name : module.archive.tar.php <?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at https://github.com/JamesHeinrich/getID3 // // or https://www.getid3.org // // or http://getid3.sourceforge.net // // 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> // // // ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } class getid3_tar extends getid3_handler { /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; $info['fileformat'] = 'tar'; $info['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 $this->fseek(0); while (!feof($this->getid3->fp)) { $buffer = $this->fread(512); if (strlen($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); $name = (isset($attr['fname'] ) ? trim($attr['fname'] ) : ''); $mode = octdec(isset($attr['mode'] ) ? trim($attr['mode'] ) : ''); $uid = octdec(isset($attr['uid'] ) ? trim($attr['uid'] ) : ''); $gid = octdec(isset($attr['gid'] ) ? trim($attr['gid'] ) : ''); $size = octdec(isset($attr['size'] ) ? trim($attr['size'] ) : ''); $mtime = octdec(isset($attr['mtime'] ) ? trim($attr['mtime'] ) : ''); $chksum = octdec(isset($attr['chksum'] ) ? trim($attr['chksum'] ) : ''); $typflag = (isset($attr['typflag']) ? trim($attr['typflag']) : ''); $lnkname = (isset($attr['lnkname']) ? trim($attr['lnkname']) : ''); $magic = (isset($attr['magic'] ) ? trim($attr['magic'] ) : ''); $ver = (isset($attr['ver'] ) ? trim($attr['ver'] ) : ''); $uname = (isset($attr['uname'] ) ? trim($attr['uname'] ) : ''); $gname = (isset($attr['gname'] ) ? trim($attr['gname'] ) : ''); $devmaj = octdec(isset($attr['devmaj'] ) ? trim($attr['devmaj'] ) : ''); $devmin = octdec(isset($attr['devmin'] ) ? trim($attr['devmin'] ) : ''); $prefix = (isset($attr['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 $this->fseek($size, SEEK_CUR); $diff = $size % 512; if ($diff != 0) { // Padding, throw away $this->fseek((512 - $diff), SEEK_CUR); } // Protect against tar-files with garbage at the end if ($name == '') { break; } $info['tar']['file_details'][$name] = array ( 'name' => $name, 'mode_raw' => $mode, 'mode' => self::display_perms($mode), 'uid' => $uid, 'gid' => $gid, 'size' => $size, 'mtime' => $mtime, 'chksum' => $chksum, 'typeflag' => self::get_flag_type($typflag), 'linkname' => $lnkname, 'magic' => $magic, 'version' => $ver, 'uname' => $uname, 'gname' => $gname, 'devmajor' => $devmaj, 'devminor' => $devmin ); $info['tar']['files'] = getid3_lib::array_merge_clobber($info['tar']['files'], getid3_lib::CreateDeepArray($info['tar']['file_details'][$name]['name'], '/', $size)); } return true; } /** * Parses the file mode to file permissions. * * @param int $mode * * @return string */ public function display_perms($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 = array(); $group = array(); $world = array(); $owner['read'] = (($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. * * @param string $typflag * * @return mixed|string */ public function get_flag_type($typflag) { static $flag_types = array( '0' => 'LF_NORMAL', '1' => 'LF_LINK', '2' => 'LF_SYNLINK', '3' => 'LF_CHR', '4' => 'LF_BLK', '5' => 'LF_DIR', '6' => 'LF_FIFO', '7' => 'LF_CONFIG', 'D' => 'LF_DUMPDIR', 'K' => 'LF_LONGLINK', 'L' => 'LF_LONGNAME', 'M' => 'LF_MULTIVOL', 'N' => 'LF_NAMES', 'S' => 'LF_SPARSE', 'V' => 'LF_VOLHDR' ); return (isset($flag_types[$typflag]) ? $flag_types[$typflag] : ''); } }