[3318] | 1 | <?php |
---|
| 2 | // +----------------------------------------------------------------------+ |
---|
| 3 | // | PHP version 5 | |
---|
| 4 | // +----------------------------------------------------------------------+ |
---|
| 5 | // | Copyright (c) 2002-2006 James Heinrich, Allan Hansen | |
---|
| 6 | // +----------------------------------------------------------------------+ |
---|
| 7 | // | This source file is subject to version 2 of the GPL license, | |
---|
| 8 | // | that is bundled with this package in the file license.txt and is | |
---|
| 9 | // | available through the world-wide-web at the following url: | |
---|
| 10 | // | http://www.gnu.org/copyleft/gpl.html | |
---|
| 11 | // +----------------------------------------------------------------------+ |
---|
| 12 | // | getID3() - http://getid3.sourceforge.net or http://www.getid3.org | |
---|
| 13 | // +----------------------------------------------------------------------+ |
---|
| 14 | // | Authors: James Heinrich <infoØgetid3*org> | |
---|
| 15 | // | Allan Hansen <ahØartemis*dk> | |
---|
| 16 | // +----------------------------------------------------------------------+ |
---|
| 17 | // | module.archive.szip.php | |
---|
| 18 | // | module for analyzing SZIP compressed files | |
---|
| 19 | // | dependencies: NONE | |
---|
| 20 | // +----------------------------------------------------------------------+ |
---|
| 21 | // |
---|
| 22 | // $Id: module.archive.szip.php 3318 2009-05-20 21:54:10Z vdigital $ |
---|
| 23 | |
---|
| 24 | |
---|
| 25 | |
---|
| 26 | class getid3_szip extends getid3_handler |
---|
| 27 | { |
---|
| 28 | |
---|
| 29 | public function Analyze() { |
---|
| 30 | |
---|
| 31 | $getid3 = $this->getid3; |
---|
| 32 | |
---|
| 33 | fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); |
---|
| 34 | $szip_rkau = fread($getid3->fp, 6); |
---|
| 35 | |
---|
| 36 | // Magic bytes: 'SZ'."\x0A\x04" |
---|
| 37 | |
---|
| 38 | $getid3->info['fileformat'] = 'szip'; |
---|
| 39 | |
---|
| 40 | $getid3->info['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($szip_rkau, 4, 1)); |
---|
| 41 | $getid3->info['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($szip_rkau, 5, 1)); |
---|
| 42 | |
---|
| 43 | while (!feof($getid3->fp)) { |
---|
| 44 | $next_block_id = fread($getid3->fp, 2); |
---|
| 45 | switch ($next_block_id) { |
---|
| 46 | case 'SZ': |
---|
| 47 | // Note that szip files can be concatenated, this has the same effect as |
---|
| 48 | // concatenating the files. this also means that global header blocks |
---|
| 49 | // might be present between directory/data blocks. |
---|
| 50 | fseek($getid3->fp, 4, SEEK_CUR); |
---|
| 51 | break; |
---|
| 52 | |
---|
| 53 | case 'BH': |
---|
| 54 | $bh_header_bytes = getid3_lib::BigEndian2Int(fread($getid3->fp, 3)); |
---|
| 55 | $bh_header_data = fread($getid3->fp, $bh_header_bytes); |
---|
| 56 | $bh_header_offset = 0; |
---|
| 57 | while (strpos($bh_header_data, "\x00", $bh_header_offset) > 0) { |
---|
| 58 | //filename as \0 terminated string (empty string indicates end) |
---|
| 59 | //owner as \0 terminated string (empty is same as last file) |
---|
| 60 | //group as \0 terminated string (empty is same as last file) |
---|
| 61 | //3 byte filelength in this block |
---|
| 62 | //2 byte access flags |
---|
| 63 | //4 byte creation time (like in unix) |
---|
| 64 | //4 byte modification time (like in unix) |
---|
| 65 | //4 byte access time (like in unix) |
---|
| 66 | |
---|
| 67 | $bh_data_array['filename'] = substr($bh_header_data, $bh_header_offset, strcspn($bh_header_data, "\x00")); |
---|
| 68 | $bh_header_offset += (strlen($bh_data_array['filename']) + 1); |
---|
| 69 | |
---|
| 70 | $bh_data_array['owner'] = substr($bh_header_data, $bh_header_offset, strcspn($bh_header_data, "\x00")); |
---|
| 71 | $bh_header_offset += (strlen($bh_data_array['owner']) + 1); |
---|
| 72 | |
---|
| 73 | $bh_data_array['group'] = substr($bh_header_data, $bh_header_offset, strcspn($bh_header_data, "\x00")); |
---|
| 74 | $bh_header_offset += (strlen($bh_data_array['group']) + 1); |
---|
| 75 | |
---|
| 76 | $bh_data_array['filelength'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 3)); |
---|
| 77 | $bh_header_offset += 3; |
---|
| 78 | |
---|
| 79 | $bh_data_array['access_flags'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 2)); |
---|
| 80 | $bh_header_offset += 2; |
---|
| 81 | |
---|
| 82 | $bh_data_array['creation_time'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 4)); |
---|
| 83 | $bh_header_offset += 4; |
---|
| 84 | |
---|
| 85 | $bh_data_array['modification_time'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 4)); |
---|
| 86 | $bh_header_offset += 4; |
---|
| 87 | |
---|
| 88 | $bh_data_array['access_time'] = getid3_lib::BigEndian2Int(substr($bh_header_data, $bh_header_offset, 4)); |
---|
| 89 | $bh_header_offset += 4; |
---|
| 90 | |
---|
| 91 | $getid3->info['szip']['BH'][] = $bh_data_array; |
---|
| 92 | } |
---|
| 93 | break; |
---|
| 94 | |
---|
| 95 | default: |
---|
| 96 | break 2; |
---|
| 97 | } |
---|
| 98 | } |
---|
| 99 | |
---|
| 100 | return true; |
---|
| 101 | } |
---|
| 102 | |
---|
| 103 | } |
---|
| 104 | |
---|
| 105 | ?> |
---|