2a075aa4c8
We can't handle ipv6 addresses, so we ignore them if given as parameter. We use the IP of the remote given with the connection. That is either ipv4, when listening on ipv4 or it is not and we fail later.
121 lines
4.0 KiB
PHP
121 lines
4.0 KiB
PHP
<?php
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// License Information /////////////////////////////////////////////////////////////////////////////
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/*
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* PeerTracker - OpenSource BitTorrent Tracker
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* Revision - $Id: announce.php 161 2010-01-20 17:49:50Z trigunflame $
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* Copyright (C) 2009 PeerTracker Team
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*
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* PeerTracker 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 3 of the License, or
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* (at your option) any later version.
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*
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* PeerTracker 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 PeerTracker. If not, see <http://www.gnu.org/licenses/>.
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*/
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// Enviroment Runtime //////////////////////////////////////////////////////////////////////////////
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// error level
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error_reporting(E_ERROR | E_PARSE);
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//error_reporting(E_ALL & ~E_WARNING);
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//error_reporting(E_ALL | E_STRICT | E_DEPRECATED);
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// ignore disconnects
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ignore_user_abort(true);
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// load tracker core
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require './tracker.mysql.php';
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// Verify Request //////////////////////////////////////////////////////////////////////////////////
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// strip auto-escaped data
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if (get_magic_quotes_gpc())
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{
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$_GET['info_hash'] = stripslashes($_GET['info_hash']);
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$_GET['peer_id'] = stripslashes($_GET['peer_id']);
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}
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// 20-bytes - info_hash
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// sha-1 hash of torrent metainfo
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if (!isset($_GET['info_hash']) || strlen($_GET['info_hash']) != 20) exit;
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// 20-bytes - peer_id
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// client generated unique peer identifier
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if (!isset($_GET['peer_id']) || strlen($_GET['peer_id']) != 20) exit;
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// integer - port
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// port the client is accepting connections from
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if (!(isset($_GET['port']) && is_numeric($_GET['port']))) tracker_error('client listening port is invalid');
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// integer - left
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// number of bytes left for the peer to download
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if (isset($_GET['left']) && is_numeric($_GET['left'])) $_SERVER['tracker']['seeding'] = ($_GET['left'] > 0 ? 0 : 1); else tracker_error('client data left field is invalid');
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// integer boolean - compact - optional
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// send a compact peer response
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// http://bittorrent.org/beps/bep_0023.html
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if (!isset($_GET['compact']) || $_SERVER['tracker']['force_compact']) $_GET['compact'] = 1; else $_GET['compact'] += 0;
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// integer boolean - no_peer_id - optional
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// omit peer_id in dictionary announce response
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if (!isset($_GET['no_peer_id'])) $_GET['no_peer_id'] = 0; else $_GET['no_peer_id'] += 0;
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// string - ip - optional
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// ip address the peer requested to use
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if (isset($_GET['ip']) && $_SERVER['tracker']['external_ip'])
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{
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// dotted decimal only
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$_GET['ip'] = trim($_GET['ip'],'::ffff:');
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if (!ip2long($_GET['ip'])) {
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unset($_GET['ip']);
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//tracker_error('invalid ip, dotted decimal only');
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}
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}
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if (!isset($_GET['ip']))
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{
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// set ip to connected client
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if (isset($_SERVER['REMOTE_ADDR'])) {
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$_GET['ip'] = trim($_SERVER['REMOTE_ADDR'],'::ffff:');
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} else {
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// cannot locate suitable ip, must abort
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tracker_error('could not locate clients ip');
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}
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}
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// integer - numwant - optional
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// number of peers that the client has requested
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if (!isset($_GET['numwant'])) $_GET['numwant'] = $_SERVER['tracker']['default_peers'];
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elseif (($_GET['numwant']+0) > $_SERVER['tracker']['max_peers']) $_GET['numwant'] = $_SERVER['tracker']['max_peers'];
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else $_GET['numwant'] += 0;
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// Handle Request //////////////////////////////////////////////////////////////////////////////////
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// open database
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peertracker::open();
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// make info_hash & peer_id SQL friendly
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$_GET['info_hash'] = peertracker::$api->escape_sql($_GET['info_hash']);
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$_GET['peer_id'] = peertracker::$api->escape_sql($_GET['peer_id']);
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// announce peers
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peertracker::peers();
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// track client
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peertracker::event();
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// garbage collection
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peertracker::clean();
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// close database
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peertracker::close();
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?>
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