/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'rar';
if ($this->option_use_rar_extension === true) {
if (function_exists('rar_open')) {
if ($rp = rar_open($info['filenamepath'])) {
$info['rar']['files'] = array();
$entries = rar_list($rp);
foreach ($entries as $entry) {
$info['rar']['files'] = Helper::array_merge_clobber($info['rar']['files'], Helper::CreateDeepArray($entry->getName(), '/', $entry->getUnpackedSize()));
}
rar_close($rp);
return true;
} else {
$info['error'][] = 'failed to rar_open(' . $info['filename'] . ')';
}
} else {
$info['error'][] = 'RAR support does not appear to be available in this PHP installation';
}
} else {
$info['error'][] = 'PHP-RAR processing has been disabled (set $getid3_rar->option_use_rar_extension=true to enable)';
}
return false;
}
/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'gzip';
$start_length = 10;
$unpack_header = 'a1id1/a1id2/a1cmethod/a1flags/a4mtime/a1xflags/a1os';
//+---+---+---+---+---+---+---+---+---+---+
//|ID1|ID2|CM |FLG| MTIME |XFL|OS |
//+---+---+---+---+---+---+---+---+---+---+
if ($info['filesize'] > $info['php_memory_limit']) {
$info['error'][] = 'File is too large (' . number_format($info['filesize']) . ' bytes) to read into memory (limit: ' . number_format($info['php_memory_limit'] / 1048576) . 'MB)';
return false;
}
fseek($this->getid3->fp, 0);
$buffer = fread($this->getid3->fp, $info['filesize']);
$arr_members = explode(" ‹", $buffer);
while (true) {
$is_wrong_members = false;
$num_members = intval(count($arr_members));
for ($i = 0; $i < $num_members; ++$i) {
if (strlen($arr_members[$i]) == 0) {
continue;
}
$buf = " ‹" . $arr_members[$i];
$attr = unpack($unpack_header, substr($buf, 0, $start_length));
if (!$this->get_os_type(ord($attr['os']))) {
// Merge member with previous if wrong OS type
$arr_members[$i - 1] .= $buf;
$arr_members[$i] = '';
$is_wrong_members = true;
continue;
}
}
if (!$is_wrong_members) {
break;
}
}
$info['gzip']['files'] = array();
$fpointer = 0;
$idx = 0;
for ($i = 0; $i < $num_members; ++$i) {
if (strlen($arr_members[$i]) == 0) {
continue;
}
$thisInfo =& $info['gzip']['member_header'][++$idx];
$buff = " ‹" . $arr_members[$i];
$attr = unpack($unpack_header, substr($buff, 0, $start_length));
$thisInfo['filemtime'] = Helper::LittleEndian2Int($attr['mtime']);
$thisInfo['raw']['id1'] = ord($attr['cmethod']);
$thisInfo['raw']['id2'] = ord($attr['cmethod']);
$thisInfo['raw']['cmethod'] = ord($attr['cmethod']);
$thisInfo['raw']['os'] = ord($attr['os']);
$thisInfo['raw']['xflags'] = ord($attr['xflags']);
$thisInfo['raw']['flags'] = ord($attr['flags']);
$thisInfo['flags']['crc16'] = (bool) ($thisInfo['raw']['flags'] & 0x2);
$thisInfo['flags']['extra'] = (bool) ($thisInfo['raw']['flags'] & 0x4);
$thisInfo['flags']['filename'] = (bool) ($thisInfo['raw']['flags'] & 0x8);
$thisInfo['flags']['comment'] = (bool) ($thisInfo['raw']['flags'] & 0x10);
$thisInfo['compression'] = $this->get_xflag_type($thisInfo['raw']['xflags']);
$thisInfo['os'] = $this->get_os_type($thisInfo['raw']['os']);
if (!$thisInfo['os']) {
$info['error'][] = 'Read error on gzip file';
return false;
}
$fpointer = 10;
$arr_xsubfield = array();
// bit 2 - FLG.FEXTRA
//+---+---+=================================+
//| XLEN |...XLEN bytes of "extra field"...|
//+---+---+=================================+
if ($thisInfo['flags']['extra']) {
$w_xlen = substr($buff, $fpointer, 2);
$xlen = Helper::LittleEndian2Int($w_xlen);
$fpointer += 2;
$thisInfo['raw']['xfield'] = substr($buff, $fpointer, $xlen);
// Extra SubFields
//+---+---+---+---+==================================+
//|SI1|SI2| LEN |... LEN bytes of subfield data ...|
//+---+---+---+---+==================================+
$idx = 0;
while (true) {
if ($idx >= $xlen) {
break;
}
$si1 = ord(substr($buff, $fpointer + $idx++, 1));
$si2 = ord(substr($buff, $fpointer + $idx++, 1));
if ($si1 == 0x41 && $si2 == 0x70) {
$w_xsublen = substr($buff, $fpointer + $idx, 2);
$xsublen = Helper::LittleEndian2Int($w_xsublen);
$idx += 2;
$arr_xsubfield[] = substr($buff, $fpointer + $idx, $xsublen);
$idx += $xsublen;
} else {
break;
}
}
$fpointer += $xlen;
}
// bit 3 - FLG.FNAME
//+=========================================+
//|...original file name, zero-terminated...|
//+=========================================+
// GZIP files may have only one file, with no filename, so assume original filename is current filename without .gz
$thisInfo['filename'] = preg_replace('#\\.gz$#i', '', $info['filename']);
if ($thisInfo['flags']['filename']) {
while (true) {
if (ord($buff[$fpointer]) == 0) {
++$fpointer;
break;
}
$thisInfo['filename'] .= $buff[$fpointer];
++$fpointer;
}
}
// bit 4 - FLG.FCOMMENT
//+===================================+
//|...file comment, zero-terminated...|
//+===================================+
if ($thisInfo['flags']['comment']) {
while (true) {
if (ord($buff[$fpointer]) == 0) {
++$fpointer;
break;
}
$thisInfo['comment'] .= $buff[$fpointer];
++$fpointer;
}
}
// bit 1 - FLG.FHCRC
//+---+---+
//| CRC16 |
//+---+---+
if ($thisInfo['flags']['crc16']) {
$w_crc = substr($buff, $fpointer, 2);
$thisInfo['crc16'] = Helper::LittleEndian2Int($w_crc);
$fpointer += 2;
}
// bit 0 - FLG.FTEXT
//if ($thisInfo['raw']['flags'] & 0x01) {
// Ignored...
//}
// bits 5, 6, 7 - reserved
$thisInfo['crc32'] = Helper::LittleEndian2Int(substr($buff, strlen($buff) - 8, 4));
$thisInfo['filesize'] = Helper::LittleEndian2Int(substr($buff, strlen($buff) - 4));
$info['gzip']['files'] = Helper::array_merge_clobber($info['gzip']['files'], Helper::CreateDeepArray($thisInfo['filename'], '/', $thisInfo['filesize']));
if ($this->option_gzip_parse_contents) {
// Try to inflate GZip
$csize = 0;
$inflated = '';
$chkcrc32 = '';
if (function_exists('gzinflate')) {
$cdata = substr($buff, $fpointer);
$cdata = substr($cdata, 0, strlen($cdata) - 8);
$csize = strlen($cdata);
$inflated = gzinflate($cdata);
// Calculate CRC32 for inflated content
$thisInfo['crc32_valid'] = (bool) (sprintf('%u', crc32($inflated)) == $thisInfo['crc32']);
// determine format
$formattest = substr($inflated, 0, 32774);
$getid3_temp = new GetId3Core();
$determined_format = $getid3_temp->GetFileFormat($formattest);
unset($getid3_temp);
// file format is determined
$determined_format['module'] = isset($determined_format['module']) ? $determined_format['module'] : '';
switch ($determined_format['module']) {
case 'tar':
// view TAR-file info
if (class_exists($determined_format['class'])) {
if (($temp_tar_filename = tempnam(GetId3Core::getTempDir(), 'getID3')) === false) {
// can't find anywhere to create a temp file, abort
$info['error'][] = 'Unable to create temp file to parse TAR inside GZIP file';
break;
}
if ($fp_temp_tar = fopen($temp_tar_filename, 'w+b')) {
fwrite($fp_temp_tar, $inflated);
fclose($fp_temp_tar);
$getid3_temp = new GetId3Core();
$getid3_temp->openfile($temp_tar_filename);
$getid3_tar = new Tar($getid3_temp);
$getid3_tar->analyze();
$info['gzip']['member_header'][$idx]['tar'] = $getid3_temp->info['tar'];
unset($getid3_temp, $getid3_tar);
unlink($temp_tar_filename);
} else {
$info['error'][] = 'Unable to fopen() temp file to parse TAR inside GZIP file';
break;
}
}
break;
case '':
default:
// unknown or unhandled format
break;
}
}
}
}
return true;
}
/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'zip';
$info['zip']['encoding'] = 'ISO-8859-1';
$info['zip']['files'] = array();
$info['zip']['compressed_size'] = 0;
$info['zip']['uncompressed_size'] = 0;
$info['zip']['entries_count'] = 0;
if (!Helper::intValueSupported($info['filesize'])) {
$info['error'][] = 'File is larger than ' . round(PHP_INT_MAX / 1073741824) . 'GB, not supported by PHP';
return false;
} else {
$EOCDsearchData = '';
$EOCDsearchCounter = 0;
while ($EOCDsearchCounter++ < 512) {
fseek($this->getid3->fp, -128 * $EOCDsearchCounter, SEEK_END);
$EOCDsearchData = fread($this->getid3->fp, 128) . $EOCDsearchData;
if (strstr($EOCDsearchData, 'PK' . "")) {
$EOCDposition = strpos($EOCDsearchData, 'PK' . "");
fseek($this->getid3->fp, -128 * $EOCDsearchCounter + $EOCDposition, SEEK_END);
$info['zip']['end_central_directory'] = $this->ZIPparseEndOfCentralDirectory();
fseek($this->getid3->fp, $info['zip']['end_central_directory']['directory_offset'], SEEK_SET);
$info['zip']['entries_count'] = 0;
while ($centraldirectoryentry = $this->ZIPparseCentralDirectory($this->getid3->fp)) {
$info['zip']['central_directory'][] = $centraldirectoryentry;
++$info['zip']['entries_count'];
$info['zip']['compressed_size'] += $centraldirectoryentry['compressed_size'];
$info['zip']['uncompressed_size'] += $centraldirectoryentry['uncompressed_size'];
if ($centraldirectoryentry['uncompressed_size'] > 0) {
$info['zip']['files'] = Helper::array_merge_clobber($info['zip']['files'], Helper::CreateDeepArray($centraldirectoryentry['filename'], '/', $centraldirectoryentry['uncompressed_size']));
}
}
if ($info['zip']['entries_count'] == 0) {
$info['error'][] = 'No Central Directory entries found (truncated file?)';
return false;
}
if (!empty($info['zip']['end_central_directory']['comment'])) {
$info['zip']['comments']['comment'][] = $info['zip']['end_central_directory']['comment'];
}
if (isset($info['zip']['central_directory'][0]['compression_method'])) {
$info['zip']['compression_method'] = $info['zip']['central_directory'][0]['compression_method'];
}
if (isset($info['zip']['central_directory'][0]['flags']['compression_speed'])) {
$info['zip']['compression_speed'] = $info['zip']['central_directory'][0]['flags']['compression_speed'];
}
if (isset($info['zip']['compression_method']) && $info['zip']['compression_method'] == 'store' && !isset($info['zip']['compression_speed'])) {
$info['zip']['compression_speed'] = 'store';
}
return true;
}
}
}
if ($this->getZIPentriesFilepointer()) {
// 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 ($info['zip']['compressed_size'] > $info['filesize'] - 46 - 22) {
$info['error'][] = 'Warning: Truncated file! - Total compressed file sizes (' . $info['zip']['compressed_size'] . ' bytes) is greater than filesize minus Central Directory and End Of Central Directory structures (' . ($info['filesize'] - 46 - 22) . ' bytes)';
}
$info['error'][] = 'Cannot find End Of Central Directory - returned list of files in [zip][entries] array may not be complete';
foreach ($info['zip']['entries'] as $key => $valuearray) {
$info['zip']['files'][$valuearray['filename']] = $valuearray['uncompressed_size'];
}
return true;
} else {
unset($info['zip']);
$info['fileformat'] = '';
$info['error'][] = 'Cannot find End Of Central Directory (truncated file?)';
return false;
}
}
/**
* @param type $directorydata
*
* @return string
*/
public function ParseDirectoryRecord($directorydata)
{
$info =& $this->getid3->info;
if (isset($info['iso']['supplementary_volume_descriptor'])) {
$TextEncoding = 'UTF-16BE';
// Big-Endian Unicode
} else {
$TextEncoding = 'ISO-8859-1';
// Latin-1
}
fseek($this->getid3->fp, $directorydata['location_bytes'], SEEK_SET);
$DirectoryRecordData = fread($this->getid3->fp, 1);
while (ord($DirectoryRecordData[0]) > 33) {
$DirectoryRecordData .= fread($this->getid3->fp, ord($DirectoryRecordData[0]) - 1);
$ThisDirectoryRecord['raw']['length'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 0, 1));
$ThisDirectoryRecord['raw']['extended_attribute_length'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 1, 1));
$ThisDirectoryRecord['raw']['offset_logical'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 2, 4));
$ThisDirectoryRecord['raw']['filesize'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 10, 4));
$ThisDirectoryRecord['raw']['recording_date_time'] = substr($DirectoryRecordData, 18, 7);
$ThisDirectoryRecord['raw']['file_flags'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 25, 1));
$ThisDirectoryRecord['raw']['file_unit_size'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 26, 1));
$ThisDirectoryRecord['raw']['interleave_gap_size'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 27, 1));
$ThisDirectoryRecord['raw']['volume_sequence_number'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 28, 2));
$ThisDirectoryRecord['raw']['file_identifier_length'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 32, 1));
$ThisDirectoryRecord['raw']['file_identifier'] = substr($DirectoryRecordData, 33, $ThisDirectoryRecord['raw']['file_identifier_length']);
$ThisDirectoryRecord['file_identifier_ascii'] = Helper::iconv_fallback($TextEncoding, $info['encoding'], $ThisDirectoryRecord['raw']['file_identifier']);
$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'] = $this->ISOtime2UNIXtime($ThisDirectoryRecord['raw']['recording_date_time']);
if ($ThisDirectoryRecord['file_flags']['directory']) {
$ThisDirectoryRecord['filename'] = $directorydata['full_path'];
} else {
$ThisDirectoryRecord['filename'] = $directorydata['full_path'] . $this->ISOstripFilenameVersion($ThisDirectoryRecord['file_identifier_ascii']);
$info['iso']['files'] = Helper::array_merge_clobber($info['iso']['files'], Helper::CreateDeepArray($ThisDirectoryRecord['filename'], '/', $ThisDirectoryRecord['filesize']));
}
$DirectoryRecord[] = $ThisDirectoryRecord;
$DirectoryRecordData = fread($this->getid3->fp, 1);
}
return $DirectoryRecord;
}
/**
* @return bool
*/
public function analyze()
{
$info =& $this->getid3->info;
$info['fileformat'] = 'tar';
$info['tar']['files'] = array();
$unpack_header = 'a100fname/a8mode/a8uid/a8gid/a12size/a12mtime/a8chksum/a1typflag/a100lnkname/a6magic/a2ver/a32uname/a32gname/a8devmaj/a8devmin/a155prefix';
$null_512k = str_repeat("", 512);
// end-of-file marker
fseek($this->getid3->fp, 0);
while (!feof($this->getid3->fp)) {
$buffer = fread($this->getid3->fp, 512);
if (strlen($buffer) < 512) {
break;
}
// check the block
$checksum = 0;
for ($i = 0; $i < 148; ++$i) {
$checksum += ord($buffer[$i]);
}
for ($i = 148; $i < 156; ++$i) {
$checksum += ord(' ');
}
for ($i = 156; $i < 512; ++$i) {
$checksum += ord($buffer[$i]);
}
$attr = unpack($unpack_header, $buffer);
$name = isset($attr['fname']) ? trim($attr['fname']) : '';
$mode = octdec(isset($attr['mode']) ? trim($attr['mode']) : '');
$uid = octdec(isset($attr['uid']) ? trim($attr['uid']) : '');
$gid = octdec(isset($attr['gid']) ? trim($attr['gid']) : '');
$size = octdec(isset($attr['size']) ? trim($attr['size']) : '');
$mtime = octdec(isset($attr['mtime']) ? trim($attr['mtime']) : '');
$chksum = octdec(isset($attr['chksum']) ? trim($attr['chksum']) : '');
$typflag = isset($attr['typflag']) ? trim($attr['typflag']) : '';
$lnkname = isset($attr['lnkname']) ? trim($attr['lnkname']) : '';
$magic = isset($attr['magic']) ? trim($attr['magic']) : '';
$ver = isset($attr['ver']) ? trim($attr['ver']) : '';
$uname = isset($attr['uname']) ? trim($attr['uname']) : '';
$gname = isset($attr['gname']) ? trim($attr['gname']) : '';
$devmaj = octdec(isset($attr['devmaj']) ? trim($attr['devmaj']) : '');
$devmin = octdec(isset($attr['devmin']) ? trim($attr['devmin']) : '');
$prefix = isset($attr['prefix']) ? trim($attr['prefix']) : '';
if ($checksum == 256 && $chksum == 0) {
// EOF Found
break;
}
if ($prefix) {
$name = $prefix . '/' . $name;
}
if (preg_match('#/$#', $name) && !$name) {
$typeflag = 5;
}
if ($buffer == $null_512k) {
// it's the end of the tar-file...
break;
}
// Read to the next chunk
fseek($this->getid3->fp, $size, SEEK_CUR);
$diff = $size % 512;
if ($diff != 0) {
// Padding, throw away
fseek($this->getid3->fp, 512 - $diff, SEEK_CUR);
}
// Protect against tar-files with garbage at the end
if ($name == '') {
break;
}
$info['tar']['file_details'][$name] = array('name' => $name, 'mode_raw' => $mode, 'mode' => self::display_perms($mode), 'uid' => $uid, 'gid' => $gid, 'size' => $size, 'mtime' => $mtime, 'chksum' => $chksum, 'typeflag' => self::get_flag_type($typflag), 'linkname' => $lnkname, 'magic' => $magic, 'version' => $ver, 'uname' => $uname, 'gname' => $gname, 'devmajor' => $devmaj, 'devminor' => $devmin);
$info['tar']['files'] = Helper::array_merge_clobber($info['tar']['files'], Helper::CreateDeepArray($info['tar']['file_details'][$name]['name'], '/', $size));
}
return true;
}
