<?php
require_once("inc_hylopi.php");

$base_lat="";
$base_long="";

$file = /var/www/myfile.zip; // should be 1 level up from your public_html directory since we want our files to only be accessed through our interface.

$dist_allowed = 500; // distance allowed in meters

// Modify the above 4 variables

$client_lat = $_GET['lat'];
$client_long = $_GET['long'];

// try to validate the client.

$dist_m = calculateDistanceBetweenTwoPoints($base_lat,$base_long,$client_lat,$client_long,'MT',true,5);

if ($dist_m > $dist_allowed)
	die("Sorry, you are not authorized to access this page.");

header('Content-Description: File Transfer');
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename=' . basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile( $file );
exit;

// Note that if you want your file to be viewed in a browser rather than downloaded simply modify line 8 use to use "Content-Disposition: inline; ..."

?>