From d743a27de8fd9c2a7a1f6773083a2ba7b422ca4d Mon Sep 17 00:00:00 2001
From: Justin Clark <u2mejc@users.noreply.github.com>
Date: Thu, 7 Jul 2016 18:11:27 -0700
Subject: [PATCH] Fix is_valid_hostname regex

---
 plugins/common/functions | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/common/functions b/plugins/common/functions
index 09543e77e..459f7c236 100755
--- a/plugins/common/functions
+++ b/plugins/common/functions
@@ -1067,7 +1067,7 @@ strip_inline_comments() {
 
 is_valid_hostname() {
   declare desc="return 0 if argument is a valid hostname; else return 1"
-  local hostname_string="$1"; local hostname_regex='^(([a-zA-Z0-9\*](-?[a-zA-Z0-9])*)\.)*[a-zA-Z\*](-?[a-zA-Z0-9])+\.[a-zA-Z]{2,}$'
+  local hostname_string="${1,,}"; local hostname_regex='^(([a-z0-9\*](-?[a-z0-9])*)\.)*[a-z0-9\*](-?[a-z0-9])+\.[a-z]{2,}$'
   if [[ $hostname_string =~ $hostname_regex ]]; then
     return 0
   else