gnu-social/extlib/XMPPHP/XMPP.php

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<?php
/**
* XMPPHP: The PHP XMPP Library
* Copyright (C) 2008 Nathanael C. Fritz
* This file is part of SleekXMPP.
*
* XMPPHP is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* XMPPHP 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XMPPHP; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @category xmpphp
* @package XMPPHP
* @author Nathanael C. Fritz <JID: fritzy@netflint.net>
* @author Stephan Wentz <JID: stephan@jabber.wentz.it>
* @copyright 2008 Nathanael C. Fritz
*/
/** XMPPHP_XMLStream */
require_once "XMLStream.php";
/**
* XMPPHP Main Class
*
* @category xmpphp
* @package XMPPHP
* @author Nathanael C. Fritz <JID: fritzy@netflint.net>
* @author Stephan Wentz <JID: stephan@jabber.wentz.it>
* @copyright 2008 Nathanael C. Fritz
* @version $Id$
*/
class XMPPHP_XMPP extends XMPPHP_XMLStream {
/**
* @var string
*/
protected $server;
/**
* @var string
*/
protected $user;
/**
* @var string
*/
protected $password;
/**
* @var string
*/
protected $resource;
/**
* @var string
*/
protected $fulljid;
/**
* @var string
*/
protected $basejid;
/**
* @var boolean
*/
protected $authed = false;
/**
* @var boolean
*/
protected $auto_subscribe = false;
/**
* @var boolean
*/
protected $use_encryption = true;
/**
* Constructor
*
* @param string $host
* @param integer $port
* @param string $user
* @param string $password
* @param string $resource
* @param string $server
* @param boolean $printlog
* @param string $loglevel
*/
public function __construct($host, $port, $user, $password, $resource, $server = null, $printlog = false, $loglevel = null) {
parent::__construct($host, $port, $printlog, $loglevel);
$this->user = $user;
$this->password = $password;
$this->resource = $resource;
if(!$server) $server = $host;
$this->basejid = $this->user . '@' . $this->host;
$this->stream_start = '<stream:stream to="' . $server . '" xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" version="1.0">';
$this->stream_end = '</stream:stream>';
$this->default_ns = 'jabber:client';
$this->addHandler('features', 'http://etherx.jabber.org/streams', 'features_handler');
$this->addHandler('success', 'urn:ietf:params:xml:ns:xmpp-sasl', 'sasl_success_handler');
$this->addHandler('failure', 'urn:ietf:params:xml:ns:xmpp-sasl', 'sasl_failure_handler');
$this->addHandler('proceed', 'urn:ietf:params:xml:ns:xmpp-tls', 'tls_proceed_handler');
$this->addHandler('message', 'jabber:client', 'message_handler');
$this->addHandler('presence', 'jabber:client', 'presence_handler');
}
/**
* Turn encryption on/ff
*
* @param boolean $useEncryption
*/
public function useEncryption($useEncryption = true) {
$this->use_encryption = $useEncryption;
}
/**
* Turn on auto-authorization of subscription requests.
*
* @param boolean $autoSubscribe
*/
public function autoSubscribe($autoSubscribe = true) {
$this->auto_subscribe = $autoSubscribe;
}
/**
* Send XMPP Message
*
* @param string $to
* @param string $body
* @param string $type
* @param string $subject
*/
public function message($to, $body, $type = 'chat', $subject = null, $payload = null) {
$to = htmlspecialchars($to);
$body = htmlspecialchars($body);
$subject = htmlspecialchars($subject);
$out = "<message from='{$this->fulljid}' to='$to' type='$type'>";
if($subject) $out .= "<subject>$subject</subject>";
$out .= "<body>$body</body>";
if($payload) $out .= $payload;
$out .= "</message>";
$this->send($out);
}
/**
* Set Presence
*
* @param string $status
* @param string $show
* @param string $to
*/
public function presence($status = null, $show = 'available', $to = null, $type='available') {
if($type == 'available') $type = '';
$to = htmlspecialchars($to);
$status = htmlspecialchars($status);
if($show == 'unavailable') $type = 'unavailable';
$out = "<presence";
if($to) $out .= " to='$to'";
if($type) $out .= " type='$type'";
if($show == 'available' and !$status) {
$out .= "/>";
} else {
$out .= ">";
if($show != 'available') $out .= "<show>$show</show>";
if($status) $out .= "<status>$status</status>";
$out .= "</presence>";
}
$this->send($out);
}
/**
* Message handler
*
* @param string $xml
*/
public function message_handler($xml) {
if(isset($xml->attrs['type'])) {
$payload['type'] = $xml->attrs['type'];
} else {
$payload['type'] = 'chat';
}
$payload['from'] = $xml->attrs['from'];
$payload['body'] = $xml->sub('body')->data;
$this->log->log("Message: {$xml->sub('body')->data}", XMPPHP_Log::LEVEL_DEBUG);
$this->event('message', $payload);
}
/**
* Presence handler
*
* @param string $xml
*/
public function presence_handler($xml) {
$payload['type'] = (isset($xml->attrs['type'])) ? $xml->attrs['type'] : 'available';
$payload['show'] = (isset($xml->sub('show')->data)) ? $xml->sub('show')->data : $payload['type'];
$payload['from'] = $xml->attrs['from'];
$payload['status'] = (isset($xml->sub('status')->data)) ? $xml->sub('status')->data : '';
$this->log->log("Presence: {$payload['from']} [{$payload['show']}] {$payload['status']}", XMPPHP_Log::LEVEL_DEBUG);
if(array_key_exists('type', $xml->attrs) and $xml->attrs['type'] == 'subscribe') {
if($this->auto_subscribe) $this->send("<presence type='subscribed' to='{$xml->attrs['from']}' from='{$this->fulljid}' /><presence type='subscribe' to='{$xml->attrs['from']}' from='{$this->fulljid}' />");
$this->event('subscription_requested', $payload);
} elseif(array_key_exists('type', $xml->attrs) and $xml->attrs['type'] == 'subscribed') {
$this->event('subscription_accepted', $payload);
} else {
$this->event('presence', $payload);
}
}
/**
* Features handler
*
* @param string $xml
*/
protected function features_handler($xml) {
if($xml->hasSub('starttls') and $this->use_encryption) {
$this->send("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'><required /></starttls>");
} elseif($xml->hasSub('bind')) {
$id = $this->getId();
$this->addIdHandler($id, 'resource_bind_handler');
$this->send("<iq xmlns=\"jabber:client\" type=\"set\" id=\"$id\"><bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\"><resource>{$this->resource}</resource></bind></iq>");
} else {
$this->log->log("Attempting Auth...");
$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>" . base64_encode("\x00" . $this->user . "\x00" . $this->password) . "</auth>");
}
}
/**
* SASL success handler
*
* @param string $xml
*/
protected function sasl_success_handler($xml) {
$this->log->log("Auth success!");
$this->authed = true;
$this->reset();
}
/**
* SASL feature handler
*
* @param string $xml
*/
protected function sasl_failure_handler($xml) {
$this->log->log("Auth failed!", XMPPHP_Log::LEVEL_ERROR);
$this->disconnect();
throw new XMPPHP_Exception('Auth failed!');
}
/**
* Resource bind handler
*
* @param string $xml
*/
protected function resource_bind_handler($xml) {
if($xml->attrs['type'] == 'result') {
$this->log->log("Bound to " . $xml->sub('bind')->sub('jid')->data);
$this->fulljid = $xml->sub('bind')->sub('jid')->data;
}
$id = $this->getId();
$this->addIdHandler($id, 'session_start_handler');
$this->send("<iq xmlns='jabber:client' type='set' id='$id'><session xmlns='urn:ietf:params:xml:ns:xmpp-session' /></iq>");
}
/**
* Retrieves the roster
*
*/
public function getRoster() {
$id = $this->getID();
$this->addIdHandler($id, 'roster_get_handler');
$this->send("<iq xmlns='jabber:client' type='get' id='$id'><query xmlns='jabber:iq:roster' /></iq>");
}
/**
* Roster retrieval handler
*
* @param string $xml
*/
protected function roster_get_handler($xml) {
// TODO: make this work
}
/**
* Session start handler
*
* @param string $xml
*/
protected function session_start_handler($xml) {
$this->log->log("Session started");
$this->event('session_start');
}
/**
* TLS proceed handler
*
* @param string $xml
*/
protected function tls_proceed_handler($xml) {
$this->log->log("Starting TLS encryption");
stream_socket_enable_crypto($this->socket, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);
$this->reset();
}
}