From dfbd82500cd9994fba893a59e1121206c928fc63 Mon Sep 17 00:00:00 2001
From: Tweak <tweak@talosbot.xyz>
Date: Tue, 6 Sep 2022 20:31:37 -0600
Subject: [PATCH] Update utils.js to add support for multi level domains.

---
 utils/utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/utils.js b/utils/utils.js
index 30a770b..c4b192e 100644
--- a/utils/utils.js
+++ b/utils/utils.js
@@ -7,7 +7,7 @@ module.exports.checkIfValidIP = function(str) {
 
 module.exports.checkIfValidFQDN = function(str) {
   // Regular expression to check if string is a FQDN
-  const regexExp = /^(?!:\/\/)([a-zA-Z0-9-_]+\.)?[a-zA-Z0-9][a-zA-Z0-9-]+\.[a-zA-Z]{2,63}?$/gi
+  const regexExp = /(?=^.{4,253}$)(^((?!-)[a-zA-Z0-9-]{0,62}[a-zA-Z0-9]\.)+[a-zA-Z]{2,63}$)/gi
 
   return regexExp.test(str);
 };