diff options
Diffstat (limited to 'getid3/module.archive.szip.php')
| -rw-r--r-- | getid3/module.archive.szip.php | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/getid3/module.archive.szip.php b/getid3/module.archive.szip.php new file mode 100644 index 0000000..2513c85 --- /dev/null +++ b/getid3/module.archive.szip.php @@ -0,0 +1,97 @@ +<?php +///////////////////////////////////////////////////////////////// +/// getID3() by James Heinrich <info@getid3.org> // +// available at http://getid3.sourceforge.net // +// or http://www.getid3.org // +///////////////////////////////////////////////////////////////// +// See readme.txt for more details // +///////////////////////////////////////////////////////////////// +// // +// module.archive.szip.php // +// module for analyzing SZIP compressed files // +// dependencies: NONE // +// /// +///////////////////////////////////////////////////////////////// + + +class getid3_szip +{ + + function getid3_szip(&$fd, &$ThisFileInfo) { + + fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); + $SZIPHeader = fread($fd, 6); + if (substr($SZIPHeader, 0, 4) != 'SZ'."\x0A\x04") { + $ThisFileInfo['error'][] = 'Expecting "SZ[x0A][x04]" at offset '.$ThisFileInfo['avdataoffset'].', found "'.substr($SZIPHeader, 0, 4).'"'; + return false; + } + + $ThisFileInfo['fileformat'] = 'szip'; + + $ThisFileInfo['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 4, 1)); + $ThisFileInfo['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 5, 1)); + + while (!feof($fd)) { + $NextBlockID = fread($fd, 2); + switch ($NextBlockID) { + case 'SZ': + // Note that szip files can be concatenated, this has the same effect as + // concatenating the files. this also means that global header blocks + // might be present between directory/data blocks. + fseek($fd, 4, SEEK_CUR); + break; + + case 'BH': + $BHheaderbytes = getid3_lib::BigEndian2Int(fread($fd, 3)); + $BHheaderdata = fread($fd, $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; + + $ThisFileInfo['szip']['BH'][] = $BHdataArray; + } + break; + + default: + break 2; + } + } + + return true; + + } + +} + +?>
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