<?php

namespace application\extensions;

// end of the 'zipfile' class

class SimpleUnzip
{

 var $Comment = '';
 var $Entries = array();
 var $Name = '';
 var $Size = 0;
 var $Time = 0;

 function __construct($in_FileName = '')
 {
 if ($in_FileName !== '') {
 $this->ReadFile($in_FileName);
 }
 }

// end of the 'SimpleUnzip' constructor

 function Count()
 {
 return count($this->Entries);
 }

// end of the 'Count()' method

 function GetData($in_Index)
 {
 return $this->Entries[$in_Index]->Data;
 }

// end of the 'GetData()' method

 function GetEntry($in_Index)
 {
 return $this->Entries[$in_Index];
 }

// end of the 'GetEntry()' method

 function GetError($in_Index)
 {
 return $this->Entries[$in_Index]->Error;
 }

// end of the 'GetError()' method

 function GetErrorMsg($in_Index)
 {
 return $this->Entries[$in_Index]->ErrorMsg;
 }

// end of the 'GetErrorMsg()' method

 function GetName($in_Index)
 {
 return $this->Entries[$in_Index]->Name;
 }

// end of the 'GetName()' method

 function GetPath($in_Index)
 {
 return $this->Entries[$in_Index]->Path;
 }

// end of the 'GetPath()' method

 function GetTime($in_Index)
 {
 return $this->Entries[$in_Index]->Time;
 }

// end of the 'GetTime()' method

 function ReadFile($in_FileName)
 {
 $this->Entries = array();

 $this->Name = $in_FileName;
 $this->Time = filemtime($in_FileName);
 $this->Size = filesize($in_FileName);

 $oF = fopen($in_FileName, 'rb');
 $vZ = fread($oF, $this->Size);
 fclose($oF);

 $aE = explode("\x50\x4b\x05\x06", $vZ);


 $aP = unpack('x16/v1CL', $aE[1]);
 $this->Comment = substr($aE[1], 18, $aP['CL']);

 $this->Comment = strtr($this->Comment, array("\r\n" => "\n",
 "\r" => "\n"));

 $aE = explode("\x50\x4b\x01\x02", $vZ);
 $aE = explode("\x50\x4b\x03\x04", $aE[0]);
 array_shift($aE);

 foreach ($aE as $vZ) {
 $aI = array();
 $aI['E'] = 0;
 $aI['EM'] = '';
 $aP = unpack('v1VN/v1GPF/v1CM/v1FT/v1FD/V1CRC/V1CS/V1UCS/v1FNL', $vZ);
 $bE = ($aP['GPF'] && 0x0001) ? TRUE : FALSE;
 $nF = $aP['FNL'];

 if ($aP['GPF'] & 0x0008) {
 $aP1 = unpack('V1CRC/V1CS/V1UCS', substr($vZ, -12));

 $aP['CRC'] = $aP1['CRC'];
 $aP['CS'] = $aP1['CS'];
 $aP['UCS'] = $aP1['UCS'];

 $vZ = substr($vZ, 0, -12);
 }

 $aI['N'] = substr($vZ, 26, $nF);

 if (substr($aI['N'], -1) == '/') {
 continue;
 }

 $aI['P'] = dirname($aI['N']);
 $aI['P'] = $aI['P'] == '.' ? '' : $aI['P'];
 $aI['N'] = basename($aI['N']);

 $vZ = substr($vZ, 26 + $nF);

 if (strlen($vZ) != $aP['CS']) {
 $aI['E'] = 1;
 $aI['EM'] = 'Compressed size is not equal with the value in header information.';
 } else {
 if ($bE) {
 $aI['E'] = 5;
 $aI['EM'] = 'File is encrypted, which is not supported from this class.';
 } else {
 switch ($aP['CM']) {
 case 0: // Stored
 break;

 case 8: // Deflated
 $vZ = gzinflate($vZ);
 break;

 case 12: // BZIP2
 if (!extension_loaded('bz2')) {
 if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
 @dl('php_bz2.dll');
 } else {
 @dl('bz2.so');
 }
 }

 if (extension_loaded('bz2')) {
 $vZ = bzdecompress($vZ);
 } else {
 $aI['E'] = 7;
 $aI['EM'] = "PHP BZIP2 extension not available.";
 }

 break;

 default:
 $aI['E'] = 6;
 $aI['EM'] = "De-/Compression method {$aP['CM']} is not supported.";
 }

 if (!$aI['E']) {
 if ($vZ === FALSE) {
 $aI['E'] = 2;
 $aI['EM'] = 'Decompression of data failed.';
 } else {
 if (strlen($vZ) != $aP['UCS']) {
 $aI['E'] = 3;
 $aI['EM'] = 'Uncompressed size is not equal with the value in header information.';
 } else {
 if (crc32($vZ) != $aP['CRC']) {
 $aI['E'] = 4;
 $aI['EM'] = 'CRC32 checksum is not equal with the value in header information.';
 }
 }
 }
 }
 }
 }

 $aI['D'] = $vZ;

 $aI['T'] = mktime(($aP['FT'] & 0xf800) >> 11, ($aP['FT'] & 0x07e0) >> 5, ($aP['FT'] & 0x001f) << 1, ($aP['FD'] & 0x01e0) >> 5, ($aP['FD'] & 0x001f), (($aP['FD'] & 0xfe00) >> 9) + 1980);

 $this->Entries[] = new simpleUnzipEntry($aI);
 } // end for each entries

 return $this->Entries;
 }

}

class simpleUnzipEntry
{

 var $Data = '';
 var $Error = 0;
 var $ErrorMsg = '';
 var $Name = '';
 var $Path = '';
 var $Time = 0;

 function __construct($in_Entry)
 {
 $this->Data = $in_Entry['D'];
 $this->Error = $in_Entry['E'];
 $this->ErrorMsg = $in_Entry['EM'];
 $this->Name = $in_Entry['N'];
 $this->Path = $in_Entry['P'];
 $this->Time = $in_Entry['T'];
 }

}