/**
* @param $data
* @return array|null
*/
protected function prepareData($data)
{
if (empty($data)) {
return null;
}
try {
$data = Bencode::decode($data);
} catch (RuntimeException $e) {
return null;
}
if (!(isset($data['files']) && is_array($data['files']))) {
return null;
}
$prepared = ['files' => []];
foreach ($data['files'] as $key => $value) {
if (ctype_print($key)) {
$prepared['files'][$key] = $value;
} else {
$prepared['files'][bin2hex($key)] = $value;
}
}
return $prepared;
}
public function announce($tid, $uid)
{
// torrent klients (utorrent) atver šādu adresi
// http://xxx/announce/2/2?info_hash=xxxx&peer_id=xxxx&numwant=50&event=started&port=123&left=0
// parametru skaidrojums
// https://wiki.theory.org/BitTorrentSpecification (Tracker Request Parameters)
$torrent = Torrent::findOrFail($tid);
$user = User::findOrFail($uid);
Eloquent::unguard();
// atlasa ierakstu vai izveido jaunu
$data = TorrentUser::firstOrCreate(array('torrent_id' => $torrent->id, 'user_id' => $user->id, 'peer_id' => @$_GET['peer_id']));
$data->ip = $_SERVER['REMOTE_ADDR'];
// utorrent ip adrese
$data->port = (int) @$_GET['port'];
// utorrent ports
$data->peer_id = @$_GET['peer_id'];
// utorrent kaut kāds id
$data->seeding = @$_GET['left'] == 0;
// cik baiti atlikuši lejuplādēt (0 = pabeigts)
if (@$_GET['event'] == 'stopped') {
$data->delete();
// nospieda stop pogu, dzēšam
} else {
$data->save();
}
$numwant = isset($_GET['numwant']) ? (int) $_GET['numwant'] : 50;
// cik datus par citiem lietotājiem grib
$complete = TorrentUser::where('torrent_id', $torrent->id)->where('seeding', true)->count();
// saskaita šim torrentam seederus
$incomplete = TorrentUser::where('torrent_id', $torrent->id)->where('seeding', false)->count();
// saskaita šim torrentam leecherus
$peers = TorrentUser::where('torrent_id', $torrent->id)->select('peer_id', 'ip', 'port')->take($numwant)->get()->toArray();
// https://wiki.theory.org/BitTorrentSpecification (Tracker Response)
$response = array('interval' => 60, 'tracker id' => 'tracker', 'complete' => $complete, 'incomplete' => $incomplete, 'peers' => $peers);
$response = Response::make(Bencode::encode($response), 200);
$response->header('Content-Type', 'text/plain');
return $response;
}
public function getDownload($id)
{
$torrent = Torrent::find($id);
if (!$torrent) {
App::abort(404);
}
$torrent->downloads += 1;
$torrent->save();
$decoded = Bencode::decode($torrent->file);
$decoded['announce'] = Config::get('app.url') . '/announce/' . $torrent->id . '/' . Auth::user()->id;
unset($decoded['announce-list']);
$torrent->file = Bencode::encode($decoded);
$response = Response::make($torrent->file, 200);
$response->header('Content-Type', 'application/x-bittorrent');
// http://x-bittorrent.mime-application.com/
$response->header('Content-Disposition', 'attachment; filename=' . $torrent->name . '.torrent');
// http://stackoverflow.com/questions/93551/how-to-encode-the-filename-parameter-of-content-disposition-header-in-http
return $response;
}
/**
* Декодує дані з torrent файла
* @param TorrentFile $torrentFile
* @param $data
*/
public static function decode(TorrentFile $torrentFile, $data)
{
$torrent = $torrentFile->getTorrent();
$data = \Rych\Bencode\Bencode::decode($data);
foreach ($data as $itemKey => $item) {
switch ($itemKey) {
case 'announce-list':
foreach ($item as $announceItem) {
$announce = new Announce();
$announce->setAnnounce($announceItem[0]);
$torrent->addAnnounce($announce);
}
break;
case 'comment':
$torrent->setComment($item);
break;
case 'created by':
$torrent->setCreated_by($item);
break;
case 'creation date':
$torrent->setCreation_date($item);
break;
case 'encoding':
$torrent->setEncoding($item);
break;
case 'rss':
$torrent->setRss($item);
break;
case 'similar_torrents':
$torrent->setSimilar_torrents($item);
break;
case 'url-list':
foreach ($item as $urlItem) {
$url = new Url();
$url->setUrl($urlItem);
$torrent->addUrl($url);
}
break;
case 'website':
$torrent->setWebsite($item);
break;
case 'info':
foreach ($item as $infoKeyItem => $itemInfo) {
switch ($infoKeyItem) {
case 'files':
foreach ($itemInfo as $fileItem) {
$file = new File();
$file->setLength($fileItem['length']);
$file->setPath(implode('/', $fileItem['path']));
$torrent->getInfo()->addFile($file);
}
break;
case 'name':
$torrent->getInfo()->setName($itemInfo);
break;
case 'piece length':
$torrent->getInfo()->setPiece_length($itemInfo);
break;
case 'pieces':
$torrent->getInfo()->setPieces($itemInfo);
break;
case 'private':
$torrent->getInfo()->setPrivate($itemInfo);
break;
case 'length':
$torrent->getInfo()->setPrivate($itemInfo);
break;
default:
$torrent->getInfo()->addOtherItem($infoKeyItem, $itemInfo);
}
}
break;
default:
$torrent->addOtherItem($itemKey, $item);
}
}
}
