From 0d8a305d61aacaa0ee94374d3a26b531be28a09c Mon Sep 17 00:00:00 2001
From: Guillaume Mazoyer <respawneral@gmail.com>
Date: Fri, 30 May 2014 00:45:37 +0200
Subject: Update regex for matching FQDN.

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

(limited to 'utils.php')

diff --git a/utils.php b/utils.php
index 6baafb8..e622642 100644
--- a/utils.php
+++ b/utils.php
@@ -28,7 +28,7 @@ function match_ipv6($ip) {
 }
 
 function match_fqdn($fqdn) {
-  $regex = '/^(?=.{1,255}$)[0-9A-Za-z](?:(?:[0-9A-Za-z]|-){0,61}[0-9A-Za-z])?(?:\.[0-9A-Za-z](?:(?:[0-9A-Za-z]|-){0,61}[0-9A-Za-z])?)*\.?$/';
+  $regex = '/(?=^.{4,255}$)(^((?!-)[a-zA-Z0-9-]{1,63}(?<!-)\.)+[a-zA-Z]{2,63}$)/';
 
   if ((preg_match($regex, $fqdn) === false) ||
       (preg_match($regex, $fqdn) === 0)) {
-- 
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