mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-03 09:49:30 +02:00
105 lines
No EOL
5.1 KiB
PHP
105 lines
No EOL
5.1 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP version 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2 of the GPL license, |
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// | that is bundled with this package in the file license.txt and is |
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// | available through the world-wide-web at the following url: |
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// | http://www.gnu.org/copyleft/gpl.html |
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// +----------------------------------------------------------------------+
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// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org |
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// +----------------------------------------------------------------------+
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// | Authors: James Heinrich <infoØgetid3*org> |
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// | Allan Hansen <ahØartemis*dk> |
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// +----------------------------------------------------------------------+
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// | module.archive.szip.php |
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// | module for analyzing SZIP compressed files |
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// | dependencies: NONE |
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// +----------------------------------------------------------------------+
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//
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// $Id: module.archive.szip.php,v 1.2 2006/11/02 10:48:00 ah Exp $
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class getid3_szip extends getid3_handler
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{
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public function Analyze() {
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$getid3 = $this->getid3;
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fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET);
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$szip_rkau = fread($getid3->fp, 6);
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// Magic bytes: 'SZ'."\x0A\x04"
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$getid3->info['fileformat'] = 'szip';
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$getid3->info['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($szip_rkau, 4, 1));
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$getid3->info['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($szip_rkau, 5, 1));
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while (!feof($getid3->fp)) {
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$next_block_id = fread($getid3->fp, 2);
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switch ($next_block_id) {
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case 'SZ':
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// Note that szip files can be concatenated, this has the same effect as
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// concatenating the files. this also means that global header blocks
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// might be present between directory/data blocks.
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fseek($getid3->fp, 4, SEEK_CUR);
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break;
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case 'BH':
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$bh_header_bytes = getid3_lib::BigEndian2Int(fread($getid3->fp, 3));
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$bh_header_data = fread($getid3->fp, $bh_header_bytes);
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$bh_header_offset = 0;
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while (strpos($bh_header_data, "\x00", $bh_header_offset) > 0) {
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//filename as \0 terminated string (empty string indicates end)
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//owner as \0 terminated string (empty is same as last file)
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//group as \0 terminated string (empty is same as last file)
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//3 byte filelength in this block
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//2 byte access flags
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//4 byte creation time (like in unix)
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//4 byte modification time (like in unix)
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//4 byte access time (like in unix)
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$bh_data_array['filename'] = substr($bh_header_data, $bh_header_offset, strcspn($bh_header_data, "\x00"));
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$bh_header_offset += (strlen($bh_data_array['filename']) + 1);
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$bh_data_array['owner'] = substr($bh_header_data, $bh_header_offset, strcspn($bh_header_data, "\x00"));
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$bh_header_offset += (strlen($bh_data_array['owner']) + 1);
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$bh_data_array['group'] = substr($bh_header_data, $bh_header_offset, strcspn($bh_header_data, "\x00"));
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$bh_header_offset += (strlen($bh_data_array['group']) + 1);
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$bh_data_array['filelength'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 3));
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$bh_header_offset += 3;
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$bh_data_array['access_flags'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 2));
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$bh_header_offset += 2;
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$bh_data_array['creation_time'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 4));
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$bh_header_offset += 4;
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$bh_data_array['modification_time'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 4));
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$bh_header_offset += 4;
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$bh_data_array['access_time'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 4));
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$bh_header_offset += 4;
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$getid3->info['szip']['BH'][] = $bh_data_array;
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}
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break;
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default:
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break 2;
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}
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}
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return true;
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}
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}
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?>
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