<html>
<head>
<title>Location needed</title>
</head>
<body onload="get_location()">
This link is geo-restricted. Your location is needed to verify that you are authorized to access this link.
<script>
var params = new URLSearchParams(window.location.search);
var glink = params.get("glink");
var lat;
var long;
var method = "GET";
var request;
function requestHandler() {
if (request.readyState === XMLHttpRequest.DONE) {
if (request.status === 200) {
if (request.responseText == "B") {
alert("You are not authorized to access this GLink, as you are outside the permitted radius. If you think this is an error, please try again on a mobile device.");
} else {
window.location.replace(request.responseText);
}
} else {
console.log("Error sending data to server.");
}
}
}
function storeLocation(position) {
lat = position.coords.latitude;
long = position.coords.longitude;
}
function callbackFunction(position) {
storeLocation(position);
request = new XMLHttpRequest();
request.onreadystatechange = requestHandler;
if (method == "GET") {
request.open("GET","/checkloc.php?latitude=" + encodeURIComponent(lat) + "&longitude=" + encodeURIComponent(long) + "&glink=" + encodeURIComponent(glink));
request.send();
} else if (method == "POST") {
request.open("POST","/checkloc.php");
request.send("latitude=" + encodeURIComponent(lat) + "&longitude=" + encodeURIComponent(long));
}
}
function get_location() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(callbackFunction);
} else {
alert('You cannot access this GLink as your browser does not support geolocation.');
}
}
</script>
</body>
</html>