Changeset 35 for trunk

Timestamp:

21.07.2005 12:58:19 (3 years ago)

Author:

m

Message:

Added getStats(). Updated docblock.

Location:

trunk

Files:

• File/Bittorrent/Decode.php (modified) (9 diffs)
• scrape.php (added)

trunk/File/Bittorrent/Decode.php

@@ -24 +24 @@
 *   PHP translation by Gerard Krijgsman <webmaster@animesuki.com>
 *   Gerard's regular expressions removed by Carl Ritson <critson@perlfu.co.uk>
-*
 * Info on the .torrent file format
-*
 * BEncoding is a simple, easy to implement method of associating
 * data types with information in a file. The values in a torrent
@@ -36 +34 @@
 * @package File_Bittorrent
 * @category File
-*
 * @author Markus Tacker <m@tacker.org>
-*
 * @version $Id$
 */
@@ -47 +43 @@
 require_once 'PEAR.php';
 require_once 'PHP/Compat.php';
+require_once 'File/Bittorrent/Encode.php';
 
 /**
@@ -54 +51 @@
 
 /**
-* Decode .torrent files
+* Encode data in Bittorrent format
+*
+* Based on
+*   Original Python implementation by Petru Paler <petru@paler.net>
+*   PHP translation by Gerard Krijgsman <webmaster@animesuki.com>
+*   Gerard's regular expressions removed by Carl Ritson <critson@perlfu.co.uk>
+* Info on the .torrent file format
+* BEncoding is a simple, easy to implement method of associating
+* data types with information in a file. The values in a torrent
+* file are bEncoded.
+* There are 4 different data types that can be bEncoded:
+* Integers, Strings, Lists and Dictionaries.
+* [http://www.monduna.com/bt/faq.html]
 *
 * @package File_Bittorrent
 * @category File
+* @author Markus Tacker <m@tacker.org>
 */
 class File_Bittorrent_Decode
@@ -123 +133 @@
     */
     var $_position = 0;
+
+    /**
+    * @var string   Info hash
+    */
+    var $info_hash;
 
     /**
@@ -163 +178 @@
         $this->announce_list = array();
         $this->_position     = 0;
+        $this->info_hash     = '';
 
         // Decode .torrent
@@ -168 +184 @@
         $this->_source_length = strlen($this->_source);
         $decoded = $this->_bdecode();
+
+        // Compute info_hash
+        $Encoder = new File_Bittorrent_Encode;
+        $this->info_hash = sha1($Encoder->encode($decoded['info']));
 
         // Pull information form decoded data
@@ -339 +359 @@
     function _decode_list()
     {
-        $return = array();
+        $return = array();
         $char = $this->_getChar();
         while ($this->_source{$this->_position} != 'e') {
@@ -361 +381 @@
         return $this->_source{$this->_position};
     }
+
+    /**
+    * Returns the online stats for the torrent
+    *
+    * @return array|false
+    */
+    function getStats()
+    {
+        $packed_hash = pack('H*', $this->info_hash);
+        $scrape_url = preg_replace('/\/announce$/', '/scrape', $this->announce) . '?info_hash=' . urlencode($packed_hash);
+        $scrape_data = file_get_contents($scrape_url);
+        $stats = $this->decode($scrape_data);
+        if (!isset($stats['files'][$packed_hash])) {
+            PEAR::raiseError('File_Bittorrent_Decode::getStats() - Invalid scrape data: "' . $scrape_data . '"');
+            return false;
+        }
+        return $stats['files'][$packed_hash];
+    }
 }