280 lines
9.5 KiB
PHP
280 lines
9.5 KiB
PHP
|
<?php
|
|||
|
|
/////////////////////////////////////////////////////////////////
|
|||
|
|
/// getID3() by James Heinrich <info@getid3.org> //
|
|||
|
|
// available at http://getid3.sourceforge.net //
|
|||
|
|
// or http://www.getid3.org //
|
|||
|
|
/////////////////////////////////////////////////////////////////
|
|||
|
|
// See readme.txt for more details //
|
|||
|
|
/////////////////////////////////////////////////////////////////
|
|||
|
|
// //
|
|||
|
|
// module.archive.gzip.php //
|
|||
|
|
// module for analyzing GZIP files //
|
|||
|
|
// dependencies: NONE //
|
|||
|
|
// ///
|
|||
|
|
/////////////////////////////////////////////////////////////////
|
|||
|
|
// //
|
|||
|
|
// Module originally written by //
|
|||
|
|
// Mike Mozolin <teddybear<61>mail*ru> //
|
|||
|
|
// //
|
|||
|
|
/////////////////////////////////////////////////////////////////
|
|||
|
|
|
|||
|
|
|
|||
|
|
class getid3_gzip extends getid3_handler {
|
|||
|
|
|
|||
|
|
// public: Optional file list - disable for speed.
|
|||
|
|
public $option_gzip_parse_contents = false; // decode gzipped files, if possible, and parse recursively (.tar.gz for example)
|
|||
|
|
|
|||
|
|
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("\x1F\x8B\x08", $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;
|
|||
|
|
}
|
|||
|
|
$buf = "\x1F\x8B\x08".$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];
|
|||
|
|
|
|||
|
|
$buff = "\x1F\x8B\x08".$arr_members[$i];
|
|||
|
|
|
|||
|
|
$attr = unpack($unpack_header, substr($buff, 0, $start_length));
|
|||
|
|
$thisInfo['filemtime'] = getid3_lib::LittleEndian2Int($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'] & 0x02);
|
|||
|
|
$thisInfo['flags']['extra'] = (bool) ($thisInfo['raw']['flags'] & 0x04);
|
|||
|
|
$thisInfo['flags']['filename'] = (bool) ($thisInfo['raw']['flags'] & 0x08);
|
|||
|
|
$thisInfo['flags']['comment'] = (bool) ($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);
|
|||
|
|
$xlen = getid3_lib::LittleEndian2Int($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);
|
|||
|
|
$xsublen = getid3_lib::LittleEndian2Int($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);
|
|||
|
|
$thisInfo['crc16'] = getid3_lib::LittleEndian2Int($w_crc);
|
|||
|
|
$fpointer += 2;
|
|||
|
|
}
|
|||
|
|
// bit 0 - FLG.FTEXT
|
|||
|
|
//if ($thisInfo['raw']['flags'] & 0x01) {
|
|||
|
|
// Ignored...
|
|||
|
|
//}
|
|||
|
|
// bits 5, 6, 7 - reserved
|
|||
|
|
|
|||
|
|
$thisInfo['crc32'] = getid3_lib::LittleEndian2Int(substr($buff, strlen($buff) - 8, 4));
|
|||
|
|
$thisInfo['filesize'] = getid3_lib::LittleEndian2Int(substr($buff, strlen($buff) - 4));
|
|||
|
|
|
|||
|
|
$info['gzip']['files'] = getid3_lib::array_merge_clobber($info['gzip']['files'], getid3_lib::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 getID3();
|
|||
|
|
$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 (file_exists(GETID3_INCLUDEPATH.$determined_format['include']) && include_once(GETID3_INCLUDEPATH.$determined_format['include'])) {
|
|||
|
|
if (($temp_tar_filename = tempnam(GETID3_TEMP_DIR, '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 getID3();
|
|||
|
|
$getid3_temp->openfile($temp_tar_filename);
|
|||
|
|
$getid3_tar = new getid3_tar($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 {
|
|||
|
|
$info['error'][] = 'Unable to fopen() temp file to parse TAR inside GZIP file';
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
break;
|
|||
|
|
|
|||
|
|
case '':
|
|||
|
|
default:
|
|||
|
|
// unknown or unhandled format
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Converts the OS type
|
|||
|
|
public function get_os_type($key) {
|
|||
|
|
static $os_type = array(
|
|||
|
|
'0' => 'FAT filesystem (MS-DOS, OS/2, NT/Win32)',
|
|||
|
|
'1' => 'Amiga',
|
|||
|
|
'2' => 'VMS (or OpenVMS)',
|
|||
|
|
'3' => 'Unix',
|
|||
|
|
'4' => 'VM/CMS',
|
|||
|
|
'5' => 'Atari TOS',
|
|||
|
|
'6' => 'HPFS filesystem (OS/2, NT)',
|
|||
|
|
'7' => 'Macintosh',
|
|||
|
|
'8' => 'Z-System',
|
|||
|
|
'9' => 'CP/M',
|
|||
|
|
'10' => 'TOPS-20',
|
|||
|
|
'11' => 'NTFS filesystem (NT)',
|
|||
|
|
'12' => 'QDOS',
|
|||
|
|
'13' => 'Acorn RISCOS',
|
|||
|
|
'255' => 'unknown'
|
|||
|
|
);
|
|||
|
|
return (isset($os_type[$key]) ? $os_type[$key] : '');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Converts the eXtra FLags
|
|||
|
|
public function get_xflag_type($key) {
|
|||
|
|
static $xflag_type = array(
|
|||
|
|
'0' => 'unknown',
|
|||
|
|
'2' => 'maximum compression',
|
|||
|
|
'4' => 'fastest algorithm'
|
|||
|
|
);
|
|||
|
|
return (isset($xflag_type[$key]) ? $xflag_type[$key] : '');
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|