name : module.archive.7zip.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.7zip.php // // module for analyzing 7zip files // // dependencies: NONE // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } class getid3_7zip extends getid3_handler { /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; $this->fseek($info['avdataoffset']); $z7header = $this->fread(32); // https://py7zr.readthedocs.io/en/latest/archive_format.html $info['7zip']['header']['magic'] = substr($z7header, 0, 6); if ($info['7zip']['header']['magic'] != '7z'."\xBC\xAF\x27\x1C") { $this->error('Invalid 7zip stream header magic (expecting 37 7A BC AF 27 1C, found '.getid3_lib::PrintHexBytes($info['7zip']['header']['magic']).') at offset '.$info['avdataoffset']); return false; } $info['fileformat'] = '7zip'; $info['7zip']['header']['version_major'] = getid3_lib::LittleEndian2Int(substr($z7header, 6, 1)); // always 0x00 (?) $info['7zip']['header']['version_minor'] = getid3_lib::LittleEndian2Int(substr($z7header, 7, 1)); // always 0x04 (?) $info['7zip']['header']['start_header_crc'] = getid3_lib::LittleEndian2Int(substr($z7header, 8, 4)); $info['7zip']['header']['next_header_offset'] = getid3_lib::LittleEndian2Int(substr($z7header, 12, 8)); $info['7zip']['header']['next_header_size'] = getid3_lib::LittleEndian2Int(substr($z7header, 20, 8)); $info['7zip']['header']['next_header_crc'] = getid3_lib::LittleEndian2Int(substr($z7header, 28, 4)); $this->error('7zip parsing not enabled in this version of getID3() ['.$this->getid3->version().']'); return false; } }