xmppdaemon.php

   1 <?php
   2 /*
   3  * Laconica - a distributed open-source microblogging tool
   4  * Copyright (C) 2008, Controlez-Vous, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 # Abort if called from a web server
  21 if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
  22         print "This script must be run from the command line\n";
  23         exit();
  24 }
  25
  26 define('INSTALLDIR', dirname(__FILE__));
  27 define('LACONICA', true);
  28
  29 require_once(INSTALLDIR . '/lib/common.php');
  30 require_once('xmpp.php');
  31
  32 class XMPPDaemon {
  33
  34         function XMPPDaemon() {
  35                 foreach (array('server', 'port', 'user', 'password', 'resource') as $attr) {
  36                         $this->$attr = common_config('xmpp', $attr);
  37                 }
  38         }
  39
  40         function connect() {
  41                 $this->conn = new XMPP($this->host, $this->port, $this->user,
  42                                                            $this->password, $this->resource);
  43                 if (!$this->conn) {
  44                         return false;
  45                 }
  46                 $this->conn->connect();
  47                 return !$this->conn->disconnected;
  48         }
  49
  50         function handle() {
  51                 while(!$this->conn->disconnected) {
  52                         $payloads = $this->conn->processUntil(array('message', 'presence',
  53                                                                                                                 'end_stream', 'session_start'));
  54                         foreach($payloads as $event) {
  55                                 $pl = $event[1];
  56                                 switch($event[0]) {
  57                                  case 'message':
  58                                         $this->handle_message($pl);
  59                                         break;
  60                                  case 'presence':
  61                                         $this->handle_presence($pl);
  62                                         break;
  63                                  case 'session_start':
  64                                         $this->handle_session($pl);
  65                                         break;
  66                                 }
  67                         }
  68                 }
  69         }
  70
  71         function handle_message(&$pl) {
  72                 $user = User::staticGet('jabber', $pl['from']);
  73                 if (!$user) {
  74                         $this->log(LOG_WARNING, 'Message from unknown user ' . $pl['from']);
  75                         return;
  76                 }
  77                 if ($this->handle_command($user, $pl['body'])) {
  78                         return;
  79                 } else {
  80                         $this->add_notice($user, $pl);
  81                 }
  82         }
  83
  84         function handle_command($user, $body) {
  85                 # XXX: localise
  86                 switch(trim($body)) {
  87                  case 'on':
  88                         $this->set_notify($user, true);
  89                         return true;
  90                  case 'off':
  91                         $this->set_notify($user, false);
  92                         return true;
  93                  default:
  94                         return false;
  95                 }
  96         }
  97
  98         function set_notify(&$user, $notify) {
  99                 $orig = clone($user);
 100                 $user->jabbernotify = $notify;
 101                 $result = $user->update($orig);
 102                 if (!$id) {
 103                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 104                         $this->log(LOG_ERROR,
 105                                            'Could not set notify flag to ' . $notify .
 106                                            ' for user ' . common_log_objstring($user) .
 107                                            ': ' . $last_error->message);
 108                 } else {
 109                         $this->log(LOG_INFO,
 110                                            'User ' . $user->nickname . ' set notify flag to ' . $notify);
 111                 }
 112         }
 113
 114         function add_notice(&$user, &$pl) {
 115                 $notice = new Notice();
 116                 $notice->profile_id = $user->id;
 117                 $notice->content = trim(substr($pl['body'], 0, 140));
 118                 $notice->created = DB_DataObject_Cast::dateTime();
 119                 $notice->query('BEGIN');
 120                 $id = $notice->insert();
 121                 if (!$id) {
 122                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 123                         $this->log(LOG_ERROR,
 124                                            'Could not insert ' . common_log_objstring($notice) .
 125                                            ' for user ' . common_log_objstring($user) .
 126                                            ': ' . $last_error->message);
 127                         return;
 128                 }
 129                 $orig = clone($notice);
 130                 $notice->uri = common_notice_uri($notice);
 131                 $result = $notice->update($orig);
 132                 if (!$result) {
 133                         $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
 134                         $this->log(LOG_ERROR,
 135                                            'Could not add URI to ' . common_log_objstring($notice) .
 136                                            ' for user ' . common_log_objstring($user) .
 137                                            ': ' . $last_error->message);
 138                         return;
 139                 }
 140                 common_broadcast_notice($notice);
 141                 $this->log(LOG_INFO,
 142                                    'Added notice ' . $notice->id . ' from user ' . $user->nickname);
 143         }
 144
 145         function handle_presence(&$pl) {
 146                 $user = User::staticGet('jabber', $pl['from']);
 147                 if (!$user) {
 148                         $this->log(LOG_WARNING, 'Message from unknown user ' . $pl['from']);
 149                         return;
 150                 }
 151                 if ($user->updatefrompresence) {
 152                         $this->add_notice($user, $pl);
 153                 }
 154         }
 155
 156         function handle_session(&$pl) {
 157                 $conn->presence($status="Send me a message to post a notice");
 158         }
 159
 160         function log($level, $msg) {
 161                 common_log($level, 'XMPPDaemon('.$this->resource.'): '.$msg);
 162         }
 163 }
 164
 165 $daemon = new XMPPDaemon();
 166
 167 if ($daemon->connect()) {
 168         $daemon->handle();
 169 }
 170 ?>