From 64ae35b1e08b3a348b5fc41ec758cd6bfac60122 Mon Sep 17 00:00:00 2001
From: Gilles Chehade <gilles@cvs.openbsd.org>
Date: Sun, 16 Aug 2015 20:53:20 +0000
Subject: when we switch valid_domainpart() from our own logic to using
 res_hnok() we missed the fact that res_hnok() will consider an empty string
 as valid.

---
 usr.sbin/smtpd/util.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'usr.sbin/smtpd')

diff --git a/usr.sbin/smtpd/util.c b/usr.sbin/smtpd/util.c
index 56451c5cf74..330878abf80 100644
--- a/usr.sbin/smtpd/util.c
+++ b/usr.sbin/smtpd/util.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: util.c,v 1.113 2015/05/06 08:37:47 gilles Exp $	*/
+/*	$OpenBSD: util.c,v 1.114 2015/08/16 20:53:19 gilles Exp $	*/
 
 /*
  * Copyright (c) 2000,2001 Markus Friedl.  All rights reserved.
@@ -494,6 +494,9 @@ valid_domainpart(const char *s)
 		return 0;
 	}
 
+	if (*s == '\0')
+		return 0;
+
 	return res_hnok(s);
 }
 
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