3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2009, StatusNet, Inc.
6 * Send and receive notices using the XMPP network
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU Affero General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Affero General Public License for more details.
20 * You should have received a copy of the GNU Affero General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 * @author Evan Prodromou <evan@status.net>
26 * @copyright 2009 StatusNet, Inc.
27 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
28 * @link http://status.net/
31 if (!defined('STATUSNET')) {
32 // This check helps protect against security problems;
33 // your code file can't be executed directly from the web.
42 * @author Evan Prodromou <evan@status.net>
43 * @copyright 2009 StatusNet, Inc.
44 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
45 * @link http://status.net/
47 class XmppPlugin extends ImPlugin
49 const PLUGIN_VERSION = '2.0.0';
51 public $server = null;
53 public $user = 'update';
54 public $resource = 'gnusocial';
55 public $encryption = true;
56 public $password = null;
57 public $host = null; // only set if != server
58 public $debug = false; // print extra debug info
60 public $transport = 'xmpp';
62 function getDisplayName()
64 // TRANS: Plugin display name.
65 return _m('XMPP/Jabber');
68 function daemonScreenname()
70 $ret = $this->user . '@' . $this->server;
71 if ($this->resource) {
72 return $ret . '/' . $this->resource;
78 function validate($screenname)
80 return $this->validateBaseJid($screenname, common_config('email', 'check_domain'));
84 * Checks whether a string is a syntactically valid base Jabber ID (JID).
85 * A base JID won't include a resource specifier on the end; since we
86 * take it off when reading input we can't really use them reliably
87 * to direct outgoing messages yet (sorry guys!)
89 * Note that a bare domain can be a valid JID.
91 * @param string $jid string to check
92 * @param bool $check_domain whether we should validate that domain...
94 * @return boolean whether the string is a valid JID
96 protected function validateBaseJid($jid, $check_domain = false)
99 $parts = $this->splitJid($jid);
101 if (!$this->checkDomain($parts['domain'])) {
105 return ($parts['resource'] === null); // missing; empty ain't kosher
106 } catch (Exception $e) {
112 * Splits a Jabber ID (JID) into node, domain, and resource portions.
114 * Based on validation routine submitted by:
115 * @param string $jid string to check
117 * @return array with "node", "domain", and "resource" indices
118 * @throws Exception if input is not valid
119 * @license Licensed under ISC-L, which is compatible with everything else that keeps the copyright notice intact.
121 * @copyright 2009 Patrick Georgi <patrick@georgi-clan.de>
123 protected function splitJid($jid)
126 /* the following definitions come from stringprep, Appendix C,
127 which is used in its entirety by nodeprop, Chapter 5, "Prohibited Output" */
128 /* C1.1 ASCII space characters */
130 /* C1.2 Non-ASCII space characters */
131 $chars .= "\x{a0}\x{1680}\x{2000}-\x{200b}\x{202f}\x{205f}\x{3000a}";
132 /* C2.1 ASCII control characters */
133 $chars .= "\x{00}-\x{1f}\x{7f}";
134 /* C2.2 Non-ASCII control characters */
135 $chars .= "\x{80}-\x{9f}\x{6dd}\x{70f}\x{180e}\x{200c}\x{200d}\x{2028}\x{2029}\x{2060}-\x{2063}\x{206a}-\x{206f}\x{feff}\x{fff9}-\x{fffc}\x{1d173}-\x{1d17a}";
136 /* C3 - Private Use */
137 $chars .= "\x{e000}-\x{f8ff}\x{f0000}-\x{ffffd}\x{100000}-\x{10fffd}";
138 /* C4 - Non-character code points */
139 $chars .= "\x{fdd0}-\x{fdef}\x{fffe}\x{ffff}\x{1fffe}\x{1ffff}\x{2fffe}\x{2ffff}\x{3fffe}\x{3ffff}\x{4fffe}\x{4ffff}\x{5fffe}\x{5ffff}\x{6fffe}\x{6ffff}\x{7fffe}\x{7ffff}\x{8fffe}\x{8ffff}\x{9fffe}\x{9ffff}\x{afffe}\x{affff}\x{bfffe}\x{bffff}\x{cfffe}\x{cffff}\x{dfffe}\x{dffff}\x{efffe}\x{effff}\x{ffffe}\x{fffff}\x{10fffe}\x{10ffff}";
140 /* C5 - Surrogate codes */
141 // We can't use preg_match to check this, fix below
142 // $chars .= "\x{d800}-\x{dfff}";
143 /* C6 - Inappropriate for plain text */
144 $chars .= "\x{fff9}-\x{fffd}";
145 /* C7 - Inappropriate for canonical representation */
146 $chars .= "\x{2ff0}-\x{2ffb}";
147 /* C8 - Change display properties or are deprecated */
148 $chars .= "\x{340}\x{341}\x{200e}\x{200f}\x{202a}-\x{202e}\x{206a}-\x{206f}";
149 /* C9 - Tagging characters */
150 $chars .= "\x{e0001}\x{e0020}-\x{e007f}";
152 /* Nodeprep forbids some more characters */
153 $nodeprepchars = $chars;
154 $nodeprepchars .= "\x{22}\x{26}\x{27}\x{2f}\x{3a}\x{3c}\x{3e}\x{40}";
156 $parts = explode("/", $jid, 2);
157 if (count($parts) > 1) {
158 $resource = $parts[1];
159 // if ($resource == '') then
160 // Warning: empty resource isn't legit.
161 // But if we're normalizing, we may as well take it...
166 $node = explode("@", $parts[0]);
167 if ((count($node) > 2) || (count($node) == 0)) {
168 // TRANS: Exception thrown when using too many @ signs in a Jabber ID.
169 throw new Exception(_m('Invalid JID: too many @s.'));
170 } else if (count($node) == 1) {
177 // TRANS: Exception thrown when using @ sign not followed by a Jabber ID.
178 throw new Exception(_m('Invalid JID: @ but no node'));
182 if ($node !== null) {
183 // Length limits per http://xmpp.org/rfcs/rfc3920.html#addressing
184 if (strlen($node) > 1023) {
185 // TRANS: Exception thrown when using too long a Jabber ID (>1023).
186 throw new Exception(_m('Invalid JID: node too long.'));
188 // C5 - Surrogate codes is ensured by encoding check
189 if (preg_match("/[" . $nodeprepchars . "]/u", $node) || mb_detect_encoding($node, 'UTF-8', true) != 'UTF-8') {
190 // TRANS: Exception thrown when using an invalid Jabber ID.
191 // TRANS: %s is the invalid Jabber ID.
192 throw new Exception(sprintf(_m('Invalid JID node "%s".'), $node));
196 if (strlen($domain) > 1023) {
197 // TRANS: Exception thrown when using too long a Jabber domain (>1023).
198 throw new Exception(_m('Invalid JID: domain too long.'));
200 if (!common_valid_domain($domain)) {
201 // TRANS: Exception thrown when using an invalid Jabber domain name.
202 // TRANS: %s is the invalid domain name.
203 throw new Exception(sprintf(_m('Invalid JID domain name "%s".'), $domain));
206 if ($resource !== null) {
207 if (strlen($resource) > 1023) {
208 // TRANS: Exception thrown when using too long a resource (>1023).
209 throw new Exception("Invalid JID: resource too long.");
211 if (preg_match("/[" . $chars . "]/u", $resource)) {
212 // TRANS: Exception thrown when using an invalid Jabber resource.
213 // TRANS: %s is the invalid resource.
214 throw new Exception(sprintf(_m('Invalid JID resource "%s".'), $resource));
218 return array('node' => is_null($node) ? null : mb_strtolower($node),
219 'domain' => is_null($domain) ? null : mb_strtolower($domain),
220 'resource' => $resource);
224 * Check if this domain's got some legit DNS record
228 protected function checkDomain($domain)
230 if (checkdnsrr("_xmpp-server._tcp." . $domain, "SRV")) {
233 if (checkdnsrr($domain, "ANY")) {
240 * Load related modules when needed
242 * @param string $cls Name of the class to be loaded
244 * @return boolean hook value; true means continue processing, false means stop.
247 function onAutoload($cls)
251 require_once __DIR__ . '/extlib/XMPPHP/XMPP.php';
255 return parent::onAutoload($cls);
258 function onStartImDaemonIoManagers(&$classes)
260 parent::onStartImDaemonIoManagers($classes);
261 $classes[] = new XmppManager($this); // handles pings/reconnects
265 function sendMessage($screenname, $body)
267 $this->queuedConnection()->message($screenname, $body, 'chat');
271 * Build a queue-proxied XMPP interface object. Any outgoing messages
272 * will be run back through us for enqueing rather than sent directly.
275 * @throws Exception if server settings are invalid.
277 function queuedConnection()
279 if (!isset($this->server)) {
280 // TRANS: Exception thrown when the plugin configuration is incorrect.
281 throw new Exception(_m('You must specify a server in the configuration.'));
283 if (!isset($this->port)) {
284 // TRANS: Exception thrown when the plugin configuration is incorrect.
285 throw new Exception(_m('You must specify a port in the configuration.'));
287 if (!isset($this->user)) {
288 // TRANS: Exception thrown when the plugin configuration is incorrect.
289 throw new Exception(_m('You must specify a user in the configuration.'));
291 if (!isset($this->password)) {
292 // TRANS: Exception thrown when the plugin configuration is incorrect.
293 throw new Exception(_m('You must specify a password in the configuration.'));
296 return new QueuedXMPP($this, $this->host ?
307 \XMPPHP\Log::LEVEL_VERBOSE : null
311 function sendNotice($screenname, Notice $notice)
314 $msg = $this->formatNotice($notice);
315 $entry = $this->format_entry($notice);
316 } catch (Exception $e) {
317 common_log(LOG_ERR, __METHOD__ . ": Discarding outgoing stanza because of exception: {$e->getMessage()}");
318 return false; // return value of sendNotice is never actually used as of now
320 $this->queuedConnection()->message($screenname, $msg, 'chat', null, $entry);
325 * extra information for XMPP messages, as defined by Twitter
327 * @param Notice $notice Notice being sent
329 * @return string Extra information (Atom, HTML, addresses) in string format
331 protected function format_entry(Notice $notice)
333 $profile = $notice->getProfile();
335 $entry = $notice->asAtomEntry(true, true);
337 $xs = new XMLStringer();
338 $xs->elementStart('html', array('xmlns' => 'http://jabber.org/protocol/xhtml-im'));
339 $xs->elementStart('body', array('xmlns' => 'http://www.w3.org/1999/xhtml'));
340 $xs->element('a', array('href' => $profile->profileurl), $profile->nickname);
342 $parent = $notice->getParent();
343 $orig_profile = $parent->getProfile();
344 $orig_profurl = $orig_profile->getUrl();
346 $xs->element('a', array('href' => $orig_profurl), $orig_profile->nickname);
348 } catch (NoParentNoticeException $e) {
351 // FIXME: Why do we replace \t with ''? is it just to make it pretty? shouldn't whitespace be handled well...?
352 $xs->raw(str_replace("\t", "", $notice->getRendered()));
354 $xs->element('a', array(
355 'href' => common_local_url('conversation',
356 array('id' => $notice->conversation)) . '#notice-' . $notice->id),
357 // TRANS: Link description to notice in conversation.
358 // TRANS: %s is a notice ID.
359 sprintf(_m('[%u]'), $notice->id));
360 $xs->elementEnd('body');
361 $xs->elementEnd('html');
363 $html = $xs->getString();
365 return $html . ' ' . $entry;
368 function receiveRawMessage($pl)
370 $from = $this->normalize($pl['from']);
372 if ($pl['type'] != 'chat') {
373 $this->log(LOG_WARNING, "Ignoring message of type " . $pl['type'] . " from $from: " . $pl['xml']->toString());
377 if (mb_strlen($pl['body']) == 0) {
378 $this->log(LOG_WARNING, "Ignoring message with empty body from $from: " . $pl['xml']->toString());
382 $this->handleIncoming($from, $pl['body']);
388 * Normalizes a Jabber ID for comparison, dropping the resource component if any.
390 * @param string $jid JID to check
391 * @return string an equivalent JID in normalized (lowercase) form
393 function normalize($jid)
396 $parts = $this->splitJid($jid);
397 if ($parts['node'] !== null) {
398 return $parts['node'] . '@' . $parts['domain'];
400 return $parts['domain'];
402 } catch (Exception $e) {
408 * Add XMPP plugin daemon to the list of daemon to start
410 * @param array $daemons the list of daemons to run
412 * @return boolean hook return
414 function onGetValidDaemons(&$daemons)
416 if (isset($this->server) &&
417 isset($this->port) &&
418 isset($this->user) &&
419 isset($this->password)) {
424 . '/scripts/imdaemon.php'
432 * Plugin Nodeinfo information
434 * @param array $protocols
435 * @return bool hook true
437 public function onNodeInfoProtocols(array &$protocols)
439 $protocols[] = "xmpp";
443 function onPluginVersion(array &$versions)
445 $versions[] = array('name' => 'XMPP',
446 'version' => self::PLUGIN_VERSION,
447 'author' => 'Craig Andrews, Evan Prodromou',
448 'homepage' => 'https://git.gnu.io/gnu/gnu-social/tree/master/plugins/XMPP',
450 // TRANS: Plugin description.
451 _m('The XMPP plugin allows users to send and receive notices over the XMPP/Jabber network.'));
456 * Checks whether a string is a syntactically valid Jabber ID (JID),
457 * either with or without a resource.
459 * Note that a bare domain can be a valid JID.
461 * @param string $jid string to check
462 * @param bool $check_domain whether we should validate that domain...
464 * @return boolean whether the string is a valid JID
466 protected function validateFullJid($jid, $check_domain = false)
469 $parts = $this->splitJid($jid);
471 if (!$this->checkDomain($parts['domain'])) {
475 return $parts['resource'] !== ''; // missing or present; empty ain't kosher
476 } catch (Exception $e) {