From db2e8509fd98c86caac96035652519f2d162f283 Mon Sep 17 00:00:00 2001
From: Daniel Hartmeier <dhartmei@cvs.openbsd.org>
Date: Thu, 27 Jan 2005 15:30:36 +0000
Subject: dynamic interface names must start with a letter. catches the
 nonsensical "(10.1.2.3)" that results from a simple typo like "$(ext_ip)"
 instead of "$(ext_if)".

---
 sbin/pfctl/parse.y | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'sbin/pfctl')

diff --git a/sbin/pfctl/parse.y b/sbin/pfctl/parse.y
index 29ee7d01825..f5fd8ac97bc 100644
--- a/sbin/pfctl/parse.y
+++ b/sbin/pfctl/parse.y
@@ -1,4 +1,4 @@
-/*	$OpenBSD: parse.y,v 1.474 2005/01/05 18:23:10 mcbride Exp $	*/
+/*	$OpenBSD: parse.y,v 1.475 2005/01/27 15:30:35 dhartmei Exp $	*/
 
 /*
  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
@@ -2307,6 +2307,11 @@ dynaddr		: '(' STRING ')'		{
 			char	*p, *op;
 
 			op = $2;
+			if (!isalpha(op[0])) {
+				yyerror("invalid interface name '%s'", op);
+				free(op);
+				YYERROR;
+			}
 			while ((p = strrchr($2, ':')) != NULL) {
 				if (!strcmp(p+1, "network"))
 					flags |= PFI_AFLAG_NETWORK;
-- 
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