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index.php
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index.php
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<?php
// Include 'settings' form defines.php - copy one form provided .sample-file
include_once 'defines.php';
// Grab the host and full path of the requested URI
$requestedHost = $_SERVER["HTTP_HOST"];
$requestedUri = $requestedHost.$_SERVER["REQUEST_URI"];
// Make a nice friendly URL with no www prefix (only for display purposes)
$shortHost = str_replace("www.", "", $requestedHost);
// Also grab the user agent for logging and checking if it's a captive portal request
$userAgent = $_SERVER["HTTP_USER_AGENT"];
// Don't log favicon requests which the browser will issue when loading the log file
if($_SERVER["REQUEST_URI"] != "/favicon.ico")
{
logRequest($requestedUri, $userAgent);
}
// For these URIs and hosts "Success" page will be returned - not the educating one
$blackListedUris = array(
"www.apple.com/library/test/success.html",
);
$blackListedHosts = array(
"www.appleiphonecell.com",
"captive.apple.com",
"www.ibook.info",
"www.itools.info",
);
// This is iOS' Wi-Fi connectivity test request: https://erratasec.blogspot.com.au/2010/09/apples-secret-wispr-request.html
// iOS 7 added some new domains to the wispr request: https://supportforums.cisco.com/docs/DOC-36523
// Seems the iOS 7 may have a heap of domains so also check for the "CaptiveNetworkSupport" header https://forum.daviddarts.com/read.php?9,8879
if( in_array($requestedUri, $blackListedUris)
or in_array($requestedHost, $blackListedHosts)
or strpos($userAgent, "CaptiveNetworkSupport") !== false)
{
print_r("<HTML><HEAD><TITLE>Success</TITLE></HEAD><BODY>Success</BODY></HTML>");
exit();
}
// This is Windows' Wi-Fi connectivity test request: https://technet.microsoft.com/en-us/library/cc766017(v=WS.10).aspx
if($requestedUri == "www.msftncsi.com/ncsi.txt")
{
print_r("Microsoft NCSI");
exit();
}
?>
<!DOCTYPE html>
<html xmlns="https://www.w3.org/1999/xhtml">
<head>
<title>This is not <?php print_r($shortHost); ?>!</title>
<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0" name="viewport" />
<style type="text/css">
body
{
font-family: league-gothic,sans-serif;
background-color: #333333;
color: #fdfdfd;
margin: 0;
padding: 0;
}
p
{
font-size: 0.9em;
line-height: 1.285em;
}
header, content
{
padding: 0 20%;
display: block;
}
header
{
padding-bottom: 20px;
}
content
{
background-color: #222222;
padding-top: 40px;
}
h1, h2
{
display: block;
font-weight: bold;
letter-spacing: 0.04em;
padding: 10px 0;
text-align: center;
text-transform: uppercase;
width: 100%;
padding: 0;
}
h1
{
font-size: 6.8em;
margin: 5px 0 0 0;
}
h2
{
font-size: 1.6em;
margin: 0 0 22px 0;
}
h3
{
font-size: 1em;
background-color: #b21563;
display: inline;
padding: 7px;
margin-bottom: 10px;
line-height: 2.2em;
}
hr
{
border: 0;
height: 6px;
background-color: #fdfdfd;
width: 30%;
}
p
{
padding: 0 0 23px 0;
margin: 10px 0 0 0;
}
p, li
{
word-wrap: break-word;
}
em
{
font-style: normal;
color: #a7d019;
font-size: 1.1em;
}
ol
{
color: #222222;
font-weight: bold;
}
ol span
{
color: #666666;
}
div
{
background-color: #a7d019;
padding: 10px;
margin-bottom: 40px;
}
@media only screen and (max-width: 630px)
{
header, content
{
padding-left: 4%;
padding-right: 4%;
}
h1
{
font-size: 5em;
}
h2
{
font-size: 1.4em;
}
}
</style>
</head>
<body>
<header>
<h1>
UH OH
</h1>
<h2>
THIS ISN'T WHAT YOU<br />
WERE EXPECTING!
</h2>
<hr />
</header>
<content>
<h3>
Where's <?php print_r($shortHost); ?>?
</h3>
<p>
Double check the URL in your address bar, I'll wait...
</p>
<h3>
This is a rogue wireless access point
</h3>
<p>
You might have done it consciously thinking you were picking up some free Wi-Fi or your device might have done it
accidentally. Most devices remember networks they've previously connected to and continue to look for them well
after they're gone. But how did that get
you here?
</p>
<h3>
WILSON!!!
</h3>
<p>
Let's imagine you once connected to an unprotected access point called "WILSON". <em>Your phone or tablet
or laptop is now wandering around screaming "WILSON", "WILSON", where are you
"WILSON"?!</em> The access point you're now connected to heard that and responded with "I'm WILSON" and
now here you are.
</p>
<h3>
Cookies
</h3>
<p>
Now that you're connected, <em>the device could monitor all your unencrypted traffic</em>; read any passwords you
send, store the responses from websites you visit and grab any cookies along the way.
<?php
if(empty($_COOKIE))
{
echo 'As it turns out, your browser didn\'t send any cookies with this request but it could all so easily have
been a different situation. ';
}
else
{
echo 'In fact here are your cookie names and values for ', $shortHost;
// ToDo: Ignore the GA cookies, there's not much of interest there
echo ":</p><div><ol>";
foreach ($_COOKIE as $name => $value)
{
echo sprintf(
'<li>%s: <span>%s</span></li>',
htmlspecialchars($name),
htmlspecialchars($value)
);
}
echo "</ol></div><p>";
}
?>
Often these cookies will contain enough information for an attacker to hijack your session and impersonate you;
it's the equivalent of just handing over your phone or PC whilst you're already logged in.
</p>
<h3>
Insecure websites put you at risk
</h3>
<p>
It's <em>websites that do not implement proper transport
layer protection that put you at risk.</em> You requested this site over HTTP and it sent the cookies you see
above in an insecure fashion which, depending on their purpose, can be rather bad. That is the website's fault.
</p>
<h3>
Don't trust Wi-Fi hotspots
</h3>
<p>
You could just as easily have been served the actual
page you requested and if not loaded securely it could have been monitored or manipulated by the access point you
are presently connected to. <em>An attacker could be harvesting your info and you would be none the wiser.</em>
</p>
<h3>
But don't worry...
</h3>
<p>
Fortunately this is a friendly rogue access point. No personal data has been collected and you've learnt
something new about Wi-Fi and website security. Have a nice day!
</p>
<content>
</body>
</html>
<?php
function logRequest($requestedUri, $userAgent)
{
$handle = fopen(LOG_LOCATION, 'a');
// Skip logging if unable to write to log
if (!$handle)
return;
$logRow = array(
date('Y-m-d H:i:s'),
$requestedUri,
$_SERVER["REMOTE_HOST"],
$_SERVER["HTTP_ACCEPT"],
$userAgent
);
fwrite($handle, implode('|', $logRow) . "\n");
fclose($handle);
}
?>