Files
web/scripts/pi-hole/php/customcname.php
Matthias rank 4e07ae24f1 Added support for CNAME records add/remove
Signed-off-by: Matthias rank <development@m-rank.de>
2020-05-12 22:24:45 +02:00

142 lines
4.1 KiB
PHP

<?php
require_once "func.php";
$customCNAMEFile = "/etc/dnsmasq.d/05-pihole-custom-cname.conf";
switch ($_REQUEST['action'])
{
case 'get': echo json_encode(echoCustomCNAMEEntries()); break;
case 'add': echo json_encode(addCustomCNAMEEntry()); break;
case 'delete': echo json_encode(deleteCustomCNAMEEntry()); break;
default:
die("Wrong action");
}
function echoCustomCNAMEEntries()
{
$entries = getCustomCNAMEEntries();
$data = [];
foreach ($entries as $entry)
$data[] = [ $entry->domain, $entry->target ];
return [ "data" => $data ];
}
function getCustomCNAMEEntries()
{
global $customCNAMEFile;
$entries = [];
$handle = fopen($customCNAMEFile, "r");
if ($handle)
{
while (($line = fgets($handle)) !== false) {
$line = str_replace("cname=","", $line);
$line = str_replace("\r","", $line);
$line = str_replace("\n","", $line);
$explodedLine = explode (",", $line);
if (count($explodedLine) <= 1)
continue;
$data = new \stdClass();
$data->domains = array_slice($explodedLine, 0, -1);
$data->domain = implode(",", $data->domains);
$data->target = $explodedLine[count($explodedLine)-1];
$entries[] = $data;
}
fclose($handle);
}
return $entries;
}
function addCustomCNAMEEntry()
{
try
{
$target = !empty($_REQUEST['target']) ? $_REQUEST['target']: "";
$domain = !empty($_REQUEST['domain']) ? $_REQUEST['domain']: "";
if (empty($target))
return errorJsonResponse("Target must be set");
if (empty($domain))
return errorJsonResponse("Domain must be set");
// Check if each submitted domain is valid
$domains = array_map('trim', explode(",", $domain));
foreach ($domains as $d) {
if (!is_valid_domain_name($d))
return errorJsonResponse("Domain '$d' is not valid");
}
$existingEntries = getCustomCNAMEEntries();
// Check if a record for one of the domains already exists
foreach ($existingEntries as $entry)
foreach ($domains as $d)
if (in_array($d, $entry->domains))
return errorJsonResponse("There is already a CNAME record for '$d'");
exec("sudo pihole -a addcustomcname ".$domain." ".$target);
return successJsonResponse();
}
catch (\Exception $ex)
{
return errorJsonResponse($ex->getMessage());
}
}
function deleteCustomCNAMEEntry()
{
try
{
$target = !empty($_REQUEST['target']) ? $_REQUEST['target']: "";
$domain = !empty($_REQUEST['domain']) ? $_REQUEST['domain']: "";
if (empty($target))
return errorJsonResponse("Target must be set");
if (empty($domain))
return errorJsonResponse("Domain must be set");
$existingEntries = getCustomCNAMEEntries();
$found = false;
foreach ($existingEntries as $entry)
if ($entry->domain == $domain)
if ($entry->target == $target) {
$found = true;
break;
}
if (!$found)
return errorJsonResponse("This domain/ip association does not exist");
exec("sudo pihole -a removecustomcname ".$domain." ".$target);
return successJsonResponse();
}
catch (\Exception $ex)
{
return errorJsonResponse($ex->getMessage());
}
}
function successJsonResponse($message = "")
{
return [ "success" => true, "message" => $message ];
}
function errorJsonResponse($message = "")
{
return [ "success" => false, "message" => $message ];
}
?>