Commit | Line | Data |
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cefa0900 JA |
1 | var net = require('net'), |
2 | tls = require('tls'), | |
3 | util = require('util'), | |
4 | _ = require('lodash'), | |
5 | EventEmitter2 = require('eventemitter2').EventEmitter2, | |
4c25c0d7 | 6 | EventBinder = require('./eventbinder.js'), |
cefa0900 JA |
7 | IrcServer = require('./server.js'), |
8 | IrcChannel = require('./channel.js'), | |
9 | IrcUser = require('./user.js'); | |
2a8e95d1 | 10 | |
db8af19d | 11 | |
b09157de | 12 | var IrcConnection = function (hostname, port, ssl, nick, user, pass, state) { |
2a8e95d1 | 13 | var that = this; |
4c25c0d7 | 14 | |
cefa0900 JA |
15 | EventEmitter2.call(this,{ |
16 | wildcard: true, | |
17 | delimiter: ':' | |
18 | }); | |
4c25c0d7 | 19 | this.setMaxListeners(0); |
63008d5e | 20 | |
db8af19d | 21 | // Socket state |
63008d5e | 22 | this.connected = false; |
db8af19d D |
23 | |
24 | // If registeration with the IRCd has completed | |
63008d5e | 25 | this.registered = false; |
db8af19d D |
26 | |
27 | // If we are in the CAP negotiation stage | |
63008d5e | 28 | this.cap_negotiation = true; |
db8af19d D |
29 | |
30 | // User information | |
63008d5e D |
31 | this.nick = nick; |
32 | this.user = user; // Contains users real hostname and address | |
db8af19d D |
33 | this.username = this.nick.replace(/[^0-9a-zA-Z\-_.]/, ''); |
34 | this.password = pass; | |
b09157de JA |
35 | |
36 | // State object | |
37 | this.state = state; | |
cefa0900 JA |
38 | |
39 | // IrcServer object | |
40 | this.server = new IrcServer(this, hostname, port); | |
41 | ||
42 | // IrcUser objects | |
43 | this.irc_users = Object.create(null); | |
44 | ||
45 | // IrcChannel objects | |
46 | this.irc_channels = Object.create(null); | |
db8af19d D |
47 | |
48 | // IRC connection information | |
63008d5e D |
49 | this.irc_host = {hostname: hostname, port: port}; |
50 | this.ssl = !(!ssl); | |
db8af19d D |
51 | |
52 | // Options sent by the IRCd | |
63008d5e D |
53 | this.options = Object.create(null); |
54 | this.cap = {requested: [], enabled: []}; | |
db8af19d D |
55 | |
56 | // Is SASL supported on the IRCd | |
63008d5e D |
57 | this.sasl = false; |
58 | ||
db8af19d | 59 | // Buffers for data sent from the IRCd |
63008d5e D |
60 | this.hold_last = false; |
61 | this.held_data = ''; | |
62 | ||
4c25c0d7 | 63 | this.applyIrcEvents(); |
db8af19d D |
64 | |
65 | // Call any modules before making the connection | |
66 | global.modules.emit('irc:connecting', {connection: this}) | |
67 | .done(function () { | |
68 | that.connect(); | |
69 | }); | |
63008d5e | 70 | }; |
cefa0900 | 71 | util.inherits(IrcConnection, EventEmitter2); |
63008d5e D |
72 | |
73 | module.exports.IrcConnection = IrcConnection; | |
74 | ||
f9ff7686 | 75 | |
db8af19d | 76 | |
4c25c0d7 D |
77 | IrcConnection.prototype.applyIrcEvents = function () { |
78 | // Listen for events on the IRC connection | |
79 | this.irc_events = { | |
80 | 'server:*:connect': onServerConnect, | |
81 | 'channel:*:join': onChannelJoin, | |
df6d68a5 D |
82 | |
83 | // TODO: uncomment when using an IrcUser per nick | |
84 | //'user:*:privmsg': onUserPrivmsg, | |
9be602fc | 85 | 'user:*:nick': onUserNick, |
4c25c0d7 D |
86 | 'channel:*:part': onUserParts, |
87 | 'channel:*:quit': onUserParts, | |
88 | 'channel:*:kick': onUserParts | |
89 | }; | |
90 | ||
91 | EventBinder.bindIrcEvents('', this.irc_events, this, this); | |
92 | }; | |
93 | ||
db8af19d D |
94 | |
95 | /** | |
96 | * Start the connection to the IRCd | |
97 | */ | |
63008d5e D |
98 | IrcConnection.prototype.connect = function () { |
99 | var that = this; | |
100 | ||
db8af19d D |
101 | // The socket connect event to listener for |
102 | var socket_connect_event_name = 'connect'; | |
103 | ||
104 | ||
105 | // Make sure we don't already have an open connection | |
106 | this.disposeSocket(); | |
107 | ||
108 | // Open either a secure or plain text socket | |
63008d5e | 109 | if (this.ssl) { |
36108ca9 | 110 | this.socket = tls.connect({ |
63008d5e D |
111 | host: this.irc_host.hostname, |
112 | port: this.irc_host.port, | |
36108ca9 | 113 | rejectUnauthorized: global.config.reject_unauthorised_certificates |
36108ca9 | 114 | }); |
db8af19d D |
115 | |
116 | socket_connect_event_name = 'secureConnect'; | |
117 | ||
2a8e95d1 | 118 | } else { |
db8af19d D |
119 | this.socket = net.connect({ |
120 | host: this.irc_host.hostname, | |
121 | port: this.irc_host.port | |
2a8e95d1 D |
122 | }); |
123 | } | |
db8af19d D |
124 | |
125 | this.socket.setEncoding('utf-8'); | |
126 | ||
127 | this.socket.on(socket_connect_event_name, function () { | |
128 | that.connected = true; | |
129 | socketConnectHandler.apply(that, arguments); | |
130 | }); | |
131 | ||
d2d91c10 D |
132 | this.socket.on('error', function (event) { |
133 | that.emit('error', event); | |
db8af19d | 134 | |
2a8e95d1 D |
135 | }); |
136 | ||
2a8e95d1 D |
137 | this.socket.on('data', function () { |
138 | parse.apply(that, arguments); | |
139 | }); | |
140 | ||
db8af19d D |
141 | this.socket.on('close', function (had_error) { |
142 | that.connected = false; | |
2a8e95d1 | 143 | that.emit('close'); |
db8af19d D |
144 | |
145 | // Close the whole socket down | |
146 | that.disposeSocket(); | |
2a8e95d1 | 147 | }); |
2a8e95d1 | 148 | }; |
2a8e95d1 | 149 | |
3c91bff8 JA |
150 | /** |
151 | * Send an event to the client | |
152 | */ | |
153 | IrcConnection.prototype.clientEvent = function (event_name, data, callback) { | |
154 | data.server = this.con_num; | |
155 | this.state.sendIrcCommand(event_name, data, callback); | |
156 | }; | |
db8af19d D |
157 | |
158 | /** | |
159 | * Write a line of data to the IRCd | |
160 | */ | |
2a8e95d1 | 161 | IrcConnection.prototype.write = function (data, callback) { |
db8af19d | 162 | this.socket.write(data + '\r\n', 'utf-8', callback); |
2a8e95d1 D |
163 | }; |
164 | ||
db8af19d D |
165 | |
166 | ||
167 | /** | |
168 | * Close the connection to the IRCd after sending one last line | |
169 | */ | |
2a8e95d1 | 170 | IrcConnection.prototype.end = function (data, callback) { |
db8af19d D |
171 | if (data) |
172 | this.write(data); | |
173 | ||
174 | this.socket.end(); | |
2a8e95d1 D |
175 | }; |
176 | ||
db8af19d D |
177 | |
178 | ||
179 | /** | |
180 | * Clean up this IrcConnection instance and any sockets | |
181 | */ | |
c08717da | 182 | IrcConnection.prototype.dispose = function () { |
cefa0900 JA |
183 | _.each(this.irc_users, function (user) { |
184 | user.dispose(); | |
185 | }); | |
186 | _.each(this.irc_channels, function (chan) { | |
187 | chan.dispose(); | |
188 | }); | |
ebe178d6 D |
189 | this.irc_users = undefined; |
190 | this.irc_channels = undefined; | |
191 | ||
192 | this.server.dispose(); | |
193 | this.server = undefined; | |
4c25c0d7 D |
194 | |
195 | EventBinder.unbindIrcEvents('', this.irc_events, this); | |
196 | ||
db8af19d | 197 | this.disposeSocket(); |
c08717da D |
198 | this.removeAllListeners(); |
199 | }; | |
200 | ||
201 | ||
2a8e95d1 | 202 | |
db8af19d D |
203 | /** |
204 | * Clean up any sockets for this IrcConnection | |
205 | */ | |
206 | IrcConnection.prototype.disposeSocket = function () { | |
207 | if (this.socket) { | |
6b8fa7a6 | 208 | this.socket.end(); |
db8af19d D |
209 | this.socket.removeAllListeners(); |
210 | this.socket = null; | |
211 | } | |
2a8e95d1 D |
212 | }; |
213 | ||
214 | ||
db8af19d | 215 | |
4c25c0d7 D |
216 | function onChannelJoin(event) { |
217 | var chan; | |
218 | ||
219 | // Only deal with ourselves joining a channel | |
220 | if (event.nick !== this.nick) | |
221 | return; | |
222 | ||
223 | // We should only ever get a JOIN command for a channel | |
224 | // we're not already a member of.. but check we don't | |
225 | // have this channel in case something went wrong somewhere | |
226 | // at an earlier point | |
227 | if (!this.irc_channels[event.channel]) { | |
228 | chan = new IrcChannel(this, event.channel); | |
229 | this.irc_channels[event.channel] = chan; | |
230 | chan.irc_events.join.call(chan, event); | |
231 | } | |
232 | } | |
233 | ||
234 | ||
235 | function onServerConnect(event) { | |
236 | this.nick = event.nick; | |
df6d68a5 D |
237 | |
238 | // TODO: use `event.nick` instead of `'*'` when using an IrcUser per nick | |
239 | this.irc_users[event.nick] = new IrcUser(this, '*'); | |
4c25c0d7 D |
240 | } |
241 | ||
242 | ||
243 | function onUserPrivmsg(event) { | |
244 | var user; | |
245 | ||
246 | // Only deal with messages targetted to us | |
247 | if (event.channel !== this.nick) | |
248 | return; | |
249 | ||
250 | if (!this.irc_users[event.nick]) { | |
251 | user = new IrcUser(this, event.nick); | |
252 | this.irc_users[event.nick] = user; | |
253 | user.irc_events.privmsg.call(user, event); | |
254 | } | |
255 | } | |
256 | ||
257 | ||
9be602fc D |
258 | function onUserNick(event) { |
259 | var user; | |
260 | ||
261 | // Only deal with messages targetted to us | |
262 | if (event.nick !== this.nick) | |
263 | return; | |
264 | ||
265 | this.nick = event.newnick; | |
266 | } | |
267 | ||
268 | ||
4c25c0d7 D |
269 | function onUserParts(event) { |
270 | // Only deal with ourselves leaving a channel | |
271 | if (event.nick !== this.nick) | |
272 | return; | |
273 | ||
274 | if (this.irc_channels[event.channel]) { | |
275 | this.irc_channels[event.channel].dispose(); | |
276 | delete this.irc_channels[event.channel]; | |
277 | } | |
278 | } | |
279 | ||
280 | ||
281 | ||
282 | ||
db8af19d D |
283 | /** |
284 | * Handle the socket connect event, starting the IRCd registration | |
285 | */ | |
286 | var socketConnectHandler = function () { | |
15fefff7 D |
287 | var that = this, |
288 | connect_data; | |
289 | ||
290 | // Build up data to be used for webirc/etc detection | |
291 | connect_data = { | |
bd7196e1 D |
292 | connection: this, |
293 | ||
294 | // Array of lines to be sent to the IRCd before anything else | |
295 | prepend_data: [] | |
15fefff7 D |
296 | }; |
297 | ||
298 | // Let the webirc/etc detection modify any required parameters | |
266b5087 | 299 | connect_data = findWebIrc.call(this, connect_data); |
15fefff7 | 300 | |
bd7196e1 D |
301 | global.modules.emit('irc:authorize', connect_data).done(function () { |
302 | // Send any initial data for webirc/etc | |
303 | if (connect_data.prepend_data) { | |
304 | _.each(connect_data.prepend_data, function(data) { | |
305 | that.write(data); | |
306 | }); | |
307 | } | |
308 | ||
309 | that.write('CAP LS'); | |
310 | ||
db8af19d | 311 | if (that.password) |
bd7196e1 | 312 | that.write('PASS ' + that.password); |
db8af19d | 313 | |
bd7196e1 D |
314 | that.write('NICK ' + that.nick); |
315 | that.write('USER ' + that.username + ' 0 0 :' + '[www.kiwiirc.com] ' + that.nick); | |
316 | ||
bd7196e1 D |
317 | that.emit('connected'); |
318 | }); | |
7dfe47c6 | 319 | }; |
2a8e95d1 | 320 | |
15fefff7 | 321 | |
db8af19d D |
322 | |
323 | /** | |
324 | * Load any WEBIRC or alternative settings for this connection | |
325 | * Called in scope of the IrcConnection instance | |
326 | */ | |
15fefff7 | 327 | function findWebIrc(connect_data) { |
db8af19d D |
328 | var webirc_pass = global.config.webirc_pass, |
329 | ip_as_username = global.config.ip_as_username, | |
330 | tmp; | |
331 | ||
15fefff7 D |
332 | |
333 | // Do we have a WEBIRC password for this? | |
bd7196e1 | 334 | if (webirc_pass && webirc_pass[this.irc_host.hostname]) { |
db8af19d | 335 | // Build the WEBIRC line to be sent before IRC registration |
bd7196e1 D |
336 | tmp = 'WEBIRC ' + webirc_pass[this.irc_host.hostname] + ' KiwiIRC '; |
337 | tmp += this.user.hostname + ' ' + this.user.address; | |
db8af19d | 338 | |
15fefff7 D |
339 | connect_data.prepend_data = [tmp]; |
340 | } | |
341 | ||
342 | ||
343 | // Check if we need to pass the users IP as its username/ident | |
bd7196e1 | 344 | if (ip_as_username && ip_as_username.indexOf(this.irc_host.hostname) > -1) { |
15fefff7 | 345 | // Get a hex value of the clients IP |
bd7196e1 | 346 | this.username = this.user.address.split('.').map(function(i, idx){ |
15fefff7 D |
347 | return parseInt(i, 10).toString(16); |
348 | }).join(''); | |
349 | ||
350 | } | |
351 | ||
352 | return connect_data; | |
353 | } | |
354 | ||
355 | ||
356 | ||
db8af19d D |
357 | /** |
358 | * The regex that parses a line of data from the IRCd | |
359 | * Deviates from the RFC a little to support the '/' character now used in some | |
360 | * IRCds | |
361 | */ | |
362 | var parse_regex = /^(?:(?:(?:(@[^ ]+) )?):(?:([a-z0-9\x5B-\x60\x7B-\x7D\.\-]+)|([a-z0-9\x5B-\x60\x7B-\x7D\.\-]+)!([a-z0-9~\.\-_|]+)@?([a-z0-9\.\-:\/_]+)?) )?(\S+)(?: (?!:)(.+?))?(?: :(.+))?$/i; | |
363 | ||
2a8e95d1 D |
364 | var parse = function (data) { |
365 | var i, | |
366 | msg, | |
16e717f5 JA |
367 | msg2, |
368 | trm, | |
369 | j, | |
370 | tags = [], | |
371 | tag; | |
2a8e95d1 | 372 | |
db8af19d | 373 | if (this.hold_last && this.held_data !== '') { |
2a8e95d1 D |
374 | data = this.held_data + data; |
375 | this.hold_last = false; | |
376 | this.held_data = ''; | |
377 | } | |
db8af19d D |
378 | |
379 | // If the last line is incomplete, hold it until we have more data | |
2a8e95d1 D |
380 | if (data.substr(-1) !== '\n') { |
381 | this.hold_last = true; | |
382 | } | |
db8af19d D |
383 | |
384 | // Process our data line by line | |
2a8e95d1 D |
385 | data = data.split("\n"); |
386 | for (i = 0; i < data.length; i++) { | |
db8af19d D |
387 | if (!data[i]) break; |
388 | ||
389 | // If flagged to hold the last line, store it and move on | |
390 | if (this.hold_last && (i === data.length - 1)) { | |
391 | this.held_data = data[i]; | |
392 | break; | |
393 | } | |
394 | ||
395 | // Parse the complete line, removing any carriage returns | |
396 | msg = parse_regex.exec(data[i].replace(/^\r+|\r+$/, '')); | |
2a8e95d1 | 397 | |
db8af19d D |
398 | if (msg) { |
399 | if (msg[1]) { | |
400 | tags = msg[1].split(';'); | |
401 | for (j = 0; j < tags.length; j++) { | |
402 | tag = tags[j].split('='); | |
403 | tags[j] = {tag: tag[0], value: tag[1]}; | |
16e717f5 | 404 | } |
2a8e95d1 | 405 | } |
db8af19d D |
406 | msg = { |
407 | tags: tags, | |
408 | prefix: msg[2], | |
409 | nick: msg[3], | |
410 | ident: msg[4], | |
411 | hostname: msg[5] || '', | |
412 | command: msg[6], | |
413 | params: msg[7] || '', | |
414 | trailing: (msg[8]) ? msg[8].trim() : '' | |
415 | }; | |
416 | msg.params = msg.params.split(' '); | |
417 | ||
418 | this.emit('irc_' + msg.command.toUpperCase(), msg); | |
419 | ||
420 | } else { | |
421 | ||
422 | // The line was not parsed correctly, must be malformed | |
423 | console.log("Malformed IRC line: " + data[i].replace(/^\r+|\r+$/, '')); | |
2a8e95d1 D |
424 | } |
425 | } | |
426 | }; |