summaryrefslogtreecommitdiff
path: root/plugins/Irc/ircmanager.php
blob: 6066293311cf11ed4d56d7d9cd91b909bcd64423 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
<?php
/*
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2008, 2009, StatusNet, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }

/**
 * IRC background connection manager for IRC-using queue handlers,
 * allowing them to send outgoing messages on the right connection.
 *
 * Input is handled during socket select loop, Any incoming messages will be handled.
 *
 * In a multi-site queuedaemon.php run, one connection will be instantiated
 * for each site being handled by the current process that has IRC enabled.
 */

class IrcManager extends ImManager {
    protected $conn = null;
    protected $lastPing = null;
    protected $messageWaiting = true;
    protected $lastMessage = null;

    protected $regChecks = array();
    protected $regChecksLookup = array();

    protected $connected = false;

    /**
     * Initialize connection to server.
     *
     * @return boolean true on success
     */
    public function start($master) {
        if (parent::start($master)) {
            $this->connect();
            return true;
        } else {
            return false;
        }
    }

    /**
    * Return any open sockets that the run loop should listen
    * for input on.
    *
    * @return array Array of socket resources
    */
    public function getSockets() {
        $this->connect();
        if ($this->conn) {
            return $this->conn->getSockets();
        } else {
            return array();
        }
    }

    /**
     * Request a maximum timeout for listeners before the next idle period.
     *
     * @return integer Maximum timeout
     */
    public function timeout() {
        if ($this->messageWaiting) {
            return 1;
        } else {
            return $this->plugin->pinginterval;
        }
    }

    /**
     * Idle processing for io manager's execution loop.
     *
     * @return void
     */
    public function idle() {
        // Send a ping if necessary
        if (empty($this->lastPing) || time() - $this->lastPing > $this->plugin->pinginterval) {
            $this->sendPing();
        }

        if ($this->connected) {
            // Send a waiting message if appropriate
            if ($this->messageWaiting && time() - $this->lastMessage > 1) {
                $wm = Irc_waiting_message::top();
                if ($wm === NULL) {
                    $this->messageWaiting = false;
                    return;
                }

                $data = unserialize($wm->data);
                $wm->incAttempts();

                if ($this->send_raw_message($data)) {
                    $wm->delete();
                } else {
                    if ($wm->attempts <= common_config('queue', 'max_retries')) {
                        // Try again next idle
                        $wm->releaseClaim();
                    } else {
                        // Exceeded the maximum number of retries
                        $wm->delete();
                    }
                }
            }
        }
    }

    /**
     * Process IRC events that have come in over the wire.
     *
     * @param resource $socket Socket to handle input on
     * @return void
     */
    public function handleInput($socket) {
        common_log(LOG_DEBUG, 'Servicing the IRC queue.');
        $this->stats('irc_process');

        try {
            $this->conn->handleEvents();
        } catch (Phergie_Driver_Exception $e) {
            $this->connected = false;
            $this->conn->reconnect();
        }
    }

    /**
    * Initiate connection
    *
    * @return void
    */
    public function connect() {
        if (!$this->conn) {
            $this->conn = new Phergie_StatusnetBot;

            $config = new Phergie_Config;
            $config->readArray(
                array(
                    'connections' => array(
                        array(
                            'host' => $this->plugin->host,
                            'port' => $this->plugin->port,
                            'username' => $this->plugin->username,
                            'realname' => $this->plugin->realname,
                            'nick' => $this->plugin->nick,
                            'password' => $this->plugin->password,
                            'transport' => $this->plugin->transporttype,
                            'encoding' => $this->plugin->encoding
                        )
                    ),

                    'driver' => 'statusnet',

                    'processor' => 'async',
                    'processor.options' => array('sec' => 0, 'usec' => 0),

                    'plugins' => array(
                        'Pong',
                        'NickServ',
                        'AutoJoin',
                        'Statusnet',
                    ),

                    'plugins.autoload' => true,

                    // Uncomment to enable debugging output
                    //'ui.enabled' => true,

                    'nickserv.password' => $this->plugin->nickservpassword,
                    'nickserv.identify_message' => $this->plugin->nickservidentifyregexp,

                    'autojoin.channels' => $this->plugin->channels,

                    'statusnet.messagecallback' => array($this, 'handle_irc_message'),
                    'statusnet.regcallback' => array($this, 'handle_reg_response'),
                    'statusnet.connectedcallback' => array($this, 'handle_connected'),
                    'statusnet.unregregexp' => $this->plugin->unregregexp,
                    'statusnet.regregexp' => $this->plugin->regregexp
                )
            );

            $this->conn->setConfig($config);
            $this->conn->connect();
            $this->lastPing = time();
            $this->lastMessage = time();
        }
        return $this->conn;
    }

    /**
    * Called via a callback when a message is received
    * Passes it back to the queuing system
    *
    * @param array $data Data
    * @return boolean
    */
    public function handle_irc_message($data) {
        $this->plugin->enqueueIncomingRaw($data);
        return true;
    }

    /**
    * Called via a callback when NickServ responds to
    * the bots query asking if a nick is registered
    *
    * @param array $data Data
    * @return void
    */
    public function handle_reg_response($data) {
        // Retrieve data
        $screenname = $data['screenname'];
        $nickdata = $this->regChecks[$screenname];
        $usernick = $nickdata['user']->nickname;

        if (isset($this->regChecksLookup[$usernick])) {
            if ($data['registered']) {
                // Send message
                $this->plugin->sendConfirmationCode($screenname, $nickdata['code'], $nickdata['user'], true);
            } else {
                $this->plugin->sendMessage($screenname, _m('Your nickname is not registered so IRC connectivity cannot be enabled'));

                $confirm = new Confirm_address();

                $confirm->user_id      = $user->id;
                $confirm->address_type = $this->plugin->transport;

                if ($confirm->find(true)) {
                    $result = $confirm->delete();

                    if (!$result) {
                        common_log_db_error($confirm, 'DELETE', __FILE__);
                        // TRANS: Server error thrown on database error canceling IM address confirmation.
                        $this->serverError(_('Couldn\'t delete confirmation.'));
                        return;
                    }
                }
            }

            // Unset lookup value
            unset($this->regChecksLookup[$usernick]);

            // Unset data
            unset($this->regChecks[$screename]);
        }
    }

    /**
    * Called when the connection is established
    *
    * @return void
    */
    public function handle_connected() {
        $this->connected = true;
    }

    /**
    * Enters a message into the database for sending when ready
    *
    * @param string $command Command
    * @param array $args Arguments
    * @return boolean
    */
    protected function enqueue_waiting_message($data) {
        $wm = new Irc_waiting_message();

        $wm->data       = serialize($data);
        $wm->prioritise = $data['prioritise'];
        $wm->attempts   = 0;
        $wm->created    = common_sql_now();
        $result         = $wm->insert();

        if (!$result) {
            common_log_db_error($wm, 'INSERT', __FILE__);
            throw new ServerException('DB error inserting IRC waiting queue item');
        }

        return true;
    }

    /**
     * Send a message using the daemon
     *
     * @param $data Message data
     * @return boolean true on success
     */
    public function send_raw_message($data) {
        $this->connect();
        if (!$this->conn) {
            return false;
        }

        if ($data['type'] != 'delayedmessage') {
            if ($data['type'] != 'message') {
                // Nick checking
                $nickdata = $data['nickdata'];
                $usernick = $nickdata['user']->nickname;
                $screenname = $nickdata['screenname'];

                // Cancel any existing checks for this user
                if (isset($this->regChecksLookup[$usernick])) {
                    unset($this->regChecks[$this->regChecksLookup[$usernick]]);
                }

                $this->regChecks[$screenname] = $nickdata;
                $this->regChecksLookup[$usernick] = $screenname;
            }

            // If there is a backlog or we need to wait, queue the message
            if ($this->messageWaiting || time() - $this->lastMessage < 1) {
                $this->enqueue_waiting_message(
                    array(
                        'type' => 'delayedmessage',
                        'prioritise' => $data['prioritise'],
                        'data' => $data['data']
                    )
                );
                $this->messageWaiting = true;
                return true;
            }
        }

        try {
            $this->conn->send($data['data']['command'], $data['data']['args']);
        } catch (Phergie_Driver_Exception $e) {
            $this->connected = false;
            $this->conn->reconnect();
            return false;
        }

        $this->lastMessage = time();
        return true;
    }

    /**
    * Sends a ping
    *
    * @return void
    */
    protected function sendPing() {
        $this->lastPing = time();
        $this->conn->send('PING', $this->lastPing);
    }
}