gnu-social/lib/jabber.php

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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
require_once('xmpp.php');
function jabber_valid_base_jid($jid) {
# Cheap but effective
return Validate::email($jid);
}
function jabber_normalize_jid($jid) {
if (preg_match("/(?:([^\@]+)\@)?([^\/]+)(?:\/(.*))?$/", $jid, $matches)) {
$node = $matches[1];
$server = $matches[2];
$resource = $matches[3];
return strtolower($node.'@'.$server);
} else {
return NULL;
}
}
function jabber_connect($resource=NULL) {
static $conn = NULL;
if (!$conn) {
$conn = new XMPP(common_config('xmpp', 'server'),
common_config('xmpp', 'port'),
common_config('xmpp', 'user'),
common_config('xmpp', 'password'),
($resource) ? $resource :
common_config('xmpp', 'resource'));
if (!$conn) {
return false;
}
$conn->connect(true); # try to get a persistent connection
if ($conn->disconnected) {
return false;
}
$conn->processUntil('session_start');
}
return $conn;
}
function jabber_send_message($to, $body, $type='chat', $subject=NULL) {
$conn = jabber_connect();
if (!$conn) {
return false;
}
$conn->message($to, $body, $type, $subject);
return true;
}
function jabber_send_presence($status=Null, $show='available', $to=Null) {
$conn = jabber_connect();
if (!$conn) {
return false;
}
$conn->presence($status, $show, $to);
return true;
}
function jabber_confirm_address($code, $nickname, $address) {
# FIXME: above arguments are unused, we start the process with a
# subscription
# XXX: no idea what we do if the update daemon is already subscribed.
jabber_special_presence('subscribe', $address);
}
function jabber_special_presence($type, $to=NULL, $show=NULL, $status=NULL) {
$conn = jabber_connect();
$to = htmlspecialchars($to);
$status = htmlspecialchars($status);
$out = "<presence";
if($to) $out .= " to='$to'";
if($type) $out .= " type='$type'";
if($show == 'available' and !$status) {
$out .= "/>";
} else {
$out .= ">";
if($show && ($show != 'available')) $out .= "<show>$show</show>";
if($status) $out .= "<status>$status</status>";
$out .= "</presence>";
}
$conn->send($out);
}
function jabber_broadcast_notice($notice) {
# First, get users subscribed to this profile
# XXX: use a join here rather than looping through results
$profile = Profile::staticGet($notice->profile_id);
if (!$profile) {
common_log(LOG_WARNING, 'Refusing to broadcast notice with ' .
'unknown profile ' . common_log_objstring($notice),
__FILE__);
return false;
}
$sub = new Subscription();
$sub->subscribed = $notice->profile_id;
if ($sub->find()) {
$msg = jabber_format_notice($profile, $notice);
while ($sub->fetch()) {
$user = User::staticGet($sub->subscriber);
if ($user && $user->jabber) {
jabber_send_message($user->jabber,
$msg);
}
}
}
}
function jabber_format_notice(&$profile, &$notice) {
return $profile->nickname . ': ' . $notice->content;
}