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Merge pull request #1361 from pi-hole/new/error404page

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Improve Error 404 page behavior
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DL6ER 2017-04-03 17:25:46 +02:00 committed by GitHub
commit 940d780a4c
1 changed files with 27 additions and 0 deletions
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27
advanced/index.php
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@ -1,15 +1,42 @@
<?php
/* Detailed Pi-Hole Block Page: Show "Website Blocked" if user browses to site, but not to image/file requests based on the work of WaLLy3K for DietPi & Pi-Hole */
function validIP($address){
if (preg_match('/[.:0]/', $address) && !preg_match('/[1-9a-f]/', $address)) {
// Test if address contains either `:` or `0` but not 1-9 or a-f
return false;
}
return !filter_var($address, FILTER_VALIDATE_IP) === false;
}
$uri = escapeshellcmd($_SERVER['REQUEST_URI']);
$serverName = escapeshellcmd($_SERVER['SERVER_NAME']);
// Retrieve server URI extension (EG: jpg, exe, php)
ini_set('pcre.recursion_limit',100);
$uriExt = pathinfo($uri, PATHINFO_EXTENSION);
// Define which URL extensions get rendered as "Website Blocked"
$webExt = array('asp', 'htm', 'html', 'php', 'rss', 'xml');
$AUTHORIZED_HOSTNAMES = array(
$ipv4,
$ipv6,
str_replace(array("[","]"), array("",""), $_SERVER["SERVER_NAME"]),
"pi.hole",
"localhost");
// Allow user set virtual hostnames
$virtual_host = getenv('VIRTUAL_HOST');
if (! empty($virtual_host))
array_push($AUTHORIZED_HOSTNAMES, $virtual_host);
// Immediately quit since we didn't block this page (the IP address or pi.hole is explicitly requested)
if(validIP($serverName) || in_array($serverName,$AUTHORIZED_HOSTNAMES))
{
http_response_code(404);
die();
}
if(in_array($uriExt, $webExt) || empty($uriExt))
{
// Requested resource has an extension listed in $webExt