<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org>               //
//  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.szip.php                                     //
// module for analyzing SZIP compressed files                  //
// dependencies: NONE                                          //
//                                                            ///
/////////////////////////////////////////////////////////////////


class getid3_szip extends getid3_handler
{

    public function 
Analyze() {
        
$info = &$this->getid3->info;

        
$this->fseek($info['avdataoffset']);
        
$SZIPHeader $this->fread(6);
        if (
substr($SZIPHeader04) != "SZ\x0A\x04") {
            
$info['error'][] = 'Expecting "53 5A 0A 04" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($SZIPHeader04)).'"';
            return 
false;
        }
        
$info['fileformat']            = 'szip';
        
$info['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader41));
        
$info['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader51));
$info['error'][] = 'SZIP parsing not enabled in this version of getID3() ['.$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(4SEEK_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$BHheaderoffsetstrcspn($BHheaderdata"\x00"));
                        
$BHheaderoffset += (strlen($BHdataArray['filename']) + 1);

                        
$BHdataArray['owner'] = substr($BHheaderdata$BHheaderoffsetstrcspn($BHheaderdata"\x00"));
                        
$BHheaderoffset += (strlen($BHdataArray['owner']) + 1);

                        
$BHdataArray['group'] = substr($BHheaderdata$BHheaderoffsetstrcspn($BHheaderdata"\x00"));
                        
$BHheaderoffset += (strlen($BHdataArray['group']) + 1);

                        
$BHdataArray['filelength'] = getid3_lib::BigEndian2Int(substr($BHheaderdata$BHheaderoffset3));
                        
$BHheaderoffset += 3;

                        
$BHdataArray['access_flags'] = getid3_lib::BigEndian2Int(substr($BHheaderdata$BHheaderoffset2));
                        
$BHheaderoffset += 2;

                        
$BHdataArray['creation_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata$BHheaderoffset4));
                        
$BHheaderoffset += 4;

                        
$BHdataArray['modification_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata$BHheaderoffset4));
                        
$BHheaderoffset += 4;

                        
$BHdataArray['access_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata$BHheaderoffset4));
                        
$BHheaderoffset += 4;

                        
$info['szip']['BH'][] = $BHdataArray;
                    }
                    break;

                default:
                    break 
2;
            }
        }

        return 
true;

    }

}