<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net ///
// or http://www.getid3.org ///
/////////////////////////////////////////////////////////////////
// //
// getid3.iso.php - part of getID3() //
// See getid3.readme.txt for more details //
// //
/////////////////////////////////////////////////////////////////
function getISOHeaderFilepointer($fd, &$ThisFileInfo) {
$ThisFileInfo['fileformat'] = 'iso';
for ($i = 16; $i <= 19; $i++) {
fseek($fd, 2048 * $i, SEEK_SET);
$ISOheader = fread($fd, 2048);
if (substr($ISOheader, 1, 5) == 'CD001') {
switch (ord($ISOheader{0})) {
case 1:
$ThisFileInfo['iso']['primary_volume_descriptor']['offset'] = 2048 * $i;
ParsePrimaryVolumeDescriptor($ISOheader, $ThisFileInfo);
break;
case 2:
$ThisFileInfo['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i;
ParseSupplementaryVolumeDescriptor($ISOheader, $ThisFileInfo);
break;
default:
// skip
break;
}
}
}
ParsePathTable($fd, $ThisFileInfo);
$ThisFileInfo['iso']['files'] = array();
foreach ($ThisFileInfo['iso']['path_table']['directories'] as $directorynum => $directorydata) {
$ThisFileInfo['iso']['directories'][$directorynum] = ParseDirectoryRecord($fd, $directorydata, $ThisFileInfo);
}
return true;
}
function ParsePrimaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo) {
// ISO integer values are stored *BOTH* Little-Endian AND Big-Endian format!!
// ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_descriptor_type'] = LittleEndian2Int(substr($ISOheader, 0, 1));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['standard_identifier'] = substr($ISOheader, 1, 5);
if ($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['standard_identifier'] != 'CD001') {
$ThisFileInfo['error'] .= "\n".'Expected "CD001" at offset ('.($ThisFileInfo['iso']['primary_volume_descriptor']['offset'] + 1).'), found "'.$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['standard_identifier'].'" instead';
unset($ThisFileInfo['fileformat']);
unset($ThisFileInfo['iso']);
return false;
}
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_descriptor_version'] = LittleEndian2Int(substr($ISOheader, 6, 1));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['unused_1'] = substr($ISOheader, 7, 1);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['system_identifier'] = substr($ISOheader, 8, 32);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_identifier'] = substr($ISOheader, 40, 32);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['unused_2'] = substr($ISOheader, 72, 8);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_space_size'] = LittleEndian2Int(substr($ISOheader, 80, 4));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['unused_3'] = substr($ISOheader, 88, 32);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_set_size'] = LittleEndian2Int(substr($ISOheader, 120, 2));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_sequence_number'] = LittleEndian2Int(substr($ISOheader, 124, 2));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['logical_block_size'] = LittleEndian2Int(substr($ISOheader, 128, 2));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_size'] = LittleEndian2Int(substr($ISOheader, 132, 4));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_location'] = LittleEndian2Int(substr($ISOheader, 140, 2));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_opt_location'] = LittleEndian2Int(substr($ISOheader, 144, 2));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_m_location'] = LittleEndian2Int(substr($ISOheader, 148, 2));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_m_opt_location'] = LittleEndian2Int(substr($ISOheader, 152, 2));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['root_directory_record'] = substr($ISOheader, 156, 34);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_set_identifier'] = substr($ISOheader, 190, 128);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['publisher_identifier'] = substr($ISOheader, 318, 128);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['data_preparer_identifier'] = substr($ISOheader, 446, 128);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['application_identifier'] = substr($ISOheader, 574, 128);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['copyright_file_identifier'] = substr($ISOheader, 702, 37);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['abstract_file_identifier'] = substr($ISOheader, 739, 37);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_creation_date_time'] = substr($ISOheader, 813, 17);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_modification_date_time'] = substr($ISOheader, 830, 17);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_effective_date_time'] = substr($ISOheader, 864, 17);
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['file_structure_version'] = LittleEndian2Int(substr($ISOheader, 881, 1));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['unused_4'] = LittleEndian2Int(substr($ISOheader, 882, 1));
$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['application_data'] = substr($ISOheader, 883, 512);
//$ThisFileInfo['iso']['primary_volume_descriptor']['raw']['unused_5'] = substr($ISOheader, 1395, 653);
$ThisFileInfo['iso']['primary_volume_descriptor']['system_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['system_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['volume_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['volume_set_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_set_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['publisher_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['publisher_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['data_preparer_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['data_preparer_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['application_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['application_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['copyright_file_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['copyright_file_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['abstract_file_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['abstract_file_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['bibliographic_file_identifier'] = trim($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['bibliographic_file_identifier']);
$ThisFileInfo['iso']['primary_volume_descriptor']['volume_creation_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_creation_date_time']);
$ThisFileInfo['iso']['primary_volume_descriptor']['volume_modification_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_modification_date_time']);
$ThisFileInfo['iso']['primary_volume_descriptor']['volume_expiration_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_expiration_date_time']);
$ThisFileInfo['iso']['primary_volume_descriptor']['volume_effective_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_effective_date_time']);
if (($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_space_size'] * 2048) > $ThisFileInfo['filesize']) {
$ThisFileInfo['error'] .= "\n".'Volume Space Size ('.($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$ThisFileInfo['filesize'].' bytes) (truncated file?)';
}
return true;
}
function ParseSupplementaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo) {
// ISO integer values are stored Both-Endian format!!
// ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_descriptor_type'] = LittleEndian2Int(substr($ISOheader, 0, 1));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['standard_identifier'] = substr($ISOheader, 1, 5);
if ($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['standard_identifier'] != 'CD001') {
$ThisFileInfo['error'] .= "\n".'Expected "CD001" at offset ('.($ThisFileInfo['iso']['supplementary_volume_descriptor']['offset'] + 1).'), found "'.$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['standard_identifier'].'" instead';
unset($ThisFileInfo['fileformat']);
unset($ThisFileInfo['iso']);
return false;
}
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_descriptor_version'] = LittleEndian2Int(substr($ISOheader, 6, 1));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['unused_1'] = substr($ISOheader, 7, 1);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['system_identifier'] = substr($ISOheader, 8, 32);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_identifier'] = substr($ISOheader, 40, 32);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['unused_2'] = substr($ISOheader, 72, 8);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_space_size'] = LittleEndian2Int(substr($ISOheader, 80, 4));
if ($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_space_size'] == 0) {
// Supplementary Volume Descriptor not used
// unset($ThisFileInfo['iso']['supplementary_volume_descriptor']);
// return false;
}
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['unused_3'] = substr($ISOheader, 88, 32);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_set_size'] = LittleEndian2Int(substr($ISOheader, 120, 2));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_sequence_number'] = LittleEndian2Int(substr($ISOheader, 124, 2));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['logical_block_size'] = LittleEndian2Int(substr($ISOheader, 128, 2));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_size'] = LittleEndian2Int(substr($ISOheader, 132, 4));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'] = LittleEndian2Int(substr($ISOheader, 140, 2));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_opt_location'] = LittleEndian2Int(substr($ISOheader, 144, 2));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_m_location'] = LittleEndian2Int(substr($ISOheader, 148, 2));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_m_opt_location'] = LittleEndian2Int(substr($ISOheader, 152, 2));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['root_directory_record'] = substr($ISOheader, 156, 34);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_set_identifier'] = substr($ISOheader, 190, 128);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['publisher_identifier'] = substr($ISOheader, 318, 128);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['data_preparer_identifier'] = substr($ISOheader, 446, 128);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['application_identifier'] = substr($ISOheader, 574, 128);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['copyright_file_identifier'] = substr($ISOheader, 702, 37);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['abstract_file_identifier'] = substr($ISOheader, 739, 37);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_creation_date_time'] = substr($ISOheader, 813, 17);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_modification_date_time'] = substr($ISOheader, 830, 17);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_effective_date_time'] = substr($ISOheader, 864, 17);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['file_structure_version'] = LittleEndian2Int(substr($ISOheader, 881, 1));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['unused_4'] = LittleEndian2Int(substr($ISOheader, 882, 1));
$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['application_data'] = substr($ISOheader, 883, 512);
//$ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['unused_5'] = substr($ISOheader, 1395, 653);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['system_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['system_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['volume_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['volume_set_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_set_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['publisher_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['publisher_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['data_preparer_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['data_preparer_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['application_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['application_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['copyright_file_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['copyright_file_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['abstract_file_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['abstract_file_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['bibliographic_file_identifier'] = trim($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['bibliographic_file_identifier']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['volume_creation_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_creation_date_time']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['volume_modification_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_modification_date_time']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['volume_expiration_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_expiration_date_time']);
$ThisFileInfo['iso']['supplementary_volume_descriptor']['volume_effective_date_time'] = ISOtimeText2UNIXtime($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_effective_date_time']);
if (($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_space_size'] * $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['logical_block_size']) > $ThisFileInfo['filesize']) {
$ThisFileInfo['error'] .= "\n".'Volume Space Size ('.($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['volume_space_size'] * $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['logical_block_size']).' bytes) is larger than the file size ('.$ThisFileInfo['filesize'].' bytes) (truncated file?)';
}
return true;
}
function ParsePathTable($fd, &$ThisFileInfo) {
if (!isset($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) {
return false;
}
if (isset($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'])) {
$PathTableLocation = $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'];
$PathTableSize = $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_size'];
$TextEncoding = 255; // Big-Endian Unicode
} else {
$PathTableLocation = $ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_location'];
$PathTableSize = $ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_size'];
$TextEncoding = 0; // ASCII
}
if (($PathTableLocation * 2048) > $ThisFileInfo['filesize']) {
$ThisFileInfo['error'] .= "\n".'Path Table Location specifies an offset ('.($PathTableLocation * 2048).') beyond the end-of-file ('.$ThisFileInfo['filesize'].')';
return false;
}
$ThisFileInfo['iso']['path_table']['offset'] = $PathTableLocation * 2048;
fseek($fd, $ThisFileInfo['iso']['path_table']['offset'], SEEK_SET);
$ThisFileInfo['iso']['path_table']['raw'] = fread($fd, $PathTableSize);
$offset = 0;
$pathcounter = 1;
while ($offset < $PathTableSize) {
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['length'] = LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 1));
$offset += 1;
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['extended_length'] = LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 1));
$offset += 1;
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['location_logical'] = LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 4));
$offset += 4;
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['parent_directory'] = LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 2));
$offset += 2;
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['name'] = substr($ThisFileInfo['iso']['path_table']['raw'], $offset, $ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['length']);
$offset += $ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['length'] + ($ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['length'] % 2);
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['name_ascii'] = RoughTranslateUnicodeToASCII($ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['name'], $TextEncoding);
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['location_bytes'] = $ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['location_logical'] * 2048;
if ($pathcounter == 1) {
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['full_path'] = '/';
} else {
$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['full_path'] = $ThisFileInfo['iso']['path_table']['directories'][$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['parent_directory']]['full_path'].$ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['name_ascii'].'/';
}
$FullPathArray[] = $ThisFileInfo['iso']['path_table']['directories'][$pathcounter]['full_path'];
$pathcounter++;
}
return true;
}
function ParseDirectoryRecord(&$fd, $directorydata, &$ThisFileInfo) {
if (isset($ThisFileInfo['iso']['supplementary_volume_descriptor'])) {
$TextEncoding = 255; // Big-Endian Unicode
} else {
$TextEncoding = 0; // ASCII
}
fseek($fd, $directorydata['location_bytes'], SEEK_SET);
$DirectoryRecordData = fread($fd, 1);
while (ord($DirectoryRecordData{0}) > 33) {
$DirectoryRecordData .= fread($fd, ord($DirectoryRecordData{0}) - 1);
$ThisDirectoryRecord['raw']['length'] = LittleEndian2Int(substr($DirectoryRecordData, 0, 1));
$ThisDirectoryRecord['raw']['extended_attribute_length'] = LittleEndian2Int(substr($DirectoryRecordData, 1, 1));
$ThisDirectoryRecord['raw']['offset_logical'] = LittleEndian2Int(substr($DirectoryRecordData, 2, 4));
$ThisDirectoryRecord['raw']['filesize'] = LittleEndian2Int(substr($DirectoryRecordData, 10, 4));
$ThisDirectoryRecord['raw']['recording_date_time'] = substr($DirectoryRecordData, 18, 7);
$ThisDirectoryRecord['raw']['file_flags'] = LittleEndian2Int(substr($DirectoryRecordData, 25, 1));
$ThisDirectoryRecord['raw']['file_unit_size'] = LittleEndian2Int(substr($DirectoryRecordData, 26, 1));
$ThisDirectoryRecord['raw']['interleave_gap_size'] = LittleEndian2Int(substr($DirectoryRecordData, 27, 1));
$ThisDirectoryRecord['raw']['volume_sequence_number'] = LittleEndian2Int(substr($DirectoryRecordData, 28, 2));
$ThisDirectoryRecord['raw']['file_identifier_length'] = LittleEndian2Int(substr($DirectoryRecordData, 32, 1));
$ThisDirectoryRecord['raw']['file_identifier'] = substr($DirectoryRecordData, 33, $ThisDirectoryRecord['raw']['file_identifier_length']);
$ThisDirectoryRecord['file_identifier_ascii'] = RoughTranslateUnicodeToASCII($ThisDirectoryRecord['raw']['file_identifier'], $TextEncoding);
$ThisDirectoryRecord['filesize'] = $ThisDirectoryRecord['raw']['filesize'];
$ThisDirectoryRecord['offset_bytes'] = $ThisDirectoryRecord['raw']['offset_logical'] * 2048;
$ThisDirectoryRecord['file_flags']['hidden'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x01);
$ThisDirectoryRecord['file_flags']['directory'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x02);
$ThisDirectoryRecord['file_flags']['associated'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x04);
$ThisDirectoryRecord['file_flags']['extended'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x08);
$ThisDirectoryRecord['file_flags']['permissions'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x10);
$ThisDirectoryRecord['file_flags']['multiple'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x80);
$ThisDirectoryRecord['recording_timestamp'] = ISOtime2UNIXtime($ThisDirectoryRecord['raw']['recording_date_time']);
if ($ThisDirectoryRecord['file_flags']['directory']) {
$ThisDirectoryRecord['filename'] = $directorydata['full_path'];
} else {
$ThisDirectoryRecord['filename'] = $directorydata['full_path'].ISOstripFilenameVersion($ThisDirectoryRecord['file_identifier_ascii']);
$ThisFileInfo['iso']['files'] = array_merge_clobber($ThisFileInfo['iso']['files'], CreateDeepArray($ThisDirectoryRecord['filename'], '/', $ThisDirectoryRecord['filesize']));
}
$DirectoryRecord[] = $ThisDirectoryRecord;
$DirectoryRecordData = fread($fd, 1);
}
return $DirectoryRecord;
}
function ISOstripFilenameVersion($ISOfilename) {
// convert 'filename.ext;1' to 'filename.ext'
if (!strstr($ISOfilename, ';')) {
return $ISOfilename;
} else {
return substr($ISOfilename, 0, strpos($ISOfilename, ';'));
}
}
function ISOtimeText2UNIXtime($ISOtime) {
$UNIXyear = (int) substr($ISOtime, 0, 4);
$UNIXmonth = (int) substr($ISOtime, 4, 2);
$UNIXday = (int) substr($ISOtime, 6, 2);
$UNIXhour = (int) substr($ISOtime, 8, 2);
$UNIXminute = (int) substr($ISOtime, 10, 2);
$UNIXsecond = (int) substr($ISOtime, 12, 2);
if (!$UNIXyear) {
return false;
}
return mktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
}
function ISOtime2UNIXtime($ISOtime) {
// Represented by seven bytes:
// 1: Number of years since 1900
// 2: Month of the year from 1 to 12
// 3: Day of the Month from 1 to 31
// 4: Hour of the day from 0 to 23
// 5: Minute of the hour from 0 to 59
// 6: second of the minute from 0 to 59
// 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)
$UNIXyear = ord($ISOtime{0}) + 1900;
$UNIXmonth = ord($ISOtime{1});
$UNIXday = ord($ISOtime{2});
$UNIXhour = ord($ISOtime{3});
$UNIXminute = ord($ISOtime{4});
$UNIXsecond = ord($ISOtime{5});
$GMToffset = TwosCompliment2Decimal(ord($ISOtime{5}));
return mktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
}
?>
