mirror of
https://github.com/torrentpier/torrentpier.git
synced 2024-11-20 20:40:32 -08:00
106 lines
3.6 KiB
PHP
106 lines
3.6 KiB
PHP
<?php
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/**
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* TorrentPier – Bull-powered BitTorrent tracker engine
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*
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* @copyright Copyright (c) 2005-2024 TorrentPier (https://torrentpier.com)
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* @link https://github.com/torrentpier/torrentpier for the canonical source repository
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* @license https://github.com/torrentpier/torrentpier/blob/master/LICENSE MIT License
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*/
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define('IN_TRACKER', true);
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define('BB_ROOT', './../');
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require dirname(__DIR__) . '/common.php';
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global $bb_cfg;
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if (!$bb_cfg['tracker']['scrape']) {
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msg_die('Please disable SCRAPE!');
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}
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// Recover info_hash
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if (isset($_GET['?info_hash']) && !isset($_GET['info_hash'])) {
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$_GET['info_hash'] = $_GET['?info_hash'];
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}
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$info_hash = isset($_GET['info_hash']) ? (string)$_GET['info_hash'] : null;
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// Verify info_hash
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if (!isset($info_hash)) {
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msg_die('info_hash was not provided');
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}
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// Store info hash in hex format
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$info_hash_hex = bin2hex($info_hash);
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// Check info_hash length
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if (strlen($info_hash) !== 20) {
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msg_die('Invalid info_hash: ' . (mb_check_encoding($info_hash, 'UTF8') ? $info_hash : $info_hash_hex));
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}
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// Handle multiple hashes
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preg_match_all('/info_hash=([^&]*)/i', $_SERVER['QUERY_STRING'], $info_hash_array);
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$torrents = [];
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$info_hashes = [];
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foreach ($info_hash_array[1] as $hash) {
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$decoded_hash = urldecode($hash);
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if (strlen($decoded_hash) !== 20) {
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continue;
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}
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if ($scrape_cache = CACHE('tr_cache')->get(SCRAPE_LIST_PREFIX . bin2hex($decoded_hash))) {
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$torrents['files'][$info_key = array_key_first($scrape_cache)] = $scrape_cache[$info_key];
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} else {
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$info_hashes[] = DB()->escape(($decoded_hash));
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}
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}
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$info_hash_count = count($info_hashes);
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if (!empty($info_hash_count)) {
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if ($info_hash_count > $bb_cfg['max_scrapes']) {
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$info_hashes = array_slice($info_hashes, 0, $bb_cfg['max_scrapes']);
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}
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$info_hashes_sql = implode('\', \'', $info_hashes);
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/**
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* Currently torrent clients send truncated v2 hashes (the design raises questions).
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* https://github.com/bittorrent/bittorrent.org/issues/145#issuecomment-1720040343
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*/
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$info_hash_where = "tor.info_hash IN ('$info_hashes_sql') OR SUBSTRING(tor.info_hash_v2, 1, 20) IN ('$info_hashes_sql')";
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$sql = "
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SELECT tor.info_hash, tor.info_hash_v2, tor.complete_count, snap.seeders, snap.leechers
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FROM " . BB_BT_TORRENTS . " tor
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LEFT JOIN " . BB_BT_TRACKER_SNAP . " snap ON (snap.topic_id = tor.topic_id)
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WHERE $info_hash_where
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";
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$scrapes = DB()->fetch_rowset($sql);
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if (!empty($scrapes)) {
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foreach ($scrapes as $scrape) {
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$hash_v1 = !empty($scrape['info_hash']) ? $scrape['info_hash'] : '';
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$hash_v2 = !empty($scrape['info_hash_v2']) ? substr($scrape['info_hash_v2'], 0, 20) : '';
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$info_hash_scrape = (in_array(urlencode($hash_v1), $info_hash_array[1])) ? $hash_v1 : $hash_v2; // Replace logic to prioritize $hash_v2, in case of future prioritization of v2
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$torrents['files'][$info_hash_scrape] = [
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'complete' => (int)$scrape['seeders'],
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'downloaded' => (int)$scrape['complete_count'],
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'incomplete' => (int)$scrape['leechers']
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];
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CACHE('tr_cache')->set(SCRAPE_LIST_PREFIX . bin2hex($info_hash_scrape), array_slice($torrents['files'], -1, null, true), SCRAPE_LIST_EXPIRE);
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}
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}
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}
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// Verify if torrent registered on tracker
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if (empty($torrents)) {
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msg_die('Torrent not registered, info_hash = ' . (mb_check_encoding($info_hash, 'UTF8') ? $info_hash : $info_hash_hex));
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}
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die(\Arokettu\Bencode\Bencode::encode($torrents));
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