gnu-social/plugins/Xmpp/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>
* @author Michael Garvin <JID: gar@netflint.net>
* @author Alexander Birkner (https://github.com/BirknerAlex)
* @author zorn-v (https://github.com/zorn-v/xmpphp/)
* @author GNU social
* @copyright 2008 Nathanael C. Fritz
*/
namespace XMPPHP;
/** XMPPHP_XMLStream */
require_once __DIR__ . DIRECTORY_SEPARATOR . 'XMLStream.php';
require_once __DIR__ . DIRECTORY_SEPARATOR . 'Roster.php';
/**
* XMPPHP XMPP
*
* @package XMPPHP
* @author Nathanael C. Fritz <JID: fritzy@netflint.net>
* @author Stephan Wentz <JID: stephan@jabber.wentz.it>
* @author Michael Garvin <JID: gar@netflint.net>
* @copyright 2008 Nathanael C. Fritz
* @version $Id$
*/
class XMPP extends XMLStream
{
/**
* @var string
*/
public $server;
/**
* @var string
*/
public $user;
/**
* @var boolean
*/
public $track_presence = true;
/**
* @var object
*/
public $roster;
/**
* @var string
*/
protected $password;
/**
* @var string
*/
protected $resource;
/**
* @var string
*/
protected $fulljid;
/**
* @var string
*/
protected $basejid;
/**
* @var boolean
*/
protected $authed = false;
protected $session_started = 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->server = $server;
$this->basejid = $this->user . '@' . $this->host;
$this->roster = new Roster();
$this->track_presence = true;
$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->addXPathHandler('{http://etherx.jabber.org/streams}features', 'features_handler');
$this->addXPathHandler('{urn:ietf:params:xml:ns:xmpp-sasl}success', 'sasl_success_handler');
$this->addXPathHandler('{urn:ietf:params:xml:ns:xmpp-sasl}failure', 'sasl_failure_handler');
$this->addXPathHandler('{urn:ietf:params:xml:ns:xmpp-tls}proceed', 'tls_proceed_handler');
$this->addXPathHandler('{jabber:client}message', 'message_handler');
$this->addXPathHandler('{jabber:client}presence', 'presence_handler');
$this->addXPathHandler('iq/{jabber:iq:roster}query', 'roster_iq_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
* @param null $payload
* @throws Exception
*/
public function message($to, $body, $type = 'chat', $subject = null, $payload = null)
{
if ($this->disconnected) {
throw new Exception('You need to connect first');
}
if (empty($type)) {
$type = 'chat';
}
$to = htmlspecialchars($to);
$body = htmlspecialchars($body);
$subject = htmlspecialchars($subject);
$subject = ($subject) ? '<subject>' . $subject . '</subject>' : '';
$payload = ($payload) ? $payload : '';
$sprintf = '<message from="%s" to="%s" type="%s">%s<body>%s</body>%s</message>';
$output = sprintf($sprintf, $this->fulljid, $to, $type, $subject, $body, $payload);
$this->send($output);
}
/**
* Set Presence
*
* @param string $status
* @param string $show
* @param string $to
* @param string $type
* @param null $priority
* @throws Exception
*/
public function presence($status = null, $show = 'available', $to = null, $type = 'available', $priority = null)
{
if ($this->disconnected) {
throw new Exception('You need to connect first');
}
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 and $priority !== null) {
$out .= "/>";
} else {
$out .= ">";
if ($show != 'available') {
$out .= "<show>$show</show>";
}
if ($status) {
$out .= "<status>$status</status>";
}
if ($priority !== null) {
$out .= "<priority>$priority</priority>";
}
$out .= "</presence>";
}
$this->send($out);
}
/**
* Send Auth request
*
* @param string $jid
*/
public function subscribe($jid)
{
$this->send("<presence type='subscribe' to='{$jid}' from='{$this->fulljid}' />");
#$this->send("<presence type='subscribed' to='{$jid}' from='{$this->fulljid}' />");
}
/**
* Message handler
*
* @param string $xml
*/
public function message_handler($xml)
{
if (isset($xml->attrs['type'])) {
$payload['type'] = $xml->attrs['type'];
} else {
$payload['type'] = 'chat';
}
$body = $xml->sub('body');
$payload['from'] = $xml->attrs['from'];
$payload['body'] = is_object($body) ? $body->data : false; // $xml->sub('body')->data;
$payload['xml'] = $xml;
$this->log->log("Message: {$payload['body']}", 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 : '';
$payload['priority'] = (isset($xml->sub('priority')->data)) ? intval($xml->sub('priority')->data) : 0;
$payload['xml'] = $xml;
if ($this->track_presence) {
$this->roster->setPresence($payload['from'], $payload['priority'], $payload['show'], $payload['status']);
}
$this->log->log("Presence: {$payload['from']} [{$payload['show']}] {$payload['status']}", 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}' />");
$this->send("<presence type='subscribe' to='{$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);
}
}
/**
* Retrieves the roster
*
*/
public function getRoster()
{
$id = $this->getID();
$this->send("<iq xmlns='jabber:client' type='get' id='$id'><query xmlns='jabber:iq:roster' /></iq>");
}
/**
* Retrieves the vcard
* @param null $jid
*/
public function getVCard($jid = null)
{
$id = $this->getID();
$this->addIdHandler($id, 'vcard_get_handler');
if ($jid) {
$this->send("<iq type='get' id='$id' to='$jid'><vCard xmlns='vcard-temp' /></iq>");
} else {
$this->send("<iq type='get' id='$id'><vCard xmlns='vcard-temp' /></iq>");
}
}
/**
* 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') and $this->authed) {
$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 {
$this->log->log("Attempting Auth...");
if ($this->password) {
$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>" . base64_encode("\x00" . $this->user . "\x00" . $this->password) . "</auth>");
} else {
$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='ANONYMOUS'/>");
}
}
}
/**
* 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 $xml
* @throws Exception
*/
protected function sasl_failure_handler($xml)
{
$this->log->log("Auth failed!", Log::LEVEL_ERROR);
$this->disconnect();
throw new 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;
$jidarray = explode('/', $this->fulljid);
$this->jid = $jidarray[0];
}
$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>");
}
/**
* Roster iq handler
* Gets all packets matching XPath "iq/{jabber:iq:roster}query'
*
* @param string $xml
*/
protected function roster_iq_handler($xml)
{
$status = "result";
$xmlroster = $xml->sub('query');
foreach ($xmlroster->subs as $item) {
$groups = array();
if ($item->name == 'item') {
$jid = $item->attrs['jid']; //REQUIRED
$name = $item->attrs['name']; //MAY
$subscription = $item->attrs['subscription'];
foreach ($item->subs as $subitem) {
if ($subitem->name == 'group') {
$groups[] = $subitem->data;
}
}
$contacts[] = array($jid, $subscription, $name, $groups); //Store for action if no errors happen
} else {
$status = "error";
}
}
if ($status == "result") { //No errors, add contacts
foreach ($contacts as $contact) {
$this->roster->addContact($contact[0], $contact[1], $contact[2], $contact[3]);
}
}
if ($xml->attrs['type'] == 'set') {
$this->send("<iq type=\"reply\" id=\"{$xml->attrs['id']}\" to=\"{$xml->attrs['from']}\" />");
}
}
/**
* Session start handler
*
* @param string $xml
*/
protected function session_start_handler($xml)
{
$this->log->log("Session started");
$this->session_started = true;
$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();
}
/**
* VCard retrieval handler
*
* @param XMLObj $xml
*/
protected function vcard_get_handler($xml)
{
$vcard_array = array();
$vcard = $xml->sub('vcard');
// go through all of the sub elements and add them to the vcard array
foreach ($vcard->subs as $sub) {
if ($sub->subs) {
$vcard_array[$sub->name] = array();
foreach ($sub->subs as $sub_child) {
$vcard_array[$sub->name][$sub_child->name] = $sub_child->data;
}
} else {
$vcard_array[$sub->name] = $sub->data;
}
}
$vcard_array['from'] = $xml->attrs['from'];
$this->event('vcard', $vcard_array);
}
}