3 /////////////////////////////////////////////////////////////////
4 /// getID3() by James Heinrich <info@getid3.org> //
5 // available at https://github.com/JamesHeinrich/getID3 //
6 // or https://www.getid3.org //
7 // or http://getid3.sourceforge.net //
8 // see readme.txt for more details //
9 /////////////////////////////////////////////////////////////////
11 // module.archive.hpk.php //
12 // module for analyzing HPK files //
13 // dependencies: NONE //
15 /////////////////////////////////////////////////////////////////
17 if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
21 class getid3_hpk
extends getid3_handler
26 public function Analyze() {
27 $info = &$this->getid3
->info
;
29 $info['fileformat'] = 'hpk';
31 $this->fseek($info['avdataoffset']);
32 $HPKheader = $this->fread(36);
34 if (substr($HPKheader, 0, 4) == 'BPUL') {
36 $info['hpk']['header']['signature'] = substr($HPKheader, 0, 4);
37 $info['hpk']['header']['data_offset'] = getid3_lib
::LittleEndian2Int(substr($HPKheader, 4, 4));
38 $info['hpk']['header']['fragments_per_file'] = getid3_lib
::LittleEndian2Int(substr($HPKheader, 8, 4));
39 //$info['hpk']['header']['unknown1'] = getid3_lib::LittleEndian2Int(substr($HPKheader, 12, 4));
40 $info['hpk']['header']['fragments_residual_offset'] = getid3_lib
::LittleEndian2Int(substr($HPKheader, 16, 4));
41 $info['hpk']['header']['fragments_residual_count'] = getid3_lib
::LittleEndian2Int(substr($HPKheader, 20, 4));
42 //$info['hpk']['header']['unknown2'] = getid3_lib::LittleEndian2Int(substr($HPKheader, 24, 4));
43 $info['hpk']['header']['fragmented_filesystem_offset'] = getid3_lib
::LittleEndian2Int(substr($HPKheader, 28, 4));
44 $info['hpk']['header']['fragmented_filesystem_length'] = getid3_lib
::LittleEndian2Int(substr($HPKheader, 32, 4));
46 $info['hpk']['header']['filesystem_entries'] = $info['hpk']['header']['fragmented_filesystem_length'] / ($info['hpk']['header']['fragments_per_file'] * 8);
47 $this->fseek($info['hpk']['header']['fragmented_filesystem_offset']);
48 for ($i = 0; $i < $info['hpk']['header']['filesystem_entries']; $i++
) {
49 $offset = getid3_lib
::LittleEndian2Int($this->fread(4));
50 $length = getid3_lib
::LittleEndian2Int($this->fread(4));
51 $info['hpk']['filesystem'][$i] = array('offset' => $offset, 'length' => $length);
54 $this->error('HPK parsing incomplete (and mostly broken) in this version of getID3() ['.$this->getid3
->version().']');
59 foreach ($info['hpk']['filesystem'] as $key => $filesystemdata) {
60 $this->fseek($filesystemdata['offset']);
61 $first4 = $this->fread(4);
62 if (($first4 == 'LZ4 ') || ($first4 == 'ZLIB')) {
63 // actual data, ignore
64 $info['hpk']['toc'][$key] = array(
65 'filename' => ltrim(implode('/', $dirs).'/'.$filename, '/'),
66 'offset' => $filesystemdata['offset'],
67 'length' => $filesystemdata['length'],
72 $fragment_index = getid3_lib::LittleEndian2Int($first4);
73 $fragment_type = getid3_lib::LittleEndian2Int($this->fread(4)); // file = 0, directory = 1
74 $name_length = getid3_lib::LittleEndian2Int($this->fread(2));
75 if ($fragment_type == 1) {
76 $dirs[] = $this->fread($name_length);
78 $filename = $this->fread($name_length);
85 $this->error('Expecting "BPUL" at offset '.$info['avdataoffset'].', found "'.getid3_lib
::PrintHexBytes(substr($HPKheader, 0, 4)).'"');