3 * StatusNet, the distributed open-source microblogging tool
5 * utility functions for Jabber/GTalk/XMPP messages
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Evan Prodromou <evan@status.net>
25 * @copyright 2008 StatusNet, Inc.
26 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27 * @link http://status.net/
30 if (!defined('STATUSNET') && !defined('LACONICA')) {
34 require_once 'XMPPHP/XMPP.php';
37 * checks whether a string is a syntactically valid Jabber ID (JID)
39 * @param string $jid string to check
41 * @return boolean whether the string is a valid JID
44 function jabber_valid_base_jid($jid)
46 // Cheap but effective
47 return Validate::email($jid);
51 * normalizes a Jabber ID for comparison
53 * @param string $jid JID to check
55 * @return string an equivalent JID in normalized (lowercase) form
58 function jabber_normalize_jid($jid)
60 if (preg_match("/(?:([^\@]+)\@)?([^\/]+)(?:\/(.*))?$/", $jid, $matches)) {
62 $server = $matches[2];
63 return strtolower($node.'@'.$server);
70 * the JID of the Jabber daemon for this StatusNet instance
72 * @return string JID of the Jabber daemon
75 function jabber_daemon_address()
77 return common_config('xmpp', 'user') . '@' . common_config('xmpp', 'server');
80 class Sharing_XMPP extends XMPPHP_XMPP
89 * Build an XMPP proxy connection that'll save outgoing messages
90 * to the 'xmppout' queue to be picked up by xmppdaemon later.
92 * If queueing is disabled, we'll grab a live connection.
96 function jabber_proxy()
98 if (common_config('queue', 'enabled')) {
99 $proxy = new Queued_XMPP(common_config('xmpp', 'host') ?
100 common_config('xmpp', 'host') :
101 common_config('xmpp', 'server'),
102 common_config('xmpp', 'port'),
103 common_config('xmpp', 'user'),
104 common_config('xmpp', 'password'),
105 common_config('xmpp', 'resource') . 'daemon',
106 common_config('xmpp', 'server'),
107 common_config('xmpp', 'debug') ?
109 common_config('xmpp', 'debug') ?
110 XMPPHP_Log::LEVEL_VERBOSE : null);
113 return jabber_connect();
118 * Lazy-connect the configured Jabber account to the configured server;
119 * if already opened, the same connection will be returned.
121 * In a multi-site background process, each site configuration
122 * will get its own connection.
124 * @param string $resource Resource to connect (defaults to configured resource)
126 * @return XMPPHP connection to the configured server
129 function jabber_connect($resource=null)
131 static $connections = array();
132 $site = common_config('site', 'server');
133 if (empty($connections[$site])) {
134 if (empty($resource)) {
135 $resource = common_config('xmpp', 'resource');
137 $conn = new Sharing_XMPP(common_config('xmpp', 'host') ?
138 common_config('xmpp', 'host') :
139 common_config('xmpp', 'server'),
140 common_config('xmpp', 'port'),
141 common_config('xmpp', 'user'),
142 common_config('xmpp', 'password'),
144 common_config('xmpp', 'server'),
145 common_config('xmpp', 'debug') ?
147 common_config('xmpp', 'debug') ?
148 XMPPHP_Log::LEVEL_VERBOSE : null
154 $connections[$site] = $conn;
156 $conn->autoSubscribe();
157 $conn->useEncryption(common_config('xmpp', 'encryption'));
160 common_log(LOG_INFO, __METHOD__ . ": connecting " .
161 common_config('xmpp', 'user') . '/' . $resource);
162 //$conn->connect(true); // true = persistent connection
163 $conn->connect(); // persistent connections break multisite
164 } catch (XMPPHP_Exception $e) {
165 common_log(LOG_ERR, $e->getMessage());
169 $conn->processUntil('session_start');
171 return $connections[$site];
175 * Queue send for a single notice to a given Jabber address
177 * @param string $to JID to send the notice to
178 * @param Notice $notice notice to send
180 * @return boolean success value
183 function jabber_send_notice($to, $notice)
185 $conn = jabber_proxy();
186 $profile = Profile::staticGet($notice->profile_id);
188 common_log(LOG_WARNING, 'Refusing to send notice with ' .
189 'unknown profile ' . common_log_objstring($notice),
193 $msg = jabber_format_notice($profile, $notice);
194 $entry = jabber_format_entry($profile, $notice);
195 $conn->message($to, $msg, 'chat', null, $entry);
201 * extra information for XMPP messages, as defined by Twitter
203 * @param Profile $profile Profile of the sending user
204 * @param Notice $notice Notice being sent
206 * @return string Extra information (Atom, HTML, addresses) in string format
209 function jabber_format_entry($profile, $notice)
211 $entry = $notice->asAtomEntry(true, true);
213 $xs = new XMLStringer();
214 $xs->elementStart('html', array('xmlns' => 'http://jabber.org/protocol/xhtml-im'));
215 $xs->elementStart('body', array('xmlns' => 'http://www.w3.org/1999/xhtml'));
216 $xs->element('a', array('href' => $profile->profileurl),
219 if (!empty($notice->rendered)) {
220 $xs->raw($notice->rendered);
222 $xs->raw(common_render_content($notice->content, $notice));
225 $xs->element('a', array(
226 'href'=>common_local_url('conversation',
227 array('id' => $notice->conversation)).'#notice-'.$notice->id
228 ),sprintf(_('[%s]'),$notice->id));
229 $xs->elementEnd('body');
230 $xs->elementEnd('html');
232 $html = $xs->getString();
234 return $html . ' ' . $entry;
238 * sends a single text message to a given JID
240 * @param string $to JID to send the message to
241 * @param string $body body of the message
242 * @param string $type type of the message
243 * @param string $subject subject of the message
245 * @return boolean success flag
248 function jabber_send_message($to, $body, $type='chat', $subject=null)
250 $conn = jabber_proxy();
251 $conn->message($to, $body, $type, $subject);
256 * sends a presence stanza on the Jabber network
258 * @param string $status current status, free-form string
259 * @param string $show structured status value
260 * @param string $to recipient of presence, null for general
261 * @param string $type type of status message, related to $show
262 * @param int $priority priority of the presence
264 * @return boolean success value
267 function jabber_send_presence($status, $show='available', $to=null,
268 $type = 'available', $priority=null)
270 $conn = jabber_connect();
274 $conn->presence($status, $show, $to, $type, $priority);
279 * sends a confirmation request to a JID
281 * @param string $code confirmation code for confirmation URL
282 * @param string $nickname nickname of confirming user
283 * @param string $address JID to send confirmation to
285 * @return boolean success flag
288 function jabber_confirm_address($code, $nickname, $address)
290 $body = 'User "' . $nickname . '" on ' . common_config('site', 'name') . ' ' .
291 'has said that your Jabber ID belongs to them. ' .
292 'If that\'s true, you can confirm by clicking on this URL: ' .
293 common_local_url('confirmaddress', array('code' => $code)) .
294 ' . (If you cannot click it, copy-and-paste it into the ' .
295 'address bar of your browser). If that user isn\'t you, ' .
296 'or if you didn\'t request this confirmation, just ignore this message.';
298 return jabber_send_message($address, $body);
302 * sends a "special" presence stanza on the Jabber network
304 * @param string $type Type of presence
305 * @param string $to JID to send presence to
306 * @param string $show show value for presence
307 * @param string $status status value for presence
309 * @return boolean success flag
311 * @see jabber_send_presence()
314 function jabber_special_presence($type, $to=null, $show=null, $status=null)
316 // FIXME: why use this instead of jabber_send_presence()?
317 $conn = jabber_connect();
319 $to = htmlspecialchars($to);
320 $status = htmlspecialchars($status);
327 $out .= " type='$type'";
329 if ($show == 'available' and !$status) {
333 if ($show && ($show != 'available')) {
334 $out .= "<show>$show</show>";
337 $out .= "<status>$status</status>";
339 $out .= "</presence>";
345 * Queue broadcast of a notice to all subscribers and reply recipients
347 * This function will send a notice to all subscribers on the local server
348 * who have Jabber addresses, and have Jabber notification enabled, and
349 * have this subscription enabled for Jabber. It also sends the notice to
350 * all recipients of @-replies who have Jabber addresses and Jabber notification
351 * enabled. This is really the heart of Jabber distribution in StatusNet.
353 * @param Notice $notice The notice to broadcast
355 * @return boolean success flag
358 function jabber_broadcast_notice($notice)
360 if (!common_config('xmpp', 'enabled')) {
363 $profile = Profile::staticGet($notice->profile_id);
366 common_log(LOG_WARNING, 'Refusing to broadcast notice with ' .
367 'unknown profile ' . common_log_objstring($notice),
369 return true; // not recoverable; discard.
372 $msg = jabber_format_notice($profile, $notice);
373 $entry = jabber_format_entry($profile, $notice);
380 $conn = jabber_proxy();
382 $ni = $notice->whoGets();
384 foreach ($ni as $user_id => $reason) {
385 $user = User::staticGet($user_id);
387 empty($user->jabber) ||
388 !$user->jabbernotify) {
389 // either not a local user, or just not found
393 case NOTICE_INBOX_SOURCE_REPLY:
394 if (!$user->jabberreplies) {
398 case NOTICE_INBOX_SOURCE_SUB:
399 $sub = Subscription::pkeyGet(array('subscriber' => $user->id,
400 'subscribed' => $notice->profile_id));
401 if (empty($sub) || !$sub->jabber) {
405 case NOTICE_INBOX_SOURCE_GROUP:
408 throw new Exception(sprintf(_("Unknown inbox source %d."), $reason));
412 'Sending notice ' . $notice->id . ' to ' . $user->jabber,
414 $conn->message($user->jabber, $msg, 'chat', null, $entry);
421 * Queue send of a notice to all public listeners
423 * For notices that are generated on the local system (by users), we can optionally
424 * forward them to remote listeners by XMPP.
426 * @param Notice $notice notice to broadcast
428 * @return boolean success flag
431 function jabber_public_notice($notice)
433 // Now, users who want everything
435 $public = common_config('xmpp', 'public');
437 // FIXME PRIV don't send out private messages here
438 // XXX: should we send out non-local messages if public,localonly
439 // = false? I think not
441 if ($public && $notice->is_local == Notice::LOCAL_PUBLIC) {
442 $profile = Profile::staticGet($notice->profile_id);
445 common_log(LOG_WARNING, 'Refusing to broadcast notice with ' .
446 'unknown profile ' . common_log_objstring($notice),
448 return true; // not recoverable; discard.
451 $msg = jabber_format_notice($profile, $notice);
452 $entry = jabber_format_entry($profile, $notice);
454 $conn = jabber_proxy();
456 foreach ($public as $address) {
458 'Sending notice ' . $notice->id .
459 ' to public listener ' . $address,
461 $conn->message($address, $msg, 'chat', null, $entry);
470 * makes a plain-text formatted version of a notice, suitable for Jabber distribution
472 * @param Profile &$profile profile of the sending user
473 * @param Notice &$notice notice being sent
475 * @return string plain-text version of the notice, with user nickname prefixed
478 function jabber_format_notice(&$profile, &$notice)
480 return $profile->nickname . ': ' . $notice->content . ' [' . $notice->id . ']';