From e9478ede0fae49df51be819cbe761ba96e0fc622 Mon Sep 17 00:00:00 2001
From: Henning Brauer <henning@cvs.openbsd.org>
Date: Wed, 28 Jul 2004 16:56:22 +0000
Subject: prevent unresolvable hostnames in "listen on" statements

---
 usr.sbin/ntpd/parse.y | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'usr.sbin/ntpd')

diff --git a/usr.sbin/ntpd/parse.y b/usr.sbin/ntpd/parse.y
index 0baa4383b57..400b8d1fc67 100644
--- a/usr.sbin/ntpd/parse.y
+++ b/usr.sbin/ntpd/parse.y
@@ -1,4 +1,4 @@
-/*	$OpenBSD: parse.y,v 1.15 2004/07/28 16:38:43 henning Exp $ */
+/*	$OpenBSD: parse.y,v 1.16 2004/07/28 16:56:21 henning Exp $ */
 
 /*
  * Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -127,6 +127,13 @@ conf_main	: LISTEN ON address	{
 			struct listen_addr	*la;
 			struct ntp_addr		*h, *next;
 
+			if ($3->a == NULL) {
+				yyerror("cannot resolve \"%s\"", $3->name);
+				free($3->name);
+				free($3);
+				YYERROR;
+			}
+
 			for (h = $3->a; h != NULL; h = next) {
 				next = h->next;
 				if (h->ss.ss_family == AF_UNSPEC) {
-- 
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