From e137c529f7e66fd88ebec221c18d8ab75ffcb484 Mon Sep 17 00:00:00 2001
From: Cedric Berger <cedric@cvs.openbsd.org>
Date: Tue, 17 Feb 2004 08:26:48 +0000
Subject: Tighten pfi_skip_if() up, and a bit of KNF. ok mcbride@

---
 sys/net/pf_if.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

(limited to 'sys/net/pf_if.c')

diff --git a/sys/net/pf_if.c b/sys/net/pf_if.c
index 85e68bae079..470d08e4a39 100644
--- a/sys/net/pf_if.c
+++ b/sys/net/pf_if.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pf_if.c,v 1.7 2004/02/10 18:49:10 henning Exp $ */
+/*	$OpenBSD: pf_if.c,v 1.8 2004/02/17 08:26:47 cedric Exp $ */
 
 /*
  * Copyright (c) 2001 Daniel Hartmeier
@@ -767,13 +767,24 @@ pfi_lookup_if(const char *name)
 int
 pfi_skip_if(const char *filter, struct pfi_kif *p, int f)
 {
+	int	n;
+
 	if ((p->pfik_flags & PFI_IFLAG_GROUP) && !(f & PFI_FLAG_GROUP))
 		return (1);
 	if ((p->pfik_flags & PFI_IFLAG_INSTANCE) && !(f & PFI_FLAG_INSTANCE))
 		return (1);
 	if (filter == NULL || !*filter)
 		return (0);
-	return strncmp(p->pfik_name, filter, strlen(filter));
+	if (!strcmp(p->pfik_name, filter))
+		return (0);	/* exact match */
+	n = strlen(filter);
+	if (n < 1 || n >= IFNAMSIZ)
+		return (1);	/* sanity check */
+	if (filter[n-1] >= '0' && filter[n-1] <= '9')
+		return (1);	/* only do exact match in that case */
+	if (strncmp(p->pfik_name, filter, n))
+		return (1);	/* prefix doesn't match */
+	return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
 }
 
 /* from pf_print_state.c */
@@ -820,7 +831,7 @@ pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
 		}
 	} else {
 		switch (dyn->pfid_acnt6) {
-		case (0):
+		case 0:
 			return (0);
 		case 1:
 			if (PF_AZERO(&dyn->pfid_mask6, AF_INET6));
-- 
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