forked from GNUsocial/gnu-social
686 lines
16 KiB
PHP
686 lines
16 KiB
PHP
<?php
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/**
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* XMPPHP: The PHP XMPP Library
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* Copyright (C) 2008 Nathanael C. Fritz
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* This file is part of SleekXMPP.
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*
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* XMPPHP is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* XMPPHP is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with XMPPHP; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* @category xmpphp
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* @package XMPPHP
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* @author Nathanael C. Fritz <JID: fritzy@netflint.net>
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* @author Stephan Wentz <JID: stephan@jabber.wentz.it>
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* @copyright 2008 Nathanael C. Fritz
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*/
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/** XMPPHP_Exception */
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require_once 'Exception.php';
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/** XMPPHP_XMLObj */
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require_once 'XMLObj.php';
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/** XMPPHP_Log */
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require_once 'Log.php';
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/**
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* XMPPHP XML Stream
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*
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* @category xmpphp
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* @package XMPPHP
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* @author Nathanael C. Fritz <JID: fritzy@netflint.net>
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* @author Stephan Wentz <JID: stephan@jabber.wentz.it>
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* @copyright 2008 Nathanael C. Fritz
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* @version $Id$
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*/
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class XMPPHP_XMLStream {
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/**
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* @var resource
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*/
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protected $socket;
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/**
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* @var resource
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*/
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protected $parser;
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/**
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* @var string
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*/
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protected $buffer;
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/**
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* @var integer
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*/
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protected $xml_depth = 0;
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/**
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* @var string
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*/
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protected $host;
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/**
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* @var integer
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*/
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protected $port;
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/**
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* @var string
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*/
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protected $stream_start = '<stream>';
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/**
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* @var string
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*/
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protected $stream_end = '</stream>';
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/**
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* @var boolean
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*/
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protected $disconnected = false;
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/**
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* @var boolean
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*/
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protected $sent_disconnect = false;
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/**
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* @var array
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*/
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protected $ns_map = array();
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/**
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* @var array
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*/
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protected $current_ns = array();
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/**
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* @var array
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*/
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protected $xmlobj = null;
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/**
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* @var array
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*/
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protected $nshandlers = array();
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/**
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* @var array
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*/
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protected $idhandlers = array();
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/**
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* @var array
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*/
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protected $eventhandlers = array();
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/**
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* @var integer
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*/
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protected $lastid = 0;
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/**
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* @var string
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*/
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protected $default_ns;
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/**
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* @var string
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*/
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protected $until = '';
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/**
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* @var array
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*/
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protected $until_happened = false;
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/**
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* @var array
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*/
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protected $until_payload = array();
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/**
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* @var XMPPHP_Log
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*/
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protected $log;
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/**
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* @var boolean
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*/
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protected $reconnect = true;
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/**
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* @var boolean
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*/
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protected $been_reset = false;
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/**
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* @var boolean
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*/
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protected $is_server;
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/**
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* @var float
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*/
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protected $last_send = 0;
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/**
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* @var boolean
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*/
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protected $use_ssl = false;
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/**
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* Constructor
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*
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* @param string $host
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* @param string $port
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* @param boolean $printlog
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* @param string $loglevel
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* @param boolean $is_server
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*/
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public function __construct($host = null, $port = null, $printlog = false, $loglevel = null, $is_server = false) {
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$this->reconnect = !$is_server;
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$this->is_server = $is_server;
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$this->host = $host;
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$this->port = $port;
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$this->setupParser();
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$this->log = new XMPPHP_Log($printlog, $loglevel);
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}
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/**
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* Destructor
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* Cleanup connection
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*/
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public function __destruct() {
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if(!$this->disconnected && $this->socket) {
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$this->disconnect();
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}
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}
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/**
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* Return the log instance
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*
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* @return XMPPHP_Log
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*/
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public function getLog() {
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return $this->log;
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}
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/**
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* Get next ID
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*
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* @return integer
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*/
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public function getId() {
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$this->lastid++;
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return $this->lastid;
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}
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/**
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* Set SSL
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*
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* @return integer
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*/
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public function useSSL($use=true) {
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$this->use_ssl = $use;
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}
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/**
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* Add ID Handler
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*
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* @param integer $id
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* @param string $pointer
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* @param string $obj
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*/
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public function addIdHandler($id, $pointer, $obj = null) {
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$this->idhandlers[$id] = array($pointer, $obj);
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}
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/**
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* Add Handler
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*
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* @param integer $id
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* @param string $ns
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* @param string $pointer
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* @param string $obj
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* @param integer $depth
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*/
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public function addHandler($name, $ns, $pointer, $obj = null, $depth = 1) {
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$this->nshandlers[] = array($name,$ns,$pointer,$obj, $depth);
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}
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/**
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* Add Evemt Handler
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*
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* @param integer $id
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* @param string $pointer
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* @param string $obj
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*/
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public function addEventHandler($name, $pointer, $obj) {
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$this->eventhandlers[] = array($name, $pointer, $obj);
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}
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/**
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* Connect to XMPP Host
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*
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* @param integer $timeout
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* @param boolean $persistent
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* @param boolean $sendinit
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*/
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public function connect($timeout = 30, $persistent = false, $sendinit = true) {
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$starttime = time();
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do {
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$this->disconnected = false;
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$this->sent_disconnect = false;
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if($persistent) {
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$conflag = STREAM_CLIENT_CONNECT | STREAM_CLIENT_PERSISTENT;
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} else {
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$conflag = STREAM_CLIENT_CONNECT;
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}
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$conntype = 'tcp';
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if($this->use_ssl) $conntype = 'ssl';
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$this->log->log("Connecting to $conntype://{$this->host}:{$this->port}");
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try {
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$this->socket = @stream_socket_client("$conntype://{$this->host}:{$this->port}", $errno, $errstr, $timeout, $conflag);
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} catch (Exception $e) {
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throw new XMPPHP_Exception($e->getMessage());
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}
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if(!$this->socket) {
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$this->log->log("Could not connect.", XMPPHP_Log::LEVEL_ERROR);
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$this->disconnected = true;
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}
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} while (!$this->socket && (time() - $starttime) < $timeout);
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if ($this->socket) {
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stream_set_blocking($this->socket, 1);
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if($sendinit) $this->send($this->stream_start);
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} else {
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throw new XMPPHP_Exception("Could not connect before timeout.");
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}
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}
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/**
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* Reconnect XMPP Host
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*/
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public function doReconnect() {
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if(!$this->is_server) {
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$this->log->log("Reconnecting...", XMPPHP_Log::LEVEL_WARNING);
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$this->connect(30, false, false);
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$this->reset();
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$this->event('reconnect');
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}
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}
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/**
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* Disconnect from XMPP Host
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*/
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public function disconnect() {
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$this->log->log("Disconnecting...", XMPPHP_Log::LEVEL_VERBOSE);
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$this->reconnect = false;
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$this->send($this->stream_end);
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$this->sent_disconnect = true;
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$this->processUntil('end_stream', 5);
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$this->disconnected = true;
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}
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/**
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* Are we are disconnected?
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*
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* @return boolean
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*/
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public function isDisconnected() {
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return $this->disconnected;
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}
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/**
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* Core reading tool
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* 0 -> only read if data is immediately ready
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* NULL -> wait forever and ever
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* integer -> process for this amount of time
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*/
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private function __process($maximum=0) {
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$remaining = $maximum;
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do {
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$starttime = (microtime(true) * 1000000);
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$read = array($this->socket);
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$write = array();
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$except = array();
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if (is_null($maximum)) {
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$secs = NULL;
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$usecs = NULL;
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} else if ($maximum == 0) {
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$secs = 0;
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$usecs = 0;
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} else {
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$usecs = $remaining % 1000000;
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$secs = floor(($remaining - $usecs) / 1000000);
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}
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$updated = @stream_select($read, $write, $except, $secs, $usecs);
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if ($updated === false) {
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$this->log->log("Error on stream_select()", XMPPHP_Log::LEVEL_VERBOSE);
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if ($this->reconnect) {
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$this->doReconnect();
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} else {
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fclose($this->socket);
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$this->socket = NULL;
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return false;
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}
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} else if ($updated > 0) {
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# XXX: Is this big enough?
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$buff = @fread($this->socket, 4096);
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if(!$buff) {
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if($this->reconnect) {
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$this->doReconnect();
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} else {
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fclose($this->socket);
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$this->socket = NULL;
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return false;
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}
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}
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$this->log->log("RECV: $buff", XMPPHP_Log::LEVEL_VERBOSE);
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xml_parse($this->parser, $buff, false);
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} else {
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# $updated == 0 means no changes during timeout.
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}
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$endtime = (microtime(true)*1000000);
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$time_past = $endtime - $starttime;
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$remaining = $remaining - $time_past;
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} while (is_null($maximum) || $remaining > 0);
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return true;
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}
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/**
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* Process
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*
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* @return string
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*/
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public function process() {
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$this->__process(NULL);
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}
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/**
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* Process until a timeout occurs
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*
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* @param integer $timeout
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* @return string
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*/
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public function processTime($timeout=NULL) {
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if (is_null($timeout)) {
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return $this->__process(NULL);
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} else {
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return $this->__process($timeout * 1000000);
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}
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}
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/**
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* Process until a specified event or a timeout occurs
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*
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* @param string|array $event
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* @param integer $timeout
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* @return string
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*/
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public function processUntil($event, $timeout=-1) {
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$start = time();
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if(!is_array($event)) $event = array($event);
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$this->until[] = $event;
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end($this->until);
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$event_key = key($this->until);
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reset($this->until);
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$updated = '';
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while(!$this->disconnected and $this->until[$event_key] and (time() - $start < $timeout or $timeout == -1)) {
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$this->__process(0);
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}
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if(array_key_exists($event_key, $this->until_payload)) {
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$payload = $this->until_payload[$event_key];
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} else {
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$payload = array();
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}
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unset($this->until_payload[$event_key]);
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return $payload;
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}
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/**
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* Obsolete?
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*/
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public function Xapply_socket($socket) {
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$this->socket = $socket;
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}
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/**
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* XML start callback
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*
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* @see xml_set_element_handler
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*
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* @param resource $parser
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* @param string $name
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*/
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public function startXML($parser, $name, $attr) {
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if($this->been_reset) {
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$this->been_reset = false;
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$this->xml_depth = 0;
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}
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$this->xml_depth++;
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if(array_key_exists('XMLNS', $attr)) {
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$this->current_ns[$this->xml_depth] = $attr['XMLNS'];
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} else {
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$this->current_ns[$this->xml_depth] = $this->current_ns[$this->xml_depth - 1];
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if(!$this->current_ns[$this->xml_depth]) $this->current_ns[$this->xml_depth] = $this->default_ns;
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}
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$ns = $this->current_ns[$this->xml_depth];
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foreach($attr as $key => $value) {
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if(strstr($key, ":")) {
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$key = explode(':', $key);
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$key = $key[1];
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$this->ns_map[$key] = $value;
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}
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}
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if(!strstr($name, ":") === false)
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{
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$name = explode(':', $name);
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$ns = $this->ns_map[$name[0]];
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$name = $name[1];
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}
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$obj = new XMPPHP_XMLObj($name, $ns, $attr);
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if($this->xml_depth > 1) {
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$this->xmlobj[$this->xml_depth - 1]->subs[] = $obj;
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}
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$this->xmlobj[$this->xml_depth] = $obj;
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}
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/**
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* XML end callback
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*
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* @see xml_set_element_handler
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*
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* @param resource $parser
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* @param string $name
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*/
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public function endXML($parser, $name) {
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#$this->log->log("Ending $name", XMPPHP_Log::LEVEL_DEBUG);
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#print "$name\n";
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if($this->been_reset) {
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$this->been_reset = false;
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$this->xml_depth = 0;
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}
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$this->xml_depth--;
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if($this->xml_depth == 1) {
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#clean-up old objects
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$found = false;
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foreach($this->nshandlers as $handler) {
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if($handler[4] != 1 and $this->xmlobj[2]->hasSub($handler[0])) {
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$searchxml = $this->xmlobj[2]->sub($handler[0]);
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} elseif(is_array($this->xmlobj) and array_key_exists(2, $this->xmlobj)) {
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$searchxml = $this->xmlobj[2];
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}
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if($searchxml !== null and $searchxml->name == $handler[0] and ($searchxml->ns == $handler[1] or (!$handler[1] and $searchxml->ns == $this->default_ns))) {
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if($handler[3] === null) $handler[3] = $this;
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$this->log->log("Calling {$handler[2]}", XMPPHP_Log::LEVEL_DEBUG);
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$handler[3]->$handler[2]($this->xmlobj[2]);
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}
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}
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foreach($this->idhandlers as $id => $handler) {
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if(array_key_exists('id', $this->xmlobj[2]->attrs) and $this->xmlobj[2]->attrs['id'] == $id) {
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if($handler[1] === null) $handler[1] = $this;
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$handler[1]->$handler[0]($this->xmlobj[2]);
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#id handlers are only used once
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unset($this->idhandlers[$id]);
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break;
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}
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}
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if(is_array($this->xmlobj)) {
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$this->xmlobj = array_slice($this->xmlobj, 0, 1);
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if(isset($this->xmlobj[0]) && $this->xmlobj[0] instanceof XMPPHP_XMLObj) {
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$this->xmlobj[0]->subs = null;
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}
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}
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unset($this->xmlobj[2]);
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}
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if($this->xml_depth == 0 and !$this->been_reset) {
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if(!$this->disconnected) {
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if(!$this->sent_disconnect) {
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$this->send($this->stream_end);
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}
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$this->disconnected = true;
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$this->sent_disconnect = true;
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fclose($this->socket);
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if($this->reconnect) {
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$this->doReconnect();
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}
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}
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$this->event('end_stream');
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}
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}
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/**
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* XML character callback
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* @see xml_set_character_data_handler
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*
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* @param resource $parser
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* @param string $data
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*/
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public function charXML($parser, $data) {
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if(array_key_exists($this->xml_depth, $this->xmlobj)) {
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$this->xmlobj[$this->xml_depth]->data .= $data;
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}
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}
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/**
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* Event?
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*
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* @param string $name
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* @param string $payload
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*/
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public function event($name, $payload = null) {
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$this->log->log("EVENT: $name", XMPPHP_Log::LEVEL_DEBUG);
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foreach($this->eventhandlers as $handler) {
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if($name == $handler[0]) {
|
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if($handler[2] === null) {
|
|
$handler[2] = $this;
|
|
}
|
|
$handler[2]->$handler[1]($payload);
|
|
}
|
|
}
|
|
foreach($this->until as $key => $until) {
|
|
if(is_array($until)) {
|
|
if(in_array($name, $until)) {
|
|
$this->until_payload[$key][] = array($name, $payload);
|
|
$this->until[$key] = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Read from socket
|
|
*/
|
|
public function read() {
|
|
$buff = @fread($this->socket, 1024);
|
|
if(!$buff) {
|
|
if($this->reconnect) {
|
|
$this->doReconnect();
|
|
} else {
|
|
fclose($this->socket);
|
|
return false;
|
|
}
|
|
}
|
|
$this->log->log("RECV: $buff", XMPPHP_Log::LEVEL_VERBOSE);
|
|
xml_parse($this->parser, $buff, false);
|
|
}
|
|
|
|
/**
|
|
* Send to socket
|
|
*
|
|
* @param string $msg
|
|
*/
|
|
public function send($msg, $timeout=NULL) {
|
|
|
|
if (is_null($timeout)) {
|
|
$secs = NULL;
|
|
$usecs = NULL;
|
|
} else if ($timeout == 0) {
|
|
$secs = 0;
|
|
$usecs = 0;
|
|
} else {
|
|
$maximum = $timeout * 1000000;
|
|
$usecs = $maximum % 1000000;
|
|
$secs = floor(($maximum - $usecs) / 1000000);
|
|
}
|
|
|
|
$read = array();
|
|
$write = array($this->socket);
|
|
$except = array();
|
|
|
|
$select = @stream_select($read, $write, $except, $secs, $usecs);
|
|
|
|
if($select === False) {
|
|
$this->log->log("ERROR sending message; reconnecting.");
|
|
$this->doReconnect();
|
|
# TODO: retry send here
|
|
return false;
|
|
} elseif ($select > 0) {
|
|
$this->log->log("Socket is ready; send it.");
|
|
} else {
|
|
$this->log->log("Socket is not ready; break.");
|
|
return false;
|
|
}
|
|
|
|
$sentbytes = @fwrite($this->socket, $msg);
|
|
$this->log->log("SENT: " . mb_substr($msg, 0, $sentbytes, '8bit'), XMPPHP_Log::LEVEL_VERBOSE);
|
|
if($sentbytes === FALSE) {
|
|
$this->log->log("ERROR sending message; reconnecting.");
|
|
$this->doReconnect();
|
|
return false;
|
|
}
|
|
$this->log->log("Successfully sent $sentbytes bytes.");
|
|
return $sentbytes;
|
|
}
|
|
|
|
public function time() {
|
|
list($usec, $sec) = explode(" ", microtime());
|
|
return (float)$sec + (float)$usec;
|
|
}
|
|
|
|
/**
|
|
* Reset connection
|
|
*/
|
|
public function reset() {
|
|
$this->xml_depth = 0;
|
|
unset($this->xmlobj);
|
|
$this->xmlobj = array();
|
|
$this->setupParser();
|
|
if(!$this->is_server) {
|
|
$this->send($this->stream_start);
|
|
}
|
|
$this->been_reset = true;
|
|
}
|
|
|
|
/**
|
|
* Setup the XML parser
|
|
*/
|
|
public function setupParser() {
|
|
$this->parser = xml_parser_create('UTF-8');
|
|
xml_parser_set_option($this->parser, XML_OPTION_SKIP_WHITE, 1);
|
|
xml_parser_set_option($this->parser, XML_OPTION_TARGET_ENCODING, 'UTF-8');
|
|
xml_set_object($this->parser, $this);
|
|
xml_set_element_handler($this->parser, 'startXML', 'endXML');
|
|
xml_set_character_data_handler($this->parser, 'charXML');
|
|
}
|
|
|
|
public function readyToProcess() {
|
|
$read = array($this->socket);
|
|
$write = array();
|
|
$except = array();
|
|
$updated = @stream_select($read, $write, $except, 0);
|
|
return (($updated !== false) && ($updated > 0));
|
|
}
|
|
}
|