Commit | Line | Data |
---|---|---|
cefa0900 JA |
1 | var net = require('net'), |
2 | tls = require('tls'), | |
3 | util = require('util'), | |
b156e01a | 4 | dns = require('dns'), |
cefa0900 | 5 | _ = require('lodash'), |
4c25c0d7 | 6 | EventBinder = require('./eventbinder.js'), |
cefa0900 | 7 | IrcServer = require('./server.js'), |
cced0091 | 8 | IrcCommands = require('./commands.js'), |
cefa0900 | 9 | IrcChannel = require('./channel.js'), |
9650b343 | 10 | IrcUser = require('./user.js'), |
2abb4615 | 11 | EE = require('../ee.js'), |
1a452a02 | 12 | iconv = require('iconv-lite'), |
b5574d3b | 13 | Proxy = require('../proxy.js'), |
55ccaf50 | 14 | Socks; |
32a09dc1 D |
15 | |
16 | ||
55ccaf50 JA |
17 | // Break the Node.js version down into usable parts |
18 | var version_values = process.version.substr(1).split('.').map(function (item) { | |
19 | return parseInt(item, 10); | |
20 | }); | |
9de636f9 | 21 | |
55ccaf50 | 22 | // If we have a suitable Nodejs version, bring int he socks functionality |
9de636f9 | 23 | if (version_values[1] >= 10) { |
3b259b15 | 24 | Socks = require('socksjs'); |
55ccaf50 | 25 | } |
db8af19d | 26 | |
cc54c0a1 | 27 | var IrcConnection = function (hostname, port, ssl, nick, user, options, state, con_num) { |
2a8e95d1 | 28 | var that = this; |
4c25c0d7 | 29 | |
2abb4615 | 30 | EE.call(this,{ |
cefa0900 | 31 | wildcard: true, |
d9285da9 | 32 | delimiter: ' ' |
cefa0900 | 33 | }); |
4c25c0d7 | 34 | this.setMaxListeners(0); |
32a09dc1 | 35 | |
cc54c0a1 D |
36 | options = options || {}; |
37 | ||
db8af19d | 38 | // Socket state |
63008d5e | 39 | this.connected = false; |
db8af19d | 40 | |
fc1c21b8 D |
41 | // IRCd write buffers (flood controll) |
42 | this.write_buffer = []; | |
43 | ||
44 | // In process of writing the buffer? | |
45 | this.writing_buffer = false; | |
46 | ||
47 | // Max number of lines to write a second | |
48 | this.write_buffer_lines_second = 2; | |
49 | ||
db8af19d | 50 | // If registeration with the IRCd has completed |
63008d5e | 51 | this.registered = false; |
db8af19d D |
52 | |
53 | // If we are in the CAP negotiation stage | |
63008d5e | 54 | this.cap_negotiation = true; |
db8af19d D |
55 | |
56 | // User information | |
63008d5e D |
57 | this.nick = nick; |
58 | this.user = user; // Contains users real hostname and address | |
5973d01c | 59 | this.username = this.nick.replace(/[^0-9a-zA-Z\-_.\/]/, ''); |
cc54c0a1 D |
60 | this.password = options.password || ''; |
61 | ||
62 | // Set the passed encoding. or the default if none giving or it fails | |
63 | if (!options.encoding || !this.setEncoding(options.encoding)) { | |
64 | this.setEncoding(global.config.default_encoding); | |
65 | } | |
32a09dc1 | 66 | |
b09157de JA |
67 | // State object |
68 | this.state = state; | |
32a09dc1 | 69 | |
cced0091 D |
70 | // Connection ID in the state |
71 | this.con_num = con_num; | |
72 | ||
73 | // IRC protocol handling | |
74 | this.irc_commands = new IrcCommands(this); | |
75 | ||
cefa0900 JA |
76 | // IrcServer object |
77 | this.server = new IrcServer(this, hostname, port); | |
32a09dc1 | 78 | |
cefa0900 JA |
79 | // IrcUser objects |
80 | this.irc_users = Object.create(null); | |
efe9d487 D |
81 | |
82 | // TODO: use `this.nick` instead of `'*'` when using an IrcUser per nick | |
83 | this.irc_users[this.nick] = new IrcUser(this, '*'); | |
84 | ||
cefa0900 JA |
85 | // IrcChannel objects |
86 | this.irc_channels = Object.create(null); | |
db8af19d D |
87 | |
88 | // IRC connection information | |
63008d5e D |
89 | this.irc_host = {hostname: hostname, port: port}; |
90 | this.ssl = !(!ssl); | |
32a09dc1 | 91 | |
9650b343 | 92 | // SOCKS proxy details |
ac0b278c JA |
93 | // TODO: Wildcard matching of hostnames and/or CIDR ranges of IP addresses |
94 | if ((global.config.socks_proxy && global.config.socks_proxy.enabled) && ((global.config.socks_proxy.all) || (_.contains(global.config.socks_proxy.proxy_hosts, this.irc_host.hostname)))) { | |
95 | this.socks = { | |
96 | host: global.config.socks_proxy.address, | |
97 | port: global.config.socks_proxy.port, | |
98 | user: global.config.socks_proxy.user, | |
99 | pass: global.config.socks_proxy.pass | |
100 | }; | |
101 | } else { | |
102 | this.socks = false; | |
103 | } | |
db8af19d | 104 | |
4b329880 D |
105 | // Kiwi proxy info may be set within a server module. {port: 7779, host: 'kiwi.proxy.com'} |
106 | this.proxy = false; | |
107 | ||
7cf75020 D |
108 | // Net. interface this connection should be made through |
109 | this.outgoing_interface = false; | |
110 | ||
db8af19d | 111 | // Options sent by the IRCd |
63008d5e D |
112 | this.options = Object.create(null); |
113 | this.cap = {requested: [], enabled: []}; | |
db8af19d D |
114 | |
115 | // Is SASL supported on the IRCd | |
63008d5e | 116 | this.sasl = false; |
32a09dc1 | 117 | |
db8af19d | 118 | // Buffers for data sent from the IRCd |
63008d5e | 119 | this.hold_last = false; |
a8d8af60 | 120 | this.held_data = null; |
63008d5e | 121 | |
4c25c0d7 | 122 | this.applyIrcEvents(); |
63008d5e | 123 | }; |
2abb4615 | 124 | util.inherits(IrcConnection, EE); |
63008d5e D |
125 | |
126 | module.exports.IrcConnection = IrcConnection; | |
127 | ||
f9ff7686 | 128 | |
db8af19d | 129 | |
4c25c0d7 D |
130 | IrcConnection.prototype.applyIrcEvents = function () { |
131 | // Listen for events on the IRC connection | |
132 | this.irc_events = { | |
d9285da9 JA |
133 | 'server * connect': onServerConnect, |
134 | 'channel * join': onChannelJoin, | |
df6d68a5 D |
135 | |
136 | // TODO: uncomment when using an IrcUser per nick | |
137 | //'user:*:privmsg': onUserPrivmsg, | |
d9285da9 JA |
138 | 'user * nick': onUserNick, |
139 | 'channel * part': onUserParts, | |
140 | 'channel * quit': onUserParts, | |
141 | 'channel * kick': onUserKick | |
4c25c0d7 D |
142 | }; |
143 | ||
144 | EventBinder.bindIrcEvents('', this.irc_events, this, this); | |
145 | }; | |
146 | ||
db8af19d D |
147 | |
148 | /** | |
149 | * Start the connection to the IRCd | |
150 | */ | |
63008d5e | 151 | IrcConnection.prototype.connect = function () { |
7496de01 | 152 | var that = this; |
63008d5e | 153 | |
db8af19d D |
154 | // The socket connect event to listener for |
155 | var socket_connect_event_name = 'connect'; | |
156 | ||
7496de01 | 157 | // The destination address |
4b329880 D |
158 | var dest_addr; |
159 | if (this.socks) { | |
160 | dest_addr = this.socks.host; | |
161 | } else if (this.proxy) { | |
162 | dest_addr = this.proxy.host; | |
163 | } else { | |
164 | dest_addr = this.irc_host.hostname; | |
165 | } | |
db8af19d D |
166 | |
167 | // Make sure we don't already have an open connection | |
168 | this.disposeSocket(); | |
169 | ||
7496de01 | 170 | // Get the IP family for the dest_addr (either socks or IRCd destination) |
e991ec2f | 171 | getConnectionFamily(dest_addr, function getConnectionFamilyCb(err, family, host) { |
7496de01 D |
172 | var outgoing; |
173 | ||
174 | // Decide which net. interface to make the connection through | |
7cf75020 D |
175 | if (that.outgoing_interface) { |
176 | // An specific interface has been given for this connection | |
177 | outgoing = this.outgoing_interface; | |
178 | ||
179 | } else if (global.config.outgoing_address) { | |
180 | // Pick an interface from the config | |
7496de01 | 181 | if ((family === 'IPv6') && (global.config.outgoing_address.IPv6)) { |
b156e01a JA |
182 | outgoing = global.config.outgoing_address.IPv6; |
183 | } else { | |
7496de01 | 184 | outgoing = global.config.outgoing_address.IPv4 || '0.0.0.0'; |
ddae94f5 D |
185 | |
186 | // We don't have an IPv6 interface but dest_addr may still resolve to | |
187 | // an IPv4 address. Reset `host` and try connecting anyway, letting it | |
188 | // fail if an IPv4 resolved address is not found | |
189 | host = dest_addr; | |
b156e01a | 190 | } |
7496de01 | 191 | |
72280d53 D |
192 | // If we have an array of interfaces, select a random one |
193 | if (typeof outgoing !== 'string' && outgoing.length) { | |
194 | outgoing = outgoing[Math.floor(Math.random() * outgoing.length)]; | |
195 | } | |
196 | ||
197 | // Make sure we have a valid interface address | |
198 | if (typeof outgoing !== 'string') | |
199 | outgoing = '0.0.0.0'; | |
200 | ||
7496de01 D |
201 | } else { |
202 | // No config was found so use the default | |
203 | outgoing = '0.0.0.0'; | |
204 | } | |
205 | ||
206 | // Are we connecting through a SOCKS proxy? | |
6cd5ba87 | 207 | if (that.socks) { |
b156e01a | 208 | that.socket = Socks.connect({ |
4b329880 | 209 | host: that.irc_host.host, |
b156e01a JA |
210 | port: that.irc_host.port, |
211 | ssl: that.ssl, | |
212 | rejectUnauthorized: global.config.reject_unauthorised_certificates | |
4b329880 | 213 | }, {host: host, |
b156e01a JA |
214 | port: that.socks.port, |
215 | user: that.socks.user, | |
216 | pass: that.socks.pass, | |
217 | localAddress: outgoing | |
218 | }); | |
219 | ||
4b329880 D |
220 | } else if (that.proxy) { |
221 | that.socket = new Proxy.ProxySocket(that.proxy.port, host, { | |
b5574d3b D |
222 | username: that.username, |
223 | }); | |
4b329880 | 224 | that.socket.connect(that.irc_host.port, that.irc_host.hostname); |
b5574d3b | 225 | |
7496de01 D |
226 | } else { |
227 | // No socks connection, connect directly to the IRCd | |
b156e01a JA |
228 | |
229 | if (that.ssl) { | |
230 | that.socket = tls.connect({ | |
ddae94f5 | 231 | host: host, |
b156e01a JA |
232 | port: that.irc_host.port, |
233 | rejectUnauthorized: global.config.reject_unauthorised_certificates, | |
234 | localAddress: outgoing | |
235 | }); | |
236 | ||
4de89532 D |
237 | // We need the raw socket connect event |
238 | that.socket.socket.on('connect', function() { rawSocketConnect.call(that, this); }); | |
239 | ||
b156e01a JA |
240 | socket_connect_event_name = 'secureConnect'; |
241 | ||
242 | } else { | |
243 | that.socket = net.connect({ | |
244 | host: host, | |
245 | port: that.irc_host.port, | |
246 | localAddress: outgoing | |
247 | }); | |
248 | } | |
7496de01 | 249 | } |
b156e01a | 250 | |
7496de01 | 251 | // Apply the socket listeners |
e991ec2f | 252 | that.socket.on(socket_connect_event_name, function socketConnectCb() { |
9e225dc6 | 253 | |
4de89532 D |
254 | // TLS connections have the actual socket as a property |
255 | var is_tls = (typeof this.socket !== 'undefined') ? | |
256 | true : | |
257 | false; | |
9e225dc6 | 258 | |
4de89532 D |
259 | // TLS sockets have already called this |
260 | if (!is_tls) | |
261 | rawSocketConnect.call(that, this); | |
cc3c5d04 | 262 | |
4de89532 | 263 | that.connected = true; |
cc3c5d04 | 264 | |
b156e01a JA |
265 | socketConnectHandler.call(that); |
266 | }); | |
32a09dc1 | 267 | |
e991ec2f | 268 | that.socket.on('error', function socketErrorCb(event) { |
b156e01a JA |
269 | that.emit('error', event); |
270 | }); | |
32a09dc1 | 271 | |
7496de01 | 272 | that.socket.on('data', function () { |
8b967a99 | 273 | socketOnData.apply(that, arguments); |
b156e01a | 274 | }); |
32a09dc1 | 275 | |
e991ec2f | 276 | that.socket.on('close', function socketCloseCb(had_error) { |
b156e01a | 277 | that.connected = false; |
cc3c5d04 D |
278 | |
279 | // Remove this socket form the identd lookup | |
9e225dc6 D |
280 | if (that.identd_port_pair) { |
281 | delete global.clients.port_pairs[that.identd_port_pair]; | |
cc3c5d04 D |
282 | } |
283 | ||
b156e01a | 284 | that.emit('close'); |
db8af19d | 285 | |
b156e01a JA |
286 | // Close the whole socket down |
287 | that.disposeSocket(); | |
288 | }); | |
7496de01 | 289 | }); |
2a8e95d1 | 290 | }; |
2a8e95d1 | 291 | |
3c91bff8 JA |
292 | /** |
293 | * Send an event to the client | |
294 | */ | |
295 | IrcConnection.prototype.clientEvent = function (event_name, data, callback) { | |
296 | data.server = this.con_num; | |
297 | this.state.sendIrcCommand(event_name, data, callback); | |
298 | }; | |
db8af19d D |
299 | |
300 | /** | |
301 | * Write a line of data to the IRCd | |
56f0f1b9 D |
302 | * @param data The line of data to be sent |
303 | * @param force Write the data now, ignoring any write queue | |
db8af19d | 304 | */ |
56f0f1b9 | 305 | IrcConnection.prototype.write = function (data, force) { |
1a452a02 | 306 | //ENCODE string to encoding of the server |
d1b3e8b3 | 307 | encoded_buffer = iconv.encode(data + '\r\n', this.encoding); |
fc1c21b8 | 308 | |
56f0f1b9 D |
309 | if (force) { |
310 | this.socket.write(encoded_buffer); | |
311 | return; | |
312 | } | |
313 | ||
fc1c21b8 D |
314 | this.write_buffer.push(encoded_buffer); |
315 | ||
316 | // Only flush if we're not writing already | |
317 | if (!this.writing_buffer) | |
318 | this.flushWriteBuffer(); | |
319 | }; | |
320 | ||
321 | ||
322 | ||
323 | /** | |
324 | * Flush the write buffer to the server in a throttled fashion | |
325 | */ | |
326 | IrcConnection.prototype.flushWriteBuffer = function () { | |
14a18c21 D |
327 | |
328 | // In case the socket closed between writing our queue.. clean up | |
329 | if (!this.connected) { | |
330 | this.write_buffer = []; | |
331 | this.writing_buffer = false; | |
332 | return; | |
333 | } | |
334 | ||
fc1c21b8 D |
335 | this.writing_buffer = true; |
336 | ||
337 | // Disabled write buffer? Send everything we have | |
338 | if (!this.write_buffer_lines_second) { | |
fc1c21b8 D |
339 | this.write_buffer.forEach(function(buffer, idx) { |
340 | this.socket.write(buffer); | |
341 | this.write_buffer = null; | |
342 | }); | |
343 | ||
344 | this.write_buffer = []; | |
345 | this.writing_buffer = false; | |
346 | ||
347 | return; | |
348 | } | |
349 | ||
350 | // Nothing to write? Stop writing and leave | |
351 | if (this.write_buffer.length === 0) { | |
352 | this.writing_buffer = false; | |
353 | return; | |
354 | } | |
355 | ||
356 | this.socket.write(this.write_buffer[0]); | |
357 | this.write_buffer = this.write_buffer.slice(1); | |
358 | ||
14a18c21 D |
359 | // Call this function again at some point if we still have data to write |
360 | if (this.write_buffer.length > 0) { | |
361 | setTimeout(this.flushWriteBuffer.bind(this), 1000 / this.write_buffer_lines_second); | |
362 | } else { | |
363 | // No more buffers to write.. so we've finished | |
364 | this.writing_buffer = false; | |
365 | } | |
2a8e95d1 D |
366 | }; |
367 | ||
db8af19d D |
368 | |
369 | ||
370 | /** | |
56f0f1b9 | 371 | * Close the connection to the IRCd after forcing one last line |
db8af19d | 372 | */ |
2a8e95d1 | 373 | IrcConnection.prototype.end = function (data, callback) { |
56f0f1b9 D |
374 | if (!this.socket) |
375 | return; | |
376 | ||
db8af19d | 377 | if (data) |
56f0f1b9 | 378 | this.write(data, true); |
32a09dc1 | 379 | |
db8af19d | 380 | this.socket.end(); |
2a8e95d1 D |
381 | }; |
382 | ||
db8af19d D |
383 | |
384 | ||
385 | /** | |
386 | * Clean up this IrcConnection instance and any sockets | |
387 | */ | |
c08717da | 388 | IrcConnection.prototype.dispose = function () { |
a787f79f D |
389 | // If we're still connected, wait until the socket is closed before disposing |
390 | // so that all the events are still correctly triggered | |
391 | if (this.socket && this.connected) { | |
14a18c21 | 392 | this.end(); |
a787f79f D |
393 | return; |
394 | } | |
395 | ||
396 | if (this.socket) { | |
397 | this.disposeSocket(); | |
a787f79f D |
398 | } |
399 | ||
cefa0900 JA |
400 | _.each(this.irc_users, function (user) { |
401 | user.dispose(); | |
402 | }); | |
403 | _.each(this.irc_channels, function (chan) { | |
404 | chan.dispose(); | |
405 | }); | |
ebe178d6 D |
406 | this.irc_users = undefined; |
407 | this.irc_channels = undefined; | |
408 | ||
409 | this.server.dispose(); | |
410 | this.server = undefined; | |
4c25c0d7 | 411 | |
a787f79f | 412 | this.irc_commands = undefined; |
4c25c0d7 | 413 | |
a787f79f | 414 | EventBinder.unbindIrcEvents('', this.irc_events, this); |
5e211c3d | 415 | |
14a18c21 | 416 | this.removeAllListeners(); |
c08717da D |
417 | }; |
418 | ||
419 | ||
2a8e95d1 | 420 | |
db8af19d D |
421 | /** |
422 | * Clean up any sockets for this IrcConnection | |
423 | */ | |
424 | IrcConnection.prototype.disposeSocket = function () { | |
425 | if (this.socket) { | |
6b8fa7a6 | 426 | this.socket.end(); |
db8af19d D |
427 | this.socket.removeAllListeners(); |
428 | this.socket = null; | |
429 | } | |
2a8e95d1 D |
430 | }; |
431 | ||
d1b3e8b3 VDF |
432 | /** |
433 | * Set a new encoding for this connection | |
434 | * Return true in case of success | |
435 | */ | |
436 | ||
437 | IrcConnection.prototype.setEncoding = function (encoding) { | |
3ddc135a D |
438 | var encoded_test; |
439 | ||
3efb4f33 VDF |
440 | try { |
441 | encoded_test = iconv.encode("TEST", encoding); | |
442 | //This test is done to check if this encoding also supports | |
443 | //the ASCII charset required by the IRC protocols | |
444 | //(Avoid the use of base64 or incompatible encodings) | |
445 | if (encoded_test == "TEST") { | |
446 | this.encoding = encoding; | |
447 | return true; | |
448 | } | |
449 | return false; | |
450 | } catch (err) { | |
451 | return false; | |
65c5a477 | 452 | } |
d1b3e8b3 | 453 | }; |
2a8e95d1 | 454 | |
b156e01a JA |
455 | function getConnectionFamily(host, callback) { |
456 | if (net.isIP(host)) { | |
457 | if (net.isIPv4(host)) { | |
3e01340e | 458 | callback(null, 'IPv4', host); |
b156e01a | 459 | } else { |
3e01340e | 460 | callback(null, 'IPv6', host); |
b156e01a JA |
461 | } |
462 | } else { | |
e991ec2f | 463 | dns.resolve6(host, function resolve6Cb(err, addresses) { |
b156e01a JA |
464 | if (!err) { |
465 | callback(null, 'IPv6', addresses[0]); | |
466 | } else { | |
e991ec2f | 467 | dns.resolve4(host, function resolve4Cb(err, addresses) { |
b156e01a JA |
468 | if (!err) { |
469 | callback(null, 'IPv4',addresses[0]); | |
470 | } else { | |
471 | callback(err); | |
472 | } | |
473 | }); | |
474 | } | |
475 | }); | |
476 | } | |
477 | } | |
478 | ||
db8af19d | 479 | |
4c25c0d7 D |
480 | function onChannelJoin(event) { |
481 | var chan; | |
482 | ||
483 | // Only deal with ourselves joining a channel | |
484 | if (event.nick !== this.nick) | |
485 | return; | |
486 | ||
487 | // We should only ever get a JOIN command for a channel | |
488 | // we're not already a member of.. but check we don't | |
489 | // have this channel in case something went wrong somewhere | |
490 | // at an earlier point | |
491 | if (!this.irc_channels[event.channel]) { | |
492 | chan = new IrcChannel(this, event.channel); | |
493 | this.irc_channels[event.channel] = chan; | |
494 | chan.irc_events.join.call(chan, event); | |
495 | } | |
496 | } | |
497 | ||
498 | ||
499 | function onServerConnect(event) { | |
500 | this.nick = event.nick; | |
4c25c0d7 D |
501 | } |
502 | ||
503 | ||
504 | function onUserPrivmsg(event) { | |
505 | var user; | |
506 | ||
507 | // Only deal with messages targetted to us | |
508 | if (event.channel !== this.nick) | |
509 | return; | |
510 | ||
511 | if (!this.irc_users[event.nick]) { | |
512 | user = new IrcUser(this, event.nick); | |
513 | this.irc_users[event.nick] = user; | |
514 | user.irc_events.privmsg.call(user, event); | |
515 | } | |
516 | } | |
517 | ||
518 | ||
9be602fc D |
519 | function onUserNick(event) { |
520 | var user; | |
521 | ||
522 | // Only deal with messages targetted to us | |
523 | if (event.nick !== this.nick) | |
524 | return; | |
525 | ||
526 | this.nick = event.newnick; | |
527 | } | |
528 | ||
529 | ||
4c25c0d7 D |
530 | function onUserParts(event) { |
531 | // Only deal with ourselves leaving a channel | |
532 | if (event.nick !== this.nick) | |
533 | return; | |
534 | ||
535 | if (this.irc_channels[event.channel]) { | |
536 | this.irc_channels[event.channel].dispose(); | |
537 | delete this.irc_channels[event.channel]; | |
538 | } | |
539 | } | |
540 | ||
6d2df752 MC |
541 | function onUserKick(event){ |
542 | // Only deal with ourselves being kicked from a channel | |
543 | if (event.kicked !== this.nick) | |
544 | return; | |
545 | ||
546 | if (this.irc_channels[event.channel]) { | |
547 | this.irc_channels[event.channel].dispose(); | |
548 | delete this.irc_channels[event.channel]; | |
549 | } | |
550 | ||
551 | } | |
552 | ||
4c25c0d7 D |
553 | |
554 | ||
4de89532 D |
555 | /** |
556 | * When a socket connects to an IRCd | |
557 | * May be called before any socket handshake are complete (eg. TLS) | |
558 | */ | |
559 | var rawSocketConnect = function(socket) { | |
560 | // Make note of the port numbers for any identd lookups | |
561 | // Nodejs < 0.9.6 has no socket.localPort so check this first | |
562 | if (typeof socket.localPort != 'undefined') { | |
563 | this.identd_port_pair = socket.localPort.toString() + '_' + socket.remotePort.toString(); | |
564 | global.clients.port_pairs[this.identd_port_pair] = this; | |
565 | } | |
566 | }; | |
567 | ||
4c25c0d7 | 568 | |
db8af19d D |
569 | /** |
570 | * Handle the socket connect event, starting the IRCd registration | |
571 | */ | |
572 | var socketConnectHandler = function () { | |
15fefff7 D |
573 | var that = this, |
574 | connect_data; | |
575 | ||
576 | // Build up data to be used for webirc/etc detection | |
577 | connect_data = { | |
bd7196e1 D |
578 | connection: this, |
579 | ||
580 | // Array of lines to be sent to the IRCd before anything else | |
581 | prepend_data: [] | |
15fefff7 D |
582 | }; |
583 | ||
584 | // Let the webirc/etc detection modify any required parameters | |
266b5087 | 585 | connect_data = findWebIrc.call(this, connect_data); |
15fefff7 | 586 | |
e991ec2f | 587 | global.modules.emit('irc authorize', connect_data).done(function ircAuthorizeCb() { |
c14b67ae D |
588 | var gecos = '[www.kiwiirc.com] ' + that.nick; |
589 | ||
cb234b7e D |
590 | if (global.config.default_gecos) { |
591 | gecos = global.config.default_gecos.toString().replace('%n', that.nick); | |
03bf49a4 | 592 | gecos = gecos.toString().replace('%h', that.user.hostname); |
cb234b7e D |
593 | } |
594 | ||
bd7196e1 D |
595 | // Send any initial data for webirc/etc |
596 | if (connect_data.prepend_data) { | |
597 | _.each(connect_data.prepend_data, function(data) { | |
598 | that.write(data); | |
599 | }); | |
600 | } | |
601 | ||
602 | that.write('CAP LS'); | |
603 | ||
db8af19d | 604 | if (that.password) |
bd7196e1 | 605 | that.write('PASS ' + that.password); |
32a09dc1 | 606 | |
bd7196e1 | 607 | that.write('NICK ' + that.nick); |
cb234b7e | 608 | that.write('USER ' + that.username + ' 0 0 :' + gecos); |
32a09dc1 | 609 | |
bd7196e1 D |
610 | that.emit('connected'); |
611 | }); | |
7dfe47c6 | 612 | }; |
2a8e95d1 | 613 | |
15fefff7 | 614 | |
db8af19d D |
615 | |
616 | /** | |
617 | * Load any WEBIRC or alternative settings for this connection | |
618 | * Called in scope of the IrcConnection instance | |
619 | */ | |
15fefff7 | 620 | function findWebIrc(connect_data) { |
db8af19d D |
621 | var webirc_pass = global.config.webirc_pass, |
622 | ip_as_username = global.config.ip_as_username, | |
623 | tmp; | |
624 | ||
15fefff7 D |
625 | |
626 | // Do we have a WEBIRC password for this? | |
bd7196e1 | 627 | if (webirc_pass && webirc_pass[this.irc_host.hostname]) { |
db8af19d | 628 | // Build the WEBIRC line to be sent before IRC registration |
bd7196e1 D |
629 | tmp = 'WEBIRC ' + webirc_pass[this.irc_host.hostname] + ' KiwiIRC '; |
630 | tmp += this.user.hostname + ' ' + this.user.address; | |
db8af19d | 631 | |
15fefff7 D |
632 | connect_data.prepend_data = [tmp]; |
633 | } | |
634 | ||
635 | ||
636 | // Check if we need to pass the users IP as its username/ident | |
bd7196e1 | 637 | if (ip_as_username && ip_as_username.indexOf(this.irc_host.hostname) > -1) { |
15fefff7 | 638 | // Get a hex value of the clients IP |
e991ec2f | 639 | this.username = this.user.address.split('.').map(function ipSplitMapCb(i, idx){ |
32800bf5 D |
640 | var hex = parseInt(i, 10).toString(16); |
641 | ||
642 | // Pad out the hex value if it's a single char | |
643 | if (hex.length === 1) | |
644 | hex = '0' + hex; | |
645 | ||
646 | return hex; | |
15fefff7 D |
647 | }).join(''); |
648 | ||
649 | } | |
650 | ||
651 | return connect_data; | |
652 | } | |
653 | ||
654 | ||
db8af19d | 655 | /** |
8b967a99 | 656 | * Buffer any data we get from the IRCd until we have complete lines. |
db8af19d | 657 | */ |
8b967a99 D |
658 | function socketOnData(data) { |
659 | var data_pos, // Current position within the data Buffer | |
75083de9 D |
660 | line_start = 0, |
661 | lines = [], | |
f429dec1 JA |
662 | line = '', |
663 | max_buffer_size = 1024; // 1024 bytes is the maximum length of two RFC1459 IRC messages. | |
664 | // May need tweaking when IRCv3 message tags are more widespread | |
3ec786bc | 665 | |
a8d8af60 | 666 | // Split data chunk into individual lines |
75083de9 D |
667 | for (data_pos = 0; data_pos < data.length; data_pos++) { |
668 | if (data[data_pos] === 0x0A) { // Check if byte is a line feed | |
669 | lines.push(data.slice(line_start, data_pos)); | |
670 | line_start = data_pos + 1; | |
a8d8af60 JA |
671 | } |
672 | } | |
d1b3e8b3 | 673 | |
75083de9 D |
674 | // No complete lines of data? Check to see if buffering the data would exceed the max buffer size |
675 | if (!lines[0]) { | |
676 | if ((this.held_data ? this.held_data.length : 0 ) + data.length > max_buffer_size) { | |
f429dec1 JA |
677 | // Buffering this data would exeed our max buffer size |
678 | this.emit('error', 'Message buffer too large'); | |
679 | this.socket.destroy(); | |
75083de9 | 680 | |
f429dec1 | 681 | } else { |
75083de9 D |
682 | |
683 | // Append the incomplete line to our held_data and wait for more | |
f429dec1 JA |
684 | if (this.held_data) { |
685 | this.held_data = Buffer.concat([this.held_data, data], this.held_data.length + data.length); | |
686 | } else { | |
687 | this.held_data = data; | |
688 | } | |
f429dec1 | 689 | } |
75083de9 D |
690 | |
691 | // No complete lines to process.. | |
692 | return; | |
f429dec1 JA |
693 | } |
694 | ||
a8d8af60 JA |
695 | // If we have an incomplete line held from the previous chunk of data |
696 | // merge it with the first line from this chunk of data | |
697 | if (this.hold_last && this.held_data !== null) { | |
75083de9 | 698 | lines[0] = Buffer.concat([this.held_data, lines[0]], this.held_data.length + lines[0].length); |
2a8e95d1 | 699 | this.hold_last = false; |
a8d8af60 | 700 | this.held_data = null; |
2a8e95d1 | 701 | } |
db8af19d | 702 | |
a8d8af60 JA |
703 | // If the last line of data in this chunk is not complete, hold it so |
704 | // it can be merged with the first line from the next chunk | |
75083de9 D |
705 | if (line_start < data_pos) { |
706 | if ((data.length - line_start) > max_buffer_size) { | |
f429dec1 JA |
707 | // Buffering this data would exeed our max buffer size |
708 | this.emit('error', 'Message buffer too large'); | |
709 | this.socket.destroy(); | |
710 | return; | |
711 | } | |
75083de9 | 712 | |
2a8e95d1 | 713 | this.hold_last = true; |
75083de9 D |
714 | this.held_data = new Buffer(data.length - line_start); |
715 | data.copy(this.held_data, 0, line_start); | |
2a8e95d1 | 716 | } |
db8af19d | 717 | |
a8d8af60 | 718 | // Process our data line by line |
8b967a99 D |
719 | for (i = 0; i < lines.length; i++) |
720 | parseIrcLine.call(this, lines[i]); | |
721 | ||
722 | } | |
723 | ||
724 | ||
725 | ||
726 | /** | |
727 | * The regex that parses a line of data from the IRCd | |
728 | * Deviates from the RFC a little to support the '/' character now used in some | |
729 | * IRCds | |
730 | */ | |
b38c590f | 731 | var parse_regex = /^(?:(?:(?:@([^ ]+) )?):(?:([^\s!]+)|([^\s!]+)!([^\s@]+)@?([^\s]+)?) )?(\S+)(?: (?!:)(.+?))?(?: :(.*))?$/i; |
8b967a99 D |
732 | |
733 | function parseIrcLine(buffer_line) { | |
734 | var msg, | |
735 | i, j, | |
736 | tags = [], | |
737 | tag, | |
738 | line = ''; | |
739 | ||
740 | // Decode server encoding | |
741 | line = iconv.decode(buffer_line, this.encoding); | |
742 | if (!line) return; | |
743 | ||
744 | // Parse the complete line, removing any carriage returns | |
745 | msg = parse_regex.exec(line.replace(/^\r+|\r+$/, '')); | |
746 | ||
747 | if (!msg) { | |
748 | // The line was not parsed correctly, must be malformed | |
749 | console.log("Malformed IRC line: " + line.replace(/^\r+|\r+$/, '')); | |
750 | return; | |
751 | } | |
752 | ||
753 | // Extract any tags (msg[1]) | |
754 | if (msg[1]) { | |
755 | tags = msg[1].split(';'); | |
756 | ||
757 | for (j = 0; j < tags.length; j++) { | |
758 | tag = tags[j].split('='); | |
759 | tags[j] = {tag: tag[0], value: tag[1]}; | |
2a8e95d1 D |
760 | } |
761 | } | |
8b967a99 D |
762 | |
763 | msg = { | |
764 | tags: tags, | |
765 | prefix: msg[2], | |
766 | nick: msg[3], | |
767 | ident: msg[4], | |
768 | hostname: msg[5] || '', | |
769 | command: msg[6], | |
770 | params: msg[7] || '', | |
771 | trailing: (msg[8]) ? msg[8].trim() : '' | |
772 | }; | |
773 | ||
1662b6ce | 774 | msg.params = msg.params.split(/ +/); |
8b967a99 D |
775 | this.irc_commands.dispatch(msg.command.toUpperCase(), msg); |
776 | } |