[src/trunk]: src/sbin/route Make prefixlen check to make sure its argument is...

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/77ab9d43d222
branches:  trunk
changeset: 538333:77ab9d43d222
user:      itojun <itojun%NetBSD.org@localhost>
date:      Fri Oct 18 00:16:25 2002 +0000

description:
Make prefixlen check to make sure its argument is present before deref
from openbsd

diffstat:

 sbin/route/route.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r 0d5b67a675e5 -r 77ab9d43d222 sbin/route/route.c
--- a/sbin/route/route.c        Thu Oct 17 23:50:17 2002 +0000
+++ b/sbin/route/route.c        Fri Oct 18 00:16:25 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: route.c,v 1.59 2002/07/20 08:36:27 grant Exp $ */
+/*     $NetBSD: route.c,v 1.60 2002/10/18 00:16:25 itojun Exp $        */
 
 /*
  * Copyright (c) 1983, 1989, 1991, 1993
@@ -43,7 +43,7 @@
 #if 0
 static char sccsid[] = "@(#)route.c    8.6 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: route.c,v 1.59 2002/07/20 08:36:27 grant Exp $");
+__RCSID("$NetBSD: route.c,v 1.60 2002/10/18 00:16:25 itojun Exp $");
 #endif
 #endif /* not lint */
 
@@ -934,7 +934,8 @@
                                forcenet++;
                                break;
                        case K_PREFIXLEN:
-                               argc--;
+                               if (!--argc)
+                                       usage(1+*argv);
                                if (prefixlen(*++argv) == 128) {
                                        forcenet = 0;
                                        ishost = 1;