[3318] | 1 | <?php |
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[3544] | 2 | ///////////////////////////////////////////////////////////////// |
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| 3 | /// getID3() by James Heinrich <info@getid3.org> // |
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| 4 | // available at http://getid3.sourceforge.net // |
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| 5 | // or http://www.getid3.org // |
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| 6 | ///////////////////////////////////////////////////////////////// |
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| 7 | // See readme.txt for more details // |
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| 8 | ///////////////////////////////////////////////////////////////// |
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| 9 | // // |
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| 10 | // module.misc.iso.php // |
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| 11 | // module for analyzing ISO files // |
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| 12 | // dependencies: NONE // |
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| 13 | // /// |
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| 14 | ///////////////////////////////////////////////////////////////// |
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[3318] | 15 | |
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| 16 | |
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[3544] | 17 | class getid3_iso |
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[3318] | 18 | { |
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| 19 | |
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[3544] | 20 | function getid3_iso($fd, &$ThisFileInfo) { |
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| 21 | $ThisFileInfo['fileformat'] = 'iso'; |
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[3318] | 22 | |
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[3544] | 23 | for ($i = 16; $i <= 19; $i++) { |
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| 24 | fseek($fd, 2048 * $i, SEEK_SET); |
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| 25 | $ISOheader = fread($fd, 2048); |
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| 26 | if (substr($ISOheader, 1, 5) == 'CD001') { |
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| 27 | switch (ord($ISOheader{0})) { |
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| 28 | case 1: |
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| 29 | $ThisFileInfo['iso']['primary_volume_descriptor']['offset'] = 2048 * $i; |
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| 30 | $this->ParsePrimaryVolumeDescriptor($ISOheader, $ThisFileInfo); |
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| 31 | break; |
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[3318] | 32 | |
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[3544] | 33 | case 2: |
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| 34 | $ThisFileInfo['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i; |
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| 35 | $this->ParseSupplementaryVolumeDescriptor($ISOheader, $ThisFileInfo); |
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| 36 | break; |
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[3318] | 37 | |
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[3544] | 38 | default: |
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| 39 | // skip |
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| 40 | break; |
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| 41 | } |
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| 42 | } |
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| 43 | } |
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[3318] | 44 | |
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[3544] | 45 | $this->ParsePathTable($fd, $ThisFileInfo); |
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[3318] | 46 | |
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[3544] | 47 | $ThisFileInfo['iso']['files'] = array(); |
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| 48 | foreach ($ThisFileInfo['iso']['path_table']['directories'] as $directorynum => $directorydata) { |
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[3318] | 49 | |
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[3544] | 50 | $ThisFileInfo['iso']['directories'][$directorynum] = $this->ParseDirectoryRecord($fd, $directorydata, $ThisFileInfo); |
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[3318] | 51 | |
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[3544] | 52 | } |
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[3318] | 53 | |
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[3544] | 54 | return true; |
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[3318] | 55 | |
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[3544] | 56 | } |
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[3318] | 57 | |
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| 58 | |
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[3544] | 59 | function ParsePrimaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo) { |
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| 60 | // ISO integer values are stored *BOTH* Little-Endian AND Big-Endian format!! |
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| 61 | // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field |
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[3318] | 62 | |
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[3544] | 63 | // shortcuts |
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| 64 | $ThisFileInfo['iso']['primary_volume_descriptor']['raw'] = array(); |
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| 65 | $thisfile_iso_primaryVD = &$ThisFileInfo['iso']['primary_volume_descriptor']; |
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| 66 | $thisfile_iso_primaryVD_raw = &$thisfile_iso_primaryVD['raw']; |
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[3318] | 67 | |
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[3544] | 68 | $thisfile_iso_primaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 0, 1)); |
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| 69 | $thisfile_iso_primaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5); |
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| 70 | if ($thisfile_iso_primaryVD_raw['standard_identifier'] != 'CD001') { |
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| 71 | $ThisFileInfo['error'][] = 'Expected "CD001" at offset ('.($thisfile_iso_primaryVD['offset'] + 1).'), found "'.$thisfile_iso_primaryVD_raw['standard_identifier'].'" instead'; |
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| 72 | unset($ThisFileInfo['fileformat']); |
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| 73 | unset($ThisFileInfo['iso']); |
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| 74 | return false; |
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| 75 | } |
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[3318] | 76 | |
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| 77 | |
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[3544] | 78 | $thisfile_iso_primaryVD_raw['volume_descriptor_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 6, 1)); |
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| 79 | //$thisfile_iso_primaryVD_raw['unused_1'] = substr($ISOheader, 7, 1); |
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| 80 | $thisfile_iso_primaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32); |
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| 81 | $thisfile_iso_primaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32); |
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| 82 | //$thisfile_iso_primaryVD_raw['unused_2'] = substr($ISOheader, 72, 8); |
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| 83 | $thisfile_iso_primaryVD_raw['volume_space_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 80, 4)); |
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| 84 | //$thisfile_iso_primaryVD_raw['unused_3'] = substr($ISOheader, 88, 32); |
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| 85 | $thisfile_iso_primaryVD_raw['volume_set_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 120, 2)); |
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| 86 | $thisfile_iso_primaryVD_raw['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 124, 2)); |
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| 87 | $thisfile_iso_primaryVD_raw['logical_block_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 128, 2)); |
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| 88 | $thisfile_iso_primaryVD_raw['path_table_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 132, 4)); |
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| 89 | $thisfile_iso_primaryVD_raw['path_table_l_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 140, 2)); |
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| 90 | $thisfile_iso_primaryVD_raw['path_table_l_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 144, 2)); |
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| 91 | $thisfile_iso_primaryVD_raw['path_table_m_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 148, 2)); |
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| 92 | $thisfile_iso_primaryVD_raw['path_table_m_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 152, 2)); |
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| 93 | $thisfile_iso_primaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34); |
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| 94 | $thisfile_iso_primaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128); |
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| 95 | $thisfile_iso_primaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128); |
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| 96 | $thisfile_iso_primaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128); |
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| 97 | $thisfile_iso_primaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128); |
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| 98 | $thisfile_iso_primaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37); |
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| 99 | $thisfile_iso_primaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37); |
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| 100 | $thisfile_iso_primaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37); |
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| 101 | $thisfile_iso_primaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17); |
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| 102 | $thisfile_iso_primaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17); |
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| 103 | $thisfile_iso_primaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17); |
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| 104 | $thisfile_iso_primaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17); |
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| 105 | $thisfile_iso_primaryVD_raw['file_structure_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 881, 1)); |
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| 106 | //$thisfile_iso_primaryVD_raw['unused_4'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 882, 1)); |
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| 107 | $thisfile_iso_primaryVD_raw['application_data'] = substr($ISOheader, 883, 512); |
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| 108 | //$thisfile_iso_primaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653); |
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[3318] | 109 | |
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[3544] | 110 | $thisfile_iso_primaryVD['system_identifier'] = trim($thisfile_iso_primaryVD_raw['system_identifier']); |
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| 111 | $thisfile_iso_primaryVD['volume_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_identifier']); |
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| 112 | $thisfile_iso_primaryVD['volume_set_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_set_identifier']); |
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| 113 | $thisfile_iso_primaryVD['publisher_identifier'] = trim($thisfile_iso_primaryVD_raw['publisher_identifier']); |
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| 114 | $thisfile_iso_primaryVD['data_preparer_identifier'] = trim($thisfile_iso_primaryVD_raw['data_preparer_identifier']); |
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| 115 | $thisfile_iso_primaryVD['application_identifier'] = trim($thisfile_iso_primaryVD_raw['application_identifier']); |
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| 116 | $thisfile_iso_primaryVD['copyright_file_identifier'] = trim($thisfile_iso_primaryVD_raw['copyright_file_identifier']); |
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| 117 | $thisfile_iso_primaryVD['abstract_file_identifier'] = trim($thisfile_iso_primaryVD_raw['abstract_file_identifier']); |
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| 118 | $thisfile_iso_primaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_primaryVD_raw['bibliographic_file_identifier']); |
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| 119 | $thisfile_iso_primaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_creation_date_time']); |
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| 120 | $thisfile_iso_primaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_modification_date_time']); |
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| 121 | $thisfile_iso_primaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_expiration_date_time']); |
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| 122 | $thisfile_iso_primaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_effective_date_time']); |
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[3318] | 123 | |
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[3544] | 124 | if (($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048) > $ThisFileInfo['filesize']) { |
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| 125 | $ThisFileInfo['error'][] = 'Volume Space Size ('.($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$ThisFileInfo['filesize'].' bytes) (truncated file?)'; |
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| 126 | } |
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[3318] | 127 | |
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[3544] | 128 | return true; |
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| 129 | } |
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[3318] | 130 | |
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| 131 | |
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[3544] | 132 | function ParseSupplementaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo) { |
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| 133 | // ISO integer values are stored Both-Endian format!! |
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| 134 | // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field |
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[3318] | 135 | |
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[3544] | 136 | // shortcuts |
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| 137 | $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw'] = array(); |
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| 138 | $thisfile_iso_supplementaryVD = &$ThisFileInfo['iso']['supplementary_volume_descriptor']; |
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| 139 | $thisfile_iso_supplementaryVD_raw = &$thisfile_iso_supplementaryVD['raw']; |
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[3318] | 140 | |
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[3544] | 141 | $thisfile_iso_supplementaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 0, 1)); |
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| 142 | $thisfile_iso_supplementaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5); |
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| 143 | if ($thisfile_iso_supplementaryVD_raw['standard_identifier'] != 'CD001') { |
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| 144 | $ThisFileInfo['error'][] = 'Expected "CD001" at offset ('.($thisfile_iso_supplementaryVD['offset'] + 1).'), found "'.$thisfile_iso_supplementaryVD_raw['standard_identifier'].'" instead'; |
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| 145 | unset($ThisFileInfo['fileformat']); |
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| 146 | unset($ThisFileInfo['iso']); |
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| 147 | return false; |
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| 148 | } |
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[3318] | 149 | |
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[3544] | 150 | $thisfile_iso_supplementaryVD_raw['volume_descriptor_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 6, 1)); |
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| 151 | //$thisfile_iso_supplementaryVD_raw['unused_1'] = substr($ISOheader, 7, 1); |
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| 152 | $thisfile_iso_supplementaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32); |
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| 153 | $thisfile_iso_supplementaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32); |
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| 154 | //$thisfile_iso_supplementaryVD_raw['unused_2'] = substr($ISOheader, 72, 8); |
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| 155 | $thisfile_iso_supplementaryVD_raw['volume_space_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 80, 4)); |
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| 156 | if ($thisfile_iso_supplementaryVD_raw['volume_space_size'] == 0) { |
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| 157 | // Supplementary Volume Descriptor not used |
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| 158 | //unset($thisfile_iso_supplementaryVD); |
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| 159 | //return false; |
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| 160 | } |
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[3318] | 161 | |
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[3544] | 162 | //$thisfile_iso_supplementaryVD_raw['unused_3'] = substr($ISOheader, 88, 32); |
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| 163 | $thisfile_iso_supplementaryVD_raw['volume_set_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 120, 2)); |
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| 164 | $thisfile_iso_supplementaryVD_raw['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 124, 2)); |
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| 165 | $thisfile_iso_supplementaryVD_raw['logical_block_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 128, 2)); |
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| 166 | $thisfile_iso_supplementaryVD_raw['path_table_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 132, 4)); |
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| 167 | $thisfile_iso_supplementaryVD_raw['path_table_l_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 140, 2)); |
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| 168 | $thisfile_iso_supplementaryVD_raw['path_table_l_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 144, 2)); |
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| 169 | $thisfile_iso_supplementaryVD_raw['path_table_m_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 148, 2)); |
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| 170 | $thisfile_iso_supplementaryVD_raw['path_table_m_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 152, 2)); |
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| 171 | $thisfile_iso_supplementaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34); |
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| 172 | $thisfile_iso_supplementaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128); |
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| 173 | $thisfile_iso_supplementaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128); |
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| 174 | $thisfile_iso_supplementaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128); |
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| 175 | $thisfile_iso_supplementaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128); |
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| 176 | $thisfile_iso_supplementaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37); |
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| 177 | $thisfile_iso_supplementaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37); |
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| 178 | $thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37); |
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| 179 | $thisfile_iso_supplementaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17); |
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| 180 | $thisfile_iso_supplementaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17); |
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| 181 | $thisfile_iso_supplementaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17); |
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| 182 | $thisfile_iso_supplementaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17); |
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| 183 | $thisfile_iso_supplementaryVD_raw['file_structure_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 881, 1)); |
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| 184 | //$thisfile_iso_supplementaryVD_raw['unused_4'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 882, 1)); |
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| 185 | $thisfile_iso_supplementaryVD_raw['application_data'] = substr($ISOheader, 883, 512); |
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| 186 | //$thisfile_iso_supplementaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653); |
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[3318] | 187 | |
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[3544] | 188 | $thisfile_iso_supplementaryVD['system_identifier'] = trim($thisfile_iso_supplementaryVD_raw['system_identifier']); |
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| 189 | $thisfile_iso_supplementaryVD['volume_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_identifier']); |
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| 190 | $thisfile_iso_supplementaryVD['volume_set_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_set_identifier']); |
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| 191 | $thisfile_iso_supplementaryVD['publisher_identifier'] = trim($thisfile_iso_supplementaryVD_raw['publisher_identifier']); |
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| 192 | $thisfile_iso_supplementaryVD['data_preparer_identifier'] = trim($thisfile_iso_supplementaryVD_raw['data_preparer_identifier']); |
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| 193 | $thisfile_iso_supplementaryVD['application_identifier'] = trim($thisfile_iso_supplementaryVD_raw['application_identifier']); |
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| 194 | $thisfile_iso_supplementaryVD['copyright_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['copyright_file_identifier']); |
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| 195 | $thisfile_iso_supplementaryVD['abstract_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['abstract_file_identifier']); |
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| 196 | $thisfile_iso_supplementaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier']); |
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| 197 | $thisfile_iso_supplementaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_creation_date_time']); |
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| 198 | $thisfile_iso_supplementaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_modification_date_time']); |
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| 199 | $thisfile_iso_supplementaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_expiration_date_time']); |
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| 200 | $thisfile_iso_supplementaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_effective_date_time']); |
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[3318] | 201 | |
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[3544] | 202 | if (($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']) > $ThisFileInfo['filesize']) { |
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| 203 | $ThisFileInfo['error'][] = 'Volume Space Size ('.($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']).' bytes) is larger than the file size ('.$ThisFileInfo['filesize'].' bytes) (truncated file?)'; |
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| 204 | } |
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[3318] | 205 | |
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[3544] | 206 | return true; |
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| 207 | } |
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[3318] | 208 | |
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| 209 | |
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[3544] | 210 | function ParsePathTable($fd, &$ThisFileInfo) { |
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| 211 | if (!isset($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) { |
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| 212 | return false; |
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| 213 | } |
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| 214 | if (isset($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'])) { |
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| 215 | $PathTableLocation = $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']; |
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| 216 | $PathTableSize = $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_size']; |
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| 217 | $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode |
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| 218 | } else { |
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| 219 | $PathTableLocation = $ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_location']; |
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| 220 | $PathTableSize = $ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_size']; |
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| 221 | $TextEncoding = 'ISO-8859-1'; // Latin-1 |
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| 222 | } |
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[3318] | 223 | |
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[3544] | 224 | if (($PathTableLocation * 2048) > $ThisFileInfo['filesize']) { |
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| 225 | $ThisFileInfo['error'][] = 'Path Table Location specifies an offset ('.($PathTableLocation * 2048).') beyond the end-of-file ('.$ThisFileInfo['filesize'].')'; |
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| 226 | return false; |
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| 227 | } |
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[3318] | 228 | |
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[3544] | 229 | $ThisFileInfo['iso']['path_table']['offset'] = $PathTableLocation * 2048; |
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| 230 | fseek($fd, $ThisFileInfo['iso']['path_table']['offset'], SEEK_SET); |
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| 231 | $ThisFileInfo['iso']['path_table']['raw'] = fread($fd, $PathTableSize); |
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[3318] | 232 | |
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[3544] | 233 | $offset = 0; |
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| 234 | $pathcounter = 1; |
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| 235 | while ($offset < $PathTableSize) { |
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| 236 | // shortcut |
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| 237 | $ThisFileInfo['iso']['path_table']['directories'][$pathcounter] = array(); |
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| 238 | $thisfile_iso_pathtable_directories_current = &$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]; |
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[3318] | 239 | |
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[3544] | 240 | $thisfile_iso_pathtable_directories_current['length'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 1)); |
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| 241 | $offset += 1; |
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| 242 | $thisfile_iso_pathtable_directories_current['extended_length'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 1)); |
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| 243 | $offset += 1; |
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| 244 | $thisfile_iso_pathtable_directories_current['location_logical'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 4)); |
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| 245 | $offset += 4; |
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| 246 | $thisfile_iso_pathtable_directories_current['parent_directory'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 2)); |
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| 247 | $offset += 2; |
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| 248 | $thisfile_iso_pathtable_directories_current['name'] = substr($ThisFileInfo['iso']['path_table']['raw'], $offset, $thisfile_iso_pathtable_directories_current['length']); |
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| 249 | $offset += $thisfile_iso_pathtable_directories_current['length'] + ($thisfile_iso_pathtable_directories_current['length'] % 2); |
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[3318] | 250 | |
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[3544] | 251 | $thisfile_iso_pathtable_directories_current['name_ascii'] = getid3_lib::iconv_fallback($TextEncoding, $ThisFileInfo['encoding'], $thisfile_iso_pathtable_directories_current['name']); |
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[3318] | 252 | |
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[3544] | 253 | $thisfile_iso_pathtable_directories_current['location_bytes'] = $thisfile_iso_pathtable_directories_current['location_logical'] * 2048; |
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| 254 | if ($pathcounter == 1) { |
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| 255 | $thisfile_iso_pathtable_directories_current['full_path'] = '/'; |
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| 256 | } else { |
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| 257 | $thisfile_iso_pathtable_directories_current['full_path'] = $ThisFileInfo['iso']['path_table']['directories'][$thisfile_iso_pathtable_directories_current['parent_directory']]['full_path'].$thisfile_iso_pathtable_directories_current['name_ascii'].'/'; |
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| 258 | } |
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| 259 | $FullPathArray[] = $thisfile_iso_pathtable_directories_current['full_path']; |
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[3318] | 260 | |
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[3544] | 261 | $pathcounter++; |
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| 262 | } |
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[3318] | 263 | |
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[3544] | 264 | return true; |
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| 265 | } |
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[3318] | 266 | |
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| 267 | |
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[3544] | 268 | function ParseDirectoryRecord(&$fd, $directorydata, &$ThisFileInfo) { |
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| 269 | if (isset($ThisFileInfo['iso']['supplementary_volume_descriptor'])) { |
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| 270 | $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode |
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| 271 | } else { |
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| 272 | $TextEncoding = 'ISO-8859-1'; // Latin-1 |
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| 273 | } |
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[3318] | 274 | |
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[3544] | 275 | fseek($fd, $directorydata['location_bytes'], SEEK_SET); |
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| 276 | $DirectoryRecordData = fread($fd, 1); |
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[3318] | 277 | |
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[3544] | 278 | while (ord($DirectoryRecordData{0}) > 33) { |
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[3318] | 279 | |
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[3544] | 280 | $DirectoryRecordData .= fread($fd, ord($DirectoryRecordData{0}) - 1); |
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[3318] | 281 | |
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[3544] | 282 | $ThisDirectoryRecord['raw']['length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 0, 1)); |
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| 283 | $ThisDirectoryRecord['raw']['extended_attribute_length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 1, 1)); |
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| 284 | $ThisDirectoryRecord['raw']['offset_logical'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 2, 4)); |
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| 285 | $ThisDirectoryRecord['raw']['filesize'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 10, 4)); |
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| 286 | $ThisDirectoryRecord['raw']['recording_date_time'] = substr($DirectoryRecordData, 18, 7); |
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| 287 | $ThisDirectoryRecord['raw']['file_flags'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 25, 1)); |
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| 288 | $ThisDirectoryRecord['raw']['file_unit_size'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 26, 1)); |
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| 289 | $ThisDirectoryRecord['raw']['interleave_gap_size'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 27, 1)); |
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| 290 | $ThisDirectoryRecord['raw']['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 28, 2)); |
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| 291 | $ThisDirectoryRecord['raw']['file_identifier_length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 32, 1)); |
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| 292 | $ThisDirectoryRecord['raw']['file_identifier'] = substr($DirectoryRecordData, 33, $ThisDirectoryRecord['raw']['file_identifier_length']); |
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[3318] | 293 | |
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[3544] | 294 | $ThisDirectoryRecord['file_identifier_ascii'] = getid3_lib::iconv_fallback($TextEncoding, $ThisFileInfo['encoding'], $ThisDirectoryRecord['raw']['file_identifier']); |
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[3318] | 295 | |
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[3544] | 296 | $ThisDirectoryRecord['filesize'] = $ThisDirectoryRecord['raw']['filesize']; |
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| 297 | $ThisDirectoryRecord['offset_bytes'] = $ThisDirectoryRecord['raw']['offset_logical'] * 2048; |
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| 298 | $ThisDirectoryRecord['file_flags']['hidden'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x01); |
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| 299 | $ThisDirectoryRecord['file_flags']['directory'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x02); |
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| 300 | $ThisDirectoryRecord['file_flags']['associated'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x04); |
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| 301 | $ThisDirectoryRecord['file_flags']['extended'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x08); |
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| 302 | $ThisDirectoryRecord['file_flags']['permissions'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x10); |
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| 303 | $ThisDirectoryRecord['file_flags']['multiple'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x80); |
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| 304 | $ThisDirectoryRecord['recording_timestamp'] = $this->ISOtime2UNIXtime($ThisDirectoryRecord['raw']['recording_date_time']); |
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[3318] | 305 | |
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[3544] | 306 | if ($ThisDirectoryRecord['file_flags']['directory']) { |
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| 307 | $ThisDirectoryRecord['filename'] = $directorydata['full_path']; |
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| 308 | } else { |
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| 309 | $ThisDirectoryRecord['filename'] = $directorydata['full_path'].$this->ISOstripFilenameVersion($ThisDirectoryRecord['file_identifier_ascii']); |
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| 310 | $ThisFileInfo['iso']['files'] = getid3_lib::array_merge_clobber($ThisFileInfo['iso']['files'], getid3_lib::CreateDeepArray($ThisDirectoryRecord['filename'], '/', $ThisDirectoryRecord['filesize'])); |
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| 311 | } |
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[3318] | 312 | |
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[3544] | 313 | $DirectoryRecord[] = $ThisDirectoryRecord; |
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| 314 | $DirectoryRecordData = fread($fd, 1); |
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| 315 | } |
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[3318] | 316 | |
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[3544] | 317 | return $DirectoryRecord; |
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| 318 | } |
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[3318] | 319 | |
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[3544] | 320 | function ISOstripFilenameVersion($ISOfilename) { |
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| 321 | // convert 'filename.ext;1' to 'filename.ext' |
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| 322 | if (!strstr($ISOfilename, ';')) { |
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| 323 | return $ISOfilename; |
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| 324 | } else { |
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| 325 | return substr($ISOfilename, 0, strpos($ISOfilename, ';')); |
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| 326 | } |
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| 327 | } |
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[3318] | 328 | |
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[3544] | 329 | function ISOtimeText2UNIXtime($ISOtime) { |
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[3318] | 330 | |
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[3544] | 331 | $UNIXyear = (int) substr($ISOtime, 0, 4); |
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| 332 | $UNIXmonth = (int) substr($ISOtime, 4, 2); |
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| 333 | $UNIXday = (int) substr($ISOtime, 6, 2); |
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| 334 | $UNIXhour = (int) substr($ISOtime, 8, 2); |
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| 335 | $UNIXminute = (int) substr($ISOtime, 10, 2); |
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| 336 | $UNIXsecond = (int) substr($ISOtime, 12, 2); |
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[3318] | 337 | |
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[3544] | 338 | if (!$UNIXyear) { |
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| 339 | return false; |
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| 340 | } |
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| 341 | return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear); |
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| 342 | } |
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[3318] | 343 | |
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[3544] | 344 | function ISOtime2UNIXtime($ISOtime) { |
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| 345 | // Represented by seven bytes: |
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| 346 | // 1: Number of years since 1900 |
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| 347 | // 2: Month of the year from 1 to 12 |
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| 348 | // 3: Day of the Month from 1 to 31 |
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| 349 | // 4: Hour of the day from 0 to 23 |
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| 350 | // 5: Minute of the hour from 0 to 59 |
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| 351 | // 6: second of the minute from 0 to 59 |
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| 352 | // 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East) |
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[3318] | 353 | |
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[3544] | 354 | $UNIXyear = ord($ISOtime{0}) + 1900; |
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| 355 | $UNIXmonth = ord($ISOtime{1}); |
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| 356 | $UNIXday = ord($ISOtime{2}); |
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| 357 | $UNIXhour = ord($ISOtime{3}); |
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| 358 | $UNIXminute = ord($ISOtime{4}); |
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| 359 | $UNIXsecond = ord($ISOtime{5}); |
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| 360 | $GMToffset = $this->TwosCompliment2Decimal(ord($ISOtime{5})); |
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[3318] | 361 | |
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[3544] | 362 | return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear); |
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| 363 | } |
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[3318] | 364 | |
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[3544] | 365 | function TwosCompliment2Decimal($BinaryValue) { |
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| 366 | // http://sandbox.mc.edu/~bennet/cs110/tc/tctod.html |
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| 367 | // First check if the number is negative or positive by looking at the sign bit. |
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| 368 | // If it is positive, simply convert it to decimal. |
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| 369 | // If it is negative, make it positive by inverting the bits and adding one. |
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| 370 | // Then, convert the result to decimal. |
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| 371 | // The negative of this number is the value of the original binary. |
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[3318] | 372 | |
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[3544] | 373 | if ($BinaryValue & 0x80) { |
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| 374 | |
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| 375 | // negative number |
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| 376 | return (0 - ((~$BinaryValue & 0xFF) + 1)); |
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| 377 | } else { |
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| 378 | // positive number |
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| 379 | return $BinaryValue; |
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| 380 | } |
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| 381 | } |
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| 382 | |
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| 383 | |
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[3318] | 384 | } |
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| 385 | |
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| 386 | ?> |
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