From d21d623f8e8a4315c961e4c21e8791364bf5da82 Mon Sep 17 00:00:00 2001
From: bms <bms@FreeBSD.org>
Date: Wed, 25 Feb 2004 23:45:57 +0000
Subject: Sync HEAD sources to vendor branch import of routed v2.27 from
 rhyolite.com. Update <protocols/routed.h> for the MD5 changes requested in
 bin/35843. Preserve local changes.

Education by:	obrien, markm, pointy-stick
PR:		bin/35843 (and doubtless others)
---
 sbin/routed/input.c | 51 ++++++++++++++++++++++++++++++++-------------------
 1 file changed, 32 insertions(+), 19 deletions(-)

(limited to 'sbin/routed/input.c')

diff --git a/sbin/routed/input.c b/sbin/routed/input.c
index 6d258f1..a768424 100644
--- a/sbin/routed/input.c
+++ b/sbin/routed/input.c
@@ -35,11 +35,13 @@
 
 #include "defs.h"
 
-#if !defined(sgi) && !defined(__NetBSD__)
-static char sccsid[] __attribute__((unused)) = "@(#)input.c	8.1 (Berkeley) 6/5/93";
-#elif defined(__NetBSD__)
-#include <sys/cdefs.h>
+#ifdef __NetBSD__
 __RCSID("$NetBSD$");
+#elif defined(__FreeBSD__)
+__RCSID("$FreeBSD$");
+#else
+__RCSID("$Revision: 2.26 $");
+#ident "$Revision: 2.26 $"
 #endif
 #ident "$FreeBSD$"
 
@@ -328,9 +330,14 @@ input(struct sockaddr_in *from,		/* received from this IP address */
 					v12buf.n->n_family = RIP_AF_INET;
 					v12buf.n->n_dst = RIP_DEFAULT;
 					i = aifp->int_d_metric;
-					if (0 != (rt = rtget(RIP_DEFAULT, 0)))
-					    i = MIN(i, (rt->rt_metric
-							+aifp->int_metric+1));
+					if (0 != (rt = rtget(RIP_DEFAULT, 0))) {
+					    j = (rt->rt_metric
+						 +aifp->int_metric
+						 +aifp->int_adj_outmetric
+						 +1);
+					    if (i > j)
+						i = j;
+					}
 					v12buf.n->n_metric = htonl(i);
 					v12buf.n++;
 					break;
@@ -396,11 +403,15 @@ input(struct sockaddr_in *from,		/* received from this IP address */
 				 */
 				v12buf.n->n_family = RIP_AF_INET;
 				v12buf.n->n_dst = dst;
-				v12buf.n->n_metric = (rt->rt_metric+1
-						      + ((aifp!=0)
-							  ? aifp->int_metric
-							  : 1));
-				if (v12buf.n->n_metric > HOPCNT_INFINITY)
+				j = rt->rt_metric+1;
+				if (!aifp)
+					++j;
+				else
+					j += (aifp->int_metric
+					      + aifp->int_adj_outmetric);
+				if (j < HOPCNT_INFINITY)
+					v12buf.n->n_metric = j;
+				else
 					v12buf.n->n_metric = HOPCNT_INFINITY;
 				if (v12buf.buf->rip_vers != RIPv1) {
 					v12buf.n->n_tag = rt->rt_tag;
@@ -484,8 +495,8 @@ input(struct sockaddr_in *from,		/* received from this IP address */
 		if (from->sin_port != ntohs(RIP_PORT)) {
 			msglim(&bad_router, FROM_NADDR,
 			       "    discard RIP response from unknown port"
-			       " %d on host %s", ntohs(from->sin_port),
-				naddr_ntoa(FROM_NADDR));
+			       " %d on %s",
+			       ntohs(from->sin_port), naddr_ntoa(FROM_NADDR));
 			return;
 		}
 
@@ -654,7 +665,8 @@ input(struct sockaddr_in *from,		/* received from this IP address */
 
 			/* Adjust metric according to incoming interface..
 			 */
-			n->n_metric += aifp->int_metric;
+			n->n_metric += (aifp->int_metric
+					+ aifp->int_adj_inmetric);
 			if (n->n_metric > HOPCNT_INFINITY)
 				n->n_metric = HOPCNT_INFINITY;
 
@@ -967,12 +979,12 @@ ck_passwd(struct interface *aifp,
 			 */
 			if (TRACEPACKETS) {
 				if (NA->au.a_md5.md5_auth_len
-				    != RIP_AUTH_MD5_LEN)
+				    != RIP_AUTH_MD5_HASH_LEN)
 					msglim(use_authp, from,
 					       "unknown MD5 RIPv2 auth len %#x"
 					       " instead of %#x from %s",
 					       NA->au.a_md5.md5_auth_len,
-					       RIP_AUTH_MD5_LEN,
+					       RIP_AUTH_MD5_HASH_LEN,
 					       naddr_ntoa(from));
 				if (na2->a_family != RIP_AF_AUTH)
 					msglim(use_authp, from,
@@ -989,8 +1001,9 @@ ck_passwd(struct interface *aifp,
 			}
 
 			MD5Init(&md5_ctx);
-			MD5Update(&md5_ctx, (u_char *)rip, len);
-			MD5Update(&md5_ctx, ap->key, RIP_AUTH_MD5_LEN);
+			MD5Update(&md5_ctx, (u_char *)rip,
+				  len + RIP_AUTH_MD5_HASH_XTRA);
+			MD5Update(&md5_ctx, ap->key, RIP_AUTH_MD5_KEY_LEN);
 			MD5Final(hash, &md5_ctx);
 			if (!memcmp(hash, na2->au.au_pw, sizeof(hash)))
 				return 1;
-- 
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