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kapravel/cloudfare Anti-DDOS JS challenge

Created February 26, 2014 20:53
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cloudfare Anti-DDOS JS challenge
<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
<meta name="robots" content="noindex, nofollow" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
<title>Just a moment...</title>
<style type="text/css">
html, body {width: 100%; height: 100%; margin: 0; padding: 0;}
body {background-color: #ffffff; font-family: Helvetica, Arial, sans-serif; font-size: 100%;}
h1 {font-size: 1.5em; color: #404040; text-align: center;}
p {font-size: 1em; color: #404040; text-align: center; margin: 10px 0 0 0;}
#spinner {margin: 0 auto 30px auto; display: block;}
.attribution {margin-top: 20px;}
</style>
<script type="text/javascript">
//<![CDATA[
(function(){
var onReady = function( callback ){
var addListener = document.addEventListener || document.attachEvent,
eventName = document.addEventListener ? 'DOMContentLoaded' : 'onreadystatechange';
addListener.call(document, eventName, function(){ callback(); }, false );
}
onReady(function(){
var content = document.getElementById('cf-content');
content.style.display = 'block';
setTimeout(function(){
var t,r,a,f;
t = document.createElement('div');
t.innerHTML="<a href='/'>x</a>";
t = t.firstChild.href;
r = t.match(/https?:\/\//)[0];
t = t.substr(r.length);
t = t.substr(0,t.length-1);
a = document.getElementById('jschl-answer');
f = document.getElementById('challenge-form');
a.value = 12+14*2;
a.value = parseInt(a.value, 10) + t.length;
f.submit();
}, 5850);
});
})();
//]]>
</script>
</head>
<body>
<table width="100%" height="100%" cellpadding="20">
<tr>
<td align="center" valign="middle">
<div class="cf-browser-verification cf-im-under-attack">
<noscript><h1 data-translate="turn_on_js" style="color:#bd2426;">Please turn JavaScript on and reload the page.</h1></noscript>
<div id="cf-content" style="display:none">
<img id="spinner" src="/cdn-cgi/images/spinner-2013.gif" />
<h1><span data-translate="checking_browser">Checking your browser before accessing</span> superuser.com.</h1>
<p data-translate="process_is_automatic">This process is automatic. Your browser will redirect to your requested content shortly.</p>
<p data-translate="allow_5_secs">Please allow up to 5 seconds&hellip;</p>
</div>
<form id="challenge-form" action="/cdn-cgi/l/chk_jschl" method="get">
<input type="hidden" name="jschl_vc" value="58f84bec32a99d41c1d14dbcd6c3faaf"/>
<input type="hidden" id="jschl-answer" name="jschl_answer"/>
</form>
</div>
<div class="attribution"><a href="http://www.cloudflare.com/" target="_blank" style="font-size: 12px;">DDoS protection by CloudFlare</a></div>
</td>
</tr>
</table>
</body>
</html>
@SlothReal
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