Mercurial > judyates

     1 <?php

     2 // +----------------------------------------------------------------------+

     3 // | PHP version 5                                                        |

     4 // +----------------------------------------------------------------------+

     5 // | Copyright (c) 2002-2006 James Heinrich, Allan Hansen                 |

     6 // +----------------------------------------------------------------------+

     7 // | This source file is subject to version 2 of the GPL license,         |

     8 // | that is bundled with this package in the file license.txt and is     |

     9 // | available through the world-wide-web at the following url:           |

    10 // | http://www.gnu.org/copyleft/gpl.html                                 |

    11 // +----------------------------------------------------------------------+

    12 // | getID3() - http://getid3.sourceforge.net or http://www.getid3.org    |

    13 // +----------------------------------------------------------------------+

    14 // | Authors: James Heinrich <infoØgetid3*org>                            |

    15 // |          Allan Hansen <ahØartemis*dk>                                |

    16 // +----------------------------------------------------------------------+

    17 // | module.misc.iso.php                                                  |

    18 // | Module for analyzing ISO files                                       |

    19 // | dependencies: NONE                                                   |

    20 // +----------------------------------------------------------------------+

    21 //

    22 // $Id: module.misc.iso.php,v 1.3 2006/11/02 10:48:02 ah Exp $

    23 

    24 

    25 

    26 class getid3_iso extends getid3_handler

    27 {

    28 

    29     public function Analyze() {

    30         

    31         $getid3 = $this->getid3;

    32         

    33         $getid3->info['fileformat'] = 'iso';

    34 

    35         for ($i = 16; $i <= 19; $i++) {

    36             fseek($getid3->fp, 2048 * $i, SEEK_SET);

    37             $iso_header = fread($getid3->fp, 2048);

    38             if (substr($iso_header, 1, 5) == 'CD001') {

    39                 switch (ord($iso_header{0})) {

    40                     case 1:

    41                         $getid3->info['iso']['primary_volume_descriptor']['offset'] = 2048 * $i;

    42                         $this->ParsePrimaryVolumeDescriptor($iso_header);

    43                         break;

    44 

    45                     case 2:

    46                         $getid3->info['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i;

    47                         $this->ParseSupplementaryVolumeDescriptor($iso_header);

    48                         break;

    49 

    50                     default:

    51                         // skip

    52                         break;

    53                 }

    54             }

    55         }

    56 

    57         $this->ParsePathTable();

    58 

    59         $getid3->info['iso']['files'] = array ();

    60         foreach ($getid3->info['iso']['path_table']['directories'] as $directory_num => $directory_data) {

    61             $getid3->info['iso']['directories'][$directory_num] = $this->ParseDirectoryRecord($directory_data);

    62         }

    63 

    64         return true;

    65     }

    66 

    67 

    68 

    69     private function ParsePrimaryVolumeDescriptor(&$iso_header) {

    70         

    71         $getid3 = $this->getid3;

    72         

    73         // ISO integer values are stored *BOTH* Little-Endian AND Big-Endian format!!

    74         // ie 12345 == 0x3039  is stored as $39 $30 $30 $39 in a 4-byte field

    75 

    76         $getid3->info['iso']['primary_volume_descriptor']['raw'] = array ();

    77         $info_iso_primaryVD     = &$getid3->info['iso']['primary_volume_descriptor'];

    78         $info_iso_primaryVD_raw = &$info_iso_primaryVD['raw'];

    79 

    80         $info_iso_primaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($iso_header,    0, 1));

    81         $info_iso_primaryVD_raw['standard_identifier']    = substr($iso_header,    1, 5);

    82         if ($info_iso_primaryVD_raw['standard_identifier'] != 'CD001') {

    83             throw new getid3_exception('Expected "CD001" at offset ('.($info_iso_primaryVD['offset'] + 1).'), found "'.$info_iso_primaryVD_raw['standard_identifier'].'" instead');

    84         }

    85         

    86         getid3_lib::ReadSequence('LittleEndian2Int', $info_iso_primaryVD_raw, $iso_header, 6, 

    87             array (

    88                 'volume_descriptor_version'     => 1,

    89                 'IGNORE-unused_1'               => 1,

    90                 'system_identifier'             => -32,     // string

    91                 'volume_identifier'             => -32,     // string

    92                 'IGNORE-unused_2'               => 8,

    93                 'volume_space_size'             => 4,

    94                 'IGNORE-1'                      => 4,

    95                 'IGNORE-unused_3'               => 32,

    96                 'volume_set_size'               => 2,

    97                 'IGNORE-2'                      => 2,

    98                 'volume_sequence_number'        => 2,

    99                 'IGNORE-3'                      => 2,

   100                 'logical_block_size'            => 2,

   101                 'IGNORE-4'                      => 2,

   102                 'path_table_size'               => 4,

   103                 'IGNORE-5'                      => 4,

   104                 'path_table_l_location'         => 2,

   105                 'IGNORE-6'                      => 2,

   106                 'path_table_l_opt_location'     => 2,

   107                 'IGNORE-7'                      => 2,

   108                 'path_table_m_location'         => 2,

   109                 'IGNORE-8'                      => 2,

   110                 'path_table_m_opt_location'     => 2,

   111                 'IGNORE-9'                      => 2,

   112                 'root_directory_record'         => -34,     // string

   113                 'volume_set_identifier'         => -128,    // string

   114                 'publisher_identifier'          => -128,    // string

   115                 'data_preparer_identifier'      => -128,    // string

   116                 'application_identifier'        => -128,    // string

   117                 'copyright_file_identifier'     => -37,     // string

   118                 'abstract_file_identifier'      => -37,     // string

   119                 'bibliographic_file_identifier' => -37,     // string

   120                 'volume_creation_date_time'     => -17,     // string

   121                 'volume_modification_date_time' => -17,     // string

   122                 'volume_expiration_date_time'   => -17,     // string

   123                 'volume_effective_date_time'    => -17,     // string

   124                 'file_structure_version'        => 1,

   125                 'IGNORE-unused_4'               => 1,

   126                 'application_data'              => -512     // string

   127             )

   128         );

   129 

   130         $info_iso_primaryVD['system_identifier']             = trim($info_iso_primaryVD_raw['system_identifier']);

   131         $info_iso_primaryVD['volume_identifier']             = trim($info_iso_primaryVD_raw['volume_identifier']);

   132         $info_iso_primaryVD['volume_set_identifier']         = trim($info_iso_primaryVD_raw['volume_set_identifier']);

   133         $info_iso_primaryVD['publisher_identifier']          = trim($info_iso_primaryVD_raw['publisher_identifier']);

   134         $info_iso_primaryVD['data_preparer_identifier']      = trim($info_iso_primaryVD_raw['data_preparer_identifier']);

   135         $info_iso_primaryVD['application_identifier']        = trim($info_iso_primaryVD_raw['application_identifier']);

   136         $info_iso_primaryVD['copyright_file_identifier']     = trim($info_iso_primaryVD_raw['copyright_file_identifier']);

   137         $info_iso_primaryVD['abstract_file_identifier']      = trim($info_iso_primaryVD_raw['abstract_file_identifier']);

   138         $info_iso_primaryVD['bibliographic_file_identifier'] = trim($info_iso_primaryVD_raw['bibliographic_file_identifier']);

   139         

   140         $info_iso_primaryVD['volume_creation_date_time']     = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_creation_date_time']);

   141         $info_iso_primaryVD['volume_modification_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_modification_date_time']);

   142         $info_iso_primaryVD['volume_expiration_date_time']   = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_expiration_date_time']);

   143         $info_iso_primaryVD['volume_effective_date_time']    = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_effective_date_time']);

   144 

   145         if (($info_iso_primaryVD_raw['volume_space_size'] * 2048) > $getid3->info['filesize']) {

   146             throw new getid3_exception('Volume Space Size ('.($info_iso_primaryVD_raw['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$getid3->info['filesize'].' bytes) (truncated file?)');

   147         }

   148 

   149         return true;

   150     }

   151 

   152 

   153 

   154     private function ParseSupplementaryVolumeDescriptor(&$iso_header) {

   155         

   156         $getid3 = $this->getid3;

   157         

   158         // ISO integer values are stored Both-Endian format!!

   159         // ie 12345 == 0x3039  is stored as $39 $30 $30 $39 in a 4-byte field

   160 

   161         $getid3->info['iso']['supplementary_volume_descriptor']['raw'] = array ();

   162         $info_iso_supplementaryVD     = &$getid3->info['iso']['supplementary_volume_descriptor'];

   163         $info_iso_supplementaryVD_raw = &$info_iso_supplementaryVD['raw'];

   164 

   165         $info_iso_supplementaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($iso_header, 0, 1));

   166         $info_iso_supplementaryVD_raw['standard_identifier']    = substr($iso_header, 1, 5);

   167         if ($info_iso_supplementaryVD_raw['standard_identifier'] != 'CD001') {

   168             throw new getid3_exception('Expected "CD001" at offset ('.($info_iso_supplementaryVD['offset'] + 1).'), found "'.$info_iso_supplementaryVD_raw['standard_identifier'].'" instead');

   169         }

   170 

   171         getid3_lib::ReadSequence('LittleEndian2Int', $info_iso_supplementaryVD_raw, $iso_header, 6, 

   172             array (

   173                 'volume_descriptor_version'     => 1,

   174                 'IGNORE-unused_1'               => -1,

   175                 'system_identifier'             => -32,

   176                 'volume_identifier'             => -32,

   177                 'IGNORE-unused_2'               => -8,

   178                 'volume_space_size'             => 4,

   179                 'IGNORE-1'                      => 4,

   180                 'IGNORE-unused_3'               => -32,

   181                 'volume_set_size'               => 2,

   182                 'IGNORE-2'                      => 2,

   183                 'volume_sequence_number'        => 2,

   184                 'IGNORE-3'                      => 2,

   185                 'logical_block_size'            => 2,

   186                 'IGNORE-4'                      => 2,

   187                 'path_table_size'               => 4,

   188                 'IGNORE-5'                      => 4,

   189                 'path_table_l_location'         => 2,

   190                 'IGNORE-6'                      => 2,

   191                 'path_table_l_opt_location'     => 2,

   192                 'IGNORE-7'                      => 2,

   193                 'path_table_m_location'         => 2,

   194                 'IGNORE-8'                      => 2,

   195                 'path_table_m_opt_location'     => 2,

   196                 'IGNORE-9'                      => 2,

   197                 'root_directory_record'         => -34,

   198                 'volume_set_identifier'         => -128,

   199                 'publisher_identifier'          => -128,

   200                 'data_preparer_identifier'      => -128,

   201                 'application_identifier'        => -128,

   202                 'copyright_file_identifier'     => -37,

   203                 'abstract_file_identifier'      => -37,

   204                 'bibliographic_file_identifier' => -37,

   205                 'volume_creation_date_time'     => -17,

   206                 'volume_modification_date_time' => -17,

   207                 'volume_expiration_date_time'   => -17,

   208                 'volume_effective_date_time'    => -17,

   209                 'file_structure_version'        => 1,

   210                 'IGNORE-unused_4'               => 1,

   211                 'application_data'              => -512

   212             )

   213         );

   214 

   215         $info_iso_supplementaryVD['system_identifier']              = trim($info_iso_supplementaryVD_raw['system_identifier']);

   216         $info_iso_supplementaryVD['volume_identifier']              = trim($info_iso_supplementaryVD_raw['volume_identifier']);

   217         $info_iso_supplementaryVD['volume_set_identifier']          = trim($info_iso_supplementaryVD_raw['volume_set_identifier']);

   218         $info_iso_supplementaryVD['publisher_identifier']           = trim($info_iso_supplementaryVD_raw['publisher_identifier']);

   219         $info_iso_supplementaryVD['data_preparer_identifier']       = trim($info_iso_supplementaryVD_raw['data_preparer_identifier']);

   220         $info_iso_supplementaryVD['application_identifier']         = trim($info_iso_supplementaryVD_raw['application_identifier']);

   221         $info_iso_supplementaryVD['copyright_file_identifier']      = trim($info_iso_supplementaryVD_raw['copyright_file_identifier']);

   222         $info_iso_supplementaryVD['abstract_file_identifier']       = trim($info_iso_supplementaryVD_raw['abstract_file_identifier']);

   223         $info_iso_supplementaryVD['bibliographic_file_identifier']  = trim($info_iso_supplementaryVD_raw['bibliographic_file_identifier']);

   224         

   225         $info_iso_supplementaryVD['volume_creation_date_time']      = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_creation_date_time']);

   226         $info_iso_supplementaryVD['volume_modification_date_time']  = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_modification_date_time']);

   227         $info_iso_supplementaryVD['volume_expiration_date_time']    = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_expiration_date_time']);

   228         $info_iso_supplementaryVD['volume_effective_date_time']     = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_effective_date_time']);

   229 

   230         if (($info_iso_supplementaryVD_raw['volume_space_size'] * $info_iso_supplementaryVD_raw['logical_block_size']) > $getid3->info['filesize']) {

   231             throw new getid3_exception('Volume Space Size ('.($info_iso_supplementaryVD_raw['volume_space_size'] * $info_iso_supplementaryVD_raw['logical_block_size']).' bytes) is larger than the file size ('.$getid3->info['filesize'].' bytes) (truncated file?)');

   232         }

   233 

   234         return true;

   235     }

   236 

   237 

   238 

   239     private function ParsePathTable() {

   240         

   241         $getid3 = $this->getid3;

   242         

   243         if (!isset($getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($getid3->info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) {

   244             return false;

   245         }

   246         if (isset($getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'])) {

   247             $path_table_location = $getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'];

   248             $path_table_size     = $getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_size'];

   249             $text_encoding       = 'UTF-16BE'; // Big-Endian Unicode

   250         } 

   251         else {

   252             $path_table_location = $getid3->info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'];

   253             $path_table_size     = $getid3->info['iso']['primary_volume_descriptor']['raw']['path_table_size'];

   254             $text_encoding       = 'ISO-8859-1'; // Latin-1

   255         }

   256 

   257         if (($path_table_location * 2048) > $getid3->info['filesize']) {

   258             throw new getid3_exception('Path Table Location specifies an offset ('.($path_table_location * 2048).') beyond the end-of-file ('.$getid3->info['filesize'].')');

   259         }

   260 

   261         $getid3->info['iso']['path_table']['offset'] = $path_table_location * 2048;

   262         fseek($getid3->fp, $getid3->info['iso']['path_table']['offset'], SEEK_SET);

   263         $getid3->info['iso']['path_table']['raw'] = fread($getid3->fp, $path_table_size);

   264 

   265         $offset = 0;

   266         $pathcounter = 1;

   267         while ($offset < $path_table_size) {

   268             

   269             $getid3->info['iso']['path_table']['directories'][$pathcounter] = array ();

   270             $info_iso_pathtable_directories_current = &$getid3->info['iso']['path_table']['directories'][$pathcounter];

   271 

   272             getid3_lib::ReadSequence('LittleEndian2Int', $info_iso_pathtable_directories_current, $getid3->info['iso']['path_table']['raw'], $offset, 

   273                 array (

   274                        'length'           => 1,

   275                     'extended_length'  => 1,

   276                     'location_logical' => 4,

   277                     'parent_directory' => 2,

   278                 )

   279             );

   280             

   281             $info_iso_pathtable_directories_current['name'] = substr($getid3->info['iso']['path_table']['raw'], $offset+8, $info_iso_pathtable_directories_current['length']);

   282             

   283             $offset += 8 + $info_iso_pathtable_directories_current['length'] + ($info_iso_pathtable_directories_current['length'] % 2);

   284 

   285             $info_iso_pathtable_directories_current['name_ascii'] = $getid3->iconv($text_encoding, $getid3->encoding, $info_iso_pathtable_directories_current['name'], true);

   286 

   287             $info_iso_pathtable_directories_current['location_bytes'] = $info_iso_pathtable_directories_current['location_logical'] * 2048;

   288             if ($pathcounter == 1) {

   289                 $info_iso_pathtable_directories_current['full_path'] = '/';

   290             }

   291             else {

   292                 $info_iso_pathtable_directories_current['full_path'] = $getid3->info['iso']['path_table']['directories'][$info_iso_pathtable_directories_current['parent_directory']]['full_path'].$info_iso_pathtable_directories_current['name_ascii'].'/';

   293             }

   294             $full_path_array[] = $info_iso_pathtable_directories_current['full_path'];

   295 

   296             $pathcounter++;

   297         }

   298 

   299         return true;

   300     }

   301 

   302 

   303 

   304     private function ParseDirectoryRecord($directory_data) {

   305         

   306         $getid3 = $this->getid3;

   307         

   308         $text_encoding = isset($getid3->info['iso']['supplementary_volume_descriptor']) ? 'UTF-16BE' : 'ISO-8859-1'; 

   309 

   310         fseek($getid3->fp, $directory_data['location_bytes'], SEEK_SET);

   311         $directory_record_data = fread($getid3->fp, 1);

   312         

   313         while (ord($directory_record_data{0}) > 33) {

   314 

   315             $directory_record_data .= fread($getid3->fp, ord($directory_record_data{0}) - 1);

   316             

   317             $this_directory_record = array ();

   318             $this_directory_record['raw'] = array ();

   319             $this_directory_record_raw = &$this_directory_record['raw'];

   320             

   321             getid3_lib::ReadSequence('LittleEndian2Int', $this_directory_record_raw, $directory_record_data, 0, 

   322                 array (

   323                     'length'                    => 1,

   324                     'extended_attribute_length' => 1,

   325                     'offset_logical'            => 4,

   326                     'IGNORE-1'                  => 4,

   327                     'filesize'                  => 4,

   328                     'IGNORE-2'                  => 4,

   329                     'recording_date_time'       => -7,

   330                     'file_flags'                => 1,

   331                     'file_unit_size'            => 1,

   332                     'interleave_gap_size'       => 1,

   333                     'volume_sequence_number'    => 2,

   334                     'IGNORE-3'                  => 2,

   335                     'file_identifier_length'    => 1,

   336                 )

   337             );

   338 

   339             $this_directory_record_raw['file_identifier'] = substr($directory_record_data, 33, $this_directory_record_raw['file_identifier_length']);

   340             

   341             $this_directory_record['file_identifier_ascii']     = $getid3->iconv($text_encoding, $getid3->encoding, $this_directory_record_raw['file_identifier'], true);

   342             $this_directory_record['filesize']                  = $this_directory_record_raw['filesize'];

   343             $this_directory_record['offset_bytes']              = $this_directory_record_raw['offset_logical'] * 2048;

   344             $this_directory_record['file_flags']['hidden']      = (bool)($this_directory_record_raw['file_flags'] & 0x01);

   345             $this_directory_record['file_flags']['directory']   = (bool)($this_directory_record_raw['file_flags'] & 0x02);

   346             $this_directory_record['file_flags']['associated']  = (bool)($this_directory_record_raw['file_flags'] & 0x04);

   347             $this_directory_record['file_flags']['extended']    = (bool)($this_directory_record_raw['file_flags'] & 0x08);

   348             $this_directory_record['file_flags']['permissions'] = (bool)($this_directory_record_raw['file_flags'] & 0x10);

   349             $this_directory_record['file_flags']['multiple']    = (bool)($this_directory_record_raw['file_flags'] & 0x80);

   350             $this_directory_record['recording_timestamp']       = getid3_iso::ISOtime2UNIXtime($this_directory_record_raw['recording_date_time']);

   351 

   352             if ($this_directory_record['file_flags']['directory']) {

   353                 $this_directory_record['filename'] = $directory_data['full_path'];

   354             }

   355             else {

   356                 $this_directory_record['filename'] = $directory_data['full_path'].getid3_iso::ISOstripFilenameVersion($this_directory_record['file_identifier_ascii']);

   357                 $getid3->info['iso']['files'] = getid3_iso::array_merge_clobber($getid3->info['iso']['files'], getid3_iso::CreateDeepArray($this_directory_record['filename'], '/', $this_directory_record['filesize']));

   358             }

   359             

   360             $directory_record[]    = $this_directory_record;

   361             $directory_record_data = fread($getid3->fp, 1);

   362         }

   363         

   364         return $directory_record;

   365     }

   366 

   367 

   368 

   369     public static function ISOstripFilenameVersion($iso_filename) {

   370 

   371         // convert 'filename.ext;1' to 'filename.ext'

   372         if (!strstr($iso_filename, ';')) {

   373             return $iso_filename;

   374         }

   375         return substr($iso_filename, 0, strpos($iso_filename, ';'));

   376     }

   377 

   378 

   379 

   380     public static function ISOtimeText2UNIXtime($iso_time) {

   381 

   382         if (!(int)substr($iso_time, 0, 4)) {

   383             return false;

   384         }

   385         

   386         return gmmktime((int)substr($iso_time, 8, 2), (int)substr($iso_time, 10, 2), (int)substr($iso_time, 12, 2), (int)substr($iso_time, 4, 2), (int)substr($iso_time, 6, 2), (int)substr($iso_time, 0, 4));

   387     }

   388     

   389     

   390 

   391     public static function ISOtime2UNIXtime($iso_time) {

   392     

   393         // Represented by seven bytes:

   394         // 1: Number of years since 1900

   395         // 2: Month of the year from 1 to 12

   396         // 3: Day of the Month from 1 to 31

   397         // 4: Hour of the day from 0 to 23

   398         // 5: Minute of the hour from 0 to 59

   399         // 6: second of the minute from 0 to 59

   400         // 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)

   401 

   402         return gmmktime(ord($iso_time[3]), ord($iso_time[4]), ord($iso_time[5]), ord($iso_time[1]), ord($iso_time[2]), ord($iso_time[0]) + 1900);

   403     }

   404 

   405 

   406 

   407     public static function array_merge_clobber($array1, $array2) {

   408 

   409         // written by kcØhireability*com

   410         // taken from http://www.php.net/manual/en/function.array-merge-recursive.php

   411         

   412         if (!is_array($array1) || !is_array($array2)) {

   413             return false;

   414         }

   415         

   416         $newarray = $array1;

   417         foreach ($array2 as $key => $val) {

   418             if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {

   419                 $newarray[$key] = getid3_iso::array_merge_clobber($newarray[$key], $val);

   420             } else {

   421                 $newarray[$key] = $val;

   422             }

   423         }

   424         return $newarray;

   425     }

   426     

   427     

   428     

   429     public static function CreateDeepArray($array_path, $separator, $value) {

   430 

   431         // assigns $value to a nested array path:

   432         //   $foo = getid3_lib::CreateDeepArray('/path/to/my', '/', 'file.txt')

   433         // is the same as:

   434         //   $foo = array ('path'=>array('to'=>'array('my'=>array('file.txt'))));

   435         // or

   436         //   $foo['path']['to']['my'] = 'file.txt';

   437         

   438         while ($array_path{0} == $separator) {

   439             $array_path = substr($array_path, 1);

   440         }

   441         if (($pos = strpos($array_path, $separator)) !== false) {

   442             return array (substr($array_path, 0, $pos) => getid3_iso::CreateDeepArray(substr($array_path, $pos + 1), $separator, $value));

   443         }

   444         

   445         return array ($array_path => $value);

   446     }

   447 

   448 }

   449 

   450 ?>