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263ea48c5b
Shift automatically applies the Laravel coding style - which uses the PSR-2 coding style as a base with some minor additions. You may customize the adopted coding style by adding your own [PHP CS Fixer][1] `.php_cs` config file to your project root. Feel free to use [Shift's Laravel ruleset][2] to help you get started. [1]: https://github.com/FriendsOfPHP/PHP-CS-Fixer [2]: https://gist.github.com/laravel-shift/cab527923ed2a109dda047b97d53c200
203 lines
7.8 KiB
PHP
203 lines
7.8 KiB
PHP
<?php
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/////////////////////////////////////////////////////////////////
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/// getID3() by James Heinrich <info@getid3.org> //
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// available at http://getid3.sourceforge.net //
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// or http://www.getid3.org //
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// also https://github.com/JamesHeinrich/getID3 //
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/////////////////////////////////////////////////////////////////
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// See readme.txt for more details //
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/////////////////////////////////////////////////////////////////
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// //
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// module.archive.tar.php //
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// module for analyzing TAR files //
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// dependencies: NONE //
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// ///
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/////////////////////////////////////////////////////////////////
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// //
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// Module originally written by //
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// Mike Mozolin <teddybearØmail*ru> //
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// //
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/////////////////////////////////////////////////////////////////
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class getid3_tar extends getid3_handler
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{
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public function Analyze()
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{
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$info = &$this->getid3->info;
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$info['fileformat'] = 'tar';
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$info['tar']['files'] = [];
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$unpack_header = 'a100fname/a8mode/a8uid/a8gid/a12size/a12mtime/a8chksum/a1typflag/a100lnkname/a6magic/a2ver/a32uname/a32gname/a8devmaj/a8devmin/a155prefix';
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$null_512k = str_repeat("\x00", 512); // end-of-file marker
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$this->fseek(0);
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while (! feof($this->getid3->fp)) {
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$buffer = $this->fread(512);
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if (strlen($buffer) < 512) {
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break;
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}
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// check the block
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$checksum = 0;
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for ($i = 0; $i < 148; $i++) {
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$checksum += ord($buffer[$i]);
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}
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for ($i = 148; $i < 156; $i++) {
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$checksum += ord(' ');
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}
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for ($i = 156; $i < 512; $i++) {
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$checksum += ord($buffer[$i]);
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}
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$attr = unpack($unpack_header, $buffer);
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$name = (isset($attr['fname']) ? trim($attr['fname']) : '');
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$mode = octdec(isset($attr['mode']) ? trim($attr['mode']) : '');
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$uid = octdec(isset($attr['uid']) ? trim($attr['uid']) : '');
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$gid = octdec(isset($attr['gid']) ? trim($attr['gid']) : '');
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$size = octdec(isset($attr['size']) ? trim($attr['size']) : '');
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$mtime = octdec(isset($attr['mtime']) ? trim($attr['mtime']) : '');
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$chksum = octdec(isset($attr['chksum']) ? trim($attr['chksum']) : '');
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$typflag = (isset($attr['typflag']) ? trim($attr['typflag']) : '');
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$lnkname = (isset($attr['lnkname']) ? trim($attr['lnkname']) : '');
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$magic = (isset($attr['magic']) ? trim($attr['magic']) : '');
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$ver = (isset($attr['ver']) ? trim($attr['ver']) : '');
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$uname = (isset($attr['uname']) ? trim($attr['uname']) : '');
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$gname = (isset($attr['gname']) ? trim($attr['gname']) : '');
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$devmaj = octdec(isset($attr['devmaj']) ? trim($attr['devmaj']) : '');
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$devmin = octdec(isset($attr['devmin']) ? trim($attr['devmin']) : '');
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$prefix = (isset($attr['prefix']) ? trim($attr['prefix']) : '');
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if (($checksum == 256) && ($chksum == 0)) {
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// EOF Found
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break;
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}
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if ($prefix) {
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$name = $prefix.'/'.$name;
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}
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if ((preg_match('#/$#', $name)) && ! $name) {
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$typeflag = 5;
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}
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if ($buffer == $null_512k) {
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// it's the end of the tar-file...
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break;
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}
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// Read to the next chunk
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$this->fseek($size, SEEK_CUR);
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$diff = $size % 512;
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if ($diff != 0) {
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// Padding, throw away
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$this->fseek((512 - $diff), SEEK_CUR);
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}
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// Protect against tar-files with garbage at the end
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if ($name == '') {
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break;
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}
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$info['tar']['file_details'][$name] = [
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'name' => $name,
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'mode_raw' => $mode,
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'mode' => self::display_perms($mode),
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'uid' => $uid,
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'gid' => $gid,
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'size' => $size,
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'mtime' => $mtime,
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'chksum' => $chksum,
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'typeflag' => self::get_flag_type($typflag),
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'linkname' => $lnkname,
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'magic' => $magic,
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'version' => $ver,
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'uname' => $uname,
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'gname' => $gname,
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'devmajor' => $devmaj,
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'devminor' => $devmin,
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];
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$info['tar']['files'] = getid3_lib::array_merge_clobber($info['tar']['files'], getid3_lib::CreateDeepArray($info['tar']['file_details'][$name]['name'], '/', $size));
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}
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return true;
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}
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// Parses the file mode to file permissions
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public function display_perms($mode)
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{
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// Determine Type
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if ($mode & 0x1000) {
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$type = 'p';
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} // FIFO pipe
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elseif ($mode & 0x2000) {
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$type = 'c';
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} // Character special
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elseif ($mode & 0x4000) {
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$type = 'd';
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} // Directory
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elseif ($mode & 0x6000) {
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$type = 'b';
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} // Block special
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elseif ($mode & 0x8000) {
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$type = '-';
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} // Regular
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elseif ($mode & 0xA000) {
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$type = 'l';
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} // Symbolic Link
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elseif ($mode & 0xC000) {
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$type = 's';
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} // Socket
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else {
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$type = 'u';
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} // UNKNOWN
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// Determine permissions
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$owner['read'] = (($mode & 00400) ? 'r' : '-');
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$owner['write'] = (($mode & 00200) ? 'w' : '-');
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$owner['execute'] = (($mode & 00100) ? 'x' : '-');
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$group['read'] = (($mode & 00040) ? 'r' : '-');
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$group['write'] = (($mode & 00020) ? 'w' : '-');
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$group['execute'] = (($mode & 00010) ? 'x' : '-');
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$world['read'] = (($mode & 00004) ? 'r' : '-');
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$world['write'] = (($mode & 00002) ? 'w' : '-');
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$world['execute'] = (($mode & 00001) ? 'x' : '-');
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// Adjust for SUID, SGID and sticky bit
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if ($mode & 0x800) {
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$owner['execute'] = ($owner['execute'] == 'x') ? 's' : 'S';
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}
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if ($mode & 0x400) {
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$group['execute'] = ($group['execute'] == 'x') ? 's' : 'S';
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}
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if ($mode & 0x200) {
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$world['execute'] = ($world['execute'] == 'x') ? 't' : 'T';
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}
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$s = sprintf('%1s', $type);
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$s .= sprintf('%1s%1s%1s', $owner['read'], $owner['write'], $owner['execute']);
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$s .= sprintf('%1s%1s%1s', $group['read'], $group['write'], $group['execute']);
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$s .= sprintf('%1s%1s%1s'."\n", $world['read'], $world['write'], $world['execute']);
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return $s;
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}
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// Converts the file type
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public function get_flag_type($typflag)
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{
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static $flag_types = [
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'0' => 'LF_NORMAL',
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'1' => 'LF_LINK',
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'2' => 'LF_SYNLINK',
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'3' => 'LF_CHR',
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'4' => 'LF_BLK',
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'5' => 'LF_DIR',
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'6' => 'LF_FIFO',
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'7' => 'LF_CONFIG',
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'D' => 'LF_DUMPDIR',
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'K' => 'LF_LONGLINK',
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'L' => 'LF_LONGNAME',
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'M' => 'LF_MULTIVOL',
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'N' => 'LF_NAMES',
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'S' => 'LF_SPARSE',
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'V' => 'LF_VOLHDR',
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];
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return isset($flag_types[$typflag]) ? $flag_types[$typflag] : '';
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}
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}
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