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-rw-r--r--usr.sbin/IPXrouted/input.c304
1 files changed, 0 insertions, 304 deletions
diff --git a/usr.sbin/IPXrouted/input.c b/usr.sbin/IPXrouted/input.c
deleted file mode 100644
index 651a8ae..0000000
--- a/usr.sbin/IPXrouted/input.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Copyright (c) 1985, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Copyright (c) 1995 John Hay. All rights reserved.
- *
- * This file includes significant work done at Cornell University by
- * Bill Nesheim. That work included by permission.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#ifndef lint
-static const char sccsid[] = "@(#)input.c 8.1 (Berkeley) 6/5/93";
-#endif /* not lint */
-
-/*
- * IPX Routing Table Management Daemon
- */
-#include "defs.h"
-
-struct sockaddr *
-ipx_nettosa(net)
-union ipx_net net;
-{
- static struct sockaddr_ipx sxn;
-
- bzero(&sxn, sizeof (struct sockaddr_ipx));
- sxn.sipx_family = AF_IPX;
- sxn.sipx_len = sizeof (sxn);
- sxn.sipx_addr.x_net = net;
- return( (struct sockaddr *)&sxn);
-
-}
-
-/*
- * Process a newly received packet.
- */
-void
-rip_input(from, size)
- struct sockaddr *from;
- int size;
-{
- int newsize;
- int rtchanged = 0;
- struct rt_entry *rt;
- struct netinfo *n;
- struct interface *ifp = 0;
- struct afswitch *afp;
- struct sockaddr_ipx *ipxp;
-
- ifp = if_ifwithnet(from);
- ipxp = (struct sockaddr_ipx *)from;
- if (ifp == 0) {
- if(ftrace) {
- fprintf(ftrace, "Received bogus packet from %s\n",
- ipxdp_ntoa(&ipxp->sipx_addr));
- }
- return;
- }
-
- TRACE_INPUT(ifp, from, size);
- if (from->sa_family >= AF_MAX)
- return;
- afp = &afswitch[from->sa_family];
-
- size -= sizeof (u_short) /* command */;
- n = msg->rip_nets;
-
- switch (ntohs(msg->rip_cmd)) {
-
- case RIPCMD_REQUEST:
- if (ipx_hosteq(satoipx_addr(ifp->int_addr), ipxp->sipx_addr))
- return;
- newsize = 0;
- while (size > 0) {
- if (size < sizeof (struct netinfo))
- break;
- size -= sizeof (struct netinfo);
-
- /*
- * A single entry with rip_dst == DSTNETS_ALL and
- * metric ``infinity'' means ``all routes''.
- *
- * XXX According to the IPX RIP spec the metric
- * and tick fields can be anything. So maybe we
- * should not check the metric???
- */
- if (ipx_neteqnn(n->rip_dst, ipx_anynet) &&
- ntohs(n->rip_metric) == HOPCNT_INFINITY &&
- size == 0) {
- supply(from, 0, ifp, 0);
- return;
- }
- /*
- * request for specific nets
- */
- rt = rtlookup(ipx_nettosa(n->rip_dst));
- if (ftrace) {
- fprintf(ftrace,
- "specific request for %s",
- ipxdp_nettoa(n->rip_dst));
- fprintf(ftrace,
- " yields route %lx\n",
- (u_long)rt);
- }
- /*
- * XXX We break out on the first net that isn't
- * found. The specs is a bit vague here. I'm not
- * sure what we should do.
- */
- if (rt == 0)
- return;
- /* XXX
- * According to the spec we should not include
- * information about networks for which the number
- * of hops is 16.
- */
- if (rt->rt_metric == (HOPCNT_INFINITY-1))
- return;
- n->rip_metric = htons( rt == 0 ? HOPCNT_INFINITY :
- min(rt->rt_metric+1, HOPCNT_INFINITY));
- n->rip_ticks = htons(rt->rt_ticks+1);
-
- /*
- * We use split horizon with a twist. If the requested
- * net is the directly connected net we supply an
- * answer. This is so that the host can learn about
- * the routers on its net.
- */
- {
- register struct rt_entry *trt = rt;
-
- while (trt) {
- if ((trt->rt_ifp == ifp) &&
- !ipx_neteqnn(n->rip_dst,
- satoipx_addr(ifp->int_addr).x_net))
- return;
- trt = trt->rt_clone;
- }
- n++;
- newsize += sizeof (struct netinfo);
- }
- }
- if (newsize > 0) {
- msg->rip_cmd = htons(RIPCMD_RESPONSE);
- newsize += sizeof (u_short);
- /* should check for if with dstaddr(from) first */
- (*afp->af_output)(ripsock, 0, from, newsize);
- TRACE_OUTPUT(ifp, from, newsize);
- if (ftrace) {
- /* XXX This should not happen anymore. */
- if(ifp == 0)
- fprintf(ftrace, "--- ifp = 0\n");
- else
- fprintf(ftrace,
- "request arrived on interface %s\n",
- ifp->int_name);
- }
- }
- return;
-
- case RIPCMD_RESPONSE:
- /* verify message came from a router */
- if ((*afp->af_portmatch)(from) == 0)
- return;
- (*afp->af_canon)(from);
- /* are we talking to ourselves? */
- if ((ifp = if_ifwithaddr(from)) != 0) {
- rt = rtfind(from);
- if (rt == 0 || (rt->rt_state & RTS_INTERFACE) == 0) {
- addrouteforif(ifp);
- rtchanged = 1;
- } else
- rt->rt_timer = 0;
- return;
- }
- /* Update timer for interface on which the packet arrived.
- * If from other end of a point-to-point link that isn't
- * in the routing tables, (re-)add the route.
- */
- if ((rt = rtfind(from)) && (rt->rt_state & RTS_INTERFACE)) {
- if(ftrace) fprintf(ftrace, "Got route\n");
- rt->rt_timer = 0;
- } else if ((ifp = if_ifwithdstaddr(from)) != 0) {
- if(ftrace) fprintf(ftrace, "Got partner\n");
- addrouteforif(ifp);
- rtchanged = 1;
- }
- for (; size > 0; size -= sizeof (struct netinfo), n++) {
- struct sockaddr *sa;
- if (size < sizeof (struct netinfo))
- break;
- if ((unsigned) ntohs(n->rip_metric) > HOPCNT_INFINITY)
- continue;
- rt = rtfind(sa = ipx_nettosa(n->rip_dst));
- if (rt == 0) {
- if (ntohs(n->rip_metric) == HOPCNT_INFINITY)
- continue;
- rtadd(sa, from, ntohs(n->rip_metric),
- ntohs(n->rip_ticks), 0);
- rtchanged = 1;
- continue;
- }
-
- /*
- * A clone is a different route to the same net
- * with exactly the same cost (ticks and metric).
- * They must all be recorded because those interfaces
- * must be handled in the same way as the first route
- * to that net. ie When using the split horizon
- * algorithm we must look at these interfaces also.
- *
- * Update if from gateway and different,
- * from anywhere and less ticks or
- * if same ticks and shorter,
- * or getting stale and equivalent.
- */
- if (!equal(from, &rt->rt_router) &&
- ntohs(n->rip_ticks) == rt->rt_ticks &&
- ntohs(n->rip_metric) == rt->rt_metric &&
- ntohs(n->rip_metric) != HOPCNT_INFINITY) {
- register struct rt_entry *trt = rt->rt_clone;
-
- while (trt) {
- if (equal(from, &trt->rt_router)) {
- trt->rt_timer = 0;
- break;
- }
- trt = trt->rt_clone;
- }
- if (trt == NULL) {
- rtadd_clone(rt, sa, from,
- ntohs(n->rip_metric),
- ntohs(n->rip_ticks), 0);
- }
- continue;
- }
- if ((equal(from, &rt->rt_router) &&
- ((ntohs(n->rip_ticks) != rt->rt_ticks) ||
- (ntohs(n->rip_metric) != rt->rt_metric))) ||
- (ntohs(n->rip_ticks) < rt->rt_ticks) ||
- ((ntohs(n->rip_ticks) == rt->rt_ticks) &&
- (ntohs(n->rip_metric) < rt->rt_metric)) ||
- (rt->rt_timer > (EXPIRE_TIME*2/3) &&
- rt->rt_metric == ntohs(n->rip_metric) &&
- ntohs(n->rip_metric) != HOPCNT_INFINITY)) {
- rtchange(rt, from, ntohs(n->rip_metric),
- ntohs(n->rip_ticks));
- if (ntohs(n->rip_metric) == HOPCNT_INFINITY)
- rt->rt_timer = EXPIRE_TIME;
- else
- rt->rt_timer = 0;
- rtchanged = 1;
- } else if (equal(from, &rt->rt_router) &&
- (ntohs(n->rip_ticks) == rt->rt_ticks) &&
- (ntohs(n->rip_metric) == rt->rt_metric) &&
- (ntohs(n->rip_metric) != HOPCNT_INFINITY)) {
- rt->rt_timer = 0;
- }
- }
- if (rtchanged) {
- register struct rthash *rh;
- register struct rt_entry *rt;
-
- toall(supply, NULL, 1);
- for (rh = nethash; rh < &nethash[ROUTEHASHSIZ]; rh++)
- for (rt = rh->rt_forw;
- rt != (struct rt_entry *)rh;
- rt = rt->rt_forw)
- rt->rt_state &= ~RTS_CHANGED;
- }
-
- return;
- }
-}
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