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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)
+	 * @copyright  2008 Nathanael C. Fritz
+	 */
+/**
+ * XMPPHP Main Class
+ *
+ * @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>
+ * @copyright  2008 Nathanael C. Fritz
+ * @version    $Id$
+ */
+class XMPP extends XMLStream {
+	/**
+	 * @var string
+	 */
+	public $server;
+	/**
+	 * @var string
+	 */
+	public $user;
+	
+	/**
+	 * @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;
+	
+	/**
+	 * @var boolean
+	 */
+	public $track_presence = true;
+	
+	/**
+	 * @var object
+	 */
+	public $roster;
+	/**
+	 * 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->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 $subject
+	 */
+	public function message($to, $body, $type = 'chat', $subject = null, $payload = null) {
+		if ($this->disconnected) {
+			throw new XMPPException('You need to connect first');
+		}
+	    if(empty($type)) {
+	        $type = 'chat';
+	    }
+		$to	  = htmlspecialchars($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', $priority=null) {
+		if ($this->disconnected) {
+			throw new XMPPException('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']}", XMPPLog::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']}",  XMPPLog::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);
+		}
+	}
+	/**
+	 * 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 $xml
+	 */
+	protected function sasl_failure_handler($xml) {
+		$this->log->log("Auth failed!",  XMPPLog::LEVEL_ERROR);
+		$this->disconnect();
+		
+		throw new XMPPException('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>");
+	}
+	/**
+	* 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>");
+	}
+	/**
+	* 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);
+		$this->reset();
+	}
+	/**
+	* Retrieves the vcard
+	*
+	*/
+	public function getVCard($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>");
+		}
+	}
+	/**
+	* VCard retrieval handler
+	*
+	* @param XML Object $xml
+	*/
+	protected function vcard_get_handler($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);
+	}
+}