111 lines
4.0 KiB
PHP
111 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.postgresql.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'])) tracker_error('invalid ip, dotted decimal only');
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}
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// set ip to connected client
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elseif (isset($_SERVER['REMOTE_ADDR'])) $_GET['ip'] = trim($_SERVER['REMOTE_ADDR'],'::ffff:');
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// cannot locate suitable ip, must abort
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else tracker_error('could not locate clients ip');
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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'] = pg_escape_bytea(peertracker::$db, $_GET['info_hash']);
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$_GET['peer_id'] = pg_escape_bytea(peertracker::$db, $_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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