mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-03 09:49:30 +02:00
510 lines
No EOL
22 KiB
PHP
510 lines
No EOL
22 KiB
PHP
<?php
|
|
// +----------------------------------------------------------------------+
|
|
// | PHP version 5 |
|
|
// +----------------------------------------------------------------------+
|
|
// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen |
|
|
// +----------------------------------------------------------------------+
|
|
// | This source file is subject to version 2 of the GPL license, |
|
|
// | that is bundled with this package in the file license.txt and is |
|
|
// | available through the world-wide-web at the following url: |
|
|
// | http://www.gnu.org/copyleft/gpl.html |
|
|
// +----------------------------------------------------------------------+
|
|
// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org |
|
|
// +----------------------------------------------------------------------+
|
|
// | Authors: James Heinrich <infoØgetid3*org> |
|
|
// | Allan Hansen <ahØartemis*dk> |
|
|
// +----------------------------------------------------------------------+
|
|
// | module.archive.zip.php |
|
|
// | Module for analyzing pkZip files |
|
|
// | dependencies: NONE |
|
|
// +----------------------------------------------------------------------+
|
|
//
|
|
// $Id: module.archive.zip.php,v 1.4 2006/11/02 10:48:00 ah Exp $
|
|
|
|
|
|
|
|
class getid3_zip extends getid3_handler
|
|
{
|
|
|
|
public function Analyze() {
|
|
|
|
$getid3 = $this->getid3;
|
|
|
|
$getid3->info['zip'] = array ();
|
|
$info_zip = &$getid3->info['zip'];
|
|
|
|
$getid3->info['fileformat'] = 'zip';
|
|
|
|
$info_zip['encoding'] = 'ISO-8859-1';
|
|
$info_zip['files'] = array ();
|
|
$info_zip['compressed_size'] = $info_zip['uncompressed_size'] = $info_zip['entries_count'] = 0;
|
|
|
|
$eocd_search_data = '';
|
|
$eocd_search_counter = 0;
|
|
while ($eocd_search_counter++ < 512) {
|
|
|
|
fseek($getid3->fp, -128 * $eocd_search_counter, SEEK_END);
|
|
$eocd_search_data = fread($getid3->fp, 128).$eocd_search_data;
|
|
|
|
if (strstr($eocd_search_data, 'PK'."\x05\x06")) {
|
|
|
|
$eocd_position = strpos($eocd_search_data, 'PK'."\x05\x06");
|
|
fseek($getid3->fp, (-128 * $eocd_search_counter) + $eocd_position, SEEK_END);
|
|
$info_zip['end_central_directory'] = $this->ZIPparseEndOfCentralDirectory();
|
|
|
|
fseek($getid3->fp, $info_zip['end_central_directory']['directory_offset'], SEEK_SET);
|
|
$info_zip['entries_count'] = 0;
|
|
while ($central_directoryentry = $this->ZIPparseCentralDirectory($getid3->fp)) {
|
|
$info_zip['central_directory'][] = $central_directoryentry;
|
|
$info_zip['entries_count']++;
|
|
$info_zip['compressed_size'] += $central_directoryentry['compressed_size'];
|
|
$info_zip['uncompressed_size'] += $central_directoryentry['uncompressed_size'];
|
|
|
|
if ($central_directoryentry['uncompressed_size'] > 0) {
|
|
$info_zip['files'] = getid3_zip::array_merge_clobber($info_zip['files'], getid3_zip::CreateDeepArray($central_directoryentry['filename'], '/', $central_directoryentry['uncompressed_size']));
|
|
}
|
|
}
|
|
|
|
if ($info_zip['entries_count'] == 0) {
|
|
throw new getid3_exception('No Central Directory entries found (truncated file?)');
|
|
}
|
|
|
|
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 (@$info_zip['compressed_size'] > ($getid3->info['filesize'] - 46 - 22)) {
|
|
throw new getid3_exception('Warning: Truncated file! - Total compressed file sizes ('.$info_zip['compressed_size'].' bytes) is greater than filesize minus Central Directory and End Of Central Directory structures ('.($getid3->info['filesize'] - 46 - 22).' bytes)');
|
|
}
|
|
throw new getid3_exception('Cannot find End Of Central Directory - returned list of files in [zip][entries] array may not be complete');
|
|
}
|
|
|
|
//throw new getid3_exception('Cannot find End Of Central Directory (truncated file?)');
|
|
}
|
|
|
|
|
|
|
|
private function getZIPHeaderFilepointerTopDown() {
|
|
|
|
// shortcut
|
|
$getid3 = $this->getid3;
|
|
|
|
$getid3->info['fileformat'] = 'zip';
|
|
|
|
$getid3->info['zip'] = array ();
|
|
$info_zip['compressed_size'] = $info_zip['uncompressed_size'] = $info_zip['entries_count'] = 0;
|
|
|
|
rewind($getid3->fp);
|
|
while ($fileentry = $this->ZIPparseLocalFileHeader()) {
|
|
$info_zip['entries'][] = $fileentry;
|
|
$info_zip['entries_count']++;
|
|
}
|
|
if ($info_zip['entries_count'] == 0) {
|
|
throw new getid3_exception('No Local File Header entries found');
|
|
}
|
|
|
|
$info_zip['entries_count'] = 0;
|
|
while ($central_directoryentry = $this->ZIPparseCentralDirectory($getid3->fp)) {
|
|
$info_zip['central_directory'][] = $central_directoryentry;
|
|
$info_zip['entries_count']++;
|
|
$info_zip['compressed_size'] += $central_directoryentry['compressed_size'];
|
|
$info_zip['uncompressed_size'] += $central_directoryentry['uncompressed_size'];
|
|
}
|
|
if ($info_zip['entries_count'] == 0) {
|
|
throw new getid3_exception('No Central Directory entries found (truncated file?)');
|
|
}
|
|
|
|
if ($eocd = $this->ZIPparseEndOfCentralDirectory()) {
|
|
$info_zip['end_central_directory'] = $eocd;
|
|
} else {
|
|
throw new getid3_exception('No End Of Central Directory entry found (truncated file?)');
|
|
}
|
|
|
|
if (!@$info_zip['end_central_directory']['comment']) {
|
|
$info_zip['comments']['comment'][] = $info_zip['end_central_directory']['comment'];
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
private function getZIPentriesFilepointer() {
|
|
|
|
// shortcut
|
|
$getid3 = $this->getid3;
|
|
|
|
$getid3->info['zip'] = array ();
|
|
$info_zip['compressed_size'] = $info_zip['uncompressed_size'] = $info_zip['entries_count'] = 0;
|
|
|
|
rewind($getid3->fp);
|
|
while ($fileentry = $this->ZIPparseLocalFileHeader($getid3->fp)) {
|
|
$info_zip['entries'][] = $fileentry;
|
|
$info_zip['entries_count']++;
|
|
$info_zip['compressed_size'] += $fileentry['compressed_size'];
|
|
$info_zip['uncompressed_size'] += $fileentry['uncompressed_size'];
|
|
}
|
|
if ($info_zip['entries_count'] == 0) {
|
|
throw new getid3_exception('No Local File Header entries found');
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
private function ZIPparseLocalFileHeader() {
|
|
|
|
// shortcut
|
|
$getid3 = $this->getid3;
|
|
|
|
$local_file_header['offset'] = ftell($getid3->fp);
|
|
|
|
$zip_local_file_header = fread($getid3->fp, 30);
|
|
|
|
$local_file_header['raw']['signature'] = getid3_lib::LittleEndian2Int(substr($zip_local_file_header, 0, 4));
|
|
|
|
// Invalid Local File Header Signature
|
|
if ($local_file_header['raw']['signature'] != 0x04034B50) {
|
|
fseek($getid3->fp, $local_file_header['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly
|
|
return false;
|
|
}
|
|
|
|
getid3_lib::ReadSequence('LittleEndian2Int', $local_file_header['raw'], $zip_local_file_header, 4,
|
|
array (
|
|
'extract_version' => 2,
|
|
'general_flags' => 2,
|
|
'compression_method' => 2,
|
|
'last_mod_file_time' => 2,
|
|
'last_mod_file_date' => 2,
|
|
'crc_32' => 2,
|
|
'compressed_size' => 2,
|
|
'uncompressed_size' => 2,
|
|
'filename_length' => 2,
|
|
'extra_field_length' => 2
|
|
)
|
|
);
|
|
|
|
$local_file_header['extract_version'] = sprintf('%1.1f', $local_file_header['raw']['extract_version'] / 10);
|
|
$local_file_header['host_os'] = $this->ZIPversionOSLookup(($local_file_header['raw']['extract_version'] & 0xFF00) >> 8);
|
|
$local_file_header['compression_method'] = $this->ZIPcompressionMethodLookup($local_file_header['raw']['compression_method']);
|
|
$local_file_header['compressed_size'] = $local_file_header['raw']['compressed_size'];
|
|
$local_file_header['uncompressed_size'] = $local_file_header['raw']['uncompressed_size'];
|
|
$local_file_header['flags'] = $this->ZIPparseGeneralPurposeFlags($local_file_header['raw']['general_flags'], $local_file_header['raw']['compression_method']);
|
|
$local_file_header['last_modified_timestamp'] = $this->DOStime2UNIXtime($local_file_header['raw']['last_mod_file_date'], $local_file_header['raw']['last_mod_file_time']);
|
|
|
|
$filename_extra_field_length = $local_file_header['raw']['filename_length'] + $local_file_header['raw']['extra_field_length'];
|
|
if ($filename_extra_field_length > 0) {
|
|
$zip_local_file_header .= fread($getid3->fp, $filename_extra_field_length);
|
|
|
|
if ($local_file_header['raw']['filename_length'] > 0) {
|
|
$local_file_header['filename'] = substr($zip_local_file_header, 30, $local_file_header['raw']['filename_length']);
|
|
}
|
|
if ($local_file_header['raw']['extra_field_length'] > 0) {
|
|
$local_file_header['raw']['extra_field_data'] = substr($zip_local_file_header, 30 + $local_file_header['raw']['filename_length'], $local_file_header['raw']['extra_field_length']);
|
|
}
|
|
}
|
|
|
|
$local_file_header['data_offset'] = ftell($getid3->fp);
|
|
fseek($getid3->fp, $local_file_header['raw']['compressed_size'], SEEK_CUR);
|
|
|
|
if ($local_file_header['flags']['data_descriptor_used']) {
|
|
$data_descriptor = fread($getid3->fp, 12);
|
|
|
|
getid3_lib::ReadSequence('LittleEndian2Int', $local_file_header['data_descriptor'], $data_descriptor, 0,
|
|
array (
|
|
'crc_32' => 4,
|
|
'compressed_size' => 4,
|
|
'uncompressed_size' => 4
|
|
)
|
|
);
|
|
}
|
|
|
|
return $local_file_header;
|
|
}
|
|
|
|
|
|
|
|
private function ZIPparseCentralDirectory() {
|
|
|
|
// shortcut
|
|
$getid3 = $this->getid3;
|
|
|
|
$central_directory['offset'] = ftell($getid3->fp);
|
|
|
|
$zip_central_directory = fread($getid3->fp, 46);
|
|
|
|
$central_directory['raw']['signature'] = getid3_lib::LittleEndian2Int(substr($zip_central_directory, 0, 4));
|
|
|
|
// invalid Central Directory Signature
|
|
if ($central_directory['raw']['signature'] != 0x02014B50) {
|
|
fseek($getid3->fp, $central_directory['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly
|
|
return false;
|
|
}
|
|
|
|
getid3_lib::ReadSequence('LittleEndian2Int', $central_directory['raw'], $zip_central_directory, 4,
|
|
array (
|
|
'create_version' => 2,
|
|
'extract_version' => 2,
|
|
'general_flags' => 2,
|
|
'compression_method' => 2,
|
|
'last_mod_file_time' => 2,
|
|
'last_mod_file_date' => 2,
|
|
'crc_32' => 4,
|
|
'compressed_size' => 4,
|
|
'uncompressed_size' => 4,
|
|
'filename_length' => 2,
|
|
'extra_field_length' => 2,
|
|
'file_comment_length' => 2,
|
|
'disk_number_start' => 2,
|
|
'internal_file_attrib' => 2,
|
|
'external_file_attrib' => 4,
|
|
'local_header_offset' => 4
|
|
)
|
|
);
|
|
|
|
$central_directory['entry_offset'] = $central_directory['raw']['local_header_offset'];
|
|
$central_directory['create_version'] = sprintf('%1.1f', $central_directory['raw']['create_version'] / 10);
|
|
$central_directory['extract_version'] = sprintf('%1.1f', $central_directory['raw']['extract_version'] / 10);
|
|
$central_directory['host_os'] = $this->ZIPversionOSLookup(($central_directory['raw']['extract_version'] & 0xFF00) >> 8);
|
|
$central_directory['compression_method'] = $this->ZIPcompressionMethodLookup($central_directory['raw']['compression_method']);
|
|
$central_directory['compressed_size'] = $central_directory['raw']['compressed_size'];
|
|
$central_directory['uncompressed_size'] = $central_directory['raw']['uncompressed_size'];
|
|
$central_directory['flags'] = $this->ZIPparseGeneralPurposeFlags($central_directory['raw']['general_flags'], $central_directory['raw']['compression_method']);
|
|
$central_directory['last_modified_timestamp'] = $this->DOStime2UNIXtime($central_directory['raw']['last_mod_file_date'], $central_directory['raw']['last_mod_file_time']);
|
|
|
|
$filename_extra_field_comment_length = $central_directory['raw']['filename_length'] + $central_directory['raw']['extra_field_length'] + $central_directory['raw']['file_comment_length'];
|
|
if ($filename_extra_field_comment_length > 0) {
|
|
$filename_extra_field_comment = fread($getid3->fp, $filename_extra_field_comment_length);
|
|
|
|
if ($central_directory['raw']['filename_length'] > 0) {
|
|
$central_directory['filename']= substr($filename_extra_field_comment, 0, $central_directory['raw']['filename_length']);
|
|
}
|
|
if ($central_directory['raw']['extra_field_length'] > 0) {
|
|
$central_directory['raw']['extra_field_data'] = substr($filename_extra_field_comment, $central_directory['raw']['filename_length'], $central_directory['raw']['extra_field_length']);
|
|
}
|
|
if ($central_directory['raw']['file_comment_length'] > 0) {
|
|
$central_directory['file_comment'] = substr($filename_extra_field_comment, $central_directory['raw']['filename_length'] + $central_directory['raw']['extra_field_length'], $central_directory['raw']['file_comment_length']);
|
|
}
|
|
}
|
|
|
|
return $central_directory;
|
|
}
|
|
|
|
|
|
|
|
private function ZIPparseEndOfCentralDirectory() {
|
|
|
|
// shortcut
|
|
$getid3 = $this->getid3;
|
|
|
|
$end_of_central_directory['offset'] = ftell($getid3->fp);
|
|
|
|
$zip_end_of_central_directory = fread($getid3->fp, 22);
|
|
|
|
$end_of_central_directory['signature'] = getid3_lib::LittleEndian2Int(substr($zip_end_of_central_directory, 0, 4));
|
|
|
|
// invalid End Of Central Directory Signature
|
|
if ($end_of_central_directory['signature'] != 0x06054B50) {
|
|
fseek($getid3->fp, $end_of_central_directory['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly
|
|
return false;
|
|
}
|
|
|
|
getid3_lib::ReadSequence('LittleEndian2Int', $end_of_central_directory, $zip_end_of_central_directory, 4,
|
|
array (
|
|
'disk_number_current' => 2,
|
|
'disk_number_start_directory' => 2,
|
|
'directory_entries_this_disk' => 2,
|
|
'directory_entries_total' => 2,
|
|
'directory_size' => 4,
|
|
'directory_offset' => 4,
|
|
'comment_length' => 2
|
|
)
|
|
);
|
|
|
|
if ($end_of_central_directory['comment_length'] > 0) {
|
|
$end_of_central_directory['comment'] = fread($getid3->fp, $end_of_central_directory['comment_length']);
|
|
}
|
|
|
|
return $end_of_central_directory;
|
|
}
|
|
|
|
|
|
|
|
public static function ZIPparseGeneralPurposeFlags($flag_bytes, $compression_method) {
|
|
|
|
$parsed_flags['encrypted'] = (bool)($flag_bytes & 0x0001);
|
|
|
|
switch ($compression_method) {
|
|
case 6:
|
|
$parsed_flags['dictionary_size'] = (($flag_bytes & 0x0002) ? 8192 : 4096);
|
|
$parsed_flags['shannon_fano_trees'] = (($flag_bytes & 0x0004) ? 3 : 2);
|
|
break;
|
|
|
|
case 8:
|
|
case 9:
|
|
switch (($flag_bytes & 0x0006) >> 1) {
|
|
case 0:
|
|
$parsed_flags['compression_speed'] = 'normal';
|
|
break;
|
|
case 1:
|
|
$parsed_flags['compression_speed'] = 'maximum';
|
|
break;
|
|
case 2:
|
|
$parsed_flags['compression_speed'] = 'fast';
|
|
break;
|
|
case 3:
|
|
$parsed_flags['compression_speed'] = 'superfast';
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
$parsed_flags['data_descriptor_used'] = (bool)($flag_bytes & 0x0008);
|
|
|
|
return $parsed_flags;
|
|
}
|
|
|
|
|
|
|
|
public static function ZIPversionOSLookup($index) {
|
|
|
|
static $lookup = array (
|
|
0 => 'MS-DOS and OS/2 (FAT / VFAT / FAT32 file systems)',
|
|
1 => 'Amiga',
|
|
2 => 'OpenVMS',
|
|
3 => 'Unix',
|
|
4 => 'VM/CMS',
|
|
5 => 'Atari ST',
|
|
6 => 'OS/2 H.P.F.S.',
|
|
7 => 'Macintosh',
|
|
8 => 'Z-System',
|
|
9 => 'CP/M',
|
|
10 => 'Windows NTFS',
|
|
11 => 'MVS',
|
|
12 => 'VSE',
|
|
13 => 'Acorn Risc',
|
|
14 => 'VFAT',
|
|
15 => 'Alternate MVS',
|
|
16 => 'BeOS',
|
|
17 => 'Tandem'
|
|
);
|
|
return (isset($lookup[$index]) ? $lookup[$index] : '[unknown]');
|
|
}
|
|
|
|
|
|
|
|
public static function ZIPcompressionMethodLookup($index) {
|
|
|
|
static $lookup = array (
|
|
0 => 'store',
|
|
1 => 'shrink',
|
|
2 => 'reduce-1',
|
|
3 => 'reduce-2',
|
|
4 => 'reduce-3',
|
|
5 => 'reduce-4',
|
|
6 => 'implode',
|
|
7 => 'tokenize',
|
|
8 => 'deflate',
|
|
9 => 'deflate64',
|
|
10 => 'PKWARE Date Compression Library Imploding'
|
|
);
|
|
return (isset($lookup[$index]) ? $lookup[$index] : '[unknown]');
|
|
}
|
|
|
|
|
|
|
|
public static function DOStime2UNIXtime($DOSdate, $DOStime) {
|
|
|
|
/*
|
|
// wFatDate
|
|
// Specifies the MS-DOS date. The date is a packed 16-bit value with the following format:
|
|
// Bits Contents
|
|
// 0-4 Day of the month (1-31)
|
|
// 5-8 Month (1 = January, 2 = February, and so on)
|
|
// 9-15 Year offset from 1980 (add 1980 to get actual year)
|
|
|
|
$UNIXday = ($DOSdate & 0x001F);
|
|
$UNIXmonth = (($DOSdate & 0x01E0) >> 5);
|
|
$UNIXyear = (($DOSdate & 0xFE00) >> 9) + 1980;
|
|
|
|
// wFatTime
|
|
// Specifies the MS-DOS time. The time is a packed 16-bit value with the following format:
|
|
// Bits Contents
|
|
// 0-4 Second divided by 2
|
|
// 5-10 Minute (0-59)
|
|
// 11-15 Hour (0-23 on a 24-hour clock)
|
|
|
|
$UNIXsecond = ($DOStime & 0x001F) * 2;
|
|
$UNIXminute = (($DOStime & 0x07E0) >> 5);
|
|
$UNIXhour = (($DOStime & 0xF800) >> 11);
|
|
|
|
return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
|
|
*/
|
|
return gmmktime(($DOStime & 0xF800) >> 11, ($DOStime & 0x07E0) >> 5, ($DOStime & 0x001F) * 2, ($DOSdate & 0x01E0) >> 5, $DOSdate & 0x001F, (($DOSdate & 0xFE00) >> 9) + 1980);
|
|
}
|
|
|
|
|
|
|
|
public static function array_merge_clobber($array1, $array2) {
|
|
|
|
// written by kcØhireability*com
|
|
// taken from http://www.php.net/manual/en/function.array-merge-recursive.php
|
|
|
|
if (!is_array($array1) || !is_array($array2)) {
|
|
return false;
|
|
}
|
|
|
|
$newarray = $array1;
|
|
foreach ($array2 as $key => $val) {
|
|
if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
|
|
$newarray[$key] = getid3_zip::array_merge_clobber($newarray[$key], $val);
|
|
} else {
|
|
$newarray[$key] = $val;
|
|
}
|
|
}
|
|
return $newarray;
|
|
}
|
|
|
|
|
|
|
|
public static function CreateDeepArray($array_path, $separator, $value) {
|
|
|
|
// assigns $value to a nested array path:
|
|
// $foo = getid3_lib::CreateDeepArray('/path/to/my', '/', 'file.txt')
|
|
// is the same as:
|
|
// $foo = array ('path'=>array('to'=>'array('my'=>array('file.txt'))));
|
|
// or
|
|
// $foo['path']['to']['my'] = 'file.txt';
|
|
|
|
while ($array_path{0} == $separator) {
|
|
$array_path = substr($array_path, 1);
|
|
}
|
|
if (($pos = strpos($array_path, $separator)) !== false) {
|
|
return array (substr($array_path, 0, $pos) => getid3_zip::CreateDeepArray(substr($array_path, $pos + 1), $separator, $value));
|
|
}
|
|
|
|
return array ($array_path => $value);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
?>
|