From 180e80201a66199a2a4854be253ea402c6fb9e38 Mon Sep 17 00:00:00 2001
From: DrMaxNix <contact@drmaxnix.de>
Date: Wed, 22 Dec 2021 19:43:13 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20fix=20php-warnings=20on=20empty?=
 =?UTF-8?q?=20search?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- add fallback for $__domain in line 12
- check for fallback in if in line 16
---
 lookup/index.php | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/lookup/index.php b/lookup/index.php
index 73d076c..c9fe385 100644
--- a/lookup/index.php
+++ b/lookup/index.php
@@ -8,12 +8,12 @@
 	require(CMS_path("//config/nameserver.php")); //load config file at 'dnswatch/config/nameserver.php'
 	
 	
-	// GET DOMAIN TO SEARCH FOR //
-	$__domain = base64_decode($_POST["domain"]);
+	// GET DOMAIN TO SEARCH FOR (IF IT IS SET) //
+	$__domain = (isset($_POST["domain"]) ? base64_decode($_POST["domain"]) : NULL);
 	
 	
-	// CHECK SYNTAX //
-	if(preg_match("/^([a-z0-9\-]{1,64}\.){1,16}[a-z0-9]{2,}$/", $__domain)){
+	// CHECK IF SET AND FOR SYNTAX //
+	if($__domain !== NULL and preg_match("/^([a-z0-9\-]{1,64}\.){1,16}[a-z0-9]{2,}$/", $__domain)){
 		//filter again for security
 		$__domain = STR_filter($__domain, "abcdefghijklmnopqrstuvwxyz0123456789-."); //remove all chars in $__domain which are not contained in this list
 		
@@ -60,4 +60,4 @@
 	
 	// RESPOND WITH JSON //
 	echo(json_encode($Response));
-?>
\ No newline at end of file
+?>
-- 
2.30.2