From 082e9458e52e80715f23ba84c76564c8e23ff48e Mon Sep 17 00:00:00 2001
From: Kazuhiro NISHIYAMA <zn@mbf.nifty.com>
Date: Thu, 23 May 2019 23:23:10 +0900
Subject: [PATCH] Simplify hostname_regex

`[a-z0-9\.\*-]+` includes `\.` and `[a-z0-9\*-]+`.
So I think `^([a-z0-9\.\*-]+\.)*[a-z0-9\*-]+$` means last char is `[a-z0-9\*-]`
and other optional chars are `[a-z0-9\.\*-]*`.
---
 plugins/domains/functions | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/domains/functions b/plugins/domains/functions
index c724aad33..733db5c9b 100755
--- a/plugins/domains/functions
+++ b/plugins/domains/functions
@@ -312,7 +312,7 @@ is_global_vhost_enabled() {
 is_valid_hostname() {
   declare desc="return 0 if argument is a valid hostname; else return 1"
   local hostname_string="${1,,}"
-  local hostname_regex='^([a-z0-9\.\*-]+\.)*[a-z0-9\*-]+$'
+  local hostname_regex='^[a-z0-9\.\*-]*[a-z0-9\*-]$'
   if [[ $hostname_string =~ $hostname_regex ]]; then
     return 0
   else