www/plugins-dist/medias/lib/getid3/module.misc.iso.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.misc.iso.php                                         //
  12 // module for analyzing ISO 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_iso extends getid3_handler
  22 {
  23         /**
  24          * @return bool
  25          */
  26         public function Analyze() {
  27                 $info = &$this->getid3->info;
  28
  29                 $info['fileformat'] = 'iso';
  30
  31                 for ($i = 16; $i <= 19; $i++) {
  32                         $this->fseek(2048 * $i);
  33                         $ISOheader = $this->fread(2048);
  34                         if (substr($ISOheader, 1, 5) == 'CD001') {
  35                                 switch (ord($ISOheader[0])) {
  36                                         case 1:
  37                                                 $info['iso']['primary_volume_descriptor']['offset'] = 2048 * $i;
  38                                                 $this->ParsePrimaryVolumeDescriptor($ISOheader);
  39                                                 break;
  40
  41                                         case 2:
  42                                                 $info['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i;
  43                                                 $this->ParseSupplementaryVolumeDescriptor($ISOheader);
  44                                                 break;
  45
  46                                         default:
  47                                                 // skip
  48                                                 break;
  49                                 }
  50                         }
  51                 }
  52
  53                 $this->ParsePathTable();
  54
  55                 $info['iso']['files'] = array();
  56                 foreach ($info['iso']['path_table']['directories'] as $directorynum => $directorydata) {
  57                         $info['iso']['directories'][$directorynum] = $this->ParseDirectoryRecord($directorydata);
  58                 }
  59
  60                 return true;
  61         }
  62
  63         /**
  64          * @param string $ISOheader
  65          *
  66          * @return bool
  67          */
  68         public function ParsePrimaryVolumeDescriptor(&$ISOheader) {
  69                 // ISO integer values are stored *BOTH* Little-Endian AND Big-Endian format!!
  70                 // ie 12345 == 0x3039  is stored as $39 $30 $30 $39 in a 4-byte field
  71
  72                 // shortcuts
  73                 $info = &$this->getid3->info;
  74                 $info['iso']['primary_volume_descriptor']['raw'] = array();
  75                 $thisfile_iso_primaryVD     = &$info['iso']['primary_volume_descriptor'];
  76                 $thisfile_iso_primaryVD_raw = &$thisfile_iso_primaryVD['raw'];
  77
  78                 $thisfile_iso_primaryVD_raw['volume_descriptor_type']         = getid3_lib::LittleEndian2Int(substr($ISOheader,    0, 1));
  79                 $thisfile_iso_primaryVD_raw['standard_identifier']            =                  substr($ISOheader,    1, 5);
  80                 if ($thisfile_iso_primaryVD_raw['standard_identifier'] != 'CD001') {
  81                         $this->error('Expected "CD001" at offset ('.($thisfile_iso_primaryVD['offset'] + 1).'), found "'.$thisfile_iso_primaryVD_raw['standard_identifier'].'" instead');
  82                         unset($info['fileformat']);
  83                         unset($info['iso']);
  84                         return false;
  85                 }
  86
  87
  88                 $thisfile_iso_primaryVD_raw['volume_descriptor_version']     = getid3_lib::LittleEndian2Int(substr($ISOheader,    6, 1));
  89                 //$thisfile_iso_primaryVD_raw['unused_1']                      =                              substr($ISOheader,    7, 1);
  90                 $thisfile_iso_primaryVD_raw['system_identifier']             =                              substr($ISOheader,    8, 32);
  91                 $thisfile_iso_primaryVD_raw['volume_identifier']             =                              substr($ISOheader,   40, 32);
  92                 //$thisfile_iso_primaryVD_raw['unused_2']                      =                              substr($ISOheader,   72, 8);
  93                 $thisfile_iso_primaryVD_raw['volume_space_size']             = getid3_lib::LittleEndian2Int(substr($ISOheader,   80, 4));
  94                 //$thisfile_iso_primaryVD_raw['unused_3']                      =                              substr($ISOheader,   88, 32);
  95                 $thisfile_iso_primaryVD_raw['volume_set_size']               = getid3_lib::LittleEndian2Int(substr($ISOheader,  120, 2));
  96                 $thisfile_iso_primaryVD_raw['volume_sequence_number']        = getid3_lib::LittleEndian2Int(substr($ISOheader,  124, 2));
  97                 $thisfile_iso_primaryVD_raw['logical_block_size']            = getid3_lib::LittleEndian2Int(substr($ISOheader,  128, 2));
  98                 $thisfile_iso_primaryVD_raw['path_table_size']               = getid3_lib::LittleEndian2Int(substr($ISOheader,  132, 4));
  99                 $thisfile_iso_primaryVD_raw['path_table_l_location']         = getid3_lib::LittleEndian2Int(substr($ISOheader,  140, 2));
 100                 $thisfile_iso_primaryVD_raw['path_table_l_opt_location']     = getid3_lib::LittleEndian2Int(substr($ISOheader,  144, 2));
 101                 $thisfile_iso_primaryVD_raw['path_table_m_location']         = getid3_lib::LittleEndian2Int(substr($ISOheader,  148, 2));
 102                 $thisfile_iso_primaryVD_raw['path_table_m_opt_location']     = getid3_lib::LittleEndian2Int(substr($ISOheader,  152, 2));
 103                 $thisfile_iso_primaryVD_raw['root_directory_record']         =                              substr($ISOheader,  156, 34);
 104                 $thisfile_iso_primaryVD_raw['volume_set_identifier']         =                              substr($ISOheader,  190, 128);
 105                 $thisfile_iso_primaryVD_raw['publisher_identifier']          =                              substr($ISOheader,  318, 128);
 106                 $thisfile_iso_primaryVD_raw['data_preparer_identifier']      =                              substr($ISOheader,  446, 128);
 107                 $thisfile_iso_primaryVD_raw['application_identifier']        =                              substr($ISOheader,  574, 128);
 108                 $thisfile_iso_primaryVD_raw['copyright_file_identifier']     =                              substr($ISOheader,  702, 37);
 109                 $thisfile_iso_primaryVD_raw['abstract_file_identifier']      =                              substr($ISOheader,  739, 37);
 110                 $thisfile_iso_primaryVD_raw['bibliographic_file_identifier'] =                              substr($ISOheader,  776, 37);
 111                 $thisfile_iso_primaryVD_raw['volume_creation_date_time']     =                              substr($ISOheader,  813, 17);
 112                 $thisfile_iso_primaryVD_raw['volume_modification_date_time'] =                              substr($ISOheader,  830, 17);
 113                 $thisfile_iso_primaryVD_raw['volume_expiration_date_time']   =                              substr($ISOheader,  847, 17);
 114                 $thisfile_iso_primaryVD_raw['volume_effective_date_time']    =                              substr($ISOheader,  864, 17);
 115                 $thisfile_iso_primaryVD_raw['file_structure_version']        = getid3_lib::LittleEndian2Int(substr($ISOheader,  881, 1));
 116                 //$thisfile_iso_primaryVD_raw['unused_4']                      = getid3_lib::LittleEndian2Int(substr($ISOheader,  882, 1));
 117                 $thisfile_iso_primaryVD_raw['application_data']              =                              substr($ISOheader,  883, 512);
 118                 //$thisfile_iso_primaryVD_raw['unused_5']                      =                              substr($ISOheader, 1395, 653);
 119
 120                 $thisfile_iso_primaryVD['system_identifier']             = trim($thisfile_iso_primaryVD_raw['system_identifier']);
 121                 $thisfile_iso_primaryVD['volume_identifier']             = trim($thisfile_iso_primaryVD_raw['volume_identifier']);
 122                 $thisfile_iso_primaryVD['volume_set_identifier']         = trim($thisfile_iso_primaryVD_raw['volume_set_identifier']);
 123                 $thisfile_iso_primaryVD['publisher_identifier']          = trim($thisfile_iso_primaryVD_raw['publisher_identifier']);
 124                 $thisfile_iso_primaryVD['data_preparer_identifier']      = trim($thisfile_iso_primaryVD_raw['data_preparer_identifier']);
 125                 $thisfile_iso_primaryVD['application_identifier']        = trim($thisfile_iso_primaryVD_raw['application_identifier']);
 126                 $thisfile_iso_primaryVD['copyright_file_identifier']     = trim($thisfile_iso_primaryVD_raw['copyright_file_identifier']);
 127                 $thisfile_iso_primaryVD['abstract_file_identifier']      = trim($thisfile_iso_primaryVD_raw['abstract_file_identifier']);
 128                 $thisfile_iso_primaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_primaryVD_raw['bibliographic_file_identifier']);
 129                 $thisfile_iso_primaryVD['volume_creation_date_time']     = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_creation_date_time']);
 130                 $thisfile_iso_primaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_modification_date_time']);
 131                 $thisfile_iso_primaryVD['volume_expiration_date_time']   = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_expiration_date_time']);
 132                 $thisfile_iso_primaryVD['volume_effective_date_time']    = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_effective_date_time']);
 133
 134                 if (($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048) > $info['filesize']) {
 135                         $this->error('Volume Space Size ('.($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$info['filesize'].' bytes) (truncated file?)');
 136                 }
 137
 138                 return true;
 139         }
 140
 141         /**
 142          * @param string $ISOheader
 143          *
 144          * @return bool
 145          */
 146         public function ParseSupplementaryVolumeDescriptor(&$ISOheader) {
 147                 // ISO integer values are stored Both-Endian format!!
 148                 // ie 12345 == 0x3039  is stored as $39 $30 $30 $39 in a 4-byte field
 149
 150                 // shortcuts
 151                 $info = &$this->getid3->info;
 152                 $info['iso']['supplementary_volume_descriptor']['raw'] = array();
 153                 $thisfile_iso_supplementaryVD     = &$info['iso']['supplementary_volume_descriptor'];
 154                 $thisfile_iso_supplementaryVD_raw = &$thisfile_iso_supplementaryVD['raw'];
 155
 156                 $thisfile_iso_supplementaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($ISOheader,    0, 1));
 157                 $thisfile_iso_supplementaryVD_raw['standard_identifier']    =                  substr($ISOheader,    1, 5);
 158                 if ($thisfile_iso_supplementaryVD_raw['standard_identifier'] != 'CD001') {
 159                         $this->error('Expected "CD001" at offset ('.($thisfile_iso_supplementaryVD['offset'] + 1).'), found "'.$thisfile_iso_supplementaryVD_raw['standard_identifier'].'" instead');
 160                         unset($info['fileformat']);
 161                         unset($info['iso']);
 162                         return false;
 163                 }
 164
 165                 $thisfile_iso_supplementaryVD_raw['volume_descriptor_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader,    6, 1));
 166                 //$thisfile_iso_supplementaryVD_raw['unused_1']                  =                              substr($ISOheader,    7, 1);
 167                 $thisfile_iso_supplementaryVD_raw['system_identifier']         =                              substr($ISOheader,    8, 32);
 168                 $thisfile_iso_supplementaryVD_raw['volume_identifier']         =                              substr($ISOheader,   40, 32);
 169                 //$thisfile_iso_supplementaryVD_raw['unused_2']                  =                              substr($ISOheader,   72, 8);
 170                 $thisfile_iso_supplementaryVD_raw['volume_space_size']         = getid3_lib::LittleEndian2Int(substr($ISOheader,   80, 4));
 171                 if ($thisfile_iso_supplementaryVD_raw['volume_space_size'] == 0) {
 172                         // Supplementary Volume Descriptor not used
 173                         //unset($thisfile_iso_supplementaryVD);
 174                         //return false;
 175                 }
 176
 177                 //$thisfile_iso_supplementaryVD_raw['unused_3']                       =                              substr($ISOheader,   88, 32);
 178                 $thisfile_iso_supplementaryVD_raw['volume_set_size']                = getid3_lib::LittleEndian2Int(substr($ISOheader,  120, 2));
 179                 $thisfile_iso_supplementaryVD_raw['volume_sequence_number']         = getid3_lib::LittleEndian2Int(substr($ISOheader,  124, 2));
 180                 $thisfile_iso_supplementaryVD_raw['logical_block_size']             = getid3_lib::LittleEndian2Int(substr($ISOheader,  128, 2));
 181                 $thisfile_iso_supplementaryVD_raw['path_table_size']                = getid3_lib::LittleEndian2Int(substr($ISOheader,  132, 4));
 182                 $thisfile_iso_supplementaryVD_raw['path_table_l_location']          = getid3_lib::LittleEndian2Int(substr($ISOheader,  140, 2));
 183                 $thisfile_iso_supplementaryVD_raw['path_table_l_opt_location']      = getid3_lib::LittleEndian2Int(substr($ISOheader,  144, 2));
 184                 $thisfile_iso_supplementaryVD_raw['path_table_m_location']          = getid3_lib::LittleEndian2Int(substr($ISOheader,  148, 2));
 185                 $thisfile_iso_supplementaryVD_raw['path_table_m_opt_location']      = getid3_lib::LittleEndian2Int(substr($ISOheader,  152, 2));
 186                 $thisfile_iso_supplementaryVD_raw['root_directory_record']          =                              substr($ISOheader,  156, 34);
 187                 $thisfile_iso_supplementaryVD_raw['volume_set_identifier']          =                              substr($ISOheader,  190, 128);
 188                 $thisfile_iso_supplementaryVD_raw['publisher_identifier']           =                              substr($ISOheader,  318, 128);
 189                 $thisfile_iso_supplementaryVD_raw['data_preparer_identifier']       =                              substr($ISOheader,  446, 128);
 190                 $thisfile_iso_supplementaryVD_raw['application_identifier']         =                              substr($ISOheader,  574, 128);
 191                 $thisfile_iso_supplementaryVD_raw['copyright_file_identifier']      =                              substr($ISOheader,  702, 37);
 192                 $thisfile_iso_supplementaryVD_raw['abstract_file_identifier']       =                              substr($ISOheader,  739, 37);
 193                 $thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier']  =                              substr($ISOheader,  776, 37);
 194                 $thisfile_iso_supplementaryVD_raw['volume_creation_date_time']      =                              substr($ISOheader,  813, 17);
 195                 $thisfile_iso_supplementaryVD_raw['volume_modification_date_time']  =                              substr($ISOheader,  830, 17);
 196                 $thisfile_iso_supplementaryVD_raw['volume_expiration_date_time']    =                              substr($ISOheader,  847, 17);
 197                 $thisfile_iso_supplementaryVD_raw['volume_effective_date_time']     =                              substr($ISOheader,  864, 17);
 198                 $thisfile_iso_supplementaryVD_raw['file_structure_version']         = getid3_lib::LittleEndian2Int(substr($ISOheader,  881, 1));
 199                 //$thisfile_iso_supplementaryVD_raw['unused_4']                       = getid3_lib::LittleEndian2Int(substr($ISOheader,  882, 1));
 200                 $thisfile_iso_supplementaryVD_raw['application_data']               =                              substr($ISOheader,  883, 512);
 201                 //$thisfile_iso_supplementaryVD_raw['unused_5']                       =                              substr($ISOheader, 1395, 653);
 202
 203                 $thisfile_iso_supplementaryVD['system_identifier']              = trim($thisfile_iso_supplementaryVD_raw['system_identifier']);
 204                 $thisfile_iso_supplementaryVD['volume_identifier']              = trim($thisfile_iso_supplementaryVD_raw['volume_identifier']);
 205                 $thisfile_iso_supplementaryVD['volume_set_identifier']          = trim($thisfile_iso_supplementaryVD_raw['volume_set_identifier']);
 206                 $thisfile_iso_supplementaryVD['publisher_identifier']           = trim($thisfile_iso_supplementaryVD_raw['publisher_identifier']);
 207                 $thisfile_iso_supplementaryVD['data_preparer_identifier']       = trim($thisfile_iso_supplementaryVD_raw['data_preparer_identifier']);
 208                 $thisfile_iso_supplementaryVD['application_identifier']         = trim($thisfile_iso_supplementaryVD_raw['application_identifier']);
 209                 $thisfile_iso_supplementaryVD['copyright_file_identifier']      = trim($thisfile_iso_supplementaryVD_raw['copyright_file_identifier']);
 210                 $thisfile_iso_supplementaryVD['abstract_file_identifier']       = trim($thisfile_iso_supplementaryVD_raw['abstract_file_identifier']);
 211                 $thisfile_iso_supplementaryVD['bibliographic_file_identifier']  = trim($thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier']);
 212                 $thisfile_iso_supplementaryVD['volume_creation_date_time']      = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_creation_date_time']);
 213                 $thisfile_iso_supplementaryVD['volume_modification_date_time']  = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_modification_date_time']);
 214                 $thisfile_iso_supplementaryVD['volume_expiration_date_time']    = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_expiration_date_time']);
 215                 $thisfile_iso_supplementaryVD['volume_effective_date_time']     = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_effective_date_time']);
 216
 217                 if (($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']) > $info['filesize']) {
 218                         $this->error('Volume Space Size ('.($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']).' bytes) is larger than the file size ('.$info['filesize'].' bytes) (truncated file?)');
 219                 }
 220
 221                 return true;
 222         }
 223
 224         /**
 225          * @return bool
 226          */
 227         public function ParsePathTable() {
 228                 $info = &$this->getid3->info;
 229                 if (!isset($info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) {
 230                         return false;
 231                 }
 232                 if (isset($info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'])) {
 233                         $PathTableLocation = $info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'];
 234                         $PathTableSize     = $info['iso']['supplementary_volume_descriptor']['raw']['path_table_size'];
 235                         $TextEncoding      = 'UTF-16BE'; // Big-Endian Unicode
 236                 } else {
 237                         $PathTableLocation = $info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'];
 238                         $PathTableSize     = $info['iso']['primary_volume_descriptor']['raw']['path_table_size'];
 239                         $TextEncoding      = 'ISO-8859-1'; // Latin-1
 240                 }
 241
 242                 if (($PathTableLocation * 2048) > $info['filesize']) {
 243                         $this->error('Path Table Location specifies an offset ('.($PathTableLocation * 2048).') beyond the end-of-file ('.$info['filesize'].')');
 244                         return false;
 245                 }
 246
 247                 $info['iso']['path_table']['offset'] = $PathTableLocation * 2048;
 248                 $this->fseek($info['iso']['path_table']['offset']);
 249                 $info['iso']['path_table']['raw'] = $this->fread($PathTableSize);
 250
 251                 $offset = 0;
 252                 $pathcounter = 1;
 253                 while ($offset < $PathTableSize) {
 254                         // shortcut
 255                         $info['iso']['path_table']['directories'][$pathcounter] = array();
 256                         $thisfile_iso_pathtable_directories_current = &$info['iso']['path_table']['directories'][$pathcounter];
 257
 258                         $thisfile_iso_pathtable_directories_current['length']           = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 1));
 259                         $offset += 1;
 260                         $thisfile_iso_pathtable_directories_current['extended_length']  = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 1));
 261                         $offset += 1;
 262                         $thisfile_iso_pathtable_directories_current['location_logical'] = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 4));
 263                         $offset += 4;
 264                         $thisfile_iso_pathtable_directories_current['parent_directory'] = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 2));
 265                         $offset += 2;
 266                         $thisfile_iso_pathtable_directories_current['name']             =                  substr($info['iso']['path_table']['raw'], $offset, $thisfile_iso_pathtable_directories_current['length']);
 267                         $offset += $thisfile_iso_pathtable_directories_current['length'] + ($thisfile_iso_pathtable_directories_current['length'] % 2);
 268
 269                         $thisfile_iso_pathtable_directories_current['name_ascii']       = getid3_lib::iconv_fallback($TextEncoding, $info['encoding'], $thisfile_iso_pathtable_directories_current['name']);
 270
 271                         $thisfile_iso_pathtable_directories_current['location_bytes'] = $thisfile_iso_pathtable_directories_current['location_logical'] * 2048;
 272                         if ($pathcounter == 1) {
 273                                 $thisfile_iso_pathtable_directories_current['full_path'] = '/';
 274                         } else {
 275                                 $thisfile_iso_pathtable_directories_current['full_path'] = $info['iso']['path_table']['directories'][$thisfile_iso_pathtable_directories_current['parent_directory']]['full_path'].$thisfile_iso_pathtable_directories_current['name_ascii'].'/';
 276                         }
 277                         $FullPathArray[] = $thisfile_iso_pathtable_directories_current['full_path'];
 278
 279                         $pathcounter++;
 280                 }
 281
 282                 return true;
 283         }
 284
 285         /**
 286          * @param array $directorydata
 287          *
 288          * @return array
 289          */
 290         public function ParseDirectoryRecord($directorydata) {
 291                 $info = &$this->getid3->info;
 292                 if (isset($info['iso']['supplementary_volume_descriptor'])) {
 293                         $TextEncoding = 'UTF-16BE';   // Big-Endian Unicode
 294                 } else {
 295                         $TextEncoding = 'ISO-8859-1'; // Latin-1
 296                 }
 297
 298                 $this->fseek($directorydata['location_bytes']);
 299                 $DirectoryRecordData = $this->fread(1);
 300                 $DirectoryRecord = array();
 301
 302                 while (ord($DirectoryRecordData[0]) > 33) {
 303
 304                         $DirectoryRecordData .= $this->fread(ord($DirectoryRecordData[0]) - 1);
 305
 306                         $ThisDirectoryRecord = array();
 307
 308                         $ThisDirectoryRecord['raw']['length']                    = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData,  0, 1));
 309                         $ThisDirectoryRecord['raw']['extended_attribute_length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData,  1, 1));
 310                         $ThisDirectoryRecord['raw']['offset_logical']            = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData,  2, 4));
 311                         $ThisDirectoryRecord['raw']['filesize']                  = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 10, 4));
 312                         $ThisDirectoryRecord['raw']['recording_date_time']       =                  substr($DirectoryRecordData, 18, 7);
 313                         $ThisDirectoryRecord['raw']['file_flags']                = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 25, 1));
 314                         $ThisDirectoryRecord['raw']['file_unit_size']            = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 26, 1));
 315                         $ThisDirectoryRecord['raw']['interleave_gap_size']       = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 27, 1));
 316                         $ThisDirectoryRecord['raw']['volume_sequence_number']    = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 28, 2));
 317                         $ThisDirectoryRecord['raw']['file_identifier_length']    = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 32, 1));
 318                         $ThisDirectoryRecord['raw']['file_identifier']           =                  substr($DirectoryRecordData, 33, $ThisDirectoryRecord['raw']['file_identifier_length']);
 319
 320                         $ThisDirectoryRecord['file_identifier_ascii']            = getid3_lib::iconv_fallback($TextEncoding, $info['encoding'], $ThisDirectoryRecord['raw']['file_identifier']);
 321
 322                         $ThisDirectoryRecord['filesize']                  = $ThisDirectoryRecord['raw']['filesize'];
 323                         $ThisDirectoryRecord['offset_bytes']              = $ThisDirectoryRecord['raw']['offset_logical'] * 2048;
 324                         $ThisDirectoryRecord['file_flags']['hidden']      = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x01);
 325                         $ThisDirectoryRecord['file_flags']['directory']   = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x02);
 326                         $ThisDirectoryRecord['file_flags']['associated']  = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x04);
 327                         $ThisDirectoryRecord['file_flags']['extended']    = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x08);
 328                         $ThisDirectoryRecord['file_flags']['permissions'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x10);
 329                         $ThisDirectoryRecord['file_flags']['multiple']    = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x80);
 330                         $ThisDirectoryRecord['recording_timestamp']       = $this->ISOtime2UNIXtime($ThisDirectoryRecord['raw']['recording_date_time']);
 331
 332                         if ($ThisDirectoryRecord['file_flags']['directory']) {
 333                                 $ThisDirectoryRecord['filename'] = $directorydata['full_path'];
 334                         } else {
 335                                 $ThisDirectoryRecord['filename'] = $directorydata['full_path'].$this->ISOstripFilenameVersion($ThisDirectoryRecord['file_identifier_ascii']);
 336                                 $info['iso']['files'] = getid3_lib::array_merge_clobber($info['iso']['files'], getid3_lib::CreateDeepArray($ThisDirectoryRecord['filename'], '/', $ThisDirectoryRecord['filesize']));
 337                         }
 338
 339                         $DirectoryRecord[] = $ThisDirectoryRecord;
 340                         $DirectoryRecordData = $this->fread(1);
 341                 }
 342
 343                 return $DirectoryRecord;
 344         }
 345
 346         /**
 347          * @param string $ISOfilename
 348          *
 349          * @return string
 350          */
 351         public function ISOstripFilenameVersion($ISOfilename) {
 352                 // convert 'filename.ext;1' to 'filename.ext'
 353                 if (!strstr($ISOfilename, ';')) {
 354                         return $ISOfilename;
 355                 } else {
 356                         return substr($ISOfilename, 0, strpos($ISOfilename, ';'));
 357                 }
 358         }
 359
 360         /**
 361          * @param string $ISOtime
 362          *
 363          * @return int|false
 364          */
 365         public function ISOtimeText2UNIXtime($ISOtime) {
 366
 367                 $UNIXyear   = (int) substr($ISOtime,  0, 4);
 368                 $UNIXmonth  = (int) substr($ISOtime,  4, 2);
 369                 $UNIXday    = (int) substr($ISOtime,  6, 2);
 370                 $UNIXhour   = (int) substr($ISOtime,  8, 2);
 371                 $UNIXminute = (int) substr($ISOtime, 10, 2);
 372                 $UNIXsecond = (int) substr($ISOtime, 12, 2);
 373
 374                 if (!$UNIXyear) {
 375                         return false;
 376                 }
 377                 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
 378         }
 379
 380         /**
 381          * @param string $ISOtime
 382          *
 383          * @return int
 384          */
 385         public function ISOtime2UNIXtime($ISOtime) {
 386                 // Represented by seven bytes:
 387                 // 1: Number of years since 1900
 388                 // 2: Month of the year from 1 to 12
 389                 // 3: Day of the Month from 1 to 31
 390                 // 4: Hour of the day from 0 to 23
 391                 // 5: Minute of the hour from 0 to 59
 392                 // 6: second of the minute from 0 to 59
 393                 // 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)
 394
 395                 $UNIXyear   = ord($ISOtime[0]) + 1900;
 396                 $UNIXmonth  = ord($ISOtime[1]);
 397                 $UNIXday    = ord($ISOtime[2]);
 398                 $UNIXhour   = ord($ISOtime[3]);
 399                 $UNIXminute = ord($ISOtime[4]);
 400                 $UNIXsecond = ord($ISOtime[5]);
 401                 $GMToffset  = $this->TwosCompliment2Decimal(ord($ISOtime[5]));
 402
 403                 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
 404         }
 405
 406         /**
 407          * @param int $BinaryValue
 408          *
 409          * @return int
 410          */
 411         public function TwosCompliment2Decimal($BinaryValue) {
 412                 // http://sandbox.mc.edu/~bennet/cs110/tc/tctod.html
 413                 // First check if the number is negative or positive by looking at the sign bit.
 414                 // If it is positive, simply convert it to decimal.
 415                 // If it is negative, make it positive by inverting the bits and adding one.
 416                 // Then, convert the result to decimal.
 417                 // The negative of this number is the value of the original binary.
 418
 419                 if ($BinaryValue & 0x80) {
 420
 421                         // negative number
 422                         return (0 - ((~$BinaryValue & 0xFF) + 1));
 423                 } else {
 424                         // positive number
 425                         return $BinaryValue;
 426                 }
 427         }
 428
 429
 430 }