443 lines
12 KiB
PHP
Executable File
443 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, Controlez-Vous, 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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function xmppdaemon_error_handler($errno, $errstr, $errfile, $errline, $errcontext) {
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switch ($errno) {
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case E_USER_ERROR:
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echo "ERROR: [$errno] $errstr ($errfile:$errline)\n";
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echo " Fatal error on line $errline in file $errfile";
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echo ", PHP " . PHP_VERSION . " (" . PHP_OS . ")\n";
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echo "Aborting...\n";
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exit(1);
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break;
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case E_USER_WARNING:
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echo "WARNING [$errno] $errstr ($errfile:$errline)\n";
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break;
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case E_USER_NOTICE:
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echo "My NOTICE [$errno] $errstr ($errfile:$errline)\n";
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break;
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default:
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echo "Unknown error type: [$errno] $errstr ($errfile:$errline)\n";
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break;
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}
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/* Don't execute PHP internal error handler */
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return true;
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}
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set_error_handler('xmppdaemon_error_handler');
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# Abort if called from a web server
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if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
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print "This script must be run from the command line\n";
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exit();
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}
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define('INSTALLDIR', dirname(__FILE__));
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define('LACONICA', true);
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require_once(INSTALLDIR . '/lib/common.php');
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require_once(INSTALLDIR . '/lib/jabber.php');
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# This is kind of clunky; we create a class to call the global functions
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# in jabber.php, which create a new XMPP class. A more elegant (?) solution
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# might be to use make this a subclass of XMPP.
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class XMPPDaemon {
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function XMPPDaemon($resource=NULL) {
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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 = $resource;
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} else {
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$this->resource = common_config('xmpp', 'resource') . 'daemon';
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}
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$this->log(LOG_INFO, "{$this->user}@{$this->server}/{$this->resource}");
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}
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function connect() {
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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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return !$this->conn->isDisconnected();
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}
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function handle() {
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static $parts = array('message', 'presence',
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'end_stream', 'session_start');
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while(!$this->conn->isDisconnected()) {
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$payloads = $this->conn->processUntil($parts, 10);
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if ($payloads) {
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foreach($payloads as $event) {
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$pl = $event[1];
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switch($event[0]) {
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case 'message':
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$this->handle_message($pl);
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break;
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case 'presence':
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$this->handle_presence($pl);
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break;
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case 'session_start':
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$this->handle_session($pl);
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break;
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}
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}
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}
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$this->broadcast_queue();
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$this->confirmation_queue();
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}
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}
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function handle_session($pl) {
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# XXX what to do here?
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return true;
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}
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function get_user($from) {
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$user = User::staticGet('jabber', jabber_normalize_jid($from));
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return $user;
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}
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function get_confirmation($from) {
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$confirm = new Confirm_address();
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$confirm->address = $from;
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$confirm->address_type = 'jabber';
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if ($confirm->find(TRUE)) {
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return $confirm;
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} else {
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return NULL;
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}
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}
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function handle_message(&$pl) {
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if ($pl['type'] != 'chat') {
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return;
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}
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if (strlen($pl['body']) == 0) {
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return;
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}
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$from = jabber_normalize_jid($pl['from']);
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$user = $this->get_user($from);
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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, $pl['body'])) {
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return;
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} else if ($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 ' . $from);
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return;
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} else {
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$this->add_notice($user, $pl);
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}
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}
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function is_autoreply($txt) {
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if (preg_match('/[\[\(]?[Aa]uto-?[Rr]eply[\]\)]/', $txt)) {
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return true;
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} else {
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return false;
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}
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}
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function is_otr($txt) {
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if (preg_match('/^\?OTR/', $txt)) {
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return true;
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} else {
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return false;
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}
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}
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function from_site($address, $msg) {
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$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, $body) {
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# XXX: localise
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switch(trim($body)) {
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case 'on':
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$this->set_notify($user, true);
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$this->from_site($user->jabber, 'notifications on');
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return true;
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case 'off':
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$this->set_notify($user, false);
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$this->from_site($user->jabber, 'notifications off');
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return true;
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default:
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return false;
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}
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}
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function set_notify(&$user, $notify) {
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$orig = clone($user);
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$user->jabbernotify = $notify;
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$result = $user->update($orig);
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if (!$id) {
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$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
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$this->log(LOG_ERR,
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'Could not set notify flag to ' . $notify .
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' for user ' . common_log_objstring($user) .
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': ' . $last_error->message);
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} else {
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$this->log(LOG_INFO,
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'User ' . $user->nickname . ' set notify flag to ' . $notify);
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}
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}
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function add_notice(&$user, &$pl) {
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$notice = Notice::saveNew($user->id, trim(substr($pl['body'], 0, 140)), 'xmpp');
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if (is_string($notice)) {
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$this->log(LOG_ERR, $notice);
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return;
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}
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common_real_broadcast($notice);
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$this->log(LOG_INFO,
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'Added notice ' . $notice->id . ' from user ' . $user->nickname);
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}
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function handle_presence(&$pl) {
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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, $pl);
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}
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}
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break;
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}
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}
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function log($level, $msg) {
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common_log($level, 'XMPPDaemon('.$this->resource.'): '.$msg);
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}
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function subscribed($to) {
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jabber_special_presence('subscribed', $to);
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}
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function set_status($status) {
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$this->log(LOG_INFO, 'Setting status to "' . $status . '"');
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jabber_send_presence($status);
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}
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function top_queue_item() {
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$qi = new Queue_item();
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$qi->orderBy('created');
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$qi->whereAdd('claimed is NULL');
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$qi->limit(1);
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$cnt = $qi->find(TRUE);
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if ($cnt) {
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# XXX: potential race condition
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# can we force it to only update if claimed is still NULL
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# (or old)?
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$this->log(LOG_INFO, 'claiming queue item = ' . $qi->notice_id);
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$orig = clone($qi);
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$qi->claimed = DB_DataObject_Cast::dateTime();
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$result = $qi->update($orig);
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if ($result) {
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$this->log(LOG_INFO, 'claim succeeded.');
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return $qi;
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} else {
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$this->log(LOG_INFO, 'claim failed.');
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}
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}
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$qi = NULL;
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return NULL;
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}
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function broadcast_queue() {
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$this->clear_old_claims();
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$this->log(LOG_INFO, 'checking for queued notices');
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do {
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$qi = $this->top_queue_item();
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if ($qi) {
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$this->log(LOG_INFO, 'Got item enqueued '.common_exact_date($qi->created));
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$notice = Notice::staticGet($qi->notice_id);
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if ($notice) {
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$this->log(LOG_INFO, 'broadcasting notice ID = ' . $notice->id);
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# XXX: what to do if broadcast fails?
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$result = common_real_broadcast($notice, $this->is_remote($notice));
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if (!$result) {
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$this->log(LOG_WARNING, 'Failed broadcast for notice ID = ' . $notice->id);
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$orig = $qi;
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$qi->claimed = NULL;
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$qi->update($orig);
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$this->log(LOG_WARNING, 'Abandoned claim for notice ID = ' . $notice->id);
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continue;
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}
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$this->log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
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$notice = NULL;
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} else {
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$this->log(LOG_WARNING, 'queue item for notice that does not exist');
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}
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$qi->delete();
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}
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} while ($qi);
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}
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function clear_old_claims() {
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$qi = new Queue_item();
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$qi->claimed = NULL;
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$qi->whereAdd('now() - claimed > '.CLAIM_TIMEOUT);
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$qi->update(DB_DATAOBJECT_WHEREADD_ONLY);
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}
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function is_remote($notice) {
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$user = User::staticGet($notice->profile_id);
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return !$user;
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}
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function confirmation_queue() {
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# $this->clear_old_confirm_claims();
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$this->log(LOG_INFO, 'checking for queued confirmations');
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do {
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$confirm = $this->next_confirm();
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if ($confirm) {
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$this->log(LOG_INFO, 'Sending confirmation for ' . $confirm->address);
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$user = User::staticGet($confirm->user_id);
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if (!$user) {
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$this->log(LOG_WARNING, 'Confirmation for unknown user ' . $confirm->user_id);
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continue;
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}
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$success = jabber_confirm_address($confirm->code,
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$user->nickname,
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$confirm->address);
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if (!$success) {
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$this->log(LOG_ERR, 'Confirmation failed for ' . $confirm->address);
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# Just let the claim age out; hopefully things work then
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continue;
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} else {
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$this->log(LOG_INFO, 'Confirmation sent for ' . $confirm->address);
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# Mark confirmation sent
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$original = clone($confirm);
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$confirm->sent = $confirm->claimed;
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$result = $confirm->update($original);
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if (!$result) {
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$this->log(LOG_ERR, 'Cannot mark sent for ' . $confirm->address);
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# Just let the claim age out; hopefully things work then
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continue;
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}
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}
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}
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} while ($confirm);
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}
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function next_confirm() {
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$confirm = new Confirm_address();
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$confirm->whereAdd('claimed IS NULL');
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$confirm->whereAdd('sent IS NULL');
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# XXX: eventually we could do other confirmations in the queue, too
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$confirm->address_type = 'jabber';
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$confirm->orderBy('modified DESC');
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$confirm->limit(1);
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if ($confirm->find(TRUE)) {
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$this->log(LOG_INFO, 'Claiming confirmation for ' . $confirm->address);
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# working around some weird DB_DataObject behaviour
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$confirm->whereAdd(''); # clears where stuff
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$original = clone($confirm);
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$confirm->claimed = DB_DataObject_Cast::dateTime();
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$result = $confirm->update($original);
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if ($result) {
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$this->log(LOG_INFO, 'Succeeded in claim! '. $result);
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return $confirm;
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} else {
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$this->log(LOG_INFO, 'Failed in claim!');
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return false;
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}
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}
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return NULL;
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}
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function clear_old_confirm_claims() {
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$confirm = new Confirm();
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$confirm->claimed = NULL;
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$confirm->whereAdd('now() - claimed > '.CLAIM_TIMEOUT);
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$confirm->update(DB_DATAOBJECT_WHEREADD_ONLY);
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}
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}
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$resource = ($argc > 1) ? $argv[1] : NULL;
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$daemon = new XMPPDaemon($resource);
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if ($daemon->connect()) {
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$daemon->set_status("Send me a message to post a notice");
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$daemon->handle();
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}
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?>
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