Sindbad~EG File Manager

Current Path : /home/beeson/public_html/helpwithmath_old/
Upload File :
Current File : //home/beeson/public_html/helpwithmath_old/download4.php

<?php 
// This page enables the user to download one of 8 versions of MathXpert.
// For it to work, session variables 'OK', 'WhichDisk',  'ProductType', and 'TimeLimit' must be correctly set.
// In particular for a paid version, these are set only when we're sure that they have paid.
session_start();
$WhichDisk = $_SESSION['WhichDisk'];
$ProductType = $_SESSION['ProductType'];
$OK = $_SESSION['OK'];
if($OK != "ok" ||
   ($ProductType != "paid" && $ProductType != "lab" && $ProductType != "WebGradesLabEdition" && $ProductType != "WebGradesCalculus4" &&  $ProductType != "trial" && $ProductType != "Prepaid") ||
   ($WhichDisk != "0" && $WhichDisk != "1" && $WhichDisk != "3" && $WhichDisk != "7")
  )
    { header("Location: ./index.php");  
      // redirect to main web page
    } 
$oops = "oops";  // so it won't be "" unless something goes wrong

$Dir=    "Calculus4/";

/*________________________________________________________*/
function send_download($directory, $filename)
{
$file_path = '../PrivateFiles/'.$directory.$filename;
$file_size=@filesize($file_path);
header("Content-Type: application/x-msdownload");  // that's the mime type for a .exe file
header("Content-disposition: attachment; filename=$filename");
header("Content-Length: $file_size");
header('Content-Transfer-Encoding: binary');
readfile($file_path);
exit;
}
/*____________________________________________________________________*/

if(!isset($_SESSION["countDownloads"]))
    $_SESSION["countDownloads"] = 1;
else
   ++$_SESSION["countDownloads"];
if($_SESSION["countDownloads"] <= 15 
    //&&  ( $_SESSION['OS'] == "Win32" || $_SESSION['OS'] == "Win64" || $_SESSION['OS'] == "Mac")
  ) 
     send_download($Dir, "setup.exe");  // must be done before headers are issued
else 
   $oops = $Dir;
   
/*________________________________________________________*/
?>   
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<body>
   For security reasons, no more than three downloads are allowed per day per person.  You have had three attempts today already. 
   <?php 
    
     // echo  '\N../PrivateFiles/' .$Dir . "setup.exe";
	 // echo $_SESSION['WhichDisk']; echo "\n"; echo $_SESSION['TimeLimit'];s
  
   if($oops != "")
      { echo "Download directory incorrectly set\n";
      }
   ?>   
</body>
</html>

Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists