<?php
$filenames = array('prinsys20140827_linux.tar.gz','prinsys20140827_windows.zip');

$id = $_GET["id"];
if($id >= count($filenames) || $id < 0)
{
	echo("File does not exist!");
	return;
}

$filename = $filenames[$id];

header('Content-Type: application/x-gzip');
header('Content-Disposition: inline; filename="'.$filename.'"');
header('Cache-Control: public');
header('Content-Transfer-Encoding: binary');
header('Content-length: '.filesize($filename));

log_download($filename);
readfile($filename);

function log_download($filename)
{
	$ip = $_SERVER['REMOTE_ADDR'];
	$date = date("d.m.Y H:i:s");
	
	$fp = fopen("download_log.txt", "a");
	fputs($fp, "IP: $ip on $date : ".$filename."\n");
	fclose($fp);
}
?>