AlexanderOMara/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline' stackoverflow.com;">
<title>Are you logged in to Stack Overflow?</title>
</head>
<body>
	<h1>Are you logged in to Stack Overflow?<h1>
	<h2 id="answer">...<h2>
<script>
(function() {
'use strict';
// We allow without the www, not with, so that redirect will fail.
var redir = 'http://www.stackoverflow.com';
var notTimeout;
var finished = false;
var answer = document.getElementById('answer');
window.addEventListener('securitypolicyviolation', function(e) {
	// If the CSP error is the one expected, then an active session.
	if (e.blockedURI.indexOf(redir) === 0) {
		if (notTimeout) {
			clearTimeout(notTimeout);
		}
		answer.textContent = 'Yes';
		finished = true;
	}
}, true);
function done() {
	// Wait until the CSP error that follows is fired.
	if (!finished) {
		notTimeout = setTimeout(function() {
			answer.textContent = 'No';
		}, 100);
	}
}
var img = document.createElement('img');
img.addEventListener('load', done);
img.addEventListener('error', done);
img.src =
	'https://stackoverflow.com/users/login?ssrc=head&returnurl=' +
	encodeURIComponent(redir) +
	'&_=' + Date.now();
})();
</script>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8" />
	<meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline' stackoverflow.com;">
	<title>Are you logged in to Stack Overflow?</title>
	</head>
	<body>
	<h1>Are you logged in to Stack Overflow?<h1>
	<h2 id="answer">...<h2>
	<script>
	(function() {
	'use strict';
	// We allow without the www, not with, so that redirect will fail.
	var redir = 'http://www.stackoverflow.com';
	var notTimeout;
	var finished = false;
	var answer = document.getElementById('answer');
	window.addEventListener('securitypolicyviolation', function(e) {
	// If the CSP error is the one expected, then an active session.
	if (e.blockedURI.indexOf(redir) === 0) {
	if (notTimeout) {
	clearTimeout(notTimeout);
	}
	answer.textContent = 'Yes';
	finished = true;
	}
	}, true);
	function done() {
	// Wait until the CSP error that follows is fired.
	if (!finished) {
	notTimeout = setTimeout(function() {
	answer.textContent = 'No';
	}, 100);
	}
	}
	var img = document.createElement('img');
	img.addEventListener('load', done);
	img.addEventListener('error', done);
	img.src =
	'https://stackoverflow.com/users/login?ssrc=head&returnurl=' +
	encodeURIComponent(redir) +
	'&_=' + Date.now();
	})();
	</script>
	</body>
	</html>