diff options
Diffstat (limited to 'getid3/module.archive.tar.php')
| -rw-r--r-- | getid3/module.archive.tar.php | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/getid3/module.archive.tar.php b/getid3/module.archive.tar.php new file mode 100644 index 0000000..aa4390f --- /dev/null +++ b/getid3/module.archive.tar.php @@ -0,0 +1,175 @@ +<?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.tar.php // +// module for analyzing TAR files // +// dependencies: NONE // +// /// +///////////////////////////////////////////////////////////////// +// // +// Module originally written by // +// Mike Mozolin <teddybearØmail*ru> // +// // +///////////////////////////////////////////////////////////////// + + +class getid3_tar { + + function getid3_tar(&$fd, &$ThisFileInfo) { + $ThisFileInfo['fileformat'] = 'tar'; + $ThisFileInfo['tar']['files'] = array(); + + $unpack_header = 'a100fname/a8mode/a8uid/a8gid/a12size/a12mtime/a8chksum/a1typflag/a100lnkname/a6magic/a2ver/a32uname/a32gname/a8devmaj/a8devmin/a155prefix'; + $null_512k = str_repeat("\x00", 512); // end-of-file marker + + @fseek($fd, 0); + while (!feof($fd)) { + $buffer = fread($fd, 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); + $name = trim(@$attr['fname']); + $mode = octdec(trim(@$attr['mode'])); + $uid = octdec(trim(@$attr['uid'])); + $gid = octdec(trim(@$attr['gid'])); + $size = octdec(trim(@$attr['size'])); + $mtime = octdec(trim(@$attr['mtime'])); + $chksum = octdec(trim(@$attr['chksum'])); + $typflag = trim(@$attr['typflag']); + $lnkname = trim(@$attr['lnkname']); + $magic = trim(@$attr['magic']); + $ver = trim(@$attr['ver']); + $uname = trim(@$attr['uname']); + $gname = trim(@$attr['gname']); + $devmaj = octdec(trim(@$attr['devmaj'])); + $devmin = octdec(trim(@$attr['devmin'])); + $prefix = trim(@$attr['prefix']); + if (($checksum == 256) && ($chksum == 0)) { + // EOF Found + break; + } + if ($prefix) { + $name = $prefix.'/'.$name; + } + if ((preg_match('#/$#', $name)) && !$name) { + $typeflag = 5; + } + if ($buffer == $null_512k) { + // it's the end of the tar-file... + break; + } + + // Read to the next chunk + fseek($fd, $size, SEEK_CUR); + + $diff = $size % 512; + if ($diff != 0) { + // Padding, throw away + fseek($fd, (512 - $diff), SEEK_CUR); + } + // Protect against tar-files with garbage at the end + if ($name == '') { + break; + } + $ThisFileInfo['tar']['file_details'][$name] = array ( + 'name' => $name, + 'mode_raw' => $mode, + 'mode' => getid3_tar::display_perms($mode), + 'uid' => $uid, + 'gid' => $gid, + 'size' => $size, + 'mtime' => $mtime, + 'chksum' => $chksum, + 'typeflag' => getid3_tar::get_flag_type($typflag), + 'linkname' => $lnkname, + 'magic' => $magic, + 'version' => $ver, + 'uname' => $uname, + 'gname' => $gname, + 'devmajor' => $devmaj, + 'devminor' => $devmin + ); + $ThisFileInfo['tar']['files'] = getid3_lib::array_merge_clobber($ThisFileInfo['tar']['files'], getid3_lib::CreateDeepArray($ThisFileInfo['tar']['file_details'][$name]['name'], '/', $size)); + } + return true; + } + + // Parses the file mode to file permissions + function display_perms($mode) { + // Determine Type + if ($mode & 0x1000) $type='p'; // FIFO pipe + elseif ($mode & 0x2000) $type='c'; // Character special + elseif ($mode & 0x4000) $type='d'; // Directory + elseif ($mode & 0x6000) $type='b'; // Block special + elseif ($mode & 0x8000) $type='-'; // Regular + elseif ($mode & 0xA000) $type='l'; // Symbolic Link + elseif ($mode & 0xC000) $type='s'; // Socket + else $type='u'; // UNKNOWN + + // Determine permissions + $owner['read'] = (($mode & 00400) ? 'r' : '-'); + $owner['write'] = (($mode & 00200) ? 'w' : '-'); + $owner['execute'] = (($mode & 00100) ? 'x' : '-'); + $group['read'] = (($mode & 00040) ? 'r' : '-'); + $group['write'] = (($mode & 00020) ? 'w' : '-'); + $group['execute'] = (($mode & 00010) ? 'x' : '-'); + $world['read'] = (($mode & 00004) ? 'r' : '-'); + $world['write'] = (($mode & 00002) ? 'w' : '-'); + $world['execute'] = (($mode & 00001) ? 'x' : '-'); + + // Adjust for SUID, SGID and sticky bit + if ($mode & 0x800) $owner['execute'] = ($owner['execute'] == 'x') ? 's' : 'S'; + if ($mode & 0x400) $group['execute'] = ($group['execute'] == 'x') ? 's' : 'S'; + if ($mode & 0x200) $world['execute'] = ($world['execute'] == 'x') ? 't' : 'T'; + + $s = sprintf('%1s', $type); + $s .= sprintf('%1s%1s%1s', $owner['read'], $owner['write'], $owner['execute']); + $s .= sprintf('%1s%1s%1s', $group['read'], $group['write'], $group['execute']); + $s .= sprintf('%1s%1s%1s'."\n", $world['read'], $world['write'], $world['execute']); + return $s; + } + + // Converts the file type + function get_flag_type($typflag) { + static $flag_types = array( + '0' => 'LF_NORMAL', + '1' => 'LF_LINK', + '2' => 'LF_SYNLINK', + '3' => 'LF_CHR', + '4' => 'LF_BLK', + '5' => 'LF_DIR', + '6' => 'LF_FIFO', + '7' => 'LF_CONFIG', + 'D' => 'LF_DUMPDIR', + 'K' => 'LF_LONGLINK', + 'L' => 'LF_LONGNAME', + 'M' => 'LF_MULTIVOL', + 'N' => 'LF_NAMES', + 'S' => 'LF_SPARSE', + 'V' => 'LF_VOLHDR' + ); + return @$flag_types[$typflag]; + } + +} + +?>
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