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update telnet.js so it doesn't crash on control key sends, since linemod... #11

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update telnet.js so it doesn't crash on control key sends, since linemod... #11

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update telnet.js so it doesn't crash on control key sends, since line…
georgefrick Apr 8, 2015
4347703
fix the test reusing the port the lib defaults to, avoiding the addre…
georgefrick Apr 8, 2015
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44 changes: 28 additions & 16 deletions lib/telnet.js
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Original file line number Diff line number Diff line change
Expand Up @@ -20,22 +20,25 @@ var net = require('net')
, Binary = require('binary')

var COMMANDS = {
SE: 240 // end of subnegotiation parameters
, NOP: 241 // no operation
, DM: 242 // data mark
, BRK: 243 // break
, IP: 244 // suspend (a.k.a. "interrupt process")
, AO: 245 // abort output
, AYT: 246 // are you there?
, EC: 247 // erase character
, EL: 248 // erase line
, GA: 249 // go ahead
, SB: 250 // subnegotiation
, WILL: 251 // will
, WONT: 252 // wont
, DO: 253 // do
, DONT: 254 // dont
, IAC: 255 // interpret as command
EOF: 236 // Actual EOF character where supported. [ignoring]
, SUSP: 237 // Request a suspend. [ignoring]
, ABORT: 238 // Request an abort. [ignoring]
, SE: 240 // end of subnegotiation parameters
, NOP: 241 // no operation
, DM: 242 // data mark
, BRK: 243 // break
, IP: 244 // suspend (a.k.a. "interrupt process")
, AO: 245 // abort output
, AYT: 246 // are you there?
, EC: 247 // erase character
, EL: 248 // erase line
, GA: 249 // go ahead
, SB: 250 // subnegotiation
, WILL: 251 // will
, WONT: 252 // wont
, DO: 253 // do
, DONT: 254 // dont
, IAC: 255 // interpret as command
}

var OPTIONS = {
Expand Down Expand Up @@ -89,6 +92,15 @@ COMMAND_IMPLS[COMMANDS.IAC] = function (bufs, i, event) {
return event
}

;['eof','susp','abort','ec','el'].forEach(function (command) {
var code = COMMANDS[command.toUpperCase()]
COMMAND_IMPLS[code] = function (bufs, i, event) {
// Needs to be converted to a NOP, we don't want to act on it.
event.buf = bufs.splice(0, i).toBuffer()
event.data = Buffer([ 241 ])
return event
}
})

var OPTION_IMPLS = {}
// these ones don't take any arguments
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2 changes: 1 addition & 1 deletion test/test.js
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Expand Up @@ -5,7 +5,7 @@ var net = require('net');
var client_responder = null;
var client = null;
var server = null;
var port = 1337;
var port = 10987;

describe('telnet', function () {
it('should export a function', function () {
Expand Down