<?php

class download
{
	
	function Decode_String($string)
	{
		$base64 = $string;	
		$base64_de = base64_decode($base64);
		$array_info = unserialize($base64_de);
	
		if($array_info['server'] == $_SERVER['SERVER_ADDR']){
			$this->down_file($array_info['fileUp']);
		}else{
			$url = "http://".$array_info['server'].$array_info['path'].$array_info['filePhp'].$base64;
			header("Location:" . $url);
		}
	}

	function down_file($file)
	{   
		 
		ini_set("session.save_path","/php_sessions");
		$size = filesize(ini_get("session.save_path").'/'. $file);
		$NameFile = explode("_IM_SendFile_",$file);
	
		 if (!empty($file))
	     {
		        if (ereg('Opera(/| )([0-9].[0-9]{1,2})', $_SERVER['HTTP_USER_AGENT']))
		           $UserBrowser = "Opera";
		        elseif (ereg('MSIE ([0-9].[0-9]{1,2})', $_SERVER['HTTP_USER_AGENT']))
		            $UserBrowser = "IE";
	            else
		            $UserBrowser = '';

				$strFileType = strrev(substr(strrev($NameFile),0,4));
				$ContentType = "application/octet-stream";

			   	if ($strFileType == ".asf") 
			   		$ContentType = "video/x-ms-asf";
			   	if ($strFileType == ".avi")
			   		$ContentType = "video/avi";
			   	if ($strFileType == ".doc")
			   		$ContentType = "application/msword";
			   	if ($strFileType == ".zip")
			   		$ContentType = "application/zip";
			   	if ($strFileType == ".xls")
			   		$ContentType = "application/vnd.ms-excel";
			   	if ($strFileType == ".gif")
			   		$ContentType = "image/gif";
			   	if ($strFileType == ".jpg" || $strFileType == "jpeg")
			   		$ContentType = "image/jpeg";
			   	if ($strFileType == ".wav")
			   		$ContentType = "audio/wav";
			   	if ($strFileType == ".mp3")
			   		$ContentType = "audio/mpeg3";
			   	if ($strFileType == ".mpg" || $strFileType == "mpeg")
			   		$ContentType = "video/mpeg";
			   	if ($strFileType == ".rtf")
			   		$ContentType = "application/rtf";
			   	if ($strFileType == ".htm" || $strFileType == "html")
			   		$ContentType = "text/html";
			   	if ($strFileType == ".xml") 
			   		$ContentType = "text/xml";
			   	if ($strFileType == ".xsl") 
			   		$ContentType = "text/xsl";
			   	if ($strFileType == ".css") 
			   		$ContentType = "text/css";
			   	if ($strFileType == ".php") 
			   		$ContentType = "text/php";
			   	if ($strFileType == ".asp") 
			   		$ContentType = "text/asp";
			   	if ($strFileType == ".pdf")
			   		$ContentType = "application/pdf";
			   	if ($strFileType == ".txt")
			   		$ContentType = "text/plain";
			   	if ($strFileType == ".log")
			   		$ContentType = "text/plain";
			   	if ($strFileType == ".wmv")
			   		$ContentType = "video/x-ms-wmv";
				if ($strFileType == ".sxc")
					$ContentType = "application/vnd.sun.xml.calc";
				if ($strFileType == ".odt")
					$ContentType = "application/vnd.oasis.opendocument.text";
				if ($strFileType == ".stc")
					$ContentType = "application/vnd.sun.xml.calc.template";
				if ($strFileType == ".sxd")
					$ContentType = "application/vnd.sun.xml.draw";
				if ($strFileType == ".std")
					$ContentType = "application/vnd.sun.xml.draw.template";
				if ($strFileType == ".sxi")
					$ContentType = "application/vnd.sun.xml.impress";
				if ($strFileType == ".sti")
					$ContentType = "application/vnd.sun.xml.impress.template";
				if ($strFileType == ".sxm")
					$ContentType = "application/vnd.sun.xml.math";
				if ($strFileType == ".sxw")
					$ContentType = "application/vnd.sun.xml.writer";
				if ($strFileType == ".sxq")
					$ContentType = "application/vnd.sun.xml.writer.global";
				if ($strFileType == ".stw")
					$ContentType = "application/vnd.sun.xml.writer.template";
				if ($strFileType == ".ps")
					$ContentType = "application/postscript";
				if ($strFileType == ".pps")
					$ContentType = "application/vnd.ms-powerpoint";
				if ($strFileType == ".odt")
					$ContentType = "application/vnd.oasis.opendocument.text";
				if ($strFileType == ".ott")
					$ContentType = "application/vnd.oasis.opendocument.text-template";
				if ($strFileType == ".oth")
					$ContentType = "application/vnd.oasis.opendocument.text-web";
				if ($strFileType == ".odm")
					$ContentType = "application/vnd.oasis.opendocument.text-master";
				if ($strFileType == ".odg")
					$ContentType = "application/vnd.oasis.opendocument.graphics";
				if ($strFileType == ".otg")
					$ContentType = "application/vnd.oasis.opendocument.graphics-template";
				if ($strFileType == ".odp")
					$ContentType = "application/vnd.oasis.opendocument.presentation";
				if ($strFileType == ".otp")
					$ContentType = "application/vnd.oasis.opendocument.presentation-template";
				if ($strFileType == ".ods")
					$ContentType = "application/vnd.oasis.opendocument.spreadsheet";
				if ($strFileType == ".ots")
					$ContentType = "application/vnd.oasis.opendocument.spreadsheet-template";
				if ($strFileType == ".odc")
					$ContentType = "application/vnd.oasis.opendocument.chart";
				if ($strFileType == ".odf")
					$ContentType = "application/vnd.oasis.opendocument.formula";
				if ($strFileType == ".odi")
					$ContentType = "application/vnd.oasis.opendocument.image";
				if ($strFileType == ".ndl")
					$ContentType = "application/vnd.lotus-notes";
								
		        $mime_type = ($UserBrowser == 'IE' || $UserBrowser == 'Opera') ? 'application/octetstream' : 'application/octet-stream';
	
		        header("Content-Type: $ContentType");
		        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
		        header("Pragma: public");
		        header("Expires: 0");
		        header("Content-Disposition: attachment; filename=\"" . $NameFile[1] . "\"");
				header("Content-length: " . $size);
				readfile(ini_get("session.save_path") . "/" . $file); 
				die();
	    }
	}
}

if(isset ($_REQUEST['file'])){
	$obj_down = new download();
	$obj_down->Decode_String($_REQUEST['file']);
}

?>