<?php
/**
* Jaxl (Jabber XMPP Library)
*
* Copyright (c) 2009-2010, Abhinav Singh <hide@address.com>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Abhinav Singh nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRIC
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @package jaxl
* @subpackage xep
* @author Abhinav Singh <hide@address.com>
* @copyright Abhinav Singh
* @link http://code.google.com/p/jaxl
*/
/**
* XEP-0065: SOCKS5 Bytestreams
*/
class JAXL0065 {
public static $id = array();
public static $ns = 'http://jabber.org/protocol/bytestreams';
public static function init($jaxl) {
jaxl_require('JAXLS5B'); // SOCKS5
$jaxl->features[] = self::$ns;
JAXLXml::addTag('iq', 'streamSid', '//iq/query/@sid');
JAXLXml::addTag('iq', 'streamMode', '//iq/query/@mode');
JAXLXml::addTag('iq', 'streamHost', '//iq/query/streamhost/@host');
JAXLXml::addTag('iq', 'streamPort', '//iq/query/streamhost/@port');
JAXLXml::addTag('iq', 'streamJid', '//iq/query/streamhost/@jid');
JAXLXml::addTag('iq', 'streamHostUsed', '//iq/query/streamhost-used/@jid');
$jaxl->addPlugin('jaxl_get_iq_set', array('JAXL0065', 'getStreamHost'));
}
/**
* Method listens for incoming iq set packets. If incoming packet matches namespace:
* a) Establishes S5B with one of the stream host
* b) Notify requestor about user stream host
* c) Read S5B socket for data
*/
public static function getStreamHost($payload, $jaxl) {
if($payload['queryXmlns'] == self::$ns) {
if(!is_array($payload['streamHost'])) $payload['streamHost'] = array($payload['streamHost']);
if(!is_array($payload['streamPort'])) $payload['streamPort'] = array($payload['streamPort']);
if(!is_array($payload['streamJid'])) $payload['streamJid'] = array($payload['streamJid']);
foreach($payload['streamHost'] as $key => $streamHost) {
$s5b = new JAXLS5B($streamHost, $payload['streamPort'][$key], $jaxl);
$s5b->connect($payload['streamSid'], $payload['from'], $payload['to'], $jaxl);
if($s5b->connected) {
// connected to proxy, use this streamHost
self::notifyRequestor($payload, $jaxl);
// read socket data
$jaxl->log("[[JAXL0065]] Using stream host $streamHost");
while($buffer = $s5b->read()) {
$jaxl->log("[[JAXL0065]] Reading 1024 bytes of data via proxy");
file_put_contents($jaxl->tmpPath.'/'.$payload['streamSid'], $buffer, FILE_APPEND);
}
unset($s5b);
$jaxl->executePlugin('jaxl_post_file_request', array('tmp'=>$jaxl->tmpPath.'/'.$payload['streamSid']));
break;
}
}
}
return $payload;
}
public static function notifyRequestor($payload, $jaxl) {
$xml = '<query xmlns="'.self::$ns.'" sid="'.$payload['streamSid'].'">';
$xml .= '<streamhost-used jid="'.$payload['streamJid'][0].'"/>';
$xml .= '</query>';
return XMPPSend::iq($jaxl, 'result', $xml, $payload['from'], $jaxl->jid, false, $payload['id']);
}
public static function sendFile($jaxl, $payload) {
$xml = '<query xmlns="'.self::$ns.'" sid="'.$payload['siId'].'">';
$xml .= '<streamhost host="127.0.1.1" jid="proxy.dev.jaxl.im" port="7777"/>';
$xml .= '</query>';
$id = XMPPSend::iq($jaxl, 'set', $xml, $payload['to'], $jaxl->jid, array('JAXL0065', 'establishS5B'));
self::$id[$id] = $payload;
return $id;
}
public static function establishS5B($payload, $jaxl) {
if(!isset(self::$id[$payload['id']]))
return $payload;
// establish S5B connection
$s5b = new JAXLS5B('127.0.1.1', 7777, $jaxl);
$s5b->connect($payload['streamSid'], $payload['to'], $payload['from'], $jaxl);
if($s5b->connected) {
// activate bytestream
$id = self::activateS5B('proxy.dev.jaxl.im', $payload['streamSid'], $payload['from'], $jaxl);
self::$id[$id] = self::$id[$payload['id']];
self::$id[$id]['s5b'] = &$s5b;
}
unset($s5b);
unset(self::$id[$payload['id']]);
return $payload;
}
public static function activateS5B($streamHost, $sid, $tJid, $jaxl) {
$xml = '<query xmlns="'.self::$ns.'" sid="'.$sid.'">';
$xml .= '<activate>'.$tJid.'</activate>';
$xml .= '</query>';
return XMPPSend::iq($jaxl, 'set', $xml, $streamHost, false, array('JAXL0065', 'transferFile'));
}
public static function transferFile($payload, $jaxl) {
// send data via proxy
$fh = fopen(self::$id[$payload['id']]['file'], 'r');
while($data = fread($fh, 1024)) {
$jaxl->log("[[JAXL0065]] Sending 1024 bytes of data via proxy");
self::$id[$payload['id']]['s5b']->write($data);
}
$jaxl->executePlugin('jaxl_post_file_transfer', null);
unset(self::$id[$payload['id']]);
}
}
?>