X-Git-Url: http://git.cyclocoop.org/?a=blobdiff_plain;f=www%2Fplugins-dist%2Fmedias%2Flib%2Fgetid3%2Fmodule.archive.gzip.php;fp=www%2Fplugins-dist%2Fmedias%2Flib%2Fgetid3%2Fmodule.archive.gzip.php;h=112a1e6d0977199386967d047800b3aa45bd86d3;hb=4f443dce95ff6f8221c189880a70c74ce1c1f238;hp=0000000000000000000000000000000000000000;hpb=4a628e9b277d3617535f99d663ca79fa2e891177;p=lhc%2Fweb%2Fwww.git diff --git a/www/plugins-dist/medias/lib/getid3/module.archive.gzip.php b/www/plugins-dist/medias/lib/getid3/module.archive.gzip.php new file mode 100644 index 00000000..112a1e6d --- /dev/null +++ b/www/plugins-dist/medias/lib/getid3/module.archive.gzip.php @@ -0,0 +1,281 @@ + // +// available at http://getid3.sourceforge.net // +// or http://www.getid3.org // +// also https://github.com/JamesHeinrich/getID3 // +///////////////////////////////////////////////////////////////// +// See readme.txt for more details // +///////////////////////////////////////////////////////////////// +// // +// module.archive.gzip.php // +// module for analyzing GZIP files // +// dependencies: NONE // +// /// +///////////////////////////////////////////////////////////////// +// // +// Module originally written by // +// Mike Mozolin // +// // +///////////////////////////////////////////////////////////////// + + +class getid3_gzip extends getid3_handler { + + // public: Optional file list - disable for speed. + public $option_gzip_parse_contents = false; // decode gzipped files, if possible, and parse recursively (.tar.gz for example) + + public function Analyze() { + $info = &$this->getid3->info; + + $info['fileformat'] = 'gzip'; + + $start_length = 10; + $unpack_header = 'a1id1/a1id2/a1cmethod/a1flags/a4mtime/a1xflags/a1os'; + //+---+---+---+---+---+---+---+---+---+---+ + //|ID1|ID2|CM |FLG| MTIME |XFL|OS | + //+---+---+---+---+---+---+---+---+---+---+ + + if ($info['php_memory_limit'] && ($info['filesize'] > $info['php_memory_limit'])) { + $this->error('File is too large ('.number_format($info['filesize']).' bytes) to read into memory (limit: '.number_format($info['php_memory_limit'] / 1048576).'MB)'); + return false; + } + $this->fseek(0); + $buffer = $this->fread($info['filesize']); + + $arr_members = explode("\x1F\x8B\x08", $buffer); + while (true) { + $is_wrong_members = false; + $num_members = intval(count($arr_members)); + for ($i = 0; $i < $num_members; $i++) { + if (strlen($arr_members[$i]) == 0) { + continue; + } + $buf = "\x1F\x8B\x08".$arr_members[$i]; + + $attr = unpack($unpack_header, substr($buf, 0, $start_length)); + if (!$this->get_os_type(ord($attr['os']))) { + // Merge member with previous if wrong OS type + $arr_members[($i - 1)] .= $buf; + $arr_members[$i] = ''; + $is_wrong_members = true; + continue; + } + } + if (!$is_wrong_members) { + break; + } + } + + $info['gzip']['files'] = array(); + + $fpointer = 0; + $idx = 0; + for ($i = 0; $i < $num_members; $i++) { + if (strlen($arr_members[$i]) == 0) { + continue; + } + $thisInfo = &$info['gzip']['member_header'][++$idx]; + + $buff = "\x1F\x8B\x08".$arr_members[$i]; + + $attr = unpack($unpack_header, substr($buff, 0, $start_length)); + $thisInfo['filemtime'] = getid3_lib::LittleEndian2Int($attr['mtime']); + $thisInfo['raw']['id1'] = ord($attr['cmethod']); + $thisInfo['raw']['id2'] = ord($attr['cmethod']); + $thisInfo['raw']['cmethod'] = ord($attr['cmethod']); + $thisInfo['raw']['os'] = ord($attr['os']); + $thisInfo['raw']['xflags'] = ord($attr['xflags']); + $thisInfo['raw']['flags'] = ord($attr['flags']); + + $thisInfo['flags']['crc16'] = (bool) ($thisInfo['raw']['flags'] & 0x02); + $thisInfo['flags']['extra'] = (bool) ($thisInfo['raw']['flags'] & 0x04); + $thisInfo['flags']['filename'] = (bool) ($thisInfo['raw']['flags'] & 0x08); + $thisInfo['flags']['comment'] = (bool) ($thisInfo['raw']['flags'] & 0x10); + + $thisInfo['compression'] = $this->get_xflag_type($thisInfo['raw']['xflags']); + + $thisInfo['os'] = $this->get_os_type($thisInfo['raw']['os']); + if (!$thisInfo['os']) { + $this->error('Read error on gzip file'); + return false; + } + + $fpointer = 10; + $arr_xsubfield = array(); + // bit 2 - FLG.FEXTRA + //+---+---+=================================+ + //| XLEN |...XLEN bytes of "extra field"...| + //+---+---+=================================+ + if ($thisInfo['flags']['extra']) { + $w_xlen = substr($buff, $fpointer, 2); + $xlen = getid3_lib::LittleEndian2Int($w_xlen); + $fpointer += 2; + + $thisInfo['raw']['xfield'] = substr($buff, $fpointer, $xlen); + // Extra SubFields + //+---+---+---+---+==================================+ + //|SI1|SI2| LEN |... LEN bytes of subfield data ...| + //+---+---+---+---+==================================+ + $idx = 0; + while (true) { + if ($idx >= $xlen) { + break; + } + $si1 = ord(substr($buff, $fpointer + $idx++, 1)); + $si2 = ord(substr($buff, $fpointer + $idx++, 1)); + if (($si1 == 0x41) && ($si2 == 0x70)) { + $w_xsublen = substr($buff, $fpointer + $idx, 2); + $xsublen = getid3_lib::LittleEndian2Int($w_xsublen); + $idx += 2; + $arr_xsubfield[] = substr($buff, $fpointer + $idx, $xsublen); + $idx += $xsublen; + } else { + break; + } + } + $fpointer += $xlen; + } + // bit 3 - FLG.FNAME + //+=========================================+ + //|...original file name, zero-terminated...| + //+=========================================+ + // GZIP files may have only one file, with no filename, so assume original filename is current filename without .gz + $thisInfo['filename'] = preg_replace('#\\.gz$#i', '', $info['filename']); + if ($thisInfo['flags']['filename']) { + $thisInfo['filename'] = ''; + while (true) { + if (ord($buff[$fpointer]) == 0) { + $fpointer++; + break; + } + $thisInfo['filename'] .= $buff[$fpointer]; + $fpointer++; + } + } + // bit 4 - FLG.FCOMMENT + //+===================================+ + //|...file comment, zero-terminated...| + //+===================================+ + if ($thisInfo['flags']['comment']) { + while (true) { + if (ord($buff[$fpointer]) == 0) { + $fpointer++; + break; + } + $thisInfo['comment'] .= $buff[$fpointer]; + $fpointer++; + } + } + // bit 1 - FLG.FHCRC + //+---+---+ + //| CRC16 | + //+---+---+ + if ($thisInfo['flags']['crc16']) { + $w_crc = substr($buff, $fpointer, 2); + $thisInfo['crc16'] = getid3_lib::LittleEndian2Int($w_crc); + $fpointer += 2; + } + // bit 0 - FLG.FTEXT + //if ($thisInfo['raw']['flags'] & 0x01) { + // Ignored... + //} + // bits 5, 6, 7 - reserved + + $thisInfo['crc32'] = getid3_lib::LittleEndian2Int(substr($buff, strlen($buff) - 8, 4)); + $thisInfo['filesize'] = getid3_lib::LittleEndian2Int(substr($buff, strlen($buff) - 4)); + + $info['gzip']['files'] = getid3_lib::array_merge_clobber($info['gzip']['files'], getid3_lib::CreateDeepArray($thisInfo['filename'], '/', $thisInfo['filesize'])); + + if ($this->option_gzip_parse_contents) { + // Try to inflate GZip + $csize = 0; + $inflated = ''; + $chkcrc32 = ''; + if (function_exists('gzinflate')) { + $cdata = substr($buff, $fpointer); + $cdata = substr($cdata, 0, strlen($cdata) - 8); + $csize = strlen($cdata); + $inflated = gzinflate($cdata); + + // Calculate CRC32 for inflated content + $thisInfo['crc32_valid'] = (bool) (sprintf('%u', crc32($inflated)) == $thisInfo['crc32']); + + // determine format + $formattest = substr($inflated, 0, 32774); + $getid3_temp = new getID3(); + $determined_format = $getid3_temp->GetFileFormat($formattest); + unset($getid3_temp); + + // file format is determined + $determined_format['module'] = (isset($determined_format['module']) ? $determined_format['module'] : ''); + switch ($determined_format['module']) { + case 'tar': + // view TAR-file info + if (file_exists(GETID3_INCLUDEPATH.$determined_format['include']) && include_once(GETID3_INCLUDEPATH.$determined_format['include'])) { + if (($temp_tar_filename = tempnam(GETID3_TEMP_DIR, 'getID3')) === false) { + // can't find anywhere to create a temp file, abort + $this->error('Unable to create temp file to parse TAR inside GZIP file'); + break; + } + if ($fp_temp_tar = fopen($temp_tar_filename, 'w+b')) { + fwrite($fp_temp_tar, $inflated); + fclose($fp_temp_tar); + $getid3_temp = new getID3(); + $getid3_temp->openfile($temp_tar_filename); + $getid3_tar = new getid3_tar($getid3_temp); + $getid3_tar->Analyze(); + $info['gzip']['member_header'][$idx]['tar'] = $getid3_temp->info['tar']; + unset($getid3_temp, $getid3_tar); + unlink($temp_tar_filename); + } else { + $this->error('Unable to fopen() temp file to parse TAR inside GZIP file'); + break; + } + } + break; + + case '': + default: + // unknown or unhandled format + break; + } + } + } + } + return true; + } + + // Converts the OS type + public function get_os_type($key) { + static $os_type = array( + '0' => 'FAT filesystem (MS-DOS, OS/2, NT/Win32)', + '1' => 'Amiga', + '2' => 'VMS (or OpenVMS)', + '3' => 'Unix', + '4' => 'VM/CMS', + '5' => 'Atari TOS', + '6' => 'HPFS filesystem (OS/2, NT)', + '7' => 'Macintosh', + '8' => 'Z-System', + '9' => 'CP/M', + '10' => 'TOPS-20', + '11' => 'NTFS filesystem (NT)', + '12' => 'QDOS', + '13' => 'Acorn RISCOS', + '255' => 'unknown' + ); + return (isset($os_type[$key]) ? $os_type[$key] : ''); + } + + // Converts the eXtra FLags + public function get_xflag_type($key) { + static $xflag_type = array( + '0' => 'unknown', + '2' => 'maximum compression', + '4' => 'fastest algorithm' + ); + return (isset($xflag_type[$key]) ? $xflag_type[$key] : ''); + } +} +