415 lines
12 KiB
PHP
Executable File
415 lines
12 KiB
PHP
Executable File
#!/usr/bin/env php
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<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, 2009, Control Yourself, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
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$shortoptions = 'fi::';
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$longoptions = array('id::', 'foreground');
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$helptext = <<<END_OF_XMPP_HELP
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Daemon script for receiving new notices from Jabber users.
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-i --id Identity (default none)
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-f --foreground Stay in the foreground (default background)
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END_OF_XMPP_HELP;
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require_once INSTALLDIR.'/scripts/commandline.inc';
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require_once INSTALLDIR . '/lib/common.php';
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require_once INSTALLDIR . '/lib/jabber.php';
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require_once INSTALLDIR . '/lib/daemon.php';
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# This is kind of clunky; we create a class to call the global functions
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# in jabber.php, which create a new XMPP class. A more elegant (?) solution
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# might be to use make this a subclass of XMPP.
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class XMPPDaemon extends Daemon
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{
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function __construct($resource=null, $daemonize=true)
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{
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parent::__construct($daemonize);
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static $attrs = array('server', 'port', 'user', 'password', 'host');
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foreach ($attrs as $attr)
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{
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$this->$attr = common_config('xmpp', $attr);
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}
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if ($resource) {
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$this->resource = $resource . 'daemon';
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} else {
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$this->resource = common_config('xmpp', 'resource') . 'daemon';
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}
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$this->jid = $this->user.'@'.$this->server.'/'.$this->resource;
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$this->log(LOG_INFO, "INITIALIZE XMPPDaemon {$this->jid}");
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}
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function connect()
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{
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$connect_to = ($this->host) ? $this->host : $this->server;
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$this->log(LOG_INFO, "Connecting to $connect_to on port $this->port");
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$this->conn = jabber_connect($this->resource);
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if (!$this->conn) {
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return false;
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}
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$this->log(LOG_INFO, "Connected");
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$this->conn->setReconnectTimeout(600);
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$this->log(LOG_INFO, "Sending initial presence.");
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jabber_send_presence("Send me a message to post a notice", 'available',
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null, 'available', 100);
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$this->log(LOG_INFO, "Done connecting.");
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return !$this->conn->isDisconnected();
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}
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function name()
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{
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return strtolower('xmppdaemon.'.$this->resource);
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}
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function run()
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{
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if ($this->connect()) {
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$this->log(LOG_DEBUG, "Initializing stanza handlers.");
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$this->conn->addEventHandler('message', 'handle_message', $this);
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$this->conn->addEventHandler('presence', 'handle_presence', $this);
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$this->conn->addEventHandler('reconnect', 'handle_reconnect', $this);
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$this->log(LOG_DEBUG, "Beginning processing loop.");
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while ($this->conn->processTime(60)) {
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$this->sendPing();
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}
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}
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}
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function sendPing()
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{
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if (!isset($this->pingid)) {
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$this->pingid = 0;
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} else {
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$this->pingid++;
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}
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$this->log(LOG_DEBUG, "Sending ping #{$this->pingid}");
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$this->conn->send("<iq from='{$this->jid}' to='{$this->server}' id='ping_{$this->pingid}' type='get'><ping xmlns='urn:xmpp:ping'/></iq>");
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}
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function handle_reconnect(&$pl)
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{
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$this->log(LOG_DEBUG, "Got reconnection callback.");
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$this->conn->processUntil('session_start');
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$this->log(LOG_DEBUG, "Sending reconnection presence.");
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$this->conn->presence('Send me a message to post a notice', 'available', null, 'available', 100);
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unset($pl['xml']);
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$pl['xml'] = null;
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$pl = null;
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unset($pl);
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}
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function get_user($from)
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{
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$user = User::staticGet('jabber', jabber_normalize_jid($from));
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return $user;
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}
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function handle_message(&$pl)
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{
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$from = jabber_normalize_jid($pl['from']);
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if ($pl['type'] != 'chat') {
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$this->log(LOG_WARNING, "Ignoring message of type ".$pl['type']." from $from.");
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return;
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}
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if (mb_strlen($pl['body']) == 0) {
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$this->log(LOG_WARNING, "Ignoring message with empty body from $from.");
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return;
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}
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# Forwarded from another daemon (probably a broadcaster) for
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# us to handle
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if ($this->is_self($from)) {
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$this->log(LOG_INFO, "Got forwarded notice from self ($from).");
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$from = $this->get_ofrom($pl);
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$this->log(LOG_INFO, "Originally sent by $from.");
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if (is_null($from) || $this->is_self($from)) {
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$this->log(LOG_INFO, "Ignoring notice originally sent by $from.");
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return;
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}
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}
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$user = $this->get_user($from);
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// For common_current_user to work
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global $_cur;
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$_cur = $user;
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if (!$user) {
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$this->from_site($from, 'Unknown user; go to ' .
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common_local_url('imsettings') .
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' to add your address to your account');
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$this->log(LOG_WARNING, 'Message from unknown user ' . $from);
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return;
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}
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if ($this->handle_command($user, $pl['body'])) {
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$this->log(LOG_INFO, "Command messag by $from handled.");
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return;
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} else if ($this->is_autoreply($pl['body'])) {
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$this->log(LOG_INFO, 'Ignoring auto reply from ' . $from);
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return;
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} else if ($this->is_otr($pl['body'])) {
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$this->log(LOG_INFO, 'Ignoring OTR from ' . $from);
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return;
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} else if ($this->is_direct($pl['body'])) {
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$this->log(LOG_INFO, 'Got a direct message ' . $from);
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preg_match_all('/d[\ ]*([a-z0-9]{1,64})/', $pl['body'], $to);
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$to = preg_replace('/^d([\ ])*/', '', $to[0][0]);
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$body = preg_replace('/d[\ ]*('. $to .')[\ ]*/', '', $pl['body']);
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$this->log(LOG_INFO, 'Direct message from '. $user->nickname . ' to ' . $to);
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$this->add_direct($user, $body, $to, $from);
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} else {
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$this->log(LOG_INFO, 'Posting a notice from ' . $user->nickname);
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$this->add_notice($user, $pl);
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}
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$user->free();
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unset($user);
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unset($_cur);
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unset($pl['xml']);
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$pl['xml'] = null;
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$pl = null;
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unset($pl);
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}
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function is_self($from)
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{
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return preg_match('/^'.strtolower(jabber_daemon_address()).'/', strtolower($from));
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}
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function get_ofrom($pl)
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{
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$xml = $pl['xml'];
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$addresses = $xml->sub('addresses');
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if (!$addresses) {
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$this->log(LOG_WARNING, 'Forwarded message without addresses');
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return null;
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}
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$address = $addresses->sub('address');
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if (!$address) {
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$this->log(LOG_WARNING, 'Forwarded message without address');
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return null;
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}
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if (!array_key_exists('type', $address->attrs)) {
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$this->log(LOG_WARNING, 'No type for forwarded message');
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return null;
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}
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$type = $address->attrs['type'];
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if ($type != 'ofrom') {
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$this->log(LOG_WARNING, 'Type of forwarded message is not ofrom');
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return null;
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}
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if (!array_key_exists('jid', $address->attrs)) {
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$this->log(LOG_WARNING, 'No jid for forwarded message');
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return null;
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}
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$jid = $address->attrs['jid'];
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if (!$jid) {
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$this->log(LOG_WARNING, 'Could not get jid from address');
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return null;
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}
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$this->log(LOG_DEBUG, 'Got message forwarded from jid ' . $jid);
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return $jid;
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}
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function is_autoreply($txt)
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{
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if (preg_match('/[\[\(]?[Aa]uto[-\s]?[Rr]e(ply|sponse)[\]\)]/', $txt)) {
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return true;
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} else if (preg_match('/^System: Message wasn\'t delivered. Offline storage size was exceeded.$/', $txt)) {
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return true;
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} else {
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return false;
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}
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}
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function is_otr($txt)
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{
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if (preg_match('/^\?OTR/', $txt)) {
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return true;
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} else {
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return false;
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}
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}
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function is_direct($txt)
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{
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if (strtolower(substr($txt, 0, 2))=='d ') {
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return true;
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} else {
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return false;
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}
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}
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function from_site($address, $msg)
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{
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$text = '['.common_config('site', 'name') . '] ' . $msg;
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jabber_send_message($address, $text);
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}
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function handle_command($user, $body)
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{
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$inter = new CommandInterpreter();
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$cmd = $inter->handle_command($user, $body);
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if ($cmd) {
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$chan = new XMPPChannel($this->conn);
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$cmd->execute($chan);
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return true;
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} else {
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return false;
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}
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}
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function add_notice(&$user, &$pl)
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{
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$body = trim($pl['body']);
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$content_shortened = common_shorten_links($body);
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if (mb_strlen($content_shortened) > 140) {
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$from = jabber_normalize_jid($pl['from']);
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$this->from_site($from, "Message too long - maximum is 140 characters, you sent ".mb_strlen($content_shortened));
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return;
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}
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$notice = Notice::saveNew($user->id, $content_shortened, 'xmpp');
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if (is_string($notice)) {
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$this->log(LOG_ERR, $notice);
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$this->from_site($user->jabber, $notice);
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return;
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}
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common_broadcast_notice($notice);
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$this->log(LOG_INFO,
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'Added notice ' . $notice->id . ' from user ' . $user->nickname);
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$notice->free();
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unset($notice);
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}
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function handle_presence(&$pl)
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{
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$from = jabber_normalize_jid($pl['from']);
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switch ($pl['type']) {
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case 'subscribe':
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# We let anyone subscribe
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$this->subscribed($from);
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$this->log(LOG_INFO,
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'Accepted subscription from ' . $from);
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break;
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case 'subscribed':
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case 'unsubscribed':
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case 'unsubscribe':
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$this->log(LOG_INFO,
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'Ignoring "' . $pl['type'] . '" from ' . $from);
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break;
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default:
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if (!$pl['type']) {
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$user = User::staticGet('jabber', $from);
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if (!$user) {
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$this->log(LOG_WARNING, 'Presence from unknown user ' . $from);
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return;
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}
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if ($user->updatefrompresence) {
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$this->log(LOG_INFO, 'Updating ' . $user->nickname .
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' status from presence.');
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$this->add_notice($user, $pl);
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}
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$user->free();
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unset($user);
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}
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break;
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}
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unset($pl['xml']);
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$pl['xml'] = null;
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$pl = null;
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unset($pl);
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}
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function log($level, $msg)
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{
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$text = 'XMPPDaemon('.$this->resource.'): '.$msg;
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common_log($level, $text);
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if (!$this->daemonize)
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{
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$line = common_log_line($level, $text);
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echo $line;
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echo "\n";
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}
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}
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function subscribed($to)
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{
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jabber_special_presence('subscribed', $to);
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}
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}
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// Abort immediately if xmpp is not enabled, otherwise the daemon chews up
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// lots of CPU trying to connect to unconfigured servers
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if (common_config('xmpp','enabled')==false) {
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print "Aborting daemon - xmpp is disabled\n";
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exit();
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}
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if (have_option('i', 'id')) {
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$id = get_option_value('i', 'id');
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} else if (count($args) > 0) {
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$id = $args[0];
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} else {
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$id = null;
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}
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$foreground = have_option('f', 'foreground');
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$daemon = new XMPPDaemon($id, !$foreground);
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$daemon->runOnce();
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