www/plugins-dist/medias/lib/getid3/module.archive.hpk.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.hpk.php                                      //
  12 // module for analyzing HPK 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_hpk extends getid3_handler
  22 {
  23         /**
  24          * @return bool
  25          */
  26         public function Analyze() {
  27                 $info = &$this->getid3->info;
  28
  29                 $info['fileformat'] = 'hpk';
  30
  31                 $this->fseek($info['avdataoffset']);
  32                 $HPKheader = $this->fread(36);
  33
  34                 if (substr($HPKheader, 0, 4) == 'BPUL') {
  35
  36                         $info['hpk']['header']['signature']                    =                              substr($HPKheader,  0, 4);
  37                         $info['hpk']['header']['data_offset']                  = getid3_lib::LittleEndian2Int(substr($HPKheader,  4, 4));
  38                         $info['hpk']['header']['fragments_per_file']           = getid3_lib::LittleEndian2Int(substr($HPKheader,  8, 4));
  39                         //$info['hpk']['header']['unknown1']                     = getid3_lib::LittleEndian2Int(substr($HPKheader, 12, 4));
  40                         $info['hpk']['header']['fragments_residual_offset']    = getid3_lib::LittleEndian2Int(substr($HPKheader, 16, 4));
  41                         $info['hpk']['header']['fragments_residual_count']     = getid3_lib::LittleEndian2Int(substr($HPKheader, 20, 4));
  42                         //$info['hpk']['header']['unknown2']                     = getid3_lib::LittleEndian2Int(substr($HPKheader, 24, 4));
  43                         $info['hpk']['header']['fragmented_filesystem_offset'] = getid3_lib::LittleEndian2Int(substr($HPKheader, 28, 4));
  44                         $info['hpk']['header']['fragmented_filesystem_length'] = getid3_lib::LittleEndian2Int(substr($HPKheader, 32, 4));
  45
  46                         $info['hpk']['header']['filesystem_entries'] = $info['hpk']['header']['fragmented_filesystem_length'] / ($info['hpk']['header']['fragments_per_file'] * 8);
  47                         $this->fseek($info['hpk']['header']['fragmented_filesystem_offset']);
  48                         for ($i = 0; $i < $info['hpk']['header']['filesystem_entries']; $i++) {
  49                                 $offset = getid3_lib::LittleEndian2Int($this->fread(4));
  50                                 $length = getid3_lib::LittleEndian2Int($this->fread(4));
  51                                 $info['hpk']['filesystem'][$i] = array('offset' => $offset, 'length' => $length);
  52                         }
  53
  54 $this->error('HPK parsing incomplete (and mostly broken) in this version of getID3() ['.$this->getid3->version().']');
  55
  56 /*
  57                         $filename = '';
  58                         $dirs = array();
  59                         foreach ($info['hpk']['filesystem'] as $key => $filesystemdata) {
  60                                 $this->fseek($filesystemdata['offset']);
  61                                 $first4 = $this->fread(4);
  62                                 if (($first4 == 'LZ4 ') || ($first4 == 'ZLIB')) {
  63                                         // actual data, ignore
  64                                         $info['hpk']['toc'][$key] = array(
  65                                                 'filename' => ltrim(implode('/', $dirs).'/'.$filename, '/'),
  66                                                 'offset'   => $filesystemdata['offset'],
  67                                                 'length'   => $filesystemdata['length'],
  68                                         );
  69                                         $filename = '';
  70                                         $dirs = array();
  71                                 } else {
  72                                         $fragment_index = getid3_lib::LittleEndian2Int($first4);
  73                                         $fragment_type  = getid3_lib::LittleEndian2Int($this->fread(4)); // file = 0, directory = 1
  74                                         $name_length    = getid3_lib::LittleEndian2Int($this->fread(2));
  75                                         if ($fragment_type == 1) {
  76                                                 $dirs[]   = $this->fread($name_length);
  77                                         } else {
  78                                                 $filename = $this->fread($name_length);
  79                                         }
  80                                 }
  81                         }
  82 */
  83
  84                 } else {
  85                         $this->error('Expecting "BPUL" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($HPKheader, 0, 4)).'"');
  86                         return false;
  87                 }
  88
  89                 return true;
  90         }
  91
  92 }