www/plugins-dist/medias/lib/getid3/module.archive.xz.php

   1 <?php
   2
   3 /////////////////////////////////////////////////////////////////
   4 /// getID3() by James Heinrich <info@getid3.org>               //
   5 //  available at https://github.com/JamesHeinrich/getID3       //
   6 //            or https://www.getid3.org                        //
   7 //            or http://getid3.sourceforge.net                 //
   8 //  see readme.txt for more details                            //
   9 /////////////////////////////////////////////////////////////////
  10 //                                                             //
  11 // module.archive.xz.php                                       //
  12 // module for analyzing XZ files                               //
  13 // dependencies: NONE                                          //
  14 //                                                            ///
  15 /////////////////////////////////////////////////////////////////
  16
  17 if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
  18         exit;
  19 }
  20
  21 class getid3_xz extends getid3_handler
  22 {
  23
  24         /**
  25          * @return bool
  26          */
  27         public function Analyze() {
  28                 $info = &$this->getid3->info;
  29
  30                 $this->fseek($info['avdataoffset']);
  31                 $xzheader = $this->fread(6);
  32
  33                 // https://tukaani.org/xz/xz-file-format-1.0.4.txt
  34                 $info['xz']['stream_header']['magic'] = substr($xzheader, 0, 6);
  35                 if ($info['xz']['stream_header']['magic'] != "\xFD".'7zXZ'."\x00") {
  36                         $this->error('Invalid XZ stream header magic (expecting FD 37 7A 58 5A 00, found '.getid3_lib::PrintHexBytes($info['xz']['stream_header']['magic']).') at offset '.$info['avdataoffset']);
  37                         return false;
  38                 }
  39                 $info['fileformat'] = 'xz';
  40                 $this->error('XZ parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  41                 return false;
  42
  43         }
  44
  45 }