torrent解析类使用https://github.com/Rhilip/Bencode，打补丁支持获取种子hash信息。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | --- Bencode.php.1 2021-02-24 07:30:41.677067125 +0800+++ Bencode.php 2021-03-05 17:52:23.803081067 +0800@@ -26,6 +26,9 @@ */ class Bencode {+ public function info_hash($data, $info_hash) {+ return sha1(substr($data, $info_hash['pos'], $info_hash['length']));+ } /** * Decode bencoded data from string *@@ -46,7 +49,15 @@ $return = []; while ($data[$pos] !== 'e') { $key = self::decode($data, $pos);+ if (!strcmp($key, "info")) {+ //if ($key === "info") {+ $return['info_hash']['pos'] = $pos;+ } $value = self::decode($data, $pos);+ if (!strcmp($key, "info")) {+ //if ($key === "info") {+ $return['info_hash']['length'] = ($pos - $return['info_hash']['pos']);+ } if ($key === null || $value === null) { break; }@@ -125,6 +136,9 @@ $return = ''; $check = -1; $list = true;+ if (isset($data['info_hash'])) {+ unset($data['info_hash']);+ } foreach ($data as $key => $value) { if ($key !== ++$check) { $list = false; |
解析种子torrent所包含的文件名称信息，将名称和文件大小组合排序并计算sha，sha相同则2个种子内容一样可自动辅种。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | <?phprequire_once './Bencode.php';require_once './ParseErrorException.php';$bencode = new Bencode(); $str = file_get_contents($filename);$s = $bencode->decode($str);if (isset($s['info']["files"])) { foreach ($s['info']["files"] as $v) { $length = $v["length"]; $file = end($v["path"]); $save[] = $length.$file; }} else { $length = $s['info']["length"]; $file = $s['info']["name"]; $save[] = $length.$file;}if (isset($s["encoding"])) { $coding = $s["encoding"];} else { $coding = mb_detect_encoding(implode('', $save), ['UTF-8', 'GB18030', 'GBK', 'GB2312', 'ISO-8859-1']); echo 'detect encoding: '.$coding.PHP_EOL;}if (!$coding) { $coding = 'UTF-8';}if ($coding != "UTF-8") { foreach ($save as $k => $v) { $save[$k] = mb_convert_encoding($v, "UTF-8", $coding); }}sort($save);$sha1 = sha1(implode('', $save)); |
