1 | <?php |
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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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15 | |
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16 | |
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17 | class getid3_iso |
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18 | { |
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19 | |
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20 | function getid3_iso($fd, &$ThisFileInfo) { |
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21 | $ThisFileInfo['fileformat'] = 'iso'; |
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22 | |
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23 | for ($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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32 | |
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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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37 | |
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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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44 | |
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45 | $this->ParsePathTable($fd, $ThisFileInfo); |
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46 | |
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47 | $ThisFileInfo['iso']['files'] = array(); |
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48 | foreach ($ThisFileInfo['iso']['path_table']['directories'] as $directorynum => $directorydata) { |
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49 | |
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50 | $ThisFileInfo['iso']['directories'][$directorynum] = $this->ParseDirectoryRecord($fd, $directorydata, $ThisFileInfo); |
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51 | |
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52 | } |
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53 | |
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54 | return true; |
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55 | |
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56 | } |
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57 | |
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58 | |
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59 | function ParsePrimaryVolumeDescriptor(&$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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62 | |
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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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67 | |
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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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76 | |
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77 | |
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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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109 | |
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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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123 | |
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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 ('.$ThisFileInfo['filesize'].' bytes) (truncated file?)'; |
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126 | } |
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127 | |
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128 | return true; |
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129 | } |
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130 | |
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131 | |
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132 | function ParseSupplementaryVolumeDescriptor(&$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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135 | |
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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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140 | |
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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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149 | |
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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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161 | |
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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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187 | |
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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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201 | |
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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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205 | |
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206 | return true; |
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207 | } |
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208 | |
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209 | |
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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 | $TextEncoding = 'ISO-8859-1'; // Latin-1 |
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222 | } |
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223 | |
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224 | if (($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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228 | |
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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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232 | |
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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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239 | |
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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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250 | |
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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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252 | |
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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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260 | |
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261 | $pathcounter++; |
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262 | } |
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263 | |
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264 | return true; |
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265 | } |
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266 | |
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267 | |
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268 | function ParseDirectoryRecord(&$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 | $TextEncoding = 'ISO-8859-1'; // Latin-1 |
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273 | } |
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274 | |
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275 | fseek($fd, $directorydata['location_bytes'], SEEK_SET); |
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276 | $DirectoryRecordData = fread($fd, 1); |
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277 | |
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278 | while (ord($DirectoryRecordData{0}) > 33) { |
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279 | |
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280 | $DirectoryRecordData .= fread($fd, ord($DirectoryRecordData{0}) - 1); |
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281 | |
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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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293 | |
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294 | $ThisDirectoryRecord['file_identifier_ascii'] = getid3_lib::iconv_fallback($TextEncoding, $ThisFileInfo['encoding'], $ThisDirectoryRecord['raw']['file_identifier']); |
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295 | |
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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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305 | |
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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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312 | |
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313 | $DirectoryRecord[] = $ThisDirectoryRecord; |
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314 | $DirectoryRecordData = fread($fd, 1); |
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315 | } |
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316 | |
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317 | return $DirectoryRecord; |
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318 | } |
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319 | |
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320 | function ISOstripFilenameVersion($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($ISOfilename, ';')); |
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326 | } |
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327 | } |
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328 | |
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329 | function ISOtimeText2UNIXtime($ISOtime) { |
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330 | |
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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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337 | |
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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, $UNIXyear); |
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342 | } |
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343 | |
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344 | function ISOtime2UNIXtime($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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353 | |
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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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361 | |
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362 | return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear); |
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363 | } |
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364 | |
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365 | function TwosCompliment2Decimal($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. |
---|
370 | // Then, convert the result to decimal. |
---|
371 | // The negative of this number is the value of the original binary. |
---|
372 | |
---|
373 | if ($BinaryValue & 0x80) { |
---|
374 | |
---|
375 | // negative number |
---|
376 | return (0 - ((~$BinaryValue & 0xFF) + 1)); |
---|
377 | } else { |
---|
378 | // positive number |
---|
379 | return $BinaryValue; |
---|
380 | } |
---|
381 | } |
---|
382 | |
---|
383 | |
---|
384 | } |
---|
385 | |
---|
386 | ?> |
---|