operation. + op = contract.GetOp(pc) + operation := in.cfg.JumpTable[op] + if operation == nil { + return nil, &ErrInvalidOpCode{opcode: op} + } + // Validate stack + if sLen := stack.len(); sLen < operation.minStack { + return nil, &ErrStackUnderflow{stackLen: sLen, required: operation.minStack} + } else if sLen > operation.maxStack { + return nil, &ErrStackOverflow{stackLen: sLen, limit: operation.maxStack} + } + // If the operation is valid, enforce write restrictions + if in.readOnly && in.evm.chainRules.IsByzantium { + // If the interpreter is operating in readonly mode, make sure no + // state-modifying operation is performed. The 3rd stack item + // for a call operation is the value. Transferring value from one + // account to the others means the state is modified and should also + // return with an error. + if operation.writes || ((op == CALL) && stack.Back(2).Sign() != 0) { + return nil, ErrWriteProtection + } + } + // Static portion of gas + cost = operation.constantGas // For tracing + if !contract.UseGas(operation.constantGas) { + return nil, ErrOutOfGas + } + + var memorySize uint64 + // calculate the new memory size and expand the memory to fit + // the operation + // Memory check needs to be done prior to evaluating the dynamic gas portion, + // to detect calculation overflows + if operation.memorySize != nil { + memSize, overflow := operation.memorySize(stack) + if overflow { + return nil, ErrGasUintOverflow + } + // memory is expanded in words of 32 bytes. Gas + // is also calculated in words. + if memorySize, overflow = math.SafeMul(toWordSize(memSize), 32); overflow { + return nil, ErrGasUintOverflow + } + } + // Dynamic portion of gas + // consume the gas and return an error if not enough gas is available. + // cost is explicitly set so that the capture state defer method can get the proper cost + if operation.dynamicGas != nil { + var dynamicCost uint64 + dynamicCost, err = operation.dynamicGas(in.evm, contract, stack, mem, memorySize) + cost += dynamicCost // total cost, for debug tracing + if err != nil || !contract.UseGas(dynamicCost) { + return nil, ErrOutOfGas + } + } + if memorySize > 0 { + mem.Resize(memorySize) + } + + if in.cfg.Debug { + in.cfg.Tracer.CaptureState(in.evm, pc, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err) + logged = true + } + + // execute the operation + res, err = operation.execute(&pc, in, callContext) + // if the operation clears the return data (e.g. it has returning data) + // set the last return to the result of the operation. + if operation.returns { + in.returnData = res + } + + switch { + case err != nil: + return nil, err + case operation.reverts: + return res, ErrExecutionReverted + case operation.halts: + return res, nil + case !operation.jumps: + pc++ + } + } + return nil, nil +} diff --git a/core/vm/jump_table.go b/core/vm/jump_table.go new file mode 100644 index 0000000000..32a44d1bf3 --- /dev/null +++ b/core/vm/jump_table.go @@ -0,0 +1,1033 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "github.com/ava-labs/subnet-evm/params" +) + +type ( + executionFunc func(pc *uint64, interpreter *EVMInterpreter, callContext *ScopeContext) ([]byte, error) + gasFunc func(*EVM, *Contract, *Stack, *Memory, uint64) (uint64, error) // last parameter is the requested memory size as a uint64 + // memorySizeFunc returns the required size, and whether the operation overflowed a uint64 + memorySizeFunc func(*Stack) (size uint64, overflow bool) +) + +type operation struct { + // execute is the operation function + execute executionFunc + constantGas uint64 + dynamicGas gasFunc + // minStack tells how many stack items are required + minStack int + // maxStack specifies the max length the stack can have for this operation + // to not overflow the stack. + maxStack int + + // memorySize returns the memory size required for the operation + memorySize memorySizeFunc + + halts bool // indicates whether the operation should halt further execution + jumps bool // indicates whether the program counter should not increment + writes bool // determines whether this a state modifying operation + reverts bool // determines whether the operation reverts state (implicitly halts) + returns bool // determines whether the operations sets the return data content +} + +var ( + frontierInstructionSet = newFrontierInstructionSet() + homesteadInstructionSet = newHomesteadInstructionSet() + tangerineWhistleInstructionSet = newTangerineWhistleInstructionSet() + spuriousDragonInstructionSet = newSpuriousDragonInstructionSet() + byzantiumInstructionSet = newByzantiumInstructionSet() + constantinopleInstructionSet = newConstantinopleInstructionSet() + istanbulInstructionSet = newIstanbulInstructionSet() + subnetEVMInstructionSet = newSubnetEVMInstructionSet() +) + +// JumpTable contains the EVM opcodes supported at a given fork. +type JumpTable [256]*operation + +// newSubnetEVMInstructionSet returns the frontier, homestead, byzantium, +// contantinople, istanbul, petersburg, subnet-evm instructions. +func newSubnetEVMInstructionSet() JumpTable { + instructionSet := newIstanbulInstructionSet() + enable2929(&instructionSet) + enable3198(&instructionSet) // Base fee opcode https://eips.ethereum.org/EIPS/eip-3198 + return instructionSet +} + +// newIstanbulInstructionSet returns the frontier, +// homestead, byzantium, contantinople and petersburg instructions. +func newIstanbulInstructionSet() JumpTable { + instructionSet := newConstantinopleInstructionSet() + + enable1344(&instructionSet) // ChainID opcode - https://eips.ethereum.org/EIPS/eip-1344 + enable1884(&instructionSet) // Reprice reader opcodes - https://eips.ethereum.org/EIPS/eip-1884 + enable2200(&instructionSet) // Net metered SSTORE - https://eips.ethereum.org/EIPS/eip-2200 + + return instructionSet +} + +// newConstantinopleInstructionSet returns the frontier, homestead, +// byzantium and contantinople instructions. +func newConstantinopleInstructionSet() JumpTable { + instructionSet := newByzantiumInstructionSet() + instructionSet[SHL] = &operation{ + execute: opSHL, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + } + instructionSet[SHR] = &operation{ + execute: opSHR, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + } + instructionSet[SAR] = &operation{ + execute: opSAR, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + } + instructionSet[EXTCODEHASH] = &operation{ + execute: opExtCodeHash, + constantGas: params.ExtcodeHashGasConstantinople, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + } + instructionSet[CREATE2] = &operation{ + execute: opCreate2, + constantGas: params.Create2Gas, + dynamicGas: gasCreate2, + minStack: minStack(4, 1), + maxStack: maxStack(4, 1), + memorySize: memoryCreate2, + writes: true, + returns: true, + } + return instructionSet +} + +// newByzantiumInstructionSet returns the frontier, homestead and +// byzantium instructions. +func newByzantiumInstructionSet() JumpTable { + instructionSet := newSpuriousDragonInstructionSet() + instructionSet[STATICCALL] = &operation{ + execute: opStaticCall, + constantGas: params.CallGasEIP150, + dynamicGas: gasStaticCall, + minStack: minStack(6, 1), + maxStack: maxStack(6, 1), + memorySize: memoryStaticCall, + returns: true, + } + instructionSet[RETURNDATASIZE] = &operation{ + execute: opReturnDataSize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + } + instructionSet[RETURNDATACOPY] = &operation{ + execute: opReturnDataCopy, + constantGas: GasFastestStep, + dynamicGas: gasReturnDataCopy, + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryReturnDataCopy, + } + instructionSet[REVERT] = &operation{ + execute: opRevert, + dynamicGas: gasRevert, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryRevert, + reverts: true, + returns: true, + } + return instructionSet +} + +// EIP 158 a.k.a Spurious Dragon +func newSpuriousDragonInstructionSet() JumpTable { + instructionSet := newTangerineWhistleInstructionSet() + instructionSet[EXP].dynamicGas = gasExpEIP158 + return instructionSet +} + +// EIP 150 a.k.a Tangerine Whistle +func newTangerineWhistleInstructionSet() JumpTable { + instructionSet := newHomesteadInstructionSet() + instructionSet[BALANCE].constantGas = params.BalanceGasEIP150 + instructionSet[EXTCODESIZE].constantGas = params.ExtcodeSizeGasEIP150 + instructionSet[SLOAD].constantGas = params.SloadGasEIP150 + instructionSet[EXTCODECOPY].constantGas = params.ExtcodeCopyBaseEIP150 + instructionSet[CALL].constantGas = params.CallGasEIP150 + instructionSet[CALLCODE].constantGas = params.CallGasEIP150 + instructionSet[DELEGATECALL].constantGas = params.CallGasEIP150 + return instructionSet +} + +// newHomesteadInstructionSet returns the frontier and homestead +// instructions that can be executed during the homestead phase. +func newHomesteadInstructionSet() JumpTable { + instructionSet := newFrontierInstructionSet() + instructionSet[DELEGATECALL] = &operation{ + execute: opDelegateCall, + dynamicGas: gasDelegateCall, + constantGas: params.CallGasFrontier, + minStack: minStack(6, 1), + maxStack: maxStack(6, 1), + memorySize: memoryDelegateCall, + returns: true, + } + return instructionSet +} + +// newFrontierInstructionSet returns the frontier instructions +// that can be executed during the frontier phase. +func newFrontierInstructionSet() JumpTable { + return JumpTable{ + STOP: { + execute: opStop, + constantGas: 0, + minStack: minStack(0, 0), + maxStack: maxStack(0, 0), + halts: true, + }, + ADD: { + execute: opAdd, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + MUL: { + execute: opMul, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + SUB: { + execute: opSub, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + DIV: { + execute: opDiv, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + SDIV: { + execute: opSdiv, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + MOD: { + execute: opMod, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + SMOD: { + execute: opSmod, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + ADDMOD: { + execute: opAddmod, + constantGas: GasMidStep, + minStack: minStack(3, 1), + maxStack: maxStack(3, 1), + }, + MULMOD: { + execute: opMulmod, + constantGas: GasMidStep, + minStack: minStack(3, 1), + maxStack: maxStack(3, 1), + }, + EXP: { + execute: opExp, + dynamicGas: gasExpFrontier, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + SIGNEXTEND: { + execute: opSignExtend, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + LT: { + execute: opLt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + GT: { + execute: opGt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + SLT: { + execute: opSlt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + SGT: { + execute: opSgt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + EQ: { + execute: opEq, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + ISZERO: { + execute: opIszero, + constantGas: GasFastestStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + }, + AND: { + execute: opAnd, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + XOR: { + execute: opXor, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + OR: { + execute: opOr, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + NOT: { + execute: opNot, + constantGas: GasFastestStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + }, + BYTE: { + execute: opByte, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + }, + SHA3: { + execute: opSha3, + constantGas: params.Sha3Gas, + dynamicGas: gasSha3, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + memorySize: memorySha3, + }, + ADDRESS: { + execute: opAddress, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + BALANCE: { + execute: opBalance, + constantGas: params.BalanceGasFrontier, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + }, + ORIGIN: { + execute: opOrigin, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + CALLER: { + execute: opCaller, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + CALLVALUE: { + execute: opCallValue, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + CALLDATALOAD: { + execute: opCallDataLoad, + constantGas: GasFastestStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + }, + CALLDATASIZE: { + execute: opCallDataSize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + CALLDATACOPY: { + execute: opCallDataCopy, + constantGas: GasFastestStep, + dynamicGas: gasCallDataCopy, + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryCallDataCopy, + }, + CODESIZE: { + execute: opCodeSize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + CODECOPY: { + execute: opCodeCopy, + constantGas: GasFastestStep, + dynamicGas: gasCodeCopy, + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryCodeCopy, + }, + GASPRICE: { + execute: opGasprice, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + EXTCODESIZE: { + execute: opExtCodeSize, + constantGas: params.ExtcodeSizeGasFrontier, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + }, + EXTCODECOPY: { + execute: opExtCodeCopy, + constantGas: params.ExtcodeCopyBaseFrontier, + dynamicGas: gasExtCodeCopy, + minStack: minStack(4, 0), + maxStack: maxStack(4, 0), + memorySize: memoryExtCodeCopy, + }, + BLOCKHASH: { + execute: opBlockhash, + constantGas: GasExtStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + }, + COINBASE: { + execute: opCoinbase, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + TIMESTAMP: { + execute: opTimestamp, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + NUMBER: { + execute: opNumber, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + DIFFICULTY: { + execute: opDifficulty, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + GASLIMIT: { + execute: opGasLimit, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + POP: { + execute: opPop, + constantGas: GasQuickStep, + minStack: minStack(1, 0), + maxStack: maxStack(1, 0), + }, + MLOAD: { + execute: opMload, + constantGas: GasFastestStep, + dynamicGas: gasMLoad, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + memorySize: memoryMLoad, + }, + MSTORE: { + execute: opMstore, + constantGas: GasFastestStep, + dynamicGas: gasMStore, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryMStore, + }, + MSTORE8: { + execute: opMstore8, + constantGas: GasFastestStep, + dynamicGas: gasMStore8, + memorySize: memoryMStore8, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + }, + SLOAD: { + execute: opSload, + constantGas: params.SloadGasFrontier, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + }, + SSTORE: { + execute: opSstore, + dynamicGas: gasSStore, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + writes: true, + }, + JUMP: { + execute: opJump, + constantGas: GasMidStep, + minStack: minStack(1, 0), + maxStack: maxStack(1, 0), + jumps: true, + }, + JUMPI: { + execute: opJumpi, + constantGas: GasSlowStep, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + jumps: true, + }, + PC: { + execute: opPc, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + MSIZE: { + execute: opMsize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + GAS: { + execute: opGas, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + JUMPDEST: { + execute: opJumpdest, + constantGas: params.JumpdestGas, + minStack: minStack(0, 0), + maxStack: maxStack(0, 0), + }, + PUSH1: { + execute: opPush1, + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH2: { + execute: makePush(2, 2), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH3: { + execute: makePush(3, 3), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH4: { + execute: makePush(4, 4), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH5: { + execute: makePush(5, 5), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH6: { + execute: makePush(6, 6), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH7: { + execute: makePush(7, 7), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH8: { + execute: makePush(8, 8), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH9: { + execute: makePush(9, 9), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH10: { + execute: makePush(10, 10), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH11: { + execute: makePush(11, 11), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH12: { + execute: makePush(12, 12), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH13: { + execute: makePush(13, 13), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH14: { + execute: makePush(14, 14), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH15: { + execute: makePush(15, 15), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH16: { + execute: makePush(16, 16), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH17: { + execute: makePush(17, 17), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH18: { + execute: makePush(18, 18), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH19: { + execute: makePush(19, 19), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH20: { + execute: makePush(20, 20), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH21: { + execute: makePush(21, 21), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH22: { + execute: makePush(22, 22), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH23: { + execute: makePush(23, 23), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH24: { + execute: makePush(24, 24), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH25: { + execute: makePush(25, 25), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH26: { + execute: makePush(26, 26), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH27: { + execute: makePush(27, 27), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH28: { + execute: makePush(28, 28), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH29: { + execute: makePush(29, 29), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH30: { + execute: makePush(30, 30), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH31: { + execute: makePush(31, 31), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + PUSH32: { + execute: makePush(32, 32), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + }, + DUP1: { + execute: makeDup(1), + constantGas: GasFastestStep, + minStack: minDupStack(1), + maxStack: maxDupStack(1), + }, + DUP2: { + execute: makeDup(2), + constantGas: GasFastestStep, + minStack: minDupStack(2), + maxStack: maxDupStack(2), + }, + DUP3: { + execute: makeDup(3), + constantGas: GasFastestStep, + minStack: minDupStack(3), + maxStack: maxDupStack(3), + }, + DUP4: { + execute: makeDup(4), + constantGas: GasFastestStep, + minStack: minDupStack(4), + maxStack: maxDupStack(4), + }, + DUP5: { + execute: makeDup(5), + constantGas: GasFastestStep, + minStack: minDupStack(5), + maxStack: maxDupStack(5), + }, + DUP6: { + execute: makeDup(6), + constantGas: GasFastestStep, + minStack: minDupStack(6), + maxStack: maxDupStack(6), + }, + DUP7: { + execute: makeDup(7), + constantGas: GasFastestStep, + minStack: minDupStack(7), + maxStack: maxDupStack(7), + }, + DUP8: { + execute: makeDup(8), + constantGas: GasFastestStep, + minStack: minDupStack(8), + maxStack: maxDupStack(8), + }, + DUP9: { + execute: makeDup(9), + constantGas: GasFastestStep, + minStack: minDupStack(9), + maxStack: maxDupStack(9), + }, + DUP10: { + execute: makeDup(10), + constantGas: GasFastestStep, + minStack: minDupStack(10), + maxStack: maxDupStack(10), + }, + DUP11: { + execute: makeDup(11), + constantGas: GasFastestStep, + minStack: minDupStack(11), + maxStack: maxDupStack(11), + }, + DUP12: { + execute: makeDup(12), + constantGas: GasFastestStep, + minStack: minDupStack(12), + maxStack: maxDupStack(12), + }, + DUP13: { + execute: makeDup(13), + constantGas: GasFastestStep, + minStack: minDupStack(13), + maxStack: maxDupStack(13), + }, + DUP14: { + execute: makeDup(14), + constantGas: GasFastestStep, + minStack: minDupStack(14), + maxStack: maxDupStack(14), + }, + DUP15: { + execute: makeDup(15), + constantGas: GasFastestStep, + minStack: minDupStack(15), + maxStack: maxDupStack(15), + }, + DUP16: { + execute: makeDup(16), + constantGas: GasFastestStep, + minStack: minDupStack(16), + maxStack: maxDupStack(16), + }, + SWAP1: { + execute: makeSwap(1), + constantGas: GasFastestStep, + minStack: minSwapStack(2), + maxStack: maxSwapStack(2), + }, + SWAP2: { + execute: makeSwap(2), + constantGas: GasFastestStep, + minStack: minSwapStack(3), + maxStack: maxSwapStack(3), + }, + SWAP3: { + execute: makeSwap(3), + constantGas: GasFastestStep, + minStack: minSwapStack(4), + maxStack: maxSwapStack(4), + }, + SWAP4: { + execute: makeSwap(4), + constantGas: GasFastestStep, + minStack: minSwapStack(5), + maxStack: maxSwapStack(5), + }, + SWAP5: { + execute: makeSwap(5), + constantGas: GasFastestStep, + minStack: minSwapStack(6), + maxStack: maxSwapStack(6), + }, + SWAP6: { + execute: makeSwap(6), + constantGas: GasFastestStep, + minStack: minSwapStack(7), + maxStack: maxSwapStack(7), + }, + SWAP7: { + execute: makeSwap(7), + constantGas: GasFastestStep, + minStack: minSwapStack(8), + maxStack: maxSwapStack(8), + }, + SWAP8: { + execute: makeSwap(8), + constantGas: GasFastestStep, + minStack: minSwapStack(9), + maxStack: maxSwapStack(9), + }, + SWAP9: { + execute: makeSwap(9), + constantGas: GasFastestStep, + minStack: minSwapStack(10), + maxStack: maxSwapStack(10), + }, + SWAP10: { + execute: makeSwap(10), + constantGas: GasFastestStep, + minStack: minSwapStack(11), + maxStack: maxSwapStack(11), + }, + SWAP11: { + execute: makeSwap(11), + constantGas: GasFastestStep, + minStack: minSwapStack(12), + maxStack: maxSwapStack(12), + }, + SWAP12: { + execute: makeSwap(12), + constantGas: GasFastestStep, + minStack: minSwapStack(13), + maxStack: maxSwapStack(13), + }, + SWAP13: { + execute: makeSwap(13), + constantGas: GasFastestStep, + minStack: minSwapStack(14), + maxStack: maxSwapStack(14), + }, + SWAP14: { + execute: makeSwap(14), + constantGas: GasFastestStep, + minStack: minSwapStack(15), + maxStack: maxSwapStack(15), + }, + SWAP15: { + execute: makeSwap(15), + constantGas: GasFastestStep, + minStack: minSwapStack(16), + maxStack: maxSwapStack(16), + }, + SWAP16: { + execute: makeSwap(16), + constantGas: GasFastestStep, + minStack: minSwapStack(17), + maxStack: maxSwapStack(17), + }, + LOG0: { + execute: makeLog(0), + dynamicGas: makeGasLog(0), + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryLog, + writes: true, + }, + LOG1: { + execute: makeLog(1), + dynamicGas: makeGasLog(1), + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryLog, + writes: true, + }, + LOG2: { + execute: makeLog(2), + dynamicGas: makeGasLog(2), + minStack: minStack(4, 0), + maxStack: maxStack(4, 0), + memorySize: memoryLog, + writes: true, + }, + LOG3: { + execute: makeLog(3), + dynamicGas: makeGasLog(3), + minStack: minStack(5, 0), + maxStack: maxStack(5, 0), + memorySize: memoryLog, + writes: true, + }, + LOG4: { + execute: makeLog(4), + dynamicGas: makeGasLog(4), + minStack: minStack(6, 0), + maxStack: maxStack(6, 0), + memorySize: memoryLog, + writes: true, + }, + CREATE: { + execute: opCreate, + constantGas: params.CreateGas, + dynamicGas: gasCreate, + minStack: minStack(3, 1), + maxStack: maxStack(3, 1), + memorySize: memoryCreate, + writes: true, + returns: true, + }, + CALL: { + execute: opCall, + constantGas: params.CallGasFrontier, + dynamicGas: gasCall, + minStack: minStack(7, 1), + maxStack: maxStack(7, 1), + memorySize: memoryCall, + returns: true, + }, + CALLCODE: { + execute: opCallCode, + constantGas: params.CallGasFrontier, + dynamicGas: gasCallCode, + minStack: minStack(7, 1), + maxStack: maxStack(7, 1), + memorySize: memoryCall, + returns: true, + }, + RETURN: { + execute: opReturn, + dynamicGas: gasReturn, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryReturn, + halts: true, + }, + SELFDESTRUCT: { + execute: opSuicide, + dynamicGas: gasSelfdestruct, + minStack: minStack(1, 0), + maxStack: maxStack(1, 0), + halts: true, + writes: true, + }, + } +} diff --git a/core/vm/logger.go b/core/vm/logger.go new file mode 100644 index 0000000000..c76cffc3d1 --- /dev/null +++ b/core/vm/logger.go @@ -0,0 +1,366 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "encoding/hex" + "fmt" + "io" + "math/big" + "strings" + "time" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/holiman/uint256" +) + +// Storage represents a contract's storage. +type Storage map[common.Hash]common.Hash + +// Copy duplicates the current storage. +func (s Storage) Copy() Storage { + cpy := make(Storage) + for key, value := range s { + cpy[key] = value + } + return cpy +} + +// LogConfig are the configuration options for structured logger the EVM +type LogConfig struct { + EnableMemory bool // enable memory capture + DisableStack bool // disable stack capture + DisableStorage bool // disable storage capture + EnableReturnData bool // enable return data capture + Debug bool // print output during capture end + Limit int // maximum length of output, but zero means unlimited + // Chain overrides, can be used to execute a trace using future fork rules + Overrides *params.ChainConfig `json:"overrides,omitempty"` +} + +//go:generate gencodec -type StructLog -field-override structLogMarshaling -out gen_structlog.go + +// StructLog is emitted to the EVM each cycle and lists information about the current internal state +// prior to the execution of the statement. +type StructLog struct { + Pc uint64 `json:"pc"` + Op OpCode `json:"op"` + Gas uint64 `json:"gas"` + GasCost uint64 `json:"gasCost"` + Memory []byte `json:"memory"` + MemorySize int `json:"memSize"` + Stack []uint256.Int `json:"stack"` + ReturnData []byte `json:"returnData"` + Storage map[common.Hash]common.Hash `json:"-"` + Depth int `json:"depth"` + RefundCounter uint64 `json:"refund"` + Err error `json:"-"` +} + +// overrides for gencodec +type structLogMarshaling struct { + Gas math.HexOrDecimal64 + GasCost math.HexOrDecimal64 + Memory hexutil.Bytes + ReturnData hexutil.Bytes + OpName string `json:"opName"` // adds call to OpName() in MarshalJSON + ErrorString string `json:"error"` // adds call to ErrorString() in MarshalJSON +} + +// OpName formats the operand name in a human-readable format. +func (s *StructLog) OpName() string { + return s.Op.String() +} + +// ErrorString formats the log's error as a string. +func (s *StructLog) ErrorString() string { + if s.Err != nil { + return s.Err.Error() + } + return "" +} + +// EVMLogger is used to collect execution traces from an EVM transaction +// execution. CaptureState is called for each step of the VM with the +// current VM state. +// Note that reference types are actual VM data structures; make copies +// if you need to retain them beyond the current call. +type EVMLogger interface { + CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) + CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) + CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) + CaptureExit(output []byte, gasUsed uint64, err error) + CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) + CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) +} + +// StructLogger is an EVM state logger and implements EVMLogger. +// +// StructLogger can capture state based on the given Log configuration and also keeps +// a track record of modified storage which is used in reporting snapshots of the +// contract their storage. +type StructLogger struct { + cfg LogConfig + + storage map[common.Address]Storage + logs []StructLog + output []byte + err error +} + +// NewStructLogger returns a new logger +func NewStructLogger(cfg *LogConfig) *StructLogger { + logger := &StructLogger{ + storage: make(map[common.Address]Storage), + } + if cfg != nil { + logger.cfg = *cfg + } + return logger +} + +// Reset clears the data held by the logger. +func (l *StructLogger) Reset() { + l.storage = make(map[common.Address]Storage) + l.output = make([]byte, 0) + l.logs = l.logs[:0] + l.err = nil +} + +// CaptureStart implements the EVMLogger interface to initialize the tracing operation. +func (l *StructLogger) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { +} + +// CaptureState logs a new structured log message and pushes it out to the environment +// +// CaptureState also tracks SLOAD/SSTORE ops to track storage change. +func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { + memory := scope.Memory + stack := scope.Stack + contract := scope.Contract + // check if already accumulated the specified number of logs + if l.cfg.Limit != 0 && l.cfg.Limit <= len(l.logs) { + return + } + // Copy a snapshot of the current memory state to a new buffer + var mem []byte + if l.cfg.EnableMemory { + mem = make([]byte, len(memory.Data())) + copy(mem, memory.Data()) + } + // Copy a snapshot of the current stack state to a new buffer + var stck []uint256.Int + if !l.cfg.DisableStack { + stck = make([]uint256.Int, len(stack.Data())) + for i, item := range stack.Data() { + stck[i] = item + } + } + // Copy a snapshot of the current storage to a new container + var storage Storage + if !l.cfg.DisableStorage && (op == SLOAD || op == SSTORE) { + // initialise new changed values storage container for this contract + // if not present. + if l.storage[contract.Address()] == nil { + l.storage[contract.Address()] = make(Storage) + } + // capture SLOAD opcodes and record the read entry in the local storage + if op == SLOAD && stack.len() >= 1 { + var ( + address = common.Hash(stack.data[stack.len()-1].Bytes32()) + value = env.StateDB.GetState(contract.Address(), address) + ) + l.storage[contract.Address()][address] = value + storage = l.storage[contract.Address()].Copy() + } else if op == SSTORE && stack.len() >= 2 { + // capture SSTORE opcodes and record the written entry in the local storage. + var ( + value = common.Hash(stack.data[stack.len()-2].Bytes32()) + address = common.Hash(stack.data[stack.len()-1].Bytes32()) + ) + l.storage[contract.Address()][address] = value + storage = l.storage[contract.Address()].Copy() + } + } + var rdata []byte + if l.cfg.EnableReturnData { + rdata = make([]byte, len(rData)) + copy(rdata, rData) + } + // create a new snapshot of the EVM. + log := StructLog{pc, op, gas, cost, mem, memory.Len(), stck, rdata, storage, depth, env.StateDB.GetRefund(), err} + l.logs = append(l.logs, log) +} + +// CaptureFault implements the EVMLogger interface to trace an execution fault +// while running an opcode. +func (l *StructLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { +} + +// CaptureEnd is called after the call finishes to finalize the tracing. +func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) { + l.output = output + l.err = err + if l.cfg.Debug { + fmt.Printf("0x%x\n", output) + if err != nil { + fmt.Printf(" error: %v\n", err) + } + } +} + +func (l *StructLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (l *StructLogger) CaptureExit(output []byte, gasUsed uint64, err error) {} + +// StructLogs returns the captured log entries. +func (l *StructLogger) StructLogs() []StructLog { return l.logs } + +// Error returns the VM error captured by the trace. +func (l *StructLogger) Error() error { return l.err } + +// Output returns the VM return value captured by the trace. +func (l *StructLogger) Output() []byte { return l.output } + +// WriteTrace writes a formatted trace to the given writer +func WriteTrace(writer io.Writer, logs []StructLog) { + for _, log := range logs { + fmt.Fprintf(writer, "%-16spc=%08d gas=%v cost=%v", log.Op, log.Pc, log.Gas, log.GasCost) + if log.Err != nil { + fmt.Fprintf(writer, " ERROR: %v", log.Err) + } + fmt.Fprintln(writer) + + if len(log.Stack) > 0 { + fmt.Fprintln(writer, "Stack:") + for i := len(log.Stack) - 1; i >= 0; i-- { + fmt.Fprintf(writer, "%08d %s\n", len(log.Stack)-i-1, log.Stack[i].Hex()) + } + } + if len(log.Memory) > 0 { + fmt.Fprintln(writer, "Memory:") + fmt.Fprint(writer, hex.Dump(log.Memory)) + } + if len(log.Storage) > 0 { + fmt.Fprintln(writer, "Storage:") + for h, item := range log.Storage { + fmt.Fprintf(writer, "%x: %x\n", h, item) + } + } + if len(log.ReturnData) > 0 { + fmt.Fprintln(writer, "ReturnData:") + fmt.Fprint(writer, hex.Dump(log.ReturnData)) + } + fmt.Fprintln(writer) + } +} + +// WriteLogs writes vm logs in a readable format to the given writer +func WriteLogs(writer io.Writer, logs []*types.Log) { + for _, log := range logs { + fmt.Fprintf(writer, "LOG%d: %x bn=%d txi=%x\n", len(log.Topics), log.Address, log.BlockNumber, log.TxIndex) + + for i, topic := range log.Topics { + fmt.Fprintf(writer, "%08d %x\n", i, topic) + } + + fmt.Fprint(writer, hex.Dump(log.Data)) + fmt.Fprintln(writer) + } +} + +type mdLogger struct { + out io.Writer + cfg *LogConfig +} + +// NewMarkdownLogger creates a logger which outputs information in a format adapted +// for human readability, and is also a valid markdown table +func NewMarkdownLogger(cfg *LogConfig, writer io.Writer) *mdLogger { + l := &mdLogger{writer, cfg} + if l.cfg == nil { + l.cfg = &LogConfig{} + } + return l +} + +func (t *mdLogger) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + if !create { + fmt.Fprintf(t.out, "From: `%v`\nTo: `%v`\nData: `0x%x`\nGas: `%d`\nValue `%v` wei\n", + from.String(), to.String(), + input, gas, value) + } else { + fmt.Fprintf(t.out, "From: `%v`\nCreate at: `%v`\nData: `0x%x`\nGas: `%d`\nValue `%v` wei\n", + from.String(), to.String(), + input, gas, value) + } + + fmt.Fprintf(t.out, ` +| Pc | Op | Cost | Stack | RStack | Refund | +|-------|-------------|------|-----------|-----------|---------| +`) +} + +// CaptureState also tracks SLOAD/SSTORE ops to track storage change. +func (t *mdLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { + stack := scope.Stack + fmt.Fprintf(t.out, "| %4d | %10v | %3d |", pc, op, cost) + + if !t.cfg.DisableStack { + // format stack + var a []string + for _, elem := range stack.data { + a = append(a, elem.Hex()) + } + b := fmt.Sprintf("[%v]", strings.Join(a, ",")) + fmt.Fprintf(t.out, "%10v |", b) + } + fmt.Fprintf(t.out, "%10v |", env.StateDB.GetRefund()) + fmt.Fprintln(t.out, "") + if err != nil { + fmt.Fprintf(t.out, "Error: %v\n", err) + } +} + +func (t *mdLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { + fmt.Fprintf(t.out, "\nError: at pc=%d, op=%v: %v\n", pc, op, err) +} + +func (t *mdLogger) CaptureEnd(output []byte, gasUsed uint64, tm time.Duration, err error) { + fmt.Fprintf(t.out, "\nOutput: `0x%x`\nConsumed gas: `%d`\nError: `%v`\n", + output, gasUsed, err) +} + +func (t *mdLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (t *mdLogger) CaptureExit(output []byte, gasUsed uint64, err error) {} diff --git a/core/vm/logger_json.go b/core/vm/logger_json.go new file mode 100644 index 0000000000..b646307c44 --- /dev/null +++ b/core/vm/logger_json.go @@ -0,0 +1,104 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "encoding/json" + "io" + "math/big" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" +) + +type JSONLogger struct { + encoder *json.Encoder + cfg *LogConfig +} + +// NewJSONLogger creates a new EVM tracer that prints execution steps as JSON objects +// into the provided stream. +func NewJSONLogger(cfg *LogConfig, writer io.Writer) *JSONLogger { + l := &JSONLogger{json.NewEncoder(writer), cfg} + if l.cfg == nil { + l.cfg = &LogConfig{} + } + return l +} + +func (l *JSONLogger) CaptureStart(env *EVM, from, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { +} + +func (l *JSONLogger) CaptureFault(*EVM, uint64, OpCode, uint64, uint64, *ScopeContext, int, error) {} + +// CaptureState outputs state information on the logger. +func (l *JSONLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { + memory := scope.Memory + stack := scope.Stack + + log := StructLog{ + Pc: pc, + Op: op, + Gas: gas, + GasCost: cost, + MemorySize: memory.Len(), + Depth: depth, + RefundCounter: env.StateDB.GetRefund(), + Err: err, + } + if l.cfg.EnableMemory { + log.Memory = memory.Data() + } + if !l.cfg.DisableStack { + log.Stack = stack.data + } + if l.cfg.EnableReturnData { + log.ReturnData = rData + } + l.encoder.Encode(log) +} + +// CaptureEnd is triggered at end of execution. +func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) { + type endLog struct { + Output string `json:"output"` + GasUsed math.HexOrDecimal64 `json:"gasUsed"` + Time time.Duration `json:"time"` + Err string `json:"error,omitempty"` + } + var errMsg string + if err != nil { + errMsg = err.Error() + } + l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, errMsg}) +} + +func (l *JSONLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (l *JSONLogger) CaptureExit(output []byte, gasUsed uint64, err error) {} diff --git a/core/vm/logger_test.go b/core/vm/logger_test.go new file mode 100644 index 0000000000..a7717e438c --- /dev/null +++ b/core/vm/logger_test.go @@ -0,0 +1,84 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/holiman/uint256" +) + +type dummyContractRef struct { + calledForEach bool +} + +func (dummyContractRef) Address() common.Address { return common.Address{} } +func (dummyContractRef) Value() *big.Int { return new(big.Int) } +func (dummyContractRef) SetCode(common.Hash, []byte) {} +func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) { + d.calledForEach = true +} +func (d *dummyContractRef) SubBalance(amount *big.Int) {} +func (d *dummyContractRef) AddBalance(amount *big.Int) {} +func (d *dummyContractRef) SetBalance(*big.Int) {} +func (d *dummyContractRef) SetNonce(uint64) {} +func (d *dummyContractRef) Balance() *big.Int { return new(big.Int) } + +type dummyStatedb struct { + state.StateDB +} + +func (*dummyStatedb) GetRefund() uint64 { return 1337 } + +func TestStoreCapture(t *testing.T) { + var ( + env = NewEVM(BlockContext{}, TxContext{}, &dummyStatedb{}, params.TestChainConfig, Config{}) + logger = NewStructLogger(nil) + contract = NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 0) + scope = &ScopeContext{ + Memory: NewMemory(), + Stack: newstack(), + Contract: contract, + } + ) + scope.Stack.push(uint256.NewInt(1)) + scope.Stack.push(new(uint256.Int)) + var index common.Hash + logger.CaptureState(env, 0, SSTORE, 0, 0, scope, nil, 0, nil) + if len(logger.storage[contract.Address()]) == 0 { + t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), + len(logger.storage[contract.Address()])) + } + exp := common.BigToHash(big.NewInt(1)) + if logger.storage[contract.Address()][index] != exp { + t.Errorf("expected %x, got %x", exp, logger.storage[contract.Address()][index]) + } +} diff --git a/core/vm/memory.go b/core/vm/memory.go new file mode 100644 index 0000000000..51bf0a5b83 --- /dev/null +++ b/core/vm/memory.go @@ -0,0 +1,133 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "fmt" + + "github.com/holiman/uint256" +) + +// Memory implements a simple memory model for the ethereum virtual machine. +type Memory struct { + store []byte + lastGasCost uint64 +} + +// NewMemory returns a new memory model. +func NewMemory() *Memory { + return &Memory{} +} + +// Set sets offset + size to value +func (m *Memory) Set(offset, size uint64, value []byte) { + // It's possible the offset is greater than 0 and size equals 0. This is because + // the calcMemSize (common.go) could potentially return 0 when size is zero (NO-OP) + if size > 0 { + // length of store may never be less than offset + size. + // The store should be resized PRIOR to setting the memory + if offset+size > uint64(len(m.store)) { + panic("invalid memory: store empty") + } + copy(m.store[offset:offset+size], value) + } +} + +// Set32 sets the 32 bytes starting at offset to the value of val, left-padded with zeroes to +// 32 bytes. +func (m *Memory) Set32(offset uint64, val *uint256.Int) { + // length of store may never be less than offset + size. + // The store should be resized PRIOR to setting the memory + if offset+32 > uint64(len(m.store)) { + panic("invalid memory: store empty") + } + // Zero the memory area + copy(m.store[offset:offset+32], []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}) + // Fill in relevant bits + val.WriteToSlice(m.store[offset:]) +} + +// Resize resizes the memory to size +func (m *Memory) Resize(size uint64) { + if uint64(m.Len()) < size { + m.store = append(m.store, make([]byte, size-uint64(m.Len()))...) + } +} + +// Get returns offset + size as a new slice +func (m *Memory) GetCopy(offset, size int64) (cpy []byte) { + if size == 0 { + return nil + } + + if len(m.store) > int(offset) { + cpy = make([]byte, size) + copy(cpy, m.store[offset:offset+size]) + + return + } + + return +} + +// GetPtr returns the offset + size +func (m *Memory) GetPtr(offset, size int64) []byte { + if size == 0 { + return nil + } + + if len(m.store) > int(offset) { + return m.store[offset : offset+size] + } + + return nil +} + +// Len returns the length of the backing slice +func (m *Memory) Len() int { + return len(m.store) +} + +// Data returns the backing slice +func (m *Memory) Data() []byte { + return m.store +} + +// Print dumps the content of the memory. +func (m *Memory) Print() { + fmt.Printf("### mem %d bytes ###\n", len(m.store)) + if len(m.store) > 0 { + addr := 0 + for i := 0; i+32 <= len(m.store); i += 32 { + fmt.Printf("%03d: % x\n", addr, m.store[i:i+32]) + addr++ + } + } else { + fmt.Println("-- empty --") + } + fmt.Println("####################") +} diff --git a/core/vm/memory_table.go b/core/vm/memory_table.go new file mode 100644 index 0000000000..55e2767dbc --- /dev/null +++ b/core/vm/memory_table.go @@ -0,0 +1,124 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +func memorySha3(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) +} + +func memoryCallDataCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(2)) +} + +func memoryReturnDataCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(2)) +} + +func memoryCodeCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(2)) +} + +func memoryExtCodeCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(1), stack.Back(3)) +} + +func memoryMLoad(stack *Stack) (uint64, bool) { + return calcMemSize64WithUint(stack.Back(0), 32) +} + +func memoryMStore8(stack *Stack) (uint64, bool) { + return calcMemSize64WithUint(stack.Back(0), 1) +} + +func memoryMStore(stack *Stack) (uint64, bool) { + return calcMemSize64WithUint(stack.Back(0), 32) +} + +func memoryCreate(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(1), stack.Back(2)) +} + +func memoryCreate2(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(1), stack.Back(2)) +} + +func memoryCall(stack *Stack) (uint64, bool) { + x, overflow := calcMemSize64(stack.Back(5), stack.Back(6)) + if overflow { + return 0, true + } + y, overflow := calcMemSize64(stack.Back(3), stack.Back(4)) + if overflow { + return 0, true + } + if x > y { + return x, false + } + return y, false +} + +func memoryDelegateCall(stack *Stack) (uint64, bool) { + x, overflow := calcMemSize64(stack.Back(4), stack.Back(5)) + if overflow { + return 0, true + } + y, overflow := calcMemSize64(stack.Back(2), stack.Back(3)) + if overflow { + return 0, true + } + if x > y { + return x, false + } + return y, false +} + +func memoryStaticCall(stack *Stack) (uint64, bool) { + x, overflow := calcMemSize64(stack.Back(4), stack.Back(5)) + if overflow { + return 0, true + } + y, overflow := calcMemSize64(stack.Back(2), stack.Back(3)) + if overflow { + return 0, true + } + if x > y { + return x, false + } + return y, false +} + +func memoryReturn(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) +} + +func memoryRevert(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) +} + +func memoryLog(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) +} diff --git a/core/vm/opcodes.go b/core/vm/opcodes.go new file mode 100644 index 0000000000..f06cc0848c --- /dev/null +++ b/core/vm/opcodes.go @@ -0,0 +1,558 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "fmt" +) + +// OpCode is an EVM opcode +type OpCode byte + +// IsPush specifies if an opcode is a PUSH opcode. +func (op OpCode) IsPush() bool { + switch op { + case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32: + return true + } + return false +} + +// IsStaticJump specifies if an opcode is JUMP. +func (op OpCode) IsStaticJump() bool { + return op == JUMP +} + +// 0x0 range - arithmetic ops. +const ( + STOP OpCode = iota + ADD + MUL + SUB + DIV + SDIV + MOD + SMOD + ADDMOD + MULMOD + EXP + SIGNEXTEND +) + +// 0x10 range - comparison ops. +const ( + LT OpCode = iota + 0x10 + GT + SLT + SGT + EQ + ISZERO + AND + OR + XOR + NOT + BYTE + SHL + SHR + SAR + + SHA3 OpCode = 0x20 +) + +// 0x30 range - closure state. +const ( + ADDRESS OpCode = 0x30 + iota + BALANCE + ORIGIN + CALLER + CALLVALUE + CALLDATALOAD + CALLDATASIZE + CALLDATACOPY + CODESIZE + CODECOPY + GASPRICE + EXTCODESIZE + EXTCODECOPY + RETURNDATASIZE + RETURNDATACOPY + EXTCODEHASH +) + +// 0x40 range - block operations. +const ( + BLOCKHASH OpCode = 0x40 + iota + COINBASE + TIMESTAMP + NUMBER + DIFFICULTY + GASLIMIT + CHAINID OpCode = 0x46 + SELFBALANCE OpCode = 0x47 + BASEFEE OpCode = 0x48 +) + +// 0x50 range - 'storage' and execution. +const ( + POP OpCode = 0x50 + MLOAD OpCode = 0x51 + MSTORE OpCode = 0x52 + MSTORE8 OpCode = 0x53 + SLOAD OpCode = 0x54 + SSTORE OpCode = 0x55 + JUMP OpCode = 0x56 + JUMPI OpCode = 0x57 + PC OpCode = 0x58 + MSIZE OpCode = 0x59 + GAS OpCode = 0x5a + JUMPDEST OpCode = 0x5b +) + +// 0x60 range. +const ( + PUSH1 OpCode = 0x60 + iota + PUSH2 + PUSH3 + PUSH4 + PUSH5 + PUSH6 + PUSH7 + PUSH8 + PUSH9 + PUSH10 + PUSH11 + PUSH12 + PUSH13 + PUSH14 + PUSH15 + PUSH16 + PUSH17 + PUSH18 + PUSH19 + PUSH20 + PUSH21 + PUSH22 + PUSH23 + PUSH24 + PUSH25 + PUSH26 + PUSH27 + PUSH28 + PUSH29 + PUSH30 + PUSH31 + PUSH32 + DUP1 + DUP2 + DUP3 + DUP4 + DUP5 + DUP6 + DUP7 + DUP8 + DUP9 + DUP10 + DUP11 + DUP12 + DUP13 + DUP14 + DUP15 + DUP16 + SWAP1 + SWAP2 + SWAP3 + SWAP4 + SWAP5 + SWAP6 + SWAP7 + SWAP8 + SWAP9 + SWAP10 + SWAP11 + SWAP12 + SWAP13 + SWAP14 + SWAP15 + SWAP16 +) + +// 0xa0 range - logging ops. +const ( + LOG0 OpCode = 0xa0 + iota + LOG1 + LOG2 + LOG3 + LOG4 +) + +// unofficial opcodes used for parsing. +const ( + PUSH OpCode = 0xb0 + iota + DUP + SWAP +) + +// 0xf0 range - closures. +const ( + CREATE OpCode = 0xf0 + iota + CALL + CALLCODE + RETURN + DELEGATECALL + CREATE2 + STATICCALL OpCode = 0xfa + REVERT OpCode = 0xfd + SELFDESTRUCT OpCode = 0xff +) + +// Since the opcodes aren't all in order we can't use a regular slice. +var opCodeToString = map[OpCode]string{ + // 0x0 range - arithmetic ops. + STOP: "STOP", + ADD: "ADD", + MUL: "MUL", + SUB: "SUB", + DIV: "DIV", + SDIV: "SDIV", + MOD: "MOD", + SMOD: "SMOD", + EXP: "EXP", + NOT: "NOT", + LT: "LT", + GT: "GT", + SLT: "SLT", + SGT: "SGT", + EQ: "EQ", + ISZERO: "ISZERO", + SIGNEXTEND: "SIGNEXTEND", + + // 0x10 range - bit ops. + AND: "AND", + OR: "OR", + XOR: "XOR", + BYTE: "BYTE", + SHL: "SHL", + SHR: "SHR", + SAR: "SAR", + ADDMOD: "ADDMOD", + MULMOD: "MULMOD", + + // 0x20 range - crypto. + SHA3: "SHA3", + + // 0x30 range - closure state. + ADDRESS: "ADDRESS", + BALANCE: "BALANCE", + ORIGIN: "ORIGIN", + CALLER: "CALLER", + CALLVALUE: "CALLVALUE", + CALLDATALOAD: "CALLDATALOAD", + CALLDATASIZE: "CALLDATASIZE", + CALLDATACOPY: "CALLDATACOPY", + CODESIZE: "CODESIZE", + CODECOPY: "CODECOPY", + GASPRICE: "GASPRICE", + EXTCODESIZE: "EXTCODESIZE", + EXTCODECOPY: "EXTCODECOPY", + RETURNDATASIZE: "RETURNDATASIZE", + RETURNDATACOPY: "RETURNDATACOPY", + EXTCODEHASH: "EXTCODEHASH", + + // 0x40 range - block operations. + BLOCKHASH: "BLOCKHASH", + COINBASE: "COINBASE", + TIMESTAMP: "TIMESTAMP", + NUMBER: "NUMBER", + DIFFICULTY: "DIFFICULTY", + GASLIMIT: "GASLIMIT", + CHAINID: "CHAINID", + SELFBALANCE: "SELFBALANCE", + BASEFEE: "BASEFEE", + + // 0x50 range - 'storage' and execution. + POP: "POP", + // DUP: "DUP", + // SWAP: "SWAP", + MLOAD: "MLOAD", + MSTORE: "MSTORE", + MSTORE8: "MSTORE8", + SLOAD: "SLOAD", + SSTORE: "SSTORE", + JUMP: "JUMP", + JUMPI: "JUMPI", + PC: "PC", + MSIZE: "MSIZE", + GAS: "GAS", + JUMPDEST: "JUMPDEST", + + // 0x60 range - push. + PUSH1: "PUSH1", + PUSH2: "PUSH2", + PUSH3: "PUSH3", + PUSH4: "PUSH4", + PUSH5: "PUSH5", + PUSH6: "PUSH6", + PUSH7: "PUSH7", + PUSH8: "PUSH8", + PUSH9: "PUSH9", + PUSH10: "PUSH10", + PUSH11: "PUSH11", + PUSH12: "PUSH12", + PUSH13: "PUSH13", + PUSH14: "PUSH14", + PUSH15: "PUSH15", + PUSH16: "PUSH16", + PUSH17: "PUSH17", + PUSH18: "PUSH18", + PUSH19: "PUSH19", + PUSH20: "PUSH20", + PUSH21: "PUSH21", + PUSH22: "PUSH22", + PUSH23: "PUSH23", + PUSH24: "PUSH24", + PUSH25: "PUSH25", + PUSH26: "PUSH26", + PUSH27: "PUSH27", + PUSH28: "PUSH28", + PUSH29: "PUSH29", + PUSH30: "PUSH30", + PUSH31: "PUSH31", + PUSH32: "PUSH32", + + DUP1: "DUP1", + DUP2: "DUP2", + DUP3: "DUP3", + DUP4: "DUP4", + DUP5: "DUP5", + DUP6: "DUP6", + DUP7: "DUP7", + DUP8: "DUP8", + DUP9: "DUP9", + DUP10: "DUP10", + DUP11: "DUP11", + DUP12: "DUP12", + DUP13: "DUP13", + DUP14: "DUP14", + DUP15: "DUP15", + DUP16: "DUP16", + + SWAP1: "SWAP1", + SWAP2: "SWAP2", + SWAP3: "SWAP3", + SWAP4: "SWAP4", + SWAP5: "SWAP5", + SWAP6: "SWAP6", + SWAP7: "SWAP7", + SWAP8: "SWAP8", + SWAP9: "SWAP9", + SWAP10: "SWAP10", + SWAP11: "SWAP11", + SWAP12: "SWAP12", + SWAP13: "SWAP13", + SWAP14: "SWAP14", + SWAP15: "SWAP15", + SWAP16: "SWAP16", + LOG0: "LOG0", + LOG1: "LOG1", + LOG2: "LOG2", + LOG3: "LOG3", + LOG4: "LOG4", + + // 0xf0 range. + CREATE: "CREATE", + CALL: "CALL", + RETURN: "RETURN", + CALLCODE: "CALLCODE", + DELEGATECALL: "DELEGATECALL", + CREATE2: "CREATE2", + STATICCALL: "STATICCALL", + REVERT: "REVERT", + SELFDESTRUCT: "SELFDESTRUCT", + + PUSH: "PUSH", + DUP: "DUP", + SWAP: "SWAP", +} + +func (op OpCode) String() string { + str := opCodeToString[op] + if len(str) == 0 { + return fmt.Sprintf("opcode 0x%x not defined", int(op)) + } + + return str +} + +var stringToOp = map[string]OpCode{ + "STOP": STOP, + "ADD": ADD, + "MUL": MUL, + "SUB": SUB, + "DIV": DIV, + "SDIV": SDIV, + "MOD": MOD, + "SMOD": SMOD, + "EXP": EXP, + "NOT": NOT, + "LT": LT, + "GT": GT, + "SLT": SLT, + "SGT": SGT, + "EQ": EQ, + "ISZERO": ISZERO, + "SIGNEXTEND": SIGNEXTEND, + "AND": AND, + "OR": OR, + "XOR": XOR, + "BYTE": BYTE, + "SHL": SHL, + "SHR": SHR, + "SAR": SAR, + "ADDMOD": ADDMOD, + "MULMOD": MULMOD, + "SHA3": SHA3, + "ADDRESS": ADDRESS, + "BALANCE": BALANCE, + "ORIGIN": ORIGIN, + "CALLER": CALLER, + "CALLVALUE": CALLVALUE, + "CALLDATALOAD": CALLDATALOAD, + "CALLDATASIZE": CALLDATASIZE, + "CALLDATACOPY": CALLDATACOPY, + "CHAINID": CHAINID, + "BASEFEE": BASEFEE, + "DELEGATECALL": DELEGATECALL, + "STATICCALL": STATICCALL, + "CODESIZE": CODESIZE, + "CODECOPY": CODECOPY, + "GASPRICE": GASPRICE, + "EXTCODESIZE": EXTCODESIZE, + "EXTCODECOPY": EXTCODECOPY, + "RETURNDATASIZE": RETURNDATASIZE, + "RETURNDATACOPY": RETURNDATACOPY, + "EXTCODEHASH": EXTCODEHASH, + "BLOCKHASH": BLOCKHASH, + "COINBASE": COINBASE, + "TIMESTAMP": TIMESTAMP, + "NUMBER": NUMBER, + "DIFFICULTY": DIFFICULTY, + "GASLIMIT": GASLIMIT, + "SELFBALANCE": SELFBALANCE, + "POP": POP, + "MLOAD": MLOAD, + "MSTORE": MSTORE, + "MSTORE8": MSTORE8, + "SLOAD": SLOAD, + "SSTORE": SSTORE, + "JUMP": JUMP, + "JUMPI": JUMPI, + "PC": PC, + "MSIZE": MSIZE, + "GAS": GAS, + "JUMPDEST": JUMPDEST, + "PUSH1": PUSH1, + "PUSH2": PUSH2, + "PUSH3": PUSH3, + "PUSH4": PUSH4, + "PUSH5": PUSH5, + "PUSH6": PUSH6, + "PUSH7": PUSH7, + "PUSH8": PUSH8, + "PUSH9": PUSH9, + "PUSH10": PUSH10, + "PUSH11": PUSH11, + "PUSH12": PUSH12, + "PUSH13": PUSH13, + "PUSH14": PUSH14, + "PUSH15": PUSH15, + "PUSH16": PUSH16, + "PUSH17": PUSH17, + "PUSH18": PUSH18, + "PUSH19": PUSH19, + "PUSH20": PUSH20, + "PUSH21": PUSH21, + "PUSH22": PUSH22, + "PUSH23": PUSH23, + "PUSH24": PUSH24, + "PUSH25": PUSH25, + "PUSH26": PUSH26, + "PUSH27": PUSH27, + "PUSH28": PUSH28, + "PUSH29": PUSH29, + "PUSH30": PUSH30, + "PUSH31": PUSH31, + "PUSH32": PUSH32, + "DUP1": DUP1, + "DUP2": DUP2, + "DUP3": DUP3, + "DUP4": DUP4, + "DUP5": DUP5, + "DUP6": DUP6, + "DUP7": DUP7, + "DUP8": DUP8, + "DUP9": DUP9, + "DUP10": DUP10, + "DUP11": DUP11, + "DUP12": DUP12, + "DUP13": DUP13, + "DUP14": DUP14, + "DUP15": DUP15, + "DUP16": DUP16, + "SWAP1": SWAP1, + "SWAP2": SWAP2, + "SWAP3": SWAP3, + "SWAP4": SWAP4, + "SWAP5": SWAP5, + "SWAP6": SWAP6, + "SWAP7": SWAP7, + "SWAP8": SWAP8, + "SWAP9": SWAP9, + "SWAP10": SWAP10, + "SWAP11": SWAP11, + "SWAP12": SWAP12, + "SWAP13": SWAP13, + "SWAP14": SWAP14, + "SWAP15": SWAP15, + "SWAP16": SWAP16, + "LOG0": LOG0, + "LOG1": LOG1, + "LOG2": LOG2, + "LOG3": LOG3, + "LOG4": LOG4, + "CREATE": CREATE, + "CREATE2": CREATE2, + "CALL": CALL, + "RETURN": RETURN, + "CALLCODE": CALLCODE, + "REVERT": REVERT, + "SELFDESTRUCT": SELFDESTRUCT, +} + +// StringToOp finds the opcode whose name is stored in `str`. +func StringToOp(str string) OpCode { + return stringToOp[str] +} diff --git a/core/vm/operations_acl.go b/core/vm/operations_acl.go new file mode 100644 index 0000000000..32a5fca68e --- /dev/null +++ b/core/vm/operations_acl.go @@ -0,0 +1,214 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "errors" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" +) + +// gasSStoreEIP2929 implements gas cost for SSTORE according to EIP-2929 +// +// When calling SSTORE, check if the (address, storage_key) pair is in accessed_storage_keys. +// If it is not, charge an additional COLD_SLOAD_COST gas, and add the pair to accessed_storage_keys. +// Additionally, modify the parameters defined in EIP 2200 as follows: +// +// Parameter Old value New value +// SLOAD_GAS 800 = WARM_STORAGE_READ_COST +// SSTORE_RESET_GAS 5000 5000 - COLD_SLOAD_COST +// +//The other parameters defined in EIP 2200 are unchanged. +// see gasSStoreEIP2200(...) in core/vm/gas_table.go for more info about how EIP 2200 is specified +func gasSStoreEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + // If we fail the minimum gas availability invariant, fail (0) + if contract.Gas <= params.SstoreSentryGasEIP2200 { + return 0, errors.New("not enough gas for reentrancy sentry") + } + // Gas sentry honoured, do the actual gas calculation based on the stored value + var ( + y, x = stack.Back(1), stack.peek() + slot = common.Hash(x.Bytes32()) + current = evm.StateDB.GetState(contract.Address(), slot) + cost = uint64(0) + ) + // Check slot presence in the access list + if addrPresent, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent { + cost = params.ColdSloadCostEIP2929 + // If the caller cannot afford the cost, this change will be rolled back + evm.StateDB.AddSlotToAccessList(contract.Address(), slot) + if !addrPresent { + // Once we're done with YOLOv2 and schedule this for mainnet, might + // be good to remove this panic here, which is just really a + // canary to have during testing + panic("impossible case: address was not present in access list during sstore op") + } + } + value := common.Hash(y.Bytes32()) + + if current == value { // noop (1) + // EIP 2200 original clause: + // return params.SloadGasEIP2200, nil + return cost + params.WarmStorageReadCostEIP2929, nil // SLOAD_GAS + } + original := evm.StateDB.GetCommittedState(contract.Address(), x.Bytes32()) + if original == current { + if original == (common.Hash{}) { // create slot (2.1.1) + return cost + params.SstoreSetGasEIP2200, nil + } + // EIP-2200 original clause: + // return params.SstoreResetGasEIP2200, nil // write existing slot (2.1.2) + return cost + (params.SstoreResetGasEIP2200 - params.ColdSloadCostEIP2929), nil // write existing slot (2.1.2) + } + + // EIP-2200 original clause: + // return params.SloadGasEIP2200, nil // dirty update (2.2) + return cost + params.WarmStorageReadCostEIP2929, nil // dirty update (2.2) +} + +// gasSLoadEIP2929 calculates dynamic gas for SLOAD according to EIP-2929 +// For SLOAD, if the (address, storage_key) pair (where address is the address of the contract +// whose storage is being read) is not yet in accessed_storage_keys, +// charge 2100 gas and add the pair to accessed_storage_keys. +// If the pair is already in accessed_storage_keys, charge 100 gas. +func gasSLoadEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + loc := stack.peek() + slot := common.Hash(loc.Bytes32()) + // Check slot presence in the access list + if _, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent { + // If the caller cannot afford the cost, this change will be rolled back + // If he does afford it, we can skip checking the same thing later on, during execution + evm.StateDB.AddSlotToAccessList(contract.Address(), slot) + return params.ColdSloadCostEIP2929, nil + } + return params.WarmStorageReadCostEIP2929, nil +} + +// gasExtCodeCopyEIP2929 implements extcodecopy according to EIP-2929 +// EIP spec: +// > If the target is not in accessed_addresses, +// > charge COLD_ACCOUNT_ACCESS_COST gas, and add the address to accessed_addresses. +// > Otherwise, charge WARM_STORAGE_READ_COST gas. +func gasExtCodeCopyEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + // memory expansion first (dynamic part of pre-2929 implementation) + gas, err := gasExtCodeCopy(evm, contract, stack, mem, memorySize) + if err != nil { + return 0, err + } + addr := common.Address(stack.peek().Bytes20()) + // Check slot presence in the access list + if !evm.StateDB.AddressInAccessList(addr) { + evm.StateDB.AddAddressToAccessList(addr) + var overflow bool + // We charge (cold-warm), since 'warm' is already charged as constantGas + if gas, overflow = math.SafeAdd(gas, params.ColdAccountAccessCostEIP2929-params.WarmStorageReadCostEIP2929); overflow { + return 0, ErrGasUintOverflow + } + return gas, nil + } + return gas, nil +} + +// gasEip2929AccountCheck checks whether the first stack item (as address) is present in the access list. +// If it is, this method returns '0', otherwise 'cold-warm' gas, presuming that the opcode using it +// is also using 'warm' as constant factor. +// This method is used by: +// - extcodehash, +// - extcodesize, +// - (ext) balance +func gasEip2929AccountCheck(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + addr := common.Address(stack.peek().Bytes20()) + // Check slot presence in the access list + if !evm.StateDB.AddressInAccessList(addr) { + // If the caller cannot afford the cost, this change will be rolled back + evm.StateDB.AddAddressToAccessList(addr) + // The warm storage read cost is already charged as constantGas + return params.ColdAccountAccessCostEIP2929 - params.WarmStorageReadCostEIP2929, nil + } + return 0, nil +} + +func makeCallVariantGasCallEIP2929(oldCalculator gasFunc) gasFunc { + return func(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + addr := common.Address(stack.Back(1).Bytes20()) + // Check slot presence in the access list + warmAccess := evm.StateDB.AddressInAccessList(addr) + // The WarmStorageReadCostEIP2929 (100) is already deducted in the form of a constant cost, so + // the cost to charge for cold access, if any, is Cold - Warm + coldCost := params.ColdAccountAccessCostEIP2929 - params.WarmStorageReadCostEIP2929 + if !warmAccess { + evm.StateDB.AddAddressToAccessList(addr) + // Charge the remaining difference here already, to correctly calculate available + // gas for call + if !contract.UseGas(coldCost) { + return 0, ErrOutOfGas + } + } + // Now call the old calculator, which takes into account + // - create new account + // - transfer value + // - memory expansion + // - 63/64ths rule + gas, err := oldCalculator(evm, contract, stack, mem, memorySize) + if warmAccess || err != nil { + return gas, err + } + // In case of a cold access, we temporarily add the cold charge back, and also + // add it to the returned gas. By adding it to the return, it will be charged + // outside of this function, as part of the dynamic gas, and that will make it + // also become correctly reported to tracers. + contract.Gas += coldCost + return gas + coldCost, nil + } +} + +var ( + gasCallEIP2929 = makeCallVariantGasCallEIP2929(gasCall) + gasDelegateCallEIP2929 = makeCallVariantGasCallEIP2929(gasDelegateCall) + gasStaticCallEIP2929 = makeCallVariantGasCallEIP2929(gasStaticCall) + gasCallCodeEIP2929 = makeCallVariantGasCallEIP2929(gasCallCode) +) + +func gasSelfdestructEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { + var ( + gas uint64 + address = common.Address(stack.peek().Bytes20()) + ) + if !evm.StateDB.AddressInAccessList(address) { + // If the caller cannot afford the cost, this change will be rolled back + evm.StateDB.AddAddressToAccessList(address) + gas = params.ColdAccountAccessCostEIP2929 + } + // if empty and transfers value + if evm.StateDB.Empty(address) && evm.StateDB.GetBalance(contract.Address()).Sign() != 0 { + gas += params.CreateBySelfdestructGas + } + + return gas, nil +} diff --git a/core/vm/runtime/doc.go b/core/vm/runtime/doc.go new file mode 100644 index 0000000000..9aecf35a73 --- /dev/null +++ b/core/vm/runtime/doc.go @@ -0,0 +1,28 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package runtime provides a basic execution model for executing EVM code. +package runtime diff --git a/core/vm/runtime/env.go b/core/vm/runtime/env.go new file mode 100644 index 0000000000..07a1dd7923 --- /dev/null +++ b/core/vm/runtime/env.go @@ -0,0 +1,52 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package runtime + +import ( + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/vm" +) + +func NewEnv(cfg *Config) *vm.EVM { + txContext := vm.TxContext{ + Origin: cfg.Origin, + GasPrice: cfg.GasPrice, + } + blockContext := vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + GetHash: cfg.GetHashFn, + Coinbase: cfg.Coinbase, + BlockNumber: cfg.BlockNumber, + Time: cfg.Time, + Difficulty: cfg.Difficulty, + GasLimit: cfg.GasLimit, + BaseFee: cfg.BaseFee, + } + + return vm.NewEVM(blockContext, txContext, cfg.State, cfg.ChainConfig, cfg.EVMConfig) +} diff --git a/core/vm/runtime/runtime.go b/core/vm/runtime/runtime.go new file mode 100644 index 0000000000..d17655572e --- /dev/null +++ b/core/vm/runtime/runtime.go @@ -0,0 +1,198 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package runtime + +import ( + "math" + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +// Config is a basic type specifying certain configuration flags for running +// the EVM. +type Config struct { + ChainConfig *params.ChainConfig + Difficulty *big.Int + Origin common.Address + Coinbase common.Address + BlockNumber *big.Int + Time *big.Int + GasLimit uint64 + GasPrice *big.Int + Value *big.Int + Debug bool + EVMConfig vm.Config + BaseFee *big.Int + + State *state.StateDB + GetHashFn func(n uint64) common.Hash +} + +// sets defaults on the config +func setDefaults(cfg *Config) { + if cfg.ChainConfig == nil { + cfg.ChainConfig = ¶ms.ChainConfig{ + ChainID: big.NewInt(1), + HomesteadBlock: new(big.Int), + EIP150Block: new(big.Int), + EIP150Hash: common.Hash{}, + EIP155Block: new(big.Int), + EIP158Block: new(big.Int), + ByzantiumBlock: new(big.Int), + ConstantinopleBlock: new(big.Int), + PetersburgBlock: new(big.Int), + IstanbulBlock: new(big.Int), + MuirGlacierBlock: new(big.Int), + SubnetEVMTimestamp: new(big.Int), + } + } + + if cfg.Difficulty == nil { + cfg.Difficulty = new(big.Int) + } + if cfg.Time == nil { + cfg.Time = big.NewInt(time.Now().Unix()) + } + if cfg.GasLimit == 0 { + cfg.GasLimit = math.MaxUint64 + } + if cfg.GasPrice == nil { + cfg.GasPrice = new(big.Int) + } + if cfg.Value == nil { + cfg.Value = new(big.Int) + } + if cfg.BlockNumber == nil { + cfg.BlockNumber = new(big.Int) + } + if cfg.GetHashFn == nil { + cfg.GetHashFn = func(n uint64) common.Hash { + return common.BytesToHash(crypto.Keccak256([]byte(new(big.Int).SetUint64(n).String()))) + } + } + if cfg.BaseFee == nil { + cfg.BaseFee = new(big.Int).Set(params.DefaultFeeConfig.MinBaseFee) + } +} + +// Execute executes the code using the input as call data during the execution. +// It returns the EVM's return value, the new state and an error if it failed. +// +// Execute sets up an in-memory, temporary, environment for the execution of +// the given code. It makes sure that it's restored to its original state afterwards. +func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) { + if cfg == nil { + cfg = new(Config) + } + setDefaults(cfg) + + if cfg.State == nil { + cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + } + var ( + address = common.BytesToAddress([]byte("contract")) + vmenv = NewEnv(cfg) + sender = vm.AccountRef(cfg.Origin) + ) + if rules := cfg.ChainConfig.AvalancheRules(vmenv.Context.BlockNumber, vmenv.Context.Time); rules.IsSubnetEVM { + cfg.State.PrepareAccessList(cfg.Origin, &address, vm.ActivePrecompiles(rules), nil) + } + cfg.State.CreateAccount(address) + // set the receiver's (the executing contract) code for execution. + cfg.State.SetCode(address, code) + // Call the code with the given configuration. + ret, _, err := vmenv.Call( + sender, + common.BytesToAddress([]byte("contract")), + input, + cfg.GasLimit, + cfg.Value, + ) + + return ret, cfg.State, err +} + +// Create executes the code using the EVM create method +func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) { + if cfg == nil { + cfg = new(Config) + } + setDefaults(cfg) + + if cfg.State == nil { + cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + } + var ( + vmenv = NewEnv(cfg) + sender = vm.AccountRef(cfg.Origin) + ) + if rules := cfg.ChainConfig.AvalancheRules(vmenv.Context.BlockNumber, vmenv.Context.Time); rules.IsSubnetEVM { + cfg.State.PrepareAccessList(cfg.Origin, nil, vm.ActivePrecompiles(rules), nil) + } + // Call the code with the given configuration. + code, address, leftOverGas, err := vmenv.Create( + sender, + input, + cfg.GasLimit, + cfg.Value, + ) + return code, address, leftOverGas, err +} + +// Call executes the code given by the contract's address. It will return the +// EVM's return value or an error if it failed. +// +// Call, unlike Execute, requires a config and also requires the State field to +// be set. +func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, error) { + setDefaults(cfg) + + vmenv := NewEnv(cfg) + + sender := cfg.State.GetOrNewStateObject(cfg.Origin) + statedb := cfg.State + + if rules := cfg.ChainConfig.AvalancheRules(vmenv.Context.BlockNumber, vmenv.Context.Time); rules.IsSubnetEVM { + statedb.PrepareAccessList(cfg.Origin, &address, vm.ActivePrecompiles(rules), nil) + } + // Call the code with the given configuration. + ret, leftOverGas, err := vmenv.Call( + sender, + address, + input, + cfg.GasLimit, + cfg.Value, + ) + return ret, leftOverGas, err +} diff --git a/core/vm/runtime/runtime_example_test.go b/core/vm/runtime/runtime_example_test.go new file mode 100644 index 0000000000..eece05b09b --- /dev/null +++ b/core/vm/runtime/runtime_example_test.go @@ -0,0 +1,44 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package runtime_test + +import ( + "fmt" + + "github.com/ava-labs/subnet-evm/core/vm/runtime" + "github.com/ethereum/go-ethereum/common" +) + +func ExampleExecute() { + ret, _, err := runtime.Execute(common.Hex2Bytes("6060604052600a8060106000396000f360606040526008565b00"), nil, nil) + if err != nil { + fmt.Println(err) + } + fmt.Println(ret) + // Output: + // [96 96 96 64 82 96 8 86 91 0] +} diff --git a/core/vm/runtime/runtime_test.go b/core/vm/runtime/runtime_test.go new file mode 100644 index 0000000000..c874846564 --- /dev/null +++ b/core/vm/runtime/runtime_test.go @@ -0,0 +1,951 @@ +// (c) 2019-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package runtime + +import ( + "fmt" + "math/big" + "os" + "strings" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/tracers" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/accounts/abi" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/asm" +) + +func TestDefaults(t *testing.T) { + cfg := new(Config) + setDefaults(cfg) + + if cfg.Difficulty == nil { + t.Error("expected difficulty to be non nil") + } + + if cfg.Time == nil { + t.Error("expected time to be non nil") + } + if cfg.GasLimit == 0 { + t.Error("didn't expect gaslimit to be zero") + } + if cfg.GasPrice == nil { + t.Error("expected time to be non nil") + } + if cfg.Value == nil { + t.Error("expected time to be non nil") + } + if cfg.GetHashFn == nil { + t.Error("expected time to be non nil") + } + if cfg.BlockNumber == nil { + t.Error("expected block number to be non nil") + } +} + +func TestEVM(t *testing.T) { + defer func() { + if r := recover(); r != nil { + t.Fatalf("crashed with: %v", r) + } + }() + + Execute([]byte{ + byte(vm.DIFFICULTY), + byte(vm.TIMESTAMP), + byte(vm.GASLIMIT), + byte(vm.PUSH1), + byte(vm.ORIGIN), + byte(vm.BLOCKHASH), + byte(vm.COINBASE), + }, nil, nil) +} + +func TestExecute(t *testing.T) { + ret, _, err := Execute([]byte{ + byte(vm.PUSH1), 10, + byte(vm.PUSH1), 0, + byte(vm.MSTORE), + byte(vm.PUSH1), 32, + byte(vm.PUSH1), 0, + byte(vm.RETURN), + }, nil, nil) + if err != nil { + t.Fatal("didn't expect error", err) + } + + num := new(big.Int).SetBytes(ret) + if num.Cmp(big.NewInt(10)) != 0 { + t.Error("Expected 10, got", num) + } +} + +func TestCall(t *testing.T) { + state, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + address := common.HexToAddress("0x0a") + state.SetCode(address, []byte{ + byte(vm.PUSH1), 10, + byte(vm.PUSH1), 0, + byte(vm.MSTORE), + byte(vm.PUSH1), 32, + byte(vm.PUSH1), 0, + byte(vm.RETURN), + }) + + ret, _, err := Call(address, nil, &Config{State: state}) + if err != nil { + t.Fatal("didn't expect error", err) + } + + num := new(big.Int).SetBytes(ret) + if num.Cmp(big.NewInt(10)) != 0 { + t.Error("Expected 10, got", num) + } +} + +func BenchmarkCall(b *testing.B) { + definition := `[{"constant":true,"inputs":[],"name":"seller","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"abort","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"value","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[],"name":"refund","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"buyer","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmReceived","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"state","outputs":[{"name":"","type":"uint8"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmPurchase","outputs":[],"type":"function"},{"inputs":[],"type":"constructor"},{"anonymous":false,"inputs":[],"name":"Aborted","type":"event"},{"anonymous":false,"inputs":[],"name":"PurchaseConfirmed","type":"event"},{"anonymous":false,"inputs":[],"name":"ItemReceived","type":"event"},{"anonymous":false,"inputs":[],"name":"Refunded","type":"event"}]` + + code := common.Hex2Bytes("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") + + abi, err := abi.JSON(strings.NewReader(definition)) + if err != nil { + b.Fatal(err) + } + + cpurchase, err := abi.Pack("confirmPurchase") + if err != nil { + b.Fatal(err) + } + creceived, err := abi.Pack("confirmReceived") + if err != nil { + b.Fatal(err) + } + refund, err := abi.Pack("refund") + if err != nil { + b.Fatal(err) + } + + b.ResetTimer() + for i := 0; i < b.N; i++ { + for j := 0; j < 400; j++ { + Execute(code, cpurchase, nil) + Execute(code, creceived, nil) + Execute(code, refund, nil) + } + } +} + +func benchmarkEVM_Create(bench *testing.B, code string) { + var ( + statedb, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + sender = common.BytesToAddress([]byte("sender")) + receiver = common.BytesToAddress([]byte("receiver")) + ) + + statedb.CreateAccount(sender) + statedb.SetCode(receiver, common.FromHex(code)) + runtimeConfig := Config{ + Origin: sender, + State: statedb, + GasLimit: 10000000, + Difficulty: big.NewInt(0x200000), + Time: new(big.Int).SetUint64(0), + Coinbase: common.Address{}, + BlockNumber: new(big.Int).SetUint64(1), + ChainConfig: ¶ms.ChainConfig{ + ChainID: big.NewInt(1), + HomesteadBlock: new(big.Int), + ByzantiumBlock: new(big.Int), + ConstantinopleBlock: new(big.Int), + EIP150Block: new(big.Int), + EIP155Block: new(big.Int), + EIP158Block: new(big.Int), + }, + EVMConfig: vm.Config{}, + } + // Warm up the intpools and stuff + bench.ResetTimer() + for i := 0; i < bench.N; i++ { + Call(receiver, []byte{}, &runtimeConfig) + } + bench.StopTimer() +} + +func BenchmarkEVM_CREATE_500(bench *testing.B) { + // initcode size 500K, repeatedly calls CREATE and then modifies the mem contents + benchmarkEVM_Create(bench, "5b6207a120600080f0600152600056") +} + +func BenchmarkEVM_CREATE2_500(bench *testing.B) { + // initcode size 500K, repeatedly calls CREATE2 and then modifies the mem contents + benchmarkEVM_Create(bench, "5b586207a120600080f5600152600056") +} + +func BenchmarkEVM_CREATE_1200(bench *testing.B) { + // initcode size 1200K, repeatedly calls CREATE and then modifies the mem contents + benchmarkEVM_Create(bench, "5b62124f80600080f0600152600056") +} + +func BenchmarkEVM_CREATE2_1200(bench *testing.B) { + // initcode size 1200K, repeatedly calls CREATE2 and then modifies the mem contents + benchmarkEVM_Create(bench, "5b5862124f80600080f5600152600056") +} + +func fakeHeader(n uint64, parentHash common.Hash) *types.Header { + header := types.Header{ + Coinbase: common.HexToAddress("0x00000000000000000000000000000000deadbeef"), + Number: big.NewInt(int64(n)), + ParentHash: parentHash, + Time: 1000, + Nonce: types.BlockNonce{0x1}, + Extra: []byte{}, + Difficulty: big.NewInt(0), + GasLimit: 100000, + } + return &header +} + +type dummyChain struct { + counter int +} + +// Engine retrieves the chain's consensus engine. +func (d *dummyChain) Engine() consensus.Engine { + return nil +} + +// GetHeader returns the hash corresponding to their hash. +func (d *dummyChain) GetHeader(h common.Hash, n uint64) *types.Header { + d.counter++ + parentHash := common.Hash{} + s := common.LeftPadBytes(big.NewInt(int64(n-1)).Bytes(), 32) + copy(parentHash[:], s) + + // parentHash := common.Hash{byte(n - 1)} + // fmt.Printf("GetHeader(%x, %d) => header with parent %x\n", h, n, parentHash) + return fakeHeader(n, parentHash) +} + +// TestBlockhash tests the blockhash operation. It's a bit special, since it internally +// requires access to a chain reader. +func TestBlockhash(t *testing.T) { + // Current head + n := uint64(1000) + parentHash := common.Hash{} + s := common.LeftPadBytes(big.NewInt(int64(n-1)).Bytes(), 32) + copy(parentHash[:], s) + header := fakeHeader(n, parentHash) + + // This is the contract we're using. It requests the blockhash for current num (should be all zeroes), + // then iteratively fetches all blockhashes back to n-260. + // It returns + // 1. the first (should be zero) + // 2. the second (should be the parent hash) + // 3. the last non-zero hash + // By making the chain reader return hashes which correlate to the number, we can + // verify that it obtained the right hashes where it should + + /* + + pragma solidity ^0.5.3; + contract Hasher{ + + function test() public view returns (bytes32, bytes32, bytes32){ + uint256 x = block.number; + bytes32 first; + bytes32 last; + bytes32 zero; + zero = blockhash(x); // Should be zeroes + first = blockhash(x-1); + for(uint256 i = 2 ; i < 260; i++){ + bytes32 hash = blockhash(x - i); + if (uint256(hash) != 0){ + last = hash; + } + } + return (zero, first, last); + } + } + + */ + // The contract above + data := common.Hex2Bytes("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") + // The method call to 'test()' + input := common.Hex2Bytes("f8a8fd6d") + chain := &dummyChain{} + ret, _, err := Execute(data, input, &Config{ + GetHashFn: core.GetHashFn(header, chain), + BlockNumber: new(big.Int).Set(header.Number), + }) + if err != nil { + t.Fatalf("expected no error, got %v", err) + } + if len(ret) != 96 { + t.Fatalf("expected returndata to be 96 bytes, got %d", len(ret)) + } + + zero := new(big.Int).SetBytes(ret[0:32]) + first := new(big.Int).SetBytes(ret[32:64]) + last := new(big.Int).SetBytes(ret[64:96]) + if zero.BitLen() != 0 { + t.Fatalf("expected zeroes, got %x", ret[0:32]) + } + if first.Uint64() != 999 { + t.Fatalf("second block should be 999, got %d (%x)", first, ret[32:64]) + } + if last.Uint64() != 744 { + t.Fatalf("last block should be 744, got %d (%x)", last, ret[64:96]) + } + if exp, got := 255, chain.counter; exp != got { + t.Errorf("suboptimal; too much chain iteration, expected %d, got %d", exp, got) + } +} + +type stepCounter struct { + inner *vm.JSONLogger + steps int +} + +func (s *stepCounter) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { +} + +func (s *stepCounter) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) { +} + +func (s *stepCounter) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {} + +func (s *stepCounter) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { + s.steps++ + // Enable this for more output + // s.inner.CaptureState(env, pc, op, gas, cost, memory, stack, rStack, contract, depth, err) +} + +// benchmarkNonModifyingCode benchmarks code, but if the code modifies the +// state, this should not be used, since it does not reset the state between runs. +func benchmarkNonModifyingCode(gas uint64, code []byte, name string, tracerCode string, b *testing.B) { + cfg := new(Config) + setDefaults(cfg) + cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + cfg.GasLimit = gas + if len(tracerCode) > 0 { + tracer, err := tracers.New(tracerCode, new(tracers.Context)) + if err != nil { + b.Fatal(err) + } + cfg.EVMConfig = vm.Config{ + Debug: true, + Tracer: tracer, + } + } + var ( + destination = common.BytesToAddress([]byte("contract")) + vmenv = NewEnv(cfg) + sender = vm.AccountRef(cfg.Origin) + ) + cfg.State.CreateAccount(destination) + eoa := common.HexToAddress("E0") + { + cfg.State.CreateAccount(eoa) + cfg.State.SetNonce(eoa, 100) + } + reverting := common.HexToAddress("EE") + { + cfg.State.CreateAccount(reverting) + cfg.State.SetCode(reverting, []byte{ + byte(vm.PUSH1), 0x00, + byte(vm.PUSH1), 0x00, + byte(vm.REVERT), + }) + } + + // cfg.State.CreateAccount(cfg.Origin) + // set the receiver's (the executing contract) code for execution. + cfg.State.SetCode(destination, code) + vmenv.Call(sender, destination, nil, gas, cfg.Value) + + b.Run(name, func(b *testing.B) { + b.ReportAllocs() + for i := 0; i < b.N; i++ { + vmenv.Call(sender, destination, nil, gas, cfg.Value) + } + }) +} + +// BenchmarkSimpleLoop test a pretty simple loop which loops until OOG +// 55 ms +func BenchmarkSimpleLoop(b *testing.B) { + staticCallIdentity := []byte{ + byte(vm.JUMPDEST), // [ count ] + // push args for the call + byte(vm.PUSH1), 0, // out size + byte(vm.DUP1), // out offset + byte(vm.DUP1), // out insize + byte(vm.DUP1), // in offset + byte(vm.PUSH1), 0x4, // address of identity + byte(vm.GAS), // gas + byte(vm.STATICCALL), + byte(vm.POP), // pop return value + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + callIdentity := []byte{ + byte(vm.JUMPDEST), // [ count ] + // push args for the call + byte(vm.PUSH1), 0, // out size + byte(vm.DUP1), // out offset + byte(vm.DUP1), // out insize + byte(vm.DUP1), // in offset + byte(vm.DUP1), // value + byte(vm.PUSH1), 0x4, // address of identity + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), // pop return value + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + callInexistant := []byte{ + byte(vm.JUMPDEST), // [ count ] + // push args for the call + byte(vm.PUSH1), 0, // out size + byte(vm.DUP1), // out offset + byte(vm.DUP1), // out insize + byte(vm.DUP1), // in offset + byte(vm.DUP1), // value + byte(vm.PUSH1), 0xff, // address of existing contract + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), // pop return value + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + callEOA := []byte{ + byte(vm.JUMPDEST), // [ count ] + // push args for the call + byte(vm.PUSH1), 0, // out size + byte(vm.DUP1), // out offset + byte(vm.DUP1), // out insize + byte(vm.DUP1), // in offset + byte(vm.DUP1), // value + byte(vm.PUSH1), 0xE0, // address of EOA + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), // pop return value + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + loopingCode := []byte{ + byte(vm.JUMPDEST), // [ count ] + // push args for the call + byte(vm.PUSH1), 0, // out size + byte(vm.DUP1), // out offset + byte(vm.DUP1), // out insize + byte(vm.DUP1), // in offset + byte(vm.PUSH1), 0x4, // address of identity + byte(vm.GAS), // gas + + byte(vm.POP), byte(vm.POP), byte(vm.POP), byte(vm.POP), byte(vm.POP), byte(vm.POP), + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + calllRevertingContractWithInput := []byte{ + byte(vm.JUMPDEST), // + // push args for the call + byte(vm.PUSH1), 0, // out size + byte(vm.DUP1), // out offset + byte(vm.PUSH1), 0x20, // in size + byte(vm.PUSH1), 0x00, // in offset + byte(vm.PUSH1), 0x00, // value + byte(vm.PUSH1), 0xEE, // address of reverting contract + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), // pop return value + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + // tracer := vm.NewJSONLogger(nil, os.Stdout) + // Execute(loopingCode, nil, &Config{ + // EVMConfig: vm.Config{ + // Debug: true, + // Tracer: tracer, + // }}) + // 100M gas + benchmarkNonModifyingCode(100000000, staticCallIdentity, "staticcall-identity-100M", "", b) + benchmarkNonModifyingCode(100000000, callIdentity, "call-identity-100M", "", b) + benchmarkNonModifyingCode(100000000, loopingCode, "loop-100M", "", b) + benchmarkNonModifyingCode(100000000, callInexistant, "call-nonexist-100M", "", b) + benchmarkNonModifyingCode(100000000, callEOA, "call-EOA-100M", "", b) + benchmarkNonModifyingCode(100000000, calllRevertingContractWithInput, "call-reverting-100M", "", b) + + // benchmarkNonModifyingCode(10000000, staticCallIdentity, "staticcall-identity-10M", b) + // benchmarkNonModifyingCode(10000000, loopingCode, "loop-10M", b) +} + +// TestEip2929Cases contains various testcases that are used for +// EIP-2929 about gas repricings +func TestEip2929Cases(t *testing.T) { + id := 1 + prettyPrint := func(comment string, code []byte) { + instrs := make([]string, 0) + it := asm.NewInstructionIterator(code) + for it.Next() { + if it.Arg() != nil && 0 < len(it.Arg()) { + instrs = append(instrs, fmt.Sprintf("%v 0x%x", it.Op(), it.Arg())) + } else { + instrs = append(instrs, fmt.Sprintf("%v", it.Op())) + } + } + ops := strings.Join(instrs, ", ") + fmt.Printf("### Case %d\n\n", id) + id++ + fmt.Printf("%v\n\nBytecode: \n```\n0x%x\n```\nOperations: \n```\n%v\n```\n\n", + comment, + code, ops) + Execute(code, nil, &Config{ + EVMConfig: vm.Config{ + Debug: true, + Tracer: vm.NewMarkdownLogger(nil, os.Stdout), + ExtraEips: []int{2929}, + }, + }) + } + + { // First eip testcase + code := []byte{ + // Three checks against a precompile + byte(vm.PUSH1), 1, byte(vm.EXTCODEHASH), byte(vm.POP), + byte(vm.PUSH1), 2, byte(vm.EXTCODESIZE), byte(vm.POP), + byte(vm.PUSH1), 3, byte(vm.BALANCE), byte(vm.POP), + // Three checks against a non-precompile + byte(vm.PUSH1), 0xf1, byte(vm.EXTCODEHASH), byte(vm.POP), + byte(vm.PUSH1), 0xf2, byte(vm.EXTCODESIZE), byte(vm.POP), + byte(vm.PUSH1), 0xf3, byte(vm.BALANCE), byte(vm.POP), + // Same three checks (should be cheaper) + byte(vm.PUSH1), 0xf2, byte(vm.EXTCODEHASH), byte(vm.POP), + byte(vm.PUSH1), 0xf3, byte(vm.EXTCODESIZE), byte(vm.POP), + byte(vm.PUSH1), 0xf1, byte(vm.BALANCE), byte(vm.POP), + // Check the origin, and the 'this' + byte(vm.ORIGIN), byte(vm.BALANCE), byte(vm.POP), + byte(vm.ADDRESS), byte(vm.BALANCE), byte(vm.POP), + + byte(vm.STOP), + } + prettyPrint("This checks `EXT`(codehash,codesize,balance) of precompiles, which should be `100`, "+ + "and later checks the same operations twice against some non-precompiles. "+ + "Those are cheaper second time they are accessed. Lastly, it checks the `BALANCE` of `origin` and `this`.", code) + } + + { // EXTCODECOPY + code := []byte{ + // extcodecopy( 0xff,0,0,0,0) + byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, // length, codeoffset, memoffset + byte(vm.PUSH1), 0xff, byte(vm.EXTCODECOPY), + // extcodecopy( 0xff,0,0,0,0) + byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, // length, codeoffset, memoffset + byte(vm.PUSH1), 0xff, byte(vm.EXTCODECOPY), + // extcodecopy( this,0,0,0,0) + byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, // length, codeoffset, memoffset + byte(vm.ADDRESS), byte(vm.EXTCODECOPY), + + byte(vm.STOP), + } + prettyPrint("This checks `extcodecopy( 0xff,0,0,0,0)` twice, (should be expensive first time), "+ + "and then does `extcodecopy( this,0,0,0,0)`.", code) + } + + { // SLOAD + SSTORE + code := []byte{ + + // Add slot `0x1` to access list + byte(vm.PUSH1), 0x01, byte(vm.SLOAD), byte(vm.POP), // SLOAD( 0x1) (add to access list) + // Write to `0x1` which is already in access list + byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x01, byte(vm.SSTORE), // SSTORE( loc: 0x01, val: 0x11) + // Write to `0x2` which is not in access list + byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x02, byte(vm.SSTORE), // SSTORE( loc: 0x02, val: 0x11) + // Write again to `0x2` + byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x02, byte(vm.SSTORE), // SSTORE( loc: 0x02, val: 0x11) + // Read slot in access list (0x2) + byte(vm.PUSH1), 0x02, byte(vm.SLOAD), // SLOAD( 0x2) + // Read slot in access list (0x1) + byte(vm.PUSH1), 0x01, byte(vm.SLOAD), // SLOAD( 0x1) + } + prettyPrint("This checks `sload( 0x1)` followed by `sstore(loc: 0x01, val:0x11)`, then 'naked' sstore:"+ + "`sstore(loc: 0x02, val:0x11)` twice, and `sload(0x2)`, `sload(0x1)`. ", code) + } + { // Call variants + code := []byte{ + // identity precompile + byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), + byte(vm.PUSH1), 0x04, byte(vm.PUSH1), 0x0, byte(vm.CALL), byte(vm.POP), + + // random account - call 1 + byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), + byte(vm.PUSH1), 0xff, byte(vm.PUSH1), 0x0, byte(vm.CALL), byte(vm.POP), + + // random account - call 2 + byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), + byte(vm.PUSH1), 0xff, byte(vm.PUSH1), 0x0, byte(vm.STATICCALL), byte(vm.POP), + } + prettyPrint("This calls the `identity`-precompile (cheap), then calls an account (expensive) and `staticcall`s the same"+ + "account (cheap)", code) + } +} + +// TestColdAccountAccessCost test that the cold account access cost is reported +// correctly +// see: https://github.com/ethereum/go-ethereum/issues/22649 +func TestColdAccountAccessCost(t *testing.T) { + for i, tc := range []struct { + code []byte + step int + want uint64 + }{ + { // EXTCODEHASH(0xff) + code: []byte{byte(vm.PUSH1), 0xFF, byte(vm.EXTCODEHASH), byte(vm.POP)}, + step: 1, + want: 2600, + }, + { // BALANCE(0xff) + code: []byte{byte(vm.PUSH1), 0xFF, byte(vm.BALANCE), byte(vm.POP)}, + step: 1, + want: 2600, + }, + { // CALL(0xff) + code: []byte{ + byte(vm.PUSH1), 0x0, + byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), + byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.CALL), byte(vm.POP), + }, + step: 7, + want: 2855, + }, + { // CALLCODE(0xff) + code: []byte{ + byte(vm.PUSH1), 0x0, + byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), + byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.CALLCODE), byte(vm.POP), + }, + step: 7, + want: 2855, + }, + { // DELEGATECALL(0xff) + code: []byte{ + byte(vm.PUSH1), 0x0, + byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), + byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.DELEGATECALL), byte(vm.POP), + }, + step: 6, + want: 2855, + }, + { // STATICCALL(0xff) + code: []byte{ + byte(vm.PUSH1), 0x0, + byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), + byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.STATICCALL), byte(vm.POP), + }, + step: 6, + want: 2855, + }, + { // SELFDESTRUCT(0xff) + code: []byte{ + byte(vm.PUSH1), 0xff, byte(vm.SELFDESTRUCT), + }, + step: 1, + want: 7600, + }, + } { + tracer := vm.NewStructLogger(nil) + Execute(tc.code, nil, &Config{ + EVMConfig: vm.Config{ + Debug: true, + Tracer: tracer, + }, + }) + have := tracer.StructLogs()[tc.step].GasCost + if want := tc.want; have != want { + for ii, op := range tracer.StructLogs() { + t.Logf("%d: %v %d", ii, op.OpName(), op.GasCost) + } + t.Fatalf("tescase %d, gas report wrong, step %d, have %d want %d", i, tc.step, have, want) + } + } +} + +func TestRuntimeJSTracer(t *testing.T) { + jsTracers := []string{ + `{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, steps:0, + step: function() { this.steps++}, + fault: function() {}, + result: function() { + return [this.enters, this.exits,this.enterGas,this.gasUsed, this.steps].join(",") + }, + enter: function(frame) { + this.enters++; + this.enterGas = frame.getGas(); + }, + exit: function(res) { + this.exits++; + this.gasUsed = res.getGasUsed(); + }}`, + `{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, steps:0, + fault: function() {}, + result: function() { + return [this.enters, this.exits,this.enterGas,this.gasUsed, this.steps].join(",") + }, + enter: function(frame) { + this.enters++; + this.enterGas = frame.getGas(); + }, + exit: function(res) { + this.exits++; + this.gasUsed = res.getGasUsed(); + }}`, + } + tests := []struct { + code []byte + // One result per tracer + results []string + }{ + { + // CREATE + code: []byte{ + // Store initcode in memory at 0x00 (5 bytes left-padded to 32 bytes) + byte(vm.PUSH5), + // Init code: PUSH1 0, PUSH1 0, RETURN (3 steps) + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN), + byte(vm.PUSH1), 0, + byte(vm.MSTORE), + // length, offset, value + byte(vm.PUSH1), 5, byte(vm.PUSH1), 27, byte(vm.PUSH1), 0, + byte(vm.CREATE), + byte(vm.POP), + }, + results: []string{`"1,1,4294935775,6,12"`, `"1,1,4294935775,6,0"`}, + }, + { + // CREATE2 + code: []byte{ + // Store initcode in memory at 0x00 (5 bytes left-padded to 32 bytes) + byte(vm.PUSH5), + // Init code: PUSH1 0, PUSH1 0, RETURN (3 steps) + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN), + byte(vm.PUSH1), 0, + byte(vm.MSTORE), + // salt, length, offset, value + byte(vm.PUSH1), 1, byte(vm.PUSH1), 5, byte(vm.PUSH1), 27, byte(vm.PUSH1), 0, + byte(vm.CREATE2), + byte(vm.POP), + }, + results: []string{`"1,1,4294935766,6,13"`, `"1,1,4294935766,6,0"`}, + }, + { + // CALL + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, // value + byte(vm.PUSH1), 0xbb, // address + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), + }, + results: []string{`"1,1,4294964716,6,13"`, `"1,1,4294964716,6,0"`}, + }, + { + // CALLCODE + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, // value + byte(vm.PUSH1), 0xcc, // address + byte(vm.GAS), // gas + byte(vm.CALLCODE), + byte(vm.POP), + }, + results: []string{`"1,1,4294964716,6,13"`, `"1,1,4294964716,6,0"`}, + }, + { + // STATICCALL + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0xdd, // address + byte(vm.GAS), // gas + byte(vm.STATICCALL), + byte(vm.POP), + }, + results: []string{`"1,1,4294964719,6,12"`, `"1,1,4294964719,6,0"`}, + }, + { + // DELEGATECALL + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0xee, // address + byte(vm.GAS), // gas + byte(vm.DELEGATECALL), + byte(vm.POP), + }, + results: []string{`"1,1,4294964719,6,12"`, `"1,1,4294964719,6,0"`}, + }, + { + // CALL self-destructing contract + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, // value + byte(vm.PUSH1), 0xff, // address + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), + }, + results: []string{`"2,2,0,5003,12"`, `"2,2,0,5003,0"`}, + }, + } + calleeCode := []byte{ + byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, + byte(vm.RETURN), + } + depressedCode := []byte{ + byte(vm.PUSH1), 0xaa, + byte(vm.SELFDESTRUCT), + } + main := common.HexToAddress("0xaa") + for i, jsTracer := range jsTracers { + for j, tc := range tests { + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + statedb.SetCode(main, tc.code) + statedb.SetCode(common.HexToAddress("0xbb"), calleeCode) + statedb.SetCode(common.HexToAddress("0xcc"), calleeCode) + statedb.SetCode(common.HexToAddress("0xdd"), calleeCode) + statedb.SetCode(common.HexToAddress("0xee"), calleeCode) + statedb.SetCode(common.HexToAddress("0xff"), depressedCode) + + tracer, err := tracers.New(jsTracer, new(tracers.Context)) + if err != nil { + t.Fatal(err) + } + _, _, err = Call(main, nil, &Config{ + State: statedb, + EVMConfig: vm.Config{ + Debug: true, + Tracer: tracer, + }, + }) + if err != nil { + t.Fatal("didn't expect error", err) + } + res, err := tracer.GetResult() + if err != nil { + t.Fatal(err) + } + if have, want := string(res), tc.results[i]; have != want { + t.Errorf("wrong result for tracer %d testcase %d, have \n%v\nwant\n%v\n", i, j, have, want) + } + } + } +} + +func TestJSTracerCreateTx(t *testing.T) { + jsTracer := ` + {enters: 0, exits: 0, + step: function() {}, + fault: function() {}, + result: function() { return [this.enters, this.exits].join(",") }, + enter: function(frame) { this.enters++ }, + exit: function(res) { this.exits++ }}` + code := []byte{byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN)} + + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + tracer, err := tracers.New(jsTracer, new(tracers.Context)) + if err != nil { + t.Fatal(err) + } + _, _, _, err = Create(code, &Config{ + State: statedb, + EVMConfig: vm.Config{ + Debug: true, + Tracer: tracer, + }, + }) + if err != nil { + t.Fatal(err) + } + + res, err := tracer.GetResult() + if err != nil { + t.Fatal(err) + } + if have, want := string(res), `"0,0"`; have != want { + t.Errorf("wrong result for tracer, have \n%v\nwant\n%v\n", have, want) + } +} + +func BenchmarkTracerStepVsCallFrame(b *testing.B) { + // Simply pushes and pops some values in a loop + code := []byte{ + byte(vm.JUMPDEST), + byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, + byte(vm.POP), + byte(vm.POP), + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + stepTracer := ` + { + step: function() {}, + fault: function() {}, + result: function() {}, + }` + callFrameTracer := ` + { + enter: function() {}, + exit: function() {}, + fault: function() {}, + result: function() {}, + }` + + benchmarkNonModifyingCode(10000000, code, "tracer-step-10M", stepTracer, b) + benchmarkNonModifyingCode(10000000, code, "tracer-call-frame-10M", callFrameTracer, b) +} diff --git a/core/vm/stack.go b/core/vm/stack.go new file mode 100644 index 0000000000..ebfeeef188 --- /dev/null +++ b/core/vm/stack.go @@ -0,0 +1,110 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "fmt" + "sync" + + "github.com/holiman/uint256" +) + +var stackPool = sync.Pool{ + New: func() interface{} { + return &Stack{data: make([]uint256.Int, 0, 16)} + }, +} + +// Stack is an object for basic stack operations. Items popped to the stack are +// expected to be changed and modified. stack does not take care of adding newly +// initialised objects. +type Stack struct { + data []uint256.Int +} + +func newstack() *Stack { + return stackPool.Get().(*Stack) +} + +func returnStack(s *Stack) { + s.data = s.data[:0] + stackPool.Put(s) +} + +// Data returns the underlying uint256.Int array. +func (st *Stack) Data() []uint256.Int { + return st.data +} + +func (st *Stack) push(d *uint256.Int) { + // NOTE push limit (1024) is checked in baseCheck + st.data = append(st.data, *d) +} +func (st *Stack) pushN(ds ...uint256.Int) { + // FIXME: Is there a way to pass args by pointers. + st.data = append(st.data, ds...) +} + +func (st *Stack) pop() (ret uint256.Int) { + ret = st.data[len(st.data)-1] + st.data = st.data[:len(st.data)-1] + return +} + +func (st *Stack) len() int { + return len(st.data) +} + +func (st *Stack) swap(n int) { + st.data[st.len()-n], st.data[st.len()-1] = st.data[st.len()-1], st.data[st.len()-n] +} + +func (st *Stack) dup(n int) { + st.push(&st.data[st.len()-n]) +} + +func (st *Stack) peek() *uint256.Int { + return &st.data[st.len()-1] +} + +// Back returns the n'th item in stack +func (st *Stack) Back(n int) *uint256.Int { + return &st.data[st.len()-n-1] +} + +// Print dumps the content of the stack +func (st *Stack) Print() { + fmt.Println("### stack ###") + if len(st.data) > 0 { + for i, val := range st.data { + fmt.Printf("%-3d %s\n", i, val.String()) + } + } else { + fmt.Println("-- empty --") + } + fmt.Println("#############") +} diff --git a/core/vm/stack_table.go b/core/vm/stack_table.go new file mode 100644 index 0000000000..bbce8f302f --- /dev/null +++ b/core/vm/stack_table.go @@ -0,0 +1,55 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package vm + +import ( + "github.com/ava-labs/subnet-evm/params" +) + +func minSwapStack(n int) int { + return minStack(n, n) +} + +func maxSwapStack(n int) int { + return maxStack(n, n) +} + +func minDupStack(n int) int { + return minStack(n, n+1) +} + +func maxDupStack(n int) int { + return maxStack(n, n+1) +} + +func maxStack(pop, push int) int { + return int(params.StackLimit) + pop - push +} + +func minStack(pops, push int) int { + return pops +} diff --git a/core/vm/testdata/precompiles/blake2F.json b/core/vm/testdata/precompiles/blake2F.json new file mode 100644 index 0000000000..a25f9ae501 --- /dev/null +++ b/core/vm/testdata/precompiles/blake2F.json @@ -0,0 +1,37 @@ +[ + { + "Input": "0000000048c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001", + "Expected": "08c9bcf367e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d282e6ad7f520e511f6c3e2b8c68059b9442be0454267ce079217e1319cde05b", + "Name": "vector 4", + "Gas": 0, + "NoBenchmark": false + }, + { + "Input": 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"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", + "Name": "cdetrio14", + "Gas": 150, + "NoBenchmark": false + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/bn256Pairing.json b/core/vm/testdata/precompiles/bn256Pairing.json new file mode 100644 index 0000000000..3fbed6b87c --- /dev/null +++ b/core/vm/testdata/precompiles/bn256Pairing.json @@ -0,0 +1,100 @@ +[ + { + "Input": 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+ "Expected": "0000000000000000000000000000000000000000000000000000000000000001", + "Name": "ten_point_match_1", + "Gas": 385000, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "0000000000000000000000000000000000000000000000000000000000000001", + "Name": "ten_point_match_2", + "Gas": 385000, + "NoBenchmark": false + }, + { + "Input": "105456a333e6d636854f987ea7bb713dfd0ae8371a72aea313ae0c32c0bf10160cf031d41b41557f3e7e3ba0c51bebe5da8e6ecd855ec50fc87efcdeac168bcc0476be093a6d2b4bbf907172049874af11e1b6267606e00804d3ff0037ec57fd3010c68cb50161b7d1d96bb71edfec9880171954e56871abf3d93cc94d745fa114c059d74e5b6c4ec14ae5864ebe23a71781d86c29fb8fb6cce94f70d3de7a2101b33461f39d9e887dbb100f170a2345dde3c07e256d1dfa2b657ba5cd030427000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000021a2c3013d2ea92e13c800cde68ef56a294b883f6ac35d25f587c09b1b3c635f7290158a80cd3d66530f74dc94c94adb88f5cdb481acca997b6e60071f08a115f2f997f3dbd66a7afe07fe7862ce239edba9e05c5afff7f8a1259c9733b2dfbb929d1691530ca701b4a106054688728c9972c8512e9789e9567aae23e302ccd75", + "Expected": "0000000000000000000000000000000000000000000000000000000000000001", + "Name": "ten_point_match_3", + "Gas": 113000, + "NoBenchmark": false + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/bn256ScalarMul.json b/core/vm/testdata/precompiles/bn256ScalarMul.json new file mode 100644 index 0000000000..2a28f6304b --- /dev/null +++ b/core/vm/testdata/precompiles/bn256ScalarMul.json @@ -0,0 +1,128 @@ +[ + { + "Input": "2bd3e6d0f3b142924f5ca7b49ce5b9d54c4703d7ae5648e61d02268b1a0a9fb721611ce0a6af85915e2f1d70300909ce2e49dfad4a4619c8390cae66cefdb20400000000000000000000000000000000000000000000000011138ce750fa15c2", + "Expected": "070a8d6a982153cae4be29d434e8faef8a47b274a053f5a4ee2a6c9c13c31e5c031b8ce914eba3a9ffb989f9cdd5b0f01943074bf4f0f315690ec3cec6981afc", + "Name": "chfast1", + "Gas": 6000, + "NoBenchmark": false + }, + { + "Input": "070a8d6a982153cae4be29d434e8faef8a47b274a053f5a4ee2a6c9c13c31e5c031b8ce914eba3a9ffb989f9cdd5b0f01943074bf4f0f315690ec3cec6981afc30644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd46", + "Expected": "025a6f4181d2b4ea8b724290ffb40156eb0adb514c688556eb79cdea0752c2bb2eff3f31dea215f1eb86023a133a996eb6300b44da664d64251d05381bb8a02e", + "Name": "chfast2", + "Gas": 6000, + "NoBenchmark": false + }, + { + "Input": "025a6f4181d2b4ea8b724290ffb40156eb0adb514c688556eb79cdea0752c2bb2eff3f31dea215f1eb86023a133a996eb6300b44da664d64251d05381bb8a02e183227397098d014dc2822db40c0ac2ecbc0b548b438e5469e10460b6c3e7ea3", + "Expected": "14789d0d4a730b354403b5fac948113739e276c23e0258d8596ee72f9cd9d3230af18a63153e0ec25ff9f2951dd3fa90ed0197bfef6e2a1a62b5095b9d2b4a27", + "Name": "chfast3", + "Gas": 6000, + "NoBenchmark": false + }, + { + "Input": "1a87b0584ce92f4593d161480614f2989035225609f08058ccfa3d0f940febe31a2f3c951f6dadcc7ee9007dff81504b0fcd6d7cf59996efdc33d92bf7f9f8f6ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + "Expected": "2cde5879ba6f13c0b5aa4ef627f159a3347df9722efce88a9afbb20b763b4c411aa7e43076f6aee272755a7f9b84832e71559ba0d2e0b17d5f9f01755e5b0d11", + "Name": "cdetrio1", + "Gas": 6000, + "NoBenchmark": false + }, + { + "Input": "1a87b0584ce92f4593d161480614f2989035225609f08058ccfa3d0f940febe31a2f3c951f6dadcc7ee9007dff81504b0fcd6d7cf59996efdc33d92bf7f9f8f630644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000000", + "Expected": "1a87b0584ce92f4593d161480614f2989035225609f08058ccfa3d0f940febe3163511ddc1c3f25d396745388200081287b3fd1472d8339d5fecb2eae0830451", + "Name": "cdetrio2", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "1a87b0584ce92f4593d161480614f2989035225609f08058ccfa3d0f940febe31a2f3c951f6dadcc7ee9007dff81504b0fcd6d7cf59996efdc33d92bf7f9f8f60000000000000000000000000000000100000000000000000000000000000000", + "Expected": "1051acb0700ec6d42a88215852d582efbaef31529b6fcbc3277b5c1b300f5cf0135b2394bb45ab04b8bd7611bd2dfe1de6a4e6e2ccea1ea1955f577cd66af85b", + "Name": "cdetrio3", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "1a87b0584ce92f4593d161480614f2989035225609f08058ccfa3d0f940febe31a2f3c951f6dadcc7ee9007dff81504b0fcd6d7cf59996efdc33d92bf7f9f8f60000000000000000000000000000000000000000000000000000000000000009", + "Expected": "1dbad7d39dbc56379f78fac1bca147dc8e66de1b9d183c7b167351bfe0aeab742cd757d51289cd8dbd0acf9e673ad67d0f0a89f912af47ed1be53664f5692575", + "Name": "cdetrio4", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "1a87b0584ce92f4593d161480614f2989035225609f08058ccfa3d0f940febe31a2f3c951f6dadcc7ee9007dff81504b0fcd6d7cf59996efdc33d92bf7f9f8f60000000000000000000000000000000000000000000000000000000000000001", + "Expected": "1a87b0584ce92f4593d161480614f2989035225609f08058ccfa3d0f940febe31a2f3c951f6dadcc7ee9007dff81504b0fcd6d7cf59996efdc33d92bf7f9f8f6", + "Name": "cdetrio5", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7cffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + "Expected": "29e587aadd7c06722aabba753017c093f70ba7eb1f1c0104ec0564e7e3e21f6022b1143f6a41008e7755c71c3d00b6b915d386de21783ef590486d8afa8453b1", + "Name": "cdetrio6", + "Gas": 6000, + "NoBenchmark": false + }, + { + "Input": "17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7c30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000000", + "Expected": "17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa92e83f8d734803fc370eba25ed1f6b8768bd6d83887b87165fc2434fe11a830cb", + "Name": "cdetrio7", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7c0000000000000000000000000000000100000000000000000000000000000000", + "Expected": "221a3577763877920d0d14a91cd59b9479f83b87a653bb41f82a3f6f120cea7c2752c7f64cdd7f0e494bff7b60419f242210f2026ed2ec70f89f78a4c56a1f15", + "Name": "cdetrio8", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7c0000000000000000000000000000000000000000000000000000000000000009", + "Expected": "228e687a379ba154554040f8821f4e41ee2be287c201aa9c3bc02c9dd12f1e691e0fd6ee672d04cfd924ed8fdc7ba5f2d06c53c1edc30f65f2af5a5b97f0a76a", + "Name": "cdetrio9", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7c0000000000000000000000000000000000000000000000000000000000000001", + "Expected": "17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7c", + "Name": "cdetrio10", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": 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"039730ea8dff1254c0fee9c0ea777d29a9c710b7e616683f194f18c43b43b869073a5ffcc6fc7a28c30723d6e58ce577356982d65b833a5a5c15bf9024b43d980000000000000000000000000000000100000000000000000000000000000000", + "Expected": "1071b63011e8c222c5a771dfa03c2e11aac9666dd097f2c620852c3951a4376a2f46fe2f73e1cf310a168d56baa5575a8319389d7bfa6b29ee2d908305791434", + "Name": "cdetrio13", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "039730ea8dff1254c0fee9c0ea777d29a9c710b7e616683f194f18c43b43b869073a5ffcc6fc7a28c30723d6e58ce577356982d65b833a5a5c15bf9024b43d980000000000000000000000000000000000000000000000000000000000000009", + "Expected": "19f75b9dd68c080a688774a6213f131e3052bd353a304a189d7a2ee367e3c2582612f545fb9fc89fde80fd81c68fc7dcb27fea5fc124eeda69433cf5c46d2d7f", + "Name": "cdetrio14", + "Gas": 6000, + "NoBenchmark": true + }, + { + "Input": "039730ea8dff1254c0fee9c0ea777d29a9c710b7e616683f194f18c43b43b869073a5ffcc6fc7a28c30723d6e58ce577356982d65b833a5a5c15bf9024b43d980000000000000000000000000000000000000000000000000000000000000001", + "Expected": "039730ea8dff1254c0fee9c0ea777d29a9c710b7e616683f194f18c43b43b869073a5ffcc6fc7a28c30723d6e58ce577356982d65b833a5a5c15bf9024b43d98", + "Name": "cdetrio15", + "Gas": 6000, + "NoBenchmark": true + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/ecRecover.json b/core/vm/testdata/precompiles/ecRecover.json new file mode 100644 index 0000000000..4911d6157e --- /dev/null +++ b/core/vm/testdata/precompiles/ecRecover.json @@ -0,0 +1,37 @@ +[ + { + "Input": "a8b53bdf3306a35a7103ab5504a0c9b492295564b6202b1942a84ef300107281000000000000000000000000000000000000000000000000000000000000001b307835653165303366353363653138623737326363623030393366663731663366353366356337356237346463623331613835616138623838393262346538621122334455667788991011121314151617181920212223242526272829303132", + "Expected": "", + "Gas": 3000, + "Name": "CallEcrecoverUnrecoverableKey", + "NoBenchmark": false + }, + { + "Input": "18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c000000000000000000000000000000000000000000000000000000000000001c73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549", + "Expected": "000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", + "Gas": 3000, + "Name": "ValidKey", + "NoBenchmark": false + }, + { + "Input": "18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c100000000000000000000000000000000000000000000000000000000000001c73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549", + "Expected": "", + "Gas": 3000, + "Name": "InvalidHighV-bits-1", + "NoBenchmark": false + }, + { + "Input": "18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c000000000000000000000000000000000000001000000000000000000000001c73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549", + "Expected": "", + "Gas": 3000, + "Name": "InvalidHighV-bits-2", + "NoBenchmark": false + }, + { + "Input": "18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c000000000000000000000000000000000000001000000000000000000000011c73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549", + "Expected": "", + "Gas": 3000, + "Name": "InvalidHighV-bits-3", + "NoBenchmark": false + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blake2f.json b/core/vm/testdata/precompiles/fail-blake2f.json new file mode 100644 index 0000000000..70835aa5b0 --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blake2f.json @@ -0,0 +1,22 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "vector 0: empty input" + }, + { + "Input": "00000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001", + "ExpectedError": "invalid input length", + "Name": "vector 1: less than 213 bytes input" + }, + { + "Input": "000000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001", + "ExpectedError": "invalid input length", + "Name": "vector 2: more than 213 bytes input" + }, + { + "Input": "0000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000002", + "ExpectedError": "invalid final flag", + "Name": "vector 3: malformed final block indicator flag" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsG1Add.json b/core/vm/testdata/precompiles/fail-blsG1Add.json new file mode 100644 index 0000000000..e58ec0e90e --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsG1Add.json @@ -0,0 +1,32 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_g1add_empty_input" + }, + { + "Input": "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", + "ExpectedError": "invalid input length", + "Name": "bls_g1add_short_input" + }, + { + "Input": "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", + "ExpectedError": "invalid input length", + "Name": "bls_g1add_large_input" + }, + { + "Input": "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", + "ExpectedError": "invalid field element top bytes", + "Name": "bls_g1add_violate_top_bytes" + }, + { + "Input": "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", + "ExpectedError": "must be less than modulus", + "Name": "bls_g1add_invalid_field_element" + }, + { + "Input": "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", + "ExpectedError": "point is not on curve", + "Name": "bls_g1add_point_not_on_curve" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsG1Mul.json b/core/vm/testdata/precompiles/fail-blsG1Mul.json new file mode 100644 index 0000000000..acb8228aaa --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsG1Mul.json @@ -0,0 +1,32 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_g1mul_empty_input" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb00000000000000000000000000000008b3f481e3aaa0f1a09e30ed741d8ae4fcf5e095d5d00af600db18cb2c04b3edd03cc744a2888ae40caa232946c5e7e10000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "invalid input length", + "Name": "bls_g1mul_short_input" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb000000000000000000000000000000000008b3f481e3aaa0f1a09e30ed741d8ae4fcf5e095d5d00af600db18cb2c04b3edd03cc744a2888ae40caa232946c5e7e10000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "invalid input length", + "Name": "bls_g1mul_large_input" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb0000000000000000000000000000000108b3f481e3aaa0f1a09e30ed741d8ae4fcf5e095d5d00af600db18cb2c04b3edd03cc744a2888ae40caa232946c5e7e10000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "invalid field element top bytes", + "Name": "bls_g1mul_violate_top_bytes" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb000000000000000000000000000000001a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac0000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "must be less than modulus", + "Name": "bls_g1mul_invalid_field_element" + }, + { + "Input": "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001", + "ExpectedError": "point is not on curve", + "Name": "bls_g1mul_point_not_on_curve" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsG1MultiExp.json b/core/vm/testdata/precompiles/fail-blsG1MultiExp.json new file mode 100644 index 0000000000..2cd28bd3b5 --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsG1MultiExp.json @@ -0,0 +1,32 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_g1multiexp_empty_input" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb00000000000000000000000000000008b3f481e3aaa0f1a09e30ed741d8ae4fcf5e095d5d00af600db18cb2c04b3edd03cc744a2888ae40caa232946c5e7e10000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "invalid input length", + "Name": "bls_g1multiexp_short_input" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb000000000000000000000000000000000008b3f481e3aaa0f1a09e30ed741d8ae4fcf5e095d5d00af600db18cb2c04b3edd03cc744a2888ae40caa232946c5e7e10000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "invalid input length", + "Name": "bls_g1multiexp_large_input" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb000000000000000000000000000000001a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac0000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "must be less than modulus", + "Name": "bls_g1multiexp_invalid_field_element" + }, + { + "Input": "0000000000000000000000000000000017f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb0000000000000000000000000000000108b3f481e3aaa0f1a09e30ed741d8ae4fcf5e095d5d00af600db18cb2c04b3edd03cc744a2888ae40caa232946c5e7e10000000000000000000000000000000000000000000000000000000000000007", + "ExpectedError": "invalid field element top bytes", + "Name": "bls_g1multiexp_violate_top_bytes" + }, + { + "Input": "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001", + "ExpectedError": "point is not on curve", + "Name": "bls_g1multiexp_point_not_on_curve" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsG2Add.json b/core/vm/testdata/precompiles/fail-blsG2Add.json new file mode 100644 index 0000000000..b1fe9d5b8d --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsG2Add.json @@ -0,0 +1,32 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_g2add_empty_input" + }, + { + "Input": "00000000000000000000000000000000024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb80000000000000000000000000000000013e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e000000000000000000000000000000000ce5d527727d6e118cc9cdc6da2e351aadfd9baa8cbdd3a76d429a695160d12c923ac9cc3baca289e193548608b828010000000000000000000000000000000606c4a02ea734cc32acd2b02bc28b99cb3e287e85a763af267492ab572e99ab3f370d275cec1da1aaa9075ff05f79be00000000000000000000000000000000024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb80000000000000000000000000000000013e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e000000000000000000000000000000000ce5d527727d6e118cc9cdc6da2e351aadfd9baa8cbdd3a76d429a695160d12c923ac9cc3baca289e193548608b82801000000000000000000000000000000000606c4a02ea734cc32acd2b02bc28b99cb3e287e85a763af267492ab572e99ab3f370d275cec1da1aaa9075ff05f79be", + "ExpectedError": "invalid input length", + "Name": "bls_g2add_short_input" + }, + { + "Input": "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", + "ExpectedError": "invalid input length", + "Name": "bls_g2add_large_input" + }, + { + "Input": "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", + "ExpectedError": "invalid field element top bytes", + "Name": "bls_g2add_violate_top_bytes" + }, + { + "Input": "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", + "ExpectedError": "must be less than modulus", + "Name": "bls_g2add_invalid_field_element" + }, + { + "Input": 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+ "ExpectedError": "point is not on curve", + "Name": "bls_g2add_point_not_on_curve" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsG2Mul.json b/core/vm/testdata/precompiles/fail-blsG2Mul.json new file mode 100644 index 0000000000..c2f0b89c8a --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsG2Mul.json @@ -0,0 +1,32 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_g2mul_empty_input" + }, + { + "Input": "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", + "ExpectedError": "invalid input length", + "Name": "bls_g2mul_short_input" + }, + { + "Input": "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", + "ExpectedError": "invalid input length", + "Name": "bls_g2mul_large_input" + }, + { + "Input": 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"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", + "ExpectedError": "must be less than modulus", + "Name": "bls_g2mul_invalid_field_element" + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001", + "ExpectedError": "point is not on curve", + "Name": "bls_g2mul_point_not_on_curve" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsG2MultiExp.json b/core/vm/testdata/precompiles/fail-blsG2MultiExp.json new file mode 100644 index 0000000000..437f8dfca5 --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsG2MultiExp.json @@ -0,0 +1,32 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_g2multiexp_empty_input" + }, + { + "Input": "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", + "ExpectedError": "invalid input length", + "Name": "bls_g2multiexp_short_input" + }, + { + "Input": 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"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", + "ExpectedError": "invalid field element top bytes", + "Name": "bls_g2multiexp_violate_top_bytes" + }, + { + "Input": "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", + "ExpectedError": "must be less than modulus", + "Name": "bls_g2multiexp_invalid_field_element" + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001", + "ExpectedError": "point is not on curve", + "Name": "bls_g2multiexp_point_not_on_curve" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsMapG1.json b/core/vm/testdata/precompiles/fail-blsMapG1.json new file mode 100644 index 0000000000..8550269f12 --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsMapG1.json @@ -0,0 +1,22 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_mapg1_empty_input" + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", + "ExpectedError": "invalid input length", + "Name": "bls_mapg1_short_input" + }, + { + "Input": "00000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", + "ExpectedError": "invalid field element top bytes", + "Name": "bls_mapg1_top_bytes" + }, + { + "Input": "000000000000000000000000000000001a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac", + "ExpectedError": "must be less than modulus", + "Name": "bls_mapg1_invalid_fq_element" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsMapG2.json b/core/vm/testdata/precompiles/fail-blsMapG2.json new file mode 100644 index 0000000000..397a608b0a --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsMapG2.json @@ -0,0 +1,22 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_mapg2_empty_input" + }, + { + "Input": "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", + "ExpectedError": "invalid input length", + "Name": "bls_mapg2_short_input" + }, + { + "Input": "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", + "ExpectedError": "invalid field element top bytes", + "Name": "bls_mapg2_top_bytes" + }, + { + "Input": "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac", + "ExpectedError": "must be less than modulus", + "Name": "bls_mapg2_invalid_fq_element" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/fail-blsPairing.json b/core/vm/testdata/precompiles/fail-blsPairing.json new file mode 100644 index 0000000000..084e55635c --- /dev/null +++ b/core/vm/testdata/precompiles/fail-blsPairing.json @@ -0,0 +1,42 @@ +[ + { + "Input": "", + "ExpectedError": "invalid input length", + "Name": "bls_pairing_empty_input" + }, + { + "Input": 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+ "ExpectedError": "invalid input length", + "Name": "bls_pairing_extra_data" + }, + { + "Input": 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+ "ExpectedError": "must be less than modulus", + "Name": "bls_pairing_invalid_field_element" + }, + { + "Input": 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+ "ExpectedError": "invalid field element top bytes", + "Name": "bls_pairing_top_bytes" + }, + { + "Input": 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+ "ExpectedError": "point is not on curve", + "Name": "bls_pairing_g1_not_on_curve" + }, + { + "Input": 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+ "ExpectedError": "point is not on curve", + "Name": "bls_pairing_g2_not_on_curve" + }, + { + "Input": 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+ "ExpectedError": "g1 point is not on correct subgroup", + "Name": "bls_pairing_g1_not_in_correct_subgroup" + }, + { + "Input": "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", + "ExpectedError": "g2 point is not on correct subgroup", + "Name": "bls_pairing_g2_not_in_correct_subgroup" + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/modexp.json b/core/vm/testdata/precompiles/modexp.json new file mode 100644 index 0000000000..4550eb9138 --- /dev/null +++ b/core/vm/testdata/precompiles/modexp.json @@ -0,0 +1,121 @@ +[ + { + "Input": "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002003fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2efffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", + "Expected": "0000000000000000000000000000000000000000000000000000000000000001", + "Name": "eip_example1", + "Gas": 13056, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000020fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2efffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", + "Expected": "0000000000000000000000000000000000000000000000000000000000000000", + "Name": "eip_example2", + "Gas": 13056, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000040e09ad9675465c53a109fac66a445c91b292d2bb2c5268addb30cd82f80fcb0033ff97c80a5fc6f39193ae969c6ede6710a6b7ac27078a06d90ef1c72e5c85fb502fc9e1f6beb81516545975218075ec2af118cd8798df6e08a147c60fd6095ac2bb02c2908cf4dd7c81f11c289e4bce98f3553768f392a80ce22bf5c4f4a248c6b", + "Expected": "60008f1614cc01dcfb6bfb09c625cf90b47d4468db81b5f8b7a39d42f332eab9b2da8f2d95311648a8f243f4bb13cfb3d8f7f2a3c014122ebb3ed41b02783adc", + "Name": "nagydani-1-square", + "Gas": 204, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000040e09ad9675465c53a109fac66a445c91b292d2bb2c5268addb30cd82f80fcb0033ff97c80a5fc6f39193ae969c6ede6710a6b7ac27078a06d90ef1c72e5c85fb503fc9e1f6beb81516545975218075ec2af118cd8798df6e08a147c60fd6095ac2bb02c2908cf4dd7c81f11c289e4bce98f3553768f392a80ce22bf5c4f4a248c6b", + "Expected": "4834a46ba565db27903b1c720c9d593e84e4cbd6ad2e64b31885d944f68cd801f92225a8961c952ddf2797fa4701b330c85c4b363798100b921a1a22a46a7fec", + "Name": "nagydani-1-qube", + "Gas": 204, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000040e09ad9675465c53a109fac66a445c91b292d2bb2c5268addb30cd82f80fcb0033ff97c80a5fc6f39193ae969c6ede6710a6b7ac27078a06d90ef1c72e5c85fb5010001fc9e1f6beb81516545975218075ec2af118cd8798df6e08a147c60fd6095ac2bb02c2908cf4dd7c81f11c289e4bce98f3553768f392a80ce22bf5c4f4a248c6b", + "Expected": "c36d804180c35d4426b57b50c5bfcca5c01856d104564cd513b461d3c8b8409128a5573e416d0ebe38f5f736766d9dc27143e4da981dfa4d67f7dc474cbee6d2", + "Name": "nagydani-1-pow0x10001", + "Gas": 3276, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "981dd99c3b113fae3e3eaa9435c0dc96779a23c12a53d1084b4f67b0b053a27560f627b873e3f16ad78f28c94f14b6392def26e4d8896c5e3c984e50fa0b3aa44f1da78b913187c6128baa9340b1e9c9a0fd02cb78885e72576da4a8f7e5a113e173a7a2889fde9d407bd9f06eb05bc8fc7b4229377a32941a02bf4edcc06d70", + "Name": "nagydani-2-square", + "Gas": 665, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "d89ceb68c32da4f6364978d62aaa40d7b09b59ec61eb3c0159c87ec3a91037f7dc6967594e530a69d049b64adfa39c8fa208ea970cfe4b7bcd359d345744405afe1cbf761647e32b3184c7fbe87cee8c6c7ff3b378faba6c68b83b6889cb40f1603ee68c56b4c03d48c595c826c041112dc941878f8c5be828154afd4a16311f", + "Name": "nagydani-2-qube", + "Gas": 665, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "ad85e8ef13fd1dd46eae44af8b91ad1ccae5b7a1c92944f92a19f21b0b658139e0cabe9c1f679507c2de354bf2c91ebd965d1e633978a830d517d2f6f8dd5fd58065d58559de7e2334a878f8ec6992d9b9e77430d4764e863d77c0f87beede8f2f7f2ab2e7222f85cc9d98b8467f4bb72e87ef2882423ebdb6daf02dddac6db2", + "Name": "nagydani-2-pow0x10001", + "Gas": 10649, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000100c9130579f243e12451760976261416413742bd7c91d39ae087f46794062b8c239f2a74abf3918605a0e046a7890e049475ba7fbb78f5de6490bd22a710cc04d30088179a919d86c2da62cf37f59d8f258d2310d94c24891be2d7eeafaa32a8cb4b0cfe5f475ed778f45907dc8916a73f03635f233f7a77a00a3ec9ca6761a5bbd558a2318ecd0caa1c5016691523e7e1fa267dd35e70c66e84380bdcf7c0582f540174e572c41f81e93da0b757dff0b0fe23eb03aa19af0bdec3afb474216febaacb8d0381e631802683182b0fe72c28392539850650b70509f54980241dc175191a35d967288b532a7a8223ce2440d010615f70df269501944d4ec16fe4a3cb02d7a85909174757835187cb52e71934e6c07ef43b4c46fc30bbcd0bc72913068267c54a4aabebb493922492820babdeb7dc9b1558fcf7bd82c37c82d3147e455b623ab0efa752fe0b3a67ca6e4d126639e645a0bf417568adbb2a6a4eef62fa1fa29b2a5a43bebea1f82193a7dd98eb483d09bb595af1fa9c97c7f41f5649d976aee3e5e59e2329b43b13bea228d4a93f16ba139ccb511de521ffe747aa2eca664f7c9e33da59075cc335afcd2bf3ae09765f01ab5a7c3e3938ec168b74724b5074247d200d9970382f683d6059b94dbc336603d1dfee714e4b447ac2fa1d99ecb4961da2854e03795ed758220312d101e1e3d87d5313a6d052aebde75110363d", + "Expected": "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", + "Name": "nagydani-3-square", + "Gas": 1894, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-3-qube", + "Gas": 1894, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "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", + "Name": "nagydani-3-pow0x10001", + "Gas": 30310, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "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", + "Name": "nagydani-4-square", + "Gas": 5580, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-4-qube", + "Gas": 5580, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-4-pow0x10001", + "Gas": 89292, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "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", + "Name": "nagydani-5-square", + "Gas": 17868, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "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", + "Name": "nagydani-5-qube", + "Gas": 17868, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "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", + "Name": "nagydani-5-pow0x10001", + "Gas": 285900, + "NoBenchmark": false + } +] \ No newline at end of file diff --git a/core/vm/testdata/precompiles/modexp_eip2565.json b/core/vm/testdata/precompiles/modexp_eip2565.json new file mode 100644 index 0000000000..c55441439e --- /dev/null +++ b/core/vm/testdata/precompiles/modexp_eip2565.json @@ -0,0 +1,121 @@ +[ + { + "Input": "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002003fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2efffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", + "Expected": "0000000000000000000000000000000000000000000000000000000000000001", + "Name": "eip_example1", + "Gas": 1360, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000020fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2efffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", + "Expected": "0000000000000000000000000000000000000000000000000000000000000000", + "Name": "eip_example2", + "Gas": 1360, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000040e09ad9675465c53a109fac66a445c91b292d2bb2c5268addb30cd82f80fcb0033ff97c80a5fc6f39193ae969c6ede6710a6b7ac27078a06d90ef1c72e5c85fb502fc9e1f6beb81516545975218075ec2af118cd8798df6e08a147c60fd6095ac2bb02c2908cf4dd7c81f11c289e4bce98f3553768f392a80ce22bf5c4f4a248c6b", + "Expected": "60008f1614cc01dcfb6bfb09c625cf90b47d4468db81b5f8b7a39d42f332eab9b2da8f2d95311648a8f243f4bb13cfb3d8f7f2a3c014122ebb3ed41b02783adc", + "Name": "nagydani-1-square", + "Gas": 200, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000040e09ad9675465c53a109fac66a445c91b292d2bb2c5268addb30cd82f80fcb0033ff97c80a5fc6f39193ae969c6ede6710a6b7ac27078a06d90ef1c72e5c85fb503fc9e1f6beb81516545975218075ec2af118cd8798df6e08a147c60fd6095ac2bb02c2908cf4dd7c81f11c289e4bce98f3553768f392a80ce22bf5c4f4a248c6b", + "Expected": "4834a46ba565db27903b1c720c9d593e84e4cbd6ad2e64b31885d944f68cd801f92225a8961c952ddf2797fa4701b330c85c4b363798100b921a1a22a46a7fec", + "Name": "nagydani-1-qube", + "Gas": 200, + "NoBenchmark": false + }, + { + "Input": "000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000040e09ad9675465c53a109fac66a445c91b292d2bb2c5268addb30cd82f80fcb0033ff97c80a5fc6f39193ae969c6ede6710a6b7ac27078a06d90ef1c72e5c85fb5010001fc9e1f6beb81516545975218075ec2af118cd8798df6e08a147c60fd6095ac2bb02c2908cf4dd7c81f11c289e4bce98f3553768f392a80ce22bf5c4f4a248c6b", + "Expected": "c36d804180c35d4426b57b50c5bfcca5c01856d104564cd513b461d3c8b8409128a5573e416d0ebe38f5f736766d9dc27143e4da981dfa4d67f7dc474cbee6d2", + "Name": "nagydani-1-pow0x10001", + "Gas": 341, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "981dd99c3b113fae3e3eaa9435c0dc96779a23c12a53d1084b4f67b0b053a27560f627b873e3f16ad78f28c94f14b6392def26e4d8896c5e3c984e50fa0b3aa44f1da78b913187c6128baa9340b1e9c9a0fd02cb78885e72576da4a8f7e5a113e173a7a2889fde9d407bd9f06eb05bc8fc7b4229377a32941a02bf4edcc06d70", + "Name": "nagydani-2-square", + "Gas": 200, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "d89ceb68c32da4f6364978d62aaa40d7b09b59ec61eb3c0159c87ec3a91037f7dc6967594e530a69d049b64adfa39c8fa208ea970cfe4b7bcd359d345744405afe1cbf761647e32b3184c7fbe87cee8c6c7ff3b378faba6c68b83b6889cb40f1603ee68c56b4c03d48c595c826c041112dc941878f8c5be828154afd4a16311f", + "Name": "nagydani-2-qube", + "Gas": 200, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "ad85e8ef13fd1dd46eae44af8b91ad1ccae5b7a1c92944f92a19f21b0b658139e0cabe9c1f679507c2de354bf2c91ebd965d1e633978a830d517d2f6f8dd5fd58065d58559de7e2334a878f8ec6992d9b9e77430d4764e863d77c0f87beede8f2f7f2ab2e7222f85cc9d98b8467f4bb72e87ef2882423ebdb6daf02dddac6db2", + "Name": "nagydani-2-pow0x10001", + "Gas": 1365, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-3-square", + "Gas": 341, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-3-qube", + "Gas": 341, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-3-pow0x10001", + "Gas": 5461, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": 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+ "Name": "nagydani-4-square", + "Gas": 1365, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-4-qube", + "Gas": 1365, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "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", + "Name": "nagydani-4-pow0x10001", + "Gas": 21845, + "NoBenchmark": false + }, + { + "Input": "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", + "Expected": "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", + "Name": "nagydani-5-square", + "Gas": 5461, + "NoBenchmark": false + }, + { + "Input": 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+ "Expected": "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", + "Name": "nagydani-5-qube", + "Gas": 5461, + "NoBenchmark": false + }, + { + "Input": 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\ No newline at end of file diff --git a/eth/api.go b/eth/api.go new file mode 100644 index 0000000000..3ccf78cf80 --- /dev/null +++ b/eth/api.go @@ -0,0 +1,509 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package eth + +import ( + "compress/gzip" + "context" + "errors" + "fmt" + "io" + "os" + "strings" + "time" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/internal/ethapi" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// PublicEthereumAPI provides an API to access Ethereum full node-related +// information. +type PublicEthereumAPI struct { + e *Ethereum +} + +// NewPublicEthereumAPI creates a new Ethereum protocol API for full nodes. +func NewPublicEthereumAPI(e *Ethereum) *PublicEthereumAPI { + return &PublicEthereumAPI{e} +} + +// Etherbase is the address that mining rewards will be send to +func (api *PublicEthereumAPI) Etherbase() (common.Address, error) { + return api.e.Etherbase() +} + +// Coinbase is the address that mining rewards will be send to (alias for Etherbase) +func (api *PublicEthereumAPI) Coinbase() (common.Address, error) { + return api.Etherbase() +} + +// PrivateAdminAPI is the collection of Ethereum full node-related APIs +// exposed over the private admin endpoint. +type PrivateAdminAPI struct { + eth *Ethereum +} + +// NewPrivateAdminAPI creates a new API definition for the full node private +// admin methods of the Ethereum service. +func NewPrivateAdminAPI(eth *Ethereum) *PrivateAdminAPI { + return &PrivateAdminAPI{eth: eth} +} + +// ExportChain exports the current blockchain into a local file, +// or a range of blocks if first and last are non-nil +func (api *PrivateAdminAPI) ExportChain(file string, first *uint64, last *uint64) (bool, error) { + if first == nil && last != nil { + return false, errors.New("last cannot be specified without first") + } + if first != nil && last == nil { + head := api.eth.BlockChain().CurrentHeader().Number.Uint64() + last = &head + } + if _, err := os.Stat(file); err == nil { + // File already exists. Allowing overwrite could be a DoS vecotor, + // since the 'file' may point to arbitrary paths on the drive + return false, errors.New("location would overwrite an existing file") + } + // Make sure we can create the file to export into + out, err := os.OpenFile(file, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.ModePerm) + if err != nil { + return false, err + } + defer out.Close() + + var writer io.Writer = out + if strings.HasSuffix(file, ".gz") { + writer = gzip.NewWriter(writer) + defer writer.(*gzip.Writer).Close() + } + + // Export the blockchain + if first != nil { + if err := api.eth.BlockChain().ExportN(writer, *first, *last); err != nil { + return false, err + } + } else if err := api.eth.BlockChain().Export(writer); err != nil { + return false, err + } + return true, nil +} + +func hasAllBlocks(chain *core.BlockChain, bs []*types.Block) bool { + for _, b := range bs { + if !chain.HasBlock(b.Hash(), b.NumberU64()) { + return false + } + } + + return true +} + +// ImportChain imports a blockchain from a local file. +func (api *PrivateAdminAPI) ImportChain(file string) (bool, error) { + // Make sure the can access the file to import + in, err := os.Open(file) + if err != nil { + return false, err + } + defer in.Close() + + var reader io.Reader = in + if strings.HasSuffix(file, ".gz") { + if reader, err = gzip.NewReader(reader); err != nil { + return false, err + } + } + + // Run actual the import in pre-configured batches + stream := rlp.NewStream(reader, 0) + + blocks, index := make([]*types.Block, 0, 2500), 0 + for batch := 0; ; batch++ { + // Load a batch of blocks from the input file + for len(blocks) < cap(blocks) { + block := new(types.Block) + if err := stream.Decode(block); err == io.EOF { + break + } else if err != nil { + return false, fmt.Errorf("block %d: failed to parse: %v", index, err) + } + blocks = append(blocks, block) + index++ + } + if len(blocks) == 0 { + break + } + + if hasAllBlocks(api.eth.BlockChain(), blocks) { + blocks = blocks[:0] + continue + } + // Import the batch and reset the buffer + if _, err := api.eth.BlockChain().InsertChain(blocks); err != nil { + return false, fmt.Errorf("batch %d: failed to insert: %v", batch, err) + } + blocks = blocks[:0] + } + return true, nil +} + +// PublicDebugAPI is the collection of Ethereum full node APIs exposed +// over the public debugging endpoint. +type PublicDebugAPI struct { + eth *Ethereum +} + +// NewPublicDebugAPI creates a new API definition for the full node- +// related public debug methods of the Ethereum service. +func NewPublicDebugAPI(eth *Ethereum) *PublicDebugAPI { + return &PublicDebugAPI{eth: eth} +} + +// DumpBlock retrieves the entire state of the database at a given block. +func (api *PublicDebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error) { + opts := &state.DumpConfig{ + OnlyWithAddresses: true, + Max: AccountRangeMaxResults, // Sanity limit over RPC + } + var block *types.Block + if blockNr.IsAccepted() { + block = api.eth.LastAcceptedBlock() + } else { + block = api.eth.blockchain.GetBlockByNumber(uint64(blockNr)) + } + if block == nil { + return state.Dump{}, fmt.Errorf("block #%d not found", blockNr) + } + stateDb, err := api.eth.BlockChain().StateAt(block.Root()) + if err != nil { + return state.Dump{}, err + } + return stateDb.RawDump(opts), nil +} + +// PrivateDebugAPI is the collection of Ethereum full node APIs exposed over +// the private debugging endpoint. +type PrivateDebugAPI struct { + eth *Ethereum +} + +// NewPrivateDebugAPI creates a new API definition for the full node-related +// private debug methods of the Ethereum service. +func NewPrivateDebugAPI(eth *Ethereum) *PrivateDebugAPI { + return &PrivateDebugAPI{eth: eth} +} + +// Preimage is a debug API function that returns the preimage for a sha3 hash, if known. +func (api *PrivateDebugAPI) Preimage(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) { + if preimage := rawdb.ReadPreimage(api.eth.ChainDb(), hash); preimage != nil { + return preimage, nil + } + return nil, errors.New("unknown preimage") +} + +// BadBlockArgs represents the entries in the list returned when bad blocks are queried. +type BadBlockArgs struct { + Hash common.Hash `json:"hash"` + Block map[string]interface{} `json:"block"` + RLP string `json:"rlp"` +} + +// GetBadBlocks returns a list of the last 'bad blocks' that the client has seen on the network +// and returns them as a JSON list of block-hashes +func (api *PrivateDebugAPI) GetBadBlocks(ctx context.Context) ([]*BadBlockArgs, error) { + var ( + err error + blocks = api.eth.BlockChain().BadBlocks() + results = make([]*BadBlockArgs, 0, len(blocks)) + ) + for _, block := range blocks { + var ( + blockRlp string + blockJSON map[string]interface{} + ) + if rlpBytes, err := rlp.EncodeToBytes(block); err != nil { + blockRlp = err.Error() // Hacky, but hey, it works + } else { + blockRlp = fmt.Sprintf("0x%x", rlpBytes) + } + if blockJSON, err = ethapi.RPCMarshalBlock(block, true, true, api.eth.APIBackend.ChainConfig()); err != nil { + blockJSON = map[string]interface{}{"error": err.Error()} + } + results = append(results, &BadBlockArgs{ + Hash: block.Hash(), + RLP: blockRlp, + Block: blockJSON, + }) + } + return results, nil +} + +// AccountRangeMaxResults is the maximum number of results to be returned per call +const AccountRangeMaxResults = 256 + +// AccountRange enumerates all accounts in the given block and start point in paging request +func (api *PublicDebugAPI) AccountRange(blockNrOrHash rpc.BlockNumberOrHash, start []byte, maxResults int, nocode, nostorage, incompletes bool) (state.IteratorDump, error) { + var stateDb *state.StateDB + var err error + + if number, ok := blockNrOrHash.Number(); ok { + var block *types.Block + if number.IsAccepted() { + block = api.eth.LastAcceptedBlock() + } else { + block = api.eth.blockchain.GetBlockByNumber(uint64(number)) + } + if block == nil { + return state.IteratorDump{}, fmt.Errorf("block #%d not found", number) + } + stateDb, err = api.eth.BlockChain().StateAt(block.Root()) + if err != nil { + return state.IteratorDump{}, err + } + } else if hash, ok := blockNrOrHash.Hash(); ok { + block := api.eth.blockchain.GetBlockByHash(hash) + if block == nil { + return state.IteratorDump{}, fmt.Errorf("block %s not found", hash.Hex()) + } + stateDb, err = api.eth.BlockChain().StateAt(block.Root()) + if err != nil { + return state.IteratorDump{}, err + } + } else { + return state.IteratorDump{}, errors.New("either block number or block hash must be specified") + } + + opts := &state.DumpConfig{ + SkipCode: nocode, + SkipStorage: nostorage, + OnlyWithAddresses: !incompletes, + Start: start, + Max: uint64(maxResults), + } + if maxResults > AccountRangeMaxResults || maxResults <= 0 { + opts.Max = AccountRangeMaxResults + } + return stateDb.IteratorDump(opts), nil +} + +// StorageRangeResult is the result of a debug_storageRangeAt API call. +type StorageRangeResult struct { + Storage storageMap `json:"storage"` + NextKey *common.Hash `json:"nextKey"` // nil if Storage includes the last key in the trie. +} + +type storageMap map[common.Hash]storageEntry + +type storageEntry struct { + Key *common.Hash `json:"key"` + Value common.Hash `json:"value"` +} + +// StorageRangeAt returns the storage at the given block height and transaction index. +func (api *PrivateDebugAPI) StorageRangeAt(blockHash common.Hash, txIndex int, contractAddress common.Address, keyStart hexutil.Bytes, maxResult int) (StorageRangeResult, error) { + // Retrieve the block + block := api.eth.blockchain.GetBlockByHash(blockHash) + if block == nil { + return StorageRangeResult{}, fmt.Errorf("block %#x not found", blockHash) + } + _, _, statedb, err := api.eth.stateAtTransaction(block, txIndex, 0) + if err != nil { + return StorageRangeResult{}, err + } + st := statedb.StorageTrie(contractAddress) + if st == nil { + return StorageRangeResult{}, fmt.Errorf("account %x doesn't exist", contractAddress) + } + return storageRangeAt(st, keyStart, maxResult) +} + +func storageRangeAt(st state.Trie, start []byte, maxResult int) (StorageRangeResult, error) { + it := trie.NewIterator(st.NodeIterator(start)) + result := StorageRangeResult{Storage: storageMap{}} + for i := 0; i < maxResult && it.Next(); i++ { + _, content, _, err := rlp.Split(it.Value) + if err != nil { + return StorageRangeResult{}, err + } + e := storageEntry{Value: common.BytesToHash(content)} + if preimage := st.GetKey(it.Key); preimage != nil { + preimage := common.BytesToHash(preimage) + e.Key = &preimage + } + result.Storage[common.BytesToHash(it.Key)] = e + } + // Add the 'next key' so clients can continue downloading. + if it.Next() { + next := common.BytesToHash(it.Key) + result.NextKey = &next + } + return result, nil +} + +// GetModifiedAccountsByNumber returns all accounts that have changed between the +// two blocks specified. A change is defined as a difference in nonce, balance, +// code hash, or storage hash. +// +// With one parameter, returns the list of accounts modified in the specified block. +func (api *PrivateDebugAPI) GetModifiedAccountsByNumber(startNum uint64, endNum *uint64) ([]common.Address, error) { + var startBlock, endBlock *types.Block + + startBlock = api.eth.blockchain.GetBlockByNumber(startNum) + if startBlock == nil { + return nil, fmt.Errorf("start block %x not found", startNum) + } + + if endNum == nil { + endBlock = startBlock + startBlock = api.eth.blockchain.GetBlockByHash(startBlock.ParentHash()) + if startBlock == nil { + return nil, fmt.Errorf("block %x has no parent", endBlock.Number()) + } + } else { + endBlock = api.eth.blockchain.GetBlockByNumber(*endNum) + if endBlock == nil { + return nil, fmt.Errorf("end block %d not found", *endNum) + } + } + return api.getModifiedAccounts(startBlock, endBlock) +} + +// GetModifiedAccountsByHash returns all accounts that have changed between the +// two blocks specified. A change is defined as a difference in nonce, balance, +// code hash, or storage hash. +// +// With one parameter, returns the list of accounts modified in the specified block. +func (api *PrivateDebugAPI) GetModifiedAccountsByHash(startHash common.Hash, endHash *common.Hash) ([]common.Address, error) { + var startBlock, endBlock *types.Block + startBlock = api.eth.blockchain.GetBlockByHash(startHash) + if startBlock == nil { + return nil, fmt.Errorf("start block %x not found", startHash) + } + + if endHash == nil { + endBlock = startBlock + startBlock = api.eth.blockchain.GetBlockByHash(startBlock.ParentHash()) + if startBlock == nil { + return nil, fmt.Errorf("block %x has no parent", endBlock.Number()) + } + } else { + endBlock = api.eth.blockchain.GetBlockByHash(*endHash) + if endBlock == nil { + return nil, fmt.Errorf("end block %x not found", *endHash) + } + } + return api.getModifiedAccounts(startBlock, endBlock) +} + +func (api *PrivateDebugAPI) getModifiedAccounts(startBlock, endBlock *types.Block) ([]common.Address, error) { + if startBlock.Number().Uint64() >= endBlock.Number().Uint64() { + return nil, fmt.Errorf("start block height (%d) must be less than end block height (%d)", startBlock.Number().Uint64(), endBlock.Number().Uint64()) + } + triedb := api.eth.BlockChain().StateCache().TrieDB() + + oldTrie, err := trie.NewSecure(startBlock.Root(), triedb) + if err != nil { + return nil, err + } + newTrie, err := trie.NewSecure(endBlock.Root(), triedb) + if err != nil { + return nil, err + } + diff, _ := trie.NewDifferenceIterator(oldTrie.NodeIterator([]byte{}), newTrie.NodeIterator([]byte{})) + iter := trie.NewIterator(diff) + + var dirty []common.Address + for iter.Next() { + key := newTrie.GetKey(iter.Key) + if key == nil { + return nil, fmt.Errorf("no preimage found for hash %x", iter.Key) + } + dirty = append(dirty, common.BytesToAddress(key)) + } + return dirty, nil +} + +// GetAccessibleState returns the first number where the node has accessible +// state on disk. Note this being the post-state of that block and the pre-state +// of the next block. +// The (from, to) parameters are the sequence of blocks to search, which can go +// either forwards or backwards +func (api *PrivateDebugAPI) GetAccessibleState(from, to rpc.BlockNumber) (uint64, error) { + resolveNum := func(num rpc.BlockNumber) (uint64, error) { + // We don't have state for pending (-2), so treat it as latest + if num.Int64() < 0 { + block := api.eth.blockchain.CurrentBlock() + if block == nil { + return 0, fmt.Errorf("current block missing") + } + return block.NumberU64(), nil + } + return uint64(num.Int64()), nil + } + var ( + start uint64 + end uint64 + delta = int64(1) + lastLog time.Time + err error + ) + if start, err = resolveNum(from); err != nil { + return 0, err + } + if end, err = resolveNum(to); err != nil { + return 0, err + } + if start == end { + return 0, fmt.Errorf("from and to needs to be different") + } + if start > end { + delta = -1 + } + for i := int64(start); i != int64(end); i += delta { + if time.Since(lastLog) > 8*time.Second { + log.Info("Finding roots", "from", start, "to", end, "at", i) + lastLog = time.Now() + } + h := api.eth.BlockChain().GetHeaderByNumber(uint64(i)) + if h == nil { + return 0, fmt.Errorf("missing header %d", i) + } + if ok, _ := api.eth.ChainDb().Has(h.Root[:]); ok { + return uint64(i), nil + } + } + return 0, fmt.Errorf("No state found") +} diff --git a/eth/api_backend.go b/eth/api_backend.go new file mode 100644 index 0000000000..8745741e71 --- /dev/null +++ b/eth/api_backend.go @@ -0,0 +1,440 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package eth + +import ( + "context" + "errors" + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/bloombits" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/gasprice" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" +) + +var ( + ErrUnfinalizedData = errors.New("cannot query unfinalized data") + errExpired = errors.New("request expired") +) + +// EthAPIBackend implements ethapi.Backend for full nodes +type EthAPIBackend struct { + extRPCEnabled bool + allowUnprotectedTxs bool + eth *Ethereum + gpo *gasprice.Oracle +} + +// ChainConfig returns the active chain configuration. +func (b *EthAPIBackend) ChainConfig() *params.ChainConfig { + return b.eth.blockchain.Config() +} + +func (b *EthAPIBackend) GetVMConfig() *vm.Config { + return b.eth.blockchain.GetVMConfig() +} + +func (b *EthAPIBackend) CurrentBlock() *types.Block { + return b.eth.blockchain.CurrentBlock() +} + +func (b *EthAPIBackend) LastAcceptedBlock() *types.Block { + return b.eth.LastAcceptedBlock() +} + +func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) { + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, errExpired + } + // Treat requests for the pending, latest, or accepted block + // identically. + acceptedBlock := b.eth.LastAcceptedBlock() + if number.IsAccepted() { + return acceptedBlock.Header(), nil + } + + if !b.GetVMConfig().AllowUnfinalizedQueries && acceptedBlock != nil { + if number.Int64() > acceptedBlock.Number().Int64() { + return nil, ErrUnfinalizedData + } + } + + return b.eth.blockchain.GetHeaderByNumber(uint64(number)), nil +} + +func (b *EthAPIBackend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) { + if blockNr, ok := blockNrOrHash.Number(); ok { + return b.HeaderByNumber(ctx, blockNr) + } + if hash, ok := blockNrOrHash.Hash(); ok { + header := b.eth.blockchain.GetHeaderByHash(hash) + if header == nil { + return nil, errors.New("header for hash not found") + } + if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash { + return nil, errors.New("hash is not currently canonical") + } + return header, nil + } + return nil, errors.New("invalid arguments; neither block nor hash specified") +} + +func (b *EthAPIBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) { + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, errExpired + } + return b.eth.blockchain.GetHeaderByHash(hash), nil +} + +func (b *EthAPIBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) { + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, errExpired + } + // Treat requests for the pending, latest, or accepted block + // identically. + acceptedBlock := b.eth.LastAcceptedBlock() + if number.IsAccepted() { + return acceptedBlock, nil + } + + if !b.GetVMConfig().AllowUnfinalizedQueries && acceptedBlock != nil { + if number.Int64() > acceptedBlock.Number().Int64() { + return nil, ErrUnfinalizedData + } + } + + return b.eth.blockchain.GetBlockByNumber(uint64(number)), nil +} + +func (b *EthAPIBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) { + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, errExpired + } + return b.eth.blockchain.GetBlockByHash(hash), nil +} + +func (b *EthAPIBackend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) { + if blockNr, ok := blockNrOrHash.Number(); ok { + return b.BlockByNumber(ctx, blockNr) + } + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, errExpired + } + if hash, ok := blockNrOrHash.Hash(); ok { + header := b.eth.blockchain.GetHeaderByHash(hash) + if header == nil { + return nil, errors.New("header for hash not found") + } + if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash { + return nil, errors.New("hash is not currently canonical") + } + block := b.eth.blockchain.GetBlock(hash, header.Number.Uint64()) + if block == nil { + return nil, errors.New("header found, but block body is missing") + } + return block, nil + } + return nil, errors.New("invalid arguments; neither block nor hash specified") +} + +func (b *EthAPIBackend) BadBlocks() []*types.Block { + return b.eth.blockchain.BadBlocks() +} + +func (b *EthAPIBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts) { + return nil, nil +} + +func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) { + // Request the block by its number and retrieve its state + header, err := b.HeaderByNumber(ctx, number) + if err != nil { + return nil, nil, err + } + if header == nil { + return nil, nil, errors.New("header not found") + } + stateDb, err := b.eth.BlockChain().StateAt(header.Root) + return stateDb, header, err +} + +func (b *EthAPIBackend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) { + if blockNr, ok := blockNrOrHash.Number(); ok { + return b.StateAndHeaderByNumber(ctx, blockNr) + } + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, nil, errExpired + } + if hash, ok := blockNrOrHash.Hash(); ok { + header, err := b.HeaderByHash(ctx, hash) + if err != nil { + return nil, nil, err + } + if header == nil { + return nil, nil, errors.New("header for hash not found") + } + if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash { + return nil, nil, errors.New("hash is not currently canonical") + } + stateDb, err := b.eth.BlockChain().StateAt(header.Root) + return stateDb, header, err + } + return nil, nil, errors.New("invalid arguments; neither block nor hash specified") +} + +func (b *EthAPIBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) { + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, errExpired + } + return b.eth.blockchain.GetReceiptsByHash(hash), nil +} + +func (b *EthAPIBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) { + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return nil, errExpired + } + db := b.eth.ChainDb() + number := rawdb.ReadHeaderNumber(db, hash) + if number == nil { + return nil, errors.New("failed to get block number from hash") + } + logs := rawdb.ReadLogs(db, hash, *number) + if logs == nil { + return nil, errors.New("failed to get logs for block") + } + return logs, nil +} + +func (b *EthAPIBackend) GetTd(ctx context.Context, hash common.Hash) *big.Int { + if header := b.eth.blockchain.GetHeaderByHash(hash); header != nil { + return b.eth.blockchain.GetTd(hash, header.Number.Uint64()) + } + return nil +} + +func (b *EthAPIBackend) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header, vmConfig *vm.Config) (*vm.EVM, func() error, error) { + vmError := func() error { return nil } + if vmConfig == nil { + vmConfig = b.eth.blockchain.GetVMConfig() + } + txContext := core.NewEVMTxContext(msg) + context := core.NewEVMBlockContext(header, b.eth.BlockChain(), nil) + return vm.NewEVM(context, txContext, state, b.eth.blockchain.Config(), *vmConfig), vmError, nil +} + +func (b *EthAPIBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription { + return b.eth.BlockChain().SubscribeRemovedLogsEvent(ch) +} + +func (b *EthAPIBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription { + return b.eth.miner.SubscribePendingLogs(ch) +} + +func (b *EthAPIBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription { + return b.eth.BlockChain().SubscribeChainEvent(ch) +} + +func (b *EthAPIBackend) SubscribeChainAcceptedEvent(ch chan<- core.ChainEvent) event.Subscription { + return b.eth.BlockChain().SubscribeChainAcceptedEvent(ch) +} + +func (b *EthAPIBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription { + return b.eth.BlockChain().SubscribeChainHeadEvent(ch) +} + +func (b *EthAPIBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription { + return b.eth.BlockChain().SubscribeChainSideEvent(ch) +} + +func (b *EthAPIBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription { + return b.eth.BlockChain().SubscribeLogsEvent(ch) +} + +func (b *EthAPIBackend) SubscribeAcceptedLogsEvent(ch chan<- []*types.Log) event.Subscription { + return b.eth.BlockChain().SubscribeAcceptedLogsEvent(ch) +} + +func (b *EthAPIBackend) SubscribeAcceptedTransactionEvent(ch chan<- core.NewTxsEvent) event.Subscription { + return b.eth.BlockChain().SubscribeAcceptedTransactionEvent(ch) +} + +func (b *EthAPIBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error { + if deadline, exists := ctx.Deadline(); exists && time.Until(deadline) < 0 { + return errExpired + } + return b.eth.txPool.AddLocal(signedTx) +} + +func (b *EthAPIBackend) GetPoolTransactions() (types.Transactions, error) { + pending := b.eth.txPool.Pending(false) + var txs types.Transactions + for _, batch := range pending { + txs = append(txs, batch...) + } + return txs, nil +} + +func (b *EthAPIBackend) GetPoolTransaction(hash common.Hash) *types.Transaction { + return b.eth.txPool.Get(hash) +} + +func (b *EthAPIBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) { + tx, blockHash, blockNumber, index := rawdb.ReadTransaction(b.eth.ChainDb(), txHash) + + // Respond as if the transaction does not exist if it is not yet in an + // accepted block. We explicitly choose not to error here to avoid breaking + // expectations with clients (expect an empty response when a transaction + // does not exist). + acceptedBlock := b.eth.LastAcceptedBlock() + if !b.GetVMConfig().AllowUnfinalizedQueries && acceptedBlock != nil && tx != nil { + if blockNumber > acceptedBlock.NumberU64() { + return nil, common.Hash{}, 0, 0, nil + } + } + + return tx, blockHash, blockNumber, index, nil +} + +func (b *EthAPIBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) { + return b.eth.txPool.Nonce(addr), nil +} + +func (b *EthAPIBackend) Stats() (pending int, queued int) { + return b.eth.txPool.Stats() +} + +func (b *EthAPIBackend) TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) { + return b.eth.TxPool().Content() +} + +func (b *EthAPIBackend) TxPoolContentFrom(addr common.Address) (types.Transactions, types.Transactions) { + return b.eth.TxPool().ContentFrom(addr) +} + +func (b *EthAPIBackend) TxPool() *core.TxPool { + return b.eth.TxPool() +} + +func (b *EthAPIBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription { + return b.eth.TxPool().SubscribeNewTxsEvent(ch) +} + +func (b *EthAPIBackend) EstimateBaseFee(ctx context.Context) (*big.Int, error) { + return b.gpo.EstimateBaseFee(ctx) +} + +func (b *EthAPIBackend) SuggestPrice(ctx context.Context) (*big.Int, error) { + return b.gpo.SuggestPrice(ctx) +} + +func (b *EthAPIBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) { + return b.gpo.SuggestTipCap(ctx) +} + +func (b *EthAPIBackend) FeeHistory(ctx context.Context, blockCount int, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (firstBlock *big.Int, reward [][]*big.Int, baseFee []*big.Int, gasUsedRatio []float64, err error) { + return b.gpo.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles) +} + +func (b *EthAPIBackend) ChainDb() ethdb.Database { + return b.eth.ChainDb() +} + +func (b *EthAPIBackend) EventMux() *event.TypeMux { + return b.eth.EventMux() +} + +func (b *EthAPIBackend) AccountManager() *accounts.Manager { + return b.eth.AccountManager() +} + +func (b *EthAPIBackend) ExtRPCEnabled() bool { + return b.extRPCEnabled +} + +func (b *EthAPIBackend) UnprotectedAllowed() bool { + return b.allowUnprotectedTxs +} + +func (b *EthAPIBackend) RPCGasCap() uint64 { + return b.eth.config.RPCGasCap +} + +func (b *EthAPIBackend) RPCEVMTimeout() time.Duration { + return b.eth.config.RPCEVMTimeout +} + +func (b *EthAPIBackend) RPCTxFeeCap() float64 { + return b.eth.config.RPCTxFeeCap +} + +func (b *EthAPIBackend) BloomStatus() (uint64, uint64) { + sections, _, _ := b.eth.bloomIndexer.Sections() + return params.BloomBitsBlocks, sections +} + +func (b *EthAPIBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) { + for i := 0; i < bloomFilterThreads; i++ { + go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests) + } +} + +func (b *EthAPIBackend) Engine() consensus.Engine { + return b.eth.engine +} + +func (b *EthAPIBackend) CurrentHeader() *types.Header { + return b.eth.blockchain.CurrentHeader() +} + +func (b *EthAPIBackend) GetMaxBlocksPerRequest() int64 { + return b.eth.settings.MaxBlocksPerRequest +} + +func (b *EthAPIBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (*state.StateDB, error) { + return b.eth.stateAtBlock(block, reexec, base, checkLive, preferDisk) +} + +func (b *EthAPIBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) { + return b.eth.stateAtTransaction(block, txIndex, reexec) +} + +func (b *EthAPIBackend) MinRequiredTip(ctx context.Context, header *types.Header) (*big.Int, error) { + return dummy.MinRequiredTip(b.ChainConfig(), header) +} diff --git a/eth/backend.go b/eth/backend.go new file mode 100644 index 0000000000..ec296d5ef5 --- /dev/null +++ b/eth/backend.go @@ -0,0 +1,327 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package eth implements the Ethereum protocol. +package eth + +import ( + "errors" + "fmt" + "sync" + "time" + + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/bloombits" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/ethconfig" + "github.com/ava-labs/subnet-evm/eth/filters" + "github.com/ava-labs/subnet-evm/eth/gasprice" + "github.com/ava-labs/subnet-evm/eth/tracers" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/internal/ethapi" + "github.com/ava-labs/subnet-evm/miner" + "github.com/ava-labs/subnet-evm/node" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" +) + +// Config contains the configuration options of the ETH protocol. +// Deprecated: use ethconfig.Config instead. +type Config = ethconfig.Config + +var DefaultSettings Settings = Settings{MaxBlocksPerRequest: 2000} + +type Settings struct { + MaxBlocksPerRequest int64 // Maximum number of blocks to serve per getLogs request +} + +// Ethereum implements the Ethereum full node service. +type Ethereum struct { + config *Config + + // Handlers + txPool *core.TxPool + blockchain *core.BlockChain + + // DB interfaces + chainDb ethdb.Database // Block chain database + + eventMux *event.TypeMux + engine consensus.Engine + accountManager *accounts.Manager + + bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests + bloomIndexer *core.ChainIndexer // Bloom indexer operating during block imports + closeBloomHandler chan struct{} + + APIBackend *EthAPIBackend + + miner *miner.Miner + etherbase common.Address + + networkID uint64 + netRPCService *ethapi.PublicNetAPI + + lock sync.RWMutex // Protects the variadic fields (e.g. gas price and etherbase) + + settings Settings // Settings for Ethereum API +} + +// New creates a new Ethereum object (including the +// initialisation of the common Ethereum object) +func New(stack *node.Node, config *Config, + chainDb ethdb.Database, + settings Settings, + lastAcceptedHash common.Hash, + clock *mockable.Clock, +) (*Ethereum, error) { + if chainDb == nil { + return nil, errors.New("chainDb cannot be nil") + } + if !config.Pruning && config.TrieDirtyCache > 0 { + // If snapshots are enabled, allocate 2/5 of the TrieDirtyCache memory cap to the snapshot cache + if config.SnapshotCache > 0 { + config.TrieCleanCache += config.TrieDirtyCache * 3 / 5 + config.SnapshotCache += config.TrieDirtyCache * 2 / 5 + } else { + // If snapshots are disabled, the TrieDirtyCache will be written through to the clean cache + // so move the cache allocation from the dirty cache to the clean cache + config.TrieCleanCache += config.TrieDirtyCache + config.TrieDirtyCache = 0 + } + } + log.Info("Allocated trie memory caches", "clean", common.StorageSize(config.TrieCleanCache)*1024*1024, "dirty", common.StorageSize(config.TrieDirtyCache)*1024*1024) + + chainConfig, genesisErr := core.SetupGenesisBlock(chainDb, config.Genesis) + if genesisErr != nil { + return nil, genesisErr + } + log.Info("Initialised chain configuration", "config", chainConfig) + + eth := &Ethereum{ + config: config, + chainDb: chainDb, + eventMux: stack.EventMux(), + accountManager: stack.AccountManager(), + engine: dummy.NewEngine(), + closeBloomHandler: make(chan struct{}), + networkID: config.NetworkId, + etherbase: config.Miner.Etherbase, + bloomRequests: make(chan chan *bloombits.Retrieval), + bloomIndexer: core.NewBloomIndexer(chainDb, params.BloomBitsBlocks, params.BloomConfirms), + settings: settings, + } + + bcVersion := rawdb.ReadDatabaseVersion(chainDb) + dbVer := "" + if bcVersion != nil { + dbVer = fmt.Sprintf("%d", *bcVersion) + } + log.Info("Initialising Ethereum protocol", "network", config.NetworkId, "dbversion", dbVer) + + if !config.SkipBcVersionCheck { + if bcVersion != nil && *bcVersion > core.BlockChainVersion { + return nil, fmt.Errorf("database version is v%d, Subnet EVM %s only supports v%d", *bcVersion, params.VersionWithMeta, core.BlockChainVersion) + } else if bcVersion == nil || *bcVersion < core.BlockChainVersion { + log.Warn("Upgrade blockchain database version", "from", dbVer, "to", core.BlockChainVersion) + rawdb.WriteDatabaseVersion(chainDb, core.BlockChainVersion) + } + } + var ( + vmConfig = vm.Config{ + EnablePreimageRecording: config.EnablePreimageRecording, + AllowUnfinalizedQueries: config.AllowUnfinalizedQueries, + } + cacheConfig = &core.CacheConfig{ + TrieCleanLimit: config.TrieCleanCache, + TrieDirtyLimit: config.TrieDirtyCache, + Pruning: config.Pruning, + SnapshotLimit: config.SnapshotCache, + SnapshotAsync: config.SnapshotAsync, + SnapshotVerify: config.SnapshotVerify, + Preimages: config.Preimages, + } + ) + var err error + eth.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, chainConfig, eth.engine, vmConfig, lastAcceptedHash) + if err != nil { + return nil, err + } + eth.bloomIndexer.Start(eth.blockchain) + + // Original code (requires disk): + // if config.TxPool.Journal != "" { + // config.TxPool.Journal = stack.ResolvePath(config.TxPool.Journal) + // } + config.TxPool.Journal = "" + eth.txPool = core.NewTxPool(config.TxPool, chainConfig, eth.blockchain) + + eth.miner = miner.New(eth, &config.Miner, chainConfig, eth.EventMux(), eth.engine, clock) + + eth.APIBackend = &EthAPIBackend{ + extRPCEnabled: stack.Config().ExtRPCEnabled(), + allowUnprotectedTxs: config.AllowUnprotectedTxs, + eth: eth, + } + if config.AllowUnprotectedTxs { + log.Info("Unprotected transactions allowed") + } + gpoParams := config.GPO + eth.APIBackend.gpo = gasprice.NewOracle(eth.APIBackend, gpoParams) + + if err != nil { + return nil, err + } + + // Start the RPC service + eth.netRPCService = ethapi.NewPublicNetAPI(eth.NetVersion()) + + // Register the backend on the node + stack.RegisterAPIs(eth.APIs()) + + return eth, nil +} + +// APIs return the collection of RPC services the ethereum package offers. +// NOTE, some of these services probably need to be moved to somewhere else. +func (s *Ethereum) APIs() []rpc.API { + apis := ethapi.GetAPIs(s.APIBackend) + + // Append tracing APIs + apis = append(apis, tracers.APIs(s.APIBackend)...) + + // Append all the local APIs and return + return append(apis, []rpc.API{ + { + Namespace: "eth", + Version: "1.0", + Service: NewPublicEthereumAPI(s), + Public: true, + }, { + Namespace: "eth", + Version: "1.0", + Service: filters.NewPublicFilterAPI(s.APIBackend, false, 5*time.Minute), + Public: true, + }, { + Namespace: "admin", + Version: "1.0", + Service: NewPrivateAdminAPI(s), + }, { + Namespace: "debug", + Version: "1.0", + Service: NewPublicDebugAPI(s), + Public: true, + }, { + Namespace: "debug", + Version: "1.0", + Service: NewPrivateDebugAPI(s), + }, { + Namespace: "net", + Version: "1.0", + Service: s.netRPCService, + Public: true, + }, + }...) +} + +func (s *Ethereum) Etherbase() (eb common.Address, err error) { + s.lock.RLock() + etherbase := s.etherbase + s.lock.RUnlock() + + if etherbase != (common.Address{}) { + return etherbase, nil + } + if wallets := s.AccountManager().Wallets(); len(wallets) > 0 { + if accounts := wallets[0].Accounts(); len(accounts) > 0 { + etherbase := accounts[0].Address + + s.lock.Lock() + s.etherbase = etherbase + s.lock.Unlock() + + log.Info("Etherbase automatically configured", "address", etherbase) + return etherbase, nil + } + } + return common.Address{}, fmt.Errorf("etherbase must be explicitly specified") +} + +// SetEtherbase sets the mining reward address. +func (s *Ethereum) SetEtherbase(etherbase common.Address) { + s.lock.Lock() + s.etherbase = etherbase + s.lock.Unlock() + + s.miner.SetEtherbase(etherbase) +} + +func (s *Ethereum) Miner() *miner.Miner { return s.miner } + +func (s *Ethereum) AccountManager() *accounts.Manager { return s.accountManager } +func (s *Ethereum) BlockChain() *core.BlockChain { return s.blockchain } +func (s *Ethereum) TxPool() *core.TxPool { return s.txPool } +func (s *Ethereum) EventMux() *event.TypeMux { return s.eventMux } +func (s *Ethereum) Engine() consensus.Engine { return s.engine } +func (s *Ethereum) ChainDb() ethdb.Database { return s.chainDb } + +func (s *Ethereum) NetVersion() uint64 { return s.networkID } +func (s *Ethereum) ArchiveMode() bool { return !s.config.Pruning } +func (s *Ethereum) BloomIndexer() *core.ChainIndexer { return s.bloomIndexer } + +// Start implements node.Lifecycle, starting all internal goroutines needed by the +// Ethereum protocol implementation. +func (s *Ethereum) Start() { + // Start the bloom bits servicing goroutines + s.startBloomHandlers(params.BloomBitsBlocks) +} + +// Stop implements node.Lifecycle, terminating all internal goroutines used by the +// Ethereum protocol. +// FIXME remove error from type if this will never return an error +func (s *Ethereum) Stop() error { + s.bloomIndexer.Close() + close(s.closeBloomHandler) + s.txPool.Stop() + s.blockchain.Stop() + s.engine.Close() + s.chainDb.Close() + s.eventMux.Stop() + return nil +} + +func (s *Ethereum) LastAcceptedBlock() *types.Block { + return s.blockchain.LastAcceptedBlock() +} diff --git a/eth/bloombits.go b/eth/bloombits.go new file mode 100644 index 0000000000..5d814b3ff6 --- /dev/null +++ b/eth/bloombits.go @@ -0,0 +1,84 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package eth + +import ( + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ethereum/go-ethereum/common/bitutil" +) + +const ( + // bloomServiceThreads is the number of goroutines used globally by an Ethereum + // instance to service bloombits lookups for all running filters. + bloomServiceThreads = 16 + + // bloomFilterThreads is the number of goroutines used locally per filter to + // multiplex requests onto the global servicing goroutines. + bloomFilterThreads = 3 + + // bloomRetrievalBatch is the maximum number of bloom bit retrievals to service + // in a single batch. + bloomRetrievalBatch = 16 + + // bloomRetrievalWait is the maximum time to wait for enough bloom bit requests + // to accumulate request an entire batch (avoiding hysteresis). + bloomRetrievalWait = time.Duration(0) +) + +// startBloomHandlers starts a batch of goroutines to accept bloom bit database +// retrievals from possibly a range of filters and serving the data to satisfy. +func (eth *Ethereum) startBloomHandlers(sectionSize uint64) { + for i := 0; i < bloomServiceThreads; i++ { + go func() { + for { + select { + case <-eth.closeBloomHandler: + return + + case request := <-eth.bloomRequests: + task := <-request + task.Bitsets = make([][]byte, len(task.Sections)) + for i, section := range task.Sections { + head := rawdb.ReadCanonicalHash(eth.chainDb, (section+1)*sectionSize-1) + if compVector, err := rawdb.ReadBloomBits(eth.chainDb, task.Bit, section, head); err == nil { + if blob, err := bitutil.DecompressBytes(compVector, int(sectionSize/8)); err == nil { + task.Bitsets[i] = blob + } else { + task.Error = err + } + } else { + task.Error = err + } + } + request <- task + } + } + }() + } +} diff --git a/eth/ethconfig/config.go b/eth/ethconfig/config.go new file mode 100644 index 0000000000..0ffb727f51 --- /dev/null +++ b/eth/ethconfig/config.go @@ -0,0 +1,153 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethconfig + +import ( + "time" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/eth/gasprice" + "github.com/ava-labs/subnet-evm/miner" + "github.com/ethereum/go-ethereum/common" +) + +// DefaultFullGPOConfig contains default gasprice oracle settings for full node. +var DefaultFullGPOConfig = gasprice.Config{ + Blocks: 40, + Percentile: 60, + MaxHeaderHistory: 1024, + MaxBlockHistory: 1024, + MinPrice: gasprice.DefaultMinPrice, + MaxPrice: gasprice.DefaultMaxPrice, + MinGasUsed: gasprice.DefaultMinGasUsed, +} + +// DefaultConfig contains default settings for use on the Avalanche main net. +var DefaultConfig = NewDefaultConfig() + +func NewDefaultConfig() Config { + return Config{ + NetworkId: 1, + LightPeers: 100, + UltraLightFraction: 75, + DatabaseCache: 512, + TrieCleanCache: 75, + TrieCleanCacheJournal: "triecache", + TrieCleanCacheRejournal: 60 * time.Minute, + TrieDirtyCache: 256, + TrieTimeout: 60 * time.Minute, + SnapshotCache: 128, + Miner: miner.Config{}, + TxPool: core.DefaultTxPoolConfig, + RPCGasCap: 25000000, + RPCEVMTimeout: 5 * time.Second, + GPO: DefaultFullGPOConfig, + RPCTxFeeCap: 1, // 1 AVAX + } +} + +//go:generate gencodec -type Config -formats toml -out gen_config.go + +// Config contains configuration options for of the ETH and LES protocols. +type Config struct { + // The genesis block, which is inserted if the database is empty. + // If nil, the Ethereum main net block is used. + Genesis *core.Genesis `toml:",omitempty"` + + // Protocol options + NetworkId uint64 // Network ID to use for selecting peers to connect to + + // This can be set to list of enrtree:// URLs which will be queried for + // for nodes to connect to. + DiscoveryURLs []string + + Pruning bool // Whether to disable pruning and flush everything to disk + SnapshotAsync bool // Whether to generate the initial snapshot in async mode + SnapshotVerify bool // Whether to verify generated snapshots + + // Whitelist of required block number -> hash values to accept + Whitelist map[uint64]common.Hash `toml:"-"` + + // Light client options + LightServ int `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests + LightIngress int `toml:",omitempty"` // Incoming bandwidth limit for light servers + LightEgress int `toml:",omitempty"` // Outgoing bandwidth limit for light servers + LightPeers int `toml:",omitempty"` // Maximum number of LES client peers + LightNoPrune bool `toml:",omitempty"` // Whether to disable light chain pruning + + // Ultra Light client options + UltraLightServers []string `toml:",omitempty"` // List of trusted ultra light servers + UltraLightFraction int `toml:",omitempty"` // Percentage of trusted servers to accept an announcement + UltraLightOnlyAnnounce bool `toml:",omitempty"` // Whether to only announce headers, or also serve them + + // Database options + SkipBcVersionCheck bool `toml:"-"` + DatabaseHandles int `toml:"-"` + DatabaseCache int + // DatabaseFreezer string + + TrieCleanCache int + TrieCleanCacheJournal string `toml:",omitempty"` // Disk journal directory for trie cache to survive node restarts + TrieCleanCacheRejournal time.Duration `toml:",omitempty"` // Time interval to regenerate the journal for clean cache + TrieDirtyCache int + TrieTimeout time.Duration + SnapshotCache int + Preimages bool + + // Mining options + Miner miner.Config + + // Transaction pool options + TxPool core.TxPoolConfig + + // Gas Price Oracle options + GPO gasprice.Config + + // Enables tracking of SHA3 preimages in the VM + EnablePreimageRecording bool + + // Miscellaneous options + DocRoot string `toml:"-"` + + // RPCGasCap is the global gas cap for eth-call variants. + RPCGasCap uint64 `toml:",omitempty"` + + // RPCEVMTimeout is the global timeout for eth-call. + RPCEVMTimeout time.Duration + + // RPCTxFeeCap is the global transaction fee(price * gaslimit) cap for + // send-transction variants. The unit is ether. + RPCTxFeeCap float64 `toml:",omitempty"` + + // AllowUnfinalizedQueries allow unfinalized queries + AllowUnfinalizedQueries bool + + // AllowUnprotectedTxs allow unprotected transactions to be locally issued. + // Unprotected transactions are transactions that are signed without EIP-155 + // replay protection. + AllowUnprotectedTxs bool +} diff --git a/eth/filters/api.go b/eth/filters/api.go new file mode 100644 index 0000000000..37740ec901 --- /dev/null +++ b/eth/filters/api.go @@ -0,0 +1,672 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package filters + +import ( + "context" + "encoding/json" + "errors" + "fmt" + "math/big" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/event" +) + +// filter is a helper struct that holds meta information over the filter type +// and associated subscription in the event system. +type filter struct { + typ Type + deadline *time.Timer // filter is inactiv when deadline triggers + hashes []common.Hash + crit FilterCriteria + logs []*types.Log + s *Subscription // associated subscription in event system +} + +// PublicFilterAPI offers support to create and manage filters. This will allow external clients to retrieve various +// information related to the Ethereum protocol such als blocks, transactions and logs. +type PublicFilterAPI struct { + backend Backend + mux *event.TypeMux + quit chan struct{} + chainDb ethdb.Database + events *EventSystem + filtersMu sync.Mutex + filters map[rpc.ID]*filter + timeout time.Duration +} + +// NewPublicFilterAPI returns a new PublicFilterAPI instance. +func NewPublicFilterAPI(backend Backend, lightMode bool, timeout time.Duration) *PublicFilterAPI { + api := &PublicFilterAPI{ + backend: backend, + chainDb: backend.ChainDb(), + events: NewEventSystem(backend, lightMode), + filters: make(map[rpc.ID]*filter), + timeout: timeout, + } + go api.timeoutLoop(timeout) + + return api +} + +// timeoutLoop runs at the interval set by 'timeout' and deletes filters +// that have not been recently used. It is started when the API is created. +func (api *PublicFilterAPI) timeoutLoop(timeout time.Duration) { + var toUninstall []*Subscription + ticker := time.NewTicker(timeout) + defer ticker.Stop() + for { + <-ticker.C + api.filtersMu.Lock() + for id, f := range api.filters { + select { + case <-f.deadline.C: + toUninstall = append(toUninstall, f.s) + delete(api.filters, id) + default: + continue + } + } + api.filtersMu.Unlock() + + // Unsubscribes are processed outside the lock to avoid the following scenario: + // event loop attempts broadcasting events to still active filters while + // Unsubscribe is waiting for it to process the uninstall request. + for _, s := range toUninstall { + s.Unsubscribe() + } + toUninstall = nil + } +} + +// NewPendingTransactionFilter creates a filter that fetches pending transaction hashes +// as transactions enter the pending state. +// +// It is part of the filter package because this filter can be used through the +// `eth_getFilterChanges` polling method that is also used for log filters. +// +// https://eth.wiki/json-rpc/API#eth_newpendingtransactionfilter +func (api *PublicFilterAPI) NewPendingTransactionFilter() rpc.ID { + var ( + pendingTxs = make(chan []common.Hash) + pendingTxSub = api.events.SubscribePendingTxs(pendingTxs) + ) + + api.filtersMu.Lock() + api.filters[pendingTxSub.ID] = &filter{typ: PendingTransactionsSubscription, deadline: time.NewTimer(api.timeout), hashes: make([]common.Hash, 0), s: pendingTxSub} + api.filtersMu.Unlock() + + go func() { + for { + select { + case ph := <-pendingTxs: + api.filtersMu.Lock() + if f, found := api.filters[pendingTxSub.ID]; found { + f.hashes = append(f.hashes, ph...) + } + api.filtersMu.Unlock() + case <-pendingTxSub.Err(): + api.filtersMu.Lock() + delete(api.filters, pendingTxSub.ID) + api.filtersMu.Unlock() + return + } + } + }() + + return pendingTxSub.ID +} + +// NewPendingTransactions creates a subscription that is triggered each time a transaction +// enters the transaction pool and was signed from one of the transactions this nodes manages. +func (api *PublicFilterAPI) NewPendingTransactions(ctx context.Context) (*rpc.Subscription, error) { + notifier, supported := rpc.NotifierFromContext(ctx) + if !supported { + return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported + } + + rpcSub := notifier.CreateSubscription() + + go func() { + txHashes := make(chan []common.Hash, 128) + pendingTxSub := api.events.SubscribePendingTxs(txHashes) + + for { + select { + case hashes := <-txHashes: + // To keep the original behaviour, send a single tx hash in one notification. + // TODO(rjl493456442) Send a batch of tx hashes in one notification + for _, h := range hashes { + notifier.Notify(rpcSub.ID, h) + } + case <-rpcSub.Err(): + pendingTxSub.Unsubscribe() + return + case <-notifier.Closed(): + pendingTxSub.Unsubscribe() + return + } + } + }() + + return rpcSub, nil +} + +// NewAcceptedTransactions creates a subscription that is triggered each time a transaction is accepted. +func (api *PublicFilterAPI) NewAcceptedTransactions(ctx context.Context) (*rpc.Subscription, error) { + notifier, supported := rpc.NotifierFromContext(ctx) + if !supported { + return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported + } + + rpcSub := notifier.CreateSubscription() + + go func() { + txHashes := make(chan []common.Hash, 128) + acceptedTxSub := api.events.SubscribeAcceptedTxs(txHashes) + + for { + select { + case hashes := <-txHashes: + for _, h := range hashes { + notifier.Notify(rpcSub.ID, h) + } + case <-rpcSub.Err(): + acceptedTxSub.Unsubscribe() + return + case <-notifier.Closed(): + acceptedTxSub.Unsubscribe() + return + } + } + }() + + return rpcSub, nil +} + +// NewBlockFilter creates a filter that fetches blocks that are imported into the chain. +// It is part of the filter package since polling goes with eth_getFilterChanges. +// +// https://eth.wiki/json-rpc/API#eth_newblockfilter +func (api *PublicFilterAPI) NewBlockFilter() rpc.ID { + var ( + headers = make(chan *types.Header) + headerSub *Subscription + ) + + if api.backend.GetVMConfig().AllowUnfinalizedQueries { + headerSub = api.events.SubscribeNewHeads(headers) + } else { + headerSub = api.events.SubscribeAcceptedHeads(headers) + } + + api.filtersMu.Lock() + api.filters[headerSub.ID] = &filter{typ: BlocksSubscription, deadline: time.NewTimer(api.timeout), hashes: make([]common.Hash, 0), s: headerSub} + api.filtersMu.Unlock() + + go func() { + for { + select { + case h := <-headers: + api.filtersMu.Lock() + if f, found := api.filters[headerSub.ID]; found { + f.hashes = append(f.hashes, h.Hash()) + } + api.filtersMu.Unlock() + case <-headerSub.Err(): + api.filtersMu.Lock() + delete(api.filters, headerSub.ID) + api.filtersMu.Unlock() + return + } + } + }() + + return headerSub.ID +} + +// NewHeads send a notification each time a new (header) block is appended to the chain. +func (api *PublicFilterAPI) NewHeads(ctx context.Context) (*rpc.Subscription, error) { + notifier, supported := rpc.NotifierFromContext(ctx) + if !supported { + return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported + } + + rpcSub := notifier.CreateSubscription() + + go func() { + var ( + headers = make(chan *types.Header) + headersSub event.Subscription + ) + + if api.backend.GetVMConfig().AllowUnfinalizedQueries { + headersSub = api.events.SubscribeNewHeads(headers) + } else { + headersSub = api.events.SubscribeAcceptedHeads(headers) + } + + for { + select { + case h := <-headers: + notifier.Notify(rpcSub.ID, h) + case <-rpcSub.Err(): + headersSub.Unsubscribe() + return + case <-notifier.Closed(): + headersSub.Unsubscribe() + return + } + } + }() + + return rpcSub, nil +} + +// Logs creates a subscription that fires for all new log that match the given filter criteria. +func (api *PublicFilterAPI) Logs(ctx context.Context, crit FilterCriteria) (*rpc.Subscription, error) { + notifier, supported := rpc.NotifierFromContext(ctx) + if !supported { + return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported + } + + var ( + rpcSub = notifier.CreateSubscription() + matchedLogs = make(chan []*types.Log) + logsSub event.Subscription + err error + ) + + if api.backend.GetVMConfig().AllowUnfinalizedQueries { + logsSub, err = api.events.SubscribeLogs(interfaces.FilterQuery(crit), matchedLogs) + if err != nil { + return nil, err + } + } else { + logsSub, err = api.events.SubscribeAcceptedLogs(interfaces.FilterQuery(crit), matchedLogs) + if err != nil { + return nil, err + } + } + + go func() { + for { + select { + case logs := <-matchedLogs: + for _, log := range logs { + notifier.Notify(rpcSub.ID, &log) + } + case <-rpcSub.Err(): // client send an unsubscribe request + logsSub.Unsubscribe() + return + case <-notifier.Closed(): // connection dropped + logsSub.Unsubscribe() + return + } + } + }() + + return rpcSub, nil +} + +// FilterCriteria represents a request to create a new filter. +// Same as interfaces.FilterQuery but with UnmarshalJSON() method. +type FilterCriteria interfaces.FilterQuery + +// NewFilter creates a new filter and returns the filter id. It can be +// used to retrieve logs when the state changes. This method cannot be +// used to fetch logs that are already stored in the state. +// +// Default criteria for the from and to block are "latest". +// Using "latest" as block number will return logs for mined blocks. +// Using "pending" as block number returns logs for not yet mined (pending) blocks. +// In case logs are removed (chain reorg) previously returned logs are returned +// again but with the removed property set to true. +// +// In case "fromBlock" > "toBlock" an error is returned. +// +// https://eth.wiki/json-rpc/API#eth_newfilter +func (api *PublicFilterAPI) NewFilter(crit FilterCriteria) (rpc.ID, error) { + var ( + logs = make(chan []*types.Log) + logsSub *Subscription + err error + ) + + if api.backend.GetVMConfig().AllowUnfinalizedQueries { + logsSub, err = api.events.SubscribeLogs(interfaces.FilterQuery(crit), logs) + if err != nil { + return rpc.ID(""), err + } + } else { + logsSub, err = api.events.SubscribeAcceptedLogs(interfaces.FilterQuery(crit), logs) + if err != nil { + return rpc.ID(""), err + } + } + + api.filtersMu.Lock() + api.filters[logsSub.ID] = &filter{typ: LogsSubscription, crit: crit, deadline: time.NewTimer(api.timeout), logs: make([]*types.Log, 0), s: logsSub} + api.filtersMu.Unlock() + + go func() { + for { + select { + case l := <-logs: + api.filtersMu.Lock() + if f, found := api.filters[logsSub.ID]; found { + f.logs = append(f.logs, l...) + } + api.filtersMu.Unlock() + case <-logsSub.Err(): + api.filtersMu.Lock() + delete(api.filters, logsSub.ID) + api.filtersMu.Unlock() + return + } + } + }() + + return logsSub.ID, nil +} + +// GetLogs returns logs matching the given argument that are stored within the state. +// +// https://eth.wiki/json-rpc/API#eth_getlogs +func (api *PublicFilterAPI) GetLogs(ctx context.Context, crit FilterCriteria) ([]*types.Log, error) { + var filter *Filter + if crit.BlockHash != nil { + // Block filter requested, construct a single-shot filter + filter = NewBlockFilter(api.backend, *crit.BlockHash, crit.Addresses, crit.Topics) + } else { + // Convert the RPC block numbers into internal representations + // LatestBlockNumber is left in place here to be handled + // correctly within NewRangeFilter + begin := rpc.LatestBlockNumber.Int64() + if crit.FromBlock != nil { + begin = crit.FromBlock.Int64() + } + end := rpc.LatestBlockNumber.Int64() + if crit.ToBlock != nil { + end = crit.ToBlock.Int64() + } + // Construct the range filter + var err error + filter, err = NewRangeFilter(api.backend, begin, end, crit.Addresses, crit.Topics) + if err != nil { + return nil, err + } + } + // Run the filter and return all the logs + logs, err := filter.Logs(ctx) + if err != nil { + return nil, err + } + return returnLogs(logs), err +} + +// UninstallFilter removes the filter with the given filter id. +// +// https://eth.wiki/json-rpc/API#eth_uninstallfilter +func (api *PublicFilterAPI) UninstallFilter(id rpc.ID) bool { + api.filtersMu.Lock() + f, found := api.filters[id] + if found { + delete(api.filters, id) + } + api.filtersMu.Unlock() + if found { + f.s.Unsubscribe() + } + + return found +} + +// GetFilterLogs returns the logs for the filter with the given id. +// If the filter could not be found an empty array of logs is returned. +// +// https://eth.wiki/json-rpc/API#eth_getfilterlogs +func (api *PublicFilterAPI) GetFilterLogs(ctx context.Context, id rpc.ID) ([]*types.Log, error) { + api.filtersMu.Lock() + f, found := api.filters[id] + api.filtersMu.Unlock() + + if !found || f.typ != LogsSubscription { + return nil, fmt.Errorf("filter not found") + } + + var filter *Filter + if f.crit.BlockHash != nil { + // Block filter requested, construct a single-shot filter + filter = NewBlockFilter(api.backend, *f.crit.BlockHash, f.crit.Addresses, f.crit.Topics) + } else { + // Convert the RPC block numbers into internal representations + // Leave LatestBlockNumber in place here as the defaults + // Should be handled correctly as request for the last + // accepted block instead throughout all APIs. + begin := rpc.LatestBlockNumber.Int64() + if f.crit.FromBlock != nil { + begin = f.crit.FromBlock.Int64() + } + end := rpc.LatestBlockNumber.Int64() + if f.crit.ToBlock != nil { + end = f.crit.ToBlock.Int64() + } + // Construct the range filter + var err error + filter, err = NewRangeFilter(api.backend, begin, end, f.crit.Addresses, f.crit.Topics) + if err != nil { + return nil, err + } + } + // Run the filter and return all the logs + logs, err := filter.Logs(ctx) + if err != nil { + return nil, err + } + return returnLogs(logs), nil +} + +// GetFilterChanges returns the logs for the filter with the given id since +// last time it was called. This can be used for polling. +// +// For pending transaction and block filters the result is []common.Hash. +// (pending)Log filters return []Log. +// +// https://eth.wiki/json-rpc/API#eth_getfilterchanges +func (api *PublicFilterAPI) GetFilterChanges(id rpc.ID) (interface{}, error) { + api.filtersMu.Lock() + defer api.filtersMu.Unlock() + + if f, found := api.filters[id]; found { + if !f.deadline.Stop() { + // timer expired but filter is not yet removed in timeout loop + // receive timer value and reset timer + <-f.deadline.C + } + f.deadline.Reset(api.timeout) + + switch f.typ { + case PendingTransactionsSubscription, BlocksSubscription, AcceptedBlocksSubscription, AcceptedTransactionsSubscription: + hashes := f.hashes + f.hashes = nil + return returnHashes(hashes), nil + case LogsSubscription, AcceptedLogsSubscription, MinedAndPendingLogsSubscription: + logs := f.logs + f.logs = nil + return returnLogs(logs), nil + } + } + + return []interface{}{}, fmt.Errorf("filter not found") +} + +// returnHashes is a helper that will return an empty hash array case the given hash array is nil, +// otherwise the given hashes array is returned. +func returnHashes(hashes []common.Hash) []common.Hash { + if hashes == nil { + return []common.Hash{} + } + return hashes +} + +// returnLogs is a helper that will return an empty log array in case the given logs array is nil, +// otherwise the given logs array is returned. +func returnLogs(logs []*types.Log) []*types.Log { + if logs == nil { + return []*types.Log{} + } + return logs +} + +// UnmarshalJSON sets *args fields with given data. +func (args *FilterCriteria) UnmarshalJSON(data []byte) error { + type input struct { + BlockHash *common.Hash `json:"blockHash"` + FromBlock *rpc.BlockNumber `json:"fromBlock"` + ToBlock *rpc.BlockNumber `json:"toBlock"` + Addresses interface{} `json:"address"` + Topics []interface{} `json:"topics"` + } + + var raw input + if err := json.Unmarshal(data, &raw); err != nil { + return err + } + + if raw.BlockHash != nil { + if raw.FromBlock != nil || raw.ToBlock != nil { + // BlockHash is mutually exclusive with FromBlock/ToBlock criteria + return fmt.Errorf("cannot specify both BlockHash and FromBlock/ToBlock, choose one or the other") + } + args.BlockHash = raw.BlockHash + } else { + if raw.FromBlock != nil { + args.FromBlock = big.NewInt(raw.FromBlock.Int64()) + } + + if raw.ToBlock != nil { + args.ToBlock = big.NewInt(raw.ToBlock.Int64()) + } + } + + args.Addresses = []common.Address{} + + if raw.Addresses != nil { + // raw.Address can contain a single address or an array of addresses + switch rawAddr := raw.Addresses.(type) { + case []interface{}: + for i, addr := range rawAddr { + if strAddr, ok := addr.(string); ok { + addr, err := decodeAddress(strAddr) + if err != nil { + return fmt.Errorf("invalid address at index %d: %v", i, err) + } + args.Addresses = append(args.Addresses, addr) + } else { + return fmt.Errorf("non-string address at index %d", i) + } + } + case string: + addr, err := decodeAddress(rawAddr) + if err != nil { + return fmt.Errorf("invalid address: %v", err) + } + args.Addresses = []common.Address{addr} + default: + return errors.New("invalid addresses in query") + } + } + + // topics is an array consisting of strings and/or arrays of strings. + // JSON null values are converted to common.Hash{} and ignored by the filter manager. + if len(raw.Topics) > 0 { + args.Topics = make([][]common.Hash, len(raw.Topics)) + for i, t := range raw.Topics { + switch topic := t.(type) { + case nil: + // ignore topic when matching logs + + case string: + // match specific topic + top, err := decodeTopic(topic) + if err != nil { + return err + } + args.Topics[i] = []common.Hash{top} + + case []interface{}: + // or case e.g. [null, "topic0", "topic1"] + for _, rawTopic := range topic { + if rawTopic == nil { + // null component, match all + args.Topics[i] = nil + break + } + if topic, ok := rawTopic.(string); ok { + parsed, err := decodeTopic(topic) + if err != nil { + return err + } + args.Topics[i] = append(args.Topics[i], parsed) + } else { + return fmt.Errorf("invalid topic(s)") + } + } + default: + return fmt.Errorf("invalid topic(s)") + } + } + } + + return nil +} + +func decodeAddress(s string) (common.Address, error) { + b, err := hexutil.Decode(s) + if err == nil && len(b) != common.AddressLength { + err = fmt.Errorf("hex has invalid length %d after decoding; expected %d for address", len(b), common.AddressLength) + } + return common.BytesToAddress(b), err +} + +func decodeTopic(s string) (common.Hash, error) { + b, err := hexutil.Decode(s) + if err == nil && len(b) != common.HashLength { + err = fmt.Errorf("hex has invalid length %d after decoding; expected %d for topic", len(b), common.HashLength) + } + return common.BytesToHash(b), err +} diff --git a/eth/filters/api_test.go b/eth/filters/api_test.go new file mode 100644 index 0000000000..8d262ef6e8 --- /dev/null +++ b/eth/filters/api_test.go @@ -0,0 +1,185 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package filters + +import ( + "encoding/json" + "fmt" + "testing" + + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" +) + +func TestUnmarshalJSONNewFilterArgs(t *testing.T) { + var ( + fromBlock rpc.BlockNumber = 0x123435 + toBlock rpc.BlockNumber = 0xabcdef + address0 = common.HexToAddress("70c87d191324e6712a591f304b4eedef6ad9bb9d") + address1 = common.HexToAddress("9b2055d370f73ec7d8a03e965129118dc8f5bf83") + topic0 = common.HexToHash("3ac225168df54212a25c1c01fd35bebfea408fdac2e31ddd6f80a4bbf9a5f1ca") + topic1 = common.HexToHash("9084a792d2f8b16a62b882fd56f7860c07bf5fa91dd8a2ae7e809e5180fef0b3") + topic2 = common.HexToHash("6ccae1c4af4152f460ff510e573399795dfab5dcf1fa60d1f33ac8fdc1e480ce") + ) + + // default values + var test0 FilterCriteria + if err := json.Unmarshal([]byte("{}"), &test0); err != nil { + t.Fatal(err) + } + if test0.FromBlock != nil { + t.Fatalf("expected nil, got %d", test0.FromBlock) + } + if test0.ToBlock != nil { + t.Fatalf("expected nil, got %d", test0.ToBlock) + } + if len(test0.Addresses) != 0 { + t.Fatalf("expected 0 addresses, got %d", len(test0.Addresses)) + } + if len(test0.Topics) != 0 { + t.Fatalf("expected 0 topics, got %d topics", len(test0.Topics)) + } + + // from, to block number + var test1 FilterCriteria + vector := fmt.Sprintf(`{"fromBlock":"0x%x","toBlock":"0x%x"}`, fromBlock, toBlock) + if err := json.Unmarshal([]byte(vector), &test1); err != nil { + t.Fatal(err) + } + if test1.FromBlock.Int64() != fromBlock.Int64() { + t.Fatalf("expected FromBlock %d, got %d", fromBlock, test1.FromBlock) + } + if test1.ToBlock.Int64() != toBlock.Int64() { + t.Fatalf("expected ToBlock %d, got %d", toBlock, test1.ToBlock) + } + + // single address + var test2 FilterCriteria + vector = fmt.Sprintf(`{"address": "%s"}`, address0.Hex()) + if err := json.Unmarshal([]byte(vector), &test2); err != nil { + t.Fatal(err) + } + if len(test2.Addresses) != 1 { + t.Fatalf("expected 1 address, got %d address(es)", len(test2.Addresses)) + } + if test2.Addresses[0] != address0 { + t.Fatalf("expected address %x, got %x", address0, test2.Addresses[0]) + } + + // multiple address + var test3 FilterCriteria + vector = fmt.Sprintf(`{"address": ["%s", "%s"]}`, address0.Hex(), address1.Hex()) + if err := json.Unmarshal([]byte(vector), &test3); err != nil { + t.Fatal(err) + } + if len(test3.Addresses) != 2 { + t.Fatalf("expected 2 addresses, got %d address(es)", len(test3.Addresses)) + } + if test3.Addresses[0] != address0 { + t.Fatalf("expected address %x, got %x", address0, test3.Addresses[0]) + } + if test3.Addresses[1] != address1 { + t.Fatalf("expected address %x, got %x", address1, test3.Addresses[1]) + } + + // single topic + var test4 FilterCriteria + vector = fmt.Sprintf(`{"topics": ["%s"]}`, topic0.Hex()) + if err := json.Unmarshal([]byte(vector), &test4); err != nil { + t.Fatal(err) + } + if len(test4.Topics) != 1 { + t.Fatalf("expected 1 topic, got %d", len(test4.Topics)) + } + if len(test4.Topics[0]) != 1 { + t.Fatalf("expected len(topics[0]) to be 1, got %d", len(test4.Topics[0])) + } + if test4.Topics[0][0] != topic0 { + t.Fatalf("got %x, expected %x", test4.Topics[0][0], topic0) + } + + // test multiple "AND" topics + var test5 FilterCriteria + vector = fmt.Sprintf(`{"topics": ["%s", "%s"]}`, topic0.Hex(), topic1.Hex()) + if err := json.Unmarshal([]byte(vector), &test5); err != nil { + t.Fatal(err) + } + if len(test5.Topics) != 2 { + t.Fatalf("expected 2 topics, got %d", len(test5.Topics)) + } + if len(test5.Topics[0]) != 1 { + t.Fatalf("expected 1 topic, got %d", len(test5.Topics[0])) + } + if test5.Topics[0][0] != topic0 { + t.Fatalf("got %x, expected %x", test5.Topics[0][0], topic0) + } + if len(test5.Topics[1]) != 1 { + t.Fatalf("expected 1 topic, got %d", len(test5.Topics[1])) + } + if test5.Topics[1][0] != topic1 { + t.Fatalf("got %x, expected %x", test5.Topics[1][0], topic1) + } + + // test optional topic + var test6 FilterCriteria + vector = fmt.Sprintf(`{"topics": ["%s", null, "%s"]}`, topic0.Hex(), topic2.Hex()) + if err := json.Unmarshal([]byte(vector), &test6); err != nil { + t.Fatal(err) + } + if len(test6.Topics) != 3 { + t.Fatalf("expected 3 topics, got %d", len(test6.Topics)) + } + if len(test6.Topics[0]) != 1 { + t.Fatalf("expected 1 topic, got %d", len(test6.Topics[0])) + } + if test6.Topics[0][0] != topic0 { + t.Fatalf("got %x, expected %x", test6.Topics[0][0], topic0) + } + if len(test6.Topics[1]) != 0 { + t.Fatalf("expected 0 topic, got %d", len(test6.Topics[1])) + } + if len(test6.Topics[2]) != 1 { + t.Fatalf("expected 1 topic, got %d", len(test6.Topics[2])) + } + if test6.Topics[2][0] != topic2 { + t.Fatalf("got %x, expected %x", test6.Topics[2][0], topic2) + } + + // test OR topics + var test7 FilterCriteria + vector = fmt.Sprintf(`{"topics": [["%s", "%s"], null, ["%s", null]]}`, topic0.Hex(), topic1.Hex(), topic2.Hex()) + if err := json.Unmarshal([]byte(vector), &test7); err != nil { + t.Fatal(err) + } + if len(test7.Topics) != 3 { + t.Fatalf("expected 3 topics, got %d topics", len(test7.Topics)) + } + if len(test7.Topics[0]) != 2 { + t.Fatalf("expected 2 topics, got %d topics", len(test7.Topics[0])) + } + if test7.Topics[0][0] != topic0 || test7.Topics[0][1] != topic1 { + t.Fatalf("invalid topics expected [%x,%x], got [%x,%x]", + topic0, topic1, test7.Topics[0][0], test7.Topics[0][1], + ) + } + if len(test7.Topics[1]) != 0 { + t.Fatalf("expected 0 topic, got %d topics", len(test7.Topics[1])) + } + if len(test7.Topics[2]) != 0 { + t.Fatalf("expected 0 topics, got %d topics", len(test7.Topics[2])) + } +} diff --git a/eth/filters/filter.go b/eth/filters/filter.go new file mode 100644 index 0000000000..300d71f097 --- /dev/null +++ b/eth/filters/filter.go @@ -0,0 +1,402 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package filters + +import ( + "context" + "errors" + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/core/vm" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/bloombits" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" +) + +type Backend interface { + ChainDb() ethdb.Database + HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) + HeaderByHash(ctx context.Context, blockHash common.Hash) (*types.Header, error) + GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error) + GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error) + + SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription + SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription + SubscribeChainAcceptedEvent(ch chan<- core.ChainEvent) event.Subscription + SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription + SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription + SubscribeAcceptedLogsEvent(ch chan<- []*types.Log) event.Subscription + + SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription + + SubscribeAcceptedTransactionEvent(ch chan<- core.NewTxsEvent) event.Subscription + + BloomStatus() (uint64, uint64) + ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) + + // Added to the backend interface to support limiting of logs requests + GetVMConfig() *vm.Config + LastAcceptedBlock() *types.Block + GetMaxBlocksPerRequest() int64 +} + +// Filter can be used to retrieve and filter logs. +type Filter struct { + backend Backend + + db ethdb.Database + addresses []common.Address + topics [][]common.Hash + + block common.Hash // Block hash if filtering a single block + begin, end int64 // Range interval if filtering multiple blocks + + matcher *bloombits.Matcher +} + +// NewRangeFilter creates a new filter which uses a bloom filter on blocks to +// figure out whether a particular block is interesting or not. +func NewRangeFilter(backend Backend, begin, end int64, addresses []common.Address, topics [][]common.Hash) (*Filter, error) { + allowUnfinalizedQueries := backend.GetVMConfig().AllowUnfinalizedQueries + acceptedBlock := backend.LastAcceptedBlock() + + // Flatten the address and topic filter clauses into a single bloombits filter + // system. Since the bloombits are not positional, nil topics are permitted, + // which get flattened into a nil byte slice. + var filters [][][]byte + if len(addresses) > 0 { + filter := make([][]byte, len(addresses)) + for i, address := range addresses { + filter[i] = address.Bytes() + } + filters = append(filters, filter) + } + for _, topicList := range topics { + filter := make([][]byte, len(topicList)) + for i, topic := range topicList { + filter[i] = topic.Bytes() + } + filters = append(filters, filter) + } + size, _ := backend.BloomStatus() + + if !allowUnfinalizedQueries && acceptedBlock != nil { + lastAccepted := acceptedBlock.Number().Int64() + if begin >= 0 && begin > lastAccepted { + return nil, fmt.Errorf("requested from block %d after last accepted block %d", begin, lastAccepted) + } + if end >= 0 && end > lastAccepted { + return nil, fmt.Errorf("requested to block %d after last accepted block %d", end, lastAccepted) + } + } + + // Create a generic filter and convert it into a range filter + filter := newFilter(backend, addresses, topics) + + filter.matcher = bloombits.NewMatcher(size, filters) + filter.begin = begin + filter.end = end + + return filter, nil +} + +// NewBlockFilter creates a new filter which directly inspects the contents of +// a block to figure out whether it is interesting or not. +func NewBlockFilter(backend Backend, block common.Hash, addresses []common.Address, topics [][]common.Hash) *Filter { + // Create a generic filter and convert it into a block filter + filter := newFilter(backend, addresses, topics) + filter.block = block + return filter +} + +// newFilter creates a generic filter that can either filter based on a block hash, +// or based on range queries. The search criteria needs to be explicitly set. +func newFilter(backend Backend, addresses []common.Address, topics [][]common.Hash) *Filter { + return &Filter{ + backend: backend, + addresses: addresses, + topics: topics, + db: backend.ChainDb(), + } +} + +// Logs searches the blockchain for matching log entries, returning all from the +// first block that contains matches, updating the start of the filter accordingly. +func (f *Filter) Logs(ctx context.Context) ([]*types.Log, error) { + // If we're doing singleton block filtering, execute and return + if f.block != (common.Hash{}) { + header, err := f.backend.HeaderByHash(ctx, f.block) + if err != nil { + return nil, err + } + if header == nil { + return nil, errors.New("unknown block") + } + return f.blockLogs(ctx, header) + } + // Figure out the limits of the filter range + // LatestBlockNumber is transformed into the last accepted block in HeaderByNumber + // so it is left in place here. + header, err := f.backend.HeaderByNumber(ctx, rpc.LatestBlockNumber) + if err != nil { + return nil, err + } + if header == nil { + return nil, nil + } + head := header.Number.Uint64() + + if f.begin < 0 { + f.begin = int64(head) + } + end := uint64(f.end) + if f.end < 0 { + end = head + } + + // When querying unfinalized data without a populated end block, it is + // possible that the begin will be greater than the end. + // + // We error in this case to prevent a bad UX where the caller thinks there + // are no logs from the specified beginning to end (when in reality there may + // be some). + if end < uint64(f.begin) { + return nil, fmt.Errorf("begin block %d is greater than end block %d", f.begin, end) + } + + // If the requested range of blocks exceeds the maximum number of blocks allowed by the backend + // return an error instead of searching for the logs. + if maxBlocks := f.backend.GetMaxBlocksPerRequest(); int64(end)-f.begin > maxBlocks && maxBlocks > 0 { + return nil, fmt.Errorf("requested too many blocks from %d to %d, maximum is set to %d", f.begin, int64(end), maxBlocks) + } + // Gather all indexed logs, and finish with non indexed ones + var logs []*types.Log + size, sections := f.backend.BloomStatus() + if indexed := sections * size; indexed > uint64(f.begin) { + if indexed > end { + logs, err = f.indexedLogs(ctx, end) + } else { + logs, err = f.indexedLogs(ctx, indexed-1) + } + if err != nil { + return logs, err + } + } + rest, err := f.unindexedLogs(ctx, end) + logs = append(logs, rest...) + return logs, err +} + +// indexedLogs returns the logs matching the filter criteria based on the bloom +// bits indexed available locally or via the network. +func (f *Filter) indexedLogs(ctx context.Context, end uint64) ([]*types.Log, error) { + // Create a matcher session and request servicing from the backend + matches := make(chan uint64, 64) + + session, err := f.matcher.Start(ctx, uint64(f.begin), end, matches) + if err != nil { + return nil, err + } + defer session.Close() + + f.backend.ServiceFilter(ctx, session) + + // Iterate over the matches until exhausted or context closed + var logs []*types.Log + + for { + select { + case number, ok := <-matches: + // Abort if all matches have been fulfilled + if !ok { + err := session.Error() + if err == nil { + f.begin = int64(end) + 1 + } + return logs, err + } + f.begin = int64(number) + 1 + + // Retrieve the suggested block and pull any truly matching logs + header, err := f.backend.HeaderByNumber(ctx, rpc.BlockNumber(number)) + if header == nil || err != nil { + return logs, err + } + found, err := f.checkMatches(ctx, header) + if err != nil { + return logs, err + } + logs = append(logs, found...) + + case <-ctx.Done(): + return logs, ctx.Err() + } + } +} + +// unindexedLogs returns the logs matching the filter criteria based on raw block +// iteration and bloom matching. +func (f *Filter) unindexedLogs(ctx context.Context, end uint64) ([]*types.Log, error) { + var logs []*types.Log + + for ; f.begin <= int64(end); f.begin++ { + header, err := f.backend.HeaderByNumber(ctx, rpc.BlockNumber(f.begin)) + if header == nil || err != nil { + return logs, err + } + found, err := f.blockLogs(ctx, header) + if err != nil { + return logs, err + } + logs = append(logs, found...) + } + return logs, nil +} + +// blockLogs returns the logs matching the filter criteria within a single block. +func (f *Filter) blockLogs(ctx context.Context, header *types.Header) (logs []*types.Log, err error) { + if bloomFilter(header.Bloom, f.addresses, f.topics) { + found, err := f.checkMatches(ctx, header) + if err != nil { + return logs, err + } + logs = append(logs, found...) + } + return logs, nil +} + +// checkMatches checks if the receipts belonging to the given header contain any log events that +// match the filter criteria. This function is called when the bloom filter signals a potential match. +func (f *Filter) checkMatches(ctx context.Context, header *types.Header) (logs []*types.Log, err error) { + // Get the logs of the block + logsList, err := f.backend.GetLogs(ctx, header.Hash()) + if err != nil { + return nil, err + } + var unfiltered []*types.Log + for _, logs := range logsList { + unfiltered = append(unfiltered, logs...) + } + logs = filterLogs(unfiltered, nil, nil, f.addresses, f.topics) + if len(logs) > 0 { + // We have matching logs, check if we need to resolve full logs via the light client + if logs[0].TxHash == (common.Hash{}) { + receipts, err := f.backend.GetReceipts(ctx, header.Hash()) + if err != nil { + return nil, err + } + unfiltered = unfiltered[:0] + for _, receipt := range receipts { + unfiltered = append(unfiltered, receipt.Logs...) + } + logs = filterLogs(unfiltered, nil, nil, f.addresses, f.topics) + } + return logs, nil + } + return nil, nil +} + +func includes(addresses []common.Address, a common.Address) bool { + for _, addr := range addresses { + if addr == a { + return true + } + } + + return false +} + +// filterLogs creates a slice of logs matching the given criteria. +func filterLogs(logs []*types.Log, fromBlock, toBlock *big.Int, addresses []common.Address, topics [][]common.Hash) []*types.Log { + var ret []*types.Log +Logs: + for _, log := range logs { + if fromBlock != nil && fromBlock.Int64() >= 0 && fromBlock.Uint64() > log.BlockNumber { + continue + } + if toBlock != nil && toBlock.Int64() >= 0 && toBlock.Uint64() < log.BlockNumber { + continue + } + + if len(addresses) > 0 && !includes(addresses, log.Address) { + continue + } + // If the to filtered topics is greater than the amount of topics in logs, skip. + if len(topics) > len(log.Topics) { + continue Logs + } + for i, sub := range topics { + match := len(sub) == 0 // empty rule set == wildcard + for _, topic := range sub { + if log.Topics[i] == topic { + match = true + break + } + } + if !match { + continue Logs + } + } + ret = append(ret, log) + } + return ret +} + +func bloomFilter(bloom types.Bloom, addresses []common.Address, topics [][]common.Hash) bool { + if len(addresses) > 0 { + var included bool + for _, addr := range addresses { + if types.BloomLookup(bloom, addr) { + included = true + break + } + } + if !included { + return false + } + } + + for _, sub := range topics { + included := len(sub) == 0 // empty rule set == wildcard + for _, topic := range sub { + if types.BloomLookup(bloom, topic) { + included = true + break + } + } + if !included { + return false + } + } + return true +} diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go new file mode 100644 index 0000000000..1a8e5723ff --- /dev/null +++ b/eth/filters/filter_system.go @@ -0,0 +1,649 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package filters implements an ethereum filtering system for block, +// transactions and log events. +package filters + +import ( + "context" + "fmt" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" +) + +// Type determines the kind of filter and is used to put the filter in to +// the correct bucket when added. +type Type byte + +const ( + // UnknownSubscription indicates an unknown subscription type + UnknownSubscription Type = iota + // LogsSubscription queries for new or removed (chain reorg) logs + LogsSubscription + // AcceptedLogsSubscription queries for new or removed (chain reorg) logs + AcceptedLogsSubscription + // PendingLogsSubscription queries for logs in pending blocks + PendingLogsSubscription + // MinedAndPendingLogsSubscription queries for logs in mined and pending blocks. + MinedAndPendingLogsSubscription + // PendingTransactionsSubscription queries tx hashes for pending + // transactions entering the pending state + PendingTransactionsSubscription + // AcceptedTransactionsSubscription queries tx hashes for accepted transactions + AcceptedTransactionsSubscription + // BlocksSubscription queries hashes for blocks that are imported + BlocksSubscription + // AcceptedBlocksSubscription queries hashes for blocks that are accepted + AcceptedBlocksSubscription + // LastSubscription keeps track of the last index + LastIndexSubscription +) + +const ( + // txChanSize is the size of channel listening to NewTxsEvent. + // The number is referenced from the size of tx pool. + txChanSize = 4096 + // rmLogsChanSize is the size of channel listening to RemovedLogsEvent. + rmLogsChanSize = 10 + // logsChanSize is the size of channel listening to LogsEvent. + logsChanSize = 10 + // chainEvChanSize is the size of channel listening to ChainEvent. + chainEvChanSize = 10 +) + +type subscription struct { + id rpc.ID + typ Type + created time.Time + logsCrit interfaces.FilterQuery + logs chan []*types.Log + hashes chan []common.Hash + headers chan *types.Header + installed chan struct{} // closed when the filter is installed + err chan error // closed when the filter is uninstalled +} + +// EventSystem creates subscriptions, processes events and broadcasts them to the +// subscription which match the subscription criteria. +type EventSystem struct { + backend Backend + lightMode bool + lastHead *types.Header + + // Subscriptions + txsSub event.Subscription // Subscription for new transaction event + logsSub event.Subscription // Subscription for new log event + logsAcceptedSub event.Subscription // Subscription for new accepted log event + rmLogsSub event.Subscription // Subscription for removed log event + pendingLogsSub event.Subscription // Subscription for pending log event + chainSub event.Subscription // Subscription for new chain event + chainAcceptedSub event.Subscription // Subscription for new chain accepted event + txsAcceptedSub event.Subscription // Subscription for new accepted txs + + // Channels + install chan *subscription // install filter for event notification + uninstall chan *subscription // remove filter for event notification + txsCh chan core.NewTxsEvent // Channel to receive new transactions event + logsCh chan []*types.Log // Channel to receive new log event + logsAcceptedCh chan []*types.Log // Channel to receive new accepted log event + pendingLogsCh chan []*types.Log // Channel to receive new log event + rmLogsCh chan core.RemovedLogsEvent // Channel to receive removed log event + chainCh chan core.ChainEvent // Channel to receive new chain event + chainAcceptedCh chan core.ChainEvent // Channel to receive new chain accepted event + txsAcceptedCh chan core.NewTxsEvent // Channel to receive new accepted txs +} + +// NewEventSystem creates a new manager that listens for event on the given mux, +// parses and filters them. It uses the all map to retrieve filter changes. The +// work loop holds its own index that is used to forward events to filters. +// +// The returned manager has a loop that needs to be stopped with the Stop function +// or by stopping the given mux. +func NewEventSystem(backend Backend, lightMode bool) *EventSystem { + m := &EventSystem{ + backend: backend, + lightMode: lightMode, + install: make(chan *subscription), + uninstall: make(chan *subscription), + txsCh: make(chan core.NewTxsEvent, txChanSize), + logsCh: make(chan []*types.Log, logsChanSize), + logsAcceptedCh: make(chan []*types.Log, logsChanSize), + rmLogsCh: make(chan core.RemovedLogsEvent, rmLogsChanSize), + pendingLogsCh: make(chan []*types.Log, logsChanSize), + chainCh: make(chan core.ChainEvent, chainEvChanSize), + chainAcceptedCh: make(chan core.ChainEvent, chainEvChanSize), + txsAcceptedCh: make(chan core.NewTxsEvent, txChanSize), + } + + // Subscribe events + m.txsSub = m.backend.SubscribeNewTxsEvent(m.txsCh) + m.logsSub = m.backend.SubscribeLogsEvent(m.logsCh) + m.logsAcceptedSub = m.backend.SubscribeAcceptedLogsEvent(m.logsAcceptedCh) + m.rmLogsSub = m.backend.SubscribeRemovedLogsEvent(m.rmLogsCh) + m.chainSub = m.backend.SubscribeChainEvent(m.chainCh) + m.chainAcceptedSub = m.backend.SubscribeChainAcceptedEvent(m.chainAcceptedCh) + m.pendingLogsSub = m.backend.SubscribePendingLogsEvent(m.pendingLogsCh) + m.txsAcceptedSub = m.backend.SubscribeAcceptedTransactionEvent(m.txsAcceptedCh) + + // Make sure none of the subscriptions are empty + if m.txsSub == nil || m.logsSub == nil || m.logsAcceptedSub == nil || m.rmLogsSub == nil || m.chainSub == nil || m.chainAcceptedSub == nil || m.pendingLogsSub == nil || m.txsAcceptedSub == nil { + log.Crit("Subscribe for event system failed") + } + + go m.eventLoop() + return m +} + +// Subscription is created when the client registers itself for a particular event. +type Subscription struct { + ID rpc.ID + f *subscription + es *EventSystem + unsubOnce sync.Once +} + +// Err returns a channel that is closed when unsubscribed. +func (sub *Subscription) Err() <-chan error { + return sub.f.err +} + +// Unsubscribe uninstalls the subscription from the event broadcast loop. +func (sub *Subscription) Unsubscribe() { + sub.unsubOnce.Do(func() { + uninstallLoop: + for { + // write uninstall request and consume logs/hashes. This prevents + // the eventLoop broadcast method to deadlock when writing to the + // filter event channel while the subscription loop is waiting for + // this method to return (and thus not reading these events). + select { + case sub.es.uninstall <- sub.f: + break uninstallLoop + case <-sub.f.logs: + case <-sub.f.hashes: + case <-sub.f.headers: + } + } + + // wait for filter to be uninstalled in work loop before returning + // this ensures that the manager won't use the event channel which + // will probably be closed by the client asap after this method returns. + <-sub.Err() + }) +} + +// subscribe installs the subscription in the event broadcast loop. +func (es *EventSystem) subscribe(sub *subscription) *Subscription { + es.install <- sub + <-sub.installed + return &Subscription{ID: sub.id, f: sub, es: es} +} + +// SubscribeLogs creates a subscription that will write all logs matching the +// given criteria to the given logs channel. Default value for the from and to +// block is "latest". If the fromBlock > toBlock an error is returned. +func (es *EventSystem) SubscribeLogs(crit interfaces.FilterQuery, logs chan []*types.Log) (*Subscription, error) { + var from, to rpc.BlockNumber + if crit.FromBlock == nil { + from = rpc.LatestBlockNumber + } else { + from = rpc.BlockNumber(crit.FromBlock.Int64()) + } + if crit.ToBlock == nil { + to = rpc.LatestBlockNumber + } else { + to = rpc.BlockNumber(crit.ToBlock.Int64()) + } + + // only interested in pending logs + if from == rpc.PendingBlockNumber && to == rpc.PendingBlockNumber { + return es.subscribePendingLogs(crit, logs), nil + } + // only interested in new mined logs + if from == rpc.LatestBlockNumber && to == rpc.LatestBlockNumber { + return es.subscribeLogs(crit, logs), nil + } + // only interested in mined logs within a specific block range + if from >= 0 && to >= 0 && to >= from { + return es.subscribeLogs(crit, logs), nil + } + // interested in mined logs from a specific block number, new logs and pending logs + if from >= rpc.LatestBlockNumber && to == rpc.PendingBlockNumber { + return es.subscribeMinedPendingLogs(crit, logs), nil + } + // interested in logs from a specific block number to new mined blocks + if from >= 0 && to == rpc.LatestBlockNumber { + return es.subscribeLogs(crit, logs), nil + } + return nil, fmt.Errorf("invalid from and to block combination: from > to") +} + +func (es *EventSystem) SubscribeAcceptedLogs(crit interfaces.FilterQuery, logs chan []*types.Log) (*Subscription, error) { + var from, to rpc.BlockNumber + if crit.FromBlock == nil { + from = rpc.LatestBlockNumber + } else { + from = rpc.BlockNumber(crit.FromBlock.Int64()) + } + if crit.ToBlock == nil { + to = rpc.LatestBlockNumber + } else { + to = rpc.BlockNumber(crit.ToBlock.Int64()) + } + + // subscribeAcceptedLogs if filter is valid (from SubscribeLogs) + if from == rpc.PendingBlockNumber && to == rpc.PendingBlockNumber || + from == rpc.LatestBlockNumber && to == rpc.LatestBlockNumber || + from >= 0 && to >= 0 && to >= from || + from >= rpc.LatestBlockNumber && to == rpc.PendingBlockNumber || + from >= 0 && to == rpc.LatestBlockNumber { + return es.subscribeAcceptedLogs(crit, logs), nil + } + + return nil, fmt.Errorf("invalid from and to block combination: from > to") +} + +func (es *EventSystem) subscribeAcceptedLogs(crit interfaces.FilterQuery, logs chan []*types.Log) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: AcceptedLogsSubscription, + logsCrit: crit, + created: time.Now(), + logs: logs, + hashes: make(chan []common.Hash), + headers: make(chan *types.Header), + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +// subscribeMinedPendingLogs creates a subscription that returned mined and +// pending logs that match the given criteria. +func (es *EventSystem) subscribeMinedPendingLogs(crit interfaces.FilterQuery, logs chan []*types.Log) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: MinedAndPendingLogsSubscription, + logsCrit: crit, + created: time.Now(), + logs: logs, + hashes: make(chan []common.Hash), + headers: make(chan *types.Header), + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +// subscribeLogs creates a subscription that will write all logs matching the +// given criteria to the given logs channel. +func (es *EventSystem) subscribeLogs(crit interfaces.FilterQuery, logs chan []*types.Log) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: LogsSubscription, + logsCrit: crit, + created: time.Now(), + logs: logs, + hashes: make(chan []common.Hash), + headers: make(chan *types.Header), + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +// subscribePendingLogs creates a subscription that writes transaction hashes for +// transactions that enter the transaction pool. +func (es *EventSystem) subscribePendingLogs(crit interfaces.FilterQuery, logs chan []*types.Log) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: PendingLogsSubscription, + logsCrit: crit, + created: time.Now(), + logs: logs, + hashes: make(chan []common.Hash), + headers: make(chan *types.Header), + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +// SubscribeNewHeads creates a subscription that writes the header of a block that is +// imported in the chain. +func (es *EventSystem) SubscribeNewHeads(headers chan *types.Header) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: BlocksSubscription, + created: time.Now(), + logs: make(chan []*types.Log), + hashes: make(chan []common.Hash), + headers: headers, + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +// SubscribeAcceptedHeads creates a subscription that writes the header of an accepted block that is +// imported in the chain. +func (es *EventSystem) SubscribeAcceptedHeads(headers chan *types.Header) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: AcceptedBlocksSubscription, + created: time.Now(), + logs: make(chan []*types.Log), + hashes: make(chan []common.Hash), + headers: headers, + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +// SubscribePendingTxs creates a subscription that writes transaction hashes for +// transactions that enter the transaction pool. +func (es *EventSystem) SubscribePendingTxs(hashes chan []common.Hash) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: PendingTransactionsSubscription, + created: time.Now(), + logs: make(chan []*types.Log), + hashes: hashes, + headers: make(chan *types.Header), + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +// SubscribeAcceptedTxs creates a subscription that writes transaction hashes for +// transactions have been accepted. +func (es *EventSystem) SubscribeAcceptedTxs(hashes chan []common.Hash) *Subscription { + sub := &subscription{ + id: rpc.NewID(), + typ: AcceptedTransactionsSubscription, + created: time.Now(), + logs: make(chan []*types.Log), + hashes: hashes, + headers: make(chan *types.Header), + installed: make(chan struct{}), + err: make(chan error), + } + return es.subscribe(sub) +} + +type filterIndex map[Type]map[rpc.ID]*subscription + +func (es *EventSystem) handleLogs(filters filterIndex, ev []*types.Log) { + if len(ev) == 0 { + return + } + for _, f := range filters[LogsSubscription] { + matchedLogs := filterLogs(ev, f.logsCrit.FromBlock, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics) + if len(matchedLogs) > 0 { + f.logs <- matchedLogs + } + } +} + +func (es *EventSystem) handleAcceptedLogs(filters filterIndex, ev []*types.Log) { + if len(ev) == 0 { + return + } + for _, f := range filters[AcceptedLogsSubscription] { + matchedLogs := filterLogs(ev, f.logsCrit.FromBlock, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics) + if len(matchedLogs) > 0 { + f.logs <- matchedLogs + } + } +} + +func (es *EventSystem) handlePendingLogs(filters filterIndex, ev []*types.Log) { + if len(ev) == 0 { + return + } + for _, f := range filters[PendingLogsSubscription] { + matchedLogs := filterLogs(ev, nil, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics) + if len(matchedLogs) > 0 { + f.logs <- matchedLogs + } + } +} + +func (es *EventSystem) handleRemovedLogs(filters filterIndex, ev core.RemovedLogsEvent) { + for _, f := range filters[LogsSubscription] { + matchedLogs := filterLogs(ev.Logs, f.logsCrit.FromBlock, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics) + if len(matchedLogs) > 0 { + f.logs <- matchedLogs + } + } +} + +func (es *EventSystem) handleTxsEvent(filters filterIndex, ev core.NewTxsEvent, accepted bool) { + hashes := make([]common.Hash, 0, len(ev.Txs)) + for _, tx := range ev.Txs { + hashes = append(hashes, tx.Hash()) + } + for _, f := range filters[PendingTransactionsSubscription] { + f.hashes <- hashes + } + if accepted { + for _, f := range filters[AcceptedTransactionsSubscription] { + f.hashes <- hashes + } + } +} + +func (es *EventSystem) handleChainEvent(filters filterIndex, ev core.ChainEvent) { + for _, f := range filters[BlocksSubscription] { + f.headers <- ev.Block.Header() + } + if es.lightMode && len(filters[LogsSubscription]) > 0 { + es.lightFilterNewHead(ev.Block.Header(), func(header *types.Header, remove bool) { + for _, f := range filters[LogsSubscription] { + if matchedLogs := es.lightFilterLogs(header, f.logsCrit.Addresses, f.logsCrit.Topics, remove); len(matchedLogs) > 0 { + f.logs <- matchedLogs + } + } + }) + } +} + +func (es *EventSystem) handleChainAcceptedEvent(filters filterIndex, ev core.ChainEvent) { + for _, f := range filters[AcceptedBlocksSubscription] { + f.headers <- ev.Block.Header() + } + if es.lightMode && len(filters[LogsSubscription]) > 0 { + es.lightFilterNewHead(ev.Block.Header(), func(header *types.Header, remove bool) { + for _, f := range filters[LogsSubscription] { + if matchedLogs := es.lightFilterLogs(header, f.logsCrit.Addresses, f.logsCrit.Topics, remove); len(matchedLogs) > 0 { + f.logs <- matchedLogs + } + } + }) + } +} + +func (es *EventSystem) lightFilterNewHead(newHeader *types.Header, callBack func(*types.Header, bool)) { + oldh := es.lastHead + es.lastHead = newHeader + if oldh == nil { + return + } + newh := newHeader + // find common ancestor, create list of rolled back and new block hashes + var oldHeaders, newHeaders []*types.Header + for oldh.Hash() != newh.Hash() { + if oldh.Number.Uint64() >= newh.Number.Uint64() { + oldHeaders = append(oldHeaders, oldh) + oldh = rawdb.ReadHeader(es.backend.ChainDb(), oldh.ParentHash, oldh.Number.Uint64()-1) + } + if oldh.Number.Uint64() < newh.Number.Uint64() { + newHeaders = append(newHeaders, newh) + newh = rawdb.ReadHeader(es.backend.ChainDb(), newh.ParentHash, newh.Number.Uint64()-1) + if newh == nil { + // happens when CHT syncing, nothing to do + newh = oldh + } + } + } + // roll back old blocks + for _, h := range oldHeaders { + callBack(h, true) + } + // check new blocks (array is in reverse order) + for i := len(newHeaders) - 1; i >= 0; i-- { + callBack(newHeaders[i], false) + } +} + +// filter logs of a single header in light client mode +func (es *EventSystem) lightFilterLogs(header *types.Header, addresses []common.Address, topics [][]common.Hash, remove bool) []*types.Log { + if bloomFilter(header.Bloom, addresses, topics) { + // Get the logs of the block + ctx, cancel := context.WithTimeout(context.Background(), time.Second*5) + defer cancel() + logsList, err := es.backend.GetLogs(ctx, header.Hash()) + if err != nil { + return nil + } + var unfiltered []*types.Log + for _, logs := range logsList { + for _, log := range logs { + logcopy := *log + logcopy.Removed = remove + unfiltered = append(unfiltered, &logcopy) + } + } + logs := filterLogs(unfiltered, nil, nil, addresses, topics) + if len(logs) > 0 && logs[0].TxHash == (common.Hash{}) { + // We have matching but non-derived logs + receipts, err := es.backend.GetReceipts(ctx, header.Hash()) + if err != nil { + return nil + } + unfiltered = unfiltered[:0] + for _, receipt := range receipts { + for _, log := range receipt.Logs { + logcopy := *log + logcopy.Removed = remove + unfiltered = append(unfiltered, &logcopy) + } + } + logs = filterLogs(unfiltered, nil, nil, addresses, topics) + } + return logs + } + return nil +} + +// eventLoop (un)installs filters and processes mux events. +func (es *EventSystem) eventLoop() { + // Ensure all subscriptions get cleaned up + defer func() { + es.txsSub.Unsubscribe() + es.logsSub.Unsubscribe() + es.logsAcceptedSub.Unsubscribe() + es.rmLogsSub.Unsubscribe() + es.pendingLogsSub.Unsubscribe() + es.chainSub.Unsubscribe() + es.chainAcceptedSub.Unsubscribe() + es.txsAcceptedSub.Unsubscribe() + }() + + index := make(filterIndex) + for i := UnknownSubscription; i < LastIndexSubscription; i++ { + index[i] = make(map[rpc.ID]*subscription) + } + + for { + select { + case ev := <-es.txsCh: + es.handleTxsEvent(index, ev, false) + case ev := <-es.logsCh: + es.handleLogs(index, ev) + case ev := <-es.logsAcceptedCh: + es.handleAcceptedLogs(index, ev) + case ev := <-es.rmLogsCh: + es.handleRemovedLogs(index, ev) + case ev := <-es.pendingLogsCh: + es.handlePendingLogs(index, ev) + case ev := <-es.chainCh: + es.handleChainEvent(index, ev) + case ev := <-es.chainAcceptedCh: + es.handleChainAcceptedEvent(index, ev) + case ev := <-es.txsAcceptedCh: + es.handleTxsEvent(index, ev, true) + + case f := <-es.install: + if f.typ == MinedAndPendingLogsSubscription { + // the type are logs and pending logs subscriptions + index[LogsSubscription][f.id] = f + index[PendingLogsSubscription][f.id] = f + } else { + index[f.typ][f.id] = f + } + close(f.installed) + + case f := <-es.uninstall: + if f.typ == MinedAndPendingLogsSubscription { + // the type are logs and pending logs subscriptions + delete(index[LogsSubscription], f.id) + delete(index[PendingLogsSubscription], f.id) + } else { + delete(index[f.typ], f.id) + } + close(f.err) + + // System stopped + case <-es.txsSub.Err(): + return + case <-es.logsSub.Err(): + return + case <-es.logsAcceptedSub.Err(): + return + case <-es.rmLogsSub.Err(): + return + case <-es.chainSub.Err(): + return + case <-es.chainAcceptedSub.Err(): + return + case <-es.txsAcceptedSub.Err(): + return + } + } +} diff --git a/eth/gasprice/feehistory.go b/eth/gasprice/feehistory.go new file mode 100644 index 0000000000..35b231ef87 --- /dev/null +++ b/eth/gasprice/feehistory.go @@ -0,0 +1,314 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package gasprice + +import ( + "context" + "encoding/binary" + "errors" + "fmt" + "math" + "math/big" + "sort" + "sync/atomic" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +var ( + errInvalidPercentile = errors.New("invalid reward percentile") + errRequestBeyondHead = errors.New("request beyond head block") +) + +const ( + // maxBlockFetchers is the max number of goroutines to spin up to pull blocks + // for the fee history calculation (mostly relevant for LES). + maxBlockFetchers = 4 +) + +// blockFees represents a single block for processing +type blockFees struct { + // set by the caller + blockNumber uint64 + header *types.Header + block *types.Block // only set if reward percentiles are requested + receipts types.Receipts + // filled by processBlock + results processedFees + err error +} + +// processedFees contains the results of a processed block and is also used for caching +type processedFees struct { + reward []*big.Int + baseFee *big.Int + gasUsedRatio float64 +} + +// txGasAndReward is sorted in ascending order based on reward +type ( + txGasAndReward struct { + gasUsed uint64 + reward *big.Int + } + sortGasAndReward []txGasAndReward +) + +func (s sortGasAndReward) Len() int { return len(s) } +func (s sortGasAndReward) Swap(i, j int) { + s[i], s[j] = s[j], s[i] +} + +func (s sortGasAndReward) Less(i, j int) bool { + return s[i].reward.Cmp(s[j].reward) < 0 +} + +// processBlock takes a blockFees structure with the blockNumber, the header and optionally +// the block field filled in, retrieves the block from the backend if not present yet and +// fills in the rest of the fields. +func (oracle *Oracle) processBlock(bf *blockFees, percentiles []float64) { + if bf.results.baseFee = bf.header.BaseFee; bf.results.baseFee == nil { + bf.results.baseFee = new(big.Int) + } + bf.results.gasUsedRatio = float64(bf.header.GasUsed) / float64(bf.header.GasLimit) + if len(percentiles) == 0 { + // rewards were not requested, return null + return + } + if bf.block == nil || (bf.receipts == nil && len(bf.block.Transactions()) != 0) { + log.Error("Block or receipts are missing while reward percentiles are requested") + return + } + + bf.results.reward = make([]*big.Int, len(percentiles)) + if len(bf.block.Transactions()) == 0 { + // return an all zero row if there are no transactions to gather data from + for i := range bf.results.reward { + bf.results.reward[i] = new(big.Int) + } + return + } + + sorter := make(sortGasAndReward, len(bf.block.Transactions())) + for i, tx := range bf.block.Transactions() { + reward, _ := tx.EffectiveGasTip(bf.block.BaseFee()) + sorter[i] = txGasAndReward{gasUsed: bf.receipts[i].GasUsed, reward: reward} + } + sort.Sort(sorter) + + var txIndex int + sumGasUsed := sorter[0].gasUsed + + for i, p := range percentiles { + thresholdGasUsed := uint64(float64(bf.block.GasUsed()) * p / 100) + for sumGasUsed < thresholdGasUsed && txIndex < len(bf.block.Transactions())-1 { + txIndex++ + sumGasUsed += sorter[txIndex].gasUsed + } + bf.results.reward[i] = sorter[txIndex].reward + } +} + +// resolveBlockRange resolves the specified block range to absolute block numbers while also +// enforcing backend specific limitations. The pending block and corresponding receipts are +// also returned if requested and available. +// Note: an error is only returned if retrieving the head header has failed. If there are no +// retrievable blocks in the specified range then zero block count is returned with no error. +func (oracle *Oracle) resolveBlockRange(ctx context.Context, lastBlock rpc.BlockNumber, blocks int) (*types.Block, []*types.Receipt, uint64, int, error) { + var ( + headBlock rpc.BlockNumber + pendingBlock *types.Block + pendingReceipts types.Receipts + ) + // query either pending block or head header and set headBlock + if lastBlock == rpc.PendingBlockNumber { + if pendingBlock, pendingReceipts = oracle.backend.PendingBlockAndReceipts(); pendingBlock != nil { + lastBlock = rpc.BlockNumber(pendingBlock.NumberU64()) + headBlock = lastBlock - 1 + } else { + // pending block not supported by backend, process until latest block + lastBlock = rpc.LatestBlockNumber + blocks-- + if blocks == 0 { + return nil, nil, 0, 0, nil + } + } + } + if pendingBlock == nil { + // if pending block is not fetched then we retrieve the head header to get the head block number + if latestHeader, err := oracle.backend.HeaderByNumber(ctx, rpc.LatestBlockNumber); err == nil { + headBlock = rpc.BlockNumber(latestHeader.Number.Uint64()) + } else { + return nil, nil, 0, 0, err + } + } + if lastBlock == rpc.LatestBlockNumber { + lastBlock = headBlock + } else if pendingBlock == nil && lastBlock > headBlock { + return nil, nil, 0, 0, fmt.Errorf("%w: requested %d, head %d", errRequestBeyondHead, lastBlock, headBlock) + } + // ensure not trying to retrieve before genesis + if rpc.BlockNumber(blocks) > lastBlock+1 { + blocks = int(lastBlock + 1) + } + return pendingBlock, pendingReceipts, uint64(lastBlock), blocks, nil +} + +// FeeHistory returns data relevant for fee estimation based on the specified range of blocks. +// The range can be specified either with absolute block numbers or ending with the latest +// or pending block. Backends may or may not support gathering data from the pending block +// or blocks older than a certain age (specified in maxHistory). The first block of the +// actually processed range is returned to avoid ambiguity when parts of the requested range +// are not available or when the head has changed during processing this request. +// Three arrays are returned based on the processed blocks: +// - reward: the requested percentiles of effective priority fees per gas of transactions in each +// block, sorted in ascending order and weighted by gas used. +// - baseFee: base fee per gas in the given block +// - gasUsedRatio: gasUsed/gasLimit in the given block +// Note: baseFee includes the next block after the newest of the returned range, because this +// value can be derived from the newest block. +func (oracle *Oracle) FeeHistory(ctx context.Context, blocks int, unresolvedLastBlock rpc.BlockNumber, rewardPercentiles []float64) (*big.Int, [][]*big.Int, []*big.Int, []float64, error) { + if blocks < 1 { + return common.Big0, nil, nil, nil, nil // returning with no data and no error means there are no retrievable blocks + } + maxFeeHistory := oracle.maxHeaderHistory + if len(rewardPercentiles) != 0 { + maxFeeHistory = oracle.maxBlockHistory + } + if blocks > maxFeeHistory { + log.Warn("Sanitizing fee history length", "requested", blocks, "truncated", maxFeeHistory) + blocks = maxFeeHistory + } + for i, p := range rewardPercentiles { + if p < 0 || p > 100 { + return common.Big0, nil, nil, nil, fmt.Errorf("%w: %f", errInvalidPercentile, p) + } + if i > 0 && p < rewardPercentiles[i-1] { + return common.Big0, nil, nil, nil, fmt.Errorf("%w: #%d:%f > #%d:%f", errInvalidPercentile, i-1, rewardPercentiles[i-1], i, p) + } + } + var ( + pendingBlock *types.Block + pendingReceipts []*types.Receipt + err error + ) + pendingBlock, pendingReceipts, lastBlock, blocks, err := oracle.resolveBlockRange(ctx, unresolvedLastBlock, blocks) + if err != nil || blocks == 0 { + return common.Big0, nil, nil, nil, err + } + oldestBlock := lastBlock + 1 - uint64(blocks) + + var ( + next = oldestBlock + results = make(chan *blockFees, blocks) + ) + percentileKey := make([]byte, 8*len(rewardPercentiles)) + for i, p := range rewardPercentiles { + binary.LittleEndian.PutUint64(percentileKey[i*8:(i+1)*8], math.Float64bits(p)) + } + for i := 0; i < maxBlockFetchers && i < blocks; i++ { + go func() { + for { + // Retrieve the next block number to fetch with this goroutine + blockNumber := atomic.AddUint64(&next, 1) - 1 + if blockNumber > lastBlock { + return + } + + fees := &blockFees{blockNumber: blockNumber} + if pendingBlock != nil && blockNumber >= pendingBlock.NumberU64() { + fees.block, fees.receipts = pendingBlock, pendingReceipts + fees.header = fees.block.Header() + oracle.processBlock(fees, rewardPercentiles) + results <- fees + } else { + cacheKey := struct { + number uint64 + percentiles string + }{blockNumber, string(percentileKey)} + + if p, ok := oracle.historyCache.Get(cacheKey); ok { + fees.results = p.(processedFees) + results <- fees + } else { + if len(rewardPercentiles) != 0 { + fees.block, fees.err = oracle.backend.BlockByNumber(ctx, rpc.BlockNumber(blockNumber)) + if fees.block != nil && fees.err == nil { + fees.receipts, fees.err = oracle.backend.GetReceipts(ctx, fees.block.Hash()) + fees.header = fees.block.Header() + } + } else { + fees.header, fees.err = oracle.backend.HeaderByNumber(ctx, rpc.BlockNumber(blockNumber)) + } + if fees.header != nil && fees.err == nil { + oracle.processBlock(fees, rewardPercentiles) + if fees.err == nil { + oracle.historyCache.Add(cacheKey, fees.results) + } + } + // send to results even if empty to guarantee that blocks items are sent in total + results <- fees + } + } + } + }() + } + var ( + reward = make([][]*big.Int, blocks) + baseFee = make([]*big.Int, blocks) + gasUsedRatio = make([]float64, blocks) + firstMissing = blocks + ) + for ; blocks > 0; blocks-- { + fees := <-results + if fees.err != nil { + return common.Big0, nil, nil, nil, fees.err + } + i := int(fees.blockNumber - oldestBlock) + if fees.results.baseFee != nil { + reward[i], baseFee[i], gasUsedRatio[i] = fees.results.reward, fees.results.baseFee, fees.results.gasUsedRatio + } else { + // getting no block and no error means we are requesting into the future (might happen because of a reorg) + if i < firstMissing { + firstMissing = i + } + } + } + if firstMissing == 0 { + return common.Big0, nil, nil, nil, nil + } + if len(rewardPercentiles) != 0 { + reward = reward[:firstMissing] + } else { + reward = nil + } + baseFee, gasUsedRatio = baseFee[:firstMissing], gasUsedRatio[:firstMissing] + return new(big.Int).SetUint64(oldestBlock), reward, baseFee, gasUsedRatio, nil +} diff --git a/eth/gasprice/feehistory_test.go b/eth/gasprice/feehistory_test.go new file mode 100644 index 0000000000..1f2f42c950 --- /dev/null +++ b/eth/gasprice/feehistory_test.go @@ -0,0 +1,126 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package gasprice + +import ( + "context" + "errors" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" +) + +func TestFeeHistory(t *testing.T) { + cases := []struct { + pending bool + maxHeader, maxBlock int + count int + last rpc.BlockNumber + percent []float64 + expFirst uint64 + expCount int + expErr error + }{ + {false, 1000, 1000, 10, 30, nil, 21, 10, nil}, + {false, 1000, 1000, 10, 30, []float64{0, 10}, 21, 10, nil}, + {false, 1000, 1000, 10, 30, []float64{20, 10}, 0, 0, errInvalidPercentile}, + {false, 1000, 1000, 1000000000, 30, nil, 0, 31, nil}, + {false, 1000, 1000, 1000000000, rpc.LatestBlockNumber, nil, 0, 33, nil}, + {false, 1000, 1000, 10, 40, nil, 0, 0, errRequestBeyondHead}, + {true, 1000, 1000, 10, 40, nil, 0, 0, errRequestBeyondHead}, + {false, 20, 2, 100, rpc.LatestBlockNumber, nil, 13, 20, nil}, + {false, 20, 2, 100, rpc.LatestBlockNumber, []float64{0, 10}, 31, 2, nil}, + {false, 20, 2, 100, 32, []float64{0, 10}, 31, 2, nil}, + {false, 1000, 1000, 1, rpc.PendingBlockNumber, nil, 0, 0, nil}, + {false, 1000, 1000, 2, rpc.PendingBlockNumber, nil, 32, 1, nil}, + {true, 1000, 1000, 2, rpc.PendingBlockNumber, nil, 32, 1, nil}, + {true, 1000, 1000, 2, rpc.PendingBlockNumber, []float64{0, 10}, 32, 1, nil}, + } + for i, c := range cases { + config := Config{ + MaxHeaderHistory: c.maxHeader, + MaxBlockHistory: c.maxBlock, + } + tip := big.NewInt(1 * params.GWei) + backend := newTestBackendFakerEngine(t, params.TestChainConfig, 32, func(i int, b *core.BlockGen) { + signer := types.LatestSigner(params.TestChainConfig) + + b.SetCoinbase(common.Address{1}) + + baseFee := b.BaseFee() + feeCap := new(big.Int).Add(baseFee, tip) + + var tx *types.Transaction + txdata := &types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasFeeCap: feeCap, + GasTipCap: tip, + Data: []byte{}, + } + tx = types.NewTx(txdata) + tx, err := types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %v", err) + } + b.AddTx(tx) + }) + oracle := NewOracle(backend, config) + + first, reward, baseFee, ratio, err := oracle.FeeHistory(context.Background(), c.count, c.last, c.percent) + + expReward := c.expCount + if len(c.percent) == 0 { + expReward = 0 + } + expBaseFee := c.expCount + + if first.Uint64() != c.expFirst { + t.Fatalf("Test case %d: first block mismatch, want %d, got %d", i, c.expFirst, first) + } + if len(reward) != expReward { + t.Fatalf("Test case %d: reward array length mismatch, want %d, got %d", i, expReward, len(reward)) + } + if len(baseFee) != expBaseFee { + t.Fatalf("Test case %d: baseFee array length mismatch, want %d, got %d", i, expBaseFee, len(baseFee)) + } + if len(ratio) != c.expCount { + t.Fatalf("Test case %d: gasUsedRatio array length mismatch, want %d, got %d", i, c.expCount, len(ratio)) + } + if err != c.expErr && !errors.Is(err, c.expErr) { + t.Fatalf("Test case %d: error mismatch, want %v, got %v", i, c.expErr, err) + } + } +} diff --git a/eth/gasprice/gasprice.go b/eth/gasprice/gasprice.go new file mode 100644 index 0000000000..703d83c643 --- /dev/null +++ b/eth/gasprice/gasprice.go @@ -0,0 +1,382 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package gasprice + +import ( + "context" + "math/big" + "sort" + "sync" + + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" + lru "github.com/hashicorp/golang-lru" +) + +var ( + DefaultMaxPrice = big.NewInt(150 * params.GWei) + DefaultMinPrice = big.NewInt(0 * params.GWei) + DefaultMinGasUsed = big.NewInt(6_000_000) // block gas limit is 8,000,000 +) + +type Config struct { + Blocks int + Percentile int + MaxHeaderHistory int + MaxBlockHistory int + MaxPrice *big.Int `toml:",omitempty"` + MinPrice *big.Int `toml:",omitempty"` + MinGasUsed *big.Int `toml:",omitempty"` +} + +// OracleBackend includes all necessary background APIs for oracle. +type OracleBackend interface { + HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) + BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) + GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) + PendingBlockAndReceipts() (*types.Block, types.Receipts) + ChainConfig() *params.ChainConfig + SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription + MinRequiredTip(ctx context.Context, header *types.Header) (*big.Int, error) +} + +// Oracle recommends gas prices based on the content of recent +// blocks. Suitable for both light and full clients. +type Oracle struct { + backend OracleBackend + lastHead common.Hash + lastPrice *big.Int + lastBaseFee *big.Int + // [minPrice] ensures we don't get into a positive feedback loop where tips + // sink to 0 during a period of slow block production, such that nobody's + // transactions will be included until the full block fee duration has + // elapsed. + minPrice *big.Int + maxPrice *big.Int + // [minGasUsed] ensures we don't recommend users pay non-zero tips when other + // users are paying a tip to unnecessarily expedite block production. + minGasUsed *big.Int + cacheLock sync.RWMutex + fetchLock sync.Mutex + + // clock to decide what set of rules to use when recommending a gas price + clock mockable.Clock + + checkBlocks, percentile int + maxHeaderHistory, maxBlockHistory int + historyCache *lru.Cache +} + +// NewOracle returns a new gasprice oracle which can recommend suitable +// gasprice for newly created transaction. +func NewOracle(backend OracleBackend, config Config) *Oracle { + blocks := config.Blocks + if blocks < 1 { + blocks = 1 + log.Warn("Sanitizing invalid gasprice oracle sample blocks", "provided", config.Blocks, "updated", blocks) + } + percent := config.Percentile + if percent < 0 { + percent = 0 + log.Warn("Sanitizing invalid gasprice oracle sample percentile", "provided", config.Percentile, "updated", percent) + } + if percent > 100 { + percent = 100 + log.Warn("Sanitizing invalid gasprice oracle sample percentile", "provided", config.Percentile, "updated", percent) + } + maxPrice := config.MaxPrice + if maxPrice == nil || maxPrice.Int64() <= 0 { + maxPrice = DefaultMaxPrice + log.Warn("Sanitizing invalid gasprice oracle max price", "provided", config.MaxPrice, "updated", maxPrice) + } + minPrice := config.MinPrice + if minPrice == nil || minPrice.Int64() < 0 { + minPrice = DefaultMinPrice + log.Warn("Sanitizing invalid gasprice oracle min price", "provided", config.MinPrice, "updated", minPrice) + } + minGasUsed := config.MinGasUsed + if minGasUsed == nil || minGasUsed.Int64() < 0 { + minGasUsed = DefaultMinGasUsed + log.Warn("Sanitizing invalid gasprice oracle min gas used", "provided", config.MinGasUsed, "updated", minGasUsed) + } + + cache, _ := lru.New(2048) + headEvent := make(chan core.ChainHeadEvent, 1) + backend.SubscribeChainHeadEvent(headEvent) + go func() { + var lastHead common.Hash + for ev := range headEvent { + if ev.Block.ParentHash() != lastHead { + cache.Purge() + } + lastHead = ev.Block.Hash() + } + }() + minBaseFee := backend.ChainConfig().GetFeeConfig().MinBaseFee + return &Oracle{ + backend: backend, + lastPrice: minPrice, + lastBaseFee: new(big.Int).Set(minBaseFee), + minPrice: minPrice, + maxPrice: maxPrice, + minGasUsed: minGasUsed, + checkBlocks: blocks, + percentile: percent, + maxHeaderHistory: config.MaxHeaderHistory, + maxBlockHistory: config.MaxBlockHistory, + historyCache: cache, + } +} + +// EstiamteBaseFee returns an estimate of what the base fee will be on a block +// produced at the current time. If SubnetEVM has not been activated, it may +// return a nil value and a nil error. +func (oracle *Oracle) EstimateBaseFee(ctx context.Context) (*big.Int, error) { + _, baseFee, err := oracle.suggestDynamicFees(ctx) + if err != nil { + return nil, err + } + + // We calculate the [nextBaseFee] if a block were to be produced immediately. + // If [nextBaseFee] is lower than the estimate from sampling, then we return it + // to prevent returning an incorrectly high fee when the network is quiescent. + nextBaseFee, err := oracle.estimateNextBaseFee(ctx) + if err != nil { + log.Warn("failed to estimate next base fee", "err", err) + return baseFee, nil + } + // If base fees have not been enabled, return a nil value. + if nextBaseFee == nil { + return nil, nil + } + + baseFee = math.BigMin(baseFee, nextBaseFee) + return baseFee, nil +} + +// estimateNextBaseFee calculates what the base fee should be on the next block if it +// were produced immediately. If the current time is less than the timestamp of the latest +// block, this esimtate uses the timestamp of the latest block instead. +// If the latest block has a nil base fee, this function will return nil as the base fee +// of the next block. +func (oracle *Oracle) estimateNextBaseFee(ctx context.Context) (*big.Int, error) { + // Fetch the most recent block by number + block, err := oracle.backend.BlockByNumber(ctx, rpc.LatestBlockNumber) + if err != nil { + return nil, err + } + // If the fetched block does not have a base fee, return nil as the base fee + if block.BaseFee() == nil { + return nil, nil + } + + // If the current time is prior to the parent timestamp, then we use the parent + // timestamp instead. + header := block.Header() + timestamp := oracle.clock.Unix() + if timestamp < header.Time { + timestamp = header.Time + } + // If the block does have a baseFee, calculate the next base fee + // based on the current time and add it to the tip to estimate the + // total gas price estimate. + _, nextBaseFee, err := dummy.CalcBaseFee(oracle.backend.ChainConfig(), header, timestamp) + return nextBaseFee, err +} + +// SuggestPrice returns an estimated price for legacy transactions. +func (oracle *Oracle) SuggestPrice(ctx context.Context) (*big.Int, error) { + // Estimate the effective tip based on recent blocks. + tip, baseFee, err := oracle.suggestDynamicFees(ctx) + if err != nil { + return nil, err + } + + // We calculate the [nextBaseFee] if a block were to be produced immediately. + // If [nextBaseFee] is lower than the estimate from sampling, then we return it + // to prevent returning an incorrectly high fee when the network is quiescent. + nextBaseFee, err := oracle.estimateNextBaseFee(ctx) + if err != nil { + log.Warn("failed to estimate next base fee", "err", err) + } + // Separately from checking the error value, check that [nextBaseFee] is non-nil + // before attempting to take the minimum. + if nextBaseFee != nil { + baseFee = math.BigMin(baseFee, nextBaseFee) + } + + return new(big.Int).Add(tip, baseFee), nil +} + +// SuggestTipCap returns a tip cap so that newly created transaction can have a +// very high chance to be included in the following blocks. +// +// Note, for legacy transactions and the legacy eth_gasPrice RPC call, it will be +// necessary to add the basefee to the returned number to fall back to the legacy +// behavior. +func (oracle *Oracle) SuggestTipCap(ctx context.Context) (*big.Int, error) { + tip, _, err := oracle.suggestDynamicFees(ctx) + return tip, err +} + +// suggestDynamicFees estimates the gas tip and base fee based on a simple sampling method +func (oracle *Oracle) suggestDynamicFees(ctx context.Context) (*big.Int, *big.Int, error) { + head, _ := oracle.backend.HeaderByNumber(ctx, rpc.LatestBlockNumber) + headHash := head.Hash() + + // If the latest gasprice is still available, return it. + oracle.cacheLock.RLock() + lastHead, lastPrice, lastBaseFee := oracle.lastHead, oracle.lastPrice, oracle.lastBaseFee + oracle.cacheLock.RUnlock() + if headHash == lastHead { + return new(big.Int).Set(lastPrice), new(big.Int).Set(lastBaseFee), nil + } + oracle.fetchLock.Lock() + defer oracle.fetchLock.Unlock() + + // Try checking the cache again, maybe the last fetch fetched what we need + oracle.cacheLock.RLock() + lastHead, lastPrice, lastBaseFee = oracle.lastHead, oracle.lastPrice, oracle.lastBaseFee + oracle.cacheLock.RUnlock() + if headHash == lastHead { + return new(big.Int).Set(lastPrice), new(big.Int).Set(lastBaseFee), nil + } + var ( + sent, exp int + number = head.Number.Uint64() + result = make(chan results, oracle.checkBlocks) + quit = make(chan struct{}) + tipResults []*big.Int + baseFeeResults []*big.Int + ) + for sent < oracle.checkBlocks && number > 0 { + go oracle.getBlockTips(ctx, number, result, quit) + sent++ + exp++ + number-- + } + for exp > 0 { + res := <-result + if res.err != nil { + close(quit) + return new(big.Int).Set(lastPrice), new(big.Int).Set(lastBaseFee), res.err + } + exp-- + if res.tip != nil { + tipResults = append(tipResults, res.tip) + } else { + tipResults = append(tipResults, new(big.Int).Set(common.Big0)) + } + + if res.baseFee != nil { + baseFeeResults = append(baseFeeResults, res.baseFee) + } else { + baseFeeResults = append(baseFeeResults, new(big.Int).Set(common.Big0)) + } + } + price := lastPrice + baseFee := lastBaseFee + if len(tipResults) > 0 { + sort.Sort(bigIntArray(tipResults)) + price = tipResults[(len(tipResults)-1)*oracle.percentile/100] + } + + if len(baseFeeResults) > 0 { + sort.Sort(bigIntArray(baseFeeResults)) + baseFee = baseFeeResults[(len(baseFeeResults)-1)*oracle.percentile/100] + } + if price.Cmp(oracle.maxPrice) > 0 { + price = new(big.Int).Set(oracle.maxPrice) + } + if price.Cmp(oracle.minPrice) < 0 { + price = new(big.Int).Set(oracle.minPrice) + } + oracle.cacheLock.Lock() + oracle.lastHead = headHash + oracle.lastPrice = price + oracle.lastBaseFee = baseFee + oracle.cacheLock.Unlock() + + return new(big.Int).Set(price), new(big.Int).Set(baseFee), nil +} + +type results struct { + tip *big.Int + baseFee *big.Int + err error +} + +// getBlockTips calculates the minimum required tip to be included in a given +// block and sends the value to the result channel. +func (oracle *Oracle) getBlockTips(ctx context.Context, blockNum uint64, result chan results, quit chan struct{}) { + header, err := oracle.backend.HeaderByNumber(ctx, rpc.BlockNumber(blockNum)) + if header == nil { + select { + case result <- results{nil, nil, err}: + case <-quit: + } + return + } + + // Don't bias the estimate with blocks containing a limited number of transactions paying to + // expedite block production. + if header.GasUsed < oracle.minGasUsed.Uint64() { + select { + case result <- results{nil, header.BaseFee, nil}: + case <-quit: + } + return + } + + // Compute minimum required tip to be included in previous block + // + // NOTE: Using this approach, we will never recommend that the caller + // provides a non-zero tip unless some block is produced faster than the + // target rate (which could only occur if some set of callers manually override the + // suggested tip). In the future, we may wish to start suggesting a non-zero + // tip when most blocks are full otherwise callers may observe an unexpected + // delay in transaction inclusion. + minTip, err := oracle.backend.MinRequiredTip(ctx, header) + select { + case result <- results{minTip, header.BaseFee, err}: + case <-quit: + } +} + +type bigIntArray []*big.Int + +func (s bigIntArray) Len() int { return len(s) } +func (s bigIntArray) Less(i, j int) bool { return s[i].Cmp(s[j]) < 0 } +func (s bigIntArray) Swap(i, j int) { s[i], s[j] = s[j], s[i] } diff --git a/eth/gasprice/gasprice_test.go b/eth/gasprice/gasprice_test.go new file mode 100644 index 0000000000..a801722236 --- /dev/null +++ b/eth/gasprice/gasprice_test.go @@ -0,0 +1,414 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package gasprice + +import ( + "context" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/event" +) + +const testHead = 32 + +var ( + key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + addr = crypto.PubkeyToAddress(key.PublicKey) + bal, _ = new(big.Int).SetString("100000000000000000000000", 10) +) + +type testBackend struct { + chain *core.BlockChain + pending bool // pending block available +} + +func (b *testBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) { + if number == rpc.LatestBlockNumber { + return b.chain.CurrentBlock().Header(), nil + } + return b.chain.GetHeaderByNumber(uint64(number)), nil +} + +func (b *testBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) { + if number == rpc.LatestBlockNumber { + return b.chain.CurrentBlock(), nil + } + return b.chain.GetBlockByNumber(uint64(number)), nil +} + +func (b *testBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) { + return b.chain.GetReceiptsByHash(hash), nil +} + +func (b *testBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts) { + if b.pending { + block := b.chain.GetBlockByNumber(testHead + 1) + return block, b.chain.GetReceiptsByHash(block.Hash()) + } + return nil, nil +} + +func (b *testBackend) ChainConfig() *params.ChainConfig { + return b.chain.Config() +} + +func (b *testBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription { + return nil +} + +func newTestBackendFakerEngine(t *testing.T, config *params.ChainConfig, numBlocks int, genBlocks func(i int, b *core.BlockGen)) *testBackend { + gspec := &core.Genesis{ + Config: config, + Alloc: core.GenesisAlloc{addr: core.GenesisAccount{Balance: bal}}, + } + + engine := dummy.NewETHFaker() + db := rawdb.NewMemoryDatabase() + genesis := gspec.MustCommit(db) + + // Generate testing blocks + blocks, _, err := core.GenerateChain(gspec.Config, genesis, engine, db, numBlocks, 0, genBlocks) + if err != nil { + t.Fatal(err) + } + // Construct testing chain + diskdb := rawdb.NewMemoryDatabase() + gspec.Commit(diskdb) + chain, err := core.NewBlockChain(diskdb, core.DefaultCacheConfig, gspec.Config, engine, vm.Config{}, common.Hash{}) + if err != nil { + t.Fatalf("Failed to create local chain, %v", err) + } + if _, err := chain.InsertChain(blocks); err != nil { + t.Fatalf("Failed to insert chain, %v", err) + } + return &testBackend{chain: chain} +} + +func newTestBackend(t *testing.T, config *params.ChainConfig, numBlocks int, genBlocks func(i int, b *core.BlockGen)) *testBackend { + gspec := &core.Genesis{ + Config: config, + Alloc: core.GenesisAlloc{addr: core.GenesisAccount{Balance: bal}}, + } + + engine := dummy.NewEngine() + db := rawdb.NewMemoryDatabase() + genesis := gspec.MustCommit(db) + + // Generate testing blocks + blocks, _, err := core.GenerateChain(gspec.Config, genesis, engine, db, numBlocks, 0, genBlocks) + if err != nil { + t.Fatal(err) + } + // Construct testing chain + diskdb := rawdb.NewMemoryDatabase() + gspec.Commit(diskdb) + chain, err := core.NewBlockChain(diskdb, core.DefaultCacheConfig, gspec.Config, engine, vm.Config{}, common.Hash{}) + if err != nil { + t.Fatalf("Failed to create local chain, %v", err) + } + if _, err := chain.InsertChain(blocks); err != nil { + t.Fatalf("Failed to insert chain, %v", err) + } + return &testBackend{chain: chain} +} + +func (b *testBackend) MinRequiredTip(ctx context.Context, header *types.Header) (*big.Int, error) { + return dummy.MinRequiredTip(b.chain.Config(), header) +} + +func (b *testBackend) CurrentHeader() *types.Header { + return b.chain.CurrentHeader() +} + +func (b *testBackend) GetBlockByNumber(number uint64) *types.Block { + return b.chain.GetBlockByNumber(number) +} + +type suggestTipCapTest struct { + chainConfig *params.ChainConfig + numBlocks int + genBlock func(i int, b *core.BlockGen) + expectedTip *big.Int +} + +func applyGasPriceTest(t *testing.T, test suggestTipCapTest) { + config := Config{ + Blocks: 20, + Percentile: 60, + } + + if test.genBlock == nil { + test.genBlock = func(i int, b *core.BlockGen) {} + } + backend := newTestBackend(t, test.chainConfig, test.numBlocks, test.genBlock) + oracle := NewOracle(backend, config) + + got, err := oracle.SuggestTipCap(context.Background()) + if err != nil { + t.Fatal(err) + } + if got.Cmp(test.expectedTip) != 0 { + t.Fatalf("Expected tip (%d), got tip (%d)", test.expectedTip, got) + } +} + +func TestSuggestTipCapNetworkUpgrades(t *testing.T) { + tests := map[string]suggestTipCapTest{ + "subnet evm": { + chainConfig: params.TestChainConfig, + expectedTip: DefaultMinPrice, + }, + } + + for name, test := range tests { + t.Run(name, func(t *testing.T) { + applyGasPriceTest(t, test) + }) + } +} + +func TestSuggestTipCap(t *testing.T) { + txTip := big.NewInt(55 * params.GWei) + applyGasPriceTest(t, suggestTipCapTest{ + chainConfig: params.TestChainConfig, + numBlocks: 3, + genBlock: func(i int, b *core.BlockGen) { + b.SetCoinbase(common.Address{1}) + + signer := types.LatestSigner(params.TestChainConfig) + baseFee := b.BaseFee() + feeCap := new(big.Int).Add(baseFee, txTip) + for j := 0; j < 370; j++ { + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasFeeCap: feeCap, + GasTipCap: txTip, + Data: []byte{}, + }) + tx, err := types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %s", err) + } + b.AddTx(tx) + } + }, + expectedTip: big.NewInt(1_287_001_287), + }) +} + +func TestSuggestTipCapSimple(t *testing.T) { + txTip := big.NewInt(55 * params.GWei) + applyGasPriceTest(t, suggestTipCapTest{ + chainConfig: params.TestChainConfig, + numBlocks: 3, + genBlock: func(i int, b *core.BlockGen) { + b.SetCoinbase(common.Address{1}) + + signer := types.LatestSigner(params.TestChainConfig) + baseFee := b.BaseFee() + feeCap := new(big.Int).Add(baseFee, txTip) + for j := 0; j < 370; j++ { + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasFeeCap: feeCap, + GasTipCap: txTip, + Data: []byte{}, + }) + tx, err := types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %s", err) + } + b.AddTx(tx) + } + }, + expectedTip: big.NewInt(1_287_001_287), + }) +} + +func TestSuggestTipCapSimpleFloor(t *testing.T) { + txTip := big.NewInt(55 * params.GWei) + applyGasPriceTest(t, suggestTipCapTest{ + chainConfig: params.TestChainConfig, + numBlocks: 1, + genBlock: func(i int, b *core.BlockGen) { + b.SetCoinbase(common.Address{1}) + + signer := types.LatestSigner(params.TestChainConfig) + baseFee := b.BaseFee() + feeCap := new(big.Int).Add(baseFee, txTip) + for j := 0; j < 370; j++ { + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasFeeCap: feeCap, + GasTipCap: txTip, + Data: []byte{}, + }) + tx, err := types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %s", err) + } + b.AddTx(tx) + } + }, + expectedTip: common.Big0, + }) +} + +func TestSuggestTipCapSmallTips(t *testing.T) { + tip := big.NewInt(550 * params.GWei) + applyGasPriceTest(t, suggestTipCapTest{ + chainConfig: params.TestChainConfig, + numBlocks: 3, + genBlock: func(i int, b *core.BlockGen) { + b.SetCoinbase(common.Address{1}) + + signer := types.LatestSigner(params.TestChainConfig) + baseFee := b.BaseFee() + feeCap := new(big.Int).Add(baseFee, tip) + for j := 0; j < 185; j++ { + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasFeeCap: feeCap, + GasTipCap: tip, + Data: []byte{}, + }) + tx, err := types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %s", err) + } + b.AddTx(tx) + tx = types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasFeeCap: feeCap, + GasTipCap: common.Big1, + Data: []byte{}, + }) + tx, err = types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %s", err) + } + b.AddTx(tx) + } + }, + // NOTE: small tips do not bias estimate + expectedTip: big.NewInt(1_287_001_287), + }) +} + +func TestSuggestTipCapMinGas(t *testing.T) { + txTip := big.NewInt(500 * params.GWei) + applyGasPriceTest(t, suggestTipCapTest{ + chainConfig: params.TestChainConfig, + numBlocks: 3, + genBlock: func(i int, b *core.BlockGen) { + b.SetCoinbase(common.Address{1}) + + signer := types.LatestSigner(params.TestChainConfig) + baseFee := b.BaseFee() + feeCap := new(big.Int).Add(baseFee, txTip) + for j := 0; j < 50; j++ { + tx := types.NewTx(&types.DynamicFeeTx{ + ChainID: params.TestChainConfig.ChainID, + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasFeeCap: feeCap, + GasTipCap: txTip, + Data: []byte{}, + }) + tx, err := types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %s", err) + } + b.AddTx(tx) + } + }, + expectedTip: big.NewInt(0), + }) +} + +// Regression test to ensure that SuggestPrice does not panic prior to activation of Subnet EVM +// Note: support for gas estimation without activated hard forks has been deprecated, but we still +// ensure that the call does not panic. +func TestSuggestGasPricePreSubnetEVM(t *testing.T) { + config := Config{ + Blocks: 20, + Percentile: 60, + } + + backend := newTestBackend(t, params.TestPreSubnetEVMConfig, 3, func(i int, b *core.BlockGen) { + b.SetCoinbase(common.Address{1}) + + signer := types.LatestSigner(params.TestPreSubnetEVMConfig) + gasPrice := big.NewInt(params.MinGasPrice) + for j := 0; j < 50; j++ { + tx := types.NewTx(&types.LegacyTx{ + Nonce: b.TxNonce(addr), + To: &common.Address{}, + Gas: params.TxGas, + GasPrice: gasPrice, + Data: []byte{}, + }) + tx, err := types.SignTx(tx, signer, key) + if err != nil { + t.Fatalf("failed to create tx: %s", err) + } + b.AddTx(tx) + } + }) + oracle := NewOracle(backend, config) + + _, err := oracle.SuggestPrice(context.Background()) + if err != nil { + t.Fatal(err) + } +} diff --git a/eth/state_accessor.go b/eth/state_accessor.go new file mode 100644 index 0000000000..7ada097a11 --- /dev/null +++ b/eth/state_accessor.go @@ -0,0 +1,209 @@ +// (c) 2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package eth + +import ( + "errors" + "fmt" + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" +) + +// Parameters: +// - block: The block for which we want the state (== state at the stateRoot of the parent) +// - reexec: The maximum number of blocks to reprocess trying to obtain the desired state +// - base: If the caller is tracing multiple blocks, the caller can provide the parent state +// continuously from the callsite. +// - checklive: if true, then the live 'blockchain' state database is used. If the caller want to +// perform Commit or other 'save-to-disk' changes, this should be set to false to avoid +// storing trash persistently +// - preferDisk: this arg can be used by the caller to signal that even though the 'base' is provided, +// it would be preferrable to start from a fresh state, if we have it on disk. +func (eth *Ethereum) stateAtBlock(block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (statedb *state.StateDB, err error) { + var ( + current *types.Block + database state.Database + report = true + origin = block.NumberU64() + ) + // Check the live database first if we have the state fully available, use that. + if checkLive { + statedb, err = eth.blockchain.StateAt(block.Root()) + if err == nil { + return statedb, nil + } + } + if base != nil { + if preferDisk { + // Create an ephemeral trie.Database for isolating the live one. Otherwise + // the internal junks created by tracing will be persisted into the disk. + database = state.NewDatabaseWithConfig(eth.chainDb, &trie.Config{Cache: 16}) + if statedb, err = state.New(block.Root(), database, nil); err == nil { + log.Info("Found disk backend for state trie", "root", block.Root(), "number", block.Number()) + return statedb, nil + } + } + // The optional base statedb is given, mark the start point as parent block + statedb, database, report = base, base.Database(), false + current = eth.blockchain.GetBlock(block.ParentHash(), block.NumberU64()-1) + } else { + // Otherwise try to reexec blocks until we find a state or reach our limit + current = block + + // Create an ephemeral trie.Database for isolating the live one. Otherwise + // the internal junks created by tracing will be persisted into the disk. + database = state.NewDatabaseWithConfig(eth.chainDb, &trie.Config{Cache: 16}) + + // If we didn't check the dirty database, do check the clean one, otherwise + // we would rewind past a persisted block (specific corner case is chain + // tracing from the genesis). + if !checkLive { + statedb, err = state.New(current.Root(), database, nil) + if err == nil { + return statedb, nil + } + } + // Database does not have the state for the given block, try to regenerate + for i := uint64(0); i < reexec; i++ { + if current.NumberU64() == 0 { + return nil, errors.New("genesis state is missing") + } + parent := eth.blockchain.GetBlock(current.ParentHash(), current.NumberU64()-1) + if parent == nil { + return nil, fmt.Errorf("missing block %v %d", current.ParentHash(), current.NumberU64()-1) + } + current = parent + + statedb, err = state.New(current.Root(), database, nil) + if err == nil { + break + } + } + if err != nil { + switch err.(type) { + case *trie.MissingNodeError: + return nil, fmt.Errorf("required historical state unavailable (reexec=%d)", reexec) + default: + return nil, err + } + } + } + // State was available at historical point, regenerate + var ( + start = time.Now() + logged time.Time + parent common.Hash + ) + for current.NumberU64() < origin { + // Print progress logs if long enough time elapsed + if time.Since(logged) > 8*time.Second && report { + log.Info("Regenerating historical state", "block", current.NumberU64()+1, "target", origin, "remaining", origin-current.NumberU64()-1, "elapsed", time.Since(start)) + logged = time.Now() + } + // Retrieve the next block to regenerate and process it + parentHeader := current.Header() + next := current.NumberU64() + 1 + if current = eth.blockchain.GetBlockByNumber(next); current == nil { + return nil, fmt.Errorf("block #%d not found", next) + } + _, _, _, err := eth.blockchain.Processor().Process(current, parentHeader, statedb, vm.Config{}) + if err != nil { + return nil, fmt.Errorf("processing block %d failed: %v", current.NumberU64(), err) + } + // Finalize the state so any modifications are written to the trie + root, err := statedb.Commit(eth.blockchain.Config().IsEIP158(current.Number())) + if err != nil { + return nil, fmt.Errorf("stateAtBlock commit failed, number %d root %v: %w", + current.NumberU64(), current.Root().Hex(), err) + } + statedb, err = state.New(root, database, nil) + if err != nil { + return nil, fmt.Errorf("state reset after block %d failed: %v", current.NumberU64(), err) + } + database.TrieDB().Reference(root, common.Hash{}) + if parent != (common.Hash{}) { + database.TrieDB().Dereference(parent) + } + parent = root + } + if report { + nodes, imgs := database.TrieDB().Size() + log.Info("Historical state regenerated", "block", current.NumberU64(), "elapsed", time.Since(start), "nodes", nodes, "preimages", imgs) + } + return statedb, nil +} + +// stateAtTransaction returns the execution environment of a certain transaction. +func (eth *Ethereum) stateAtTransaction(block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) { + // Short circuit if it's genesis block. + if block.NumberU64() == 0 { + return nil, vm.BlockContext{}, nil, errors.New("no transaction in genesis") + } + // Create the parent state database + parent := eth.blockchain.GetBlock(block.ParentHash(), block.NumberU64()-1) + if parent == nil { + return nil, vm.BlockContext{}, nil, fmt.Errorf("parent %#x not found", block.ParentHash()) + } + // Lookup the statedb of parent block from the live database, + // otherwise regenerate it on the flight. + statedb, err := eth.stateAtBlock(parent, reexec, nil, true, false) + if err != nil { + return nil, vm.BlockContext{}, nil, err + } + if txIndex == 0 && len(block.Transactions()) == 0 { + return nil, vm.BlockContext{}, statedb, nil + } + // Recompute transactions up to the target index. + signer := types.MakeSigner(eth.blockchain.Config(), block.Number(), new(big.Int).SetUint64(block.Time())) + for idx, tx := range block.Transactions() { + // Assemble the transaction call message and return if the requested offset + msg, _ := tx.AsMessage(signer, block.BaseFee()) + txContext := core.NewEVMTxContext(msg) + context := core.NewEVMBlockContext(block.Header(), eth.blockchain, nil) + if idx == txIndex { + return msg, context, statedb, nil + } + // Not yet the searched for transaction, execute on top of the current state + vmenv := vm.NewEVM(context, txContext, statedb, eth.blockchain.Config(), vm.Config{}) + statedb.Prepare(tx.Hash(), idx) + if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas())); err != nil { + return nil, vm.BlockContext{}, nil, fmt.Errorf("transaction %#x failed: %v", tx.Hash(), err) + } + // Ensure any modifications are committed to the state + // Only delete empty objects if EIP158/161 (a.k.a Spurious Dragon) is in effect + statedb.Finalise(vmenv.ChainConfig().IsEIP158(block.Number())) + } + return nil, vm.BlockContext{}, nil, fmt.Errorf("transaction index %d out of range for block %#x", txIndex, block.Hash()) +} diff --git a/eth/tracers/api.go b/eth/tracers/api.go new file mode 100644 index 0000000000..1bc6bbd5ba --- /dev/null +++ b/eth/tracers/api.go @@ -0,0 +1,792 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tracers + +import ( + "bytes" + "context" + "errors" + "fmt" + "math/big" + "runtime" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/internal/ethapi" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +const ( + // defaultTraceTimeout is the amount of time a single transaction can execute + // by default before being forcefully aborted. + defaultTraceTimeout = 5 * time.Second + + // defaultTraceReexec is the number of blocks the tracer is willing to go back + // and reexecute to produce missing historical state necessary to run a specific + // trace. + defaultTraceReexec = uint64(128) + + // defaultTracechainMemLimit is the size of the triedb, at which traceChain + // switches over and tries to use a disk-backed database instead of building + // on top of memory. + // For non-archive nodes, this limit _will_ be overblown, as disk-backed tries + // will only be found every ~15K blocks or so. + defaultTracechainMemLimit = common.StorageSize(500 * 1024 * 1024) +) + +// Backend interface provides the common API services (that are provided by +// both full and light clients) with access to necessary functions. +type Backend interface { + HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) + HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) + BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) + BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) + BadBlocks() []*types.Block + GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) + RPCGasCap() uint64 + ChainConfig() *params.ChainConfig + Engine() consensus.Engine + ChainDb() ethdb.Database + StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (*state.StateDB, error) + StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) +} + +// API is the collection of tracing APIs exposed over the private debugging endpoint. +type API struct { + backend Backend +} + +// NewAPI creates a new API definition for the tracing methods of the Ethereum service. +func NewAPI(backend Backend) *API { + return &API{backend: backend} +} + +type chainContext struct { + api *API + ctx context.Context +} + +func (context *chainContext) Engine() consensus.Engine { + return context.api.backend.Engine() +} + +func (context *chainContext) GetHeader(hash common.Hash, number uint64) *types.Header { + header, err := context.api.backend.HeaderByNumber(context.ctx, rpc.BlockNumber(number)) + if err != nil { + return nil + } + if header.Hash() == hash { + return header + } + header, err = context.api.backend.HeaderByHash(context.ctx, hash) + if err != nil { + return nil + } + return header +} + +// chainContext construts the context reader which is used by the evm for reading +// the necessary chain context. +func (api *API) chainContext(ctx context.Context) core.ChainContext { + return &chainContext{api: api, ctx: ctx} +} + +// blockByNumber is the wrapper of the chain access function offered by the backend. +// It will return an error if the block is not found. +func (api *API) blockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) { + block, err := api.backend.BlockByNumber(ctx, number) + if err != nil { + return nil, err + } + if block == nil { + return nil, fmt.Errorf("block #%d not found", number) + } + return block, nil +} + +// blockByHash is the wrapper of the chain access function offered by the backend. +// It will return an error if the block is not found. +func (api *API) blockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) { + block, err := api.backend.BlockByHash(ctx, hash) + if err != nil { + return nil, err + } + if block == nil { + return nil, fmt.Errorf("block %s not found", hash.Hex()) + } + return block, nil +} + +// blockByNumberAndHash is the wrapper of the chain access function offered by +// the backend. It will return an error if the block is not found. +// +// Note this function is friendly for the light client which can only retrieve the +// historical(before the CHT) header/block by number. +func (api *API) blockByNumberAndHash(ctx context.Context, number rpc.BlockNumber, hash common.Hash) (*types.Block, error) { + block, err := api.blockByNumber(ctx, number) + if err != nil { + return nil, err + } + if block.Hash() == hash { + return block, nil + } + return api.blockByHash(ctx, hash) +} + +// TraceConfig holds extra parameters to trace functions. +type TraceConfig struct { + *vm.LogConfig + Tracer *string + Timeout *string + Reexec *uint64 +} + +// TraceCallConfig is the config for traceCall API. It holds one more +// field to override the state for tracing. +type TraceCallConfig struct { + *vm.LogConfig + Tracer *string + Timeout *string + Reexec *uint64 + StateOverrides *ethapi.StateOverride +} + +// StdTraceConfig holds extra parameters to standard-json trace functions. +type StdTraceConfig struct { + vm.LogConfig + Reexec *uint64 + TxHash common.Hash +} + +// txTraceResult is the result of a single transaction trace. +type txTraceResult struct { + Result interface{} `json:"result,omitempty"` // Trace results produced by the tracer + Error string `json:"error,omitempty"` // Trace failure produced by the tracer +} + +// blockTraceTask represents a single block trace task when an entire chain is +// being traced. +type blockTraceTask struct { + statedb *state.StateDB // Intermediate state prepped for tracing + block *types.Block // Block to trace the transactions from + rootref common.Hash // Trie root reference held for this task + results []*txTraceResult // Trace results procudes by the task +} + +// blockTraceResult represets the results of tracing a single block when an entire +// chain is being traced. +type blockTraceResult struct { + Block hexutil.Uint64 `json:"block"` // Block number corresponding to this trace + Hash common.Hash `json:"hash"` // Block hash corresponding to this trace + Traces []*txTraceResult `json:"traces"` // Trace results produced by the task +} + +// txTraceTask represents a single transaction trace task when an entire block +// is being traced. +type txTraceTask struct { + statedb *state.StateDB // Intermediate state prepped for tracing + index int // Transaction offset in the block +} + +// TraceChain returns the structured logs created during the execution of EVM +// between two blocks (excluding start) and returns them as a JSON object. +func (api *API) TraceChain(ctx context.Context, start, end rpc.BlockNumber, config *TraceConfig) (*rpc.Subscription, error) { // Fetch the block interval that we want to trace + from, err := api.blockByNumber(ctx, start) + if err != nil { + return nil, err + } + to, err := api.blockByNumber(ctx, end) + if err != nil { + return nil, err + } + if from.Number().Cmp(to.Number()) >= 0 { + return nil, fmt.Errorf("end block (#%d) needs to come after start block (#%d)", end, start) + } + return api.traceChain(ctx, from, to, config) +} + +// traceChain configures a new tracer according to the provided configuration, and +// executes all the transactions contained within. The return value will be one item +// per transaction, dependent on the requested tracer. +func (api *API) traceChain(ctx context.Context, start, end *types.Block, config *TraceConfig) (*rpc.Subscription, error) { + // Tracing a chain is a **long** operation, only do with subscriptions + notifier, supported := rpc.NotifierFromContext(ctx) + if !supported { + return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported + } + sub := notifier.CreateSubscription() + + // Prepare all the states for tracing. Note this procedure can take very + // long time. Timeout mechanism is necessary. + reexec := defaultTraceReexec + if config != nil && config.Reexec != nil { + reexec = *config.Reexec + } + blocks := int(end.NumberU64() - start.NumberU64()) + threads := runtime.NumCPU() + if threads > blocks { + threads = blocks + } + var ( + pend = new(sync.WaitGroup) + tasks = make(chan *blockTraceTask, threads) + results = make(chan *blockTraceTask, threads) + localctx = context.Background() + ) + for th := 0; th < threads; th++ { + pend.Add(1) + go func() { + defer pend.Done() + + // Fetch and execute the next block trace tasks + for task := range tasks { + signer := types.MakeSigner(api.backend.ChainConfig(), task.block.Number(), new(big.Int).SetUint64(task.block.Time())) + blockCtx := core.NewEVMBlockContext(task.block.Header(), api.chainContext(localctx), nil) + // Trace all the transactions contained within + for i, tx := range task.block.Transactions() { + msg, _ := tx.AsMessage(signer, task.block.BaseFee()) + txctx := &Context{ + BlockHash: task.block.Hash(), + TxIndex: i, + TxHash: tx.Hash(), + } + res, err := api.traceTx(localctx, msg, txctx, blockCtx, task.statedb, config) + if err != nil { + task.results[i] = &txTraceResult{Error: err.Error()} + log.Warn("Tracing failed", "hash", tx.Hash(), "block", task.block.NumberU64(), "err", err) + break + } + // Only delete empty objects if EIP158/161 (a.k.a Spurious Dragon) is in effect + task.statedb.Finalise(api.backend.ChainConfig().IsEIP158(task.block.Number())) + task.results[i] = &txTraceResult{Result: res} + } + // Stream the result back to the user or abort on teardown + select { + case results <- task: + case <-notifier.Closed(): + return + } + } + }() + } + // Start a goroutine to feed all the blocks into the tracers + var ( + begin = time.Now() + derefTodo []common.Hash // list of hashes to dereference from the db + derefsMu sync.Mutex // mutex for the derefs + ) + + go func() { + var ( + logged time.Time + number uint64 + traced uint64 + failed error + parent common.Hash + statedb *state.StateDB + ) + // Ensure everything is properly cleaned up on any exit path + defer func() { + close(tasks) + pend.Wait() + + switch { + case failed != nil: + log.Warn("Chain tracing failed", "start", start.NumberU64(), "end", end.NumberU64(), "transactions", traced, "elapsed", time.Since(begin), "err", failed) + case number < end.NumberU64(): + log.Warn("Chain tracing aborted", "start", start.NumberU64(), "end", end.NumberU64(), "abort", number, "transactions", traced, "elapsed", time.Since(begin)) + default: + log.Info("Chain tracing finished", "start", start.NumberU64(), "end", end.NumberU64(), "transactions", traced, "elapsed", time.Since(begin)) + } + close(results) + }() + var preferDisk bool + // Feed all the blocks both into the tracer, as well as fast process concurrently + for number = start.NumberU64(); number < end.NumberU64(); number++ { + // Stop tracing if interruption was requested + select { + case <-notifier.Closed(): + return + default: + } + // clean out any derefs + derefsMu.Lock() + for _, h := range derefTodo { + statedb.Database().TrieDB().Dereference(h) + } + derefTodo = derefTodo[:0] + derefsMu.Unlock() + + // Print progress logs if long enough time elapsed + if time.Since(logged) > 8*time.Second { + logged = time.Now() + log.Info("Tracing chain segment", "start", start.NumberU64(), "end", end.NumberU64(), "current", number, "transactions", traced, "elapsed", time.Since(begin)) + } + // Retrieve the parent state to trace on top + block, err := api.blockByNumber(localctx, rpc.BlockNumber(number)) + if err != nil { + failed = err + break + } + // Prepare the statedb for tracing. Don't use the live database for + // tracing to avoid persisting state junks into the database. + statedb, err = api.backend.StateAtBlock(localctx, block, reexec, statedb, false, preferDisk) + if err != nil { + failed = err + break + } + if trieDb := statedb.Database().TrieDB(); trieDb != nil { + // Hold the reference for tracer, will be released at the final stage + trieDb.Reference(block.Root(), common.Hash{}) + + // Release the parent state because it's already held by the tracer + if parent != (common.Hash{}) { + trieDb.Dereference(parent) + } + // Prefer disk if the trie db memory grows too much + s1, s2 := trieDb.Size() + if !preferDisk && (s1+s2) > defaultTracechainMemLimit { + log.Info("Switching to prefer-disk mode for tracing", "size", s1+s2) + preferDisk = true + } + } + parent = block.Root() + + next, err := api.blockByNumber(localctx, rpc.BlockNumber(number+1)) + if err != nil { + failed = err + break + } + // Send the block over to the concurrent tracers (if not in the fast-forward phase) + txs := next.Transactions() + select { + case tasks <- &blockTraceTask{statedb: statedb.Copy(), block: next, rootref: block.Root(), results: make([]*txTraceResult, len(txs))}: + case <-notifier.Closed(): + return + } + traced += uint64(len(txs)) + } + }() + + // Keep reading the trace results and stream the to the user + go func() { + var ( + done = make(map[uint64]*blockTraceResult) + next = start.NumberU64() + 1 + ) + for res := range results { + // Queue up next received result + result := &blockTraceResult{ + Block: hexutil.Uint64(res.block.NumberU64()), + Hash: res.block.Hash(), + Traces: res.results, + } + // Schedule any parent tries held in memory by this task for dereferencing + done[uint64(result.Block)] = result + derefsMu.Lock() + derefTodo = append(derefTodo, res.rootref) + derefsMu.Unlock() + // Stream completed traces to the user, aborting on the first error + for result, ok := done[next]; ok; result, ok = done[next] { + if len(result.Traces) > 0 || next == end.NumberU64() { + notifier.Notify(sub.ID, result) + } + delete(done, next) + next++ + } + } + }() + return sub, nil +} + +// TraceBlockByNumber returns the structured logs created during the execution of +// EVM and returns them as a JSON object. +func (api *API) TraceBlockByNumber(ctx context.Context, number rpc.BlockNumber, config *TraceConfig) ([]*txTraceResult, error) { + block, err := api.blockByNumber(ctx, number) + if err != nil { + return nil, err + } + return api.traceBlock(ctx, block, config) +} + +// TraceBlockByHash returns the structured logs created during the execution of +// EVM and returns them as a JSON object. +func (api *API) TraceBlockByHash(ctx context.Context, hash common.Hash, config *TraceConfig) ([]*txTraceResult, error) { + block, err := api.blockByHash(ctx, hash) + if err != nil { + return nil, err + } + return api.traceBlock(ctx, block, config) +} + +// TraceBlock returns the structured logs created during the execution of EVM +// and returns them as a JSON object. +func (api *API) TraceBlock(ctx context.Context, blob []byte, config *TraceConfig) ([]*txTraceResult, error) { + block := new(types.Block) + if err := rlp.Decode(bytes.NewReader(blob), block); err != nil { + return nil, fmt.Errorf("could not decode block: %v", err) + } + return api.traceBlock(ctx, block, config) +} + +// TraceBadBlock returns the structured logs created during the execution of +// EVM against a block pulled from the pool of bad ones and returns them as a JSON +// object. +func (api *API) TraceBadBlock(ctx context.Context, hash common.Hash, config *TraceConfig) ([]*txTraceResult, error) { + // Search for the bad block corresponding to [hash]. + var ( + badBlocks = api.backend.BadBlocks() + block *types.Block + ) + for _, badBlock := range badBlocks { + if hash == block.Hash() { + block = badBlock + break + } + } + if block == nil { + return nil, fmt.Errorf("bad block %#x not found", hash) + } + return api.traceBlock(ctx, block, config) +} + +// IntermediateRoots executes a block (bad- or canon- or side-), and returns a list +// of intermediate roots: the stateroot after each transaction. +func (api *API) IntermediateRoots(ctx context.Context, hash common.Hash, config *TraceConfig) ([]common.Hash, error) { + block, _ := api.blockByHash(ctx, hash) + if block == nil { + return nil, fmt.Errorf("block %#x not found", hash) + } + if block.NumberU64() == 0 { + return nil, errors.New("genesis is not traceable") + } + parent, err := api.blockByNumberAndHash(ctx, rpc.BlockNumber(block.NumberU64()-1), block.ParentHash()) + if err != nil { + return nil, err + } + reexec := defaultTraceReexec + if config != nil && config.Reexec != nil { + reexec = *config.Reexec + } + statedb, err := api.backend.StateAtBlock(ctx, parent, reexec, nil, true, false) + if err != nil { + return nil, err + } + var ( + roots []common.Hash + signer = types.MakeSigner(api.backend.ChainConfig(), block.Number(), new(big.Int).SetUint64(block.Time())) + chainConfig = api.backend.ChainConfig() + vmctx = core.NewEVMBlockContext(block.Header(), api.chainContext(ctx), nil) + deleteEmptyObjects = chainConfig.IsEIP158(block.Number()) + ) + for i, tx := range block.Transactions() { + var ( + msg, _ = tx.AsMessage(signer, block.BaseFee()) + txContext = core.NewEVMTxContext(msg) + vmenv = vm.NewEVM(vmctx, txContext, statedb, chainConfig, vm.Config{}) + ) + statedb.Prepare(tx.Hash(), i) + if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(msg.Gas())); err != nil { + log.Warn("Tracing intermediate roots did not complete", "txindex", i, "txhash", tx.Hash(), "err", err) + // We intentionally don't return the error here: if we do, then the RPC server will not + // return the roots. Most likely, the caller already knows that a certain transaction fails to + // be included, but still want the intermediate roots that led to that point. + // It may happen the tx_N causes an erroneous state, which in turn causes tx_N+M to not be + // executable. + // N.B: This should never happen while tracing canon blocks, only when tracing bad blocks. + return roots, nil + } + // calling IntermediateRoot will internally call Finalize on the state + // so any modifications are written to the trie + roots = append(roots, statedb.IntermediateRoot(deleteEmptyObjects)) + } + return roots, nil +} + +// traceBlock configures a new tracer according to the provided configuration, and +// executes all the transactions contained within. The return value will be one item +// per transaction, dependent on the requestd tracer. +func (api *API) traceBlock(ctx context.Context, block *types.Block, config *TraceConfig) ([]*txTraceResult, error) { + if block.NumberU64() == 0 { + return nil, errors.New("genesis is not traceable") + } + parent, err := api.blockByNumberAndHash(ctx, rpc.BlockNumber(block.NumberU64()-1), block.ParentHash()) + if err != nil { + return nil, err + } + reexec := defaultTraceReexec + if config != nil && config.Reexec != nil { + reexec = *config.Reexec + } + statedb, err := api.backend.StateAtBlock(ctx, parent, reexec, nil, true, false) + if err != nil { + return nil, err + } + // Execute all the transaction contained within the block concurrently + var ( + signer = types.MakeSigner(api.backend.ChainConfig(), block.Number(), new(big.Int).SetUint64(block.Time())) + txs = block.Transactions() + results = make([]*txTraceResult, len(txs)) + + pend = new(sync.WaitGroup) + jobs = make(chan *txTraceTask, len(txs)) + ) + threads := runtime.NumCPU() + if threads > len(txs) { + threads = len(txs) + } + blockCtx := core.NewEVMBlockContext(block.Header(), api.chainContext(ctx), nil) + blockHash := block.Hash() + for th := 0; th < threads; th++ { + pend.Add(1) + go func() { + defer pend.Done() + // Fetch and execute the next transaction trace tasks + for task := range jobs { + msg, _ := txs[task.index].AsMessage(signer, block.BaseFee()) + txctx := &Context{ + BlockHash: blockHash, + TxIndex: task.index, + TxHash: txs[task.index].Hash(), + } + res, err := api.traceTx(ctx, msg, txctx, blockCtx, task.statedb, config) + if err != nil { + results[task.index] = &txTraceResult{Error: err.Error()} + continue + } + results[task.index] = &txTraceResult{Result: res} + } + }() + } + // Feed the transactions into the tracers and return + var failed error + for i, tx := range txs { + // Send the trace task over for execution + jobs <- &txTraceTask{statedb: statedb.Copy(), index: i} + + // Generate the next state snapshot fast without tracing + msg, _ := tx.AsMessage(signer, block.BaseFee()) + statedb.Prepare(tx.Hash(), i) + vmenv := vm.NewEVM(blockCtx, core.NewEVMTxContext(msg), statedb, api.backend.ChainConfig(), vm.Config{}) + if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(msg.Gas())); err != nil { + failed = err + break + } + // Finalize the state so any modifications are written to the trie + // Only delete empty objects if EIP158/161 (a.k.a Spurious Dragon) is in effect + statedb.Finalise(vmenv.ChainConfig().IsEIP158(block.Number())) + } + close(jobs) + pend.Wait() + + // If execution failed in between, abort + if failed != nil { + return nil, failed + } + return results, nil +} + +// TraceTransaction returns the structured logs created during the execution of EVM +// and returns them as a JSON object. +func (api *API) TraceTransaction(ctx context.Context, hash common.Hash, config *TraceConfig) (interface{}, error) { + _, blockHash, blockNumber, index, err := api.backend.GetTransaction(ctx, hash) + if err != nil { + return nil, err + } + // It shouldn't happen in practice. + if blockNumber == 0 { + return nil, errors.New("genesis is not traceable") + } + reexec := defaultTraceReexec + if config != nil && config.Reexec != nil { + reexec = *config.Reexec + } + block, err := api.blockByNumberAndHash(ctx, rpc.BlockNumber(blockNumber), blockHash) + if err != nil { + return nil, err + } + msg, vmctx, statedb, err := api.backend.StateAtTransaction(ctx, block, int(index), reexec) + if err != nil { + return nil, err + } + txctx := &Context{ + BlockHash: blockHash, + TxIndex: int(index), + TxHash: hash, + } + return api.traceTx(ctx, msg, txctx, vmctx, statedb, config) +} + +// TraceCall lets you trace a given eth_call. It collects the structured logs +// created during the execution of EVM if the given transaction was added on +// top of the provided block and returns them as a JSON object. +// You can provide -2 as a block number to trace on top of the pending block. +func (api *API) TraceCall(ctx context.Context, args ethapi.TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, config *TraceCallConfig) (interface{}, error) { + // Try to retrieve the specified block + var ( + err error + block *types.Block + ) + if hash, ok := blockNrOrHash.Hash(); ok { + block, err = api.blockByHash(ctx, hash) + } else if number, ok := blockNrOrHash.Number(); ok { + block, err = api.blockByNumber(ctx, number) + } else { + return nil, errors.New("invalid arguments; neither block nor hash specified") + } + if err != nil { + return nil, err + } + // try to recompute the state + reexec := defaultTraceReexec + if config != nil && config.Reexec != nil { + reexec = *config.Reexec + } + statedb, err := api.backend.StateAtBlock(ctx, block, reexec, nil, true, false) + if err != nil { + return nil, err + } + // Apply the customized state rules if required. + if config != nil { + if err := config.StateOverrides.Apply(statedb); err != nil { + return nil, err + } + } + // Execute the trace + msg, err := args.ToMessage(api.backend.RPCGasCap(), block.BaseFee()) + if err != nil { + return nil, err + } + vmctx := core.NewEVMBlockContext(block.Header(), api.chainContext(ctx), nil) + + var traceConfig *TraceConfig + if config != nil { + traceConfig = &TraceConfig{ + LogConfig: config.LogConfig, + Tracer: config.Tracer, + Timeout: config.Timeout, + Reexec: config.Reexec, + } + } + return api.traceTx(ctx, msg, new(Context), vmctx, statedb, traceConfig) +} + +// traceTx configures a new tracer according to the provided configuration, and +// executes the given message in the provided environment. The return value will +// be tracer dependent. +func (api *API) traceTx(ctx context.Context, message core.Message, txctx *Context, vmctx vm.BlockContext, statedb *state.StateDB, config *TraceConfig) (interface{}, error) { + // Assemble the structured logger or the JavaScript tracer + var ( + tracer vm.EVMLogger + err error + txContext = core.NewEVMTxContext(message) + ) + switch { + case config == nil: + tracer = vm.NewStructLogger(nil) + case config.Tracer != nil: + // Define a meaningful timeout of a single transaction trace + timeout := defaultTraceTimeout + if config.Timeout != nil { + if timeout, err = time.ParseDuration(*config.Timeout); err != nil { + return nil, err + } + } + if t, err := New(*config.Tracer, txctx); err != nil { + return nil, err + } else { + deadlineCtx, cancel := context.WithTimeout(ctx, timeout) + go func() { + <-deadlineCtx.Done() + if errors.Is(deadlineCtx.Err(), context.DeadlineExceeded) { + t.Stop(errors.New("execution timeout")) + } + }() + defer cancel() + tracer = t + } + + default: + tracer = vm.NewStructLogger(config.LogConfig) + } + // Run the transaction with tracing enabled. + vmenv := vm.NewEVM(vmctx, txContext, statedb, api.backend.ChainConfig(), vm.Config{Debug: true, Tracer: tracer, NoBaseFee: true}) + + // Call Prepare to clear out the statedb access list + statedb.Prepare(txctx.TxHash, txctx.TxIndex) + + result, err := core.ApplyMessage(vmenv, message, new(core.GasPool).AddGas(message.Gas())) + if err != nil { + return nil, fmt.Errorf("tracing failed: %w", err) + } + + // Depending on the tracer type, format and return the output. + switch tracer := tracer.(type) { + case *vm.StructLogger: + // If the result contains a revert reason, return it. + returnVal := fmt.Sprintf("%x", result.Return()) + if len(result.Revert()) > 0 { + returnVal = fmt.Sprintf("%x", result.Revert()) + } + return ðapi.ExecutionResult{ + Gas: result.UsedGas, + Failed: result.Failed(), + ReturnValue: returnVal, + StructLogs: ethapi.FormatLogs(tracer.StructLogs()), + }, nil + + case Tracer: + return tracer.GetResult() + + default: + panic(fmt.Sprintf("bad tracer type %T", tracer)) + } +} + +// APIs return the collection of RPC services the tracer package offers. +func APIs(backend Backend) []rpc.API { + // Append all the local APIs and return + return []rpc.API{ + { + Namespace: "debug", + Version: "1.0", + Service: NewAPI(backend), + Public: false, + }, + } +} diff --git a/eth/tracers/api_test.go b/eth/tracers/api_test.go new file mode 100644 index 0000000000..907a7a8bd5 --- /dev/null +++ b/eth/tracers/api_test.go @@ -0,0 +1,657 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tracers + +import ( + "bytes" + "context" + "crypto/ecdsa" + "encoding/json" + "errors" + "fmt" + "math/big" + "reflect" + "sort" + "testing" + + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/internal/ethapi" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" +) + +var ( + errStateNotFound = errors.New("state not found") + errBlockNotFound = errors.New("block not found") + errTransactionNotFound = errors.New("transaction not found") +) + +type testBackend struct { + chainConfig *params.ChainConfig + engine consensus.Engine + chaindb ethdb.Database + chain *core.BlockChain +} + +func newTestBackend(t *testing.T, n int, gspec *core.Genesis, generator func(i int, b *core.BlockGen)) *testBackend { + backend := &testBackend{ + chainConfig: params.TestChainConfig, + engine: dummy.NewETHFaker(), + chaindb: rawdb.NewMemoryDatabase(), + } + // Generate blocks for testing + gspec.Config = backend.chainConfig + var ( + gendb = rawdb.NewMemoryDatabase() + genesis = gspec.MustCommit(gendb) + ) + blocks, _, err := core.GenerateChain(backend.chainConfig, genesis, backend.engine, gendb, n, 10, generator) + if err != nil { + t.Fatal(err) + } + + // Import the canonical chain + gspec.MustCommit(backend.chaindb) + cacheConfig := &core.CacheConfig{ + TrieCleanLimit: 256, + TrieDirtyLimit: 256, + SnapshotLimit: 128, + Pruning: false, // Archive mode + } + chain, err := core.NewBlockChain(backend.chaindb, cacheConfig, backend.chainConfig, backend.engine, vm.Config{}, common.Hash{}) + if err != nil { + t.Fatalf("failed to create tester chain: %v", err) + } + if n, err := chain.InsertChain(blocks); err != nil { + t.Fatalf("block %d: failed to insert into chain: %v", n, err) + } + for _, block := range blocks { + if err := chain.Accept(block); err != nil { + t.Fatalf("block %d: failed to accept block in chain: %v", n, err) + } + } + backend.chain = chain + return backend +} + +func (b *testBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) { + return b.chain.GetHeaderByHash(hash), nil +} + +func (b *testBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) { + if number == rpc.PendingBlockNumber || number == rpc.LatestBlockNumber { + return b.chain.CurrentHeader(), nil + } + return b.chain.GetHeaderByNumber(uint64(number)), nil +} + +func (b *testBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) { + return b.chain.GetBlockByHash(hash), nil +} + +func (b *testBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) { + if number == rpc.PendingBlockNumber || number == rpc.LatestBlockNumber { + return b.chain.CurrentBlock(), nil + } + return b.chain.GetBlockByNumber(uint64(number)), nil +} + +func (b *testBackend) BadBlocks() []*types.Block { return nil } + +func (b *testBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) { + tx, hash, blockNumber, index := rawdb.ReadTransaction(b.chaindb, txHash) + if tx == nil { + return nil, common.Hash{}, 0, 0, errTransactionNotFound + } + return tx, hash, blockNumber, index, nil +} + +func (b *testBackend) RPCGasCap() uint64 { + return 25000000 +} + +func (b *testBackend) ChainConfig() *params.ChainConfig { + return b.chainConfig +} + +func (b *testBackend) Engine() consensus.Engine { + return b.engine +} + +func (b *testBackend) ChainDb() ethdb.Database { + return b.chaindb +} + +func (b *testBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (*state.StateDB, error) { + statedb, err := b.chain.StateAt(block.Root()) + if err != nil { + return nil, errStateNotFound + } + return statedb, nil +} + +func (b *testBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) { + parent := b.chain.GetBlock(block.ParentHash(), block.NumberU64()-1) + if parent == nil { + return nil, vm.BlockContext{}, nil, errBlockNotFound + } + statedb, err := b.chain.StateAt(parent.Root()) + if err != nil { + return nil, vm.BlockContext{}, nil, errStateNotFound + } + if txIndex == 0 && len(block.Transactions()) == 0 { + return nil, vm.BlockContext{}, statedb, nil + } + // Recompute transactions up to the target index. + signer := types.MakeSigner(b.chainConfig, block.Number(), new(big.Int).SetUint64(block.Time())) + for idx, tx := range block.Transactions() { + msg, _ := tx.AsMessage(signer, block.BaseFee()) + txContext := core.NewEVMTxContext(msg) + context := core.NewEVMBlockContext(block.Header(), b.chain, nil) + if idx == txIndex { + return msg, context, statedb, nil + } + vmenv := vm.NewEVM(context, txContext, statedb, b.chainConfig, vm.Config{}) + if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas())); err != nil { + return nil, vm.BlockContext{}, nil, fmt.Errorf("transaction %#x failed: %v", tx.Hash(), err) + } + statedb.Finalise(vmenv.ChainConfig().IsEIP158(block.Number())) + } + return nil, vm.BlockContext{}, nil, fmt.Errorf("transaction index %d out of range for block %#x", txIndex, block.Hash()) +} + +func TestTraceCall(t *testing.T) { + t.Parallel() + + // Initialize test accounts + accounts := newAccounts(3) + genesis := &core.Genesis{Alloc: core.GenesisAlloc{ + accounts[0].addr: {Balance: big.NewInt(params.Ether)}, + accounts[1].addr: {Balance: big.NewInt(params.Ether)}, + accounts[2].addr: {Balance: big.NewInt(params.Ether)}, + }} + genBlocks := 10 + signer := types.HomesteadSigner{} + api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) { + // Transfer from account[0] to account[1] + // value: 1000 wei + // fee: 0 wei + tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, new(big.Int).Add(b.BaseFee(), big.NewInt(int64(500*params.GWei))), nil), signer, accounts[0].key) + b.AddTx(tx) + })) + + testSuite := []struct { + blockNumber rpc.BlockNumber + call ethapi.TransactionArgs + config *TraceCallConfig + expectErr error + expect interface{} + }{ + // Standard JSON trace upon the genesis, plain transfer. + { + blockNumber: rpc.BlockNumber(0), + call: ethapi.TransactionArgs{ + From: &accounts[0].addr, + To: &accounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: nil, + expectErr: nil, + expect: ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }, + }, + // Standard JSON trace upon the head, plain transfer. + { + blockNumber: rpc.BlockNumber(genBlocks), + call: ethapi.TransactionArgs{ + From: &accounts[0].addr, + To: &accounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: nil, + expectErr: nil, + expect: ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }, + }, + // Standard JSON trace upon the non-existent block, error expects + { + blockNumber: rpc.BlockNumber(genBlocks + 1), + call: ethapi.TransactionArgs{ + From: &accounts[0].addr, + To: &accounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: nil, + expectErr: fmt.Errorf("block #%d not found", genBlocks+1), + expect: nil, + }, + // Standard JSON trace upon the latest block + { + blockNumber: rpc.LatestBlockNumber, + call: ethapi.TransactionArgs{ + From: &accounts[0].addr, + To: &accounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: nil, + expectErr: nil, + expect: ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }, + }, + // Standard JSON trace upon the pending block + { + blockNumber: rpc.PendingBlockNumber, + call: ethapi.TransactionArgs{ + From: &accounts[0].addr, + To: &accounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: nil, + expectErr: nil, + expect: ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }, + }, + } + for _, testspec := range testSuite { + result, err := api.TraceCall(context.Background(), testspec.call, rpc.BlockNumberOrHash{BlockNumber: &testspec.blockNumber}, testspec.config) + if testspec.expectErr != nil { + if err == nil { + t.Errorf("Expect error %v, get nothing", testspec.expectErr) + continue + } + if !reflect.DeepEqual(err, testspec.expectErr) { + t.Errorf("Error mismatch, want %v, get %v", testspec.expectErr, err) + } + } else { + if err != nil { + t.Errorf("Expect no error, get %v", err) + continue + } + if !reflect.DeepEqual(result, testspec.expect) { + t.Errorf("Result mismatch, want %v, get %v", testspec.expect, result) + } + } + } +} + +func TestOverriddenTraceCall(t *testing.T) { + t.Parallel() + + // Initialize test accounts + accounts := newAccounts(3) + genesis := &core.Genesis{Alloc: core.GenesisAlloc{ + accounts[0].addr: {Balance: big.NewInt(params.Ether)}, + accounts[1].addr: {Balance: big.NewInt(params.Ether)}, + accounts[2].addr: {Balance: big.NewInt(params.Ether)}, + }} + genBlocks := 10 + signer := types.HomesteadSigner{} + api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) { + // Transfer from account[0] to account[1] + // value: 1000 wei + // fee: 0 wei + tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, new(big.Int).Add(b.BaseFee(), big.NewInt(int64(500*params.GWei))), nil), signer, accounts[0].key) + b.AddTx(tx) + })) + randomAccounts, tracer := newAccounts(3), "callTracerJs" + + testSuite := []struct { + blockNumber rpc.BlockNumber + call ethapi.TransactionArgs + config *TraceCallConfig + expectErr error + expect *callTrace + }{ + // Succcessful call with state overriding + { + blockNumber: rpc.PendingBlockNumber, + call: ethapi.TransactionArgs{ + From: &randomAccounts[0].addr, + To: &randomAccounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: &TraceCallConfig{ + Tracer: &tracer, + StateOverrides: ðapi.StateOverride{ + randomAccounts[0].addr: ethapi.OverrideAccount{Balance: newRPCBalance(new(big.Int).Mul(big.NewInt(1), big.NewInt(params.Ether)))}, + }, + }, + expectErr: nil, + expect: &callTrace{ + Type: "CALL", + From: randomAccounts[0].addr, + To: randomAccounts[1].addr, + Gas: newRPCUint64(24979000), + GasUsed: newRPCUint64(0), + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + }, + // Invalid call without state overriding + { + blockNumber: rpc.PendingBlockNumber, + call: ethapi.TransactionArgs{ + From: &randomAccounts[0].addr, + To: &randomAccounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: &TraceCallConfig{ + Tracer: &tracer, + }, + expectErr: core.ErrInsufficientFunds, + expect: nil, + }, + // Successful simple contract call + // + // // SPDX-License-Identifier: GPL-3.0 + // + // pragma solidity >=0.7.0 <0.8.0; + // + // /** + // * @title Storage + // * @dev Store & retrieve value in a variable + // */ + // contract Storage { + // uint256 public number; + // constructor() { + // number = block.number; + // } + // } + { + blockNumber: rpc.PendingBlockNumber, + call: ethapi.TransactionArgs{ + From: &randomAccounts[0].addr, + To: &randomAccounts[2].addr, + Data: newRPCBytes(common.Hex2Bytes("8381f58a")), // call number() + }, + config: &TraceCallConfig{ + Tracer: &tracer, + StateOverrides: ðapi.StateOverride{ + randomAccounts[2].addr: ethapi.OverrideAccount{ + Code: newRPCBytes(common.Hex2Bytes("6080604052348015600f57600080fd5b506004361060285760003560e01c80638381f58a14602d575b600080fd5b60336049565b6040518082815260200191505060405180910390f35b6000548156fea2646970667358221220eab35ffa6ab2adfe380772a48b8ba78e82a1b820a18fcb6f59aa4efb20a5f60064736f6c63430007040033")), + StateDiff: newStates([]common.Hash{{}}, []common.Hash{common.BigToHash(big.NewInt(123))}), + }, + }, + }, + expectErr: nil, + expect: &callTrace{ + Type: "CALL", + From: randomAccounts[0].addr, + To: randomAccounts[2].addr, + Input: hexutil.Bytes(common.Hex2Bytes("8381f58a")), + Output: hexutil.Bytes(common.BigToHash(big.NewInt(123)).Bytes()), + Gas: newRPCUint64(24978936), + GasUsed: newRPCUint64(2283), + Value: (*hexutil.Big)(big.NewInt(0)), + }, + }, + } + for i, testspec := range testSuite { + result, err := api.TraceCall(context.Background(), testspec.call, rpc.BlockNumberOrHash{BlockNumber: &testspec.blockNumber}, testspec.config) + if testspec.expectErr != nil { + if err == nil { + t.Errorf("test %d: want error %v, have nothing", i, testspec.expectErr) + continue + } + if !errors.Is(err, testspec.expectErr) { + t.Errorf("test %d: error mismatch, want %v, have %v", i, testspec.expectErr, err) + } + } else { + if err != nil { + t.Errorf("test %d: want no error, have %v", i, err) + continue + } + ret := new(callTrace) + if err := json.Unmarshal(result.(json.RawMessage), ret); err != nil { + t.Fatalf("test %d: failed to unmarshal trace result: %v", i, err) + } + if !jsonEqual(ret, testspec.expect) { + // uncomment this for easier debugging + // have, _ := json.MarshalIndent(ret, "", " ") + // want, _ := json.MarshalIndent(testspec.expect, "", " ") + // t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want)) + t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, testspec.expect) + } + } + } +} + +func TestTraceTransaction(t *testing.T) { + t.Parallel() + + // Initialize test accounts + accounts := newAccounts(2) + genesis := &core.Genesis{Alloc: core.GenesisAlloc{ + accounts[0].addr: {Balance: big.NewInt(params.Ether)}, + accounts[1].addr: {Balance: big.NewInt(params.Ether)}, + }} + target := common.Hash{} + signer := types.HomesteadSigner{} + api := NewAPI(newTestBackend(t, 1, genesis, func(i int, b *core.BlockGen) { + // Transfer from account[0] to account[1] + // value: 1000 wei + // fee: 0 wei + tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, new(big.Int).Add(b.BaseFee(), big.NewInt(int64(500*params.GWei))), nil), signer, accounts[0].key) + b.AddTx(tx) + target = tx.Hash() + })) + result, err := api.TraceTransaction(context.Background(), target, nil) + if err != nil { + t.Errorf("Failed to trace transaction %v", err) + } + if !reflect.DeepEqual(result, ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }) { + t.Error("Transaction tracing result is different") + } +} + +func TestTraceBlock(t *testing.T) { + t.Parallel() + + // Initialize test accounts + accounts := newAccounts(3) + genesis := &core.Genesis{Alloc: core.GenesisAlloc{ + accounts[0].addr: {Balance: big.NewInt(params.Ether)}, + accounts[1].addr: {Balance: big.NewInt(params.Ether)}, + accounts[2].addr: {Balance: big.NewInt(params.Ether)}, + }} + genBlocks := 10 + signer := types.HomesteadSigner{} + api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) { + // Transfer from account[0] to account[1] + // value: 1000 wei + // fee: 0 wei + tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, new(big.Int).Add(b.BaseFee(), big.NewInt(int64(500*params.GWei))), nil), signer, accounts[0].key) + b.AddTx(tx) + })) + + testSuite := []struct { + blockNumber rpc.BlockNumber + config *TraceConfig + expect interface{} + expectErr error + }{ + // Trace genesis block, expect error + { + blockNumber: rpc.BlockNumber(0), + config: nil, + expect: nil, + expectErr: errors.New("genesis is not traceable"), + }, + // Trace head block + { + blockNumber: rpc.BlockNumber(genBlocks), + config: nil, + expectErr: nil, + expect: []*txTraceResult{ + { + Result: ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }, + }, + }, + }, + // Trace non-existent block + { + blockNumber: rpc.BlockNumber(genBlocks + 1), + config: nil, + expectErr: fmt.Errorf("block #%d not found", genBlocks+1), + expect: nil, + }, + // Trace latest block + { + blockNumber: rpc.LatestBlockNumber, + config: nil, + expectErr: nil, + expect: []*txTraceResult{ + { + Result: ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }, + }, + }, + }, + // Trace pending block + { + blockNumber: rpc.PendingBlockNumber, + config: nil, + expectErr: nil, + expect: []*txTraceResult{ + { + Result: ðapi.ExecutionResult{ + Gas: params.TxGas, + Failed: false, + ReturnValue: "", + StructLogs: []ethapi.StructLogRes{}, + }, + }, + }, + }, + } + for _, testspec := range testSuite { + result, err := api.TraceBlockByNumber(context.Background(), testspec.blockNumber, testspec.config) + if testspec.expectErr != nil { + if err == nil { + t.Errorf("Expect error %v, get nothing", testspec.expectErr) + continue + } + if !reflect.DeepEqual(err, testspec.expectErr) { + t.Errorf("Error mismatch, want %v, get %v", testspec.expectErr, err) + } + } else { + if err != nil { + t.Errorf("Expect no error, get %v", err) + continue + } + if !reflect.DeepEqual(result, testspec.expect) { + t.Errorf("Result mismatch, want %v, get %v", testspec.expect, result) + } + } + } +} + +type Account struct { + key *ecdsa.PrivateKey + addr common.Address +} + +type Accounts []Account + +func (a Accounts) Len() int { return len(a) } +func (a Accounts) Swap(i, j int) { a[i], a[j] = a[j], a[i] } +func (a Accounts) Less(i, j int) bool { return bytes.Compare(a[i].addr.Bytes(), a[j].addr.Bytes()) < 0 } + +func newAccounts(n int) (accounts Accounts) { + for i := 0; i < n; i++ { + key, _ := crypto.GenerateKey() + addr := crypto.PubkeyToAddress(key.PublicKey) + accounts = append(accounts, Account{key: key, addr: addr}) + } + sort.Sort(accounts) + return accounts +} + +func newRPCBalance(balance *big.Int) **hexutil.Big { + rpcBalance := (*hexutil.Big)(balance) + return &rpcBalance +} + +func newRPCUint64(number uint64) *hexutil.Uint64 { + rpcUint64 := hexutil.Uint64(number) + return &rpcUint64 +} + +func newRPCBytes(bytes []byte) *hexutil.Bytes { + rpcBytes := hexutil.Bytes(bytes) + return &rpcBytes +} + +func newStates(keys []common.Hash, vals []common.Hash) *map[common.Hash]common.Hash { + if len(keys) != len(vals) { + panic("invalid input") + } + m := make(map[common.Hash]common.Hash) + for i := 0; i < len(keys); i++ { + m[keys[i]] = vals[i] + } + return &m +} diff --git a/eth/tracers/internal/tracers/4byte_tracer.js b/eth/tracers/internal/tracers/4byte_tracer.js new file mode 100644 index 0000000000..9ec3209f8b --- /dev/null +++ b/eth/tracers/internal/tracers/4byte_tracer.js @@ -0,0 +1,65 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// 4byteTracer searches for 4byte-identifiers, and collects them for post-processing. +// It collects the methods identifiers along with the size of the supplied data, so +// a reversed signature can be matched against the size of the data. +// +// Example: +// > debug.traceTransaction( "0x214e597e35da083692f5386141e69f47e973b2c56e7a8073b1ea08fd7571e9de", {tracer: "4byteTracer"}) +// { +// 0x27dc297e-128: 1, +// 0x38cc4831-0: 2, +// 0x524f3889-96: 1, +// 0xadf59f99-288: 1, +// 0xc281d19e-0: 1 +// } +{ + // ids aggregates the 4byte ids found. + ids : {}, + + // store save the given indentifier and datasize. + store: function(id, size){ + var key = "" + toHex(id) + "-" + size; + this.ids[key] = this.ids[key] + 1 || 1; + }, + + enter: function(frame) { + // Skip any pre-compile invocations, those are just fancy opcodes + if (isPrecompiled(frame.getTo())) { + return; + } + var input = frame.getInput() + if (input.length >= 4) { + this.store(slice(input, 0, 4), input.length - 4); + } + }, + + exit: function(frameResult) {}, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + // Save the outer calldata also + if (ctx.input.length >= 4) { + this.store(slice(ctx.input, 0, 4), ctx.input.length-4) + } + return this.ids; + }, +} diff --git a/eth/tracers/internal/tracers/4byte_tracer_legacy.js b/eth/tracers/internal/tracers/4byte_tracer_legacy.js new file mode 100644 index 0000000000..462b4ad4cb --- /dev/null +++ b/eth/tracers/internal/tracers/4byte_tracer_legacy.js @@ -0,0 +1,86 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// 4byteTracer searches for 4byte-identifiers, and collects them for post-processing. +// It collects the methods identifiers along with the size of the supplied data, so +// a reversed signature can be matched against the size of the data. +// +// Example: +// > debug.traceTransaction( "0x214e597e35da083692f5386141e69f47e973b2c56e7a8073b1ea08fd7571e9de", {tracer: "4byteTracer"}) +// { +// 0x27dc297e-128: 1, +// 0x38cc4831-0: 2, +// 0x524f3889-96: 1, +// 0xadf59f99-288: 1, +// 0xc281d19e-0: 1 +// } +{ + // ids aggregates the 4byte ids found. + ids : {}, + + // callType returns 'false' for non-calls, or the peek-index for the first param + // after 'value', i.e. meminstart. + callType: function(opstr){ + switch(opstr){ + case "CALL": case "CALLCODE": + // gas, addr, val, memin, meminsz, memout, memoutsz + return 3; // stack ptr to memin + + case "DELEGATECALL": case "STATICCALL": + // gas, addr, memin, meminsz, memout, memoutsz + return 2; // stack ptr to memin + } + return false; + }, + + // store save the given indentifier and datasize. + store: function(id, size){ + var key = "" + toHex(id) + "-" + size; + this.ids[key] = this.ids[key] + 1 || 1; + }, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + // Skip any opcodes that are not internal calls + var ct = this.callType(log.op.toString()); + if (!ct) { + return; + } + // Skip any pre-compile invocations, those are just fancy opcodes + if (isPrecompiled(toAddress(log.stack.peek(1).toString(16)))) { + return; + } + // Gather internal call details + var inSz = log.stack.peek(ct + 1).valueOf(); + if (inSz >= 4) { + var inOff = log.stack.peek(ct).valueOf(); + this.store(log.memory.slice(inOff, inOff + 4), inSz-4); + } + }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + // Save the outer calldata also + if (ctx.input.length >= 4) { + this.store(slice(ctx.input, 0, 4), ctx.input.length-4) + } + return this.ids; + }, +} diff --git a/eth/tracers/internal/tracers/assets.go b/eth/tracers/internal/tracers/assets.go new file mode 100644 index 0000000000..37e3702400 --- /dev/null +++ b/eth/tracers/internal/tracers/assets.go @@ -0,0 +1,504 @@ +// Code generated by go-bindata. DO NOT EDIT. +// sources: +// 4byte_tracer.js (2.224kB) +// 4byte_tracer_legacy.js (2.933kB) +// bigram_tracer.js (1.712kB) +// call_tracer_js.js (3.497kB) +// call_tracer_legacy.js (8.956kB) +// evmdis_tracer.js (4.195kB) +// noop_tracer.js (1.271kB) +// opcount_tracer.js (1.372kB) +// prestate_tracer.js (4.287kB) +// trigram_tracer.js (1.788kB) +// unigram_tracer.js (1.469kB) + +package tracers + +import ( + "bytes" + "compress/gzip" + "crypto/sha256" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "strings" + "time" +) + +func bindataRead(data []byte, name string) ([]byte, error) { + gz, err := gzip.NewReader(bytes.NewBuffer(data)) + if err != nil { + return nil, fmt.Errorf("read %q: %w", name, err) + } + + var buf bytes.Buffer + _, err = io.Copy(&buf, gz) + clErr := gz.Close() + + if err != nil { + return nil, fmt.Errorf("read %q: %w", name, err) + } + if clErr != nil { + return nil, err + } + + return buf.Bytes(), nil +} + +type asset struct { + bytes []byte + info os.FileInfo + digest [sha256.Size]byte +} + +type bindataFileInfo struct { + name string + size int64 + mode os.FileMode + modTime time.Time +} + +func (fi bindataFileInfo) Name() string { + return fi.name +} +func (fi bindataFileInfo) Size() int64 { + return fi.size +} +func (fi bindataFileInfo) Mode() os.FileMode { + return fi.mode +} +func (fi bindataFileInfo) ModTime() time.Time { + return fi.modTime +} +func (fi bindataFileInfo) IsDir() bool { + return false +} +func (fi bindataFileInfo) Sys() interface{} { + return nil +} + +var __4byte_tracerJs = 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+ +func _4byte_tracerJsBytes() ([]byte, error) { + return bindataRead( + __4byte_tracerJs, + "4byte_tracer.js", + ) +} + +func _4byte_tracerJs() (*asset, error) { + bytes, err := _4byte_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "4byte_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x6b, 0xa8, 0x46, 0xa2, 0x3a, 0x2b, 0xaa, 0xb9, 0xb9, 0xba, 0xe2, 0x22, 0x10, 0xe, 0xe7, 0x4c, 0x24, 0xfc, 0x4c, 0x85, 0xeb, 0x96, 0x48, 0xe8, 0x7f, 0xc8, 0xe0, 0xd0, 0xd, 0x26, 0xa1, 0xb2}} + return a, nil +} + +var __4byte_tracer_legacyJs = 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+ +func _4byte_tracer_legacyJsBytes() ([]byte, error) { + return bindataRead( + __4byte_tracer_legacyJs, + "4byte_tracer_legacy.js", + ) +} + +func _4byte_tracer_legacyJs() (*asset, error) { + bytes, err := _4byte_tracer_legacyJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "4byte_tracer_legacy.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xb4, 0xc5, 0x48, 0x2d, 0xd9, 0x43, 0x95, 0x93, 0x3b, 0x93, 0x2c, 0x47, 0x8c, 0x84, 0x32, 0x3c, 0x8b, 0x2e, 0xf3, 0x72, 0xc4, 0x57, 0xe6, 0x3a, 0xb3, 0xdf, 0x1d, 0xbf, 0x45, 0x3, 0xfc, 0xa}} + return a, nil +} + +var _bigram_tracerJs = 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+ +func bigram_tracerJsBytes() ([]byte, error) { + return bindataRead( + _bigram_tracerJs, + "bigram_tracer.js", + ) +} + +func bigram_tracerJs() (*asset, error) { + bytes, err := bigram_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "bigram_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x77, 0x6c, 0xd, 0x24, 0xf2, 0x49, 0xbd, 0x58, 0x8b, 0xb5, 0xd1, 0xc9, 0xcd, 0xcf, 0x5b, 0x3e, 0x5c, 0xfb, 0x14, 0x50, 0xe7, 0xe3, 0xb9, 0xd1, 0x54, 0x69, 0xe6, 0x5e, 0x45, 0xa6, 0x2c, 0x6c}} + return a, nil +} + +var _call_tracer_jsJs = 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+ +func call_tracer_jsJsBytes() ([]byte, error) { + return bindataRead( + _call_tracer_jsJs, + "call_tracer_js.js", + ) +} + +func call_tracer_jsJs() (*asset, error) { + bytes, err := call_tracer_jsJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "call_tracer_js.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x42, 0x13, 0x7a, 0x14, 0xbf, 0xa7, 0x49, 0x4f, 0xb4, 0x4f, 0x45, 0x1, 0xbc, 0x9e, 0xd1, 0x8e, 0xc7, 0xee, 0x61, 0xfa, 0x82, 0x52, 0xa4, 0x78, 0xfe, 0xff, 0xb1, 0x68, 0x1d, 0xcc, 0x1d, 0x8e}} + return a, nil +} + +var _call_tracer_legacyJs = 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+ +func call_tracer_legacyJsBytes() ([]byte, error) { + return bindataRead( + _call_tracer_legacyJs, + "call_tracer_legacy.js", + ) +} + +func call_tracer_legacyJs() (*asset, error) { + bytes, err := call_tracer_legacyJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "call_tracer_legacy.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x46, 0x79, 0xb6, 0xbc, 0xd2, 0xc, 0x25, 0xb1, 0x22, 0x56, 0xef, 0x77, 0xb9, 0x5e, 0x2e, 0xf4, 0xda, 0xb2, 0x2f, 0x53, 0xa4, 0xff, 0xc8, 0xac, 0xbb, 0x75, 0x22, 0x46, 0x59, 0xe3, 0x1d, 0x7d}} + return a, nil +} + +var _evmdis_tracerJs = 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+ +func evmdis_tracerJsBytes() ([]byte, error) { + return bindataRead( + _evmdis_tracerJs, + "evmdis_tracer.js", + ) +} + +func evmdis_tracerJs() (*asset, error) { + bytes, err := evmdis_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "evmdis_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xb5, 0xc8, 0x73, 0x8e, 0xfb, 0x1f, 0x84, 0x7d, 0x37, 0xd9, 0x26, 0x24, 0x37, 0xb8, 0x65, 0xb1, 0xed, 0xa0, 0x76, 0x9a, 0xf0, 0x8e, 0x3a, 0x9b, 0x20, 0x93, 0x27, 0x26, 0x2e, 0xc9, 0x9b, 0xde}} + return a, nil +} + +var _noop_tracerJs = 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+ +func noop_tracerJsBytes() ([]byte, error) { + return bindataRead( + _noop_tracerJs, + "noop_tracer.js", + ) +} + +func noop_tracerJs() (*asset, error) { + bytes, err := noop_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "noop_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xe3, 0xf, 0x1c, 0x6f, 0x65, 0xaf, 0x90, 0x31, 0xab, 0xf, 0xe0, 0xca, 0x54, 0x7, 0xfd, 0xd3, 0xa1, 0x4a, 0x14, 0x1, 0x2a, 0x9d, 0xdc, 0xb9, 0x64, 0x69, 0x83, 0x30, 0xb1, 0x2a, 0xbd, 0xfb}} + return a, nil +} + +var _opcount_tracerJs = 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+ +func opcount_tracerJsBytes() ([]byte, error) { + return bindataRead( + _opcount_tracerJs, + "opcount_tracer.js", + ) +} + +func opcount_tracerJs() (*asset, error) { + bytes, err := opcount_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "opcount_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x27, 0xe, 0x97, 0x88, 0x9b, 0x53, 0xbb, 0x20, 0x44, 0xd8, 0xf5, 0xeb, 0x41, 0xd2, 0x7e, 0xd6, 0xda, 0x6b, 0xf5, 0xaf, 0x0, 0x75, 0x9f, 0xd9, 0x22, 0xc, 0x6e, 0x74, 0xac, 0x2a, 0xa9, 0xa7}} + return a, nil +} + +var _prestate_tracerJs = 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+ +func prestate_tracerJsBytes() ([]byte, error) { + return bindataRead( + _prestate_tracerJs, + "prestate_tracer.js", + ) +} + +func prestate_tracerJs() (*asset, error) { + bytes, err := prestate_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "prestate_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xd4, 0x9, 0xf9, 0x44, 0x13, 0x31, 0x89, 0xf7, 0x35, 0x9a, 0xc6, 0xf0, 0x86, 0x9d, 0xb2, 0xe3, 0x57, 0xe2, 0xc0, 0xde, 0xc9, 0x3a, 0x4c, 0x4a, 0x94, 0x90, 0xa5, 0x92, 0x2f, 0xbf, 0xc0, 0xb8}} + return a, nil +} + +var _trigram_tracerJs = 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+ +func trigram_tracerJsBytes() ([]byte, error) { + return bindataRead( + _trigram_tracerJs, + "trigram_tracer.js", + ) +} + +func trigram_tracerJs() (*asset, error) { + bytes, err := trigram_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "trigram_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x40, 0x63, 0xe1, 0x42, 0x60, 0x7, 0x1b, 0x79, 0x47, 0x1, 0xa1, 0xbf, 0xc4, 0x66, 0x19, 0x9b, 0x2b, 0x5a, 0x1f, 0x82, 0x3d, 0xcf, 0xee, 0xe7, 0x60, 0x25, 0x2c, 0x4f, 0x13, 0x97, 0xc7, 0x18}} + return a, nil +} + +var _unigram_tracerJs = 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+ +func unigram_tracerJsBytes() ([]byte, error) { + return bindataRead( + _unigram_tracerJs, + "unigram_tracer.js", + ) +} + +func unigram_tracerJs() (*asset, error) { + bytes, err := unigram_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "unigram_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xc, 0xe6, 0x5c, 0x88, 0x18, 0xa7, 0x85, 0x61, 0x18, 0xc6, 0xec, 0x17, 0xfc, 0xdf, 0x9d, 0xc0, 0x1b, 0x49, 0xf8, 0x8d, 0xf1, 0xeb, 0x35, 0xf3, 0xd, 0x3e, 0xf6, 0xa3, 0xac, 0x8c, 0xba, 0x74}} + return a, nil +} + +// Asset loads and returns the asset for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func Asset(name string) ([]byte, error) { + canonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[canonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("Asset %s can't read by error: %v", name, err) + } + return a.bytes, nil + } + return nil, fmt.Errorf("Asset %s not found", name) +} + +// AssetString returns the asset contents as a string (instead of a []byte). +func AssetString(name string) (string, error) { + data, err := Asset(name) + return string(data), err +} + +// MustAsset is like Asset but panics when Asset would return an error. +// It simplifies safe initialization of global variables. +func MustAsset(name string) []byte { + a, err := Asset(name) + if err != nil { + panic("asset: Asset(" + name + "): " + err.Error()) + } + + return a +} + +// MustAssetString is like AssetString but panics when Asset would return an +// error. It simplifies safe initialization of global variables. +func MustAssetString(name string) string { + return string(MustAsset(name)) +} + +// AssetInfo loads and returns the asset info for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func AssetInfo(name string) (os.FileInfo, error) { + canonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[canonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("AssetInfo %s can't read by error: %v", name, err) + } + return a.info, nil + } + return nil, fmt.Errorf("AssetInfo %s not found", name) +} + +// AssetDigest returns the digest of the file with the given name. It returns an +// error if the asset could not be found or the digest could not be loaded. +func AssetDigest(name string) ([sha256.Size]byte, error) { + canonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[canonicalName]; ok { + a, err := f() + if err != nil { + return [sha256.Size]byte{}, fmt.Errorf("AssetDigest %s can't read by error: %v", name, err) + } + return a.digest, nil + } + return [sha256.Size]byte{}, fmt.Errorf("AssetDigest %s not found", name) +} + +// Digests returns a map of all known files and their checksums. +func Digests() (map[string][sha256.Size]byte, error) { + mp := make(map[string][sha256.Size]byte, len(_bindata)) + for name := range _bindata { + a, err := _bindata[name]() + if err != nil { + return nil, err + } + mp[name] = a.digest + } + return mp, nil +} + +// AssetNames returns the names of the assets. +func AssetNames() []string { + names := make([]string, 0, len(_bindata)) + for name := range _bindata { + names = append(names, name) + } + return names +} + +// _bindata is a table, holding each asset generator, mapped to its name. +var _bindata = map[string]func() (*asset, error){ + "4byte_tracer.js": _4byte_tracerJs, + "4byte_tracer_legacy.js": _4byte_tracer_legacyJs, + "bigram_tracer.js": bigram_tracerJs, + "call_tracer_js.js": call_tracer_jsJs, + "call_tracer_legacy.js": call_tracer_legacyJs, + "evmdis_tracer.js": evmdis_tracerJs, + "noop_tracer.js": noop_tracerJs, + "opcount_tracer.js": opcount_tracerJs, + "prestate_tracer.js": prestate_tracerJs, + "trigram_tracer.js": trigram_tracerJs, + "unigram_tracer.js": unigram_tracerJs, +} + +// AssetDebug is true if the assets were built with the debug flag enabled. +const AssetDebug = false + +// AssetDir returns the file names below a certain +// directory embedded in the file by go-bindata. +// For example if you run go-bindata on data/... and data contains the +// following hierarchy: +// data/ +// foo.txt +// img/ +// a.png +// b.png +// then AssetDir("data") would return []string{"foo.txt", "img"}, +// AssetDir("data/img") would return []string{"a.png", "b.png"}, +// AssetDir("foo.txt") and AssetDir("notexist") would return an error, and +// AssetDir("") will return []string{"data"}. +func AssetDir(name string) ([]string, error) { + node := _bintree + if len(name) != 0 { + canonicalName := strings.Replace(name, "\\", "/", -1) + pathList := strings.Split(canonicalName, "/") + for _, p := range pathList { + node = node.Children[p] + if node == nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + } + } + if node.Func != nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + rv := make([]string, 0, len(node.Children)) + for childName := range node.Children { + rv = append(rv, childName) + } + return rv, nil +} + +type bintree struct { + Func func() (*asset, error) + Children map[string]*bintree +} + +var _bintree = &bintree{nil, map[string]*bintree{ + "4byte_tracer.js": {_4byte_tracerJs, map[string]*bintree{}}, + "4byte_tracer_legacy.js": {_4byte_tracer_legacyJs, map[string]*bintree{}}, + "bigram_tracer.js": {bigram_tracerJs, map[string]*bintree{}}, + "call_tracer_js.js": {call_tracer_jsJs, map[string]*bintree{}}, + "call_tracer_legacy.js": {call_tracer_legacyJs, map[string]*bintree{}}, + "evmdis_tracer.js": {evmdis_tracerJs, map[string]*bintree{}}, + "noop_tracer.js": {noop_tracerJs, map[string]*bintree{}}, + "opcount_tracer.js": {opcount_tracerJs, map[string]*bintree{}}, + "prestate_tracer.js": {prestate_tracerJs, map[string]*bintree{}}, + "trigram_tracer.js": {trigram_tracerJs, map[string]*bintree{}}, + "unigram_tracer.js": {unigram_tracerJs, map[string]*bintree{}}, +}} + +// RestoreAsset restores an asset under the given directory. +func RestoreAsset(dir, name string) error { + data, err := Asset(name) + if err != nil { + return err + } + info, err := AssetInfo(name) + if err != nil { + return err + } + err = os.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755)) + if err != nil { + return err + } + err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode()) + if err != nil { + return err + } + return os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime()) +} + +// RestoreAssets restores an asset under the given directory recursively. +func RestoreAssets(dir, name string) error { + children, err := AssetDir(name) + // File + if err != nil { + return RestoreAsset(dir, name) + } + // Dir + for _, child := range children { + err = RestoreAssets(dir, filepath.Join(name, child)) + if err != nil { + return err + } + } + return nil +} + +func _filePath(dir, name string) string { + canonicalName := strings.Replace(name, "\\", "/", -1) + return filepath.Join(append([]string{dir}, strings.Split(canonicalName, "/")...)...) +} diff --git a/eth/tracers/internal/tracers/bigram_tracer.js b/eth/tracers/internal/tracers/bigram_tracer.js new file mode 100644 index 0000000000..421c360af9 --- /dev/null +++ b/eth/tracers/internal/tracers/bigram_tracer.js @@ -0,0 +1,47 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +{ + // hist is the counters of opcode bigrams + hist: {}, + // lastOp is last operation + lastOp: '', + // execution depth of last op + lastDepth: 0, + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var op = log.op.toString(); + var depth = log.getDepth(); + if (depth == this.lastDepth){ + var key = this.lastOp+'-'+op; + if (this.hist[key]){ + this.hist[key]++; + } + else { + this.hist[key] = 1; + } + } + this.lastOp = op; + this.lastDepth = depth; + }, + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + return this.hist; + }, +} diff --git a/eth/tracers/internal/tracers/call_tracer.js b/eth/tracers/internal/tracers/call_tracer.js new file mode 100644 index 0000000000..7da7bf216a --- /dev/null +++ b/eth/tracers/internal/tracers/call_tracer.js @@ -0,0 +1,112 @@ +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + + +// callFrameTracer uses the new call frame tracing methods to report useful information +// about internal messages of a transaction. +{ + callstack: [{}], + fault: function(log, db) {}, + result: function(ctx, db) { + // Prepare outer message info + var result = { + type: ctx.type, + from: toHex(ctx.from), + to: toHex(ctx.to), + value: '0x' + ctx.value.toString(16), + gas: '0x' + bigInt(ctx.gas).toString(16), + gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16), + input: toHex(ctx.input), + output: toHex(ctx.output), + } + if (this.callstack[0].calls !== undefined) { + result.calls = this.callstack[0].calls + } + if (this.callstack[0].error !== undefined) { + result.error = this.callstack[0].error + } else if (ctx.error !== undefined) { + result.error = ctx.error + } + if (result.error !== undefined && (result.error !== "execution reverted" || result.output ==="0x")) { + delete result.output + } + + return this.finalize(result) + }, + enter: function(frame) { + var call = { + type: frame.getType(), + from: toHex(frame.getFrom()), + to: toHex(frame.getTo()), + input: toHex(frame.getInput()), + gas: '0x' + bigInt(frame.getGas()).toString('16'), + } + if (frame.getValue() !== undefined){ + call.value='0x' + bigInt(frame.getValue()).toString(16) + } + this.callstack.push(call) + }, + exit: function(frameResult) { + var len = this.callstack.length + if (len > 1) { + var call = this.callstack.pop() + call.gasUsed = '0x' + bigInt(frameResult.getGasUsed()).toString('16') + var error = frameResult.getError() + if (error === undefined) { + call.output = toHex(frameResult.getOutput()) + } else { + call.error = error + if (call.type === 'CREATE' || call.type === 'CREATE2') { + delete call.to + } + } + len -= 1 + if (this.callstack[len-1].calls === undefined) { + this.callstack[len-1].calls = [] + } + this.callstack[len-1].calls.push(call) + } + }, + // finalize recreates a call object using the final desired field oder for json + // serialization. This is a nicety feature to pass meaningfully ordered results + // to users who don't interpret it, just display it. + finalize: function(call) { + var sorted = { + type: call.type, + from: call.from, + to: call.to, + value: call.value, + gas: call.gas, + gasUsed: call.gasUsed, + input: call.input, + output: call.output, + error: call.error, + time: call.time, + calls: call.calls, + } + for (var key in sorted) { + if (sorted[key] === undefined) { + delete sorted[key] + } + } + if (sorted.calls !== undefined) { + for (var i=0; i. + + +// callFrameTracer uses the new call frame tracing methods to report useful information +// about internal messages of a transaction. +{ + callstack: [{}], + fault: function(log, db) {}, + result: function(ctx, db) { + // Prepare outer message info + var result = { + type: ctx.type, + from: toHex(ctx.from), + to: toHex(ctx.to), + value: '0x' + ctx.value.toString(16), + gas: '0x' + bigInt(ctx.gas).toString(16), + gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16), + input: toHex(ctx.input), + output: toHex(ctx.output), + } + if (this.callstack[0].calls !== undefined) { + result.calls = this.callstack[0].calls + } + if (this.callstack[0].error !== undefined) { + result.error = this.callstack[0].error + } else if (ctx.error !== undefined) { + result.error = ctx.error + } + if (result.error !== undefined && (result.error !== "execution reverted" || result.output ==="0x")) { + delete result.output + } + + return this.finalize(result) + }, + enter: function(frame) { + var call = { + type: frame.getType(), + from: toHex(frame.getFrom()), + to: toHex(frame.getTo()), + input: toHex(frame.getInput()), + gas: '0x' + bigInt(frame.getGas()).toString('16'), + } + if (frame.getValue() !== undefined){ + call.value='0x' + bigInt(frame.getValue()).toString(16) + } + this.callstack.push(call) + }, + exit: function(frameResult) { + var len = this.callstack.length + if (len > 1) { + var call = this.callstack.pop() + call.gasUsed = '0x' + bigInt(frameResult.getGasUsed()).toString('16') + var error = frameResult.getError() + if (error === undefined) { + call.output = toHex(frameResult.getOutput()) + } else { + call.error = error + if (call.type === 'CREATE' || call.type === 'CREATE2') { + delete call.to + } + } + len -= 1 + if (this.callstack[len-1].calls === undefined) { + this.callstack[len-1].calls = [] + } + this.callstack[len-1].calls.push(call) + } + }, + // finalize recreates a call object using the final desired field oder for json + // serialization. This is a nicety feature to pass meaningfully ordered results + // to users who don't interpret it, just display it. + finalize: function(call) { + var sorted = { + type: call.type, + from: call.from, + to: call.to, + value: call.value, + gas: call.gas, + gasUsed: call.gasUsed, + input: call.input, + output: call.output, + error: call.error, + time: call.time, + calls: call.calls, + } + for (var key in sorted) { + if (sorted[key] === undefined) { + delete sorted[key] + } + } + if (sorted.calls !== undefined) { + for (var i=0; i. + +// callTracer is a full blown transaction tracer that extracts and reports all +// the internal calls made by a transaction, along with any useful information. +{ + // callstack is the current recursive call stack of the EVM execution. + callstack: [{}], + + // descended tracks whether we've just descended from an outer transaction into + // an inner call. + descended: false, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + // Capture any errors immediately + var error = log.getError(); + if (error !== undefined) { + this.fault(log, db); + return; + } + // We only care about system opcodes, faster if we pre-check once + var syscall = (log.op.toNumber() & 0xf0) == 0xf0; + if (syscall) { + var op = log.op.toString(); + } + // If a new contract is being created, add to the call stack + if (syscall && (op == 'CREATE' || op == "CREATE2")) { + var inOff = log.stack.peek(1).valueOf(); + var inEnd = inOff + log.stack.peek(2).valueOf(); + + // Assemble the internal call report and store for completion + var call = { + type: op, + from: toHex(log.contract.getAddress()), + input: toHex(log.memory.slice(inOff, inEnd)), + gasIn: log.getGas(), + gasCost: log.getCost(), + value: '0x' + log.stack.peek(0).toString(16) + }; + this.callstack.push(call); + this.descended = true + return; + } + // If a contract is being self destructed, gather that as a subcall too + if (syscall && op == 'SELFDESTRUCT') { + var left = this.callstack.length; + if (this.callstack[left-1].calls === undefined) { + this.callstack[left-1].calls = []; + } + this.callstack[left-1].calls.push({ + type: op, + from: toHex(log.contract.getAddress()), + to: toHex(toAddress(log.stack.peek(0).toString(16))), + gasIn: log.getGas(), + gasCost: log.getCost(), + value: '0x' + db.getBalance(log.contract.getAddress()).toString(16) + }); + return + } + // If a new method invocation is being done, add to the call stack + if (syscall && (op == 'CALL' || op == 'CALLCODE' || op == 'DELEGATECALL' || op == 'STATICCALL')) { + // Skip any pre-compile invocations, those are just fancy opcodes + var to = toAddress(log.stack.peek(1).toString(16)); + if (isPrecompiled(to)) { + return + } + var off = (op == 'DELEGATECALL' || op == 'STATICCALL' ? 0 : 1); + + var inOff = log.stack.peek(2 + off).valueOf(); + var inEnd = inOff + log.stack.peek(3 + off).valueOf(); + + // Assemble the internal call report and store for completion + var call = { + type: op, + from: toHex(log.contract.getAddress()), + to: toHex(to), + input: toHex(log.memory.slice(inOff, inEnd)), + gasIn: log.getGas(), + gasCost: log.getCost(), + outOff: log.stack.peek(4 + off).valueOf(), + outLen: log.stack.peek(5 + off).valueOf() + }; + if (op != 'DELEGATECALL' && op != 'STATICCALL') { + call.value = '0x' + log.stack.peek(2).toString(16); + } + this.callstack.push(call); + this.descended = true + return; + } + // If we've just descended into an inner call, retrieve it's true allowance. We + // need to extract if from within the call as there may be funky gas dynamics + // with regard to requested and actually given gas (2300 stipend, 63/64 rule). + if (this.descended) { + if (log.getDepth() >= this.callstack.length) { + this.callstack[this.callstack.length - 1].gas = log.getGas(); + } else { + // TODO(karalabe): The call was made to a plain account. We currently don't + // have access to the true gas amount inside the call and so any amount will + // mostly be wrong since it depends on a lot of input args. Skip gas for now. + } + this.descended = false; + } + // If an existing call is returning, pop off the call stack + if (syscall && op == 'REVERT') { + this.callstack[this.callstack.length - 1].error = "execution reverted"; + return; + } + if (log.getDepth() == this.callstack.length - 1) { + // Pop off the last call and get the execution results + var call = this.callstack.pop(); + + if (call.type == 'CREATE' || call.type == "CREATE2") { + // If the call was a CREATE, retrieve the contract address and output code + call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost - log.getGas()).toString(16); + delete call.gasIn; delete call.gasCost; + + var ret = log.stack.peek(0); + if (!ret.equals(0)) { + call.to = toHex(toAddress(ret.toString(16))); + call.output = toHex(db.getCode(toAddress(ret.toString(16)))); + } else if (call.error === undefined) { + call.error = "internal failure"; // TODO(karalabe): surface these faults somehow + } + } else { + // If the call was a contract call, retrieve the gas usage and output + if (call.gas !== undefined) { + call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost + call.gas - log.getGas()).toString(16); + } + var ret = log.stack.peek(0); + if (!ret.equals(0)) { + call.output = toHex(log.memory.slice(call.outOff, call.outOff + call.outLen)); + } else if (call.error === undefined) { + call.error = "internal failure"; // TODO(karalabe): surface these faults somehow + } + delete call.gasIn; delete call.gasCost; + delete call.outOff; delete call.outLen; + } + if (call.gas !== undefined) { + call.gas = '0x' + bigInt(call.gas).toString(16); + } + // Inject the call into the previous one + var left = this.callstack.length; + if (this.callstack[left-1].calls === undefined) { + this.callstack[left-1].calls = []; + } + this.callstack[left-1].calls.push(call); + } + }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { + // If the topmost call already reverted, don't handle the additional fault again + if (this.callstack[this.callstack.length - 1].error !== undefined) { + return; + } + // Pop off the just failed call + var call = this.callstack.pop(); + call.error = log.getError(); + + // Consume all available gas and clean any leftovers + if (call.gas !== undefined) { + call.gas = '0x' + bigInt(call.gas).toString(16); + call.gasUsed = call.gas + } + delete call.gasIn; delete call.gasCost; + delete call.outOff; delete call.outLen; + + // Flatten the failed call into its parent + var left = this.callstack.length; + if (left > 0) { + if (this.callstack[left-1].calls === undefined) { + this.callstack[left-1].calls = []; + } + this.callstack[left-1].calls.push(call); + return; + } + // Last call failed too, leave it in the stack + this.callstack.push(call); + }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { + var result = { + type: ctx.type, + from: toHex(ctx.from), + to: toHex(ctx.to), + value: '0x' + ctx.value.toString(16), + gas: '0x' + bigInt(ctx.gas).toString(16), + gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16), + input: toHex(ctx.input), + output: toHex(ctx.output), + time: ctx.time, + }; + if (this.callstack[0].calls !== undefined) { + result.calls = this.callstack[0].calls; + } + if (this.callstack[0].error !== undefined) { + result.error = this.callstack[0].error; + } else if (ctx.error !== undefined) { + result.error = ctx.error; + } + if (result.error !== undefined && (result.error !== "execution reverted" || result.output ==="0x")) { + delete result.output; + } + return this.finalize(result); + }, + + // finalize recreates a call object using the final desired field oder for json + // serialization. This is a nicety feature to pass meaningfully ordered results + // to users who don't interpret it, just display it. + finalize: function(call) { + var sorted = { + type: call.type, + from: call.from, + to: call.to, + value: call.value, + gas: call.gas, + gasUsed: call.gasUsed, + input: call.input, + output: call.output, + error: call.error, + time: call.time, + calls: call.calls, + } + for (var key in sorted) { + if (sorted[key] === undefined) { + delete sorted[key]; + } + } + if (sorted.calls !== undefined) { + for (var i=0; i. + +// evmdisTracer returns sufficient information from a trace to perform evmdis-style +// disassembly. +{ + stack: [{ops: []}], + + npushes: {0: 0, 1: 1, 2: 1, 3: 1, 4: 1, 5: 1, 6: 1, 7: 1, 8: 1, 9: 1, 10: 1, 11: 1, 16: 1, 17: 1, 18: 1, 19: 1, 20: 1, 21: 1, 22: 1, 23: 1, 24: 1, 25: 1, 26: 1, 32: 1, 48: 1, 49: 1, 50: 1, 51: 1, 52: 1, 53: 1, 54: 1, 55: 0, 56: 1, 57: 0, 58: 1, 59: 1, 60: 0, 64: 1, 65: 1, 66: 1, 67: 1, 68: 1, 69: 1, 80: 0, 81: 1, 82: 0, 83: 0, 84: 1, 85: 0, 86: 0, 87: 0, 88: 1, 89: 1, 90: 1, 91: 0, 96: 1, 97: 1, 98: 1, 99: 1, 100: 1, 101: 1, 102: 1, 103: 1, 104: 1, 105: 1, 106: 1, 107: 1, 108: 1, 109: 1, 110: 1, 111: 1, 112: 1, 113: 1, 114: 1, 115: 1, 116: 1, 117: 1, 118: 1, 119: 1, 120: 1, 121: 1, 122: 1, 123: 1, 124: 1, 125: 1, 126: 1, 127: 1, 128: 2, 129: 3, 130: 4, 131: 5, 132: 6, 133: 7, 134: 8, 135: 9, 136: 10, 137: 11, 138: 12, 139: 13, 140: 14, 141: 15, 142: 16, 143: 17, 144: 2, 145: 3, 146: 4, 147: 5, 148: 6, 149: 7, 150: 8, 151: 9, 152: 10, 153: 11, 154: 12, 155: 13, 156: 14, 157: 15, 158: 16, 159: 17, 160: 0, 161: 0, 162: 0, 163: 0, 164: 0, 240: 1, 241: 1, 242: 1, 243: 0, 244: 0, 255: 0}, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function() { return this.stack[0].ops; }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var frame = this.stack[this.stack.length - 1]; + + var error = log.getError(); + if (error) { + frame["error"] = error; + } else if (log.getDepth() == this.stack.length) { + opinfo = { + op: log.op.toNumber(), + depth : log.getDepth(), + result: [], + }; + if (frame.ops.length > 0) { + var prevop = frame.ops[frame.ops.length - 1]; + for(var i = 0; i < this.npushes[prevop.op]; i++) + prevop.result.push(log.stack.peek(i).toString(16)); + } + switch(log.op.toString()) { + case "CALL": case "CALLCODE": + var instart = log.stack.peek(3).valueOf(); + var insize = log.stack.peek(4).valueOf(); + opinfo["gas"] = log.stack.peek(0).valueOf(); + opinfo["to"] = log.stack.peek(1).toString(16); + opinfo["value"] = log.stack.peek(2).toString(); + opinfo["input"] = log.memory.slice(instart, instart + insize); + opinfo["error"] = null; + opinfo["return"] = null; + opinfo["ops"] = []; + this.stack.push(opinfo); + break; + case "DELEGATECALL": case "STATICCALL": + var instart = log.stack.peek(2).valueOf(); + var insize = log.stack.peek(3).valueOf(); + opinfo["op"] = log.op.toString(); + opinfo["gas"] = log.stack.peek(0).valueOf(); + opinfo["to"] = log.stack.peek(1).toString(16); + opinfo["input"] = log.memory.slice(instart, instart + insize); + opinfo["error"] = null; + opinfo["return"] = null; + opinfo["ops"] = []; + this.stack.push(opinfo); + break; + case "RETURN": + var out = log.stack.peek(0).valueOf(); + var outsize = log.stack.peek(1).valueOf(); + frame.return = log.memory.slice(out, out + outsize); + break; + case "STOP": case "SUICIDE": + frame.return = log.memory.slice(0, 0); + break; + case "JUMPDEST": + opinfo["pc"] = log.getPC(); + } + if(log.op.isPush()) { + opinfo["len"] = log.op.toNumber() - 0x5e; + } + frame.ops.push(opinfo); + } else { + this.stack = this.stack.slice(0, log.getDepth()); + } + } +} diff --git a/eth/tracers/internal/tracers/noop_tracer.js b/eth/tracers/internal/tracers/noop_tracer.js new file mode 100644 index 0000000000..fe7ddc85ab --- /dev/null +++ b/eth/tracers/internal/tracers/noop_tracer.js @@ -0,0 +1,29 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// noopTracer is just the barebone boilerplate code required from a JavaScript +// object to be usable as a transaction tracer. +{ + // step is invoked for every opcode that the VM executes. + step: function(log, db) { }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { return {}; } +} diff --git a/eth/tracers/internal/tracers/opcount_tracer.js b/eth/tracers/internal/tracers/opcount_tracer.js new file mode 100644 index 0000000000..f7984c741a --- /dev/null +++ b/eth/tracers/internal/tracers/opcount_tracer.js @@ -0,0 +1,32 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// opcountTracer is a sample tracer that just counts the number of instructions +// executed by the EVM before the transaction terminated. +{ + // count tracks the number of EVM instructions executed. + count: 0, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { this.count++ }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { return this.count } +} diff --git a/eth/tracers/internal/tracers/prestate_tracer.js b/eth/tracers/internal/tracers/prestate_tracer.js new file mode 100644 index 0000000000..084c04ec46 --- /dev/null +++ b/eth/tracers/internal/tracers/prestate_tracer.js @@ -0,0 +1,108 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// prestateTracer outputs sufficient information to create a local execution of +// the transaction from a custom assembled genesis block. +{ + // prestate is the genesis that we're building. + prestate: null, + + // lookupAccount injects the specified account into the prestate object. + lookupAccount: function(addr, db){ + var acc = toHex(addr); + if (this.prestate[acc] === undefined) { + this.prestate[acc] = { + balance: '0x' + db.getBalance(addr).toString(16), + nonce: db.getNonce(addr), + code: toHex(db.getCode(addr)), + storage: {} + }; + } + }, + + // lookupStorage injects the specified storage entry of the given account into + // the prestate object. + lookupStorage: function(addr, key, db){ + var acc = toHex(addr); + var idx = toHex(key); + + if (this.prestate[acc].storage[idx] === undefined) { + this.prestate[acc].storage[idx] = toHex(db.getState(addr, key)); + } + }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { + // At this point, we need to deduct the 'value' from the + // outer transaction, and move it back to the origin + this.lookupAccount(ctx.from, db); + + var fromBal = bigInt(this.prestate[toHex(ctx.from)].balance.slice(2), 16); + var toBal = bigInt(this.prestate[toHex(ctx.to)].balance.slice(2), 16); + + this.prestate[toHex(ctx.to)].balance = '0x'+toBal.subtract(ctx.value).toString(16); + this.prestate[toHex(ctx.from)].balance = '0x'+fromBal.add(ctx.value).add((ctx.gasUsed + ctx.intrinsicGas) * ctx.gasPrice).toString(16); + + // Decrement the caller's nonce, and remove empty create targets + this.prestate[toHex(ctx.from)].nonce--; + if (ctx.type == 'CREATE') { + // We can blibdly delete the contract prestate, as any existing state would + // have caused the transaction to be rejected as invalid in the first place. + delete this.prestate[toHex(ctx.to)]; + } + // Return the assembled allocations (prestate) + return this.prestate; + }, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + // Add the current account if we just started tracing + if (this.prestate === null){ + this.prestate = {}; + // Balance will potentially be wrong here, since this will include the value + // sent along with the message. We fix that in 'result()'. + this.lookupAccount(log.contract.getAddress(), db); + } + // Whenever new state is accessed, add it to the prestate + switch (log.op.toString()) { + case "EXTCODECOPY": case "EXTCODESIZE": case "BALANCE": + this.lookupAccount(toAddress(log.stack.peek(0).toString(16)), db); + break; + case "CREATE": + var from = log.contract.getAddress(); + this.lookupAccount(toContract(from, db.getNonce(from)), db); + break; + case "CREATE2": + var from = log.contract.getAddress(); + // stack: salt, size, offset, endowment + var offset = log.stack.peek(1).valueOf() + var size = log.stack.peek(2).valueOf() + var end = offset + size + this.lookupAccount(toContract2(from, log.stack.peek(3).toString(16), log.memory.slice(offset, end)), db); + break; + case "CALL": case "CALLCODE": case "DELEGATECALL": case "STATICCALL": + this.lookupAccount(toAddress(log.stack.peek(1).toString(16)), db); + break; + case 'SSTORE':case 'SLOAD': + this.lookupStorage(log.contract.getAddress(), toWord(log.stack.peek(0).toString(16)), db); + break; + } + }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {} +} diff --git a/eth/tracers/internal/tracers/tracers.go b/eth/tracers/internal/tracers/tracers.go new file mode 100644 index 0000000000..907ecfb068 --- /dev/null +++ b/eth/tracers/internal/tracers/tracers.go @@ -0,0 +1,31 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:generate go-bindata -nometadata -o assets.go -pkg tracers -ignore tracers.go -ignore assets.go ./... +//go:generate gofmt -s -w assets.go + +// Package tracers contains the actual JavaScript tracer assets. +package tracers diff --git a/eth/tracers/internal/tracers/trigram_tracer.js b/eth/tracers/internal/tracers/trigram_tracer.js new file mode 100644 index 0000000000..8756490dfc --- /dev/null +++ b/eth/tracers/internal/tracers/trigram_tracer.js @@ -0,0 +1,49 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +{ + // hist is the map of trigram counters + hist: {}, + // lastOp is last operation + lastOps: ['',''], + lastDepth: 0, + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var depth = log.getDepth(); + if (depth != this.lastDepth){ + this.lastOps = ['','']; + this.lastDepth = depth; + return; + } + var op = log.op.toString(); + var key = this.lastOps[0]+'-'+this.lastOps[1]+'-'+op; + if (this.hist[key]){ + this.hist[key]++; + } + else { + this.hist[key] = 1; + } + this.lastOps[0] = this.lastOps[1]; + this.lastOps[1] = op; + }, + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + return this.hist; + }, +} diff --git a/eth/tracers/internal/tracers/unigram_tracer.js b/eth/tracers/internal/tracers/unigram_tracer.js new file mode 100644 index 0000000000..51107d8f3d --- /dev/null +++ b/eth/tracers/internal/tracers/unigram_tracer.js @@ -0,0 +1,41 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +{ + // hist is the map of opcodes to counters + hist: {}, + // nops counts number of ops + nops: 0, + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var op = log.op.toString(); + if (this.hist[op]){ + this.hist[op]++; + } + else { + this.hist[op] = 1; + } + this.nops++; + }, + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + return this.hist; + }, +} diff --git a/eth/tracers/native/call.go b/eth/tracers/native/call.go new file mode 100644 index 0000000000..fe404438c7 --- /dev/null +++ b/eth/tracers/native/call.go @@ -0,0 +1,180 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package native + +import ( + "encoding/json" + "errors" + "math/big" + "strconv" + "strings" + "sync/atomic" + "time" + + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/tracers" + "github.com/ethereum/go-ethereum/common" +) + +func init() { + tracers.RegisterNativeTracer("callTracer", NewCallTracer) +} + +type callFrame struct { + Type string `json:"type"` + From string `json:"from"` + To string `json:"to,omitempty"` + Value string `json:"value,omitempty"` + Gas string `json:"gas"` + GasUsed string `json:"gasUsed"` + Input string `json:"input"` + Output string `json:"output,omitempty"` + Error string `json:"error,omitempty"` + Calls []callFrame `json:"calls,omitempty"` +} + +type callTracer struct { + callstack []callFrame + interrupt uint32 // Atomic flag to signal execution interruption + reason error // Textual reason for the interruption +} + +// NewCallTracer returns a native go tracer which tracks +// call frames of a tx, and implements vm.EVMLogger. +func NewCallTracer() tracers.Tracer { + // First callframe contains tx context info + // and is populated on start and end. + t := &callTracer{callstack: make([]callFrame, 1)} + return t +} + +func (t *callTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + t.callstack[0] = callFrame{ + Type: "CALL", + From: addrToHex(from), + To: addrToHex(to), + Input: bytesToHex(input), + Gas: uintToHex(gas), + Value: bigToHex(value), + } + if create { + t.callstack[0].Type = "CREATE" + } +} + +func (t *callTracer) CaptureEnd(output []byte, gasUsed uint64, _ time.Duration, err error) { + t.callstack[0].GasUsed = uintToHex(gasUsed) + if err != nil { + t.callstack[0].Error = err.Error() + if err.Error() == "execution reverted" && len(output) > 0 { + t.callstack[0].Output = bytesToHex(output) + } + } else { + t.callstack[0].Output = bytesToHex(output) + } +} + +func (t *callTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { +} + +func (t *callTracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, _ *vm.ScopeContext, depth int, err error) { +} + +func (t *callTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { + // Skip if tracing was interrupted + if atomic.LoadUint32(&t.interrupt) > 0 { + // TODO: env.Cancel() + return + } + + call := callFrame{ + Type: typ.String(), + From: addrToHex(from), + To: addrToHex(to), + Input: bytesToHex(input), + Gas: uintToHex(gas), + Value: bigToHex(value), + } + t.callstack = append(t.callstack, call) +} + +func (t *callTracer) CaptureExit(output []byte, gasUsed uint64, err error) { + size := len(t.callstack) + if size <= 1 { + return + } + // pop call + call := t.callstack[size-1] + t.callstack = t.callstack[:size-1] + size -= 1 + + call.GasUsed = uintToHex(gasUsed) + if err == nil { + call.Output = bytesToHex(output) + } else { + call.Error = err.Error() + if call.Type == "CREATE" || call.Type == "CREATE2" { + call.To = "" + } + } + t.callstack[size-1].Calls = append(t.callstack[size-1].Calls, call) +} + +func (t *callTracer) GetResult() (json.RawMessage, error) { + if len(t.callstack) != 1 { + return nil, errors.New("incorrect number of top-level calls") + } + res, err := json.Marshal(t.callstack[0]) + if err != nil { + return nil, err + } + return json.RawMessage(res), t.reason +} + +func (t *callTracer) Stop(err error) { + t.reason = err + atomic.StoreUint32(&t.interrupt, 1) +} + +func bytesToHex(s []byte) string { + return "0x" + common.Bytes2Hex(s) +} + +func bigToHex(n *big.Int) string { + if n == nil { + return "" + } + return "0x" + n.Text(16) +} + +func uintToHex(n uint64) string { + return "0x" + strconv.FormatUint(n, 16) +} + +func addrToHex(a common.Address) string { + return strings.ToLower(a.Hex()) +} diff --git a/eth/tracers/native/noop.go b/eth/tracers/native/noop.go new file mode 100644 index 0000000000..eff99291a8 --- /dev/null +++ b/eth/tracers/native/noop.go @@ -0,0 +1,46 @@ +package native + +import ( + "encoding/json" + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/tracers" + "github.com/ethereum/go-ethereum/common" +) + +func init() { + tracers.RegisterNativeTracer("noopTracerNative", NewNoopTracer) +} + +type noopTracer struct{} + +func NewNoopTracer() tracers.Tracer { + return &noopTracer{} +} + +func (t *noopTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { +} + +func (t *noopTracer) CaptureEnd(output []byte, gasUsed uint64, _ time.Duration, err error) { +} + +func (t *noopTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { +} + +func (t *noopTracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, _ *vm.ScopeContext, depth int, err error) { +} + +func (t *noopTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (t *noopTracer) CaptureExit(output []byte, gasUsed uint64, err error) { +} + +func (t *noopTracer) GetResult() (json.RawMessage, error) { + return json.RawMessage(`{}`), nil +} + +func (t *noopTracer) Stop(err error) { +} diff --git a/eth/tracers/testdata/call_tracer/create.json b/eth/tracers/testdata/call_tracer/create.json new file mode 100644 index 0000000000..3b94e349b5 --- /dev/null +++ b/eth/tracers/testdata/call_tracer/create.json @@ -0,0 +1,57 @@ +{ + "context": { + "difficulty": "3755480783", + "gasLimit": "5401723", + "miner": "0xd049bfd667cb46aa3ef5df0da3e57db3be39e511", + "number": "2294702", + "timestamp": "1513676146" + }, + "genesis": { + "alloc": { + "0x13e4acefe6a6700604929946e70e6443e4e73447": { + "balance": "0xcf3e0938579f000", + "code": "0x", + "nonce": "9", + "storage": {} + }, + "0x7dc9c9730689ff0b0fd506c67db815f12d90a448": { + "balance": "0x0", + "code": "0x", + "nonce": "0", + "storage": {} + } + }, + "config": { + "byzantiumBlock": 1700000, + "chainId": 3, + "eip150Block": 0, + "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d", + "eip155Block": 10, + "eip158Block": 10, + "ethash": {}, + "homesteadBlock": 0 + }, + "difficulty": "3757315409", + "extraData": "0x566961425443", + "gasLimit": "5406414", + "hash": "0xae107f592eebdd9ff8d6ba00363676096e6afb0e1007a7d3d0af88173077378d", + "miner": "0xd049bfd667cb46aa3ef5df0da3e57db3be39e511", + "mixHash": "0xc927aa05a38bc3de864e95c33b3ae559d3f39c4ccd51cef6f113f9c50ba0caf1", + "nonce": "0x93363bbd2c95f410", + "number": "2294701", + "stateRoot": "0x6b6737d5bde8058990483e915866bd1578014baeff57bd5e4ed228a2bfad635c", + "timestamp": "1513676127", + "totalDifficulty": "7160808139332585" + }, + "input": 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+ "result": { + "from": "0x13e4acefe6a6700604929946e70e6443e4e73447", + "gas": "0x5e106", + "gasUsed": "0x5e106", + "input": 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+ "to": "0x7dc9c9730689ff0b0fd506c67db815f12d90a448", + "type": "CREATE", + "value": "0x0" + } +} \ No newline at end of file diff --git a/eth/tracers/testdata/call_tracer/deep_calls.json b/eth/tracers/testdata/call_tracer/deep_calls.json new file mode 100644 index 0000000000..e4297afb04 --- /dev/null +++ b/eth/tracers/testdata/call_tracer/deep_calls.json @@ -0,0 +1,414 @@ +{ + "context": { + "difficulty": "117066904", + "gasLimit": "4712384", + "miner": "0x1977c248e1014cc103929dd7f154199c916e39ec", + "number": "25001", + "timestamp": "1479891545" + }, + "genesis": { + "alloc": { + "0x2a98c5f40bfa3dee83431103c535f6fae9a8ad38": { + "balance": "0x0", + "code": 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+ "type": "CREATE", + "value": "0x0" + } + ], + "error": "invalid jump destination", + "from": "0xe4a13bc304682a903e9472f469c33801dd18d9e8", + "gas": "0x435c8", + "gasUsed": "0x435c8", + "input": "0x3b91f506000000000000000000000000a14bdd7e5666d784dcce98ad24d383a6b1cd4182000000000000000000000000e4a13bc304682a903e9472f469c33801dd18d9e8", + "to": "0x1d3ddf7caf024f253487e18bc4a15b1a360c170a", + "type": "CALL", + "value": "0x0" + } +} \ No newline at end of file diff --git a/eth/tracers/testdata/call_tracer/inner_instafail.json b/eth/tracers/testdata/call_tracer/inner_instafail.json new file mode 100644 index 0000000000..0997c1877b --- /dev/null +++ b/eth/tracers/testdata/call_tracer/inner_instafail.json @@ -0,0 +1,62 @@ +{ + "genesis": { + "difficulty": "117067574", + "extraData": "0xd783010502846765746887676f312e372e33856c696e7578", + "gasLimit": "4712380", + "hash": "0xe05db05eeb3f288041ecb10a787df121c0ed69499355716e17c307de313a4486", + "miner": 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"0x2e1a7d4d00000000000000000000000000000000000000000000000014d1120d7b160000", + "output": "0x", + "calls": [] + } +} \ No newline at end of file diff --git a/eth/tracers/testdata/call_tracer/inner_throw_outer_revert.json b/eth/tracers/testdata/call_tracer/inner_throw_outer_revert.json new file mode 100644 index 0000000000..efc2d35e89 --- /dev/null +++ b/eth/tracers/testdata/call_tracer/inner_throw_outer_revert.json @@ -0,0 +1,80 @@ +{ + "context": { + "difficulty": "3956606365", + "gasLimit": "5413248", + "miner": "0x00d8ae40d9a06d0e7a2877b62e32eb959afbe16d", + "number": "2295104", + "timestamp": "1513681256" + }, + "genesis": { + "alloc": { + "0x33056b5dcac09a9b4becad0e1dcf92c19bd0af76": { + "balance": "0x0", + "code": 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+ "nonce": "1", + "storage": { + "0x0000000000000000000000000000000000000000000000000000000000000001": "0x0000000000000000000000002cccf5e0538493c235d1c5ef6580f77d99e91396", + "0x0000000000000000000000000000000000000000000000000000000000000002": "0x00000000000000000000000000000000000000000000000000000000000061a9", + "0x0000000000000000000000000000000000000000000000000000000000000005": "0x00000000000000000000000070c9217d814985faef62b124420f8dfbddd96433" + } + } + }, + "config": { + "byzantiumBlock": 1700000, + "chainId": 3, + "eip150Block": 0, + "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d", + "eip155Block": 10, + "eip158Block": 10, + "ethash": {}, + "homesteadBlock": 0 + }, + "difficulty": "117066792", + "extraData": "0xd783010502846765746887676f312e372e33856c696e7578", + "gasLimit": "4712388", + "hash": "0xe23e8d4562a1045b70cbc99fefb20c101a8f0fc8559a80d65fea8896e2f1d46e", + "miner": "0x71842f946b98800fe6feb49f0ae4e253259031c9", + "mixHash": "0x0aada9d6e93dd4db0d09c0488dc0a048fca2ccdc1f3fc7b83ba2a8d393a3a4ff", + "nonce": "0x70849d5838dee2e9", + "number": "25008", + "stateRoot": "0x1e01d2161794768c5b917069e73d86e8dca80cd7f3168c0597de420ab93a3b7b", + "timestamp": "1479891641", + "totalDifficulty": "1896347038589" + }, + "input": "0xf88b8206668504a817c8008303d09094c212e03b9e060e36facad5fd8f4435412ca22e6b80a451a34eb8000000000000000000000000000000000000000000000027fad02094277c000029a0692a3b4e7b2842f8dd7832e712c21e09f451f416c8976d5b8d02e8c0c2b4bea9a07645e90fc421b63dd755767fd93d3c03b4ec0c4d8fafa059558d08cf11d59750", + "result": { + "error": "invalid jump destination", + "from": "0x70c9217d814985faef62b124420f8dfbddd96433", + "gas": "0x37b38", + "gasUsed": "0x37b38", + "input": "0x51a34eb8000000000000000000000000000000000000000000000027fad02094277c0000", + "to": "0xc212e03b9e060e36facad5fd8f4435412ca22e6b", + "type": "CALL", + "value": "0x0" + } +} \ No newline at end of file diff --git a/eth/tracers/testing/calltrace_test.go b/eth/tracers/testing/calltrace_test.go new file mode 100644 index 0000000000..31fbe70f86 --- /dev/null +++ b/eth/tracers/testing/calltrace_test.go @@ -0,0 +1,247 @@ +package testing + +import ( + "encoding/json" + "io/ioutil" + "math/big" + "path/filepath" + "reflect" + "strings" + "testing" + "unicode" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/tracers" + "github.com/ava-labs/subnet-evm/tests" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/rlp" + + // Force-load the native, to trigger registration + _ "github.com/ava-labs/subnet-evm/eth/tracers/native" +) + +type callContext struct { + Number math.HexOrDecimal64 `json:"number"` + Difficulty *math.HexOrDecimal256 `json:"difficulty"` + Time math.HexOrDecimal64 `json:"timestamp"` + GasLimit math.HexOrDecimal64 `json:"gasLimit"` + Miner common.Address `json:"miner"` +} + +// callTrace is the result of a callTracer run. +type callTrace struct { + Type string `json:"type"` + From common.Address `json:"from"` + To common.Address `json:"to"` + Input hexutil.Bytes `json:"input"` + Output hexutil.Bytes `json:"output"` + Gas *hexutil.Uint64 `json:"gas,omitempty"` + GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"` + Value *hexutil.Big `json:"value,omitempty"` + Error string `json:"error,omitempty"` + Calls []callTrace `json:"calls,omitempty"` +} + +// callTracerTest defines a single test to check the call tracer against. +type callTracerTest struct { + Genesis *core.Genesis `json:"genesis"` + Context *callContext `json:"context"` + Input string `json:"input"` + Result *callTrace `json:"result"` +} + +// Iterates over all the input-output datasets in the tracer test harness and +// runs the JavaScript tracers against them. +func TestCallTracerLegacy(t *testing.T) { + testCallTracer("callTracerLegacy", "call_tracer_legacy", t) +} + +func TestCallTracerJs(t *testing.T) { + testCallTracer("callTracerJs", "call_tracer", t) +} + +func TestCallTracerNative(t *testing.T) { + testCallTracer("callTracer", "call_tracer", t) +} + +func testCallTracer(tracerName string, dirPath string, t *testing.T) { + files, err := ioutil.ReadDir(filepath.Join("..", "testdata", dirPath)) + if err != nil { + t.Fatalf("failed to retrieve tracer test suite: %v", err) + } + for _, file := range files { + if !strings.HasSuffix(file.Name(), ".json") { + continue + } + file := file // capture range variable + t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) { + t.Parallel() + + var ( + test = new(callTracerTest) + tx = new(types.Transaction) + ) + // Call tracer test found, read if from disk + if blob, err := ioutil.ReadFile(filepath.Join("..", "testdata", dirPath, file.Name())); err != nil { + t.Fatalf("failed to read testcase: %v", err) + } else if err := json.Unmarshal(blob, test); err != nil { + t.Fatalf("failed to parse testcase: %v", err) + } + if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil { + t.Fatalf("failed to parse testcase input: %v", err) + } + // Configure a blockchain with the given prestate + var ( + signer = types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)), new(big.Int).SetUint64((uint64(test.Context.Time)))) + origin, _ = signer.Sender(tx) + txContext = vm.TxContext{ + Origin: origin, + GasPrice: tx.GasPrice(), + } + context = vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: test.Context.Miner, + BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)), + Time: new(big.Int).SetUint64(uint64(test.Context.Time)), + Difficulty: (*big.Int)(test.Context.Difficulty), + GasLimit: uint64(test.Context.GasLimit), + } + _, statedb = tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false) + ) + tracer, err := tracers.New(tracerName, new(tracers.Context)) + if err != nil { + t.Fatalf("failed to create call tracer: %v", err) + } + evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer}) + msg, err := tx.AsMessage(signer, nil) + if err != nil { + t.Fatalf("failed to prepare transaction for tracing: %v", err) + } + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + if _, err = st.TransitionDb(); err != nil { + t.Fatalf("failed to execute transaction: %v", err) + } + // Retrieve the trace result and compare against the etalon + res, err := tracer.GetResult() + if err != nil { + t.Fatalf("failed to retrieve trace result: %v", err) + } + ret := new(callTrace) + if err := json.Unmarshal(res, ret); err != nil { + t.Fatalf("failed to unmarshal trace result: %v", err) + } + + if !jsonEqual(ret, test.Result) { + // uncomment this for easier debugging + // have, _ := json.MarshalIndent(ret, "", " ") + // want, _ := json.MarshalIndent(test.Result, "", " ") + // t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want)) + t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, test.Result) + } + }) + } +} + +// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to +// comparison +func jsonEqual(x, y interface{}) bool { + xTrace := new(callTrace) + yTrace := new(callTrace) + if xj, err := json.Marshal(x); err == nil { + json.Unmarshal(xj, xTrace) + } else { + return false + } + if yj, err := json.Marshal(y); err == nil { + json.Unmarshal(yj, yTrace) + } else { + return false + } + return reflect.DeepEqual(xTrace, yTrace) +} + +// camel converts a snake cased input string into a camel cased output. +func camel(str string) string { + pieces := strings.Split(str, "_") + for i := 1; i < len(pieces); i++ { + pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:] + } + return strings.Join(pieces, "") +} + +func BenchmarkTracers(b *testing.B) { + files, err := ioutil.ReadDir(filepath.Join("..", "testdata", "call_tracer")) + if err != nil { + b.Fatalf("failed to retrieve tracer test suite: %v", err) + } + for _, file := range files { + if !strings.HasSuffix(file.Name(), ".json") { + continue + } + file := file // capture range variable + b.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(b *testing.B) { + blob, err := ioutil.ReadFile(filepath.Join("..", "testdata", "call_tracer", file.Name())) + if err != nil { + b.Fatalf("failed to read testcase: %v", err) + } + test := new(callTracerTest) + if err := json.Unmarshal(blob, test); err != nil { + b.Fatalf("failed to parse testcase: %v", err) + } + benchTracer("callTracerNative", test, b) + }) + } +} + +func benchTracer(tracerName string, test *callTracerTest, b *testing.B) { + // Configure a blockchain with the given prestate + tx := new(types.Transaction) + if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil { + b.Fatalf("failed to parse testcase input: %v", err) + } + signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)), new(big.Int).SetUint64((uint64(test.Context.Time)))) + msg, err := tx.AsMessage(signer, nil) + if err != nil { + b.Fatalf("failed to prepare transaction for tracing: %v", err) + } + origin, _ := signer.Sender(tx) + txContext := vm.TxContext{ + Origin: origin, + GasPrice: tx.GasPrice(), + } + context := vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: test.Context.Miner, + BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)), + Time: new(big.Int).SetUint64(uint64(test.Context.Time)), + Difficulty: (*big.Int)(test.Context.Difficulty), + GasLimit: uint64(test.Context.GasLimit), + } + _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false) + + b.ReportAllocs() + b.ResetTimer() + for i := 0; i < b.N; i++ { + tracer, err := tracers.New(tracerName, new(tracers.Context)) + if err != nil { + b.Fatalf("failed to create call tracer: %v", err) + } + evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer}) + snap := statedb.Snapshot() + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + if _, err = st.TransitionDb(); err != nil { + b.Fatalf("failed to execute transaction: %v", err) + } + if _, err = tracer.GetResult(); err != nil { + b.Fatal(err) + } + statedb.RevertToSnapshot(snap) + } +} diff --git a/eth/tracers/tracer.go b/eth/tracers/tracer.go new file mode 100644 index 0000000000..5064efd397 --- /dev/null +++ b/eth/tracers/tracer.go @@ -0,0 +1,868 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tracers + +import ( + "encoding/json" + "errors" + "fmt" + "math/big" + "sync/atomic" + "time" + "unsafe" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "gopkg.in/olebedev/go-duktape.v3" +) + +// bigIntegerJS is the minified version of https://github.com/peterolson/BigInteger.js. +const bigIntegerJS = `var bigInt=function(undefined){"use strict";var BASE=1e7,LOG_BASE=7,MAX_INT=9007199254740992,MAX_INT_ARR=smallToArray(MAX_INT),LOG_MAX_INT=Math.log(MAX_INT);function Integer(v,radix){if(typeof v==="undefined")return Integer[0];if(typeof radix!=="undefined")return+radix===10?parseValue(v):parseBase(v,radix);return parseValue(v)}function BigInteger(value,sign){this.value=value;this.sign=sign;this.isSmall=false}BigInteger.prototype=Object.create(Integer.prototype);function SmallInteger(value){this.value=value;this.sign=value<0;this.isSmall=true}SmallInteger.prototype=Object.create(Integer.prototype);function isPrecise(n){return-MAX_INT0)return Math.floor(n);return Math.ceil(n)}function add(a,b){var l_a=a.length,l_b=b.length,r=new Array(l_a),carry=0,base=BASE,sum,i;for(i=0;i=base?1:0;r[i]=sum-carry*base}while(i0)r.push(carry);return r}function addAny(a,b){if(a.length>=b.length)return add(a,b);return add(b,a)}function addSmall(a,carry){var l=a.length,r=new Array(l),base=BASE,sum,i;for(i=0;i0){r[i++]=carry%base;carry=Math.floor(carry/base)}return r}BigInteger.prototype.add=function(v){var n=parseValue(v);if(this.sign!==n.sign){return this.subtract(n.negate())}var a=this.value,b=n.value;if(n.isSmall){return new BigInteger(addSmall(a,Math.abs(b)),this.sign)}return new BigInteger(addAny(a,b),this.sign)};BigInteger.prototype.plus=BigInteger.prototype.add;SmallInteger.prototype.add=function(v){var n=parseValue(v);var a=this.value;if(a<0!==n.sign){return this.subtract(n.negate())}var b=n.value;if(n.isSmall){if(isPrecise(a+b))return new SmallInteger(a+b);b=smallToArray(Math.abs(b))}return new BigInteger(addSmall(b,Math.abs(a)),a<0)};SmallInteger.prototype.plus=SmallInteger.prototype.add;function subtract(a,b){var a_l=a.length,b_l=b.length,r=new Array(a_l),borrow=0,base=BASE,i,difference;for(i=0;i=0){value=subtract(a,b)}else{value=subtract(b,a);sign=!sign}value=arrayToSmall(value);if(typeof value==="number"){if(sign)value=-value;return new SmallInteger(value)}return new BigInteger(value,sign)}function subtractSmall(a,b,sign){var l=a.length,r=new Array(l),carry=-b,base=BASE,i,difference;for(i=0;i=0)};SmallInteger.prototype.minus=SmallInteger.prototype.subtract;BigInteger.prototype.negate=function(){return new BigInteger(this.value,!this.sign)};SmallInteger.prototype.negate=function(){var sign=this.sign;var small=new SmallInteger(-this.value);small.sign=!sign;return small};BigInteger.prototype.abs=function(){return new BigInteger(this.value,false)};SmallInteger.prototype.abs=function(){return new SmallInteger(Math.abs(this.value))};function multiplyLong(a,b){var a_l=a.length,b_l=b.length,l=a_l+b_l,r=createArray(l),base=BASE,product,carry,i,a_i,b_j;for(i=0;i0){r[i++]=carry%base;carry=Math.floor(carry/base)}return r}function shiftLeft(x,n){var r=[];while(n-- >0)r.push(0);return r.concat(x)}function multiplyKaratsuba(x,y){var n=Math.max(x.length,y.length);if(n<=30)return multiplyLong(x,y);n=Math.ceil(n/2);var b=x.slice(n),a=x.slice(0,n),d=y.slice(n),c=y.slice(0,n);var ac=multiplyKaratsuba(a,c),bd=multiplyKaratsuba(b,d),abcd=multiplyKaratsuba(addAny(a,b),addAny(c,d));var product=addAny(addAny(ac,shiftLeft(subtract(subtract(abcd,ac),bd),n)),shiftLeft(bd,2*n));trim(product);return product}function useKaratsuba(l1,l2){return-.012*l1-.012*l2+15e-6*l1*l2>0}BigInteger.prototype.multiply=function(v){var n=parseValue(v),a=this.value,b=n.value,sign=this.sign!==n.sign,abs;if(n.isSmall){if(b===0)return Integer[0];if(b===1)return this;if(b===-1)return this.negate();abs=Math.abs(b);if(abs=0;shift--){quotientDigit=base-1;if(remainder[shift+b_l]!==divisorMostSignificantDigit){quotientDigit=Math.floor((remainder[shift+b_l]*base+remainder[shift+b_l-1])/divisorMostSignificantDigit)}carry=0;borrow=0;l=divisor.length;for(i=0;ib_l){highx=(highx+1)*base}guess=Math.ceil(highx/highy);do{check=multiplySmall(b,guess);if(compareAbs(check,part)<=0)break;guess--}while(guess);result.push(guess);part=subtract(part,check)}result.reverse();return[arrayToSmall(result),arrayToSmall(part)]}function divModSmall(value,lambda){var length=value.length,quotient=createArray(length),base=BASE,i,q,remainder,divisor;remainder=0;for(i=length-1;i>=0;--i){divisor=remainder*base+value[i];q=truncate(divisor/lambda);remainder=divisor-q*lambda;quotient[i]=q|0}return[quotient,remainder|0]}function divModAny(self,v){var value,n=parseValue(v);var a=self.value,b=n.value;var quotient;if(b===0)throw new Error("Cannot divide by zero");if(self.isSmall){if(n.isSmall){return[new SmallInteger(truncate(a/b)),new SmallInteger(a%b)]}return[Integer[0],self]}if(n.isSmall){if(b===1)return[self,Integer[0]];if(b==-1)return[self.negate(),Integer[0]];var abs=Math.abs(b);if(absb.length?1:-1}for(var i=a.length-1;i>=0;i--){if(a[i]!==b[i])return a[i]>b[i]?1:-1}return 0}BigInteger.prototype.compareAbs=function(v){var n=parseValue(v),a=this.value,b=n.value;if(n.isSmall)return 1;return compareAbs(a,b)};SmallInteger.prototype.compareAbs=function(v){var n=parseValue(v),a=Math.abs(this.value),b=n.value;if(n.isSmall){b=Math.abs(b);return a===b?0:a>b?1:-1}return-1};BigInteger.prototype.compare=function(v){if(v===Infinity){return-1}if(v===-Infinity){return 1}var n=parseValue(v),a=this.value,b=n.value;if(this.sign!==n.sign){return n.sign?1:-1}if(n.isSmall){return this.sign?-1:1}return compareAbs(a,b)*(this.sign?-1:1)};BigInteger.prototype.compareTo=BigInteger.prototype.compare;SmallInteger.prototype.compare=function(v){if(v===Infinity){return-1}if(v===-Infinity){return 1}var n=parseValue(v),a=this.value,b=n.value;if(n.isSmall){return a==b?0:a>b?1:-1}if(a<0!==n.sign){return a<0?-1:1}return a<0?1:-1};SmallInteger.prototype.compareTo=SmallInteger.prototype.compare;BigInteger.prototype.equals=function(v){return this.compare(v)===0};SmallInteger.prototype.eq=SmallInteger.prototype.equals=BigInteger.prototype.eq=BigInteger.prototype.equals;BigInteger.prototype.notEquals=function(v){return this.compare(v)!==0};SmallInteger.prototype.neq=SmallInteger.prototype.notEquals=BigInteger.prototype.neq=BigInteger.prototype.notEquals;BigInteger.prototype.greater=function(v){return this.compare(v)>0};SmallInteger.prototype.gt=SmallInteger.prototype.greater=BigInteger.prototype.gt=BigInteger.prototype.greater;BigInteger.prototype.lesser=function(v){return this.compare(v)<0};SmallInteger.prototype.lt=SmallInteger.prototype.lesser=BigInteger.prototype.lt=BigInteger.prototype.lesser;BigInteger.prototype.greaterOrEquals=function(v){return this.compare(v)>=0};SmallInteger.prototype.geq=SmallInteger.prototype.greaterOrEquals=BigInteger.prototype.geq=BigInteger.prototype.greaterOrEquals;BigInteger.prototype.lesserOrEquals=function(v){return this.compare(v)<=0};SmallInteger.prototype.leq=SmallInteger.prototype.lesserOrEquals=BigInteger.prototype.leq=BigInteger.prototype.lesserOrEquals;BigInteger.prototype.isEven=function(){return(this.value[0]&1)===0};SmallInteger.prototype.isEven=function(){return(this.value&1)===0};BigInteger.prototype.isOdd=function(){return(this.value[0]&1)===1};SmallInteger.prototype.isOdd=function(){return(this.value&1)===1};BigInteger.prototype.isPositive=function(){return!this.sign};SmallInteger.prototype.isPositive=function(){return this.value>0};BigInteger.prototype.isNegative=function(){return this.sign};SmallInteger.prototype.isNegative=function(){return this.value<0};BigInteger.prototype.isUnit=function(){return false};SmallInteger.prototype.isUnit=function(){return Math.abs(this.value)===1};BigInteger.prototype.isZero=function(){return false};SmallInteger.prototype.isZero=function(){return this.value===0};BigInteger.prototype.isDivisibleBy=function(v){var n=parseValue(v);var value=n.value;if(value===0)return false;if(value===1)return true;if(value===2)return this.isEven();return this.mod(n).equals(Integer[0])};SmallInteger.prototype.isDivisibleBy=BigInteger.prototype.isDivisibleBy;function isBasicPrime(v){var n=v.abs();if(n.isUnit())return false;if(n.equals(2)||n.equals(3)||n.equals(5))return true;if(n.isEven()||n.isDivisibleBy(3)||n.isDivisibleBy(5))return false;if(n.lesser(25))return true}BigInteger.prototype.isPrime=function(){var isPrime=isBasicPrime(this);if(isPrime!==undefined)return isPrime;var n=this.abs(),nPrev=n.prev();var a=[2,3,5,7,11,13,17,19],b=nPrev,d,t,i,x;while(b.isEven())b=b.divide(2);for(i=0;i-MAX_INT)return new SmallInteger(value-1);return new BigInteger(MAX_INT_ARR,true)};var powersOfTwo=[1];while(2*powersOfTwo[powersOfTwo.length-1]<=BASE)powersOfTwo.push(2*powersOfTwo[powersOfTwo.length-1]);var powers2Length=powersOfTwo.length,highestPower2=powersOfTwo[powers2Length-1];function shift_isSmall(n){return(typeof n==="number"||typeof n==="string")&&+Math.abs(n)<=BASE||n instanceof BigInteger&&n.value.length<=1}BigInteger.prototype.shiftLeft=function(n){if(!shift_isSmall(n)){throw new Error(String(n)+" is too large for shifting.")}n=+n;if(n<0)return this.shiftRight(-n);var result=this;while(n>=powers2Length){result=result.multiply(highestPower2);n-=powers2Length-1}return result.multiply(powersOfTwo[n])};SmallInteger.prototype.shiftLeft=BigInteger.prototype.shiftLeft;BigInteger.prototype.shiftRight=function(n){var remQuo;if(!shift_isSmall(n)){throw new Error(String(n)+" is too large for shifting.")}n=+n;if(n<0)return this.shiftLeft(-n);var result=this;while(n>=powers2Length){if(result.isZero())return result;remQuo=divModAny(result,highestPower2);result=remQuo[1].isNegative()?remQuo[0].prev():remQuo[0];n-=powers2Length-1}remQuo=divModAny(result,powersOfTwo[n]);return remQuo[1].isNegative()?remQuo[0].prev():remQuo[0]};SmallInteger.prototype.shiftRight=BigInteger.prototype.shiftRight;function bitwise(x,y,fn){y=parseValue(y);var xSign=x.isNegative(),ySign=y.isNegative();var xRem=xSign?x.not():x,yRem=ySign?y.not():y;var xDigit=0,yDigit=0;var xDivMod=null,yDivMod=null;var result=[];while(!xRem.isZero()||!yRem.isZero()){xDivMod=divModAny(xRem,highestPower2);xDigit=xDivMod[1].toJSNumber();if(xSign){xDigit=highestPower2-1-xDigit}yDivMod=divModAny(yRem,highestPower2);yDigit=yDivMod[1].toJSNumber();if(ySign){yDigit=highestPower2-1-yDigit}xRem=xDivMod[0];yRem=yDivMod[0];result.push(fn(xDigit,yDigit))}var sum=fn(xSign?1:0,ySign?1:0)!==0?bigInt(-1):bigInt(0);for(var i=result.length-1;i>=0;i-=1){sum=sum.multiply(highestPower2).add(bigInt(result[i]))}return sum}BigInteger.prototype.not=function(){return this.negate().prev()};SmallInteger.prototype.not=BigInteger.prototype.not;BigInteger.prototype.and=function(n){return bitwise(this,n,function(a,b){return a&b})};SmallInteger.prototype.and=BigInteger.prototype.and;BigInteger.prototype.or=function(n){return bitwise(this,n,function(a,b){return a|b})};SmallInteger.prototype.or=BigInteger.prototype.or;BigInteger.prototype.xor=function(n){return bitwise(this,n,function(a,b){return a^b})};SmallInteger.prototype.xor=BigInteger.prototype.xor;var LOBMASK_I=1<<30,LOBMASK_BI=(BASE&-BASE)*(BASE&-BASE)|LOBMASK_I;function roughLOB(n){var v=n.value,x=typeof v==="number"?v|LOBMASK_I:v[0]+v[1]*BASE|LOBMASK_BI;return x&-x}function max(a,b){a=parseValue(a);b=parseValue(b);return a.greater(b)?a:b}function min(a,b){a=parseValue(a);b=parseValue(b);return a.lesser(b)?a:b}function gcd(a,b){a=parseValue(a).abs();b=parseValue(b).abs();if(a.equals(b))return a;if(a.isZero())return b;if(b.isZero())return a;var c=Integer[1],d,t;while(a.isEven()&&b.isEven()){d=Math.min(roughLOB(a),roughLOB(b));a=a.divide(d);b=b.divide(d);c=c.multiply(d)}while(a.isEven()){a=a.divide(roughLOB(a))}do{while(b.isEven()){b=b.divide(roughLOB(b))}if(a.greater(b)){t=b;b=a;a=t}b=b.subtract(a)}while(!b.isZero());return c.isUnit()?a:a.multiply(c)}function lcm(a,b){a=parseValue(a).abs();b=parseValue(b).abs();return a.divide(gcd(a,b)).multiply(b)}function randBetween(a,b){a=parseValue(a);b=parseValue(b);var low=min(a,b),high=max(a,b);var range=high.subtract(low).add(1);if(range.isSmall)return low.add(Math.floor(Math.random()*range));var length=range.value.length-1;var result=[],restricted=true;for(var i=length;i>=0;i--){var top=restricted?range.value[i]:BASE;var digit=truncate(Math.random()*top);result.unshift(digit);if(digit=absBase){if(c==="1"&&absBase===1)continue;throw new Error(c+" is not a valid digit in base "+base+".")}else if(c.charCodeAt(0)-87>=absBase){throw new Error(c+" is not a valid digit in base "+base+".")}}}if(2<=base&&base<=36){if(length<=LOG_MAX_INT/Math.log(base)){var result=parseInt(text,base);if(isNaN(result)){throw new Error(c+" is not a valid digit in base "+base+".")}return new SmallInteger(parseInt(text,base))}}base=parseValue(base);var digits=[];var isNegative=text[0]==="-";for(i=isNegative?1:0;i");digits.push(parseValue(text.slice(start+1,i)))}else throw new Error(c+" is not a valid character")}return parseBaseFromArray(digits,base,isNegative)};function parseBaseFromArray(digits,base,isNegative){var val=Integer[0],pow=Integer[1],i;for(i=digits.length-1;i>=0;i--){val=val.add(digits[i].times(pow));pow=pow.times(base)}return isNegative?val.negate():val}function stringify(digit){var v=digit.value;if(typeof v==="number")v=[v];if(v.length===1&&v[0]<=35){return"0123456789abcdefghijklmnopqrstuvwxyz".charAt(v[0])}return"<"+v+">"}function toBase(n,base){base=bigInt(base);if(base.isZero()){if(n.isZero())return"0";throw new Error("Cannot convert nonzero numbers to base 0.")}if(base.equals(-1)){if(n.isZero())return"0";if(n.isNegative())return new Array(1-n).join("10");return"1"+new Array(+n).join("01")}var minusSign="";if(n.isNegative()&&base.isPositive()){minusSign="-";n=n.abs()}if(base.equals(1)){if(n.isZero())return"0";return minusSign+new Array(+n+1).join(1)}var out=[];var left=n,divmod;while(left.isNegative()||left.compareAbs(base)>=0){divmod=left.divmod(base);left=divmod.quotient;var digit=divmod.remainder;if(digit.isNegative()){digit=base.minus(digit).abs();left=left.next()}out.push(stringify(digit))}out.push(stringify(left));return minusSign+out.reverse().join("")}BigInteger.prototype.toString=function(radix){if(radix===undefined)radix=10;if(radix!==10)return toBase(this,radix);var v=this.value,l=v.length,str=String(v[--l]),zeros="0000000",digit;while(--l>=0){digit=String(v[l]);str+=zeros.slice(digit.length)+digit}var sign=this.sign?"-":"";return sign+str};SmallInteger.prototype.toString=function(radix){if(radix===undefined)radix=10;if(radix!=10)return toBase(this,radix);return String(this.value)};BigInteger.prototype.toJSON=SmallInteger.prototype.toJSON=function(){return this.toString()};BigInteger.prototype.valueOf=function(){return+this.toString()};BigInteger.prototype.toJSNumber=BigInteger.prototype.valueOf;SmallInteger.prototype.valueOf=function(){return this.value};SmallInteger.prototype.toJSNumber=SmallInteger.prototype.valueOf;function parseStringValue(v){if(isPrecise(+v)){var x=+v;if(x===truncate(x))return new SmallInteger(x);throw"Invalid integer: "+v}var sign=v[0]==="-";if(sign)v=v.slice(1);var split=v.split(/e/i);if(split.length>2)throw new Error("Invalid integer: "+split.join("e"));if(split.length===2){var exp=split[1];if(exp[0]==="+")exp=exp.slice(1);exp=+exp;if(exp!==truncate(exp)||!isPrecise(exp))throw new Error("Invalid integer: "+exp+" is not a valid exponent.");var text=split[0];var decimalPlace=text.indexOf(".");if(decimalPlace>=0){exp-=text.length-decimalPlace-1;text=text.slice(0,decimalPlace)+text.slice(decimalPlace+1)}if(exp<0)throw new Error("Cannot include negative exponent part for integers");text+=new Array(exp+1).join("0");v=text}var isValid=/^([0-9][0-9]*)$/.test(v);if(!isValid)throw new Error("Invalid integer: "+v);var r=[],max=v.length,l=LOG_BASE,min=max-l;while(max>0){r.push(+v.slice(min,max));min-=l;if(min<0)min=0;max-=l}trim(r);return new BigInteger(r,sign)}function parseNumberValue(v){if(isPrecise(v)){if(v!==truncate(v))throw new Error(v+" is not an integer.");return new SmallInteger(v)}return parseStringValue(v.toString())}function parseValue(v){if(typeof v==="number"){return parseNumberValue(v)}if(typeof v==="string"){return parseStringValue(v)}return v}for(var i=0;i<1e3;i++){Integer[i]=new SmallInteger(i);if(i>0)Integer[-i]=new SmallInteger(-i)}Integer.one=Integer[1];Integer.zero=Integer[0];Integer.minusOne=Integer[-1];Integer.max=max;Integer.min=min;Integer.gcd=gcd;Integer.lcm=lcm;Integer.isInstance=function(x){return x instanceof BigInteger||x instanceof SmallInteger};Integer.randBetween=randBetween;Integer.fromArray=function(digits,base,isNegative){return parseBaseFromArray(digits.map(parseValue),parseValue(base||10),isNegative)};return Integer}();if(typeof module!=="undefined"&&module.hasOwnProperty("exports")){module.exports=bigInt}if(typeof define==="function"&&define.amd){define("big-integer",[],function(){return bigInt})}; bigInt` + +// makeSlice convert an unsafe memory pointer with the given type into a Go byte +// slice. +// +// Note, the returned slice uses the same memory area as the input arguments. +// If those are duktape stack items, popping them off **will** make the slice +// contents change. +func makeSlice(ptr unsafe.Pointer, size uint) []byte { + sl := struct { + addr uintptr + len int + cap int + }{uintptr(ptr), int(size), int(size)} + + return *(*[]byte)(unsafe.Pointer(&sl)) +} + +// popSlice pops a buffer off the JavaScript stack and returns it as a slice. +func popSlice(ctx *duktape.Context) []byte { + blob := common.CopyBytes(makeSlice(ctx.GetBuffer(-1))) + ctx.Pop() + return blob +} + +// pushBigInt create a JavaScript BigInteger in the VM. +func pushBigInt(n *big.Int, ctx *duktape.Context) { + ctx.GetGlobalString("bigInt") + ctx.PushString(n.String()) + ctx.Call(1) +} + +// opWrapper provides a JavaScript wrapper around OpCode. +type opWrapper struct { + op vm.OpCode +} + +// pushObject assembles a JSVM object wrapping a swappable opcode and pushes it +// onto the VM stack. +func (ow *opWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(int(ow.op)); return 1 }) + vm.PutPropString(obj, "toNumber") + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushString(ow.op.String()); return 1 }) + vm.PutPropString(obj, "toString") + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushBoolean(ow.op.IsPush()); return 1 }) + vm.PutPropString(obj, "isPush") +} + +// memoryWrapper provides a JavaScript wrapper around vm.Memory. +type memoryWrapper struct { + memory *vm.Memory +} + +// slice returns the requested range of memory as a byte slice. +func (mw *memoryWrapper) slice(begin, end int64) []byte { + if end == begin { + return []byte{} + } + if end < begin || begin < 0 { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "offset", begin, "end", end) + return nil + } + if mw.memory.Len() < int(end) { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", begin, "size", end-begin) + return nil + } + return mw.memory.GetCopy(begin, end-begin) +} + +// getUint returns the 32 bytes at the specified address interpreted as a uint. +func (mw *memoryWrapper) getUint(addr int64) *big.Int { + if mw.memory.Len() < int(addr)+32 || addr < 0 { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", addr, "size", 32) + return new(big.Int) + } + return new(big.Int).SetBytes(mw.memory.GetPtr(addr, 32)) +} + +// pushObject assembles a JSVM object wrapping a swappable memory and pushes it +// onto the VM stack. +func (mw *memoryWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Generate the `slice` method which takes two ints and returns a buffer + vm.PushGoFunction(func(ctx *duktape.Context) int { + blob := mw.slice(int64(ctx.GetInt(-2)), int64(ctx.GetInt(-1))) + ctx.Pop2() + + ptr := ctx.PushFixedBuffer(len(blob)) + copy(makeSlice(ptr, uint(len(blob))), blob) + return 1 + }) + vm.PutPropString(obj, "slice") + + // Generate the `getUint` method which takes an int and returns a bigint + vm.PushGoFunction(func(ctx *duktape.Context) int { + offset := int64(ctx.GetInt(-1)) + ctx.Pop() + + pushBigInt(mw.getUint(offset), ctx) + return 1 + }) + vm.PutPropString(obj, "getUint") +} + +// stackWrapper provides a JavaScript wrapper around vm.Stack. +type stackWrapper struct { + stack *vm.Stack +} + +// peek returns the nth-from-the-top element of the stack. +func (sw *stackWrapper) peek(idx int) *big.Int { + if len(sw.stack.Data()) <= idx || idx < 0 { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound stack", "size", len(sw.stack.Data()), "index", idx) + return new(big.Int) + } + return sw.stack.Back(idx).ToBig() +} + +// pushObject assembles a JSVM object wrapping a swappable stack and pushes it +// onto the VM stack. +func (sw *stackWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(len(sw.stack.Data())); return 1 }) + vm.PutPropString(obj, "length") + + // Generate the `peek` method which takes an int and returns a bigint + vm.PushGoFunction(func(ctx *duktape.Context) int { + offset := ctx.GetInt(-1) + ctx.Pop() + + pushBigInt(sw.peek(offset), ctx) + return 1 + }) + vm.PutPropString(obj, "peek") +} + +// dbWrapper provides a JavaScript wrapper around vm.Database. +type dbWrapper struct { + db vm.StateDB +} + +// pushObject assembles a JSVM object wrapping a swappable database and pushes it +// onto the VM stack. +func (dw *dbWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Push the wrapper for statedb.GetBalance + vm.PushGoFunction(func(ctx *duktape.Context) int { + pushBigInt(dw.db.GetBalance(common.BytesToAddress(popSlice(ctx))), ctx) + return 1 + }) + vm.PutPropString(obj, "getBalance") + + // Push the wrapper for statedb.GetNonce + vm.PushGoFunction(func(ctx *duktape.Context) int { + ctx.PushInt(int(dw.db.GetNonce(common.BytesToAddress(popSlice(ctx))))) + return 1 + }) + vm.PutPropString(obj, "getNonce") + + // Push the wrapper for statedb.GetCode + vm.PushGoFunction(func(ctx *duktape.Context) int { + code := dw.db.GetCode(common.BytesToAddress(popSlice(ctx))) + + ptr := ctx.PushFixedBuffer(len(code)) + copy(makeSlice(ptr, uint(len(code))), code) + return 1 + }) + vm.PutPropString(obj, "getCode") + + // Push the wrapper for statedb.GetState + vm.PushGoFunction(func(ctx *duktape.Context) int { + hash := popSlice(ctx) + addr := popSlice(ctx) + + state := dw.db.GetState(common.BytesToAddress(addr), common.BytesToHash(hash)) + + ptr := ctx.PushFixedBuffer(len(state)) + copy(makeSlice(ptr, uint(len(state))), state[:]) + return 1 + }) + vm.PutPropString(obj, "getState") + + // Push the wrapper for statedb.Exists + vm.PushGoFunction(func(ctx *duktape.Context) int { + ctx.PushBoolean(dw.db.Exist(common.BytesToAddress(popSlice(ctx)))) + return 1 + }) + vm.PutPropString(obj, "exists") +} + +// contractWrapper provides a JavaScript wrapper around vm.Contract +type contractWrapper struct { + contract *vm.Contract +} + +// pushObject assembles a JSVM object wrapping a swappable contract and pushes it +// onto the VM stack. +func (cw *contractWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Push the wrapper for contract.Caller + vm.PushGoFunction(func(ctx *duktape.Context) int { + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), cw.contract.Caller().Bytes()) + return 1 + }) + vm.PutPropString(obj, "getCaller") + + // Push the wrapper for contract.Address + vm.PushGoFunction(func(ctx *duktape.Context) int { + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), cw.contract.Address().Bytes()) + return 1 + }) + vm.PutPropString(obj, "getAddress") + + // Push the wrapper for contract.Value + vm.PushGoFunction(func(ctx *duktape.Context) int { + pushBigInt(cw.contract.Value(), ctx) + return 1 + }) + vm.PutPropString(obj, "getValue") + + // Push the wrapper for contract.Input + vm.PushGoFunction(func(ctx *duktape.Context) int { + blob := cw.contract.Input + + ptr := ctx.PushFixedBuffer(len(blob)) + copy(makeSlice(ptr, uint(len(blob))), blob) + return 1 + }) + vm.PutPropString(obj, "getInput") +} + +type frame struct { + typ *string + from *common.Address + to *common.Address + input []byte + gas *uint + value *big.Int +} + +func newFrame() *frame { + return &frame{ + typ: new(string), + from: new(common.Address), + to: new(common.Address), + gas: new(uint), + } +} + +func (f *frame) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.typ); return 1 }) + vm.PutPropString(obj, "getType") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.from); return 1 }) + vm.PutPropString(obj, "getFrom") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.to); return 1 }) + vm.PutPropString(obj, "getTo") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, f.input); return 1 }) + vm.PutPropString(obj, "getInput") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.gas); return 1 }) + vm.PutPropString(obj, "getGas") + + vm.PushGoFunction(func(ctx *duktape.Context) int { + if f.value != nil { + pushValue(ctx, f.value) + } else { + ctx.PushUndefined() + } + return 1 + }) + vm.PutPropString(obj, "getValue") +} + +type frameResult struct { + gasUsed *uint + output []byte + errorValue *string +} + +func newFrameResult() *frameResult { + return &frameResult{ + gasUsed: new(uint), + } +} + +func (r *frameResult) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *r.gasUsed); return 1 }) + vm.PutPropString(obj, "getGasUsed") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, r.output); return 1 }) + vm.PutPropString(obj, "getOutput") + + vm.PushGoFunction(func(ctx *duktape.Context) int { + if r.errorValue != nil { + pushValue(ctx, *r.errorValue) + } else { + ctx.PushUndefined() + } + return 1 + }) + vm.PutPropString(obj, "getError") +} + +// jsTracer provides an implementation of Tracer that evaluates a Javascript +// function for each VM execution step. +type jsTracer struct { + vm *duktape.Context // Javascript VM instance + + tracerObject int // Stack index of the tracer JavaScript object + stateObject int // Stack index of the global state to pull arguments from + + opWrapper *opWrapper // Wrapper around the VM opcode + stackWrapper *stackWrapper // Wrapper around the VM stack + memoryWrapper *memoryWrapper // Wrapper around the VM memory + contractWrapper *contractWrapper // Wrapper around the contract object + dbWrapper *dbWrapper // Wrapper around the VM environment + + pcValue *uint // Swappable pc value wrapped by a log accessor + gasValue *uint // Swappable gas value wrapped by a log accessor + costValue *uint // Swappable cost value wrapped by a log accessor + depthValue *uint // Swappable depth value wrapped by a log accessor + errorValue *string // Swappable error value wrapped by a log accessor + refundValue *uint // Swappable refund value wrapped by a log accessor + + frame *frame // Represents entry into call frame. Fields are swappable + frameResult *frameResult // Represents exit from a call frame. Fields are swappable + + ctx map[string]interface{} // Transaction context gathered throughout execution + err error // Error, if one has occurred + + interrupt uint32 // Atomic flag to signal execution interruption + reason error // Textual reason for the interruption + + activePrecompiles []common.Address // Updated on CaptureStart based on given rules + traceSteps bool // When true, will invoke step() on each opcode + traceCallFrames bool // When true, will invoke enter() and exit() js funcs +} + +// Context contains some contextual infos for a transaction execution that is not +// available from within the EVM object. +type Context struct { + BlockHash common.Hash // Hash of the block the tx is contained within (zero if dangling tx or call) + TxIndex int // Index of the transaction within a block (zero if dangling tx or call) + TxHash common.Hash // Hash of the transaction being traced (zero if dangling call) +} + +// New instantiates a new tracer instance. code specifies a Javascript snippet, +// which must evaluate to an expression returning an object with 'step', 'fault' +// and 'result' functions. +func newJsTracer(code string, ctx *Context) (*jsTracer, error) { + tracer := &jsTracer{ + vm: duktape.New(), + ctx: make(map[string]interface{}), + opWrapper: new(opWrapper), + stackWrapper: new(stackWrapper), + memoryWrapper: new(memoryWrapper), + contractWrapper: new(contractWrapper), + dbWrapper: new(dbWrapper), + pcValue: new(uint), + gasValue: new(uint), + costValue: new(uint), + depthValue: new(uint), + refundValue: new(uint), + frame: newFrame(), + frameResult: newFrameResult(), + } + if ctx.BlockHash != (common.Hash{}) { + tracer.ctx["blockHash"] = ctx.BlockHash + + if ctx.TxHash != (common.Hash{}) { + tracer.ctx["txIndex"] = ctx.TxIndex + tracer.ctx["txHash"] = ctx.TxHash + } + } + // Set up builtins for this environment + tracer.vm.PushGlobalGoFunction("toHex", func(ctx *duktape.Context) int { + ctx.PushString(hexutil.Encode(popSlice(ctx))) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toWord", func(ctx *duktape.Context) int { + var word common.Hash + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + word = common.BytesToHash(makeSlice(ptr, size)) + } else { + word = common.HexToHash(ctx.GetString(-1)) + } + ctx.Pop() + copy(makeSlice(ctx.PushFixedBuffer(32), 32), word[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toAddress", func(ctx *duktape.Context) int { + var addr common.Address + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + addr = common.BytesToAddress(makeSlice(ptr, size)) + } else { + addr = common.HexToAddress(ctx.GetString(-1)) + } + ctx.Pop() + copy(makeSlice(ctx.PushFixedBuffer(20), 20), addr[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toContract", func(ctx *duktape.Context) int { + var from common.Address + if ptr, size := ctx.GetBuffer(-2); ptr != nil { + from = common.BytesToAddress(makeSlice(ptr, size)) + } else { + from = common.HexToAddress(ctx.GetString(-2)) + } + nonce := uint64(ctx.GetInt(-1)) + ctx.Pop2() + + contract := crypto.CreateAddress(from, nonce) + copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toContract2", func(ctx *duktape.Context) int { + var from common.Address + if ptr, size := ctx.GetBuffer(-3); ptr != nil { + from = common.BytesToAddress(makeSlice(ptr, size)) + } else { + from = common.HexToAddress(ctx.GetString(-3)) + } + // Retrieve salt hex string from js stack + salt := common.HexToHash(ctx.GetString(-2)) + // Retrieve code slice from js stack + var code []byte + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + code = common.CopyBytes(makeSlice(ptr, size)) + } else { + code = common.FromHex(ctx.GetString(-1)) + } + codeHash := crypto.Keccak256(code) + ctx.Pop3() + contract := crypto.CreateAddress2(from, salt, codeHash) + copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("isPrecompiled", func(ctx *duktape.Context) int { + addr := common.BytesToAddress(popSlice(ctx)) + for _, p := range tracer.activePrecompiles { + if p == addr { + ctx.PushBoolean(true) + return 1 + } + } + ctx.PushBoolean(false) + return 1 + }) + tracer.vm.PushGlobalGoFunction("slice", func(ctx *duktape.Context) int { + start, end := ctx.GetInt(-2), ctx.GetInt(-1) + ctx.Pop2() + + blob := popSlice(ctx) + size := end - start + + if start < 0 || start > end || end > len(blob) { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", len(blob), "offset", start, "size", size) + ctx.PushFixedBuffer(0) + return 1 + } + copy(makeSlice(ctx.PushFixedBuffer(size), uint(size)), blob[start:end]) + return 1 + }) + // Push the JavaScript tracer as object #0 onto the JSVM stack and validate it + if err := tracer.vm.PevalString("(" + code + ")"); err != nil { + log.Warn("Failed to compile tracer", "err", err) + return nil, err + } + tracer.tracerObject = 0 // yeah, nice, eval can't return the index itself + + hasStep := tracer.vm.GetPropString(tracer.tracerObject, "step") + tracer.vm.Pop() + + if !tracer.vm.GetPropString(tracer.tracerObject, "fault") { + return nil, fmt.Errorf("trace object must expose a function fault()") + } + tracer.vm.Pop() + + if !tracer.vm.GetPropString(tracer.tracerObject, "result") { + return nil, fmt.Errorf("trace object must expose a function result()") + } + tracer.vm.Pop() + + hasEnter := tracer.vm.GetPropString(tracer.tracerObject, "enter") + tracer.vm.Pop() + hasExit := tracer.vm.GetPropString(tracer.tracerObject, "exit") + tracer.vm.Pop() + if hasEnter != hasExit { + return nil, fmt.Errorf("trace object must expose either both or none of enter() and exit()") + } + tracer.traceCallFrames = hasEnter && hasExit + tracer.traceSteps = hasStep + + // Tracer is valid, inject the big int library to access large numbers + tracer.vm.EvalString(bigIntegerJS) + tracer.vm.PutGlobalString("bigInt") + + // Push the global environment state as object #1 into the JSVM stack + tracer.stateObject = tracer.vm.PushObject() + + logObject := tracer.vm.PushObject() + + tracer.opWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "op") + + tracer.stackWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "stack") + + tracer.memoryWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "memory") + + tracer.contractWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "contract") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.pcValue); return 1 }) + tracer.vm.PutPropString(logObject, "getPC") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.gasValue); return 1 }) + tracer.vm.PutPropString(logObject, "getGas") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.costValue); return 1 }) + tracer.vm.PutPropString(logObject, "getCost") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.depthValue); return 1 }) + tracer.vm.PutPropString(logObject, "getDepth") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.refundValue); return 1 }) + tracer.vm.PutPropString(logObject, "getRefund") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { + if tracer.errorValue != nil { + ctx.PushString(*tracer.errorValue) + } else { + ctx.PushUndefined() + } + return 1 + }) + tracer.vm.PutPropString(logObject, "getError") + + tracer.vm.PutPropString(tracer.stateObject, "log") + + tracer.frame.pushObject(tracer.vm) + tracer.vm.PutPropString(tracer.stateObject, "frame") + + tracer.frameResult.pushObject(tracer.vm) + tracer.vm.PutPropString(tracer.stateObject, "frameResult") + + tracer.dbWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(tracer.stateObject, "db") + + return tracer, nil +} + +// Stop terminates execution of the tracer at the first opportune moment. +func (jst *jsTracer) Stop(err error) { + jst.reason = err + atomic.StoreUint32(&jst.interrupt, 1) +} + +// call executes a method on a JS object, catching any errors, formatting and +// returning them as error objects. +func (jst *jsTracer) call(noret bool, method string, args ...string) (json.RawMessage, error) { + // Execute the JavaScript call and return any error + jst.vm.PushString(method) + for _, arg := range args { + jst.vm.GetPropString(jst.stateObject, arg) + } + code := jst.vm.PcallProp(jst.tracerObject, len(args)) + defer jst.vm.Pop() + + if code != 0 { + err := jst.vm.SafeToString(-1) + return nil, errors.New(err) + } + // No error occurred, extract return value and return + if noret { + return nil, nil + } + // Push a JSON marshaller onto the stack. We can't marshal from the out- + // side because duktape can crash on large nestings and we can't catch + // C++ exceptions ourselves from Go. TODO(karalabe): Yuck, why wrap?! + jst.vm.PushString("(JSON.stringify)") + jst.vm.Eval() + + jst.vm.Swap(-1, -2) + if code = jst.vm.Pcall(1); code != 0 { + err := jst.vm.SafeToString(-1) + return nil, errors.New(err) + } + return json.RawMessage(jst.vm.SafeToString(-1)), nil +} + +func wrapError(context string, err error) error { + return fmt.Errorf("%v in server-side tracer function '%v'", err, context) +} + +// CaptureStart implements the Tracer interface to initialize the tracing operation. +func (jst *jsTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + jst.ctx["type"] = "CALL" + if create { + jst.ctx["type"] = "CREATE" + } + jst.ctx["from"] = from + jst.ctx["to"] = to + jst.ctx["input"] = input + jst.ctx["gas"] = gas + jst.ctx["gasPrice"] = env.TxContext.GasPrice + jst.ctx["value"] = value + + // Initialize the context + jst.ctx["block"] = env.Context.BlockNumber.Uint64() + jst.dbWrapper.db = env.StateDB + // Update list of precompiles based on current block + rules := env.ChainConfig().AvalancheRules(env.Context.BlockNumber, env.Context.Time) + jst.activePrecompiles = vm.ActivePrecompiles(rules) + + // Compute intrinsic gas + isHomestead := env.ChainConfig().IsHomestead(env.Context.BlockNumber) + isIstanbul := env.ChainConfig().IsIstanbul(env.Context.BlockNumber) + intrinsicGas, err := core.IntrinsicGas(input, nil, jst.ctx["type"] == "CREATE", isHomestead, isIstanbul) + if err != nil { + return + } + jst.ctx["intrinsicGas"] = intrinsicGas +} + +// CaptureState implements the Tracer interface to trace a single step of VM execution. +func (jst *jsTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { + if !jst.traceSteps { + return + } + if jst.err != nil { + return + } + // If tracing was interrupted, set the error and stop + if atomic.LoadUint32(&jst.interrupt) > 0 { + jst.err = jst.reason + env.Cancel() + return + } + jst.opWrapper.op = op + jst.stackWrapper.stack = scope.Stack + jst.memoryWrapper.memory = scope.Memory + jst.contractWrapper.contract = scope.Contract + + *jst.pcValue = uint(pc) + *jst.gasValue = uint(gas) + *jst.costValue = uint(cost) + *jst.depthValue = uint(depth) + *jst.refundValue = uint(env.StateDB.GetRefund()) + + jst.errorValue = nil + if err != nil { + jst.errorValue = new(string) + *jst.errorValue = err.Error() + } + + if _, err := jst.call(true, "step", "log", "db"); err != nil { + jst.err = wrapError("step", err) + } +} + +// CaptureFault implements the Tracer interface to trace an execution fault +func (jst *jsTracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) { + if jst.err != nil { + return + } + // Apart from the error, everything matches the previous invocation + jst.errorValue = new(string) + *jst.errorValue = err.Error() + + if _, err := jst.call(true, "fault", "log", "db"); err != nil { + jst.err = wrapError("fault", err) + } +} + +// CaptureEnd is called after the call finishes to finalize the tracing. +func (jst *jsTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) { + jst.ctx["output"] = output + jst.ctx["time"] = t.String() + jst.ctx["gasUsed"] = gasUsed + + if err != nil { + jst.ctx["error"] = err.Error() + } +} + +// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct). +func (jst *jsTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { + if !jst.traceCallFrames { + return + } + if jst.err != nil { + return + } + // If tracing was interrupted, set the error and stop + if atomic.LoadUint32(&jst.interrupt) > 0 { + jst.err = jst.reason + return + } + + *jst.frame.typ = typ.String() + *jst.frame.from = from + *jst.frame.to = to + jst.frame.input = common.CopyBytes(input) + *jst.frame.gas = uint(gas) + jst.frame.value = nil + if value != nil { + jst.frame.value = new(big.Int).SetBytes(value.Bytes()) + } + + if _, err := jst.call(true, "enter", "frame"); err != nil { + jst.err = wrapError("enter", err) + } +} + +// CaptureExit is called when EVM exits a scope, even if the scope didn't +// execute any code. +func (jst *jsTracer) CaptureExit(output []byte, gasUsed uint64, err error) { + if !jst.traceCallFrames { + return + } + // If tracing was interrupted, set the error and stop + if atomic.LoadUint32(&jst.interrupt) > 0 { + jst.err = jst.reason + return + } + + jst.frameResult.output = common.CopyBytes(output) + *jst.frameResult.gasUsed = uint(gasUsed) + jst.frameResult.errorValue = nil + if err != nil { + jst.frameResult.errorValue = new(string) + *jst.frameResult.errorValue = err.Error() + } + + if _, err := jst.call(true, "exit", "frameResult"); err != nil { + jst.err = wrapError("exit", err) + } +} + +// GetResult calls the Javascript 'result' function and returns its value, or any accumulated error +func (jst *jsTracer) GetResult() (json.RawMessage, error) { + // Transform the context into a JavaScript object and inject into the state + obj := jst.vm.PushObject() + + for key, val := range jst.ctx { + jst.addToObj(obj, key, val) + } + jst.vm.PutPropString(jst.stateObject, "ctx") + + // Finalize the trace and return the results + result, err := jst.call(false, "result", "ctx", "db") + if err != nil { + jst.err = wrapError("result", err) + } + // Clean up the JavaScript environment + jst.vm.DestroyHeap() + jst.vm.Destroy() + + return result, jst.err +} + +// addToObj pushes a field to a JS object. +func (jst *jsTracer) addToObj(obj int, key string, val interface{}) { + pushValue(jst.vm, val) + jst.vm.PutPropString(obj, key) +} + +func pushValue(ctx *duktape.Context, val interface{}) { + switch val := val.(type) { + case uint64: + ctx.PushUint(uint(val)) + case string: + ctx.PushString(val) + case []byte: + ptr := ctx.PushFixedBuffer(len(val)) + copy(makeSlice(ptr, uint(len(val))), val) + case common.Address: + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), val[:]) + case *big.Int: + pushBigInt(val, ctx) + case int: + ctx.PushInt(val) + case uint: + ctx.PushUint(val) + case common.Hash: + ptr := ctx.PushFixedBuffer(32) + copy(makeSlice(ptr, 32), val[:]) + default: + panic(fmt.Sprintf("unsupported type: %T", val)) + } +} diff --git a/eth/tracers/tracer_test.go b/eth/tracers/tracer_test.go new file mode 100644 index 0000000000..7ec7565998 --- /dev/null +++ b/eth/tracers/tracer_test.go @@ -0,0 +1,280 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tracers + +import ( + "encoding/json" + "errors" + "math/big" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" +) + +type account struct{} + +func (account) SubBalance(amount *big.Int) {} +func (account) AddBalance(amount *big.Int) {} +func (account) SetAddress(common.Address) {} +func (account) Value() *big.Int { return nil } +func (account) SetBalance(*big.Int) {} +func (account) SetNonce(uint64) {} +func (account) Balance() *big.Int { return nil } +func (account) Address() common.Address { return common.Address{} } +func (account) SetCode(common.Hash, []byte) {} +func (account) ForEachStorage(cb func(key, value common.Hash) bool) {} + +type dummyStatedb struct { + state.StateDB +} + +func (*dummyStatedb) GetRefund() uint64 { return 1337 } +func (*dummyStatedb) GetBalance(addr common.Address) *big.Int { return new(big.Int) } + +type vmContext struct { + blockCtx vm.BlockContext + txCtx vm.TxContext +} + +func testCtx() *vmContext { + return &vmContext{blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}} +} + +func runTrace(tracer Tracer, vmctx *vmContext, chaincfg *params.ChainConfig) (json.RawMessage, error) { + env := vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, chaincfg, vm.Config{Debug: true, Tracer: tracer}) + var ( + startGas uint64 = 10000 + value = big.NewInt(0) + ) + contract := vm.NewContract(account{}, account{}, value, startGas) + contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x1, 0x0} + + tracer.CaptureStart(env, contract.Caller(), contract.Address(), false, []byte{}, startGas, value) + ret, err := env.Interpreter().Run(contract, []byte{}, false) + tracer.CaptureEnd(ret, startGas-contract.Gas, 1, err) + if err != nil { + return nil, err + } + return tracer.GetResult() +} + +func TestTracer(t *testing.T) { + execTracer := func(code string) ([]byte, string) { + t.Helper() + tracer, err := New(code, new(Context)) + if err != nil { + t.Fatal(err) + } + ret, err := runTrace(tracer, &vmContext{ + blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, + txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}, + }, params.TestChainConfig) + if err != nil { + return nil, err.Error() // Stringify to allow comparison without nil checks + } + return ret, "" + } + for i, tt := range []struct { + code string + want string + fail string + }{ + { // tests that we don't panic on bad arguments to memory access + code: "{depths: [], step: function(log) { this.depths.push(log.memory.slice(-1,-2)); }, fault: function() {}, result: function() { return this.depths; }}", + want: `[{},{},{}]`, + }, { // tests that we don't panic on bad arguments to stack peeks + code: "{depths: [], step: function(log) { this.depths.push(log.stack.peek(-1)); }, fault: function() {}, result: function() { return this.depths; }}", + want: `["0","0","0"]`, + }, { // tests that we don't panic on bad arguments to memory getUint + code: "{ depths: [], step: function(log, db) { this.depths.push(log.memory.getUint(-64));}, fault: function() {}, result: function() { return this.depths; }}", + want: `["0","0","0"]`, + }, { // tests some general counting + code: "{count: 0, step: function() { this.count += 1; }, fault: function() {}, result: function() { return this.count; }}", + want: `3`, + }, { // tests that depth is reported correctly + code: "{depths: [], step: function(log) { this.depths.push(log.stack.length()); }, fault: function() {}, result: function() { return this.depths; }}", + want: `[0,1,2]`, + }, { // tests to-string of opcodes + code: "{opcodes: [], step: function(log) { this.opcodes.push(log.op.toString()); }, fault: function() {}, result: function() { return this.opcodes; }}", + want: `["PUSH1","PUSH1","STOP"]`, + }, { // tests intrinsic gas + code: "{depths: [], step: function() {}, fault: function() {}, result: function(ctx) { return ctx.gasPrice+'.'+ctx.gasUsed+'.'+ctx.intrinsicGas; }}", + want: `"100000.6.21000"`, + }, { // tests too deep object / serialization crash + code: "{step: function() {}, fault: function() {}, result: function() { var o={}; var x=o; for (var i=0; i<1000; i++){ o.foo={}; o=o.foo; } return x; }}", + fail: "RangeError: json encode recursion limit in server-side tracer function 'result'", + }, + } { + if have, err := execTracer(tt.code); tt.want != string(have) || tt.fail != err { + t.Errorf("testcase %d: expected return value to be '%s' got '%s', error to be '%s' got '%s'\n\tcode: %v", i, tt.want, string(have), tt.fail, err, tt.code) + } + } +} + +func TestHalt(t *testing.T) { + t.Skip("duktape doesn't support abortion") + + timeout := errors.New("stahp") + tracer, err := New("{step: function() { while(1); }, result: function() { return null; }}", new(Context)) + if err != nil { + t.Fatal(err) + } + go func() { + time.Sleep(1 * time.Second) + tracer.Stop(timeout) + }() + if _, err = runTrace(tracer, testCtx(), params.TestChainConfig); err.Error() != "stahp in server-side tracer function 'step'" { + t.Errorf("Expected timeout error, got %v", err) + } +} + +func TestHaltBetweenSteps(t *testing.T) { + tracer, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }}", new(Context)) + if err != nil { + t.Fatal(err) + } + env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) + scope := &vm.ScopeContext{ + Contract: vm.NewContract(&account{}, &account{}, big.NewInt(0), 0), + } + tracer.CaptureState(env, 0, 0, 0, 0, scope, nil, 0, nil) + timeout := errors.New("stahp") + tracer.Stop(timeout) + tracer.CaptureState(env, 0, 0, 0, 0, scope, nil, 0, nil) + + if _, err := tracer.GetResult(); err.Error() != timeout.Error() { + t.Errorf("Expected timeout error, got %v", err) + } +} + +// TestNoStepExec tests a regular value transfer (no exec), and accessing the statedb +// in 'result' +func TestNoStepExec(t *testing.T) { + runEmptyTrace := func(tracer Tracer, vmctx *vmContext) (json.RawMessage, error) { + env := vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) + startGas := uint64(10000) + contract := vm.NewContract(account{}, account{}, big.NewInt(0), startGas) + tracer.CaptureStart(env, contract.Caller(), contract.Address(), false, []byte{}, startGas, big.NewInt(0)) + tracer.CaptureEnd(nil, startGas-contract.Gas, 1, nil) + return tracer.GetResult() + } + execTracer := func(code string) []byte { + t.Helper() + tracer, err := New(code, new(Context)) + if err != nil { + t.Fatal(err) + } + ret, err := runEmptyTrace(tracer, &vmContext{ + blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, + txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}, + }) + if err != nil { + t.Fatal(err) + } + return ret + } + for i, tt := range []struct { + code string + want string + }{ + { // tests that we don't panic on accessing the db methods + code: "{depths: [], step: function() {}, fault: function() {}, result: function(ctx, db){ return db.getBalance(ctx.to)} }", + want: `"0"`, + }, + } { + if have := execTracer(tt.code); tt.want != string(have) { + t.Errorf("testcase %d: expected return value to be %s got %s\n\tcode: %v", i, tt.want, string(have), tt.code) + } + } +} + +func TestIsPrecompile(t *testing.T) { + chaincfg := ¶ms.ChainConfig{ChainID: big.NewInt(1), HomesteadBlock: big.NewInt(0), EIP150Block: big.NewInt(0), EIP150Hash: common.Hash{}, EIP155Block: big.NewInt(0), EIP158Block: big.NewInt(0), ByzantiumBlock: big.NewInt(100), ConstantinopleBlock: big.NewInt(0), PetersburgBlock: big.NewInt(0), IstanbulBlock: big.NewInt(200), MuirGlacierBlock: big.NewInt(0), SubnetEVMTimestamp: big.NewInt(0)} + chaincfg.ByzantiumBlock = big.NewInt(100) + chaincfg.IstanbulBlock = big.NewInt(200) + chaincfg.SubnetEVMTimestamp = big.NewInt(300) + txCtx := vm.TxContext{GasPrice: big.NewInt(100000)} + tracer, err := New("{addr: toAddress('0000000000000000000000000000000000000009'), res: null, step: function() { this.res = isPrecompiled(this.addr); }, fault: function() {}, result: function() { return this.res; }}", new(Context)) + if err != nil { + t.Fatal(err) + } + + blockCtx := vm.BlockContext{BlockNumber: big.NewInt(150), Time: big.NewInt(150)} + res, err := runTrace(tracer, &vmContext{blockCtx, txCtx}, chaincfg) + if err != nil { + t.Error(err) + } + if string(res) != "false" { + t.Errorf("Tracer should not consider blake2f as precompile in byzantium") + } + + tracer, _ = New("{addr: toAddress('0000000000000000000000000000000000000009'), res: null, step: function() { this.res = isPrecompiled(this.addr); }, fault: function() {}, result: function() { return this.res; }}", new(Context)) + blockCtx = vm.BlockContext{BlockNumber: big.NewInt(250), Time: big.NewInt(250)} + res, err = runTrace(tracer, &vmContext{blockCtx, txCtx}, chaincfg) + if err != nil { + t.Error(err) + } + if string(res) != "true" { + t.Errorf("Tracer should consider blake2f as precompile in istanbul") + } +} + +func TestEnterExit(t *testing.T) { + // test that either both or none of enter() and exit() are defined + if _, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }, enter: function() {}}", new(Context)); err == nil { + t.Fatal("tracer creation should've failed without exit() definition") + } + if _, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }, enter: function() {}, exit: function() {}}", new(Context)); err != nil { + t.Fatal(err) + } + + // test that the enter and exit method are correctly invoked and the values passed + tracer, err := New("{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, step: function() {}, fault: function() {}, result: function() { return {enters: this.enters, exits: this.exits, enterGas: this.enterGas, gasUsed: this.gasUsed} }, enter: function(frame) { this.enters++; this.enterGas = frame.getGas(); }, exit: function(res) { this.exits++; this.gasUsed = res.getGasUsed(); }}", new(Context)) + if err != nil { + t.Fatal(err) + } + + scope := &vm.ScopeContext{ + Contract: vm.NewContract(&account{}, &account{}, big.NewInt(0), 0), + } + + tracer.CaptureEnter(vm.CALL, scope.Contract.Caller(), scope.Contract.Address(), []byte{}, 1000, new(big.Int)) + tracer.CaptureExit([]byte{}, 400, nil) + + have, err := tracer.GetResult() + if err != nil { + t.Fatal(err) + } + want := `{"enters":1,"exits":1,"enterGas":1000,"gasUsed":400}` + if string(have) != want { + t.Errorf("Number of invocations of enter() and exit() is wrong. Have %s, want %s\n", have, want) + } +} diff --git a/eth/tracers/tracers.go b/eth/tracers/tracers.go new file mode 100644 index 0000000000..93a5587bdc --- /dev/null +++ b/eth/tracers/tracers.go @@ -0,0 +1,95 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package tracers is a collection of JavaScript transaction tracers.package tracers + +package tracers + +import ( + "encoding/json" + "strings" + "unicode" + + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/eth/tracers/internal/tracers" +) + +// Tracer interface extends vm.EVMLogger and additionally +// allows collecting the tracing result. +type Tracer interface { + vm.EVMLogger + GetResult() (json.RawMessage, error) + // Stop terminates execution of the tracer at the first opportune moment. + Stop(err error) +} + +var ( + nativeTracers map[string]func() Tracer = make(map[string]func() Tracer) + jsTracers = make(map[string]string) +) + +// RegisterNativeTracer makes native tracers which adhere +// to the `Tracer` interface available to the rest of the codebase. +// It is typically invoked in the `init()` function, e.g. see the `native/call.go`. +func RegisterNativeTracer(name string, ctor func() Tracer) { + nativeTracers[name] = ctor +} + +// New returns a new instance of a tracer, +// 1. If 'code' is the name of a registered native tracer, then that tracer +// is instantiated and returned +// 2. If 'code' is the name of a registered js-tracer, then that tracer is +// instantiated and returned +// 3. Otherwise, the code is interpreted as the js code of a js-tracer, and +// is evaluated and returned. +func New(code string, ctx *Context) (Tracer, error) { + // Resolve native tracer + if fn, ok := nativeTracers[code]; ok { + return fn(), nil + } + // Resolve js-tracers by name and assemble the tracer object + if tracer, ok := jsTracers[code]; ok { + code = tracer + } + return newJsTracer(code, ctx) +} + +// camel converts a snake cased input string into a camel cased output. +func camel(str string) string { + pieces := strings.Split(str, "_") + for i := 1; i < len(pieces); i++ { + pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:] + } + return strings.Join(pieces, "") +} + +// init retrieves the JavaScript transaction tracers included in go-ethereum. +func init() { + for _, file := range tracers.AssetNames() { + name := camel(strings.TrimSuffix(file, ".js")) + jsTracers[name] = string(tracers.MustAsset(file)) + } +} diff --git a/eth/tracers/tracers_test.go b/eth/tracers/tracers_test.go new file mode 100644 index 0000000000..c7ff96a7a8 --- /dev/null +++ b/eth/tracers/tracers_test.go @@ -0,0 +1,369 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tracers + +import ( + "crypto/ecdsa" + "crypto/rand" + "encoding/json" + "math/big" + "reflect" + "testing" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/tests" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" +) + +// To generate a new callTracer test, copy paste the makeTest method below into +// a Geth console and call it with a transaction hash you which to export. + +/* +// makeTest generates a callTracer test by running a prestate reassembled and a +// call trace run, assembling all the gathered information into a test case. +var makeTest = function(tx, rewind) { + // Generate the genesis block from the block, transaction and prestate data + var block = eth.getBlock(eth.getTransaction(tx).blockHash); + var genesis = eth.getBlock(block.parentHash); + + delete genesis.gasUsed; + delete genesis.logsBloom; + delete genesis.parentHash; + delete genesis.receiptsRoot; + delete genesis.sha3Uncles; + delete genesis.size; + delete genesis.transactions; + delete genesis.transactionsRoot; + delete genesis.uncles; + + genesis.gasLimit = genesis.gasLimit.toString(); + genesis.number = genesis.number.toString(); + genesis.timestamp = genesis.timestamp.toString(); + + genesis.alloc = debug.traceTransaction(tx, {tracer: "prestateTracer", rewind: rewind}); + for (var key in genesis.alloc) { + genesis.alloc[key].nonce = genesis.alloc[key].nonce.toString(); + } + genesis.config = admin.nodeInfo.protocols.eth.config; + + // Generate the call trace and produce the test input + var result = debug.traceTransaction(tx, {tracer: "callTracer", rewind: rewind}); + delete result.time; + + console.log(JSON.stringify({ + genesis: genesis, + context: { + number: block.number.toString(), + difficulty: block.difficulty, + timestamp: block.timestamp.toString(), + gasLimit: block.gasLimit.toString(), + miner: block.miner, + }, + input: eth.getRawTransaction(tx), + result: result, + }, null, 2)); +} +*/ + +// callTrace is the result of a callTracer run. +type callTrace struct { + Type string `json:"type"` + From common.Address `json:"from"` + To common.Address `json:"to"` + Input hexutil.Bytes `json:"input"` + Output hexutil.Bytes `json:"output"` + Gas *hexutil.Uint64 `json:"gas,omitempty"` + GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"` + Value *hexutil.Big `json:"value,omitempty"` + Error string `json:"error,omitempty"` + Calls []callTrace `json:"calls,omitempty"` +} + +// TestZeroValueToNotExitCall tests the calltracer(s) on the following: +// Tx to A, A calls B with zero value. B does not already exist. +// Expected: that enter/exit is invoked and the inner call is shown in the result +func TestZeroValueToNotExitCall(t *testing.T) { + to := common.HexToAddress("0x00000000000000000000000000000000deadbeef") + privkey, err := crypto.HexToECDSA("0000000000000000deadbeef00000000000000000000000000000000deadbeef") + if err != nil { + t.Fatalf("err %v", err) + } + signer := types.NewEIP155Signer(big.NewInt(1)) + tx, err := types.SignNewTx(privkey, signer, &types.LegacyTx{ + GasPrice: big.NewInt(0), + Gas: 50000, + To: &to, + }) + if err != nil { + t.Fatalf("err %v", err) + } + origin, _ := signer.Sender(tx) + txContext := vm.TxContext{ + Origin: origin, + GasPrice: big.NewInt(1), + } + context := vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: common.Address{}, + BlockNumber: new(big.Int).SetUint64(8000000), + Time: new(big.Int).SetUint64(5), + Difficulty: big.NewInt(0x30000), + GasLimit: uint64(6000000), + BaseFee: big.NewInt(0), + } + code := []byte{ + byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), // in and outs zero + byte(vm.DUP1), byte(vm.PUSH1), 0xff, byte(vm.GAS), // value=0,address=0xff, gas=GAS + byte(vm.CALL), + } + alloc := core.GenesisAlloc{ + to: core.GenesisAccount{ + Nonce: 1, + Code: code, + }, + origin: core.GenesisAccount{ + Nonce: 0, + Balance: big.NewInt(500000000000000), + }, + } + _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false) + // Create the tracer, the EVM environment and run it + tracer, err := New("callTracerJs", new(Context)) + if err != nil { + t.Fatalf("failed to create call tracer: %v", err) + } + evm := vm.NewEVM(context, txContext, statedb, params.SubnetEVMDefaultChainConfig, vm.Config{Debug: true, Tracer: tracer}) + msg, err := tx.AsMessage(signer, nil) + if err != nil { + t.Fatalf("failed to prepare transaction for tracing: %v", err) + } + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + if _, err = st.TransitionDb(); err != nil { + t.Fatalf("failed to execute transaction: %v", err) + } + // Retrieve the trace result and compare against the etalon + res, err := tracer.GetResult() + if err != nil { + t.Fatalf("failed to retrieve trace result: %v", err) + } + have := new(callTrace) + if err := json.Unmarshal(res, have); err != nil { + t.Fatalf("failed to unmarshal trace result: %v", err) + } + wantStr := `{"type":"CALL","from":"0x682a80a6f560eec50d54e63cbeda1c324c5f8d1b","to":"0x00000000000000000000000000000000deadbeef","value":"0x0","gas":"0x7148","gasUsed":"0xa3c","input":"0x","output":"0x","calls":[{"type":"CALL","from":"0x00000000000000000000000000000000deadbeef","to":"0x00000000000000000000000000000000000000ff","value":"0x0","gas":"0x6570","gasUsed":"0x0","input":"0x","output":"0x"}]}` + want := new(callTrace) + json.Unmarshal([]byte(wantStr), want) + if !jsonEqual(have, want) { + t.Error("have != want") + } +} + +func TestPrestateTracerCreate2(t *testing.T) { + unsignedTx := types.NewTransaction(1, common.HexToAddress("0x00000000000000000000000000000000deadbeef"), + new(big.Int), 5000000, big.NewInt(1), []byte{}) + + privateKeyECDSA, err := ecdsa.GenerateKey(crypto.S256(), rand.Reader) + if err != nil { + t.Fatalf("err %v", err) + } + signer := types.NewEIP155Signer(big.NewInt(1)) + tx, err := types.SignTx(unsignedTx, signer, privateKeyECDSA) + if err != nil { + t.Fatalf("err %v", err) + } + /** + This comes from one of the test-vectors on the Skinny Create2 - EIP + + address 0x00000000000000000000000000000000deadbeef + salt 0x00000000000000000000000000000000000000000000000000000000cafebabe + init_code 0xdeadbeef + gas (assuming no mem expansion): 32006 + result: 0x60f3f640a8508fC6a86d45DF051962668E1e8AC7 + */ + origin, _ := signer.Sender(tx) + txContext := vm.TxContext{ + Origin: origin, + GasPrice: big.NewInt(1), + } + context := vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: common.Address{}, + BlockNumber: new(big.Int).SetUint64(8000000), + Time: new(big.Int).SetUint64(5), + Difficulty: big.NewInt(0x30000), + GasLimit: uint64(6000000), + BaseFee: new(big.Int).SetUint64(1), + } + alloc := core.GenesisAlloc{} + + // The code pushes 'deadbeef' into memory, then the other params, and calls CREATE2, then returns + // the address + alloc[common.HexToAddress("0x00000000000000000000000000000000deadbeef")] = core.GenesisAccount{ + Nonce: 1, + Code: hexutil.MustDecode("0x63deadbeef60005263cafebabe6004601c6000F560005260206000F3"), + Balance: big.NewInt(1), + } + alloc[origin] = core.GenesisAccount{ + Nonce: 1, + Code: []byte{}, + Balance: big.NewInt(500000000000000), + } + _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false) + + // Create the tracer, the EVM environment and run it + tracer, err := New("prestateTracer", new(Context)) + if err != nil { + t.Fatalf("failed to create call tracer: %v", err) + } + evm := vm.NewEVM(context, txContext, statedb, params.SubnetEVMDefaultChainConfig, vm.Config{Debug: true, Tracer: tracer}) + + msg, err := tx.AsMessage(signer, nil) + if err != nil { + t.Fatalf("failed to prepare transaction for tracing: %v", err) + } + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + if _, err = st.TransitionDb(); err != nil { + t.Fatalf("failed to execute transaction: %v", err) + } + // Retrieve the trace result and compare against the etalon + res, err := tracer.GetResult() + if err != nil { + t.Fatalf("failed to retrieve trace result: %v", err) + } + ret := make(map[string]interface{}) + if err := json.Unmarshal(res, &ret); err != nil { + t.Fatalf("failed to unmarshal trace result: %v", err) + } + if _, has := ret["0x60f3f640a8508fc6a86d45df051962668e1e8ac7"]; !has { + t.Fatalf("Expected 0x60f3f640a8508fc6a86d45df051962668e1e8ac7 in result") + } +} + +// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to +// comparison +func jsonEqual(x, y interface{}) bool { + xTrace := new(callTrace) + yTrace := new(callTrace) + if xj, err := json.Marshal(x); err == nil { + json.Unmarshal(xj, xTrace) + } else { + return false + } + if yj, err := json.Marshal(y); err == nil { + json.Unmarshal(yj, yTrace) + } else { + return false + } + return reflect.DeepEqual(xTrace, yTrace) +} + +func BenchmarkTransactionTrace(b *testing.B) { + key, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + from := crypto.PubkeyToAddress(key.PublicKey) + gas := uint64(1000000) // 1M gas + to := common.HexToAddress("0x00000000000000000000000000000000deadbeef") + signer := types.LatestSignerForChainID(big.NewInt(1337)) + tx, err := types.SignNewTx(key, signer, + &types.LegacyTx{ + Nonce: 1, + GasPrice: big.NewInt(500), + Gas: gas, + To: &to, + }) + if err != nil { + b.Fatal(err) + } + txContext := vm.TxContext{ + Origin: from, + GasPrice: tx.GasPrice(), + } + context := vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: common.Address{}, + BlockNumber: new(big.Int).SetUint64(uint64(5)), + Time: new(big.Int).SetUint64(uint64(5)), + Difficulty: big.NewInt(0xffffffff), + GasLimit: gas, + BaseFee: big.NewInt(8), + } + alloc := core.GenesisAlloc{} + // The code pushes 'deadbeef' into memory, then the other params, and calls CREATE2, then returns + // the address + loop := []byte{ + byte(vm.JUMPDEST), // [ count ] + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + alloc[common.HexToAddress("0x00000000000000000000000000000000deadbeef")] = core.GenesisAccount{ + Nonce: 1, + Code: loop, + Balance: big.NewInt(1), + } + alloc[from] = core.GenesisAccount{ + Nonce: 1, + Code: []byte{}, + Balance: big.NewInt(500000000000000), + } + _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false) + // Create the tracer, the EVM environment and run it + tracer := vm.NewStructLogger(&vm.LogConfig{ + Debug: false, + // DisableStorage: true, + // EnableMemory: false, + // EnableReturnData: false, + }) + evm := vm.NewEVM(context, txContext, statedb, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) + msg, err := tx.AsMessage(signer, nil) + if err != nil { + b.Fatalf("failed to prepare transaction for tracing: %v", err) + } + b.ResetTimer() + b.ReportAllocs() + + for i := 0; i < b.N; i++ { + snap := statedb.Snapshot() + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + _, err = st.TransitionDb() + if err != nil { + b.Fatal(err) + } + statedb.RevertToSnapshot(snap) + if have, want := len(tracer.StructLogs()), 244752; have != want { + b.Fatalf("trace wrong, want %d steps, have %d", want, have) + } + tracer.Reset() + } +} diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go new file mode 100644 index 0000000000..4018f3a605 --- /dev/null +++ b/ethclient/ethclient.go @@ -0,0 +1,562 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package ethclient provides a client for the Ethereum RPC API. +package ethclient + +import ( + "context" + "encoding/json" + "errors" + "fmt" + "math/big" + + "github.com/ava-labs/avalanchego/ids" + "github.com/ava-labs/subnet-evm/accounts/abi/bind" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +// Verify that Client implements required interfaces +var ( + _ bind.AcceptedContractCaller = (*Client)(nil) + _ bind.ContractBackend = (*Client)(nil) + _ bind.ContractFilterer = (*Client)(nil) + _ bind.ContractTransactor = (*Client)(nil) + _ bind.DeployBackend = (*Client)(nil) + + _ interfaces.ChainReader = (*Client)(nil) + _ interfaces.ChainStateReader = (*Client)(nil) + _ interfaces.TransactionReader = (*Client)(nil) + _ interfaces.TransactionSender = (*Client)(nil) + _ interfaces.ContractCaller = (*Client)(nil) + _ interfaces.GasEstimator = (*Client)(nil) + _ interfaces.GasPricer = (*Client)(nil) + _ interfaces.LogFilterer = (*Client)(nil) + _ interfaces.AcceptedStateReader = (*Client)(nil) + _ interfaces.AcceptedContractCaller = (*Client)(nil) +) + +// Client defines typed wrappers for the Ethereum RPC API. +type Client struct { + c *rpc.Client +} + +// Dial connects a client to the given URL. +func Dial(rawurl string) (*Client, error) { + return DialContext(context.Background(), rawurl) +} + +func DialContext(ctx context.Context, rawurl string) (*Client, error) { + c, err := rpc.DialContext(ctx, rawurl) + if err != nil { + return nil, err + } + return NewClient(c), nil +} + +// NewClient creates a client that uses the given RPC client. +func NewClient(c *rpc.Client) *Client { + return &Client{c} +} + +func (ec *Client) Close() { + ec.c.Close() +} + +// Blockchain Access + +// ChainID retrieves the current chain ID for transaction replay protection. +func (ec *Client) ChainID(ctx context.Context) (*big.Int, error) { + var result hexutil.Big + err := ec.c.CallContext(ctx, &result, "eth_chainId") + if err != nil { + return nil, err + } + return (*big.Int)(&result), err +} + +// BlockByHash returns the given full block. +// +// Note that loading full blocks requires two requests. Use HeaderByHash +// if you don't need all transactions or uncle headers. +func (ec *Client) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) { + return ec.getBlock(ctx, "eth_getBlockByHash", hash, true) +} + +// BlockByNumber returns a block from the current canonical chain. If number is nil, the +// latest known block is returned. +// +// Note that loading full blocks requires two requests. Use HeaderByNumber +// if you don't need all transactions or uncle headers. +func (ec *Client) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) { + return ec.getBlock(ctx, "eth_getBlockByNumber", ToBlockNumArg(number), true) +} + +// BlockNumber returns the most recent block number +func (ec *Client) BlockNumber(ctx context.Context) (uint64, error) { + var result hexutil.Uint64 + err := ec.c.CallContext(ctx, &result, "eth_blockNumber") + return uint64(result), err +} + +type rpcBlock struct { + Hash common.Hash `json:"hash"` + Transactions []rpcTransaction `json:"transactions"` + UncleHashes []common.Hash `json:"uncles"` + Version uint32 `json:"version"` + BlockExtraData *hexutil.Bytes `json:"blockExtraData"` +} + +func (ec *Client) getBlock(ctx context.Context, method string, args ...interface{}) (*types.Block, error) { + var raw json.RawMessage + err := ec.c.CallContext(ctx, &raw, method, args...) + if err != nil { + return nil, err + } else if len(raw) == 0 { + return nil, interfaces.NotFound + } + // Decode header and transactions. + var head *types.Header + var body rpcBlock + if err := json.Unmarshal(raw, &head); err != nil { + return nil, err + } + if err := json.Unmarshal(raw, &body); err != nil { + return nil, err + } + // Quick-verify transaction and uncle lists. This mostly helps with debugging the server. + if head.UncleHash == types.EmptyUncleHash && len(body.UncleHashes) > 0 { + return nil, fmt.Errorf("server returned non-empty uncle list but block header indicates no uncles") + } + if head.UncleHash != types.EmptyUncleHash && len(body.UncleHashes) == 0 { + return nil, fmt.Errorf("server returned empty uncle list but block header indicates uncles") + } + if head.TxHash == types.EmptyRootHash && len(body.Transactions) > 0 { + return nil, fmt.Errorf("server returned non-empty transaction list but block header indicates no transactions") + } + if head.TxHash != types.EmptyRootHash && len(body.Transactions) == 0 { + return nil, fmt.Errorf("server returned empty transaction list but block header indicates transactions") + } + // Load uncles because they are not included in the block response. + var uncles []*types.Header + if len(body.UncleHashes) > 0 { + uncles = make([]*types.Header, len(body.UncleHashes)) + reqs := make([]rpc.BatchElem, len(body.UncleHashes)) + for i := range reqs { + reqs[i] = rpc.BatchElem{ + Method: "eth_getUncleByBlockHashAndIndex", + Args: []interface{}{body.Hash, hexutil.EncodeUint64(uint64(i))}, + Result: &uncles[i], + } + } + if err := ec.c.BatchCallContext(ctx, reqs); err != nil { + return nil, err + } + for i := range reqs { + if reqs[i].Error != nil { + return nil, reqs[i].Error + } + if uncles[i] == nil { + return nil, fmt.Errorf("got null header for uncle %d of block %x", i, body.Hash[:]) + } + } + } + // Fill the sender cache of transactions in the block. + txs := make([]*types.Transaction, len(body.Transactions)) + for i, tx := range body.Transactions { + if tx.From != nil { + setSenderFromServer(tx.tx, *tx.From, body.Hash) + } + txs[i] = tx.tx + } + return types.NewBlockWithHeader(head).WithBody(txs, uncles), nil +} + +// HeaderByHash returns the block header with the given hash. +func (ec *Client) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) { + var head *types.Header + err := ec.c.CallContext(ctx, &head, "eth_getBlockByHash", hash, false) + if err == nil && head == nil { + err = interfaces.NotFound + } + return head, err +} + +// HeaderByNumber returns a block header from the current canonical chain. If number is +// nil, the latest known header is returned. +func (ec *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) { + var head *types.Header + err := ec.c.CallContext(ctx, &head, "eth_getBlockByNumber", ToBlockNumArg(number), false) + if err == nil && head == nil { + err = interfaces.NotFound + } + return head, err +} + +type rpcTransaction struct { + tx *types.Transaction + txExtraInfo +} + +type txExtraInfo struct { + BlockNumber *string `json:"blockNumber,omitempty"` + BlockHash *common.Hash `json:"blockHash,omitempty"` + From *common.Address `json:"from,omitempty"` +} + +func (tx *rpcTransaction) UnmarshalJSON(msg []byte) error { + if err := json.Unmarshal(msg, &tx.tx); err != nil { + return err + } + return json.Unmarshal(msg, &tx.txExtraInfo) +} + +// TransactionByHash returns the transaction with the given hash. +func (ec *Client) TransactionByHash(ctx context.Context, hash common.Hash) (tx *types.Transaction, isPending bool, err error) { + var json *rpcTransaction + err = ec.c.CallContext(ctx, &json, "eth_getTransactionByHash", hash) + if err != nil { + return nil, false, err + } else if json == nil { + return nil, false, interfaces.NotFound + } else if _, r, _ := json.tx.RawSignatureValues(); r == nil { + return nil, false, fmt.Errorf("server returned transaction without signature") + } + if json.From != nil && json.BlockHash != nil { + setSenderFromServer(json.tx, *json.From, *json.BlockHash) + } + return json.tx, json.BlockNumber == nil, nil +} + +// TransactionSender returns the sender address of the given transaction. The transaction +// must be known to the remote node and included in the blockchain at the given block and +// index. The sender is the one derived by the protocol at the time of inclusion. +// +// There is a fast-path for transactions retrieved by TransactionByHash and +// TransactionInBlock. Getting their sender address can be done without an RPC interaction. +func (ec *Client) TransactionSender(ctx context.Context, tx *types.Transaction, block common.Hash, index uint) (common.Address, error) { + // Try to load the address from the cache. + sender, err := types.Sender(&senderFromServer{blockhash: block}, tx) + if err == nil { + return sender, nil + } + var meta struct { + Hash common.Hash + From common.Address + } + if err = ec.c.CallContext(ctx, &meta, "eth_getTransactionByBlockHashAndIndex", block, hexutil.Uint64(index)); err != nil { + return common.Address{}, err + } + if meta.Hash == (common.Hash{}) || meta.Hash != tx.Hash() { + return common.Address{}, errors.New("wrong inclusion block/index") + } + return meta.From, nil +} + +// TransactionCount returns the total number of transactions in the given block. +func (ec *Client) TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error) { + var num hexutil.Uint + err := ec.c.CallContext(ctx, &num, "eth_getBlockTransactionCountByHash", blockHash) + return uint(num), err +} + +// TransactionInBlock returns a single transaction at index in the given block. +func (ec *Client) TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) { + var json *rpcTransaction + err := ec.c.CallContext(ctx, &json, "eth_getTransactionByBlockHashAndIndex", blockHash, hexutil.Uint64(index)) + if err != nil { + return nil, err + } + if json == nil { + return nil, interfaces.NotFound + } else if _, r, _ := json.tx.RawSignatureValues(); r == nil { + return nil, fmt.Errorf("server returned transaction without signature") + } + if json.From != nil && json.BlockHash != nil { + setSenderFromServer(json.tx, *json.From, *json.BlockHash) + } + return json.tx, err +} + +// TransactionReceipt returns the receipt of a transaction by transaction hash. +// Note that the receipt is not available for pending transactions. +func (ec *Client) TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) { + var r *types.Receipt + err := ec.c.CallContext(ctx, &r, "eth_getTransactionReceipt", txHash) + if err == nil { + if r == nil { + return nil, interfaces.NotFound + } + } + return r, err +} + +// SubscribeNewAcceptedTransactions subscribes to notifications about the accepted transaction hashes on the given channel. +func (ec *Client) SubscribeNewAcceptedTransactions(ctx context.Context, ch chan<- *common.Hash) (interfaces.Subscription, error) { + return ec.c.EthSubscribe(ctx, ch, "newAcceptedTransactions") +} + +// SubscribeNewAcceptedTransactions subscribes to notifications about the accepted transaction hashes on the given channel. +func (ec *Client) SubscribeNewPendingTransactions(ctx context.Context, ch chan<- *common.Hash) (interfaces.Subscription, error) { + return ec.c.EthSubscribe(ctx, ch, "newPendingTransactions") +} + +// SubscribeNewHead subscribes to notifications about the current blockchain head +// on the given channel. +func (ec *Client) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (interfaces.Subscription, error) { + return ec.c.EthSubscribe(ctx, ch, "newHeads") +} + +// State Access + +// NetworkID returns the network ID (also known as the chain ID) for this chain. +func (ec *Client) NetworkID(ctx context.Context) (*big.Int, error) { + version := new(big.Int) + var ver string + if err := ec.c.CallContext(ctx, &ver, "net_version"); err != nil { + return nil, err + } + if _, ok := version.SetString(ver, 10); !ok { + return nil, fmt.Errorf("invalid net_version result %q", ver) + } + return version, nil +} + +// BalanceAt returns the wei balance of the given account. +// The block number can be nil, in which case the balance is taken from the latest known block. +func (ec *Client) BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error) { + var result hexutil.Big + err := ec.c.CallContext(ctx, &result, "eth_getBalance", account, ToBlockNumArg(blockNumber)) + return (*big.Int)(&result), err +} + +// AssetBalanceAt returns the [assetID] balance of the given account +// The block number can be nil, in which case the balance is taken from the latest known block. +func (ec *Client) AssetBalanceAt(ctx context.Context, account common.Address, assetID ids.ID, blockNumber *big.Int) (*big.Int, error) { + var result hexutil.Big + err := ec.c.CallContext(ctx, &result, "eth_getAssetBalance", account, ToBlockNumArg(blockNumber), assetID) + return (*big.Int)(&result), err +} + +// StorageAt returns the value of key in the contract storage of the given account. +// The block number can be nil, in which case the value is taken from the latest known block. +func (ec *Client) StorageAt(ctx context.Context, account common.Address, key common.Hash, blockNumber *big.Int) ([]byte, error) { + var result hexutil.Bytes + err := ec.c.CallContext(ctx, &result, "eth_getStorageAt", account, key, ToBlockNumArg(blockNumber)) + return result, err +} + +// CodeAt returns the contract code of the given account. +// The block number can be nil, in which case the code is taken from the latest known block. +func (ec *Client) CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error) { + var result hexutil.Bytes + err := ec.c.CallContext(ctx, &result, "eth_getCode", account, ToBlockNumArg(blockNumber)) + return result, err +} + +// NonceAt returns the account nonce of the given account. +// The block number can be nil, in which case the nonce is taken from the latest known block. +func (ec *Client) NonceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (uint64, error) { + var result hexutil.Uint64 + err := ec.c.CallContext(ctx, &result, "eth_getTransactionCount", account, ToBlockNumArg(blockNumber)) + return uint64(result), err +} + +// Filters + +// FilterLogs executes a filter query. +func (ec *Client) FilterLogs(ctx context.Context, q interfaces.FilterQuery) ([]types.Log, error) { + var result []types.Log + arg, err := toFilterArg(q) + if err != nil { + return nil, err + } + err = ec.c.CallContext(ctx, &result, "eth_getLogs", arg) + return result, err +} + +// SubscribeFilterLogs subscribes to the results of a streaming filter query. +func (ec *Client) SubscribeFilterLogs(ctx context.Context, q interfaces.FilterQuery, ch chan<- types.Log) (interfaces.Subscription, error) { + arg, err := toFilterArg(q) + if err != nil { + return nil, err + } + return ec.c.EthSubscribe(ctx, ch, "logs", arg) +} + +func toFilterArg(q interfaces.FilterQuery) (interface{}, error) { + arg := map[string]interface{}{ + "address": q.Addresses, + "topics": q.Topics, + } + if q.BlockHash != nil { + arg["blockHash"] = *q.BlockHash + if q.FromBlock != nil || q.ToBlock != nil { + return nil, fmt.Errorf("cannot specify both BlockHash and FromBlock/ToBlock") + } + } else { + if q.FromBlock == nil { + arg["fromBlock"] = "0x0" + } else { + arg["fromBlock"] = ToBlockNumArg(q.FromBlock) + } + arg["toBlock"] = ToBlockNumArg(q.ToBlock) + } + return arg, nil +} + +// AcceptedCodeAt returns the contract code of the given account in the accepted state. +func (ec *Client) AcceptedCodeAt(ctx context.Context, account common.Address) ([]byte, error) { + return ec.CodeAt(ctx, account, nil) +} + +// AcceptedNonceAt returns the account nonce of the given account in the accepted state. +// This is the nonce that should be used for the next transaction. +func (ec *Client) AcceptedNonceAt(ctx context.Context, account common.Address) (uint64, error) { + return ec.NonceAt(ctx, account, nil) +} + +// AcceptedCallContract executes a message call transaction in the accepted +// state. +func (ec *Client) AcceptedCallContract(ctx context.Context, msg interfaces.CallMsg) ([]byte, error) { + return ec.CallContract(ctx, msg, nil) +} + +// Contract Calling + +// CallContract executes a message call transaction, which is directly executed in the VM +// of the node, but never mined into the blockchain. +// +// blockNumber selects the block height at which the call runs. It can be nil, in which +// case the code is taken from the latest known block. Note that state from very old +// blocks might not be available. +func (ec *Client) CallContract(ctx context.Context, msg interfaces.CallMsg, blockNumber *big.Int) ([]byte, error) { + var hex hexutil.Bytes + err := ec.c.CallContext(ctx, &hex, "eth_call", toCallArg(msg), ToBlockNumArg(blockNumber)) + if err != nil { + return nil, err + } + return hex, nil +} + +// SuggestGasPrice retrieves the currently suggested gas price to allow a timely +// execution of a transaction. +func (ec *Client) SuggestGasPrice(ctx context.Context) (*big.Int, error) { + var hex hexutil.Big + if err := ec.c.CallContext(ctx, &hex, "eth_gasPrice"); err != nil { + return nil, err + } + return (*big.Int)(&hex), nil +} + +// SuggestGasTipCap retrieves the currently suggested gas tip cap after 1559 to +// allow a timely execution of a transaction. +func (ec *Client) SuggestGasTipCap(ctx context.Context) (*big.Int, error) { + var hex hexutil.Big + if err := ec.c.CallContext(ctx, &hex, "eth_maxPriorityFeePerGas"); err != nil { + return nil, err + } + return (*big.Int)(&hex), nil +} + +// EstimateGas tries to estimate the gas needed to execute a specific transaction based on +// the current pending state of the backend blockchain. There is no guarantee that this is +// the true gas limit requirement as other transactions may be added or removed by miners, +// but it should provide a basis for setting a reasonable default. +func (ec *Client) EstimateGas(ctx context.Context, msg interfaces.CallMsg) (uint64, error) { + var hex hexutil.Uint64 + err := ec.c.CallContext(ctx, &hex, "eth_estimateGas", toCallArg(msg)) + if err != nil { + return 0, err + } + return uint64(hex), nil +} + +// EstimateBaseFee tries to estimate the base fee for the next block if it were created +// immediately. There is no guarantee that this will be the base fee used in the next block +// or that the next base fee will be higher or lower than the returned value. +func (ec *Client) EstimateBaseFee(ctx context.Context) (*big.Int, error) { + var hex hexutil.Big + err := ec.c.CallContext(ctx, &hex, "eth_baseFee") + if err != nil { + return nil, err + } + return (*big.Int)(&hex), nil +} + +// SendTransaction injects a signed transaction into the pending pool for execution. +// +// If the transaction was a contract creation use the TransactionReceipt method to get the +// contract address after the transaction has been mined. +func (ec *Client) SendTransaction(ctx context.Context, tx *types.Transaction) error { + data, err := tx.MarshalBinary() + if err != nil { + return err + } + return ec.c.CallContext(ctx, nil, "eth_sendRawTransaction", hexutil.Encode(data)) +} + +func ToBlockNumArg(number *big.Int) string { + // The Ethereum implementation uses a different mapping from + // negative numbers to special strings (latest, pending) then is + // used on its server side. See rpc/types.go for the comparison. + // In Subnet EVM, latest, pending, and accepted are all treated the same + // therefore, if [number] is nil or a negative number in [-3, -1] + // we want the latest accepted block + if number == nil { + return "latest" + } + low := big.NewInt(-3) + high := big.NewInt(-1) + if number.Cmp(low) >= 0 && number.Cmp(high) <= 0 { + return "latest" + } + return hexutil.EncodeBig(number) +} + +func toCallArg(msg interfaces.CallMsg) interface{} { + arg := map[string]interface{}{ + "from": msg.From, + "to": msg.To, + } + if len(msg.Data) > 0 { + arg["data"] = hexutil.Bytes(msg.Data) + } + if msg.Value != nil { + arg["value"] = (*hexutil.Big)(msg.Value) + } + if msg.Gas != 0 { + arg["gas"] = hexutil.Uint64(msg.Gas) + } + if msg.GasPrice != nil { + arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice) + } + return arg +} diff --git a/ethclient/signer.go b/ethclient/signer.go new file mode 100644 index 0000000000..913e166033 --- /dev/null +++ b/ethclient/signer.go @@ -0,0 +1,74 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethclient + +import ( + "errors" + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// senderFromServer is a types.Signer that remembers the sender address returned by the RPC +// server. It is stored in the transaction's sender address cache to avoid an additional +// request in TransactionSender. +type senderFromServer struct { + addr common.Address + blockhash common.Hash +} + +var errNotCached = errors.New("sender not cached") + +func setSenderFromServer(tx *types.Transaction, addr common.Address, block common.Hash) { + // Use types.Sender for side-effect to store our signer into the cache. + types.Sender(&senderFromServer{addr, block}, tx) +} + +func (s *senderFromServer) Equal(other types.Signer) bool { + os, ok := other.(*senderFromServer) + return ok && os.blockhash == s.blockhash +} + +func (s *senderFromServer) Sender(tx *types.Transaction) (common.Address, error) { + if s.blockhash == (common.Hash{}) { + return common.Address{}, errNotCached + } + return s.addr, nil +} + +func (s *senderFromServer) ChainID() *big.Int { + panic("can't sign with senderFromServer") +} + +func (s *senderFromServer) Hash(tx *types.Transaction) common.Hash { + panic("can't sign with senderFromServer") +} + +func (s *senderFromServer) SignatureValues(tx *types.Transaction, sig []byte) (R, S, V *big.Int, err error) { + panic("can't sign with senderFromServer") +} diff --git a/ethclient/subnetevmclient/subnet_evm_client.go b/ethclient/subnetevmclient/subnet_evm_client.go new file mode 100644 index 0000000000..46953f4bd9 --- /dev/null +++ b/ethclient/subnetevmclient/subnet_evm_client.go @@ -0,0 +1,219 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package subnetevmclient provides an RPC client for subnet-evm-specific APIs. +package subnetevmclient + +import ( + "context" + "math/big" + "runtime" + "runtime/debug" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/ethclient" + "github.com/ava-labs/subnet-evm/interfaces" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +// Client is a wrapper around rpc.Client that implements geth-specific functionality. +// +// If you want to use the standardized Ethereum RPC functionality, use ethclient.Client instead. +type Client struct { + c *rpc.Client +} + +// New creates a client that uses the given RPC client. +func New(c *rpc.Client) *Client { + return &Client{c} +} + +// CreateAccessList tries to create an access list for a specific transaction based on the +// current pending state of the blockchain. +func (ec *Client) CreateAccessList(ctx context.Context, msg interfaces.CallMsg) (*types.AccessList, uint64, string, error) { + type accessListResult struct { + Accesslist *types.AccessList `json:"accessList"` + Error string `json:"error,omitempty"` + GasUsed hexutil.Uint64 `json:"gasUsed"` + } + var result accessListResult + if err := ec.c.CallContext(ctx, &result, "eth_createAccessList", toCallArg(msg)); err != nil { + return nil, 0, "", err + } + return result.Accesslist, uint64(result.GasUsed), result.Error, nil +} + +// AccountResult is the result of a GetProof operation. +type AccountResult struct { + Address common.Address `json:"address"` + AccountProof []string `json:"accountProof"` + Balance *big.Int `json:"balance"` + CodeHash common.Hash `json:"codeHash"` + Nonce uint64 `json:"nonce"` + StorageHash common.Hash `json:"storageHash"` + StorageProof []StorageResult `json:"storageProof"` +} + +// StorageResult provides a proof for a key-value pair. +type StorageResult struct { + Key string `json:"key"` + Value *big.Int `json:"value"` + Proof []string `json:"proof"` +} + +// GetProof returns the account and storage values of the specified account including the Merkle-proof. +// The block number can be nil, in which case the value is taken from the latest known block. +func (ec *Client) GetProof(ctx context.Context, account common.Address, keys []string, blockNumber *big.Int) (*AccountResult, error) { + type storageResult struct { + Key string `json:"key"` + Value *hexutil.Big `json:"value"` + Proof []string `json:"proof"` + } + + type accountResult struct { + Address common.Address `json:"address"` + AccountProof []string `json:"accountProof"` + Balance *hexutil.Big `json:"balance"` + CodeHash common.Hash `json:"codeHash"` + Nonce hexutil.Uint64 `json:"nonce"` + StorageHash common.Hash `json:"storageHash"` + StorageProof []storageResult `json:"storageProof"` + } + + var res accountResult + err := ec.c.CallContext(ctx, &res, "eth_getProof", account, keys, ethclient.ToBlockNumArg(blockNumber)) + // Turn hexutils back to normal datatypes + storageResults := make([]StorageResult, 0, len(res.StorageProof)) + for _, st := range res.StorageProof { + storageResults = append(storageResults, StorageResult{ + Key: st.Key, + Value: st.Value.ToInt(), + Proof: st.Proof, + }) + } + result := AccountResult{ + Address: res.Address, + AccountProof: res.AccountProof, + Balance: res.Balance.ToInt(), + Nonce: uint64(res.Nonce), + CodeHash: res.CodeHash, + StorageHash: res.StorageHash, + } + return &result, err +} + +// OverrideAccount specifies the state of an account to be overridden. +type OverrideAccount struct { + Nonce uint64 `json:"nonce"` + Code []byte `json:"code"` + Balance *big.Int `json:"balance"` + State map[common.Hash]common.Hash `json:"state"` + StateDiff map[common.Hash]common.Hash `json:"stateDiff"` +} + +// CallContract executes a message call transaction, which is directly executed in the VM +// of the node, but never mined into the blockchain. +// +// blockNumber selects the block height at which the call runs. It can be nil, in which +// case the code is taken from the latest known block. Note that state from very old +// blocks might not be available. +// +// overrides specifies a map of contract states that should be overwritten before executing +// the message call. +// Please use ethclient.CallContract instead if you don't need the override functionality. +func (ec *Client) CallContract(ctx context.Context, msg interfaces.CallMsg, blockNumber *big.Int, overrides *map[common.Address]OverrideAccount) ([]byte, error) { + var hex hexutil.Bytes + err := ec.c.CallContext( + ctx, &hex, "eth_call", toCallArg(msg), + ethclient.ToBlockNumArg(blockNumber), toOverrideMap(overrides), + ) + return hex, err +} + +// GCStats retrieves the current garbage collection stats from a geth node. +func (ec *Client) GCStats(ctx context.Context) (*debug.GCStats, error) { + var result debug.GCStats + err := ec.c.CallContext(ctx, &result, "debug_gcStats") + return &result, err +} + +// MemStats retrieves the current memory stats from a geth node. +func (ec *Client) MemStats(ctx context.Context) (*runtime.MemStats, error) { + var result runtime.MemStats + err := ec.c.CallContext(ctx, &result, "debug_memStats") + return &result, err +} + +// SubscribePendingTransactions subscribes to new pending transactions. +func (ec *Client) SubscribePendingTransactions(ctx context.Context, ch chan<- common.Hash) (*rpc.ClientSubscription, error) { + return ec.c.EthSubscribe(ctx, ch, "newPendingTransactions") +} + +func toCallArg(msg interfaces.CallMsg) interface{} { + arg := map[string]interface{}{ + "from": msg.From, + "to": msg.To, + } + if len(msg.Data) > 0 { + arg["data"] = hexutil.Bytes(msg.Data) + } + if msg.Value != nil { + arg["value"] = (*hexutil.Big)(msg.Value) + } + if msg.Gas != 0 { + arg["gas"] = hexutil.Uint64(msg.Gas) + } + if msg.GasPrice != nil { + arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice) + } + return arg +} + +func toOverrideMap(overrides *map[common.Address]OverrideAccount) interface{} { + if overrides == nil { + return nil + } + type overrideAccount struct { + Nonce hexutil.Uint64 `json:"nonce"` + Code hexutil.Bytes `json:"code"` + Balance *hexutil.Big `json:"balance"` + State map[common.Hash]common.Hash `json:"state"` + StateDiff map[common.Hash]common.Hash `json:"stateDiff"` + } + result := make(map[common.Address]overrideAccount) + for addr, override := range *overrides { + result[addr] = overrideAccount{ + Nonce: hexutil.Uint64(override.Nonce), + Code: override.Code, + Balance: (*hexutil.Big)(override.Balance), + State: override.State, + StateDiff: override.StateDiff, + } + } + return &result +} diff --git a/ethdb/batch.go b/ethdb/batch.go new file mode 100644 index 0000000000..dda29529b0 --- /dev/null +++ b/ethdb/batch.go @@ -0,0 +1,81 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethdb + +// IdealBatchSize defines the size of the data batches should ideally add in one +// write. +const IdealBatchSize = 100 * 1024 + +// Batch is a write-only database that commits changes to its host database +// when Write is called. A batch cannot be used concurrently. +type Batch interface { + KeyValueWriter + + // ValueSize retrieves the amount of data queued up for writing. + ValueSize() int + + // Write flushes any accumulated data to disk. + Write() error + + // Reset resets the batch for reuse. + Reset() + + // Replay replays the batch contents. + Replay(w KeyValueWriter) error +} + +// Batcher wraps the NewBatch method of a backing data store. +type Batcher interface { + // NewBatch creates a write-only database that buffers changes to its host db + // until a final write is called. + NewBatch() Batch +} + +// HookedBatch wraps an arbitrary batch where each operation may be hooked into +// to monitor from black box code. +type HookedBatch struct { + Batch + + OnPut func(key []byte, value []byte) // Callback if a key is inserted + OnDelete func(key []byte) // Callback if a key is deleted +} + +// Put inserts the given value into the key-value data store. +func (b HookedBatch) Put(key []byte, value []byte) error { + if b.OnPut != nil { + b.OnPut(key, value) + } + return b.Batch.Put(key, value) +} + +// Delete removes the key from the key-value data store. +func (b HookedBatch) Delete(key []byte) error { + if b.OnDelete != nil { + b.OnDelete(key) + } + return b.Batch.Delete(key) +} diff --git a/ethdb/database.go b/ethdb/database.go new file mode 100644 index 0000000000..2cdac31c06 --- /dev/null +++ b/ethdb/database.go @@ -0,0 +1,100 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package ethdb defines the interfaces for an Ethereum data store. +package ethdb + +import "io" + +// KeyValueReader wraps the Has and Get method of a backing data store. +type KeyValueReader interface { + // Has retrieves if a key is present in the key-value data store. + Has(key []byte) (bool, error) + + // Get retrieves the given key if it's present in the key-value data store. + Get(key []byte) ([]byte, error) +} + +// KeyValueWriter wraps the Put method of a backing data store. +type KeyValueWriter interface { + // Put inserts the given value into the key-value data store. + Put(key []byte, value []byte) error + + // Delete removes the key from the key-value data store. + Delete(key []byte) error +} + +// Stater wraps the Stat method of a backing data store. +type Stater interface { + // Stat returns a particular internal stat of the database. + Stat(property string) (string, error) +} + +// Compacter wraps the Compact method of a backing data store. +type Compacter interface { + // Compact flattens the underlying data store for the given key range. In essence, + // deleted and overwritten versions are discarded, and the data is rearranged to + // reduce the cost of operations needed to access them. + // + // A nil start is treated as a key before all keys in the data store; a nil limit + // is treated as a key after all keys in the data store. If both is nil then it + // will compact entire data store. + Compact(start []byte, limit []byte) error +} + +// KeyValueStore contains all the methods required to allow handling different +// key-value data stores backing the high level database. +type KeyValueStore interface { + KeyValueReader + KeyValueWriter + Batcher + Iteratee + Stater + Compacter + io.Closer +} + +// Reader contains the methods required to read data from key-value storage. +type Reader interface { + KeyValueReader +} + +// Writer contains the methods required to write data to key-value storage. +type Writer interface { + KeyValueWriter +} + +// Database contains all the methods required by the high level database to not +// only access the key-value data store but also the chain freezer. +type Database interface { + Reader + Writer + Batcher + Iteratee + Stater + Compacter + io.Closer +} diff --git a/ethdb/dbtest/testsuite.go b/ethdb/dbtest/testsuite.go new file mode 100644 index 0000000000..860fa27037 --- /dev/null +++ b/ethdb/dbtest/testsuite.go @@ -0,0 +1,335 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package dbtest + +import ( + "bytes" + "reflect" + "sort" + "testing" + + "github.com/ava-labs/subnet-evm/ethdb" +) + +// TestDatabaseSuite runs a suite of tests against a KeyValueStore database +// implementation. +func TestDatabaseSuite(t *testing.T, New func() ethdb.KeyValueStore) { + t.Run("Iterator", func(t *testing.T) { + tests := []struct { + content map[string]string + prefix string + start string + order []string + }{ + // Empty databases should be iterable + {map[string]string{}, "", "", nil}, + {map[string]string{}, "non-existent-prefix", "", nil}, + + // Single-item databases should be iterable + {map[string]string{"key": "val"}, "", "", []string{"key"}}, + {map[string]string{"key": "val"}, "k", "", []string{"key"}}, + {map[string]string{"key": "val"}, "l", "", nil}, + + // Multi-item databases should be fully iterable + { + map[string]string{"k1": "v1", "k5": "v5", "k2": "v2", "k4": "v4", "k3": "v3"}, + "", "", + []string{"k1", "k2", "k3", "k4", "k5"}, + }, + { + map[string]string{"k1": "v1", "k5": "v5", "k2": "v2", "k4": "v4", "k3": "v3"}, + "k", "", + []string{"k1", "k2", "k3", "k4", "k5"}, + }, + { + map[string]string{"k1": "v1", "k5": "v5", "k2": "v2", "k4": "v4", "k3": "v3"}, + "l", "", + nil, + }, + // Multi-item databases should be prefix-iterable + { + map[string]string{ + "ka1": "va1", "ka5": "va5", "ka2": "va2", "ka4": "va4", "ka3": "va3", + "kb1": "vb1", "kb5": "vb5", "kb2": "vb2", "kb4": "vb4", "kb3": "vb3", + }, + "ka", "", + []string{"ka1", "ka2", "ka3", "ka4", "ka5"}, + }, + { + map[string]string{ + "ka1": "va1", "ka5": "va5", "ka2": "va2", "ka4": "va4", "ka3": "va3", + "kb1": "vb1", "kb5": "vb5", "kb2": "vb2", "kb4": "vb4", "kb3": "vb3", + }, + "kc", "", + nil, + }, + // Multi-item databases should be prefix-iterable with start position + { + map[string]string{ + "ka1": "va1", "ka5": "va5", "ka2": "va2", "ka4": "va4", "ka3": "va3", + "kb1": "vb1", "kb5": "vb5", "kb2": "vb2", "kb4": "vb4", "kb3": "vb3", + }, + "ka", "3", + []string{"ka3", "ka4", "ka5"}, + }, + { + map[string]string{ + "ka1": "va1", "ka5": "va5", "ka2": "va2", "ka4": "va4", "ka3": "va3", + "kb1": "vb1", "kb5": "vb5", "kb2": "vb2", "kb4": "vb4", "kb3": "vb3", + }, + "ka", "8", + nil, + }, + } + for i, tt := range tests { + // Create the key-value data store + db := New() + for key, val := range tt.content { + if err := db.Put([]byte(key), []byte(val)); err != nil { + t.Fatalf("test %d: failed to insert item %s:%s into database: %v", i, key, val, err) + } + } + // Iterate over the database with the given configs and verify the results + it, idx := db.NewIterator([]byte(tt.prefix), []byte(tt.start)), 0 + for it.Next() { + if len(tt.order) <= idx { + t.Errorf("test %d: prefix=%q more items than expected: checking idx=%d (key %q), expecting len=%d", i, tt.prefix, idx, it.Key(), len(tt.order)) + break + } + if !bytes.Equal(it.Key(), []byte(tt.order[idx])) { + t.Errorf("test %d: item %d: key mismatch: have %s, want %s", i, idx, string(it.Key()), tt.order[idx]) + } + if !bytes.Equal(it.Value(), []byte(tt.content[tt.order[idx]])) { + t.Errorf("test %d: item %d: value mismatch: have %s, want %s", i, idx, string(it.Value()), tt.content[tt.order[idx]]) + } + idx++ + } + if err := it.Error(); err != nil { + t.Errorf("test %d: iteration failed: %v", i, err) + } + if idx != len(tt.order) { + t.Errorf("test %d: iteration terminated prematurely: have %d, want %d", i, idx, len(tt.order)) + } + db.Close() + } + }) + + t.Run("IteratorWith", func(t *testing.T) { + db := New() + defer db.Close() + + keys := []string{"1", "2", "3", "4", "6", "10", "11", "12", "20", "21", "22"} + sort.Strings(keys) // 1, 10, 11, etc + + for _, k := range keys { + if err := db.Put([]byte(k), nil); err != nil { + t.Fatal(err) + } + } + + { + it := db.NewIterator(nil, nil) + got, want := iterateKeys(it), keys + if err := it.Error(); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(got, want) { + t.Errorf("Iterator: got: %s; want: %s", got, want) + } + } + + { + it := db.NewIterator([]byte("1"), nil) + got, want := iterateKeys(it), []string{"1", "10", "11", "12"} + if err := it.Error(); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(got, want) { + t.Errorf("IteratorWith(1,nil): got: %s; want: %s", got, want) + } + } + + { + it := db.NewIterator([]byte("5"), nil) + got, want := iterateKeys(it), []string{} + if err := it.Error(); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(got, want) { + t.Errorf("IteratorWith(5,nil): got: %s; want: %s", got, want) + } + } + + { + it := db.NewIterator(nil, []byte("2")) + got, want := iterateKeys(it), []string{"2", "20", "21", "22", "3", "4", "6"} + if err := it.Error(); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(got, want) { + t.Errorf("IteratorWith(nil,2): got: %s; want: %s", got, want) + } + } + + { + it := db.NewIterator(nil, []byte("5")) + got, want := iterateKeys(it), []string{"6"} + if err := it.Error(); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(got, want) { + t.Errorf("IteratorWith(nil,5): got: %s; want: %s", got, want) + } + } + }) + + t.Run("KeyValueOperations", func(t *testing.T) { + db := New() + defer db.Close() + + key := []byte("foo") + + if got, err := db.Has(key); err != nil { + t.Error(err) + } else if got { + t.Errorf("wrong value: %t", got) + } + + value := []byte("hello world") + if err := db.Put(key, value); err != nil { + t.Error(err) + } + + if got, err := db.Has(key); err != nil { + t.Error(err) + } else if !got { + t.Errorf("wrong value: %t", got) + } + + if got, err := db.Get(key); err != nil { + t.Error(err) + } else if !bytes.Equal(got, value) { + t.Errorf("wrong value: %q", got) + } + + if err := db.Delete(key); err != nil { + t.Error(err) + } + + if got, err := db.Has(key); err != nil { + t.Error(err) + } else if got { + t.Errorf("wrong value: %t", got) + } + }) + + t.Run("Batch", func(t *testing.T) { + db := New() + defer db.Close() + + b := db.NewBatch() + for _, k := range []string{"1", "2", "3", "4"} { + if err := b.Put([]byte(k), nil); err != nil { + t.Fatal(err) + } + } + + if has, err := db.Has([]byte("1")); err != nil { + t.Fatal(err) + } else if has { + t.Error("db contains element before batch write") + } + + if err := b.Write(); err != nil { + t.Fatal(err) + } + + { + it := db.NewIterator(nil, nil) + if got, want := iterateKeys(it), []string{"1", "2", "3", "4"}; !reflect.DeepEqual(got, want) { + t.Errorf("got: %s; want: %s", got, want) + } + } + + b.Reset() + + // Mix writes and deletes in batch + b.Put([]byte("5"), nil) + b.Delete([]byte("1")) + b.Put([]byte("6"), nil) + b.Delete([]byte("3")) + b.Put([]byte("3"), nil) + + if err := b.Write(); err != nil { + t.Fatal(err) + } + + { + it := db.NewIterator(nil, nil) + if got, want := iterateKeys(it), []string{"2", "3", "4", "5", "6"}; !reflect.DeepEqual(got, want) { + t.Errorf("got: %s; want: %s", got, want) + } + } + }) + + t.Run("BatchReplay", func(t *testing.T) { + db := New() + defer db.Close() + + want := []string{"1", "2", "3", "4"} + b := db.NewBatch() + for _, k := range want { + if err := b.Put([]byte(k), nil); err != nil { + t.Fatal(err) + } + } + + b2 := db.NewBatch() + if err := b.Replay(b2); err != nil { + t.Fatal(err) + } + + if err := b2.Replay(db); err != nil { + t.Fatal(err) + } + + it := db.NewIterator(nil, nil) + if got := iterateKeys(it); !reflect.DeepEqual(got, want) { + t.Errorf("got: %s; want: %s", got, want) + } + }) +} + +func iterateKeys(it ethdb.Iterator) []string { + keys := []string{} + for it.Next() { + keys = append(keys, string(it.Key())) + } + sort.Strings(keys) + it.Release() + return keys +} diff --git a/ethdb/iterator.go b/ethdb/iterator.go new file mode 100644 index 0000000000..54b10838b6 --- /dev/null +++ b/ethdb/iterator.go @@ -0,0 +1,71 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethdb + +// Iterator iterates over a database's key/value pairs in ascending key order. +// +// When it encounters an error any seek will return false and will yield no key/ +// value pairs. The error can be queried by calling the Error method. Calling +// Release is still necessary. +// +// An iterator must be released after use, but it is not necessary to read an +// iterator until exhaustion. An iterator is not safe for concurrent use, but it +// is safe to use multiple iterators concurrently. +type Iterator interface { + // Next moves the iterator to the next key/value pair. It returns whether the + // iterator is exhausted. + Next() bool + + // Error returns any accumulated error. Exhausting all the key/value pairs + // is not considered to be an error. + Error() error + + // Key returns the key of the current key/value pair, or nil if done. The caller + // should not modify the contents of the returned slice, and its contents may + // change on the next call to Next. + Key() []byte + + // Value returns the value of the current key/value pair, or nil if done. The + // caller should not modify the contents of the returned slice, and its contents + // may change on the next call to Next. + Value() []byte + + // Release releases associated resources. Release should always succeed and can + // be called multiple times without causing error. + Release() +} + +// Iteratee wraps the NewIterator methods of a backing data store. +type Iteratee interface { + // NewIterator creates a binary-alphabetical iterator over a subset + // of database content with a particular key prefix, starting at a particular + // initial key (or after, if it does not exist). + // + // Note: This method assumes that the prefix is NOT part of the start, so there's + // no need for the caller to prepend the prefix to the start + NewIterator(prefix []byte, start []byte) Iterator +} diff --git a/ethdb/memorydb/memorydb.go b/ethdb/memorydb/memorydb.go new file mode 100644 index 0000000000..5eb23aea51 --- /dev/null +++ b/ethdb/memorydb/memorydb.go @@ -0,0 +1,325 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package memorydb implements the key-value database layer based on memory maps. +package memorydb + +import ( + "errors" + "sort" + "strings" + "sync" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" +) + +var ( + // errMemorydbClosed is returned if a memory database was already closed at the + // invocation of a data access operation. + errMemorydbClosed = errors.New("database closed") + + // errMemorydbNotFound is returned if a key is requested that is not found in + // the provided memory database. + errMemorydbNotFound = errors.New("not found") +) + +// Database is an ephemeral key-value store. Apart from basic data storage +// functionality it also supports batch writes and iterating over the keyspace in +// binary-alphabetical order. +type Database struct { + db map[string][]byte + lock sync.RWMutex +} + +// New returns a wrapped map with all the required database interface methods +// implemented. +func New() *Database { + return &Database{ + db: make(map[string][]byte), + } +} + +// NewWithCap returns a wrapped map pre-allocated to the provided capcity with +// all the required database interface methods implemented. +func NewWithCap(size int) *Database { + return &Database{ + db: make(map[string][]byte, size), + } +} + +// Close deallocates the internal map and ensures any consecutive data access op +// failes with an error. +func (db *Database) Close() error { + db.lock.Lock() + defer db.lock.Unlock() + + db.db = nil + return nil +} + +// Has retrieves if a key is present in the key-value store. +func (db *Database) Has(key []byte) (bool, error) { + db.lock.RLock() + defer db.lock.RUnlock() + + if db.db == nil { + return false, errMemorydbClosed + } + _, ok := db.db[string(key)] + return ok, nil +} + +// Get retrieves the given key if it's present in the key-value store. +func (db *Database) Get(key []byte) ([]byte, error) { + db.lock.RLock() + defer db.lock.RUnlock() + + if db.db == nil { + return nil, errMemorydbClosed + } + if entry, ok := db.db[string(key)]; ok { + return common.CopyBytes(entry), nil + } + return nil, errMemorydbNotFound +} + +// Put inserts the given value into the key-value store. +func (db *Database) Put(key []byte, value []byte) error { + db.lock.Lock() + defer db.lock.Unlock() + + if db.db == nil { + return errMemorydbClosed + } + db.db[string(key)] = common.CopyBytes(value) + return nil +} + +// Delete removes the key from the key-value store. +func (db *Database) Delete(key []byte) error { + db.lock.Lock() + defer db.lock.Unlock() + + if db.db == nil { + return errMemorydbClosed + } + delete(db.db, string(key)) + return nil +} + +// NewBatch creates a write-only key-value store that buffers changes to its host +// database until a final write is called. +func (db *Database) NewBatch() ethdb.Batch { + return &batch{ + db: db, + } +} + +// NewIterator creates a binary-alphabetical iterator over a subset +// of database content with a particular key prefix, starting at a particular +// initial key (or after, if it does not exist). +func (db *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator { + db.lock.RLock() + defer db.lock.RUnlock() + + var ( + pr = string(prefix) + st = string(append(prefix, start...)) + keys = make([]string, 0, len(db.db)) + values = make([][]byte, 0, len(db.db)) + ) + // Collect the keys from the memory database corresponding to the given prefix + // and start + for key := range db.db { + if !strings.HasPrefix(key, pr) { + continue + } + if key >= st { + keys = append(keys, key) + } + } + // Sort the items and retrieve the associated values + sort.Strings(keys) + for _, key := range keys { + values = append(values, db.db[key]) + } + return &iterator{ + keys: keys, + values: values, + } +} + +// Stat returns a particular internal stat of the database. +func (db *Database) Stat(property string) (string, error) { + return "", errors.New("unknown property") +} + +// Compact is not supported on a memory database, but there's no need either as +// a memory database doesn't waste space anyway. +func (db *Database) Compact(start []byte, limit []byte) error { + return nil +} + +// Len returns the number of entries currently present in the memory database. +// +// Note, this method is only used for testing (i.e. not public in general) and +// does not have explicit checks for closed-ness to allow simpler testing code. +func (db *Database) Len() int { + db.lock.RLock() + defer db.lock.RUnlock() + + return len(db.db) +} + +// keyvalue is a key-value tuple tagged with a deletion field to allow creating +// memory-database write batches. +type keyvalue struct { + key []byte + value []byte + delete bool +} + +// batch is a write-only memory batch that commits changes to its host +// database when Write is called. A batch cannot be used concurrently. +type batch struct { + db *Database + writes []keyvalue + size int +} + +// Put inserts the given value into the batch for later committing. +func (b *batch) Put(key, value []byte) error { + b.writes = append(b.writes, keyvalue{common.CopyBytes(key), common.CopyBytes(value), false}) + b.size += len(value) + return nil +} + +// Delete inserts the a key removal into the batch for later committing. +func (b *batch) Delete(key []byte) error { + b.writes = append(b.writes, keyvalue{common.CopyBytes(key), nil, true}) + b.size += len(key) + return nil +} + +// ValueSize retrieves the amount of data queued up for writing. +func (b *batch) ValueSize() int { + return b.size +} + +// Write flushes any accumulated data to the memory database. +func (b *batch) Write() error { + b.db.lock.Lock() + defer b.db.lock.Unlock() + + for _, keyvalue := range b.writes { + if keyvalue.delete { + delete(b.db.db, string(keyvalue.key)) + continue + } + b.db.db[string(keyvalue.key)] = keyvalue.value + } + return nil +} + +// Reset resets the batch for reuse. +func (b *batch) Reset() { + b.writes = b.writes[:0] + b.size = 0 +} + +// Replay replays the batch contents. +func (b *batch) Replay(w ethdb.KeyValueWriter) error { + for _, keyvalue := range b.writes { + if keyvalue.delete { + if err := w.Delete(keyvalue.key); err != nil { + return err + } + continue + } + if err := w.Put(keyvalue.key, keyvalue.value); err != nil { + return err + } + } + return nil +} + +// iterator can walk over the (potentially partial) keyspace of a memory key +// value store. Internally it is a deep copy of the entire iterated state, +// sorted by keys. +type iterator struct { + inited bool + keys []string + values [][]byte +} + +// Next moves the iterator to the next key/value pair. It returns whether the +// iterator is exhausted. +func (it *iterator) Next() bool { + // If the iterator was not yet initialized, do it now + if !it.inited { + it.inited = true + return len(it.keys) > 0 + } + // Iterator already initialize, advance it + if len(it.keys) > 0 { + it.keys = it.keys[1:] + it.values = it.values[1:] + } + return len(it.keys) > 0 +} + +// Error returns any accumulated error. Exhausting all the key/value pairs +// is not considered to be an error. A memory iterator cannot encounter errors. +func (it *iterator) Error() error { + return nil +} + +// Key returns the key of the current key/value pair, or nil if done. The caller +// should not modify the contents of the returned slice, and its contents may +// change on the next call to Next. +func (it *iterator) Key() []byte { + if len(it.keys) > 0 { + return []byte(it.keys[0]) + } + return nil +} + +// Value returns the value of the current key/value pair, or nil if done. The +// caller should not modify the contents of the returned slice, and its contents +// may change on the next call to Next. +func (it *iterator) Value() []byte { + if len(it.values) > 0 { + return it.values[0] + } + return nil +} + +// Release releases associated resources. Release should always succeed and can +// be called multiple times without causing error. +func (it *iterator) Release() { + it.keys, it.values = nil, nil +} diff --git a/ethdb/memorydb/memorydb_test.go b/ethdb/memorydb/memorydb_test.go new file mode 100644 index 0000000000..971328920a --- /dev/null +++ b/ethdb/memorydb/memorydb_test.go @@ -0,0 +1,42 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package memorydb + +import ( + "testing" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/ethdb/dbtest" +) + +func TestMemoryDB(t *testing.T) { + t.Run("DatabaseSuite", func(t *testing.T) { + dbtest.TestDatabaseSuite(t, func() ethdb.KeyValueStore { + return New() + }) + }) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000000..57527b48aa --- /dev/null +++ b/go.mod @@ -0,0 +1,41 @@ +module github.com/ava-labs/subnet-evm + +go 1.16 + +require ( + github.com/VictoriaMetrics/fastcache v1.6.0 + github.com/ava-labs/avalanchego v1.7.1 + github.com/btcsuite/btcd v0.21.0-beta // indirect + github.com/cespare/cp v0.1.0 + github.com/davecgh/go-spew v1.1.1 + github.com/deckarep/golang-set v1.7.1 + github.com/ethereum/go-ethereum v1.10.12 + github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5 + github.com/gballet/go-libpcsclite v0.0.0-20191108122812-4678299bea08 + github.com/google/uuid v1.1.5 + github.com/gorilla/rpc v1.2.0 + github.com/gorilla/websocket v1.4.2 + github.com/hashicorp/go-bexpr v0.1.10 + github.com/hashicorp/go-plugin v1.3.0 + github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d + github.com/holiman/bloomfilter/v2 v2.0.3 + github.com/holiman/uint256 v1.2.0 + github.com/mattn/go-colorable v0.1.8 + github.com/mattn/go-isatty v0.0.12 + github.com/olekukonko/tablewriter v0.0.5 + github.com/prometheus/client_golang v1.7.1 + github.com/prometheus/client_model v0.2.0 + github.com/prometheus/tsdb v0.10.0 // indirect + github.com/rjeczalik/notify v0.9.2 + github.com/spf13/cast v1.3.1 + github.com/spf13/pflag v1.0.5 + github.com/spf13/viper v1.7.1 + github.com/status-im/keycard-go v0.0.0-20200402102358-957c09536969 + github.com/stretchr/testify v1.7.0 + github.com/tyler-smith/go-bip39 v1.0.2 + golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2 + golang.org/x/text v0.3.6 + golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac + gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6 + gopkg.in/urfave/cli.v1 v1.20.0 +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000000..55da54c0f2 --- /dev/null +++ b/go.sum @@ -0,0 +1,880 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.43.0/go.mod h1:BOSR3VbTLkk6FDC/TcffxP4NF/FFBGA5ku+jvKOP7pg= +cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= +cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= +cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= +cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= +cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= +cloud.google.com/go v0.51.0/go.mod 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h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4= diff --git a/interfaces/interfaces.go b/interfaces/interfaces.go new file mode 100644 index 0000000000..c0e91df422 --- /dev/null +++ b/interfaces/interfaces.go @@ -0,0 +1,203 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package ethereum defines interfaces for interacting with Ethereum. +package interfaces + +import ( + "context" + "errors" + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" +) + +// NotFound is returned by API methods if the requested item does not exist. +var NotFound = errors.New("not found") + +// TODO: move subscription to package event + +// Subscription represents an event subscription where events are +// delivered on a data channel. +type Subscription interface { + // Unsubscribe cancels the sending of events to the data channel + // and closes the error channel. + Unsubscribe() + // Err returns the subscription error channel. The error channel receives + // a value if there is an issue with the subscription (e.g. the network connection + // delivering the events has been closed). Only one value will ever be sent. + // The error channel is closed by Unsubscribe. + Err() <-chan error +} + +// ChainReader provides access to the blockchain. The methods in this interface access raw +// data from either the canonical chain (when requesting by block number) or any +// blockchain fork that was previously downloaded and processed by the node. The block +// number argument can be nil to select the latest canonical block. Reading block headers +// should be preferred over full blocks whenever possible. +// +// The returned error is NotFound if the requested item does not exist. +type ChainReader interface { + BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) + BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) + HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) + HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) + TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error) + TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) + + // This method subscribes to notifications about changes of the head block of + // the canonical chain. + SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (Subscription, error) +} + +// TransactionReader provides access to past transactions and their receipts. +// Implementations may impose arbitrary restrictions on the transactions and receipts that +// can be retrieved. Historic transactions may not be available. +// +// Avoid relying on this interface if possible. Contract logs (through the LogFilterer +// interface) are more reliable and usually safer in the presence of chain +// reorganisations. +// +// The returned error is NotFound if the requested item does not exist. +type TransactionReader interface { + // TransactionByHash checks the pool of pending transactions in addition to the + // blockchain. The isPending return value indicates whether the transaction has been + // mined yet. Note that the transaction may not be part of the canonical chain even if + // it's not pending. + TransactionByHash(ctx context.Context, txHash common.Hash) (tx *types.Transaction, isPending bool, err error) + // TransactionReceipt returns the receipt of a mined transaction. Note that the + // transaction may not be included in the current canonical chain even if a receipt + // exists. + TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) +} + +// ChainStateReader wraps access to the state trie of the canonical blockchain. Note that +// implementations of the interface may be unable to return state values for old blocks. +// In many cases, using CallContract can be preferable to reading raw contract storage. +type ChainStateReader interface { + BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error) + StorageAt(ctx context.Context, account common.Address, key common.Hash, blockNumber *big.Int) ([]byte, error) + CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error) + NonceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (uint64, error) +} + +// CallMsg contains parameters for contract calls. +type CallMsg struct { + From common.Address // the sender of the 'transaction' + To *common.Address // the destination contract (nil for contract creation) + Gas uint64 // if 0, the call executes with near-infinite gas + GasPrice *big.Int // wei <-> gas exchange ratio + GasFeeCap *big.Int // EIP-1559 fee cap per gas. + GasTipCap *big.Int // EIP-1559 tip per gas. + Value *big.Int // amount of wei sent along with the call + Data []byte // input data, usually an ABI-encoded contract method invocation + + AccessList types.AccessList // EIP-2930 access list. +} + +// A ContractCaller provides contract calls, essentially transactions that are executed by +// the EVM but not mined into the blockchain. ContractCall is a low-level method to +// execute such calls. For applications which are structured around specific contracts, +// the abigen tool provides a nicer, properly typed way to perform calls. +type ContractCaller interface { + CallContract(ctx context.Context, call CallMsg, blockNumber *big.Int) ([]byte, error) +} + +// FilterQuery contains options for contract log filtering. +type FilterQuery struct { + BlockHash *common.Hash // used by eth_getLogs, return logs only from block with this hash + FromBlock *big.Int // beginning of the queried range, nil means genesis block + ToBlock *big.Int // end of the range, nil means latest block + Addresses []common.Address // restricts matches to events created by specific contracts + + // The Topic list restricts matches to particular event topics. Each event has a list + // of topics. Topics matches a prefix of that list. An empty element slice matches any + // topic. Non-empty elements represent an alternative that matches any of the + // contained topics. + // + // Examples: + // {} or nil matches any topic list + // {{A}} matches topic A in first position + // {{}, {B}} matches any topic in first position AND B in second position + // {{A}, {B}} matches topic A in first position AND B in second position + // {{A, B}, {C, D}} matches topic (A OR B) in first position AND (C OR D) in second position + Topics [][]common.Hash +} + +// LogFilterer provides access to contract log events using a one-off query or continuous +// event subscription. +// +// Logs received through a streaming query subscription may have Removed set to true, +// indicating that the log was reverted due to a chain reorganisation. +type LogFilterer interface { + FilterLogs(ctx context.Context, q FilterQuery) ([]types.Log, error) + SubscribeFilterLogs(ctx context.Context, q FilterQuery, ch chan<- types.Log) (Subscription, error) +} + +// TransactionSender wraps transaction sending. The SendTransaction method injects a +// signed transaction into the pending transaction pool for execution. If the transaction +// was a contract creation, the TransactionReceipt method can be used to retrieve the +// contract address after the transaction has been mined. +// +// The transaction must be signed and have a valid nonce to be included. Consumers of the +// API can use package accounts to maintain local private keys and need can retrieve the +// next available nonce using AcceptedNonceAt. +type TransactionSender interface { + SendTransaction(ctx context.Context, tx *types.Transaction) error +} + +// GasPricer wraps the gas price oracle, which monitors the blockchain to determine the +// optimal gas price given current fee market conditions. +type GasPricer interface { + SuggestGasPrice(ctx context.Context) (*big.Int, error) +} + +// An AcceptedStateReceiver provides access to the accepted state ie. the state of the +// most recently accepted block. +type AcceptedStateReader interface { + AcceptedCodeAt(ctx context.Context, account common.Address) ([]byte, error) + AcceptedNonceAt(ctx context.Context, account common.Address) (uint64, error) +} + +// AcceptedContractCaller can be used to perform calls against the accepted state. +type AcceptedContractCaller interface { + AcceptedCallContract(ctx context.Context, call CallMsg) ([]byte, error) +} + +// GasEstimator wraps EstimateGas, which tries to estimate the gas needed to execute a +// specific transaction based on the pending state. There is no guarantee that this is the +// true gas limit requirement as other transactions may be added or removed by miners, but +// it should provide a basis for setting a reasonable default. +type GasEstimator interface { + EstimateGas(ctx context.Context, call CallMsg) (uint64, error) +} + +// A PendingStateEventer provides access to real time notifications about changes to the +// pending state. +type PendingStateEventer interface { + SubscribePendingTransactions(ctx context.Context, ch chan<- *types.Transaction) (Subscription, error) +} diff --git a/internal/debug/api.go b/internal/debug/api.go new file mode 100644 index 0000000000..9230959287 --- /dev/null +++ b/internal/debug/api.go @@ -0,0 +1,282 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package debug interfaces Go runtime debugging facilities. +// This package is mostly glue code making these facilities available +// through the CLI and RPC subsystem. If you want to use them from Go code, +// use package runtime instead. +package debug + +import ( + "bytes" + "errors" + "io" + "os" + "os/user" + "path/filepath" + "regexp" + "runtime" + "runtime/debug" + "runtime/pprof" + "strings" + "sync" + "time" + + "github.com/ethereum/go-ethereum/log" + "github.com/hashicorp/go-bexpr" +) + +// Handler is the global debugging handler. +var Handler = new(HandlerT) + +// HandlerT implements the debugging API. +// Do not create values of this type, use the one +// in the Handler variable instead. +type HandlerT struct { + mu sync.Mutex + cpuW io.WriteCloser + cpuFile string + traceW io.WriteCloser + traceFile string +} + +// Verbosity sets the log verbosity ceiling. The verbosity of individual packages +// and source files can be raised using Vmodule. +func (*HandlerT) Verbosity(level int) { + glogger.Verbosity(log.Lvl(level)) +} + +// Vmodule sets the log verbosity pattern. See package log for details on the +// pattern syntax. +func (*HandlerT) Vmodule(pattern string) error { + return glogger.Vmodule(pattern) +} + +// BacktraceAt sets the log backtrace location. See package log for details on +// the pattern syntax. +func (*HandlerT) BacktraceAt(location string) error { + return glogger.BacktraceAt(location) +} + +// MemStats returns detailed runtime memory statistics. +func (*HandlerT) MemStats() *runtime.MemStats { + s := new(runtime.MemStats) + runtime.ReadMemStats(s) + return s +} + +// GcStats returns GC statistics. +func (*HandlerT) GcStats() *debug.GCStats { + s := new(debug.GCStats) + debug.ReadGCStats(s) + return s +} + +// CpuProfile turns on CPU profiling for nsec seconds and writes +// profile data to file. +func (h *HandlerT) CpuProfile(file string, nsec uint) error { + if err := h.StartCPUProfile(file); err != nil { + return err + } + time.Sleep(time.Duration(nsec) * time.Second) + h.StopCPUProfile() + return nil +} + +// StartCPUProfile turns on CPU profiling, writing to the given file. +func (h *HandlerT) StartCPUProfile(file string) error { + h.mu.Lock() + defer h.mu.Unlock() + if h.cpuW != nil { + return errors.New("CPU profiling already in progress") + } + f, err := os.Create(expandHome(file)) + if err != nil { + return err + } + if err := pprof.StartCPUProfile(f); err != nil { + f.Close() + return err + } + h.cpuW = f + h.cpuFile = file + log.Info("CPU profiling started", "dump", h.cpuFile) + return nil +} + +// StopCPUProfile stops an ongoing CPU profile. +func (h *HandlerT) StopCPUProfile() error { + h.mu.Lock() + defer h.mu.Unlock() + pprof.StopCPUProfile() + if h.cpuW == nil { + return errors.New("CPU profiling not in progress") + } + log.Info("Done writing CPU profile", "dump", h.cpuFile) + h.cpuW.Close() + h.cpuW = nil + h.cpuFile = "" + return nil +} + +// GoTrace turns on tracing for nsec seconds and writes +// trace data to file. +func (h *HandlerT) GoTrace(file string, nsec uint) error { + if err := h.StartGoTrace(file); err != nil { + return err + } + time.Sleep(time.Duration(nsec) * time.Second) + h.StopGoTrace() + return nil +} + +// BlockProfile turns on goroutine profiling for nsec seconds and writes profile data to +// file. It uses a profile rate of 1 for most accurate information. If a different rate is +// desired, set the rate and write the profile manually. +func (*HandlerT) BlockProfile(file string, nsec uint) error { + runtime.SetBlockProfileRate(1) + time.Sleep(time.Duration(nsec) * time.Second) + defer runtime.SetBlockProfileRate(0) + return writeProfile("block", file) +} + +// SetBlockProfileRate sets the rate of goroutine block profile data collection. +// rate 0 disables block profiling. +func (*HandlerT) SetBlockProfileRate(rate int) { + runtime.SetBlockProfileRate(rate) +} + +// WriteBlockProfile writes a goroutine blocking profile to the given file. +func (*HandlerT) WriteBlockProfile(file string) error { + return writeProfile("block", file) +} + +// MutexProfile turns on mutex profiling for nsec seconds and writes profile data to file. +// It uses a profile rate of 1 for most accurate information. If a different rate is +// desired, set the rate and write the profile manually. +func (*HandlerT) MutexProfile(file string, nsec uint) error { + runtime.SetMutexProfileFraction(1) + time.Sleep(time.Duration(nsec) * time.Second) + defer runtime.SetMutexProfileFraction(0) + return writeProfile("mutex", file) +} + +// SetMutexProfileFraction sets the rate of mutex profiling. +func (*HandlerT) SetMutexProfileFraction(rate int) { + runtime.SetMutexProfileFraction(rate) +} + +// WriteMutexProfile writes a goroutine blocking profile to the given file. +func (*HandlerT) WriteMutexProfile(file string) error { + return writeProfile("mutex", file) +} + +// WriteMemProfile writes an allocation profile to the given file. +// Note that the profiling rate cannot be set through the API, +// it must be set on the command line. +func (*HandlerT) WriteMemProfile(file string) error { + return writeProfile("heap", file) +} + +// Stacks returns a printed representation of the stacks of all goroutines. It +// also permits the following optional filters to be used: +// - filter: boolean expression of packages to filter for +func (*HandlerT) Stacks(filter *string) string { + buf := new(bytes.Buffer) + pprof.Lookup("goroutine").WriteTo(buf, 2) + + // If any filtering was requested, execute them now + if filter != nil && len(*filter) > 0 { + expanded := *filter + + // The input filter is a logical expression of package names. Transform + // it into a proper boolean expression that can be fed into a parser and + // interpreter: + // + // E.g. (eth || snap) && !p2p -> (eth in Value || snap in Value) && p2p not in Value + expanded = regexp.MustCompile(`[:/\.A-Za-z0-9_-]+`).ReplaceAllString(expanded, "`$0` in Value") + expanded = regexp.MustCompile("!(`[:/\\.A-Za-z0-9_-]+`)").ReplaceAllString(expanded, "$1 not") + expanded = strings.Replace(expanded, "||", "or", -1) + expanded = strings.Replace(expanded, "&&", "and", -1) + log.Info("Expanded filter expression", "filter", *filter, "expanded", expanded) + + expr, err := bexpr.CreateEvaluator(expanded) + if err != nil { + log.Error("Failed to parse filter expression", "expanded", expanded, "err", err) + return "" + } + // Split the goroutine dump into segments and filter each + dump := buf.String() + buf.Reset() + + for _, trace := range strings.Split(dump, "\n\n") { + if ok, _ := expr.Evaluate(map[string]string{"Value": trace}); ok { + buf.WriteString(trace) + buf.WriteString("\n\n") + } + } + } + return buf.String() +} + +// FreeOSMemory forces a garbage collection. +func (*HandlerT) FreeOSMemory() { + debug.FreeOSMemory() +} + +// SetGCPercent sets the garbage collection target percentage. It returns the previous +// setting. A negative value disables GC. +func (*HandlerT) SetGCPercent(v int) int { + return debug.SetGCPercent(v) +} + +func writeProfile(name, file string) error { + p := pprof.Lookup(name) + log.Info("Writing profile records", "count", p.Count(), "type", name, "dump", file) + f, err := os.Create(expandHome(file)) + if err != nil { + return err + } + defer f.Close() + return p.WriteTo(f, 0) +} + +// expands home directory in file paths. +// ~someuser/tmp will not be expanded. +func expandHome(p string) string { + if strings.HasPrefix(p, "~/") || strings.HasPrefix(p, "~\\") { + home := os.Getenv("HOME") + if home == "" { + if usr, err := user.Current(); err == nil { + home = usr.HomeDir + } + } + if home != "" { + p = home + p[1:] + } + } + return filepath.Clean(p) +} diff --git a/internal/debug/flags.go b/internal/debug/flags.go new file mode 100644 index 0000000000..e0601b2e9a --- /dev/null +++ b/internal/debug/flags.go @@ -0,0 +1,217 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package debug + +import ( + "fmt" + "io" + "net/http" + _ "net/http/pprof" + "os" + "runtime" + + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + "github.com/ethereum/go-ethereum/metrics/exp" + "github.com/fjl/memsize/memsizeui" + "github.com/mattn/go-colorable" + "github.com/mattn/go-isatty" + "gopkg.in/urfave/cli.v1" +) + +var Memsize memsizeui.Handler + +var ( + verbosityFlag = cli.IntFlag{ + Name: "verbosity", + Usage: "Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail", + Value: 3, + } + vmoduleFlag = cli.StringFlag{ + Name: "vmodule", + Usage: "Per-module verbosity: comma-separated list of = (e.g. eth/*=5,p2p=4)", + Value: "", + } + logjsonFlag = cli.BoolFlag{ + Name: "log.json", + Usage: "Format logs with JSON", + } + backtraceAtFlag = cli.StringFlag{ + Name: "log.backtrace", + Usage: "Request a stack trace at a specific logging statement (e.g. \"block.go:271\")", + Value: "", + } + debugFlag = cli.BoolFlag{ + Name: "log.debug", + Usage: "Prepends log messages with call-site location (file and line number)", + } + pprofFlag = cli.BoolFlag{ + Name: "pprof", + Usage: "Enable the pprof HTTP server", + } + pprofPortFlag = cli.IntFlag{ + Name: "pprof.port", + Usage: "pprof HTTP server listening port", + Value: 6060, + } + pprofAddrFlag = cli.StringFlag{ + Name: "pprof.addr", + Usage: "pprof HTTP server listening interface", + Value: "127.0.0.1", + } + memprofilerateFlag = cli.IntFlag{ + Name: "pprof.memprofilerate", + Usage: "Turn on memory profiling with the given rate", + Value: runtime.MemProfileRate, + } + blockprofilerateFlag = cli.IntFlag{ + Name: "pprof.blockprofilerate", + Usage: "Turn on block profiling with the given rate", + } + cpuprofileFlag = cli.StringFlag{ + Name: "pprof.cpuprofile", + Usage: "Write CPU profile to the given file", + } + traceFlag = cli.StringFlag{ + Name: "trace", + Usage: "Write execution trace to the given file", + } +) + +// Flags holds all command-line flags required for debugging. +var Flags = []cli.Flag{ + verbosityFlag, + vmoduleFlag, + logjsonFlag, + backtraceAtFlag, + debugFlag, + pprofFlag, + pprofAddrFlag, + pprofPortFlag, + memprofilerateFlag, + blockprofilerateFlag, + cpuprofileFlag, + traceFlag, +} + +var glogger *log.GlogHandler + +func init() { + glogger = log.NewGlogHandler(log.StreamHandler(os.Stderr, log.TerminalFormat(false))) + glogger.Verbosity(log.LvlInfo) + log.Root().SetHandler(glogger) +} + +// Setup initializes profiling and logging based on the CLI flags. +// It should be called as early as possible in the program. +func Setup(ctx *cli.Context) error { + var ostream log.Handler + output := io.Writer(os.Stderr) + if ctx.GlobalBool(logjsonFlag.Name) { + ostream = log.StreamHandler(output, log.JSONFormat()) + } else { + usecolor := (isatty.IsTerminal(os.Stderr.Fd()) || isatty.IsCygwinTerminal(os.Stderr.Fd())) && os.Getenv("TERM") != "dumb" + if usecolor { + output = colorable.NewColorableStderr() + } + ostream = log.StreamHandler(output, log.TerminalFormat(usecolor)) + } + glogger.SetHandler(ostream) + + // logging + verbosity := ctx.GlobalInt(verbosityFlag.Name) + glogger.Verbosity(log.Lvl(verbosity)) + vmodule := ctx.GlobalString(vmoduleFlag.Name) + glogger.Vmodule(vmodule) + + debug := ctx.GlobalBool(debugFlag.Name) + if ctx.GlobalIsSet(debugFlag.Name) { + debug = ctx.GlobalBool(debugFlag.Name) + } + log.PrintOrigins(debug) + + backtrace := ctx.GlobalString(backtraceAtFlag.Name) + glogger.BacktraceAt(backtrace) + + log.Root().SetHandler(glogger) + + // profiling, tracing + runtime.MemProfileRate = memprofilerateFlag.Value + if ctx.GlobalIsSet(memprofilerateFlag.Name) { + runtime.MemProfileRate = ctx.GlobalInt(memprofilerateFlag.Name) + } + + blockProfileRate := ctx.GlobalInt(blockprofilerateFlag.Name) + Handler.SetBlockProfileRate(blockProfileRate) + + if traceFile := ctx.GlobalString(traceFlag.Name); traceFile != "" { + if err := Handler.StartGoTrace(traceFile); err != nil { + return err + } + } + + if cpuFile := ctx.GlobalString(cpuprofileFlag.Name); cpuFile != "" { + if err := Handler.StartCPUProfile(cpuFile); err != nil { + return err + } + } + + // pprof server + if ctx.GlobalBool(pprofFlag.Name) { + listenHost := ctx.GlobalString(pprofAddrFlag.Name) + + port := ctx.GlobalInt(pprofPortFlag.Name) + + address := fmt.Sprintf("%s:%d", listenHost, port) + // This context value ("metrics.addr") represents the utils.MetricsHTTPFlag.Name. + // It cannot be imported because it will cause a cyclical dependency. + StartPProf(address, !ctx.GlobalIsSet("metrics.addr")) + } + return nil +} + +func StartPProf(address string, withMetrics bool) { + // Hook go-metrics into expvar on any /debug/metrics request, load all vars + // from the registry into expvar, and execute regular expvar handler. + if withMetrics { + exp.Exp(metrics.DefaultRegistry) + } + http.Handle("/memsize/", http.StripPrefix("/memsize", &Memsize)) + log.Info("Starting pprof server", "addr", fmt.Sprintf("http://%s/debug/pprof", address)) + go func() { + if err := http.ListenAndServe(address, nil); err != nil { + log.Error("Failure in running pprof server", "err", err) + } + }() +} + +// Exit stops all running profiles, flushing their output to the +// respective file. +func Exit() { + Handler.StopCPUProfile() + Handler.StopGoTrace() +} diff --git a/internal/debug/loudpanic.go b/internal/debug/loudpanic.go new file mode 100644 index 0000000000..2bf10929ea --- /dev/null +++ b/internal/debug/loudpanic.go @@ -0,0 +1,38 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:build go1.6 +// +build go1.6 + +package debug + +import "runtime/debug" + +// LoudPanic panics in a way that gets all goroutine stacks printed on stderr. +func LoudPanic(x interface{}) { + debug.SetTraceback("all") + panic(x) +} diff --git a/internal/debug/loudpanic_fallback.go b/internal/debug/loudpanic_fallback.go new file mode 100644 index 0000000000..df21bb948a --- /dev/null +++ b/internal/debug/loudpanic_fallback.go @@ -0,0 +1,35 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:build !go1.6 +// +build !go1.6 + +package debug + +// LoudPanic panics in a way that gets all goroutine stacks printed on stderr. +func LoudPanic(x interface{}) { + panic(x) +} diff --git a/internal/debug/trace.go b/internal/debug/trace.go new file mode 100644 index 0000000000..7ecef70abc --- /dev/null +++ b/internal/debug/trace.go @@ -0,0 +1,74 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:build go1.5 +// +build go1.5 + +package debug + +import ( + "errors" + "os" + "runtime/trace" + + "github.com/ethereum/go-ethereum/log" +) + +// StartGoTrace turns on tracing, writing to the given file. +func (h *HandlerT) StartGoTrace(file string) error { + h.mu.Lock() + defer h.mu.Unlock() + if h.traceW != nil { + return errors.New("trace already in progress") + } + f, err := os.Create(expandHome(file)) + if err != nil { + return err + } + if err := trace.Start(f); err != nil { + f.Close() + return err + } + h.traceW = f + h.traceFile = file + log.Info("Go tracing started", "dump", h.traceFile) + return nil +} + +// StopTrace stops an ongoing trace. +func (h *HandlerT) StopGoTrace() error { + h.mu.Lock() + defer h.mu.Unlock() + trace.Stop() + if h.traceW == nil { + return errors.New("trace not in progress") + } + log.Info("Done writing Go trace", "dump", h.traceFile) + h.traceW.Close() + h.traceW = nil + h.traceFile = "" + return nil +} diff --git a/internal/debug/trace_fallback.go b/internal/debug/trace_fallback.go new file mode 100644 index 0000000000..b97a17012d --- /dev/null +++ b/internal/debug/trace_fallback.go @@ -0,0 +1,42 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +//go:build !go1.5 +// +build !go1.5 + +// no-op implementation of tracing methods for Go < 1.5. + +package debug + +import "errors" + +func (*HandlerT) StartGoTrace(string) error { + return errors.New("tracing is not supported on Go < 1.5") +} + +func (*HandlerT) StopGoTrace() error { + return errors.New("tracing is not supported on Go < 1.5") +} diff --git a/internal/ethapi/addrlock.go b/internal/ethapi/addrlock.go new file mode 100644 index 0000000000..2d00fdd2e7 --- /dev/null +++ b/internal/ethapi/addrlock.go @@ -0,0 +1,63 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethapi + +import ( + "sync" + + "github.com/ethereum/go-ethereum/common" +) + +type AddrLocker struct { + mu sync.Mutex + locks map[common.Address]*sync.Mutex +} + +// lock returns the lock of the given address. +func (l *AddrLocker) lock(address common.Address) *sync.Mutex { + l.mu.Lock() + defer l.mu.Unlock() + if l.locks == nil { + l.locks = make(map[common.Address]*sync.Mutex) + } + if _, ok := l.locks[address]; !ok { + l.locks[address] = new(sync.Mutex) + } + return l.locks[address] +} + +// LockAddr locks an account's mutex. This is used to prevent another tx getting the +// same nonce until the lock is released. The mutex prevents the (an identical nonce) from +// being read again during the time that the first transaction is being signed. +func (l *AddrLocker) LockAddr(address common.Address) { + l.lock(address).Lock() +} + +// UnlockAddr unlocks the mutex of the given account. +func (l *AddrLocker) UnlockAddr(address common.Address) { + l.lock(address).Unlock() +} diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go new file mode 100644 index 0000000000..72e4c0417a --- /dev/null +++ b/internal/ethapi/api.go @@ -0,0 +1,2050 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethapi + +import ( + "context" + "errors" + "fmt" + "math/big" + "strings" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/accounts/keystore" + "github.com/ava-labs/subnet-evm/accounts/scwallet" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/accounts/abi" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" + "github.com/tyler-smith/go-bip39" +) + +// PublicEthereumAPI provides an API to access Ethereum related information. +// It offers only methods that operate on public data that is freely available to anyone. +type PublicEthereumAPI struct { + b Backend +} + +// NewPublicEthereumAPI creates a new Ethereum protocol API. +func NewPublicEthereumAPI(b Backend) *PublicEthereumAPI { + return &PublicEthereumAPI{b} +} + +// GasPrice returns a suggestion for a gas price for legacy transactions. +func (s *PublicEthereumAPI) GasPrice(ctx context.Context) (*hexutil.Big, error) { + gasPrice, err := s.b.SuggestPrice(ctx) + if err != nil { + return nil, err + } + return (*hexutil.Big)(gasPrice), err +} + +// BaseFee returns an estimate for what the base fee will be on the next block if +// it is produced now. +func (s *PublicEthereumAPI) BaseFee(ctx context.Context) (*hexutil.Big, error) { + baseFee, err := s.b.EstimateBaseFee(ctx) + if err != nil { + return nil, err + } + return (*hexutil.Big)(baseFee), err +} + +// MaxPriorityFeePerGas returns a suggestion for a gas tip cap for dynamic fee transactions. +func (s *PublicEthereumAPI) MaxPriorityFeePerGas(ctx context.Context) (*hexutil.Big, error) { + tipcap, err := s.b.SuggestGasTipCap(ctx) + if err != nil { + return nil, err + } + return (*hexutil.Big)(tipcap), err +} + +type feeHistoryResult struct { + OldestBlock *hexutil.Big `json:"oldestBlock"` + Reward [][]*hexutil.Big `json:"reward,omitempty"` + BaseFee []*hexutil.Big `json:"baseFeePerGas,omitempty"` + GasUsedRatio []float64 `json:"gasUsedRatio"` +} + +func (s *PublicEthereumAPI) FeeHistory(ctx context.Context, blockCount rpc.DecimalOrHex, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (*feeHistoryResult, error) { + oldest, reward, baseFee, gasUsed, err := s.b.FeeHistory(ctx, int(blockCount), lastBlock, rewardPercentiles) + if err != nil { + return nil, err + } + results := &feeHistoryResult{ + OldestBlock: (*hexutil.Big)(oldest), + GasUsedRatio: gasUsed, + } + if reward != nil { + results.Reward = make([][]*hexutil.Big, len(reward)) + for i, w := range reward { + results.Reward[i] = make([]*hexutil.Big, len(w)) + for j, v := range w { + results.Reward[i][j] = (*hexutil.Big)(v) + } + } + } + if baseFee != nil { + results.BaseFee = make([]*hexutil.Big, len(baseFee)) + for i, v := range baseFee { + results.BaseFee[i] = (*hexutil.Big)(v) + } + } + return results, nil +} + +// PublicTxPoolAPI offers and API for the transaction pool. It only operates on data that is non confidential. +type PublicTxPoolAPI struct { + b Backend +} + +// NewPublicTxPoolAPI creates a new tx pool service that gives information about the transaction pool. +func NewPublicTxPoolAPI(b Backend) *PublicTxPoolAPI { + return &PublicTxPoolAPI{b} +} + +// Content returns the transactions contained within the transaction pool. +func (s *PublicTxPoolAPI) Content() map[string]map[string]map[string]*RPCTransaction { + content := map[string]map[string]map[string]*RPCTransaction{ + "pending": make(map[string]map[string]*RPCTransaction), + "queued": make(map[string]map[string]*RPCTransaction), + } + pending, queue := s.b.TxPoolContent() + curHeader := s.b.CurrentHeader() + estimatedBaseFee, _ := s.b.EstimateBaseFee(context.Background()) + // Flatten the pending transactions + for account, txs := range pending { + dump := make(map[string]*RPCTransaction) + for _, tx := range txs { + dump[fmt.Sprintf("%d", tx.Nonce())] = newRPCPendingTransaction(tx, curHeader, estimatedBaseFee, s.b.ChainConfig()) + } + content["pending"][account.Hex()] = dump + } + // Flatten the queued transactions + for account, txs := range queue { + dump := make(map[string]*RPCTransaction) + for _, tx := range txs { + dump[fmt.Sprintf("%d", tx.Nonce())] = newRPCPendingTransaction(tx, curHeader, estimatedBaseFee, s.b.ChainConfig()) + } + content["queued"][account.Hex()] = dump + } + return content +} + +// ContentFrom returns the transactions contained within the transaction pool. +func (s *PublicTxPoolAPI) ContentFrom(addr common.Address) map[string]map[string]*RPCTransaction { + content := make(map[string]map[string]*RPCTransaction, 2) + pending, queue := s.b.TxPoolContentFrom(addr) + curHeader := s.b.CurrentHeader() + estimatedBaseFee, _ := s.b.EstimateBaseFee(context.Background()) + + // Build the pending transactions + dump := make(map[string]*RPCTransaction, len(pending)) + for _, tx := range pending { + dump[fmt.Sprintf("%d", tx.Nonce())] = newRPCPendingTransaction(tx, curHeader, estimatedBaseFee, s.b.ChainConfig()) + } + content["pending"] = dump + + // Build the queued transactions + dump = make(map[string]*RPCTransaction, len(queue)) + for _, tx := range queue { + dump[fmt.Sprintf("%d", tx.Nonce())] = newRPCPendingTransaction(tx, curHeader, estimatedBaseFee, s.b.ChainConfig()) + } + content["queued"] = dump + + return content +} + +// Status returns the number of pending and queued transaction in the pool. +func (s *PublicTxPoolAPI) Status() map[string]hexutil.Uint { + pending, queue := s.b.Stats() + return map[string]hexutil.Uint{ + "pending": hexutil.Uint(pending), + "queued": hexutil.Uint(queue), + } +} + +// Inspect retrieves the content of the transaction pool and flattens it into an +// easily inspectable list. +func (s *PublicTxPoolAPI) Inspect() map[string]map[string]map[string]string { + content := map[string]map[string]map[string]string{ + "pending": make(map[string]map[string]string), + "queued": make(map[string]map[string]string), + } + pending, queue := s.b.TxPoolContent() + + // Define a formatter to flatten a transaction into a string + format := func(tx *types.Transaction) string { + if to := tx.To(); to != nil { + return fmt.Sprintf("%s: %v wei + %v gas × %v wei", tx.To().Hex(), tx.Value(), tx.Gas(), tx.GasPrice()) + } + return fmt.Sprintf("contract creation: %v wei + %v gas × %v wei", tx.Value(), tx.Gas(), tx.GasPrice()) + } + // Flatten the pending transactions + for account, txs := range pending { + dump := make(map[string]string) + for _, tx := range txs { + dump[fmt.Sprintf("%d", tx.Nonce())] = format(tx) + } + content["pending"][account.Hex()] = dump + } + // Flatten the queued transactions + for account, txs := range queue { + dump := make(map[string]string) + for _, tx := range txs { + dump[fmt.Sprintf("%d", tx.Nonce())] = format(tx) + } + content["queued"][account.Hex()] = dump + } + return content +} + +// PublicAccountAPI provides an API to access accounts managed by this node. +// It offers only methods that can retrieve accounts. +type PublicAccountAPI struct { + am *accounts.Manager +} + +// NewPublicAccountAPI creates a new PublicAccountAPI. +func NewPublicAccountAPI(am *accounts.Manager) *PublicAccountAPI { + return &PublicAccountAPI{am: am} +} + +// Accounts returns the collection of accounts this node manages +func (s *PublicAccountAPI) Accounts() []common.Address { + return s.am.Accounts() +} + +// PrivateAccountAPI provides an API to access accounts managed by this node. +// It offers methods to create, (un)lock en list accounts. Some methods accept +// passwords and are therefore considered private by default. +type PrivateAccountAPI struct { + am *accounts.Manager + nonceLock *AddrLocker + b Backend +} + +// NewPrivateAccountAPI create a new PrivateAccountAPI. +func NewPrivateAccountAPI(b Backend, nonceLock *AddrLocker) *PrivateAccountAPI { + return &PrivateAccountAPI{ + am: b.AccountManager(), + nonceLock: nonceLock, + b: b, + } +} + +// listAccounts will return a list of addresses for accounts this node manages. +func (s *PrivateAccountAPI) ListAccounts() []common.Address { + return s.am.Accounts() +} + +// rawWallet is a JSON representation of an accounts.Wallet interface, with its +// data contents extracted into plain fields. +type rawWallet struct { + URL string `json:"url"` + Status string `json:"status"` + Failure string `json:"failure,omitempty"` + Accounts []accounts.Account `json:"accounts,omitempty"` +} + +// ListWallets will return a list of wallets this node manages. +func (s *PrivateAccountAPI) ListWallets() []rawWallet { + wallets := make([]rawWallet, 0) // return [] instead of nil if empty + for _, wallet := range s.am.Wallets() { + status, failure := wallet.Status() + + raw := rawWallet{ + URL: wallet.URL().String(), + Status: status, + Accounts: wallet.Accounts(), + } + if failure != nil { + raw.Failure = failure.Error() + } + wallets = append(wallets, raw) + } + return wallets +} + +// OpenWallet initiates a hardware wallet opening procedure, establishing a USB +// connection and attempting to authenticate via the provided passphrase. Note, +// the method may return an extra challenge requiring a second open (e.g. the +// Trezor PIN matrix challenge). +func (s *PrivateAccountAPI) OpenWallet(url string, passphrase *string) error { + wallet, err := s.am.Wallet(url) + if err != nil { + return err + } + pass := "" + if passphrase != nil { + pass = *passphrase + } + return wallet.Open(pass) +} + +// DeriveAccount requests a HD wallet to derive a new account, optionally pinning +// it for later reuse. +func (s *PrivateAccountAPI) DeriveAccount(url string, path string, pin *bool) (accounts.Account, error) { + wallet, err := s.am.Wallet(url) + if err != nil { + return accounts.Account{}, err + } + derivPath, err := accounts.ParseDerivationPath(path) + if err != nil { + return accounts.Account{}, err + } + if pin == nil { + pin = new(bool) + } + return wallet.Derive(derivPath, *pin) +} + +// NewAccount will create a new account and returns the address for the new account. +func (s *PrivateAccountAPI) NewAccount(password string) (common.Address, error) { + ks, err := fetchKeystore(s.am) + if err != nil { + return common.Address{}, err + } + acc, err := ks.NewAccount(password) + if err == nil { + log.Info("Your new key was generated", "address", acc.Address) + log.Warn("Please backup your key file!", "path", acc.URL.Path) + log.Warn("Please remember your password!") + return acc.Address, nil + } + return common.Address{}, err +} + +// fetchKeystore retrieves the encrypted keystore from the account manager. +func fetchKeystore(am *accounts.Manager) (*keystore.KeyStore, error) { + if ks := am.Backends(keystore.KeyStoreType); len(ks) > 0 { + return ks[0].(*keystore.KeyStore), nil + } + return nil, errors.New("local keystore not used") +} + +// ImportRawKey stores the given hex encoded ECDSA key into the key directory, +// encrypting it with the passphrase. +func (s *PrivateAccountAPI) ImportRawKey(privkey string, password string) (common.Address, error) { + key, err := crypto.HexToECDSA(privkey) + if err != nil { + return common.Address{}, err + } + ks, err := fetchKeystore(s.am) + if err != nil { + return common.Address{}, err + } + acc, err := ks.ImportECDSA(key, password) + return acc.Address, err +} + +// UnlockAccount will unlock the account associated with the given address with +// the given password for duration seconds. If duration is nil it will use a +// default of 300 seconds. It returns an indication if the account was unlocked. +func (s *PrivateAccountAPI) UnlockAccount(ctx context.Context, addr common.Address, password string, duration *uint64) (bool, error) { + // When the API is exposed by external RPC(http, ws etc), unless the user + // explicitly specifies to allow the insecure account unlocking, otherwise + // it is disabled. + if s.b.ExtRPCEnabled() && !s.b.AccountManager().Config().InsecureUnlockAllowed { + return false, errors.New("account unlock with HTTP access is forbidden") + } + + const max = uint64(time.Duration(math.MaxInt64) / time.Second) + var d time.Duration + if duration == nil { + d = 300 * time.Second + } else if *duration > max { + return false, errors.New("unlock duration too large") + } else { + d = time.Duration(*duration) * time.Second + } + ks, err := fetchKeystore(s.am) + if err != nil { + return false, err + } + err = ks.TimedUnlock(accounts.Account{Address: addr}, password, d) + if err != nil { + log.Warn("Failed account unlock attempt", "address", addr, "err", err) + } + return err == nil, err +} + +// LockAccount will lock the account associated with the given address when it's unlocked. +func (s *PrivateAccountAPI) LockAccount(addr common.Address) bool { + if ks, err := fetchKeystore(s.am); err == nil { + return ks.Lock(addr) == nil + } + return false +} + +// signTransaction sets defaults and signs the given transaction +// NOTE: the caller needs to ensure that the nonceLock is held, if applicable, +// and release it after the transaction has been submitted to the tx pool +func (s *PrivateAccountAPI) signTransaction(ctx context.Context, args *TransactionArgs, passwd string) (*types.Transaction, error) { + // Look up the wallet containing the requested signer + account := accounts.Account{Address: args.from()} + wallet, err := s.am.Find(account) + if err != nil { + return nil, err + } + // Set some sanity defaults and terminate on failure + if err := args.setDefaults(ctx, s.b); err != nil { + return nil, err + } + // Assemble the transaction and sign with the wallet + tx := args.toTransaction() + + return wallet.SignTxWithPassphrase(account, passwd, tx, s.b.ChainConfig().ChainID) +} + +// SendTransaction will create a transaction from the given arguments and +// tries to sign it with the key associated with args.From. If the given +// passwd isn't able to decrypt the key it fails. +func (s *PrivateAccountAPI) SendTransaction(ctx context.Context, args TransactionArgs, passwd string) (common.Hash, error) { + if args.Nonce == nil { + // Hold the addresse's mutex around signing to prevent concurrent assignment of + // the same nonce to multiple accounts. + s.nonceLock.LockAddr(args.from()) + defer s.nonceLock.UnlockAddr(args.from()) + } + signed, err := s.signTransaction(ctx, &args, passwd) + if err != nil { + log.Warn("Failed transaction send attempt", "from", args.from(), "to", args.To, "value", args.Value.ToInt(), "err", err) + return common.Hash{}, err + } + return SubmitTransaction(ctx, s.b, signed) +} + +// SignTransaction will create a transaction from the given arguments and +// tries to sign it with the key associated with args.From. If the given passwd isn't +// able to decrypt the key it fails. The transaction is returned in RLP-form, not broadcast +// to other nodes +func (s *PrivateAccountAPI) SignTransaction(ctx context.Context, args TransactionArgs, passwd string) (*SignTransactionResult, error) { + // No need to obtain the noncelock mutex, since we won't be sending this + // tx into the transaction pool, but right back to the user + if args.From == nil { + return nil, fmt.Errorf("sender not specified") + } + if args.Gas == nil { + return nil, fmt.Errorf("gas not specified") + } + if args.GasPrice == nil && (args.MaxFeePerGas == nil || args.MaxPriorityFeePerGas == nil) { + return nil, fmt.Errorf("missing gasPrice or maxFeePerGas/maxPriorityFeePerGas") + } + if args.Nonce == nil { + return nil, fmt.Errorf("nonce not specified") + } + // Before actually signing the transaction, ensure the transaction fee is reasonable. + tx := args.toTransaction() + if err := checkTxFee(tx.GasPrice(), tx.Gas(), s.b.RPCTxFeeCap()); err != nil { + return nil, err + } + signed, err := s.signTransaction(ctx, &args, passwd) + if err != nil { + log.Warn("Failed transaction sign attempt", "from", args.from(), "to", args.To, "value", args.Value.ToInt(), "err", err) + return nil, err + } + data, err := signed.MarshalBinary() + if err != nil { + return nil, err + } + return &SignTransactionResult{data, signed}, nil +} + +// Sign calculates an Ethereum ECDSA signature for: +// keccack256("\x19Ethereum Signed Message:\n" + len(message) + message)) +// +// Note, the produced signature conforms to the secp256k1 curve R, S and V values, +// where the V value will be 27 or 28 for legacy reasons. +// +// The key used to calculate the signature is decrypted with the given password. +// +// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_sign +func (s *PrivateAccountAPI) Sign(ctx context.Context, data hexutil.Bytes, addr common.Address, passwd string) (hexutil.Bytes, error) { + // Look up the wallet containing the requested signer + account := accounts.Account{Address: addr} + + wallet, err := s.b.AccountManager().Find(account) + if err != nil { + return nil, err + } + // Assemble sign the data with the wallet + signature, err := wallet.SignTextWithPassphrase(account, passwd, data) + if err != nil { + log.Warn("Failed data sign attempt", "address", addr, "err", err) + return nil, err + } + signature[crypto.RecoveryIDOffset] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper + return signature, nil +} + +// EcRecover returns the address for the account that was used to create the signature. +// Note, this function is compatible with eth_sign and personal_sign. As such it recovers +// the address of: +// hash = keccak256("\x19Ethereum Signed Message:\n"${message length}${message}) +// addr = ecrecover(hash, signature) +// +// Note, the signature must conform to the secp256k1 curve R, S and V values, where +// the V value must be 27 or 28 for legacy reasons. +// +// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_ecRecover +func (s *PrivateAccountAPI) EcRecover(ctx context.Context, data, sig hexutil.Bytes) (common.Address, error) { + if len(sig) != crypto.SignatureLength { + return common.Address{}, fmt.Errorf("signature must be %d bytes long", crypto.SignatureLength) + } + if sig[crypto.RecoveryIDOffset] != 27 && sig[crypto.RecoveryIDOffset] != 28 { + return common.Address{}, fmt.Errorf("invalid Ethereum signature (V is not 27 or 28)") + } + sig[crypto.RecoveryIDOffset] -= 27 // Transform yellow paper V from 27/28 to 0/1 + + rpk, err := crypto.SigToPub(accounts.TextHash(data), sig) + if err != nil { + return common.Address{}, err + } + return crypto.PubkeyToAddress(*rpk), nil +} + +// SignAndSendTransaction was renamed to SendTransaction. This method is deprecated +// and will be removed in the future. It primary goal is to give clients time to update. +func (s *PrivateAccountAPI) SignAndSendTransaction(ctx context.Context, args TransactionArgs, passwd string) (common.Hash, error) { + return s.SendTransaction(ctx, args, passwd) +} + +// InitializeWallet initializes a new wallet at the provided URL, by generating and returning a new private key. +func (s *PrivateAccountAPI) InitializeWallet(ctx context.Context, url string) (string, error) { + wallet, err := s.am.Wallet(url) + if err != nil { + return "", err + } + + entropy, err := bip39.NewEntropy(256) + if err != nil { + return "", err + } + + mnemonic, err := bip39.NewMnemonic(entropy) + if err != nil { + return "", err + } + + seed := bip39.NewSeed(mnemonic, "") + + switch wallet := wallet.(type) { + case *scwallet.Wallet: + return mnemonic, wallet.Initialize(seed) + default: + return "", fmt.Errorf("specified wallet does not support initialization") + } +} + +// Unpair deletes a pairing between wallet and geth. +func (s *PrivateAccountAPI) Unpair(ctx context.Context, url string, pin string) error { + wallet, err := s.am.Wallet(url) + if err != nil { + return err + } + + switch wallet := wallet.(type) { + case *scwallet.Wallet: + return wallet.Unpair([]byte(pin)) + default: + return fmt.Errorf("specified wallet does not support pairing") + } +} + +// PublicBlockChainAPI provides an API to access the Ethereum blockchain. +// It offers only methods that operate on public data that is freely available to anyone. +type PublicBlockChainAPI struct { + b Backend +} + +// NewPublicBlockChainAPI creates a new Ethereum blockchain API. +func NewPublicBlockChainAPI(b Backend) *PublicBlockChainAPI { + return &PublicBlockChainAPI{b} +} + +// ChainId is the EIP-155 replay-protection chain id for the current ethereum chain config. +func (api *PublicBlockChainAPI) ChainId() (*hexutil.Big, error) { + // if current block is at or past the EIP-155 replay-protection fork block, return chainID from config + if config := api.b.ChainConfig(); config.IsEIP155(api.b.CurrentBlock().Number()) { + return (*hexutil.Big)(config.ChainID), nil + } + return nil, fmt.Errorf("chain not synced beyond EIP-155 replay-protection fork block") +} + +// BlockNumber returns the block number of the chain head. +func (s *PublicBlockChainAPI) BlockNumber() hexutil.Uint64 { + header, _ := s.b.HeaderByNumber(context.Background(), rpc.LatestBlockNumber) // latest header should always be available + return hexutil.Uint64(header.Number.Uint64()) +} + +// GetBalance returns the amount of wei for the given address in the state of the +// given block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta +// block numbers are also allowed. +func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (*hexutil.Big, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if state == nil || err != nil { + return nil, err + } + return (*hexutil.Big)(state.GetBalance(address)), state.Error() +} + +// Result structs for GetProof +type AccountResult struct { + Address common.Address `json:"address"` + AccountProof []string `json:"accountProof"` + Balance *hexutil.Big `json:"balance"` + CodeHash common.Hash `json:"codeHash"` + Nonce hexutil.Uint64 `json:"nonce"` + StorageHash common.Hash `json:"storageHash"` + StorageProof []StorageResult `json:"storageProof"` +} + +type StorageResult struct { + Key string `json:"key"` + Value *hexutil.Big `json:"value"` + Proof []string `json:"proof"` +} + +// GetProof returns the Merkle-proof for a given account and optionally some storage keys. +func (s *PublicBlockChainAPI) GetProof(ctx context.Context, address common.Address, storageKeys []string, blockNrOrHash rpc.BlockNumberOrHash) (*AccountResult, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if state == nil || err != nil { + return nil, err + } + + storageTrie := state.StorageTrie(address) + storageHash := types.EmptyRootHash + codeHash := state.GetCodeHash(address) + storageProof := make([]StorageResult, len(storageKeys)) + + // if we have a storageTrie, (which means the account exists), we can update the storagehash + if storageTrie != nil { + storageHash = storageTrie.Hash() + } else { + // no storageTrie means the account does not exist, so the codeHash is the hash of an empty bytearray. + codeHash = crypto.Keccak256Hash(nil) + } + + // create the proof for the storageKeys + for i, key := range storageKeys { + if storageTrie != nil { + proof, storageError := state.GetStorageProof(address, common.HexToHash(key)) + if storageError != nil { + return nil, storageError + } + storageProof[i] = StorageResult{key, (*hexutil.Big)(state.GetState(address, common.HexToHash(key)).Big()), toHexSlice(proof)} + } else { + storageProof[i] = StorageResult{key, &hexutil.Big{}, []string{}} + } + } + + // create the accountProof + accountProof, proofErr := state.GetProof(address) + if proofErr != nil { + return nil, proofErr + } + + return &AccountResult{ + Address: address, + AccountProof: toHexSlice(accountProof), + Balance: (*hexutil.Big)(state.GetBalance(address)), + CodeHash: codeHash, + Nonce: hexutil.Uint64(state.GetNonce(address)), + StorageHash: storageHash, + StorageProof: storageProof, + }, state.Error() +} + +// GetHeaderByNumber returns the requested canonical block header. +// * When blockNr is -1 the chain head is returned. +// * When blockNr is -2 the pending chain head is returned. +func (s *PublicBlockChainAPI) GetHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (map[string]interface{}, error) { + header, err := s.b.HeaderByNumber(ctx, number) + if header != nil && err == nil { + response := s.rpcMarshalHeader(ctx, header) + // subnet-evm has no notion of a pending block + // if number == rpc.PendingBlockNumber { + // // Pending header need to nil out a few fields + // for _, field := range []string{"hash", "nonce", "miner"} { + // response[field] = nil + // } + // } + return response, err + } + return nil, err +} + +// GetHeaderByHash returns the requested header by hash. +func (s *PublicBlockChainAPI) GetHeaderByHash(ctx context.Context, hash common.Hash) map[string]interface{} { + header, _ := s.b.HeaderByHash(ctx, hash) + if header != nil { + return s.rpcMarshalHeader(ctx, header) + } + return nil +} + +// GetBlockByNumber returns the requested canonical block. +// * When blockNr is -1 the chain head is returned. +// * When blockNr is -2 the pending chain head is returned. +// * When fullTx is true all transactions in the block are returned, otherwise +// only the transaction hash is returned. +func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, number rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) { + block, err := s.b.BlockByNumber(ctx, number) + if block != nil && err == nil { + response, err := s.rpcMarshalBlock(ctx, block, true, fullTx) + // subnet-evm has no notion of a pending block + // if err == nil && number == rpc.PendingBlockNumber { + // // Pending blocks need to nil out a few fields + // for _, field := range []string{"hash", "nonce", "miner"} { + // response[field] = nil + // } + // } + return response, err + } + return nil, err +} + +// GetBlockByHash returns the requested block. When fullTx is true all transactions in the block are returned in full +// detail, otherwise only the transaction hash is returned. +func (s *PublicBlockChainAPI) GetBlockByHash(ctx context.Context, hash common.Hash, fullTx bool) (map[string]interface{}, error) { + block, err := s.b.BlockByHash(ctx, hash) + if block != nil { + return s.rpcMarshalBlock(ctx, block, true, fullTx) + } + return nil, err +} + +// GetUncleByBlockNumberAndIndex returns the uncle block for the given block hash and index. When fullTx is true +// all transactions in the block are returned in full detail, otherwise only the transaction hash is returned. +func (s *PublicBlockChainAPI) GetUncleByBlockNumberAndIndex(ctx context.Context, blockNr rpc.BlockNumber, index hexutil.Uint) (map[string]interface{}, error) { + block, err := s.b.BlockByNumber(ctx, blockNr) + if block != nil { + uncles := block.Uncles() + if index >= hexutil.Uint(len(uncles)) { + log.Debug("Requested uncle not found", "number", blockNr, "hash", block.Hash(), "index", index) + return nil, nil + } + block = types.NewBlockWithHeader(uncles[index]) + return s.rpcMarshalBlock(ctx, block, false, false) + } + return nil, err +} + +// GetUncleByBlockHashAndIndex returns the uncle block for the given block hash and index. When fullTx is true +// all transactions in the block are returned in full detail, otherwise only the transaction hash is returned. +func (s *PublicBlockChainAPI) GetUncleByBlockHashAndIndex(ctx context.Context, blockHash common.Hash, index hexutil.Uint) (map[string]interface{}, error) { + block, err := s.b.BlockByHash(ctx, blockHash) + if block != nil { + uncles := block.Uncles() + if index >= hexutil.Uint(len(uncles)) { + log.Debug("Requested uncle not found", "number", block.Number(), "hash", blockHash, "index", index) + return nil, nil + } + block = types.NewBlockWithHeader(uncles[index]) + return s.rpcMarshalBlock(ctx, block, false, false) + } + return nil, err +} + +// GetUncleCountByBlockNumber returns number of uncles in the block for the given block number +func (s *PublicBlockChainAPI) GetUncleCountByBlockNumber(ctx context.Context, blockNr rpc.BlockNumber) *hexutil.Uint { + if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil { + n := hexutil.Uint(len(block.Uncles())) + return &n + } + return nil +} + +// GetUncleCountByBlockHash returns number of uncles in the block for the given block hash +func (s *PublicBlockChainAPI) GetUncleCountByBlockHash(ctx context.Context, blockHash common.Hash) *hexutil.Uint { + if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil { + n := hexutil.Uint(len(block.Uncles())) + return &n + } + return nil +} + +// GetCode returns the code stored at the given address in the state for the given block number. +func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if state == nil || err != nil { + return nil, err + } + code := state.GetCode(address) + return code, state.Error() +} + +// GetStorageAt returns the storage from the state at the given address, key and +// block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta block +// numbers are also allowed. +func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if state == nil || err != nil { + return nil, err + } + res := state.GetState(address, common.HexToHash(key)) + return res[:], state.Error() +} + +// OverrideAccount indicates the overriding fields of account during the execution +// of a message call. +// Note, state and stateDiff can't be specified at the same time. If state is +// set, message execution will only use the data in the given state. Otherwise +// if statDiff is set, all diff will be applied first and then execute the call +// message. +type OverrideAccount struct { + Nonce *hexutil.Uint64 `json:"nonce"` + Code *hexutil.Bytes `json:"code"` + Balance **hexutil.Big `json:"balance"` + State *map[common.Hash]common.Hash `json:"state"` + StateDiff *map[common.Hash]common.Hash `json:"stateDiff"` +} + +// StateOverride is the collection of overridden accounts. +type StateOverride map[common.Address]OverrideAccount + +// Apply overrides the fields of specified accounts into the given state. +func (diff *StateOverride) Apply(state *state.StateDB) error { + if diff == nil { + return nil + } + for addr, account := range *diff { + // Override account nonce. + if account.Nonce != nil { + state.SetNonce(addr, uint64(*account.Nonce)) + } + // Override account(contract) code. + if account.Code != nil { + state.SetCode(addr, *account.Code) + } + // Override account balance. + if account.Balance != nil { + state.SetBalance(addr, (*big.Int)(*account.Balance)) + } + if account.State != nil && account.StateDiff != nil { + return fmt.Errorf("account %s has both 'state' and 'stateDiff'", addr.Hex()) + } + // Replace entire state if caller requires. + if account.State != nil { + state.SetStorage(addr, *account.State) + } + // Apply state diff into specified accounts. + if account.StateDiff != nil { + for key, value := range *account.StateDiff { + state.SetState(addr, key, value) + } + } + } + return nil +} + +func DoCall(ctx context.Context, b Backend, args TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, overrides *StateOverride, timeout time.Duration, globalGasCap uint64) (*core.ExecutionResult, error) { + defer func(start time.Time) { log.Debug("Executing EVM call finished", "runtime", time.Since(start)) }(time.Now()) + + state, header, err := b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if state == nil || err != nil { + return nil, err + } + if err := overrides.Apply(state); err != nil { + return nil, err + } + // If the request is for the pending block, override the block timestamp, number, and estimated + // base fee, so that the check runs as if it were run on a newly generated block. + if blkNumber, isNum := blockNrOrHash.Number(); isNum && blkNumber == rpc.PendingBlockNumber { + // Override header with a copy to ensure the original header is not modified + header = types.CopyHeader(header) + // Grab the hash of the unmodified header, so that the modified header can point to the + // prior block as its parent. + parentHash := header.Hash() + header.Time = uint64(time.Now().Unix()) + header.ParentHash = parentHash + header.Number = new(big.Int).Add(header.Number, big.NewInt(1)) + estimatedBaseFee, err := b.EstimateBaseFee(ctx) + if err != nil { + return nil, err + } + header.BaseFee = estimatedBaseFee + } + + // Setup context so it may be cancelled the call has completed + // or, in case of unmetered gas, setup a context with a timeout. + var cancel context.CancelFunc + if timeout > 0 { + ctx, cancel = context.WithTimeout(ctx, timeout) + } else { + ctx, cancel = context.WithCancel(ctx) + } + // Make sure the context is cancelled when the call has completed + // this makes sure resources are cleaned up. + defer cancel() + + // Get a new instance of the EVM. + msg, err := args.ToMessage(globalGasCap, header.BaseFee) + if err != nil { + return nil, err + } + evm, vmError, err := b.GetEVM(ctx, msg, state, header, &vm.Config{NoBaseFee: true}) + if err != nil { + return nil, err + } + // Wait for the context to be done and cancel the evm. Even if the + // EVM has finished, cancelling may be done (repeatedly) + go func() { + <-ctx.Done() + evm.Cancel() + }() + + // Execute the message. + gp := new(core.GasPool).AddGas(math.MaxUint64) + result, err := core.ApplyMessage(evm, msg, gp) + if err := vmError(); err != nil { + return nil, err + } + + // If the timer caused an abort, return an appropriate error message + if evm.Cancelled() { + return nil, fmt.Errorf("execution aborted (timeout = %v)", timeout) + } + if err != nil { + return result, fmt.Errorf("err: %w (supplied gas %d)", err, msg.Gas()) + } + return result, nil +} + +func newRevertError(result *core.ExecutionResult) *revertError { + reason, errUnpack := abi.UnpackRevert(result.Revert()) + err := errors.New("execution reverted") + if errUnpack == nil { + err = fmt.Errorf("execution reverted: %v", reason) + } + return &revertError{ + error: err, + reason: hexutil.Encode(result.Revert()), + } +} + +// revertError is an API error that encompassas an EVM revertal with JSON error +// code and a binary data blob. +type revertError struct { + error + reason string // revert reason hex encoded +} + +// ErrorCode returns the JSON error code for a revertal. +// See: https://github.com/ethereum/wiki/wiki/JSON-RPC-Error-Codes-Improvement-Proposal +func (e *revertError) ErrorCode() int { + return 3 +} + +// ErrorData returns the hex encoded revert reason. +func (e *revertError) ErrorData() interface{} { + return e.reason +} + +// Call executes the given transaction on the state for the given block number. +// +// Additionally, the caller can specify a batch of contract for fields overriding. +// +// Note, this function doesn't make and changes in the state/blockchain and is +// useful to execute and retrieve values. +func (s *PublicBlockChainAPI) Call(ctx context.Context, args TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, overrides *StateOverride) (hexutil.Bytes, error) { + result, err := DoCall(ctx, s.b, args, blockNrOrHash, overrides, s.b.RPCEVMTimeout(), s.b.RPCGasCap()) + if err != nil { + return nil, err + } + // If the result contains a revert reason, try to unpack and return it. + if len(result.Revert()) > 0 { + return nil, newRevertError(result) + } + return result.Return(), result.Err +} + +func DoEstimateGas(ctx context.Context, b Backend, args TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, gasCap uint64) (hexutil.Uint64, error) { + // Binary search the gas requirement, as it may be higher than the amount used + var ( + lo uint64 = params.TxGas - 1 + hi uint64 + cap uint64 + ) + // Use zero address if sender unspecified. + if args.From == nil { + args.From = new(common.Address) + } + // Determine the highest gas limit can be used during the estimation. + if args.Gas != nil && uint64(*args.Gas) >= params.TxGas { + hi = uint64(*args.Gas) + } else { + // Retrieve the block to act as the gas ceiling + block, err := b.BlockByNumberOrHash(ctx, blockNrOrHash) + if err != nil { + return 0, err + } + if block == nil { + return 0, errors.New("block not found") + } + hi = block.GasLimit() + } + // Normalize the max fee per gas the call is willing to spend. + var feeCap *big.Int + if args.GasPrice != nil && (args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil) { + return 0, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified") + } else if args.GasPrice != nil { + feeCap = args.GasPrice.ToInt() + } else if args.MaxFeePerGas != nil { + feeCap = args.MaxFeePerGas.ToInt() + } else { + feeCap = common.Big0 + } + // Recap the highest gas limit with account's available balance. + if feeCap.BitLen() != 0 { + state, _, err := b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if err != nil { + return 0, err + } + balance := state.GetBalance(*args.From) // from can't be nil + available := new(big.Int).Set(balance) + if args.Value != nil { + if args.Value.ToInt().Cmp(available) >= 0 { + return 0, errors.New("insufficient funds for transfer") + } + available.Sub(available, args.Value.ToInt()) + } + allowance := new(big.Int).Div(available, feeCap) + + // If the allowance is larger than maximum uint64, skip checking + if allowance.IsUint64() && hi > allowance.Uint64() { + transfer := args.Value + if transfer == nil { + transfer = new(hexutil.Big) + } + log.Warn("Gas estimation capped by limited funds", "original", hi, "balance", balance, + "sent", transfer.ToInt(), "maxFeePerGas", feeCap, "fundable", allowance) + hi = allowance.Uint64() + } + } + // Recap the highest gas allowance with specified gascap. + if gasCap != 0 && hi > gasCap { + log.Warn("Caller gas above allowance, capping", "requested", hi, "cap", gasCap) + hi = gasCap + } + cap = hi + + // Create a helper to check if a gas allowance results in an executable transaction + executable := func(gas uint64) (bool, *core.ExecutionResult, error) { + args.Gas = (*hexutil.Uint64)(&gas) + + result, err := DoCall(ctx, b, args, blockNrOrHash, nil, 0, gasCap) + if err != nil { + if errors.Is(err, core.ErrIntrinsicGas) { + return true, nil, nil // Special case, raise gas limit + } + return true, nil, err // Bail out + } + return result.Failed(), result, nil + } + // Execute the binary search and hone in on an executable gas limit + for lo+1 < hi { + mid := (hi + lo) / 2 + failed, _, err := executable(mid) + // If the error is not nil(consensus error), it means the provided message + // call or transaction will never be accepted no matter how much gas it is + // assigned. Return the error directly, don't struggle any more. + if err != nil { + return 0, err + } + if failed { + lo = mid + } else { + hi = mid + } + } + // Reject the transaction as invalid if it still fails at the highest allowance + if hi == cap { + failed, result, err := executable(hi) + if err != nil { + return 0, err + } + if failed { + if result != nil && result.Err != vm.ErrOutOfGas { + if len(result.Revert()) > 0 { + return 0, newRevertError(result) + } + return 0, result.Err + } + // Otherwise, the specified gas cap is too low + return 0, fmt.Errorf("gas required exceeds allowance (%d)", cap) + } + } + return hexutil.Uint64(hi), nil +} + +// EstimateGas returns an estimate of the amount of gas needed to execute the +// given transaction against the current pending block. +func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args TransactionArgs, blockNrOrHash *rpc.BlockNumberOrHash) (hexutil.Uint64, error) { + bNrOrHash := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) + if blockNrOrHash != nil { + bNrOrHash = *blockNrOrHash + } + return DoEstimateGas(ctx, s.b, args, bNrOrHash, s.b.RPCGasCap()) +} + +// ExecutionResult groups all structured logs emitted by the EVM +// while replaying a transaction in debug mode as well as transaction +// execution status, the amount of gas used and the return value +type ExecutionResult struct { + Gas uint64 `json:"gas"` + Failed bool `json:"failed"` + ReturnValue string `json:"returnValue"` + StructLogs []StructLogRes `json:"structLogs"` +} + +// StructLogRes stores a structured log emitted by the EVM while replaying a +// transaction in debug mode +type StructLogRes struct { + Pc uint64 `json:"pc"` + Op string `json:"op"` + Gas uint64 `json:"gas"` + GasCost uint64 `json:"gasCost"` + Depth int `json:"depth"` + Error string `json:"error,omitempty"` + Stack *[]string `json:"stack,omitempty"` + Memory *[]string `json:"memory,omitempty"` + Storage *map[string]string `json:"storage,omitempty"` +} + +// FormatLogs formats EVM returned structured logs for json output +func FormatLogs(logs []vm.StructLog) []StructLogRes { + formatted := make([]StructLogRes, len(logs)) + for index, trace := range logs { + formatted[index] = StructLogRes{ + Pc: trace.Pc, + Op: trace.Op.String(), + Gas: trace.Gas, + GasCost: trace.GasCost, + Depth: trace.Depth, + Error: trace.ErrorString(), + } + if trace.Stack != nil { + stack := make([]string, len(trace.Stack)) + for i, stackValue := range trace.Stack { + stack[i] = stackValue.Hex() + } + formatted[index].Stack = &stack + } + if trace.Memory != nil { + memory := make([]string, 0, (len(trace.Memory)+31)/32) + for i := 0; i+32 <= len(trace.Memory); i += 32 { + memory = append(memory, fmt.Sprintf("%x", trace.Memory[i:i+32])) + } + formatted[index].Memory = &memory + } + if trace.Storage != nil { + storage := make(map[string]string) + for i, storageValue := range trace.Storage { + storage[fmt.Sprintf("%x", i)] = fmt.Sprintf("%x", storageValue) + } + formatted[index].Storage = &storage + } + } + return formatted +} + +// RPCMarshalHeader converts the given header to the RPC output . +func RPCMarshalHeader(head *types.Header) map[string]interface{} { + result := map[string]interface{}{ + "number": (*hexutil.Big)(head.Number), + "hash": head.Hash(), + "parentHash": head.ParentHash, + "nonce": head.Nonce, + "mixHash": head.MixDigest, + "sha3Uncles": head.UncleHash, + "logsBloom": head.Bloom, + "stateRoot": head.Root, + "miner": head.Coinbase, + "difficulty": (*hexutil.Big)(head.Difficulty), + "extraData": hexutil.Bytes(head.Extra), + "size": hexutil.Uint64(head.Size()), + "gasLimit": hexutil.Uint64(head.GasLimit), + "gasUsed": hexutil.Uint64(head.GasUsed), + "timestamp": hexutil.Uint64(head.Time), + "transactionsRoot": head.TxHash, + "receiptsRoot": head.ReceiptHash, + } + + if head.BaseFee != nil { + result["baseFeePerGas"] = (*hexutil.Big)(head.BaseFee) + } + if head.BlockGasCost != nil { + result["blockGasCost"] = (*hexutil.Big)(head.BlockGasCost) + } + + return result +} + +// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are +// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain +// transaction hashes. +func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool, config *params.ChainConfig) (map[string]interface{}, error) { + fields := RPCMarshalHeader(block.Header()) + fields["size"] = hexutil.Uint64(block.Size()) + + if inclTx { + formatTx := func(tx *types.Transaction) (interface{}, error) { + return tx.Hash(), nil + } + if fullTx { + formatTx = func(tx *types.Transaction) (interface{}, error) { + return newRPCTransactionFromBlockHash(block, tx.Hash(), config), nil + } + } + txs := block.Transactions() + transactions := make([]interface{}, len(txs)) + var err error + for i, tx := range txs { + if transactions[i], err = formatTx(tx); err != nil { + return nil, err + } + } + fields["transactions"] = transactions + } + uncles := block.Uncles() + uncleHashes := make([]common.Hash, len(uncles)) + for i, uncle := range uncles { + uncleHashes[i] = uncle.Hash() + } + fields["uncles"] = uncleHashes + + return fields, nil +} + +// rpcMarshalHeader uses the generalized output filler, then adds the total difficulty field, which requires +// a `PublicBlockchainAPI`. +func (s *PublicBlockChainAPI) rpcMarshalHeader(ctx context.Context, header *types.Header) map[string]interface{} { + fields := RPCMarshalHeader(header) + fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(ctx, header.Hash())) + return fields +} + +// rpcMarshalBlock uses the generalized output filler, then adds the total difficulty field, which requires +// a `PublicBlockchainAPI`. +func (s *PublicBlockChainAPI) rpcMarshalBlock(ctx context.Context, b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) { + fields, err := RPCMarshalBlock(b, inclTx, fullTx, s.b.ChainConfig()) + if err != nil { + return nil, err + } + if inclTx { + fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(ctx, b.Hash())) + } + return fields, err +} + +// RPCTransaction represents a transaction that will serialize to the RPC representation of a transaction +type RPCTransaction struct { + BlockHash *common.Hash `json:"blockHash"` + BlockNumber *hexutil.Big `json:"blockNumber"` + From common.Address `json:"from"` + Gas hexutil.Uint64 `json:"gas"` + GasPrice *hexutil.Big `json:"gasPrice"` + GasFeeCap *hexutil.Big `json:"maxFeePerGas,omitempty"` + GasTipCap *hexutil.Big `json:"maxPriorityFeePerGas,omitempty"` + Hash common.Hash `json:"hash"` + Input hexutil.Bytes `json:"input"` + Nonce hexutil.Uint64 `json:"nonce"` + To *common.Address `json:"to"` + TransactionIndex *hexutil.Uint64 `json:"transactionIndex"` + Value *hexutil.Big `json:"value"` + Type hexutil.Uint64 `json:"type"` + Accesses *types.AccessList `json:"accessList,omitempty"` + ChainID *hexutil.Big `json:"chainId,omitempty"` + V *hexutil.Big `json:"v"` + R *hexutil.Big `json:"r"` + S *hexutil.Big `json:"s"` +} + +// newRPCTransaction returns a transaction that will serialize to the RPC +// representation, with the given location metadata set (if available). +func newRPCTransaction(tx *types.Transaction, blockHash common.Hash, blockNumber uint64, index uint64, baseFee *big.Int, config *params.ChainConfig) *RPCTransaction { + // Determine the signer. For replay-protected transactions, use the most permissive + // signer, because we assume that signers are backwards-compatible with old + // transactions. For non-protected transactions, the homestead signer signer is used + // because the return value of ChainId is zero for those transactions. + var signer types.Signer + if tx.Protected() { + signer = types.LatestSignerForChainID(tx.ChainId()) + } else { + signer = types.HomesteadSigner{} + } + from, _ := types.Sender(signer, tx) + v, r, s := tx.RawSignatureValues() + result := &RPCTransaction{ + Type: hexutil.Uint64(tx.Type()), + From: from, + Gas: hexutil.Uint64(tx.Gas()), + GasPrice: (*hexutil.Big)(tx.GasPrice()), + Hash: tx.Hash(), + Input: hexutil.Bytes(tx.Data()), + Nonce: hexutil.Uint64(tx.Nonce()), + To: tx.To(), + Value: (*hexutil.Big)(tx.Value()), + V: (*hexutil.Big)(v), + R: (*hexutil.Big)(r), + S: (*hexutil.Big)(s), + } + if blockHash != (common.Hash{}) { + result.BlockHash = &blockHash + result.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber)) + result.TransactionIndex = (*hexutil.Uint64)(&index) + } + switch tx.Type() { + case types.AccessListTxType: + al := tx.AccessList() + result.Accesses = &al + result.ChainID = (*hexutil.Big)(tx.ChainId()) + case types.DynamicFeeTxType: + al := tx.AccessList() + result.Accesses = &al + result.ChainID = (*hexutil.Big)(tx.ChainId()) + result.GasFeeCap = (*hexutil.Big)(tx.GasFeeCap()) + result.GasTipCap = (*hexutil.Big)(tx.GasTipCap()) + // if the transaction has been mined, compute the effective gas price + if baseFee != nil && blockHash != (common.Hash{}) { + // price = min(tip, gasFeeCap - baseFee) + baseFee + price := math.BigMin(new(big.Int).Add(tx.GasTipCap(), baseFee), tx.GasFeeCap()) + result.GasPrice = (*hexutil.Big)(price) + } else { + result.GasPrice = (*hexutil.Big)(tx.GasFeeCap()) + } + } + return result +} + +// newRPCPendingTransaction returns a pending transaction that will serialize to the RPC representation +func newRPCPendingTransaction(tx *types.Transaction, current *types.Header, baseFee *big.Int, config *params.ChainConfig) *RPCTransaction { + blockNumber := uint64(0) + if current != nil { + blockNumber = current.Number.Uint64() + } + return newRPCTransaction(tx, common.Hash{}, blockNumber, 0, baseFee, config) +} + +// newRPCTransactionFromBlockIndex returns a transaction that will serialize to the RPC representation. +func newRPCTransactionFromBlockIndex(b *types.Block, index uint64, config *params.ChainConfig) *RPCTransaction { + txs := b.Transactions() + if index >= uint64(len(txs)) { + return nil + } + return newRPCTransaction(txs[index], b.Hash(), b.NumberU64(), index, b.BaseFee(), config) +} + +// newRPCRawTransactionFromBlockIndex returns the bytes of a transaction given a block and a transaction index. +func newRPCRawTransactionFromBlockIndex(b *types.Block, index uint64) hexutil.Bytes { + txs := b.Transactions() + if index >= uint64(len(txs)) { + return nil + } + blob, _ := txs[index].MarshalBinary() + return blob +} + +// newRPCTransactionFromBlockHash returns a transaction that will serialize to the RPC representation. +func newRPCTransactionFromBlockHash(b *types.Block, hash common.Hash, config *params.ChainConfig) *RPCTransaction { + for idx, tx := range b.Transactions() { + if tx.Hash() == hash { + return newRPCTransactionFromBlockIndex(b, uint64(idx), config) + } + } + return nil +} + +// accessListResult returns an optional accesslist +// Its the result of the `debug_createAccessList` RPC call. +// It contains an error if the transaction itself failed. +type accessListResult struct { + Accesslist *types.AccessList `json:"accessList"` + Error string `json:"error,omitempty"` + GasUsed hexutil.Uint64 `json:"gasUsed"` +} + +// CreateAccessList creates a EIP-2930 type AccessList for the given transaction. +// Reexec and BlockNrOrHash can be specified to create the accessList on top of a certain state. +func (s *PublicBlockChainAPI) CreateAccessList(ctx context.Context, args TransactionArgs, blockNrOrHash *rpc.BlockNumberOrHash) (*accessListResult, error) { + bNrOrHash := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) + if blockNrOrHash != nil { + bNrOrHash = *blockNrOrHash + } + acl, gasUsed, vmerr, err := AccessList(ctx, s.b, bNrOrHash, args) + if err != nil { + return nil, err + } + result := &accessListResult{Accesslist: &acl, GasUsed: hexutil.Uint64(gasUsed)} + if vmerr != nil { + result.Error = vmerr.Error() + } + return result, nil +} + +// AccessList creates an access list for the given transaction. +// If the accesslist creation fails an error is returned. +// If the transaction itself fails, an vmErr is returned. +func AccessList(ctx context.Context, b Backend, blockNrOrHash rpc.BlockNumberOrHash, args TransactionArgs) (acl types.AccessList, gasUsed uint64, vmErr error, err error) { + // Retrieve the execution context + db, header, err := b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if db == nil || err != nil { + return nil, 0, nil, err + } + // If the gas amount is not set, extract this as it will depend on access + // lists and we'll need to reestimate every time + nogas := args.Gas == nil + + // Ensure any missing fields are filled, extract the recipient and input data + if err := args.setDefaults(ctx, b); err != nil { + return nil, 0, nil, err + } + var to common.Address + if args.To != nil { + to = *args.To + } else { + to = crypto.CreateAddress(args.from(), uint64(*args.Nonce)) + } + // Retrieve the precompiles since they don't need to be added to the access list + precompiles := vm.ActivePrecompiles(b.ChainConfig().AvalancheRules(header.Number, new(big.Int).SetUint64(header.Time))) + + // Create an initial tracer + prevTracer := vm.NewAccessListTracer(nil, args.from(), to, precompiles) + if args.AccessList != nil { + prevTracer = vm.NewAccessListTracer(*args.AccessList, args.from(), to, precompiles) + } + for { + // Retrieve the current access list to expand + accessList := prevTracer.AccessList() + log.Trace("Creating access list", "input", accessList) + + // If no gas amount was specified, each unique access list needs it's own + // gas calculation. This is quite expensive, but we need to be accurate + // and it's convered by the sender only anyway. + if nogas { + args.Gas = nil + if err := args.setDefaults(ctx, b); err != nil { + return nil, 0, nil, err // shouldn't happen, just in case + } + } + // Copy the original db so we don't modify it + statedb := db.Copy() + // Set the access list tracer to the last al + + args.AccessList = &accessList + msg, err := args.ToMessage(b.RPCGasCap(), header.BaseFee) + if err != nil { + return nil, 0, nil, err + } + + // Apply the transaction with the access list tracer + tracer := vm.NewAccessListTracer(accessList, args.from(), to, precompiles) + config := vm.Config{Tracer: tracer, Debug: true, NoBaseFee: true} + vmenv, _, err := b.GetEVM(ctx, msg, statedb, header, &config) + if err != nil { + return nil, 0, nil, err + } + res, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(msg.Gas())) + if err != nil { + return nil, 0, nil, fmt.Errorf("failed to apply transaction: %v err: %v", args.toTransaction().Hash(), err) + } + if tracer.Equal(prevTracer) { + return accessList, res.UsedGas, res.Err, nil + } + prevTracer = tracer + } +} + +// PublicTransactionPoolAPI exposes methods for the RPC interface +type PublicTransactionPoolAPI struct { + b Backend + nonceLock *AddrLocker + signer types.Signer +} + +// NewPublicTransactionPoolAPI creates a new RPC service with methods specific for the transaction pool. +func NewPublicTransactionPoolAPI(b Backend, nonceLock *AddrLocker) *PublicTransactionPoolAPI { + // The signer used by the API should always be the 'latest' known one because we expect + // signers to be backwards-compatible with old transactions. + signer := types.LatestSigner(b.ChainConfig()) + return &PublicTransactionPoolAPI{b, nonceLock, signer} +} + +// GetBlockTransactionCountByNumber returns the number of transactions in the block with the given block number. +func (s *PublicTransactionPoolAPI) GetBlockTransactionCountByNumber(ctx context.Context, blockNr rpc.BlockNumber) *hexutil.Uint { + if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil { + n := hexutil.Uint(len(block.Transactions())) + return &n + } + return nil +} + +// GetBlockTransactionCountByHash returns the number of transactions in the block with the given hash. +func (s *PublicTransactionPoolAPI) GetBlockTransactionCountByHash(ctx context.Context, blockHash common.Hash) *hexutil.Uint { + if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil { + n := hexutil.Uint(len(block.Transactions())) + return &n + } + return nil +} + +// GetTransactionByBlockNumberAndIndex returns the transaction for the given block number and index. +func (s *PublicTransactionPoolAPI) GetTransactionByBlockNumberAndIndex(ctx context.Context, blockNr rpc.BlockNumber, index hexutil.Uint) *RPCTransaction { + if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil { + return newRPCTransactionFromBlockIndex(block, uint64(index), s.b.ChainConfig()) + } + return nil +} + +// GetTransactionByBlockHashAndIndex returns the transaction for the given block hash and index. +func (s *PublicTransactionPoolAPI) GetTransactionByBlockHashAndIndex(ctx context.Context, blockHash common.Hash, index hexutil.Uint) *RPCTransaction { + if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil { + return newRPCTransactionFromBlockIndex(block, uint64(index), s.b.ChainConfig()) + } + return nil +} + +// GetRawTransactionByBlockNumberAndIndex returns the bytes of the transaction for the given block number and index. +func (s *PublicTransactionPoolAPI) GetRawTransactionByBlockNumberAndIndex(ctx context.Context, blockNr rpc.BlockNumber, index hexutil.Uint) hexutil.Bytes { + if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil { + return newRPCRawTransactionFromBlockIndex(block, uint64(index)) + } + return nil +} + +// GetRawTransactionByBlockHashAndIndex returns the bytes of the transaction for the given block hash and index. +func (s *PublicTransactionPoolAPI) GetRawTransactionByBlockHashAndIndex(ctx context.Context, blockHash common.Hash, index hexutil.Uint) hexutil.Bytes { + if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil { + return newRPCRawTransactionFromBlockIndex(block, uint64(index)) + } + return nil +} + +// GetTransactionCount returns the number of transactions the given address has sent for the given block number +func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (*hexutil.Uint64, error) { + // Ask transaction pool for the nonce which includes pending transactions + if blockNr, ok := blockNrOrHash.Number(); ok && blockNr == rpc.PendingBlockNumber { + nonce, err := s.b.GetPoolNonce(ctx, address) + if err != nil { + return nil, err + } + return (*hexutil.Uint64)(&nonce), nil + } + // Resolve block number and use its state to ask for the nonce + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if state == nil || err != nil { + return nil, err + } + nonce := state.GetNonce(address) + return (*hexutil.Uint64)(&nonce), state.Error() +} + +// GetTransactionByHash returns the transaction for the given hash +func (s *PublicTransactionPoolAPI) GetTransactionByHash(ctx context.Context, hash common.Hash) (*RPCTransaction, error) { + // Try to return an already finalized transaction + tx, blockHash, blockNumber, index, err := s.b.GetTransaction(ctx, hash) + if err != nil { + return nil, err + } + if tx != nil { + header, err := s.b.HeaderByHash(ctx, blockHash) + if err != nil { + return nil, err + } + return newRPCTransaction(tx, blockHash, blockNumber, index, header.BaseFee, s.b.ChainConfig()), nil + } + // No finalized transaction, try to retrieve it from the pool + if tx := s.b.GetPoolTransaction(hash); tx != nil { + estimatedBaseFee, _ := s.b.EstimateBaseFee(ctx) + return newRPCPendingTransaction(tx, s.b.CurrentHeader(), estimatedBaseFee, s.b.ChainConfig()), nil + } + + // Transaction unknown, return as such + return nil, nil +} + +// GetRawTransactionByHash returns the bytes of the transaction for the given hash. +func (s *PublicTransactionPoolAPI) GetRawTransactionByHash(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) { + // Retrieve a finalized transaction, or a pooled otherwise + tx, _, _, _, err := s.b.GetTransaction(ctx, hash) + if err != nil { + return nil, err + } + if tx == nil { + if tx = s.b.GetPoolTransaction(hash); tx == nil { + // Transaction not found anywhere, abort + return nil, nil + } + } + // Serialize to RLP and return + return tx.MarshalBinary() +} + +// GetTransactionReceipt returns the transaction receipt for the given transaction hash. +func (s *PublicTransactionPoolAPI) GetTransactionReceipt(ctx context.Context, hash common.Hash) (map[string]interface{}, error) { + tx, blockHash, blockNumber, index, err := s.b.GetTransaction(ctx, hash) + if err != nil { + return nil, nil + } + header, err := s.b.HeaderByHash(ctx, blockHash) + if err != nil { + return nil, err + } + receipts, err := s.b.GetReceipts(ctx, blockHash) + if err != nil { + return nil, err + } + if len(receipts) <= int(index) { + return nil, nil + } + receipt := receipts[index] + + // Derive the sender. + bigblock := new(big.Int).SetUint64(blockNumber) + timestamp := new(big.Int).SetUint64(header.Time) + signer := types.MakeSigner(s.b.ChainConfig(), bigblock, timestamp) + from, _ := types.Sender(signer, tx) + + fields := map[string]interface{}{ + "blockHash": blockHash, + "blockNumber": hexutil.Uint64(blockNumber), + "transactionHash": hash, + "transactionIndex": hexutil.Uint64(index), + "from": from, + "to": tx.To(), + "gasUsed": hexutil.Uint64(receipt.GasUsed), + "cumulativeGasUsed": hexutil.Uint64(receipt.CumulativeGasUsed), + "contractAddress": nil, + "logs": receipt.Logs, + "logsBloom": receipt.Bloom, + "type": hexutil.Uint(tx.Type()), + } + // Assign the effective gas price paid + if !s.b.ChainConfig().IsSubnetEVM(timestamp) { + fields["effectiveGasPrice"] = hexutil.Uint64(tx.GasPrice().Uint64()) + } else { + header, err := s.b.HeaderByHash(ctx, blockHash) + if err != nil { + return nil, err + } + gasPrice := new(big.Int).Add(header.BaseFee, tx.EffectiveGasTipValue(header.BaseFee)) + fields["effectiveGasPrice"] = hexutil.Uint64(gasPrice.Uint64()) + } + // Assign receipt status or post state. + if len(receipt.PostState) > 0 { + fields["root"] = hexutil.Bytes(receipt.PostState) + } else { + fields["status"] = hexutil.Uint(receipt.Status) + } + if receipt.Logs == nil { + fields["logs"] = [][]*types.Log{} + } + // If the ContractAddress is 20 0x0 bytes, assume it is not a contract creation + if receipt.ContractAddress != (common.Address{}) { + fields["contractAddress"] = receipt.ContractAddress + } + return fields, nil +} + +// sign is a helper function that signs a transaction with the private key of the given address. +func (s *PublicTransactionPoolAPI) sign(addr common.Address, tx *types.Transaction) (*types.Transaction, error) { + // Look up the wallet containing the requested signer + account := accounts.Account{Address: addr} + + wallet, err := s.b.AccountManager().Find(account) + if err != nil { + return nil, err + } + // Request the wallet to sign the transaction + return wallet.SignTx(account, tx, s.b.ChainConfig().ChainID) +} + +// SubmitTransaction is a helper function that submits tx to txPool and logs a message. +func SubmitTransaction(ctx context.Context, b Backend, tx *types.Transaction) (common.Hash, error) { + // If the transaction fee cap is already specified, ensure the + // fee of the given transaction is _reasonable_. + if err := checkTxFee(tx.GasPrice(), tx.Gas(), b.RPCTxFeeCap()); err != nil { + return common.Hash{}, err + } + if !b.UnprotectedAllowed() && !tx.Protected() { + // Ensure only eip155 signed transactions are submitted if EIP155Required is set. + return common.Hash{}, errors.New("only replay-protected (EIP-155) transactions allowed over RPC") + } + if err := b.SendTx(ctx, tx); err != nil { + return common.Hash{}, err + } + // Print a log with full tx details for manual investigations and interventions + currentBlock := b.CurrentBlock() + signer := types.MakeSigner(b.ChainConfig(), currentBlock.Number(), new(big.Int).SetUint64(currentBlock.Time())) + from, err := types.Sender(signer, tx) + if err != nil { + return common.Hash{}, err + } + + if tx.To() == nil { + addr := crypto.CreateAddress(from, tx.Nonce()) + log.Info("Submitted contract creation", "hash", tx.Hash().Hex(), "from", from, "nonce", tx.Nonce(), "contract", addr.Hex(), "value", tx.Value(), "type", tx.Type(), "gasFeeCap", tx.GasFeeCap(), "gasTipCap", tx.GasTipCap(), "gasPrice", tx.GasPrice()) + } else { + log.Info("Submitted transaction", "hash", tx.Hash().Hex(), "from", from, "nonce", tx.Nonce(), "recipient", tx.To(), "value", tx.Value(), "type", tx.Type(), "gasFeeCap", tx.GasFeeCap(), "gasTipCap", tx.GasTipCap(), "gasPrice", tx.GasPrice()) + } + return tx.Hash(), nil +} + +// SendTransaction creates a transaction for the given argument, sign it and submit it to the +// transaction pool. +func (s *PublicTransactionPoolAPI) SendTransaction(ctx context.Context, args TransactionArgs) (common.Hash, error) { + // Look up the wallet containing the requested signer + account := accounts.Account{Address: args.from()} + + wallet, err := s.b.AccountManager().Find(account) + if err != nil { + return common.Hash{}, err + } + + if args.Nonce == nil { + // Hold the addresse's mutex around signing to prevent concurrent assignment of + // the same nonce to multiple accounts. + s.nonceLock.LockAddr(args.from()) + defer s.nonceLock.UnlockAddr(args.from()) + } + + // Set some sanity defaults and terminate on failure + if err := args.setDefaults(ctx, s.b); err != nil { + return common.Hash{}, err + } + // Assemble the transaction and sign with the wallet + tx := args.toTransaction() + + signed, err := wallet.SignTx(account, tx, s.b.ChainConfig().ChainID) + if err != nil { + return common.Hash{}, err + } + return SubmitTransaction(ctx, s.b, signed) +} + +// FillTransaction fills the defaults (nonce, gas, gasPrice or 1559 fields) +// on a given unsigned transaction, and returns it to the caller for further +// processing (signing + broadcast). +func (s *PublicTransactionPoolAPI) FillTransaction(ctx context.Context, args TransactionArgs) (*SignTransactionResult, error) { + // Set some sanity defaults and terminate on failure + if err := args.setDefaults(ctx, s.b); err != nil { + return nil, err + } + // Assemble the transaction and obtain rlp + tx := args.toTransaction() + data, err := tx.MarshalBinary() + if err != nil { + return nil, err + } + return &SignTransactionResult{data, tx}, nil +} + +// SendRawTransaction will add the signed transaction to the transaction pool. +// The sender is responsible for signing the transaction and using the correct nonce. +func (s *PublicTransactionPoolAPI) SendRawTransaction(ctx context.Context, input hexutil.Bytes) (common.Hash, error) { + tx := new(types.Transaction) + if err := tx.UnmarshalBinary(input); err != nil { + return common.Hash{}, err + } + return SubmitTransaction(ctx, s.b, tx) +} + +// Sign calculates an ECDSA signature for: +// keccack256("\x19Ethereum Signed Message:\n" + len(message) + message). +// +// Note, the produced signature conforms to the secp256k1 curve R, S and V values, +// where the V value will be 27 or 28 for legacy reasons. +// +// The account associated with addr must be unlocked. +// +// https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign +func (s *PublicTransactionPoolAPI) Sign(addr common.Address, data hexutil.Bytes) (hexutil.Bytes, error) { + // Look up the wallet containing the requested signer + account := accounts.Account{Address: addr} + + wallet, err := s.b.AccountManager().Find(account) + if err != nil { + return nil, err + } + // Sign the requested hash with the wallet + signature, err := wallet.SignText(account, data) + if err == nil { + signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper + } + return signature, err +} + +// SignTransactionResult represents a RLP encoded signed transaction. +type SignTransactionResult struct { + Raw hexutil.Bytes `json:"raw"` + Tx *types.Transaction `json:"tx"` +} + +// SignTransaction will sign the given transaction with the from account. +// The node needs to have the private key of the account corresponding with +// the given from address and it needs to be unlocked. +func (s *PublicTransactionPoolAPI) SignTransaction(ctx context.Context, args TransactionArgs) (*SignTransactionResult, error) { + if args.Gas == nil { + return nil, fmt.Errorf("gas not specified") + } + if args.GasPrice == nil && (args.MaxPriorityFeePerGas == nil || args.MaxFeePerGas == nil) { + return nil, fmt.Errorf("missing gasPrice or maxFeePerGas/maxPriorityFeePerGas") + } + if args.Nonce == nil { + return nil, fmt.Errorf("nonce not specified") + } + if err := args.setDefaults(ctx, s.b); err != nil { + return nil, err + } + // Before actually sign the transaction, ensure the transaction fee is reasonable. + tx := args.toTransaction() + if err := checkTxFee(tx.GasPrice(), tx.Gas(), s.b.RPCTxFeeCap()); err != nil { + return nil, err + } + signed, err := s.sign(args.from(), tx) + if err != nil { + return nil, err + } + data, err := signed.MarshalBinary() + if err != nil { + return nil, err + } + return &SignTransactionResult{data, signed}, nil +} + +// PendingTransactions returns the transactions that are in the transaction pool +// and have a from address that is one of the accounts this node manages. +func (s *PublicTransactionPoolAPI) PendingTransactions() ([]*RPCTransaction, error) { + pending, err := s.b.GetPoolTransactions() + if err != nil { + return nil, err + } + accounts := make(map[common.Address]struct{}) + for _, wallet := range s.b.AccountManager().Wallets() { + for _, account := range wallet.Accounts() { + accounts[account.Address] = struct{}{} + } + } + curHeader := s.b.CurrentHeader() + transactions := make([]*RPCTransaction, 0, len(pending)) + for _, tx := range pending { + from, _ := types.Sender(s.signer, tx) + if _, exists := accounts[from]; exists { + estimatedBaseFee, _ := s.b.EstimateBaseFee(context.Background()) + transactions = append(transactions, newRPCPendingTransaction(tx, curHeader, estimatedBaseFee, s.b.ChainConfig())) + } + } + return transactions, nil +} + +// Resend accepts an existing transaction and a new gas price and limit. It will remove +// the given transaction from the pool and reinsert it with the new gas price and limit. +func (s *PublicTransactionPoolAPI) Resend(ctx context.Context, sendArgs TransactionArgs, gasPrice *hexutil.Big, gasLimit *hexutil.Uint64) (common.Hash, error) { + if sendArgs.Nonce == nil { + return common.Hash{}, fmt.Errorf("missing transaction nonce in transaction spec") + } + if err := sendArgs.setDefaults(ctx, s.b); err != nil { + return common.Hash{}, err + } + matchTx := sendArgs.toTransaction() + + // Before replacing the old transaction, ensure the _new_ transaction fee is reasonable. + price := matchTx.GasPrice() + if gasPrice != nil { + price = gasPrice.ToInt() + } + gas := matchTx.Gas() + if gasLimit != nil { + gas = uint64(*gasLimit) + } + if err := checkTxFee(price, gas, s.b.RPCTxFeeCap()); err != nil { + return common.Hash{}, err + } + // Iterate the pending list for replacement + pending, err := s.b.GetPoolTransactions() + if err != nil { + return common.Hash{}, err + } + for _, p := range pending { + wantSigHash := s.signer.Hash(matchTx) + pFrom, err := types.Sender(s.signer, p) + if err == nil && pFrom == sendArgs.from() && s.signer.Hash(p) == wantSigHash { + // Match. Re-sign and send the transaction. + if gasPrice != nil && (*big.Int)(gasPrice).Sign() != 0 { + sendArgs.GasPrice = gasPrice + } + if gasLimit != nil && *gasLimit != 0 { + sendArgs.Gas = gasLimit + } + signedTx, err := s.sign(sendArgs.from(), sendArgs.toTransaction()) + if err != nil { + return common.Hash{}, err + } + if err = s.b.SendTx(ctx, signedTx); err != nil { + return common.Hash{}, err + } + return signedTx.Hash(), nil + } + } + return common.Hash{}, fmt.Errorf("transaction %#x not found", matchTx.Hash()) +} + +// PublicDebugAPI is the collection of Ethereum APIs exposed over the public +// debugging endpoint. +type PublicDebugAPI struct { + b Backend +} + +// NewPublicDebugAPI creates a new API definition for the public debug methods +// of the Ethereum service. +func NewPublicDebugAPI(b Backend) *PublicDebugAPI { + return &PublicDebugAPI{b: b} +} + +// GetHeaderRlp retrieves the RLP encoded for of a single header. +func (api *PublicDebugAPI) GetHeaderRlp(ctx context.Context, number uint64) (hexutil.Bytes, error) { + header, _ := api.b.HeaderByNumber(ctx, rpc.BlockNumber(number)) + if header == nil { + return nil, fmt.Errorf("header #%d not found", number) + } + return rlp.EncodeToBytes(header) +} + +// GetBlockRlp retrieves the RLP encoded for of a single block. +func (api *PublicDebugAPI) GetBlockRlp(ctx context.Context, number uint64) (hexutil.Bytes, error) { + block, _ := api.b.BlockByNumber(ctx, rpc.BlockNumber(number)) + if block == nil { + return nil, fmt.Errorf("block #%d not found", number) + } + return rlp.EncodeToBytes(block) +} + +// PrintBlock retrieves a block and returns its pretty printed form. +func (api *PublicDebugAPI) PrintBlock(ctx context.Context, number uint64) (string, error) { + block, _ := api.b.BlockByNumber(ctx, rpc.BlockNumber(number)) + if block == nil { + return "", fmt.Errorf("block #%d not found", number) + } + return spew.Sdump(block), nil +} + +// PrivateDebugAPI is the collection of Ethereum APIs exposed over the private +// debugging endpoint. +type PrivateDebugAPI struct { + b Backend +} + +// NewPrivateDebugAPI creates a new API definition for the private debug methods +// of the Ethereum service. +func NewPrivateDebugAPI(b Backend) *PrivateDebugAPI { + return &PrivateDebugAPI{b: b} +} + +// ChaindbProperty returns leveldb properties of the key-value database. +func (api *PrivateDebugAPI) ChaindbProperty(property string) (string, error) { + if property == "" { + property = "leveldb.stats" + } else if !strings.HasPrefix(property, "leveldb.") { + property = "leveldb." + property + } + return api.b.ChainDb().Stat(property) +} + +// ChaindbCompact flattens the entire key-value database into a single level, +// removing all unused slots and merging all keys. +func (api *PrivateDebugAPI) ChaindbCompact() error { + for b := byte(0); b < 255; b++ { + log.Info("Compacting chain database", "range", fmt.Sprintf("0x%0.2X-0x%0.2X", b, b+1)) + if err := api.b.ChainDb().Compact([]byte{b}, []byte{b + 1}); err != nil { + log.Error("Database compaction failed", "err", err) + return err + } + } + return nil +} + +// PublicNetAPI offers network related RPC methods +type PublicNetAPI struct { + // net *p2p.Server + networkVersion uint64 +} + +// NewPublicNetAPI creates a new net API instance. +func NewPublicNetAPI(networkVersion uint64) *PublicNetAPI { + return &PublicNetAPI{networkVersion} +} + +// Listening returns an indication if the node is listening for network connections. +func (s *PublicNetAPI) Listening() bool { + return true // always listening +} + +// PeerCount returns the number of connected peers +func (s *PublicNetAPI) PeerCount() hexutil.Uint { + return hexutil.Uint(0) +} + +// Version returns the current ethereum protocol version. +func (s *PublicNetAPI) Version() string { + return fmt.Sprintf("%d", s.networkVersion) +} + +// checkTxFee is an internal function used to check whether the fee of +// the given transaction is _reasonable_(under the cap). +func checkTxFee(gasPrice *big.Int, gas uint64, cap float64) error { + // Short circuit if there is no cap for transaction fee at all. + if cap == 0 { + return nil + } + feeEth := new(big.Float).Quo(new(big.Float).SetInt(new(big.Int).Mul(gasPrice, new(big.Int).SetUint64(gas))), new(big.Float).SetInt(big.NewInt(params.Ether))) + feeFloat, _ := feeEth.Float64() + if feeFloat > cap { + return fmt.Errorf("tx fee (%.2f ether) exceeds the configured cap (%.2f ether)", feeFloat, cap) + } + return nil +} + +// toHexSlice creates a slice of hex-strings based on []byte. +func toHexSlice(b [][]byte) []string { + r := make([]string, len(b)) + for i := range b { + r[i] = hexutil.Encode(b[i]) + } + return r +} diff --git a/internal/ethapi/backend.go b/internal/ethapi/backend.go new file mode 100644 index 0000000000..9216c6e547 --- /dev/null +++ b/internal/ethapi/backend.go @@ -0,0 +1,152 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package ethapi implements the general Ethereum API functions. +package ethapi + +import ( + "context" + "math/big" + "time" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/bloombits" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" +) + +// Backend interface provides the common API services (that are provided by +// both full and light clients) with access to necessary functions. +type Backend interface { + // General Ethereum API + EstimateBaseFee(ctx context.Context) (*big.Int, error) + SuggestPrice(ctx context.Context) (*big.Int, error) + SuggestGasTipCap(ctx context.Context) (*big.Int, error) + FeeHistory(ctx context.Context, blockCount int, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (*big.Int, [][]*big.Int, []*big.Int, []float64, error) + ChainDb() ethdb.Database + AccountManager() *accounts.Manager + ExtRPCEnabled() bool + RPCGasCap() uint64 // global gas cap for eth_call over rpc: DoS protection + RPCEVMTimeout() time.Duration // global timeout for eth_call over rpc: DoS protection + RPCTxFeeCap() float64 // global tx fee cap for all transaction related APIs + UnprotectedAllowed() bool // allows only for EIP155 transactions. + + // Blockchain API + HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) + HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) + HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) + CurrentHeader() *types.Header + CurrentBlock() *types.Block + BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) + BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) + BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) + StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) + StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) + GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) + GetTd(ctx context.Context, hash common.Hash) *big.Int + GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header, vmConfig *vm.Config) (*vm.EVM, func() error, error) + SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription + SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription + SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription + + // Transaction pool API + SendTx(ctx context.Context, signedTx *types.Transaction) error + GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) + GetPoolTransactions() (types.Transactions, error) + GetPoolTransaction(txHash common.Hash) *types.Transaction + GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) + Stats() (pending int, queued int) + TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) + TxPoolContentFrom(addr common.Address) (types.Transactions, types.Transactions) + SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription + + // Filter API + BloomStatus() (uint64, uint64) + GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error) + ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) + SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription + SubscribeAcceptedLogsEvent(ch chan<- []*types.Log) event.Subscription + SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription + SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription + + ChainConfig() *params.ChainConfig + Engine() consensus.Engine + LastAcceptedBlock() *types.Block +} + +func GetAPIs(apiBackend Backend) []rpc.API { + nonceLock := new(AddrLocker) + return []rpc.API{ + { + Namespace: "eth", + Version: "1.0", + Service: NewPublicEthereumAPI(apiBackend), + Public: true, + }, { + Namespace: "eth", + Version: "1.0", + Service: NewPublicBlockChainAPI(apiBackend), + Public: true, + }, { + Namespace: "eth", + Version: "1.0", + Service: NewPublicTransactionPoolAPI(apiBackend, nonceLock), + Public: true, + }, { + Namespace: "txpool", + Version: "1.0", + Service: NewPublicTxPoolAPI(apiBackend), + Public: true, + }, { + Namespace: "debug", + Version: "1.0", + Service: NewPublicDebugAPI(apiBackend), + Public: true, + }, { + Namespace: "debug", + Version: "1.0", + Service: NewPrivateDebugAPI(apiBackend), + }, { + Namespace: "eth", + Version: "1.0", + Service: NewPublicAccountAPI(apiBackend.AccountManager()), + Public: true, + }, { + Namespace: "personal", + Version: "1.0", + Service: NewPrivateAccountAPI(apiBackend, nonceLock), + Public: false, + }, + } +} diff --git a/internal/ethapi/transaction_args.go b/internal/ethapi/transaction_args.go new file mode 100644 index 0000000000..40b5e81f65 --- /dev/null +++ b/internal/ethapi/transaction_args.go @@ -0,0 +1,304 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2021 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethapi + +import ( + "bytes" + "context" + "errors" + "fmt" + "math/big" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/log" +) + +// TransactionArgs represents the arguments to construct a new transaction +// or a message call. +type TransactionArgs struct { + From *common.Address `json:"from"` + To *common.Address `json:"to"` + Gas *hexutil.Uint64 `json:"gas"` + GasPrice *hexutil.Big `json:"gasPrice"` + MaxFeePerGas *hexutil.Big `json:"maxFeePerGas"` + MaxPriorityFeePerGas *hexutil.Big `json:"maxPriorityFeePerGas"` + Value *hexutil.Big `json:"value"` + Nonce *hexutil.Uint64 `json:"nonce"` + + // We accept "data" and "input" for backwards-compatibility reasons. + // "input" is the newer name and should be preferred by clients. + // Issue detail: https://github.com/ethereum/go-ethereum/issues/15628 + Data *hexutil.Bytes `json:"data"` + Input *hexutil.Bytes `json:"input"` + + // Introduced by AccessListTxType transaction. + AccessList *types.AccessList `json:"accessList,omitempty"` + ChainID *hexutil.Big `json:"chainId,omitempty"` +} + +// from retrieves the transaction sender address. +func (arg *TransactionArgs) from() common.Address { + if arg.From == nil { + return common.Address{} + } + return *arg.From +} + +// data retrieves the transaction calldata. Input field is preferred. +func (arg *TransactionArgs) data() []byte { + if arg.Input != nil { + return *arg.Input + } + if arg.Data != nil { + return *arg.Data + } + return nil +} + +// setDefaults fills in default values for unspecified tx fields. +func (args *TransactionArgs) setDefaults(ctx context.Context, b Backend) error { + if args.GasPrice != nil && (args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil) { + return errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified") + } + // After london, default to 1559 unless gasPrice is set + head := b.CurrentHeader() + // If user specifies both maxPriorityfee and maxFee, then we do not + // need to consult the chain for defaults. It's definitely a London tx. + if args.MaxPriorityFeePerGas == nil || args.MaxFeePerGas == nil { + // In this clause, user left some fields unspecified. + if args.GasPrice == nil { + if args.MaxPriorityFeePerGas == nil { + tip, err := b.SuggestGasTipCap(ctx) + if err != nil { + return err + } + args.MaxPriorityFeePerGas = (*hexutil.Big)(tip) + } + if args.MaxFeePerGas == nil { + gasFeeCap := new(big.Int).Add( + (*big.Int)(args.MaxPriorityFeePerGas), + new(big.Int).Mul(head.BaseFee, big.NewInt(2)), + ) + args.MaxFeePerGas = (*hexutil.Big)(gasFeeCap) + } + if args.MaxFeePerGas.ToInt().Cmp(args.MaxPriorityFeePerGas.ToInt()) < 0 { + return fmt.Errorf("maxFeePerGas (%v) < maxPriorityFeePerGas (%v)", args.MaxFeePerGas, args.MaxPriorityFeePerGas) + } + } else { + if args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil { + return errors.New("maxFeePerGas or maxPriorityFeePerGas specified but london is not active yet") + } + if args.GasPrice == nil { + price, err := b.SuggestGasTipCap(ctx) + if err != nil { + return err + } + // The legacy tx gas price suggestion should not add 2x base fee + // because all fees are consumed, so it would result in a spiral + // upwards. + price.Add(price, head.BaseFee) + + args.GasPrice = (*hexutil.Big)(price) + } + } + } else { + // Both maxPriorityfee and maxFee set by caller. Sanity-check their internal relation + if args.MaxFeePerGas.ToInt().Cmp(args.MaxPriorityFeePerGas.ToInt()) < 0 { + return fmt.Errorf("maxFeePerGas (%v) < maxPriorityFeePerGas (%v)", args.MaxFeePerGas, args.MaxPriorityFeePerGas) + } + } + if args.Value == nil { + args.Value = new(hexutil.Big) + } + if args.Nonce == nil { + nonce, err := b.GetPoolNonce(ctx, args.from()) + if err != nil { + return err + } + args.Nonce = (*hexutil.Uint64)(&nonce) + } + if args.Data != nil && args.Input != nil && !bytes.Equal(*args.Data, *args.Input) { + return errors.New(`both "data" and "input" are set and not equal. Please use "input" to pass transaction call data`) + } + if args.To == nil && len(args.data()) == 0 { + return errors.New(`contract creation without any data provided`) + } + // Estimate the gas usage if necessary. + if args.Gas == nil { + // These fields are immutable during the estimation, safe to + // pass the pointer directly. + data := args.data() + callArgs := TransactionArgs{ + From: args.From, + To: args.To, + GasPrice: args.GasPrice, + MaxFeePerGas: args.MaxFeePerGas, + MaxPriorityFeePerGas: args.MaxPriorityFeePerGas, + Value: args.Value, + Data: (*hexutil.Bytes)(&data), + AccessList: args.AccessList, + } + pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) + estimated, err := DoEstimateGas(ctx, b, callArgs, pendingBlockNr, b.RPCGasCap()) + if err != nil { + return err + } + args.Gas = &estimated + log.Trace("Estimate gas usage automatically", "gas", args.Gas) + } + if args.ChainID == nil { + id := (*hexutil.Big)(b.ChainConfig().ChainID) + args.ChainID = id + } + return nil +} + +// ToMessage converts the transaction arguments to the Message type used by the +// core evm. This method is used in calls and traces that do not require a real +// live transaction. +func (args *TransactionArgs) ToMessage(globalGasCap uint64, baseFee *big.Int) (types.Message, error) { + // Reject invalid combinations of pre- and post-1559 fee styles + if args.GasPrice != nil && (args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil) { + return types.Message{}, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified") + } + // Set sender address or use zero address if none specified. + addr := args.from() + + // Set default gas & gas price if none were set + gas := globalGasCap + if gas == 0 { + gas = uint64(math.MaxUint64 / 2) + } + if args.Gas != nil { + gas = uint64(*args.Gas) + } + if globalGasCap != 0 && globalGasCap < gas { + log.Warn("Caller gas above allowance, capping", "requested", gas, "cap", globalGasCap) + gas = globalGasCap + } + var ( + gasPrice *big.Int + gasFeeCap *big.Int + gasTipCap *big.Int + ) + if baseFee == nil { + // If there's no basefee, then it must be a non-1559 execution + gasPrice = new(big.Int) + if args.GasPrice != nil { + gasPrice = args.GasPrice.ToInt() + } + gasFeeCap, gasTipCap = gasPrice, gasPrice + } else { + // A basefee is provided, necessitating 1559-type execution + if args.GasPrice != nil { + // User specified the legacy gas field, convert to 1559 gas typing + gasPrice = args.GasPrice.ToInt() + gasFeeCap, gasTipCap = gasPrice, gasPrice + } else { + // User specified 1559 gas feilds (or none), use those + gasFeeCap = new(big.Int) + if args.MaxFeePerGas != nil { + gasFeeCap = args.MaxFeePerGas.ToInt() + } + gasTipCap = new(big.Int) + if args.MaxPriorityFeePerGas != nil { + gasTipCap = args.MaxPriorityFeePerGas.ToInt() + } + // Backfill the legacy gasPrice for EVM execution, unless we're all zeroes + gasPrice = new(big.Int) + if gasFeeCap.BitLen() > 0 || gasTipCap.BitLen() > 0 { + gasPrice = math.BigMin(new(big.Int).Add(gasTipCap, baseFee), gasFeeCap) + } + } + } + value := new(big.Int) + if args.Value != nil { + value = args.Value.ToInt() + } + data := args.data() + var accessList types.AccessList + if args.AccessList != nil { + accessList = *args.AccessList + } + msg := types.NewMessage(addr, args.To, 0, value, gas, gasPrice, gasFeeCap, gasTipCap, data, accessList, true) + return msg, nil +} + +// toTransaction converts the arguments to a transaction. +// This assumes that setDefaults has been called. +func (args *TransactionArgs) toTransaction() *types.Transaction { + var data types.TxData + switch { + case args.MaxFeePerGas != nil: + al := types.AccessList{} + if args.AccessList != nil { + al = *args.AccessList + } + data = &types.DynamicFeeTx{ + To: args.To, + ChainID: (*big.Int)(args.ChainID), + Nonce: uint64(*args.Nonce), + Gas: uint64(*args.Gas), + GasFeeCap: (*big.Int)(args.MaxFeePerGas), + GasTipCap: (*big.Int)(args.MaxPriorityFeePerGas), + Value: (*big.Int)(args.Value), + Data: args.data(), + AccessList: al, + } + case args.AccessList != nil: + data = &types.AccessListTx{ + To: args.To, + ChainID: (*big.Int)(args.ChainID), + Nonce: uint64(*args.Nonce), + Gas: uint64(*args.Gas), + GasPrice: (*big.Int)(args.GasPrice), + Value: (*big.Int)(args.Value), + Data: args.data(), + AccessList: *args.AccessList, + } + default: + data = &types.LegacyTx{ + To: args.To, + Nonce: uint64(*args.Nonce), + Gas: uint64(*args.Gas), + GasPrice: (*big.Int)(args.GasPrice), + Value: (*big.Int)(args.Value), + Data: args.data(), + } + } + return types.NewTx(data) +} + +// ToTransaction converts the arguments to a transaction. +// This assumes that setDefaults has been called. +func (args *TransactionArgs) ToTransaction() *types.Transaction { + return args.toTransaction() +} diff --git a/internal/flags/helpers.go b/internal/flags/helpers.go new file mode 100644 index 0000000000..94c3d0a73f --- /dev/null +++ b/internal/flags/helpers.go @@ -0,0 +1,162 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package flags + +import ( + "os" + "path/filepath" + + "github.com/ethereum/go-ethereum/params" + "gopkg.in/urfave/cli.v1" +) + +var ( + CommandHelpTemplate = `{{.cmd.Name}}{{if .cmd.Subcommands}} command{{end}}{{if .cmd.Flags}} [command options]{{end}} {{.cmd.ArgsUsage}} +{{if .cmd.Description}}{{.cmd.Description}} +{{end}}{{if .cmd.Subcommands}} +SUBCOMMANDS: + {{range .cmd.Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}} + {{end}}{{end}}{{if .categorizedFlags}} +{{range $idx, $categorized := .categorizedFlags}}{{$categorized.Name}} OPTIONS: +{{range $categorized.Flags}}{{"\t"}}{{.}} +{{end}} +{{end}}{{end}}` + + OriginCommandHelpTemplate = `{{.Name}}{{if .Subcommands}} command{{end}}{{if .Flags}} [command options]{{end}} {{.ArgsUsage}} +{{if .Description}}{{.Description}} +{{end}}{{if .Subcommands}} +SUBCOMMANDS: + {{range .Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}} + {{end}}{{end}}{{if .Flags}} +OPTIONS: +{{range $.Flags}} {{.}} +{{end}} +{{end}}` + + // AppHelpTemplate is the test template for the default, global app help topic. + AppHelpTemplate = `NAME: + {{.App.Name}} - {{.App.Usage}} + + Copyright 2013-2021 The go-ethereum Authors + +USAGE: + {{.App.HelpName}} [options]{{if .App.Commands}} [command] [command options]{{end}} {{if .App.ArgsUsage}}{{.App.ArgsUsage}}{{else}}[arguments...]{{end}} + {{if .App.Version}} +VERSION: + {{.App.Version}} + {{end}}{{if len .App.Authors}} +AUTHOR(S): + {{range .App.Authors}}{{ . }}{{end}} + {{end}}{{if .App.Commands}} +COMMANDS: + {{range .App.Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}} + {{end}}{{end}}{{if .FlagGroups}} +{{range .FlagGroups}}{{.Name}} OPTIONS: + {{range .Flags}}{{.}} + {{end}} +{{end}}{{end}}{{if .App.Copyright }} +COPYRIGHT: + {{.App.Copyright}} + {{end}} +` + // ClefAppHelpTemplate is the template for the default, global app help topic. + ClefAppHelpTemplate = `NAME: + {{.App.Name}} - {{.App.Usage}} + + Copyright 2013-2021 The go-ethereum Authors + +USAGE: + {{.App.HelpName}} [options]{{if .App.Commands}} command [command options]{{end}} {{if .App.ArgsUsage}}{{.App.ArgsUsage}}{{else}}[arguments...]{{end}} + {{if .App.Version}} +COMMANDS: + {{range .App.Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}} + {{end}}{{end}}{{if .FlagGroups}} +{{range .FlagGroups}}{{.Name}} OPTIONS: + {{range .Flags}}{{.}} + {{end}} +{{end}}{{end}}{{if .App.Copyright }} +COPYRIGHT: + {{.App.Copyright}} + {{end}} +` +) + +// HelpData is a one shot struct to pass to the usage template +type HelpData struct { + App interface{} + FlagGroups []FlagGroup +} + +// FlagGroup is a collection of flags belonging to a single topic. +type FlagGroup struct { + Name string + Flags []cli.Flag +} + +// byCategory sorts an array of FlagGroup by Name in the order +// defined in AppHelpFlagGroups. +type ByCategory []FlagGroup + +func (a ByCategory) Len() int { return len(a) } +func (a ByCategory) Swap(i, j int) { a[i], a[j] = a[j], a[i] } +func (a ByCategory) Less(i, j int) bool { + iCat, jCat := a[i].Name, a[j].Name + iIdx, jIdx := len(a), len(a) // ensure non categorized flags come last + + for i, group := range a { + if iCat == group.Name { + iIdx = i + } + if jCat == group.Name { + jIdx = i + } + } + + return iIdx < jIdx +} + +func FlagCategory(flag cli.Flag, flagGroups []FlagGroup) string { + for _, category := range flagGroups { + for _, flg := range category.Flags { + if flg.GetName() == flag.GetName() { + return category.Name + } + } + } + return "MISC" +} + +// NewApp creates an app with sane defaults. +func NewApp(gitCommit, gitDate, usage string) *cli.App { + app := cli.NewApp() + app.Name = filepath.Base(os.Args[0]) + app.Author = "" + app.Email = "" + app.Version = params.VersionWithCommit(gitCommit, gitDate) + app.Usage = usage + return app +} diff --git a/metrics/prometheus/prometheus.go b/metrics/prometheus/prometheus.go new file mode 100644 index 0000000000..576a3786c6 --- /dev/null +++ b/metrics/prometheus/prometheus.go @@ -0,0 +1,187 @@ +// (c) 2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package prometheus + +import ( + "sort" + "strings" + + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + + "github.com/prometheus/client_golang/prometheus" + + dto "github.com/prometheus/client_model/go" +) + +var ( + pv = []float64{.5, .75, .95, .99, .999, .9999} + pvShortPercent = []float64{50, 95, 99} + pvShort = []float64{.50, .95, .99} +) + +type gatherer struct { + reg metrics.Registry +} + +func (g gatherer) Gather() ([]*dto.MetricFamily, error) { + // Gather and pre-sort the metrics to avoid random listings + var names []string + g.reg.Each(func(name string, i interface{}) { + names = append(names, name) + }) + sort.Strings(names) + + mfs := make([]*dto.MetricFamily, 0, len(names)) + for _, name := range names { + mIntf := g.reg.Get(name) + name := strings.Replace(name, "/", "_", -1) + + switch m := mIntf.(type) { + case metrics.Counter: + val := m.Snapshot().Count() + valFloat := float64(val) + mfs = append(mfs, &dto.MetricFamily{ + Name: &name, + Type: dto.MetricType_COUNTER.Enum(), + Metric: []*dto.Metric{{ + Counter: &dto.Counter{ + Value: &valFloat, + }, + }}, + }) + case metrics.Gauge: + val := m.Snapshot().Value() + valFloat := float64(val) + mfs = append(mfs, &dto.MetricFamily{ + Name: &name, + Type: dto.MetricType_GAUGE.Enum(), + Metric: []*dto.Metric{{ + Gauge: &dto.Gauge{ + Value: &valFloat, + }, + }}, + }) + case metrics.GaugeFloat64: + val := m.Snapshot().Value() + mfs = append(mfs, &dto.MetricFamily{ + Name: &name, + Type: dto.MetricType_GAUGE.Enum(), + Metric: []*dto.Metric{{ + Gauge: &dto.Gauge{ + Value: &val, + }, + }}, + }) + case metrics.Histogram: + snapshot := m.Snapshot() + count := snapshot.Count() + countUint := uint64(count) + sum := snapshot.Sum() + sumFloat := float64(sum) + + ps := m.Percentiles(pv) + qs := make([]*dto.Quantile, len(pv)) + for i := range ps { + v := pv[i] + s := ps[i] + qs[i] = &dto.Quantile{ + Quantile: &v, + Value: &s, + } + } + + mfs = append(mfs, &dto.MetricFamily{ + Name: &name, + Type: dto.MetricType_SUMMARY.Enum(), + Metric: []*dto.Metric{{ + Summary: &dto.Summary{ + SampleCount: &countUint, + SampleSum: &sumFloat, + Quantile: qs, + }, + }}, + }) + case metrics.Meter: + val := m.Snapshot().Count() + valFloat := float64(val) + mfs = append(mfs, &dto.MetricFamily{ + Name: &name, + Type: dto.MetricType_GAUGE.Enum(), + Metric: []*dto.Metric{{ + Gauge: &dto.Gauge{ + Value: &valFloat, + }, + }}, + }) + case metrics.Timer: + snapshot := m.Snapshot() + count := snapshot.Count() + countUint := uint64(count) + sum := snapshot.Sum() + sumFloat := float64(sum) + + ps := m.Percentiles(pv) + qs := make([]*dto.Quantile, len(pv)) + for i := range ps { + v := pv[i] + s := ps[i] + qs[i] = &dto.Quantile{ + Quantile: &v, + Value: &s, + } + } + + mfs = append(mfs, &dto.MetricFamily{ + Name: &name, + Type: dto.MetricType_SUMMARY.Enum(), + Metric: []*dto.Metric{{ + Summary: &dto.Summary{ + SampleCount: &countUint, + SampleSum: &sumFloat, + Quantile: qs, + }, + }}, + }) + case metrics.ResettingTimer: + snapshot := m.Snapshot() + + vals := snapshot.Values() + count := uint64(len(vals)) + if count == 0 { + continue + } + + ps := m.Percentiles(pvShortPercent) + qs := make([]*dto.Quantile, len(pv)) + for i := range pvShort { + v := pv[i] + s := float64(ps[i]) + qs[i] = &dto.Quantile{ + Quantile: &v, + Value: &s, + } + } + + mfs = append(mfs, &dto.MetricFamily{ + Name: &name, + Type: dto.MetricType_SUMMARY.Enum(), + Metric: []*dto.Metric{{ + Summary: &dto.Summary{ + SampleCount: &count, + // TODO: do we need to specify SampleSum here? and if so + // what should that be? + Quantile: qs, + }, + }}, + }) + } + } + log.Error("called", "names", names, "mfs", mfs) + return mfs, nil +} + +func Gatherer(reg metrics.Registry) prometheus.Gatherer { + return gatherer{reg: reg} +} diff --git a/miner/miner.go b/miner/miner.go new file mode 100644 index 0000000000..a2786724e4 --- /dev/null +++ b/miner/miner.go @@ -0,0 +1,73 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package miner implements Ethereum block creation and mining. +package miner + +import ( + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" +) + +// Backend wraps all methods required for mining. +type Backend interface { + BlockChain() *core.BlockChain + TxPool() *core.TxPool +} + +// Config is the configuration parameters of mining. +type Config struct { + Etherbase common.Address `toml:",omitempty"` // Public address for block mining rewards (default = first account) +} + +type Miner struct { + worker *worker +} + +func New(eth Backend, config *Config, chainConfig *params.ChainConfig, mux *event.TypeMux, engine consensus.Engine, clock *mockable.Clock) *Miner { + return &Miner{ + worker: newWorker(config, chainConfig, engine, eth, mux, clock), + } +} + +func (miner *Miner) SetEtherbase(addr common.Address) { + miner.worker.setEtherbase(addr) +} + +func (miner *Miner) GenerateBlock() (*types.Block, error) { + return miner.worker.commitNewWork() +} + +// SubscribePendingLogs starts delivering logs from pending transactions +// to the given channel. +func (miner *Miner) SubscribePendingLogs(ch chan<- []*types.Log) event.Subscription { + return miner.worker.pendingLogsFeed.Subscribe(ch) +} diff --git a/miner/worker.go b/miner/worker.go new file mode 100644 index 0000000000..1b1543ae03 --- /dev/null +++ b/miner/worker.go @@ -0,0 +1,354 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . +// +// NOTE: this piece of code is modified by Ted Yin. +// The modification is also licensed under the same LGPL. + +package miner + +import ( + "errors" + "fmt" + "math/big" + "sync" + "time" + + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/subnet-evm/consensus" + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/log" +) + +// environment is the worker's current environment and holds all of the current state information. +type environment struct { + signer types.Signer + + state *state.StateDB // apply state changes here + tcount int // tx count in cycle + gasPool *core.GasPool // available gas used to pack transactions + + parent *types.Header + header *types.Header + txs []*types.Transaction + receipts []*types.Receipt + + start time.Time // Time that block building began +} + +// worker is the main object which takes care of submitting new work to consensus engine +// and gathering the sealing result. +type worker struct { + config *Config + chainConfig *params.ChainConfig + engine consensus.Engine + eth Backend + chain *core.BlockChain + + // Feeds + // TODO remove since this will never be written to + pendingLogsFeed event.Feed + + // Subscriptions + mux *event.TypeMux // TODO replace + mu sync.RWMutex // The lock used to protect the coinbase and extra fields + coinbase common.Address + clock *mockable.Clock // Allows us mock the clock for testing +} + +func newWorker(config *Config, chainConfig *params.ChainConfig, engine consensus.Engine, eth Backend, mux *event.TypeMux, clock *mockable.Clock) *worker { + worker := &worker{ + config: config, + chainConfig: chainConfig, + engine: engine, + eth: eth, + mux: mux, + chain: eth.BlockChain(), + clock: clock, + } + + return worker +} + +// setEtherbase sets the etherbase used to initialize the block coinbase field. +func (w *worker) setEtherbase(addr common.Address) { + w.mu.Lock() + defer w.mu.Unlock() + w.coinbase = addr +} + +// commitNewWork generates several new sealing tasks based on the parent block. +func (w *worker) commitNewWork() (*types.Block, error) { + w.mu.RLock() + defer w.mu.RUnlock() + + tstart := w.clock.Time() + timestamp := tstart.Unix() + parent := w.chain.CurrentBlock() + // Note: in order to support asynchronous block production, blocks are allowed to have + // the same timestamp as their parent. This allows more than one block to be produced + // per second. + if parent.Time() >= uint64(timestamp) { + timestamp = int64(parent.Time()) + } + + var gasLimit uint64 + configuredGasLimit := w.chainConfig.GetFeeConfig().GasLimit.Uint64() + if w.chainConfig.IsSubnetEVM(big.NewInt(timestamp)) { + gasLimit = configuredGasLimit + } else { + // The gas limit is set in SubnetEVMGasLimit because the ceiling and floor were set to the same value + // such that the gas limit converged to it. Since this is hardbaked now, we remove the ability to configure it. + gasLimit = core.CalcGasLimit(parent.GasUsed(), parent.GasLimit(), configuredGasLimit, configuredGasLimit) + } + + num := parent.Number() + + header := &types.Header{ + ParentHash: parent.Hash(), + Number: num.Add(num, common.Big1), + GasLimit: gasLimit, + Extra: nil, + Time: uint64(timestamp), + } + + bigTimestamp := big.NewInt(timestamp) + if w.chainConfig.IsSubnetEVM(bigTimestamp) { + var err error + header.Extra, header.BaseFee, err = dummy.CalcBaseFee(w.chainConfig, parent.Header(), uint64(timestamp)) + if err != nil { + return nil, fmt.Errorf("failed to calculate new base fee: %w", err) + } + } + + if w.coinbase == (common.Address{}) { + return nil, errors.New("cannot mine without etherbase") + } + header.Coinbase = w.coinbase + if err := w.engine.Prepare(w.chain, header); err != nil { + return nil, fmt.Errorf("failed to prepare header for mining: %w", err) + } + + env, err := w.createCurrentEnvironment(parent, header, tstart) + if err != nil { + return nil, fmt.Errorf("failed to create new current environment: %w", err) + } + + // Fill the block with all available pending transactions. + pending := w.eth.TxPool().Pending(true) + + // Split the pending transactions into locals and remotes + localTxs := make(map[common.Address]types.Transactions) + remoteTxs := pending + for _, account := range w.eth.TxPool().Locals() { + if txs := remoteTxs[account]; len(txs) > 0 { + delete(remoteTxs, account) + localTxs[account] = txs + } + } + if len(localTxs) > 0 { + txs := types.NewTransactionsByPriceAndNonce(env.signer, localTxs, header.BaseFee) + w.commitTransactions(env, txs, w.coinbase) + } + if len(remoteTxs) > 0 { + txs := types.NewTransactionsByPriceAndNonce(env.signer, remoteTxs, header.BaseFee) + w.commitTransactions(env, txs, w.coinbase) + } + + return w.commit(env) +} + +func (w *worker) createCurrentEnvironment(parent *types.Block, header *types.Header, tstart time.Time) (*environment, error) { + state, err := w.chain.StateAt(parent.Root()) + if err != nil { + return nil, err + } + return &environment{ + signer: types.MakeSigner(w.chainConfig, header.Number, new(big.Int).SetUint64(header.Time)), + state: state, + parent: parent.Header(), + header: header, + tcount: 0, + gasPool: new(core.GasPool).AddGas(header.GasLimit), + start: tstart, + }, nil +} + +func (w *worker) commitTransaction(env *environment, tx *types.Transaction, coinbase common.Address) ([]*types.Log, error) { + snap := env.state.Snapshot() + + receipt, err := core.ApplyTransaction(w.chainConfig, w.chain, &coinbase, env.gasPool, env.state, env.header, tx, &env.header.GasUsed, *w.chain.GetVMConfig()) + if err != nil { + env.state.RevertToSnapshot(snap) + return nil, err + } + env.txs = append(env.txs, tx) + env.receipts = append(env.receipts, receipt) + + return receipt.Logs, nil +} + +func (w *worker) commitTransactions(env *environment, txs *types.TransactionsByPriceAndNonce, coinbase common.Address) { + for { + // If we don't have enough gas for any further transactions then we're done + if env.gasPool.Gas() < params.TxGas { + log.Trace("Not enough gas for further transactions", "have", env.gasPool, "want", params.TxGas) + break + } + // Retrieve the next transaction and abort if all done + tx := txs.Peek() + if tx == nil { + break + } + // Error may be ignored here. The error has already been checked + // during transaction acceptance is the transaction pool. + // + // We use the eip155 signer regardless of the current hf. + from, _ := types.Sender(env.signer, tx) + // Check whether the tx is replay protected. If we're not in the EIP155 hf + // phase, start ignoring the sender until we do. + if tx.Protected() && !w.chainConfig.IsEIP155(env.header.Number) { + log.Trace("Ignoring reply protected transaction", "hash", tx.Hash(), "eip155", w.chainConfig.EIP155Block) + + txs.Pop() + continue + } + // Start executing the transaction + env.state.Prepare(tx.Hash(), env.tcount) + + _, err := w.commitTransaction(env, tx, coinbase) + switch { + case errors.Is(err, core.ErrGasLimitReached): + // Pop the current out-of-gas transaction without shifting in the next from the account + log.Trace("Gas limit exceeded for current block", "sender", from) + txs.Pop() + + case errors.Is(err, core.ErrNonceTooLow): + // New head notification data race between the transaction pool and miner, shift + log.Trace("Skipping transaction with low nonce", "sender", from, "nonce", tx.Nonce()) + txs.Shift() + + case errors.Is(err, core.ErrNonceTooHigh): + // Reorg notification data race between the transaction pool and miner, skip account = + log.Trace("Skipping account with high nonce", "sender", from, "nonce", tx.Nonce()) + txs.Pop() + + case errors.Is(err, nil): + env.tcount++ + txs.Shift() + + case errors.Is(err, core.ErrTxTypeNotSupported): + // Pop the unsupported transaction without shifting in the next from the account + log.Trace("Skipping unsupported transaction type", "sender", from, "type", tx.Type()) + txs.Pop() + + default: + // Strange error, discard the transaction and get the next in line (note, the + // nonce-too-high clause will prevent us from executing in vain). + log.Debug("Transaction failed, account skipped", "hash", tx.Hash(), "err", err) + txs.Shift() + } + } +} + +// commit runs any post-transaction state modifications, assembles the final block +// and commits new work if consensus engine is running. +func (w *worker) commit(env *environment) (*types.Block, error) { + // Deep copy receipts here to avoid interaction between different tasks. + receipts := copyReceipts(env.receipts) + block, err := w.engine.FinalizeAndAssemble(w.chain, env.header, env.parent, env.state, env.txs, nil, receipts) + if err != nil { + return nil, err + } + + return w.handleResult(env, block, time.Now(), receipts) +} + +func (w *worker) handleResult(env *environment, block *types.Block, createdAt time.Time, unfinishedReceipts []*types.Receipt) (*types.Block, error) { + // Short circuit when receiving duplicate result caused by resubmitting. + if w.chain.HasBlock(block.Hash(), block.NumberU64()) { + return nil, fmt.Errorf("produced duplicate block (Hash: %s, Number %d)", block.Hash(), block.NumberU64()) + } + // Different block could share same sealhash, deep copy here to prevent write-write conflict. + var ( + hash = block.Hash() + receipts = make([]*types.Receipt, len(unfinishedReceipts)) + logs []*types.Log + ) + for i, unfinishedReceipt := range unfinishedReceipts { + receipt := new(types.Receipt) + receipts[i] = receipt + *receipt = *unfinishedReceipt + + // add block location fields + receipt.BlockHash = hash + receipt.BlockNumber = block.Number() + receipt.TransactionIndex = uint(i) + + // Update the block hash in all logs since it is now available and not when the + // receipt/log of individual transactions were created. + receipt.Logs = make([]*types.Log, len(unfinishedReceipt.Logs)) + for j, unfinishedLog := range unfinishedReceipt.Logs { + log := new(types.Log) + receipt.Logs[j] = log + *log = *unfinishedLog + log.BlockHash = hash + } + logs = append(logs, receipt.Logs...) + } + + log.Info("Commit new mining work", "number", block.Number(), "hash", hash, "uncles", 0, "txs", env.tcount, + "gas", block.GasUsed(), "fees", totalFees(block, receipts), "elapsed", common.PrettyDuration(time.Since(env.start))) + + // Note: the miner no longer emits a NewMinedBlock event. Instead the caller + // is responsible for running any additional verification and then inserting + // the block with InsertChain, which will also emit a new head event. + return block, nil +} + +// copyReceipts makes a deep copy of the given receipts. +func copyReceipts(receipts []*types.Receipt) []*types.Receipt { + result := make([]*types.Receipt, len(receipts)) + for i, l := range receipts { + cpy := *l + result[i] = &cpy + } + return result +} + +// totalFees computes total consumed fees in ETH. Block transactions and receipts have to have the same order. +func totalFees(block *types.Block, receipts []*types.Receipt) *big.Float { + feesWei := new(big.Int) + for i, tx := range block.Transactions() { + feesWei.Add(feesWei, new(big.Int).Mul(new(big.Int).SetUint64(receipts[i].GasUsed), tx.GasPrice())) + } + return new(big.Float).Quo(new(big.Float).SetInt(feesWei), new(big.Float).SetInt(big.NewInt(params.Ether))) +} diff --git a/node/api.go b/node/api.go new file mode 100644 index 0000000000..62cedee70f --- /dev/null +++ b/node/api.go @@ -0,0 +1,66 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package node + +import ( + "github.com/ava-labs/subnet-evm/internal/debug" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" +) + +// apis returns the collection of built-in RPC APIs. +func (n *Node) apis() []rpc.API { + return []rpc.API{ + { + Namespace: "debug", + Version: "1.0", + Service: debug.Handler, + }, { + Namespace: "web3", + Version: "1.0", + Service: &publicWeb3API{n}, + Public: true, + }, + } +} + +// publicWeb3API offers helper utils +type publicWeb3API struct { + stack *Node +} + +// ClientVersion returns the node name +func (s *publicWeb3API) ClientVersion() string { + return s.stack.config.SubnetEVMVersion +} + +// Sha3 applies the ethereum sha3 implementation on the input. +// It assumes the input is hex encoded. +func (s *publicWeb3API) Sha3(input hexutil.Bytes) hexutil.Bytes { + return crypto.Keccak256(input) +} diff --git a/node/config.go b/node/config.go new file mode 100644 index 0000000000..e572e8982a --- /dev/null +++ b/node/config.go @@ -0,0 +1,246 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package node + +import ( + "fmt" + "io/ioutil" + "os" + "path/filepath" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/accounts/external" + "github.com/ava-labs/subnet-evm/accounts/keystore" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/log" +) + +// Config represents a small collection of configuration values to fine tune the +// P2P network layer of a protocol stack. These values can be further extended by +// all registered services. +type Config struct { + // KeyStoreDir is the file system folder that contains private keys. The directory can + // be specified as a relative path, in which case it is resolved relative to the + // current directory. + // + // If KeyStoreDir is empty, the default location is the "keystore" subdirectory of + // DataDir. If DataDir is unspecified and KeyStoreDir is empty, an ephemeral directory + // is created by New and destroyed when the node is stopped. + KeyStoreDir string `toml:",omitempty"` + + // ExternalSigner specifies an external URI for a clef-type signer + ExternalSigner string `toml:",omitempty"` + + // UseLightweightKDF lowers the memory and CPU requirements of the key store + // scrypt KDF at the expense of security. + UseLightweightKDF bool `toml:",omitempty"` + + // InsecureUnlockAllowed allows user to unlock accounts in unsafe http environment. + InsecureUnlockAllowed bool `toml:",omitempty"` + + // HTTPHost is the host interface on which to start the HTTP RPC server. If this + // field is empty, no HTTP API endpoint will be started. + HTTPHost string + + // HTTPPort is the TCP port number on which to start the HTTP RPC server. The + // default zero value is/ valid and will pick a port number randomly (useful + // for ephemeral nodes). + HTTPPort int `toml:",omitempty"` + + // HTTPCors is the Cross-Origin Resource Sharing header to send to requesting + // clients. Please be aware that CORS is a browser enforced security, it's fully + // useless for custom HTTP clients. + HTTPCors []string `toml:",omitempty"` + + // HTTPVirtualHosts is the list of virtual hostnames which are allowed on incoming requests. + // This is by default {'localhost'}. Using this prevents attacks like + // DNS rebinding, which bypasses SOP by simply masquerading as being within the same + // origin. These attacks do not utilize CORS, since they are not cross-domain. + // By explicitly checking the Host-header, the server will not allow requests + // made against the server with a malicious host domain. + // Requests using ip address directly are not affected + HTTPVirtualHosts []string `toml:",omitempty"` + + // HTTPModules is a list of API modules to expose via the HTTP RPC interface. + // If the module list is empty, all RPC API endpoints designated public will be + // exposed. + HTTPModules []string + + // HTTPTimeouts allows for customization of the timeout values used by the HTTP RPC + // interface. + HTTPTimeouts rpc.HTTPTimeouts + + // WSHost is the host interface on which to start the websocket RPC server. If + // this field is empty, no websocket API endpoint will be started. + WSHost string + + // WSPort is the TCP port number on which to start the websocket RPC server. The + // default zero value is/ valid and will pick a port number randomly (useful for + // ephemeral nodes). + WSPort int `toml:",omitempty"` + + // WSOrigins is the list of domain to accept websocket requests from. Please be + // aware that the server can only act upon the HTTP request the client sends and + // cannot verify the validity of the request header. + WSOrigins []string `toml:",omitempty"` + + // WSModules is a list of API modules to expose via the websocket RPC interface. + // If the module list is empty, all RPC API endpoints designated public will be + // exposed. + WSModules []string + + // WSExposeAll exposes all API modules via the WebSocket RPC interface rather + // than just the public ones. + // + // *WARNING* Only set this if the node is running in a trusted network, exposing + // private APIs to untrusted users is a major security risk. + WSExposeAll bool `toml:",omitempty"` + + // GraphQLCors is the Cross-Origin Resource Sharing header to send to requesting + // clients. Please be aware that CORS is a browser enforced security, it's fully + // useless for custom HTTP clients. + GraphQLCors []string `toml:",omitempty"` + + // GraphQLVirtualHosts is the list of virtual hostnames which are allowed on incoming requests. + // This is by default {'localhost'}. Using this prevents attacks like + // DNS rebinding, which bypasses SOP by simply masquerading as being within the same + // origin. These attacks do not utilize CORS, since they are not cross-domain. + // By explicitly checking the Host-header, the server will not allow requests + // made against the server with a malicious host domain. + // Requests using ip address directly are not affected + GraphQLVirtualHosts []string `toml:",omitempty"` + + SubnetEVMVersion string +} + +// HTTPEndpoint resolves an HTTP endpoint based on the configured host interface +// and port parameters. +func (c *Config) HTTPEndpoint() string { + if c.HTTPHost == "" { + return "" + } + return fmt.Sprintf("%s:%d", c.HTTPHost, c.HTTPPort) +} + +// DefaultHTTPEndpoint returns the HTTP endpoint used by default. +func DefaultHTTPEndpoint() string { + config := &Config{HTTPHost: DefaultHTTPHost, HTTPPort: DefaultHTTPPort} + return config.HTTPEndpoint() +} + +// WSEndpoint resolves a websocket endpoint based on the configured host interface +// and port parameters. +func (c *Config) WSEndpoint() string { + if c.WSHost == "" { + return "" + } + return fmt.Sprintf("%s:%d", c.WSHost, c.WSPort) +} + +// DefaultWSEndpoint returns the websocket endpoint used by default. +func DefaultWSEndpoint() string { + config := &Config{WSHost: DefaultWSHost, WSPort: DefaultWSPort} + return config.WSEndpoint() +} + +// ExtRPCEnabled returns the indicator whether node enables the external +// RPC(http, ws or graphql). +func (c *Config) ExtRPCEnabled() bool { + return c.HTTPHost != "" || c.WSHost != "" +} + +// KeyDirConfig determines the settings for keydirectory +func (c *Config) KeyDirConfig() (string, error) { + var ( + keydir string + err error + ) + switch { + case filepath.IsAbs(c.KeyStoreDir): + keydir = c.KeyStoreDir + case c.KeyStoreDir != "": + keydir, err = filepath.Abs(c.KeyStoreDir) + } + return keydir, err +} + +// getKeyStoreDir retrieves the key directory and will create +// and ephemeral one if necessary. +func getKeyStoreDir(conf *Config) (string, bool, error) { + keydir, err := conf.KeyDirConfig() + if err != nil { + return "", false, err + } + isEphemeral := false + if keydir == "" { + // There is no datadir. + keydir, err = ioutil.TempDir("", "subnet-evm-keystore") + isEphemeral = true + } + + if err != nil { + return "", false, err + } + if err := os.MkdirAll(keydir, 0700); err != nil { + return "", false, err + } + + return keydir, isEphemeral, nil +} + +func makeAccountManager(conf *Config) (*accounts.Manager, error) { + scryptN := keystore.StandardScryptN + scryptP := keystore.StandardScryptP + if conf.UseLightweightKDF { + scryptN = keystore.LightScryptN + scryptP = keystore.LightScryptP + } + + keydir, _, err := getKeyStoreDir(conf) + if err != nil { + return nil, err + } + // Assemble the account manager and supported backends + var backends []accounts.Backend + if len(conf.ExternalSigner) > 0 { + log.Info("Using external signer", "url", conf.ExternalSigner) + if extapi, err := external.NewExternalBackend(conf.ExternalSigner); err == nil { + backends = append(backends, extapi) + } else { + return nil, fmt.Errorf("error connecting to external signer: %v", err) + } + } + if len(backends) == 0 { + // For now, we're using EITHER external signer OR local signers. + // If/when we implement some form of lockfile for USB and keystore wallets, + // we can have both, but it's very confusing for the user to see the same + // accounts in both externally and locally, plus very racey. + backends = append(backends, keystore.NewKeyStore(keydir, scryptN, scryptP)) + } + + return accounts.NewManager(&accounts.Config{InsecureUnlockAllowed: conf.InsecureUnlockAllowed}, backends...), nil +} diff --git a/node/defaults.go b/node/defaults.go new file mode 100644 index 0000000000..b196f9ebfa --- /dev/null +++ b/node/defaults.go @@ -0,0 +1,51 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package node + +import ( + "github.com/ava-labs/subnet-evm/rpc" +) + +const ( + DefaultHTTPHost = "localhost" // Default host interface for the HTTP RPC server + DefaultHTTPPort = 8545 // Default TCP port for the HTTP RPC server + DefaultWSHost = "localhost" // Default host interface for the websocket RPC server + DefaultWSPort = 8546 // Default TCP port for the websocket RPC server + DefaultGraphQLHost = "localhost" // Default host interface for the GraphQL server + DefaultGraphQLPort = 8547 // Default TCP port for the GraphQL server +) + +// DefaultConfig contains reasonable default settings. +var DefaultConfig = Config{ + HTTPPort: DefaultHTTPPort, + HTTPModules: []string{"net", "web3"}, + HTTPVirtualHosts: []string{"localhost"}, + HTTPTimeouts: rpc.DefaultHTTPTimeouts, + WSPort: DefaultWSPort, + WSModules: []string{"net", "web3"}, + GraphQLVirtualHosts: []string{"localhost"}, +} diff --git a/node/errors.go b/node/errors.go new file mode 100644 index 0000000000..ede809cacd --- /dev/null +++ b/node/errors.go @@ -0,0 +1,35 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package node + +import ( + "errors" +) + +var ( + ErrNodeStopped = errors.New("node not started") +) diff --git a/node/node.go b/node/node.go new file mode 100644 index 0000000000..3d6de8ce91 --- /dev/null +++ b/node/node.go @@ -0,0 +1,133 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package node + +import ( + "sync" + + "github.com/ava-labs/subnet-evm/accounts" + "github.com/ava-labs/subnet-evm/rpc" + "github.com/ethereum/go-ethereum/event" +) + +// Node is a container on which services can be registered. +type Node struct { + eventmux *event.TypeMux + config *Config + accman *accounts.Manager + // log log.Logger + // ephemKeystore string // if non-empty, the key directory that will be removed by Stop + // dirLock fileutil.Releaser // prevents concurrent use of instance directory + // stop chan struct{} // Channel to wait for termination notifications + // server *p2p.Server // Currently running P2P networking layer + // startStopLock sync.Mutex // Start/Stop are protected by an additional lock + // state int // Tracks state of node lifecycle + + lock sync.Mutex + rpcAPIs []rpc.API // List of APIs currently provided by the node + // inprocHandler *rpc.Server // In-process RPC request handler to process the API requests + + // databases map[*closeTrackingDB]struct{} // All open databases + + subnetEVMVersion string +} + +// const ( +// initializingState = iota +// closedState +// ) + +// func (n *Node) openDataDir() error { +// if n.config.DataDir == "" { +// return nil // ephemeral +// } +// +// instdir := filepath.Join(n.config.DataDir, n.config.name()) +// if err := os.MkdirAll(instdir, 0700); err != nil { +// return err +// } +// // Lock the instance directory to prevent concurrent use by another instance as well as +// // accidental use of the instance directory as a database. +// release, _, err := fileutil.Flock(filepath.Join(instdir, "LOCK")) +// if err != nil { +// return convertFileLockError(err) +// } +// n.dirLock = release +// return nil +// } + +// New creates a new P2P node, ready for protocol registration. +func New(conf *Config) (*Node, error) { + // Copy config and resolve the datadir so future changes to the current + // working directory don't affect the node. + confCopy := *conf + conf = &confCopy + + node := &Node{ + config: conf, + eventmux: new(event.TypeMux), + } + + // Register built-in APIs. + node.rpcAPIs = append(node.rpcAPIs, node.apis()...) + + // Ensure that the AccountManager method works before the node has started. We rely on + // this in cmd/geth. + am, err := makeAccountManager(conf) + if err != nil { + return nil, err + } + node.accman = am + + // Configure RPC servers. + + return node, nil +} + +// Config returns the configuration of node. +func (n *Node) Config() *Config { + return n.config +} + +// AccountManager retrieves the account manager used by the protocol stack. +func (n *Node) AccountManager() *accounts.Manager { + return n.accman +} + +// EventMux retrieves the event multiplexer used by all the network services in +// the current protocol stack. +func (n *Node) EventMux() *event.TypeMux { + return n.eventmux +} + +// RegisterAPIs registers the APIs a service provides on the node. +func (n *Node) RegisterAPIs(apis []rpc.API) { + n.lock.Lock() + defer n.lock.Unlock() + + n.rpcAPIs = append(n.rpcAPIs, apis...) +} diff --git a/notes/copied-list.txt b/notes/copied-list.txt new file mode 100644 index 0000000000..d05d38c4ab --- /dev/null +++ b/notes/copied-list.txt @@ -0,0 +1,96 @@ +./consensus/errors.go +./consensus/misc/dao.go +./consensus/misc/forks.go +./core/blockchain_insert.go +./core/blocks.go +./core/block_validator.go +./core/bloombits/doc.go +./core/bloombits/generator.go +./core/bloombits/matcher.go +./core/bloombits/scheduler.go +./core/chain_indexer.go +./core/error.go +./core/gaspool.go +./core/headerchain.go +./core/mkalloc.go +./core/rawdb/accessors_indexes.go +./core/rawdb/accessors_metadata.go +./core/rawdb/database.go +./core/rawdb/freezer.go +./core/rawdb/freezer_reinit.go +./core/rawdb/freezer_table.go +./core/rawdb/schema.go +./core/rawdb/table.go +./core/state/database.go +./core/state/dump.go +./core/state/iterator.go +./core/state_prefetcher.go +./core/state/sync.go +./core/state_transition.go +./core/tx_cacher.go +./core/tx_journal.go +./core/tx_list.go +./core/tx_noncer.go +./core/types/bloom9.go +./core/types/derive_sha.go +./core/types/gen_header_json.go +./core/types/gen_log_json.go +./core/types/gen_receipt_json.go +./core/types/gen_tx_json.go +./core/types.go +./core/types/log.go +./core/types/receipt.go +./core/types/transaction.go +./core/types/transaction_signing.go +./core/vm/analysis.go +./core/vm/common.go +./core/vm/contract.go +./core/vm/contracts.go +./core/vm/doc.go +./core/vm/eips.go +./core/vm/gas.go +./core/vm/gas_table.go +./core/vm/gen_structlog.go +./core/vm/intpool.go +./core/vm/int_pool_verifier_empty.go +./core/vm/int_pool_verifier.go +./core/vm/logger.go +./core/vm/logger_json.go +./core/vm/memory.go +./core/vm/stack.go +./core/vm/stack_table.go +./eth/bloombits.go +./eth/filters/api.go +./eth/filters/filter.go +./eth/filters/filter_system.go +./eth/metrics.go +./eth/tracers/internal/tracers/tracers.go +./eth/tracers/tracer.go +./eth/tracers/tracers.go +./internal/debug/api.go +./internal/debug/flags.go +./internal/debug/loudpanic_fallback.go +./internal/debug/loudpanic.go +./internal/debug/trace_fallback.go +./internal/debug/trace.go +./internal/ethapi/addrlock.go +./miner/unconfirmed.go +./node/defaults.go +./node/errors.go +./params/dao.go +./params/denomination.go +./params/network_params.go +./params/version.go +./rpc/constants_unix_nocgo.go +./rpc/doc.go +./rpc/errors.go +./rpc/gzip.go +./rpc/handler.go +./rpc/http.go +./rpc/ipc_js.go +./rpc/json.go +./rpc/server.go +./rpc/service.go +./rpc/subscription.go +./rpc/websocket.go +./accounts/* diff --git a/notes/hacked-list.txt b/notes/hacked-list.txt new file mode 100644 index 0000000000..691fa507da --- /dev/null +++ b/notes/hacked-list.txt @@ -0,0 +1,46 @@ +./consensus/dummy/consensus.go +./consensus/consensus.go +./core/blockchain.go +./core/events.go +./core/evm.go +./core/genesis.go +./core/gen_genesis_account.go +./core/gen_genesis.go +./core/rawdb/accessors_chain.go +./core/state/journal.go +./core/state_processor.go +./core/state/statedb.go +./core/state/state_object.go +./core/tx_pool.go +./core/types/block.go +./core/vm/errors.go +./core/vm/evm.go +./core/vm/instructions.go +./core/vm/interface.go +./core/vm/interpreter.go +./core/vm/jump_table.go +./core/vm/memory_table.go +./core/vm/opcodes.go +./eth/api_backend.go +./eth/api.go +./eth/api_tracer.go +./eth/backend.go +./eth/config.go +./eth/gasprice/gasprice.go +./eth/tracers/internal/tracers/assets.go +./ethclient/ethclient.go +./ethclient/signer.go +./internal/ethapi/api.go +./internal/ethapi/backend.go +./miner/miner.go +./miner/worker.go +./node/api.go +./node/config.go +./node/node.go +./node/service.go +./params/config.go +./params/protocol_params.go +./rpc/client.go +./rpc/types.go +./interfaces.go (moved to interfaces/interfaces.go) +./accounts/keystore/account_cache.go (minor formatting change to pass linting) diff --git a/params/config.go b/params/config.go new file mode 100644 index 0000000000..7928ec0cbc --- /dev/null +++ b/params/config.go @@ -0,0 +1,402 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package params + +import ( + "errors" + "fmt" + "math/big" + + "github.com/ethereum/go-ethereum/common" +) + +var ( + errNonGenesisForkByHeight = errors.New("subnet-evm only supports forking by height at the genesis block") + + SubnetEVMChainID = big.NewInt(43214) + + // For legacy tests + MinGasPrice int64 = 225_000_000_000 + TestMinBaseFee = big.NewInt(75_000_000_000) + TestMaxBaseFee = big.NewInt(225_000_000_000) + + ExtraDataSize = 80 + RollupWindow uint64 = 10 + + DefaultFeeConfig = &FeeConfig{ + GasLimit: big.NewInt(8_000_000), + TargetBlockRate: 2, // in seconds + + MinBaseFee: big.NewInt(25_000_000_000), + TargetGas: big.NewInt(15_000_000), + BaseFeeChangeDenominator: big.NewInt(36), + + MinBlockGasCost: big.NewInt(0), + MaxBlockGasCost: big.NewInt(1_000_000), + BlockGasCostStep: big.NewInt(200_000), + } +) + +var ( + // AvalancheMainnetChainConfig is the configuration for Avalanche Main Network + SubnetEVMDefaultChainConfig = &ChainConfig{ + ChainID: SubnetEVMChainID, + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP150Hash: common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(0), + IstanbulBlock: big.NewInt(0), + MuirGlacierBlock: big.NewInt(0), + SubnetEVMTimestamp: big.NewInt(0), + FeeConfig: DefaultFeeConfig, + } + + TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), DefaultFeeConfig} + TestPreSubnetEVMConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, DefaultFeeConfig} +) + +// ChainConfig is the core config which determines the blockchain settings. +// +// ChainConfig is stored in the database on a per block basis. This means +// that any network, identified by its genesis block, can have its own +// set of configuration options. +type ChainConfig struct { + ChainID *big.Int `json:"chainId"` // chainId identifies the current chain and is used for replay protection + + HomesteadBlock *big.Int `json:"homesteadBlock,omitempty"` // Homestead switch block (nil = no fork, 0 = already homestead) + + // EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150) + EIP150Block *big.Int `json:"eip150Block,omitempty"` // EIP150 HF block (nil = no fork) + EIP150Hash common.Hash `json:"eip150Hash,omitempty"` // EIP150 HF hash (needed for header only clients as only gas pricing changed) + + EIP155Block *big.Int `json:"eip155Block,omitempty"` // EIP155 HF block + EIP158Block *big.Int `json:"eip158Block,omitempty"` // EIP158 HF block + + ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = already on byzantium) + ConstantinopleBlock *big.Int `json:"constantinopleBlock,omitempty"` // Constantinople switch block (nil = no fork, 0 = already activated) + PetersburgBlock *big.Int `json:"petersburgBlock,omitempty"` // Petersburg switch block (nil = same as Constantinople) + IstanbulBlock *big.Int `json:"istanbulBlock,omitempty"` // Istanbul switch block (nil = no fork, 0 = already on istanbul) + MuirGlacierBlock *big.Int `json:"muirGlacierBlock,omitempty"` // Eip-2384 (bomb delay) switch block (nil = no fork, 0 = already activated) + + SubnetEVMTimestamp *big.Int `json:"subnetEVMTimestamp,omitempty"` // A placeholder for the latest avalanche forks (nil = no fork, 0 = already activated) + + FeeConfig *FeeConfig `json:"feeConfig,omitempty"` +} + +type FeeConfig struct { + GasLimit *big.Int `json:"gasLimit,omitempty"` + TargetBlockRate uint64 `json:"targetBlockRate,omitempty"` + + MinBaseFee *big.Int `json:"minBaseFee,omitempty"` + TargetGas *big.Int `json:"targetGas,omitempty"` + BaseFeeChangeDenominator *big.Int `json:"baseFeeChangeDenominator,omitempty"` + + MinBlockGasCost *big.Int `json:"minBlockGasCost,omitempty"` + MaxBlockGasCost *big.Int `json:"maxBlockGasCost,omitempty"` + BlockGasCostStep *big.Int `json:"blockGasCostStep,omitempty"` +} + +// String implements the fmt.Stringer interface. +func (c *ChainConfig) String() string { + return fmt.Sprintf("{ChainID: %v Homestead: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Petersburg: %v Istanbul: %v, Muir Glacier: %v, Subnet EVM: %v, Engine: Dummy Consensus Engine}", + c.ChainID, + c.HomesteadBlock, + c.EIP150Block, + c.EIP155Block, + c.EIP158Block, + c.ByzantiumBlock, + c.ConstantinopleBlock, + c.PetersburgBlock, + c.IstanbulBlock, + c.MuirGlacierBlock, + c.SubnetEVMTimestamp, + ) +} + +// IsHomestead returns whether num is either equal to the homestead block or greater. +func (c *ChainConfig) IsHomestead(num *big.Int) bool { + return isForked(c.HomesteadBlock, num) +} + +// IsEIP150 returns whether num is either equal to the EIP150 fork block or greater. +func (c *ChainConfig) IsEIP150(num *big.Int) bool { + return isForked(c.EIP150Block, num) +} + +// IsEIP155 returns whether num is either equal to the EIP155 fork block or greater. +func (c *ChainConfig) IsEIP155(num *big.Int) bool { + return isForked(c.EIP155Block, num) +} + +// IsEIP158 returns whether num is either equal to the EIP158 fork block or greater. +func (c *ChainConfig) IsEIP158(num *big.Int) bool { + return isForked(c.EIP158Block, num) +} + +// IsByzantium returns whether num is either equal to the Byzantium fork block or greater. +func (c *ChainConfig) IsByzantium(num *big.Int) bool { + return isForked(c.ByzantiumBlock, num) +} + +// IsConstantinople returns whether num is either equal to the Constantinople fork block or greater. +func (c *ChainConfig) IsConstantinople(num *big.Int) bool { + return isForked(c.ConstantinopleBlock, num) +} + +// IsMuirGlacier returns whether num is either equal to the Muir Glacier (EIP-2384) fork block or greater. +func (c *ChainConfig) IsMuirGlacier(num *big.Int) bool { + return isForked(c.MuirGlacierBlock, num) +} + +// IsPetersburg returns whether num is either +// - equal to or greater than the PetersburgBlock fork block, +// - OR is nil, and Constantinople is active +func (c *ChainConfig) IsPetersburg(num *big.Int) bool { + return isForked(c.PetersburgBlock, num) || c.PetersburgBlock == nil && isForked(c.ConstantinopleBlock, num) +} + +// IsIstanbul returns whether num is either equal to the Istanbul fork block or greater. +func (c *ChainConfig) IsIstanbul(num *big.Int) bool { + return isForked(c.IstanbulBlock, num) +} + +// IsSubnetEVM returns whether num is either equal to the SubnetEVM fork block timestamp or greater. +func (c *ChainConfig) IsSubnetEVM(timestamp *big.Int) bool { + return isForked(c.SubnetEVMTimestamp, timestamp) +} + +// IsIstanbul returns whether num is either equal to the Istanbul fork block or greater. +func (c *ChainConfig) GetFeeConfig() *FeeConfig { + if c.FeeConfig == nil { + return DefaultFeeConfig + } + return c.FeeConfig +} + +// CheckCompatible checks whether scheduled fork transitions have been imported +// with a mismatching chain configuration. +func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError { + bhead := new(big.Int).SetUint64(height) + + // Iterate checkCompatible to find the lowest conflict. + var lasterr *ConfigCompatError + for { + err := c.checkCompatible(newcfg, bhead) + if err == nil || (lasterr != nil && err.RewindTo == lasterr.RewindTo) { + break + } + lasterr = err + bhead.SetUint64(err.RewindTo) + } + return lasterr +} + +// CheckConfigForkOrder checks that we don't "skip" any forks, geth isn't pluggable enough +// to guarantee that forks can be implemented in a different order than on official networks +func (c *ChainConfig) CheckConfigForkOrder() error { + type fork struct { + name string + block *big.Int + optional bool // if true, the fork may be nil and next fork is still allowed + } + var lastFork fork + for _, cur := range []fork{ + {name: "homesteadBlock", block: c.HomesteadBlock}, + {name: "eip150Block", block: c.EIP150Block}, + {name: "eip155Block", block: c.EIP155Block}, + {name: "eip158Block", block: c.EIP158Block}, + {name: "byzantiumBlock", block: c.ByzantiumBlock}, + {name: "constantinopleBlock", block: c.ConstantinopleBlock}, + {name: "petersburgBlock", block: c.PetersburgBlock}, + {name: "istanbulBlock", block: c.IstanbulBlock}, + {name: "muirGlacierBlock", block: c.MuirGlacierBlock, optional: true}, + {name: "subnetEVMTimestamp", block: c.SubnetEVMTimestamp}, + } { + if cur.block != nil && common.Big0.Cmp(cur.block) != 0 { + return errNonGenesisForkByHeight + } + if lastFork.name != "" { + // Next one must be higher number + if lastFork.block == nil && cur.block != nil { + return fmt.Errorf("unsupported fork ordering: %v not enabled, but %v enabled at %v", + lastFork.name, cur.name, cur.block) + } + if lastFork.block != nil && cur.block != nil { + if lastFork.block.Cmp(cur.block) > 0 { + return fmt.Errorf("unsupported fork ordering: %v enabled at %v, but %v enabled at %v", + lastFork.name, lastFork.block, cur.name, cur.block) + } + } + } + // If it was optional and not set, then ignore it + if !cur.optional || cur.block != nil { + lastFork = cur + } + } + + return nil +} + +func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *ConfigCompatError { + if isForkIncompatible(c.HomesteadBlock, newcfg.HomesteadBlock, head) { + return newCompatError("Homestead fork block", c.HomesteadBlock, newcfg.HomesteadBlock) + } + if isForkIncompatible(c.EIP150Block, newcfg.EIP150Block, head) { + return newCompatError("EIP150 fork block", c.EIP150Block, newcfg.EIP150Block) + } + if isForkIncompatible(c.EIP155Block, newcfg.EIP155Block, head) { + return newCompatError("EIP155 fork block", c.EIP155Block, newcfg.EIP155Block) + } + if isForkIncompatible(c.EIP158Block, newcfg.EIP158Block, head) { + return newCompatError("EIP158 fork block", c.EIP158Block, newcfg.EIP158Block) + } + if c.IsEIP158(head) && !configNumEqual(c.ChainID, newcfg.ChainID) { + return newCompatError("EIP158 chain ID", c.EIP158Block, newcfg.EIP158Block) + } + if isForkIncompatible(c.ByzantiumBlock, newcfg.ByzantiumBlock, head) { + return newCompatError("Byzantium fork block", c.ByzantiumBlock, newcfg.ByzantiumBlock) + } + if isForkIncompatible(c.ConstantinopleBlock, newcfg.ConstantinopleBlock, head) { + return newCompatError("Constantinople fork block", c.ConstantinopleBlock, newcfg.ConstantinopleBlock) + } + if isForkIncompatible(c.PetersburgBlock, newcfg.PetersburgBlock, head) { + // the only case where we allow Petersburg to be set in the past is if it is equal to Constantinople + // mainly to satisfy fork ordering requirements which state that Petersburg fork be set if Constantinople fork is set + if isForkIncompatible(c.ConstantinopleBlock, newcfg.PetersburgBlock, head) { + return newCompatError("Petersburg fork block", c.PetersburgBlock, newcfg.PetersburgBlock) + } + } + if isForkIncompatible(c.IstanbulBlock, newcfg.IstanbulBlock, head) { + return newCompatError("Istanbul fork block", c.IstanbulBlock, newcfg.IstanbulBlock) + } + if isForkIncompatible(c.MuirGlacierBlock, newcfg.MuirGlacierBlock, head) { + return newCompatError("Muir Glacier fork block", c.MuirGlacierBlock, newcfg.MuirGlacierBlock) + } + // TODO(aaronbuchwald) ensure that Avalanche Blocktimestamps are not modified + return nil +} + +// isForkIncompatible returns true if a fork scheduled at s1 cannot be rescheduled to +// block s2 because head is already past the fork. +func isForkIncompatible(s1, s2, head *big.Int) bool { + return (isForked(s1, head) || isForked(s2, head)) && !configNumEqual(s1, s2) +} + +// isForked returns whether a fork scheduled at block s is active at the given head block. +func isForked(s, head *big.Int) bool { + if s == nil || head == nil { + return false + } + return s.Cmp(head) <= 0 +} + +func configNumEqual(x, y *big.Int) bool { + if x == nil { + return y == nil + } + if y == nil { + return x == nil + } + return x.Cmp(y) == 0 +} + +// ConfigCompatError is raised if the locally-stored blockchain is initialised with a +// ChainConfig that would alter the past. +type ConfigCompatError struct { + What string + // block numbers of the stored and new configurations + StoredConfig, NewConfig *big.Int + // the block number to which the local chain must be rewound to correct the error + RewindTo uint64 +} + +func newCompatError(what string, storedblock, newblock *big.Int) *ConfigCompatError { + var rew *big.Int + switch { + case storedblock == nil: + rew = newblock + case newblock == nil || storedblock.Cmp(newblock) < 0: + rew = storedblock + default: + rew = newblock + } + err := &ConfigCompatError{what, storedblock, newblock, 0} + if rew != nil && rew.Sign() > 0 { + err.RewindTo = rew.Uint64() - 1 + } + return err +} + +func (err *ConfigCompatError) Error() string { + return fmt.Sprintf("mismatching %s in database (have %d, want %d, rewindto %d)", err.What, err.StoredConfig, err.NewConfig, err.RewindTo) +} + +// Rules wraps ChainConfig and is merely syntactic sugar or can be used for functions +// that do not have or require information about the block. +// +// Rules is a one time interface meaning that it shouldn't be used in between transition +// phases. +type Rules struct { + ChainID *big.Int + IsHomestead, IsEIP150, IsEIP155, IsEIP158 bool + IsByzantium, IsConstantinople, IsPetersburg, IsIstanbul bool + + // Rules for Avalanche releases + IsSubnetEVM bool +} + +// Rules ensures c's ChainID is not nil. +func (c *ChainConfig) rules(num *big.Int) Rules { + chainID := c.ChainID + if chainID == nil { + chainID = new(big.Int) + } + return Rules{ + ChainID: new(big.Int).Set(chainID), + IsHomestead: c.IsHomestead(num), + IsEIP150: c.IsEIP150(num), + IsEIP155: c.IsEIP155(num), + IsEIP158: c.IsEIP158(num), + IsByzantium: c.IsByzantium(num), + IsConstantinople: c.IsConstantinople(num), + IsPetersburg: c.IsPetersburg(num), + IsIstanbul: c.IsIstanbul(num), + } +} + +// AvalancheRules returns the Avalanche modified rules to support Avalanche +// network upgrades +func (c *ChainConfig) AvalancheRules(blockNum, blockTimestamp *big.Int) Rules { + rules := c.rules(blockNum) + + rules.IsSubnetEVM = c.IsSubnetEVM(blockTimestamp) + return rules +} diff --git a/params/denomination.go b/params/denomination.go new file mode 100644 index 0000000000..dfaff524ac --- /dev/null +++ b/params/denomination.go @@ -0,0 +1,38 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package params + +// These are the multipliers for ether denominations. +// Example: To get the wei value of an amount in 'gwei', use +// +// new(big.Int).Mul(value, big.NewInt(params.GWei)) +// +const ( + Wei = 1 + GWei = 1e9 + Ether = 1e18 +) diff --git a/params/network_params.go b/params/network_params.go new file mode 100644 index 0000000000..aeb02cc3e7 --- /dev/null +++ b/params/network_params.go @@ -0,0 +1,77 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package params + +// These are network parameters that need to be constant between clients, but +// aren't necessarily consensus related. + +const ( + // BloomBitsBlocks is the number of blocks a single bloom bit section vector + // contains on the server side. + BloomBitsBlocks uint64 = 4096 + + // BloomBitsBlocksClient is the number of blocks a single bloom bit section vector + // contains on the light client side + BloomBitsBlocksClient uint64 = 32768 + + // BloomConfirms is the number of confirmation blocks before a bloom section is + // considered probably final and its rotated bits are calculated. + BloomConfirms = 256 + + // CHTFrequency is the block frequency for creating CHTs + CHTFrequency = 32768 + + // BloomTrieFrequency is the block frequency for creating BloomTrie on both + // server/client sides. + BloomTrieFrequency = 32768 + + // HelperTrieConfirmations is the number of confirmations before a client is expected + // to have the given HelperTrie available. + HelperTrieConfirmations = 2048 + + // HelperTrieProcessConfirmations is the number of confirmations before a HelperTrie + // is generated + HelperTrieProcessConfirmations = 256 + + // CheckpointFrequency is the block frequency for creating checkpoint + CheckpointFrequency = 32768 + + // CheckpointProcessConfirmations is the number before a checkpoint is generated + CheckpointProcessConfirmations = 256 + + // FullImmutabilityThreshold is the number of blocks after which a chain segment is + // considered immutable (i.e. soft finality). It is used by the downloader as a + // hard limit against deep ancestors, by the blockchain against deep reorgs, by + // the freezer as the cutoff threshold and by clique as the snapshot trust limit. + FullImmutabilityThreshold = 90000 + + // LightImmutabilityThreshold is the number of blocks after which a header chain + // segment is considered immutable for light client(i.e. soft finality). It is used by + // the downloader as a hard limit against deep ancestors, by the blockchain against deep + // reorgs, by the light pruner as the pruning validity guarantee. + LightImmutabilityThreshold = 30000 +) diff --git a/params/protocol_params.go b/params/protocol_params.go new file mode 100644 index 0000000000..703cf22ad7 --- /dev/null +++ b/params/protocol_params.go @@ -0,0 +1,170 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package params + +import "math/big" + +const ( + GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations. + MinGasLimit uint64 = 5000 // Minimum the gas limit may ever be. + GenesisGasLimit uint64 = 4712388 // Gas limit of the Genesis block. + + MaximumExtraDataSize uint64 = 64 // Maximum size extra data may be after Genesis. + ExpByteGas uint64 = 10 // Times ceil(log256(exponent)) for the EXP instruction. + SloadGas uint64 = 50 // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added. + CallValueTransferGas uint64 = 9000 // Paid for CALL when the value transfer is non-zero. + CallNewAccountGas uint64 = 25000 // Paid for CALL when the destination address didn't exist prior. + TxGas uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions. + TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions. + TxDataZeroGas uint64 = 4 // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions. + QuadCoeffDiv uint64 = 512 // Divisor for the quadratic particle of the memory cost equation. + LogDataGas uint64 = 8 // Per byte in a LOG* operation's data. + CallStipend uint64 = 2300 // Free gas given at beginning of call. + + Sha3Gas uint64 = 30 // Once per SHA3 operation. + Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data. + + SstoreSetGas uint64 = 20000 // Once per SSTORE operation. + SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero. + SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change. + SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero. + + NetSstoreNoopGas uint64 = 200 // Once per SSTORE operation if the value doesn't change. + NetSstoreInitGas uint64 = 20000 // Once per SSTORE operation from clean zero. + NetSstoreCleanGas uint64 = 5000 // Once per SSTORE operation from clean non-zero. + NetSstoreDirtyGas uint64 = 200 // Once per SSTORE operation from dirty. + + NetSstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot + NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value + NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value + + SstoreSentryGasEIP2200 uint64 = 2300 // Minimum gas required to be present for an SSTORE call, not consumed + SstoreSetGasEIP2200 uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero + SstoreResetGasEIP2200 uint64 = 5000 // Once per SSTORE operation from clean non-zero to something else + SstoreClearsScheduleRefundEIP2200 uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot + + ColdAccountAccessCostEIP2929 = uint64(2600) // COLD_ACCOUNT_ACCESS_COST + ColdSloadCostEIP2929 = uint64(2100) // COLD_SLOAD_COST + WarmStorageReadCostEIP2929 = uint64(100) // WARM_STORAGE_READ_COST + + // In EIP-2200: SstoreResetGas was 5000. + // In EIP-2929: SstoreResetGas was changed to '5000 - COLD_SLOAD_COST'. + // In EIP-3529: SSTORE_CLEARS_SCHEDULE is defined as SSTORE_RESET_GAS + ACCESS_LIST_STORAGE_KEY_COST + // Which becomes: 5000 - 2100 + 1900 = 4800 + SstoreClearsScheduleRefundEIP3529 uint64 = SstoreResetGasEIP2200 - ColdSloadCostEIP2929 + TxAccessListStorageKeyGas + + JumpdestGas uint64 = 1 // Once per JUMPDEST operation. + EpochDuration uint64 = 30000 // Duration between proof-of-work epochs. + + CreateDataGas uint64 = 200 // + CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack. + ExpGas uint64 = 10 // Once per EXP instruction + LogGas uint64 = 375 // Per LOG* operation. + CopyGas uint64 = 3 // + StackLimit uint64 = 1024 // Maximum size of VM stack allowed. + TierStepGas uint64 = 0 // Once per operation, for a selection of them. + LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas. + CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction. + Create2Gas uint64 = 32000 // Once per CREATE2 operation + SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation. + MemoryGas uint64 = 3 // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL. + + TxDataNonZeroGasFrontier uint64 = 68 // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions. + TxDataNonZeroGasEIP2028 uint64 = 16 // Per byte of non zero data attached to a transaction after EIP 2028 (part in Istanbul) + TxAccessListAddressGas uint64 = 2400 // Per address specified in EIP 2930 access list + TxAccessListStorageKeyGas uint64 = 1900 // Per storage key specified in EIP 2930 access list + + // These have been changed during the course of the chain + CallGasFrontier uint64 = 40 // Once per CALL operation & message call transaction. + CallGasEIP150 uint64 = 700 // Static portion of gas for CALL-derivates after EIP 150 (Tangerine) + BalanceGasFrontier uint64 = 20 // The cost of a BALANCE operation + BalanceGasEIP150 uint64 = 400 // The cost of a BALANCE operation after Tangerine + BalanceGasEIP1884 uint64 = 700 // The cost of a BALANCE operation after EIP 1884 (part of Istanbul) + ExtcodeSizeGasFrontier uint64 = 20 // Cost of EXTCODESIZE before EIP 150 (Tangerine) + ExtcodeSizeGasEIP150 uint64 = 700 // Cost of EXTCODESIZE after EIP 150 (Tangerine) + SloadGasFrontier uint64 = 50 + SloadGasEIP150 uint64 = 200 + SloadGasEIP1884 uint64 = 800 // Cost of SLOAD after EIP 1884 (part of Istanbul) + SloadGasEIP2200 uint64 = 800 // Cost of SLOAD after EIP 2200 (part of Istanbul) + ExtcodeHashGasConstantinople uint64 = 400 // Cost of EXTCODEHASH (introduced in Constantinople) + ExtcodeHashGasEIP1884 uint64 = 700 // Cost of EXTCODEHASH after EIP 1884 (part in Istanbul) + SelfdestructGasEIP150 uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine) + + // EXP has a dynamic portion depending on the size of the exponent + ExpByteFrontier uint64 = 10 // was set to 10 in Frontier + ExpByteEIP158 uint64 = 50 // was raised to 50 during Eip158 (Spurious Dragon) + + // Extcodecopy has a dynamic AND a static cost. This represents only the + // static portion of the gas. It was changed during EIP 150 (Tangerine) + ExtcodeCopyBaseFrontier uint64 = 20 + ExtcodeCopyBaseEIP150 uint64 = 700 + + // CreateBySelfdestructGas is used when the refunded account is one that does + // not exist. This logic is similar to call. + // Introduced in Tangerine Whistle (Eip 150) + CreateBySelfdestructGas uint64 = 25000 + + MaxCodeSize = 24576 // Maximum bytecode to permit for a contract + + // Precompiled contract gas prices + + EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price + Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation + Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation + Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation + Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation + IdentityBaseGas uint64 = 15 // Base price for a data copy operation + IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation + + Bn256AddGasByzantium uint64 = 500 // Byzantium gas needed for an elliptic curve addition + Bn256AddGasIstanbul uint64 = 150 // Gas needed for an elliptic curve addition + Bn256ScalarMulGasByzantium uint64 = 40000 // Byzantium gas needed for an elliptic curve scalar multiplication + Bn256ScalarMulGasIstanbul uint64 = 6000 // Gas needed for an elliptic curve scalar multiplication + Bn256PairingBaseGasByzantium uint64 = 100000 // Byzantium base price for an elliptic curve pairing check + Bn256PairingBaseGasIstanbul uint64 = 45000 // Base price for an elliptic curve pairing check + Bn256PairingPerPointGasByzantium uint64 = 80000 // Byzantium per-point price for an elliptic curve pairing check + Bn256PairingPerPointGasIstanbul uint64 = 34000 // Per-point price for an elliptic curve pairing check + + Bls12381G1AddGas uint64 = 600 // Price for BLS12-381 elliptic curve G1 point addition + Bls12381G1MulGas uint64 = 12000 // Price for BLS12-381 elliptic curve G1 point scalar multiplication + Bls12381G2AddGas uint64 = 4500 // Price for BLS12-381 elliptic curve G2 point addition + Bls12381G2MulGas uint64 = 55000 // Price for BLS12-381 elliptic curve G2 point scalar multiplication + Bls12381PairingBaseGas uint64 = 115000 // Base gas price for BLS12-381 elliptic curve pairing check + Bls12381PairingPerPairGas uint64 = 23000 // Per-point pair gas price for BLS12-381 elliptic curve pairing check + Bls12381MapG1Gas uint64 = 5500 // Gas price for BLS12-381 mapping field element to G1 operation + Bls12381MapG2Gas uint64 = 110000 // Gas price for BLS12-381 mapping field element to G2 operation +) + +// Gas discount table for BLS12-381 G1 and G2 multi exponentiation operations +var Bls12381MultiExpDiscountTable = [128]uint64{1200, 888, 764, 641, 594, 547, 500, 453, 438, 423, 408, 394, 379, 364, 349, 334, 330, 326, 322, 318, 314, 310, 306, 302, 298, 294, 289, 285, 281, 277, 273, 269, 268, 266, 265, 263, 262, 260, 259, 257, 256, 254, 253, 251, 250, 248, 247, 245, 244, 242, 241, 239, 238, 236, 235, 233, 232, 231, 229, 228, 226, 225, 223, 222, 221, 220, 219, 219, 218, 217, 216, 216, 215, 214, 213, 213, 212, 211, 211, 210, 209, 208, 208, 207, 206, 205, 205, 204, 203, 202, 202, 201, 200, 199, 199, 198, 197, 196, 196, 195, 194, 193, 193, 192, 191, 191, 190, 189, 188, 188, 187, 186, 185, 185, 184, 183, 182, 182, 181, 180, 179, 179, 178, 177, 176, 176, 175, 174} + +var ( + DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations. + GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block. + MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be. + DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not. +) diff --git a/params/version.go b/params/version.go new file mode 100644 index 0000000000..22334a6a6c --- /dev/null +++ b/params/version.go @@ -0,0 +1,52 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package params + +import ( + "fmt" +) + +const ( + VersionMajor = 1 // Major version component of the current release + VersionMinor = 10 // Minor version component of the current release + VersionPatch = 12 // Patch version component of the current release + VersionMeta = "stable" // Version metadata to append to the version string +) + +// Version holds the textual version string. +var Version = func() string { + return fmt.Sprintf("%d.%d.%d", VersionMajor, VersionMinor, VersionPatch) +}() + +// VersionWithMeta holds the textual version string including the metadata. +var VersionWithMeta = func() string { + v := Version + if VersionMeta != "" { + v += "-" + VersionMeta + } + return v +}() diff --git a/plugin/evm/admin.go b/plugin/evm/admin.go new file mode 100644 index 0000000000..0cdeb2add7 --- /dev/null +++ b/plugin/evm/admin.go @@ -0,0 +1,77 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "fmt" + "net/http" + + "github.com/ava-labs/avalanchego/api" + "github.com/ava-labs/avalanchego/utils/profiler" + "github.com/ethereum/go-ethereum/log" +) + +// Admin is the API service for admin API calls +type Admin struct { + vm *VM + profiler profiler.Profiler +} + +func NewAdminService(vm *VM, performanceDir string) *Admin { + return &Admin{ + vm: vm, + profiler: profiler.New(performanceDir), + } +} + +// StartCPUProfiler starts a cpu profile writing to the specified file +func (p *Admin) StartCPUProfiler(r *http.Request, args *struct{}, reply *api.SuccessResponse) error { + log.Info("Admin: StartCPUProfiler called") + + err := p.profiler.StartCPUProfiler() + reply.Success = err == nil + return err +} + +// StopCPUProfiler stops the cpu profile +func (p *Admin) StopCPUProfiler(r *http.Request, args *struct{}, reply *api.SuccessResponse) error { + log.Info("Admin: StopCPUProfiler called") + + err := p.profiler.StopCPUProfiler() + reply.Success = err == nil + return err +} + +// MemoryProfile runs a memory profile writing to the specified file +func (p *Admin) MemoryProfile(r *http.Request, args *struct{}, reply *api.SuccessResponse) error { + log.Info("Admin: MemoryProfile called") + + err := p.profiler.MemoryProfile() + reply.Success = err == nil + return err +} + +// LockProfile runs a mutex profile writing to the specified file +func (p *Admin) LockProfile(r *http.Request, args *struct{}, reply *api.SuccessResponse) error { + log.Info("Admin: LockProfile called") + + err := p.profiler.LockProfile() + reply.Success = err == nil + return err +} + +type SetLogLevelArgs struct { + Level string `json:"level"` +} + +func (p *Admin) SetLogLevel(r *http.Request, args *SetLogLevelArgs, reply *api.SuccessResponse) error { + log.Info("EVM: SetLogLevel called", "logLevel", args.Level) + logLevel, err := log.LvlFromString(args.Level) + if err != nil { + return fmt.Errorf("failed to parse log level: %w ", err) + } + p.vm.setLogLevel(logLevel) + reply.Success = true + return nil +} diff --git a/plugin/evm/block.go b/plugin/evm/block.go new file mode 100644 index 0000000000..5d1b0de626 --- /dev/null +++ b/plugin/evm/block.go @@ -0,0 +1,187 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "fmt" + "math/big" + "time" + + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" + + "github.com/ava-labs/subnet-evm/core/types" + + "github.com/ava-labs/avalanchego/ids" + "github.com/ava-labs/avalanchego/snow/choices" +) + +var bonusBlocks = ids.Set{} + +func init() { + blockIDStrs := []string{ + "XMoEsew2DhSgQaydcJFJUQAQYP8BTNTYbEJZvtbrV2QsX7iE3", + "2QiHZwLhQ3xLuyyfcdo5yCUfoSqWDvRZox5ECU19HiswfroCGp", + "tLLijh7oKfvWT1yk9zRv4FQvuQ5DAiuvb5kHCNN9zh4mqkFMG", + "2db2wMbVAoCc5EUJrsBYWvNZDekqyY8uNpaaVapdBAQZ5oRaou", + "2rAsBj3emqQa13CV8r5fTtHogs4sXnjvbbXVzcKPi3WmzhpK9D", + "amgH2C1s9H3Av7vSW4y7n7TXb9tKyKHENvrDXutgNN6nsejgc", + "dWBsRYRwFrcyi3DPdLoHsL67QkZ5h86hwtVfP94ZBaY18EkmF", + "PgaRk1UAoUvRybhnXsrLq5t6imWhEa6ksNjbN6hWgs4qPrSzm", + "b7XfDDLgwB12DfL7UTWZoxwBpkLPL5mdHtXngD94Y2RoeWXSh", + "2i2FP6nJyvhX9FR15qN2D9AVoK5XKgBD2i2AQ7FoSpfowxvQDX", + "2J8z7HNv4nwh82wqRGyEHqQeuw4wJ6mCDCSvUgusBu35asnshK", + "2cUPPHy1hspr2nAKpQrrAEisLKkaWSS9iF2wjNFyFRs8vnSkKK", + "2gTygYckZgFZfN5QQWPaPBD3nabqjidV55mwy1x1Nd4JmJAwaM", + "5MptSdP6dBMPSwk9GJjeVe39deZJTRh9i82cgNibjeDffrrTf", + "2v3smb35s4GLACsK4Zkd2RcLBLdWA4huqrvq8Y3VP4CVe8kfTM", + "7KCZKBpxovtX9opb7rMRie9WmW5YbZ8A4HwBBokJ9eSHpZPqx", + "2oueNTj4dUE2FFtGyPpawnmCCsy6EUQeVHVLZy8NHeQmkAciP4", + "Nzs93kFTvcXanFUp9Y8VQkKYnzmH8xykxVNFJTkdyAEeuxWbP", + "2YHZ1KymFjiBhpXzgt6HXJhLSt5SV9UQ4tJuUNjfN1nQQdm5zz", + "Qv5v5Ru8ArfnWKB1w6s4G5EYPh7TybHJtF6UsVwAkfvZFoqmj", + "z3BgePPpCXq1mRBRvUi28rYYxnEtJizkUEHnDBrcZeVA7MFVk", + "Ry2sfjFfGEnJxRkUGFSyZNn7GR3m4aKAf1scDW2uXSNQB568Y", + "2YgxGHns7Z2hMMHJsPCgVXuJaL7x1b3gnHbmSCfCdyAcYGr6mx", + "cwJusfmn98TW3DjAbfLRN9utYR24KAQ82qpAXmVSvjHyJZuM2", + "2JbuExUGKW5mYz5KfXATwq1ibRDimgks9wEdYGNSC6Ttey1R4U", + "21Jys8UNURmtckKSV89S2hntEWymJszrLQbdLaNcbXcxDAsQSa", + "MjExz2z1qhwugc1tAyiGxRsCq4GvJwKfyyS29nr4tRVB8ooic", + "9oZh4qyBCcVwSGyDoUzRAuausvPJN3xH6nopKS6bwYzMfLoQ2", + "uK5Ff9iBfDtREpVv9NgCQ1STD1nzLJG3yrfibHG4mGvmybw6f", + "22ck2Z7cC38hmBfX2v3jMWxun8eD8psNaicfYeokS67DxwmPTx", + "2AfTQ2FXNj9bkSUQnud9pFXULx6EbF7cbbw6i3ayvc2QNhgxfF", + "pTf7gfk1ksj7bqMrLyMCij8FBKth1uRqQrtfykMFeXhx5xnrL", + "2AXxT3PSEnaYHNtBTnYrVTf24TtKDWjky9sqoFEhydrGXE9iKH", + "PJTkRrHvKZ1m4AQdPND1MBpUXpCrGN4DDmXmJQAiUrsxPoLQX", + "fV8k1U8oQDmfVwK66kAwN73aSsWiWhm8quNpVnKmSznBycV2W", + "sg6wAwFBsPQiS5Yfyh41cVkCRQbrrXsxXmeNyQ1xkunf2sdyv", + "soPweZ8DGaoUMjrnzjH3V2bypa7ZvvfqBan4UCsMUxMP759gw", + "2dNkpQF4mooveyUDfBYQTBfsGDV4wkncQPpEw4kHKfSTSTo5x", + "63YLdYXfXc5tY3mwWLaDsbXzQHYmwWVxMP7HKbRh4Du3C2iM1", + "2tCe88ur6MLQcVgwE5XxoaHiTGtSrthwKN3SdbHE4kWiQ7MSTV", + "2nG4exd9eUoAGzELfksmBR8XDCKhohY1uDKRFzEXJG4M8p3qA7", + "2F5tSQbdTfhZxvkxZqdFp7KR3FrJPKEsDLQK7KtPhNXj1EZAh4", + "21o2fVTnzzmtgXqkV1yuQeze7YEQhR5JB31jVVD9oVUnaaV8qm", + "2pSjfo7rkFCfZ2CqAxqfw8vqM2CU2nVLHrFZe3rwxz43gkVuGo", + "2QBNMMFJmhVHaGF45GAPszKyj1gK6ToBERRxYvXtM7yfrdUGPK", + "2ez4CA7w4HHr8SSobHQUAwFgj2giRNjNFUZK9JvrZFa1AuRj6X", + "2DpCuBaH94zKKFNY2XTs4GeJcwsEv6qT2DHc59S8tdg97GZpcJ", + "i1HoerJ1axognkUKKL58FvF9aLrbZKtv7TdKLkT5kgzoeU1vB", + "2SiSziHHqPjb1qkw7CdGYupokiYpd2b7mMqRiyszurctcA5AKr", + "esx5J962LtYm2aSrskpLai5e4CMMsaS1dsu9iuLGJ3KWgSu2M", + "2czmtnBS44VCWNRFUM89h4Fe9m3ZeZVYyh7Pe3FhNqjRNgPXhZ", + "DK9NqAJGry1wAo767uuYc1dYXAjUhzwka6vi8d9tNheqzGUTd", + "pE93VXY3N5QKfwsEFcM9i59UpPFgeZ8nxpJNaGaDQyDgsscNf", + "AfWvJH3rB2fdHuPWQp6qYNCFVT29MooQPRigD88rKKwUDEDhq", + "2KPW9G5tiNF14tZNfG4SqHuQrtUYVZyxuof37aZ7AnTKrQdsHn", + "BYqLB6xpqy7HsAgP2XNfGE8Ubg1uEzse5mBPTSJH9z5s8pvMa", + "Njm9TcLUXRojZk8YhEM6ksvfiPdC1TME4zJvGaDXgzMCyB6oB", + } + for _, blkIDStr := range blockIDStrs { + blkID, err := ids.FromString(blkIDStr) + if err != nil { + panic(err) + } + bonusBlocks.Add(blkID) + } +} + +// Block implements the snowman.Block interface +type Block struct { + id ids.ID + ethBlock *types.Block + vm *VM + status choices.Status +} + +// ID implements the snowman.Block interface +func (b *Block) ID() ids.ID { return b.id } + +// Accept implements the snowman.Block interface +func (b *Block) Accept() error { + vm := b.vm + + // Although returning an error from Accept is considered fatal, it is good + // practice to cleanup the batch we were modifying in the case of an error. + defer vm.db.Abort() + + b.status = choices.Accepted + log.Debug(fmt.Sprintf("Accepting block %s (%s) at height %d", b.ID().Hex(), b.ID(), b.Height())) + if err := vm.chain.Accept(b.ethBlock); err != nil { + return fmt.Errorf("chain could not accept %s: %w", b.ID(), err) + } + if err := vm.acceptedBlockDB.Put(lastAcceptedKey, b.id[:]); err != nil { + return fmt.Errorf("failed to put %s as the last accepted block: %w", b.ID(), err) + } + + return vm.db.Commit() +} + +// Reject implements the snowman.Block interface +func (b *Block) Reject() error { + b.status = choices.Rejected + log.Debug(fmt.Sprintf("Rejecting block %s (%s) at height %d", b.ID().Hex(), b.ID(), b.Height())) + + return b.vm.chain.Reject(b.ethBlock) +} + +// SetStatus implements the InternalBlock interface allowing ChainState +// to set the status on an existing block +func (b *Block) SetStatus(status choices.Status) { b.status = status } + +// Status implements the snowman.Block interface +func (b *Block) Status() choices.Status { + return b.status +} + +// Parent implements the snowman.Block interface +func (b *Block) Parent() ids.ID { + return ids.ID(b.ethBlock.ParentHash()) +} + +// Height implements the snowman.Block interface +func (b *Block) Height() uint64 { + return b.ethBlock.Number().Uint64() +} + +// Timestamp implements the snowman.Block interface +func (b *Block) Timestamp() time.Time { + return time.Unix(int64(b.ethBlock.Time()), 0) +} + +// syntacticVerify verifies that a *Block is well-formed. +func (b *Block) syntacticVerify() error { + if b == nil || b.ethBlock == nil { + return errInvalidBlock + } + + header := b.ethBlock.Header() + rules := b.vm.chainConfig.AvalancheRules(header.Number, new(big.Int).SetUint64(header.Time)) + return b.vm.getBlockValidator(rules).SyntacticVerify(b) +} + +// Verify implements the snowman.Block interface +func (b *Block) Verify() error { + return b.verify(true) +} + +func (b *Block) verify(writes bool) error { + if err := b.syntacticVerify(); err != nil { + return fmt.Errorf("syntactic block verification failed: %w", err) + } + + return b.vm.chain.BlockChain().InsertBlockManual(b.ethBlock, writes) +} + +// Bytes implements the snowman.Block interface +func (b *Block) Bytes() []byte { + res, err := rlp.EncodeToBytes(b.ethBlock) + if err != nil { + panic(err) + } + return res +} + +func (b *Block) String() string { return fmt.Sprintf("EVM block, ID = %s", b.ID()) } diff --git a/plugin/evm/block_builder.go b/plugin/evm/block_builder.go new file mode 100644 index 0000000000..28d3671b2b --- /dev/null +++ b/plugin/evm/block_builder.go @@ -0,0 +1,298 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "math/big" + "sync" + "time" + + subnetEVM "github.com/ava-labs/subnet-evm/chain" + "github.com/ava-labs/subnet-evm/params" + + "github.com/ava-labs/avalanchego/snow" + commonEng "github.com/ava-labs/avalanchego/snow/engine/common" + "github.com/ava-labs/avalanchego/utils/timer" + "github.com/ethereum/go-ethereum/log" +) + +// buildingBlkStatus denotes the current status of the VM in block production. +type buildingBlkStatus uint8 + +var ( + // Subnet EVM Params + minBlockTime = 2 * time.Second + maxBlockTime = 3 * time.Second + + // SC Params + minBlockTimeSC = 500 * time.Millisecond +) + +const ( + batchSize = 250 + + // waitBlockTime is the amount of time to wait for BuildBlock to be + // called by the engine before deciding whether or not to gossip the + // transaction that triggered the PendingTxs message to the engine. + // + // This is done to reduce contention in the network when there is no + // preferred producer. If we did not wait here, we may gossip a new + // transaction to a peer while building a block that will conflict with + // whatever the peer makes. + waitBlockTime = 100 * time.Millisecond + + dontBuild buildingBlkStatus = iota + conditionalBuild // Only used prior to SC + mayBuild + building +) + +type blockBuilder struct { + ctx *snow.Context + chainConfig *params.ChainConfig + + chain *subnetEVM.ETHChain + network Network + + shutdownChan <-chan struct{} + shutdownWg *sync.WaitGroup + + // A message is sent on this channel when a new block + // is ready to be build. This notifies the consensus engine. + notifyBuildBlockChan chan<- commonEng.Message + + // [buildBlockLock] must be held when accessing [buildStatus] + buildBlockLock sync.Mutex + + // [buildBlockTimer] is a two stage timer handling block production. + // Stage1 build a block if the batch size has been reached. + // Stage2 build a block regardless of the size. + buildBlockTimer *timer.Timer + + // buildStatus signals the phase of block building the VM is currently in. + // [dontBuild] indicates there's no need to build a block. + // [conditionalBuild] indicates build a block if the batch size has been reached. + // [mayBuild] indicates the VM should proceed to build a block. + // [building] indicates the VM has sent a request to the engine to build a block. + buildStatus buildingBlkStatus + + // isSC is a boolean indicating if SubnetEVM is activated. This prevents us from + // getting the current time and comparing it to the *params.chainConfig more + // than once. + isSC bool +} + +func (vm *VM) NewBlockBuilder(notifyBuildBlockChan chan<- commonEng.Message) *blockBuilder { + b := &blockBuilder{ + ctx: vm.ctx, + chainConfig: vm.chainConfig, + chain: vm.chain, + network: vm.network, + shutdownChan: vm.shutdownChan, + shutdownWg: &vm.shutdownWg, + notifyBuildBlockChan: notifyBuildBlockChan, + buildStatus: dontBuild, + } + + b.handleBlockBuilding() + return b +} + +func (b *blockBuilder) handleBlockBuilding() { + b.buildBlockTimer = timer.NewStagedTimer(b.buildBlockTwoStageTimer) + go b.ctx.Log.RecoverAndPanic(b.buildBlockTimer.Dispatch) + + if !b.chainConfig.IsSubnetEVM(big.NewInt(time.Now().Unix())) { + b.shutdownWg.Add(1) + go b.ctx.Log.RecoverAndPanic(b.migrateSC) + } else { + b.isSC = true + } +} + +func (b *blockBuilder) migrateSC() { + defer b.shutdownWg.Done() + + // In some tests, the SC timestamp is not populated. If this is the case, we + // should only stop [buildBlockTwoStageTimer] on shutdown. + if b.chainConfig.SubnetEVMTimestamp == nil { + <-b.shutdownChan + b.buildBlockTimer.Stop() + return + } + + timestamp := time.Unix(b.chainConfig.SubnetEVMTimestamp.Int64(), 0) + duration := time.Until(timestamp) + select { + case <-time.After(duration): + b.isSC = true + b.buildBlockLock.Lock() + // Flush any invalid statuses leftover from legacy block timer builder + if b.buildStatus == conditionalBuild { + b.buildStatus = mayBuild + } + b.buildBlockLock.Unlock() + case <-b.shutdownChan: + // buildBlockTimer will never be nil because we exit as soon as it is ever + // set to nil. + b.buildBlockTimer.Stop() + } +} + +// handleGenerateBlock should be called immediately after [BuildBlock]. +// [handleGenerateBlock] invocation could lead to quiesence, building a block with +// some delay, or attempting to build another block immediately. +func (b *blockBuilder) handleGenerateBlock() { + b.buildBlockLock.Lock() + defer b.buildBlockLock.Unlock() + + if !b.isSC { + // Set the buildStatus before calling Cancel or Issue on + // the mempool and after generating the block. + // This prevents [needToBuild] from returning true when the + // produced block will change whether or not we need to produce + // another block and also ensures that when the mempool adds a + // new item to Pending it will be handled appropriately by [signalTxsReady] + if b.needToBuild() { + b.buildStatus = conditionalBuild + b.buildBlockTimer.SetTimeoutIn(minBlockTime) + } else { + b.buildStatus = dontBuild + } + } else { + // If we still need to build a block immediately after building, we let the + // engine know it [mayBuild] in [minBlockTimeSC]. + // + // It is often the case in SC that a block (with the same txs) could be built + // after a few seconds of delay as the [baseFee] and/or [blockGasCost] decrease. + if b.needToBuild() { + b.buildStatus = mayBuild + b.buildBlockTimer.SetTimeoutIn(minBlockTimeSC) + } else { + b.buildStatus = dontBuild + } + } +} + +// needToBuild returns true if there are outstanding transactions to be issued +// into a block. +func (b *blockBuilder) needToBuild() bool { + size := b.chain.PendingSize() + return size > 0 +} + +// buildEarly returns true if there are sufficient outstanding transactions to +// be issued into a block to build a block early. +// +// NOTE: Only used prior to SC. +func (b *blockBuilder) buildEarly() bool { + size := b.chain.PendingSize() + return size > batchSize +} + +// buildBlockTwoStageTimer is a two stage timer that sends a notification +// to the engine when the VM is ready to build a block. +// If it should be called back again, it returns the timeout duration at +// which it should be called again. +func (b *blockBuilder) buildBlockTwoStageTimer() (time.Duration, bool) { + b.buildBlockLock.Lock() + defer b.buildBlockLock.Unlock() + + switch b.buildStatus { + case dontBuild: + case conditionalBuild: + if !b.buildEarly() { + b.buildStatus = mayBuild + return (maxBlockTime - minBlockTime), true + } + b.markBuilding() + case mayBuild: + b.markBuilding() + case building: + // If the status has already been set to building, there is no need + // to send an additional request to the consensus engine until the call + // to BuildBlock resets the block status. + default: + // Log an error if an invalid status is found. + log.Error("Found invalid build status in build block timer", "buildStatus", b.buildStatus) + } + + // No need for the timeout to fire again until BuildBlock is called. + return 0, false +} + +// markBuilding assumes the [buildBlockLock] is held. +func (b *blockBuilder) markBuilding() { + select { + case b.notifyBuildBlockChan <- commonEng.PendingTxs: + b.buildStatus = building + default: + log.Error("Failed to push PendingTxs notification to the consensus engine.") + } +} + +// signalTxsReady sets the initial timeout on the two stage timer if the process +// has not already begun from an earlier notification. If [buildStatus] is anything +// other than [dontBuild], then the attempt has already begun and this notification +// can be safely skipped. +func (b *blockBuilder) signalTxsReady() { + b.buildBlockLock.Lock() + defer b.buildBlockLock.Unlock() + + if b.buildStatus != dontBuild { + return + } + + if !b.isSC { + b.buildStatus = conditionalBuild + b.buildBlockTimer.SetTimeoutIn(minBlockTime) + return + } + + // We take a naive approach here and signal the engine that we should build + // a block as soon as we receive at least one transaction. + // + // In the future, we may wish to add optimization here to only signal the + // engine if the sum of the projected tips in the mempool satisfies the + // required block fee. + b.markBuilding() +} + +// awaitSubmittedTxs waits for new transactions to be submitted +// and notifies the VM when the tx pool has transactions to be +// put into a new block. +func (b *blockBuilder) awaitSubmittedTxs() { + b.shutdownWg.Add(1) + go b.ctx.Log.RecoverAndPanic(func() { + defer b.shutdownWg.Done() + + // txSubmitChan is invoked when new transactions are issued as well as on re-orgs which + // may orphan transactions that were previously in a preferred block. + txSubmitChan := b.chain.GetTxSubmitCh() + for { + select { + case ethTxsEvent := <-txSubmitChan: + log.Trace("New tx detected, trying to generate a block") + b.signalTxsReady() + + // We only attempt to invoke [GossipEthTxs] once SC is activated + if b.isSC && b.network != nil && len(ethTxsEvent.Txs) > 0 { + // Give time for this node to build a block before attempting to + // gossip + time.Sleep(waitBlockTime) + // [GossipEthTxs] will block unless [pushNetwork.ethTxsToGossipChan] (an + // unbuffered channel) is listened on + if err := b.network.GossipEthTxs(ethTxsEvent.Txs); err != nil { + log.Warn( + "failed to gossip new eth transactions", + "err", err, + ) + } + } + case <-b.shutdownChan: + return + } + } + }) +} diff --git a/plugin/evm/block_builder_test.go b/plugin/evm/block_builder_test.go new file mode 100644 index 0000000000..96f59c3b97 --- /dev/null +++ b/plugin/evm/block_builder_test.go @@ -0,0 +1,89 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "math/big" + "sync" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/params" + + "github.com/ava-labs/avalanchego/snow" +) + +func TestBlockBuilderShutsDown(t *testing.T) { + shutdownChan := make(chan struct{}) + wg := &sync.WaitGroup{} + config := *params.TestChainConfig + config.SubnetEVMTimestamp = big.NewInt(time.Now().Add(time.Hour).Unix()) + + builder := &blockBuilder{ + ctx: snow.DefaultContextTest(), + chainConfig: &config, + shutdownChan: shutdownChan, + shutdownWg: wg, + } + + builder.handleBlockBuilding() + // Close [shutdownChan] and ensure that the wait group finishes in a reasonable + // amount of time. + close(shutdownChan) + attemptAwait(t, wg, 5*time.Second) +} + +func TestBlockBuilderSkipsTimerInitialization(t *testing.T) { + shutdownChan := make(chan struct{}) + wg := &sync.WaitGroup{} + builder := &blockBuilder{ + ctx: snow.DefaultContextTest(), + chainConfig: params.TestChainConfig, + shutdownChan: shutdownChan, + shutdownWg: wg, + } + + builder.handleBlockBuilding() + // The wait group should finish immediately since no goroutine + // should be created when all prices should be set from the start + attemptAwait(t, wg, time.Millisecond) +} + +func TestBlockBuilderStopsTimer(t *testing.T) { + shutdownChan := make(chan struct{}) + wg := &sync.WaitGroup{} + config := *params.TestChainConfig + config.SubnetEVMTimestamp = big.NewInt(time.Now().Add(1 * time.Second).Unix()) + + builder := &blockBuilder{ + ctx: snow.DefaultContextTest(), + chainConfig: &config, + shutdownChan: shutdownChan, + shutdownWg: wg, + } + + builder.handleBlockBuilding() + + if builder.buildBlockTimer == nil { + t.Fatal("expected block timer to not be nil") + } + builder.buildBlockLock.Lock() + builder.buildStatus = conditionalBuild + builder.buildBlockLock.Unlock() + + // With Subnet EVM set slightly in the future, the builder should create a + // goroutine to sleep until its time to update and mark the wait group as done when it has + // completed the update. + attemptAwait(t, wg, 5*time.Second) + + if builder.buildBlockTimer == nil { + t.Fatal("expected block timer to be non-nil") + } + if builder.buildStatus != mayBuild { + t.Fatalf("expected build status to be %d but got %d", dontBuild, builder.buildStatus) + } + if !builder.isSC { + t.Fatal("expected isSC to be true") + } +} diff --git a/plugin/evm/block_verification.go b/plugin/evm/block_verification.go new file mode 100644 index 0000000000..4d28fc466a --- /dev/null +++ b/plugin/evm/block_verification.go @@ -0,0 +1,213 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "fmt" + "math/big" + + "github.com/ethereum/go-ethereum/common" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/trie" + + subnetEVM "github.com/ava-labs/subnet-evm/chain" +) + +var ( + legacyBlockValidator = blockValidatorLegacy{} + legacyMinGasPrice = big.NewInt(params.MinGasPrice) + subnetEVMBlockValidator = blockValidatorSubnetEVM{} +) + +type BlockValidator interface { + SyntacticVerify(b *Block) error +} + +type blockValidatorLegacy struct{} + +func (v blockValidatorLegacy) SyntacticVerify(b *Block) error { + if b == nil || b.ethBlock == nil { + return errInvalidBlock + } + + blockHash := b.ethBlock.Hash() + + // Skip verification of the genesis block since it + // should already be marked as accepted + if blockHash == b.vm.genesisHash { + return nil + } + + // Perform block and header sanity checks + ethHeader := b.ethBlock.Header() + if ethHeader.Number == nil || !ethHeader.Number.IsUint64() { + return errInvalidBlock + } + if ethHeader.Difficulty == nil || !ethHeader.Difficulty.IsUint64() || + ethHeader.Difficulty.Uint64() != 1 { + return fmt.Errorf( + "expected difficulty to be 1 but got %v: %w", + ethHeader.Difficulty, errInvalidDifficulty, + ) + } + if ethHeader.Nonce.Uint64() != 0 { + return fmt.Errorf( + "expected nonce to be 0 but got %d: %w", + ethHeader.Nonce.Uint64(), errInvalidNonce, + ) + } + if ethHeader.MixDigest != (common.Hash{}) { + return fmt.Errorf( + "expected MixDigest to be empty but got %x: %w", + ethHeader.MixDigest, errInvalidMixDigest, + ) + } + headerExtraDataSize := uint64(len(ethHeader.Extra)) + if headerExtraDataSize > params.MaximumExtraDataSize { + return fmt.Errorf( + "expected header ExtraData to be <= %d but got %d: %w", + params.MaximumExtraDataSize, headerExtraDataSize, errHeaderExtraDataTooBig, + ) + } + + // Check that the tx hash in the header matches the body + txsHash := types.DeriveSha(b.ethBlock.Transactions(), new(trie.Trie)) + if txsHash != ethHeader.TxHash { + return errTxHashMismatch + } + // Check that the uncle hash in the header matches the body + uncleHash := types.CalcUncleHash(b.ethBlock.Uncles()) + if uncleHash != ethHeader.UncleHash { + return errUncleHashMismatch + } + // Coinbase must be zero on C-Chain + if b.ethBlock.Coinbase() != subnetEVM.BlackholeAddr { + return errInvalidBlock + } + // Block must not have any uncles + if len(b.ethBlock.Uncles()) > 0 { + return errUnclesUnsupported + } + // Block must not be empty + txs := b.ethBlock.Transactions() + if len(txs) == 0 { + return errEmptyBlock + } + + // Make sure that all the txs have the correct fee set. + for _, tx := range txs { + if tx.GasPrice().Cmp(legacyMinGasPrice) < 0 { + return fmt.Errorf("block contains tx %s with gas price too low (%d < %d)", tx.Hash(), tx.GasPrice(), legacyMinGasPrice) + } + } + + // Make sure the block isn't too far in the future + blockTimestamp := b.ethBlock.Time() + if maxBlockTime := uint64(b.vm.clock.Time().Add(maxFutureBlockTime).Unix()); blockTimestamp > maxBlockTime { + return fmt.Errorf("block timestamp is too far in the future: %d > allowed %d", blockTimestamp, maxBlockTime) + } + return nil +} + +type blockValidatorSubnetEVM struct{} + +func (blockValidatorSubnetEVM) SyntacticVerify(b *Block) error { + if b == nil || b.ethBlock == nil { + return errInvalidBlock + } + + // Skip verification of the genesis block since it + // should already be marked as accepted + if b.ethBlock.Hash() == b.vm.genesisHash { + return nil + } + + // Perform block and header sanity checks + ethHeader := b.ethBlock.Header() + if ethHeader.Number == nil || !ethHeader.Number.IsUint64() { + return errInvalidBlock + } + if ethHeader.Difficulty == nil || !ethHeader.Difficulty.IsUint64() || + ethHeader.Difficulty.Uint64() != 1 { + return fmt.Errorf( + "expected difficulty to be 1 but got %v: %w", + ethHeader.Difficulty, errInvalidDifficulty, + ) + } + if ethHeader.Nonce.Uint64() != 0 { + return fmt.Errorf( + "expected nonce to be 0 but got %d: %w", + ethHeader.Nonce.Uint64(), errInvalidNonce, + ) + } + expectedGas := b.vm.chainConfig.GetFeeConfig().GasLimit.Uint64() + if ethHeader.GasLimit != expectedGas { + return fmt.Errorf( + "expected gas limit to be %d in subnetEVM but got %d", + expectedGas, ethHeader.GasLimit, + ) + } + if ethHeader.MixDigest != (common.Hash{}) { + return fmt.Errorf( + "expected MixDigest to be empty but got %x: %w", + ethHeader.MixDigest, errInvalidMixDigest, + ) + } + + expectedExtraDataSize := params.ExtraDataSize + if headerExtraDataSize := len(ethHeader.Extra); headerExtraDataSize != expectedExtraDataSize { + return fmt.Errorf( + "expected header ExtraData to be %d but got %d: %w", + expectedExtraDataSize, headerExtraDataSize, errHeaderExtraDataTooBig, + ) + } + if ethHeader.BaseFee == nil { + return errNilBaseFeeSubnetEVM + } + if bfLen := ethHeader.BaseFee.BitLen(); bfLen > 256 { + return fmt.Errorf("too large base fee: bitlen %d", bfLen) + } + + // Check that the tx hash in the header matches the body + txsHash := types.DeriveSha(b.ethBlock.Transactions(), new(trie.Trie)) + if txsHash != ethHeader.TxHash { + return errTxHashMismatch + } + // Check that the uncle hash in the header matches the body + uncleHash := types.CalcUncleHash(b.ethBlock.Uncles()) + if uncleHash != ethHeader.UncleHash { + return errUncleHashMismatch + } + // Coinbase must be zero on C-Chain + if b.ethBlock.Coinbase() != subnetEVM.BlackholeAddr { + return errInvalidBlock + } + // Block must not have any uncles + if len(b.ethBlock.Uncles()) > 0 { + return errUnclesUnsupported + } + // Block must not be empty + txs := b.ethBlock.Transactions() + if len(txs) == 0 { + return errEmptyBlock + } + + // Make sure the block isn't too far in the future + blockTimestamp := b.ethBlock.Time() + if maxBlockTime := uint64(b.vm.clock.Time().Add(maxFutureBlockTime).Unix()); blockTimestamp > maxBlockTime { + return fmt.Errorf("block timestamp is too far in the future: %d > allowed %d", blockTimestamp, maxBlockTime) + } + + switch { + // Make sure BlockGasCost is not nil + // NOTE: ethHeader.BlockGasCost correctness is checked in header verification + case ethHeader.BlockGasCost == nil: + return errNilBlockGasCostSubnetEVM + case !ethHeader.BlockGasCost.IsUint64(): + return fmt.Errorf("too large blockGasCost: %d", ethHeader.BlockGasCost) + } + return nil +} diff --git a/plugin/evm/client.go b/plugin/evm/client.go new file mode 100644 index 0000000000..b117f2634e --- /dev/null +++ b/plugin/evm/client.go @@ -0,0 +1,63 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "fmt" + "time" + + "github.com/ava-labs/avalanchego/api" + "github.com/ava-labs/avalanchego/utils/rpc" + "github.com/ethereum/go-ethereum/log" +) + +// Client ... +type Client struct { + adminRequester rpc.EndpointRequester +} + +// NewClient returns a Client for interacting with EVM [chain] +func NewClient(uri, chain string, requestTimeout time.Duration) *Client { + return &Client{ + adminRequester: rpc.NewEndpointRequester(uri, fmt.Sprintf("/ext/bc/%s/admin", chain), "admin", requestTimeout), + } +} + +// NewCChainClient returns a Client for interacting with the C Chain +func NewCChainClient(uri string, requestTimeout time.Duration) *Client { + return NewClient(uri, "C", requestTimeout) +} + +func (c *Client) StartCPUProfiler() (bool, error) { + res := &api.SuccessResponse{} + err := c.adminRequester.SendRequest("startCPUProfiler", struct{}{}, res) + return res.Success, err +} + +func (c *Client) StopCPUProfiler() (bool, error) { + res := &api.SuccessResponse{} + err := c.adminRequester.SendRequest("stopCPUProfiler", struct{}{}, res) + return res.Success, err +} + +func (c *Client) MemoryProfile() (bool, error) { + res := &api.SuccessResponse{} + err := c.adminRequester.SendRequest("memoryProfile", struct{}{}, res) + return res.Success, err +} + +func (c *Client) LockProfile() (bool, error) { + res := &api.SuccessResponse{} + err := c.adminRequester.SendRequest("lockProfile", struct{}{}, res) + return res.Success, err +} + +// SetLogLevel dynamically sets the log level for the C Chain +func (c *Client) SetLogLevel(level log.Lvl) (bool, error) { + res := &api.SuccessResponse{} + err := c.adminRequester.SendRequest("setLogLevel", &SetLogLevelArgs{ + Level: level.String(), + }, res) + return res.Success, err +} diff --git a/plugin/evm/config.go b/plugin/evm/config.go new file mode 100644 index 0000000000..6d36b09340 --- /dev/null +++ b/plugin/evm/config.go @@ -0,0 +1,149 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "encoding/json" + "time" + + "github.com/ava-labs/subnet-evm/eth" + "github.com/spf13/cast" +) + +const ( + defaultEthApiEnabled = true + defaultNetApiEnabled = true + defaultWeb3ApiEnabled = true + defaultPruningEnabled = true + defaultSnapshotAsync = true + defaultRpcGasCap = 50_000_000 // Default to 50M Gas Limit + defaultRpcTxFeeCap = 100 // 100 AVAX + defaultMetricsEnabled = false + defaultMetricsExpensiveEnabled = false + defaultApiMaxDuration = 0 // Default to no maximum API call duration + defaultWsCpuRefillRate = 0 // Default to no maximum WS CPU usage + defaultWsCpuMaxStored = 0 // Default to no maximum WS CPU usage + defaultMaxBlocksPerRequest = 0 // Default to no maximum on the number of blocks per getLogs request + defaultContinuousProfilerFrequency = 15 * time.Minute + defaultContinuousProfilerMaxFiles = 5 + defaultTxRegossipFrequency = 1 * time.Minute + defaultTxRegossipMaxSize = 15 +) + +type Duration struct { + time.Duration +} + +// Config ... +type Config struct { + // Subnet EVM APIs + SnowmanAPIEnabled bool `json:"snowman-api-enabled"` + AdminAPIEnabled bool `json:"admin-api-enabled"` + AdminAPIDir string `json:"admin-api-dir"` + NetAPIEnabled bool `json:"net-api-enabled"` + + // Continuous Profiler + ContinuousProfilerDir string `json:"continuous-profiler-dir"` // If set to non-empty string creates a continuous profiler + ContinuousProfilerFrequency Duration `json:"continuous-profiler-frequency"` // Frequency to run continuous profiler if enabled + ContinuousProfilerMaxFiles int `json:"continuous-profiler-max-files"` // Maximum number of files to maintain + + // Gas/Price Caps + RPCGasCap uint64 `json:"rpc-gas-cap"` + RPCTxFeeCap float64 `json:"rpc-tx-fee-cap"` + + // Eth APIs + EthAPIEnabled bool `json:"eth-api-enabled"` + PersonalAPIEnabled bool `json:"personal-api-enabled"` + TxPoolAPIEnabled bool `json:"tx-pool-api-enabled"` + DebugAPIEnabled bool `json:"debug-api-enabled"` + Web3APIEnabled bool `json:"web3-api-enabled"` + + // Eth Settings + Preimages bool `json:"preimages-enabled"` + Pruning bool `json:"pruning-enabled"` + SnapshotAsync bool `json:"snapshot-async"` + SnapshotVerify bool `json:"snapshot-verification-enabled"` + + // Metric Settings + MetricsEnabled bool `json:"metrics-enabled"` + MetricsExpensiveEnabled bool `json:"metrics-expensive-enabled"` + + // API Settings + LocalTxsEnabled bool `json:"local-txs-enabled"` + APIMaxDuration Duration `json:"api-max-duration"` + WSCPURefillRate Duration `json:"ws-cpu-refill-rate"` + WSCPUMaxStored Duration `json:"ws-cpu-max-stored"` + MaxBlocksPerRequest int64 `json:"api-max-blocks-per-request"` + AllowUnfinalizedQueries bool `json:"allow-unfinalized-queries"` + AllowUnprotectedTxs bool `json:"allow-unprotected-txs"` + + // Keystore Settings + KeystoreDirectory string `json:"keystore-directory"` // both absolute and relative supported + KeystoreExternalSigner string `json:"keystore-external-signer"` + KeystoreInsecureUnlockAllowed bool `json:"keystore-insecure-unlock-allowed"` + + // Gossip Settings + RemoteTxGossipOnlyEnabled bool `json:"remote-tx-gossip-only-enabled"` + TxRegossipFrequency Duration `json:"tx-regossip-frequency"` + TxRegossipMaxSize int `json:"tx-regossip-max-size"` + + // Log level + LogLevel string `json:"log-level"` +} + +// EthAPIs returns an array of strings representing the Eth APIs that should be enabled +func (c Config) EthAPIs() []string { + ethAPIs := make([]string, 0) + + if c.EthAPIEnabled { + ethAPIs = append(ethAPIs, "eth") + } + if c.PersonalAPIEnabled { + ethAPIs = append(ethAPIs, "personal") + } + if c.TxPoolAPIEnabled { + ethAPIs = append(ethAPIs, "txpool") + } + if c.DebugAPIEnabled { + ethAPIs = append(ethAPIs, "debug") + } + if c.NetAPIEnabled { + ethAPIs = append(ethAPIs, "net") + } + + return ethAPIs +} + +func (c Config) EthBackendSettings() eth.Settings { + return eth.Settings{MaxBlocksPerRequest: c.MaxBlocksPerRequest} +} + +func (c *Config) SetDefaults() { + c.EthAPIEnabled = defaultEthApiEnabled + c.NetAPIEnabled = defaultNetApiEnabled + c.Web3APIEnabled = defaultWeb3ApiEnabled + c.RPCGasCap = defaultRpcGasCap + c.RPCTxFeeCap = defaultRpcTxFeeCap + c.MetricsEnabled = defaultMetricsEnabled + c.MetricsExpensiveEnabled = defaultMetricsExpensiveEnabled + c.APIMaxDuration.Duration = defaultApiMaxDuration + c.WSCPURefillRate.Duration = defaultWsCpuRefillRate + c.WSCPUMaxStored.Duration = defaultWsCpuMaxStored + c.MaxBlocksPerRequest = defaultMaxBlocksPerRequest + c.ContinuousProfilerFrequency.Duration = defaultContinuousProfilerFrequency + c.ContinuousProfilerMaxFiles = defaultContinuousProfilerMaxFiles + c.Pruning = defaultPruningEnabled + c.SnapshotAsync = defaultSnapshotAsync + c.TxRegossipFrequency.Duration = defaultTxRegossipFrequency + c.TxRegossipMaxSize = defaultTxRegossipMaxSize +} + +func (d *Duration) UnmarshalJSON(data []byte) (err error) { + var v interface{} + if err := json.Unmarshal(data, &v); err != nil { + return err + } + d.Duration, err = cast.ToDurationE(v) + return err +} diff --git a/plugin/evm/config_test.go b/plugin/evm/config_test.go new file mode 100644 index 0000000000..eb2e18a2ee --- /dev/null +++ b/plugin/evm/config_test.go @@ -0,0 +1,60 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "encoding/json" + "fmt" + "testing" + "time" + + "github.com/stretchr/testify/assert" +) + +func TestUnmarshalConfig(t *testing.T) { + tests := []struct { + name string + givenJSON []byte + expected Config + expectedErr bool + }{ + { + "string durations parsed", + []byte(`{"api-max-duration": "1m", "continuous-profiler-frequency": "2m"}`), + Config{APIMaxDuration: Duration{1 * time.Minute}, ContinuousProfilerFrequency: Duration{2 * time.Minute}}, + false, + }, + { + "integer durations parsed", + []byte(fmt.Sprintf(`{"api-max-duration": "%v", "continuous-profiler-frequency": "%v"}`, 1*time.Minute, 2*time.Minute)), + Config{APIMaxDuration: Duration{1 * time.Minute}, ContinuousProfilerFrequency: Duration{2 * time.Minute}}, + false, + }, + { + "nanosecond durations parsed", + []byte(`{"api-max-duration": 5000000000, "continuous-profiler-frequency": 5000000000}`), + Config{APIMaxDuration: Duration{5 * time.Second}, ContinuousProfilerFrequency: Duration{5 * time.Second}}, + false, + }, + { + "bad durations", + []byte(`{"api-max-duration": "bad-duration"}`), + Config{}, + true, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + var tmp Config + err := json.Unmarshal(tt.givenJSON, &tmp) + if tt.expectedErr { + assert.Error(t, err) + } else { + assert.NoError(t, err) + assert.Equal(t, tt.expected, tmp) + } + }) + } +} diff --git a/plugin/evm/database.go b/plugin/evm/database.go new file mode 100644 index 0000000000..336ac4ac06 --- /dev/null +++ b/plugin/evm/database.go @@ -0,0 +1,46 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "github.com/ava-labs/subnet-evm/ethdb" + + "github.com/ava-labs/avalanchego/database" +) + +// Database implements ethdb.Database +type Database struct{ database.Database } + +// NewBatch implements ethdb.Database +func (db Database) NewBatch() ethdb.Batch { return Batch{db.Database.NewBatch()} } + +// NewIterator implements ethdb.Database +// +// Note: This method assumes that the prefix is NOT part of the start, so there's +// no need for the caller to prepend the prefix to the start. +func (db Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator { + // avalanchego's database implementation assumes that the prefix is part of the + // start, so it is added here (if it is provided). + if len(prefix) > 0 { + newStart := make([]byte, len(prefix)+len(start)) + copy(newStart, prefix) + copy(newStart[len(prefix):], start) + start = newStart + } + return db.Database.NewIteratorWithStartAndPrefix(start, prefix) +} + +// NewIteratorWithStart implements ethdb.Database +func (db Database) NewIteratorWithStart(start []byte) ethdb.Iterator { + return db.Database.NewIteratorWithStart(start) +} + +// Batch implements ethdb.Batch +type Batch struct{ database.Batch } + +// ValueSize implements ethdb.Batch +func (batch Batch) ValueSize() int { return batch.Batch.Size() } + +// Replay implements ethdb.Batch +func (batch Batch) Replay(w ethdb.KeyValueWriter) error { return batch.Batch.Replay(w) } diff --git a/plugin/evm/factory.go b/plugin/evm/factory.go new file mode 100644 index 0000000000..34ecc893e4 --- /dev/null +++ b/plugin/evm/factory.go @@ -0,0 +1,23 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "github.com/ava-labs/avalanchego/ids" + "github.com/ava-labs/avalanchego/snow" + "github.com/ava-labs/avalanchego/vms" +) + +var ( + // ID this VM should be referenced by + ID = ids.ID{'e', 'v', 'm'} + + _ vms.Factory = &Factory{} +) + +type Factory struct{} + +func (f *Factory) New(*snow.Context) (interface{}, error) { + return &VM{}, nil +} diff --git a/plugin/evm/gasprice_update.go b/plugin/evm/gasprice_update.go new file mode 100644 index 0000000000..4776ebb98f --- /dev/null +++ b/plugin/evm/gasprice_update.go @@ -0,0 +1,81 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "math/big" + "sync" + "time" + + "github.com/ava-labs/subnet-evm/params" +) + +type gasPriceUpdater struct { + setter gasPriceSetter + chainConfig *params.ChainConfig + shutdownChan <-chan struct{} + + wg *sync.WaitGroup +} + +type gasPriceSetter interface { + SetGasPrice(price *big.Int) + SetMinFee(price *big.Int) +} + +// handleGasPriceUpdates creates and runs an instance of +func (vm *VM) handleGasPriceUpdates() { + gpu := &gasPriceUpdater{ + setter: vm.chain.GetTxPool(), + chainConfig: vm.chainConfig, + shutdownChan: vm.shutdownChan, + wg: &vm.shutdownWg, + } + + gpu.start() +} + +// start handles the appropriate gas price and minimum fee updates required by [gpu.chainConfig] +func (gpu *gasPriceUpdater) start() { + // Updates to the minimum gas price as of Subnet EVM if it's already in effect or starts a goroutine to enable it at the correct time + if disabled := gpu.handleUpdate(gpu.setter.SetGasPrice, gpu.chainConfig.SubnetEVMTimestamp, big.NewInt(0)); disabled { + return + } + minBaseFee := gpu.chainConfig.GetFeeConfig().MinBaseFee + // Updates to the minimum gas price as of Subnet EVM if it's already in effect or starts a goroutine to enable it at the correct time + gpu.handleUpdate(gpu.setter.SetMinFee, gpu.chainConfig.SubnetEVMTimestamp, minBaseFee) +} + +// handleUpdate handles calling update(price) at the appropriate time based on +// the value of [timestamp]. +// 1) If [timestamp] is nil, update is never called +// 2) If [timestamp] has already passed, update is called immediately +// 3) [timestamp] is some time in the future, starts a goroutine that will call update(price) at the time +// given by [timestamp]. +func (gpu *gasPriceUpdater) handleUpdate(update func(price *big.Int), timestamp *big.Int, price *big.Int) bool { + if timestamp == nil { + return true + } + + currentTime := time.Now() + upgradeTime := time.Unix(timestamp.Int64(), 0) + if currentTime.After(upgradeTime) { + update(price) + } else { + gpu.wg.Add(1) + go gpu.updatePrice(update, time.Until(upgradeTime), price) + } + return false +} + +// updatePrice calls update(updatedPrice) after waiting for [duration] or shuts down early +// if the [shutdownChan] is closed. +func (gpu *gasPriceUpdater) updatePrice(update func(price *big.Int), duration time.Duration, updatedPrice *big.Int) { + defer gpu.wg.Done() + select { + case <-time.After(duration): + update(updatedPrice) + case <-gpu.shutdownChan: + } +} diff --git a/plugin/evm/gasprice_update_test.go b/plugin/evm/gasprice_update_test.go new file mode 100644 index 0000000000..d590de8809 --- /dev/null +++ b/plugin/evm/gasprice_update_test.go @@ -0,0 +1,129 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "math/big" + "sync" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/params" +) + +type mockGasPriceSetter struct { + lock sync.Mutex + price, minFee *big.Int +} + +func (m *mockGasPriceSetter) SetGasPrice(price *big.Int) { + m.lock.Lock() + defer m.lock.Unlock() + + m.price = price +} + +func (m *mockGasPriceSetter) SetMinFee(minFee *big.Int) { + m.lock.Lock() + defer m.lock.Unlock() + + m.minFee = minFee +} + +func (m *mockGasPriceSetter) GetStatus() (*big.Int, *big.Int) { + m.lock.Lock() + defer m.lock.Unlock() + + return m.price, m.minFee +} + +func attemptAwait(t *testing.T, wg *sync.WaitGroup, delay time.Duration) { + ticker := make(chan struct{}) + + // Wait for [wg] and then close [ticket] to indicate that + // the wait group has finished. + go func() { + wg.Wait() + close(ticker) + }() + + select { + case <-time.After(delay): + t.Fatal("Timed out waiting for wait group to complete") + case <-ticker: + // The wait group completed without issue + } +} + +func TestUpdateGasPriceShutsDown(t *testing.T) { + shutdownChan := make(chan struct{}) + wg := &sync.WaitGroup{} + config := *params.TestChainConfig + // Set SubnetEVMBlockTime one hour in the future so that it will + // create a goroutine waiting for an hour before updating the gas price + config.SubnetEVMTimestamp = big.NewInt(time.Now().Add(time.Hour).Unix()) + + gpu := &gasPriceUpdater{ + setter: &mockGasPriceSetter{price: big.NewInt(1)}, + chainConfig: &config, + shutdownChan: shutdownChan, + wg: wg, + } + + gpu.start() + // Close [shutdownChan] and ensure that the wait group finishes in a reasonable + // amount of time. + close(shutdownChan) + attemptAwait(t, wg, 5*time.Second) +} + +func TestUpdateGasPriceInitializesPrice(t *testing.T) { + shutdownChan := make(chan struct{}) + wg := &sync.WaitGroup{} + gpu := &gasPriceUpdater{ + setter: &mockGasPriceSetter{price: big.NewInt(1)}, + chainConfig: params.TestChainConfig, + shutdownChan: shutdownChan, + wg: wg, + } + + gpu.start() + // The wait group should finish immediately since no goroutine + // should be created when all prices should be set from the start + attemptAwait(t, wg, time.Millisecond) + + if gpu.setter.(*mockGasPriceSetter).price.Cmp(big.NewInt(0)) != 0 { + t.Fatalf("Expected price to match minimum base fee for subnet-evm") + } + + if minFee := gpu.setter.(*mockGasPriceSetter).minFee; minFee == nil || minFee.Cmp(params.DefaultFeeConfig.MinBaseFee) != 0 { + t.Fatalf("Expected min fee to match minimum fee for subnet-evm, but found: %d", minFee) + } +} + +func TestUpdateGasPriceUpdatesPrice(t *testing.T) { + shutdownChan := make(chan struct{}) + wg := &sync.WaitGroup{} + config := *params.TestChainConfig + config.SubnetEVMTimestamp = big.NewInt(time.Now().Add(1 * time.Second).Unix()) + + gpu := &gasPriceUpdater{ + setter: &mockGasPriceSetter{price: big.NewInt(1)}, + chainConfig: &config, + shutdownChan: shutdownChan, + wg: wg, + } + + gpu.start() + + // Confirm Subnet EVM settings are applied at the very end. + attemptAwait(t, wg, 5*time.Second) + price, minFee := gpu.setter.(*mockGasPriceSetter).GetStatus() + if price.Cmp(big.NewInt(0)) != 0 { + t.Fatalf("Expected price to match minimum base fee for subnet-evm") + } + if minFee == nil || minFee.Cmp(params.DefaultFeeConfig.MinBaseFee) != 0 { + t.Fatalf("Expected min fee to match minimum fee for subnet-evm, but found: %d", minFee) + } +} diff --git a/plugin/evm/health.go b/plugin/evm/health.go new file mode 100644 index 0000000000..35b49f5e8d --- /dev/null +++ b/plugin/evm/health.go @@ -0,0 +1,12 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +// Health returns nil if this chain is healthy. +// Also returns details, which should be one of: +// string, []byte, map[string]string +func (vm *VM) HealthCheck() (interface{}, error) { + // TODO perform actual health check + return nil, nil +} diff --git a/plugin/evm/message/codec.go b/plugin/evm/message/codec.go new file mode 100644 index 0000000000..62b7848c82 --- /dev/null +++ b/plugin/evm/message/codec.go @@ -0,0 +1,35 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package message + +import ( + "github.com/ava-labs/avalanchego/codec" + "github.com/ava-labs/avalanchego/codec/linearcodec" + "github.com/ava-labs/avalanchego/codec/reflectcodec" + "github.com/ava-labs/avalanchego/utils/units" + "github.com/ava-labs/avalanchego/utils/wrappers" +) + +const ( + codecVersion uint16 = 0 + maxMessageSize = 512 * units.KiB + maxSliceLen = maxMessageSize +) + +// Codec does serialization and deserialization +var c codec.Manager + +func init() { + c = codec.NewManager(maxMessageSize) + lc := linearcodec.New(reflectcodec.DefaultTagName, maxSliceLen) + + errs := wrappers.Errs{} + errs.Add( + lc.RegisterType(&Txs{}), + c.RegisterCodec(codecVersion, lc), + ) + if errs.Errored() { + panic(errs.Err) + } +} diff --git a/plugin/evm/message/handler.go b/plugin/evm/message/handler.go new file mode 100644 index 0000000000..89d72f6c52 --- /dev/null +++ b/plugin/evm/message/handler.go @@ -0,0 +1,23 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package message + +import ( + "github.com/ethereum/go-ethereum/log" + + "github.com/ava-labs/avalanchego/ids" +) + +var _ Handler = NoopHandler{} + +type Handler interface { + HandleTxs(nodeID ids.ShortID, requestID uint32, msg *Txs) error +} + +type NoopHandler struct{} + +func (NoopHandler) HandleTxs(nodeID ids.ShortID, requestID uint32, _ *Txs) error { + log.Debug("dropping unexpected EthTxs message", "peerID", nodeID, "requestID", requestID) + return nil +} diff --git a/plugin/evm/message/handler_test.go b/plugin/evm/message/handler_test.go new file mode 100644 index 0000000000..2be3dceddc --- /dev/null +++ b/plugin/evm/message/handler_test.go @@ -0,0 +1,41 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package message + +import ( + "testing" + + "github.com/ava-labs/avalanchego/ids" + + "github.com/stretchr/testify/assert" +) + +type CounterHandler struct { + EthTxs int +} + +func (h *CounterHandler) HandleTxs(ids.ShortID, uint32, *Txs) error { + h.EthTxs++ + return nil +} + +func TestHandleTxs(t *testing.T) { + assert := assert.New(t) + + handler := CounterHandler{} + msg := Txs{} + + err := msg.Handle(&handler, ids.ShortEmpty, 0) + assert.NoError(err) + assert.Equal(1, handler.EthTxs) +} + +func TestNoopHandler(t *testing.T) { + assert := assert.New(t) + + handler := NoopHandler{} + + err := handler.HandleTxs(ids.ShortEmpty, 0, nil) + assert.NoError(err) +} diff --git a/plugin/evm/message/message.go b/plugin/evm/message/message.go new file mode 100644 index 0000000000..c4e18b5251 --- /dev/null +++ b/plugin/evm/message/message.go @@ -0,0 +1,74 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package message + +import ( + "errors" + + "github.com/ethereum/go-ethereum/common" + + "github.com/ava-labs/avalanchego/ids" + "github.com/ava-labs/avalanchego/utils/units" +) + +const ( + // EthMsgSoftCapSize is the ideal size of encoded transaction bytes we send in + // any [EthTxs] message. We do not limit inbound messages to + // this size, however. Max inbound message size is enforced by the codec + // (512KB). + EthMsgSoftCapSize = common.StorageSize(64 * units.KiB) +) + +var ( + _ Message = &Txs{} + + errUnexpectedCodecVersion = errors.New("unexpected codec version") +) + +type Message interface { + // Handle this message with the correct message handler + Handle(handler Handler, nodeID ids.ShortID, requestID uint32) error + + // initialize should be called whenever a message is built or parsed + initialize([]byte) + + // Bytes returns the binary representation of this message + // + // Bytes should only be called after being initialized + Bytes() []byte +} + +type message []byte + +func (m *message) initialize(bytes []byte) { *m = bytes } +func (m *message) Bytes() []byte { return *m } + +type Txs struct { + message + + Txs []byte `serialize:"true"` +} + +func (msg *Txs) Handle(handler Handler, nodeID ids.ShortID, requestID uint32) error { + return handler.HandleTxs(nodeID, requestID, msg) +} + +func Parse(bytes []byte) (Message, error) { + var msg Message + version, err := c.Unmarshal(bytes, &msg) + if err != nil { + return nil, err + } + if version != codecVersion { + return nil, errUnexpectedCodecVersion + } + msg.initialize(bytes) + return msg, nil +} + +func Build(msg Message) ([]byte, error) { + bytes, err := c.Marshal(codecVersion, &msg) + msg.initialize(bytes) + return bytes, err +} diff --git a/plugin/evm/message/message_test.go b/plugin/evm/message/message_test.go new file mode 100644 index 0000000000..b1273872b7 --- /dev/null +++ b/plugin/evm/message/message_test.go @@ -0,0 +1,52 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package message + +import ( + "testing" + + "github.com/ava-labs/avalanchego/utils" + "github.com/ava-labs/avalanchego/utils/units" + + "github.com/stretchr/testify/assert" +) + +func TestEthTxs(t *testing.T) { + assert := assert.New(t) + + msg := []byte("blah") + builtMsg := Txs{ + Txs: msg, + } + builtMsgBytes, err := Build(&builtMsg) + assert.NoError(err) + assert.Equal(builtMsgBytes, builtMsg.Bytes()) + + parsedMsgIntf, err := Parse(builtMsgBytes) + assert.NoError(err) + assert.Equal(builtMsgBytes, parsedMsgIntf.Bytes()) + + parsedMsg, ok := parsedMsgIntf.(*Txs) + assert.True(ok) + + assert.Equal(msg, parsedMsg.Txs) +} + +func TestEthTxsTooLarge(t *testing.T) { + assert := assert.New(t) + + builtMsg := Txs{ + Txs: utils.RandomBytes(1024 * units.KiB), + } + _, err := Build(&builtMsg) + assert.Error(err) +} + +func TestParseGibberish(t *testing.T) { + assert := assert.New(t) + + randomBytes := utils.RandomBytes(256 * units.KiB) + _, err := Parse(randomBytes) + assert.Error(err) +} diff --git a/plugin/evm/network.go b/plugin/evm/network.go new file mode 100644 index 0000000000..e5c2761dcc --- /dev/null +++ b/plugin/evm/network.go @@ -0,0 +1,515 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "container/heap" + "math/big" + "sync" + "time" + + "github.com/ava-labs/avalanchego/cache" + "github.com/ava-labs/avalanchego/ids" + "github.com/ava-labs/avalanchego/snow" + + commonEng "github.com/ava-labs/avalanchego/snow/engine/common" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/plugin/evm/message" + + subnetEVM "github.com/ava-labs/subnet-evm/chain" +) + +const ( + // We allow [recentCacheSize] to be fairly large because we only store hashes + // in the cache, not entire transactions. + recentCacheSize = 512 + + // [ethTxsGossipInterval] is how often we attempt to gossip newly seen + // transactions to other nodes. + ethTxsGossipInterval = 1 * time.Second +) + +type Network interface { + // Message handling + AppRequestFailed(nodeID ids.ShortID, requestID uint32) error + AppRequest(nodeID ids.ShortID, requestID uint32, deadline time.Time, msgBytes []byte) error + AppResponse(nodeID ids.ShortID, requestID uint32, msgBytes []byte) error + AppGossip(nodeID ids.ShortID, msgBytes []byte) error + + // Gossip entrypoints + GossipEthTxs(txs []*types.Transaction) error +} + +func (vm *VM) AppRequest(nodeID ids.ShortID, requestID uint32, deadline time.Time, request []byte) error { + return vm.network.AppRequest(nodeID, requestID, deadline, request) +} + +func (vm *VM) AppResponse(nodeID ids.ShortID, requestID uint32, response []byte) error { + return vm.network.AppResponse(nodeID, requestID, response) +} + +func (vm *VM) AppRequestFailed(nodeID ids.ShortID, requestID uint32) error { + return vm.network.AppRequestFailed(nodeID, requestID) +} + +func (vm *VM) AppGossip(nodeID ids.ShortID, msg []byte) error { + return vm.network.AppGossip(nodeID, msg) +} + +// NewNetwork creates a new Network based on the [vm.chainConfig]. +func (vm *VM) NewNetwork(appSender commonEng.AppSender) Network { + if vm.chainConfig.SubnetEVMTimestamp != nil { + return vm.newPushNetwork( + time.Unix(vm.chainConfig.SubnetEVMTimestamp.Int64(), 0), + vm.config, + appSender, + vm.chain, + ) + } + + return &noopNetwork{} +} + +type pushNetwork struct { + ctx *snow.Context + gossipActivationTime time.Time + config Config + + appSender commonEng.AppSender + chain *subnetEVM.ETHChain + + gossipHandler message.Handler + + // We attempt to batch transactions we need to gossip to avoid runaway + // amplification of mempol chatter. + ethTxsToGossipChan chan []*types.Transaction + ethTxsToGossip map[common.Hash]*types.Transaction + lastGossiped time.Time + shutdownChan chan struct{} + shutdownWg *sync.WaitGroup + + // [recentEthTxs] prevent us from over-gossiping the + // same transaction in a short period of time. + recentEthTxs *cache.LRU +} + +func (vm *VM) newPushNetwork( + activationTime time.Time, + config Config, + appSender commonEng.AppSender, + chain *subnetEVM.ETHChain, +) Network { + net := &pushNetwork{ + ctx: vm.ctx, + gossipActivationTime: activationTime, + config: config, + appSender: appSender, + chain: chain, + ethTxsToGossipChan: make(chan []*types.Transaction), + ethTxsToGossip: make(map[common.Hash]*types.Transaction), + shutdownChan: vm.shutdownChan, + shutdownWg: &vm.shutdownWg, + recentEthTxs: &cache.LRU{Size: recentCacheSize}, + } + net.gossipHandler = &GossipHandler{ + vm: vm, + net: net, + } + net.awaitEthTxGossip() + return net +} + +// queueExecutableTxs attempts to select up to [maxTxs] from the tx pool for +// regossiping. +// +// We assume that [txs] contains an array of nonce-ordered transactions for a given +// account. This array of transactions can have gaps and start at a nonce lower +// than the current state of an account. +func (n *pushNetwork) queueExecutableTxs(state *state.StateDB, baseFee *big.Int, txs map[common.Address]types.Transactions, maxTxs int) types.Transactions { + // Setup heap for transactions + heads := make(types.TxByPriceAndTime, 0, len(txs)) + for addr, accountTxs := range txs { + // Short-circuit here to avoid performing an unnecessary state lookup + if len(accountTxs) == 0 { + continue + } + + // Ensure any transactions regossiped are immediately executable + var ( + currentNonce = state.GetNonce(addr) + tx *types.Transaction + ) + for _, accountTx := range accountTxs { + // The tx pool may be out of sync with current state, so we iterate + // through the account transactions until we get to one that is + // executable. + if accountTx.Nonce() == currentNonce { + tx = accountTx + break + } + // There may be gaps in the tx pool and we could jump past the nonce we'd + // like to execute. + if accountTx.Nonce() > currentNonce { + break + } + } + if tx == nil { + continue + } + + // Don't try to regossip a transaction too frequently + if time.Since(tx.FirstSeen()) < n.config.TxRegossipFrequency.Duration { + continue + } + + // Ensure the fee the transaction pays is valid at tip + wrapped, err := types.NewTxWithMinerFee(tx, baseFee) + if err != nil { + log.Debug( + "not queuing tx for regossip", + "tx", tx.Hash(), + "err", err, + ) + continue + } + + heads = append(heads, wrapped) + } + heap.Init(&heads) + + // Add up to [maxTxs] transactions to be gossiped + queued := make([]*types.Transaction, 0, maxTxs) + for len(heads) > 0 && len(queued) < maxTxs { + tx := heads[0].Tx + queued = append(queued, tx) + heap.Pop(&heads) + } + + return queued +} + +// queueRegossipTxs finds the best transactions in the mempool and adds up to +// [TxRegossipMaxSize] of them to [ethTxsToGossip]. +func (n *pushNetwork) queueRegossipTxs() types.Transactions { + txPool := n.chain.GetTxPool() + + // Fetch all pending transactions + pending := txPool.Pending(true) + + // Split the pending transactions into locals and remotes + localTxs := make(map[common.Address]types.Transactions) + remoteTxs := pending + for _, account := range txPool.Locals() { + if txs := remoteTxs[account]; len(txs) > 0 { + delete(remoteTxs, account) + localTxs[account] = txs + } + } + + // Add best transactions to be gossiped (preferring local txs) + tip := n.chain.BlockChain().CurrentBlock() + state, err := n.chain.BlockChain().StateAt(tip.Root()) + if err != nil || state == nil { + log.Debug( + "could not get state at tip", + "tip", tip.Hash(), + "err", err, + ) + return nil + } + localQueued := n.queueExecutableTxs(state, tip.BaseFee(), localTxs, n.config.TxRegossipMaxSize) + localCount := len(localQueued) + if localCount >= n.config.TxRegossipMaxSize { + return localQueued + } + remoteQueued := n.queueExecutableTxs(state, tip.BaseFee(), remoteTxs, n.config.TxRegossipMaxSize-localCount) + return append(localQueued, remoteQueued...) +} + +// awaitEthTxGossip periodically gossips transactions that have been queued for +// gossip at least once every [ethTxsGossipInterval]. +func (n *pushNetwork) awaitEthTxGossip() { + n.shutdownWg.Add(1) + go n.ctx.Log.RecoverAndPanic(func() { + defer n.shutdownWg.Done() + + var ( + gossipTicker = time.NewTicker(ethTxsGossipInterval) + regossipTicker = time.NewTicker(n.config.TxRegossipFrequency.Duration) + ) + + for { + select { + case <-gossipTicker.C: + if attempted, err := n.gossipEthTxs(false); err != nil { + log.Warn( + "failed to send eth transactions", + "len(txs)", attempted, + "err", err, + ) + } + case <-regossipTicker.C: + for _, tx := range n.queueRegossipTxs() { + n.ethTxsToGossip[tx.Hash()] = tx + } + if attempted, err := n.gossipEthTxs(true); err != nil { + log.Warn( + "failed to send eth transactions", + "len(txs)", attempted, + "err", err, + ) + } + case txs := <-n.ethTxsToGossipChan: + for _, tx := range txs { + n.ethTxsToGossip[tx.Hash()] = tx + } + if attempted, err := n.gossipEthTxs(false); err != nil { + log.Warn( + "failed to send eth transactions", + "len(txs)", attempted, + "err", err, + ) + } + case <-n.shutdownChan: + return + } + } + }) +} + +func (n *pushNetwork) AppRequestFailed(nodeID ids.ShortID, requestID uint32) error { + return nil +} + +func (n *pushNetwork) AppRequest(nodeID ids.ShortID, requestID uint32, deadline time.Time, msgBytes []byte) error { + return nil +} + +func (n *pushNetwork) AppResponse(nodeID ids.ShortID, requestID uint32, msgBytes []byte) error { + return nil +} + +func (n *pushNetwork) AppGossip(nodeID ids.ShortID, msgBytes []byte) error { + return n.handle( + n.gossipHandler, + "Gossip", + nodeID, + 0, + msgBytes, + ) +} + +func (n *pushNetwork) sendEthTxs(txs []*types.Transaction) error { + if len(txs) == 0 { + return nil + } + + txBytes, err := rlp.EncodeToBytes(txs) + if err != nil { + return err + } + msg := message.Txs{ + Txs: txBytes, + } + msgBytes, err := message.Build(&msg) + if err != nil { + return err + } + + log.Trace( + "gossiping eth txs", + "len(txs)", len(txs), + "size(txs)", len(msg.Txs), + ) + return n.appSender.SendAppGossip(msgBytes) +} + +func (n *pushNetwork) gossipEthTxs(force bool) (int, error) { + if (!force && time.Since(n.lastGossiped) < ethTxsGossipInterval) || len(n.ethTxsToGossip) == 0 { + return 0, nil + } + n.lastGossiped = time.Now() + txs := make([]*types.Transaction, 0, len(n.ethTxsToGossip)) + for _, tx := range n.ethTxsToGossip { + txs = append(txs, tx) + delete(n.ethTxsToGossip, tx.Hash()) + } + + pool := n.chain.GetTxPool() + selectedTxs := make([]*types.Transaction, 0) + for _, tx := range txs { + txHash := tx.Hash() + txStatus := pool.Status([]common.Hash{txHash})[0] + if txStatus != core.TxStatusPending { + continue + } + + if n.config.RemoteTxGossipOnlyEnabled && pool.HasLocal(txHash) { + continue + } + + // We check [force] outside of the if statement to avoid an unnecessary + // cache lookup. + if !force { + if _, has := n.recentEthTxs.Get(txHash); has { + continue + } + } + n.recentEthTxs.Put(txHash, nil) + + selectedTxs = append(selectedTxs, tx) + } + + if len(selectedTxs) == 0 { + return 0, nil + } + + // Attempt to gossip [selectedTxs] + msgTxs := make([]*types.Transaction, 0) + msgTxsSize := common.StorageSize(0) + for _, tx := range selectedTxs { + size := tx.Size() + if msgTxsSize+size > message.EthMsgSoftCapSize { + if err := n.sendEthTxs(msgTxs); err != nil { + return len(selectedTxs), err + } + msgTxs = msgTxs[:0] + msgTxsSize = 0 + } + msgTxs = append(msgTxs, tx) + msgTxsSize += size + } + + // Send any remaining [msgTxs] + return len(selectedTxs), n.sendEthTxs(msgTxs) +} + +// GossipEthTxs enqueues the provided [txs] for gossiping. At some point, the +// [pushNetwork] will attempt to gossip the provided txs to other nodes +// (usually right away if not under load). +// +// NOTE: We never return a non-nil error from this function but retain the +// option to do so in case it becomes useful. +func (n *pushNetwork) GossipEthTxs(txs []*types.Transaction) error { + if time.Now().Before(n.gossipActivationTime) { + log.Trace( + "not gossiping eth txs before the gossiping activation time", + "len(txs)", len(txs), + ) + return nil + } + + select { + case n.ethTxsToGossipChan <- txs: + case <-n.shutdownChan: + } + return nil +} + +func (n *pushNetwork) handle( + handler message.Handler, + handlerName string, + nodeID ids.ShortID, + requestID uint32, + msgBytes []byte, +) error { + log.Trace( + "App message handler called", + "handler", handlerName, + "peerID", nodeID, + "requestID", requestID, + "len(msg)", len(msgBytes), + ) + + if time.Now().Before(n.gossipActivationTime) { + log.Trace("App message called before activation time") + return nil + } + + msg, err := message.Parse(msgBytes) + if err != nil { + log.Trace( + "dropping App message due to failing to parse message", + "err", err, + ) + return nil + } + + return msg.Handle(handler, nodeID, requestID) +} + +type GossipHandler struct { + message.NoopHandler + + vm *VM + net *pushNetwork +} + +func (h *GossipHandler) HandleTxs(nodeID ids.ShortID, _ uint32, msg *message.Txs) error { + log.Trace( + "AppGossip called with EthTxs", + "peerID", nodeID, + "size(txs)", len(msg.Txs), + ) + + if len(msg.Txs) == 0 { + log.Trace( + "AppGossip received empty EthTxs Message", + "peerID", nodeID, + ) + return nil + } + + // The maximum size of this encoded object is enforced by the codec. + txs := make([]*types.Transaction, 0) + if err := rlp.DecodeBytes(msg.Txs, &txs); err != nil { + log.Trace( + "AppGossip provided invalid txs", + "peerID", nodeID, + "err", err, + ) + return nil + } + errs := h.net.chain.GetTxPool().AddRemotes(txs) + for i, err := range errs { + if err != nil { + log.Trace( + "AppGossip failed to add to mempool", + "err", err, + "tx", txs[i].Hash(), + ) + } + } + return nil +} + +// noopNetwork should be used when gossip communication is not supported +type noopNetwork struct{} + +func (n *noopNetwork) AppRequestFailed(nodeID ids.ShortID, requestID uint32) error { + return nil +} + +func (n *noopNetwork) AppRequest(nodeID ids.ShortID, requestID uint32, deadline time.Time, msgBytes []byte) error { + return nil +} + +func (n *noopNetwork) AppResponse(nodeID ids.ShortID, requestID uint32, msgBytes []byte) error { + return nil +} + +func (n *noopNetwork) AppGossip(nodeID ids.ShortID, msgBytes []byte) error { + return nil +} + +func (n *noopNetwork) GossipEthTxs(txs []*types.Transaction) error { + return nil +} diff --git a/plugin/evm/service.go b/plugin/evm/service.go new file mode 100644 index 0000000000..7e84fe0d5a --- /dev/null +++ b/plugin/evm/service.go @@ -0,0 +1,56 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "context" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + ethcrypto "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" +) + +// test constants +const ( + GenesisTestAddr = "0x751a0b96e1042bee789452ecb20253fba40dbe85" + GenesisTestKey = "0xabd71b35d559563fea757f0f5edbde286fb8c043105b15abb7cd57189306d7d1" +) + +// Web3API offers helper API methods +type Web3API struct{} + +// ClientVersion returns the version of the vm running +func (s *Web3API) ClientVersion() string { return Version } + +// Sha3 returns the bytes returned by hashing [input] with Keccak256 +func (s *Web3API) Sha3(input hexutil.Bytes) hexutil.Bytes { return ethcrypto.Keccak256(input) } + +// SnowmanAPI introduces snowman specific functionality to the evm +type SnowmanAPI struct{ vm *VM } + +// GetAcceptedFrontReply defines the reply that will be sent from the +// GetAcceptedFront API call +type GetAcceptedFrontReply struct { + Hash common.Hash `json:"hash"` + Number *big.Int `json:"number"` +} + +// GetAcceptedFront returns the last accepted block's hash and height +func (api *SnowmanAPI) GetAcceptedFront(ctx context.Context) (*GetAcceptedFrontReply, error) { + blk := api.vm.chain.LastAcceptedBlock() + return &GetAcceptedFrontReply{ + Hash: blk.Hash(), + Number: blk.Number(), + }, nil +} + +// IssueBlock to the chain +func (api *SnowmanAPI) IssueBlock(ctx context.Context) error { + log.Info("Issuing a new block") + + api.vm.builder.signalTxsReady() + return nil +} diff --git a/plugin/evm/static_service.go b/plugin/evm/static_service.go new file mode 100644 index 0000000000..39667349c1 --- /dev/null +++ b/plugin/evm/static_service.go @@ -0,0 +1,96 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "errors" + "net/http" + + "github.com/ava-labs/avalanchego/utils/formatting" + "github.com/ava-labs/subnet-evm/core" + "github.com/ethereum/go-ethereum/common" +) + +var ( + errNoGenesisData = errors.New("no genesis data provided") + errNoConfig = errors.New("no config provided in genesis") + errNoChainID = errors.New("no chain ID provided in genesis config") + errInvalidChainID = errors.New("chainID must be greater than 0") + errNoAlloc = errors.New("no alloc table provided in genesis") +) + +// StaticService defines the static API services exposed by the evm +type StaticService struct{} + +func CreateStaticService() *StaticService { + return &StaticService{} +} + +// BuildGenesisArgs are arguments for BuildGenesis +type BuildGenesisArgs struct { + GenesisData *core.Genesis `json:"genesisData"` + Encoding formatting.Encoding `json:"encoding"` +} + +// BuildGenesisReply is the reply from BuildGenesis +type BuildGenesisReply struct { + GenesisBytes string `json:"genesisBytes"` + Encoding formatting.Encoding `json:"encoding"` +} + +// BuildGenesis constructs a genesis file. +func (ss *StaticService) BuildGenesis(_ *http.Request, args *BuildGenesisArgs, reply *BuildGenesisReply) error { + // check for critical fields first + switch { + case args.GenesisData == nil: + return errNoGenesisData + case args.GenesisData.Config == nil: + return errNoConfig + case args.GenesisData.Config.ChainID == nil: + return errNoChainID + case args.GenesisData.Config.ChainID.Cmp(common.Big1) == -1: + return errInvalidChainID + case args.GenesisData.Alloc == nil: + return errNoAlloc + } + + bytes, err := args.GenesisData.MarshalJSON() + if err != nil { + return err + } + bytesStr, err := formatting.EncodeWithChecksum(args.Encoding, bytes) + if err != nil { + return err + } + reply.GenesisBytes = bytesStr + reply.Encoding = args.Encoding + return nil +} + +// DecodeGenesisArgs are arguments for DecodeGenesis +type DecodeGenesisArgs struct { + GenesisBytes string `json:"genesisBytes"` + Encoding formatting.Encoding `json:"encoding"` +} + +// DecodeGenesisReply is the reply from DecodeGenesis +type DecodeGenesisReply struct { + Genesis *core.Genesis `json:"genesisData"` + Encoding formatting.Encoding `json:"encoding"` +} + +// BuildGenesis constructs a genesis file. +func (ss *StaticService) DecodeGenesis(_ *http.Request, args *DecodeGenesisArgs, reply *DecodeGenesisReply) error { + bytesStr, err := formatting.Decode(args.Encoding, args.GenesisBytes) + if err != nil { + return err + } + genesis := core.Genesis{} + if err := genesis.UnmarshalJSON(bytesStr); err != nil { + return err + } + reply.Genesis = &genesis + reply.Encoding = args.Encoding + return nil +} diff --git a/plugin/evm/static_service_test.go b/plugin/evm/static_service_test.go new file mode 100644 index 0000000000..883a709f8c --- /dev/null +++ b/plugin/evm/static_service_test.go @@ -0,0 +1,93 @@ +// Copyright (C) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "encoding/json" + "math/big" + "testing" + + "github.com/ava-labs/avalanchego/utils/formatting" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/params" + "github.com/stretchr/testify/assert" +) + +var testGenesisJSON = "{\"config\":{\"chainId\":43111,\"homesteadBlock\":0,\"eip150Block\":0,\"eip150Hash\":\"0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0\",\"eip155Block\":0,\"eip158Block\":0,\"byzantiumBlock\":0,\"constantinopleBlock\":0,\"petersburgBlock\":0,\"istanbulBlock\":0,\"muirGlacierBlock\":0,\"subnetEVMTimestamp\":0},\"nonce\":\"0x0\",\"timestamp\":\"0x0\",\"extraData\":\"0x00\",\"gasLimit\":\"0x5f5e100\",\"difficulty\":\"0x0\",\"mixHash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\",\"coinbase\":\"0x0000000000000000000000000000000000000000\",\"alloc\":{\"0100000000000000000000000000000000000000\":{\"code\":\"0x7300000000000000000000000000000000000000003014608060405260043610603d5760003560e01c80631e010439146042578063b6510bb314606e575b600080fd5b605c60048036036020811015605657600080fd5b503560b1565b60408051918252519081900360200190f35b818015607957600080fd5b5060af60048036036080811015608e57600080fd5b506001600160a01b03813516906020810135906040810135906060013560b6565b005b30cd90565b836001600160a01b031681836108fc8690811502906040516000604051808303818888878c8acf9550505050505015801560f4573d6000803e3d6000fd5b505050505056fea26469706673582212201eebce970fe3f5cb96bf8ac6ba5f5c133fc2908ae3dcd51082cfee8f583429d064736f6c634300060a0033\",\"balance\":\"0x0\"}},\"number\":\"0x0\",\"gasUsed\":\"0x0\",\"parentHash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\"}" + +func TestBuildGenesis(t *testing.T) { + ss := CreateStaticService() + + genesis := &core.Genesis{} + if err := json.Unmarshal([]byte(testGenesisJSON), genesis); err != nil { + t.Fatalf("Problem unmarshaling genesis JSON: %s", err) + } + + // add test allocs + testAlloc := core.GenesisAlloc{ + testEthAddrs[0]: core.GenesisAccount{Balance: genesisBalance}, + testEthAddrs[1]: core.GenesisAccount{Balance: genesisBalance}, + } + genesis.Alloc = testAlloc + genesis.Config.FeeConfig = params.DefaultFeeConfig + testGasLimit := big.NewInt(999999) + genesis.Config.FeeConfig.GasLimit = testGasLimit + + args := &BuildGenesisArgs{GenesisData: genesis} + reply := &BuildGenesisReply{} + err := ss.BuildGenesis(nil, args, reply) + if err != nil { + t.Fatalf("Failed to create test genesis") + } + // now decode + genesisBytes, err := formatting.Decode(reply.Encoding, reply.GenesisBytes) + if err != nil { + t.Fatalf("Failed to decode genesis bytes: %s", err) + } + // unmarshal it again + decodedGenesis := &core.Genesis{} + decodedGenesis.UnmarshalJSON(genesisBytes) + // test + assert.Equal(t, testGasLimit, decodedGenesis.Config.GetFeeConfig().GasLimit) + assert.Equal(t, testAlloc, decodedGenesis.Alloc) +} + +func TestDecodeGenesis(t *testing.T) { + ss := CreateStaticService() + + genesis := &core.Genesis{} + if err := json.Unmarshal([]byte(testGenesisJSON), genesis); err != nil { + t.Fatalf("Problem unmarshaling genesis JSON: %s", err) + } + + // add test allocs + testAlloc := core.GenesisAlloc{ + testEthAddrs[0]: core.GenesisAccount{Balance: genesisBalance}, + testEthAddrs[1]: core.GenesisAccount{Balance: genesisBalance}, + } + genesis.Alloc = testAlloc + genesis.Config.FeeConfig = params.DefaultFeeConfig + testGasLimit := big.NewInt(999999) + genesis.Config.FeeConfig.GasLimit = testGasLimit + + args := &BuildGenesisArgs{GenesisData: genesis} + reply := &BuildGenesisReply{} + err := ss.BuildGenesis(nil, args, reply) + if err != nil { + t.Fatalf("Failed to create test genesis") + } + + // now decode + decArgs := &DecodeGenesisArgs{GenesisBytes: reply.GenesisBytes} + decReply := &DecodeGenesisReply{} + err = ss.DecodeGenesis(nil, decArgs, decReply) + if err != nil { + t.Fatalf("Failed to create test genesis") + } + decodedGenesis := decReply.Genesis + + // test + assert.Equal(t, testGasLimit, decodedGenesis.Config.GetFeeConfig().GasLimit) + assert.Equal(t, testAlloc, decodedGenesis.Alloc) +} diff --git a/plugin/evm/status.go b/plugin/evm/status.go new file mode 100644 index 0000000000..14d1b009a7 --- /dev/null +++ b/plugin/evm/status.go @@ -0,0 +1,82 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "errors" + "fmt" +) + +var ( + errUnknownStatus = errors.New("unknown status") +) + +// Status ... +type Status uint32 + +// List of possible status values +// [Unknown] Zero value, means the status is not known +// [Dropped] means the transaction was in the mempool, but was dropped because it failed verification +// [Processing] means the transaction is in the mempool +// [Accepted] means the transaction was accepted +const ( + Unknown Status = iota + Dropped + Processing + Accepted +) + +// MarshalJSON ... +func (s Status) MarshalJSON() ([]byte, error) { + if err := s.Valid(); err != nil { + return nil, err + } + return []byte(fmt.Sprintf("%q", s)), nil +} + +// UnmarshalJSON ... +func (s *Status) UnmarshalJSON(b []byte) error { + str := string(b) + if str == "null" { + return nil + } + switch str { + case `"Unknown"`: + *s = Unknown + case `"Dropped"`: + *s = Dropped + case `"Processing"`: + *s = Processing + case `"Accepted"`: + *s = Accepted + default: + return errUnknownStatus + } + return nil +} + +// Valid returns nil if the status is a valid status. +func (s Status) Valid() error { + switch s { + case Unknown, Dropped, Processing, Accepted: + return nil + default: + return errUnknownStatus + } +} + +func (s Status) String() string { + switch s { + case Unknown: + return "Unknown" + case Dropped: + return "Dropped" + case Processing: + return "Processing" + case Accepted: + return "Accepted" + default: + return "Invalid status" + } +} diff --git a/plugin/evm/version.go b/plugin/evm/version.go new file mode 100644 index 0000000000..e8dc1caeb1 --- /dev/null +++ b/plugin/evm/version.go @@ -0,0 +1,21 @@ +// (c) 2019-2021, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "fmt" +) + +var ( + // GitCommit is set by the build script + GitCommit string + // Version is the version of Subnet EVM + Version string +) + +func init() { + if len(GitCommit) != 0 { + Version = fmt.Sprintf("%s@%s", Version, GitCommit) + } +} diff --git a/plugin/evm/vm.go b/plugin/evm/vm.go new file mode 100644 index 0000000000..9bcdf9adc4 --- /dev/null +++ b/plugin/evm/vm.go @@ -0,0 +1,611 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "encoding/json" + "errors" + "fmt" + "math/big" + "os" + "path/filepath" + "strings" + "sync" + "time" + + subnetEVM "github.com/ava-labs/subnet-evm/chain" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/eth/ethconfig" + "github.com/ava-labs/subnet-evm/metrics/prometheus" + "github.com/ava-labs/subnet-evm/node" + "github.com/ava-labs/subnet-evm/params" + + // Force-load tracer engine to trigger registration + // + // We must import this package (not referenced elsewhere) so that the native "callTracer" + // is added to a map of client-accessible tracers. In geth, this is done + // inside of cmd/geth. + _ "github.com/ava-labs/subnet-evm/eth/tracers/native" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + "github.com/ethereum/go-ethereum/rlp" + + avalancheRPC "github.com/gorilla/rpc/v2" + + "github.com/ava-labs/avalanchego/database" + "github.com/ava-labs/avalanchego/database/manager" + "github.com/ava-labs/avalanchego/database/prefixdb" + "github.com/ava-labs/avalanchego/database/versiondb" + "github.com/ava-labs/avalanchego/ids" + "github.com/ava-labs/avalanchego/snow" + "github.com/ava-labs/avalanchego/snow/choices" + "github.com/ava-labs/avalanchego/snow/consensus/snowman" + "github.com/ava-labs/avalanchego/snow/engine/snowman/block" + cjson "github.com/ava-labs/avalanchego/utils/json" + "github.com/ava-labs/avalanchego/utils/profiler" + "github.com/ava-labs/avalanchego/utils/timer/mockable" + "github.com/ava-labs/avalanchego/utils/wrappers" + "github.com/ava-labs/avalanchego/vms/components/chain" + + commonEng "github.com/ava-labs/avalanchego/snow/engine/common" + + avalancheJSON "github.com/ava-labs/avalanchego/utils/json" +) + +var _ block.ChainVM = &VM{} + +const ( + // Max time from current time allowed for blocks, before they're considered future blocks + // and fail verification + maxFutureBlockTime = 10 * time.Second + + decidedCacheSize = 100 + missingCacheSize = 50 + unverifiedCacheSize = 50 +) + +// Define the API endpoints for the VM +const ( + adminEndpoint = "/admin" + ethRPCEndpoint = "/rpc" + ethWSEndpoint = "/ws" +) + +var ( + // Set last accepted key to be longer than the keys used to store accepted block IDs. + lastAcceptedKey = []byte("last_accepted_key") + acceptedPrefix = []byte("snowman_accepted") + ethDBPrefix = []byte("ethdb") +) + +var ( + errEmptyBlock = errors.New("empty block") + errUnsupportedFXs = errors.New("unsupported feature extensions") + errInvalidBlock = errors.New("invalid block") + errInvalidNonce = errors.New("invalid nonce") + errUnclesUnsupported = errors.New("uncles unsupported") + errTxHashMismatch = errors.New("txs hash does not match header") + errUncleHashMismatch = errors.New("uncle hash mismatch") + errInvalidDifficulty = errors.New("invalid difficulty") + errInvalidMixDigest = errors.New("invalid mix digest") + errHeaderExtraDataTooBig = errors.New("header extra data too big") + errNilBaseFeeSubnetEVM = errors.New("nil base fee is invalid after subnetEVM") + errNilBlockGasCostSubnetEVM = errors.New("nil blockGasCost is invalid after subnetEVM") + defaultLogLevel = log.LvlDebug +) + +var originalStderr *os.File + +func init() { + // Preserve [os.Stderr] prior to the call in plugin/main.go to plugin.Serve(...). + // Preserving the log level allows us to update the root handler while writing to the original + // [os.Stderr] that is being piped through to the logger via the rpcchainvm. + originalStderr = os.Stderr + log.Root().SetHandler(log.LvlFilterHandler(log.LvlDebug, log.StreamHandler(originalStderr, log.TerminalFormat(false)))) +} + +// VM implements the snowman.ChainVM interface +type VM struct { + ctx *snow.Context + // *chain.State helps to implement the VM interface by wrapping blocks + // with an efficient caching layer. + *chain.State + + config Config + + networkID uint64 + genesisHash common.Hash + chain *subnetEVM.ETHChain + chainConfig *params.ChainConfig + // [db] is the VM's current database managed by ChainState + db *versiondb.Database + // [chaindb] is the database supplied to the Ethereum backend + chaindb Database + // [acceptedBlockDB] is the database to store the last accepted + // block. + acceptedBlockDB database.Database + + builder *blockBuilder + + network Network + + clock mockable.Clock + + shutdownChan chan struct{} + shutdownWg sync.WaitGroup + + // Continuous Profiler + profiler profiler.ContinuousProfiler + + bootstrapped bool +} + +func (vm *VM) Connected(nodeID ids.ShortID) error { + return nil // noop +} + +func (vm *VM) Disconnected(nodeID ids.ShortID) error { + return nil // noop +} + +// SetLogLevel sets the log level with the original [os.StdErr] interface +func (vm *VM) setLogLevel(logLevel log.Lvl) { + log.Root().SetHandler(log.LvlFilterHandler(logLevel, log.StreamHandler(originalStderr, log.TerminalFormat(false)))) +} + +/* + ****************************************************************************** + ********************************* Snowman API ******************************** + ****************************************************************************** + */ + +// implements SnowmanPlusPlusVM interface +func (vm *VM) GetActivationTime() time.Time { + return time.Unix(vm.chainConfig.SubnetEVMTimestamp.Int64(), 0) +} + +// Initialize implements the snowman.ChainVM interface +func (vm *VM) Initialize( + ctx *snow.Context, + dbManager manager.Manager, + genesisBytes []byte, + upgradeBytes []byte, + configBytes []byte, + toEngine chan<- commonEng.Message, + fxs []*commonEng.Fx, + appSender commonEng.AppSender, +) error { + vm.config.SetDefaults() + if len(configBytes) > 0 { + if err := json.Unmarshal(configBytes, &vm.config); err != nil { + return fmt.Errorf("failed to unmarshal config %s: %w", string(configBytes), err) + } + } + if b, err := json.Marshal(vm.config); err == nil { + log.Info("Initializing Subnet EVM VM", "Version", Version, "Config", string(b)) + } else { + // Log a warning message since we have already successfully unmarshalled into the struct + log.Warn("Problem initializing Subnet EVM VM", "Version", Version, "Config", string(b), "err", err) + } + + if len(fxs) > 0 { + return errUnsupportedFXs + } + + metrics.Enabled = vm.config.MetricsEnabled + metrics.EnabledExpensive = vm.config.MetricsExpensiveEnabled + + vm.shutdownChan = make(chan struct{}, 1) + vm.ctx = ctx + baseDB := dbManager.Current().Database + // Use NewNested rather than New so that the structure of the database + // remains the same regardless of the provided baseDB type. + vm.chaindb = Database{prefixdb.NewNested(ethDBPrefix, baseDB)} + vm.db = versiondb.New(baseDB) + vm.acceptedBlockDB = prefixdb.New(acceptedPrefix, vm.db) + + // Set log level + logLevel := defaultLogLevel + if vm.config.LogLevel != "" { + configLogLevel, err := log.LvlFromString(vm.config.LogLevel) + if err != nil { + return fmt.Errorf("failed to initialize logger due to: %w ", err) + } + logLevel = configLogLevel + } + vm.setLogLevel(logLevel) + + g := new(core.Genesis) + if err := json.Unmarshal(genesisBytes, g); err != nil { + return err + } + + if g.Config == nil { + g.Config = params.SubnetEVMDefaultChainConfig + } + + if g.Config.FeeConfig == nil { + g.Config.FeeConfig = params.DefaultFeeConfig + } + + ethConfig := ethconfig.NewDefaultConfig() + // change network ID + ethConfig.NetworkId = g.Config.ChainID.Uint64() + ethConfig.Genesis = g + // Set minimum price for mining and default gas price oracle value to the min + // gas price to prevent so transactions and blocks all use the correct fees + ethConfig.RPCGasCap = vm.config.RPCGasCap + ethConfig.RPCEVMTimeout = vm.config.APIMaxDuration.Duration + ethConfig.RPCTxFeeCap = vm.config.RPCTxFeeCap + ethConfig.TxPool.NoLocals = !vm.config.LocalTxsEnabled + ethConfig.AllowUnfinalizedQueries = vm.config.AllowUnfinalizedQueries + ethConfig.AllowUnprotectedTxs = vm.config.AllowUnprotectedTxs + ethConfig.Preimages = vm.config.Preimages + ethConfig.Pruning = vm.config.Pruning + ethConfig.SnapshotAsync = vm.config.SnapshotAsync + ethConfig.SnapshotVerify = vm.config.SnapshotVerify + + vm.chainConfig = g.Config + vm.networkID = ethConfig.NetworkId + + nodecfg := node.Config{ + SubnetEVMVersion: Version, + KeyStoreDir: vm.config.KeystoreDirectory, + ExternalSigner: vm.config.KeystoreExternalSigner, + InsecureUnlockAllowed: vm.config.KeystoreInsecureUnlockAllowed, + } + + // Attempt to load last accepted block to determine if it is necessary to + // initialize state with the genesis block. + lastAcceptedBytes, lastAcceptedErr := vm.acceptedBlockDB.Get(lastAcceptedKey) + var lastAcceptedHash common.Hash + switch { + case lastAcceptedErr == database.ErrNotFound: + // // Set [lastAcceptedHash] to the genesis block hash. + lastAcceptedHash = ethConfig.Genesis.ToBlock(nil).Hash() + case lastAcceptedErr != nil: + return fmt.Errorf("failed to get last accepted block ID due to: %w", lastAcceptedErr) + case len(lastAcceptedBytes) != common.HashLength: + return fmt.Errorf("last accepted bytes should have been length %d, but found %d", common.HashLength, len(lastAcceptedBytes)) + default: + lastAcceptedHash = common.BytesToHash(lastAcceptedBytes) + } + ethChain, err := subnetEVM.NewETHChain(ðConfig, &nodecfg, vm.chaindb, vm.config.EthBackendSettings(), lastAcceptedHash, &vm.clock) + if err != nil { + return err + } + vm.chain = ethChain + lastAccepted := vm.chain.LastAcceptedBlock() + + // start goroutines to update the tx pool gas minimum gas price when upgrades go into effect + vm.handleGasPriceUpdates() + + // initialize new gossip network + vm.network = vm.NewNetwork(appSender) + + // start goroutines to manage block building + // + // NOTE: gossip network must be initialized first otherwie ETH tx gossip will + // not work. + vm.builder = vm.NewBlockBuilder(toEngine) + + vm.chain.Start() + + vm.genesisHash = vm.chain.GetGenesisBlock().Hash() + log.Info(fmt.Sprintf("lastAccepted = %s", lastAccepted.Hash().Hex())) + + vm.State = chain.NewState(&chain.Config{ + DecidedCacheSize: decidedCacheSize, + MissingCacheSize: missingCacheSize, + UnverifiedCacheSize: unverifiedCacheSize, + LastAcceptedBlock: &Block{ + id: ids.ID(lastAccepted.Hash()), + ethBlock: lastAccepted, + vm: vm, + status: choices.Accepted, + }, + GetBlockIDAtHeight: vm.getBlockIDAtHeight, + GetBlock: vm.getBlock, + UnmarshalBlock: vm.parseBlock, + BuildBlock: vm.buildBlock, + }) + + vm.builder.awaitSubmittedTxs() + go vm.ctx.Log.RecoverAndPanic(vm.startContinuousProfiler) + + // Only provide metrics if they are being populated. + if metrics.Enabled { + gatherer := prometheus.Gatherer(metrics.DefaultRegistry) + if err := ctx.Metrics.Register(gatherer); err != nil { + return err + } + } + + return nil +} + +// Bootstrapping notifies this VM that the consensus engine is performing +// bootstrapping +func (vm *VM) Bootstrapping() error { + vm.bootstrapped = false + return nil +} + +// Bootstrapped notifies this VM that the consensus engine has finished +// bootstrapping +func (vm *VM) Bootstrapped() error { + vm.bootstrapped = true + return nil +} + +// Shutdown implements the snowman.ChainVM interface +func (vm *VM) Shutdown() error { + if vm.ctx == nil { + return nil + } + + close(vm.shutdownChan) + vm.chain.Stop() + vm.shutdownWg.Wait() + return nil +} + +// buildBlock builds a block to be wrapped by ChainState +func (vm *VM) buildBlock() (snowman.Block, error) { + block, err := vm.chain.GenerateBlock() + vm.builder.handleGenerateBlock() + if err != nil { + return nil, err + } + + // Note: the status of block is set by ChainState + blk := &Block{ + id: ids.ID(block.Hash()), + ethBlock: block, + vm: vm, + } + + // Verify is called on a non-wrapped block here, such that this + // does not add [blk] to the processing blocks map in ChainState. + // + // TODO cache verification since Verify() will be called by the + // consensus engine as well. + // + // Note: this is only called when building a new block, so caching + // verification will only be a significant optimization for nodes + // that produce a large number of blocks. + // We call verify without writes here to avoid generating a reference + // to the blk state root in the triedb when we are going to call verify + // again from the consensus engine with writes enabled. + if err := blk.verify(false /*=writes*/); err != nil { + return nil, fmt.Errorf("block failed verification due to: %w", err) + } + + log.Debug(fmt.Sprintf("Built block %s", blk.ID())) + // Marks the current transactions from the mempool as being successfully issued + // into a block. + return blk, nil +} + +// parseBlock parses [b] into a block to be wrapped by ChainState. +func (vm *VM) parseBlock(b []byte) (snowman.Block, error) { + ethBlock := new(types.Block) + if err := rlp.DecodeBytes(b, ethBlock); err != nil { + return nil, err + } + + // Note: the status of block is set by ChainState + block := &Block{ + id: ids.ID(ethBlock.Hash()), + ethBlock: ethBlock, + vm: vm, + } + // Performing syntactic verification in ParseBlock allows for + // short-circuiting bad blocks before they are processed by the VM. + if err := block.syntacticVerify(); err != nil { + return nil, fmt.Errorf("syntactic block verification failed: %w", err) + } + return block, nil +} + +// getBlock attempts to retrieve block [id] from the VM to be wrapped +// by ChainState. +func (vm *VM) getBlock(id ids.ID) (snowman.Block, error) { + ethBlock := vm.chain.GetBlockByHash(common.Hash(id)) + // If [ethBlock] is nil, return [database.ErrNotFound] here + // so that the miss is considered cacheable. + if ethBlock == nil { + return nil, database.ErrNotFound + } + // Note: the status of block is set by ChainState + blk := &Block{ + id: ids.ID(ethBlock.Hash()), + ethBlock: ethBlock, + vm: vm, + } + return blk, nil +} + +// SetPreference sets what the current tail of the chain is +func (vm *VM) SetPreference(blkID ids.ID) error { + // Since each internal handler used by [vm.State] always returns a block + // with non-nil ethBlock value, GetBlockInternal should never return a + // (*Block) with a nil ethBlock value. + block, err := vm.GetBlockInternal(blkID) + if err != nil { + return fmt.Errorf("failed to set preference to %s: %w", blkID, err) + } + + return vm.chain.SetPreference(block.(*Block).ethBlock) +} + +// getBlockIDAtHeight retrieves the blkID of the canonical block at [blkHeight] +// if [blkHeight] is less than the height of the last accepted block, this will return +// a canonical block. Otherwise, it may return a blkID that has not yet been accepted. +func (vm *VM) getBlockIDAtHeight(blkHeight uint64) (ids.ID, error) { + ethBlock := vm.chain.GetBlockByNumber(blkHeight) + if ethBlock == nil { + return ids.ID{}, fmt.Errorf("could not find block at height: %d", blkHeight) + } + + return ids.ID(ethBlock.Hash()), nil +} + +func (vm *VM) Version() (string, error) { + return Version, nil +} + +// NewHandler returns a new Handler for a service where: +// * The handler's functionality is defined by [service] +// [service] should be a gorilla RPC service (see https://www.gorillatoolkit.org/pkg/rpc/v2) +// * The name of the service is [name] +// * The LockOption is the first element of [lockOption] +// By default the LockOption is WriteLock +// [lockOption] should have either 0 or 1 elements. Elements beside the first are ignored. +func newHandler(name string, service interface{}, lockOption ...commonEng.LockOption) (*commonEng.HTTPHandler, error) { + server := avalancheRPC.NewServer() + server.RegisterCodec(avalancheJSON.NewCodec(), "application/json") + server.RegisterCodec(avalancheJSON.NewCodec(), "application/json;charset=UTF-8") + if err := server.RegisterService(service, name); err != nil { + return nil, err + } + + var lock commonEng.LockOption = commonEng.WriteLock + if len(lockOption) != 0 { + lock = lockOption[0] + } + return &commonEng.HTTPHandler{LockOptions: lock, Handler: server}, nil +} + +// CreateHandlers makes new http handlers that can handle API calls +func (vm *VM) CreateHandlers() (map[string]*commonEng.HTTPHandler, error) { + handler := vm.chain.NewRPCHandler(vm.config.APIMaxDuration.Duration) + enabledAPIs := vm.config.EthAPIs() + vm.chain.AttachEthService(handler, enabledAPIs) + + primaryAlias, err := vm.ctx.BCLookup.PrimaryAlias(vm.ctx.ChainID) + if err != nil { + return nil, fmt.Errorf("failed to get primary alias for chain due to %w", err) + } + apis := make(map[string]*commonEng.HTTPHandler) + if vm.config.AdminAPIEnabled { + adminAPI, err := newHandler("admin", NewAdminService(vm, os.ExpandEnv(fmt.Sprintf("%s_subnet_evm_performance_%s", vm.config.AdminAPIDir, primaryAlias)))) + if err != nil { + return nil, fmt.Errorf("failed to register service for admin API due to %w", err) + } + apis[adminEndpoint] = adminAPI + enabledAPIs = append(enabledAPIs, "subnet-evm-admin") + } + + errs := wrappers.Errs{} + if vm.config.SnowmanAPIEnabled { + errs.Add(handler.RegisterName("snowman", &SnowmanAPI{vm})) + enabledAPIs = append(enabledAPIs, "snowman") + } + if vm.config.Web3APIEnabled { + errs.Add(handler.RegisterName("web3", &Web3API{})) + enabledAPIs = append(enabledAPIs, "web3") + } + if errs.Errored() { + return nil, errs.Err + } + + log.Info(fmt.Sprintf("Enabled APIs: %s", strings.Join(enabledAPIs, ", "))) + apis[ethRPCEndpoint] = &commonEng.HTTPHandler{ + LockOptions: commonEng.NoLock, + Handler: handler, + } + apis[ethWSEndpoint] = &commonEng.HTTPHandler{ + LockOptions: commonEng.NoLock, + Handler: handler.WebsocketHandlerWithDuration( + []string{"*"}, + vm.config.APIMaxDuration.Duration, + vm.config.WSCPURefillRate.Duration, + vm.config.WSCPUMaxStored.Duration, + ), + } + + return apis, nil +} + +// CreateStaticHandlers makes new http handlers that can handle API calls +func (vm *VM) CreateStaticHandlers() (map[string]*commonEng.HTTPHandler, error) { + server := avalancheRPC.NewServer() + codec := cjson.NewCodec() + server.RegisterCodec(codec, "application/json") + server.RegisterCodec(codec, "application/json;charset=UTF-8") + serviceName := "subnetevm" + if err := server.RegisterService(&StaticService{}, serviceName); err != nil { + return nil, err + } + + return map[string]*commonEng.HTTPHandler{ + "": { + LockOptions: commonEng.NoLock, + Handler: server, + }, + }, nil +} + +/* + ****************************************************************************** + *********************************** Helpers ********************************** + ****************************************************************************** + */ + +// GetCurrentNonce returns the nonce associated with the address at the +// preferred block +func (vm *VM) GetCurrentNonce(address common.Address) (uint64, error) { + // Note: current state uses the state of the preferred block. + state, err := vm.chain.CurrentState() + if err != nil { + return 0, err + } + return state.GetNonce(address), nil +} + +// currentRules returns the chain rules for the current block. +func (vm *VM) currentRules() params.Rules { + header := vm.chain.APIBackend().CurrentHeader() + return vm.chainConfig.AvalancheRules(header.Number, big.NewInt(int64(header.Time))) +} + +// getBlockValidator returns the block validator that should be used for a block that +// follows the ruleset defined by [rules] +func (vm *VM) getBlockValidator(rules params.Rules) BlockValidator { + if rules.IsSubnetEVM { + return subnetEVMBlockValidator + } + + return legacyBlockValidator +} + +func (vm *VM) startContinuousProfiler() { + // If the profiler directory is empty, return immediately + // without creating or starting a continuous profiler. + if vm.config.ContinuousProfilerDir == "" { + return + } + vm.profiler = profiler.NewContinuous( + filepath.Join(vm.config.ContinuousProfilerDir), + vm.config.ContinuousProfilerFrequency.Duration, + vm.config.ContinuousProfilerMaxFiles, + ) + defer vm.profiler.Shutdown() + + vm.shutdownWg.Add(1) + go func() { + defer vm.shutdownWg.Done() + log.Info("Dispatching continuous profiler", "dir", vm.config.ContinuousProfilerDir, "freq", vm.config.ContinuousProfilerFrequency, "maxFiles", vm.config.ContinuousProfilerMaxFiles) + err := vm.profiler.Dispatch() + if err != nil { + log.Error("continuous profiler failed", "err", err) + } + }() + // Wait for shutdownChan to be closed + <-vm.shutdownChan +} diff --git a/plugin/evm/vm_test.go b/plugin/evm/vm_test.go new file mode 100644 index 0000000000..ac5f28d8ae --- /dev/null +++ b/plugin/evm/vm_test.go @@ -0,0 +1,2199 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package evm + +import ( + "context" + "crypto/ecdsa" + "crypto/rand" + "encoding/json" + "errors" + "fmt" + "math/big" + "os" + "path/filepath" + "strings" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/trie" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + + "github.com/stretchr/testify/assert" + + "github.com/ava-labs/avalanchego/api/keystore" + "github.com/ava-labs/avalanchego/database/manager" + "github.com/ava-labs/avalanchego/ids" + "github.com/ava-labs/avalanchego/snow" + "github.com/ava-labs/avalanchego/snow/choices" + "github.com/ava-labs/avalanchego/utils/constants" + "github.com/ava-labs/avalanchego/utils/formatting" + "github.com/ava-labs/avalanchego/utils/logging" + "github.com/ava-labs/avalanchego/version" + "github.com/ava-labs/avalanchego/vms/components/chain" + + engCommon "github.com/ava-labs/avalanchego/snow/engine/common" + + "github.com/ava-labs/subnet-evm/consensus/dummy" + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/eth" + "github.com/ava-labs/subnet-evm/params" + "github.com/ava-labs/subnet-evm/rpc" + + accountKeystore "github.com/ava-labs/subnet-evm/accounts/keystore" +) + +var ( + testNetworkID uint32 = 10 + testCChainID = ids.ID{'c', 'c', 'h', 'a', 'i', 'n', 't', 'e', 's', 't'} + testXChainID = ids.ID{'t', 'e', 's', 't', 'x'} + testMinGasPrice int64 = 225_000_000_000 + testKeys []*ecdsa.PrivateKey + testEthAddrs []common.Address // testEthAddrs[i] corresponds to testKeys[i] + testAvaxAssetID = ids.ID{1, 2, 3} + username = "Johns" + password = "CjasdjhiPeirbSenfeI13" // #nosec G101 + // Use chainId: 43111, so that it does not overlap with any Avalanche ChainIDs, which may have their + // config overridden in vm.Initialize. + genesisJSONMuirGlacier = "{\"config\":{\"chainId\":43111,\"homesteadBlock\":0,\"eip150Block\":0,\"eip150Hash\":\"0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0\",\"eip155Block\":0,\"eip158Block\":0,\"byzantiumBlock\":0,\"constantinopleBlock\":0,\"petersburgBlock\":0,\"istanbulBlock\":0,\"muirGlacierBlock\":0},\"nonce\":\"0x0\",\"timestamp\":\"0x0\",\"extraData\":\"0x00\",\"gasLimit\":\"0x5f5e100\",\"difficulty\":\"0x0\",\"mixHash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\",\"coinbase\":\"0x0000000000000000000000000000000000000000\",\"alloc\":{\"0100000000000000000000000000000000000000\":{\"code\":\"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\",\"balance\":\"0x0\"}},\"number\":\"0x0\",\"gasUsed\":\"0x0\",\"parentHash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\"}" + genesisJSONSubnetEVM = "{\"config\":{\"chainId\":43111,\"homesteadBlock\":0,\"eip150Block\":0,\"eip150Hash\":\"0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0\",\"eip155Block\":0,\"eip158Block\":0,\"byzantiumBlock\":0,\"constantinopleBlock\":0,\"petersburgBlock\":0,\"istanbulBlock\":0,\"muirGlacierBlock\":0,\"subnetEVMTimestamp\":0},\"nonce\":\"0x0\",\"timestamp\":\"0x0\",\"extraData\":\"0x00\",\"gasLimit\":\"0x5f5e100\",\"difficulty\":\"0x0\",\"mixHash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\",\"coinbase\":\"0x0000000000000000000000000000000000000000\",\"alloc\":{\"0100000000000000000000000000000000000000\":{\"code\":\"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\",\"balance\":\"0x0\"}},\"number\":\"0x0\",\"gasUsed\":\"0x0\",\"parentHash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\"}" + firstTxAmount *big.Int + genesisBalance *big.Int +) + +func init() { + key1, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") + key2, _ := crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") + testKeys = append(testKeys, key1, key2) + addr1 := crypto.PubkeyToAddress(key1.PublicKey) + addr2 := crypto.PubkeyToAddress(key2.PublicKey) + testEthAddrs = append(testEthAddrs, addr1, addr2) + + minBlockTime = time.Millisecond + maxBlockTime = time.Millisecond + firstTxAmount = new(big.Int).Mul(big.NewInt(testMinGasPrice), big.NewInt(21000*100)) + genesisBalance = new(big.Int).Mul(big.NewInt(testMinGasPrice), big.NewInt(21000*1000)) +} + +// BuildGenesisTest returns the genesis bytes for Subnet EVM VM to be used in testing +func BuildGenesisTestWithAlloc(t *testing.T, genesisJSON string) []byte { + ss := CreateStaticService() + + genesis := &core.Genesis{} + if err := json.Unmarshal([]byte(genesisJSON), genesis); err != nil { + t.Fatalf("Problem unmarshaling genesis JSON: %s", err) + } + // add test allocs + genesis.Alloc = core.GenesisAlloc{ + testEthAddrs[0]: core.GenesisAccount{Balance: genesisBalance}, + testEthAddrs[1]: core.GenesisAccount{Balance: genesisBalance}, + } + args := &BuildGenesisArgs{GenesisData: genesis} + reply := &BuildGenesisReply{} + err := ss.BuildGenesis(nil, args, reply) + if err != nil { + t.Fatalf("Failed to create test genesis") + } + genesisBytes, err := formatting.Decode(reply.Encoding, reply.GenesisBytes) + if err != nil { + t.Fatalf("Failed to decode genesis bytes: %s", err) + } + return genesisBytes +} + +func NewContext() *snow.Context { + ctx := snow.DefaultContextTest() + ctx.NetworkID = testNetworkID + ctx.ChainID = testCChainID + ctx.AVAXAssetID = testAvaxAssetID + ctx.XChainID = testXChainID + aliaser := ctx.BCLookup.(ids.Aliaser) + _ = aliaser.Alias(testCChainID, "C") + _ = aliaser.Alias(testCChainID, testCChainID.String()) + _ = aliaser.Alias(testXChainID, "X") + _ = aliaser.Alias(testXChainID, testXChainID.String()) + ctx.SNLookup = &snLookup{ + chainsToSubnet: map[ids.ID]ids.ID{ + constants.PlatformChainID: constants.PrimaryNetworkID, + testXChainID: constants.PrimaryNetworkID, + testCChainID: constants.PrimaryNetworkID, + }, + } + return ctx +} + +type snLookup struct { + chainsToSubnet map[ids.ID]ids.ID +} + +func (sn *snLookup) SubnetID(chainID ids.ID) (ids.ID, error) { + subnetID, ok := sn.chainsToSubnet[chainID] + if !ok { + return ids.ID{}, errors.New("unknown chain") + } + return subnetID, nil +} + +func setupGenesis(t *testing.T, + genesisJSON string, +) (*snow.Context, + manager.Manager, + []byte, + chan engCommon.Message) { + genesisBytes := BuildGenesisTestWithAlloc(t, genesisJSON) + ctx := NewContext() + + baseDBManager := manager.NewMemDB(version.NewDefaultVersion(1, 4, 5)) + + // NB: this lock is intentionally left locked when this function returns. + // The caller of this function is responsible for unlocking. + ctx.Lock.Lock() + + userKeystore := keystore.New(logging.NoLog{}, manager.NewMemDB(version.NewDefaultVersion(1, 4, 5))) + if err := userKeystore.CreateUser(username, password); err != nil { + t.Fatal(err) + } + ctx.Keystore = userKeystore.NewBlockchainKeyStore(ctx.ChainID) + + issuer := make(chan engCommon.Message, 1) + prefixedDBManager := baseDBManager.NewPrefixDBManager([]byte{1}) + return ctx, prefixedDBManager, genesisBytes, issuer +} + +// GenesisVM creates a VM instance with the genesis test bytes and returns +// the channel use to send messages to the engine, the vm, and atomic memory +func GenesisVM(t *testing.T, + finishBootstrapping bool, + genesisJSON string, + configJSON string, + upgradeJSON string, +) (chan engCommon.Message, + *VM, manager.Manager, + *engCommon.SenderTest) { + vm := &VM{} + ctx, dbManager, genesisBytes, issuer := setupGenesis(t, genesisJSON) + appSender := &engCommon.SenderTest{} + appSender.CantSendAppGossip = true + appSender.SendAppGossipF = func([]byte) error { return nil } + if err := vm.Initialize( + ctx, + dbManager, + genesisBytes, + []byte(upgradeJSON), + []byte(configJSON), + issuer, + []*engCommon.Fx{}, + appSender, + ); err != nil { + t.Fatal(err) + } + + if finishBootstrapping { + assert.NoError(t, vm.Bootstrapping()) + assert.NoError(t, vm.Bootstrapped()) + } + + return issuer, vm, dbManager, appSender +} + +func TestVMConfig(t *testing.T) { + txFeeCap := float64(11) + netApiEnabled := true + configJSON := fmt.Sprintf("{\"rpc-tx-fee-cap\": %g,\"net-api-enabled\": %t}", txFeeCap, netApiEnabled) + _, vm, _, _ := GenesisVM(t, false, genesisJSONMuirGlacier, configJSON, "") + assert.Equal(t, vm.config.RPCTxFeeCap, txFeeCap, "Tx Fee Cap should be set") + assert.Equal(t, vm.config.NetAPIEnabled, netApiEnabled, "Net API Enabled should be set") + assert.NoError(t, vm.Shutdown()) +} + +func TestVMConfigDefaults(t *testing.T) { + txFeeCap := float64(11) + netApiEnabled := true + configJSON := fmt.Sprintf("{\"rpc-tx-fee-cap\": %g,\"net-api-enabled\": %t}", txFeeCap, netApiEnabled) + _, vm, _, _ := GenesisVM(t, false, genesisJSONMuirGlacier, configJSON, "") + + var vmConfig Config + vmConfig.SetDefaults() + vmConfig.RPCTxFeeCap = txFeeCap + vmConfig.NetAPIEnabled = netApiEnabled + assert.Equal(t, vmConfig, vm.config, "VM Config should match default with overrides") + assert.NoError(t, vm.Shutdown()) +} + +func TestVMNilConfig(t *testing.T) { + _, vm, _, _ := GenesisVM(t, false, genesisJSONMuirGlacier, "", "") + + // VM Config should match defaults if no config is passed in + var vmConfig Config + vmConfig.SetDefaults() + assert.Equal(t, vmConfig, vm.config, "VM Config should match default config") + assert.NoError(t, vm.Shutdown()) +} + +func TestVMContinuosProfiler(t *testing.T) { + profilerDir := t.TempDir() + profilerFrequency := 500 * time.Millisecond + configJSON := fmt.Sprintf("{\"continuous-profiler-dir\": %q,\"continuous-profiler-frequency\": \"500ms\"}", profilerDir) + _, vm, _, _ := GenesisVM(t, false, genesisJSONMuirGlacier, configJSON, "") + assert.Equal(t, vm.config.ContinuousProfilerDir, profilerDir, "profiler dir should be set") + assert.Equal(t, vm.config.ContinuousProfilerFrequency.Duration, profilerFrequency, "profiler frequency should be set") + + // Sleep for twice the frequency of the profiler to give it time + // to generate the first profile. + time.Sleep(2 * time.Second) + assert.NoError(t, vm.Shutdown()) + + // Check that the first profile was generated + expectedFileName := filepath.Join(profilerDir, "cpu.profile.1") + _, err := os.Stat(expectedFileName) + assert.NoError(t, err, "Expected continuous profiler to generate the first CPU profile at %s", expectedFileName) +} + +func TestVMUpgrades(t *testing.T) { + genesisTests := []struct { + name string + genesis string + expectedGasPrice *big.Int + }{ + { + name: "Subnet EVM", + genesis: genesisJSONSubnetEVM, + expectedGasPrice: big.NewInt(0), + }, + } + for _, test := range genesisTests { + t.Run(test.name, func(t *testing.T) { + _, vm, _, _ := GenesisVM(t, true, test.genesis, "", "") + + if gasPrice := vm.chain.GetTxPool().GasPrice(); gasPrice.Cmp(test.expectedGasPrice) != 0 { + t.Fatalf("Expected pool gas price to be %d but found %d", test.expectedGasPrice, gasPrice) + } + defer func() { + shutdownChan := make(chan error, 1) + shutdownFunc := func() { + err := vm.Shutdown() + shutdownChan <- err + } + + go shutdownFunc() + shutdownTimeout := 50 * time.Millisecond + ticker := time.NewTicker(shutdownTimeout) + select { + case <-ticker.C: + t.Fatalf("VM shutdown took longer than timeout: %v", shutdownTimeout) + case err := <-shutdownChan: + if err != nil { + t.Fatalf("Shutdown errored: %s", err) + } + } + }() + + lastAcceptedID, err := vm.LastAccepted() + if err != nil { + t.Fatal(err) + } + + if lastAcceptedID != ids.ID(vm.genesisHash) { + t.Fatal("Expected last accepted block to match the genesis block hash") + } + + genesisBlk, err := vm.GetBlock(lastAcceptedID) + if err != nil { + t.Fatalf("Failed to get genesis block due to %s", err) + } + + if height := genesisBlk.Height(); height != 0 { + t.Fatalf("Expected height of geneiss block to be 0, found: %d", height) + } + + if _, err := vm.ParseBlock(genesisBlk.Bytes()); err != nil { + t.Fatalf("Failed to parse genesis block due to %s", err) + } + + genesisStatus := genesisBlk.Status() + if genesisStatus != choices.Accepted { + t.Fatalf("expected genesis status to be %s but was %s", choices.Accepted, genesisStatus) + } + }) + } +} + +func TestBuildEthTxBlock(t *testing.T) { + // reduce block gas cost + issuer, vm, dbManager, _ := GenesisVM(t, true, genesisJSONSubnetEVM, "{\"pruning-enabled\":true}", "") + + defer func() { + if err := vm.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan := make(chan core.NewTxPoolReorgEvent, 1) + vm.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan) + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + errs := vm.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer + + blk1, err := vm.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := blk1.Verify(); err != nil { + t.Fatal(err) + } + + if status := blk1.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm.SetPreference(blk1.ID()); err != nil { + t.Fatal(err) + } + + if err := blk1.Accept(); err != nil { + t.Fatal(err) + } + + newHead := <-newTxPoolHeadChan + if newHead.Head.Hash() != common.Hash(blk1.ID()) { + t.Fatalf("Expected new block to match") + } + + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + errs = vm.chain.AddRemoteTxsSync(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + time.Sleep(2 * time.Second) + + <-issuer + + blk2, err := vm.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := blk2.Verify(); err != nil { + t.Fatal(err) + } + + if status := blk2.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := blk2.Accept(); err != nil { + t.Fatal(err) + } + + newHead = <-newTxPoolHeadChan + if newHead.Head.Hash() != common.Hash(blk2.ID()) { + t.Fatalf("Expected new block to match") + } + + if status := blk2.Status(); status != choices.Accepted { + t.Fatalf("Expected status of accepted block to be %s, but found %s", choices.Accepted, status) + } + + lastAcceptedID, err := vm.LastAccepted() + if err != nil { + t.Fatal(err) + } + if lastAcceptedID != blk2.ID() { + t.Fatalf("Expected last accepted blockID to be the accepted block: %s, but found %s", blk2.ID(), lastAcceptedID) + } + + ethBlk1 := blk1.(*chain.BlockWrapper).Block.(*Block).ethBlock + if ethBlk1Root := ethBlk1.Root(); !vm.chain.BlockChain().HasState(ethBlk1Root) { + t.Fatalf("Expected blk1 state root to not yet be pruned after blk2 was accepted because of tip buffer") + } + + // Clear the cache and ensure that GetBlock returns internal blocks with the correct status + vm.State.Flush() + blk2Refreshed, err := vm.GetBlockInternal(blk2.ID()) + if err != nil { + t.Fatal(err) + } + if status := blk2Refreshed.Status(); status != choices.Accepted { + t.Fatalf("Expected refreshed blk2 to be Accepted, but found status: %s", status) + } + + blk1RefreshedID := blk2Refreshed.Parent() + blk1Refreshed, err := vm.GetBlockInternal(blk1RefreshedID) + if err != nil { + t.Fatal(err) + } + if status := blk1Refreshed.Status(); status != choices.Accepted { + t.Fatalf("Expected refreshed blk1 to be Accepted, but found status: %s", status) + } + + if blk1Refreshed.ID() != blk1.ID() { + t.Fatalf("Found unexpected blkID for parent of blk2") + } + + restartedVM := &VM{} + genesisBytes := BuildGenesisTestWithAlloc(t, genesisJSONSubnetEVM) + + if err := restartedVM.Initialize( + NewContext(), + dbManager, + genesisBytes, + []byte(""), + []byte("{\"pruning-enabled\":true}"), + issuer, + []*engCommon.Fx{}, + nil, + ); err != nil { + t.Fatal(err) + } + + // State root should not have been committed and discarded on restart + if ethBlk1Root := ethBlk1.Root(); restartedVM.chain.BlockChain().HasState(ethBlk1Root) { + t.Fatalf("Expected blk1 state root to be pruned after blk2 was accepted on top of it in pruning mode") + } + + // State root should be committed when accepted tip on shutdown + ethBlk2 := blk2.(*chain.BlockWrapper).Block.(*Block).ethBlock + if ethBlk2Root := ethBlk2.Root(); !restartedVM.chain.BlockChain().HasState(ethBlk2Root) { + t.Fatalf("Expected blk2 state root to not be pruned after shutdown (last accepted tip should be committed)") + } +} + +// Regression test to ensure that after accepting block A +// then calling SetPreference on block B (when it becomes preferred) +// and the head of a longer chain (block D) does not corrupt the +// canonical chain. +// A +// / \ +// B C +// | +// D +func TestSetPreferenceRace(t *testing.T) { + // Create two VMs which will agree on block A and then + // build the two distinct preferred chains above + issuer1, vm1, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "{\"pruning-enabled\":true}", "") + issuer2, vm2, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "{\"pruning-enabled\":true}", "") + + defer func() { + if err := vm1.Shutdown(); err != nil { + t.Fatal(err) + } + + if err := vm2.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan1 := make(chan core.NewTxPoolReorgEvent, 1) + vm1.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan1) + newTxPoolHeadChan2 := make(chan core.NewTxPoolReorgEvent, 1) + vm2.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan2) + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm1.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkA, err := vm1.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + if err := vm1BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + if status := vm1BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkA.ID()); err != nil { + t.Fatal(err) + } + + vm2BlkA, err := vm2.ParseBlock(vm1BlkA.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + if err := vm2BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM2: %s", err) + } + if status := vm2BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of block on VM2 to be %s, but found %s", choices.Processing, status) + } + if err := vm2.SetPreference(vm2BlkA.ID()); err != nil { + t.Fatal(err) + } + + if err := vm1BlkA.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + if err := vm2BlkA.Accept(); err != nil { + t.Fatalf("VM2 failed to accept block: %s", err) + } + + newHead := <-newTxPoolHeadChan1 + if newHead.Head.Hash() != common.Hash(vm1BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + + // Create list of 10 successive transactions to build block A on vm1 + // and to be split into two separate blocks on VM2 + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + + var errs []error + + // Add the remote transactions, build the block, and set VM1's preference for block A + errs = vm1.chain.AddRemoteTxsSync(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM1 at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkB, err := vm1.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := vm1BlkB.Verify(); err != nil { + t.Fatal(err) + } + + if status := vm1BlkB.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkB.ID()); err != nil { + t.Fatal(err) + } + + // Split the transactions over two blocks, and set VM2's preference to them in sequence + // after building each block + // Block C + errs = vm2.chain.AddRemoteTxsSync(txs[0:5]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkC, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkC on VM2: %s", err) + } + + if err := vm2BlkC.Verify(); err != nil { + t.Fatalf("BlkC failed verification on VM2: %s", err) + } + + if status := vm2BlkC.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block C to be %s, but found %s", choices.Processing, status) + } + + if err := vm2.SetPreference(vm2BlkC.ID()); err != nil { + t.Fatal(err) + } + + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkC.ID()) { + t.Fatalf("Expected new block to match") + } + + // Block D + errs = vm2.chain.AddRemoteTxsSync(txs[5:10]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkD, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkD on VM2: %s", err) + } + + if err := vm2BlkD.Verify(); err != nil { + t.Fatalf("BlkD failed verification on VM2: %s", err) + } + + if status := vm2BlkD.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block D to be %s, but found %s", choices.Processing, status) + } + + if err := vm2.SetPreference(vm2BlkD.ID()); err != nil { + t.Fatal(err) + } + + // VM1 receives blkC and blkD from VM1 + // and happens to call SetPreference on blkD without ever calling SetPreference + // on blkC + // Here we parse them in reverse order to simulate receiving a chain from the tip + // back to the last accepted block as would typically be the case in the consensus + // engine + vm1BlkD, err := vm1.ParseBlock(vm2BlkD.Bytes()) + if err != nil { + t.Fatalf("VM1 errored parsing blkD: %s", err) + } + vm1BlkC, err := vm1.ParseBlock(vm2BlkC.Bytes()) + if err != nil { + t.Fatalf("VM1 errored parsing blkC: %s", err) + } + + // The blocks must be verified in order. This invariant is maintained + // in the consensus engine. + if err := vm1BlkC.Verify(); err != nil { + t.Fatalf("VM1 BlkC failed verification: %s", err) + } + if err := vm1BlkD.Verify(); err != nil { + t.Fatalf("VM1 BlkD failed verification: %s", err) + } + + // Set VM1's preference to blockD, skipping blockC + if err := vm1.SetPreference(vm1BlkD.ID()); err != nil { + t.Fatal(err) + } + + // Accept the longer chain on both VMs and ensure there are no errors + // VM1 Accepts the blocks in order + if err := vm1BlkC.Accept(); err != nil { + t.Fatalf("VM1 BlkC failed on accept: %s", err) + } + if err := vm1BlkD.Accept(); err != nil { + t.Fatalf("VM1 BlkC failed on accept: %s", err) + } + + // VM2 Accepts the blocks in order + if err := vm2BlkC.Accept(); err != nil { + t.Fatalf("VM2 BlkC failed on accept: %s", err) + } + if err := vm2BlkD.Accept(); err != nil { + t.Fatalf("VM2 BlkC failed on accept: %s", err) + } + + log.Info("Validating canonical chain") + // Verify the Canonical Chain for Both VMs + if err := vm2.chain.ValidateCanonicalChain(); err != nil { + t.Fatalf("VM2 failed canonical chain verification due to: %s", err) + } + + if err := vm1.chain.ValidateCanonicalChain(); err != nil { + t.Fatalf("VM1 failed canonical chain verification due to: %s", err) + } +} + +// Regression test to ensure that a VM that accepts block A and B +// will not attempt to orphan either when verifying blocks C and D +// from another VM (which have a common ancestor under the finalized +// frontier). +// A +// / \ +// B C +// +// verifies block B and C, then Accepts block B. Then we test to ensure +// that the VM defends against any attempt to set the preference or to +// accept block C, which should be an orphaned block at this point and +// get rejected. +func TestReorgProtection(t *testing.T) { + issuer1, vm1, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "{\"pruning-enabled\":false}", "") + issuer2, vm2, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "{\"pruning-enabled\":false}", "") + + defer func() { + if err := vm1.Shutdown(); err != nil { + t.Fatal(err) + } + + if err := vm2.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan1 := make(chan core.NewTxPoolReorgEvent, 1) + vm1.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan1) + newTxPoolHeadChan2 := make(chan core.NewTxPoolReorgEvent, 1) + vm2.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan2) + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm1.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkA, err := vm1.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + if err := vm1BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + if status := vm1BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkA.ID()); err != nil { + t.Fatal(err) + } + + vm2BlkA, err := vm2.ParseBlock(vm1BlkA.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + if err := vm2BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM2: %s", err) + } + if status := vm2BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of block on VM2 to be %s, but found %s", choices.Processing, status) + } + if err := vm2.SetPreference(vm2BlkA.ID()); err != nil { + t.Fatal(err) + } + + if err := vm1BlkA.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + if err := vm2BlkA.Accept(); err != nil { + t.Fatalf("VM2 failed to accept block: %s", err) + } + + newHead := <-newTxPoolHeadChan1 + if newHead.Head.Hash() != common.Hash(vm1BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + + // Create list of 10 successive transactions to build block A on vm1 + // and to be split into two separate blocks on VM2 + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + + var errs []error + + // Add the remote transactions, build the block, and set VM1's preference for block A + errs = vm1.chain.AddRemoteTxsSync(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM1 at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkB, err := vm1.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := vm1BlkB.Verify(); err != nil { + t.Fatal(err) + } + + if status := vm1BlkB.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkB.ID()); err != nil { + t.Fatal(err) + } + + // Split the transactions over two blocks, and set VM2's preference to them in sequence + // after building each block + // Block C + errs = vm2.chain.AddRemoteTxsSync(txs[0:5]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkC, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkC on VM2: %s", err) + } + + if err := vm2BlkC.Verify(); err != nil { + t.Fatalf("Block failed verification on VM2: %s", err) + } + if status := vm2BlkC.Status(); status != choices.Processing { + t.Fatalf("Expected status of block on VM2 to be %s, but found %s", choices.Processing, status) + } + + vm1BlkC, err := vm1.ParseBlock(vm2BlkC.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + + if err := vm1BlkC.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + // Accept B, such that block C should get Rejected. + if err := vm1BlkB.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + + // The below (setting preference blocks that have a common ancestor + // with the preferred chain lower than the last finalized block) + // should NEVER happen. However, the VM defends against this + // just in case. + if err := vm1.SetPreference(vm1BlkC.ID()); !strings.Contains(err.Error(), "cannot orphan finalized block") { + t.Fatalf("Unexpected error when setting preference that would trigger reorg: %s", err) + } + + if err := vm1BlkC.Accept(); !strings.Contains(err.Error(), "expected accepted block to have parent") { + t.Fatalf("Unexpected error when setting block at finalized height: %s", err) + } +} + +// Regression test to ensure that a VM that accepts block C while preferring +// block B will trigger a reorg. +// A +// / \ +// B C +func TestNonCanonicalAccept(t *testing.T) { + issuer1, vm1, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + issuer2, vm2, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + + defer func() { + if err := vm1.Shutdown(); err != nil { + t.Fatal(err) + } + + if err := vm2.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan1 := make(chan core.NewTxPoolReorgEvent, 1) + vm1.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan1) + newTxPoolHeadChan2 := make(chan core.NewTxPoolReorgEvent, 1) + vm2.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan2) + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm1.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkA, err := vm1.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + if err := vm1BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + if status := vm1BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkA.ID()); err != nil { + t.Fatal(err) + } + + vm2BlkA, err := vm2.ParseBlock(vm1BlkA.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + if err := vm2BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM2: %s", err) + } + if status := vm2BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of block on VM2 to be %s, but found %s", choices.Processing, status) + } + if err := vm2.SetPreference(vm2BlkA.ID()); err != nil { + t.Fatal(err) + } + + if err := vm1BlkA.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + if err := vm2BlkA.Accept(); err != nil { + t.Fatalf("VM2 failed to accept block: %s", err) + } + + newHead := <-newTxPoolHeadChan1 + if newHead.Head.Hash() != common.Hash(vm1BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + + // Create list of 10 successive transactions to build block A on vm1 + // and to be split into two separate blocks on VM2 + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + + var errs []error + + // Add the remote transactions, build the block, and set VM1's preference for block A + errs = vm1.chain.AddRemoteTxsSync(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM1 at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkB, err := vm1.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := vm1BlkB.Verify(); err != nil { + t.Fatal(err) + } + + if status := vm1BlkB.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkB.ID()); err != nil { + t.Fatal(err) + } + + vm1.chain.BlockChain().GetVMConfig().AllowUnfinalizedQueries = true + + blkBHeight := vm1BlkB.Height() + blkBHash := vm1BlkB.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + if b := vm1.chain.GetBlockByNumber(blkBHeight); b.Hash() != blkBHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkBHeight, blkBHash.Hex(), b.Hash().Hex()) + } + + errs = vm2.chain.AddRemoteTxsSync(txs[0:5]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkC, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkC on VM2: %s", err) + } + + vm1BlkC, err := vm1.ParseBlock(vm2BlkC.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + + if err := vm1BlkC.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + if err := vm1BlkC.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + + blkCHash := vm1BlkC.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + if b := vm1.chain.GetBlockByNumber(blkBHeight); b.Hash() != blkCHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkBHeight, blkCHash.Hex(), b.Hash().Hex()) + } +} + +// Regression test to ensure that a VM that verifies block B, C, then +// D (preferring block B) does not trigger a reorg through the re-verification +// of block C or D. +// A +// / \ +// B C +// | +// D +func TestStickyPreference(t *testing.T) { + issuer1, vm1, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + issuer2, vm2, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + + defer func() { + if err := vm1.Shutdown(); err != nil { + t.Fatal(err) + } + + if err := vm2.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan1 := make(chan core.NewTxPoolReorgEvent, 1) + vm1.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan1) + newTxPoolHeadChan2 := make(chan core.NewTxPoolReorgEvent, 1) + vm2.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan2) + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm1.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkA, err := vm1.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + if err := vm1BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + if status := vm1BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkA.ID()); err != nil { + t.Fatal(err) + } + + vm2BlkA, err := vm2.ParseBlock(vm1BlkA.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + if err := vm2BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM2: %s", err) + } + if status := vm2BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of block on VM2 to be %s, but found %s", choices.Processing, status) + } + if err := vm2.SetPreference(vm2BlkA.ID()); err != nil { + t.Fatal(err) + } + + if err := vm1BlkA.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + if err := vm2BlkA.Accept(); err != nil { + t.Fatalf("VM2 failed to accept block: %s", err) + } + + newHead := <-newTxPoolHeadChan1 + if newHead.Head.Hash() != common.Hash(vm1BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + + // Create list of 10 successive transactions to build block A on vm1 + // and to be split into two separate blocks on VM2 + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + + var errs []error + + // Add the remote transactions, build the block, and set VM1's preference for block A + errs = vm1.chain.AddRemoteTxsSync(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM1 at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkB, err := vm1.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := vm1BlkB.Verify(); err != nil { + t.Fatal(err) + } + + if status := vm1BlkB.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkB.ID()); err != nil { + t.Fatal(err) + } + + vm1.chain.BlockChain().GetVMConfig().AllowUnfinalizedQueries = true + + blkBHeight := vm1BlkB.Height() + blkBHash := vm1BlkB.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + if b := vm1.chain.GetBlockByNumber(blkBHeight); b.Hash() != blkBHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkBHeight, blkBHash.Hex(), b.Hash().Hex()) + } + + errs = vm2.chain.AddRemoteTxsSync(txs[0:5]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkC, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkC on VM2: %s", err) + } + + if err := vm2BlkC.Verify(); err != nil { + t.Fatalf("BlkC failed verification on VM2: %s", err) + } + + if status := vm2BlkC.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block C to be %s, but found %s", choices.Processing, status) + } + + if err := vm2.SetPreference(vm2BlkC.ID()); err != nil { + t.Fatal(err) + } + + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkC.ID()) { + t.Fatalf("Expected new block to match") + } + + errs = vm2.chain.AddRemoteTxsSync(txs[5:]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkD, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkD on VM2: %s", err) + } + + // Parse blocks produced in vm2 + vm1BlkC, err := vm1.ParseBlock(vm2BlkC.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + blkCHash := vm1BlkC.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + + vm1BlkD, err := vm1.ParseBlock(vm2BlkD.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + blkDHeight := vm1BlkD.Height() + blkDHash := vm1BlkD.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + + // Should be no-ops + if err := vm1BlkC.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + if err := vm1BlkD.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + if b := vm1.chain.GetBlockByNumber(blkBHeight); b.Hash() != blkBHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkBHeight, blkBHash.Hex(), b.Hash().Hex()) + } + if b := vm1.chain.GetBlockByNumber(blkDHeight); b != nil { + t.Fatalf("expected block at %d to be nil but got %s", blkDHeight, b.Hash().Hex()) + } + if b := vm1.chain.BlockChain().CurrentBlock(); b.Hash() != blkBHash { + t.Fatalf("expected current block to have hash %s but got %s", blkBHash.Hex(), b.Hash().Hex()) + } + + // Should still be no-ops on re-verify + if err := vm1BlkC.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + if err := vm1BlkD.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + if b := vm1.chain.GetBlockByNumber(blkBHeight); b.Hash() != blkBHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkBHeight, blkBHash.Hex(), b.Hash().Hex()) + } + if b := vm1.chain.GetBlockByNumber(blkDHeight); b != nil { + t.Fatalf("expected block at %d to be nil but got %s", blkDHeight, b.Hash().Hex()) + } + if b := vm1.chain.BlockChain().CurrentBlock(); b.Hash() != blkBHash { + t.Fatalf("expected current block to have hash %s but got %s", blkBHash.Hex(), b.Hash().Hex()) + } + + // Should be queryable after setting preference to side chain + if err := vm1.SetPreference(vm1BlkD.ID()); err != nil { + t.Fatal(err) + } + + if b := vm1.chain.GetBlockByNumber(blkBHeight); b.Hash() != blkCHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkBHeight, blkCHash.Hex(), b.Hash().Hex()) + } + if b := vm1.chain.GetBlockByNumber(blkDHeight); b.Hash() != blkDHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkDHeight, blkDHash.Hex(), b.Hash().Hex()) + } + if b := vm1.chain.BlockChain().CurrentBlock(); b.Hash() != blkDHash { + t.Fatalf("expected current block to have hash %s but got %s", blkDHash.Hex(), b.Hash().Hex()) + } + + // Attempt to accept out of order + if err := vm1BlkD.Accept(); !strings.Contains(err.Error(), "expected accepted block to have parent") { + t.Fatalf("unexpected error when accepting out of order block: %s", err) + } + + // Accept in order + if err := vm1BlkC.Accept(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + if err := vm1BlkD.Accept(); err != nil { + t.Fatalf("Block failed acceptance on VM1: %s", err) + } + + // Ensure queryable after accepting + if b := vm1.chain.GetBlockByNumber(blkBHeight); b.Hash() != blkCHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkBHeight, blkCHash.Hex(), b.Hash().Hex()) + } + if b := vm1.chain.GetBlockByNumber(blkDHeight); b.Hash() != blkDHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkDHeight, blkDHash.Hex(), b.Hash().Hex()) + } + if b := vm1.chain.BlockChain().CurrentBlock(); b.Hash() != blkDHash { + t.Fatalf("expected current block to have hash %s but got %s", blkDHash.Hex(), b.Hash().Hex()) + } +} + +// Regression test to ensure that a VM that prefers block B is able to parse +// block C but unable to parse block D because it names B as an uncle, which +// are not supported. +// A +// / \ +// B C +// | +// D +func TestUncleBlock(t *testing.T) { + issuer1, vm1, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + issuer2, vm2, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + + defer func() { + if err := vm1.Shutdown(); err != nil { + t.Fatal(err) + } + if err := vm2.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan1 := make(chan core.NewTxPoolReorgEvent, 1) + vm1.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan1) + newTxPoolHeadChan2 := make(chan core.NewTxPoolReorgEvent, 1) + vm2.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan2) + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm1.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkA, err := vm1.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + if err := vm1BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + if status := vm1BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkA.ID()); err != nil { + t.Fatal(err) + } + + vm2BlkA, err := vm2.ParseBlock(vm1BlkA.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + if err := vm2BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM2: %s", err) + } + if status := vm2BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of block on VM2 to be %s, but found %s", choices.Processing, status) + } + if err := vm2.SetPreference(vm2BlkA.ID()); err != nil { + t.Fatal(err) + } + + if err := vm1BlkA.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + if err := vm2BlkA.Accept(); err != nil { + t.Fatalf("VM2 failed to accept block: %s", err) + } + + newHead := <-newTxPoolHeadChan1 + if newHead.Head.Hash() != common.Hash(vm1BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + + var errs []error + + errs = vm1.chain.AddRemoteTxsSync(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM1 at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkB, err := vm1.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := vm1BlkB.Verify(); err != nil { + t.Fatal(err) + } + + if status := vm1BlkB.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkB.ID()); err != nil { + t.Fatal(err) + } + + errs = vm2.chain.AddRemoteTxsSync(txs[0:5]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkC, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkC on VM2: %s", err) + } + + if err := vm2BlkC.Verify(); err != nil { + t.Fatalf("BlkC failed verification on VM2: %s", err) + } + + if status := vm2BlkC.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block C to be %s, but found %s", choices.Processing, status) + } + + if err := vm2.SetPreference(vm2BlkC.ID()); err != nil { + t.Fatal(err) + } + + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkC.ID()) { + t.Fatalf("Expected new block to match") + } + + errs = vm2.chain.AddRemoteTxsSync(txs[5:10]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + vm2BlkD, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkD on VM2: %s", err) + } + + // Create uncle block from blkD + blkDEthBlock := vm2BlkD.(*chain.BlockWrapper).Block.(*Block).ethBlock + uncles := []*types.Header{vm1BlkB.(*chain.BlockWrapper).Block.(*Block).ethBlock.Header()} + uncleBlockHeader := types.CopyHeader(blkDEthBlock.Header()) + uncleBlockHeader.UncleHash = types.CalcUncleHash(uncles) + + uncleEthBlock := types.NewBlock( + uncleBlockHeader, + blkDEthBlock.Transactions(), + uncles, + nil, + new(trie.Trie), + ) + uncleBlock := &Block{ + vm: vm2, + ethBlock: uncleEthBlock, + id: ids.ID(uncleEthBlock.Hash()), + } + if err := uncleBlock.Verify(); !errors.Is(err, errUnclesUnsupported) { + t.Fatalf("VM2 should have failed with %q but got %q", errUnclesUnsupported, err.Error()) + } + if _, err := vm1.ParseBlock(vm2BlkC.Bytes()); err != nil { + t.Fatalf("VM1 errored parsing blkC: %s", err) + } + if _, err := vm1.ParseBlock(uncleBlock.Bytes()); !errors.Is(err, errUnclesUnsupported) { + t.Fatalf("VM1 should have failed with %q but got %q", errUnclesUnsupported, err.Error()) + } +} + +// Regression test to ensure that a VM that is not able to parse a block that +// contains no transactions. +func TestEmptyBlock(t *testing.T) { + issuer, vm, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + + defer func() { + if err := vm.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer + + blk, err := vm.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + // Create empty block from blkA + ethBlock := blk.(*chain.BlockWrapper).Block.(*Block).ethBlock + + emptyEthBlock := types.NewBlock( + types.CopyHeader(ethBlock.Header()), + nil, + nil, + nil, + new(trie.Trie), + ) + + emptyBlock := &Block{ + vm: vm, + ethBlock: emptyEthBlock, + id: ids.ID(emptyEthBlock.Hash()), + } + + if _, err := vm.ParseBlock(emptyBlock.Bytes()); !errors.Is(err, errEmptyBlock) { + t.Fatalf("VM should have failed with errEmptyBlock but got %s", err.Error()) + } + if err := emptyBlock.Verify(); !errors.Is(err, errEmptyBlock) { + t.Fatalf("block should have failed verification with errEmptyBlock but got %s", err.Error()) + } +} + +// Regression test to ensure that a VM that verifies block B, C, then +// D (preferring block B) reorgs when C and then D are accepted. +// A +// / \ +// B C +// | +// D +func TestAcceptReorg(t *testing.T) { + issuer1, vm1, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + issuer2, vm2, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + + defer func() { + if err := vm1.Shutdown(); err != nil { + t.Fatal(err) + } + + if err := vm2.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan1 := make(chan core.NewTxPoolReorgEvent, 1) + vm1.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan1) + newTxPoolHeadChan2 := make(chan core.NewTxPoolReorgEvent, 1) + vm2.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan2) + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm1.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkA, err := vm1.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + if err := vm1BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + if status := vm1BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkA.ID()); err != nil { + t.Fatal(err) + } + + vm2BlkA, err := vm2.ParseBlock(vm1BlkA.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + if err := vm2BlkA.Verify(); err != nil { + t.Fatalf("Block failed verification on VM2: %s", err) + } + if status := vm2BlkA.Status(); status != choices.Processing { + t.Fatalf("Expected status of block on VM2 to be %s, but found %s", choices.Processing, status) + } + if err := vm2.SetPreference(vm2BlkA.ID()); err != nil { + t.Fatal(err) + } + + if err := vm1BlkA.Accept(); err != nil { + t.Fatalf("VM1 failed to accept block: %s", err) + } + if err := vm2BlkA.Accept(); err != nil { + t.Fatalf("VM2 failed to accept block: %s", err) + } + + newHead := <-newTxPoolHeadChan1 + if newHead.Head.Hash() != common.Hash(vm1BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkA.ID()) { + t.Fatalf("Expected new block to match") + } + + // Create list of 10 successive transactions to build block A on vm1 + // and to be split into two separate blocks on VM2 + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm1.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + + // Add the remote transactions, build the block, and set VM1's preference + // for block B + errs := vm1.chain.AddRemoteTxsSync(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM1 at index %d: %s", i, err) + } + } + + <-issuer1 + + vm1BlkB, err := vm1.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := vm1BlkB.Verify(); err != nil { + t.Fatal(err) + } + + if status := vm1BlkB.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm1.SetPreference(vm1BlkB.ID()); err != nil { + t.Fatal(err) + } + + errs = vm2.chain.AddRemoteTxsSync(txs[0:5]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + + vm2BlkC, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkC on VM2: %s", err) + } + + if err := vm2BlkC.Verify(); err != nil { + t.Fatalf("BlkC failed verification on VM2: %s", err) + } + + if err := vm2.SetPreference(vm2BlkC.ID()); err != nil { + t.Fatal(err) + } + + newHead = <-newTxPoolHeadChan2 + if newHead.Head.Hash() != common.Hash(vm2BlkC.ID()) { + t.Fatalf("Expected new block to match") + } + + errs = vm2.chain.AddRemoteTxsSync(txs[5:]) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add transaction to VM2 at index %d: %s", i, err) + } + } + + <-issuer2 + + vm2BlkD, err := vm2.BuildBlock() + if err != nil { + t.Fatalf("Failed to build BlkD on VM2: %s", err) + } + + // Parse blocks produced in vm2 + vm1BlkC, err := vm1.ParseBlock(vm2BlkC.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + + vm1BlkD, err := vm1.ParseBlock(vm2BlkD.Bytes()) + if err != nil { + t.Fatalf("Unexpected error parsing block from vm2: %s", err) + } + + if err := vm1BlkC.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + if err := vm1BlkD.Verify(); err != nil { + t.Fatalf("Block failed verification on VM1: %s", err) + } + + blkBHash := vm1BlkB.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + if b := vm1.chain.BlockChain().CurrentBlock(); b.Hash() != blkBHash { + t.Fatalf("expected current block to have hash %s but got %s", blkBHash.Hex(), b.Hash().Hex()) + } + + if err := vm1BlkC.Accept(); err != nil { + t.Fatal(err) + } + + blkCHash := vm1BlkC.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + if b := vm1.chain.BlockChain().CurrentBlock(); b.Hash() != blkCHash { + t.Fatalf("expected current block to have hash %s but got %s", blkCHash.Hex(), b.Hash().Hex()) + } + + if err := vm1BlkB.Reject(); err != nil { + t.Fatal(err) + } + + if err := vm1BlkD.Accept(); err != nil { + t.Fatal(err) + } + + blkDHash := vm1BlkD.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + if b := vm1.chain.BlockChain().CurrentBlock(); b.Hash() != blkDHash { + t.Fatalf("expected current block to have hash %s but got %s", blkDHash.Hex(), b.Hash().Hex()) + } +} + +func TestFutureBlock(t *testing.T) { + issuer, vm, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + + defer func() { + if err := vm.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer + + blkA, err := vm.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + // Create empty block from blkA + internalBlkA := blkA.(*chain.BlockWrapper).Block.(*Block) + modifiedHeader := types.CopyHeader(internalBlkA.ethBlock.Header()) + // Set the VM's clock to the time of the produced block + vm.clock.Set(time.Unix(int64(modifiedHeader.Time), 0)) + // Set the modified time to exceed the allowed future time + modifiedTime := modifiedHeader.Time + uint64(maxFutureBlockTime.Seconds()+1) + modifiedHeader.Time = modifiedTime + modifiedBlock := types.NewBlock( + modifiedHeader, + internalBlkA.ethBlock.Transactions(), + nil, + nil, + new(trie.Trie), + ) + + futureBlock := &Block{ + vm: vm, + ethBlock: modifiedBlock, + id: ids.ID(modifiedBlock.Hash()), + } + + if err := futureBlock.Verify(); err == nil { + t.Fatal("Future block should have failed verification due to block timestamp too far in the future") + } else if !strings.Contains(err.Error(), "block timestamp is too far in the future") { + t.Fatalf("Expected error to be block timestamp too far in the future but found %s", err) + } +} + +func TestLastAcceptedBlockNumberAllow(t *testing.T) { + issuer, vm, _, _ := GenesisVM(t, true, genesisJSONMuirGlacier, "", "") + + defer func() { + if err := vm.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, firstTxAmount, 21000, big.NewInt(testMinGasPrice), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer + + blk, err := vm.BuildBlock() + if err != nil { + t.Fatalf("Failed to build block with import transaction: %s", err) + } + + if err := blk.Verify(); err != nil { + t.Fatalf("Block failed verification on VM: %s", err) + } + + if status := blk.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm.SetPreference(blk.ID()); err != nil { + t.Fatal(err) + } + + blkHeight := blk.Height() + blkHash := blk.(*chain.BlockWrapper).Block.(*Block).ethBlock.Hash() + + vm.chain.BlockChain().GetVMConfig().AllowUnfinalizedQueries = true + + ctx := context.Background() + b, err := vm.chain.APIBackend().BlockByNumber(ctx, rpc.BlockNumber(blkHeight)) + if err != nil { + t.Fatal(err) + } + if b.Hash() != blkHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkHeight, blkHash.Hex(), b.Hash().Hex()) + } + + vm.chain.BlockChain().GetVMConfig().AllowUnfinalizedQueries = false + + _, err = vm.chain.APIBackend().BlockByNumber(ctx, rpc.BlockNumber(blkHeight)) + if !errors.Is(err, eth.ErrUnfinalizedData) { + t.Fatalf("expected ErrUnfinalizedData but got %s", err.Error()) + } + + if err := blk.Accept(); err != nil { + t.Fatalf("VM failed to accept block: %s", err) + } + + if b := vm.chain.GetBlockByNumber(blkHeight); b.Hash() != blkHash { + t.Fatalf("expected block at %d to have hash %s but got %s", blkHeight, blkHash.Hex(), b.Hash().Hex()) + } +} + +func TestConfigureLogLevel(t *testing.T) { + configTests := []struct { + name string + logConfig string + genesisJSON, upgradeJSON string + expectedErr string + }{ + { + name: "Log level info", + logConfig: "{\"log-level\": \"info\"}", + genesisJSON: genesisJSONSubnetEVM, + upgradeJSON: "", + expectedErr: "", + }, + } + for _, test := range configTests { + t.Run(test.name, func(t *testing.T) { + vm := &VM{} + ctx, dbManager, genesisBytes, issuer := setupGenesis(t, test.genesisJSON) + appSender := &engCommon.SenderTest{} + appSender.CantSendAppGossip = true + appSender.SendAppGossipF = func([]byte) error { return nil } + err := vm.Initialize( + ctx, + dbManager, + genesisBytes, + []byte(""), + []byte(test.logConfig), + issuer, + []*engCommon.Fx{}, + appSender, + ) + if len(test.expectedErr) == 0 && err != nil { + t.Fatal(err) + } else if len(test.expectedErr) > 0 { + if err == nil { + t.Fatalf("initialize should have failed due to %s", test.expectedErr) + } else if !strings.Contains(err.Error(), test.expectedErr) { + t.Fatalf("Expected initialize to fail due to %s, but failed with %s", test.expectedErr, err.Error()) + } + } + + // If the VM was not initialized, do not attept to shut it down + if err == nil { + shutdownChan := make(chan error, 1) + shutdownFunc := func() { + err := vm.Shutdown() + shutdownChan <- err + } + go shutdownFunc() + + shutdownTimeout := 50 * time.Millisecond + ticker := time.NewTicker(shutdownTimeout) + select { + case <-ticker.C: + t.Fatalf("VM shutdown took longer than timeout: %v", shutdownTimeout) + case err := <-shutdownChan: + if err != nil { + t.Fatalf("Shutdown errored: %s", err) + } + } + } + }) + } +} + +// Regression test to ensure we can build blocks if we are starting with the +// Subnet EVM ruleset in genesis. +func TestBuildSubnetEVMBlock(t *testing.T) { + issuer, vm, _, _ := GenesisVM(t, true, genesisJSONSubnetEVM, "", "") + + defer func() { + if err := vm.Shutdown(); err != nil { + t.Fatal(err) + } + }() + + newTxPoolHeadChan := make(chan core.NewTxPoolReorgEvent, 1) + vm.chain.GetTxPool().SubscribeNewReorgEvent(newTxPoolHeadChan) + + key, err := accountKeystore.NewKey(rand.Reader) + if err != nil { + t.Fatal(err) + } + + tx := types.NewTransaction(uint64(0), key.Address, new(big.Int).Mul(firstTxAmount, big.NewInt(4)), 21000, big.NewInt(testMinGasPrice*3), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm.chainConfig.ChainID), testKeys[0]) + if err != nil { + t.Fatal(err) + } + + txErrors := vm.chain.AddRemoteTxsSync([]*types.Transaction{signedTx}) + for i, err := range txErrors { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer + + blk, err := vm.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := blk.Verify(); err != nil { + t.Fatal(err) + } + + if status := blk.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := vm.SetPreference(blk.ID()); err != nil { + t.Fatal(err) + } + + if err := blk.Accept(); err != nil { + t.Fatal(err) + } + + newHead := <-newTxPoolHeadChan + if newHead.Head.Hash() != common.Hash(blk.ID()) { + t.Fatalf("Expected new block to match") + } + + txs := make([]*types.Transaction, 10) + for i := 0; i < 10; i++ { + tx := types.NewTransaction(uint64(i), key.Address, big.NewInt(10), 21000, big.NewInt(testMinGasPrice*3), nil) + signedTx, err := types.SignTx(tx, types.NewEIP155Signer(vm.chainConfig.ChainID), key.PrivateKey) + if err != nil { + t.Fatal(err) + } + txs[i] = signedTx + } + errs := vm.chain.AddRemoteTxs(txs) + for i, err := range errs { + if err != nil { + t.Fatalf("Failed to add tx at index %d: %s", i, err) + } + } + + <-issuer + + blk, err = vm.BuildBlock() + if err != nil { + t.Fatal(err) + } + + if err := blk.Verify(); err != nil { + t.Fatal(err) + } + + if status := blk.Status(); status != choices.Processing { + t.Fatalf("Expected status of built block to be %s, but found %s", choices.Processing, status) + } + + if err := blk.Accept(); err != nil { + t.Fatal(err) + } + + ethBlk := blk.(*chain.BlockWrapper).Block.(*Block).ethBlock + if ethBlk.BlockGasCost() == nil || ethBlk.BlockGasCost().Cmp(big.NewInt(100)) < 0 { + t.Fatalf("expected blockGasCost to be at least 100 but got %d", ethBlk.BlockGasCost()) + } + minRequiredTip, err := dummy.MinRequiredTip(vm.chainConfig, ethBlk.Header()) + if err != nil { + t.Fatal(err) + } + if minRequiredTip == nil || minRequiredTip.Cmp(big.NewInt(0.05*params.GWei)) < 0 { + t.Fatalf("expected minRequiredTip to be at least 0.05 gwei but got %d", minRequiredTip) + } + + if status := blk.Status(); status != choices.Accepted { + t.Fatalf("Expected status of accepted block to be %s, but found %s", choices.Accepted, status) + } + + lastAcceptedID, err := vm.LastAccepted() + if err != nil { + t.Fatal(err) + } + if lastAcceptedID != blk.ID() { + t.Fatalf("Expected last accepted blockID to be the accepted block: %s, but found %s", blk.ID(), lastAcceptedID) + } + + // Confirm all txs are present + ethBlkTxs := vm.chain.GetBlockByNumber(2).Transactions() + for i, tx := range txs { + if len(ethBlkTxs) <= i { + t.Fatalf("missing transactions expected: %d but found: %d", len(txs), len(ethBlkTxs)) + } + if ethBlkTxs[i].Hash() != tx.Hash() { + t.Fatalf("expected tx at index %d to have hash: %x but has: %x", i, txs[i].Hash(), tx.Hash()) + } + } +} diff --git a/plugin/keys.go b/plugin/keys.go new file mode 100644 index 0000000000..7cdbd5aa55 --- /dev/null +++ b/plugin/keys.go @@ -0,0 +1,8 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package main + +const ( + versionKey = "version" +) diff --git a/plugin/main.go b/plugin/main.go new file mode 100644 index 0000000000..185832b5e3 --- /dev/null +++ b/plugin/main.go @@ -0,0 +1,36 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package main + +import ( + "fmt" + "os" + + "github.com/hashicorp/go-plugin" + + "github.com/ava-labs/avalanchego/vms/rpcchainvm" + + "github.com/ava-labs/subnet-evm/plugin/evm" +) + +func main() { + version, err := PrintVersion() + if err != nil { + fmt.Printf("couldn't get config: %s", err) + os.Exit(1) + } + if version { + fmt.Println(evm.Version) + os.Exit(0) + } + plugin.Serve(&plugin.ServeConfig{ + HandshakeConfig: rpcchainvm.Handshake, + Plugins: map[string]plugin.Plugin{ + "vm": rpcchainvm.New(&evm.VM{}), + }, + + // A non-nil value here enables gRPC serving for this plugin... + GRPCServer: plugin.DefaultGRPCServer, + }) +} diff --git a/plugin/params.go b/plugin/params.go new file mode 100644 index 0000000000..ab2d6bde4e --- /dev/null +++ b/plugin/params.go @@ -0,0 +1,45 @@ +// (c) 2019-2020, Ava Labs, Inc. All rights reserved. +// See the file LICENSE for licensing terms. + +package main + +import ( + "flag" + + "github.com/spf13/pflag" + "github.com/spf13/viper" +) + +func subnetEVMFlagSet() *flag.FlagSet { + fs := flag.NewFlagSet("subnet-evm", flag.ContinueOnError) + + fs.Bool(versionKey, false, "If true, print version and quit") + + return fs +} + +// getViper returns the viper environment for the plugin binary +func getViper() (*viper.Viper, error) { + v := viper.New() + + fs := subnetEVMFlagSet() + pflag.CommandLine.AddGoFlagSet(fs) + pflag.Parse() + if err := v.BindPFlags(pflag.CommandLine); err != nil { + return nil, err + } + + return v, nil +} + +func PrintVersion() (bool, error) { + v, err := getViper() + if err != nil { + return false, err + } + + if v.GetBool(versionKey) { + return true, nil + } + return false, nil +} diff --git a/rpc/client.go b/rpc/client.go new file mode 100644 index 0000000000..09889d22e1 --- /dev/null +++ b/rpc/client.go @@ -0,0 +1,678 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "encoding/json" + "errors" + "fmt" + "net/url" + "reflect" + "strconv" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/log" +) + +var ( + ErrClientQuit = errors.New("client is closed") + ErrNoResult = errors.New("no result in JSON-RPC response") + ErrSubscriptionQueueOverflow = errors.New("subscription queue overflow") + errClientReconnected = errors.New("client reconnected") + errDead = errors.New("connection lost") +) + +const ( + // Timeouts + defaultDialTimeout = 10 * time.Second // used if context has no deadline + subscribeTimeout = 5 * time.Second // overall timeout eth_subscribe, rpc_modules calls +) + +const ( + // Subscriptions are removed when the subscriber cannot keep up. + // + // This can be worked around by supplying a channel with sufficiently sized buffer, + // but this can be inconvenient and hard to explain in the docs. Another issue with + // buffered channels is that the buffer is static even though it might not be needed + // most of the time. + // + // The approach taken here is to maintain a per-subscription linked list buffer + // shrinks on demand. If the buffer reaches the size below, the subscription is + // dropped. + maxClientSubscriptionBuffer = 20000 +) + +const ( + httpScheme = "http" + wsScheme = "ws" + ipcScheme = "ipc" +) + +// BatchElem is an element in a batch request. +type BatchElem struct { + Method string + Args []interface{} + // The result is unmarshaled into this field. Result must be set to a + // non-nil pointer value of the desired type, otherwise the response will be + // discarded. + Result interface{} + // Error is set if the server returns an error for this request, or if + // unmarshaling into Result fails. It is not set for I/O errors. + Error error +} + +// Client represents a connection to an RPC server. +type Client struct { + idgen func() ID // for subscriptions + scheme string // connection type: http, ws or ipc + services *serviceRegistry + + idCounter uint32 + + // This function, if non-nil, is called when the connection is lost. + reconnectFunc reconnectFunc + + // writeConn is used for writing to the connection on the caller's goroutine. It should + // only be accessed outside of dispatch, with the write lock held. The write lock is + // taken by sending on reqInit and released by sending on reqSent. + writeConn jsonWriter + + // for dispatch + close chan struct{} + closing chan struct{} // closed when client is quitting + didClose chan struct{} // closed when client quits + reconnected chan ServerCodec // where write/reconnect sends the new connection + readOp chan readOp // read messages + readErr chan error // errors from read + reqInit chan *requestOp // register response IDs, takes write lock + reqSent chan error // signals write completion, releases write lock + reqTimeout chan *requestOp // removes response IDs when call timeout expires +} + +type reconnectFunc func(ctx context.Context) (ServerCodec, error) + +type clientContextKey struct{} + +type clientConn struct { + codec ServerCodec + handler *handler +} + +func (c *Client) newClientConn(conn ServerCodec, apiMaxDuration, refillRate, maxStored time.Duration) *clientConn { + ctx := context.WithValue(context.Background(), clientContextKey{}, c) + // Http connections have already set the scheme + if !c.isHTTP() && c.scheme != "" { + ctx = context.WithValue(ctx, "scheme", c.scheme) + } + handler := newHandler(ctx, conn, c.idgen, c.services) + + // When [apiMaxDuration] or [refillRate]/[maxStored] is 0 (as is the case for + // all client invocations of this function), it is ignored. + handler.deadlineContext = apiMaxDuration + handler.addLimiter(refillRate, maxStored) + return &clientConn{conn, handler} +} + +func (cc *clientConn) close(err error, inflightReq *requestOp) { + cc.handler.close(err, inflightReq) + cc.codec.close() +} + +type readOp struct { + msgs []*jsonrpcMessage + batch bool +} + +type requestOp struct { + ids []json.RawMessage + err error + resp chan *jsonrpcMessage // receives up to len(ids) responses + sub *ClientSubscription // only set for EthSubscribe requests +} + +func (op *requestOp) wait(ctx context.Context, c *Client) (*jsonrpcMessage, error) { + select { + case <-ctx.Done(): + // Send the timeout to dispatch so it can remove the request IDs. + if !c.isHTTP() { + select { + case c.reqTimeout <- op: + case <-c.closing: + } + } + return nil, ctx.Err() + case resp := <-op.resp: + return resp, op.err + } +} + +// Dial creates a new client for the given URL. +// +// The currently supported URL schemes are "http", "https", "ws" and "wss". If rawurl is a +// file name with no URL scheme, a local socket connection is established using UNIX +// domain sockets on supported platforms and named pipes on Windows. If you want to +// configure transport options, use DialHTTP, DialWebsocket or DialIPC instead. +// +// For websocket connections, the origin is set to the local host name. +// +// The client reconnects automatically if the connection is lost. +func Dial(rawurl string) (*Client, error) { + return DialContext(context.Background(), rawurl) +} + +// DialContext creates a new RPC client, just like Dial. +// +// The context is used to cancel or time out the initial connection establishment. It does +// not affect subsequent interactions with the client. +func DialContext(ctx context.Context, rawurl string) (*Client, error) { + u, err := url.Parse(rawurl) + if err != nil { + return nil, err + } + switch u.Scheme { + case "http", "https": + return DialHTTP(rawurl) + case "ws", "wss": + return DialWebsocket(ctx, rawurl, "") + //case "stdio": + // return DialStdIO(ctx) + //case "": + // return DialIPC(ctx, rawurl) + default: + return nil, fmt.Errorf("no known transport for URL scheme %q", u.Scheme) + } +} + +// Client retrieves the client from the context, if any. This can be used to perform +// 'reverse calls' in a handler method. +func ClientFromContext(ctx context.Context) (*Client, bool) { + client, ok := ctx.Value(clientContextKey{}).(*Client) + return client, ok +} + +func newClient(initctx context.Context, connect reconnectFunc) (*Client, error) { + conn, err := connect(initctx) + if err != nil { + return nil, err + } + c := initClient(conn, randomIDGenerator(), new(serviceRegistry), 0, 0, 0) + c.reconnectFunc = connect + return c, nil +} + +func initClient(conn ServerCodec, idgen func() ID, services *serviceRegistry, apiMaxDuration, refillRate, maxStored time.Duration) *Client { + scheme := "" + switch conn.(type) { + case *httpConn: + scheme = httpScheme + case *websocketCodec: + scheme = wsScheme + case *jsonCodec: + scheme = ipcScheme + } + c := &Client{ + idgen: idgen, + scheme: scheme, + services: services, + writeConn: conn, + close: make(chan struct{}), + closing: make(chan struct{}), + didClose: make(chan struct{}), + reconnected: make(chan ServerCodec), + readOp: make(chan readOp), + readErr: make(chan error), + reqInit: make(chan *requestOp), + reqSent: make(chan error, 1), + reqTimeout: make(chan *requestOp), + } + if !c.isHTTP() { + go c.dispatch(conn, apiMaxDuration, refillRate, maxStored) + } + return c +} + +// RegisterName creates a service for the given receiver type under the given name. When no +// methods on the given receiver match the criteria to be either a RPC method or a +// subscription an error is returned. Otherwise a new service is created and added to the +// service collection this client provides to the server. +func (c *Client) RegisterName(name string, receiver interface{}) error { + return c.services.registerName(name, receiver) +} + +func (c *Client) nextID() json.RawMessage { + id := atomic.AddUint32(&c.idCounter, 1) + return strconv.AppendUint(nil, uint64(id), 10) +} + +// SupportedModules calls the rpc_modules method, retrieving the list of +// APIs that are available on the server. +func (c *Client) SupportedModules() (map[string]string, error) { + var result map[string]string + ctx, cancel := context.WithTimeout(context.Background(), subscribeTimeout) + defer cancel() + err := c.CallContext(ctx, &result, "rpc_modules") + return result, err +} + +// Close closes the client, aborting any in-flight requests. +func (c *Client) Close() { + if c.isHTTP() { + return + } + select { + case c.close <- struct{}{}: + <-c.didClose + case <-c.didClose: + } +} + +// SetHeader adds a custom HTTP header to the client's requests. +// This method only works for clients using HTTP, it doesn't have +// any effect for clients using another transport. +func (c *Client) SetHeader(key, value string) { + if !c.isHTTP() { + return + } + conn := c.writeConn.(*httpConn) + conn.mu.Lock() + conn.headers.Set(key, value) + conn.mu.Unlock() +} + +// Call performs a JSON-RPC call with the given arguments and unmarshals into +// result if no error occurred. +// +// The result must be a pointer so that package json can unmarshal into it. You +// can also pass nil, in which case the result is ignored. +func (c *Client) Call(result interface{}, method string, args ...interface{}) error { + ctx := context.Background() + return c.CallContext(ctx, result, method, args...) +} + +// CallContext performs a JSON-RPC call with the given arguments. If the context is +// canceled before the call has successfully returned, CallContext returns immediately. +// +// The result must be a pointer so that package json can unmarshal into it. You +// can also pass nil, in which case the result is ignored. +func (c *Client) CallContext(ctx context.Context, result interface{}, method string, args ...interface{}) error { + if result != nil && reflect.TypeOf(result).Kind() != reflect.Ptr { + return fmt.Errorf("call result parameter must be pointer or nil interface: %v", result) + } + msg, err := c.newMessage(method, args...) + if err != nil { + return err + } + op := &requestOp{ids: []json.RawMessage{msg.ID}, resp: make(chan *jsonrpcMessage, 1)} + + if c.isHTTP() { + err = c.sendHTTP(ctx, op, msg) + } else { + err = c.send(ctx, op, msg) + } + if err != nil { + return err + } + + // dispatch has accepted the request and will close the channel when it quits. + switch resp, err := op.wait(ctx, c); { + case err != nil: + return err + case resp.Error != nil: + return resp.Error + case len(resp.Result) == 0: + return ErrNoResult + default: + return json.Unmarshal(resp.Result, &result) + } +} + +// BatchCall sends all given requests as a single batch and waits for the server +// to return a response for all of them. +// +// In contrast to Call, BatchCall only returns I/O errors. Any error specific to +// a request is reported through the Error field of the corresponding BatchElem. +// +// Note that batch calls may not be executed atomically on the server side. +func (c *Client) BatchCall(b []BatchElem) error { + ctx := context.Background() + return c.BatchCallContext(ctx, b) +} + +// BatchCall sends all given requests as a single batch and waits for the server +// to return a response for all of them. The wait duration is bounded by the +// context's deadline. +// +// In contrast to CallContext, BatchCallContext only returns errors that have occurred +// while sending the request. Any error specific to a request is reported through the +// Error field of the corresponding BatchElem. +// +// Note that batch calls may not be executed atomically on the server side. +func (c *Client) BatchCallContext(ctx context.Context, b []BatchElem) error { + var ( + msgs = make([]*jsonrpcMessage, len(b)) + byID = make(map[string]int, len(b)) + ) + op := &requestOp{ + ids: make([]json.RawMessage, len(b)), + resp: make(chan *jsonrpcMessage, len(b)), + } + for i, elem := range b { + msg, err := c.newMessage(elem.Method, elem.Args...) + if err != nil { + return err + } + msgs[i] = msg + op.ids[i] = msg.ID + byID[string(msg.ID)] = i + } + + var err error + if c.isHTTP() { + err = c.sendBatchHTTP(ctx, op, msgs) + } else { + err = c.send(ctx, op, msgs) + } + + // Wait for all responses to come back. + for n := 0; n < len(b) && err == nil; n++ { + var resp *jsonrpcMessage + resp, err = op.wait(ctx, c) + if err != nil { + break + } + // Find the element corresponding to this response. + // The element is guaranteed to be present because dispatch + // only sends valid IDs to our channel. + elem := &b[byID[string(resp.ID)]] + if resp.Error != nil { + elem.Error = resp.Error + continue + } + if len(resp.Result) == 0 { + elem.Error = ErrNoResult + continue + } + elem.Error = json.Unmarshal(resp.Result, elem.Result) + } + return err +} + +// Notify sends a notification, i.e. a method call that doesn't expect a response. +func (c *Client) Notify(ctx context.Context, method string, args ...interface{}) error { + op := new(requestOp) + msg, err := c.newMessage(method, args...) + if err != nil { + return err + } + msg.ID = nil + + if c.isHTTP() { + return c.sendHTTP(ctx, op, msg) + } + return c.send(ctx, op, msg) +} + +// EthSubscribe registers a subscription under the "eth" namespace. +func (c *Client) EthSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (*ClientSubscription, error) { + return c.Subscribe(ctx, "eth", channel, args...) +} + +// ShhSubscribe registers a subscription under the "shh" namespace. +// Deprecated: use Subscribe(ctx, "shh", ...). +func (c *Client) ShhSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (*ClientSubscription, error) { + return c.Subscribe(ctx, "shh", channel, args...) +} + +// Subscribe calls the "_subscribe" method with the given arguments, +// registering a subscription. Server notifications for the subscription are +// sent to the given channel. The element type of the channel must match the +// expected type of content returned by the subscription. +// +// The context argument cancels the RPC request that sets up the subscription but has no +// effect on the subscription after Subscribe has returned. +// +// Slow subscribers will be dropped eventually. Client buffers up to 20000 notifications +// before considering the subscriber dead. The subscription Err channel will receive +// ErrSubscriptionQueueOverflow. Use a sufficiently large buffer on the channel or ensure +// that the channel usually has at least one reader to prevent this issue. +func (c *Client) Subscribe(ctx context.Context, namespace string, channel interface{}, args ...interface{}) (*ClientSubscription, error) { + // Check type of channel first. + chanVal := reflect.ValueOf(channel) + if chanVal.Kind() != reflect.Chan || chanVal.Type().ChanDir()&reflect.SendDir == 0 { + panic("first argument to Subscribe must be a writable channel") + } + if chanVal.IsNil() { + panic("channel given to Subscribe must not be nil") + } + if c.isHTTP() { + return nil, ErrNotificationsUnsupported + } + + msg, err := c.newMessage(namespace+subscribeMethodSuffix, args...) + if err != nil { + return nil, err + } + op := &requestOp{ + ids: []json.RawMessage{msg.ID}, + resp: make(chan *jsonrpcMessage), + sub: newClientSubscription(c, namespace, chanVal), + } + + // Send the subscription request. + // The arrival and validity of the response is signaled on sub.quit. + if err := c.send(ctx, op, msg); err != nil { + return nil, err + } + if _, err := op.wait(ctx, c); err != nil { + return nil, err + } + return op.sub, nil +} + +func (c *Client) newMessage(method string, paramsIn ...interface{}) (*jsonrpcMessage, error) { + msg := &jsonrpcMessage{Version: vsn, ID: c.nextID(), Method: method} + if paramsIn != nil { // prevent sending "params":null + var err error + if msg.Params, err = json.Marshal(paramsIn); err != nil { + return nil, err + } + } + return msg, nil +} + +// send registers op with the dispatch loop, then sends msg on the connection. +// if sending fails, op is deregistered. +func (c *Client) send(ctx context.Context, op *requestOp, msg interface{}) error { + select { + case c.reqInit <- op: + err := c.write(ctx, msg, false) + c.reqSent <- err + return err + case <-ctx.Done(): + // This can happen if the client is overloaded or unable to keep up with + // subscription notifications. + return ctx.Err() + case <-c.closing: + return ErrClientQuit + } +} + +func (c *Client) write(ctx context.Context, msg interface{}, retry bool) error { + // The previous write failed. Try to establish a new connection. + if c.writeConn == nil { + if err := c.reconnect(ctx); err != nil { + return err + } + } + err := c.writeConn.writeJSON(ctx, msg) + if err != nil { + c.writeConn = nil + if !retry { + return c.write(ctx, msg, true) + } + } + return err +} + +func (c *Client) reconnect(ctx context.Context) error { + if c.reconnectFunc == nil { + return errDead + } + + if _, ok := ctx.Deadline(); !ok { + var cancel func() + ctx, cancel = context.WithTimeout(ctx, defaultDialTimeout) + defer cancel() + } + newconn, err := c.reconnectFunc(ctx) + if err != nil { + log.Trace("RPC client reconnect failed", "err", err) + return err + } + select { + case c.reconnected <- newconn: + c.writeConn = newconn + return nil + case <-c.didClose: + newconn.close() + return ErrClientQuit + } +} + +// dispatch is the main loop of the client. +// It sends read messages to waiting calls to Call and BatchCall +// and subscription notifications to registered subscriptions. +func (c *Client) dispatch(codec ServerCodec, apiMaxDuration, refillRate, maxStored time.Duration) { + var ( + lastOp *requestOp // tracks last send operation + reqInitLock = c.reqInit // nil while the send lock is held + conn = c.newClientConn(codec, apiMaxDuration, refillRate, maxStored) + reading = true + ) + defer func() { + close(c.closing) + if reading { + conn.close(ErrClientQuit, nil) + c.drainRead() + } + close(c.didClose) + }() + + // Spawn the initial read loop. + go c.read(codec) + + for { + select { + case <-c.close: + return + + // Read path: + case op := <-c.readOp: + if op.batch { + conn.handler.handleBatch(op.msgs) + } else { + conn.handler.handleMsg(op.msgs[0]) + } + + case err := <-c.readErr: + conn.handler.log.Debug("RPC connection read error", "err", err) + conn.close(err, lastOp) + reading = false + + // Reconnect: + case newcodec := <-c.reconnected: + log.Debug("RPC client reconnected", "reading", reading, "conn", newcodec.remoteAddr()) + if reading { + // Wait for the previous read loop to exit. This is a rare case which + // happens if this loop isn't notified in time after the connection breaks. + // In those cases the caller will notice first and reconnect. Closing the + // handler terminates all waiting requests (closing op.resp) except for + // lastOp, which will be transferred to the new handler. + conn.close(errClientReconnected, lastOp) + c.drainRead() + } + go c.read(newcodec) + reading = true + conn = c.newClientConn(newcodec, apiMaxDuration, refillRate, maxStored) + // Re-register the in-flight request on the new handler + // because that's where it will be sent. + conn.handler.addRequestOp(lastOp) + + // Send path: + case op := <-reqInitLock: + // Stop listening for further requests until the current one has been sent. + reqInitLock = nil + lastOp = op + conn.handler.addRequestOp(op) + + case err := <-c.reqSent: + if err != nil { + // Remove response handlers for the last send. When the read loop + // goes down, it will signal all other current operations. + conn.handler.removeRequestOp(lastOp) + } + // Let the next request in. + reqInitLock = c.reqInit + lastOp = nil + + case op := <-c.reqTimeout: + conn.handler.removeRequestOp(op) + } + } +} + +// drainRead drops read messages until an error occurs. +func (c *Client) drainRead() { + for { + select { + case <-c.readOp: + case <-c.readErr: + return + } + } +} + +// read decodes RPC messages from a codec, feeding them into dispatch. +func (c *Client) read(codec ServerCodec) { + for { + msgs, batch, err := codec.readBatch() + if _, ok := err.(*json.SyntaxError); ok { + codec.writeJSON(context.Background(), errorMessage(&parseError{err.Error()})) + } + if err != nil { + c.readErr <- err + return + } + c.readOp <- readOp{msgs, batch} + } +} + +func (c *Client) isHTTP() bool { + return c.scheme == httpScheme +} diff --git a/rpc/client_test.go b/rpc/client_test.go new file mode 100644 index 0000000000..75718b48b3 --- /dev/null +++ b/rpc/client_test.go @@ -0,0 +1,762 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "encoding/json" + "fmt" + "math/rand" + "net" + "net/http" + "net/http/httptest" + "reflect" + "runtime" + "strings" + "testing" + "time" + + "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/log" +) + +func TestClientRequest(t *testing.T) { + server := newTestServer() + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + var resp echoResult + if err := client.Call(&resp, "test_echo", "hello", 10, &echoArgs{"world"}); err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(resp, echoResult{"hello", 10, &echoArgs{"world"}}) { + t.Errorf("incorrect result %#v", resp) + } +} + +func TestClientResponseType(t *testing.T) { + server := newTestServer() + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + if err := client.Call(nil, "test_echo", "hello", 10, &echoArgs{"world"}); err != nil { + t.Errorf("Passing nil as result should be fine, but got an error: %v", err) + } + var resultVar echoResult + // Note: passing the var, not a ref + err := client.Call(resultVar, "test_echo", "hello", 10, &echoArgs{"world"}) + if err == nil { + t.Error("Passing a var as result should be an error") + } +} + +// This test checks that server-returned errors with code and data come out of Client.Call. +func TestClientErrorData(t *testing.T) { + server := newTestServer() + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + var resp interface{} + err := client.Call(&resp, "test_returnError") + if err == nil { + t.Fatal("expected error") + } + + // Check code. + if e, ok := err.(Error); !ok { + t.Fatalf("client did not return rpc.Error, got %#v", e) + } else if e.ErrorCode() != (testError{}.ErrorCode()) { + t.Fatalf("wrong error code %d, want %d", e.ErrorCode(), testError{}.ErrorCode()) + } + // Check data. + if e, ok := err.(DataError); !ok { + t.Fatalf("client did not return rpc.DataError, got %#v", e) + } else if e.ErrorData() != (testError{}.ErrorData()) { + t.Fatalf("wrong error data %#v, want %#v", e.ErrorData(), testError{}.ErrorData()) + } +} + +func TestClientBatchRequest(t *testing.T) { + server := newTestServer() + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + batch := []BatchElem{ + { + Method: "test_echo", + Args: []interface{}{"hello", 10, &echoArgs{"world"}}, + Result: new(echoResult), + }, + { + Method: "test_echo", + Args: []interface{}{"hello2", 11, &echoArgs{"world"}}, + Result: new(echoResult), + }, + { + Method: "no_such_method", + Args: []interface{}{1, 2, 3}, + Result: new(int), + }, + } + if err := client.BatchCall(batch); err != nil { + t.Fatal(err) + } + wantResult := []BatchElem{ + { + Method: "test_echo", + Args: []interface{}{"hello", 10, &echoArgs{"world"}}, + Result: &echoResult{"hello", 10, &echoArgs{"world"}}, + }, + { + Method: "test_echo", + Args: []interface{}{"hello2", 11, &echoArgs{"world"}}, + Result: &echoResult{"hello2", 11, &echoArgs{"world"}}, + }, + { + Method: "no_such_method", + Args: []interface{}{1, 2, 3}, + Result: new(int), + Error: &jsonError{Code: -32601, Message: "the method no_such_method does not exist/is not available"}, + }, + } + if !reflect.DeepEqual(batch, wantResult) { + t.Errorf("batch results mismatch:\ngot %swant %s", spew.Sdump(batch), spew.Sdump(wantResult)) + } +} + +func TestClientNotify(t *testing.T) { + server := newTestServer() + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + if err := client.Notify(context.Background(), "test_echo", "hello", 10, &echoArgs{"world"}); err != nil { + t.Fatal(err) + } +} + +// func TestClientCancelInproc(t *testing.T) { testClientCancel("inproc", t) } +func TestClientCancelWebsocket(t *testing.T) { testClientCancel("ws", t) } +func TestClientCancelHTTP(t *testing.T) { testClientCancel("http", t) } + +// func TestClientCancelIPC(t *testing.T) { testClientCancel("ipc", t) } + +// This test checks that requests made through CallContext can be canceled by canceling +// the context. +func testClientCancel(transport string, t *testing.T) { + // These tests take a lot of time, run them all at once. + // You probably want to run with -parallel 1 or comment out + // the call to t.Parallel if you enable the logging. + t.Parallel() + + server := newTestServer() + defer server.Stop() +} + +// func TestClientCancelIPC(t *testing.T) { testClientCancel("ipc", t) } + +// // This test checks that requests made through CallContext can be canceled by canceling +// // the context. +// func testClientCancel(transport string, t *testing.T) { +// // These tests take a lot of time, run them all at once. +// // You probably want to run with -parallel 1 or comment out +// // the call to t.Parallel if you enable the logging. +// t.Parallel() + +// server := newTestServer() +// defer server.Stop() + +// // What we want to achieve is that the context gets canceled +// // at various stages of request processing. The interesting cases +// // are: +// // - cancel during dial +// // - cancel while performing a HTTP request +// // - cancel while waiting for a response +// // +// // To trigger those, the times are chosen such that connections +// // are killed within the deadline for every other call (maxKillTimeout +// // is 2x maxCancelTimeout). +// // +// // Once a connection is dead, there is a fair chance it won't connect +// // successfully because the accept is delayed by 1s. +// maxContextCancelTimeout := 300 * time.Millisecond +// fl := &flakeyListener{ +// maxAcceptDelay: 1 * time.Second, +// maxKillTimeout: 600 * time.Millisecond, +// } + +// var client *Client +// switch transport { +// case "ws", "http": +// c, hs := httpTestClient(server, transport, fl) +// defer hs.Close() +// client = c +// case "ipc": +// c, l := ipcTestClient(server, fl) +// defer l.Close() +// client = c +// default: +// panic("unknown transport: " + transport) +// } + +// // The actual test starts here. +// var ( +// wg sync.WaitGroup +// nreqs = 10 +// ncallers = 10 +// ) +// caller := func(index int) { +// defer wg.Done() +// for i := 0; i < nreqs; i++ { +// var ( +// ctx context.Context +// cancel func() +// timeout = time.Duration(rand.Int63n(int64(maxContextCancelTimeout))) +// ) +// if index < ncallers/2 { +// // For half of the callers, create a context without deadline +// // and cancel it later. +// ctx, cancel = context.WithCancel(context.Background()) +// time.AfterFunc(timeout, cancel) +// } else { +// // For the other half, create a context with a deadline instead. This is +// // different because the context deadline is used to set the socket write +// // deadline. +// ctx, cancel = context.WithTimeout(context.Background(), timeout) +// } + +// // Now perform a call with the context. +// // The key thing here is that no call will ever complete successfully. +// err := client.CallContext(ctx, nil, "test_block") +// switch { +// case err == nil: +// _, hasDeadline := ctx.Deadline() +// t.Errorf("no error for call with %v wait time (deadline: %v)", timeout, hasDeadline) +// // default: +// // t.Logf("got expected error with %v wait time: %v", timeout, err) +// } +// cancel() +// } +// } +// wg.Add(ncallers) +// for i := 0; i < ncallers; i++ { +// go caller(i) +// } +// wg.Wait() +// } + +func TestClientSubscribeInvalidArg(t *testing.T) { + server := newTestServer() + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + check := func(shouldPanic bool, arg interface{}) { + defer func() { + err := recover() + if shouldPanic && err == nil { + t.Errorf("EthSubscribe should've panicked for %#v", arg) + } + if !shouldPanic && err != nil { + t.Errorf("EthSubscribe shouldn't have panicked for %#v", arg) + buf := make([]byte, 1024*1024) + buf = buf[:runtime.Stack(buf, false)] + t.Error(err) + t.Error(string(buf)) + } + }() + client.EthSubscribe(context.Background(), arg, "foo_bar") + } + check(true, nil) + check(true, 1) + check(true, (chan int)(nil)) + check(true, make(<-chan int)) + check(false, make(chan int)) + check(false, make(chan<- int)) +} + +func TestClientSubscribe(t *testing.T) { + server := newTestServer() + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + nc := make(chan int) + count := 10 + sub, err := client.Subscribe(context.Background(), "nftest", nc, "someSubscription", count, 0) + if err != nil { + t.Fatal("can't subscribe:", err) + } + for i := 0; i < count; i++ { + if val := <-nc; val != i { + t.Fatalf("value mismatch: got %d, want %d", val, i) + } + } + + sub.Unsubscribe() + select { + case v := <-nc: + t.Fatal("received value after unsubscribe:", v) + case err := <-sub.Err(): + if err != nil { + t.Fatalf("Err returned a non-nil error after explicit unsubscribe: %q", err) + } + case <-time.After(1 * time.Second): + t.Fatalf("subscription not closed within 1s after unsubscribe") + } +} + +// In this test, the connection drops while Subscribe is waiting for a response. +func TestClientSubscribeClose(t *testing.T) { + server := newTestServer() + service := ¬ificationTestService{ + gotHangSubscriptionReq: make(chan struct{}), + unblockHangSubscription: make(chan struct{}), + } + if err := server.RegisterName("nftest2", service); err != nil { + t.Fatal(err) + } + + defer server.Stop() + client := DialInProc(server) + defer client.Close() + + var ( + nc = make(chan int) + errc = make(chan error, 1) + sub *ClientSubscription + err error + ) + go func() { + sub, err = client.Subscribe(context.Background(), "nftest2", nc, "hangSubscription", 999) + errc <- err + }() + + <-service.gotHangSubscriptionReq + client.Close() + service.unblockHangSubscription <- struct{}{} + + select { + case err := <-errc: + if err == nil { + t.Errorf("Subscribe returned nil error after Close") + } + if sub != nil { + t.Error("Subscribe returned non-nil subscription after Close") + } + case <-time.After(1 * time.Second): + t.Fatalf("Subscribe did not return within 1s after Close") + } +} + +// This test reproduces https://github.com/ethereum/go-ethereum/issues/17837 where the +// client hangs during shutdown when Unsubscribe races with Client.Close. +func TestClientCloseUnsubscribeRace(t *testing.T) { + server := newTestServer() + defer server.Stop() + + for i := 0; i < 20; i++ { + client := DialInProc(server) + nc := make(chan int) + sub, err := client.Subscribe(context.Background(), "nftest", nc, "someSubscription", 3, 1) + if err != nil { + t.Fatal(err) + } + go client.Close() + go sub.Unsubscribe() + select { + case <-sub.Err(): + case <-time.After(5 * time.Second): + t.Fatal("subscription not closed within timeout") + } + } +} + +// unsubscribeRecorder collects the subscription IDs of *_unsubscribe calls. +type unsubscribeRecorder struct { + ServerCodec + unsubscribes map[string]bool +} + +func (r *unsubscribeRecorder) readBatch() ([]*jsonrpcMessage, bool, error) { + if r.unsubscribes == nil { + r.unsubscribes = make(map[string]bool) + } + + msgs, batch, err := r.ServerCodec.readBatch() + for _, msg := range msgs { + if msg.isUnsubscribe() { + var params []string + if err := json.Unmarshal(msg.Params, ¶ms); err != nil { + panic("unsubscribe decode error: " + err.Error()) + } + r.unsubscribes[params[0]] = true + } + } + return msgs, batch, err +} + +// This checks that Client calls the _unsubscribe method on the server when Unsubscribe is +// called on a subscription. +func TestClientSubscriptionUnsubscribeServer(t *testing.T) { + t.Parallel() + + // Create the server. + srv := NewServer(0) + srv.RegisterName("nftest", new(notificationTestService)) + p1, p2 := net.Pipe() + recorder := &unsubscribeRecorder{ServerCodec: NewCodec(p1)} + go srv.ServeCodec(recorder, OptionMethodInvocation|OptionSubscriptions, 0, 0, 0) + defer srv.Stop() + + // Create the client on the other end of the pipe. + client, _ := newClient(context.Background(), func(context.Context) (ServerCodec, error) { + return NewCodec(p2), nil + }) + defer client.Close() + + // Create the subscription. + ch := make(chan int) + sub, err := client.Subscribe(context.Background(), "nftest", ch, "someSubscription", 1, 1) + if err != nil { + t.Fatal(err) + } + + // Unsubscribe and check that unsubscribe was called. + sub.Unsubscribe() + if !recorder.unsubscribes[sub.subid] { + t.Fatal("client did not call unsubscribe method") + } + if _, open := <-sub.Err(); open { + t.Fatal("subscription error channel not closed after unsubscribe") + } +} + +// This checks that the subscribed channel can be closed after Unsubscribe. +// It is the reproducer for https://github.com/ethereum/go-ethereum/issues/22322 +func TestClientSubscriptionChannelClose(t *testing.T) { + t.Parallel() + + var ( + srv = NewServer(0) + httpsrv = httptest.NewServer(srv.WebsocketHandler(nil)) + wsURL = "ws:" + strings.TrimPrefix(httpsrv.URL, "http:") + ) + defer srv.Stop() + defer httpsrv.Close() + + srv.RegisterName("nftest", new(notificationTestService)) + client, _ := Dial(wsURL) + + for i := 0; i < 5; i++ { + ch := make(chan int, 100) + sub, err := client.Subscribe(context.Background(), "nftest", ch, "someSubscription", maxClientSubscriptionBuffer-1, 1) + if err != nil { + t.Fatal(err) + } + sub.Unsubscribe() + close(ch) + } +} + +// This test checks that Client doesn't lock up when a single subscriber +// doesn't read subscription events. +func TestClientNotificationStorm(t *testing.T) { + server := newTestServer() + defer server.Stop() + + doTest := func(count int, wantError bool) { + client := DialInProc(server) + defer client.Close() + ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute) + defer cancel() + + // Subscribe on the server. It will start sending many notifications + // very quickly. + nc := make(chan int) + sub, err := client.Subscribe(ctx, "nftest", nc, "someSubscription", count, 0) + if err != nil { + t.Fatal("can't subscribe:", err) + } + defer sub.Unsubscribe() + + // Process each notification, try to run a call in between each of them. + for i := 0; i < count; i++ { + select { + case val := <-nc: + if val != i { + t.Fatalf("(%d/%d) unexpected value %d", i, count, val) + } + case err := <-sub.Err(): + if wantError && err != ErrSubscriptionQueueOverflow { + t.Fatalf("(%d/%d) got error %q, want %q", i, count, err, ErrSubscriptionQueueOverflow) + } else if !wantError { + t.Fatalf("(%d/%d) got unexpected error %q", i, count, err) + } + return + } + var r int + err := client.CallContext(ctx, &r, "nftest_echo", i) + if err != nil { + if !wantError { + t.Fatalf("(%d/%d) call error: %v", i, count, err) + } + return + } + } + if wantError { + t.Fatalf("didn't get expected error") + } + } + + doTest(8000, false) + doTest(100000, true) +} + +func TestClientSetHeader(t *testing.T) { + var gotHeader bool + srv := newTestServer() + httpsrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + if r.Header.Get("test") == "ok" { + gotHeader = true + } + srv.ServeHTTP(w, r) + })) + defer httpsrv.Close() + defer srv.Stop() + + client, err := Dial(httpsrv.URL) + if err != nil { + t.Fatal(err) + } + defer client.Close() + + client.SetHeader("test", "ok") + if _, err := client.SupportedModules(); err != nil { + t.Fatal(err) + } + if !gotHeader { + t.Fatal("client did not set custom header") + } + + // Check that Content-Type can be replaced. + client.SetHeader("content-type", "application/x-garbage") + _, err = client.SupportedModules() + if err == nil { + t.Fatal("no error for invalid content-type header") + } else if !strings.Contains(err.Error(), "Unsupported Media Type") { + t.Fatalf("error is not related to content-type: %q", err) + } +} + +func TestClientHTTP(t *testing.T) { + server := newTestServer() + defer server.Stop() + + client, hs := httpTestClient(server, "http", nil) + defer hs.Close() + defer client.Close() + + // Launch concurrent requests. + var ( + results = make([]echoResult, 100) + errc = make(chan error, len(results)) + wantResult = echoResult{"a", 1, new(echoArgs)} + ) + defer client.Close() + for i := range results { + i := i + go func() { + errc <- client.Call(&results[i], "test_echo", wantResult.String, wantResult.Int, wantResult.Args) + }() + } + + // Wait for all of them to complete. + timeout := time.NewTimer(5 * time.Second) + defer timeout.Stop() + for i := range results { + select { + case err := <-errc: + if err != nil { + t.Fatal(err) + } + case <-timeout.C: + t.Fatalf("timeout (got %d/%d) results)", i+1, len(results)) + } + } + + // Check results. + for i := range results { + if !reflect.DeepEqual(results[i], wantResult) { + t.Errorf("result %d mismatch: got %#v, want %#v", i, results[i], wantResult) + } + } +} + +func TestClientReconnect(t *testing.T) { + startServer := func(addr string) (*Server, net.Listener) { + srv := newTestServer() + l, err := net.Listen("tcp", addr) + if err != nil { + t.Fatal("can't listen:", err) + } + go http.Serve(l, srv.WebsocketHandler([]string{"*"})) + return srv, l + } + + ctx, cancel := context.WithTimeout(context.Background(), 12*time.Second) + defer cancel() + + // Start a server and corresponding client. + s1, l1 := startServer("127.0.0.1:0") + client, err := DialContext(ctx, "ws://"+l1.Addr().String()) + if err != nil { + t.Fatal("can't dial", err) + } + + // Perform a call. This should work because the server is up. + var resp echoResult + if err := client.CallContext(ctx, &resp, "test_echo", "", 1, nil); err != nil { + t.Fatal(err) + } + + // Shut down the server and allow for some cool down time so we can listen on the same + // address again. + l1.Close() + s1.Stop() + time.Sleep(2 * time.Second) + + // Try calling again. It shouldn't work. + if err := client.CallContext(ctx, &resp, "test_echo", "", 2, nil); err == nil { + t.Error("successful call while the server is down") + t.Logf("resp: %#v", resp) + } + + // Start it up again and call again. The connection should be reestablished. + // We spawn multiple calls here to check whether this hangs somehow. + s2, l2 := startServer(l1.Addr().String()) + defer l2.Close() + defer s2.Stop() + + start := make(chan struct{}) + errors := make(chan error, 20) + for i := 0; i < cap(errors); i++ { + go func() { + <-start + var resp echoResult + errors <- client.CallContext(ctx, &resp, "test_echo", "", 3, nil) + }() + } + close(start) + errcount := 0 + for i := 0; i < cap(errors); i++ { + if err = <-errors; err != nil { + errcount++ + } + } + t.Logf("%d errors, last error: %v", errcount, err) + if errcount > 1 { + t.Errorf("expected one error after disconnect, got %d", errcount) + } +} + +func httpTestClient(srv *Server, transport string, fl *flakeyListener) (*Client, *httptest.Server) { + // Create the HTTP server. + var hs *httptest.Server + switch transport { + case "ws": + hs = httptest.NewUnstartedServer(srv.WebsocketHandler([]string{"*"})) + case "http": + hs = httptest.NewUnstartedServer(srv) + default: + panic("unknown HTTP transport: " + transport) + } + // Wrap the listener if required. + if fl != nil { + fl.Listener = hs.Listener + hs.Listener = fl + } + // Connect the client. + hs.Start() + client, err := Dial(transport + "://" + hs.Listener.Addr().String()) + if err != nil { + panic(err) + } + return client, hs +} + +// func ipcTestClient(srv *Server, fl *flakeyListener) (*Client, net.Listener) { +// // Listen on a random endpoint. +// endpoint := fmt.Sprintf("go-ethereum-test-ipc-%d-%d", os.Getpid(), rand.Int63()) +// if runtime.GOOS == "windows" { +// endpoint = `\\.\pipe\` + endpoint +// } else { +// endpoint = os.TempDir() + "/" + endpoint +// } +// l, err := ipcListen(endpoint) +// if err != nil { +// panic(err) +// } +// // Connect the listener to the server. +// if fl != nil { +// fl.Listener = l +// l = fl +// } +// go srv.ServeListener(l) +// // Connect the client. +// client, err := Dial(endpoint) +// if err != nil { +// panic(err) +// } +// return client, l +// } + +// flakeyListener kills accepted connections after a random timeout. +type flakeyListener struct { + net.Listener + maxKillTimeout time.Duration + maxAcceptDelay time.Duration +} + +func (l *flakeyListener) Accept() (net.Conn, error) { + delay := time.Duration(rand.Int63n(int64(l.maxAcceptDelay))) + time.Sleep(delay) + + c, err := l.Listener.Accept() + if err == nil { + timeout := time.Duration(rand.Int63n(int64(l.maxKillTimeout))) + time.AfterFunc(timeout, func() { + log.Debug(fmt.Sprintf("killing conn %v after %v", c.LocalAddr(), timeout)) + c.Close() + }) + } + return c, err +} diff --git a/rpc/doc.go b/rpc/doc.go new file mode 100644 index 0000000000..5df9d113aa --- /dev/null +++ b/rpc/doc.go @@ -0,0 +1,120 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +/* + +Package rpc implements bi-directional JSON-RPC 2.0 on multiple transports. + +It provides access to the exported methods of an object across a network or other I/O +connection. After creating a server or client instance, objects can be registered to make +them visible as 'services'. Exported methods that follow specific conventions can be +called remotely. It also has support for the publish/subscribe pattern. + +RPC Methods + +Methods that satisfy the following criteria are made available for remote access: + + - method must be exported + - method returns 0, 1 (response or error) or 2 (response and error) values + +An example method: + + func (s *CalcService) Add(a, b int) (int, error) + +When the returned error isn't nil the returned integer is ignored and the error is sent +back to the client. Otherwise the returned integer is sent back to the client. + +Optional arguments are supported by accepting pointer values as arguments. E.g. if we want +to do the addition in an optional finite field we can accept a mod argument as pointer +value. + + func (s *CalcService) Add(a, b int, mod *int) (int, error) + +This RPC method can be called with 2 integers and a null value as third argument. In that +case the mod argument will be nil. Or it can be called with 3 integers, in that case mod +will be pointing to the given third argument. Since the optional argument is the last +argument the RPC package will also accept 2 integers as arguments. It will pass the mod +argument as nil to the RPC method. + +The server offers the ServeCodec method which accepts a ServerCodec instance. It will read +requests from the codec, process the request and sends the response back to the client +using the codec. The server can execute requests concurrently. Responses can be sent back +to the client out of order. + +An example server which uses the JSON codec: + + type CalculatorService struct {} + + func (s *CalculatorService) Add(a, b int) int { + return a + b + } + + func (s *CalculatorService) Div(a, b int) (int, error) { + if b == 0 { + return 0, errors.New("divide by zero") + } + return a/b, nil + } + + calculator := new(CalculatorService) + server := NewServer() + server.RegisterName("calculator", calculator) + l, _ := net.ListenUnix("unix", &net.UnixAddr{Net: "unix", Name: "/tmp/calculator.sock"}) + server.ServeListener(l) + +Subscriptions + +The package also supports the publish subscribe pattern through the use of subscriptions. +A method that is considered eligible for notifications must satisfy the following +criteria: + + - method must be exported + - first method argument type must be context.Context + - method must have return types (rpc.Subscription, error) + +An example method: + + func (s *BlockChainService) NewBlocks(ctx context.Context) (rpc.Subscription, error) { + ... + } + +When the service containing the subscription method is registered to the server, for +example under the "blockchain" namespace, a subscription is created by calling the +"blockchain_subscribe" method. + +Subscriptions are deleted when the user sends an unsubscribe request or when the +connection which was used to create the subscription is closed. This can be initiated by +the client and server. The server will close the connection for any write error. + +For more information about subscriptions, see https://github.com/ethereum/go-ethereum/wiki/RPC-PUB-SUB. + +Reverse Calls + +In any method handler, an instance of rpc.Client can be accessed through the +ClientFromContext method. Using this client instance, server-to-client method calls can be +performed on the RPC connection. +*/ +package rpc diff --git a/rpc/errors.go b/rpc/errors.go new file mode 100644 index 0000000000..a43fa9bd8b --- /dev/null +++ b/rpc/errors.go @@ -0,0 +1,113 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import "fmt" + +// HTTPError is returned by client operations when the HTTP status code of the +// response is not a 2xx status. +type HTTPError struct { + StatusCode int + Status string + Body []byte +} + +func (err HTTPError) Error() string { + if len(err.Body) == 0 { + return err.Status + } + return fmt.Sprintf("%v: %s", err.Status, err.Body) +} + +// Error wraps RPC errors, which contain an error code in addition to the message. +type Error interface { + Error() string // returns the message + ErrorCode() int // returns the code +} + +// A DataError contains some data in addition to the error message. +type DataError interface { + Error() string // returns the message + ErrorData() interface{} // returns the error data +} + +// Error types defined below are the built-in JSON-RPC errors. + +var ( + _ Error = new(methodNotFoundError) + _ Error = new(subscriptionNotFoundError) + _ Error = new(parseError) + _ Error = new(invalidRequestError) + _ Error = new(invalidMessageError) + _ Error = new(invalidParamsError) +) + +const defaultErrorCode = -32000 + +type methodNotFoundError struct{ method string } + +func (e *methodNotFoundError) ErrorCode() int { return -32601 } + +func (e *methodNotFoundError) Error() string { + return fmt.Sprintf("the method %s does not exist/is not available", e.method) +} + +type subscriptionNotFoundError struct{ namespace, subscription string } + +func (e *subscriptionNotFoundError) ErrorCode() int { return -32601 } + +func (e *subscriptionNotFoundError) Error() string { + return fmt.Sprintf("no %q subscription in %s namespace", e.subscription, e.namespace) +} + +// Invalid JSON was received by the server. +type parseError struct{ message string } + +func (e *parseError) ErrorCode() int { return -32700 } + +func (e *parseError) Error() string { return e.message } + +// received message isn't a valid request +type invalidRequestError struct{ message string } + +func (e *invalidRequestError) ErrorCode() int { return -32600 } + +func (e *invalidRequestError) Error() string { return e.message } + +// received message is invalid +type invalidMessageError struct{ message string } + +func (e *invalidMessageError) ErrorCode() int { return -32700 } + +func (e *invalidMessageError) Error() string { return e.message } + +// unable to decode supplied params, or an invalid number of parameters +type invalidParamsError struct{ message string } + +func (e *invalidParamsError) ErrorCode() int { return -32602 } + +func (e *invalidParamsError) Error() string { return e.message } diff --git a/rpc/handler.go b/rpc/handler.go new file mode 100644 index 0000000000..abafa66346 --- /dev/null +++ b/rpc/handler.go @@ -0,0 +1,496 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "encoding/json" + "reflect" + "strconv" + "strings" + "sync" + "time" + + "github.com/ethereum/go-ethereum/log" + "golang.org/x/time/rate" +) + +// handler handles JSON-RPC messages. There is one handler per connection. Note that +// handler is not safe for concurrent use. Message handling never blocks indefinitely +// because RPCs are processed on background goroutines launched by handler. +// +// The entry points for incoming messages are: +// +// h.handleMsg(message) +// h.handleBatch(message) +// +// Outgoing calls use the requestOp struct. Register the request before sending it +// on the connection: +// +// op := &requestOp{ids: ...} +// h.addRequestOp(op) +// +// Now send the request, then wait for the reply to be delivered through handleMsg: +// +// if err := op.wait(...); err != nil { +// h.removeRequestOp(op) // timeout, etc. +// } +// +type handler struct { + reg *serviceRegistry + unsubscribeCb *callback + idgen func() ID // subscription ID generator + respWait map[string]*requestOp // active client requests + clientSubs map[string]*ClientSubscription // active client subscriptions + callWG sync.WaitGroup // pending call goroutines + rootCtx context.Context // canceled by close() + cancelRoot func() // cancel function for rootCtx + conn jsonWriter // where responses will be sent + log log.Logger + allowSubscribe bool + + subLock sync.Mutex + serverSubs map[ID]*Subscription + + deadlineContext time.Duration // limits execution after some time.Duration + limiter *rate.Limiter +} + +type callProc struct { + ctx context.Context + notifiers []*Notifier +} + +func newHandler(connCtx context.Context, conn jsonWriter, idgen func() ID, reg *serviceRegistry) *handler { + rootCtx, cancelRoot := context.WithCancel(connCtx) + h := &handler{ + reg: reg, + idgen: idgen, + conn: conn, + respWait: make(map[string]*requestOp), + clientSubs: make(map[string]*ClientSubscription), + rootCtx: rootCtx, + cancelRoot: cancelRoot, + allowSubscribe: true, + serverSubs: make(map[ID]*Subscription), + log: log.Root(), + } + if conn.remoteAddr() != "" { + h.log = h.log.New("conn", conn.remoteAddr()) + } + h.unsubscribeCb = newCallback(reflect.Value{}, reflect.ValueOf(h.unsubscribe)) + return h +} + +// addLimiter adds a rate limiter to the handler that will allow at most +// [refillRate] cpu to be used per second. At most [maxStored] cpu time will be +// stored for this limiter. +// If any values are provided that would make the rate limiting trivial, then no +// limiter is added. +func (h *handler) addLimiter(refillRate, maxStored time.Duration) { + if refillRate <= 0 || maxStored < h.deadlineContext || h.deadlineContext <= 0 { + return + } + h.limiter = rate.NewLimiter(rate.Limit(refillRate), int(maxStored)) +} + +// handleBatch executes all messages in a batch and returns the responses. +func (h *handler) handleBatch(msgs []*jsonrpcMessage) { + // Emit error response for empty batches: + if len(msgs) == 0 { + h.startCallProc(func(cp *callProc) { + h.conn.writeJSONSkipDeadline(cp.ctx, errorMessage(&invalidRequestError{"empty batch"}), h.deadlineContext > 0) + }) + return + } + + // Handle non-call messages first: + calls := make([]*jsonrpcMessage, 0, len(msgs)) + for _, msg := range msgs { + if handled := h.handleImmediate(msg); !handled { + calls = append(calls, msg) + } + } + if len(calls) == 0 { + return + } + // Process calls on a goroutine because they may block indefinitely: + h.startCallProc(func(cp *callProc) { + answers := make([]*jsonrpcMessage, 0, len(msgs)) + for _, msg := range calls { + if answer := h.handleCallMsg(cp, msg); answer != nil { + answers = append(answers, answer) + } + } + h.addSubscriptions(cp.notifiers) + if len(answers) > 0 { + h.conn.writeJSONSkipDeadline(cp.ctx, answers, h.deadlineContext > 0) + } + for _, n := range cp.notifiers { + n.activate() + } + }) +} + +// handleMsg handles a single message. +func (h *handler) handleMsg(msg *jsonrpcMessage) { + if ok := h.handleImmediate(msg); ok { + return + } + h.startCallProc(func(cp *callProc) { + answer := h.handleCallMsg(cp, msg) + h.addSubscriptions(cp.notifiers) + if answer != nil { + h.conn.writeJSONSkipDeadline(cp.ctx, answer, h.deadlineContext > 0) + } + for _, n := range cp.notifiers { + n.activate() + } + }) +} + +// close cancels all requests except for inflightReq and waits for +// call goroutines to shut down. +func (h *handler) close(err error, inflightReq *requestOp) { + h.cancelAllRequests(err, inflightReq) + h.callWG.Wait() + h.cancelRoot() + h.cancelServerSubscriptions(err) +} + +// addRequestOp registers a request operation. +func (h *handler) addRequestOp(op *requestOp) { + for _, id := range op.ids { + h.respWait[string(id)] = op + } +} + +// removeRequestOps stops waiting for the given request IDs. +func (h *handler) removeRequestOp(op *requestOp) { + for _, id := range op.ids { + delete(h.respWait, string(id)) + } +} + +// cancelAllRequests unblocks and removes pending requests and active subscriptions. +func (h *handler) cancelAllRequests(err error, inflightReq *requestOp) { + didClose := make(map[*requestOp]bool) + if inflightReq != nil { + didClose[inflightReq] = true + } + + for id, op := range h.respWait { + // Remove the op so that later calls will not close op.resp again. + delete(h.respWait, id) + + if !didClose[op] { + op.err = err + close(op.resp) + didClose[op] = true + } + } + for id, sub := range h.clientSubs { + delete(h.clientSubs, id) + sub.close(err) + } +} + +func (h *handler) addSubscriptions(nn []*Notifier) { + h.subLock.Lock() + defer h.subLock.Unlock() + + for _, n := range nn { + if sub := n.takeSubscription(); sub != nil { + h.serverSubs[sub.ID] = sub + } + } +} + +// cancelServerSubscriptions removes all subscriptions and closes their error channels. +func (h *handler) cancelServerSubscriptions(err error) { + h.subLock.Lock() + defer h.subLock.Unlock() + + for id, s := range h.serverSubs { + s.err <- err + close(s.err) + delete(h.serverSubs, id) + } +} + +// awaitLimit blocks until the context is marked as done or the rate limiter is +// full. +func (h *handler) awaitLimit(ctx context.Context) { + if h.limiter == nil { + return + } + + now := time.Now() + reservation := h.limiter.ReserveN(now, int(h.deadlineContext)) + delay := reservation.Delay() + reservation.CancelAt(now) + + timer := time.NewTimer(delay) + select { + case <-ctx.Done(): + case <-timer.C: + } + timer.Stop() +} + +// consumeLimit removes the time since [startTime] from the rate limiter. It is +// assumed that the rate limiter is full. +func (h *handler) consumeLimit(startTime time.Time) { + if h.limiter == nil { + return + } + + stopTime := time.Now() + processingTime := stopTime.Sub(startTime) + if processingTime > h.deadlineContext { + processingTime = h.deadlineContext + } + + h.limiter.ReserveN(stopTime, int(processingTime)) +} + +// startCallProc runs fn in a new goroutine and starts tracking it in the h.calls wait group. +func (h *handler) startCallProc(fn func(*callProc)) { + h.callWG.Add(1) + callFn := func() { + var ( + ctx context.Context + cancel context.CancelFunc + ) + if h.deadlineContext > 0 { + ctx, cancel = context.WithTimeout(h.rootCtx, h.deadlineContext) + } else { + ctx, cancel = context.WithCancel(h.rootCtx) + } + defer h.callWG.Done() + + h.awaitLimit(ctx) + startTime := time.Now() + defer cancel() + fn(&callProc{ctx: ctx}) + h.consumeLimit(startTime) + } + if h.limiter == nil { + go callFn() + } else { + callFn() + } +} + +// handleImmediate executes non-call messages. It returns false if the message is a +// call or requires a reply. +func (h *handler) handleImmediate(msg *jsonrpcMessage) bool { + start := time.Now() + switch { + case msg.isNotification(): + if strings.HasSuffix(msg.Method, notificationMethodSuffix) { + h.handleSubscriptionResult(msg) + return true + } + return false + case msg.isResponse(): + h.handleResponse(msg) + h.log.Trace("Handled RPC response", "reqid", idForLog{msg.ID}, "t", time.Since(start)) + return true + default: + return false + } +} + +// handleSubscriptionResult processes subscription notifications. +func (h *handler) handleSubscriptionResult(msg *jsonrpcMessage) { + var result subscriptionResult + if err := json.Unmarshal(msg.Params, &result); err != nil { + h.log.Debug("Dropping invalid subscription message") + return + } + if h.clientSubs[result.ID] != nil { + h.clientSubs[result.ID].deliver(result.Result) + } +} + +// handleResponse processes method call responses. +func (h *handler) handleResponse(msg *jsonrpcMessage) { + op := h.respWait[string(msg.ID)] + if op == nil { + h.log.Debug("Unsolicited RPC response", "reqid", idForLog{msg.ID}) + return + } + delete(h.respWait, string(msg.ID)) + // For normal responses, just forward the reply to Call/BatchCall. + if op.sub == nil { + op.resp <- msg + return + } + // For subscription responses, start the subscription if the server + // indicates success. EthSubscribe gets unblocked in either case through + // the op.resp channel. + defer close(op.resp) + if msg.Error != nil { + op.err = msg.Error + return + } + if op.err = json.Unmarshal(msg.Result, &op.sub.subid); op.err == nil { + go op.sub.run() + h.clientSubs[op.sub.subid] = op.sub + } +} + +// handleCallMsg executes a call message and returns the answer. +func (h *handler) handleCallMsg(ctx *callProc, msg *jsonrpcMessage) *jsonrpcMessage { + start := time.Now() + switch { + case msg.isNotification(): + h.handleCall(ctx, msg) + h.log.Debug("Served "+msg.Method, "t", time.Since(start)) + return nil + case msg.isCall(): + resp := h.handleCall(ctx, msg) + var ctx []interface{} + ctx = append(ctx, "reqid", idForLog{msg.ID}, "t", time.Since(start)) + if resp.Error != nil { + ctx = append(ctx, "err", resp.Error.Message) + if resp.Error.Data != nil { + ctx = append(ctx, "errdata", resp.Error.Data) + } + h.log.Warn("Served "+msg.Method, ctx...) + } else { + h.log.Debug("Served "+msg.Method, ctx...) + } + return resp + case msg.hasValidID(): + return msg.errorResponse(&invalidRequestError{"invalid request"}) + default: + return errorMessage(&invalidRequestError{"invalid request"}) + } +} + +// handleCall processes method calls. +func (h *handler) handleCall(cp *callProc, msg *jsonrpcMessage) *jsonrpcMessage { + if msg.isSubscribe() { + return h.handleSubscribe(cp, msg) + } + var callb *callback + if msg.isUnsubscribe() { + callb = h.unsubscribeCb + } else { + callb = h.reg.callback(msg.Method) + } + if callb == nil { + return msg.errorResponse(&methodNotFoundError{method: msg.Method}) + } + args, err := parsePositionalArguments(msg.Params, callb.argTypes) + if err != nil { + return msg.errorResponse(&invalidParamsError{err.Error()}) + } + start := time.Now() + answer := h.runMethod(cp.ctx, msg, callb, args) + + // Collect the statistics for RPC calls if metrics is enabled. + // We only care about pure rpc call. Filter out subscription. + if callb != h.unsubscribeCb { + rpcRequestGauge.Inc(1) + if answer.Error != nil { + failedReqeustGauge.Inc(1) + } else { + successfulRequestGauge.Inc(1) + } + rpcServingTimer.UpdateSince(start) + newRPCServingTimer(msg.Method, answer.Error == nil).UpdateSince(start) + } + return answer +} + +// handleSubscribe processes *_subscribe method calls. +func (h *handler) handleSubscribe(cp *callProc, msg *jsonrpcMessage) *jsonrpcMessage { + if !h.allowSubscribe { + return msg.errorResponse(ErrNotificationsUnsupported) + } + + // Subscription method name is first argument. + name, err := parseSubscriptionName(msg.Params) + if err != nil { + return msg.errorResponse(&invalidParamsError{err.Error()}) + } + namespace := msg.namespace() + callb := h.reg.subscription(namespace, name) + if callb == nil { + return msg.errorResponse(&subscriptionNotFoundError{namespace, name}) + } + + // Parse subscription name arg too, but remove it before calling the callback. + argTypes := append([]reflect.Type{stringType}, callb.argTypes...) + args, err := parsePositionalArguments(msg.Params, argTypes) + if err != nil { + return msg.errorResponse(&invalidParamsError{err.Error()}) + } + args = args[1:] + + // Install notifier in context so the subscription handler can find it. + n := &Notifier{h: h, namespace: namespace} + cp.notifiers = append(cp.notifiers, n) + ctx := context.WithValue(cp.ctx, notifierKey{}, n) + + return h.runMethod(ctx, msg, callb, args) +} + +// runMethod runs the Go callback for an RPC method. +func (h *handler) runMethod(ctx context.Context, msg *jsonrpcMessage, callb *callback, args []reflect.Value) *jsonrpcMessage { + result, err := callb.call(ctx, msg.Method, args) + if err != nil { + return msg.errorResponse(err) + } + return msg.response(result) +} + +// unsubscribe is the callback function for all *_unsubscribe calls. +func (h *handler) unsubscribe(ctx context.Context, id ID) (bool, error) { + h.subLock.Lock() + defer h.subLock.Unlock() + + s := h.serverSubs[id] + if s == nil { + return false, ErrSubscriptionNotFound + } + close(s.err) + delete(h.serverSubs, id) + return true, nil +} + +type idForLog struct{ json.RawMessage } + +func (id idForLog) String() string { + if s, err := strconv.Unquote(string(id.RawMessage)); err == nil { + return s + } + return string(id.RawMessage) +} diff --git a/rpc/http.go b/rpc/http.go new file mode 100644 index 0000000000..83cf008a7d --- /dev/null +++ b/rpc/http.go @@ -0,0 +1,298 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "bytes" + "context" + "encoding/json" + "errors" + "fmt" + "io" + "io/ioutil" + "mime" + "net/http" + "net/url" + "sync" + "time" +) + +const ( + maxRequestContentLength = 1024 * 1024 * 5 + contentType = "application/json" +) + +// https://www.jsonrpc.org/historical/json-rpc-over-http.html#id13 +var acceptedContentTypes = []string{contentType, "application/json-rpc", "application/jsonrequest"} + +type httpConn struct { + client *http.Client + url string + closeOnce sync.Once + closeCh chan interface{} + mu sync.Mutex // protects headers + headers http.Header +} + +// httpConn is treated specially by Client. +func (hc *httpConn) writeJSON(ctx context.Context, val interface{}) error { + return hc.writeJSONSkipDeadline(ctx, val, false) +} + +func (hc *httpConn) writeJSONSkipDeadline(context.Context, interface{}, bool) error { + panic("writeJSON called on httpConn") +} + +func (hc *httpConn) remoteAddr() string { + return hc.url +} + +func (hc *httpConn) readBatch() ([]*jsonrpcMessage, bool, error) { + <-hc.closeCh + return nil, false, io.EOF +} + +func (hc *httpConn) close() { + hc.closeOnce.Do(func() { close(hc.closeCh) }) +} + +func (hc *httpConn) closed() <-chan interface{} { + return hc.closeCh +} + +// HTTPTimeouts represents the configuration params for the HTTP RPC server. +type HTTPTimeouts struct { + // ReadTimeout is the maximum duration for reading the entire + // request, including the body. + // + // Because ReadTimeout does not let Handlers make per-request + // decisions on each request body's acceptable deadline or + // upload rate, most users will prefer to use + // ReadHeaderTimeout. It is valid to use them both. + ReadTimeout time.Duration + + // WriteTimeout is the maximum duration before timing out + // writes of the response. It is reset whenever a new + // request's header is read. Like ReadTimeout, it does not + // let Handlers make decisions on a per-request basis. + WriteTimeout time.Duration + + // IdleTimeout is the maximum amount of time to wait for the + // next request when keep-alives are enabled. If IdleTimeout + // is zero, the value of ReadTimeout is used. If both are + // zero, ReadHeaderTimeout is used. + IdleTimeout time.Duration +} + +// DefaultHTTPTimeouts represents the default timeout values used if further +// configuration is not provided. +var DefaultHTTPTimeouts = HTTPTimeouts{ + ReadTimeout: 30 * time.Second, + WriteTimeout: 30 * time.Second, + IdleTimeout: 120 * time.Second, +} + +// DialHTTPWithClient creates a new RPC client that connects to an RPC server over HTTP +// using the provided HTTP Client. +func DialHTTPWithClient(endpoint string, client *http.Client) (*Client, error) { + // Sanity check URL so we don't end up with a client that will fail every request. + _, err := url.Parse(endpoint) + if err != nil { + return nil, err + } + + initctx := context.Background() + headers := make(http.Header, 2) + headers.Set("accept", contentType) + headers.Set("content-type", contentType) + return newClient(initctx, func(context.Context) (ServerCodec, error) { + hc := &httpConn{ + client: client, + headers: headers, + url: endpoint, + closeCh: make(chan interface{}), + } + return hc, nil + }) +} + +// DialHTTP creates a new RPC client that connects to an RPC server over HTTP. +func DialHTTP(endpoint string) (*Client, error) { + return DialHTTPWithClient(endpoint, new(http.Client)) +} + +func (c *Client) sendHTTP(ctx context.Context, op *requestOp, msg interface{}) error { + hc := c.writeConn.(*httpConn) + respBody, err := hc.doRequest(ctx, msg) + if err != nil { + return err + } + defer respBody.Close() + + var respmsg jsonrpcMessage + if err := json.NewDecoder(respBody).Decode(&respmsg); err != nil { + return err + } + op.resp <- &respmsg + return nil +} + +func (c *Client) sendBatchHTTP(ctx context.Context, op *requestOp, msgs []*jsonrpcMessage) error { + hc := c.writeConn.(*httpConn) + respBody, err := hc.doRequest(ctx, msgs) + if err != nil { + return err + } + defer respBody.Close() + var respmsgs []jsonrpcMessage + if err := json.NewDecoder(respBody).Decode(&respmsgs); err != nil { + return err + } + for i := 0; i < len(respmsgs); i++ { + op.resp <- &respmsgs[i] + } + return nil +} + +func (hc *httpConn) doRequest(ctx context.Context, msg interface{}) (io.ReadCloser, error) { + body, err := json.Marshal(msg) + if err != nil { + return nil, err + } + req, err := http.NewRequestWithContext(ctx, "POST", hc.url, ioutil.NopCloser(bytes.NewReader(body))) + if err != nil { + return nil, err + } + req.ContentLength = int64(len(body)) + + // set headers + hc.mu.Lock() + req.Header = hc.headers.Clone() + hc.mu.Unlock() + + // do request + resp, err := hc.client.Do(req) + if err != nil { + return nil, err + } + if resp.StatusCode < 200 || resp.StatusCode >= 300 { + var buf bytes.Buffer + var body []byte + if _, err := buf.ReadFrom(resp.Body); err == nil { + body = buf.Bytes() + } + + return nil, HTTPError{ + Status: resp.Status, + StatusCode: resp.StatusCode, + Body: body, + } + } + return resp.Body, nil +} + +// httpServerConn turns a HTTP connection into a Conn. +type httpServerConn struct { + io.Reader + io.Writer + r *http.Request +} + +func newHTTPServerConn(r *http.Request, w http.ResponseWriter) ServerCodec { + body := io.LimitReader(r.Body, maxRequestContentLength) + conn := &httpServerConn{Reader: body, Writer: w, r: r} + return NewCodec(conn) +} + +// Close does nothing and always returns nil. +func (t *httpServerConn) Close() error { return nil } + +// RemoteAddr returns the peer address of the underlying connection. +func (t *httpServerConn) RemoteAddr() string { + return t.r.RemoteAddr +} + +// SetWriteDeadline does nothing and always returns nil. +func (t *httpServerConn) SetWriteDeadline(time.Time) error { return nil } + +// ServeHTTP serves JSON-RPC requests over HTTP. +func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) { + // Permit dumb empty requests for remote health-checks (AWS) + if r.Method == http.MethodGet && r.ContentLength == 0 && r.URL.RawQuery == "" { + w.WriteHeader(http.StatusOK) + return + } + if code, err := validateRequest(r); err != nil { + http.Error(w, err.Error(), code) + return + } + // All checks passed, create a codec that reads directly from the request body + // until EOF, writes the response to w, and orders the server to process a + // single request. + ctx := r.Context() + ctx = context.WithValue(ctx, "remote", r.RemoteAddr) + ctx = context.WithValue(ctx, "scheme", r.Proto) + ctx = context.WithValue(ctx, "local", r.Host) + if ua := r.Header.Get("User-Agent"); ua != "" { + ctx = context.WithValue(ctx, "User-Agent", ua) + } + if origin := r.Header.Get("Origin"); origin != "" { + ctx = context.WithValue(ctx, "Origin", origin) + } + + w.Header().Set("content-type", contentType) + codec := newHTTPServerConn(r, w) + defer codec.close() + s.serveSingleRequest(ctx, codec) +} + +// validateRequest returns a non-zero response code and error message if the +// request is invalid. +func validateRequest(r *http.Request) (int, error) { + if r.Method == http.MethodPut || r.Method == http.MethodDelete { + return http.StatusMethodNotAllowed, errors.New("method not allowed") + } + if r.ContentLength > maxRequestContentLength { + err := fmt.Errorf("content length too large (%d>%d)", r.ContentLength, maxRequestContentLength) + return http.StatusRequestEntityTooLarge, err + } + // Allow OPTIONS (regardless of content-type) + if r.Method == http.MethodOptions { + return 0, nil + } + // Check content-type + if mt, _, err := mime.ParseMediaType(r.Header.Get("content-type")); err == nil { + for _, accepted := range acceptedContentTypes { + if accepted == mt { + return 0, nil + } + } + } + // Invalid content-type + err := fmt.Errorf("invalid content type, only %s is supported", contentType) + return http.StatusUnsupportedMediaType, err +} diff --git a/rpc/inproc.go b/rpc/inproc.go new file mode 100644 index 0000000000..e008fd8804 --- /dev/null +++ b/rpc/inproc.go @@ -0,0 +1,43 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "net" +) + +// DialInProc attaches an in-process connection to the given RPC server. +func DialInProc(handler *Server) *Client { + initctx := context.Background() + c, _ := newClient(initctx, func(context.Context) (ServerCodec, error) { + p1, p2 := net.Pipe() + go handler.ServeCodec(NewCodec(p1), 0, 0, 0, 0) + return NewCodec(p2), nil + }) + return c +} diff --git a/rpc/json.go b/rpc/json.go new file mode 100644 index 0000000000..428bb4ca15 --- /dev/null +++ b/rpc/json.go @@ -0,0 +1,359 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "bytes" + "context" + "encoding/json" + "errors" + "fmt" + "io" + "reflect" + "strings" + "sync" + "time" +) + +const ( + vsn = "2.0" + serviceMethodSeparator = "_" + subscribeMethodSuffix = "_subscribe" + unsubscribeMethodSuffix = "_unsubscribe" + notificationMethodSuffix = "_subscription" + + defaultWriteTimeout = 10 * time.Second // used if context has no deadline +) + +var null = json.RawMessage("null") + +type subscriptionResult struct { + ID string `json:"subscription"` + Result json.RawMessage `json:"result,omitempty"` +} + +// A value of this type can a JSON-RPC request, notification, successful response or +// error response. Which one it is depends on the fields. +type jsonrpcMessage struct { + Version string `json:"jsonrpc,omitempty"` + ID json.RawMessage `json:"id,omitempty"` + Method string `json:"method,omitempty"` + Params json.RawMessage `json:"params,omitempty"` + Error *jsonError `json:"error,omitempty"` + Result json.RawMessage `json:"result,omitempty"` +} + +func (msg *jsonrpcMessage) isNotification() bool { + return msg.ID == nil && msg.Method != "" +} + +func (msg *jsonrpcMessage) isCall() bool { + return msg.hasValidID() && msg.Method != "" +} + +func (msg *jsonrpcMessage) isResponse() bool { + return msg.hasValidID() && msg.Method == "" && msg.Params == nil && (msg.Result != nil || msg.Error != nil) +} + +func (msg *jsonrpcMessage) hasValidID() bool { + return len(msg.ID) > 0 && msg.ID[0] != '{' && msg.ID[0] != '[' +} + +func (msg *jsonrpcMessage) isSubscribe() bool { + return strings.HasSuffix(msg.Method, subscribeMethodSuffix) +} + +func (msg *jsonrpcMessage) isUnsubscribe() bool { + return strings.HasSuffix(msg.Method, unsubscribeMethodSuffix) +} + +func (msg *jsonrpcMessage) namespace() string { + elem := strings.SplitN(msg.Method, serviceMethodSeparator, 2) + return elem[0] +} + +func (msg *jsonrpcMessage) String() string { + b, _ := json.Marshal(msg) + return string(b) +} + +func (msg *jsonrpcMessage) errorResponse(err error) *jsonrpcMessage { + resp := errorMessage(err) + resp.ID = msg.ID + return resp +} + +func (msg *jsonrpcMessage) response(result interface{}) *jsonrpcMessage { + enc, err := json.Marshal(result) + if err != nil { + // TODO: wrap with 'internal server error' + return msg.errorResponse(err) + } + return &jsonrpcMessage{Version: vsn, ID: msg.ID, Result: enc} +} + +func errorMessage(err error) *jsonrpcMessage { + msg := &jsonrpcMessage{Version: vsn, ID: null, Error: &jsonError{ + Code: defaultErrorCode, + Message: err.Error(), + }} + ec, ok := err.(Error) + if ok { + msg.Error.Code = ec.ErrorCode() + } + de, ok := err.(DataError) + if ok { + msg.Error.Data = de.ErrorData() + } + return msg +} + +type jsonError struct { + Code int `json:"code"` + Message string `json:"message"` + Data interface{} `json:"data,omitempty"` +} + +func (err *jsonError) Error() string { + if err.Message == "" { + return fmt.Sprintf("json-rpc error %d", err.Code) + } + return err.Message +} + +func (err *jsonError) ErrorCode() int { + return err.Code +} + +func (err *jsonError) ErrorData() interface{} { + return err.Data +} + +// Conn is a subset of the methods of net.Conn which are sufficient for ServerCodec. +type Conn interface { + io.ReadWriteCloser + SetWriteDeadline(time.Time) error +} + +type deadlineCloser interface { + io.Closer + SetWriteDeadline(time.Time) error +} + +// ConnRemoteAddr wraps the RemoteAddr operation, which returns a description +// of the peer address of a connection. If a Conn also implements ConnRemoteAddr, this +// description is used in log messages. +type ConnRemoteAddr interface { + RemoteAddr() string +} + +// jsonCodec reads and writes JSON-RPC messages to the underlying connection. It also has +// support for parsing arguments and serializing (result) objects. +type jsonCodec struct { + remote string + closer sync.Once // close closed channel once + closeCh chan interface{} // closed on Close + decode func(v interface{}) error // decoder to allow multiple transports + encMu sync.Mutex // guards the encoder + encode func(v interface{}) error // encoder to allow multiple transports + conn deadlineCloser +} + +// NewFuncCodec creates a codec which uses the given functions to read and write. If conn +// implements ConnRemoteAddr, log messages will use it to include the remote address of +// the connection. +func NewFuncCodec(conn deadlineCloser, encode, decode func(v interface{}) error) ServerCodec { + codec := &jsonCodec{ + closeCh: make(chan interface{}), + encode: encode, + decode: decode, + conn: conn, + } + if ra, ok := conn.(ConnRemoteAddr); ok { + codec.remote = ra.RemoteAddr() + } + return codec +} + +// NewCodec creates a codec on the given connection. If conn implements ConnRemoteAddr, log +// messages will use it to include the remote address of the connection. +func NewCodec(conn Conn) ServerCodec { + enc := json.NewEncoder(conn) + dec := json.NewDecoder(conn) + dec.UseNumber() + return NewFuncCodec(conn, enc.Encode, dec.Decode) +} + +func (c *jsonCodec) remoteAddr() string { + return c.remote +} + +func (c *jsonCodec) readBatch() (messages []*jsonrpcMessage, batch bool, err error) { + // Decode the next JSON object in the input stream. + // This verifies basic syntax, etc. + var rawmsg json.RawMessage + if err := c.decode(&rawmsg); err != nil { + return nil, false, err + } + messages, batch = parseMessage(rawmsg) + for i, msg := range messages { + if msg == nil { + // Message is JSON 'null'. Replace with zero value so it + // will be treated like any other invalid message. + messages[i] = new(jsonrpcMessage) + } + } + return messages, batch, nil +} + +func (c *jsonCodec) writeJSON(ctx context.Context, val interface{}) error { + return c.writeJSONSkipDeadline(ctx, val, false) +} + +func (c *jsonCodec) writeJSONSkipDeadline(ctx context.Context, v interface{}, skip bool) error { + c.encMu.Lock() + defer c.encMu.Unlock() + + deadline := time.Now().Add(defaultWriteTimeout) + if !skip { + deadlineCtx, ok := ctx.Deadline() + if ok { + deadline = deadlineCtx + } + } + c.conn.SetWriteDeadline(deadline) + return c.encode(v) +} + +func (c *jsonCodec) close() { + c.closer.Do(func() { + close(c.closeCh) + c.conn.Close() + }) +} + +// Closed returns a channel which will be closed when Close is called +func (c *jsonCodec) closed() <-chan interface{} { + return c.closeCh +} + +// parseMessage parses raw bytes as a (batch of) JSON-RPC message(s). There are no error +// checks in this function because the raw message has already been syntax-checked when it +// is called. Any non-JSON-RPC messages in the input return the zero value of +// jsonrpcMessage. +func parseMessage(raw json.RawMessage) ([]*jsonrpcMessage, bool) { + if !isBatch(raw) { + msgs := []*jsonrpcMessage{{}} + json.Unmarshal(raw, &msgs[0]) + return msgs, false + } + dec := json.NewDecoder(bytes.NewReader(raw)) + dec.Token() // skip '[' + var msgs []*jsonrpcMessage + for dec.More() { + msgs = append(msgs, new(jsonrpcMessage)) + dec.Decode(&msgs[len(msgs)-1]) + } + return msgs, true +} + +// isBatch returns true when the first non-whitespace characters is '[' +func isBatch(raw json.RawMessage) bool { + for _, c := range raw { + // skip insignificant whitespace (http://www.ietf.org/rfc/rfc4627.txt) + if c == 0x20 || c == 0x09 || c == 0x0a || c == 0x0d { + continue + } + return c == '[' + } + return false +} + +// parsePositionalArguments tries to parse the given args to an array of values with the +// given types. It returns the parsed values or an error when the args could not be +// parsed. Missing optional arguments are returned as reflect.Zero values. +func parsePositionalArguments(rawArgs json.RawMessage, types []reflect.Type) ([]reflect.Value, error) { + dec := json.NewDecoder(bytes.NewReader(rawArgs)) + var args []reflect.Value + tok, err := dec.Token() + switch { + case err == io.EOF || tok == nil && err == nil: + // "params" is optional and may be empty. Also allow "params":null even though it's + // not in the spec because our own client used to send it. + case err != nil: + return nil, err + case tok == json.Delim('['): + // Read argument array. + if args, err = parseArgumentArray(dec, types); err != nil { + return nil, err + } + default: + return nil, errors.New("non-array args") + } + // Set any missing args to nil. + for i := len(args); i < len(types); i++ { + if types[i].Kind() != reflect.Ptr { + return nil, fmt.Errorf("missing value for required argument %d", i) + } + args = append(args, reflect.Zero(types[i])) + } + return args, nil +} + +func parseArgumentArray(dec *json.Decoder, types []reflect.Type) ([]reflect.Value, error) { + args := make([]reflect.Value, 0, len(types)) + for i := 0; dec.More(); i++ { + if i >= len(types) { + return args, fmt.Errorf("too many arguments, want at most %d", len(types)) + } + argval := reflect.New(types[i]) + if err := dec.Decode(argval.Interface()); err != nil { + return args, fmt.Errorf("invalid argument %d: %v", i, err) + } + if argval.IsNil() && types[i].Kind() != reflect.Ptr { + return args, fmt.Errorf("missing value for required argument %d", i) + } + args = append(args, argval.Elem()) + } + // Read end of args array. + _, err := dec.Token() + return args, err +} + +// parseSubscriptionName extracts the subscription name from an encoded argument array. +func parseSubscriptionName(rawArgs json.RawMessage) (string, error) { + dec := json.NewDecoder(bytes.NewReader(rawArgs)) + if tok, _ := dec.Token(); tok != json.Delim('[') { + return "", errors.New("non-array args") + } + v, _ := dec.Token() + method, ok := v.(string) + if !ok { + return "", errors.New("expected subscription name as first argument") + } + return method, nil +} diff --git a/rpc/metrics.go b/rpc/metrics.go new file mode 100644 index 0000000000..7c7d56a812 --- /dev/null +++ b/rpc/metrics.go @@ -0,0 +1,49 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "fmt" + + "github.com/ethereum/go-ethereum/metrics" +) + +var ( + rpcRequestGauge = metrics.NewRegisteredGauge("rpc/requests", nil) + successfulRequestGauge = metrics.NewRegisteredGauge("rpc/success", nil) + failedReqeustGauge = metrics.NewRegisteredGauge("rpc/failure", nil) + rpcServingTimer = metrics.NewRegisteredTimer("rpc/duration/all", nil) +) + +func newRPCServingTimer(method string, valid bool) metrics.Timer { + flag := "success" + if !valid { + flag = "failure" + } + m := fmt.Sprintf("rpc/duration/%s/%s", method, flag) + return metrics.GetOrRegisterTimer(m, nil) +} diff --git a/rpc/server.go b/rpc/server.go new file mode 100644 index 0000000000..a000958f56 --- /dev/null +++ b/rpc/server.go @@ -0,0 +1,169 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "io" + "sync/atomic" + "time" + + mapset "github.com/deckarep/golang-set" + "github.com/ethereum/go-ethereum/log" +) + +const MetadataApi = "rpc" + +// CodecOption specifies which type of messages a codec supports. +// +// Deprecated: this option is no longer honored by Server. +type CodecOption int + +const ( + // OptionMethodInvocation is an indication that the codec supports RPC method calls + OptionMethodInvocation CodecOption = 1 << iota + + // OptionSubscriptions is an indication that the codec supports RPC notifications + OptionSubscriptions = 1 << iota // support pub sub +) + +// Server is an RPC server. +type Server struct { + services serviceRegistry + idgen func() ID + run int32 + codecs mapset.Set + maximumDuration time.Duration +} + +// NewServer creates a new server instance with no registered handlers. +// +// If [maximumDuration] > 0, the deadline of incoming requests is +// [maximumDuration] in the future. Otherwise, no deadline is assigned to +// incoming requests. +func NewServer(maximumDuration time.Duration) *Server { + server := &Server{ + idgen: randomIDGenerator(), + codecs: mapset.NewSet(), + run: 1, + maximumDuration: maximumDuration, + } + // Register the default service providing meta information about the RPC service such + // as the services and methods it offers. + rpcService := &RPCService{server} + server.RegisterName(MetadataApi, rpcService) + return server +} + +// RegisterName creates a service for the given receiver type under the given name. When no +// methods on the given receiver match the criteria to be either a RPC method or a +// subscription an error is returned. Otherwise a new service is created and added to the +// service collection this server provides to clients. +func (s *Server) RegisterName(name string, receiver interface{}) error { + return s.services.registerName(name, receiver) +} + +// ServeCodec reads incoming requests from codec, calls the appropriate callback and writes +// the response back using the given codec. It will block until the codec is closed or the +// server is stopped. In either case the codec is closed. +// +// Note that codec options are no longer supported. +func (s *Server) ServeCodec(codec ServerCodec, options CodecOption, apiMaxDuration, refillRate, maxStored time.Duration) { + defer codec.close() + + // Don't serve if server is stopped. + if atomic.LoadInt32(&s.run) == 0 { + return + } + + // Add the codec to the set so it can be closed by Stop. + s.codecs.Add(codec) + defer s.codecs.Remove(codec) + + c := initClient(codec, s.idgen, &s.services, apiMaxDuration, refillRate, maxStored) + <-codec.closed() + c.Close() +} + +// serveSingleRequest reads and processes a single RPC request from the given codec. This +// is used to serve HTTP connections. Subscriptions and reverse calls are not allowed in +// this mode. +func (s *Server) serveSingleRequest(ctx context.Context, codec ServerCodec) { + // Don't serve if server is stopped. + if atomic.LoadInt32(&s.run) == 0 { + return + } + + h := newHandler(ctx, codec, s.idgen, &s.services) + h.deadlineContext = s.maximumDuration + h.allowSubscribe = false + defer h.close(io.EOF, nil) + + reqs, batch, err := codec.readBatch() + if err != nil { + if err != io.EOF { + codec.writeJSON(ctx, errorMessage(&invalidMessageError{"parse error"})) + } + return + } + if batch { + h.handleBatch(reqs) + } else { + h.handleMsg(reqs[0]) + } +} + +// Stop stops reading new requests, waits for stopPendingRequestTimeout to allow pending +// requests to finish, then closes all codecs which will cancel pending requests and +// subscriptions. +func (s *Server) Stop() { + if atomic.CompareAndSwapInt32(&s.run, 1, 0) { + log.Debug("RPC server shutting down") + s.codecs.Each(func(c interface{}) bool { + c.(ServerCodec).close() + return true + }) + } +} + +// RPCService gives meta information about the server. +// e.g. gives information about the loaded modules. +type RPCService struct { + server *Server +} + +// Modules returns the list of RPC services with their version number +func (s *RPCService) Modules() map[string]string { + s.server.services.mu.Lock() + defer s.server.services.mu.Unlock() + + modules := make(map[string]string) + for name := range s.server.services.services { + modules[name] = "1.0" + } + return modules +} diff --git a/rpc/server_test.go b/rpc/server_test.go new file mode 100644 index 0000000000..ef1111e7ba --- /dev/null +++ b/rpc/server_test.go @@ -0,0 +1,161 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "bufio" + "io" + "io/ioutil" + "net" + "path/filepath" + "strings" + "testing" + "time" +) + +func TestServerRegisterName(t *testing.T) { + server := NewServer(0) + service := new(testService) + + if err := server.RegisterName("test", service); err != nil { + t.Fatalf("%v", err) + } + + if len(server.services.services) != 2 { + t.Fatalf("Expected 2 service entries, got %d", len(server.services.services)) + } + + svc, ok := server.services.services["test"] + if !ok { + t.Fatalf("Expected service calc to be registered") + } + + wantCallbacks := 9 + if len(svc.callbacks) != wantCallbacks { + t.Errorf("Expected %d callbacks for service 'service', got %d", wantCallbacks, len(svc.callbacks)) + } +} + +func TestServer(t *testing.T) { + files, err := ioutil.ReadDir("testdata") + if err != nil { + t.Fatal("where'd my testdata go?") + } + for _, f := range files { + if f.IsDir() || strings.HasPrefix(f.Name(), ".") { + continue + } + path := filepath.Join("testdata", f.Name()) + name := strings.TrimSuffix(f.Name(), filepath.Ext(f.Name())) + t.Run(name, func(t *testing.T) { + runTestScript(t, path) + }) + } +} + +func runTestScript(t *testing.T, file string) { + server := newTestServer() + content, err := ioutil.ReadFile(file) + if err != nil { + t.Fatal(err) + } + + clientConn, serverConn := net.Pipe() + defer clientConn.Close() + go server.ServeCodec(NewCodec(serverConn), 0, 0, 0, 0) + readbuf := bufio.NewReader(clientConn) + for _, line := range strings.Split(string(content), "\n") { + line = strings.TrimSpace(line) + switch { + case len(line) == 0 || strings.HasPrefix(line, "//"): + // skip comments, blank lines + continue + case strings.HasPrefix(line, "--> "): + t.Log(line) + // write to connection + clientConn.SetWriteDeadline(time.Now().Add(5 * time.Second)) + if _, err := io.WriteString(clientConn, line[4:]+"\n"); err != nil { + t.Fatalf("write error: %v", err) + } + case strings.HasPrefix(line, "<-- "): + t.Log(line) + want := line[4:] + // read line from connection and compare text + clientConn.SetReadDeadline(time.Now().Add(5 * time.Second)) + sent, err := readbuf.ReadString('\n') + if err != nil { + t.Fatalf("read error: %v", err) + } + sent = strings.TrimRight(sent, "\r\n") + if sent != want { + t.Errorf("wrong line from server\ngot: %s\nwant: %s", sent, want) + } + default: + panic("invalid line in test script: " + line) + } + } +} + +// // This test checks that responses are delivered for very short-lived connections that +// // only carry a single request. +// func TestServerShortLivedConn(t *testing.T) { +// server := newTestServer() +// defer server.Stop() + +// listener, err := net.Listen("tcp", "127.0.0.1:0") +// if err != nil { +// t.Fatal("can't listen:", err) +// } +// defer listener.Close() +// go server.ServeListener(listener) + +// var ( +// request = `{"jsonrpc":"2.0","id":1,"method":"rpc_modules"}` + "\n" +// wantResp = `{"jsonrpc":"2.0","id":1,"result":{"nftest":"1.0","rpc":"1.0","test":"1.0"}}` + "\n" +// deadline = time.Now().Add(10 * time.Second) +// ) +// for i := 0; i < 20; i++ { +// conn, err := net.Dial("tcp", listener.Addr().String()) +// if err != nil { +// t.Fatal("can't dial:", err) +// } +// defer conn.Close() +// conn.SetDeadline(deadline) +// // Write the request, then half-close the connection so the server stops reading. +// conn.Write([]byte(request)) +// conn.(*net.TCPConn).CloseWrite() +// // Now try to get the response. +// buf := make([]byte, 2000) +// n, err := conn.Read(buf) +// if err != nil { +// t.Fatal("read error:", err) +// } +// if !bytes.Equal(buf[:n], []byte(wantResp)) { +// t.Fatalf("wrong response: %s", buf[:n]) +// } +// } +// } diff --git a/rpc/service.go b/rpc/service.go new file mode 100644 index 0000000000..86ec93fd56 --- /dev/null +++ b/rpc/service.go @@ -0,0 +1,271 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "errors" + "fmt" + "reflect" + "runtime" + "strings" + "sync" + "unicode" + + "github.com/ethereum/go-ethereum/log" +) + +var ( + contextType = reflect.TypeOf((*context.Context)(nil)).Elem() + errorType = reflect.TypeOf((*error)(nil)).Elem() + subscriptionType = reflect.TypeOf(Subscription{}) + stringType = reflect.TypeOf("") +) + +type serviceRegistry struct { + mu sync.Mutex + services map[string]service +} + +// service represents a registered object. +type service struct { + name string // name for service + callbacks map[string]*callback // registered handlers + subscriptions map[string]*callback // available subscriptions/notifications +} + +// callback is a method callback which was registered in the server +type callback struct { + fn reflect.Value // the function + rcvr reflect.Value // receiver object of method, set if fn is method + argTypes []reflect.Type // input argument types + hasCtx bool // method's first argument is a context (not included in argTypes) + errPos int // err return idx, of -1 when method cannot return error + isSubscribe bool // true if this is a subscription callback +} + +func (r *serviceRegistry) registerName(name string, rcvr interface{}) error { + rcvrVal := reflect.ValueOf(rcvr) + if name == "" { + return fmt.Errorf("no service name for type %s", rcvrVal.Type().String()) + } + callbacks := suitableCallbacks(rcvrVal) + if len(callbacks) == 0 { + return fmt.Errorf("service %T doesn't have any suitable methods/subscriptions to expose", rcvr) + } + + r.mu.Lock() + defer r.mu.Unlock() + if r.services == nil { + r.services = make(map[string]service) + } + svc, ok := r.services[name] + if !ok { + svc = service{ + name: name, + callbacks: make(map[string]*callback), + subscriptions: make(map[string]*callback), + } + r.services[name] = svc + } + for name, cb := range callbacks { + if cb.isSubscribe { + svc.subscriptions[name] = cb + } else { + svc.callbacks[name] = cb + } + } + return nil +} + +// callback returns the callback corresponding to the given RPC method name. +func (r *serviceRegistry) callback(method string) *callback { + elem := strings.SplitN(method, serviceMethodSeparator, 2) + if len(elem) != 2 { + return nil + } + r.mu.Lock() + defer r.mu.Unlock() + return r.services[elem[0]].callbacks[elem[1]] +} + +// subscription returns a subscription callback in the given service. +func (r *serviceRegistry) subscription(service, name string) *callback { + r.mu.Lock() + defer r.mu.Unlock() + return r.services[service].subscriptions[name] +} + +// suitableCallbacks iterates over the methods of the given type. It determines if a method +// satisfies the criteria for a RPC callback or a subscription callback and adds it to the +// collection of callbacks. See server documentation for a summary of these criteria. +func suitableCallbacks(receiver reflect.Value) map[string]*callback { + typ := receiver.Type() + callbacks := make(map[string]*callback) + for m := 0; m < typ.NumMethod(); m++ { + method := typ.Method(m) + if method.PkgPath != "" { + continue // method not exported + } + cb := newCallback(receiver, method.Func) + if cb == nil { + continue // function invalid + } + name := formatName(method.Name) + callbacks[name] = cb + } + return callbacks +} + +// newCallback turns fn (a function) into a callback object. It returns nil if the function +// is unsuitable as an RPC callback. +func newCallback(receiver, fn reflect.Value) *callback { + fntype := fn.Type() + c := &callback{fn: fn, rcvr: receiver, errPos: -1, isSubscribe: isPubSub(fntype)} + // Determine parameter types. They must all be exported or builtin types. + c.makeArgTypes() + + // Verify return types. The function must return at most one error + // and/or one other non-error value. + outs := make([]reflect.Type, fntype.NumOut()) + for i := 0; i < fntype.NumOut(); i++ { + outs[i] = fntype.Out(i) + } + if len(outs) > 2 { + return nil + } + // If an error is returned, it must be the last returned value. + switch { + case len(outs) == 1 && isErrorType(outs[0]): + c.errPos = 0 + case len(outs) == 2: + if isErrorType(outs[0]) || !isErrorType(outs[1]) { + return nil + } + c.errPos = 1 + } + return c +} + +// makeArgTypes composes the argTypes list. +func (c *callback) makeArgTypes() { + fntype := c.fn.Type() + // Skip receiver and context.Context parameter (if present). + firstArg := 0 + if c.rcvr.IsValid() { + firstArg++ + } + if fntype.NumIn() > firstArg && fntype.In(firstArg) == contextType { + c.hasCtx = true + firstArg++ + } + // Add all remaining parameters. + c.argTypes = make([]reflect.Type, fntype.NumIn()-firstArg) + for i := firstArg; i < fntype.NumIn(); i++ { + c.argTypes[i-firstArg] = fntype.In(i) + } +} + +// call invokes the callback. +func (c *callback) call(ctx context.Context, method string, args []reflect.Value) (res interface{}, errRes error) { + // Create the argument slice. + fullargs := make([]reflect.Value, 0, 2+len(args)) + if c.rcvr.IsValid() { + fullargs = append(fullargs, c.rcvr) + } + if c.hasCtx { + fullargs = append(fullargs, reflect.ValueOf(ctx)) + } + fullargs = append(fullargs, args...) + + // Catch panic while running the callback. + defer func() { + if err := recover(); err != nil { + const size = 64 << 10 + buf := make([]byte, size) + buf = buf[:runtime.Stack(buf, false)] + log.Error("RPC method " + method + " crashed: " + fmt.Sprintf("%v\n%s", err, buf)) + errRes = errors.New("method handler crashed") + } + }() + // Run the callback. + results := c.fn.Call(fullargs) + if len(results) == 0 { + return nil, nil + } + if c.errPos >= 0 && !results[c.errPos].IsNil() { + // Method has returned non-nil error value. + err := results[c.errPos].Interface().(error) + return reflect.Value{}, err + } + return results[0].Interface(), nil +} + +// Is t context.Context or *context.Context? +func isContextType(t reflect.Type) bool { + for t.Kind() == reflect.Ptr { + t = t.Elem() + } + return t == contextType +} + +// Does t satisfy the error interface? +func isErrorType(t reflect.Type) bool { + for t.Kind() == reflect.Ptr { + t = t.Elem() + } + return t.Implements(errorType) +} + +// Is t Subscription or *Subscription? +func isSubscriptionType(t reflect.Type) bool { + for t.Kind() == reflect.Ptr { + t = t.Elem() + } + return t == subscriptionType +} + +// isPubSub tests whether the given method has as as first argument a context.Context and +// returns the pair (Subscription, error). +func isPubSub(methodType reflect.Type) bool { + // numIn(0) is the receiver type + if methodType.NumIn() < 2 || methodType.NumOut() != 2 { + return false + } + return isContextType(methodType.In(1)) && + isSubscriptionType(methodType.Out(0)) && + isErrorType(methodType.Out(1)) +} + +// formatName converts to first character of name to lowercase. +func formatName(name string) string { + ret := []rune(name) + if len(ret) > 0 { + ret[0] = unicode.ToLower(ret[0]) + } + return string(ret) +} diff --git a/rpc/subscription.go b/rpc/subscription.go new file mode 100644 index 0000000000..66c144a603 --- /dev/null +++ b/rpc/subscription.go @@ -0,0 +1,385 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "container/list" + "context" + crand "crypto/rand" + "encoding/binary" + "encoding/hex" + "encoding/json" + "errors" + "math/rand" + "reflect" + "strings" + "sync" + "time" +) + +var ( + // ErrNotificationsUnsupported is returned when the connection doesn't support notifications + ErrNotificationsUnsupported = errors.New("notifications not supported") + // ErrNotificationNotFound is returned when the notification for the given id is not found + ErrSubscriptionNotFound = errors.New("subscription not found") +) + +var globalGen = randomIDGenerator() + +// ID defines a pseudo random number that is used to identify RPC subscriptions. +type ID string + +// NewID returns a new, random ID. +func NewID() ID { + return globalGen() +} + +// randomIDGenerator returns a function generates a random IDs. +func randomIDGenerator() func() ID { + var buf = make([]byte, 8) + var seed int64 + if _, err := crand.Read(buf); err == nil { + seed = int64(binary.BigEndian.Uint64(buf)) + } else { + seed = int64(time.Now().Nanosecond()) + } + + var ( + mu sync.Mutex + rng = rand.New(rand.NewSource(seed)) + ) + return func() ID { + mu.Lock() + defer mu.Unlock() + id := make([]byte, 16) + rng.Read(id) + return encodeID(id) + } +} + +func encodeID(b []byte) ID { + id := hex.EncodeToString(b) + id = strings.TrimLeft(id, "0") + if id == "" { + id = "0" // ID's are RPC quantities, no leading zero's and 0 is 0x0. + } + return ID("0x" + id) +} + +type notifierKey struct{} + +// NotifierFromContext returns the Notifier value stored in ctx, if any. +func NotifierFromContext(ctx context.Context) (*Notifier, bool) { + n, ok := ctx.Value(notifierKey{}).(*Notifier) + return n, ok +} + +// Notifier is tied to a RPC connection that supports subscriptions. +// Server callbacks use the notifier to send notifications. +type Notifier struct { + h *handler + namespace string + + mu sync.Mutex + sub *Subscription + buffer []json.RawMessage + callReturned bool + activated bool +} + +// CreateSubscription returns a new subscription that is coupled to the +// RPC connection. By default subscriptions are inactive and notifications +// are dropped until the subscription is marked as active. This is done +// by the RPC server after the subscription ID is send to the client. +func (n *Notifier) CreateSubscription() *Subscription { + n.mu.Lock() + defer n.mu.Unlock() + + if n.sub != nil { + panic("can't create multiple subscriptions with Notifier") + } else if n.callReturned { + panic("can't create subscription after subscribe call has returned") + } + n.sub = &Subscription{ID: n.h.idgen(), namespace: n.namespace, err: make(chan error, 1)} + return n.sub +} + +// Notify sends a notification to the client with the given data as payload. +// If an error occurs the RPC connection is closed and the error is returned. +func (n *Notifier) Notify(id ID, data interface{}) error { + enc, err := json.Marshal(data) + if err != nil { + return err + } + + n.mu.Lock() + defer n.mu.Unlock() + + if n.sub == nil { + panic("can't Notify before subscription is created") + } else if n.sub.ID != id { + panic("Notify with wrong ID") + } + if n.activated { + return n.send(n.sub, enc) + } + n.buffer = append(n.buffer, enc) + return nil +} + +// Closed returns a channel that is closed when the RPC connection is closed. +// Deprecated: use subscription error channel +func (n *Notifier) Closed() <-chan interface{} { + return n.h.conn.closed() +} + +// takeSubscription returns the subscription (if one has been created). No subscription can +// be created after this call. +func (n *Notifier) takeSubscription() *Subscription { + n.mu.Lock() + defer n.mu.Unlock() + n.callReturned = true + return n.sub +} + +// activate is called after the subscription ID was sent to client. Notifications are +// buffered before activation. This prevents notifications being sent to the client before +// the subscription ID is sent to the client. +func (n *Notifier) activate() error { + n.mu.Lock() + defer n.mu.Unlock() + + for _, data := range n.buffer { + if err := n.send(n.sub, data); err != nil { + return err + } + } + n.activated = true + return nil +} + +func (n *Notifier) send(sub *Subscription, data json.RawMessage) error { + params, _ := json.Marshal(&subscriptionResult{ID: string(sub.ID), Result: data}) + ctx := context.Background() + return n.h.conn.writeJSON(ctx, &jsonrpcMessage{ + Version: vsn, + Method: n.namespace + notificationMethodSuffix, + Params: params, + }) +} + +// A Subscription is created by a notifier and tied to that notifier. The client can use +// this subscription to wait for an unsubscribe request for the client, see Err(). +type Subscription struct { + ID ID + namespace string + err chan error // closed on unsubscribe +} + +// Err returns a channel that is closed when the client send an unsubscribe request. +func (s *Subscription) Err() <-chan error { + return s.err +} + +// MarshalJSON marshals a subscription as its ID. +func (s *Subscription) MarshalJSON() ([]byte, error) { + return json.Marshal(s.ID) +} + +// ClientSubscription is a subscription established through the Client's Subscribe or +// EthSubscribe methods. +type ClientSubscription struct { + client *Client + etype reflect.Type + channel reflect.Value + namespace string + subid string + + // The in channel receives notification values from client dispatcher. + in chan json.RawMessage + + // The error channel receives the error from the forwarding loop. + // It is closed by Unsubscribe. + err chan error + errOnce sync.Once + + // Closing of the subscription is requested by sending on 'quit'. This is handled by + // the forwarding loop, which closes 'forwardDone' when it has stopped sending to + // sub.channel. Finally, 'unsubDone' is closed after unsubscribing on the server side. + quit chan error + forwardDone chan struct{} + unsubDone chan struct{} +} + +// This is the sentinel value sent on sub.quit when Unsubscribe is called. +var errUnsubscribed = errors.New("unsubscribed") + +func newClientSubscription(c *Client, namespace string, channel reflect.Value) *ClientSubscription { + sub := &ClientSubscription{ + client: c, + namespace: namespace, + etype: channel.Type().Elem(), + channel: channel, + in: make(chan json.RawMessage), + quit: make(chan error), + forwardDone: make(chan struct{}), + unsubDone: make(chan struct{}), + err: make(chan error, 1), + } + return sub +} + +// Err returns the subscription error channel. The intended use of Err is to schedule +// resubscription when the client connection is closed unexpectedly. +// +// The error channel receives a value when the subscription has ended due to an error. The +// received error is nil if Close has been called on the underlying client and no other +// error has occurred. +// +// The error channel is closed when Unsubscribe is called on the subscription. +func (sub *ClientSubscription) Err() <-chan error { + return sub.err +} + +// Unsubscribe unsubscribes the notification and closes the error channel. +// It can safely be called more than once. +func (sub *ClientSubscription) Unsubscribe() { + sub.errOnce.Do(func() { + select { + case sub.quit <- errUnsubscribed: + <-sub.unsubDone + case <-sub.unsubDone: + } + close(sub.err) + }) +} + +// deliver is called by the client's message dispatcher to send a notification value. +func (sub *ClientSubscription) deliver(result json.RawMessage) (ok bool) { + select { + case sub.in <- result: + return true + case <-sub.forwardDone: + return false + } +} + +// close is called by the client's message dispatcher when the connection is closed. +func (sub *ClientSubscription) close(err error) { + select { + case sub.quit <- err: + case <-sub.forwardDone: + } +} + +// run is the forwarding loop of the subscription. It runs in its own goroutine and +// is launched by the client's handler after the subscription has been created. +func (sub *ClientSubscription) run() { + defer close(sub.unsubDone) + + unsubscribe, err := sub.forward() + + // The client's dispatch loop won't be able to execute the unsubscribe call if it is + // blocked in sub.deliver() or sub.close(). Closing forwardDone unblocks them. + close(sub.forwardDone) + + // Call the unsubscribe method on the server. + if unsubscribe { + sub.requestUnsubscribe() + } + + // Send the error. + if err != nil { + if err == ErrClientQuit { + // ErrClientQuit gets here when Client.Close is called. This is reported as a + // nil error because it's not an error, but we can't close sub.err here. + err = nil + } + sub.err <- err + } +} + +// forward is the forwarding loop. It takes in RPC notifications and sends them +// on the subscription channel. +func (sub *ClientSubscription) forward() (unsubscribeServer bool, err error) { + cases := []reflect.SelectCase{ + {Dir: reflect.SelectRecv, Chan: reflect.ValueOf(sub.quit)}, + {Dir: reflect.SelectRecv, Chan: reflect.ValueOf(sub.in)}, + {Dir: reflect.SelectSend, Chan: sub.channel}, + } + buffer := list.New() + + for { + var chosen int + var recv reflect.Value + if buffer.Len() == 0 { + // Idle, omit send case. + chosen, recv, _ = reflect.Select(cases[:2]) + } else { + // Non-empty buffer, send the first queued item. + cases[2].Send = reflect.ValueOf(buffer.Front().Value) + chosen, recv, _ = reflect.Select(cases) + } + + switch chosen { + case 0: // <-sub.quit + if !recv.IsNil() { + err = recv.Interface().(error) + } + if err == errUnsubscribed { + // Exiting because Unsubscribe was called, unsubscribe on server. + return true, nil + } + return false, err + + case 1: // <-sub.in + val, err := sub.unmarshal(recv.Interface().(json.RawMessage)) + if err != nil { + return true, err + } + if buffer.Len() == maxClientSubscriptionBuffer { + return true, ErrSubscriptionQueueOverflow + } + buffer.PushBack(val) + + case 2: // sub.channel<- + cases[2].Send = reflect.Value{} // Don't hold onto the value. + buffer.Remove(buffer.Front()) + } + } +} + +func (sub *ClientSubscription) unmarshal(result json.RawMessage) (interface{}, error) { + val := reflect.New(sub.etype) + err := json.Unmarshal(result, val.Interface()) + return val.Elem().Interface(), err +} + +func (sub *ClientSubscription) requestUnsubscribe() error { + var result interface{} + return sub.client.Call(&result, sub.namespace+unsubscribeMethodSuffix, sub.subid) +} diff --git a/rpc/subscription_test.go b/rpc/subscription_test.go new file mode 100644 index 0000000000..780d028fc9 --- /dev/null +++ b/rpc/subscription_test.go @@ -0,0 +1,230 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "encoding/json" + "fmt" + "net" + "strings" + "testing" + "time" +) + +func TestNewID(t *testing.T) { + hexchars := "0123456789ABCDEFabcdef" + for i := 0; i < 100; i++ { + id := string(NewID()) + if !strings.HasPrefix(id, "0x") { + t.Fatalf("invalid ID prefix, want '0x...', got %s", id) + } + + id = id[2:] + if len(id) == 0 || len(id) > 32 { + t.Fatalf("invalid ID length, want len(id) > 0 && len(id) <= 32), got %d", len(id)) + } + + for i := 0; i < len(id); i++ { + if strings.IndexByte(hexchars, id[i]) == -1 { + t.Fatalf("unexpected byte, want any valid hex char, got %c", id[i]) + } + } + } +} + +func TestSubscriptions(t *testing.T) { + var ( + namespaces = []string{"eth", "shh", "bzz"} + service = ¬ificationTestService{} + subCount = len(namespaces) + notificationCount = 3 + + server = NewServer(0) + clientConn, serverConn = net.Pipe() + out = json.NewEncoder(clientConn) + in = json.NewDecoder(clientConn) + successes = make(chan subConfirmation) + notifications = make(chan subscriptionResult) + errors = make(chan error, subCount*notificationCount+1) + ) + + // setup and start server + for _, namespace := range namespaces { + if err := server.RegisterName(namespace, service); err != nil { + t.Fatalf("unable to register test service %v", err) + } + } + go server.ServeCodec(NewCodec(serverConn), 0, 0, 0, 0) + defer server.Stop() + + // wait for message and write them to the given channels + go waitForMessages(in, successes, notifications, errors) + + // create subscriptions one by one + for i, namespace := range namespaces { + request := map[string]interface{}{ + "id": i, + "method": fmt.Sprintf("%s_subscribe", namespace), + "version": "2.0", + "params": []interface{}{"someSubscription", notificationCount, i}, + } + if err := out.Encode(&request); err != nil { + t.Fatalf("Could not create subscription: %v", err) + } + } + + timeout := time.After(30 * time.Second) + subids := make(map[string]string, subCount) + count := make(map[string]int, subCount) + allReceived := func() bool { + done := len(count) == subCount + for _, c := range count { + if c < notificationCount { + done = false + } + } + return done + } + for !allReceived() { + select { + case confirmation := <-successes: // subscription created + subids[namespaces[confirmation.reqid]] = string(confirmation.subid) + case notification := <-notifications: + count[notification.ID]++ + case err := <-errors: + t.Fatal(err) + case <-timeout: + for _, namespace := range namespaces { + subid, found := subids[namespace] + if !found { + t.Errorf("subscription for %q not created", namespace) + continue + } + if count, found := count[subid]; !found || count < notificationCount { + t.Errorf("didn't receive all notifications (%d<%d) in time for namespace %q", count, notificationCount, namespace) + } + } + t.Fatal("timed out") + } + } +} + +// This test checks that unsubscribing works. +func TestServerUnsubscribe(t *testing.T) { + p1, p2 := net.Pipe() + defer p2.Close() + + // Start the server. + server := newTestServer() + service := ¬ificationTestService{unsubscribed: make(chan string, 1)} + server.RegisterName("nftest2", service) + go server.ServeCodec(NewCodec(p1), 0, 0, 0, 0) + + // Subscribe. + p2.SetDeadline(time.Now().Add(10 * time.Second)) + p2.Write([]byte(`{"jsonrpc":"2.0","id":1,"method":"nftest2_subscribe","params":["someSubscription",0,10]}`)) + + // Handle received messages. + var ( + resps = make(chan subConfirmation) + notifications = make(chan subscriptionResult) + errors = make(chan error, 1) + ) + go waitForMessages(json.NewDecoder(p2), resps, notifications, errors) + + // Receive the subscription ID. + var sub subConfirmation + select { + case sub = <-resps: + case err := <-errors: + t.Fatal(err) + } + + // Unsubscribe and check that it is handled on the server side. + p2.Write([]byte(`{"jsonrpc":"2.0","method":"nftest2_unsubscribe","params":["` + sub.subid + `"]}`)) + for { + select { + case id := <-service.unsubscribed: + if id != string(sub.subid) { + t.Errorf("wrong subscription ID unsubscribed") + } + return + case err := <-errors: + t.Fatal(err) + case <-notifications: + // drop notifications + } + } +} + +type subConfirmation struct { + reqid int + subid ID +} + +// waitForMessages reads RPC messages from 'in' and dispatches them into the given channels. +// It stops if there is an error. +func waitForMessages(in *json.Decoder, successes chan subConfirmation, notifications chan subscriptionResult, errors chan error) { + for { + resp, notification, err := readAndValidateMessage(in) + if err != nil { + errors <- err + return + } else if resp != nil { + successes <- *resp + } else { + notifications <- *notification + } + } +} + +func readAndValidateMessage(in *json.Decoder) (*subConfirmation, *subscriptionResult, error) { + var msg jsonrpcMessage + if err := in.Decode(&msg); err != nil { + return nil, nil, fmt.Errorf("decode error: %v", err) + } + switch { + case msg.isNotification(): + var res subscriptionResult + if err := json.Unmarshal(msg.Params, &res); err != nil { + return nil, nil, fmt.Errorf("invalid subscription result: %v", err) + } + return nil, &res, nil + case msg.isResponse(): + var c subConfirmation + if msg.Error != nil { + return nil, nil, msg.Error + } else if err := json.Unmarshal(msg.Result, &c.subid); err != nil { + return nil, nil, fmt.Errorf("invalid response: %v", err) + } else { + json.Unmarshal(msg.ID, &c.reqid) + return &c, nil, nil + } + default: + return nil, nil, fmt.Errorf("unrecognized message: %v", msg) + } +} diff --git a/rpc/testdata/invalid-badid.js b/rpc/testdata/invalid-badid.js new file mode 100644 index 0000000000..2202b8ccd2 --- /dev/null +++ b/rpc/testdata/invalid-badid.js @@ -0,0 +1,7 @@ +// This test checks processing of messages with invalid ID. + +--> {"id":[],"method":"test_foo"} +<-- {"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}} + +--> {"id":{},"method":"test_foo"} +<-- {"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}} diff --git a/rpc/testdata/invalid-batch.js b/rpc/testdata/invalid-batch.js new file mode 100644 index 0000000000..768dbc837e --- /dev/null +++ b/rpc/testdata/invalid-batch.js @@ -0,0 +1,17 @@ +// This test checks the behavior of batches with invalid elements. +// Empty batches are not allowed. Batches may contain junk. + +--> [] +<-- {"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"empty batch"}} + +--> [1] +<-- [{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}}] + +--> [1,2,3] +<-- [{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}},{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}},{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}}] + +--> [null] +<-- [{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}}] + +--> [{"jsonrpc":"2.0","id":1,"method":"test_echo","params":["foo",1]},55,{"jsonrpc":"2.0","id":2,"method":"unknown_method"},{"foo":"bar"}] +<-- [{"jsonrpc":"2.0","id":1,"result":{"String":"foo","Int":1,"Args":null}},{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}},{"jsonrpc":"2.0","id":2,"error":{"code":-32601,"message":"the method unknown_method does not exist/is not available"}},{"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}}] diff --git a/rpc/testdata/invalid-idonly.js b/rpc/testdata/invalid-idonly.js new file mode 100644 index 0000000000..79997bee30 --- /dev/null +++ b/rpc/testdata/invalid-idonly.js @@ -0,0 +1,7 @@ +// This test checks processing of messages that contain just the ID and nothing else. + +--> {"id":1} +<-- {"jsonrpc":"2.0","id":1,"error":{"code":-32600,"message":"invalid request"}} + +--> {"jsonrpc":"2.0","id":1} +<-- {"jsonrpc":"2.0","id":1,"error":{"code":-32600,"message":"invalid request"}} diff --git a/rpc/testdata/invalid-nonobj.js b/rpc/testdata/invalid-nonobj.js new file mode 100644 index 0000000000..ffdd4a5b87 --- /dev/null +++ b/rpc/testdata/invalid-nonobj.js @@ -0,0 +1,7 @@ +// This test checks behavior for invalid requests. + +--> 1 +<-- {"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}} + +--> null +<-- {"jsonrpc":"2.0","id":null,"error":{"code":-32600,"message":"invalid request"}} diff --git a/rpc/testdata/invalid-syntax.json b/rpc/testdata/invalid-syntax.json new file mode 100644 index 0000000000..b194299603 --- /dev/null +++ b/rpc/testdata/invalid-syntax.json @@ -0,0 +1,5 @@ +// This test checks that an error is written for invalid JSON requests. + +--> 'f +<-- {"jsonrpc":"2.0","id":null,"error":{"code":-32700,"message":"invalid character '\\'' looking for beginning of value"}} + diff --git a/rpc/testdata/reqresp-batch.js b/rpc/testdata/reqresp-batch.js new file mode 100644 index 0000000000..977af76630 --- /dev/null +++ b/rpc/testdata/reqresp-batch.js @@ -0,0 +1,8 @@ +// There is no response for all-notification batches. + +--> [{"jsonrpc":"2.0","method":"test_echo","params":["x",99]}] + +// This test checks regular batch calls. + +--> [{"jsonrpc":"2.0","id":2,"method":"test_echo","params":[]}, {"jsonrpc":"2.0","id": 3,"method":"test_echo","params":["x",3]}] +<-- [{"jsonrpc":"2.0","id":2,"error":{"code":-32602,"message":"missing value for required argument 0"}},{"jsonrpc":"2.0","id":3,"result":{"String":"x","Int":3,"Args":null}}] diff --git a/rpc/testdata/reqresp-echo.js b/rpc/testdata/reqresp-echo.js new file mode 100644 index 0000000000..7a9e90321c --- /dev/null +++ b/rpc/testdata/reqresp-echo.js @@ -0,0 +1,16 @@ +// This test calls the test_echo method. + +--> {"jsonrpc": "2.0", "id": 2, "method": "test_echo", "params": []} +<-- {"jsonrpc":"2.0","id":2,"error":{"code":-32602,"message":"missing value for required argument 0"}} + +--> {"jsonrpc": "2.0", "id": 2, "method": "test_echo", "params": ["x"]} +<-- {"jsonrpc":"2.0","id":2,"error":{"code":-32602,"message":"missing value for required argument 1"}} + +--> {"jsonrpc": "2.0", "id": 2, "method": "test_echo", "params": ["x", 3]} +<-- {"jsonrpc":"2.0","id":2,"result":{"String":"x","Int":3,"Args":null}} + +--> {"jsonrpc": "2.0", "id": 2, "method": "test_echo", "params": ["x", 3, {"S": "foo"}]} +<-- {"jsonrpc":"2.0","id":2,"result":{"String":"x","Int":3,"Args":{"S":"foo"}}} + +--> {"jsonrpc": "2.0", "id": 2, "method": "test_echoWithCtx", "params": ["x", 3, {"S": "foo"}]} +<-- {"jsonrpc":"2.0","id":2,"result":{"String":"x","Int":3,"Args":{"S":"foo"}}} diff --git a/rpc/testdata/reqresp-namedparam.js b/rpc/testdata/reqresp-namedparam.js new file mode 100644 index 0000000000..9a9372b0a7 --- /dev/null +++ b/rpc/testdata/reqresp-namedparam.js @@ -0,0 +1,5 @@ +// This test checks that an error response is sent for calls +// with named parameters. + +--> {"jsonrpc":"2.0","method":"test_echo","params":{"int":23},"id":3} +<-- {"jsonrpc":"2.0","id":3,"error":{"code":-32602,"message":"non-array args"}} diff --git a/rpc/testdata/reqresp-noargsrets.js b/rpc/testdata/reqresp-noargsrets.js new file mode 100644 index 0000000000..e61cc708ba --- /dev/null +++ b/rpc/testdata/reqresp-noargsrets.js @@ -0,0 +1,4 @@ +// This test calls the test_noArgsRets method. + +--> {"jsonrpc": "2.0", "id": "foo", "method": "test_noArgsRets", "params": []} +<-- {"jsonrpc":"2.0","id":"foo","result":null} diff --git a/rpc/testdata/reqresp-nomethod.js b/rpc/testdata/reqresp-nomethod.js new file mode 100644 index 0000000000..58ea6f3079 --- /dev/null +++ b/rpc/testdata/reqresp-nomethod.js @@ -0,0 +1,4 @@ +// This test calls a method that doesn't exist. + +--> {"jsonrpc": "2.0", "id": 2, "method": "invalid_method", "params": [2, 3]} +<-- {"jsonrpc":"2.0","id":2,"error":{"code":-32601,"message":"the method invalid_method does not exist/is not available"}} diff --git a/rpc/testdata/reqresp-noparam.js b/rpc/testdata/reqresp-noparam.js new file mode 100644 index 0000000000..2edf486d9f --- /dev/null +++ b/rpc/testdata/reqresp-noparam.js @@ -0,0 +1,4 @@ +// This test checks that calls with no parameters work. + +--> {"jsonrpc":"2.0","method":"test_noArgsRets","id":3} +<-- {"jsonrpc":"2.0","id":3,"result":null} diff --git a/rpc/testdata/reqresp-paramsnull.js b/rpc/testdata/reqresp-paramsnull.js new file mode 100644 index 0000000000..8a01bae1bb --- /dev/null +++ b/rpc/testdata/reqresp-paramsnull.js @@ -0,0 +1,4 @@ +// This test checks that calls with "params":null work. + +--> {"jsonrpc":"2.0","method":"test_noArgsRets","params":null,"id":3} +<-- {"jsonrpc":"2.0","id":3,"result":null} diff --git a/rpc/testdata/revcall.js b/rpc/testdata/revcall.js new file mode 100644 index 0000000000..695d9858f8 --- /dev/null +++ b/rpc/testdata/revcall.js @@ -0,0 +1,6 @@ +// This test checks reverse calls. + +--> {"jsonrpc":"2.0","id":2,"method":"test_callMeBack","params":["foo",[1]]} +<-- {"jsonrpc":"2.0","id":1,"method":"foo","params":[1]} +--> {"jsonrpc":"2.0","id":1,"result":"my result"} +<-- {"jsonrpc":"2.0","id":2,"result":"my result"} diff --git a/rpc/testdata/revcall2.js b/rpc/testdata/revcall2.js new file mode 100644 index 0000000000..acab46551e --- /dev/null +++ b/rpc/testdata/revcall2.js @@ -0,0 +1,7 @@ +// This test checks reverse calls. + +--> {"jsonrpc":"2.0","id":2,"method":"test_callMeBackLater","params":["foo",[1]]} +<-- {"jsonrpc":"2.0","id":2,"result":null} +<-- {"jsonrpc":"2.0","id":1,"method":"foo","params":[1]} +--> {"jsonrpc":"2.0","id":1,"result":"my result"} + diff --git a/rpc/testdata/subscription.js b/rpc/testdata/subscription.js new file mode 100644 index 0000000000..9f10073010 --- /dev/null +++ b/rpc/testdata/subscription.js @@ -0,0 +1,12 @@ +// This test checks basic subscription support. + +--> {"jsonrpc":"2.0","id":1,"method":"nftest_subscribe","params":["someSubscription",5,1]} +<-- {"jsonrpc":"2.0","id":1,"result":"0x1"} +<-- {"jsonrpc":"2.0","method":"nftest_subscription","params":{"subscription":"0x1","result":1}} +<-- {"jsonrpc":"2.0","method":"nftest_subscription","params":{"subscription":"0x1","result":2}} +<-- {"jsonrpc":"2.0","method":"nftest_subscription","params":{"subscription":"0x1","result":3}} +<-- {"jsonrpc":"2.0","method":"nftest_subscription","params":{"subscription":"0x1","result":4}} +<-- {"jsonrpc":"2.0","method":"nftest_subscription","params":{"subscription":"0x1","result":5}} + +--> {"jsonrpc":"2.0","id":2,"method":"nftest_echo","params":[11]} +<-- {"jsonrpc":"2.0","id":2,"result":11} diff --git a/rpc/testservice_test.go b/rpc/testservice_test.go new file mode 100644 index 0000000000..718ab19c90 --- /dev/null +++ b/rpc/testservice_test.go @@ -0,0 +1,216 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "encoding/binary" + "errors" + "strings" + "sync" + "time" +) + +func newTestServer() *Server { + server := NewServer(0) + server.idgen = sequentialIDGenerator() + if err := server.RegisterName("test", new(testService)); err != nil { + panic(err) + } + if err := server.RegisterName("nftest", new(notificationTestService)); err != nil { + panic(err) + } + return server +} + +func sequentialIDGenerator() func() ID { + var ( + mu sync.Mutex + counter uint64 + ) + return func() ID { + mu.Lock() + defer mu.Unlock() + counter++ + id := make([]byte, 8) + binary.BigEndian.PutUint64(id, counter) + return encodeID(id) + } +} + +type testService struct{} + +type echoArgs struct { + S string +} + +type echoResult struct { + String string + Int int + Args *echoArgs +} + +type testError struct{} + +func (testError) Error() string { return "testError" } +func (testError) ErrorCode() int { return 444 } +func (testError) ErrorData() interface{} { return "testError data" } + +func (s *testService) NoArgsRets() {} + +func (s *testService) Echo(str string, i int, args *echoArgs) echoResult { + return echoResult{str, i, args} +} + +func (s *testService) EchoWithCtx(ctx context.Context, str string, i int, args *echoArgs) echoResult { + return echoResult{str, i, args} +} + +func (s *testService) Sleep(ctx context.Context, duration time.Duration) { + time.Sleep(duration) +} + +func (s *testService) Block(ctx context.Context) error { + <-ctx.Done() + return errors.New("context canceled in testservice_block") +} + +func (s *testService) Rets() (string, error) { + return "", nil +} + +//lint:ignore ST1008 returns error first on purpose. +func (s *testService) InvalidRets1() (error, string) { + return nil, "" +} + +func (s *testService) InvalidRets2() (string, string) { + return "", "" +} + +func (s *testService) InvalidRets3() (string, string, error) { + return "", "", nil +} + +func (s *testService) ReturnError() error { + return testError{} +} + +func (s *testService) CallMeBack(ctx context.Context, method string, args []interface{}) (interface{}, error) { + c, ok := ClientFromContext(ctx) + if !ok { + return nil, errors.New("no client") + } + var result interface{} + err := c.Call(&result, method, args...) + return result, err +} + +func (s *testService) CallMeBackLater(ctx context.Context, method string, args []interface{}) error { + c, ok := ClientFromContext(ctx) + if !ok { + return errors.New("no client") + } + go func() { + <-ctx.Done() + var result interface{} + c.Call(&result, method, args...) + }() + return nil +} + +func (s *testService) Subscription(ctx context.Context) (*Subscription, error) { + return nil, nil +} + +type notificationTestService struct { + unsubscribed chan string + gotHangSubscriptionReq chan struct{} + unblockHangSubscription chan struct{} +} + +func (s *notificationTestService) Echo(i int) int { + return i +} + +func (s *notificationTestService) Unsubscribe(subid string) { + if s.unsubscribed != nil { + s.unsubscribed <- subid + } +} + +func (s *notificationTestService) SomeSubscription(ctx context.Context, n, val int) (*Subscription, error) { + notifier, supported := NotifierFromContext(ctx) + if !supported { + return nil, ErrNotificationsUnsupported + } + + // By explicitly creating an subscription we make sure that the subscription id is send + // back to the client before the first subscription.Notify is called. Otherwise the + // events might be send before the response for the *_subscribe method. + subscription := notifier.CreateSubscription() + go func() { + for i := 0; i < n; i++ { + if err := notifier.Notify(subscription.ID, val+i); err != nil { + return + } + } + select { + case <-notifier.Closed(): + case <-subscription.Err(): + } + if s.unsubscribed != nil { + s.unsubscribed <- string(subscription.ID) + } + }() + return subscription, nil +} + +// HangSubscription blocks on s.unblockHangSubscription before sending anything. +func (s *notificationTestService) HangSubscription(ctx context.Context, val int) (*Subscription, error) { + notifier, supported := NotifierFromContext(ctx) + if !supported { + return nil, ErrNotificationsUnsupported + } + s.gotHangSubscriptionReq <- struct{}{} + <-s.unblockHangSubscription + subscription := notifier.CreateSubscription() + + go func() { + notifier.Notify(subscription.ID, val) + }() + return subscription, nil +} + +// largeRespService generates arbitrary-size JSON responses. +type largeRespService struct { + length int +} + +func (x largeRespService) LargeResp() string { + return strings.Repeat("x", x.length) +} diff --git a/rpc/types.go b/rpc/types.go new file mode 100644 index 0000000000..96015551c3 --- /dev/null +++ b/rpc/types.go @@ -0,0 +1,267 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "encoding/json" + "fmt" + "math" + "strconv" + "strings" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +// API describes the set of methods offered over the RPC interface +type API struct { + Namespace string // namespace under which the rpc methods of Service are exposed + Version string // api version for DApp's + Service interface{} // receiver instance which holds the methods + Public bool // indication if the methods must be considered safe for public use +} + +// ServerCodec implements reading, parsing and writing RPC messages for the server side of +// a RPC session. Implementations must be go-routine safe since the codec can be called in +// multiple go-routines concurrently. +type ServerCodec interface { + readBatch() (msgs []*jsonrpcMessage, isBatch bool, err error) + close() + jsonWriter +} + +// jsonWriter can write JSON messages to its underlying connection. +// Implementations must be safe for concurrent use. +type jsonWriter interface { + writeJSON(context.Context, interface{}) error + writeJSONSkipDeadline(context.Context, interface{}, bool) error + // Closed returns a channel which is closed when the connection is closed. + closed() <-chan interface{} + // RemoteAddr returns the peer address of the connection. + remoteAddr() string +} + +type BlockNumber int64 + +const ( + AcceptedBlockNumber = BlockNumber(-3) + PendingBlockNumber = BlockNumber(-2) + LatestBlockNumber = BlockNumber(-1) + EarliestBlockNumber = BlockNumber(0) +) + +// UnmarshalJSON parses the given JSON fragment into a BlockNumber. It supports: +// - "latest", "earliest" or "pending" as string arguments +// - the block number +// Returned errors: +// - an invalid block number error when the given argument isn't a known strings +// - an out of range error when the given block number is either too little or too large +func (bn *BlockNumber) UnmarshalJSON(data []byte) error { + input := strings.TrimSpace(string(data)) + if len(input) >= 2 && input[0] == '"' && input[len(input)-1] == '"' { + input = input[1 : len(input)-1] + } + + switch input { + case "earliest": + *bn = EarliestBlockNumber + return nil + case "latest": + *bn = LatestBlockNumber + return nil + case "pending": + *bn = PendingBlockNumber + return nil + case "accepted": + *bn = AcceptedBlockNumber + return nil + } + + blckNum, err := hexutil.DecodeUint64(input) + if err != nil { + return err + } + if blckNum > math.MaxInt64 { + return fmt.Errorf("block number larger than int64") + } + *bn = BlockNumber(blckNum) + return nil +} + +// MarshalText implements encoding.TextMarshaler. It marshals: +// - "latest", "earliest" or "pending" as strings +// - other numbers as hex +func (bn BlockNumber) MarshalText() ([]byte, error) { + switch bn { + case EarliestBlockNumber: + return []byte("earliest"), nil + case LatestBlockNumber: + return []byte("latest"), nil + case PendingBlockNumber: + return []byte("pending"), nil + case AcceptedBlockNumber: + return []byte("accepted"), nil + default: + return hexutil.Uint64(bn).MarshalText() + } +} + +func (bn BlockNumber) Int64() int64 { + return (int64)(bn) +} + +// IsAccepted returns true if this blockNumber should be treated as a request for the last accepted block +func (bn BlockNumber) IsAccepted() bool { + return bn < EarliestBlockNumber && bn >= AcceptedBlockNumber +} + +type BlockNumberOrHash struct { + BlockNumber *BlockNumber `json:"blockNumber,omitempty"` + BlockHash *common.Hash `json:"blockHash,omitempty"` + RequireCanonical bool `json:"requireCanonical,omitempty"` +} + +func (bnh *BlockNumberOrHash) UnmarshalJSON(data []byte) error { + type erased BlockNumberOrHash + e := erased{} + err := json.Unmarshal(data, &e) + if err == nil { + if e.BlockNumber != nil && e.BlockHash != nil { + return fmt.Errorf("cannot specify both BlockHash and BlockNumber, choose one or the other") + } + bnh.BlockNumber = e.BlockNumber + bnh.BlockHash = e.BlockHash + bnh.RequireCanonical = e.RequireCanonical + return nil + } + var input string + err = json.Unmarshal(data, &input) + if err != nil { + return err + } + switch input { + case "earliest": + bn := EarliestBlockNumber + bnh.BlockNumber = &bn + return nil + case "latest": + bn := LatestBlockNumber + bnh.BlockNumber = &bn + return nil + case "pending": + bn := PendingBlockNumber + bnh.BlockNumber = &bn + return nil + case "accepted": + bn := AcceptedBlockNumber + bnh.BlockNumber = &bn + return nil + default: + if len(input) == 66 { + hash := common.Hash{} + err := hash.UnmarshalText([]byte(input)) + if err != nil { + return err + } + bnh.BlockHash = &hash + return nil + } else { + blckNum, err := hexutil.DecodeUint64(input) + if err != nil { + return err + } + if blckNum > math.MaxInt64 { + return fmt.Errorf("blocknumber too high") + } + bn := BlockNumber(blckNum) + bnh.BlockNumber = &bn + return nil + } + } +} + +func (bnh *BlockNumberOrHash) Number() (BlockNumber, bool) { + if bnh.BlockNumber != nil { + return *bnh.BlockNumber, true + } + return BlockNumber(0), false +} + +func (bnh *BlockNumberOrHash) String() string { + if bnh.BlockNumber != nil { + return strconv.Itoa(int(*bnh.BlockNumber)) + } + if bnh.BlockHash != nil { + return bnh.BlockHash.String() + } + return "nil" +} + +func (bnh *BlockNumberOrHash) Hash() (common.Hash, bool) { + if bnh.BlockHash != nil { + return *bnh.BlockHash, true + } + return common.Hash{}, false +} + +func BlockNumberOrHashWithNumber(blockNr BlockNumber) BlockNumberOrHash { + return BlockNumberOrHash{ + BlockNumber: &blockNr, + BlockHash: nil, + RequireCanonical: false, + } +} + +func BlockNumberOrHashWithHash(hash common.Hash, canonical bool) BlockNumberOrHash { + return BlockNumberOrHash{ + BlockNumber: nil, + BlockHash: &hash, + RequireCanonical: canonical, + } +} + +// DecimalOrHex unmarshals a non-negative decimal or hex parameter into a uint64. +type DecimalOrHex uint64 + +// UnmarshalJSON implements json.Unmarshaler. +func (dh *DecimalOrHex) UnmarshalJSON(data []byte) error { + input := strings.TrimSpace(string(data)) + if len(input) >= 2 && input[0] == '"' && input[len(input)-1] == '"' { + input = input[1 : len(input)-1] + } + + value, err := strconv.ParseUint(input, 10, 64) + if err != nil { + value, err = hexutil.DecodeUint64(input) + } + if err != nil { + return err + } + *dh = DecimalOrHex(value) + return nil +} diff --git a/rpc/types_test.go b/rpc/types_test.go new file mode 100644 index 0000000000..09041cdee7 --- /dev/null +++ b/rpc/types_test.go @@ -0,0 +1,165 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "encoding/json" + "reflect" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" +) + +func TestBlockNumberJSONUnmarshal(t *testing.T) { + tests := []struct { + input string + mustFail bool + expected BlockNumber + }{ + 0: {`"0x"`, true, BlockNumber(0)}, + 1: {`"0x0"`, false, BlockNumber(0)}, + 2: {`"0X1"`, false, BlockNumber(1)}, + 3: {`"0x00"`, true, BlockNumber(0)}, + 4: {`"0x01"`, true, BlockNumber(0)}, + 5: {`"0x1"`, false, BlockNumber(1)}, + 6: {`"0x12"`, false, BlockNumber(18)}, + 7: {`"0x7fffffffffffffff"`, false, BlockNumber(math.MaxInt64)}, + 8: {`"0x8000000000000000"`, true, BlockNumber(0)}, + 9: {"0", true, BlockNumber(0)}, + 10: {`"ff"`, true, BlockNumber(0)}, + 11: {`"pending"`, false, PendingBlockNumber}, + 12: {`"latest"`, false, LatestBlockNumber}, + 13: {`"earliest"`, false, EarliestBlockNumber}, + 14: {`someString`, true, BlockNumber(0)}, + 15: {`""`, true, BlockNumber(0)}, + 16: {``, true, BlockNumber(0)}, + } + + for i, test := range tests { + var num BlockNumber + err := json.Unmarshal([]byte(test.input), &num) + if test.mustFail && err == nil { + t.Errorf("Test %d should fail", i) + continue + } + if !test.mustFail && err != nil { + t.Errorf("Test %d should pass but got err: %v", i, err) + continue + } + if num != test.expected { + t.Errorf("Test %d got unexpected value, want %d, got %d", i, test.expected, num) + } + } +} + +func TestBlockNumberOrHash_UnmarshalJSON(t *testing.T) { + tests := []struct { + input string + mustFail bool + expected BlockNumberOrHash + }{ + 0: {`"0x"`, true, BlockNumberOrHash{}}, + 1: {`"0x0"`, false, BlockNumberOrHashWithNumber(0)}, + 2: {`"0X1"`, false, BlockNumberOrHashWithNumber(1)}, + 3: {`"0x00"`, true, BlockNumberOrHash{}}, + 4: {`"0x01"`, true, BlockNumberOrHash{}}, + 5: {`"0x1"`, false, BlockNumberOrHashWithNumber(1)}, + 6: {`"0x12"`, false, BlockNumberOrHashWithNumber(18)}, + 7: {`"0x7fffffffffffffff"`, false, BlockNumberOrHashWithNumber(math.MaxInt64)}, + 8: {`"0x8000000000000000"`, true, BlockNumberOrHash{}}, + 9: {"0", true, BlockNumberOrHash{}}, + 10: {`"ff"`, true, BlockNumberOrHash{}}, + 11: {`"pending"`, false, BlockNumberOrHashWithNumber(PendingBlockNumber)}, + 12: {`"latest"`, false, BlockNumberOrHashWithNumber(LatestBlockNumber)}, + 13: {`"earliest"`, false, BlockNumberOrHashWithNumber(EarliestBlockNumber)}, + 14: {`someString`, true, BlockNumberOrHash{}}, + 15: {`""`, true, BlockNumberOrHash{}}, + 16: {``, true, BlockNumberOrHash{}}, + 17: {`"0x0000000000000000000000000000000000000000000000000000000000000000"`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), false)}, + 18: {`{"blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000"}`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), false)}, + 19: {`{"blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000","requireCanonical":false}`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), false)}, + 20: {`{"blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000","requireCanonical":true}`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), true)}, + 21: {`{"blockNumber":"0x1"}`, false, BlockNumberOrHashWithNumber(1)}, + 22: {`{"blockNumber":"pending"}`, false, BlockNumberOrHashWithNumber(PendingBlockNumber)}, + 23: {`{"blockNumber":"latest"}`, false, BlockNumberOrHashWithNumber(LatestBlockNumber)}, + 24: {`{"blockNumber":"earliest"}`, false, BlockNumberOrHashWithNumber(EarliestBlockNumber)}, + 25: {`{"blockNumber":"0x1", "blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000"}`, true, BlockNumberOrHash{}}, + } + + for i, test := range tests { + var bnh BlockNumberOrHash + err := json.Unmarshal([]byte(test.input), &bnh) + if test.mustFail && err == nil { + t.Errorf("Test %d should fail", i) + continue + } + if !test.mustFail && err != nil { + t.Errorf("Test %d should pass but got err: %v", i, err) + continue + } + hash, hashOk := bnh.Hash() + expectedHash, expectedHashOk := test.expected.Hash() + num, numOk := bnh.Number() + expectedNum, expectedNumOk := test.expected.Number() + if bnh.RequireCanonical != test.expected.RequireCanonical || + hash != expectedHash || hashOk != expectedHashOk || + num != expectedNum || numOk != expectedNumOk { + t.Errorf("Test %d got unexpected value, want %v, got %v", i, test.expected, bnh) + } + } +} + +func TestBlockNumberOrHash_WithNumber_MarshalAndUnmarshal(t *testing.T) { + tests := []struct { + name string + number int64 + }{ + {"max", math.MaxInt64}, + {"pending", int64(PendingBlockNumber)}, + {"latest", int64(LatestBlockNumber)}, + {"earliest", int64(EarliestBlockNumber)}, + } + for _, test := range tests { + test := test + t.Run(test.name, func(t *testing.T) { + bnh := BlockNumberOrHashWithNumber(BlockNumber(test.number)) + marshalled, err := json.Marshal(bnh) + if err != nil { + t.Fatal("cannot marshal:", err) + } + var unmarshalled BlockNumberOrHash + err = json.Unmarshal(marshalled, &unmarshalled) + if err != nil { + t.Fatal("cannot unmarshal:", err) + } + if !reflect.DeepEqual(bnh, unmarshalled) { + t.Fatalf("wrong result: expected %v, got %v", bnh, unmarshalled) + } + }) + } +} diff --git a/rpc/websocket.go b/rpc/websocket.go new file mode 100644 index 0000000000..a09346d602 --- /dev/null +++ b/rpc/websocket.go @@ -0,0 +1,318 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "encoding/base64" + "fmt" + "net/http" + "net/url" + "os" + "strings" + "sync" + "time" + + mapset "github.com/deckarep/golang-set" + "github.com/ethereum/go-ethereum/log" + "github.com/gorilla/websocket" +) + +const ( + wsReadBuffer = 1024 + wsWriteBuffer = 1024 + wsPingInterval = 30 * time.Second + wsPingWriteTimeout = 5 * time.Second + wsPongTimeout = 30 * time.Second + wsMessageSizeLimit = 15 * 1024 * 1024 +) + +var wsBufferPool = new(sync.Pool) + +// WebsocketHandler returns a handler that serves JSON-RPC to WebSocket connections. +// +// allowedOrigins should be a comma-separated list of allowed origin URLs. +// To allow connections with any origin, pass "*". +func (s *Server) WebsocketHandler(allowedOrigins []string) http.Handler { + return s.WebsocketHandlerWithDuration(allowedOrigins, 0, 0, 0) +} + +func (s *Server) WebsocketHandlerWithDuration(allowedOrigins []string, apiMaxDuration, refillRate, maxStored time.Duration) http.Handler { + var upgrader = websocket.Upgrader{ + ReadBufferSize: wsReadBuffer, + WriteBufferSize: wsWriteBuffer, + WriteBufferPool: wsBufferPool, + CheckOrigin: wsHandshakeValidator(allowedOrigins), + } + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + conn, err := upgrader.Upgrade(w, r, nil) + if err != nil { + log.Debug("WebSocket upgrade failed", "err", err) + return + } + codec := newWebsocketCodec(conn) + s.ServeCodec(codec, 0, apiMaxDuration, refillRate, maxStored) + }) +} + +// wsHandshakeValidator returns a handler that verifies the origin during the +// websocket upgrade process. When a '*' is specified as an allowed origins all +// connections are accepted. +func wsHandshakeValidator(allowedOrigins []string) func(*http.Request) bool { + origins := mapset.NewSet() + allowAllOrigins := false + + for _, origin := range allowedOrigins { + if origin == "*" { + allowAllOrigins = true + } + if origin != "" { + origins.Add(origin) + } + } + // allow localhost if no allowedOrigins are specified. + if len(origins.ToSlice()) == 0 { + origins.Add("http://localhost") + if hostname, err := os.Hostname(); err == nil { + origins.Add("http://" + hostname) + } + } + log.Debug(fmt.Sprintf("Allowed origin(s) for WS RPC interface %v", origins.ToSlice())) + + f := func(req *http.Request) bool { + // Skip origin verification if no Origin header is present. The origin check + // is supposed to protect against browser based attacks. Browsers always set + // Origin. Non-browser software can put anything in origin and checking it doesn't + // provide additional security. + if _, ok := req.Header["Origin"]; !ok { + return true + } + // Verify origin against allow list. + origin := strings.ToLower(req.Header.Get("Origin")) + if allowAllOrigins || originIsAllowed(origins, origin) { + return true + } + log.Warn("Rejected WebSocket connection", "origin", origin) + return false + } + + return f +} + +type wsHandshakeError struct { + err error + status string +} + +func (e wsHandshakeError) Error() string { + s := e.err.Error() + if e.status != "" { + s += " (HTTP status " + e.status + ")" + } + return s +} + +func originIsAllowed(allowedOrigins mapset.Set, browserOrigin string) bool { + it := allowedOrigins.Iterator() + for origin := range it.C { + if ruleAllowsOrigin(origin.(string), browserOrigin) { + return true + } + } + return false +} + +func ruleAllowsOrigin(allowedOrigin string, browserOrigin string) bool { + var ( + allowedScheme, allowedHostname, allowedPort string + browserScheme, browserHostname, browserPort string + err error + ) + allowedScheme, allowedHostname, allowedPort, err = parseOriginURL(allowedOrigin) + if err != nil { + log.Warn("Error parsing allowed origin specification", "spec", allowedOrigin, "error", err) + return false + } + browserScheme, browserHostname, browserPort, err = parseOriginURL(browserOrigin) + if err != nil { + log.Warn("Error parsing browser 'Origin' field", "Origin", browserOrigin, "error", err) + return false + } + if allowedScheme != "" && allowedScheme != browserScheme { + return false + } + if allowedHostname != "" && allowedHostname != browserHostname { + return false + } + if allowedPort != "" && allowedPort != browserPort { + return false + } + return true +} + +func parseOriginURL(origin string) (string, string, string, error) { + parsedURL, err := url.Parse(strings.ToLower(origin)) + if err != nil { + return "", "", "", err + } + var scheme, hostname, port string + if strings.Contains(origin, "://") { + scheme = parsedURL.Scheme + hostname = parsedURL.Hostname() + port = parsedURL.Port() + } else { + scheme = "" + hostname = parsedURL.Scheme + port = parsedURL.Opaque + if hostname == "" { + hostname = origin + } + } + return scheme, hostname, port, nil +} + +// DialWebsocketWithDialer creates a new RPC client that communicates with a JSON-RPC server +// that is listening on the given endpoint using the provided dialer. +func DialWebsocketWithDialer(ctx context.Context, endpoint, origin string, dialer websocket.Dialer) (*Client, error) { + endpoint, header, err := wsClientHeaders(endpoint, origin) + if err != nil { + return nil, err + } + return newClient(ctx, func(ctx context.Context) (ServerCodec, error) { + conn, resp, err := dialer.DialContext(ctx, endpoint, header) + if err != nil { + hErr := wsHandshakeError{err: err} + if resp != nil { + hErr.status = resp.Status + } + return nil, hErr + } + return newWebsocketCodec(conn), nil + }) +} + +// DialWebsocket creates a new RPC client that communicates with a JSON-RPC server +// that is listening on the given endpoint. +// +// The context is used for the initial connection establishment. It does not +// affect subsequent interactions with the client. +func DialWebsocket(ctx context.Context, endpoint, origin string) (*Client, error) { + dialer := websocket.Dialer{ + ReadBufferSize: wsReadBuffer, + WriteBufferSize: wsWriteBuffer, + WriteBufferPool: wsBufferPool, + } + return DialWebsocketWithDialer(ctx, endpoint, origin, dialer) +} + +func wsClientHeaders(endpoint, origin string) (string, http.Header, error) { + endpointURL, err := url.Parse(endpoint) + if err != nil { + return endpoint, nil, err + } + header := make(http.Header) + if origin != "" { + header.Add("origin", origin) + } + if endpointURL.User != nil { + b64auth := base64.StdEncoding.EncodeToString([]byte(endpointURL.User.String())) + header.Add("authorization", "Basic "+b64auth) + endpointURL.User = nil + } + return endpointURL.String(), header, nil +} + +type websocketCodec struct { + *jsonCodec + conn *websocket.Conn + + wg sync.WaitGroup + pingReset chan struct{} +} + +func newWebsocketCodec(conn *websocket.Conn) ServerCodec { + conn.SetReadLimit(wsMessageSizeLimit) + conn.SetPongHandler(func(appData string) error { + conn.SetReadDeadline(time.Time{}) + return nil + }) + wc := &websocketCodec{ + jsonCodec: NewFuncCodec(conn, conn.WriteJSON, conn.ReadJSON).(*jsonCodec), + conn: conn, + pingReset: make(chan struct{}, 1), + } + wc.wg.Add(1) + go wc.pingLoop() + return wc +} + +func (wc *websocketCodec) close() { + wc.jsonCodec.close() + wc.wg.Wait() +} + +func (wc *websocketCodec) writeJSON(ctx context.Context, v interface{}) error { + return wc.writeJSONSkipDeadline(ctx, v, false) +} + +func (wc *websocketCodec) writeJSONSkipDeadline(ctx context.Context, v interface{}, skip bool) error { + err := wc.jsonCodec.writeJSONSkipDeadline(ctx, v, skip) + if err == nil { + // Notify pingLoop to delay the next idle ping. + select { + case wc.pingReset <- struct{}{}: + default: + } + } + return err +} + +// pingLoop sends periodic ping frames when the connection is idle. +func (wc *websocketCodec) pingLoop() { + var timer = time.NewTimer(wsPingInterval) + defer wc.wg.Done() + defer timer.Stop() + + for { + select { + case <-wc.closed(): + return + case <-wc.pingReset: + if !timer.Stop() { + <-timer.C + } + timer.Reset(wsPingInterval) + case <-timer.C: + wc.jsonCodec.encMu.Lock() + wc.conn.SetWriteDeadline(time.Now().Add(wsPingWriteTimeout)) + wc.conn.WriteMessage(websocket.PingMessage, nil) + wc.conn.SetReadDeadline(time.Now().Add(wsPongTimeout)) + wc.jsonCodec.encMu.Unlock() + timer.Reset(wsPingInterval) + } + } +} diff --git a/rpc/websocket_test.go b/rpc/websocket_test.go new file mode 100644 index 0000000000..66d52e57e6 --- /dev/null +++ b/rpc/websocket_test.go @@ -0,0 +1,393 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package rpc + +import ( + "context" + "errors" + "io" + "net" + "net/http" + "net/http/httptest" + "net/http/httputil" + "net/url" + "strings" + "sync/atomic" + "testing" + "time" + + "github.com/gorilla/websocket" +) + +func TestWebsocketClientHeaders(t *testing.T) { + t.Parallel() + + endpoint, header, err := wsClientHeaders("wss://testuser:test-PASS_01@example.com:1234", "https://example.com") + if err != nil { + t.Fatalf("wsGetConfig failed: %s", err) + } + if endpoint != "wss://example.com:1234" { + t.Fatal("User should have been stripped from the URL") + } + if header.Get("authorization") != "Basic dGVzdHVzZXI6dGVzdC1QQVNTXzAx" { + t.Fatal("Basic auth header is incorrect") + } + if header.Get("origin") != "https://example.com" { + t.Fatal("Origin not set") + } +} + +// This test checks that the server rejects connections from disallowed origins. +func TestWebsocketOriginCheck(t *testing.T) { + t.Parallel() + + var ( + srv = newTestServer() + httpsrv = httptest.NewServer(srv.WebsocketHandler([]string{"http://example.com"})) + wsURL = "ws:" + strings.TrimPrefix(httpsrv.URL, "http:") + ) + defer srv.Stop() + defer httpsrv.Close() + + client, err := DialWebsocket(context.Background(), wsURL, "http://ekzample.com") + if err == nil { + client.Close() + t.Fatal("no error for wrong origin") + } + wantErr := wsHandshakeError{websocket.ErrBadHandshake, "403 Forbidden"} + if !errors.Is(err, wantErr) { + t.Fatalf("wrong error for wrong origin: %q", err) + } + + // Connections without origin header should work. + client, err = DialWebsocket(context.Background(), wsURL, "") + if err != nil { + t.Fatal("error for empty origin") + } + client.Close() +} + +// This test checks whether calls exceeding the request size limit are rejected. +/* +func TestWebsocketLargeCall(t *testing.T) { + t.Parallel() + + var ( + srv = newTestServer() + httpsrv = httptest.NewServer(srv.WebsocketHandler([]string{"*"})) + wsURL = "ws:" + strings.TrimPrefix(httpsrv.URL, "http:") + ) + defer srv.Stop() + defer httpsrv.Close() + + client, err := DialWebsocket(context.Background(), wsURL, "") + if err != nil { + t.Fatalf("can't dial: %v", err) + } + defer client.Close() + + // This call sends slightly less than the limit and should work. + var result echoResult + arg := strings.Repeat("x", maxRequestContentLength-200) + if err := client.Call(&result, "test_echo", arg, 1); err != nil { + t.Fatalf("valid call didn't work: %v", err) + } + if result.String != arg { + t.Fatal("wrong string echoed") + } + + // This call sends twice the allowed size and shouldn't work. + arg = strings.Repeat("x", maxRequestContentLength*2) + err = client.Call(&result, "test_echo", arg) + if err == nil { + t.Fatal("no error for too large call") + } +} +*/ + +// This test checks that client handles WebSocket ping frames correctly. +func TestClientWebsocketPing(t *testing.T) { + t.Parallel() + + var ( + sendPing = make(chan struct{}) + server = wsPingTestServer(t, sendPing) + ctx, cancel = context.WithTimeout(context.Background(), 1*time.Second) + ) + defer cancel() + defer server.Shutdown(ctx) + + client, err := DialContext(ctx, "ws://"+server.Addr) + if err != nil { + t.Fatalf("client dial error: %v", err) + } + defer client.Close() + + resultChan := make(chan int) + sub, err := client.EthSubscribe(ctx, resultChan, "foo") + if err != nil { + t.Fatalf("client subscribe error: %v", err) + } + // Note: Unsubscribe is not called on this subscription because the mockup + // server can't handle the request. + + // Wait for the context's deadline to be reached before proceeding. + // This is important for reproducing https://github.com/ethereum/go-ethereum/issues/19798 + <-ctx.Done() + close(sendPing) + + // Wait for the subscription result. + timeout := time.NewTimer(5 * time.Second) + defer timeout.Stop() + for { + select { + case err := <-sub.Err(): + t.Error("client subscription error:", err) + case result := <-resultChan: + t.Log("client got result:", result) + return + case <-timeout.C: + t.Error("didn't get any result within the test timeout") + return + } + } +} + +// This checks that the websocket transport can deal with large messages. +func TestClientWebsocketLargeMessage(t *testing.T) { + var ( + srv = NewServer(0) + httpsrv = httptest.NewServer(srv.WebsocketHandler(nil)) + wsURL = "ws:" + strings.TrimPrefix(httpsrv.URL, "http:") + ) + defer srv.Stop() + defer httpsrv.Close() + + respLength := wsMessageSizeLimit - 50 + srv.RegisterName("test", largeRespService{respLength}) + + c, err := DialWebsocket(context.Background(), wsURL, "") + if err != nil { + t.Fatal(err) + } + + var r string + if err := c.Call(&r, "test_largeResp"); err != nil { + t.Fatal("call failed:", err) + } + if len(r) != respLength { + t.Fatalf("response has wrong length %d, want %d", len(r), respLength) + } +} + +func TestClientWebsocketSevered(t *testing.T) { + t.Parallel() + + var ( + server = wsPingTestServer(t, nil) + ctx = context.Background() + ) + defer server.Shutdown(ctx) + + u, err := url.Parse("http://" + server.Addr) + if err != nil { + t.Fatal(err) + } + rproxy := httputil.NewSingleHostReverseProxy(u) + var severable *severableReadWriteCloser + rproxy.ModifyResponse = func(response *http.Response) error { + severable = &severableReadWriteCloser{ReadWriteCloser: response.Body.(io.ReadWriteCloser)} + response.Body = severable + return nil + } + frontendProxy := httptest.NewServer(rproxy) + defer frontendProxy.Close() + + wsURL := "ws:" + strings.TrimPrefix(frontendProxy.URL, "http:") + client, err := DialWebsocket(ctx, wsURL, "") + if err != nil { + t.Fatalf("client dial error: %v", err) + } + defer client.Close() + + resultChan := make(chan int) + sub, err := client.EthSubscribe(ctx, resultChan, "foo") + if err != nil { + t.Fatalf("client subscribe error: %v", err) + } + + // sever the connection + severable.Sever() + + // Wait for subscription error. + timeout := time.NewTimer(5 * wsPingInterval) + defer timeout.Stop() + for { + select { + case err := <-sub.Err(): + t.Log("client subscription error:", err) + return + case result := <-resultChan: + t.Error("unexpected result:", result) + return + case <-timeout.C: + t.Error("didn't get any error within the test timeout") + return + } + } +} + +// wsPingTestServer runs a WebSocket server which accepts a single subscription request. +// When a value arrives on sendPing, the server sends a ping frame, waits for a matching +// pong and finally delivers a single subscription result. +func wsPingTestServer(t *testing.T, sendPing <-chan struct{}) *http.Server { + var srv http.Server + shutdown := make(chan struct{}) + srv.RegisterOnShutdown(func() { + close(shutdown) + }) + srv.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + // Upgrade to WebSocket. + upgrader := websocket.Upgrader{ + CheckOrigin: func(r *http.Request) bool { return true }, + } + conn, err := upgrader.Upgrade(w, r, nil) + if err != nil { + t.Errorf("server WS upgrade error: %v", err) + return + } + defer conn.Close() + + // Handle the connection. + wsPingTestHandler(t, conn, shutdown, sendPing) + }) + + // Start the server. + listener, err := net.Listen("tcp", "127.0.0.1:0") + if err != nil { + t.Fatal("can't listen:", err) + } + srv.Addr = listener.Addr().String() + go srv.Serve(listener) + return &srv +} + +func wsPingTestHandler(t *testing.T, conn *websocket.Conn, shutdown, sendPing <-chan struct{}) { + // Canned responses for the eth_subscribe call in TestClientWebsocketPing. + const ( + subResp = `{"jsonrpc":"2.0","id":1,"result":"0x00"}` + subNotify = `{"jsonrpc":"2.0","method":"eth_subscription","params":{"subscription":"0x00","result":1}}` + ) + + // Handle subscribe request. + if _, _, err := conn.ReadMessage(); err != nil { + t.Errorf("server read error: %v", err) + return + } + if err := conn.WriteMessage(websocket.TextMessage, []byte(subResp)); err != nil { + t.Errorf("server write error: %v", err) + return + } + + // Read from the connection to process control messages. + var pongCh = make(chan string) + conn.SetPongHandler(func(d string) error { + t.Logf("server got pong: %q", d) + pongCh <- d + return nil + }) + go func() { + for { + typ, msg, err := conn.ReadMessage() + if err != nil { + return + } + t.Logf("server got message (%d): %q", typ, msg) + } + }() + + // Write messages. + var ( + wantPong string + timer = time.NewTimer(0) + ) + defer timer.Stop() + <-timer.C + for { + select { + case _, open := <-sendPing: + if !open { + sendPing = nil + } + t.Logf("server sending ping") + conn.WriteMessage(websocket.PingMessage, []byte("ping")) + wantPong = "ping" + case data := <-pongCh: + if wantPong == "" { + t.Errorf("unexpected pong") + } else if data != wantPong { + t.Errorf("got pong with wrong data %q", data) + } + wantPong = "" + timer.Reset(200 * time.Millisecond) + case <-timer.C: + t.Logf("server sending response") + conn.WriteMessage(websocket.TextMessage, []byte(subNotify)) + case <-shutdown: + conn.Close() + return + } + } +} + +// severableReadWriteCloser wraps an io.ReadWriteCloser and provides a Sever() method to drop writes and read empty. +type severableReadWriteCloser struct { + io.ReadWriteCloser + severed int32 // atomic +} + +func (s *severableReadWriteCloser) Sever() { + atomic.StoreInt32(&s.severed, 1) +} + +func (s *severableReadWriteCloser) Read(p []byte) (n int, err error) { + if atomic.LoadInt32(&s.severed) > 0 { + return 0, nil + } + return s.ReadWriteCloser.Read(p) +} + +func (s *severableReadWriteCloser) Write(p []byte) (n int, err error) { + if atomic.LoadInt32(&s.severed) > 0 { + return len(p), nil + } + return s.ReadWriteCloser.Write(p) +} + +func (s *severableReadWriteCloser) Close() error { + return s.ReadWriteCloser.Close() +} diff --git a/scripts/build.sh b/scripts/build.sh new file mode 100755 index 0000000000..db1eca96dd --- /dev/null +++ b/scripts/build.sh @@ -0,0 +1,30 @@ +#!/usr/bin/env bash + +set -o errexit +set -o nounset +set -o pipefail + +# Avalanche root directory +SUBNET_EVM_PATH=$( cd "$( dirname "${BASH_SOURCE[0]}" )"; cd .. && pwd ) + +# Load the versions +source "$SUBNET_EVM_PATH"/scripts/versions.sh + +# Load the constants +source "$SUBNET_EVM_PATH"/scripts/constants.sh + +if [[ $# -eq 1 ]]; then + binary_path=$1 +elif [[ $# -ne 0 ]]; then + echo "Invalid arguments to build subnet_evm. Requires either no arguments (default) or one arguments to specify binary location." + exit 1 +fi + +# Check if SUBNET_EVM_COMMIT is set, if not retrieve the last commit from the repo. +# This is used in the Dockerfile to allow a commit hash to be passed in without +# including the .git/ directory within the Docker image. +subnet_evm_commit=${SUBNET_EVM_COMMIT:-$( git rev-list -1 HEAD )} + +# Build Subnet EVM, which is run as a subprocess +echo "Building Subnet EVM Version: $subnet_evm_version; GitCommit: $subnet_evm_commit" +go build -ldflags "-X github.com/ava-labs/subnet_evm/plugin/evm.GitCommit=$subnet_evm_commit -X github.com/ava-labs/subnet_evm/plugin/evm.Version=$subnet_evm_version" -o "$binary_path" "plugin/"*.go diff --git a/scripts/build_image.sh b/scripts/build_image.sh new file mode 100755 index 0000000000..06e2705b38 --- /dev/null +++ b/scripts/build_image.sh @@ -0,0 +1,20 @@ +#!/usr/bin/env bash + +set -o errexit +set -o nounset +set -o pipefail + +# Avalanche root directory +SUBNET_EVM_PATH=$( cd "$( dirname "${BASH_SOURCE[0]}" )"; cd .. && pwd ) + +# Load the versions +source "$SUBNET_EVM_PATH"/scripts/versions.sh + +# Load the constants +source "$SUBNET_EVM_PATH"/scripts/constants.sh + +echo "Building Docker Image: $dockerhub_repo:$build_image_id based of $avalanche_version" +docker build -t "$dockerhub_repo:$build_image_id" "$SUBNET_EVM_PATH" -f "$SUBNET_EVM_PATH/Dockerfile" \ + --build-arg AVALANCHE_VERSION="$avalanche_version" \ + --build-arg SUBNET_EVM_COMMIT="$subnet_evm_commit" \ + --build-arg CURRENT_BRANCH="$current_branch" diff --git a/scripts/build_test.sh b/scripts/build_test.sh new file mode 100755 index 0000000000..84cfe3027c --- /dev/null +++ b/scripts/build_test.sh @@ -0,0 +1,9 @@ +#!/usr/bin/env bash + +set -o errexit +set -o nounset +set -o pipefail + +export GOGC=25 + +go test -race -timeout="25m" -coverprofile="coverage.out" -covermode="atomic" ./... diff --git a/scripts/constants.sh b/scripts/constants.sh new file mode 100644 index 0000000000..6389ce7eb2 --- /dev/null +++ b/scripts/constants.sh @@ -0,0 +1,25 @@ +#!/usr/bin/env bash + +# Set the PATHS +GOPATH="$(go env GOPATH)" + +VMID="spePNvBxaWSYL2tB5e2xMmMNBQkXMN8z2XEbz1ML2Aahatwoc" + +# Set binary location +binary_path=${SUBNET_EVM_BINARY_PATH:-"$GOPATH/src/github.com/ava-labs/avalanchego/build/plugins/$VMID"} + +# Avalabs docker hub +dockerhub_repo="avaplatform/avalanchego" + +# Current branch +current_branch=${CURRENT_BRANCH:-$(git describe --tags --exact-match 2> /dev/null || git symbolic-ref -q --short HEAD || git rev-parse --short HEAD)} +echo "Using branch: ${current_branch}" + +# Image build id +# Use an abbreviated version of the full commit to tag the image. + +# WARNING: this will use the most recent commit even if there are un-committed changes present +subnet_evm_commit="$(git --git-dir="$SUBNET_EVM_PATH/.git" rev-parse HEAD)" +subnet_evm_commit_id="${subnet_evm_commit::8}" + +build_image_id=${BUILD_IMAGE_ID:-"$avalanche_version-$subnet_evm_commit_id"} diff --git a/scripts/versions.sh b/scripts/versions.sh new file mode 100644 index 0000000000..b4fbe9ee86 --- /dev/null +++ b/scripts/versions.sh @@ -0,0 +1,6 @@ +#!/usr/bin/env bash + +# Set up the versions to be used +subnet_evm_version=${SUBNET_EVM_VERSION:-'v0.1.0'} +# Don't export them as they're used in the context of other calls +avalanche_version=${AVALANCHE_VERSION:-'v1.6.6-rc.0'} diff --git a/signer/core/apitypes/types.go b/signer/core/apitypes/types.go new file mode 100644 index 0000000000..544d93fabd --- /dev/null +++ b/signer/core/apitypes/types.go @@ -0,0 +1,169 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package apitypes + +import ( + "encoding/json" + "fmt" + "math/big" + "strings" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +type ValidationInfo struct { + Typ string `json:"type"` + Message string `json:"message"` +} + +type ValidationMessages struct { + Messages []ValidationInfo +} + +const ( + WARN = "WARNING" + CRIT = "CRITICAL" + INFO = "Info" +) + +func (vs *ValidationMessages) Crit(msg string) { + vs.Messages = append(vs.Messages, ValidationInfo{CRIT, msg}) +} + +func (vs *ValidationMessages) Warn(msg string) { + vs.Messages = append(vs.Messages, ValidationInfo{WARN, msg}) +} + +func (vs *ValidationMessages) Info(msg string) { + vs.Messages = append(vs.Messages, ValidationInfo{INFO, msg}) +} + +/// getWarnings returns an error with all messages of type WARN of above, or nil if no warnings were present +func (v *ValidationMessages) GetWarnings() error { + var messages []string + for _, msg := range v.Messages { + if msg.Typ == WARN || msg.Typ == CRIT { + messages = append(messages, msg.Message) + } + } + if len(messages) > 0 { + return fmt.Errorf("validation failed: %s", strings.Join(messages, ",")) + } + return nil +} + +// SendTxArgs represents the arguments to submit a transaction +// This struct is identical to ethapi.TransactionArgs, except for the usage of +// common.MixedcaseAddress in From and To +type SendTxArgs struct { + From common.MixedcaseAddress `json:"from"` + To *common.MixedcaseAddress `json:"to"` + Gas hexutil.Uint64 `json:"gas"` + GasPrice *hexutil.Big `json:"gasPrice"` + MaxFeePerGas *hexutil.Big `json:"maxFeePerGas"` + MaxPriorityFeePerGas *hexutil.Big `json:"maxPriorityFeePerGas"` + Value hexutil.Big `json:"value"` + Nonce hexutil.Uint64 `json:"nonce"` + + // We accept "data" and "input" for backwards-compatibility reasons. + // "input" is the newer name and should be preferred by clients. + // Issue detail: https://github.com/ethereum/go-ethereum/issues/15628 + Data *hexutil.Bytes `json:"data"` + Input *hexutil.Bytes `json:"input,omitempty"` + + // For non-legacy transactions + AccessList *types.AccessList `json:"accessList,omitempty"` + ChainID *hexutil.Big `json:"chainId,omitempty"` +} + +func (args SendTxArgs) String() string { + s, err := json.Marshal(args) + if err == nil { + return string(s) + } + return err.Error() +} + +// ToTransaction converts the arguments to a transaction. +func (args *SendTxArgs) ToTransaction() *types.Transaction { + // Add the To-field, if specified + var to *common.Address + if args.To != nil { + dstAddr := args.To.Address() + to = &dstAddr + } + + var input []byte + if args.Input != nil { + input = *args.Input + } else if args.Data != nil { + input = *args.Data + } + + var data types.TxData + switch { + case args.MaxFeePerGas != nil: + al := types.AccessList{} + if args.AccessList != nil { + al = *args.AccessList + } + data = &types.DynamicFeeTx{ + To: to, + ChainID: (*big.Int)(args.ChainID), + Nonce: uint64(args.Nonce), + Gas: uint64(args.Gas), + GasFeeCap: (*big.Int)(args.MaxFeePerGas), + GasTipCap: (*big.Int)(args.MaxPriorityFeePerGas), + Value: (*big.Int)(&args.Value), + Data: input, + AccessList: al, + } + case args.AccessList != nil: + data = &types.AccessListTx{ + To: to, + ChainID: (*big.Int)(args.ChainID), + Nonce: uint64(args.Nonce), + Gas: uint64(args.Gas), + GasPrice: (*big.Int)(args.GasPrice), + Value: (*big.Int)(&args.Value), + Data: input, + AccessList: *args.AccessList, + } + default: + data = &types.LegacyTx{ + To: to, + Nonce: uint64(args.Nonce), + Gas: uint64(args.Gas), + GasPrice: (*big.Int)(args.GasPrice), + Value: (*big.Int)(&args.Value), + Data: input, + } + } + return types.NewTx(data) +} diff --git a/tests/init.go b/tests/init.go new file mode 100644 index 0000000000..890a010c25 --- /dev/null +++ b/tests/init.go @@ -0,0 +1,175 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tests + +import ( + "fmt" + "math/big" + "sort" + + "github.com/ava-labs/subnet-evm/params" +) + +// Forks table defines supported forks and their chain config. +var Forks = map[string]*params.ChainConfig{ + "Frontier": { + ChainID: big.NewInt(1), + }, + "Homestead": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + }, + "EIP150": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + }, + "EIP158": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + }, + "Byzantium": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + }, + "Constantinople": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(10000000), + }, + "ConstantinopleFix": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(0), + }, + "Istanbul": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(0), + IstanbulBlock: big.NewInt(0), + }, + "FrontierToHomesteadAt5": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(5), + }, + "HomesteadToEIP150At5": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(5), + }, + "EIP158ToByzantiumAt5": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(5), + }, + "ByzantiumToConstantinopleAt5": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(5), + }, + "ByzantiumToConstantinopleFixAt5": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(5), + PetersburgBlock: big.NewInt(5), + }, + "ConstantinopleFixToIstanbulAt5": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(0), + IstanbulBlock: big.NewInt(5), + }, + "SubnetEVM": { + ChainID: big.NewInt(1), + HomesteadBlock: big.NewInt(0), + EIP150Block: big.NewInt(0), + EIP155Block: big.NewInt(0), + EIP158Block: big.NewInt(0), + ByzantiumBlock: big.NewInt(0), + ConstantinopleBlock: big.NewInt(0), + PetersburgBlock: big.NewInt(0), + IstanbulBlock: big.NewInt(0), + SubnetEVMTimestamp: big.NewInt(0), + }, +} + +// Returns the set of defined fork names +func AvailableForks() []string { + var availableForks []string + for k := range Forks { + availableForks = append(availableForks, k) + } + sort.Strings(availableForks) + return availableForks +} + +// UnsupportedForkError is returned when a test requests a fork that isn't implemented. +type UnsupportedForkError struct { + Name string +} + +func (e UnsupportedForkError) Error() string { + return fmt.Sprintf("unsupported fork %q", e.Name) +} diff --git a/tests/init_test.go b/tests/init_test.go new file mode 100644 index 0000000000..b6ef31f118 --- /dev/null +++ b/tests/init_test.go @@ -0,0 +1,287 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tests + +import ( + "encoding/json" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "reflect" + "regexp" + "runtime" + "sort" + "strings" + "testing" + + "github.com/ava-labs/subnet-evm/params" +) + +func readJSON(reader io.Reader, value interface{}) error { + data, err := ioutil.ReadAll(reader) + if err != nil { + return fmt.Errorf("error reading JSON file: %v", err) + } + if err = json.Unmarshal(data, &value); err != nil { + if syntaxerr, ok := err.(*json.SyntaxError); ok { + line := findLine(data, syntaxerr.Offset) + return fmt.Errorf("JSON syntax error at line %v: %v", line, err) + } + return err + } + return nil +} + +func readJSONFile(fn string, value interface{}) error { + file, err := os.Open(fn) + if err != nil { + return err + } + defer file.Close() + + err = readJSON(file, value) + if err != nil { + return fmt.Errorf("%s in file %s", err.Error(), fn) + } + return nil +} + +// findLine returns the line number for the given offset into data. +func findLine(data []byte, offset int64) (line int) { + line = 1 + for i, r := range string(data) { + if int64(i) >= offset { + return + } + if r == '\n' { + line++ + } + } + return +} + +// testMatcher controls skipping and chain config assignment to tests. +type testMatcher struct { + configpat []testConfig + failpat []testFailure + skiploadpat []*regexp.Regexp + slowpat []*regexp.Regexp + runonlylistpat *regexp.Regexp +} + +type testConfig struct { + p *regexp.Regexp + config params.ChainConfig +} + +type testFailure struct { + p *regexp.Regexp + reason string +} + +// skipShortMode skips tests matching when the -short flag is used. +func (tm *testMatcher) slow(pattern string) { + tm.slowpat = append(tm.slowpat, regexp.MustCompile(pattern)) +} + +// skipLoad skips JSON loading of tests matching the pattern. +func (tm *testMatcher) skipLoad(pattern string) { + tm.skiploadpat = append(tm.skiploadpat, regexp.MustCompile(pattern)) +} + +// fails adds an expected failure for tests matching the pattern. +func (tm *testMatcher) fails(pattern string, reason string) { + if reason == "" { + panic("empty fail reason") + } + tm.failpat = append(tm.failpat, testFailure{regexp.MustCompile(pattern), reason}) +} + +func (tm *testMatcher) runonly(pattern string) { + tm.runonlylistpat = regexp.MustCompile(pattern) +} + +// config defines chain config for tests matching the pattern. +func (tm *testMatcher) config(pattern string, cfg params.ChainConfig) { + tm.configpat = append(tm.configpat, testConfig{regexp.MustCompile(pattern), cfg}) +} + +// findSkip matches name against test skip patterns. +func (tm *testMatcher) findSkip(name string) (reason string, skipload bool) { + isWin32 := runtime.GOARCH == "386" && runtime.GOOS == "windows" + for _, re := range tm.slowpat { + if re.MatchString(name) { + if testing.Short() { + return "skipped in -short mode", false + } + if isWin32 { + return "skipped on 32bit windows", false + } + } + } + for _, re := range tm.skiploadpat { + if re.MatchString(name) { + return "skipped by skipLoad", true + } + } + return "", false +} + +// findConfig returns the chain config matching defined patterns. +func (tm *testMatcher) findConfig(t *testing.T) *params.ChainConfig { + for _, m := range tm.configpat { + if m.p.MatchString(t.Name()) { + return &m.config + } + } + return new(params.ChainConfig) +} + +// checkFailure checks whether a failure is expected. +func (tm *testMatcher) checkFailure(t *testing.T, name string, err error) error { + failReason := "" + for _, m := range tm.failpat { + if m.p.MatchString(name) { + failReason = m.reason + break + } + } + if failReason != "" { + t.Logf("expected failure: %s", failReason) + if err != nil { + t.Logf("error: %v", err) + return nil + } + return fmt.Errorf("test succeeded unexpectedly") + } + return err +} + +// walk invokes its runTest argument for all subtests in the given directory. +// +// runTest should be a function of type func(t *testing.T, name string, x ), +// where TestType is the type of the test contained in test files. +func (tm *testMatcher) walk(t *testing.T, dir string, runTest interface{}) { + // Walk the directory. + dirinfo, err := os.Stat(dir) + if os.IsNotExist(err) || !dirinfo.IsDir() { + fmt.Fprintf(os.Stderr, "can't find test files in %s, did you clone the tests submodule?\n", dir) + t.Skip("missing test files") + } + err = filepath.Walk(dir, func(path string, info os.FileInfo, err error) error { + name := filepath.ToSlash(strings.TrimPrefix(path, dir+string(filepath.Separator))) + if info.IsDir() { + if _, skipload := tm.findSkip(name + "/"); skipload { + return filepath.SkipDir + } + return nil + } + if filepath.Ext(path) == ".json" { + t.Run(name, func(t *testing.T) { tm.runTestFile(t, path, name, runTest) }) + } + return nil + }) + if err != nil { + t.Fatal(err) + } +} + +func (tm *testMatcher) runTestFile(t *testing.T, path, name string, runTest interface{}) { + if r, _ := tm.findSkip(name); r != "" { + t.Skip(r) + } + if tm.runonlylistpat != nil { + if !tm.runonlylistpat.MatchString(name) { + t.Skip("Skipped by runonly") + } + } + t.Parallel() + + // Load the file as map[string]. + m := makeMapFromTestFunc(runTest) + if err := readJSONFile(path, m.Addr().Interface()); err != nil { + t.Fatal(err) + } + + // Run all tests from the map. Don't wrap in a subtest if there is only one test in the file. + keys := sortedMapKeys(m) + if len(keys) == 1 { + runTestFunc(runTest, t, name, m, keys[0]) + } else { + for _, key := range keys { + name := name + "/" + key + t.Run(key, func(t *testing.T) { + if r, _ := tm.findSkip(name); r != "" { + t.Skip(r) + } + runTestFunc(runTest, t, name, m, key) + }) + } + } +} + +func makeMapFromTestFunc(f interface{}) reflect.Value { + stringT := reflect.TypeOf("") + testingT := reflect.TypeOf((*testing.T)(nil)) + ftyp := reflect.TypeOf(f) + if ftyp.Kind() != reflect.Func || ftyp.NumIn() != 3 || ftyp.NumOut() != 0 || ftyp.In(0) != testingT || ftyp.In(1) != stringT { + panic(fmt.Sprintf("bad test function type: want func(*testing.T, string, ), have %s", ftyp)) + } + testType := ftyp.In(2) + mp := reflect.New(reflect.MapOf(stringT, testType)) + return mp.Elem() +} + +func sortedMapKeys(m reflect.Value) []string { + keys := make([]string, m.Len()) + for i, k := range m.MapKeys() { + keys[i] = k.String() + } + sort.Strings(keys) + return keys +} + +func runTestFunc(runTest interface{}, t *testing.T, name string, m reflect.Value, key string) { + reflect.ValueOf(runTest).Call([]reflect.Value{ + reflect.ValueOf(t), + reflect.ValueOf(name), + m.MapIndex(reflect.ValueOf(key)), + }) +} + +// func TestMatcherRunonlylist(t *testing.T) { +// t.Parallel() +// tm := new(testMatcher) +// tm.runonly("invalid*") +// tm.walk(t, rlpTestDir, func(t *testing.T, name string, test *RLPTest) { +// if name[:len("invalidRLPTest.json")] != "invalidRLPTest.json" { +// t.Fatalf("invalid test found: %s != invalidRLPTest.json", name) +// } +// }) +// } diff --git a/tests/rlp_test_util.go b/tests/rlp_test_util.go new file mode 100644 index 0000000000..686264cd45 --- /dev/null +++ b/tests/rlp_test_util.go @@ -0,0 +1,182 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tests + +import ( + "bytes" + "encoding/hex" + "errors" + "fmt" + "math/big" + "strings" + + "github.com/ethereum/go-ethereum/rlp" +) + +// RLPTest is the JSON structure of a single RLP test. +type RLPTest struct { + // If the value of In is "INVALID" or "VALID", the test + // checks whether Out can be decoded into a value of + // type interface{}. + // + // For other JSON values, In is treated as a driver for + // calls to rlp.Stream. The test also verifies that encoding + // In produces the bytes in Out. + In interface{} + + // Out is a hex-encoded RLP value. + Out string +} + +// FromHex returns the bytes represented by the hexadecimal string s. +// s may be prefixed with "0x". +// This is copy-pasted from bytes.go, which does not return the error +func FromHex(s string) ([]byte, error) { + if len(s) > 1 && (s[0:2] == "0x" || s[0:2] == "0X") { + s = s[2:] + } + if len(s)%2 == 1 { + s = "0" + s + } + return hex.DecodeString(s) +} + +// Run executes the test. +func (t *RLPTest) Run() error { + outb, err := FromHex(t.Out) + if err != nil { + return fmt.Errorf("invalid hex in Out") + } + + // Handle simple decoding tests with no actual In value. + if t.In == "VALID" || t.In == "INVALID" { + return checkDecodeInterface(outb, t.In == "VALID") + } + + // Check whether encoding the value produces the same bytes. + in := translateJSON(t.In) + b, err := rlp.EncodeToBytes(in) + if err != nil { + return fmt.Errorf("encode failed: %v", err) + } + if !bytes.Equal(b, outb) { + return fmt.Errorf("encode produced %x, want %x", b, outb) + } + // Test stream decoding. + s := rlp.NewStream(bytes.NewReader(outb), 0) + return checkDecodeFromJSON(s, in) +} + +func checkDecodeInterface(b []byte, isValid bool) error { + err := rlp.DecodeBytes(b, new(interface{})) + switch { + case isValid && err != nil: + return fmt.Errorf("decoding failed: %v", err) + case !isValid && err == nil: + return fmt.Errorf("decoding of invalid value succeeded") + } + return nil +} + +// translateJSON makes test json values encodable with RLP. +func translateJSON(v interface{}) interface{} { + switch v := v.(type) { + case float64: + return uint64(v) + case string: + if len(v) > 0 && v[0] == '#' { // # starts a faux big int. + big, ok := new(big.Int).SetString(v[1:], 10) + if !ok { + panic(fmt.Errorf("bad test: bad big int: %q", v)) + } + return big + } + return []byte(v) + case []interface{}: + new := make([]interface{}, len(v)) + for i := range v { + new[i] = translateJSON(v[i]) + } + return new + default: + panic(fmt.Errorf("can't handle %T", v)) + } +} + +// checkDecodeFromJSON decodes from s guided by exp. exp drives the +// Stream by invoking decoding operations (Uint, Big, List, ...) based +// on the type of each value. The value decoded from the RLP stream +// must match the JSON value. +func checkDecodeFromJSON(s *rlp.Stream, exp interface{}) error { + switch exp := exp.(type) { + case uint64: + i, err := s.Uint() + if err != nil { + return addStack("Uint", exp, err) + } + if i != exp { + return addStack("Uint", exp, fmt.Errorf("result mismatch: got %d", i)) + } + case *big.Int: + big := new(big.Int) + if err := s.Decode(&big); err != nil { + return addStack("Big", exp, err) + } + if big.Cmp(exp) != 0 { + return addStack("Big", exp, fmt.Errorf("result mismatch: got %d", big)) + } + case []byte: + b, err := s.Bytes() + if err != nil { + return addStack("Bytes", exp, err) + } + if !bytes.Equal(b, exp) { + return addStack("Bytes", exp, fmt.Errorf("result mismatch: got %x", b)) + } + case []interface{}: + if _, err := s.List(); err != nil { + return addStack("List", exp, err) + } + for i, v := range exp { + if err := checkDecodeFromJSON(s, v); err != nil { + return addStack(fmt.Sprintf("[%d]", i), exp, err) + } + } + if err := s.ListEnd(); err != nil { + return addStack("ListEnd", exp, err) + } + default: + panic(fmt.Errorf("unhandled type: %T", exp)) + } + return nil +} + +func addStack(op string, val interface{}, err error) error { + lines := strings.Split(err.Error(), "\n") + lines = append(lines, fmt.Sprintf("\t%s: %v", op, val)) + return errors.New(strings.Join(lines, "\n")) +} diff --git a/tests/state_test_util.go b/tests/state_test_util.go new file mode 100644 index 0000000000..f06ce4d74d --- /dev/null +++ b/tests/state_test_util.go @@ -0,0 +1,258 @@ +// (c) 2019-2020, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package tests + +import ( + "encoding/hex" + "encoding/json" + "fmt" + "math/big" + "strconv" + "strings" + + "github.com/ava-labs/subnet-evm/core" + "github.com/ava-labs/subnet-evm/core/state" + "github.com/ava-labs/subnet-evm/core/state/snapshot" + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ava-labs/subnet-evm/core/vm" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/params" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" +) + +// StateTest checks transaction processing without block context. +// See https://github.com/ethereum/EIPs/issues/176 for the test format specification. +type StateTest struct { + json stJSON +} + +// StateSubtest selects a specific configuration of a General State Test. +type StateSubtest struct { + Fork string + Index int +} + +func (t *StateTest) UnmarshalJSON(in []byte) error { + return json.Unmarshal(in, &t.json) +} + +type stJSON struct { + Env stEnv `json:"env"` + Pre core.GenesisAlloc `json:"pre"` + Tx stTransaction `json:"transaction"` + Out hexutil.Bytes `json:"out"` + Post map[string][]stPostState `json:"post"` +} + +type stPostState struct { + Root common.UnprefixedHash `json:"hash"` + Logs common.UnprefixedHash `json:"logs"` + TxBytes hexutil.Bytes `json:"txbytes"` + ExpectException string `json:"expectException"` + Indexes struct { + Data int `json:"data"` + Gas int `json:"gas"` + Value int `json:"value"` + } +} + +//go:generate gencodec -type stEnv -field-override stEnvMarshaling -out gen_stenv.go + +type stEnv struct { + Coinbase common.Address `json:"currentCoinbase" gencodec:"required"` + Difficulty *big.Int `json:"currentDifficulty" gencodec:"required"` + GasLimit uint64 `json:"currentGasLimit" gencodec:"required"` + Number uint64 `json:"currentNumber" gencodec:"required"` + Timestamp uint64 `json:"currentTimestamp" gencodec:"required"` + BaseFee *big.Int `json:"currentBaseFee" gencodec:"optional"` +} + +//go:generate gencodec -type stTransaction -field-override stTransactionMarshaling -out gen_sttransaction.go + +type stTransaction struct { + GasPrice *big.Int `json:"gasPrice"` + MaxFeePerGas *big.Int `json:"maxFeePerGas"` + MaxPriorityFeePerGas *big.Int `json:"maxPriorityFeePerGas"` + Nonce uint64 `json:"nonce"` + To string `json:"to"` + Data []string `json:"data"` + AccessLists []*types.AccessList `json:"accessLists,omitempty"` + GasLimit []uint64 `json:"gasLimit"` + Value []string `json:"value"` + PrivateKey []byte `json:"secretKey"` +} + +// GetChainConfig takes a fork definition and returns a chain config. +// The fork definition can be +// - a plain forkname, e.g. `Byzantium`, +// - a fork basename, and a list of EIPs to enable; e.g. `Byzantium+1884+1283`. +func GetChainConfig(forkString string) (baseConfig *params.ChainConfig, eips []int, err error) { + var ( + splitForks = strings.Split(forkString, "+") + ok bool + baseName, eipsStrings = splitForks[0], splitForks[1:] + ) + if baseConfig, ok = Forks[baseName]; !ok { + return nil, nil, UnsupportedForkError{baseName} + } + for _, eip := range eipsStrings { + if eipNum, err := strconv.Atoi(eip); err != nil { + return nil, nil, fmt.Errorf("syntax error, invalid eip number %v", eipNum) + } else { + if !vm.ValidEip(eipNum) { + return nil, nil, fmt.Errorf("syntax error, invalid eip number %v", eipNum) + } + eips = append(eips, eipNum) + } + } + return baseConfig, eips, nil +} + +// Subtests returns all valid subtests of the test. +func (t *StateTest) Subtests() []StateSubtest { + var sub []StateSubtest + for fork, pss := range t.json.Post { + for i := range pss { + sub = append(sub, StateSubtest{fork, i}) + } + } + return sub +} + +func (t *StateTest) gasLimit(subtest StateSubtest) uint64 { + return t.json.Tx.GasLimit[t.json.Post[subtest.Fork][subtest.Index].Indexes.Gas] +} + +func MakePreState(db ethdb.Database, accounts core.GenesisAlloc, snapshotter bool) (*snapshot.Tree, *state.StateDB) { + sdb := state.NewDatabase(db) + statedb, _ := state.New(common.Hash{}, sdb, nil) + for addr, a := range accounts { + statedb.SetCode(addr, a.Code) + statedb.SetNonce(addr, a.Nonce) + statedb.SetBalance(addr, a.Balance) + for k, v := range a.Storage { + statedb.SetState(addr, k, v) + } + } + // Commit and re-open to start with a clean state. + root, _ := statedb.Commit(false) + + var snaps *snapshot.Tree + if snapshotter { + snaps, _ = snapshot.New(db, sdb.TrieDB(), 1, common.Hash{}, root, false, true, false) + } + statedb, _ = state.New(root, sdb, snaps) + return snaps, statedb +} + +func (t *StateTest) genesis(config *params.ChainConfig) *core.Genesis { + return &core.Genesis{ + Config: config, + Coinbase: t.json.Env.Coinbase, + Difficulty: t.json.Env.Difficulty, + GasLimit: t.json.Env.GasLimit, + Number: t.json.Env.Number, + Timestamp: t.json.Env.Timestamp, + Alloc: t.json.Pre, + } +} + +func (tx *stTransaction) toMessage(ps stPostState, baseFee *big.Int) (core.Message, error) { + // Derive sender from private key if present. + var from common.Address + if len(tx.PrivateKey) > 0 { + key, err := crypto.ToECDSA(tx.PrivateKey) + if err != nil { + return nil, fmt.Errorf("invalid private key: %v", err) + } + from = crypto.PubkeyToAddress(key.PublicKey) + } + // Parse recipient if present. + var to *common.Address + if tx.To != "" { + to = new(common.Address) + if err := to.UnmarshalText([]byte(tx.To)); err != nil { + return nil, fmt.Errorf("invalid to address: %v", err) + } + } + + // Get values specific to this post state. + if ps.Indexes.Data > len(tx.Data) { + return nil, fmt.Errorf("tx data index %d out of bounds", ps.Indexes.Data) + } + if ps.Indexes.Value > len(tx.Value) { + return nil, fmt.Errorf("tx value index %d out of bounds", ps.Indexes.Value) + } + if ps.Indexes.Gas > len(tx.GasLimit) { + return nil, fmt.Errorf("tx gas limit index %d out of bounds", ps.Indexes.Gas) + } + dataHex := tx.Data[ps.Indexes.Data] + valueHex := tx.Value[ps.Indexes.Value] + gasLimit := tx.GasLimit[ps.Indexes.Gas] + // Value, Data hex encoding is messy: https://github.com/ethereum/tests/issues/203 + value := new(big.Int) + if valueHex != "0x" { + v, ok := math.ParseBig256(valueHex) + if !ok { + return nil, fmt.Errorf("invalid tx value %q", valueHex) + } + value = v + } + data, err := hex.DecodeString(strings.TrimPrefix(dataHex, "0x")) + if err != nil { + return nil, fmt.Errorf("invalid tx data %q", dataHex) + } + var accessList types.AccessList + if tx.AccessLists != nil && tx.AccessLists[ps.Indexes.Data] != nil { + accessList = *tx.AccessLists[ps.Indexes.Data] + } + // If baseFee provided, set gasPrice to effectiveGasPrice. + gasPrice := tx.GasPrice + if baseFee != nil { + if tx.MaxFeePerGas == nil { + tx.MaxFeePerGas = gasPrice + } + if tx.MaxFeePerGas == nil { + tx.MaxFeePerGas = new(big.Int) + } + if tx.MaxPriorityFeePerGas == nil { + tx.MaxPriorityFeePerGas = tx.MaxFeePerGas + } + gasPrice = math.BigMin(new(big.Int).Add(tx.MaxPriorityFeePerGas, baseFee), + tx.MaxFeePerGas) + } + if gasPrice == nil { + return nil, fmt.Errorf("no gas price provided") + } + + msg := types.NewMessage(from, to, tx.Nonce, value, gasLimit, gasPrice, + tx.MaxFeePerGas, tx.MaxPriorityFeePerGas, data, accessList, false) + return msg, nil +} diff --git a/trie/committer.go b/trie/committer.go new file mode 100644 index 0000000000..8d1610d942 --- /dev/null +++ b/trie/committer.go @@ -0,0 +1,286 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "errors" + "fmt" + "sync" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "golang.org/x/crypto/sha3" +) + +// leafChanSize is the size of the leafCh. It's a pretty arbitrary number, to allow +// some parallelism but not incur too much memory overhead. +const leafChanSize = 200 + +// leaf represents a trie leaf value +type leaf struct { + size int // size of the rlp data (estimate) + hash common.Hash // hash of rlp data + node node // the node to commit +} + +// committer is a type used for the trie Commit operation. A committer has some +// internal preallocated temp space, and also a callback that is invoked when +// leaves are committed. The leafs are passed through the `leafCh`, to allow +// some level of parallelism. +// By 'some level' of parallelism, it's still the case that all leaves will be +// processed sequentially - onleaf will never be called in parallel or out of order. +type committer struct { + tmp sliceBuffer + sha crypto.KeccakState + + onleaf LeafCallback + leafCh chan *leaf +} + +// committers live in a global sync.Pool +var committerPool = sync.Pool{ + New: func() interface{} { + return &committer{ + tmp: make(sliceBuffer, 0, 550), // cap is as large as a full fullNode. + sha: sha3.NewLegacyKeccak256().(crypto.KeccakState), + } + }, +} + +// newCommitter creates a new committer or picks one from the pool. +func newCommitter() *committer { + return committerPool.Get().(*committer) +} + +func returnCommitterToPool(h *committer) { + h.onleaf = nil + h.leafCh = nil + committerPool.Put(h) +} + +// Commit collapses a node down into a hash node and inserts it into the database +func (c *committer) Commit(n node, db *Database) (hashNode, int, error) { + if db == nil { + return nil, 0, errors.New("no db provided") + } + h, committed, err := c.commit(n, db) + if err != nil { + return nil, 0, err + } + return h.(hashNode), committed, nil +} + +// commit collapses a node down into a hash node and inserts it into the database +func (c *committer) commit(n node, db *Database) (node, int, error) { + // if this path is clean, use available cached data + hash, dirty := n.cache() + if hash != nil && !dirty { + return hash, 0, nil + } + // Commit children, then parent, and remove remove the dirty flag. + switch cn := n.(type) { + case *shortNode: + // Commit child + collapsed := cn.copy() + + // If the child is fullNode, recursively commit, + // otherwise it can only be hashNode or valueNode. + var childCommitted int + if _, ok := cn.Val.(*fullNode); ok { + childV, committed, err := c.commit(cn.Val, db) + if err != nil { + return nil, 0, err + } + collapsed.Val, childCommitted = childV, committed + } + // The key needs to be copied, since we're delivering it to database + collapsed.Key = hexToCompact(cn.Key) + hashedNode := c.store(collapsed, db) + if hn, ok := hashedNode.(hashNode); ok { + return hn, childCommitted + 1, nil + } + return collapsed, childCommitted, nil + case *fullNode: + hashedKids, childCommitted, err := c.commitChildren(cn, db) + if err != nil { + return nil, 0, err + } + collapsed := cn.copy() + collapsed.Children = hashedKids + + hashedNode := c.store(collapsed, db) + if hn, ok := hashedNode.(hashNode); ok { + return hn, childCommitted + 1, nil + } + return collapsed, childCommitted, nil + case hashNode: + return cn, 0, nil + default: + // nil, valuenode shouldn't be committed + panic(fmt.Sprintf("%T: invalid node: %v", n, n)) + } +} + +// commitChildren commits the children of the given fullnode +func (c *committer) commitChildren(n *fullNode, db *Database) ([17]node, int, error) { + var ( + committed int + children [17]node + ) + for i := 0; i < 16; i++ { + child := n.Children[i] + if child == nil { + continue + } + // If it's the hashed child, save the hash value directly. + // Note: it's impossible that the child in range [0, 15] + // is a valueNode. + if hn, ok := child.(hashNode); ok { + children[i] = hn + continue + } + // Commit the child recursively and store the "hashed" value. + // Note the returned node can be some embedded nodes, so it's + // possible the type is not hashNode. + hashed, childCommitted, err := c.commit(child, db) + if err != nil { + return children, 0, err + } + children[i] = hashed + committed += childCommitted + } + // For the 17th child, it's possible the type is valuenode. + if n.Children[16] != nil { + children[16] = n.Children[16] + } + return children, committed, nil +} + +// store hashes the node n and if we have a storage layer specified, it writes +// the key/value pair to it and tracks any node->child references as well as any +// node->external trie references. +func (c *committer) store(n node, db *Database) node { + // Larger nodes are replaced by their hash and stored in the database. + var ( + hash, _ = n.cache() + size int + ) + if hash == nil { + // This was not generated - must be a small node stored in the parent. + // In theory, we should apply the leafCall here if it's not nil(embedded + // node usually contains value). But small value(less than 32bytes) is + // not our target. + return n + } else { + // We have the hash already, estimate the RLP encoding-size of the node. + // The size is used for mem tracking, does not need to be exact + size = estimateSize(n) + } + // If we're using channel-based leaf-reporting, send to channel. + // The leaf channel will be active only when there an active leaf-callback + if c.leafCh != nil { + c.leafCh <- &leaf{ + size: size, + hash: common.BytesToHash(hash), + node: n, + } + } else if db != nil { + // No leaf-callback used, but there's still a database. Do serial + // insertion + db.lock.Lock() + db.insert(common.BytesToHash(hash), size, n) + db.lock.Unlock() + } + return hash +} + +// commitLoop does the actual insert + leaf callback for nodes. +func (c *committer) commitLoop(db *Database) { + for item := range c.leafCh { + var ( + hash = item.hash + size = item.size + n = item.node + ) + // We are pooling the trie nodes into an intermediate memory cache + db.lock.Lock() + db.insert(hash, size, n) + db.lock.Unlock() + + if c.onleaf != nil { + switch n := n.(type) { + case *shortNode: + if child, ok := n.Val.(valueNode); ok { + c.onleaf(nil, nil, child, hash) + } + case *fullNode: + // For children in range [0, 15], it's impossible + // to contain valueNode. Only check the 17th child. + if n.Children[16] != nil { + c.onleaf(nil, nil, n.Children[16].(valueNode), hash) + } + } + } + } +} + +func (c *committer) makeHashNode(data []byte) hashNode { + n := make(hashNode, c.sha.Size()) + c.sha.Reset() + c.sha.Write(data) + c.sha.Read(n) + return n +} + +// estimateSize estimates the size of an rlp-encoded node, without actually +// rlp-encoding it (zero allocs). This method has been experimentally tried, and with a trie +// with 1000 leafs, the only errors above 1% are on small shortnodes, where this +// method overestimates by 2 or 3 bytes (e.g. 37 instead of 35) +func estimateSize(n node) int { + switch n := n.(type) { + case *shortNode: + // A short node contains a compacted key, and a value. + return 3 + len(n.Key) + estimateSize(n.Val) + case *fullNode: + // A full node contains up to 16 hashes (some nils), and a key + s := 3 + for i := 0; i < 16; i++ { + if child := n.Children[i]; child != nil { + s += estimateSize(child) + } else { + s++ + } + } + return s + case valueNode: + return 1 + len(n) + case hashNode: + return 1 + len(n) + default: + panic(fmt.Sprintf("node type %T", n)) + } +} diff --git a/trie/database.go b/trie/database.go new file mode 100644 index 0000000000..80f4ead564 --- /dev/null +++ b/trie/database.go @@ -0,0 +1,899 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "errors" + "fmt" + "io" + "reflect" + "runtime" + "sync" + "time" + + "github.com/VictoriaMetrics/fastcache" + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + "github.com/ethereum/go-ethereum/rlp" +) + +var ( + memcacheCleanHitMeter = metrics.NewRegisteredMeter("trie/memcache/clean/hit", nil) + memcacheCleanMissMeter = metrics.NewRegisteredMeter("trie/memcache/clean/miss", nil) + memcacheCleanReadMeter = metrics.NewRegisteredMeter("trie/memcache/clean/read", nil) + memcacheCleanWriteMeter = metrics.NewRegisteredMeter("trie/memcache/clean/write", nil) + + memcacheDirtyHitMeter = metrics.NewRegisteredMeter("trie/memcache/dirty/hit", nil) + memcacheDirtyMissMeter = metrics.NewRegisteredMeter("trie/memcache/dirty/miss", nil) + memcacheDirtyReadMeter = metrics.NewRegisteredMeter("trie/memcache/dirty/read", nil) + memcacheDirtyWriteMeter = metrics.NewRegisteredMeter("trie/memcache/dirty/write", nil) + + memcacheFlushTimeTimer = metrics.NewRegisteredResettingTimer("trie/memcache/flush/time", nil) + memcacheFlushNodesMeter = metrics.NewRegisteredMeter("trie/memcache/flush/nodes", nil) + memcacheFlushSizeMeter = metrics.NewRegisteredMeter("trie/memcache/flush/size", nil) + + memcacheGCTimeTimer = metrics.NewRegisteredResettingTimer("trie/memcache/gc/time", nil) + memcacheGCNodesMeter = metrics.NewRegisteredMeter("trie/memcache/gc/nodes", nil) + memcacheGCSizeMeter = metrics.NewRegisteredMeter("trie/memcache/gc/size", nil) + + memcacheCommitTimeTimer = metrics.NewRegisteredResettingTimer("trie/memcache/commit/time", nil) + memcacheCommitNodesMeter = metrics.NewRegisteredMeter("trie/memcache/commit/nodes", nil) + memcacheCommitSizeMeter = metrics.NewRegisteredMeter("trie/memcache/commit/size", nil) +) + +// Database is an intermediate write layer between the trie data structures and +// the disk database. The aim is to accumulate trie writes in-memory and only +// periodically flush a couple tries to disk, garbage collecting the remainder. +// +// Note, the trie Database is **not** thread safe in its mutations, but it **is** +// thread safe in providing individual, independent node access. The rationale +// behind this split design is to provide read access to RPC handlers and sync +// servers even while the trie is executing expensive garbage collection. +type Database struct { + diskdb ethdb.KeyValueStore // Persistent storage for matured trie nodes + + cleans *fastcache.Cache // GC friendly memory cache of clean node RLPs + dirties map[common.Hash]*cachedNode // Data and references relationships of dirty trie nodes + oldest common.Hash // Oldest tracked node, flush-list head + newest common.Hash // Newest tracked node, flush-list tail + + preimages map[common.Hash][]byte // Preimages of nodes from the secure trie + + gctime time.Duration // Time spent on garbage collection since last commit + gcnodes uint64 // Nodes garbage collected since last commit + gcsize common.StorageSize // Data storage garbage collected since last commit + + flushtime time.Duration // Time spent on data flushing since last commit + flushnodes uint64 // Nodes flushed since last commit + flushsize common.StorageSize // Data storage flushed since last commit + + dirtiesSize common.StorageSize // Storage size of the dirty node cache (exc. metadata) + childrenSize common.StorageSize // Storage size of the external children tracking + preimagesSize common.StorageSize // Storage size of the preimages cache + + lock sync.RWMutex +} + +// rawNode is a simple binary blob used to differentiate between collapsed trie +// nodes and already encoded RLP binary blobs (while at the same time store them +// in the same cache fields). +type rawNode []byte + +func (n rawNode) cache() (hashNode, bool) { panic("this should never end up in a live trie") } +func (n rawNode) fstring(ind string) string { panic("this should never end up in a live trie") } + +func (n rawNode) EncodeRLP(w io.Writer) error { + _, err := w.Write(n) + return err +} + +// rawFullNode represents only the useful data content of a full node, with the +// caches and flags stripped out to minimize its data storage. This type honors +// the same RLP encoding as the original parent. +type rawFullNode [17]node + +func (n rawFullNode) cache() (hashNode, bool) { panic("this should never end up in a live trie") } +func (n rawFullNode) fstring(ind string) string { panic("this should never end up in a live trie") } + +func (n rawFullNode) EncodeRLP(w io.Writer) error { + var nodes [17]node + + for i, child := range n { + if child != nil { + nodes[i] = child + } else { + nodes[i] = nilValueNode + } + } + return rlp.Encode(w, nodes) +} + +// rawShortNode represents only the useful data content of a short node, with the +// caches and flags stripped out to minimize its data storage. This type honors +// the same RLP encoding as the original parent. +type rawShortNode struct { + Key []byte + Val node +} + +func (n rawShortNode) cache() (hashNode, bool) { panic("this should never end up in a live trie") } +func (n rawShortNode) fstring(ind string) string { panic("this should never end up in a live trie") } + +// cachedNode is all the information we know about a single cached trie node +// in the memory database write layer. +type cachedNode struct { + node node // Cached collapsed trie node, or raw rlp data + size uint16 // Byte size of the useful cached data + + parents uint32 // Number of live nodes referencing this one + children map[common.Hash]uint16 // External children referenced by this node + + flushPrev common.Hash // Previous node in the flush-list + flushNext common.Hash // Next node in the flush-list +} + +// cachedNodeSize is the raw size of a cachedNode data structure without any +// node data included. It's an approximate size, but should be a lot better +// than not counting them. +var cachedNodeSize = int(reflect.TypeOf(cachedNode{}).Size()) + +// cachedNodeChildrenSize is the raw size of an initialized but empty external +// reference map. +const cachedNodeChildrenSize = 48 + +// rlp returns the raw rlp encoded blob of the cached trie node, either directly +// from the cache, or by regenerating it from the collapsed node. +func (n *cachedNode) rlp() []byte { + if node, ok := n.node.(rawNode); ok { + return node + } + blob, err := rlp.EncodeToBytes(n.node) + if err != nil { + panic(err) + } + return blob +} + +// obj returns the decoded and expanded trie node, either directly from the cache, +// or by regenerating it from the rlp encoded blob. +func (n *cachedNode) obj(hash common.Hash) node { + if node, ok := n.node.(rawNode); ok { + return mustDecodeNode(hash[:], node) + } + return expandNode(hash[:], n.node) +} + +// forChilds invokes the callback for all the tracked children of this node, +// both the implicit ones from inside the node as well as the explicit ones +// from outside the node. +func (n *cachedNode) forChilds(onChild func(hash common.Hash)) { + for child := range n.children { + onChild(child) + } + if _, ok := n.node.(rawNode); !ok { + forGatherChildren(n.node, onChild) + } +} + +// forGatherChildren traverses the node hierarchy of a collapsed storage node and +// invokes the callback for all the hashnode children. +func forGatherChildren(n node, onChild func(hash common.Hash)) { + switch n := n.(type) { + case *rawShortNode: + forGatherChildren(n.Val, onChild) + case rawFullNode: + for i := 0; i < 16; i++ { + forGatherChildren(n[i], onChild) + } + case hashNode: + onChild(common.BytesToHash(n)) + case valueNode, nil, rawNode: + default: + panic(fmt.Sprintf("unknown node type: %T", n)) + } +} + +// simplifyNode traverses the hierarchy of an expanded memory node and discards +// all the internal caches, returning a node that only contains the raw data. +func simplifyNode(n node) node { + switch n := n.(type) { + case *shortNode: + // Short nodes discard the flags and cascade + return &rawShortNode{Key: n.Key, Val: simplifyNode(n.Val)} + + case *fullNode: + // Full nodes discard the flags and cascade + node := rawFullNode(n.Children) + for i := 0; i < len(node); i++ { + if node[i] != nil { + node[i] = simplifyNode(node[i]) + } + } + return node + + case valueNode, hashNode, rawNode: + return n + + default: + panic(fmt.Sprintf("unknown node type: %T", n)) + } +} + +// expandNode traverses the node hierarchy of a collapsed storage node and converts +// all fields and keys into expanded memory form. +func expandNode(hash hashNode, n node) node { + switch n := n.(type) { + case *rawShortNode: + // Short nodes need key and child expansion + return &shortNode{ + Key: compactToHex(n.Key), + Val: expandNode(nil, n.Val), + flags: nodeFlag{ + hash: hash, + }, + } + + case rawFullNode: + // Full nodes need child expansion + node := &fullNode{ + flags: nodeFlag{ + hash: hash, + }, + } + for i := 0; i < len(node.Children); i++ { + if n[i] != nil { + node.Children[i] = expandNode(nil, n[i]) + } + } + return node + + case valueNode, hashNode: + return n + + default: + panic(fmt.Sprintf("unknown node type: %T", n)) + } +} + +// Config defines all necessary options for database. +type Config struct { + Cache int // Memory allowance (MB) to use for caching trie nodes in memory + Journal string // Journal of clean cache to survive node restarts + Preimages bool // Flag whether the preimage of trie key is recorded +} + +// NewDatabase creates a new trie database to store ephemeral trie content before +// its written out to disk or garbage collected. No read cache is created, so all +// data retrievals will hit the underlying disk database. +func NewDatabase(diskdb ethdb.KeyValueStore) *Database { + return NewDatabaseWithConfig(diskdb, nil) +} + +// NewDatabaseWithConfig creates a new trie database to store ephemeral trie content +// before its written out to disk or garbage collected. It also acts as a read cache +// for nodes loaded from disk. +func NewDatabaseWithConfig(diskdb ethdb.KeyValueStore, config *Config) *Database { + var cleans *fastcache.Cache + if config != nil && config.Cache > 0 { + if config.Journal == "" { + cleans = fastcache.New(config.Cache * 1024 * 1024) + } else { + cleans = fastcache.LoadFromFileOrNew(config.Journal, config.Cache*1024*1024) + } + } + db := &Database{ + diskdb: diskdb, + cleans: cleans, + dirties: map[common.Hash]*cachedNode{{}: { + children: make(map[common.Hash]uint16), + }}, + } + if config == nil || config.Preimages { // TODO(karalabe): Flip to default off in the future + db.preimages = make(map[common.Hash][]byte) + } + return db +} + +// DiskDB retrieves the persistent storage backing the trie database. +func (db *Database) DiskDB() ethdb.KeyValueStore { + return db.diskdb +} + +// insert inserts a collapsed trie node into the memory database. +// The blob size must be specified to allow proper size tracking. +// All nodes inserted by this function will be reference tracked +// and in theory should only used for **trie nodes** insertion. +func (db *Database) insert(hash common.Hash, size int, node node) { + // If the node's already cached, skip + if _, ok := db.dirties[hash]; ok { + return + } + memcacheDirtyWriteMeter.Mark(int64(size)) + + // Create the cached entry for this node + entry := &cachedNode{ + node: simplifyNode(node), + size: uint16(size), + flushPrev: db.newest, + } + entry.forChilds(func(child common.Hash) { + if c := db.dirties[child]; c != nil { + c.parents++ + } + }) + db.dirties[hash] = entry + + // Update the flush-list endpoints + if db.oldest == (common.Hash{}) { + db.oldest, db.newest = hash, hash + } else { + db.dirties[db.newest].flushNext, db.newest = hash, hash + } + db.dirtiesSize += common.StorageSize(common.HashLength + entry.size) +} + +// insertPreimage writes a new trie node pre-image to the memory database if it's +// yet unknown. The method will NOT make a copy of the slice, +// only use if the preimage will NOT be changed later on. +// +// Note, this method assumes that the database's lock is held! +func (db *Database) insertPreimage(hash common.Hash, preimage []byte) { + // Short circuit if preimage collection is disabled + if db.preimages == nil { + return + } + // Track the preimage if a yet unknown one + if _, ok := db.preimages[hash]; ok { + return + } + db.preimages[hash] = preimage + db.preimagesSize += common.StorageSize(common.HashLength + len(preimage)) +} + +// node retrieves a cached trie node from memory, or returns nil if none can be +// found in the memory cache. +func (db *Database) node(hash common.Hash) node { + // Retrieve the node from the clean cache if available + if db.cleans != nil { + if enc := db.cleans.Get(nil, hash[:]); enc != nil { + memcacheCleanHitMeter.Mark(1) + memcacheCleanReadMeter.Mark(int64(len(enc))) + return mustDecodeNode(hash[:], enc) + } + } + // Retrieve the node from the dirty cache if available + db.lock.RLock() + dirty := db.dirties[hash] + db.lock.RUnlock() + + if dirty != nil { + memcacheDirtyHitMeter.Mark(1) + memcacheDirtyReadMeter.Mark(int64(dirty.size)) + return dirty.obj(hash) + } + memcacheDirtyMissMeter.Mark(1) + + // Content unavailable in memory, attempt to retrieve from disk + enc, err := db.diskdb.Get(hash[:]) + if err != nil || enc == nil { + return nil + } + if db.cleans != nil { + db.cleans.Set(hash[:], enc) + memcacheCleanMissMeter.Mark(1) + memcacheCleanWriteMeter.Mark(int64(len(enc))) + } + return mustDecodeNode(hash[:], enc) +} + +// Node retrieves an encoded cached trie node from memory. If it cannot be found +// cached, the method queries the persistent database for the content. +func (db *Database) Node(hash common.Hash) ([]byte, error) { + // It doesn't make sense to retrieve the metaroot + if hash == (common.Hash{}) { + return nil, errors.New("not found") + } + // Retrieve the node from the clean cache if available + if db.cleans != nil { + if enc := db.cleans.Get(nil, hash[:]); enc != nil { + memcacheCleanHitMeter.Mark(1) + memcacheCleanReadMeter.Mark(int64(len(enc))) + return enc, nil + } + } + // Retrieve the node from the dirty cache if available + db.lock.RLock() + dirty := db.dirties[hash] + db.lock.RUnlock() + + if dirty != nil { + memcacheDirtyHitMeter.Mark(1) + memcacheDirtyReadMeter.Mark(int64(dirty.size)) + return dirty.rlp(), nil + } + memcacheDirtyMissMeter.Mark(1) + + // Content unavailable in memory, attempt to retrieve from disk + enc := rawdb.ReadTrieNode(db.diskdb, hash) + if len(enc) != 0 { + if db.cleans != nil { + db.cleans.Set(hash[:], enc) + memcacheCleanMissMeter.Mark(1) + memcacheCleanWriteMeter.Mark(int64(len(enc))) + } + return enc, nil + } + return nil, errors.New("not found") +} + +// preimage retrieves a cached trie node pre-image from memory. If it cannot be +// found cached, the method queries the persistent database for the content. +func (db *Database) preimage(hash common.Hash) []byte { + // Short circuit if preimage collection is disabled + if db.preimages == nil { + return nil + } + // Retrieve the node from cache if available + db.lock.RLock() + preimage := db.preimages[hash] + db.lock.RUnlock() + + if preimage != nil { + return preimage + } + return rawdb.ReadPreimage(db.diskdb, hash) +} + +// Nodes retrieves the hashes of all the nodes cached within the memory database. +// This method is extremely expensive and should only be used to validate internal +// states in test code. +func (db *Database) Nodes() []common.Hash { + db.lock.RLock() + defer db.lock.RUnlock() + + hashes := make([]common.Hash, 0, len(db.dirties)) + for hash := range db.dirties { + if hash != (common.Hash{}) { // Special case for "root" references/nodes + hashes = append(hashes, hash) + } + } + return hashes +} + +// Reference adds a new reference from a parent node to a child node. +// This function is used to add reference between internal trie node +// and external node(e.g. storage trie root), all internal trie nodes +// are referenced together by database itself. +func (db *Database) Reference(child common.Hash, parent common.Hash) { + db.lock.Lock() + defer db.lock.Unlock() + + db.reference(child, parent) +} + +// reference is the private locked version of Reference. +func (db *Database) reference(child common.Hash, parent common.Hash) { + // If the node does not exist, it's a node pulled from disk, skip + node, ok := db.dirties[child] + if !ok { + return + } + // If the reference already exists, only duplicate for roots + if db.dirties[parent].children == nil { + db.dirties[parent].children = make(map[common.Hash]uint16) + db.childrenSize += cachedNodeChildrenSize + } else if _, ok = db.dirties[parent].children[child]; ok && parent != (common.Hash{}) { + return + } + node.parents++ + db.dirties[parent].children[child]++ + if db.dirties[parent].children[child] == 1 { + db.childrenSize += common.HashLength + 2 // uint16 counter + } +} + +// Dereference removes an existing reference from a root node. +func (db *Database) Dereference(root common.Hash) { + // Sanity check to ensure that the meta-root is not removed + if root == (common.Hash{}) { + log.Error("Attempted to dereference the trie cache meta root") + return + } + db.lock.Lock() + defer db.lock.Unlock() + + nodes, storage, start := len(db.dirties), db.dirtiesSize, time.Now() + db.dereference(root, common.Hash{}) + + db.gcnodes += uint64(nodes - len(db.dirties)) + db.gcsize += storage - db.dirtiesSize + db.gctime += time.Since(start) + + memcacheGCTimeTimer.Update(time.Since(start)) + memcacheGCSizeMeter.Mark(int64(storage - db.dirtiesSize)) + memcacheGCNodesMeter.Mark(int64(nodes - len(db.dirties))) + + log.Debug("Dereferenced trie from memory database", "nodes", nodes-len(db.dirties), "size", storage-db.dirtiesSize, "time", time.Since(start), + "gcnodes", db.gcnodes, "gcsize", db.gcsize, "gctime", db.gctime, "livenodes", len(db.dirties), "livesize", db.dirtiesSize) +} + +// dereference is the private locked version of Dereference. +func (db *Database) dereference(child common.Hash, parent common.Hash) { + // Dereference the parent-child + node := db.dirties[parent] + + if node.children != nil && node.children[child] > 0 { + node.children[child]-- + if node.children[child] == 0 { + delete(node.children, child) + db.childrenSize -= (common.HashLength + 2) // uint16 counter + } + } + // If the child does not exist, it's a previously committed node. + node, ok := db.dirties[child] + if !ok { + return + } + // If there are no more references to the child, delete it and cascade + if node.parents > 0 { + // This is a special cornercase where a node loaded from disk (i.e. not in the + // memcache any more) gets reinjected as a new node (short node split into full, + // then reverted into short), causing a cached node to have no parents. That is + // no problem in itself, but don't make maxint parents out of it. + node.parents-- + } + if node.parents == 0 { + // Remove the node from the flush-list + switch child { + case db.oldest: + db.oldest = node.flushNext + db.dirties[node.flushNext].flushPrev = common.Hash{} + case db.newest: + db.newest = node.flushPrev + db.dirties[node.flushPrev].flushNext = common.Hash{} + default: + db.dirties[node.flushPrev].flushNext = node.flushNext + db.dirties[node.flushNext].flushPrev = node.flushPrev + } + // Dereference all children and delete the node + node.forChilds(func(hash common.Hash) { + db.dereference(hash, child) + }) + delete(db.dirties, child) + db.dirtiesSize -= common.StorageSize(common.HashLength + int(node.size)) + if node.children != nil { + db.childrenSize -= cachedNodeChildrenSize + } + } +} + +// Cap iteratively flushes old but still referenced trie nodes until the total +// memory usage goes below the given threshold. +// +// Note, this method is a non-synchronized mutator. It is unsafe to call this +// concurrently with other mutators. +func (db *Database) Cap(limit common.StorageSize) error { + // Create a database batch to flush persistent data out. It is important that + // outside code doesn't see an inconsistent state (referenced data removed from + // memory cache during commit but not yet in persistent storage). This is ensured + // by only uncaching existing data when the database write finalizes. + nodes, storage, start := len(db.dirties), db.dirtiesSize, time.Now() + batch := db.diskdb.NewBatch() + + // db.dirtiesSize only contains the useful data in the cache, but when reporting + // the total memory consumption, the maintenance metadata is also needed to be + // counted. + size := db.dirtiesSize + common.StorageSize((len(db.dirties)-1)*cachedNodeSize) + size += db.childrenSize - common.StorageSize(len(db.dirties[common.Hash{}].children)*(common.HashLength+2)) + + // If the preimage cache got large enough, push to disk. If it's still small + // leave for later to deduplicate writes. + flushPreimages := db.preimagesSize > 4*1024*1024 + if flushPreimages { + if db.preimages == nil { + log.Error("Attempted to write preimages whilst disabled") + } else { + rawdb.WritePreimages(batch, db.preimages) + if batch.ValueSize() > ethdb.IdealBatchSize { + if err := batch.Write(); err != nil { + return err + } + batch.Reset() + } + } + } + // Keep committing nodes from the flush-list until we're below allowance + oldest := db.oldest + for size > limit && oldest != (common.Hash{}) { + // Fetch the oldest referenced node and push into the batch + node := db.dirties[oldest] + rawdb.WriteTrieNode(batch, oldest, node.rlp()) + + // If we exceeded the ideal batch size, commit and reset + if batch.ValueSize() >= ethdb.IdealBatchSize { + if err := batch.Write(); err != nil { + log.Error("Failed to write flush list to disk", "err", err) + return err + } + batch.Reset() + } + // Iterate to the next flush item, or abort if the size cap was achieved. Size + // is the total size, including the useful cached data (hash -> blob), the + // cache item metadata, as well as external children mappings. + size -= common.StorageSize(common.HashLength + int(node.size) + cachedNodeSize) + if node.children != nil { + size -= common.StorageSize(cachedNodeChildrenSize + len(node.children)*(common.HashLength+2)) + } + oldest = node.flushNext + } + // Flush out any remainder data from the last batch + if err := batch.Write(); err != nil { + log.Error("Failed to write flush list to disk", "err", err) + return err + } + // Write successful, clear out the flushed data + db.lock.Lock() + defer db.lock.Unlock() + + if flushPreimages { + if db.preimages == nil { + log.Error("Attempted to reset preimage cache whilst disabled") + } else { + db.preimages, db.preimagesSize = make(map[common.Hash][]byte), 0 + } + } + for db.oldest != oldest { + node := db.dirties[db.oldest] + delete(db.dirties, db.oldest) + db.oldest = node.flushNext + + db.dirtiesSize -= common.StorageSize(common.HashLength + int(node.size)) + if node.children != nil { + db.childrenSize -= common.StorageSize(cachedNodeChildrenSize + len(node.children)*(common.HashLength+2)) + } + } + if db.oldest != (common.Hash{}) { + db.dirties[db.oldest].flushPrev = common.Hash{} + } + db.flushnodes += uint64(nodes - len(db.dirties)) + db.flushsize += storage - db.dirtiesSize + db.flushtime += time.Since(start) + + memcacheFlushTimeTimer.Update(time.Since(start)) + memcacheFlushSizeMeter.Mark(int64(storage - db.dirtiesSize)) + memcacheFlushNodesMeter.Mark(int64(nodes - len(db.dirties))) + + log.Debug("Persisted nodes from memory database", "nodes", nodes-len(db.dirties), "size", storage-db.dirtiesSize, "time", time.Since(start), + "flushnodes", db.flushnodes, "flushsize", db.flushsize, "flushtime", db.flushtime, "livenodes", len(db.dirties), "livesize", db.dirtiesSize) + + return nil +} + +// Commit iterates over all the children of a particular node, writes them out +// to disk, forcefully tearing down all references in both directions. As a side +// effect, all pre-images accumulated up to this point are also written. +// +// Note, this method is a non-synchronized mutator. It is unsafe to call this +// concurrently with other mutators. +func (db *Database) Commit(node common.Hash, report bool, callback func(common.Hash)) error { + // Create a database batch to flush persistent data out. It is important that + // outside code doesn't see an inconsistent state (referenced data removed from + // memory cache during commit but not yet in persistent storage). This is ensured + // by only uncaching existing data when the database write finalizes. + start := time.Now() + batch := db.diskdb.NewBatch() + + // Move all of the accumulated preimages into a write batch + if db.preimages != nil { + rawdb.WritePreimages(batch, db.preimages) + // Since we're going to replay trie node writes into the clean cache, flush out + // any batched pre-images before continuing. + if err := batch.Write(); err != nil { + return err + } + batch.Reset() + } + // Move the trie itself into the batch, flushing if enough data is accumulated + nodes, storage := len(db.dirties), db.dirtiesSize + + uncacher := &cleaner{db} + if err := db.commit(node, batch, uncacher, callback); err != nil { + log.Error("Failed to commit trie from trie database", "err", err) + return err + } + // Trie mostly committed to disk, flush any batch leftovers + if err := batch.Write(); err != nil { + log.Error("Failed to write trie to disk", "err", err) + return err + } + // Uncache any leftovers in the last batch + db.lock.Lock() + defer db.lock.Unlock() + + batch.Replay(uncacher) + batch.Reset() + + // Reset the storage counters and bumped metrics + if db.preimages != nil { + db.preimages, db.preimagesSize = make(map[common.Hash][]byte), 0 + } + memcacheCommitTimeTimer.Update(time.Since(start)) + memcacheCommitSizeMeter.Mark(int64(storage - db.dirtiesSize)) + memcacheCommitNodesMeter.Mark(int64(nodes - len(db.dirties))) + + logger := log.Info + if !report { + logger = log.Debug + } + logger("Persisted trie from memory database", "nodes", nodes-len(db.dirties)+int(db.flushnodes), "size", storage-db.dirtiesSize+db.flushsize, "time", time.Since(start)+db.flushtime, + "gcnodes", db.gcnodes, "gcsize", db.gcsize, "gctime", db.gctime, "livenodes", len(db.dirties), "livesize", db.dirtiesSize) + + // Reset the garbage collection statistics + db.gcnodes, db.gcsize, db.gctime = 0, 0, 0 + db.flushnodes, db.flushsize, db.flushtime = 0, 0, 0 + + return nil +} + +// commit is the private locked version of Commit. +func (db *Database) commit(hash common.Hash, batch ethdb.Batch, uncacher *cleaner, callback func(common.Hash)) error { + // If the node does not exist, it's a previously committed node + node, ok := db.dirties[hash] + if !ok { + return nil + } + var err error + node.forChilds(func(child common.Hash) { + if err == nil { + err = db.commit(child, batch, uncacher, callback) + } + }) + if err != nil { + return err + } + // If we've reached an optimal batch size, commit and start over + rawdb.WriteTrieNode(batch, hash, node.rlp()) + if callback != nil { + callback(hash) + } + if batch.ValueSize() >= ethdb.IdealBatchSize { + if err := batch.Write(); err != nil { + return err + } + db.lock.Lock() + batch.Replay(uncacher) + batch.Reset() + db.lock.Unlock() + } + return nil +} + +// cleaner is a database batch replayer that takes a batch of write operations +// and cleans up the trie database from anything written to disk. +type cleaner struct { + db *Database +} + +// Put reacts to database writes and implements dirty data uncaching. This is the +// post-processing step of a commit operation where the already persisted trie is +// removed from the dirty cache and moved into the clean cache. The reason behind +// the two-phase commit is to ensure data availability while moving from memory +// to disk. +func (c *cleaner) Put(key []byte, rlp []byte) error { + hash := common.BytesToHash(key) + + // If the node does not exist, we're done on this path + node, ok := c.db.dirties[hash] + if !ok { + return nil + } + // Node still exists, remove it from the flush-list + switch hash { + case c.db.oldest: + c.db.oldest = node.flushNext + c.db.dirties[node.flushNext].flushPrev = common.Hash{} + case c.db.newest: + c.db.newest = node.flushPrev + c.db.dirties[node.flushPrev].flushNext = common.Hash{} + default: + c.db.dirties[node.flushPrev].flushNext = node.flushNext + c.db.dirties[node.flushNext].flushPrev = node.flushPrev + } + // Remove the node from the dirty cache + delete(c.db.dirties, hash) + c.db.dirtiesSize -= common.StorageSize(common.HashLength + int(node.size)) + if node.children != nil { + c.db.dirtiesSize -= common.StorageSize(cachedNodeChildrenSize + len(node.children)*(common.HashLength+2)) + } + // Move the flushed node into the clean cache to prevent insta-reloads + if c.db.cleans != nil { + c.db.cleans.Set(hash[:], rlp) + memcacheCleanWriteMeter.Mark(int64(len(rlp))) + } + return nil +} + +func (c *cleaner) Delete(key []byte) error { + panic("not implemented") +} + +// Size returns the current storage size of the memory cache in front of the +// persistent database layer. +func (db *Database) Size() (common.StorageSize, common.StorageSize) { + db.lock.RLock() + defer db.lock.RUnlock() + + // db.dirtiesSize only contains the useful data in the cache, but when reporting + // the total memory consumption, the maintenance metadata is also needed to be + // counted. + metadataSize := common.StorageSize((len(db.dirties) - 1) * cachedNodeSize) + metarootRefs := common.StorageSize(len(db.dirties[common.Hash{}].children) * (common.HashLength + 2)) + return db.dirtiesSize + db.childrenSize + metadataSize - metarootRefs, db.preimagesSize +} + +// saveCache saves clean state cache to given directory path +// using specified CPU cores. +func (db *Database) saveCache(dir string, threads int) error { + if db.cleans == nil { + return nil + } + log.Info("Writing clean trie cache to disk", "path", dir, "threads", threads) + + start := time.Now() + err := db.cleans.SaveToFileConcurrent(dir, threads) + if err != nil { + log.Error("Failed to persist clean trie cache", "error", err) + return err + } + log.Info("Persisted the clean trie cache", "path", dir, "elapsed", common.PrettyDuration(time.Since(start))) + return nil +} + +// SaveCache atomically saves fast cache data to the given dir using all +// available CPU cores. +func (db *Database) SaveCache(dir string) error { + return db.saveCache(dir, runtime.GOMAXPROCS(0)) +} + +// SaveCachePeriodically atomically saves fast cache data to the given dir with +// the specified interval. All dump operation will only use a single CPU core. +func (db *Database) SaveCachePeriodically(dir string, interval time.Duration, stopCh <-chan struct{}) { + ticker := time.NewTicker(interval) + defer ticker.Stop() + + for { + select { + case <-ticker.C: + db.saveCache(dir, 1) + case <-stopCh: + return + } + } +} diff --git a/trie/database_test.go b/trie/database_test.go new file mode 100644 index 0000000000..4f3a941159 --- /dev/null +++ b/trie/database_test.go @@ -0,0 +1,43 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "testing" + + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" +) + +// Tests that the trie database returns a missing trie node error if attempting +// to retrieve the meta root. +func TestDatabaseMetarootFetch(t *testing.T) { + db := NewDatabase(memorydb.New()) + if _, err := db.Node(common.Hash{}); err == nil { + t.Fatalf("metaroot retrieval succeeded") + } +} diff --git a/trie/encoding.go b/trie/encoding.go new file mode 100644 index 0000000000..5c2da51871 --- /dev/null +++ b/trie/encoding.go @@ -0,0 +1,155 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +// Trie keys are dealt with in three distinct encodings: +// +// KEYBYTES encoding contains the actual key and nothing else. This encoding is the +// input to most API functions. +// +// HEX encoding contains one byte for each nibble of the key and an optional trailing +// 'terminator' byte of value 0x10 which indicates whether or not the node at the key +// contains a value. Hex key encoding is used for nodes loaded in memory because it's +// convenient to access. +// +// COMPACT encoding is defined by the Ethereum Yellow Paper (it's called "hex prefix +// encoding" there) and contains the bytes of the key and a flag. The high nibble of the +// first byte contains the flag; the lowest bit encoding the oddness of the length and +// the second-lowest encoding whether the node at the key is a value node. The low nibble +// of the first byte is zero in the case of an even number of nibbles and the first nibble +// in the case of an odd number. All remaining nibbles (now an even number) fit properly +// into the remaining bytes. Compact encoding is used for nodes stored on disk. + +func hexToCompact(hex []byte) []byte { + terminator := byte(0) + if hasTerm(hex) { + terminator = 1 + hex = hex[:len(hex)-1] + } + buf := make([]byte, len(hex)/2+1) + buf[0] = terminator << 5 // the flag byte + if len(hex)&1 == 1 { + buf[0] |= 1 << 4 // odd flag + buf[0] |= hex[0] // first nibble is contained in the first byte + hex = hex[1:] + } + decodeNibbles(hex, buf[1:]) + return buf +} + +// hexToCompactInPlace places the compact key in input buffer, returning the length +// needed for the representation +func hexToCompactInPlace(hex []byte) int { + var ( + hexLen = len(hex) // length of the hex input + firstByte = byte(0) + ) + // Check if we have a terminator there + if hexLen > 0 && hex[hexLen-1] == 16 { + firstByte = 1 << 5 + hexLen-- // last part was the terminator, ignore that + } + var ( + binLen = hexLen/2 + 1 + ni = 0 // index in hex + bi = 1 // index in bin (compact) + ) + if hexLen&1 == 1 { + firstByte |= 1 << 4 // odd flag + firstByte |= hex[0] // first nibble is contained in the first byte + ni++ + } + for ; ni < hexLen; bi, ni = bi+1, ni+2 { + hex[bi] = hex[ni]<<4 | hex[ni+1] + } + hex[0] = firstByte + return binLen +} + +func compactToHex(compact []byte) []byte { + if len(compact) == 0 { + return compact + } + base := keybytesToHex(compact) + // delete terminator flag + if base[0] < 2 { + base = base[:len(base)-1] + } + // apply odd flag + chop := 2 - base[0]&1 + return base[chop:] +} + +func keybytesToHex(str []byte) []byte { + l := len(str)*2 + 1 + var nibbles = make([]byte, l) + for i, b := range str { + nibbles[i*2] = b / 16 + nibbles[i*2+1] = b % 16 + } + nibbles[l-1] = 16 + return nibbles +} + +// hexToKeybytes turns hex nibbles into key bytes. +// This can only be used for keys of even length. +func hexToKeybytes(hex []byte) []byte { + if hasTerm(hex) { + hex = hex[:len(hex)-1] + } + if len(hex)&1 != 0 { + panic("can't convert hex key of odd length") + } + key := make([]byte, len(hex)/2) + decodeNibbles(hex, key) + return key +} + +func decodeNibbles(nibbles []byte, bytes []byte) { + for bi, ni := 0, 0; ni < len(nibbles); bi, ni = bi+1, ni+2 { + bytes[bi] = nibbles[ni]<<4 | nibbles[ni+1] + } +} + +// prefixLen returns the length of the common prefix of a and b. +func prefixLen(a, b []byte) int { + var i, length = 0, len(a) + if len(b) < length { + length = len(b) + } + for ; i < length; i++ { + if a[i] != b[i] { + break + } + } + return i +} + +// hasTerm returns whether a hex key has the terminator flag. +func hasTerm(s []byte) bool { + return len(s) > 0 && s[len(s)-1] == 16 +} diff --git a/trie/encoding_test.go b/trie/encoding_test.go new file mode 100644 index 0000000000..e83071bffd --- /dev/null +++ b/trie/encoding_test.go @@ -0,0 +1,150 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "encoding/hex" + "math/rand" + "testing" +) + +func TestHexCompact(t *testing.T) { + tests := []struct{ hex, compact []byte }{ + // empty keys, with and without terminator. + {hex: []byte{}, compact: []byte{0x00}}, + {hex: []byte{16}, compact: []byte{0x20}}, + // odd length, no terminator + {hex: []byte{1, 2, 3, 4, 5}, compact: []byte{0x11, 0x23, 0x45}}, + // even length, no terminator + {hex: []byte{0, 1, 2, 3, 4, 5}, compact: []byte{0x00, 0x01, 0x23, 0x45}}, + // odd length, terminator + {hex: []byte{15, 1, 12, 11, 8, 16 /*term*/}, compact: []byte{0x3f, 0x1c, 0xb8}}, + // even length, terminator + {hex: []byte{0, 15, 1, 12, 11, 8, 16 /*term*/}, compact: []byte{0x20, 0x0f, 0x1c, 0xb8}}, + } + for _, test := range tests { + if c := hexToCompact(test.hex); !bytes.Equal(c, test.compact) { + t.Errorf("hexToCompact(%x) -> %x, want %x", test.hex, c, test.compact) + } + if h := compactToHex(test.compact); !bytes.Equal(h, test.hex) { + t.Errorf("compactToHex(%x) -> %x, want %x", test.compact, h, test.hex) + } + } +} + +func TestHexKeybytes(t *testing.T) { + tests := []struct{ key, hexIn, hexOut []byte }{ + {key: []byte{}, hexIn: []byte{16}, hexOut: []byte{16}}, + {key: []byte{}, hexIn: []byte{}, hexOut: []byte{16}}, + { + key: []byte{0x12, 0x34, 0x56}, + hexIn: []byte{1, 2, 3, 4, 5, 6, 16}, + hexOut: []byte{1, 2, 3, 4, 5, 6, 16}, + }, + { + key: []byte{0x12, 0x34, 0x5}, + hexIn: []byte{1, 2, 3, 4, 0, 5, 16}, + hexOut: []byte{1, 2, 3, 4, 0, 5, 16}, + }, + { + key: []byte{0x12, 0x34, 0x56}, + hexIn: []byte{1, 2, 3, 4, 5, 6}, + hexOut: []byte{1, 2, 3, 4, 5, 6, 16}, + }, + } + for _, test := range tests { + if h := keybytesToHex(test.key); !bytes.Equal(h, test.hexOut) { + t.Errorf("keybytesToHex(%x) -> %x, want %x", test.key, h, test.hexOut) + } + if k := hexToKeybytes(test.hexIn); !bytes.Equal(k, test.key) { + t.Errorf("hexToKeybytes(%x) -> %x, want %x", test.hexIn, k, test.key) + } + } +} + +func TestHexToCompactInPlace(t *testing.T) { + for i, keyS := range []string{ + "00", + "060a040c0f000a090b040803010801010900080d090a0a0d0903000b10", + "10", + } { + hexBytes, _ := hex.DecodeString(keyS) + exp := hexToCompact(hexBytes) + sz := hexToCompactInPlace(hexBytes) + got := hexBytes[:sz] + if !bytes.Equal(exp, got) { + t.Fatalf("test %d: encoding err\ninp %v\ngot %x\nexp %x\n", i, keyS, got, exp) + } + } +} + +func TestHexToCompactInPlaceRandom(t *testing.T) { + for i := 0; i < 10000; i++ { + l := rand.Intn(128) + key := make([]byte, l) + rand.Read(key) + hexBytes := keybytesToHex(key) + hexOrig := []byte(string(hexBytes)) + exp := hexToCompact(hexBytes) + sz := hexToCompactInPlace(hexBytes) + got := hexBytes[:sz] + + if !bytes.Equal(exp, got) { + t.Fatalf("encoding err \ncpt %x\nhex %x\ngot %x\nexp %x\n", + key, hexOrig, got, exp) + } + } +} + +func BenchmarkHexToCompact(b *testing.B) { + testBytes := []byte{0, 15, 1, 12, 11, 8, 16 /*term*/} + for i := 0; i < b.N; i++ { + hexToCompact(testBytes) + } +} + +func BenchmarkCompactToHex(b *testing.B) { + testBytes := []byte{0, 15, 1, 12, 11, 8, 16 /*term*/} + for i := 0; i < b.N; i++ { + compactToHex(testBytes) + } +} + +func BenchmarkKeybytesToHex(b *testing.B) { + testBytes := []byte{7, 6, 6, 5, 7, 2, 6, 2, 16} + for i := 0; i < b.N; i++ { + keybytesToHex(testBytes) + } +} + +func BenchmarkHexToKeybytes(b *testing.B) { + testBytes := []byte{7, 6, 6, 5, 7, 2, 6, 2, 16} + for i := 0; i < b.N; i++ { + hexToKeybytes(testBytes) + } +} diff --git a/trie/errors.go b/trie/errors.go new file mode 100644 index 0000000000..0323666cf7 --- /dev/null +++ b/trie/errors.go @@ -0,0 +1,45 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "fmt" + + "github.com/ethereum/go-ethereum/common" +) + +// MissingNodeError is returned by the trie functions (TryGet, TryUpdate, TryDelete) +// in the case where a trie node is not present in the local database. It contains +// information necessary for retrieving the missing node. +type MissingNodeError struct { + NodeHash common.Hash // hash of the missing node + Path []byte // hex-encoded path to the missing node +} + +func (err *MissingNodeError) Error() string { + return fmt.Sprintf("missing trie node %x (path %x)", err.NodeHash, err.Path) +} diff --git a/trie/hasher.go b/trie/hasher.go new file mode 100644 index 0000000000..76c2cdc7b1 --- /dev/null +++ b/trie/hasher.go @@ -0,0 +1,217 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "sync" + + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" + "golang.org/x/crypto/sha3" +) + +type sliceBuffer []byte + +func (b *sliceBuffer) Write(data []byte) (n int, err error) { + *b = append(*b, data...) + return len(data), nil +} + +func (b *sliceBuffer) Reset() { + *b = (*b)[:0] +} + +// hasher is a type used for the trie Hash operation. A hasher has some +// internal preallocated temp space +type hasher struct { + sha crypto.KeccakState + tmp sliceBuffer + parallel bool // Whether to use paralallel threads when hashing +} + +// hasherPool holds pureHashers +var hasherPool = sync.Pool{ + New: func() interface{} { + return &hasher{ + tmp: make(sliceBuffer, 0, 550), // cap is as large as a full fullNode. + sha: sha3.NewLegacyKeccak256().(crypto.KeccakState), + } + }, +} + +func newHasher(parallel bool) *hasher { + h := hasherPool.Get().(*hasher) + h.parallel = parallel + return h +} + +func returnHasherToPool(h *hasher) { + hasherPool.Put(h) +} + +// hash collapses a node down into a hash node, also returning a copy of the +// original node initialized with the computed hash to replace the original one. +func (h *hasher) hash(n node, force bool) (hashed node, cached node) { + // Return the cached hash if it's available + if hash, _ := n.cache(); hash != nil { + return hash, n + } + // Trie not processed yet, walk the children + switch n := n.(type) { + case *shortNode: + collapsed, cached := h.hashShortNodeChildren(n) + hashed := h.shortnodeToHash(collapsed, force) + // We need to retain the possibly _not_ hashed node, in case it was too + // small to be hashed + if hn, ok := hashed.(hashNode); ok { + cached.flags.hash = hn + } else { + cached.flags.hash = nil + } + return hashed, cached + case *fullNode: + collapsed, cached := h.hashFullNodeChildren(n) + hashed = h.fullnodeToHash(collapsed, force) + if hn, ok := hashed.(hashNode); ok { + cached.flags.hash = hn + } else { + cached.flags.hash = nil + } + return hashed, cached + default: + // Value and hash nodes don't have children so they're left as were + return n, n + } +} + +// hashShortNodeChildren collapses the short node. The returned collapsed node +// holds a live reference to the Key, and must not be modified. +// The cached +func (h *hasher) hashShortNodeChildren(n *shortNode) (collapsed, cached *shortNode) { + // Hash the short node's child, caching the newly hashed subtree + collapsed, cached = n.copy(), n.copy() + // Previously, we did copy this one. We don't seem to need to actually + // do that, since we don't overwrite/reuse keys + //cached.Key = common.CopyBytes(n.Key) + collapsed.Key = hexToCompact(n.Key) + // Unless the child is a valuenode or hashnode, hash it + switch n.Val.(type) { + case *fullNode, *shortNode: + collapsed.Val, cached.Val = h.hash(n.Val, false) + } + return collapsed, cached +} + +func (h *hasher) hashFullNodeChildren(n *fullNode) (collapsed *fullNode, cached *fullNode) { + // Hash the full node's children, caching the newly hashed subtrees + cached = n.copy() + collapsed = n.copy() + if h.parallel { + var wg sync.WaitGroup + wg.Add(16) + for i := 0; i < 16; i++ { + go func(i int) { + hasher := newHasher(false) + if child := n.Children[i]; child != nil { + collapsed.Children[i], cached.Children[i] = hasher.hash(child, false) + } else { + collapsed.Children[i] = nilValueNode + } + returnHasherToPool(hasher) + wg.Done() + }(i) + } + wg.Wait() + } else { + for i := 0; i < 16; i++ { + if child := n.Children[i]; child != nil { + collapsed.Children[i], cached.Children[i] = h.hash(child, false) + } else { + collapsed.Children[i] = nilValueNode + } + } + } + return collapsed, cached +} + +// shortnodeToHash creates a hashNode from a shortNode. The supplied shortnode +// should have hex-type Key, which will be converted (without modification) +// into compact form for RLP encoding. +// If the rlp data is smaller than 32 bytes, `nil` is returned. +func (h *hasher) shortnodeToHash(n *shortNode, force bool) node { + h.tmp.Reset() + if err := rlp.Encode(&h.tmp, n); err != nil { + panic("encode error: " + err.Error()) + } + + if len(h.tmp) < 32 && !force { + return n // Nodes smaller than 32 bytes are stored inside their parent + } + return h.hashData(h.tmp) +} + +// shortnodeToHash is used to creates a hashNode from a set of hashNodes, (which +// may contain nil values) +func (h *hasher) fullnodeToHash(n *fullNode, force bool) node { + h.tmp.Reset() + // Generate the RLP encoding of the node + if err := n.EncodeRLP(&h.tmp); err != nil { + panic("encode error: " + err.Error()) + } + + if len(h.tmp) < 32 && !force { + return n // Nodes smaller than 32 bytes are stored inside their parent + } + return h.hashData(h.tmp) +} + +// hashData hashes the provided data +func (h *hasher) hashData(data []byte) hashNode { + n := make(hashNode, 32) + h.sha.Reset() + h.sha.Write(data) + h.sha.Read(n) + return n +} + +// proofHash is used to construct trie proofs, and returns the 'collapsed' +// node (for later RLP encoding) aswell as the hashed node -- unless the +// node is smaller than 32 bytes, in which case it will be returned as is. +// This method does not do anything on value- or hash-nodes. +func (h *hasher) proofHash(original node) (collapsed, hashed node) { + switch n := original.(type) { + case *shortNode: + sn, _ := h.hashShortNodeChildren(n) + return sn, h.shortnodeToHash(sn, false) + case *fullNode: + fn, _ := h.hashFullNodeChildren(n) + return fn, h.fullnodeToHash(fn, false) + default: + // Value and hash nodes don't have children so they're left as were + return n, n + } +} diff --git a/trie/iterator.go b/trie/iterator.go new file mode 100644 index 0000000000..0979bc9733 --- /dev/null +++ b/trie/iterator.go @@ -0,0 +1,724 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "container/heap" + "errors" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" +) + +// Iterator is a key-value trie iterator that traverses a Trie. +type Iterator struct { + nodeIt NodeIterator + + Key []byte // Current data key on which the iterator is positioned on + Value []byte // Current data value on which the iterator is positioned on + Err error +} + +// NewIterator creates a new key-value iterator from a node iterator. +// Note that the value returned by the iterator is raw. If the content is encoded +// (e.g. storage value is RLP-encoded), it's caller's duty to decode it. +func NewIterator(it NodeIterator) *Iterator { + return &Iterator{ + nodeIt: it, + } +} + +// Next moves the iterator forward one key-value entry. +func (it *Iterator) Next() bool { + for it.nodeIt.Next(true) { + if it.nodeIt.Leaf() { + it.Key = it.nodeIt.LeafKey() + it.Value = it.nodeIt.LeafBlob() + return true + } + } + it.Key = nil + it.Value = nil + it.Err = it.nodeIt.Error() + return false +} + +// Prove generates the Merkle proof for the leaf node the iterator is currently +// positioned on. +func (it *Iterator) Prove() [][]byte { + return it.nodeIt.LeafProof() +} + +// NodeIterator is an iterator to traverse the trie pre-order. +type NodeIterator interface { + // Next moves the iterator to the next node. If the parameter is false, any child + // nodes will be skipped. + Next(bool) bool + + // Error returns the error status of the iterator. + Error() error + + // Hash returns the hash of the current node. + Hash() common.Hash + + // Parent returns the hash of the parent of the current node. The hash may be the one + // grandparent if the immediate parent is an internal node with no hash. + Parent() common.Hash + + // Path returns the hex-encoded path to the current node. + // Callers must not retain references to the return value after calling Next. + // For leaf nodes, the last element of the path is the 'terminator symbol' 0x10. + Path() []byte + + // Leaf returns true iff the current node is a leaf node. + Leaf() bool + + // LeafKey returns the key of the leaf. The method panics if the iterator is not + // positioned at a leaf. Callers must not retain references to the value after + // calling Next. + LeafKey() []byte + + // LeafBlob returns the content of the leaf. The method panics if the iterator + // is not positioned at a leaf. Callers must not retain references to the value + // after calling Next. + LeafBlob() []byte + + // LeafProof returns the Merkle proof of the leaf. The method panics if the + // iterator is not positioned at a leaf. Callers must not retain references + // to the value after calling Next. + LeafProof() [][]byte + + // AddResolver sets an intermediate database to use for looking up trie nodes + // before reaching into the real persistent layer. + // + // This is not required for normal operation, rather is an optimization for + // cases where trie nodes can be recovered from some external mechanism without + // reading from disk. In those cases, this resolver allows short circuiting + // accesses and returning them from memory. + // + // Before adding a similar mechanism to any other place in Geth, consider + // making trie.Database an interface and wrapping at that level. It's a huge + // refactor, but it could be worth it if another occurrence arises. + AddResolver(ethdb.KeyValueStore) +} + +// nodeIteratorState represents the iteration state at one particular node of the +// trie, which can be resumed at a later invocation. +type nodeIteratorState struct { + hash common.Hash // Hash of the node being iterated (nil if not standalone) + node node // Trie node being iterated + parent common.Hash // Hash of the first full ancestor node (nil if current is the root) + index int // Child to be processed next + pathlen int // Length of the path to this node +} + +type nodeIterator struct { + trie *Trie // Trie being iterated + stack []*nodeIteratorState // Hierarchy of trie nodes persisting the iteration state + path []byte // Path to the current node + err error // Failure set in case of an internal error in the iterator + + resolver ethdb.KeyValueStore // Optional intermediate resolver above the disk layer +} + +// errIteratorEnd is stored in nodeIterator.err when iteration is done. +var errIteratorEnd = errors.New("end of iteration") + +// seekError is stored in nodeIterator.err if the initial seek has failed. +type seekError struct { + key []byte + err error +} + +func (e seekError) Error() string { + return "seek error: " + e.err.Error() +} + +func newNodeIterator(trie *Trie, start []byte) NodeIterator { + if trie.Hash() == emptyState { + return new(nodeIterator) + } + it := &nodeIterator{trie: trie} + it.err = it.seek(start) + return it +} + +func (it *nodeIterator) AddResolver(resolver ethdb.KeyValueStore) { + it.resolver = resolver +} + +func (it *nodeIterator) Hash() common.Hash { + if len(it.stack) == 0 { + return common.Hash{} + } + return it.stack[len(it.stack)-1].hash +} + +func (it *nodeIterator) Parent() common.Hash { + if len(it.stack) == 0 { + return common.Hash{} + } + return it.stack[len(it.stack)-1].parent +} + +func (it *nodeIterator) Leaf() bool { + return hasTerm(it.path) +} + +func (it *nodeIterator) LeafKey() []byte { + if len(it.stack) > 0 { + if _, ok := it.stack[len(it.stack)-1].node.(valueNode); ok { + return hexToKeybytes(it.path) + } + } + panic("not at leaf") +} + +func (it *nodeIterator) LeafBlob() []byte { + if len(it.stack) > 0 { + if node, ok := it.stack[len(it.stack)-1].node.(valueNode); ok { + return node + } + } + panic("not at leaf") +} + +func (it *nodeIterator) LeafProof() [][]byte { + if len(it.stack) > 0 { + if _, ok := it.stack[len(it.stack)-1].node.(valueNode); ok { + hasher := newHasher(false) + defer returnHasherToPool(hasher) + proofs := make([][]byte, 0, len(it.stack)) + + for i, item := range it.stack[:len(it.stack)-1] { + // Gather nodes that end up as hash nodes (or the root) + node, hashed := hasher.proofHash(item.node) + if _, ok := hashed.(hashNode); ok || i == 0 { + enc, _ := rlp.EncodeToBytes(node) + proofs = append(proofs, enc) + } + } + return proofs + } + } + panic("not at leaf") +} + +func (it *nodeIterator) Path() []byte { + return it.path +} + +func (it *nodeIterator) Error() error { + if it.err == errIteratorEnd { + return nil + } + if seek, ok := it.err.(seekError); ok { + return seek.err + } + return it.err +} + +// Next moves the iterator to the next node, returning whether there are any +// further nodes. In case of an internal error this method returns false and +// sets the Error field to the encountered failure. If `descend` is false, +// skips iterating over any subnodes of the current node. +func (it *nodeIterator) Next(descend bool) bool { + if it.err == errIteratorEnd { + return false + } + if seek, ok := it.err.(seekError); ok { + if it.err = it.seek(seek.key); it.err != nil { + return false + } + } + // Otherwise step forward with the iterator and report any errors. + state, parentIndex, path, err := it.peek(descend) + it.err = err + if it.err != nil { + return false + } + it.push(state, parentIndex, path) + return true +} + +func (it *nodeIterator) seek(prefix []byte) error { + // The path we're looking for is the hex encoded key without terminator. + key := keybytesToHex(prefix) + key = key[:len(key)-1] + // Move forward until we're just before the closest match to key. + for { + state, parentIndex, path, err := it.peekSeek(key) + if err == errIteratorEnd { + return errIteratorEnd + } else if err != nil { + return seekError{prefix, err} + } else if bytes.Compare(path, key) >= 0 { + return nil + } + it.push(state, parentIndex, path) + } +} + +// init initializes the the iterator. +func (it *nodeIterator) init() (*nodeIteratorState, error) { + root := it.trie.Hash() + state := &nodeIteratorState{node: it.trie.root, index: -1} + if root != emptyRoot { + state.hash = root + } + return state, state.resolve(it, nil) +} + +// peek creates the next state of the iterator. +func (it *nodeIterator) peek(descend bool) (*nodeIteratorState, *int, []byte, error) { + // Initialize the iterator if we've just started. + if len(it.stack) == 0 { + state, err := it.init() + return state, nil, nil, err + } + if !descend { + // If we're skipping children, pop the current node first + it.pop() + } + + // Continue iteration to the next child + for len(it.stack) > 0 { + parent := it.stack[len(it.stack)-1] + ancestor := parent.hash + if (ancestor == common.Hash{}) { + ancestor = parent.parent + } + state, path, ok := it.nextChild(parent, ancestor) + if ok { + if err := state.resolve(it, path); err != nil { + return parent, &parent.index, path, err + } + return state, &parent.index, path, nil + } + // No more child nodes, move back up. + it.pop() + } + return nil, nil, nil, errIteratorEnd +} + +// peekSeek is like peek, but it also tries to skip resolving hashes by skipping +// over the siblings that do not lead towards the desired seek position. +func (it *nodeIterator) peekSeek(seekKey []byte) (*nodeIteratorState, *int, []byte, error) { + // Initialize the iterator if we've just started. + if len(it.stack) == 0 { + state, err := it.init() + return state, nil, nil, err + } + if !bytes.HasPrefix(seekKey, it.path) { + // If we're skipping children, pop the current node first + it.pop() + } + + // Continue iteration to the next child + for len(it.stack) > 0 { + parent := it.stack[len(it.stack)-1] + ancestor := parent.hash + if (ancestor == common.Hash{}) { + ancestor = parent.parent + } + state, path, ok := it.nextChildAt(parent, ancestor, seekKey) + if ok { + if err := state.resolve(it, path); err != nil { + return parent, &parent.index, path, err + } + return state, &parent.index, path, nil + } + // No more child nodes, move back up. + it.pop() + } + return nil, nil, nil, errIteratorEnd +} + +func (it *nodeIterator) resolveHash(hash hashNode, path []byte) (node, error) { + if it.resolver != nil { + if blob, err := it.resolver.Get(hash); err == nil && len(blob) > 0 { + if resolved, err := decodeNode(hash, blob); err == nil { + return resolved, nil + } + } + } + resolved, err := it.trie.resolveHash(hash, path) + return resolved, err +} + +func (st *nodeIteratorState) resolve(it *nodeIterator, path []byte) error { + if hash, ok := st.node.(hashNode); ok { + resolved, err := it.resolveHash(hash, path) + if err != nil { + return err + } + st.node = resolved + st.hash = common.BytesToHash(hash) + } + return nil +} + +func findChild(n *fullNode, index int, path []byte, ancestor common.Hash) (node, *nodeIteratorState, []byte, int) { + var ( + child node + state *nodeIteratorState + childPath []byte + ) + for ; index < len(n.Children); index++ { + if n.Children[index] != nil { + child = n.Children[index] + hash, _ := child.cache() + state = &nodeIteratorState{ + hash: common.BytesToHash(hash), + node: child, + parent: ancestor, + index: -1, + pathlen: len(path), + } + childPath = append(childPath, path...) + childPath = append(childPath, byte(index)) + return child, state, childPath, index + } + } + return nil, nil, nil, 0 +} + +func (it *nodeIterator) nextChild(parent *nodeIteratorState, ancestor common.Hash) (*nodeIteratorState, []byte, bool) { + switch node := parent.node.(type) { + case *fullNode: + // Full node, move to the first non-nil child. + if child, state, path, index := findChild(node, parent.index+1, it.path, ancestor); child != nil { + parent.index = index - 1 + return state, path, true + } + case *shortNode: + // Short node, return the pointer singleton child + if parent.index < 0 { + hash, _ := node.Val.cache() + state := &nodeIteratorState{ + hash: common.BytesToHash(hash), + node: node.Val, + parent: ancestor, + index: -1, + pathlen: len(it.path), + } + path := append(it.path, node.Key...) + return state, path, true + } + } + return parent, it.path, false +} + +// nextChildAt is similar to nextChild, except that it targets a child as close to the +// target key as possible, thus skipping siblings. +func (it *nodeIterator) nextChildAt(parent *nodeIteratorState, ancestor common.Hash, key []byte) (*nodeIteratorState, []byte, bool) { + switch n := parent.node.(type) { + case *fullNode: + // Full node, move to the first non-nil child before the desired key position + child, state, path, index := findChild(n, parent.index+1, it.path, ancestor) + if child == nil { + // No more children in this fullnode + return parent, it.path, false + } + // If the child we found is already past the seek position, just return it. + if bytes.Compare(path, key) >= 0 { + parent.index = index - 1 + return state, path, true + } + // The child is before the seek position. Try advancing + for { + nextChild, nextState, nextPath, nextIndex := findChild(n, index+1, it.path, ancestor) + // If we run out of children, or skipped past the target, return the + // previous one + if nextChild == nil || bytes.Compare(nextPath, key) >= 0 { + parent.index = index - 1 + return state, path, true + } + // We found a better child closer to the target + state, path, index = nextState, nextPath, nextIndex + } + case *shortNode: + // Short node, return the pointer singleton child + if parent.index < 0 { + hash, _ := n.Val.cache() + state := &nodeIteratorState{ + hash: common.BytesToHash(hash), + node: n.Val, + parent: ancestor, + index: -1, + pathlen: len(it.path), + } + path := append(it.path, n.Key...) + return state, path, true + } + } + return parent, it.path, false +} + +func (it *nodeIterator) push(state *nodeIteratorState, parentIndex *int, path []byte) { + it.path = path + it.stack = append(it.stack, state) + if parentIndex != nil { + *parentIndex++ + } +} + +func (it *nodeIterator) pop() { + parent := it.stack[len(it.stack)-1] + it.path = it.path[:parent.pathlen] + it.stack = it.stack[:len(it.stack)-1] +} + +func compareNodes(a, b NodeIterator) int { + if cmp := bytes.Compare(a.Path(), b.Path()); cmp != 0 { + return cmp + } + if a.Leaf() && !b.Leaf() { + return -1 + } else if b.Leaf() && !a.Leaf() { + return 1 + } + if cmp := bytes.Compare(a.Hash().Bytes(), b.Hash().Bytes()); cmp != 0 { + return cmp + } + if a.Leaf() && b.Leaf() { + return bytes.Compare(a.LeafBlob(), b.LeafBlob()) + } + return 0 +} + +type differenceIterator struct { + a, b NodeIterator // Nodes returned are those in b - a. + eof bool // Indicates a has run out of elements + count int // Number of nodes scanned on either trie +} + +// NewDifferenceIterator constructs a NodeIterator that iterates over elements in b that +// are not in a. Returns the iterator, and a pointer to an integer recording the number +// of nodes seen. +func NewDifferenceIterator(a, b NodeIterator) (NodeIterator, *int) { + a.Next(true) + it := &differenceIterator{ + a: a, + b: b, + } + return it, &it.count +} + +func (it *differenceIterator) Hash() common.Hash { + return it.b.Hash() +} + +func (it *differenceIterator) Parent() common.Hash { + return it.b.Parent() +} + +func (it *differenceIterator) Leaf() bool { + return it.b.Leaf() +} + +func (it *differenceIterator) LeafKey() []byte { + return it.b.LeafKey() +} + +func (it *differenceIterator) LeafBlob() []byte { + return it.b.LeafBlob() +} + +func (it *differenceIterator) LeafProof() [][]byte { + return it.b.LeafProof() +} + +func (it *differenceIterator) Path() []byte { + return it.b.Path() +} + +func (it *differenceIterator) AddResolver(resolver ethdb.KeyValueStore) { + panic("not implemented") +} + +func (it *differenceIterator) Next(bool) bool { + // Invariants: + // - We always advance at least one element in b. + // - At the start of this function, a's path is lexically greater than b's. + if !it.b.Next(true) { + return false + } + it.count++ + + if it.eof { + // a has reached eof, so we just return all elements from b + return true + } + + for { + switch compareNodes(it.a, it.b) { + case -1: + // b jumped past a; advance a + if !it.a.Next(true) { + it.eof = true + return true + } + it.count++ + case 1: + // b is before a + return true + case 0: + // a and b are identical; skip this whole subtree if the nodes have hashes + hasHash := it.a.Hash() == common.Hash{} + if !it.b.Next(hasHash) { + return false + } + it.count++ + if !it.a.Next(hasHash) { + it.eof = true + return true + } + it.count++ + } + } +} + +func (it *differenceIterator) Error() error { + if err := it.a.Error(); err != nil { + return err + } + return it.b.Error() +} + +type nodeIteratorHeap []NodeIterator + +func (h nodeIteratorHeap) Len() int { return len(h) } +func (h nodeIteratorHeap) Less(i, j int) bool { return compareNodes(h[i], h[j]) < 0 } +func (h nodeIteratorHeap) Swap(i, j int) { h[i], h[j] = h[j], h[i] } +func (h *nodeIteratorHeap) Push(x interface{}) { *h = append(*h, x.(NodeIterator)) } +func (h *nodeIteratorHeap) Pop() interface{} { + n := len(*h) + x := (*h)[n-1] + *h = (*h)[0 : n-1] + return x +} + +type unionIterator struct { + items *nodeIteratorHeap // Nodes returned are the union of the ones in these iterators + count int // Number of nodes scanned across all tries +} + +// NewUnionIterator constructs a NodeIterator that iterates over elements in the union +// of the provided NodeIterators. Returns the iterator, and a pointer to an integer +// recording the number of nodes visited. +func NewUnionIterator(iters []NodeIterator) (NodeIterator, *int) { + h := make(nodeIteratorHeap, len(iters)) + copy(h, iters) + heap.Init(&h) + + ui := &unionIterator{items: &h} + return ui, &ui.count +} + +func (it *unionIterator) Hash() common.Hash { + return (*it.items)[0].Hash() +} + +func (it *unionIterator) Parent() common.Hash { + return (*it.items)[0].Parent() +} + +func (it *unionIterator) Leaf() bool { + return (*it.items)[0].Leaf() +} + +func (it *unionIterator) LeafKey() []byte { + return (*it.items)[0].LeafKey() +} + +func (it *unionIterator) LeafBlob() []byte { + return (*it.items)[0].LeafBlob() +} + +func (it *unionIterator) LeafProof() [][]byte { + return (*it.items)[0].LeafProof() +} + +func (it *unionIterator) Path() []byte { + return (*it.items)[0].Path() +} + +func (it *unionIterator) AddResolver(resolver ethdb.KeyValueStore) { + panic("not implemented") +} + +// Next returns the next node in the union of tries being iterated over. +// +// It does this by maintaining a heap of iterators, sorted by the iteration +// order of their next elements, with one entry for each source trie. Each +// time Next() is called, it takes the least element from the heap to return, +// advancing any other iterators that also point to that same element. These +// iterators are called with descend=false, since we know that any nodes under +// these nodes will also be duplicates, found in the currently selected iterator. +// Whenever an iterator is advanced, it is pushed back into the heap if it still +// has elements remaining. +// +// In the case that descend=false - eg, we're asked to ignore all subnodes of the +// current node - we also advance any iterators in the heap that have the current +// path as a prefix. +func (it *unionIterator) Next(descend bool) bool { + if len(*it.items) == 0 { + return false + } + + // Get the next key from the union + least := heap.Pop(it.items).(NodeIterator) + + // Skip over other nodes as long as they're identical, or, if we're not descending, as + // long as they have the same prefix as the current node. + for len(*it.items) > 0 && ((!descend && bytes.HasPrefix((*it.items)[0].Path(), least.Path())) || compareNodes(least, (*it.items)[0]) == 0) { + skipped := heap.Pop(it.items).(NodeIterator) + // Skip the whole subtree if the nodes have hashes; otherwise just skip this node + if skipped.Next(skipped.Hash() == common.Hash{}) { + it.count++ + // If there are more elements, push the iterator back on the heap + heap.Push(it.items, skipped) + } + } + if least.Next(descend) { + it.count++ + heap.Push(it.items, least) + } + return len(*it.items) > 0 +} + +func (it *unionIterator) Error() error { + for i := 0; i < len(*it.items); i++ { + if err := (*it.items)[i].Error(); err != nil { + return err + } + } + return nil +} diff --git a/trie/iterator_test.go b/trie/iterator_test.go new file mode 100644 index 0000000000..d228f93917 --- /dev/null +++ b/trie/iterator_test.go @@ -0,0 +1,535 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "encoding/binary" + "fmt" + "math/rand" + "testing" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func TestIterator(t *testing.T) { + trie := newEmpty() + vals := []struct{ k, v string }{ + {"do", "verb"}, + {"ether", "wookiedoo"}, + {"horse", "stallion"}, + {"shaman", "horse"}, + {"doge", "coin"}, + {"dog", "puppy"}, + {"somethingveryoddindeedthis is", "myothernodedata"}, + } + all := make(map[string]string) + for _, val := range vals { + all[val.k] = val.v + trie.Update([]byte(val.k), []byte(val.v)) + } + trie.Commit(nil) + + found := make(map[string]string) + it := NewIterator(trie.NodeIterator(nil)) + for it.Next() { + found[string(it.Key)] = string(it.Value) + } + + for k, v := range all { + if found[k] != v { + t.Errorf("iterator value mismatch for %s: got %q want %q", k, found[k], v) + } + } +} + +type kv struct { + k, v []byte + t bool +} + +func TestIteratorLargeData(t *testing.T) { + trie := newEmpty() + vals := make(map[string]*kv) + + for i := byte(0); i < 255; i++ { + value := &kv{common.LeftPadBytes([]byte{i}, 32), []byte{i}, false} + value2 := &kv{common.LeftPadBytes([]byte{10, i}, 32), []byte{i}, false} + trie.Update(value.k, value.v) + trie.Update(value2.k, value2.v) + vals[string(value.k)] = value + vals[string(value2.k)] = value2 + } + + it := NewIterator(trie.NodeIterator(nil)) + for it.Next() { + vals[string(it.Key)].t = true + } + + var untouched []*kv + for _, value := range vals { + if !value.t { + untouched = append(untouched, value) + } + } + + if len(untouched) > 0 { + t.Errorf("Missed %d nodes", len(untouched)) + for _, value := range untouched { + t.Error(value) + } + } +} + +// Tests that the node iterator indeed walks over the entire database contents. +func TestNodeIteratorCoverage(t *testing.T) { + // Create some arbitrary test trie to iterate + db, trie, _ := makeTestTrie() + + // Gather all the node hashes found by the iterator + hashes := make(map[common.Hash]struct{}) + for it := trie.NodeIterator(nil); it.Next(true); { + if it.Hash() != (common.Hash{}) { + hashes[it.Hash()] = struct{}{} + } + } + // Cross check the hashes and the database itself + for hash := range hashes { + if _, err := db.Node(hash); err != nil { + t.Errorf("failed to retrieve reported node %x: %v", hash, err) + } + } + for hash, obj := range db.dirties { + if obj != nil && hash != (common.Hash{}) { + if _, ok := hashes[hash]; !ok { + t.Errorf("state entry not reported %x", hash) + } + } + } + it := db.diskdb.NewIterator(nil, nil) + for it.Next() { + key := it.Key() + if _, ok := hashes[common.BytesToHash(key)]; !ok { + t.Errorf("state entry not reported %x", key) + } + } + it.Release() +} + +type kvs struct{ k, v string } + +var testdata1 = []kvs{ + {"barb", "ba"}, + {"bard", "bc"}, + {"bars", "bb"}, + {"bar", "b"}, + {"fab", "z"}, + {"food", "ab"}, + {"foos", "aa"}, + {"foo", "a"}, +} + +var testdata2 = []kvs{ + {"aardvark", "c"}, + {"bar", "b"}, + {"barb", "bd"}, + {"bars", "be"}, + {"fab", "z"}, + {"foo", "a"}, + {"foos", "aa"}, + {"food", "ab"}, + {"jars", "d"}, +} + +func TestIteratorSeek(t *testing.T) { + trie := newEmpty() + for _, val := range testdata1 { + trie.Update([]byte(val.k), []byte(val.v)) + } + + // Seek to the middle. + it := NewIterator(trie.NodeIterator([]byte("fab"))) + if err := checkIteratorOrder(testdata1[4:], it); err != nil { + t.Fatal(err) + } + + // Seek to a non-existent key. + it = NewIterator(trie.NodeIterator([]byte("barc"))) + if err := checkIteratorOrder(testdata1[1:], it); err != nil { + t.Fatal(err) + } + + // Seek beyond the end. + it = NewIterator(trie.NodeIterator([]byte("z"))) + if err := checkIteratorOrder(nil, it); err != nil { + t.Fatal(err) + } +} + +func checkIteratorOrder(want []kvs, it *Iterator) error { + for it.Next() { + if len(want) == 0 { + return fmt.Errorf("didn't expect any more values, got key %q", it.Key) + } + if !bytes.Equal(it.Key, []byte(want[0].k)) { + return fmt.Errorf("wrong key: got %q, want %q", it.Key, want[0].k) + } + want = want[1:] + } + if len(want) > 0 { + return fmt.Errorf("iterator ended early, want key %q", want[0]) + } + return nil +} + +func TestDifferenceIterator(t *testing.T) { + triea := newEmpty() + for _, val := range testdata1 { + triea.Update([]byte(val.k), []byte(val.v)) + } + triea.Commit(nil) + + trieb := newEmpty() + for _, val := range testdata2 { + trieb.Update([]byte(val.k), []byte(val.v)) + } + trieb.Commit(nil) + + found := make(map[string]string) + di, _ := NewDifferenceIterator(triea.NodeIterator(nil), trieb.NodeIterator(nil)) + it := NewIterator(di) + for it.Next() { + found[string(it.Key)] = string(it.Value) + } + + all := []struct{ k, v string }{ + {"aardvark", "c"}, + {"barb", "bd"}, + {"bars", "be"}, + {"jars", "d"}, + } + for _, item := range all { + if found[item.k] != item.v { + t.Errorf("iterator value mismatch for %s: got %v want %v", item.k, found[item.k], item.v) + } + } + if len(found) != len(all) { + t.Errorf("iterator count mismatch: got %d values, want %d", len(found), len(all)) + } +} + +func TestUnionIterator(t *testing.T) { + triea := newEmpty() + for _, val := range testdata1 { + triea.Update([]byte(val.k), []byte(val.v)) + } + triea.Commit(nil) + + trieb := newEmpty() + for _, val := range testdata2 { + trieb.Update([]byte(val.k), []byte(val.v)) + } + trieb.Commit(nil) + + di, _ := NewUnionIterator([]NodeIterator{triea.NodeIterator(nil), trieb.NodeIterator(nil)}) + it := NewIterator(di) + + all := []struct{ k, v string }{ + {"aardvark", "c"}, + {"barb", "ba"}, + {"barb", "bd"}, + {"bard", "bc"}, + {"bars", "bb"}, + {"bars", "be"}, + {"bar", "b"}, + {"fab", "z"}, + {"food", "ab"}, + {"foos", "aa"}, + {"foo", "a"}, + {"jars", "d"}, + } + + for i, kv := range all { + if !it.Next() { + t.Errorf("Iterator ends prematurely at element %d", i) + } + if kv.k != string(it.Key) { + t.Errorf("iterator value mismatch for element %d: got key %s want %s", i, it.Key, kv.k) + } + if kv.v != string(it.Value) { + t.Errorf("iterator value mismatch for element %d: got value %s want %s", i, it.Value, kv.v) + } + } + if it.Next() { + t.Errorf("Iterator returned extra values.") + } +} + +func TestIteratorNoDups(t *testing.T) { + var tr Trie + for _, val := range testdata1 { + tr.Update([]byte(val.k), []byte(val.v)) + } + checkIteratorNoDups(t, tr.NodeIterator(nil), nil) +} + +// This test checks that nodeIterator.Next can be retried after inserting missing trie nodes. +func TestIteratorContinueAfterErrorDisk(t *testing.T) { testIteratorContinueAfterError(t, false) } +func TestIteratorContinueAfterErrorMemonly(t *testing.T) { testIteratorContinueAfterError(t, true) } + +func testIteratorContinueAfterError(t *testing.T, memonly bool) { + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + + tr, _ := New(common.Hash{}, triedb) + for _, val := range testdata1 { + tr.Update([]byte(val.k), []byte(val.v)) + } + tr.Commit(nil) + if !memonly { + triedb.Commit(tr.Hash(), true, nil) + } + wantNodeCount := checkIteratorNoDups(t, tr.NodeIterator(nil), nil) + + var ( + diskKeys [][]byte + memKeys []common.Hash + ) + if memonly { + memKeys = triedb.Nodes() + } else { + it := diskdb.NewIterator(nil, nil) + for it.Next() { + diskKeys = append(diskKeys, it.Key()) + } + it.Release() + } + for i := 0; i < 20; i++ { + // Create trie that will load all nodes from DB. + tr, _ := New(tr.Hash(), triedb) + + // Remove a random node from the database. It can't be the root node + // because that one is already loaded. + var ( + rkey common.Hash + rval []byte + robj *cachedNode + ) + for { + if memonly { + rkey = memKeys[rand.Intn(len(memKeys))] + } else { + copy(rkey[:], diskKeys[rand.Intn(len(diskKeys))]) + } + if rkey != tr.Hash() { + break + } + } + if memonly { + robj = triedb.dirties[rkey] + delete(triedb.dirties, rkey) + } else { + rval, _ = diskdb.Get(rkey[:]) + diskdb.Delete(rkey[:]) + } + // Iterate until the error is hit. + seen := make(map[string]bool) + it := tr.NodeIterator(nil) + checkIteratorNoDups(t, it, seen) + missing, ok := it.Error().(*MissingNodeError) + if !ok || missing.NodeHash != rkey { + t.Fatal("didn't hit missing node, got", it.Error()) + } + + // Add the node back and continue iteration. + if memonly { + triedb.dirties[rkey] = robj + } else { + diskdb.Put(rkey[:], rval) + } + checkIteratorNoDups(t, it, seen) + if it.Error() != nil { + t.Fatal("unexpected error", it.Error()) + } + if len(seen) != wantNodeCount { + t.Fatal("wrong node iteration count, got", len(seen), "want", wantNodeCount) + } + } +} + +// Similar to the test above, this one checks that failure to create nodeIterator at a +// certain key prefix behaves correctly when Next is called. The expectation is that Next +// should retry seeking before returning true for the first time. +func TestIteratorContinueAfterSeekErrorDisk(t *testing.T) { + testIteratorContinueAfterSeekError(t, false) +} + +func TestIteratorContinueAfterSeekErrorMemonly(t *testing.T) { + testIteratorContinueAfterSeekError(t, true) +} + +func testIteratorContinueAfterSeekError(t *testing.T, memonly bool) { + // Commit test trie to db, then remove the node containing "bars". + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + + ctr, _ := New(common.Hash{}, triedb) + for _, val := range testdata1 { + ctr.Update([]byte(val.k), []byte(val.v)) + } + root, _, _ := ctr.Commit(nil) + if !memonly { + triedb.Commit(root, true, nil) + } + barNodeHash := common.HexToHash("05041990364eb72fcb1127652ce40d8bab765f2bfe53225b1170d276cc101c2e") + var ( + barNodeBlob []byte + barNodeObj *cachedNode + ) + if memonly { + barNodeObj = triedb.dirties[barNodeHash] + delete(triedb.dirties, barNodeHash) + } else { + barNodeBlob, _ = diskdb.Get(barNodeHash[:]) + diskdb.Delete(barNodeHash[:]) + } + // Create a new iterator that seeks to "bars". Seeking can't proceed because + // the node is missing. + tr, _ := New(root, triedb) + it := tr.NodeIterator([]byte("bars")) + missing, ok := it.Error().(*MissingNodeError) + if !ok { + t.Fatal("want MissingNodeError, got", it.Error()) + } else if missing.NodeHash != barNodeHash { + t.Fatal("wrong node missing") + } + // Reinsert the missing node. + if memonly { + triedb.dirties[barNodeHash] = barNodeObj + } else { + diskdb.Put(barNodeHash[:], barNodeBlob) + } + // Check that iteration produces the right set of values. + if err := checkIteratorOrder(testdata1[2:], NewIterator(it)); err != nil { + t.Fatal(err) + } +} + +func checkIteratorNoDups(t *testing.T, it NodeIterator, seen map[string]bool) int { + if seen == nil { + seen = make(map[string]bool) + } + for it.Next(true) { + if seen[string(it.Path())] { + t.Fatalf("iterator visited node path %x twice", it.Path()) + } + seen[string(it.Path())] = true + } + return len(seen) +} + +type loggingDb struct { + getCount uint64 + backend ethdb.KeyValueStore +} + +func (l *loggingDb) Has(key []byte) (bool, error) { + return l.backend.Has(key) +} + +func (l *loggingDb) Get(key []byte) ([]byte, error) { + l.getCount++ + return l.backend.Get(key) +} + +func (l *loggingDb) Put(key []byte, value []byte) error { + return l.backend.Put(key, value) +} + +func (l *loggingDb) Delete(key []byte) error { + return l.backend.Delete(key) +} + +func (l *loggingDb) NewBatch() ethdb.Batch { + return l.backend.NewBatch() +} + +func (l *loggingDb) NewIterator(prefix []byte, start []byte) ethdb.Iterator { + fmt.Printf("NewIterator\n") + return l.backend.NewIterator(prefix, start) +} + +func (l *loggingDb) Stat(property string) (string, error) { + return l.backend.Stat(property) +} + +func (l *loggingDb) Compact(start []byte, limit []byte) error { + return l.backend.Compact(start, limit) +} + +func (l *loggingDb) Close() error { + return l.backend.Close() +} + +// makeLargeTestTrie create a sample test trie +func makeLargeTestTrie() (*Database, *SecureTrie, *loggingDb) { + // Create an empty trie + logDb := &loggingDb{0, memorydb.New()} + triedb := NewDatabase(logDb) + trie, _ := NewSecure(common.Hash{}, triedb) + + // Fill it with some arbitrary data + for i := 0; i < 10000; i++ { + key := make([]byte, 32) + val := make([]byte, 32) + binary.BigEndian.PutUint64(key, uint64(i)) + binary.BigEndian.PutUint64(val, uint64(i)) + key = crypto.Keccak256(key) + val = crypto.Keccak256(val) + trie.Update(key, val) + } + trie.Commit(nil) + // Return the generated trie + return triedb, trie, logDb +} + +// Tests that the node iterator indeed walks over the entire database contents. +func TestNodeIteratorLargeTrie(t *testing.T) { + // Create some arbitrary test trie to iterate + db, trie, logDb := makeLargeTestTrie() + db.Cap(0) // flush everything + // Do a seek operation + trie.NodeIterator(common.FromHex("0x77667766776677766778855885885885")) + // master: 24 get operations + // this pr: 5 get operations + if have, want := logDb.getCount, uint64(5); have != want { + t.Fatalf("Too many lookups during seek, have %d want %d", have, want) + } +} diff --git a/trie/node.go b/trie/node.go new file mode 100644 index 0000000000..162a0c6efd --- /dev/null +++ b/trie/node.go @@ -0,0 +1,235 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "fmt" + "io" + "strings" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/rlp" +) + +var indices = []string{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "[17]"} + +type node interface { + fstring(string) string + cache() (hashNode, bool) +} + +type ( + fullNode struct { + Children [17]node // Actual trie node data to encode/decode (needs custom encoder) + flags nodeFlag + } + shortNode struct { + Key []byte + Val node + flags nodeFlag + } + hashNode []byte + valueNode []byte +) + +// nilValueNode is used when collapsing internal trie nodes for hashing, since +// unset children need to serialize correctly. +var nilValueNode = valueNode(nil) + +// EncodeRLP encodes a full node into the consensus RLP format. +func (n *fullNode) EncodeRLP(w io.Writer) error { + var nodes [17]node + + for i, child := range &n.Children { + if child != nil { + nodes[i] = child + } else { + nodes[i] = nilValueNode + } + } + return rlp.Encode(w, nodes) +} + +func (n *fullNode) copy() *fullNode { copy := *n; return © } +func (n *shortNode) copy() *shortNode { copy := *n; return © } + +// nodeFlag contains caching-related metadata about a node. +type nodeFlag struct { + hash hashNode // cached hash of the node (may be nil) + dirty bool // whether the node has changes that must be written to the database +} + +func (n *fullNode) cache() (hashNode, bool) { return n.flags.hash, n.flags.dirty } +func (n *shortNode) cache() (hashNode, bool) { return n.flags.hash, n.flags.dirty } +func (n hashNode) cache() (hashNode, bool) { return nil, true } +func (n valueNode) cache() (hashNode, bool) { return nil, true } + +// Pretty printing. +func (n *fullNode) String() string { return n.fstring("") } +func (n *shortNode) String() string { return n.fstring("") } +func (n hashNode) String() string { return n.fstring("") } +func (n valueNode) String() string { return n.fstring("") } + +func (n *fullNode) fstring(ind string) string { + resp := fmt.Sprintf("[\n%s ", ind) + for i, node := range &n.Children { + if node == nil { + resp += fmt.Sprintf("%s: ", indices[i]) + } else { + resp += fmt.Sprintf("%s: %v", indices[i], node.fstring(ind+" ")) + } + } + return resp + fmt.Sprintf("\n%s] ", ind) +} +func (n *shortNode) fstring(ind string) string { + return fmt.Sprintf("{%x: %v} ", n.Key, n.Val.fstring(ind+" ")) +} +func (n hashNode) fstring(ind string) string { + return fmt.Sprintf("<%x> ", []byte(n)) +} +func (n valueNode) fstring(ind string) string { + return fmt.Sprintf("%x ", []byte(n)) +} + +func mustDecodeNode(hash, buf []byte) node { + n, err := decodeNode(hash, buf) + if err != nil { + panic(fmt.Sprintf("node %x: %v", hash, err)) + } + return n +} + +// decodeNode parses the RLP encoding of a trie node. +func decodeNode(hash, buf []byte) (node, error) { + if len(buf) == 0 { + return nil, io.ErrUnexpectedEOF + } + elems, _, err := rlp.SplitList(buf) + if err != nil { + return nil, fmt.Errorf("decode error: %v", err) + } + switch c, _ := rlp.CountValues(elems); c { + case 2: + n, err := decodeShort(hash, elems) + return n, wrapError(err, "short") + case 17: + n, err := decodeFull(hash, elems) + return n, wrapError(err, "full") + default: + return nil, fmt.Errorf("invalid number of list elements: %v", c) + } +} + +func decodeShort(hash, elems []byte) (node, error) { + kbuf, rest, err := rlp.SplitString(elems) + if err != nil { + return nil, err + } + flag := nodeFlag{hash: hash} + key := compactToHex(kbuf) + if hasTerm(key) { + // value node + val, _, err := rlp.SplitString(rest) + if err != nil { + return nil, fmt.Errorf("invalid value node: %v", err) + } + return &shortNode{key, append(valueNode{}, val...), flag}, nil + } + r, _, err := decodeRef(rest) + if err != nil { + return nil, wrapError(err, "val") + } + return &shortNode{key, r, flag}, nil +} + +func decodeFull(hash, elems []byte) (*fullNode, error) { + n := &fullNode{flags: nodeFlag{hash: hash}} + for i := 0; i < 16; i++ { + cld, rest, err := decodeRef(elems) + if err != nil { + return n, wrapError(err, fmt.Sprintf("[%d]", i)) + } + n.Children[i], elems = cld, rest + } + val, _, err := rlp.SplitString(elems) + if err != nil { + return n, err + } + if len(val) > 0 { + n.Children[16] = append(valueNode{}, val...) + } + return n, nil +} + +const hashLen = len(common.Hash{}) + +func decodeRef(buf []byte) (node, []byte, error) { + kind, val, rest, err := rlp.Split(buf) + if err != nil { + return nil, buf, err + } + switch { + case kind == rlp.List: + // 'embedded' node reference. The encoding must be smaller + // than a hash in order to be valid. + if size := len(buf) - len(rest); size > hashLen { + err := fmt.Errorf("oversized embedded node (size is %d bytes, want size < %d)", size, hashLen) + return nil, buf, err + } + n, err := decodeNode(nil, buf) + return n, rest, err + case kind == rlp.String && len(val) == 0: + // empty node + return nil, rest, nil + case kind == rlp.String && len(val) == 32: + return append(hashNode{}, val...), rest, nil + default: + return nil, nil, fmt.Errorf("invalid RLP string size %d (want 0 or 32)", len(val)) + } +} + +// wraps a decoding error with information about the path to the +// invalid child node (for debugging encoding issues). +type decodeError struct { + what error + stack []string +} + +func wrapError(err error, ctx string) error { + if err == nil { + return nil + } + if decErr, ok := err.(*decodeError); ok { + decErr.stack = append(decErr.stack, ctx) + return decErr + } + return &decodeError{err, []string{ctx}} +} + +func (err *decodeError) Error() string { + return fmt.Sprintf("%v (decode path: %s)", err.what, strings.Join(err.stack, "<-")) +} diff --git a/trie/node_test.go b/trie/node_test.go new file mode 100644 index 0000000000..246c74ac34 --- /dev/null +++ b/trie/node_test.go @@ -0,0 +1,104 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "testing" + + "github.com/ethereum/go-ethereum/rlp" +) + +func newTestFullNode(v []byte) []interface{} { + fullNodeData := []interface{}{} + for i := 0; i < 16; i++ { + k := bytes.Repeat([]byte{byte(i + 1)}, 32) + fullNodeData = append(fullNodeData, k) + } + fullNodeData = append(fullNodeData, v) + return fullNodeData +} + +func TestDecodeNestedNode(t *testing.T) { + fullNodeData := newTestFullNode([]byte("fullnode")) + + data := [][]byte{} + for i := 0; i < 16; i++ { + data = append(data, nil) + } + data = append(data, []byte("subnode")) + fullNodeData[15] = data + + buf := bytes.NewBuffer([]byte{}) + rlp.Encode(buf, fullNodeData) + + if _, err := decodeNode([]byte("testdecode"), buf.Bytes()); err != nil { + t.Fatalf("decode nested full node err: %v", err) + } +} + +func TestDecodeFullNodeWrongSizeChild(t *testing.T) { + fullNodeData := newTestFullNode([]byte("wrongsizechild")) + fullNodeData[0] = []byte("00") + buf := bytes.NewBuffer([]byte{}) + rlp.Encode(buf, fullNodeData) + + _, err := decodeNode([]byte("testdecode"), buf.Bytes()) + if _, ok := err.(*decodeError); !ok { + t.Fatalf("decodeNode returned wrong err: %v", err) + } +} + +func TestDecodeFullNodeWrongNestedFullNode(t *testing.T) { + fullNodeData := newTestFullNode([]byte("fullnode")) + + data := [][]byte{} + for i := 0; i < 16; i++ { + data = append(data, []byte("123456")) + } + data = append(data, []byte("subnode")) + fullNodeData[15] = data + + buf := bytes.NewBuffer([]byte{}) + rlp.Encode(buf, fullNodeData) + + _, err := decodeNode([]byte("testdecode"), buf.Bytes()) + if _, ok := err.(*decodeError); !ok { + t.Fatalf("decodeNode returned wrong err: %v", err) + } +} + +func TestDecodeFullNode(t *testing.T) { + fullNodeData := newTestFullNode([]byte("decodefullnode")) + buf := bytes.NewBuffer([]byte{}) + rlp.Encode(buf, fullNodeData) + + _, err := decodeNode([]byte("testdecode"), buf.Bytes()) + if err != nil { + t.Fatalf("decode full node err: %v", err) + } +} diff --git a/trie/proof.go b/trie/proof.go new file mode 100644 index 0000000000..cbe9ac5204 --- /dev/null +++ b/trie/proof.go @@ -0,0 +1,607 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "errors" + "fmt" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// Prove constructs a merkle proof for key. The result contains all encoded nodes +// on the path to the value at key. The value itself is also included in the last +// node and can be retrieved by verifying the proof. +// +// If the trie does not contain a value for key, the returned proof contains all +// nodes of the longest existing prefix of the key (at least the root node), ending +// with the node that proves the absence of the key. +func (t *Trie) Prove(key []byte, fromLevel uint, proofDb ethdb.KeyValueWriter) error { + // Collect all nodes on the path to key. + key = keybytesToHex(key) + var nodes []node + tn := t.root + for len(key) > 0 && tn != nil { + switch n := tn.(type) { + case *shortNode: + if len(key) < len(n.Key) || !bytes.Equal(n.Key, key[:len(n.Key)]) { + // The trie doesn't contain the key. + tn = nil + } else { + tn = n.Val + key = key[len(n.Key):] + } + nodes = append(nodes, n) + case *fullNode: + tn = n.Children[key[0]] + key = key[1:] + nodes = append(nodes, n) + case hashNode: + var err error + tn, err = t.resolveHash(n, nil) + if err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + return err + } + default: + panic(fmt.Sprintf("%T: invalid node: %v", tn, tn)) + } + } + hasher := newHasher(false) + defer returnHasherToPool(hasher) + + for i, n := range nodes { + if fromLevel > 0 { + fromLevel-- + continue + } + var hn node + n, hn = hasher.proofHash(n) + if hash, ok := hn.(hashNode); ok || i == 0 { + // If the node's database encoding is a hash (or is the + // root node), it becomes a proof element. + enc, _ := rlp.EncodeToBytes(n) + if !ok { + hash = hasher.hashData(enc) + } + proofDb.Put(hash, enc) + } + } + return nil +} + +// Prove constructs a merkle proof for key. The result contains all encoded nodes +// on the path to the value at key. The value itself is also included in the last +// node and can be retrieved by verifying the proof. +// +// If the trie does not contain a value for key, the returned proof contains all +// nodes of the longest existing prefix of the key (at least the root node), ending +// with the node that proves the absence of the key. +func (t *SecureTrie) Prove(key []byte, fromLevel uint, proofDb ethdb.KeyValueWriter) error { + return t.trie.Prove(key, fromLevel, proofDb) +} + +// VerifyProof checks merkle proofs. The given proof must contain the value for +// key in a trie with the given root hash. VerifyProof returns an error if the +// proof contains invalid trie nodes or the wrong value. +func VerifyProof(rootHash common.Hash, key []byte, proofDb ethdb.KeyValueReader) (value []byte, err error) { + key = keybytesToHex(key) + wantHash := rootHash + for i := 0; ; i++ { + buf, _ := proofDb.Get(wantHash[:]) + if buf == nil { + return nil, fmt.Errorf("proof node %d (hash %064x) missing", i, wantHash) + } + n, err := decodeNode(wantHash[:], buf) + if err != nil { + return nil, fmt.Errorf("bad proof node %d: %v", i, err) + } + keyrest, cld := get(n, key, true) + switch cld := cld.(type) { + case nil: + // The trie doesn't contain the key. + return nil, nil + case hashNode: + key = keyrest + copy(wantHash[:], cld) + case valueNode: + return cld, nil + } + } +} + +// proofToPath converts a merkle proof to trie node path. The main purpose of +// this function is recovering a node path from the merkle proof stream. All +// necessary nodes will be resolved and leave the remaining as hashnode. +// +// The given edge proof is allowed to be an existent or non-existent proof. +func proofToPath(rootHash common.Hash, root node, key []byte, proofDb ethdb.KeyValueReader, allowNonExistent bool) (node, []byte, error) { + // resolveNode retrieves and resolves trie node from merkle proof stream + resolveNode := func(hash common.Hash) (node, error) { + buf, _ := proofDb.Get(hash[:]) + if buf == nil { + return nil, fmt.Errorf("proof node (hash %064x) missing", hash) + } + n, err := decodeNode(hash[:], buf) + if err != nil { + return nil, fmt.Errorf("bad proof node %v", err) + } + return n, err + } + // If the root node is empty, resolve it first. + // Root node must be included in the proof. + if root == nil { + n, err := resolveNode(rootHash) + if err != nil { + return nil, nil, err + } + root = n + } + var ( + err error + child, parent node + keyrest []byte + valnode []byte + ) + key, parent = keybytesToHex(key), root + for { + keyrest, child = get(parent, key, false) + switch cld := child.(type) { + case nil: + // The trie doesn't contain the key. It's possible + // the proof is a non-existing proof, but at least + // we can prove all resolved nodes are correct, it's + // enough for us to prove range. + if allowNonExistent { + return root, nil, nil + } + return nil, nil, errors.New("the node is not contained in trie") + case *shortNode: + key, parent = keyrest, child // Already resolved + continue + case *fullNode: + key, parent = keyrest, child // Already resolved + continue + case hashNode: + child, err = resolveNode(common.BytesToHash(cld)) + if err != nil { + return nil, nil, err + } + case valueNode: + valnode = cld + } + // Link the parent and child. + switch pnode := parent.(type) { + case *shortNode: + pnode.Val = child + case *fullNode: + pnode.Children[key[0]] = child + default: + panic(fmt.Sprintf("%T: invalid node: %v", pnode, pnode)) + } + if len(valnode) > 0 { + return root, valnode, nil // The whole path is resolved + } + key, parent = keyrest, child + } +} + +// unsetInternal removes all internal node references(hashnode, embedded node). +// It should be called after a trie is constructed with two edge paths. Also +// the given boundary keys must be the one used to construct the edge paths. +// +// It's the key step for range proof. All visited nodes should be marked dirty +// since the node content might be modified. Besides it can happen that some +// fullnodes only have one child which is disallowed. But if the proof is valid, +// the missing children will be filled, otherwise it will be thrown anyway. +// +// Note we have the assumption here the given boundary keys are different +// and right is larger than left. +func unsetInternal(n node, left []byte, right []byte) (bool, error) { + left, right = keybytesToHex(left), keybytesToHex(right) + + // Step down to the fork point. There are two scenarios can happen: + // - the fork point is a shortnode: either the key of left proof or + // right proof doesn't match with shortnode's key. + // - the fork point is a fullnode: both two edge proofs are allowed + // to point to a non-existent key. + var ( + pos = 0 + parent node + + // fork indicator, 0 means no fork, -1 means proof is less, 1 means proof is greater + shortForkLeft, shortForkRight int + ) +findFork: + for { + switch rn := (n).(type) { + case *shortNode: + rn.flags = nodeFlag{dirty: true} + + // If either the key of left proof or right proof doesn't match with + // shortnode, stop here and the forkpoint is the shortnode. + if len(left)-pos < len(rn.Key) { + shortForkLeft = bytes.Compare(left[pos:], rn.Key) + } else { + shortForkLeft = bytes.Compare(left[pos:pos+len(rn.Key)], rn.Key) + } + if len(right)-pos < len(rn.Key) { + shortForkRight = bytes.Compare(right[pos:], rn.Key) + } else { + shortForkRight = bytes.Compare(right[pos:pos+len(rn.Key)], rn.Key) + } + if shortForkLeft != 0 || shortForkRight != 0 { + break findFork + } + parent = n + n, pos = rn.Val, pos+len(rn.Key) + case *fullNode: + rn.flags = nodeFlag{dirty: true} + + // If either the node pointed by left proof or right proof is nil, + // stop here and the forkpoint is the fullnode. + leftnode, rightnode := rn.Children[left[pos]], rn.Children[right[pos]] + if leftnode == nil || rightnode == nil || leftnode != rightnode { + break findFork + } + parent = n + n, pos = rn.Children[left[pos]], pos+1 + default: + panic(fmt.Sprintf("%T: invalid node: %v", n, n)) + } + } + switch rn := n.(type) { + case *shortNode: + // There can have these five scenarios: + // - both proofs are less than the trie path => no valid range + // - both proofs are greater than the trie path => no valid range + // - left proof is less and right proof is greater => valid range, unset the shortnode entirely + // - left proof points to the shortnode, but right proof is greater + // - right proof points to the shortnode, but left proof is less + if shortForkLeft == -1 && shortForkRight == -1 { + return false, errors.New("empty range") + } + if shortForkLeft == 1 && shortForkRight == 1 { + return false, errors.New("empty range") + } + if shortForkLeft != 0 && shortForkRight != 0 { + // The fork point is root node, unset the entire trie + if parent == nil { + return true, nil + } + parent.(*fullNode).Children[left[pos-1]] = nil + return false, nil + } + // Only one proof points to non-existent key. + if shortForkRight != 0 { + if _, ok := rn.Val.(valueNode); ok { + // The fork point is root node, unset the entire trie + if parent == nil { + return true, nil + } + parent.(*fullNode).Children[left[pos-1]] = nil + return false, nil + } + return false, unset(rn, rn.Val, left[pos:], len(rn.Key), false) + } + if shortForkLeft != 0 { + if _, ok := rn.Val.(valueNode); ok { + // The fork point is root node, unset the entire trie + if parent == nil { + return true, nil + } + parent.(*fullNode).Children[right[pos-1]] = nil + return false, nil + } + return false, unset(rn, rn.Val, right[pos:], len(rn.Key), true) + } + return false, nil + case *fullNode: + // unset all internal nodes in the forkpoint + for i := left[pos] + 1; i < right[pos]; i++ { + rn.Children[i] = nil + } + if err := unset(rn, rn.Children[left[pos]], left[pos:], 1, false); err != nil { + return false, err + } + if err := unset(rn, rn.Children[right[pos]], right[pos:], 1, true); err != nil { + return false, err + } + return false, nil + default: + panic(fmt.Sprintf("%T: invalid node: %v", n, n)) + } +} + +// unset removes all internal node references either the left most or right most. +// It can meet these scenarios: +// +// - The given path is existent in the trie, unset the associated nodes with the +// specific direction +// - The given path is non-existent in the trie +// - the fork point is a fullnode, the corresponding child pointed by path +// is nil, return +// - the fork point is a shortnode, the shortnode is included in the range, +// keep the entire branch and return. +// - the fork point is a shortnode, the shortnode is excluded in the range, +// unset the entire branch. +func unset(parent node, child node, key []byte, pos int, removeLeft bool) error { + switch cld := child.(type) { + case *fullNode: + if removeLeft { + for i := 0; i < int(key[pos]); i++ { + cld.Children[i] = nil + } + cld.flags = nodeFlag{dirty: true} + } else { + for i := key[pos] + 1; i < 16; i++ { + cld.Children[i] = nil + } + cld.flags = nodeFlag{dirty: true} + } + return unset(cld, cld.Children[key[pos]], key, pos+1, removeLeft) + case *shortNode: + if len(key[pos:]) < len(cld.Key) || !bytes.Equal(cld.Key, key[pos:pos+len(cld.Key)]) { + // Find the fork point, it's an non-existent branch. + if removeLeft { + if bytes.Compare(cld.Key, key[pos:]) < 0 { + // The key of fork shortnode is less than the path + // (it belongs to the range), unset the entrie + // branch. The parent must be a fullnode. + fn := parent.(*fullNode) + fn.Children[key[pos-1]] = nil + } else { + // The key of fork shortnode is greater than the + // path(it doesn't belong to the range), keep + // it with the cached hash available. + } + } else { + if bytes.Compare(cld.Key, key[pos:]) > 0 { + // The key of fork shortnode is greater than the + // path(it belongs to the range), unset the entrie + // branch. The parent must be a fullnode. + fn := parent.(*fullNode) + fn.Children[key[pos-1]] = nil + } else { + // The key of fork shortnode is less than the + // path(it doesn't belong to the range), keep + // it with the cached hash available. + } + } + return nil + } + if _, ok := cld.Val.(valueNode); ok { + fn := parent.(*fullNode) + fn.Children[key[pos-1]] = nil + return nil + } + cld.flags = nodeFlag{dirty: true} + return unset(cld, cld.Val, key, pos+len(cld.Key), removeLeft) + case nil: + // If the node is nil, then it's a child of the fork point + // fullnode(it's a non-existent branch). + return nil + default: + panic("it shouldn't happen") // hashNode, valueNode + } +} + +// hasRightElement returns the indicator whether there exists more elements +// in the right side of the given path. The given path can point to an existent +// key or a non-existent one. This function has the assumption that the whole +// path should already be resolved. +func hasRightElement(node node, key []byte) bool { + pos, key := 0, keybytesToHex(key) + for node != nil { + switch rn := node.(type) { + case *fullNode: + for i := key[pos] + 1; i < 16; i++ { + if rn.Children[i] != nil { + return true + } + } + node, pos = rn.Children[key[pos]], pos+1 + case *shortNode: + if len(key)-pos < len(rn.Key) || !bytes.Equal(rn.Key, key[pos:pos+len(rn.Key)]) { + return bytes.Compare(rn.Key, key[pos:]) > 0 + } + node, pos = rn.Val, pos+len(rn.Key) + case valueNode: + return false // We have resolved the whole path + default: + panic(fmt.Sprintf("%T: invalid node: %v", node, node)) // hashnode + } + } + return false +} + +// VerifyRangeProof checks whether the given leaf nodes and edge proof +// can prove the given trie leaves range is matched with the specific root. +// Besides, the range should be consecutive (no gap inside) and monotonic +// increasing. +// +// Note the given proof actually contains two edge proofs. Both of them can +// be non-existent proofs. For example the first proof is for a non-existent +// key 0x03, the last proof is for a non-existent key 0x10. The given batch +// leaves are [0x04, 0x05, .. 0x09]. It's still feasible to prove the given +// batch is valid. +// +// The firstKey is paired with firstProof, not necessarily the same as keys[0] +// (unless firstProof is an existent proof). Similarly, lastKey and lastProof +// are paired. +// +// Expect the normal case, this function can also be used to verify the following +// range proofs: +// +// - All elements proof. In this case the proof can be nil, but the range should +// be all the leaves in the trie. +// +// - One element proof. In this case no matter the edge proof is a non-existent +// proof or not, we can always verify the correctness of the proof. +// +// - Zero element proof. In this case a single non-existent proof is enough to prove. +// Besides, if there are still some other leaves available on the right side, then +// an error will be returned. +// +// Except returning the error to indicate the proof is valid or not, the function will +// also return a flag to indicate whether there exists more accounts/slots in the trie. +// +// Note: This method does not verify that the proof is of minimal form. If the input +// proofs are 'bloated' with neighbour leaves or random data, aside from the 'useful' +// data, then the proof will still be accepted. +func VerifyRangeProof(rootHash common.Hash, firstKey []byte, lastKey []byte, keys [][]byte, values [][]byte, proof ethdb.KeyValueReader) (bool, error) { + if len(keys) != len(values) { + return false, fmt.Errorf("inconsistent proof data, keys: %d, values: %d", len(keys), len(values)) + } + // Ensure the received batch is monotonic increasing. + for i := 0; i < len(keys)-1; i++ { + if bytes.Compare(keys[i], keys[i+1]) >= 0 { + return false, errors.New("range is not monotonically increasing") + } + } + // Special case, there is no edge proof at all. The given range is expected + // to be the whole leaf-set in the trie. + if proof == nil { + tr := NewStackTrie(nil) + for index, key := range keys { + tr.TryUpdate(key, values[index]) + } + if have, want := tr.Hash(), rootHash; have != want { + return false, fmt.Errorf("invalid proof, want hash %x, got %x", want, have) + } + return false, nil // No more elements + } + // Special case, there is a provided edge proof but zero key/value + // pairs, ensure there are no more accounts / slots in the trie. + if len(keys) == 0 { + root, val, err := proofToPath(rootHash, nil, firstKey, proof, true) + if err != nil { + return false, err + } + if val != nil || hasRightElement(root, firstKey) { + return false, errors.New("more entries available") + } + return hasRightElement(root, firstKey), nil + } + // Special case, there is only one element and two edge keys are same. + // In this case, we can't construct two edge paths. So handle it here. + if len(keys) == 1 && bytes.Equal(firstKey, lastKey) { + root, val, err := proofToPath(rootHash, nil, firstKey, proof, false) + if err != nil { + return false, err + } + if !bytes.Equal(firstKey, keys[0]) { + return false, errors.New("correct proof but invalid key") + } + if !bytes.Equal(val, values[0]) { + return false, errors.New("correct proof but invalid data") + } + return hasRightElement(root, firstKey), nil + } + // Ok, in all other cases, we require two edge paths available. + // First check the validity of edge keys. + if bytes.Compare(firstKey, lastKey) >= 0 { + return false, errors.New("invalid edge keys") + } + // todo(rjl493456442) different length edge keys should be supported + if len(firstKey) != len(lastKey) { + return false, errors.New("inconsistent edge keys") + } + // Convert the edge proofs to edge trie paths. Then we can + // have the same tree architecture with the original one. + // For the first edge proof, non-existent proof is allowed. + root, _, err := proofToPath(rootHash, nil, firstKey, proof, true) + if err != nil { + return false, err + } + // Pass the root node here, the second path will be merged + // with the first one. For the last edge proof, non-existent + // proof is also allowed. + root, _, err = proofToPath(rootHash, root, lastKey, proof, true) + if err != nil { + return false, err + } + // Remove all internal references. All the removed parts should + // be re-filled(or re-constructed) by the given leaves range. + empty, err := unsetInternal(root, firstKey, lastKey) + if err != nil { + return false, err + } + // Rebuild the trie with the leaf stream, the shape of trie + // should be same with the original one. + tr := &Trie{root: root, db: NewDatabase(memorydb.New())} + if empty { + tr.root = nil + } + for index, key := range keys { + tr.TryUpdate(key, values[index]) + } + if tr.Hash() != rootHash { + return false, fmt.Errorf("invalid proof, want hash %x, got %x", rootHash, tr.Hash()) + } + return hasRightElement(root, keys[len(keys)-1]), nil +} + +// get returns the child of the given node. Return nil if the +// node with specified key doesn't exist at all. +// +// There is an additional flag `skipResolved`. If it's set then +// all resolved nodes won't be returned. +func get(tn node, key []byte, skipResolved bool) ([]byte, node) { + for { + switch n := tn.(type) { + case *shortNode: + if len(key) < len(n.Key) || !bytes.Equal(n.Key, key[:len(n.Key)]) { + return nil, nil + } + tn = n.Val + key = key[len(n.Key):] + if !skipResolved { + return key, tn + } + case *fullNode: + tn = n.Children[key[0]] + key = key[1:] + if !skipResolved { + return key, tn + } + case hashNode: + return key, n + case nil: + return key, nil + case valueNode: + return nil, n + default: + panic(fmt.Sprintf("%T: invalid node: %v", tn, tn)) + } + } +} diff --git a/trie/proof_test.go b/trie/proof_test.go new file mode 100644 index 0000000000..0cbbed55df --- /dev/null +++ b/trie/proof_test.go @@ -0,0 +1,1000 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + crand "crypto/rand" + "encoding/binary" + mrand "math/rand" + "sort" + "testing" + "time" + + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func init() { + mrand.Seed(time.Now().Unix()) +} + +// makeProvers creates Merkle trie provers based on different implementations to +// test all variations. +func makeProvers(trie *Trie) []func(key []byte) *memorydb.Database { + var provers []func(key []byte) *memorydb.Database + + // Create a direct trie based Merkle prover + provers = append(provers, func(key []byte) *memorydb.Database { + proof := memorydb.New() + trie.Prove(key, 0, proof) + return proof + }) + // Create a leaf iterator based Merkle prover + provers = append(provers, func(key []byte) *memorydb.Database { + proof := memorydb.New() + if it := NewIterator(trie.NodeIterator(key)); it.Next() && bytes.Equal(key, it.Key) { + for _, p := range it.Prove() { + proof.Put(crypto.Keccak256(p), p) + } + } + return proof + }) + return provers +} + +func TestProof(t *testing.T) { + trie, vals := randomTrie(500) + root := trie.Hash() + for i, prover := range makeProvers(trie) { + for _, kv := range vals { + proof := prover(kv.k) + if proof == nil { + t.Fatalf("prover %d: missing key %x while constructing proof", i, kv.k) + } + val, err := VerifyProof(root, kv.k, proof) + if err != nil { + t.Fatalf("prover %d: failed to verify proof for key %x: %v\nraw proof: %x", i, kv.k, err, proof) + } + if !bytes.Equal(val, kv.v) { + t.Fatalf("prover %d: verified value mismatch for key %x: have %x, want %x", i, kv.k, val, kv.v) + } + } + } +} + +func TestOneElementProof(t *testing.T) { + trie := new(Trie) + updateString(trie, "k", "v") + for i, prover := range makeProvers(trie) { + proof := prover([]byte("k")) + if proof == nil { + t.Fatalf("prover %d: nil proof", i) + } + if proof.Len() != 1 { + t.Errorf("prover %d: proof should have one element", i) + } + val, err := VerifyProof(trie.Hash(), []byte("k"), proof) + if err != nil { + t.Fatalf("prover %d: failed to verify proof: %v\nraw proof: %x", i, err, proof) + } + if !bytes.Equal(val, []byte("v")) { + t.Fatalf("prover %d: verified value mismatch: have %x, want 'k'", i, val) + } + } +} + +func TestBadProof(t *testing.T) { + trie, vals := randomTrie(800) + root := trie.Hash() + for i, prover := range makeProvers(trie) { + for _, kv := range vals { + proof := prover(kv.k) + if proof == nil { + t.Fatalf("prover %d: nil proof", i) + } + it := proof.NewIterator(nil, nil) + for i, d := 0, mrand.Intn(proof.Len()); i <= d; i++ { + it.Next() + } + key := it.Key() + val, _ := proof.Get(key) + proof.Delete(key) + it.Release() + + mutateByte(val) + proof.Put(crypto.Keccak256(val), val) + + if _, err := VerifyProof(root, kv.k, proof); err == nil { + t.Fatalf("prover %d: expected proof to fail for key %x", i, kv.k) + } + } + } +} + +// Tests that missing keys can also be proven. The test explicitly uses a single +// entry trie and checks for missing keys both before and after the single entry. +func TestMissingKeyProof(t *testing.T) { + trie := new(Trie) + updateString(trie, "k", "v") + + for i, key := range []string{"a", "j", "l", "z"} { + proof := memorydb.New() + trie.Prove([]byte(key), 0, proof) + + if proof.Len() != 1 { + t.Errorf("test %d: proof should have one element", i) + } + val, err := VerifyProof(trie.Hash(), []byte(key), proof) + if err != nil { + t.Fatalf("test %d: failed to verify proof: %v\nraw proof: %x", i, err, proof) + } + if val != nil { + t.Fatalf("test %d: verified value mismatch: have %x, want nil", i, val) + } + } +} + +type entrySlice []*kv + +func (p entrySlice) Len() int { return len(p) } +func (p entrySlice) Less(i, j int) bool { return bytes.Compare(p[i].k, p[j].k) < 0 } +func (p entrySlice) Swap(i, j int) { p[i], p[j] = p[j], p[i] } + +// TestRangeProof tests normal range proof with both edge proofs +// as the existent proof. The test cases are generated randomly. +func TestRangeProof(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + for i := 0; i < 500; i++ { + start := mrand.Intn(len(entries)) + end := mrand.Intn(len(entries)-start) + start + 1 + + proof := memorydb.New() + if err := trie.Prove(entries[start].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[end-1].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + var keys [][]byte + var vals [][]byte + for i := start; i < end; i++ { + keys = append(keys, entries[i].k) + vals = append(vals, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), keys[0], keys[len(keys)-1], keys, vals, proof) + if err != nil { + t.Fatalf("Case %d(%d->%d) expect no error, got %v", i, start, end-1, err) + } + } +} + +// TestRangeProof tests normal range proof with two non-existent proofs. +// The test cases are generated randomly. +func TestRangeProofWithNonExistentProof(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + for i := 0; i < 500; i++ { + start := mrand.Intn(len(entries)) + end := mrand.Intn(len(entries)-start) + start + 1 + proof := memorydb.New() + + // Short circuit if the decreased key is same with the previous key + first := decreseKey(common.CopyBytes(entries[start].k)) + if start != 0 && bytes.Equal(first, entries[start-1].k) { + continue + } + // Short circuit if the decreased key is underflow + if bytes.Compare(first, entries[start].k) > 0 { + continue + } + // Short circuit if the increased key is same with the next key + last := increseKey(common.CopyBytes(entries[end-1].k)) + if end != len(entries) && bytes.Equal(last, entries[end].k) { + continue + } + // Short circuit if the increased key is overflow + if bytes.Compare(last, entries[end-1].k) < 0 { + continue + } + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + var keys [][]byte + var vals [][]byte + for i := start; i < end; i++ { + keys = append(keys, entries[i].k) + vals = append(vals, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), first, last, keys, vals, proof) + if err != nil { + t.Fatalf("Case %d(%d->%d) expect no error, got %v", i, start, end-1, err) + } + } + // Special case, two edge proofs for two edge key. + proof := memorydb.New() + first := common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000").Bytes() + last := common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").Bytes() + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + var k [][]byte + var v [][]byte + for i := 0; i < len(entries); i++ { + k = append(k, entries[i].k) + v = append(v, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), first, last, k, v, proof) + if err != nil { + t.Fatal("Failed to verify whole rang with non-existent edges") + } +} + +// TestRangeProofWithInvalidNonExistentProof tests such scenarios: +// - There exists a gap between the first element and the left edge proof +// - There exists a gap between the last element and the right edge proof +func TestRangeProofWithInvalidNonExistentProof(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + // Case 1 + start, end := 100, 200 + first := decreseKey(common.CopyBytes(entries[start].k)) + + proof := memorydb.New() + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[end-1].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + start = 105 // Gap created + k := make([][]byte, 0) + v := make([][]byte, 0) + for i := start; i < end; i++ { + k = append(k, entries[i].k) + v = append(v, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), first, k[len(k)-1], k, v, proof) + if err == nil { + t.Fatalf("Expected to detect the error, got nil") + } + + // Case 2 + start, end = 100, 200 + last := increseKey(common.CopyBytes(entries[end-1].k)) + proof = memorydb.New() + if err := trie.Prove(entries[start].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + end = 195 // Capped slice + k = make([][]byte, 0) + v = make([][]byte, 0) + for i := start; i < end; i++ { + k = append(k, entries[i].k) + v = append(v, entries[i].v) + } + _, err = VerifyRangeProof(trie.Hash(), k[0], last, k, v, proof) + if err == nil { + t.Fatalf("Expected to detect the error, got nil") + } +} + +// TestOneElementRangeProof tests the proof with only one +// element. The first edge proof can be existent one or +// non-existent one. +func TestOneElementRangeProof(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + // One element with existent edge proof, both edge proofs + // point to the SAME key. + start := 1000 + proof := memorydb.New() + if err := trie.Prove(entries[start].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + _, err := VerifyRangeProof(trie.Hash(), entries[start].k, entries[start].k, [][]byte{entries[start].k}, [][]byte{entries[start].v}, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + + // One element with left non-existent edge proof + start = 1000 + first := decreseKey(common.CopyBytes(entries[start].k)) + proof = memorydb.New() + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[start].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err = VerifyRangeProof(trie.Hash(), first, entries[start].k, [][]byte{entries[start].k}, [][]byte{entries[start].v}, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + + // One element with right non-existent edge proof + start = 1000 + last := increseKey(common.CopyBytes(entries[start].k)) + proof = memorydb.New() + if err := trie.Prove(entries[start].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err = VerifyRangeProof(trie.Hash(), entries[start].k, last, [][]byte{entries[start].k}, [][]byte{entries[start].v}, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + + // One element with two non-existent edge proofs + start = 1000 + first, last = decreseKey(common.CopyBytes(entries[start].k)), increseKey(common.CopyBytes(entries[start].k)) + proof = memorydb.New() + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err = VerifyRangeProof(trie.Hash(), first, last, [][]byte{entries[start].k}, [][]byte{entries[start].v}, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + + // Test the mini trie with only a single element. + tinyTrie := new(Trie) + entry := &kv{randBytes(32), randBytes(20), false} + tinyTrie.Update(entry.k, entry.v) + + first = common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000").Bytes() + last = entry.k + proof = memorydb.New() + if err := tinyTrie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := tinyTrie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err = VerifyRangeProof(tinyTrie.Hash(), first, last, [][]byte{entry.k}, [][]byte{entry.v}, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } +} + +// TestAllElementsProof tests the range proof with all elements. +// The edge proofs can be nil. +func TestAllElementsProof(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + var k [][]byte + var v [][]byte + for i := 0; i < len(entries); i++ { + k = append(k, entries[i].k) + v = append(v, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), nil, nil, k, v, nil) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + + // With edge proofs, it should still work. + proof := memorydb.New() + if err := trie.Prove(entries[0].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[len(entries)-1].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err = VerifyRangeProof(trie.Hash(), k[0], k[len(k)-1], k, v, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + + // Even with non-existent edge proofs, it should still work. + proof = memorydb.New() + first := common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000").Bytes() + last := common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").Bytes() + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err = VerifyRangeProof(trie.Hash(), first, last, k, v, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } +} + +// TestSingleSideRangeProof tests the range starts from zero. +func TestSingleSideRangeProof(t *testing.T) { + for i := 0; i < 64; i++ { + trie := new(Trie) + var entries entrySlice + for i := 0; i < 4096; i++ { + value := &kv{randBytes(32), randBytes(20), false} + trie.Update(value.k, value.v) + entries = append(entries, value) + } + sort.Sort(entries) + + cases := []int{0, 1, 50, 100, 1000, 2000, len(entries) - 1} + for _, pos := range cases { + proof := memorydb.New() + if err := trie.Prove(common.Hash{}.Bytes(), 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[pos].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + k := make([][]byte, 0) + v := make([][]byte, 0) + for i := 0; i <= pos; i++ { + k = append(k, entries[i].k) + v = append(v, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), common.Hash{}.Bytes(), k[len(k)-1], k, v, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + } + } +} + +// TestReverseSingleSideRangeProof tests the range ends with 0xffff...fff. +func TestReverseSingleSideRangeProof(t *testing.T) { + for i := 0; i < 64; i++ { + trie := new(Trie) + var entries entrySlice + for i := 0; i < 4096; i++ { + value := &kv{randBytes(32), randBytes(20), false} + trie.Update(value.k, value.v) + entries = append(entries, value) + } + sort.Sort(entries) + + cases := []int{0, 1, 50, 100, 1000, 2000, len(entries) - 1} + for _, pos := range cases { + proof := memorydb.New() + if err := trie.Prove(entries[pos].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + last := common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff") + if err := trie.Prove(last.Bytes(), 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + k := make([][]byte, 0) + v := make([][]byte, 0) + for i := pos; i < len(entries); i++ { + k = append(k, entries[i].k) + v = append(v, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), k[0], last.Bytes(), k, v, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + } + } +} + +// TestBadRangeProof tests a few cases which the proof is wrong. +// The prover is expected to detect the error. +func TestBadRangeProof(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + for i := 0; i < 500; i++ { + start := mrand.Intn(len(entries)) + end := mrand.Intn(len(entries)-start) + start + 1 + proof := memorydb.New() + if err := trie.Prove(entries[start].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[end-1].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + var keys [][]byte + var vals [][]byte + for i := start; i < end; i++ { + keys = append(keys, entries[i].k) + vals = append(vals, entries[i].v) + } + first, last := keys[0], keys[len(keys)-1] + testcase := mrand.Intn(6) + var index int + switch testcase { + case 0: + // Modified key + index = mrand.Intn(end - start) + keys[index] = randBytes(32) // In theory it can't be same + case 1: + // Modified val + index = mrand.Intn(end - start) + vals[index] = randBytes(20) // In theory it can't be same + case 2: + // Gapped entry slice + index = mrand.Intn(end - start) + if (index == 0 && start < 100) || (index == end-start-1 && end <= 100) { + continue + } + keys = append(keys[:index], keys[index+1:]...) + vals = append(vals[:index], vals[index+1:]...) + case 3: + // Out of order + index1 := mrand.Intn(end - start) + index2 := mrand.Intn(end - start) + if index1 == index2 { + continue + } + keys[index1], keys[index2] = keys[index2], keys[index1] + vals[index1], vals[index2] = vals[index2], vals[index1] + case 4: + // Set random key to nil, do nothing + index = mrand.Intn(end - start) + keys[index] = nil + case 5: + // Set random value to nil, deletion + index = mrand.Intn(end - start) + vals[index] = nil + } + _, err := VerifyRangeProof(trie.Hash(), first, last, keys, vals, proof) + if err == nil { + t.Fatalf("%d Case %d index %d range: (%d->%d) expect error, got nil", i, testcase, index, start, end-1) + } + } +} + +// TestGappedRangeProof focuses on the small trie with embedded nodes. +// If the gapped node is embedded in the trie, it should be detected too. +func TestGappedRangeProof(t *testing.T) { + trie := new(Trie) + var entries []*kv // Sorted entries + for i := byte(0); i < 10; i++ { + value := &kv{common.LeftPadBytes([]byte{i}, 32), []byte{i}, false} + trie.Update(value.k, value.v) + entries = append(entries, value) + } + first, last := 2, 8 + proof := memorydb.New() + if err := trie.Prove(entries[first].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[last-1].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + var keys [][]byte + var vals [][]byte + for i := first; i < last; i++ { + if i == (first+last)/2 { + continue + } + keys = append(keys, entries[i].k) + vals = append(vals, entries[i].v) + } + _, err := VerifyRangeProof(trie.Hash(), keys[0], keys[len(keys)-1], keys, vals, proof) + if err == nil { + t.Fatal("expect error, got nil") + } +} + +// TestSameSideProofs tests the element is not in the range covered by proofs +func TestSameSideProofs(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + pos := 1000 + first := decreseKey(common.CopyBytes(entries[pos].k)) + first = decreseKey(first) + last := decreseKey(common.CopyBytes(entries[pos].k)) + + proof := memorydb.New() + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err := VerifyRangeProof(trie.Hash(), first, last, [][]byte{entries[pos].k}, [][]byte{entries[pos].v}, proof) + if err == nil { + t.Fatalf("Expected error, got nil") + } + + first = increseKey(common.CopyBytes(entries[pos].k)) + last = increseKey(common.CopyBytes(entries[pos].k)) + last = increseKey(last) + + proof = memorydb.New() + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(last, 0, proof); err != nil { + t.Fatalf("Failed to prove the last node %v", err) + } + _, err = VerifyRangeProof(trie.Hash(), first, last, [][]byte{entries[pos].k}, [][]byte{entries[pos].v}, proof) + if err == nil { + t.Fatalf("Expected error, got nil") + } +} + +func TestHasRightElement(t *testing.T) { + trie := new(Trie) + var entries entrySlice + for i := 0; i < 4096; i++ { + value := &kv{randBytes(32), randBytes(20), false} + trie.Update(value.k, value.v) + entries = append(entries, value) + } + sort.Sort(entries) + + cases := []struct { + start int + end int + hasMore bool + }{ + {-1, 1, true}, // single element with non-existent left proof + {0, 1, true}, // single element with existent left proof + {0, 10, true}, + {50, 100, true}, + {50, len(entries), false}, // No more element expected + {len(entries) - 1, len(entries), false}, // Single last element with two existent proofs(point to same key) + {len(entries) - 1, -1, false}, // Single last element with non-existent right proof + {0, len(entries), false}, // The whole set with existent left proof + {-1, len(entries), false}, // The whole set with non-existent left proof + {-1, -1, false}, // The whole set with non-existent left/right proof + } + for _, c := range cases { + var ( + firstKey []byte + lastKey []byte + start = c.start + end = c.end + proof = memorydb.New() + ) + if c.start == -1 { + firstKey, start = common.Hash{}.Bytes(), 0 + if err := trie.Prove(firstKey, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + } else { + firstKey = entries[c.start].k + if err := trie.Prove(entries[c.start].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + } + if c.end == -1 { + lastKey, end = common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").Bytes(), len(entries) + if err := trie.Prove(lastKey, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + } else { + lastKey = entries[c.end-1].k + if err := trie.Prove(entries[c.end-1].k, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + } + k := make([][]byte, 0) + v := make([][]byte, 0) + for i := start; i < end; i++ { + k = append(k, entries[i].k) + v = append(v, entries[i].v) + } + hasMore, err := VerifyRangeProof(trie.Hash(), firstKey, lastKey, k, v, proof) + if err != nil { + t.Fatalf("Expected no error, got %v", err) + } + if hasMore != c.hasMore { + t.Fatalf("Wrong hasMore indicator, want %t, got %t", c.hasMore, hasMore) + } + } +} + +// TestEmptyRangeProof tests the range proof with "no" element. +// The first edge proof must be a non-existent proof. +func TestEmptyRangeProof(t *testing.T) { + trie, vals := randomTrie(4096) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + cases := []struct { + pos int + err bool + }{ + {len(entries) - 1, false}, + {500, true}, + } + for _, c := range cases { + proof := memorydb.New() + first := increseKey(common.CopyBytes(entries[c.pos].k)) + if err := trie.Prove(first, 0, proof); err != nil { + t.Fatalf("Failed to prove the first node %v", err) + } + _, err := VerifyRangeProof(trie.Hash(), first, nil, nil, nil, proof) + if c.err && err == nil { + t.Fatalf("Expected error, got nil") + } + if !c.err && err != nil { + t.Fatalf("Expected no error, got %v", err) + } + } +} + +// TestBloatedProof tests a malicious proof, where the proof is more or less the +// whole trie. Previously we didn't accept such packets, but the new APIs do, so +// lets leave this test as a bit weird, but present. +func TestBloatedProof(t *testing.T) { + // Use a small trie + trie, kvs := nonRandomTrie(100) + var entries entrySlice + for _, kv := range kvs { + entries = append(entries, kv) + } + sort.Sort(entries) + var keys [][]byte + var vals [][]byte + + proof := memorydb.New() + // In the 'malicious' case, we add proofs for every single item + // (but only one key/value pair used as leaf) + for i, entry := range entries { + trie.Prove(entry.k, 0, proof) + if i == 50 { + keys = append(keys, entry.k) + vals = append(vals, entry.v) + } + } + // For reference, we use the same function, but _only_ prove the first + // and last element + want := memorydb.New() + trie.Prove(keys[0], 0, want) + trie.Prove(keys[len(keys)-1], 0, want) + + if _, err := VerifyRangeProof(trie.Hash(), keys[0], keys[len(keys)-1], keys, vals, proof); err != nil { + t.Fatalf("expected bloated proof to succeed, got %v", err) + } +} + +// mutateByte changes one byte in b. +func mutateByte(b []byte) { + for r := mrand.Intn(len(b)); ; { + new := byte(mrand.Intn(255)) + if new != b[r] { + b[r] = new + break + } + } +} + +func increseKey(key []byte) []byte { + for i := len(key) - 1; i >= 0; i-- { + key[i]++ + if key[i] != 0x0 { + break + } + } + return key +} + +func decreseKey(key []byte) []byte { + for i := len(key) - 1; i >= 0; i-- { + key[i]-- + if key[i] != 0xff { + break + } + } + return key +} + +func BenchmarkProve(b *testing.B) { + trie, vals := randomTrie(100) + var keys []string + for k := range vals { + keys = append(keys, k) + } + + b.ResetTimer() + for i := 0; i < b.N; i++ { + kv := vals[keys[i%len(keys)]] + proofs := memorydb.New() + if trie.Prove(kv.k, 0, proofs); proofs.Len() == 0 { + b.Fatalf("zero length proof for %x", kv.k) + } + } +} + +func BenchmarkVerifyProof(b *testing.B) { + trie, vals := randomTrie(100) + root := trie.Hash() + var keys []string + var proofs []*memorydb.Database + for k := range vals { + keys = append(keys, k) + proof := memorydb.New() + trie.Prove([]byte(k), 0, proof) + proofs = append(proofs, proof) + } + + b.ResetTimer() + for i := 0; i < b.N; i++ { + im := i % len(keys) + if _, err := VerifyProof(root, []byte(keys[im]), proofs[im]); err != nil { + b.Fatalf("key %x: %v", keys[im], err) + } + } +} + +func BenchmarkVerifyRangeProof10(b *testing.B) { benchmarkVerifyRangeProof(b, 10) } +func BenchmarkVerifyRangeProof100(b *testing.B) { benchmarkVerifyRangeProof(b, 100) } +func BenchmarkVerifyRangeProof1000(b *testing.B) { benchmarkVerifyRangeProof(b, 1000) } +func BenchmarkVerifyRangeProof5000(b *testing.B) { benchmarkVerifyRangeProof(b, 5000) } + +func benchmarkVerifyRangeProof(b *testing.B, size int) { + trie, vals := randomTrie(8192) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + start := 2 + end := start + size + proof := memorydb.New() + if err := trie.Prove(entries[start].k, 0, proof); err != nil { + b.Fatalf("Failed to prove the first node %v", err) + } + if err := trie.Prove(entries[end-1].k, 0, proof); err != nil { + b.Fatalf("Failed to prove the last node %v", err) + } + var keys [][]byte + var values [][]byte + for i := start; i < end; i++ { + keys = append(keys, entries[i].k) + values = append(values, entries[i].v) + } + + b.ResetTimer() + for i := 0; i < b.N; i++ { + _, err := VerifyRangeProof(trie.Hash(), keys[0], keys[len(keys)-1], keys, values, proof) + if err != nil { + b.Fatalf("Case %d(%d->%d) expect no error, got %v", i, start, end-1, err) + } + } +} + +func BenchmarkVerifyRangeNoProof10(b *testing.B) { benchmarkVerifyRangeNoProof(b, 100) } +func BenchmarkVerifyRangeNoProof500(b *testing.B) { benchmarkVerifyRangeNoProof(b, 500) } +func BenchmarkVerifyRangeNoProof1000(b *testing.B) { benchmarkVerifyRangeNoProof(b, 1000) } + +func benchmarkVerifyRangeNoProof(b *testing.B, size int) { + trie, vals := randomTrie(size) + var entries entrySlice + for _, kv := range vals { + entries = append(entries, kv) + } + sort.Sort(entries) + + var keys [][]byte + var values [][]byte + for _, entry := range entries { + keys = append(keys, entry.k) + values = append(values, entry.v) + } + b.ResetTimer() + for i := 0; i < b.N; i++ { + _, err := VerifyRangeProof(trie.Hash(), keys[0], keys[len(keys)-1], keys, values, nil) + if err != nil { + b.Fatalf("Expected no error, got %v", err) + } + } +} + +func randomTrie(n int) (*Trie, map[string]*kv) { + trie := new(Trie) + vals := make(map[string]*kv) + for i := byte(0); i < 100; i++ { + value := &kv{common.LeftPadBytes([]byte{i}, 32), []byte{i}, false} + value2 := &kv{common.LeftPadBytes([]byte{i + 10}, 32), []byte{i}, false} + trie.Update(value.k, value.v) + trie.Update(value2.k, value2.v) + vals[string(value.k)] = value + vals[string(value2.k)] = value2 + } + for i := 0; i < n; i++ { + value := &kv{randBytes(32), randBytes(20), false} + trie.Update(value.k, value.v) + vals[string(value.k)] = value + } + return trie, vals +} + +func randBytes(n int) []byte { + r := make([]byte, n) + crand.Read(r) + return r +} + +func nonRandomTrie(n int) (*Trie, map[string]*kv) { + trie := new(Trie) + vals := make(map[string]*kv) + max := uint64(0xffffffffffffffff) + for i := uint64(0); i < uint64(n); i++ { + value := make([]byte, 32) + key := make([]byte, 32) + binary.LittleEndian.PutUint64(key, i) + binary.LittleEndian.PutUint64(value, i-max) + // value := &kv{common.LeftPadBytes([]byte{i}, 32), []byte{i}, false} + elem := &kv{key, value, false} + trie.Update(elem.k, elem.v) + vals[string(elem.k)] = elem + } + return trie, vals +} diff --git a/trie/secure_trie.go b/trie/secure_trie.go new file mode 100644 index 0000000000..3f7ecdfcd1 --- /dev/null +++ b/trie/secure_trie.go @@ -0,0 +1,229 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "fmt" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +// SecureTrie wraps a trie with key hashing. In a secure trie, all +// access operations hash the key using keccak256. This prevents +// calling code from creating long chains of nodes that +// increase the access time. +// +// Contrary to a regular trie, a SecureTrie can only be created with +// New and must have an attached database. The database also stores +// the preimage of each key. +// +// SecureTrie is not safe for concurrent use. +type SecureTrie struct { + trie Trie + hashKeyBuf [common.HashLength]byte + secKeyCache map[string][]byte + secKeyCacheOwner *SecureTrie // Pointer to self, replace the key cache on mismatch +} + +// NewSecure creates a trie with an existing root node from a backing database +// and optional intermediate in-memory node pool. +// +// If root is the zero hash or the sha3 hash of an empty string, the +// trie is initially empty. Otherwise, New will panic if db is nil +// and returns MissingNodeError if the root node cannot be found. +// +// Accessing the trie loads nodes from the database or node pool on demand. +// Loaded nodes are kept around until their 'cache generation' expires. +// A new cache generation is created by each call to Commit. +// cachelimit sets the number of past cache generations to keep. +func NewSecure(root common.Hash, db *Database) (*SecureTrie, error) { + if db == nil { + panic("trie.NewSecure called without a database") + } + trie, err := New(root, db) + if err != nil { + return nil, err + } + return &SecureTrie{trie: *trie}, nil +} + +// Get returns the value for key stored in the trie. +// The value bytes must not be modified by the caller. +func (t *SecureTrie) Get(key []byte) []byte { + res, err := t.TryGet(key) + if err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + } + return res +} + +// TryGet returns the value for key stored in the trie. +// The value bytes must not be modified by the caller. +// If a node was not found in the database, a MissingNodeError is returned. +func (t *SecureTrie) TryGet(key []byte) ([]byte, error) { + return t.trie.TryGet(t.hashKey(key)) +} + +// TryGetNode attempts to retrieve a trie node by compact-encoded path. It is not +// possible to use keybyte-encoding as the path might contain odd nibbles. +func (t *SecureTrie) TryGetNode(path []byte) ([]byte, int, error) { + return t.trie.TryGetNode(path) +} + +// TryUpdate account will abstract the write of an account to the +// secure trie. +func (t *SecureTrie) TryUpdateAccount(key []byte, acc *types.StateAccount) error { + hk := t.hashKey(key) + data, err := rlp.EncodeToBytes(acc) + if err != nil { + return err + } + if err := t.trie.TryUpdate(hk, data); err != nil { + return err + } + t.getSecKeyCache()[string(hk)] = common.CopyBytes(key) + return nil +} + +// Update associates key with value in the trie. Subsequent calls to +// Get will return value. If value has length zero, any existing value +// is deleted from the trie and calls to Get will return nil. +// +// The value bytes must not be modified by the caller while they are +// stored in the trie. +func (t *SecureTrie) Update(key, value []byte) { + if err := t.TryUpdate(key, value); err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + } +} + +// TryUpdate associates key with value in the trie. Subsequent calls to +// Get will return value. If value has length zero, any existing value +// is deleted from the trie and calls to Get will return nil. +// +// The value bytes must not be modified by the caller while they are +// stored in the trie. +// +// If a node was not found in the database, a MissingNodeError is returned. +func (t *SecureTrie) TryUpdate(key, value []byte) error { + hk := t.hashKey(key) + err := t.trie.TryUpdate(hk, value) + if err != nil { + return err + } + t.getSecKeyCache()[string(hk)] = common.CopyBytes(key) + return nil +} + +// Delete removes any existing value for key from the trie. +func (t *SecureTrie) Delete(key []byte) { + if err := t.TryDelete(key); err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + } +} + +// TryDelete removes any existing value for key from the trie. +// If a node was not found in the database, a MissingNodeError is returned. +func (t *SecureTrie) TryDelete(key []byte) error { + hk := t.hashKey(key) + delete(t.getSecKeyCache(), string(hk)) + return t.trie.TryDelete(hk) +} + +// GetKey returns the sha3 preimage of a hashed key that was +// previously used to store a value. +func (t *SecureTrie) GetKey(shaKey []byte) []byte { + if key, ok := t.getSecKeyCache()[string(shaKey)]; ok { + return key + } + return t.trie.db.preimage(common.BytesToHash(shaKey)) +} + +// Commit writes all nodes and the secure hash pre-images to the trie's database. +// Nodes are stored with their sha3 hash as the key. +// +// Committing flushes nodes from memory. Subsequent Get calls will load nodes +// from the database. +func (t *SecureTrie) Commit(onleaf LeafCallback) (common.Hash, int, error) { + // Write all the pre-images to the actual disk database + if len(t.getSecKeyCache()) > 0 { + if t.trie.db.preimages != nil { // Ugly direct check but avoids the below write lock + t.trie.db.lock.Lock() + for hk, key := range t.secKeyCache { + t.trie.db.insertPreimage(common.BytesToHash([]byte(hk)), key) + } + t.trie.db.lock.Unlock() + } + t.secKeyCache = make(map[string][]byte) + } + // Commit the trie to its intermediate node database + return t.trie.Commit(onleaf) +} + +// Hash returns the root hash of SecureTrie. It does not write to the +// database and can be used even if the trie doesn't have one. +func (t *SecureTrie) Hash() common.Hash { + return t.trie.Hash() +} + +// Copy returns a copy of SecureTrie. +func (t *SecureTrie) Copy() *SecureTrie { + cpy := *t + return &cpy +} + +// NodeIterator returns an iterator that returns nodes of the underlying trie. Iteration +// starts at the key after the given start key. +func (t *SecureTrie) NodeIterator(start []byte) NodeIterator { + return t.trie.NodeIterator(start) +} + +// hashKey returns the hash of key as an ephemeral buffer. +// The caller must not hold onto the return value because it will become +// invalid on the next call to hashKey or secKey. +func (t *SecureTrie) hashKey(key []byte) []byte { + h := newHasher(false) + h.sha.Reset() + h.sha.Write(key) + h.sha.Read(t.hashKeyBuf[:]) + returnHasherToPool(h) + return t.hashKeyBuf[:] +} + +// getSecKeyCache returns the current secure key cache, creating a new one if +// ownership changed (i.e. the current secure trie is a copy of another owning +// the actual cache). +func (t *SecureTrie) getSecKeyCache() map[string][]byte { + if t != t.secKeyCacheOwner { + t.secKeyCacheOwner = t + t.secKeyCache = make(map[string][]byte) + } + return t.secKeyCache +} diff --git a/trie/secure_trie_test.go b/trie/secure_trie_test.go new file mode 100644 index 0000000000..da6d9bb899 --- /dev/null +++ b/trie/secure_trie_test.go @@ -0,0 +1,154 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "runtime" + "sync" + "testing" + + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func newEmptySecure() *SecureTrie { + trie, _ := NewSecure(common.Hash{}, NewDatabase(memorydb.New())) + return trie +} + +// makeTestSecureTrie creates a large enough secure trie for testing. +func makeTestSecureTrie() (*Database, *SecureTrie, map[string][]byte) { + // Create an empty trie + triedb := NewDatabase(memorydb.New()) + trie, _ := NewSecure(common.Hash{}, triedb) + + // Fill it with some arbitrary data + content := make(map[string][]byte) + for i := byte(0); i < 255; i++ { + // Map the same data under multiple keys + key, val := common.LeftPadBytes([]byte{1, i}, 32), []byte{i} + content[string(key)] = val + trie.Update(key, val) + + key, val = common.LeftPadBytes([]byte{2, i}, 32), []byte{i} + content[string(key)] = val + trie.Update(key, val) + + // Add some other data to inflate the trie + for j := byte(3); j < 13; j++ { + key, val = common.LeftPadBytes([]byte{j, i}, 32), []byte{j, i} + content[string(key)] = val + trie.Update(key, val) + } + } + trie.Commit(nil) + + // Return the generated trie + return triedb, trie, content +} + +func TestSecureDelete(t *testing.T) { + trie := newEmptySecure() + vals := []struct{ k, v string }{ + {"do", "verb"}, + {"ether", "wookiedoo"}, + {"horse", "stallion"}, + {"shaman", "horse"}, + {"doge", "coin"}, + {"ether", ""}, + {"dog", "puppy"}, + {"shaman", ""}, + } + for _, val := range vals { + if val.v != "" { + trie.Update([]byte(val.k), []byte(val.v)) + } else { + trie.Delete([]byte(val.k)) + } + } + hash := trie.Hash() + exp := common.HexToHash("29b235a58c3c25ab83010c327d5932bcf05324b7d6b1185e650798034783ca9d") + if hash != exp { + t.Errorf("expected %x got %x", exp, hash) + } +} + +func TestSecureGetKey(t *testing.T) { + trie := newEmptySecure() + trie.Update([]byte("foo"), []byte("bar")) + + key := []byte("foo") + value := []byte("bar") + seckey := crypto.Keccak256(key) + + if !bytes.Equal(trie.Get(key), value) { + t.Errorf("Get did not return bar") + } + if k := trie.GetKey(seckey); !bytes.Equal(k, key) { + t.Errorf("GetKey returned %q, want %q", k, key) + } +} + +func TestSecureTrieConcurrency(t *testing.T) { + // Create an initial trie and copy if for concurrent access + _, trie, _ := makeTestSecureTrie() + + threads := runtime.NumCPU() + tries := make([]*SecureTrie, threads) + for i := 0; i < threads; i++ { + cpy := *trie + tries[i] = &cpy + } + // Start a batch of goroutines interactng with the trie + pend := new(sync.WaitGroup) + pend.Add(threads) + for i := 0; i < threads; i++ { + go func(index int) { + defer pend.Done() + + for j := byte(0); j < 255; j++ { + // Map the same data under multiple keys + key, val := common.LeftPadBytes([]byte{byte(index), 1, j}, 32), []byte{j} + tries[index].Update(key, val) + + key, val = common.LeftPadBytes([]byte{byte(index), 2, j}, 32), []byte{j} + tries[index].Update(key, val) + + // Add some other data to inflate the trie + for k := byte(3); k < 13; k++ { + key, val = common.LeftPadBytes([]byte{byte(index), k, j}, 32), []byte{k, j} + tries[index].Update(key, val) + } + } + tries[index].Commit(nil) + }(i) + } + // Wait for all threads to finish + pend.Wait() +} diff --git a/trie/stacktrie.go b/trie/stacktrie.go new file mode 100644 index 0000000000..ed71913340 --- /dev/null +++ b/trie/stacktrie.go @@ -0,0 +1,523 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2020 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bufio" + "bytes" + "encoding/gob" + "errors" + "fmt" + "io" + "sync" + + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +var ErrCommitDisabled = errors.New("no database for committing") + +var stPool = sync.Pool{ + New: func() interface{} { + return NewStackTrie(nil) + }, +} + +func stackTrieFromPool(db ethdb.KeyValueWriter) *StackTrie { + st := stPool.Get().(*StackTrie) + st.db = db + return st +} + +func returnToPool(st *StackTrie) { + st.Reset() + stPool.Put(st) +} + +// StackTrie is a trie implementation that expects keys to be inserted +// in order. Once it determines that a subtree will no longer be inserted +// into, it will hash it and free up the memory it uses. +type StackTrie struct { + nodeType uint8 // node type (as in branch, ext, leaf) + val []byte // value contained by this node if it's a leaf + key []byte // key chunk covered by this (full|ext) node + keyOffset int // offset of the key chunk inside a full key + children [16]*StackTrie // list of children (for fullnodes and exts) + db ethdb.KeyValueWriter // Pointer to the commit db, can be nil +} + +// NewStackTrie allocates and initializes an empty trie. +func NewStackTrie(db ethdb.KeyValueWriter) *StackTrie { + return &StackTrie{ + nodeType: emptyNode, + db: db, + } +} + +// NewFromBinary initialises a serialized stacktrie with the given db. +func NewFromBinary(data []byte, db ethdb.KeyValueWriter) (*StackTrie, error) { + var st StackTrie + if err := st.UnmarshalBinary(data); err != nil { + return nil, err + } + // If a database is used, we need to recursively add it to every child + if db != nil { + st.setDb(db) + } + return &st, nil +} + +// MarshalBinary implements encoding.BinaryMarshaler +func (st *StackTrie) MarshalBinary() (data []byte, err error) { + var ( + b bytes.Buffer + w = bufio.NewWriter(&b) + ) + if err := gob.NewEncoder(w).Encode(struct { + Nodetype uint8 + Val []byte + Key []byte + KeyOffset uint8 + }{ + st.nodeType, + st.val, + st.key, + uint8(st.keyOffset), + }); err != nil { + return nil, err + } + for _, child := range st.children { + if child == nil { + w.WriteByte(0) + continue + } + w.WriteByte(1) + if childData, err := child.MarshalBinary(); err != nil { + return nil, err + } else { + w.Write(childData) + } + } + w.Flush() + return b.Bytes(), nil +} + +// UnmarshalBinary implements encoding.BinaryUnmarshaler +func (st *StackTrie) UnmarshalBinary(data []byte) error { + r := bytes.NewReader(data) + return st.unmarshalBinary(r) +} + +func (st *StackTrie) unmarshalBinary(r io.Reader) error { + var dec struct { + Nodetype uint8 + Val []byte + Key []byte + KeyOffset uint8 + } + gob.NewDecoder(r).Decode(&dec) + st.nodeType = dec.Nodetype + st.val = dec.Val + st.key = dec.Key + st.keyOffset = int(dec.KeyOffset) + + hasChild := make([]byte, 1) + for i := range st.children { + if _, err := r.Read(hasChild); err != nil { + return err + } else if hasChild[0] == 0 { + continue + } + var child StackTrie + child.unmarshalBinary(r) + st.children[i] = &child + } + return nil +} + +func (st *StackTrie) setDb(db ethdb.KeyValueWriter) { + st.db = db + for _, child := range st.children { + if child != nil { + child.setDb(db) + } + } +} + +func newLeaf(ko int, key, val []byte, db ethdb.KeyValueWriter) *StackTrie { + st := stackTrieFromPool(db) + st.nodeType = leafNode + st.keyOffset = ko + st.key = append(st.key, key[ko:]...) + st.val = val + return st +} + +func newExt(ko int, key []byte, child *StackTrie, db ethdb.KeyValueWriter) *StackTrie { + st := stackTrieFromPool(db) + st.nodeType = extNode + st.keyOffset = ko + st.key = append(st.key, key[ko:]...) + st.children[0] = child + return st +} + +// List all values that StackTrie#nodeType can hold +const ( + emptyNode = iota + branchNode + extNode + leafNode + hashedNode +) + +// TryUpdate inserts a (key, value) pair into the stack trie +func (st *StackTrie) TryUpdate(key, value []byte) error { + k := keybytesToHex(key) + if len(value) == 0 { + panic("deletion not supported") + } + st.insert(k[:len(k)-1], value) + return nil +} + +func (st *StackTrie) Update(key, value []byte) { + if err := st.TryUpdate(key, value); err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + } +} + +func (st *StackTrie) Reset() { + st.db = nil + st.key = st.key[:0] + st.val = nil + for i := range st.children { + st.children[i] = nil + } + st.nodeType = emptyNode + st.keyOffset = 0 +} + +// Helper function that, given a full key, determines the index +// at which the chunk pointed by st.keyOffset is different from +// the same chunk in the full key. +func (st *StackTrie) getDiffIndex(key []byte) int { + diffindex := 0 + for ; diffindex < len(st.key) && st.key[diffindex] == key[st.keyOffset+diffindex]; diffindex++ { + } + return diffindex +} + +// Helper function to that inserts a (key, value) pair into +// the trie. +func (st *StackTrie) insert(key, value []byte) { + switch st.nodeType { + case branchNode: /* Branch */ + idx := int(key[st.keyOffset]) + // Unresolve elder siblings + for i := idx - 1; i >= 0; i-- { + if st.children[i] != nil { + if st.children[i].nodeType != hashedNode { + st.children[i].hash() + } + break + } + } + // Add new child + if st.children[idx] == nil { + st.children[idx] = stackTrieFromPool(st.db) + st.children[idx].keyOffset = st.keyOffset + 1 + } + st.children[idx].insert(key, value) + case extNode: /* Ext */ + // Compare both key chunks and see where they differ + diffidx := st.getDiffIndex(key) + + // Check if chunks are identical. If so, recurse into + // the child node. Otherwise, the key has to be split + // into 1) an optional common prefix, 2) the fullnode + // representing the two differing path, and 3) a leaf + // for each of the differentiated subtrees. + if diffidx == len(st.key) { + // Ext key and key segment are identical, recurse into + // the child node. + st.children[0].insert(key, value) + return + } + // Save the original part. Depending if the break is + // at the extension's last byte or not, create an + // intermediate extension or use the extension's child + // node directly. + var n *StackTrie + if diffidx < len(st.key)-1 { + n = newExt(diffidx+1, st.key, st.children[0], st.db) + } else { + // Break on the last byte, no need to insert + // an extension node: reuse the current node + n = st.children[0] + } + // Convert to hash + n.hash() + var p *StackTrie + if diffidx == 0 { + // the break is on the first byte, so + // the current node is converted into + // a branch node. + st.children[0] = nil + p = st + st.nodeType = branchNode + } else { + // the common prefix is at least one byte + // long, insert a new intermediate branch + // node. + st.children[0] = stackTrieFromPool(st.db) + st.children[0].nodeType = branchNode + st.children[0].keyOffset = st.keyOffset + diffidx + p = st.children[0] + } + // Create a leaf for the inserted part + o := newLeaf(st.keyOffset+diffidx+1, key, value, st.db) + + // Insert both child leaves where they belong: + origIdx := st.key[diffidx] + newIdx := key[diffidx+st.keyOffset] + p.children[origIdx] = n + p.children[newIdx] = o + st.key = st.key[:diffidx] + + case leafNode: /* Leaf */ + // Compare both key chunks and see where they differ + diffidx := st.getDiffIndex(key) + + // Overwriting a key isn't supported, which means that + // the current leaf is expected to be split into 1) an + // optional extension for the common prefix of these 2 + // keys, 2) a fullnode selecting the path on which the + // keys differ, and 3) one leaf for the differentiated + // component of each key. + if diffidx >= len(st.key) { + panic("Trying to insert into existing key") + } + + // Check if the split occurs at the first nibble of the + // chunk. In that case, no prefix extnode is necessary. + // Otherwise, create that + var p *StackTrie + if diffidx == 0 { + // Convert current leaf into a branch + st.nodeType = branchNode + p = st + st.children[0] = nil + } else { + // Convert current node into an ext, + // and insert a child branch node. + st.nodeType = extNode + st.children[0] = NewStackTrie(st.db) + st.children[0].nodeType = branchNode + st.children[0].keyOffset = st.keyOffset + diffidx + p = st.children[0] + } + + // Create the two child leaves: the one containing the + // original value and the one containing the new value + // The child leave will be hashed directly in order to + // free up some memory. + origIdx := st.key[diffidx] + p.children[origIdx] = newLeaf(diffidx+1, st.key, st.val, st.db) + p.children[origIdx].hash() + + newIdx := key[diffidx+st.keyOffset] + p.children[newIdx] = newLeaf(p.keyOffset+1, key, value, st.db) + + // Finally, cut off the key part that has been passed + // over to the children. + st.key = st.key[:diffidx] + st.val = nil + case emptyNode: /* Empty */ + st.nodeType = leafNode + st.key = key[st.keyOffset:] + st.val = value + case hashedNode: + panic("trying to insert into hash") + default: + panic("invalid type") + } +} + +// hash() hashes the node 'st' and converts it into 'hashedNode', if possible. +// Possible outcomes: +// 1. The rlp-encoded value was >= 32 bytes: +// - Then the 32-byte `hash` will be accessible in `st.val`. +// - And the 'st.type' will be 'hashedNode' +// 2. The rlp-encoded value was < 32 bytes +// - Then the <32 byte rlp-encoded value will be accessible in 'st.val'. +// - And the 'st.type' will be 'hashedNode' AGAIN +// +// This method will also: +// set 'st.type' to hashedNode +// clear 'st.key' +func (st *StackTrie) hash() { + /* Shortcut if node is already hashed */ + if st.nodeType == hashedNode { + return + } + // The 'hasher' is taken from a pool, but we don't actually + // claim an instance until all children are done with their hashing, + // and we actually need one + var h *hasher + + switch st.nodeType { + case branchNode: + var nodes [17]node + for i, child := range st.children { + if child == nil { + nodes[i] = nilValueNode + continue + } + child.hash() + if len(child.val) < 32 { + nodes[i] = rawNode(child.val) + } else { + nodes[i] = hashNode(child.val) + } + st.children[i] = nil // Reclaim mem from subtree + returnToPool(child) + } + nodes[16] = nilValueNode + h = newHasher(false) + defer returnHasherToPool(h) + h.tmp.Reset() + if err := rlp.Encode(&h.tmp, nodes); err != nil { + panic(err) + } + case extNode: + st.children[0].hash() + h = newHasher(false) + defer returnHasherToPool(h) + h.tmp.Reset() + var valuenode node + if len(st.children[0].val) < 32 { + valuenode = rawNode(st.children[0].val) + } else { + valuenode = hashNode(st.children[0].val) + } + n := struct { + Key []byte + Val node + }{ + Key: hexToCompact(st.key), + Val: valuenode, + } + if err := rlp.Encode(&h.tmp, n); err != nil { + panic(err) + } + returnToPool(st.children[0]) + st.children[0] = nil // Reclaim mem from subtree + case leafNode: + h = newHasher(false) + defer returnHasherToPool(h) + h.tmp.Reset() + st.key = append(st.key, byte(16)) + sz := hexToCompactInPlace(st.key) + n := [][]byte{st.key[:sz], st.val} + if err := rlp.Encode(&h.tmp, n); err != nil { + panic(err) + } + case emptyNode: + st.val = emptyRoot.Bytes() + st.key = st.key[:0] + st.nodeType = hashedNode + return + default: + panic("Invalid node type") + } + st.key = st.key[:0] + st.nodeType = hashedNode + if len(h.tmp) < 32 { + st.val = common.CopyBytes(h.tmp) + return + } + // Write the hash to the 'val'. We allocate a new val here to not mutate + // input values + st.val = make([]byte, 32) + h.sha.Reset() + h.sha.Write(h.tmp) + h.sha.Read(st.val) + if st.db != nil { + // TODO! Is it safe to Put the slice here? + // Do all db implementations copy the value provided? + st.db.Put(st.val, h.tmp) + } +} + +// Hash returns the hash of the current node +func (st *StackTrie) Hash() (h common.Hash) { + st.hash() + if len(st.val) != 32 { + // If the node's RLP isn't 32 bytes long, the node will not + // be hashed, and instead contain the rlp-encoding of the + // node. For the top level node, we need to force the hashing. + ret := make([]byte, 32) + h := newHasher(false) + defer returnHasherToPool(h) + h.sha.Reset() + h.sha.Write(st.val) + h.sha.Read(ret) + return common.BytesToHash(ret) + } + return common.BytesToHash(st.val) +} + +// Commit will firstly hash the entrie trie if it's still not hashed +// and then commit all nodes to the associated database. Actually most +// of the trie nodes MAY have been committed already. The main purpose +// here is to commit the root node. +// +// The associated database is expected, otherwise the whole commit +// functionality should be disabled. +func (st *StackTrie) Commit() (common.Hash, error) { + if st.db == nil { + return common.Hash{}, ErrCommitDisabled + } + st.hash() + if len(st.val) != 32 { + // If the node's RLP isn't 32 bytes long, the node will not + // be hashed (and committed), and instead contain the rlp-encoding of the + // node. For the top level node, we need to force the hashing+commit. + ret := make([]byte, 32) + h := newHasher(false) + defer returnHasherToPool(h) + h.sha.Reset() + h.sha.Write(st.val) + h.sha.Read(ret) + st.db.Put(ret, st.val) + return common.BytesToHash(ret), nil + } + return common.BytesToHash(st.val), nil +} diff --git a/trie/stacktrie_test.go b/trie/stacktrie_test.go new file mode 100644 index 0000000000..108fb278a9 --- /dev/null +++ b/trie/stacktrie_test.go @@ -0,0 +1,243 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "math/big" + "testing" + + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +func TestSizeBug(t *testing.T) { + st := NewStackTrie(nil) + nt, _ := New(common.Hash{}, NewDatabase(memorydb.New())) + + leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563") + value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3") + + nt.TryUpdate(leaf, value) + st.TryUpdate(leaf, value) + + if nt.Hash() != st.Hash() { + t.Fatalf("error %x != %x", st.Hash(), nt.Hash()) + } +} + +func TestEmptyBug(t *testing.T) { + st := NewStackTrie(nil) + nt, _ := New(common.Hash{}, NewDatabase(memorydb.New())) + + // leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563") + // value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3") + kvs := []struct { + K string + V string + }{ + {K: "405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace", V: "9496f4ec2bf9dab484cac6be589e8417d84781be08"}, + {K: "40edb63a35fcf86c08022722aa3287cdd36440d671b4918131b2514795fefa9c", V: "01"}, + {K: "b10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6", V: "947a30f7736e48d6599356464ba4c150d8da0302ff"}, + {K: "c2575a0e9e593c00f959f8c92f12db2869c3395a3b0502d05e2516446f71f85b", V: "02"}, + } + + for _, kv := range kvs { + nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + } + + if nt.Hash() != st.Hash() { + t.Fatalf("error %x != %x", st.Hash(), nt.Hash()) + } +} + +func TestValLength56(t *testing.T) { + st := NewStackTrie(nil) + nt, _ := New(common.Hash{}, NewDatabase(memorydb.New())) + + // leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563") + // value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3") + kvs := []struct { + K string + V string + }{ + {K: "405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace", V: "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"}, + } + + for _, kv := range kvs { + nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + } + + if nt.Hash() != st.Hash() { + t.Fatalf("error %x != %x", st.Hash(), nt.Hash()) + } +} + +// TestUpdateSmallNodes tests a case where the leaves are small (both key and value), +// which causes a lot of node-within-node. This case was found via fuzzing. +func TestUpdateSmallNodes(t *testing.T) { + st := NewStackTrie(nil) + nt, _ := New(common.Hash{}, NewDatabase(memorydb.New())) + kvs := []struct { + K string + V string + }{ + {"63303030", "3041"}, // stacktrie.Update + {"65", "3000"}, // stacktrie.Update + } + for _, kv := range kvs { + nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + } + if nt.Hash() != st.Hash() { + t.Fatalf("error %x != %x", st.Hash(), nt.Hash()) + } +} + +// TestUpdateVariableKeys contains a case which stacktrie fails: when keys of different +// sizes are used, and the second one has the same prefix as the first, then the +// stacktrie fails, since it's unable to 'expand' on an already added leaf. +// For all practical purposes, this is fine, since keys are fixed-size length +// in account and storage tries. +// +// The test is marked as 'skipped', and exists just to have the behaviour documented. +// This case was found via fuzzing. +func TestUpdateVariableKeys(t *testing.T) { + t.SkipNow() + st := NewStackTrie(nil) + nt, _ := New(common.Hash{}, NewDatabase(memorydb.New())) + kvs := []struct { + K string + V string + }{ + {"0x33303534636532393561313031676174", "303030"}, + {"0x3330353463653239356131303167617430", "313131"}, + } + for _, kv := range kvs { + nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V)) + } + if nt.Hash() != st.Hash() { + t.Fatalf("error %x != %x", st.Hash(), nt.Hash()) + } +} + +// TestStacktrieNotModifyValues checks that inserting blobs of data into the +// stacktrie does not mutate the blobs +func TestStacktrieNotModifyValues(t *testing.T) { + st := NewStackTrie(nil) + { // Test a very small trie + // Give it the value as a slice with large backing alloc, + // so if the stacktrie tries to append, it won't have to realloc + value := make([]byte, 1, 100) + value[0] = 0x2 + want := common.CopyBytes(value) + st.TryUpdate([]byte{0x01}, value) + st.Hash() + if have := value; !bytes.Equal(have, want) { + t.Fatalf("tiny trie: have %#x want %#x", have, want) + } + st = NewStackTrie(nil) + } + // Test with a larger trie + keyB := big.NewInt(1) + keyDelta := big.NewInt(1) + var vals [][]byte + getValue := func(i int) []byte { + if i%2 == 0 { // large + return crypto.Keccak256(big.NewInt(int64(i)).Bytes()) + } else { // small + return big.NewInt(int64(i)).Bytes() + } + } + for i := 0; i < 1000; i++ { + key := common.BigToHash(keyB) + value := getValue(i) + st.TryUpdate(key.Bytes(), value) + vals = append(vals, value) + keyB = keyB.Add(keyB, keyDelta) + keyDelta.Add(keyDelta, common.Big1) + } + st.Hash() + for i := 0; i < 1000; i++ { + want := getValue(i) + + have := vals[i] + if !bytes.Equal(have, want) { + t.Fatalf("item %d, have %#x want %#x", i, have, want) + } + + } +} + +// TestStacktrieSerialization tests that the stacktrie works well if we +// serialize/unserialize it a lot +func TestStacktrieSerialization(t *testing.T) { + var ( + st = NewStackTrie(nil) + nt, _ = New(common.Hash{}, NewDatabase(memorydb.New())) + keyB = big.NewInt(1) + keyDelta = big.NewInt(1) + vals [][]byte + keys [][]byte + ) + getValue := func(i int) []byte { + if i%2 == 0 { // large + return crypto.Keccak256(big.NewInt(int64(i)).Bytes()) + } else { // small + return big.NewInt(int64(i)).Bytes() + } + } + for i := 0; i < 10; i++ { + vals = append(vals, getValue(i)) + keys = append(keys, common.BigToHash(keyB).Bytes()) + keyB = keyB.Add(keyB, keyDelta) + keyDelta.Add(keyDelta, common.Big1) + } + for i, k := range keys { + nt.TryUpdate(k, common.CopyBytes(vals[i])) + } + + for i, k := range keys { + blob, err := st.MarshalBinary() + if err != nil { + t.Fatal(err) + } + newSt, err := NewFromBinary(blob, nil) + if err != nil { + t.Fatal(err) + } + st = newSt + st.TryUpdate(k, common.CopyBytes(vals[i])) + } + if have, want := st.Hash(), nt.Hash(); have != want { + t.Fatalf("have %#x want %#x", have, want) + } +} diff --git a/trie/sync.go b/trie/sync.go new file mode 100644 index 0000000000..120f29bac5 --- /dev/null +++ b/trie/sync.go @@ -0,0 +1,476 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "errors" + "fmt" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/prque" +) + +// ErrNotRequested is returned by the trie sync when it's requested to process a +// node it did not request. +var ErrNotRequested = errors.New("not requested") + +// ErrAlreadyProcessed is returned by the trie sync when it's requested to process a +// node it already processed previously. +var ErrAlreadyProcessed = errors.New("already processed") + +// maxFetchesPerDepth is the maximum number of pending trie nodes per depth. The +// role of this value is to limit the number of trie nodes that get expanded in +// memory if the node was configured with a significant number of peers. +const maxFetchesPerDepth = 16384 + +// request represents a scheduled or already in-flight state retrieval request. +type request struct { + path []byte // Merkle path leading to this node for prioritization + hash common.Hash // Hash of the node data content to retrieve + data []byte // Data content of the node, cached until all subtrees complete + code bool // Whether this is a code entry + + parents []*request // Parent state nodes referencing this entry (notify all upon completion) + deps int // Number of dependencies before allowed to commit this node + + callback LeafCallback // Callback to invoke if a leaf node it reached on this branch +} + +// SyncPath is a path tuple identifying a particular trie node either in a single +// trie (account) or a layered trie (account -> storage). +// +// Content wise the tuple either has 1 element if it addresses a node in a single +// trie or 2 elements if it addresses a node in a stacked trie. +// +// To support aiming arbitrary trie nodes, the path needs to support odd nibble +// lengths. To avoid transferring expanded hex form over the network, the last +// part of the tuple (which needs to index into the middle of a trie) is compact +// encoded. In case of a 2-tuple, the first item is always 32 bytes so that is +// simple binary encoded. +// +// Examples: +// - Path 0x9 -> {0x19} +// - Path 0x99 -> {0x0099} +// - Path 0x01234567890123456789012345678901012345678901234567890123456789019 -> {0x0123456789012345678901234567890101234567890123456789012345678901, 0x19} +// - Path 0x012345678901234567890123456789010123456789012345678901234567890199 -> {0x0123456789012345678901234567890101234567890123456789012345678901, 0x0099} +type SyncPath [][]byte + +// newSyncPath converts an expanded trie path from nibble form into a compact +// version that can be sent over the network. +func newSyncPath(path []byte) SyncPath { + // If the hash is from the account trie, append a single item, if it + // is from the a storage trie, append a tuple. Note, the length 64 is + // clashing between account leaf and storage root. It's fine though + // because having a trie node at 64 depth means a hash collision was + // found and we're long dead. + if len(path) < 64 { + return SyncPath{hexToCompact(path)} + } + return SyncPath{hexToKeybytes(path[:64]), hexToCompact(path[64:])} +} + +// SyncResult is a response with requested data along with it's hash. +type SyncResult struct { + Hash common.Hash // Hash of the originally unknown trie node + Data []byte // Data content of the retrieved node +} + +// syncMemBatch is an in-memory buffer of successfully downloaded but not yet +// persisted data items. +type syncMemBatch struct { + nodes map[common.Hash][]byte // In-memory membatch of recently completed nodes + codes map[common.Hash][]byte // In-memory membatch of recently completed codes +} + +// newSyncMemBatch allocates a new memory-buffer for not-yet persisted trie nodes. +func newSyncMemBatch() *syncMemBatch { + return &syncMemBatch{ + nodes: make(map[common.Hash][]byte), + codes: make(map[common.Hash][]byte), + } +} + +// hasNode reports the trie node with specific hash is already cached. +func (batch *syncMemBatch) hasNode(hash common.Hash) bool { + _, ok := batch.nodes[hash] + return ok +} + +// hasCode reports the contract code with specific hash is already cached. +func (batch *syncMemBatch) hasCode(hash common.Hash) bool { + _, ok := batch.codes[hash] + return ok +} + +// Sync is the main state trie synchronisation scheduler, which provides yet +// unknown trie hashes to retrieve, accepts node data associated with said hashes +// and reconstructs the trie step by step until all is done. +type Sync struct { + database ethdb.KeyValueReader // Persistent database to check for existing entries + membatch *syncMemBatch // Memory buffer to avoid frequent database writes + nodeReqs map[common.Hash]*request // Pending requests pertaining to a trie node hash + codeReqs map[common.Hash]*request // Pending requests pertaining to a code hash + queue *prque.Prque // Priority queue with the pending requests + fetches map[int]int // Number of active fetches per trie node depth + bloom *SyncBloom // Bloom filter for fast state existence checks +} + +// NewSync creates a new trie data download scheduler. +func NewSync(root common.Hash, database ethdb.KeyValueReader, callback LeafCallback, bloom *SyncBloom) *Sync { + ts := &Sync{ + database: database, + membatch: newSyncMemBatch(), + nodeReqs: make(map[common.Hash]*request), + codeReqs: make(map[common.Hash]*request), + queue: prque.New(nil), + fetches: make(map[int]int), + bloom: bloom, + } + ts.AddSubTrie(root, nil, common.Hash{}, callback) + return ts +} + +// AddSubTrie registers a new trie to the sync code, rooted at the designated parent. +func (s *Sync) AddSubTrie(root common.Hash, path []byte, parent common.Hash, callback LeafCallback) { + // Short circuit if the trie is empty or already known + if root == emptyRoot { + return + } + if s.membatch.hasNode(root) { + return + } + if s.bloom == nil || s.bloom.Contains(root[:]) { + // Bloom filter says this might be a duplicate, double check. + // If database says yes, then at least the trie node is present + // and we hold the assumption that it's NOT legacy contract code. + blob := rawdb.ReadTrieNode(s.database, root) + if len(blob) > 0 { + return + } + // False positive, bump fault meter + bloomFaultMeter.Mark(1) + } + // Assemble the new sub-trie sync request + req := &request{ + path: path, + hash: root, + callback: callback, + } + // If this sub-trie has a designated parent, link them together + if parent != (common.Hash{}) { + ancestor := s.nodeReqs[parent] + if ancestor == nil { + panic(fmt.Sprintf("sub-trie ancestor not found: %x", parent)) + } + ancestor.deps++ + req.parents = append(req.parents, ancestor) + } + s.schedule(req) +} + +// AddCodeEntry schedules the direct retrieval of a contract code that should not +// be interpreted as a trie node, but rather accepted and stored into the database +// as is. +func (s *Sync) AddCodeEntry(hash common.Hash, path []byte, parent common.Hash) { + // Short circuit if the entry is empty or already known + if hash == emptyState { + return + } + if s.membatch.hasCode(hash) { + return + } + if s.bloom == nil || s.bloom.Contains(hash[:]) { + // Bloom filter says this might be a duplicate, double check. + // If database says yes, the blob is present for sure. + // Note we only check the existence with new code scheme, fast + // sync is expected to run with a fresh new node. Even there + // exists the code with legacy format, fetch and store with + // new scheme anyway. + if blob := rawdb.ReadCodeWithPrefix(s.database, hash); len(blob) > 0 { + return + } + // False positive, bump fault meter + bloomFaultMeter.Mark(1) + } + // Assemble the new sub-trie sync request + req := &request{ + path: path, + hash: hash, + code: true, + } + // If this sub-trie has a designated parent, link them together + if parent != (common.Hash{}) { + ancestor := s.nodeReqs[parent] // the parent of codereq can ONLY be nodereq + if ancestor == nil { + panic(fmt.Sprintf("raw-entry ancestor not found: %x", parent)) + } + ancestor.deps++ + req.parents = append(req.parents, ancestor) + } + s.schedule(req) +} + +// Missing retrieves the known missing nodes from the trie for retrieval. To aid +// both eth/6x style fast sync and snap/1x style state sync, the paths of trie +// nodes are returned too, as well as separate hash list for codes. +func (s *Sync) Missing(max int) (nodes []common.Hash, paths []SyncPath, codes []common.Hash) { + var ( + nodeHashes []common.Hash + nodePaths []SyncPath + codeHashes []common.Hash + ) + for !s.queue.Empty() && (max == 0 || len(nodeHashes)+len(codeHashes) < max) { + // Retrieve th enext item in line + item, prio := s.queue.Peek() + + // If we have too many already-pending tasks for this depth, throttle + depth := int(prio >> 56) + if s.fetches[depth] > maxFetchesPerDepth { + break + } + // Item is allowed to be scheduled, add it to the task list + s.queue.Pop() + s.fetches[depth]++ + + hash := item.(common.Hash) + if req, ok := s.nodeReqs[hash]; ok { + nodeHashes = append(nodeHashes, hash) + nodePaths = append(nodePaths, newSyncPath(req.path)) + } else { + codeHashes = append(codeHashes, hash) + } + } + return nodeHashes, nodePaths, codeHashes +} + +// Process injects the received data for requested item. Note it can +// happpen that the single response commits two pending requests(e.g. +// there are two requests one for code and one for node but the hash +// is same). In this case the second response for the same hash will +// be treated as "non-requested" item or "already-processed" item but +// there is no downside. +func (s *Sync) Process(result SyncResult) error { + // If the item was not requested either for code or node, bail out + if s.nodeReqs[result.Hash] == nil && s.codeReqs[result.Hash] == nil { + return ErrNotRequested + } + // There is an pending code request for this data, commit directly + var filled bool + if req := s.codeReqs[result.Hash]; req != nil && req.data == nil { + filled = true + req.data = result.Data + s.commit(req) + } + // There is an pending node request for this data, fill it. + if req := s.nodeReqs[result.Hash]; req != nil && req.data == nil { + filled = true + // Decode the node data content and update the request + node, err := decodeNode(result.Hash[:], result.Data) + if err != nil { + return err + } + req.data = result.Data + + // Create and schedule a request for all the children nodes + requests, err := s.children(req, node) + if err != nil { + return err + } + if len(requests) == 0 && req.deps == 0 { + s.commit(req) + } else { + req.deps += len(requests) + for _, child := range requests { + s.schedule(child) + } + } + } + if !filled { + return ErrAlreadyProcessed + } + return nil +} + +// Commit flushes the data stored in the internal membatch out to persistent +// storage, returning any occurred error. +func (s *Sync) Commit(dbw ethdb.Batch) error { + // Dump the membatch into a database dbw + for key, value := range s.membatch.nodes { + rawdb.WriteTrieNode(dbw, key, value) + if s.bloom != nil { + s.bloom.Add(key[:]) + } + } + for key, value := range s.membatch.codes { + rawdb.WriteCode(dbw, key, value) + if s.bloom != nil { + s.bloom.Add(key[:]) + } + } + // Drop the membatch data and return + s.membatch = newSyncMemBatch() + return nil +} + +// Pending returns the number of state entries currently pending for download. +func (s *Sync) Pending() int { + return len(s.nodeReqs) + len(s.codeReqs) +} + +// schedule inserts a new state retrieval request into the fetch queue. If there +// is already a pending request for this node, the new request will be discarded +// and only a parent reference added to the old one. +func (s *Sync) schedule(req *request) { + reqset := s.nodeReqs + if req.code { + reqset = s.codeReqs + } + // If we're already requesting this node, add a new reference and stop + if old, ok := reqset[req.hash]; ok { + old.parents = append(old.parents, req.parents...) + return + } + reqset[req.hash] = req + + // Schedule the request for future retrieval. This queue is shared + // by both node requests and code requests. It can happen that there + // is a trie node and code has same hash. In this case two elements + // with same hash and same or different depth will be pushed. But it's + // ok the worst case is the second response will be treated as duplicated. + prio := int64(len(req.path)) << 56 // depth >= 128 will never happen, storage leaves will be included in their parents + for i := 0; i < 14 && i < len(req.path); i++ { + prio |= int64(15-req.path[i]) << (52 - i*4) // 15-nibble => lexicographic order + } + s.queue.Push(req.hash, prio) +} + +// children retrieves all the missing children of a state trie entry for future +// retrieval scheduling. +func (s *Sync) children(req *request, object node) ([]*request, error) { + // Gather all the children of the node, irrelevant whether known or not + type child struct { + path []byte + node node + } + var children []child + + switch node := (object).(type) { + case *shortNode: + key := node.Key + if hasTerm(key) { + key = key[:len(key)-1] + } + children = []child{{ + node: node.Val, + path: append(append([]byte(nil), req.path...), key...), + }} + case *fullNode: + for i := 0; i < 17; i++ { + if node.Children[i] != nil { + children = append(children, child{ + node: node.Children[i], + path: append(append([]byte(nil), req.path...), byte(i)), + }) + } + } + default: + panic(fmt.Sprintf("unknown node: %+v", node)) + } + // Iterate over the children, and request all unknown ones + requests := make([]*request, 0, len(children)) + for _, child := range children { + // Notify any external watcher of a new key/value node + if req.callback != nil { + if node, ok := (child.node).(valueNode); ok { + var paths [][]byte + if len(child.path) == 2*common.HashLength { + paths = append(paths, hexToKeybytes(child.path)) + } else if len(child.path) == 4*common.HashLength { + paths = append(paths, hexToKeybytes(child.path[:2*common.HashLength])) + paths = append(paths, hexToKeybytes(child.path[2*common.HashLength:])) + } + if err := req.callback(paths, child.path, node, req.hash); err != nil { + return nil, err + } + } + } + // If the child references another node, resolve or schedule + if node, ok := (child.node).(hashNode); ok { + // Try to resolve the node from the local database + hash := common.BytesToHash(node) + if s.membatch.hasNode(hash) { + continue + } + if s.bloom == nil || s.bloom.Contains(node) { + // Bloom filter says this might be a duplicate, double check. + // If database says yes, then at least the trie node is present + // and we hold the assumption that it's NOT legacy contract code. + if blob := rawdb.ReadTrieNode(s.database, hash); len(blob) > 0 { + continue + } + // False positive, bump fault meter + bloomFaultMeter.Mark(1) + } + // Locally unknown node, schedule for retrieval + requests = append(requests, &request{ + path: child.path, + hash: hash, + parents: []*request{req}, + callback: req.callback, + }) + } + } + return requests, nil +} + +// commit finalizes a retrieval request and stores it into the membatch. If any +// of the referencing parent requests complete due to this commit, they are also +// committed themselves. +func (s *Sync) commit(req *request) (err error) { + // Write the node content to the membatch + if req.code { + s.membatch.codes[req.hash] = req.data + delete(s.codeReqs, req.hash) + s.fetches[len(req.path)]-- + } else { + s.membatch.nodes[req.hash] = req.data + delete(s.nodeReqs, req.hash) + s.fetches[len(req.path)]-- + } + // Check all parents for completion + for _, parent := range req.parents { + parent.deps-- + if parent.deps == 0 { + if err := s.commit(parent); err != nil { + return err + } + } + } + return nil +} diff --git a/trie/sync_bloom.go b/trie/sync_bloom.go new file mode 100644 index 0000000000..62f2c59491 --- /dev/null +++ b/trie/sync_bloom.go @@ -0,0 +1,201 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "encoding/binary" + "fmt" + "sync" + "sync/atomic" + "time" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + bloomfilter "github.com/holiman/bloomfilter/v2" +) + +var ( + bloomAddMeter = metrics.NewRegisteredMeter("trie/bloom/add", nil) + bloomLoadMeter = metrics.NewRegisteredMeter("trie/bloom/load", nil) + bloomTestMeter = metrics.NewRegisteredMeter("trie/bloom/test", nil) + bloomMissMeter = metrics.NewRegisteredMeter("trie/bloom/miss", nil) + bloomFaultMeter = metrics.NewRegisteredMeter("trie/bloom/fault", nil) + bloomErrorGauge = metrics.NewRegisteredGauge("trie/bloom/error", nil) +) + +// SyncBloom is a bloom filter used during fast sync to quickly decide if a trie +// node or contract code already exists on disk or not. It self populates from the +// provided disk database on creation in a background thread and will only start +// returning live results once that's finished. +type SyncBloom struct { + bloom *bloomfilter.Filter + inited uint32 + closer sync.Once + closed uint32 + pend sync.WaitGroup + closeCh chan struct{} +} + +// NewSyncBloom creates a new bloom filter of the given size (in megabytes) and +// initializes it from the database. The bloom is hard coded to use 3 filters. +func NewSyncBloom(memory uint64, database ethdb.Iteratee) *SyncBloom { + // Create the bloom filter to track known trie nodes + bloom, err := bloomfilter.New(memory*1024*1024*8, 4) + if err != nil { + panic(fmt.Sprintf("failed to create bloom: %v", err)) + } + log.Info("Allocated fast sync bloom", "size", common.StorageSize(memory*1024*1024)) + + // Assemble the fast sync bloom and init it from previous sessions + b := &SyncBloom{ + bloom: bloom, + closeCh: make(chan struct{}), + } + b.pend.Add(2) + go func() { + defer b.pend.Done() + b.init(database) + }() + go func() { + defer b.pend.Done() + b.meter() + }() + return b +} + +// init iterates over the database, pushing every trie hash into the bloom filter. +func (b *SyncBloom) init(database ethdb.Iteratee) { + // Iterate over the database, but restart every now and again to avoid holding + // a persistent snapshot since fast sync can push a ton of data concurrently, + // bloating the disk. + // + // Note, this is fine, because everything inserted into leveldb by fast sync is + // also pushed into the bloom directly, so we're not missing anything when the + // iterator is swapped out for a new one. + it := database.NewIterator(nil, nil) + + var ( + start = time.Now() + swap = time.Now() + ) + for it.Next() && atomic.LoadUint32(&b.closed) == 0 { + // If the database entry is a trie node, add it to the bloom + key := it.Key() + if len(key) == common.HashLength { + b.bloom.AddHash(binary.BigEndian.Uint64(key)) + bloomLoadMeter.Mark(1) + } else if ok, hash := rawdb.IsCodeKey(key); ok { + // If the database entry is a contract code, add it to the bloom + b.bloom.AddHash(binary.BigEndian.Uint64(hash)) + bloomLoadMeter.Mark(1) + } + // If enough time elapsed since the last iterator swap, restart + if time.Since(swap) > 8*time.Second { + key := common.CopyBytes(it.Key()) + + it.Release() + it = database.NewIterator(nil, key) + + log.Info("Initializing state bloom", "items", b.bloom.N(), "errorrate", b.bloom.FalsePosititveProbability(), "elapsed", common.PrettyDuration(time.Since(start))) + swap = time.Now() + } + } + it.Release() + + // Mark the bloom filter inited and return + log.Info("Initialized state bloom", "items", b.bloom.N(), "errorrate", b.bloom.FalsePosititveProbability(), "elapsed", common.PrettyDuration(time.Since(start))) + atomic.StoreUint32(&b.inited, 1) +} + +// meter periodically recalculates the false positive error rate of the bloom +// filter and reports it in a metric. +func (b *SyncBloom) meter() { + // check every second + tick := time.NewTicker(1 * time.Second) + defer tick.Stop() + + for { + select { + case <-tick.C: + // Report the current error ration. No floats, lame, scale it up. + bloomErrorGauge.Update(int64(b.bloom.FalsePosititveProbability() * 100000)) + case <-b.closeCh: + return + } + } +} + +// Close terminates any background initializer still running and releases all the +// memory allocated for the bloom. +func (b *SyncBloom) Close() error { + b.closer.Do(func() { + // Ensure the initializer is stopped + atomic.StoreUint32(&b.closed, 1) + close(b.closeCh) + b.pend.Wait() + + // Wipe the bloom, but mark it "uninited" just in case someone attempts an access + log.Info("Deallocated state bloom", "items", b.bloom.N(), "errorrate", b.bloom.FalsePosititveProbability()) + + atomic.StoreUint32(&b.inited, 0) + b.bloom = nil + }) + return nil +} + +// Add inserts a new trie node hash into the bloom filter. +func (b *SyncBloom) Add(hash []byte) { + if atomic.LoadUint32(&b.closed) == 1 { + return + } + b.bloom.AddHash(binary.BigEndian.Uint64(hash)) + bloomAddMeter.Mark(1) +} + +// Contains tests if the bloom filter contains the given hash: +// - false: the bloom definitely does not contain hash +// - true: the bloom maybe contains hash +// +// While the bloom is being initialized, any query will return true. +func (b *SyncBloom) Contains(hash []byte) bool { + bloomTestMeter.Mark(1) + if atomic.LoadUint32(&b.inited) == 0 { + // We didn't load all the trie nodes from the previous run of Geth yet. As + // such, we can't say for sure if a hash is not present for anything. Until + // the init is done, we're faking "possible presence" for everything. + return true + } + // Bloom initialized, check the real one and report any successful misses + maybe := b.bloom.ContainsHash(binary.BigEndian.Uint64(hash)) + if !maybe { + bloomMissMeter.Mark(1) + } + return maybe +} diff --git a/trie/sync_test.go b/trie/sync_test.go new file mode 100644 index 0000000000..582a49707a --- /dev/null +++ b/trie/sync_test.go @@ -0,0 +1,488 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2015 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "testing" + + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" +) + +// makeTestTrie create a sample test trie to test node-wise reconstruction. +func makeTestTrie() (*Database, *SecureTrie, map[string][]byte) { + // Create an empty trie + triedb := NewDatabase(memorydb.New()) + trie, _ := NewSecure(common.Hash{}, triedb) + + // Fill it with some arbitrary data + content := make(map[string][]byte) + for i := byte(0); i < 255; i++ { + // Map the same data under multiple keys + key, val := common.LeftPadBytes([]byte{1, i}, 32), []byte{i} + content[string(key)] = val + trie.Update(key, val) + + key, val = common.LeftPadBytes([]byte{2, i}, 32), []byte{i} + content[string(key)] = val + trie.Update(key, val) + + // Add some other data to inflate the trie + for j := byte(3); j < 13; j++ { + key, val = common.LeftPadBytes([]byte{j, i}, 32), []byte{j, i} + content[string(key)] = val + trie.Update(key, val) + } + } + trie.Commit(nil) + + // Return the generated trie + return triedb, trie, content +} + +// checkTrieContents cross references a reconstructed trie with an expected data +// content map. +func checkTrieContents(t *testing.T, db *Database, root []byte, content map[string][]byte) { + // Check root availability and trie contents + trie, err := NewSecure(common.BytesToHash(root), db) + if err != nil { + t.Fatalf("failed to create trie at %x: %v", root, err) + } + if err := checkTrieConsistency(db, common.BytesToHash(root)); err != nil { + t.Fatalf("inconsistent trie at %x: %v", root, err) + } + for key, val := range content { + if have := trie.Get([]byte(key)); !bytes.Equal(have, val) { + t.Errorf("entry %x: content mismatch: have %x, want %x", key, have, val) + } + } +} + +// checkTrieConsistency checks that all nodes in a trie are indeed present. +func checkTrieConsistency(db *Database, root common.Hash) error { + // Create and iterate a trie rooted in a subnode + trie, err := NewSecure(root, db) + if err != nil { + return nil // Consider a non existent state consistent + } + it := trie.NodeIterator(nil) + for it.Next(true) { + } + return it.Error() +} + +// Tests that an empty trie is not scheduled for syncing. +func TestEmptySync(t *testing.T) { + dbA := NewDatabase(memorydb.New()) + dbB := NewDatabase(memorydb.New()) + emptyA, _ := New(common.Hash{}, dbA) + emptyB, _ := New(emptyRoot, dbB) + + for i, trie := range []*Trie{emptyA, emptyB} { + sync := NewSync(trie.Hash(), memorydb.New(), nil, NewSyncBloom(1, memorydb.New())) + if nodes, paths, codes := sync.Missing(1); len(nodes) != 0 || len(paths) != 0 || len(codes) != 0 { + t.Errorf("test %d: content requested for empty trie: %v, %v, %v", i, nodes, paths, codes) + } + } +} + +// Tests that given a root hash, a trie can sync iteratively on a single thread, +// requesting retrieval tasks and returning all of them in one go. +func TestIterativeSyncIndividual(t *testing.T) { testIterativeSync(t, 1, false) } +func TestIterativeSyncBatched(t *testing.T) { testIterativeSync(t, 100, false) } +func TestIterativeSyncIndividualByPath(t *testing.T) { testIterativeSync(t, 1, true) } +func TestIterativeSyncBatchedByPath(t *testing.T) { testIterativeSync(t, 100, true) } + +func testIterativeSync(t *testing.T, count int, bypath bool) { + // Create a random trie to copy + srcDb, srcTrie, srcData := makeTestTrie() + + // Create a destination trie and sync with the scheduler + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + sched := NewSync(srcTrie.Hash(), diskdb, nil, NewSyncBloom(1, diskdb)) + + nodes, paths, codes := sched.Missing(count) + var ( + hashQueue []common.Hash + pathQueue []SyncPath + ) + if !bypath { + hashQueue = append(append(hashQueue[:0], nodes...), codes...) + } else { + hashQueue = append(hashQueue[:0], codes...) + pathQueue = append(pathQueue[:0], paths...) + } + for len(hashQueue)+len(pathQueue) > 0 { + results := make([]SyncResult, len(hashQueue)+len(pathQueue)) + for i, hash := range hashQueue { + data, err := srcDb.Node(hash) + if err != nil { + t.Fatalf("failed to retrieve node data for hash %x: %v", hash, err) + } + results[i] = SyncResult{hash, data} + } + for i, path := range pathQueue { + data, _, err := srcTrie.TryGetNode(path[0]) + if err != nil { + t.Fatalf("failed to retrieve node data for path %x: %v", path, err) + } + results[len(hashQueue)+i] = SyncResult{crypto.Keccak256Hash(data), data} + } + for _, result := range results { + if err := sched.Process(result); err != nil { + t.Fatalf("failed to process result %v", err) + } + } + batch := diskdb.NewBatch() + if err := sched.Commit(batch); err != nil { + t.Fatalf("failed to commit data: %v", err) + } + batch.Write() + + nodes, paths, codes = sched.Missing(count) + if !bypath { + hashQueue = append(append(hashQueue[:0], nodes...), codes...) + } else { + hashQueue = append(hashQueue[:0], codes...) + pathQueue = append(pathQueue[:0], paths...) + } + } + // Cross check that the two tries are in sync + checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData) +} + +// Tests that the trie scheduler can correctly reconstruct the state even if only +// partial results are returned, and the others sent only later. +func TestIterativeDelayedSync(t *testing.T) { + // Create a random trie to copy + srcDb, srcTrie, srcData := makeTestTrie() + + // Create a destination trie and sync with the scheduler + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + sched := NewSync(srcTrie.Hash(), diskdb, nil, NewSyncBloom(1, diskdb)) + + nodes, _, codes := sched.Missing(10000) + queue := append(append([]common.Hash{}, nodes...), codes...) + + for len(queue) > 0 { + // Sync only half of the scheduled nodes + results := make([]SyncResult, len(queue)/2+1) + for i, hash := range queue[:len(results)] { + data, err := srcDb.Node(hash) + if err != nil { + t.Fatalf("failed to retrieve node data for %x: %v", hash, err) + } + results[i] = SyncResult{hash, data} + } + for _, result := range results { + if err := sched.Process(result); err != nil { + t.Fatalf("failed to process result %v", err) + } + } + batch := diskdb.NewBatch() + if err := sched.Commit(batch); err != nil { + t.Fatalf("failed to commit data: %v", err) + } + batch.Write() + + nodes, _, codes = sched.Missing(10000) + queue = append(append(queue[len(results):], nodes...), codes...) + } + // Cross check that the two tries are in sync + checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData) +} + +// Tests that given a root hash, a trie can sync iteratively on a single thread, +// requesting retrieval tasks and returning all of them in one go, however in a +// random order. +func TestIterativeRandomSyncIndividual(t *testing.T) { testIterativeRandomSync(t, 1) } +func TestIterativeRandomSyncBatched(t *testing.T) { testIterativeRandomSync(t, 100) } + +func testIterativeRandomSync(t *testing.T, count int) { + // Create a random trie to copy + srcDb, srcTrie, srcData := makeTestTrie() + + // Create a destination trie and sync with the scheduler + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + sched := NewSync(srcTrie.Hash(), diskdb, nil, NewSyncBloom(1, diskdb)) + + queue := make(map[common.Hash]struct{}) + nodes, _, codes := sched.Missing(count) + for _, hash := range append(nodes, codes...) { + queue[hash] = struct{}{} + } + for len(queue) > 0 { + // Fetch all the queued nodes in a random order + results := make([]SyncResult, 0, len(queue)) + for hash := range queue { + data, err := srcDb.Node(hash) + if err != nil { + t.Fatalf("failed to retrieve node data for %x: %v", hash, err) + } + results = append(results, SyncResult{hash, data}) + } + // Feed the retrieved results back and queue new tasks + for _, result := range results { + if err := sched.Process(result); err != nil { + t.Fatalf("failed to process result %v", err) + } + } + batch := diskdb.NewBatch() + if err := sched.Commit(batch); err != nil { + t.Fatalf("failed to commit data: %v", err) + } + batch.Write() + + queue = make(map[common.Hash]struct{}) + nodes, _, codes = sched.Missing(count) + for _, hash := range append(nodes, codes...) { + queue[hash] = struct{}{} + } + } + // Cross check that the two tries are in sync + checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData) +} + +// Tests that the trie scheduler can correctly reconstruct the state even if only +// partial results are returned (Even those randomly), others sent only later. +func TestIterativeRandomDelayedSync(t *testing.T) { + // Create a random trie to copy + srcDb, srcTrie, srcData := makeTestTrie() + + // Create a destination trie and sync with the scheduler + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + sched := NewSync(srcTrie.Hash(), diskdb, nil, NewSyncBloom(1, diskdb)) + + queue := make(map[common.Hash]struct{}) + nodes, _, codes := sched.Missing(10000) + for _, hash := range append(nodes, codes...) { + queue[hash] = struct{}{} + } + for len(queue) > 0 { + // Sync only half of the scheduled nodes, even those in random order + results := make([]SyncResult, 0, len(queue)/2+1) + for hash := range queue { + data, err := srcDb.Node(hash) + if err != nil { + t.Fatalf("failed to retrieve node data for %x: %v", hash, err) + } + results = append(results, SyncResult{hash, data}) + + if len(results) >= cap(results) { + break + } + } + // Feed the retrieved results back and queue new tasks + for _, result := range results { + if err := sched.Process(result); err != nil { + t.Fatalf("failed to process result %v", err) + } + } + batch := diskdb.NewBatch() + if err := sched.Commit(batch); err != nil { + t.Fatalf("failed to commit data: %v", err) + } + batch.Write() + for _, result := range results { + delete(queue, result.Hash) + } + nodes, _, codes = sched.Missing(10000) + for _, hash := range append(nodes, codes...) { + queue[hash] = struct{}{} + } + } + // Cross check that the two tries are in sync + checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData) +} + +// Tests that a trie sync will not request nodes multiple times, even if they +// have such references. +func TestDuplicateAvoidanceSync(t *testing.T) { + // Create a random trie to copy + srcDb, srcTrie, srcData := makeTestTrie() + + // Create a destination trie and sync with the scheduler + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + sched := NewSync(srcTrie.Hash(), diskdb, nil, NewSyncBloom(1, diskdb)) + + nodes, _, codes := sched.Missing(0) + queue := append(append([]common.Hash{}, nodes...), codes...) + requested := make(map[common.Hash]struct{}) + + for len(queue) > 0 { + results := make([]SyncResult, len(queue)) + for i, hash := range queue { + data, err := srcDb.Node(hash) + if err != nil { + t.Fatalf("failed to retrieve node data for %x: %v", hash, err) + } + if _, ok := requested[hash]; ok { + t.Errorf("hash %x already requested once", hash) + } + requested[hash] = struct{}{} + + results[i] = SyncResult{hash, data} + } + for _, result := range results { + if err := sched.Process(result); err != nil { + t.Fatalf("failed to process result %v", err) + } + } + batch := diskdb.NewBatch() + if err := sched.Commit(batch); err != nil { + t.Fatalf("failed to commit data: %v", err) + } + batch.Write() + + nodes, _, codes = sched.Missing(0) + queue = append(append(queue[:0], nodes...), codes...) + } + // Cross check that the two tries are in sync + checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData) +} + +// Tests that at any point in time during a sync, only complete sub-tries are in +// the database. +func TestIncompleteSync(t *testing.T) { + // Create a random trie to copy + srcDb, srcTrie, _ := makeTestTrie() + + // Create a destination trie and sync with the scheduler + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + sched := NewSync(srcTrie.Hash(), diskdb, nil, NewSyncBloom(1, diskdb)) + + var added []common.Hash + + nodes, _, codes := sched.Missing(1) + queue := append(append([]common.Hash{}, nodes...), codes...) + for len(queue) > 0 { + // Fetch a batch of trie nodes + results := make([]SyncResult, len(queue)) + for i, hash := range queue { + data, err := srcDb.Node(hash) + if err != nil { + t.Fatalf("failed to retrieve node data for %x: %v", hash, err) + } + results[i] = SyncResult{hash, data} + } + // Process each of the trie nodes + for _, result := range results { + if err := sched.Process(result); err != nil { + t.Fatalf("failed to process result %v", err) + } + } + batch := diskdb.NewBatch() + if err := sched.Commit(batch); err != nil { + t.Fatalf("failed to commit data: %v", err) + } + batch.Write() + for _, result := range results { + added = append(added, result.Hash) + // Check that all known sub-tries in the synced trie are complete + if err := checkTrieConsistency(triedb, result.Hash); err != nil { + t.Fatalf("trie inconsistent: %v", err) + } + } + // Fetch the next batch to retrieve + nodes, _, codes = sched.Missing(1) + queue = append(append(queue[:0], nodes...), codes...) + } + // Sanity check that removing any node from the database is detected + for _, node := range added[1:] { + key := node.Bytes() + value, _ := diskdb.Get(key) + + diskdb.Delete(key) + if err := checkTrieConsistency(triedb, added[0]); err == nil { + t.Fatalf("trie inconsistency not caught, missing: %x", key) + } + diskdb.Put(key, value) + } +} + +// Tests that trie nodes get scheduled lexicographically when having the same +// depth. +func TestSyncOrdering(t *testing.T) { + // Create a random trie to copy + srcDb, srcTrie, srcData := makeTestTrie() + + // Create a destination trie and sync with the scheduler, tracking the requests + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + sched := NewSync(srcTrie.Hash(), diskdb, nil, NewSyncBloom(1, diskdb)) + + nodes, paths, _ := sched.Missing(1) + queue := append([]common.Hash{}, nodes...) + reqs := append([]SyncPath{}, paths...) + + for len(queue) > 0 { + results := make([]SyncResult, len(queue)) + for i, hash := range queue { + data, err := srcDb.Node(hash) + if err != nil { + t.Fatalf("failed to retrieve node data for %x: %v", hash, err) + } + results[i] = SyncResult{hash, data} + } + for _, result := range results { + if err := sched.Process(result); err != nil { + t.Fatalf("failed to process result %v", err) + } + } + batch := diskdb.NewBatch() + if err := sched.Commit(batch); err != nil { + t.Fatalf("failed to commit data: %v", err) + } + batch.Write() + + nodes, paths, _ = sched.Missing(1) + queue = append(queue[:0], nodes...) + reqs = append(reqs, paths...) + } + // Cross check that the two tries are in sync + checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData) + + // Check that the trie nodes have been requested path-ordered + for i := 0; i < len(reqs)-1; i++ { + if len(reqs[i]) > 1 || len(reqs[i+1]) > 1 { + // In the case of the trie tests, there's no storage so the tuples + // must always be single items. 2-tuples should be tested in state. + t.Errorf("Invalid request tuples: len(%v) or len(%v) > 1", reqs[i], reqs[i+1]) + } + if bytes.Compare(compactToHex(reqs[i][0]), compactToHex(reqs[i+1][0])) > 0 { + t.Errorf("Invalid request order: %v before %v", compactToHex(reqs[i][0]), compactToHex(reqs[i+1][0])) + } + } +} diff --git a/trie/trie.go b/trie/trie.go new file mode 100644 index 0000000000..04169cb52c --- /dev/null +++ b/trie/trie.go @@ -0,0 +1,599 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package trie implements Merkle Patricia Tries. +package trie + +import ( + "bytes" + "errors" + "fmt" + "sync" + + "github.com/ava-labs/subnet-evm/core/types" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rlp" +) + +var ( + // emptyRoot is the known root hash of an empty trie. + emptyRoot = common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421") + + // emptyState is the known hash of an empty state trie entry. + emptyState = crypto.Keccak256Hash(nil) +) + +// LeafCallback is a callback type invoked when a trie operation reaches a leaf +// node. +// +// The paths is a path tuple identifying a particular trie node either in a single +// trie (account) or a layered trie (account -> storage). Each path in the tuple +// is in the raw format(32 bytes). +// +// The hexpath is a composite hexary path identifying the trie node. All the key +// bytes are converted to the hexary nibbles and composited with the parent path +// if the trie node is in a layered trie. +// +// It's used by state sync and commit to allow handling external references +// between account and storage tries. And also it's used in the state healing +// for extracting the raw states(leaf nodes) with corresponding paths. +type LeafCallback func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error + +// Trie is a Merkle Patricia Trie. +// The zero value is an empty trie with no database. +// Use New to create a trie that sits on top of a database. +// +// Trie is not safe for concurrent use. +type Trie struct { + db *Database + root node + // Keep track of the number leafs which have been inserted since the last + // hashing operation. This number will not directly map to the number of + // actually unhashed nodes + unhashed int +} + +// newFlag returns the cache flag value for a newly created node. +func (t *Trie) newFlag() nodeFlag { + return nodeFlag{dirty: true} +} + +// New creates a trie with an existing root node from db. +// +// If root is the zero hash or the sha3 hash of an empty string, the +// trie is initially empty and does not require a database. Otherwise, +// New will panic if db is nil and returns a MissingNodeError if root does +// not exist in the database. Accessing the trie loads nodes from db on demand. +func New(root common.Hash, db *Database) (*Trie, error) { + if db == nil { + panic("trie.New called without a database") + } + trie := &Trie{ + db: db, + } + if root != (common.Hash{}) && root != emptyRoot { + rootnode, err := trie.resolveHash(root[:], nil) + if err != nil { + return nil, err + } + trie.root = rootnode + } + return trie, nil +} + +// NodeIterator returns an iterator that returns nodes of the trie. Iteration starts at +// the key after the given start key. +func (t *Trie) NodeIterator(start []byte) NodeIterator { + return newNodeIterator(t, start) +} + +// Get returns the value for key stored in the trie. +// The value bytes must not be modified by the caller. +func (t *Trie) Get(key []byte) []byte { + res, err := t.TryGet(key) + if err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + } + return res +} + +// TryGet returns the value for key stored in the trie. +// The value bytes must not be modified by the caller. +// If a node was not found in the database, a MissingNodeError is returned. +func (t *Trie) TryGet(key []byte) ([]byte, error) { + value, newroot, didResolve, err := t.tryGet(t.root, keybytesToHex(key), 0) + if err == nil && didResolve { + t.root = newroot + } + return value, err +} + +func (t *Trie) tryGet(origNode node, key []byte, pos int) (value []byte, newnode node, didResolve bool, err error) { + switch n := (origNode).(type) { + case nil: + return nil, nil, false, nil + case valueNode: + return n, n, false, nil + case *shortNode: + if len(key)-pos < len(n.Key) || !bytes.Equal(n.Key, key[pos:pos+len(n.Key)]) { + // key not found in trie + return nil, n, false, nil + } + value, newnode, didResolve, err = t.tryGet(n.Val, key, pos+len(n.Key)) + if err == nil && didResolve { + n = n.copy() + n.Val = newnode + } + return value, n, didResolve, err + case *fullNode: + value, newnode, didResolve, err = t.tryGet(n.Children[key[pos]], key, pos+1) + if err == nil && didResolve { + n = n.copy() + n.Children[key[pos]] = newnode + } + return value, n, didResolve, err + case hashNode: + child, err := t.resolveHash(n, key[:pos]) + if err != nil { + return nil, n, true, err + } + value, newnode, _, err := t.tryGet(child, key, pos) + return value, newnode, true, err + default: + panic(fmt.Sprintf("%T: invalid node: %v", origNode, origNode)) + } +} + +// TryGetNode attempts to retrieve a trie node by compact-encoded path. It is not +// possible to use keybyte-encoding as the path might contain odd nibbles. +func (t *Trie) TryGetNode(path []byte) ([]byte, int, error) { + item, newroot, resolved, err := t.tryGetNode(t.root, compactToHex(path), 0) + if err != nil { + return nil, resolved, err + } + if resolved > 0 { + t.root = newroot + } + if item == nil { + return nil, resolved, nil + } + return item, resolved, err +} + +func (t *Trie) tryGetNode(origNode node, path []byte, pos int) (item []byte, newnode node, resolved int, err error) { + // If non-existent path requested, abort + if origNode == nil { + return nil, nil, 0, nil + } + // If we reached the requested path, return the current node + if pos >= len(path) { + // Although we most probably have the original node expanded, encoding + // that into consensus form can be nasty (needs to cascade down) and + // time consuming. Instead, just pull the hash up from disk directly. + var hash hashNode + if node, ok := origNode.(hashNode); ok { + hash = node + } else { + hash, _ = origNode.cache() + } + if hash == nil { + return nil, origNode, 0, errors.New("non-consensus node") + } + blob, err := t.db.Node(common.BytesToHash(hash)) + return blob, origNode, 1, err + } + // Path still needs to be traversed, descend into children + switch n := (origNode).(type) { + case valueNode: + // Path prematurely ended, abort + return nil, nil, 0, nil + + case *shortNode: + if len(path)-pos < len(n.Key) || !bytes.Equal(n.Key, path[pos:pos+len(n.Key)]) { + // Path branches off from short node + return nil, n, 0, nil + } + item, newnode, resolved, err = t.tryGetNode(n.Val, path, pos+len(n.Key)) + if err == nil && resolved > 0 { + n = n.copy() + n.Val = newnode + } + return item, n, resolved, err + + case *fullNode: + item, newnode, resolved, err = t.tryGetNode(n.Children[path[pos]], path, pos+1) + if err == nil && resolved > 0 { + n = n.copy() + n.Children[path[pos]] = newnode + } + return item, n, resolved, err + + case hashNode: + child, err := t.resolveHash(n, path[:pos]) + if err != nil { + return nil, n, 1, err + } + item, newnode, resolved, err := t.tryGetNode(child, path, pos) + return item, newnode, resolved + 1, err + + default: + panic(fmt.Sprintf("%T: invalid node: %v", origNode, origNode)) + } +} + +// Update associates key with value in the trie. Subsequent calls to +// Get will return value. If value has length zero, any existing value +// is deleted from the trie and calls to Get will return nil. +// +// The value bytes must not be modified by the caller while they are +// stored in the trie. +func (t *Trie) Update(key, value []byte) { + if err := t.TryUpdate(key, value); err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + } +} + +func (t *Trie) TryUpdateAccount(key []byte, acc *types.StateAccount) error { + data, err := rlp.EncodeToBytes(acc) + if err != nil { + return fmt.Errorf("can't encode object at %x: %w", key[:], err) + } + return t.TryUpdate(key, data) +} + +// TryUpdate associates key with value in the trie. Subsequent calls to +// Get will return value. If value has length zero, any existing value +// is deleted from the trie and calls to Get will return nil. +// +// The value bytes must not be modified by the caller while they are +// stored in the trie. +// +// If a node was not found in the database, a MissingNodeError is returned. +func (t *Trie) TryUpdate(key, value []byte) error { + t.unhashed++ + k := keybytesToHex(key) + if len(value) != 0 { + _, n, err := t.insert(t.root, nil, k, valueNode(value)) + if err != nil { + return err + } + t.root = n + } else { + _, n, err := t.delete(t.root, nil, k) + if err != nil { + return err + } + t.root = n + } + return nil +} + +func (t *Trie) insert(n node, prefix, key []byte, value node) (bool, node, error) { + if len(key) == 0 { + if v, ok := n.(valueNode); ok { + return !bytes.Equal(v, value.(valueNode)), value, nil + } + return true, value, nil + } + switch n := n.(type) { + case *shortNode: + matchlen := prefixLen(key, n.Key) + // If the whole key matches, keep this short node as is + // and only update the value. + if matchlen == len(n.Key) { + dirty, nn, err := t.insert(n.Val, append(prefix, key[:matchlen]...), key[matchlen:], value) + if !dirty || err != nil { + return false, n, err + } + return true, &shortNode{n.Key, nn, t.newFlag()}, nil + } + // Otherwise branch out at the index where they differ. + branch := &fullNode{flags: t.newFlag()} + var err error + _, branch.Children[n.Key[matchlen]], err = t.insert(nil, append(prefix, n.Key[:matchlen+1]...), n.Key[matchlen+1:], n.Val) + if err != nil { + return false, nil, err + } + _, branch.Children[key[matchlen]], err = t.insert(nil, append(prefix, key[:matchlen+1]...), key[matchlen+1:], value) + if err != nil { + return false, nil, err + } + // Replace this shortNode with the branch if it occurs at index 0. + if matchlen == 0 { + return true, branch, nil + } + // Otherwise, replace it with a short node leading up to the branch. + return true, &shortNode{key[:matchlen], branch, t.newFlag()}, nil + + case *fullNode: + dirty, nn, err := t.insert(n.Children[key[0]], append(prefix, key[0]), key[1:], value) + if !dirty || err != nil { + return false, n, err + } + n = n.copy() + n.flags = t.newFlag() + n.Children[key[0]] = nn + return true, n, nil + + case nil: + return true, &shortNode{key, value, t.newFlag()}, nil + + case hashNode: + // We've hit a part of the trie that isn't loaded yet. Load + // the node and insert into it. This leaves all child nodes on + // the path to the value in the trie. + rn, err := t.resolveHash(n, prefix) + if err != nil { + return false, nil, err + } + dirty, nn, err := t.insert(rn, prefix, key, value) + if !dirty || err != nil { + return false, rn, err + } + return true, nn, nil + + default: + panic(fmt.Sprintf("%T: invalid node: %v", n, n)) + } +} + +// Delete removes any existing value for key from the trie. +func (t *Trie) Delete(key []byte) { + if err := t.TryDelete(key); err != nil { + log.Error(fmt.Sprintf("Unhandled trie error: %v", err)) + } +} + +// TryDelete removes any existing value for key from the trie. +// If a node was not found in the database, a MissingNodeError is returned. +func (t *Trie) TryDelete(key []byte) error { + t.unhashed++ + k := keybytesToHex(key) + _, n, err := t.delete(t.root, nil, k) + if err != nil { + return err + } + t.root = n + return nil +} + +// delete returns the new root of the trie with key deleted. +// It reduces the trie to minimal form by simplifying +// nodes on the way up after deleting recursively. +func (t *Trie) delete(n node, prefix, key []byte) (bool, node, error) { + switch n := n.(type) { + case *shortNode: + matchlen := prefixLen(key, n.Key) + if matchlen < len(n.Key) { + return false, n, nil // don't replace n on mismatch + } + if matchlen == len(key) { + return true, nil, nil // remove n entirely for whole matches + } + // The key is longer than n.Key. Remove the remaining suffix + // from the subtrie. Child can never be nil here since the + // subtrie must contain at least two other values with keys + // longer than n.Key. + dirty, child, err := t.delete(n.Val, append(prefix, key[:len(n.Key)]...), key[len(n.Key):]) + if !dirty || err != nil { + return false, n, err + } + switch child := child.(type) { + case *shortNode: + // Deleting from the subtrie reduced it to another + // short node. Merge the nodes to avoid creating a + // shortNode{..., shortNode{...}}. Use concat (which + // always creates a new slice) instead of append to + // avoid modifying n.Key since it might be shared with + // other nodes. + return true, &shortNode{concat(n.Key, child.Key...), child.Val, t.newFlag()}, nil + default: + return true, &shortNode{n.Key, child, t.newFlag()}, nil + } + + case *fullNode: + dirty, nn, err := t.delete(n.Children[key[0]], append(prefix, key[0]), key[1:]) + if !dirty || err != nil { + return false, n, err + } + n = n.copy() + n.flags = t.newFlag() + n.Children[key[0]] = nn + + // Because n is a full node, it must've contained at least two children + // before the delete operation. If the new child value is non-nil, n still + // has at least two children after the deletion, and cannot be reduced to + // a short node. + if nn != nil { + return true, n, nil + } + // Reduction: + // Check how many non-nil entries are left after deleting and + // reduce the full node to a short node if only one entry is + // left. Since n must've contained at least two children + // before deletion (otherwise it would not be a full node) n + // can never be reduced to nil. + // + // When the loop is done, pos contains the index of the single + // value that is left in n or -2 if n contains at least two + // values. + pos := -1 + for i, cld := range &n.Children { + if cld != nil { + if pos == -1 { + pos = i + } else { + pos = -2 + break + } + } + } + if pos >= 0 { + if pos != 16 { + // If the remaining entry is a short node, it replaces + // n and its key gets the missing nibble tacked to the + // front. This avoids creating an invalid + // shortNode{..., shortNode{...}}. Since the entry + // might not be loaded yet, resolve it just for this + // check. + cnode, err := t.resolve(n.Children[pos], prefix) + if err != nil { + return false, nil, err + } + if cnode, ok := cnode.(*shortNode); ok { + k := append([]byte{byte(pos)}, cnode.Key...) + return true, &shortNode{k, cnode.Val, t.newFlag()}, nil + } + } + // Otherwise, n is replaced by a one-nibble short node + // containing the child. + return true, &shortNode{[]byte{byte(pos)}, n.Children[pos], t.newFlag()}, nil + } + // n still contains at least two values and cannot be reduced. + return true, n, nil + + case valueNode: + return true, nil, nil + + case nil: + return false, nil, nil + + case hashNode: + // We've hit a part of the trie that isn't loaded yet. Load + // the node and delete from it. This leaves all child nodes on + // the path to the value in the trie. + rn, err := t.resolveHash(n, prefix) + if err != nil { + return false, nil, err + } + dirty, nn, err := t.delete(rn, prefix, key) + if !dirty || err != nil { + return false, rn, err + } + return true, nn, nil + + default: + panic(fmt.Sprintf("%T: invalid node: %v (%v)", n, n, key)) + } +} + +func concat(s1 []byte, s2 ...byte) []byte { + r := make([]byte, len(s1)+len(s2)) + copy(r, s1) + copy(r[len(s1):], s2) + return r +} + +func (t *Trie) resolve(n node, prefix []byte) (node, error) { + if n, ok := n.(hashNode); ok { + return t.resolveHash(n, prefix) + } + return n, nil +} + +func (t *Trie) resolveHash(n hashNode, prefix []byte) (node, error) { + hash := common.BytesToHash(n) + if node := t.db.node(hash); node != nil { + return node, nil + } + return nil, &MissingNodeError{NodeHash: hash, Path: prefix} +} + +// Hash returns the root hash of the trie. It does not write to the +// database and can be used even if the trie doesn't have one. +func (t *Trie) Hash() common.Hash { + hash, cached, _ := t.hashRoot() + t.root = cached + return common.BytesToHash(hash.(hashNode)) +} + +// Commit writes all nodes to the trie's memory database, tracking the internal +// and external (for account tries) references. +func (t *Trie) Commit(onleaf LeafCallback) (common.Hash, int, error) { + if t.db == nil { + panic("commit called on trie with nil database") + } + if t.root == nil { + return emptyRoot, 0, nil + } + // Derive the hash for all dirty nodes first. We hold the assumption + // in the following procedure that all nodes are hashed. + rootHash := t.Hash() + h := newCommitter() + defer returnCommitterToPool(h) + + // Do a quick check if we really need to commit, before we spin + // up goroutines. This can happen e.g. if we load a trie for reading storage + // values, but don't write to it. + if _, dirty := t.root.cache(); !dirty { + return rootHash, 0, nil + } + var wg sync.WaitGroup + if onleaf != nil { + h.onleaf = onleaf + h.leafCh = make(chan *leaf, leafChanSize) + wg.Add(1) + go func() { + defer wg.Done() + h.commitLoop(t.db) + }() + } + newRoot, committed, err := h.Commit(t.root, t.db) + if onleaf != nil { + // The leafch is created in newCommitter if there was an onleaf callback + // provided. The commitLoop only _reads_ from it, and the commit + // operation was the sole writer. Therefore, it's safe to close this + // channel here. + close(h.leafCh) + wg.Wait() + } + if err != nil { + return common.Hash{}, 0, err + } + t.root = newRoot + return rootHash, committed, nil +} + +// hashRoot calculates the root hash of the given trie +func (t *Trie) hashRoot() (node, node, error) { + if t.root == nil { + return hashNode(emptyRoot.Bytes()), nil, nil + } + // If the number of changes is below 100, we let one thread handle it + h := newHasher(t.unhashed >= 100) + defer returnHasherToPool(h) + hashed, cached := h.hash(t.root, true) + t.unhashed = 0 + return hashed, cached, nil +} + +// Reset drops the referenced root node and cleans all internal state. +func (t *Trie) Reset() { + t.root = nil + t.unhashed = 0 +} diff --git a/trie/trie_test.go b/trie/trie_test.go new file mode 100644 index 0000000000..ee0380b59e --- /dev/null +++ b/trie/trie_test.go @@ -0,0 +1,1100 @@ +// (c) 2020-2021, Ava Labs, Inc. +// +// This file is a derived work, based on the go-ethereum library whose original +// notices appear below. +// +// It is distributed under a license compatible with the licensing terms of the +// original code from which it is derived. +// +// Much love to the original authors for their work. +// ********** +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package trie + +import ( + "bytes" + "encoding/binary" + "errors" + "fmt" + "hash" + "math/big" + "math/rand" + "reflect" + "testing" + "testing/quick" + + "github.com/ava-labs/subnet-evm/core/rawdb" + "github.com/ava-labs/subnet-evm/ethdb" + "github.com/ava-labs/subnet-evm/ethdb/memorydb" + "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/rlp" + "golang.org/x/crypto/sha3" +) + +func init() { + spew.Config.Indent = " " + spew.Config.DisableMethods = false +} + +// Used for testing +func newEmpty() *Trie { + trie, _ := New(common.Hash{}, NewDatabase(memorydb.New())) + return trie +} + +func TestEmptyTrie(t *testing.T) { + var trie Trie + res := trie.Hash() + exp := emptyRoot + if res != exp { + t.Errorf("expected %x got %x", exp, res) + } +} + +func TestNull(t *testing.T) { + var trie Trie + key := make([]byte, 32) + value := []byte("test") + trie.Update(key, value) + if !bytes.Equal(trie.Get(key), value) { + t.Fatal("wrong value") + } +} + +func TestMissingRoot(t *testing.T) { + trie, err := New(common.HexToHash("0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"), NewDatabase(memorydb.New())) + if trie != nil { + t.Error("New returned non-nil trie for invalid root") + } + if _, ok := err.(*MissingNodeError); !ok { + t.Errorf("New returned wrong error: %v", err) + } +} + +func TestMissingNodeDisk(t *testing.T) { testMissingNode(t, false) } +func TestMissingNodeMemonly(t *testing.T) { testMissingNode(t, true) } + +func testMissingNode(t *testing.T, memonly bool) { + diskdb := memorydb.New() + triedb := NewDatabase(diskdb) + + trie, _ := New(common.Hash{}, triedb) + updateString(trie, "120000", "qwerqwerqwerqwerqwerqwerqwerqwer") + updateString(trie, "123456", "asdfasdfasdfasdfasdfasdfasdfasdf") + root, _, _ := trie.Commit(nil) + if !memonly { + triedb.Commit(root, true, nil) + } + + trie, _ = New(root, triedb) + _, err := trie.TryGet([]byte("120000")) + if err != nil { + t.Errorf("Unexpected error: %v", err) + } + trie, _ = New(root, triedb) + _, err = trie.TryGet([]byte("120099")) + if err != nil { + t.Errorf("Unexpected error: %v", err) + } + trie, _ = New(root, triedb) + _, err = trie.TryGet([]byte("123456")) + if err != nil { + t.Errorf("Unexpected error: %v", err) + } + trie, _ = New(root, triedb) + err = trie.TryUpdate([]byte("120099"), []byte("zxcvzxcvzxcvzxcvzxcvzxcvzxcvzxcv")) + if err != nil { + t.Errorf("Unexpected error: %v", err) + } + trie, _ = New(root, triedb) + err = trie.TryDelete([]byte("123456")) + if err != nil { + t.Errorf("Unexpected error: %v", err) + } + + hash := common.HexToHash("0xe1d943cc8f061a0c0b98162830b970395ac9315654824bf21b73b891365262f9") + if memonly { + delete(triedb.dirties, hash) + } else { + diskdb.Delete(hash[:]) + } + + trie, _ = New(root, triedb) + _, err = trie.TryGet([]byte("120000")) + if _, ok := err.(*MissingNodeError); !ok { + t.Errorf("Wrong error: %v", err) + } + trie, _ = New(root, triedb) + _, err = trie.TryGet([]byte("120099")) + if _, ok := err.(*MissingNodeError); !ok { + t.Errorf("Wrong error: %v", err) + } + trie, _ = New(root, triedb) + _, err = trie.TryGet([]byte("123456")) + if err != nil { + t.Errorf("Unexpected error: %v", err) + } + trie, _ = New(root, triedb) + err = trie.TryUpdate([]byte("120099"), []byte("zxcv")) + if _, ok := err.(*MissingNodeError); !ok { + t.Errorf("Wrong error: %v", err) + } + trie, _ = New(root, triedb) + err = trie.TryDelete([]byte("123456")) + if _, ok := err.(*MissingNodeError); !ok { + t.Errorf("Wrong error: %v", err) + } +} + +func TestInsert(t *testing.T) { + trie := newEmpty() + + updateString(trie, "doe", "reindeer") + updateString(trie, "dog", "puppy") + updateString(trie, "dogglesworth", "cat") + + exp := common.HexToHash("8aad789dff2f538bca5d8ea56e8abe10f4c7ba3a5dea95fea4cd6e7c3a1168d3") + root := trie.Hash() + if root != exp { + t.Errorf("case 1: exp %x got %x", exp, root) + } + + trie = newEmpty() + updateString(trie, "A", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") + + exp = common.HexToHash("d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab") + root, _, err := trie.Commit(nil) + if err != nil { + t.Fatalf("commit error: %v", err) + } + if root != exp { + t.Errorf("case 2: exp %x got %x", exp, root) + } +} + +func TestGet(t *testing.T) { + trie := newEmpty() + updateString(trie, "doe", "reindeer") + updateString(trie, "dog", "puppy") + updateString(trie, "dogglesworth", "cat") + + for i := 0; i < 2; i++ { + res := getString(trie, "dog") + if !bytes.Equal(res, []byte("puppy")) { + t.Errorf("expected puppy got %x", res) + } + + unknown := getString(trie, "unknown") + if unknown != nil { + t.Errorf("expected nil got %x", unknown) + } + + if i == 1 { + return + } + trie.Commit(nil) + } +} + +func TestDelete(t *testing.T) { + trie := newEmpty() + vals := []struct{ k, v string }{ + {"do", "verb"}, + {"ether", "wookiedoo"}, + {"horse", "stallion"}, + {"shaman", "horse"}, + {"doge", "coin"}, + {"ether", ""}, + {"dog", "puppy"}, + {"shaman", ""}, + } + for _, val := range vals { + if val.v != "" { + updateString(trie, val.k, val.v) + } else { + deleteString(trie, val.k) + } + } + + hash := trie.Hash() + exp := common.HexToHash("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84") + if hash != exp { + t.Errorf("expected %x got %x", exp, hash) + } +} + +func TestEmptyValues(t *testing.T) { + trie := newEmpty() + + vals := []struct{ k, v string }{ + {"do", "verb"}, + {"ether", "wookiedoo"}, + {"horse", "stallion"}, + {"shaman", "horse"}, + {"doge", "coin"}, + {"ether", ""}, + {"dog", "puppy"}, + {"shaman", ""}, + } + for _, val := range vals { + updateString(trie, val.k, val.v) + } + + hash := trie.Hash() + exp := common.HexToHash("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84") + if hash != exp { + t.Errorf("expected %x got %x", exp, hash) + } +} + +func TestReplication(t *testing.T) { + trie := newEmpty() + vals := []struct{ k, v string }{ + {"do", "verb"}, + {"ether", "wookiedoo"}, + {"horse", "stallion"}, + {"shaman", "horse"}, + {"doge", "coin"}, + {"dog", "puppy"}, + {"somethingveryoddindeedthis is", "myothernodedata"}, + } + for _, val := range vals { + updateString(trie, val.k, val.v) + } + exp, _, err := trie.Commit(nil) + if err != nil { + t.Fatalf("commit error: %v", err) + } + + // create a new trie on top of the database and check that lookups work. + trie2, err := New(exp, trie.db) + if err != nil { + t.Fatalf("can't recreate trie at %x: %v", exp, err) + } + for _, kv := range vals { + if string(getString(trie2, kv.k)) != kv.v { + t.Errorf("trie2 doesn't have %q => %q", kv.k, kv.v) + } + } + hash, _, err := trie2.Commit(nil) + if err != nil { + t.Fatalf("commit error: %v", err) + } + if hash != exp { + t.Errorf("root failure. expected %x got %x", exp, hash) + } + + // perform some insertions on the new trie. + vals2 := []struct{ k, v string }{ + {"do", "verb"}, + {"ether", "wookiedoo"}, + {"horse", "stallion"}, + // {"shaman", "horse"}, + // {"doge", "coin"}, + // {"ether", ""}, + // {"dog", "puppy"}, + // {"somethingveryoddindeedthis is", "myothernodedata"}, + // {"shaman", ""}, + } + for _, val := range vals2 { + updateString(trie2, val.k, val.v) + } + if hash := trie2.Hash(); hash != exp { + t.Errorf("root failure. expected %x got %x", exp, hash) + } +} + +func TestLargeValue(t *testing.T) { + trie := newEmpty() + trie.Update([]byte("key1"), []byte{99, 99, 99, 99}) + trie.Update([]byte("key2"), bytes.Repeat([]byte{1}, 32)) + trie.Hash() +} + +// TestRandomCases tests som cases that were found via random fuzzing +func TestRandomCases(t *testing.T) { + rt := []randTestStep{ + {op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 0 + {op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 1 + {op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000002")}, // step 2 + {op: 2, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("")}, // step 3 + {op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 4 + {op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 5 + {op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 6 + {op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 7 + {op: 0, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("0000000000000008")}, // step 8 + {op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000009")}, // step 9 + {op: 2, key: common.Hex2Bytes("fd"), value: common.Hex2Bytes("")}, // step 10 + {op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 11 + {op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 12 + {op: 0, key: common.Hex2Bytes("fd"), value: common.Hex2Bytes("000000000000000d")}, // step 13 + {op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 14 + {op: 1, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("")}, // step 15 + {op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 16 + {op: 0, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("0000000000000011")}, // step 17 + {op: 5, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 18 + {op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 19 + {op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000014")}, // step 20 + {op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000015")}, // step 21 + {op: 0, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("0000000000000016")}, // step 22 + {op: 5, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 23 + {op: 1, key: common.Hex2Bytes("980c393656413a15c8da01978ed9f89feb80b502f58f2d640e3a2f5f7a99a7018f1b573befd92053ac6f78fca4a87268"), value: common.Hex2Bytes("")}, // step 24 + {op: 1, key: common.Hex2Bytes("fd"), value: common.Hex2Bytes("")}, // step 25 + } + runRandTest(rt) +} + +// randTest performs random trie operations. +// Instances of this test are created by Generate. +type randTest []randTestStep + +type randTestStep struct { + op int + key []byte // for opUpdate, opDelete, opGet + value []byte // for opUpdate + err error // for debugging +} + +const ( + opUpdate = iota + opDelete + opGet + opCommit + opHash + opReset + opItercheckhash + opMax // boundary value, not an actual op +) + +func (randTest) Generate(r *rand.Rand, size int) reflect.Value { + var allKeys [][]byte + genKey := func() []byte { + if len(allKeys) < 2 || r.Intn(100) < 10 { + // new key + key := make([]byte, r.Intn(50)) + r.Read(key) + allKeys = append(allKeys, key) + return key + } + // use existing key + return allKeys[r.Intn(len(allKeys))] + } + + var steps randTest + for i := 0; i < size; i++ { + step := randTestStep{op: r.Intn(opMax)} + switch step.op { + case opUpdate: + step.key = genKey() + step.value = make([]byte, 8) + binary.BigEndian.PutUint64(step.value, uint64(i)) + case opGet, opDelete: + step.key = genKey() + } + steps = append(steps, step) + } + return reflect.ValueOf(steps) +} + +func runRandTest(rt randTest) bool { + triedb := NewDatabase(memorydb.New()) + + tr, _ := New(common.Hash{}, triedb) + values := make(map[string]string) // tracks content of the trie + + for i, step := range rt { + fmt.Printf("{op: %d, key: common.Hex2Bytes(\"%x\"), value: common.Hex2Bytes(\"%x\")}, // step %d\n", + step.op, step.key, step.value, i) + switch step.op { + case opUpdate: + tr.Update(step.key, step.value) + values[string(step.key)] = string(step.value) + case opDelete: + tr.Delete(step.key) + delete(values, string(step.key)) + case opGet: + v := tr.Get(step.key) + want := values[string(step.key)] + if string(v) != want { + rt[i].err = fmt.Errorf("mismatch for key 0x%x, got 0x%x want 0x%x", step.key, v, want) + } + case opCommit: + _, _, rt[i].err = tr.Commit(nil) + case opHash: + tr.Hash() + case opReset: + hash, _, err := tr.Commit(nil) + if err != nil { + rt[i].err = err + return false + } + newtr, err := New(hash, triedb) + if err != nil { + rt[i].err = err + return false + } + tr = newtr + case opItercheckhash: + checktr, _ := New(common.Hash{}, triedb) + it := NewIterator(tr.NodeIterator(nil)) + for it.Next() { + checktr.Update(it.Key, it.Value) + } + if tr.Hash() != checktr.Hash() { + rt[i].err = fmt.Errorf("hash mismatch in opItercheckhash") + } + } + // Abort the test on error. + if rt[i].err != nil { + return false + } + } + return true +} + +func TestRandom(t *testing.T) { + if err := quick.Check(runRandTest, nil); err != nil { + if cerr, ok := err.(*quick.CheckError); ok { + t.Fatalf("random test iteration %d failed: %s", cerr.Count, spew.Sdump(cerr.In)) + } + t.Fatal(err) + } +} + +func BenchmarkGet(b *testing.B) { benchGet(b, false) } +func BenchmarkGetDB(b *testing.B) { benchGet(b, true) } +func BenchmarkUpdateBE(b *testing.B) { benchUpdate(b, binary.BigEndian) } +func BenchmarkUpdateLE(b *testing.B) { benchUpdate(b, binary.LittleEndian) } + +const benchElemCount = 20000 + +func benchGet(b *testing.B, commit bool) { + trie := new(Trie) + if commit { + tmpdb := tempDB() + trie, _ = New(common.Hash{}, tmpdb) + } + k := make([]byte, 32) + for i := 0; i < benchElemCount; i++ { + binary.LittleEndian.PutUint64(k, uint64(i)) + trie.Update(k, k) + } + binary.LittleEndian.PutUint64(k, benchElemCount/2) + if commit { + trie.Commit(nil) + } + + b.ResetTimer() + for i := 0; i < b.N; i++ { + trie.Get(k) + } + b.StopTimer() +} + +func benchUpdate(b *testing.B, e binary.ByteOrder) *Trie { + trie := newEmpty() + k := make([]byte, 32) + b.ReportAllocs() + for i := 0; i < b.N; i++ { + e.PutUint64(k, uint64(i)) + trie.Update(k, k) + } + return trie +} + +// Benchmarks the trie hashing. Since the trie caches the result of any operation, +// we cannot use b.N as the number of hashing rouns, since all rounds apart from +// the first one will be NOOP. As such, we'll use b.N as the number of account to +// insert into the trie before measuring the hashing. +// BenchmarkHash-6 288680 4561 ns/op 682 B/op 9 allocs/op +// BenchmarkHash-6 275095 4800 ns/op 685 B/op 9 allocs/op +// pure hasher: +// BenchmarkHash-6 319362 4230 ns/op 675 B/op 9 allocs/op +// BenchmarkHash-6 257460 4674 ns/op 689 B/op 9 allocs/op +// With hashing in-between and pure hasher: +// BenchmarkHash-6 225417 7150 ns/op 982 B/op 12 allocs/op +// BenchmarkHash-6 220378 6197 ns/op 983 B/op 12 allocs/op +// same with old hasher +// BenchmarkHash-6 229758 6437 ns/op 981 B/op 12 allocs/op +// BenchmarkHash-6 212610 7137 ns/op 986 B/op 12 allocs/op +func BenchmarkHash(b *testing.B) { + // Create a realistic account trie to hash. We're first adding and hashing N + // entries, then adding N more. + addresses, accounts := makeAccounts(2 * b.N) + // Insert the accounts into the trie and hash it + trie := newEmpty() + i := 0 + for ; i < len(addresses)/2; i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + trie.Hash() + for ; i < len(addresses); i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + b.ResetTimer() + b.ReportAllocs() + // trie.hashRoot(nil, nil) + trie.Hash() +} + +type account struct { + Nonce uint64 + Balance *big.Int + Root common.Hash + CodeHash []byte +} + +// Benchmarks the trie Commit following a Hash. Since the trie caches the result of any operation, +// we cannot use b.N as the number of hashing rouns, since all rounds apart from +// the first one will be NOOP. As such, we'll use b.N as the number of account to +// insert into the trie before measuring the hashing. +func BenchmarkCommitAfterHash(b *testing.B) { + b.Run("no-onleaf", func(b *testing.B) { + benchmarkCommitAfterHash(b, nil) + }) + var a account + onleaf := func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error { + rlp.DecodeBytes(leaf, &a) + return nil + } + b.Run("with-onleaf", func(b *testing.B) { + benchmarkCommitAfterHash(b, onleaf) + }) +} + +func benchmarkCommitAfterHash(b *testing.B, onleaf LeafCallback) { + // Make the random benchmark deterministic + + addresses, accounts := makeAccounts(b.N) + trie := newEmpty() + for i := 0; i < len(addresses); i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + // Insert the accounts into the trie and hash it + trie.Hash() + b.ResetTimer() + b.ReportAllocs() + trie.Commit(onleaf) +} + +func TestTinyTrie(t *testing.T) { + // Create a realistic account trie to hash + _, accounts := makeAccounts(5) + trie := newEmpty() + trie.Update(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001337"), accounts[3]) + if exp, root := common.HexToHash("8c6a85a4d9fda98feff88450299e574e5378e32391f75a055d470ac0653f1005"), trie.Hash(); exp != root { + t.Errorf("1: got %x, exp %x", root, exp) + } + trie.Update(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001338"), accounts[4]) + if exp, root := common.HexToHash("ec63b967e98a5720e7f720482151963982890d82c9093c0d486b7eb8883a66b1"), trie.Hash(); exp != root { + t.Errorf("2: got %x, exp %x", root, exp) + } + trie.Update(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001339"), accounts[4]) + if exp, root := common.HexToHash("0608c1d1dc3905fa22204c7a0e43644831c3b6d3def0f274be623a948197e64a"), trie.Hash(); exp != root { + t.Errorf("3: got %x, exp %x", root, exp) + } + checktr, _ := New(common.Hash{}, trie.db) + it := NewIterator(trie.NodeIterator(nil)) + for it.Next() { + checktr.Update(it.Key, it.Value) + } + if troot, itroot := trie.Hash(), checktr.Hash(); troot != itroot { + t.Fatalf("hash mismatch in opItercheckhash, trie: %x, check: %x", troot, itroot) + } +} + +func TestCommitAfterHash(t *testing.T) { + // Create a realistic account trie to hash + addresses, accounts := makeAccounts(1000) + trie := newEmpty() + for i := 0; i < len(addresses); i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + // Insert the accounts into the trie and hash it + trie.Hash() + trie.Commit(nil) + root := trie.Hash() + exp := common.HexToHash("72f9d3f3fe1e1dd7b8936442e7642aef76371472d94319900790053c493f3fe6") + if exp != root { + t.Errorf("got %x, exp %x", root, exp) + } + root, _, _ = trie.Commit(nil) + if exp != root { + t.Errorf("got %x, exp %x", root, exp) + } +} + +func makeAccounts(size int) (addresses [][20]byte, accounts [][]byte) { + // Make the random benchmark deterministic + random := rand.New(rand.NewSource(0)) + // Create a realistic account trie to hash + addresses = make([][20]byte, size) + for i := 0; i < len(addresses); i++ { + data := make([]byte, 20) + random.Read(data) + copy(addresses[i][:], data) + } + accounts = make([][]byte, len(addresses)) + for i := 0; i < len(accounts); i++ { + var ( + nonce = uint64(random.Int63()) + root = emptyRoot + code = crypto.Keccak256(nil) + ) + // The big.Rand function is not deterministic with regards to 64 vs 32 bit systems, + // and will consume different amount of data from the rand source. + // balance = new(big.Int).Rand(random, new(big.Int).Exp(common.Big2, common.Big256, nil)) + // Therefore, we instead just read via byte buffer + numBytes := random.Uint32() % 33 // [0, 32] bytes + balanceBytes := make([]byte, numBytes) + random.Read(balanceBytes) + balance := new(big.Int).SetBytes(balanceBytes) + data, _ := rlp.EncodeToBytes(&account{Nonce: nonce, Balance: balance, Root: root, CodeHash: code}) + accounts[i] = data + } + return addresses, accounts +} + +// spongeDb is a dummy db backend which accumulates writes in a sponge +type spongeDb struct { + sponge hash.Hash + id string + journal []string +} + +func (s *spongeDb) Has(key []byte) (bool, error) { panic("implement me") } +func (s *spongeDb) Get(key []byte) ([]byte, error) { return nil, errors.New("no such elem") } +func (s *spongeDb) Delete(key []byte) error { panic("implement me") } +func (s *spongeDb) NewBatch() ethdb.Batch { return &spongeBatch{s} } +func (s *spongeDb) Stat(property string) (string, error) { panic("implement me") } +func (s *spongeDb) Compact(start []byte, limit []byte) error { panic("implement me") } +func (s *spongeDb) Close() error { return nil } +func (s *spongeDb) Put(key []byte, value []byte) error { + valbrief := value + if len(valbrief) > 8 { + valbrief = valbrief[:8] + } + s.journal = append(s.journal, fmt.Sprintf("%v: PUT([%x...], [%d bytes] %x...)\n", s.id, key[:8], len(value), valbrief)) + s.sponge.Write(key) + s.sponge.Write(value) + return nil +} +func (s *spongeDb) NewIterator(prefix []byte, start []byte) ethdb.Iterator { panic("implement me") } + +// spongeBatch is a dummy batch which immediately writes to the underlying spongedb +type spongeBatch struct { + db *spongeDb +} + +func (b *spongeBatch) Put(key, value []byte) error { + b.db.Put(key, value) + return nil +} +func (b *spongeBatch) Delete(key []byte) error { panic("implement me") } +func (b *spongeBatch) ValueSize() int { return 100 } +func (b *spongeBatch) Write() error { return nil } +func (b *spongeBatch) Reset() {} +func (b *spongeBatch) Replay(w ethdb.KeyValueWriter) error { return nil } + +// TestCommitSequence tests that the trie.Commit operation writes the elements of the trie +// in the expected order, and calls the callbacks in the expected order. +// The test data was based on the 'master' code, and is basically random. It can be used +// to check whether changes to the trie modifies the write order or data in any way. +func TestCommitSequence(t *testing.T) { + for i, tc := range []struct { + count int + expWriteSeqHash []byte + expCallbackSeqHash []byte + }{ + { + 20, common.FromHex("873c78df73d60e59d4a2bcf3716e8bfe14554549fea2fc147cb54129382a8066"), + common.FromHex("ff00f91ac05df53b82d7f178d77ada54fd0dca64526f537034a5dbe41b17df2a"), + }, + { + 200, common.FromHex("ba03d891bb15408c940eea5ee3d54d419595102648d02774a0268d892add9c8e"), + common.FromHex("f3cd509064c8d319bbdd1c68f511850a902ad275e6ed5bea11547e23d492a926"), + }, + { + 2000, common.FromHex("f7a184f20df01c94f09537401d11e68d97ad0c00115233107f51b9c287ce60c7"), + common.FromHex("ff795ea898ba1e4cfed4a33b4cf5535a347a02cf931f88d88719faf810f9a1c9"), + }, + } { + addresses, accounts := makeAccounts(tc.count) + // This spongeDb is used to check the sequence of disk-db-writes + s := &spongeDb{sponge: sha3.NewLegacyKeccak256()} + db := NewDatabase(s) + trie, _ := New(common.Hash{}, db) + // Another sponge is used to check the callback-sequence + callbackSponge := sha3.NewLegacyKeccak256() + // Fill the trie with elements + for i := 0; i < tc.count; i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + // Flush trie -> database + root, _, _ := trie.Commit(nil) + // Flush memdb -> disk (sponge) + db.Commit(root, false, func(c common.Hash) { + // And spongify the callback-order + callbackSponge.Write(c[:]) + }) + if got, exp := s.sponge.Sum(nil), tc.expWriteSeqHash; !bytes.Equal(got, exp) { + t.Errorf("test %d, disk write sequence wrong:\ngot %x exp %x\n", i, got, exp) + } + if got, exp := callbackSponge.Sum(nil), tc.expCallbackSeqHash; !bytes.Equal(got, exp) { + t.Errorf("test %d, call back sequence wrong:\ngot: %x exp %x\n", i, got, exp) + } + } +} + +// TestCommitSequenceRandomBlobs is identical to TestCommitSequence +// but uses random blobs instead of 'accounts' +func TestCommitSequenceRandomBlobs(t *testing.T) { + for i, tc := range []struct { + count int + expWriteSeqHash []byte + expCallbackSeqHash []byte + }{ + { + 20, common.FromHex("8e4a01548551d139fa9e833ebc4e66fc1ba40a4b9b7259d80db32cff7b64ebbc"), + common.FromHex("450238d73bc36dc6cc6f926987e5428535e64be403877c4560e238a52749ba24"), + }, + { + 200, common.FromHex("6869b4e7b95f3097a19ddb30ff735f922b915314047e041614df06958fc50554"), + common.FromHex("0ace0b03d6cb8c0b82f6289ef5b1a1838306b455a62dafc63cada8e2924f2550"), + }, + { + 2000, common.FromHex("444200e6f4e2df49f77752f629a96ccf7445d4698c164f962bbd85a0526ef424"), + common.FromHex("117d30dafaa62a1eed498c3dfd70982b377ba2b46dd3e725ed6120c80829e518"), + }, + } { + prng := rand.New(rand.NewSource(int64(i))) + // This spongeDb is used to check the sequence of disk-db-writes + s := &spongeDb{sponge: sha3.NewLegacyKeccak256()} + db := NewDatabase(s) + trie, _ := New(common.Hash{}, db) + // Another sponge is used to check the callback-sequence + callbackSponge := sha3.NewLegacyKeccak256() + // Fill the trie with elements + for i := 0; i < tc.count; i++ { + key := make([]byte, 32) + var val []byte + // 50% short elements, 50% large elements + if prng.Intn(2) == 0 { + val = make([]byte, 1+prng.Intn(32)) + } else { + val = make([]byte, 1+prng.Intn(4096)) + } + prng.Read(key) + prng.Read(val) + trie.Update(key, val) + } + // Flush trie -> database + root, _, _ := trie.Commit(nil) + // Flush memdb -> disk (sponge) + db.Commit(root, false, func(c common.Hash) { + // And spongify the callback-order + callbackSponge.Write(c[:]) + }) + if got, exp := s.sponge.Sum(nil), tc.expWriteSeqHash; !bytes.Equal(got, exp) { + t.Fatalf("test %d, disk write sequence wrong:\ngot %x exp %x\n", i, got, exp) + } + if got, exp := callbackSponge.Sum(nil), tc.expCallbackSeqHash; !bytes.Equal(got, exp) { + t.Fatalf("test %d, call back sequence wrong:\ngot: %x exp %x\n", i, got, exp) + } + } +} + +func TestCommitSequenceStackTrie(t *testing.T) { + for count := 1; count < 200; count++ { + prng := rand.New(rand.NewSource(int64(count))) + // This spongeDb is used to check the sequence of disk-db-writes + s := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "a"} + db := NewDatabase(s) + trie, _ := New(common.Hash{}, db) + // Another sponge is used for the stacktrie commits + stackTrieSponge := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "b"} + stTrie := NewStackTrie(stackTrieSponge) + // Fill the trie with elements + for i := 1; i < count; i++ { + // For the stack trie, we need to do inserts in proper order + key := make([]byte, 32) + binary.BigEndian.PutUint64(key, uint64(i)) + var val []byte + // 50% short elements, 50% large elements + if prng.Intn(2) == 0 { + val = make([]byte, 1+prng.Intn(32)) + } else { + val = make([]byte, 1+prng.Intn(1024)) + } + prng.Read(val) + trie.TryUpdate(key, val) + stTrie.TryUpdate(key, val) + } + // Flush trie -> database + root, _, _ := trie.Commit(nil) + // Flush memdb -> disk (sponge) + db.Commit(root, false, nil) + // And flush stacktrie -> disk + stRoot, err := stTrie.Commit() + if err != nil { + t.Fatalf("Failed to commit stack trie %v", err) + } + if stRoot != root { + t.Fatalf("root wrong, got %x exp %x", stRoot, root) + } + if got, exp := stackTrieSponge.sponge.Sum(nil), s.sponge.Sum(nil); !bytes.Equal(got, exp) { + // Show the journal + t.Logf("Expected:") + for i, v := range s.journal { + t.Logf("op %d: %v", i, v) + } + t.Logf("Stacktrie:") + for i, v := range stackTrieSponge.journal { + t.Logf("op %d: %v", i, v) + } + t.Fatalf("test %d, disk write sequence wrong:\ngot %x exp %x\n", count, got, exp) + } + } +} + +// TestCommitSequenceSmallRoot tests that a trie which is essentially only a +// small (<32 byte) shortnode with an included value is properly committed to a +// database. +// This case might not matter, since in practice, all keys are 32 bytes, which means +// that even a small trie which contains a leaf will have an extension making it +// not fit into 32 bytes, rlp-encoded. However, it's still the correct thing to do. +func TestCommitSequenceSmallRoot(t *testing.T) { + s := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "a"} + db := NewDatabase(s) + trie, _ := New(common.Hash{}, db) + // Another sponge is used for the stacktrie commits + stackTrieSponge := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "b"} + stTrie := NewStackTrie(stackTrieSponge) + // Add a single small-element to the trie(s) + key := make([]byte, 5) + key[0] = 1 + trie.TryUpdate(key, []byte{0x1}) + stTrie.TryUpdate(key, []byte{0x1}) + // Flush trie -> database + root, _, _ := trie.Commit(nil) + // Flush memdb -> disk (sponge) + db.Commit(root, false, nil) + // And flush stacktrie -> disk + stRoot, err := stTrie.Commit() + if err != nil { + t.Fatalf("Failed to commit stack trie %v", err) + } + if stRoot != root { + t.Fatalf("root wrong, got %x exp %x", stRoot, root) + } + fmt.Printf("root: %x\n", stRoot) + if got, exp := stackTrieSponge.sponge.Sum(nil), s.sponge.Sum(nil); !bytes.Equal(got, exp) { + t.Fatalf("test, disk write sequence wrong:\ngot %x exp %x\n", got, exp) + } +} + +// BenchmarkCommitAfterHashFixedSize benchmarks the Commit (after Hash) of a fixed number of updates to a trie. +// This benchmark is meant to capture the difference on efficiency of small versus large changes. Typically, +// storage tries are small (a couple of entries), whereas the full post-block account trie update is large (a couple +// of thousand entries) +func BenchmarkHashFixedSize(b *testing.B) { + b.Run("10", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(20) + for i := 0; i < b.N; i++ { + benchmarkHashFixedSize(b, acc, add) + } + }) + b.Run("100", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(100) + for i := 0; i < b.N; i++ { + benchmarkHashFixedSize(b, acc, add) + } + }) + + b.Run("1K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(1000) + for i := 0; i < b.N; i++ { + benchmarkHashFixedSize(b, acc, add) + } + }) + b.Run("10K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(10000) + for i := 0; i < b.N; i++ { + benchmarkHashFixedSize(b, acc, add) + } + }) + b.Run("100K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(100000) + for i := 0; i < b.N; i++ { + benchmarkHashFixedSize(b, acc, add) + } + }) +} + +func benchmarkHashFixedSize(b *testing.B, addresses [][20]byte, accounts [][]byte) { + b.ReportAllocs() + trie := newEmpty() + for i := 0; i < len(addresses); i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + // Insert the accounts into the trie and hash it + b.StartTimer() + trie.Hash() + b.StopTimer() +} + +func BenchmarkCommitAfterHashFixedSize(b *testing.B) { + b.Run("10", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(20) + for i := 0; i < b.N; i++ { + benchmarkCommitAfterHashFixedSize(b, acc, add) + } + }) + b.Run("100", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(100) + for i := 0; i < b.N; i++ { + benchmarkCommitAfterHashFixedSize(b, acc, add) + } + }) + + b.Run("1K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(1000) + for i := 0; i < b.N; i++ { + benchmarkCommitAfterHashFixedSize(b, acc, add) + } + }) + b.Run("10K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(10000) + for i := 0; i < b.N; i++ { + benchmarkCommitAfterHashFixedSize(b, acc, add) + } + }) + b.Run("100K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(100000) + for i := 0; i < b.N; i++ { + benchmarkCommitAfterHashFixedSize(b, acc, add) + } + }) +} + +func benchmarkCommitAfterHashFixedSize(b *testing.B, addresses [][20]byte, accounts [][]byte) { + b.ReportAllocs() + trie := newEmpty() + for i := 0; i < len(addresses); i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + // Insert the accounts into the trie and hash it + trie.Hash() + b.StartTimer() + trie.Commit(nil) + b.StopTimer() +} + +func BenchmarkDerefRootFixedSize(b *testing.B) { + b.Run("10", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(20) + for i := 0; i < b.N; i++ { + benchmarkDerefRootFixedSize(b, acc, add) + } + }) + b.Run("100", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(100) + for i := 0; i < b.N; i++ { + benchmarkDerefRootFixedSize(b, acc, add) + } + }) + + b.Run("1K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(1000) + for i := 0; i < b.N; i++ { + benchmarkDerefRootFixedSize(b, acc, add) + } + }) + b.Run("10K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(10000) + for i := 0; i < b.N; i++ { + benchmarkDerefRootFixedSize(b, acc, add) + } + }) + b.Run("100K", func(b *testing.B) { + b.StopTimer() + acc, add := makeAccounts(100000) + for i := 0; i < b.N; i++ { + benchmarkDerefRootFixedSize(b, acc, add) + } + }) +} + +func benchmarkDerefRootFixedSize(b *testing.B, addresses [][20]byte, accounts [][]byte) { + b.ReportAllocs() + trie := newEmpty() + for i := 0; i < len(addresses); i++ { + trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i]) + } + h := trie.Hash() + trie.Commit(nil) + b.StartTimer() + trie.db.Dereference(h) + b.StopTimer() +} + +func tempDB() *Database { + memdb := rawdb.NewMemoryDatabase() + return NewDatabase(memdb) +} + +func getString(trie *Trie, k string) []byte { + return trie.Get([]byte(k)) +} + +func updateString(trie *Trie, k, v string) { + trie.Update([]byte(k), []byte(v)) +} + +func deleteString(trie *Trie, k string) { + trie.Delete([]byte(k)) +} + +func TestDecodeNode(t *testing.T) { + t.Parallel() + var ( + hash = make([]byte, 20) + elems = make([]byte, 20) + ) + for i := 0; i < 5000000; i++ { + rand.Read(hash) + rand.Read(elems) + decodeNode(hash, elems) + } +}