function CreateDeepArray($ArrayPath, $Separator, $Value)
{
// assigns $Value to a nested array path:
// $foo = CreateDeepArray('/path/to/my', '/', 'file.txt')
// is the same as:
// $foo = array('path'=>array('to'=>'array('my'=>array('file.txt'))));
// or
// $foo['path']['to']['my'] = 'file.txt';
while ($ArrayPath[0] == $Separator) {
$ArrayPath = substr($ArrayPath, 1);
}
if (($pos = strpos($ArrayPath, $Separator)) !== false) {
$ReturnedArray[substr($ArrayPath, 0, $pos)] = CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value);
} else {
$ReturnedArray["{$ArrayPath}"] = $Value;
}
return $ReturnedArray;
}
function getZIPHeaderFilepointer(&$fd, &$ThisFileInfo)
{
$ThisFileInfo['fileformat'] = 'zip';
$ThisFileInfo['zip']['files'] = array();
$ThisFileInfo['zip']['compressed_size'] = 0;
$ThisFileInfo['zip']['uncompressed_size'] = 0;
$ThisFileInfo['zip']['entries_count'] = 0;
$EOCDsearchData = '';
$EOCDsearchCounter = 0;
while ($EOCDsearchCounter++ < 512) {
fseek($fd, -128 * $EOCDsearchCounter, SEEK_END);
$EOCDsearchData = fread($fd, 128) . $EOCDsearchData;
if (strstr($EOCDsearchData, 'PK' . chr(5) . chr(6))) {
$EOCDposition = strpos($EOCDsearchData, 'PK' . chr(5) . chr(6));
fseek($fd, -128 * $EOCDsearchCounter + $EOCDposition, SEEK_END);
$ThisFileInfo['zip']['end_central_directory'] = ZIPparseEndOfCentralDirectory($fd);
fseek($fd, $ThisFileInfo['zip']['end_central_directory']['directory_offset'], SEEK_SET);
$ThisFileInfo['zip']['entries_count'] = 0;
while ($centraldirectoryentry = ZIPparseCentralDirectory($fd)) {
$ThisFileInfo['zip']['central_directory'][] = $centraldirectoryentry;
$ThisFileInfo['zip']['entries_count']++;
$ThisFileInfo['zip']['compressed_size'] += $centraldirectoryentry['compressed_size'];
$ThisFileInfo['zip']['uncompressed_size'] += $centraldirectoryentry['uncompressed_size'];
if ($centraldirectoryentry['uncompressed_size'] > 0) {
$ThisFileInfo['zip']['files'] = array_merge_clobber($ThisFileInfo['zip']['files'], CreateDeepArray($centraldirectoryentry['filename'], '/', $centraldirectoryentry['uncompressed_size']));
}
}
if ($ThisFileInfo['zip']['entries_count'] == 0) {
$ThisFileInfo['error'] .= "\n" . 'No Central Directory entries found (truncated file?)';
return false;
}
if (isset($ThisFileInfo['zip']['end_central_directory']['comment'])) {
$ThisFileInfo['zip']['comments']['comment'] = $ThisFileInfo['zip']['end_central_directory']['comment'];
// ZIP tags have highest priority
if (!empty($ThisFileInfo['zip']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['zip']['comments'], $ThisFileInfo, true, true, true);
}
// add tag to array of tags
$ThisFileInfo['tags'][] = 'zip';
}
if (isset($ThisFileInfo['zip']['central_directory'][0]['compression_method'])) {
$ThisFileInfo['zip']['compression_method'] = $ThisFileInfo['zip']['central_directory'][0]['compression_method'];
}
if (isset($ThisFileInfo['zip']['central_directory'][0]['flags']['compression_speed'])) {
$ThisFileInfo['zip']['compression_speed'] = $ThisFileInfo['zip']['central_directory'][0]['flags']['compression_speed'];
}
if (isset($ThisFileInfo['zip']['compression_method']) && $ThisFileInfo['zip']['compression_method'] == 'store' && !isset($ThisFileInfo['zip']['compression_speed'])) {
$ThisFileInfo['zip']['compression_speed'] = 'store';
}
return true;
}
}
if (getZIPentriesFilepointer($fd, $ThisFileInfo)) {
// central directory couldn't be found and/or parsed
// scan through actual file data entries, recover as much as possible from probable trucated file
if ($ThisFileInfo['zip']['compressed_size'] > $ThisFileInfo['filesize'] - 46 - 22) {
$ThisFileInfo['error'] .= "\n" . 'Warning: Truncated file! - Total compressed file sizes (' . $ThisFileInfo['zip']['compressed_size'] . ' bytes) is greater than filesize minus Central Directory and End Of Central Directory structures (' . ($ThisFileInfo['filesize'] - 46 - 22) . ' bytes)';
}
$ThisFileInfo['error'] .= "\n" . 'Cannot find End Of Central Directory - returned list of files in [zip][entries] array may not be complete';
return true;
} else {
unset($ThisFileInfo['zip']);
$ThisFileInfo['fileformat'] = '';
$ThisFileInfo['error'] .= "\n" . 'Cannot find End Of Central Directory (truncated file?)';
return false;
}
}
function ParseDirectoryRecord(&$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'] & 0x1);
$ThisDirectoryRecord['file_flags']['directory'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x2);
$ThisDirectoryRecord['file_flags']['associated'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x4);
$ThisDirectoryRecord['file_flags']['extended'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x8);
$ThisDirectoryRecord['file_flags']['permissions'] = (bool) ($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;
}
