-
Notifications
You must be signed in to change notification settings - Fork 15
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #66 from chainguard-dev/create-pull-request/patch
Export mono/sdk: refs/heads/main
- Loading branch information
Showing
3 changed files
with
81 additions
and
4 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* | ||
| Copyright 2024 Chainguard, Inc. | ||
| SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| // Package ggcr provides a go-containerregistry authn.Keychain for the cgr.dev registry. | ||
| package ggcr | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "chainguard.dev/sdk/sts" | ||
| "github.com/google/go-containerregistry/pkg/authn" | ||
| "golang.org/x/oauth2" | ||
| ) | ||
|
|
||
| const issuer = "https://issuer.enforce.dev" | ||
|
|
||
| // Keychain returns an authn.Keychain used to authorize requests to the cgr.dev registry using go-containerregistry. | ||
| // | ||
| // It takes the identity UIDP to assume, and a token source to obtain the token to exchange. | ||
| // | ||
| // This can be used with google.golang.org/api/idtoken.NewTokenSource to exchange ambient GCP credentials for Chainguard tokens: | ||
| // | ||
| // ts, err := idtoken.NewTokenSource(ctx, "https://cgr.dev") | ||
| // kc := ggcr.Keychain("my-identity", ts) | ||
| // | ||
| // This keychain can then be used to pull images from the cgr.dev registry: | ||
| // | ||
| // img, err := remote.Image("cgr.dev/my/image", remote.WithAuth(kc)) | ||
| func Keychain(identity string, ts oauth2.TokenSource) authn.Keychain { | ||
| return cgKeychain{identity, ts} | ||
| } | ||
|
|
||
| type cgKeychain struct { | ||
| identity string | ||
| ts oauth2.TokenSource | ||
| } | ||
|
|
||
| func (k cgKeychain) Resolve(res authn.Resource) (authn.Authenticator, error) { | ||
| if res.RegistryStr() != "cgr.dev" { | ||
| return authn.Anonymous, nil | ||
| } | ||
|
|
||
| ctx := context.Background() | ||
| exch := sts.New(issuer, res.RegistryStr(), sts.WithIdentity(k.identity)) | ||
|
|
||
| tok, err := k.ts.Token() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("getting token: %w", err) | ||
| } | ||
| cgtok, err := exch.Exchange(ctx, tok.AccessToken) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("exchanging token: %w", err) | ||
| } | ||
| return &authn.Basic{ | ||
| Username: "_token", | ||
| Password: cgtok.AccessToken, | ||
| }, nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters