/**
* Internal function which bencodes the data
* into a valid torrent metainfo string
*
* @param array file data
* @return mixed false on failure or the bencoded metainfo string
* @throws File_Bittorrent2_Exception if no file or directory is defined
*/
protected function encodeTorrent(array $info = array())
{
$bencdata = array();
$bencdata['info'] = array();
if ($this->is_file) {
$bencdata['info']['length'] = $info['length'];
$bencdata['info']['md5sum'] = $info['md5sum'];
} else {
if ($this->is_dir) {
if ($this->data_gap !== false) {
$this->pieces .= pack('H*', sha1($this->data_gap));
$this->data_gap = false;
}
$bencdata['info']['files'] = $this->files;
} else {
throw new File_Bittorrent2_Exception('Use ' . __CLASS__ . '::setPath() to define a file or directory.', File_Bittorrent2_Exception::make);
}
}
$bencdata['info']['name'] = $this->name;
$bencdata['info']['piece length'] = $this->piece_length;
$bencdata['info']['pieces'] = $this->pieces;
$bencdata['announce'] = $this->announce;
$bencdata['creation date'] = time();
$bencdata['comment'] = $this->comment;
$bencdata['created by'] = $this->created_by;
// $bencdata['announce-list'] = array($this->announce)
// Encode it
$Encoder = new File_Bittorrent2_Encode();
return $Encoder->encode_array($bencdata);
}
<?php
/**
* Test case for Bug #3970
*
* @see http://pear.php.net/bugs/bug.php?id=3970
*
* @author Markus Tacker <*****@*****.**>
* @version $Id$
* @package File_Bittorrent2
* @subpackage Bugs
*/
require_once '../File/Bittorrent2/Encode.php';
require_once '../File/Bittorrent2/Decode.php';
$Decoder = new File_Bittorrent2_Decode();
$Encoder = new File_Bittorrent2_Encode();
$torrent = $Decoder->decode(file_get_contents('../freebsd.torrent'));
$info_encoded = $Encoder->encode($torrent);
$decoded_info_encoded = $Decoder->decode($info_encoded);
var_dump($torrent['info']['piece length']);
var_dump($decoded_info_encoded['info']['piece length']);
<?php
/**
* Test case for Bug #4570
*
* @see http://pear.php.net/bugs/bug.php?id=4570
*
* @author Justin "nagash" Jones <j dot nagash at gmail dot com>
* @version $Id$
* @package File_Bittorrent2
* @subpackage Bugs
*/
require_once '../File/Bittorrent2/Encode.php';
require_once '../File/Bittorrent2/Decode.php';
$decoder = new File_Bittorrent2_Decode();
$encoder = new File_Bittorrent2_Encode();
error_reporting(E_ALL);
$data = array('broken' => null, 'bit' => 'torrent');
echo '<pre>';
echo 'The data array:' . "\n";
print_r($data);
$encode1 = $encoder->encode_array($data);
$decode1 = $decoder->decode($encode1);
echo "\n" . 'First decode:' . "\n";
print_r($decode1);
// Works fine!
// If you add and remove and change these things, your results will vary.
// Sometimes I just got an empty Array, other times I got data in the wrong keys.
// And for the worst times, it looped indefinately, but I couldn't reproduce that
// with this data - see below for an example.'
$decode1['bit'] = 'testing';
/**
* Decode .torrent file and accumulate information
*
* @param string Filename
* @return mixed Returns an arrayon success or false on error
* @throws File_Bittorrent2_Exception if no file given or bencoded data is corrupt
*/
function decodeFile($file)
{
// Check file
if (!is_file($file)) {
throw new File_Bittorrent2_Exception('Given filename \'' . $file . '\' is not a valid file.', File_Bittorrent2_Exception::source);
}
// Reset public attributes
$this->name = '';
$this->filename = '';
$this->comment = '';
$this->date = 0;
$this->files = array();
$this->size = 0;
$this->created_by = '';
$this->announce = '';
$this->announce_list = array();
$this->position = 0;
$this->info_hash = '';
// Decode .torrent
$this->source = file_get_contents($file);
$this->source_length = strlen($this->source);
$this->decoded = $this->bdecode();
if (!is_array($this->decoded)) {
throw new File_Bittorrent2_Exception('Corrupted bencoded data. Failed to decode data from file \'$file\'.', File_Bittorrent2_Exception::decode);
}
// Compute info_hash
$Encoder = new File_Bittorrent2_Encode();
$this->info_hash = sha1($Encoder->encode($this->decoded['info']));
// Pull information form decoded data
$this->filename = basename($file);
// Name of the torrent - statet by the torrent's author
$this->name = $this->decoded['info']['name'];
// Authors may add comments to a torrent
if (isset($this->decoded['comment'])) {
$this->comment = $this->decoded['comment'];
}
// Creation date of the torrent as unix timestamp
if (isset($this->decoded['creation date'])) {
$this->date = $this->decoded['creation date'];
}
// This contains the signature of the application used to create the torrent
if (isset($this->decoded['created by'])) {
$this->created_by = $this->decoded['created by'];
}
// Get the directory separator
$sep = PHP_OS == 'Linux' ? '/' : '\\';
// There is sometimes an array listing all files
// in the torrent with their individual filesize
if (isset($this->decoded['info']['files']) and is_array($this->decoded['info']['files'])) {
foreach ($this->decoded['info']['files'] as $file) {
$path = join($sep, $file['path']);
// We are computing the total size of the download heres
$this->size += $file['length'];
$this->files[] = array('filename' => $path, 'size' => $file['length']);
}
// In case the torrent contains only on file
} elseif (isset($this->decoded['info']['name'])) {
$this->files[] = array('filename' => $this->decoded['info']['name'], 'size' => $this->decoded['info']['length']);
}
// If the the info->length field is present we are dealing with
// a single file torrent.
if (isset($this->decoded['info']['length']) and $this->size == 0) {
$this->size = $this->decoded['info']['length'];
}
// This contains the tracker the torrent has been received from
if (isset($this->decoded['announce'])) {
$this->announce = $this->decoded['announce'];
}
// This contains a list of all known trackers for this torrent
if (isset($this->decoded['announce-list']) and is_array($this->decoded['announce-list'])) {
$this->announce_list = $this->decoded['announce-list'];
}
// Currently, I'm not sure how to determine an error
// Just try to fetch the info from the decoded data
// and return it
return array('name' => $this->name, 'filename' => $this->filename, 'comment' => $this->comment, 'date' => $this->date, 'created_by' => $this->created_by, 'files' => $this->files, 'size' => $this->size, 'announce' => $this->announce, 'announce_list' => $this->announce_list, 'info_hash' => $this->info_hash);
}
// | Free Software Foundation, Inc. |
// | 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
// +----------------------------------------------------------------------+
/**
* Example usage of File_Bittorrent2
*
* @author Markus Tacker <*****@*****.**>
* @version $Id$
*/
/**
* Include class
*/
require_once 'File/Bittorrent2/Encode.php';
require_once 'File/Bittorrent2/Decode.php';
$File_Bittorrent2_Decode = new File_Bittorrent2_Decode();
$File_Bittorrent2_Encode = new File_Bittorrent2_Encode();
// Encoding vars
echo "Encoding integers\n";
$encodedInt = $File_Bittorrent2_Encode->encode(10);
var_dump($encodedInt);
var_dump($File_Bittorrent2_Decode->decode($encodedInt));
echo "Encoding strings\n";
$encodedStr = $File_Bittorrent2_Encode->encode('This is a string.');
var_dump($encodedStr);
var_dump($File_Bittorrent2_Decode->decode($encodedStr));
echo "Encoding arrays as lists\n";
$encodedList = $File_Bittorrent2_Encode->encode(array('Banana', 'Apple', 'Cherry'));
var_dump($encodedList);
var_dump($File_Bittorrent2_Decode->decode($encodedList));
echo "Encoding arrays as dictionaries\n";
$encodedDict = $File_Bittorrent2_Encode->encode(array('fruits' => array('Banana', 'Apple', 'Cherry', 'subarray' => array(1, 2, 3)), 'ints' => array(1, 2, 3), 'count' => 3));
