name : module.archive.szip.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.szip.php // // module for analyzing SZIP compressed files // // dependencies: NONE // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } class getid3_szip extends getid3_handler { /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; $this->fseek($info['avdataoffset']); $SZIPHeader = $this->fread(6); if (substr($SZIPHeader, 0, 4) != "SZ\x0A\x04") { $this->error('Expecting "53 5A 0A 04" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($SZIPHeader, 0, 4)).'"'); return false; } $info['fileformat'] = 'szip'; $info['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 4, 1)); $info['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 5, 1)); $this->error('SZIP parsing not enabled in this version of getID3() ['.$this->getid3->version().']'); return false; while (!$this->feof()) { $NextBlockID = $this->fread(2); switch ($NextBlockID) { case 'SZ': // Note that szip files can be concatenated, this has the same effect as // concatenating the files. this also means that global header blocks // might be present between directory/data blocks. $this->fseek(4, SEEK_CUR); break; case 'BH': $BHheaderbytes = getid3_lib::BigEndian2Int($this->fread(3)); $BHheaderdata = $this->fread($BHheaderbytes); $BHheaderoffset = 0; while (strpos($BHheaderdata, "\x00", $BHheaderoffset) > 0) { //filename as \0 terminated string (empty string indicates end) //owner as \0 terminated string (empty is same as last file) //group as \0 terminated string (empty is same as last file) //3 byte filelength in this block //2 byte access flags //4 byte creation time (like in unix) //4 byte modification time (like in unix) //4 byte access time (like in unix) $BHdataArray['filename'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00")); $BHheaderoffset += (strlen($BHdataArray['filename']) + 1); $BHdataArray['owner'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00")); $BHheaderoffset += (strlen($BHdataArray['owner']) + 1); $BHdataArray['group'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00")); $BHheaderoffset += (strlen($BHdataArray['group']) + 1); $BHdataArray['filelength'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 3)); $BHheaderoffset += 3; $BHdataArray['access_flags'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 2)); $BHheaderoffset += 2; $BHdataArray['creation_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4)); $BHheaderoffset += 4; $BHdataArray['modification_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4)); $BHheaderoffset += 4; $BHdataArray['access_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4)); $BHheaderoffset += 4; $info['szip']['BH'][] = $BHdataArray; } break; default: break 2; } } return true; } }