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Reviewed by: julian and Mike Mitchel

Browse Source 
Submitted by:	john Hay (John.Hay@csir.co.za)

John's IPXrouted..
this has not yet been seen to run correctly with Mike's IPX/SPX
code  (he has his own)
bringing them both in is the first step in merging the two packages
for 2.2
This commit is contained in:
julian 1995-10-26 21:28:30 +00:00
parent 7bb47639e6
commit 10b424c85f
21 changed files with 4265 additions and 0 deletions
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184
usr.sbin/IPXrouted/IPXrouted.8 Normal file
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.\" Copyright (c) 1986, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Copyright (c) 1995 John Hay. All rights reserved.
.\"
.\" 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.
.\"
.Dd Oct 11, 1995
.Dt IPXROUTED 8
.Os FreeBSD
.Sh NAME
.Nm IPXrouted
.Nd IPX Routing Information Protocol daemon
.Sh SYNOPSIS
.Nm IPXrouted
.Op Fl q
.Op Fl s
.Op Fl S
.Op Fl t
.Op Ar logfile
.Sh DESCRIPTION
.Nm IPXrouted
is invoked at boot time to manage the IPX routing tables.
The IPX routing daemon uses the Novell IPX Routing
Information Protocol in maintaining up to date kernel routing
table entries.
.Pp
Available options:
.Bl -tag -width logfile
.It Fl q
Do not supply routing information (opposite of
.Fl s
option below).
.It Fl s
Forces
.Nm IPXrouted
to supply routing information whether it is acting as an internetwork
router or not.
.It Fl S
Do not supply Service Advertizing Protocol
.Nm (SAP)
information. The default is to supply
.Nm SAP
information.
.It Fl t
All packets sent or received are
printed on the standard output. In addition,
.Nm IPXrouted
will not divorce itself from the controlling terminal
so that interrupts from the keyboard will kill the process.
.It Ar logfile
Name of file in which
.Nm IPXrouted Ns 's
actions should be logged. This log contains information
about any changes to the routing tables and a history of
recent messages sent and received which are related to
the changed route.
.El
.Pp
In normal operation
.Nm IPXrouted
listens
for routing information packets. If the host is connected to
multiple IPX networks, it periodically supplies copies
of its routing tables to any directly connected hosts
and networks.
.Pp
When
.Nm IPXrouted
is started, it uses the
.Dv SIOCGIFCONF
.Xr ioctl 2
to find those
directly connected interfaces configured into the
system and marked
.Dq up
(the software loopback interface
is ignored). If multiple interfaces
are present, it is assumed the host will forward packets
between networks.
.Nm IPXrouted
then transmits a
.Em request
packet on each interface (using a broadcast packet if
the interface supports it) and enters a loop, listening
for
.Em request
and
.Em response
packets from other hosts.
.Pp
When a
.Em request
packet is received,
.Nm IPXrouted
formulates a reply based on the information maintained in its
internal tables. The
.Em response
packet generated contains a list of known routes, each marked
with a
.Dq hop count
metric (a count of 16, or greater, is
considered
.Dq infinite ) .
The metric associated with each
route returned provides a metric
.Em relative to the sender .
.Pp
.Em Response
packets received by
.Nm IPXrouted
are used to update the routing tables if one of the following
conditions is satisfied:
.Bl -bullet
.It
No routing table entry exists for the destination network
or host, and the metric indicates the destination is ``reachable''
(i.e. the hop count is not infinite).
.It
The source host of the packet is the same as the router in the
existing routing table entry. That is, updated information is
being received from the very internetwork router through which
packets for the destination are being routed.
.It
The existing entry in the routing table has not been updated for
some time (defined to be 90 seconds) and the route is at least
as cost effective as the current route.
.It
The new route describes a shorter route to the destination than
the one currently stored in the routing tables; the metric of
the new route is compared against the one stored in the table
to decide this.
.El
.Pp
When an update is applied,
.Nm IPXrouted
records the change in its internal tables and generates a
.Em response
packet to all directly connected hosts and networks.
.Xr Routed 8
waits a short period
of time (no more than 30 seconds) before modifying the kernel's
routing tables to allow possible unstable situations to settle.
.Pp
In addition to processing incoming packets,
.Nm IPXrouted
also periodically checks the routing table entries.
If an entry has not been updated for 3 minutes, the entry's metric
is set to infinity and marked for deletion. Deletions are delayed
an additional 60 seconds to insure the invalidation is propagated
to other routers.
.Pp
Hosts acting as internetwork routers gratuitously supply their
routing tables every 30 seconds to all directly connected hosts
and networks.
.Sh SEE ALSO
.Xr ipx 4
.Sh HISTORY

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# @(#)Makefile 8.1 (Berkeley) 6/5/93
# $Id: Makefile,v 1.4 1995/03/15 08:44:14 jhay Exp $
PROG= IPXrouted
MAN8= IPXrouted.8
SRCS= af.c if.c input.c main.c output.c startup.c tables.c timer.c trace.c
SRCS+= sap_input.c sap_tables.c sap_output.c
DPADD= ${LIBCOMPAT} ${LIBIPX}
LDADD= -lcompat -lipx
.include <bsd.prog.mk>

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/*
* 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.
*
* $Id: af.c,v 1.4 1995/10/11 18:57:05 jhay Exp $
*/
#ifndef lint
static char sccsid[] = "@(#)af.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
#include "defs.h"
/*
* Address family support routines
*/
af_hash_t null_hash;
af_netmatch_t null_netmatch;
af_output_t null_output;
af_portmatch_t null_portmatch;
af_portcheck_t null_portcheck;
af_checkhost_t null_checkhost;
af_ishost_t null_ishost;
af_canon_t null_canon;
void ipxnet_hash(struct sockaddr_ipx *, struct afhash *);
int ipxnet_netmatch(struct sockaddr_ipx *, struct sockaddr_ipx *);
void ipxnet_output(int, int, struct sockaddr_ipx *, int);
int ipxnet_portmatch(struct sockaddr_ipx *);
int ipxnet_checkhost(struct sockaddr_ipx *);
int ipxnet_ishost(struct sockaddr_ipx *);
void ipxnet_canon(struct sockaddr_ipx *);
#define NIL \
{ null_hash, null_netmatch, null_output, \
null_portmatch, null_portcheck, null_checkhost, \
null_ishost, null_canon }
#define IPXNET \
{ (af_hash_t *)ipxnet_hash, \
(af_netmatch_t *)ipxnet_netmatch, \
(af_output_t *)ipxnet_output, \
(af_portmatch_t *)ipxnet_portmatch, \
(af_portcheck_t *)ipxnet_portmatch, \
(af_checkhost_t *)ipxnet_checkhost, \
(af_ishost_t *)ipxnet_ishost, \
(af_canon_t *)ipxnet_canon }
struct afswitch afswitch[AF_MAX] =
{ NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL,
NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL,
NIL, NIL, NIL, IPXNET, NIL, NIL };
struct sockaddr_ipx ipxnet_default = { sizeof(struct sockaddr_ipx), AF_IPX };
union ipx_net ipx_anynet;
union ipx_net ipx_zeronet;
void
ipxnet_hash(sipx, hp)
register struct sockaddr_ipx *sipx;
struct afhash *hp;
{
register long hash = 0;
register u_short *s = sipx->sipx_addr.x_host.s_host;
union ipx_net_u net;
net.net_e = sipx->sipx_addr.x_net;
hp->afh_nethash = net.long_e;
hash = *s++; hash <<= 8; hash += *s++; hash <<= 8; hash += *s;
hp->afh_hosthash = hash;
}
int
ipxnet_netmatch(sxn1, sxn2)
struct sockaddr_ipx *sxn1, *sxn2;
{
return (ipx_neteq(sxn1->sipx_addr, sxn2->sipx_addr));
}
/*
* Verify the message is from the right port.
*/
int
ipxnet_portmatch(sipx)
register struct sockaddr_ipx *sipx;
{
return (ntohs(sipx->sipx_addr.x_port) == IPXPORT_RIP );
}
/*
* ipx output routine.
*/
#ifdef DEBUG
int do_output = 0;
#endif
void
ipxnet_output(s, flags, sipx, size)
int s;
int flags;
struct sockaddr_ipx *sipx;
int size;
{
struct sockaddr_ipx dst;
dst = *sipx;
sipx = &dst;
if (sipx->sipx_addr.x_port == 0)
sipx->sipx_addr.x_port = htons(IPXPORT_RIP);
#ifdef DEBUG
if(do_output || ntohs(msg->rip_cmd) == RIPCMD_REQUEST)
#endif
/*
* Kludge to allow us to get routes out to machines that
* don't know their addresses yet; send to that address on
* ALL connected nets
*/
if (ipx_neteqnn(sipx->sipx_addr.x_net, ipx_zeronet)) {
extern struct interface *ifnet;
register struct interface *ifp;
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
sipx->sipx_addr.x_net =
satoipx_addr(ifp->int_addr).x_net;
(void) sendto(s, msg, size, flags,
(struct sockaddr *)sipx, sizeof (*sipx));
}
return;
}
(void) sendto(s, msg, size, flags,
(struct sockaddr *)sipx, sizeof (*sipx));
}
/*
* Return 1 if we want this route.
* We use this to disallow route net G entries for one for multiple
* point to point links.
*/
int
ipxnet_checkhost(sipx)
struct sockaddr_ipx *sipx;
{
register struct interface *ifp = if_ifwithnet((struct sockaddr *)sipx);
/*
* We want this route if there is no more than one
* point to point interface with this network.
*/
if (ifp == 0 || (ifp->int_flags & IFF_POINTOPOINT)==0) return (1);
return (ifp->int_sq.n == ifp->int_sq.p);
}
/*
* Return 1 if the address is
* for a host, 0 for a network.
*/
int
ipxnet_ishost(sipx)
struct sockaddr_ipx *sipx;
{
register u_short *s = sipx->sipx_addr.x_host.s_host;
if ((s[0]==0xffff) && (s[1]==0xffff) && (s[2]==0xffff))
return (0);
else
return (1);
}
void
ipxnet_canon(sipx)
struct sockaddr_ipx *sipx;
{
sipx->sipx_addr.x_port = 0;
}
void
null_hash(addr, hp)
struct sockaddr *addr;
struct afhash *hp;
{
hp->afh_nethash = hp->afh_hosthash = 0;
}
int
null_netmatch(a1, a2)
struct sockaddr *a1, *a2;
{
return (0);
}
void
null_output(s, f, a1, n)
int s;
int f;
struct sockaddr *a1;
int n;
{
;
}
int
null_portmatch(a1)
struct sockaddr *a1;
{
return (0);
}
int
null_portcheck(a1)
struct sockaddr *a1;
{
return (0);
}
int
null_ishost(a1)
struct sockaddr *a1;
{
return (0);
}
int
null_checkhost(a1)
struct sockaddr *a1;
{
return (0);
}
void
null_canon(a1)
struct sockaddr *a1;
{
;
}

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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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.
*
* @(#)af.h 5.1 (Berkeley) 6/4/85 (routed/af.h)
*
* @(#)af.h 8.1 (Berkeley) 6/5/93
*
* $Id: af.h,v 1.3 1995/10/11 18:57:09 jhay Exp $
*/
/*
* Routing table management daemon.
*/
/*
* Structure returned by af_hash routines.
*/
struct afhash {
u_int afh_hosthash; /* host based hash */
u_int afh_nethash; /* network based hash */
};
/*
* Per address family routines.
*/
typedef void af_hash_t(struct sockaddr *, struct afhash *);
typedef int af_netmatch_t(struct sockaddr *, struct sockaddr *);
typedef void af_output_t(int, int, struct sockaddr *, int);
typedef int af_portmatch_t(struct sockaddr *);
typedef int af_portcheck_t(struct sockaddr *);
typedef int af_checkhost_t(struct sockaddr *);
typedef int af_ishost_t(struct sockaddr *);
typedef void af_canon_t(struct sockaddr *);
struct afswitch {
af_hash_t *af_hash; /* returns keys based on address */
af_netmatch_t *af_netmatch; /* verifies net # matching */
af_output_t *af_output; /* interprets address for sending */
af_portmatch_t *af_portmatch; /* packet from some other router? */
af_portcheck_t *af_portcheck; /* packet from privileged peer? */
af_checkhost_t *af_checkhost; /* tells if address for host or net */
af_ishost_t *af_ishost; /* tells if address is valid */
af_canon_t *af_canon; /* canonicalize address for compares */
};
struct afswitch afswitch[AF_MAX]; /* table proper */

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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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.
*
* @(#)defs.h 8.1 (Berkeley) 6/5/93
*
* $Id: defs.h,v 1.5 1995/10/11 18:57:12 jhay Exp $
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <net/route.h>
#include <netipx/ipx.h>
#include <netipx/ipxdp.h>
#if defined(vax) || defined(pdp11)
#define xnnet(x) ((u_long) (x)->rip_dst[1] << 16 | (u_long) (x)->rip_dst[0] )
#else
#define xnnet(x) ((u_long) (x)->rip_dst[0] << 16 | (u_long) (x)->rip_dst[1] )
#endif
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include "protocol.h"
#include "sap.h"
#include "table.h"
#include "trace.h"
#include "interface.h"
#include "af.h"
/*
* When we find any interfaces marked down we rescan the
* kernel every CHECK_INTERVAL seconds to see if they've
* come up.
*/
#define CHECK_INTERVAL (5*60)
#define equal(a1, a2) \
(bcmp((caddr_t)(a1), (caddr_t)(a2), sizeof (struct sockaddr)) == 0)
#define min(a,b) ((a)>(b)?(b):(a))
#define max(a,b) ((a)<(b)?(b):(a))
extern int ripsock; /* Socket to listen on */
extern int sapsock; /* Socket to listen on */
extern int kmem;
extern int supplier; /* process should supply updates */
extern int dosap; /* SAP is enabled */
extern int install; /* if 1 call kernel */
extern int lookforinterfaces; /* if 1 probe kernel for new up ifs */
extern int performnlist; /* if 1 check if /kernel has changed */
extern int externalinterfaces; /* # of remote and local interfaces */
extern int timeval; /* local idea of time */
extern int noteremoterequests; /* squawk on requests from non-local nets */
extern int r; /* Routing socket to install updates with */
extern int gateway;
extern struct sockaddr_ipx ipx_netmask; /* Used in installing routes */
extern char packet[MAXPACKETSIZE+sizeof(struct ipxdp)+1];
extern struct rip *msg;
extern char **argv0;
#define ADD 1
#define DELETE 2
#define CHANGE 3
void sndmsg(struct sockaddr *, int, struct interface *);
void supply(struct sockaddr *, int, struct interface *);
void addrouteforif(struct interface *);
void ifinit(void);
void toall(void (*f)(struct sockaddr *, int, struct interface *),
struct rt_entry *);
void rip_input(struct sockaddr *, int);

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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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.
*
* static char sccsid[] = "@(#)if.c 5.1 (Berkeley) 6/4/85"; (routed/if.c)
*
* $Id: if.c,v 1.2 1995/10/11 18:57:14 jhay Exp $
*/
#ifndef lint
static char sccsid[] = "@(#)if.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* Routing Table Management Daemon
*/
#include "defs.h"
extern struct interface *ifnet;
/*
* Find the interface with address addr.
*/
struct interface *
if_ifwithaddr(addr)
struct sockaddr *addr;
{
register struct interface *ifp;
#define same(a1, a2) \
(bcmp((caddr_t)((a1)->sa_data), (caddr_t)((a2)->sa_data), 14) == 0)
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
if (ifp->int_flags & IFF_REMOTE)
continue;
if (ifp->int_addr.sa_family != addr->sa_family)
continue;
if (same(&ifp->int_addr, addr))
break;
if ((ifp->int_flags & IFF_BROADCAST) &&
same(&ifp->int_broadaddr, addr))
break;
}
return (ifp);
}
/*
* Find the point-to-point interface with destination address addr.
*/
struct interface *
if_ifwithdstaddr(addr)
struct sockaddr *addr;
{
register struct interface *ifp;
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
if ((ifp->int_flags & IFF_POINTOPOINT) == 0)
continue;
if (same(&ifp->int_dstaddr, addr))
break;
}
return (ifp);
}
/*
* Find the interface on the network
* of the specified address.
*/
struct interface *
if_ifwithnet(addr)
register struct sockaddr *addr;
{
register struct interface *ifp;
register int af = addr->sa_family;
register int (*netmatch)();
if (af >= AF_MAX)
return (0);
netmatch = afswitch[af].af_netmatch;
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
if (ifp->int_flags & IFF_REMOTE)
continue;
if (af != ifp->int_addr.sa_family)
continue;
if ((*netmatch)(addr, &ifp->int_addr))
break;
}
return (ifp);
}
/*
* Find an interface from which the specified address
* should have come from. Used for figuring out which
* interface a packet came in on -- for tracing.
*/
struct interface *
if_iflookup(addr)
struct sockaddr *addr;
{
register struct interface *ifp, *maybe;
register int af = addr->sa_family;
register int (*netmatch)();
if (af >= AF_MAX)
return (0);
maybe = 0;
netmatch = afswitch[af].af_netmatch;
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
if (ifp->int_addr.sa_family != af)
continue;
if (same(&ifp->int_addr, addr))
break;
if ((ifp->int_flags & IFF_BROADCAST) &&
same(&ifp->int_broadaddr, addr))
break;
if (maybe == 0 && (*netmatch)(addr, &ifp->int_addr))
maybe = ifp;
}
if (ifp == 0)
ifp = maybe;
return (ifp);
}

282
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/*
* 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.
*
* $Id: input.c,v 1.9 1995/10/11 18:57:17 jhay Exp $
*/
#ifndef lint
static 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;
extern char ether_broadcast_addr[6];
bzero(&sxn, sizeof (struct sockaddr_ipx));
sxn.sipx_family = AF_IPX;
sxn.sipx_len = sizeof (sxn);
sxn.sipx_addr.x_net = net;
sxn.sipx_addr.x_host = *(union ipx_host *)ether_broadcast_addr;
return( (struct sockaddr *)&sxn);
}
/*
* Process a newly received packet.
*/
void
rip_input(from, size)
struct sockaddr *from;
int size;
{
struct rt_entry *rt;
struct netinfo *n;
struct interface *ifp = 0;
int newsize;
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);
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 %x\n",
(u_int)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);
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);
}
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) {
rtadd(sa, from, ntohs(n->rip_metric),
ntohs(n->rip_ticks), 0);
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.
*
* XXX I don't think this is quite right.
*/
if (!equal(from, &rt->rt_router) &&
ntohs(n->rip_ticks == rt->rt_ticks) &&
ntohs(n->rip_metric == rt->rt_metric)) {
register struct rt_entry *trt = rt->rt_clone;
while (trt) {
if (equal(from, &trt->rt_router)) {
trt->rt_timer = 0;
break;
}
}
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))) {
rtchange(rt, from, ntohs(n->rip_metric),
ntohs(n->rip_ticks));
rt->rt_timer = 0;
} else if (equal(from, &rt->rt_router) &&
(ntohs(n->rip_ticks) == rt->rt_ticks) &&
(ntohs(n->rip_metric) == rt->rt_metric)) {
rt->rt_timer = 0;
}
}
return;
}
}

95
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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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.
*
* @(#)interface.h 8.1 (Berkeley) 6/5/93
*
* $Id: interface.h,v 1.3 1995/10/11 18:57:19 jhay Exp $
*/
/*
* Routing table management daemon.
*/
/*
* An ``interface'' is similar to an ifnet structure,
* except it doesn't contain q'ing info, and it also
* handles ``logical'' interfaces (remote gateways
* that we want to keep polling even if they go down).
* The list of interfaces which we maintain is used
* in supplying the gratuitous routing table updates.
* We list only one address for each interface, the AF_IPX one.
*/
struct interface {
struct interface *int_next;
struct sockaddr int_addr; /* address on this host */
union {
struct sockaddr intu_broadaddr;
struct sockaddr intu_dstaddr;
} int_intu;
#define int_broadaddr int_intu.intu_broadaddr /* broadcast address */
#define int_dstaddr int_intu.intu_dstaddr /* other end of p-to-p link */
int int_metric; /* init's routing entry */
int int_flags; /* see below */
struct ifdebug int_input, int_output; /* packet tracing stuff */
int int_ipackets; /* input packets received */
int int_opackets; /* output packets sent */
char *int_name; /* from kernel if structure */
u_short int_transitions; /* times gone up-down */
/* XXX IPX Specific entry */
struct sameq {
struct sameq *n; /* q of other pt-to-pt links */
struct sameq *p; /* with same net # */
} int_sq;
};
/*
* 0x1 to 0x10 are reused from the kernel's ifnet definitions,
* the others agree with the RTS_ flags defined elsewhere.
*/
#define IFF_UP 0x1 /* interface is up */
#define IFF_BROADCAST 0x2 /* broadcast address valid */
#define IFF_DEBUG 0x4 /* turn on debugging */
#define IFF_ROUTE 0x8 /* routing entry installed */
#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
#define IFF_PASSIVE 0x200000 /* can't tell if up/down */
#define IFF_INTERFACE 0x400000 /* hardware interface */
#define IFF_REMOTE 0x800000 /* interface isn't on this machine */
struct interface *if_ifwithaddr(struct sockaddr *);
struct interface *if_ifwithdstaddr(struct sockaddr *);
struct interface *if_ifwithnet(struct sockaddr *);
struct interface *if_iflookup(struct sockaddr *);

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/*
* 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.
*
* $Id: main.c,v 1.6 1995/10/11 18:57:21 jhay Exp $
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1985, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* IPX Routing Information Protocol Daemon
*/
#include "defs.h"
#include <sys/time.h>
#include <net/if.h>
#include <errno.h>
#include <nlist.h>
#include <signal.h>
#include <paths.h>
#include <stdlib.h>
#include <unistd.h>
#define SAP_PKT 0
#define RIP_PKT 1
struct sockaddr_ipx addr; /* Daemon's Address */
int ripsock; /* RIP Socket to listen on */
int sapsock; /* SAP Socket to listen on */
int kmem;
int install; /* if 1 call kernel */
int lookforinterfaces; /* if 1 probe kernel for new up interfaces */
int performnlist; /* if 1 check if /kernel has changed */
int externalinterfaces; /* # of remote and local interfaces */
int timeval; /* local idea of time */
int noteremoterequests; /* squawk on requests from non-local nets */
int r; /* Routing socket to install updates with */
struct sockaddr_ipx ipx_netmask; /* Used in installing routes */
char packet[MAXPACKETSIZE+sizeof(struct ipxdp)+1];
char **argv0;
int supplier = -1; /* process should supply updates */
int dosap = 1; /* By default do SAP services. */
struct rip *msg = (struct rip *) &packet[sizeof (struct ipxdp)];
struct sap_packet *sap_msg =
(struct sap_packet *) &packet[sizeof (struct ipxdp)];
void hup(), fkexit(), timer();
void process(int fd, int pkt_type);
int getsocket(int type, int proto, struct sockaddr_ipx *sipx);
int
main(argc, argv)
int argc;
char *argv[];
{
int nfds;
fd_set fdvar;
argv0 = argv;
argv++, argc--;
while (argc > 0 && **argv == '-') {
if (strcmp(*argv, "-s") == 0) {
supplier = 1;
argv++, argc--;
continue;
}
if (strcmp(*argv, "-q") == 0) {
supplier = 0;
argv++, argc--;
continue;
}
if (strcmp(*argv, "-R") == 0) {
noteremoterequests++;
argv++, argc--;
continue;
}
if (strcmp(*argv, "-S") == 0) {
dosap = 0;
argv++, argc--;
continue;
}
if (strcmp(*argv, "-t") == 0) {
tracepackets++;
argv++, argc--;
ftrace = stderr;
tracing = 1;
continue;
}
if (strcmp(*argv, "-g") == 0) {
gateway = 1;
argv++, argc--;
continue;
}
if (strcmp(*argv, "-l") == 0) {
gateway = -1;
argv++, argc--;
continue;
}
fprintf(stderr,
"usage: ipxrouted [ -s ] [ -q ] [ -t ] [ -g ] [ -l ]\n");
exit(1);
}
#ifndef DEBUG
if (!tracepackets)
daemon(0, 0);
#endif
openlog("IPXrouted", LOG_PID, LOG_DAEMON);
addr.sipx_family = AF_IPX;
addr.sipx_len = sizeof(addr);
addr.sipx_port = htons(IPXPORT_RIP);
ipx_anynet.s_net[0] = ipx_anynet.s_net[1] = -1;
ipx_netmask.sipx_addr.x_net = ipx_anynet;
ipx_netmask.sipx_len = 6;
ipx_netmask.sipx_family = AF_IPX;
r = socket(AF_ROUTE, SOCK_RAW, 0);
/* later, get smart about lookingforinterfaces */
if (r)
shutdown(r, 0); /* for now, don't want reponses */
else {
fprintf(stderr, "IPXrouted: no routing socket\n");
exit(1);
}
ripsock = getsocket(SOCK_DGRAM, 0, &addr);
if (ripsock < 0)
exit(1);
if (dosap) {
addr.sipx_port = htons(IPXPORT_SAP);
sapsock = getsocket(SOCK_DGRAM, 0, &addr);
if (sapsock < 0)
exit(1);
} else
sapsock = -1;
/*
* Any extra argument is considered
* a tracing log file.
*/
if (argc > 0)
traceon(*argv);
/*
* Collect an initial view of the world by
* snooping in the kernel. Then, send a request packet on all
* directly connected networks to find out what
* everyone else thinks.
*/
rtinit();
sapinit();
ifinit();
if (supplier < 0)
supplier = 0;
/* request the state of the world */
msg->rip_cmd = htons(RIPCMD_REQUEST);
msg->rip_nets[0].rip_dst = ipx_anynet;
msg->rip_nets[0].rip_metric = htons(HOPCNT_INFINITY);
msg->rip_nets[0].rip_ticks = htons(-1);
toall(sndmsg, NULL);
if (dosap) {
sap_msg->sap_cmd = htons(SAP_REQ);
sap_msg->sap[0].ServType = htons(SAP_WILDCARD);
toall(sapsndmsg, NULL);
}
signal(SIGALRM, timer);
signal(SIGHUP, hup);
signal(SIGINT, hup);
signal(SIGEMT, fkexit);
timer();
nfds = 1 + max(sapsock, ripsock);
for (;;) {
FD_ZERO(&fdvar);
if (dosap) {
FD_SET(sapsock, &fdvar);
}
FD_SET(ripsock, &fdvar);
if(select(nfds, &fdvar, (fd_set *)NULL, (fd_set *)NULL,
(struct timeval *)NULL) < 0) {
if(errno != EINTR) {
perror("during select");
exit(1);
}
}
if(FD_ISSET(ripsock, &fdvar))
process(ripsock, RIP_PKT);
if(dosap && FD_ISSET(sapsock, &fdvar))
process(sapsock, SAP_PKT);
}
}
void
process(fd, pkt_type)
int fd;
int pkt_type;
{
struct sockaddr from;
int fromlen = sizeof (from), cc, omask;
struct ipxdp *ipxdp = (struct ipxdp *)packet;
cc = recvfrom(fd, packet, sizeof (packet), 0, &from, &fromlen);
if (cc <= 0) {
if (cc < 0 && errno != EINTR)
syslog(LOG_ERR, "recvfrom: %m");
return;
}
if (tracepackets > 1 && ftrace) {
fprintf(ftrace,"rcv %d bytes on %s ",
cc, ipxdp_ntoa(&ipxdp->ipxdp_dna));
fprintf(ftrace," from %s\n", ipxdp_ntoa(&ipxdp->ipxdp_sna));
}
if (noteremoterequests &&
!ipx_neteqnn(ipxdp->ipxdp_sna.x_net, ipx_zeronet) &&
!ipx_neteq(ipxdp->ipxdp_sna, ipxdp->ipxdp_dna))
{
syslog(LOG_ERR,
"net of interface (%s) != net on ether (%s)!\n",
ipxdp_nettoa(ipxdp->ipxdp_dna.x_net),
ipxdp_nettoa(ipxdp->ipxdp_sna.x_net));
}
/* We get the IPX header in front of the RIF packet*/
cc -= sizeof (struct ipxdp);
#define mask(s) (1<<((s)-1))
omask = sigblock(mask(SIGALRM));
switch(pkt_type) {
case SAP_PKT: sap_input(&from, cc);
break;
case RIP_PKT: rip_input(&from, cc);
break;
}
sigsetmask(omask);
}
int
getsocket(type, proto, sipx)
int type, proto;
struct sockaddr_ipx *sipx;
{
int domain = sipx->sipx_family;
int retry, s, on = 1;
retry = 1;
while ((s = socket(domain, type, proto)) < 0 && retry) {
syslog(LOG_ERR, "socket: %m");
sleep(5 * retry);
retry <<= 1;
}
if (retry == 0)
return (-1);
while (bind(s, (struct sockaddr *)sipx, sizeof (*sipx)) < 0 && retry) {
syslog(LOG_ERR, "bind: %m");
sleep(5 * retry);
retry <<= 1;
}
if (retry == 0)
return (-1);
if (domain==AF_IPX) {
struct ipxdp ipxdp;
if (setsockopt(s, 0, SO_HEADERS_ON_INPUT, &on, sizeof(on))) {
syslog(LOG_ERR, "setsockopt SEE HEADERS: %m");
exit(1);
}
if (ntohs(sipx->sipx_addr.x_port) == IPXPORT_RIP)
ipxdp.ipxdp_pt = IPXPROTO_RI;
else if (ntohs(sipx->sipx_addr.x_port) == IPXPORT_SAP)
ipxdp.ipxdp_pt = IPXPROTO_SAP;
else {
syslog(LOG_ERR, "port should be either RIP or SAP");
exit(1);
}
if (setsockopt(s, 0, SO_DEFAULT_HEADERS, &ipxdp, sizeof(ipxdp))) {
syslog(LOG_ERR, "setsockopt SET HEADER: %m");
exit(1);
}
}
if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) {
syslog(LOG_ERR, "setsockopt SO_BROADCAST: %m");
exit(1);
}
return (s);
}
/*
* Fork and exit on EMT-- for profiling.
*/
void
fkexit()
{
if (fork() == 0)
exit(0);
}

224
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/*
* 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.
*
* $Id: output.c,v 1.6 1995/10/11 18:57:22 jhay Exp $
*/
#ifndef lint
static char sccsid[] = "@(#)output.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* Routing Table Management Daemon
*/
#include "defs.h"
/*
* Apply the function "f" to all non-passive
* interfaces. If the interface supports the
* use of broadcasting use it, otherwise address
* the output to the known router.
*/
void
toall(f, except)
void (*f)(struct sockaddr *, int, struct interface *);
struct rt_entry *except;
{
register struct interface *ifp;
register struct sockaddr *dst;
register int flags;
register struct rt_entry *trt;
int onlist;
extern struct interface *ifnet;
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
if (ifp->int_flags & IFF_PASSIVE)
continue;
/*
* Don't send it on interfaces in the except list.
*/
onlist = 0;
trt = except;
while(trt) {
if (ifp == trt->rt_ifp) {
onlist = 1;
break;
}
trt = trt->rt_clone;
}
if (onlist)
continue;
dst = ifp->int_flags & IFF_BROADCAST ? &ifp->int_broadaddr :
ifp->int_flags & IFF_POINTOPOINT ? &ifp->int_dstaddr :
&ifp->int_addr;
flags = ifp->int_flags & IFF_INTERFACE ? MSG_DONTROUTE : 0;
(*f)(dst, flags, ifp);
}
}
/*
* Output a preformed packet.
*/
void
sndmsg(dst, flags, ifp)
struct sockaddr *dst;
int flags;
struct interface *ifp;
{
(*afswitch[dst->sa_family].af_output)
(ripsock, flags, dst, sizeof (struct rip));
TRACE_OUTPUT(ifp, dst, sizeof (struct rip));
}
/*
* Supply dst with the contents of the routing tables.
* If this won't fit in one packet, chop it up into several.
*
* This must be done using the split horizon algorithm.
* 1. Don't send routing info to the interface from where it was received.
* 2. Don't publish an interface to itself.
* 3. If a route is received from more than one interface and the cost is
* the same, don't publish it on either interface. I am calling this
* clones.
*/
void
supply(dst, flags, ifp)
struct sockaddr *dst;
int flags;
struct interface *ifp;
{
register struct rt_entry *rt;
register struct rt_entry *crt; /* Clone route */
register struct rthash *rh;
register struct netinfo *nn;
register struct netinfo *n = msg->rip_nets;
struct rthash *base = hosthash;
struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) dst;
af_output_t *output = afswitch[dst->sa_family].af_output;
int doinghost = 1, size, metric, ticks;
union ipx_net net;
if (sipx->sipx_port == 0)
sipx->sipx_port = htons(IPXPORT_RIP);
msg->rip_cmd = ntohs(RIPCMD_RESPONSE);
again:
for (rh = base; rh < &base[ROUTEHASHSIZ]; rh++)
for (rt = rh->rt_forw; rt != (struct rt_entry *)rh; rt = rt->rt_forw) {
size = (char *)n - (char *)msg;
if (size > MAXPACKETSIZE - sizeof (struct netinfo)) {
(*output)(ripsock, flags, dst, size);
TRACE_OUTPUT(ifp, dst, size);
n = msg->rip_nets;
}
/*
* This should do rule one and two of the split horizon
* algorithm.
*/
if (rt->rt_ifp == ifp)
continue;
/*
* Rule 3.
* Look if we have clones (different routes to the same
* place with exactly the same cost).
*
* We should not publish on any of the clone interfaces.
*/
crt = rt->rt_clone;
while (crt) {
if (crt->rt_ifp == ifp)
continue;
crt = crt->rt_clone;
}
sipx = (struct sockaddr_ipx *)&rt->rt_dst;
if ((rt->rt_flags & (RTF_HOST|RTF_GATEWAY)) == RTF_HOST)
sipx = (struct sockaddr_ipx *)&rt->rt_router;
if (rt->rt_metric == HOPCNT_INFINITY)
metric = HOPCNT_INFINITY;
else {
metric = rt->rt_metric + 1;
/*
* We don't advertize routes with more than 15 hops.
*/
if (metric >= HOPCNT_INFINITY)
continue;
}
/* XXX One day we should cater for slow interfaces also. */
ticks = rt->rt_ticks + 1;
net = sipx->sipx_addr.x_net;
/*
* Make sure that we don't put out a two net entries
* for a pt to pt link (one for the G route, one for the if)
* This is a kludge, and won't work if there are lots of nets.
*/
for (nn = msg->rip_nets; nn < n; nn++) {
if (ipx_neteqnn(net, nn->rip_dst)) {
if (ticks < ntohs(nn->rip_ticks)) {
nn->rip_metric = htons(metric);
nn->rip_ticks = htons(ticks);
} else if ((ticks == ntohs(nn->rip_ticks)) &&
(metric < ntohs(nn->rip_metric))) {
nn->rip_metric = htons(metric);
nn->rip_ticks = htons(ticks);
}
goto next;
}
}
n->rip_dst = net;
n->rip_metric = htons(metric);
n->rip_ticks = htons(ticks);
n++;
next:;
}
if (doinghost) {
doinghost = 0;
base = nethash;
goto again;
}
if (n != msg->rip_nets) {
size = (char *)n - (char *)msg;
(*output)(ripsock, flags, dst, size);
TRACE_OUTPUT(ifp, dst, size);
}
}

91
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/*
* 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.
*
* @(#)protocol.h 8.1 (Berkeley) 6/5/93
*
* $Id: protocol.h,v 1.4 1995/10/11 18:57:24 jhay Exp $
*/
/*
* IPX Routing Information Protocol
*
*/
struct netinfo {
union ipx_net rip_dst; /* destination net */
u_short rip_metric; /* cost of route */
u_short rip_ticks; /* cost of route */
};
struct rip {
u_short rip_cmd; /* request/response */
struct netinfo rip_nets[1]; /* variable length */
};
/*
* Packet types.
*/
#define RIPCMD_REQUEST 1 /* want info */
#define RIPCMD_RESPONSE 2 /* responding to request */
#define RIPCMD_MAX 3
#ifdef RIPCMDS
char *ripcmds[RIPCMD_MAX] =
{ "#0", "REQUEST", "RESPONSE" };
#endif
#define HOPCNT_INFINITY 16 /* per IPX */
#define DSTNETS_ALL 0xffffffff /* per IPX */
#define MAXPACKETSIZE 512 /* max broadcast size */
extern union ipx_net ipx_anynet;
extern union ipx_net ipx_zeronet;
/*
* Timer values used in managing the routing table.
* Every update forces an entry's timer to be reset. After
* EXPIRE_TIME without updates, the entry is marked invalid,
* but held onto until GARBAGE_TIME so that others may
* see it "be deleted".
*/
#define TIMER_RATE 30 /* alarm clocks every 30 seconds */
#define SUPPLY_INTERVAL 30 /* time to supply tables */
#define RIP_INTERVAL 60 /* time to supply rip tables */
#define EXPIRE_TIME 180 /* time to mark entry invalid */
#define GARBAGE_TIME 240 /* time to garbage collect */

106
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/*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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 John Hay.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY John Hay 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 John Hay 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.
*
* $Id: sap.h,v 1.5 1995/10/11 18:57:26 jhay Exp $
*/
#ifndef _SAP_H_
#define _SAP_H_
#define SAP_REQ 1
#define SAP_RESP 2
#define SAP_REQ_NEAR 3
#define SAP_RESP_NEAR 4
#define SAPCMD_MAX 5
#ifdef SAPCMDS
char *sapcmds[SAPCMD_MAX] =
{ "#0", "REQUEST", "RESPONSE", "REQ NEAREST", "RESP NEAREST"};
#endif
#define SAP_WILDCARD 0xFFFF
#define SERVNAMELEN 48
typedef struct sap_info {
u_short ServType;
char ServName[SERVNAMELEN];
struct ipx_addr ipx;
u_short hops;
}sap_info;
typedef struct sap_packet {
u_short sap_cmd;
sap_info sap[0]; /* Variable length. */
}sap_packet;
typedef struct sap_entry {
struct sap_entry *forw;
struct sap_entry *back;
struct sap_entry *clone;
struct interface *ifp;
struct sap_info sap;
struct sockaddr source;
int hash;
int state;
int timer;
int metric;
}sap_entry;
#define SAPHASHSIZ 32 /* Should be a power of 2 */
#define SAPHASHMASK (SAPHASHSIZ-1)
typedef struct sap_hash {
struct sap_entry *forw;
struct sap_entry *back;
}sap_hash;
extern sap_hash sap_head[SAPHASHSIZ];
extern struct sap_packet *sap_msg;
void sapinit(void);
void sap_input(struct sockaddr *from, int size);
void sapsndmsg(struct sockaddr *dst, int flags, struct interface *ifp);
void sap_supply_toall(void);
void sap_supply(struct sockaddr *dst,
int flags,
struct interface *ifp,
int ServType);
struct sap_entry *sap_lookup(u_short ServType, char *ServName);
struct sap_entry *sap_nearestserver(ushort ServType, struct interface *ifp);
void sap_add(struct sap_info *si, struct sockaddr *from);
void sap_change(struct sap_entry *sap,
struct sap_info *si,
struct sockaddr *from);
void sap_add_clone(struct sap_entry *sap,
struct sap_info *clone,
struct sockaddr *from);
void sap_delete(struct sap_entry *sap);
#endif /*_SAP_H_*/

180
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/*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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 John Hay.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY John Hay 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 John Hay 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.
*
* $Id: sap_input.c,v 1.6 1995/10/11 18:57:27 jhay Exp $
*/
/*
* IPX Routing Table Management Daemon
*/
#include "defs.h"
/*
* Process a newly received packet.
*/
void
sap_input(from, size)
struct sockaddr *from;
int size;
{
struct sap_entry *sap;
struct sap_info *n;
struct interface *ifp = 0;
int newsize;
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;
}
if (ftrace)
dumpsappacket(ftrace, "received", from, (char *)sap_msg , size);
if (from->sa_family >= AF_MAX)
return;
afp = &afswitch[from->sa_family];
size -= sizeof (u_short) /* command */;
n = sap_msg->sap;
switch (ntohs(sap_msg->sap_cmd)) {
case SAP_REQ_NEAR:
if (ftrace)
fprintf(ftrace, "Received a sap REQ_NEAR packet.\n");
sap = sap_nearestserver(n->ServType, ifp);
if (sap == NULL)
return;
sap_msg->sap_cmd = htons(SAP_RESP_NEAR);
*n = sap->sap;
n->hops = htons(ntohs(n->hops) + 1);
if (ntohs(n->hops) >= HOPCNT_INFINITY)
return;
newsize = sizeof(struct sap_info) + sizeof(struct sap_packet);
(*afp->af_output)(sapsock, 0, from, newsize);
if (ftrace) {
fprintf(ftrace, "sap_nearestserver %X %s returned:\n",
ntohs(n->ServType),
ifp->int_name);
fprintf(ftrace, " service %04X %-20.20s "
"addr %s.%04X metric %d\n",
ntohs(sap->sap.ServType),
sap->sap.ServName,
ipxdp_ntoa(&sap->sap.ipx),
ntohs(sap->sap.ipx.x_port),
ntohs(sap->sap.hops));
}
return;
case SAP_REQ:
if (ftrace)
fprintf(ftrace, "Received a sap REQ packet.\n");
sap_supply(from, 0, ifp, n->ServType);
return;
case SAP_RESP_NEAR:
/* XXX We do nothing here, for the moment.
* Maybe we should check if the service is in our table?
*
*/
if (ftrace)
fprintf(ftrace, "Received a sap RESP_NEAR packet.\n");
return;
case SAP_RESP:
if (ftrace)
fprintf(ftrace, "Received a sap RESP packet.\n");
(*afp->af_canon)(from);
for (; size > 0; size -= sizeof (struct sap_info), n++) {
if (size < sizeof (struct netinfo))
break;
sap = sap_lookup(n->ServType, n->ServName);
if (sap == 0) {
sap_add(n, from);
continue;
}
/*
* A clone is a different route to the same service
* with exactly the same cost (metric).
* They must all be recorded because those interfaces
* must be handled in the same way as the first route
* to that service. ie When using the split horizon
* algorithm we must look at these interfaces also.
*
* Update if from gateway and different,
* from anywhere and less hops or
* getting stale and equivalent.
*
* XXX I don't think this is quite right yet.
*/
if (((ifp != sap->ifp) ||
!equal(&sap->source, from)) &&
(n->hops == sap->sap.hops) &&
(ntohs(n->hops) != HOPCNT_INFINITY)) {
register struct sap_entry *tsap = sap->clone;
while (tsap) {
if ((ifp == tsap->ifp) &&
equal(&tsap->source, from)) {
tsap->timer = 0;
break;
}
}
if (tsap == NULL) {
sap_add_clone(sap, n, from);
}
continue;
}
if (((ifp == sap->ifp) &&
equal(&sap->source, from) &&
(n->hops != sap->sap.hops)) ||
(ntohs(n->hops) < ntohs(sap->sap.hops)) ||
(sap->timer > (EXPIRE_TIME*2/3) &&
ntohs(sap->sap.hops) == ntohs(n->hops))) {
sap_change(sap, n, from);
}
}
return;
}
}

182
usr.sbin/IPXrouted/sap_output.c Normal file
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/*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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 John Hay.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY John Hay 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 John Hay 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.
*
* $Id: sap_output.c,v 1.4 1995/10/11 18:57:28 jhay Exp $
*/
/*
* Routing Table Management Daemon
*/
#include "defs.h"
/*
* Apply the function "f" to all non-passive
* interfaces. If the interface supports the
* use of broadcasting use it, otherwise address
* the output to the known router.
*/
void
sap_supply_toall(void)
{
register struct interface *ifp;
struct sockaddr dst;
register struct sockaddr_ipx *ipx_dst;
register int flags;
extern struct interface *ifnet;
ipx_dst = (struct sockaddr_ipx *)&dst;
for (ifp = ifnet; ifp; ifp = ifp->int_next) {
if (ifp->int_flags & IFF_PASSIVE)
continue;
dst = ifp->int_flags & IFF_BROADCAST ? ifp->int_broadaddr :
ifp->int_flags & IFF_POINTOPOINT ? ifp->int_dstaddr :
ifp->int_addr;
if (ipx_dst->sipx_addr.x_port == 0)
ipx_dst->sipx_addr.x_port = htons(IPXPORT_SAP);
flags = ifp->int_flags & IFF_INTERFACE ? MSG_DONTROUTE : 0;
sap_supply(&dst, flags, ifp, SAP_WILDCARD);
}
}
void
sapsndmsg(dst, flags, ifp)
struct sockaddr *dst;
int flags;
struct interface *ifp;
{
struct sockaddr t_dst;
struct sockaddr_ipx *ipx_dst;
t_dst = *dst;
ipx_dst = (struct sockaddr_ipx *)&t_dst;
if (ipx_dst->sipx_addr.x_port == 0)
ipx_dst->sipx_addr.x_port = htons(IPXPORT_SAP);
(*afswitch[dst->sa_family].af_output)
(sapsock, flags, &t_dst,
sizeof (struct sap_packet) + sizeof(u_short));
TRACE_SAP_OUTPUT(ifp, &t_dst,
sizeof (struct sap_packet) + sizeof(u_short));
}
/*
* Supply dst with the contents of the SAP tables. If the ServType ==
* SAP_WILDCARD (0xFFFF) supply the whole table, otherwise only the
* services that are of ServType. If this won't fit in one packet, chop
* it up into several.
*
* This must be done using the split horizon algorithm.
* 1. Don't send SAP info to the interface from where it was received.
* 2. If a service is received from more than one interface and the cost is
* the same, don't publish it on either interface. I am calling this
* clones.
*/
void
sap_supply(dst, flags, ifp, ServType)
struct sockaddr *dst;
int flags;
struct interface *ifp;
int ServType;
{
register struct sap_entry *sap;
register struct sap_entry *csap; /* Clone route */
register struct sap_hash *sh;
register struct sap_info *n = sap_msg->sap;
struct sap_hash *base = sap_head;
struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) dst;
af_output_t *output = afswitch[dst->sa_family].af_output;
int size, metric;
if (sipx->sipx_port == 0)
sipx->sipx_port = htons(IPXPORT_SAP);
sap_msg->sap_cmd = ntohs(SAP_RESP);
for (sh = base; sh < &base[SAPHASHSIZ]; sh++)
for (sap = sh->forw; sap != (struct sap_entry *)sh; sap = sap->forw) {
size = (char *)n - (char *)sap_msg;
if (size > MAXPACKETSIZE - sizeof (struct sap_info)) {
(*output)(sapsock, flags, dst, size);
TRACE_SAP_OUTPUT(ifp, dst, size);
n = sap_msg->sap;
}
/*
* Check for the servicetype except if the ServType is
* a wildcard (0xFFFF).
*/
if ((ServType != SAP_WILDCARD) &&
(ServType != sap->sap.ServType))
continue;
/*
* This should do rule one and two of the split horizon
* algorithm.
*/
if (sap->ifp == ifp)
continue;
/*
* Rule 2.
* Look if we have clones (different routes to the same
* place with exactly the same cost).
*
* We should not publish on any of the clone interfaces.
*/
csap = sap->clone;
while (csap) {
if (csap->ifp == ifp)
continue;
csap = csap->clone;
}
/*
* Don't advertise services with more than 15 hops. It
* will be confused with a service that has gone down.
*/
if (ntohs(sap->sap.hops) == (HOPCNT_INFINITY - 1))
continue;
metric = min(ntohs(sap->sap.hops) + 1, HOPCNT_INFINITY);
*n = sap->sap;
n->hops = htons(metric);
n++;
}
if (n != sap_msg->sap) {
size = (char *)n - (char *)sap_msg;
(*output)(sapsock, flags, dst, size);
TRACE_SAP_OUTPUT(ifp, dst, size);
}
}

326
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/*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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 John Hay.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY John Hay 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 John Hay 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.
*
* $Id: sap_tables.c,v 1.9 1995/10/11 18:57:29 jhay Exp $
*/
#include "defs.h"
#include <string.h>
#include <stdlib.h>
/* XXX I thought that this should work! #include <sys/systm.h> */
#include <machine/cpufunc.h>
#define FIXLEN(s) { if ((s)->sa_len == 0) (s)->sa_len = sizeof (*(s));}
sap_hash sap_head[SAPHASHSIZ];
void
sapinit(void)
{
int i;
for (i=0; i<SAPHASHSIZ; i++)
sap_head[i].forw = sap_head[i].back =
(struct sap_entry *)&sap_head[i];
}
/*
* XXX Make sure that this hash is good enough.
*
* This hash use the first 8 letters of the ServName and the ServType
* to create a 32 bit hash value.
*
* NOTE: The first two letters of ServName will be used to generate
* the lower bits of the hash. This is used to index into the hash table.
*/
#define rol(x) (((x * 2) & 0xFFFF) + ((x & 0x8000) != 0))
int
saphash(u_short ServType, char *ServName)
{
int hsh, i;
char name[SERVNAMELEN];
bzero(name, SERVNAMELEN);
strncpy(name, ServName, SERVNAMELEN);
ServName = name;
hsh = 0;
for (i=0;i<8;i++) {
hsh = rol(hsh) + *ServName;
ServName++;
}
hsh = rol(hsh) + (ServType >> 8);
hsh = rol(hsh) + (ServType & 0xff);
hsh = (hsh >> 7) ^ hsh;
return hsh;
}
/*
* Look for an exact match on ServType and ServName. It is
* mostly used by the function that process SAP RESPONSE packets.
*
* A hash is created and used to index into the hash table. Then
* that list is walk through searching for a match.
*
* If no match is found NULL is returned.
*/
struct sap_entry *
sap_lookup(u_short ServType, char *ServName)
{
register struct sap_entry *sap;
register struct sap_hash *sh;
int hsh;
hsh = saphash(ServType, ServName);
sh = &sap_head[hsh & SAPHASHMASK];
for(sap = sh->forw; sap != (sap_entry *)sh; sap = sap->forw) {
if ((hsh == sap->hash) &&
(ServType == sap->sap.ServType) &&
(strncmp(ServName, sap->sap.ServName, SERVNAMELEN) == 0)) {
return sap;
}
}
return NULL;
}
/*
* This returns the nearest service of the specified type. If no
* suitable service is found or if that service is on the interface
* where the request came from, NULL is returned.
*
* When checking interfaces clones must be considered also.
*
* XXX TODO:
* Maybe we can use RIP tables to get the fastest service (ticks).
*/
struct sap_entry *
sap_nearestserver(ushort ServType, struct interface *ifp)
{
register struct sap_entry *sap;
register struct sap_entry *csap;
struct sap_hash *sh;
register struct sap_entry *best = NULL;
register int besthops = HOPCNT_INFINITY;
sh = sap_head;
for (; sh < &sap_head[SAPHASHSIZ]; sh++)
for(sap = sh->forw; sap != (sap_entry *)sh; sap = sap->forw) {
if (ServType != sap->sap.ServType)
continue;
if (ifp == sap->ifp)
continue;
csap = sap->clone;
while (csap) {
if (ifp == csap->ifp)
/*
* I would have loved to use
* something else here.
*/
goto next;
csap = csap->clone;
}
if (ntohs(sap->sap.hops) < besthops) {
best = sap;
besthops = ntohs(best->sap.hops);
}
next:;
}
return best;
}
/*
* Add a entry to the SAP table.
*
* If the malloc fail, the entry will silently be thrown away.
*/
void
sap_add(struct sap_info *si, struct sockaddr *from)
{
register struct sap_entry *nsap;
register struct sap_hash *sh;
FIXLEN(from);
nsap = malloc(sizeof(struct sap_entry));
if (nsap == NULL)
return;
nsap->sap = *si;
nsap->source = *from;
nsap->clone = NULL;
nsap->ifp = if_ifwithnet(from);
nsap->state = RTS_CHANGED;
nsap->timer = 0;
nsap->hash = saphash(si->ServType, si->ServName);
sh = &sap_head[nsap->hash & SAPHASHMASK];
insque(nsap, sh);
}
/*
* Change an existing SAP entry. If a clone exist for the old one,
* check if it is cheaper. If it is change tothe clone, otherwise
* delete all the clones.
*/
void
sap_change(struct sap_entry *sap,
struct sap_info *si,
struct sockaddr *from)
{
struct sap_entry *osap = NULL;
FIXLEN(from);
/*
* If the hopcount (metric) is HOPCNT_INFINITY (16) it means that
* a service has gone down. We should keep it like that for 30
* seconds, so that it will get broadcast and then change to a
* clone if one exist.
*/
if (sap->clone && (ntohs(si->hops) != HOPCNT_INFINITY)) {
/*
* There are three possibilities:
* 1. The new path is cheaper than the old one.
* Free all the clones.
*
* 2. The new path is the same cost as the old ones.
* If it is on the list of clones remove it
* from the clone list and free it.
*
* 3. The new path is more expensive than the old one.
* Use the values of the first clone and take it
* out of the list, to be freed at the end.
*/
osap = sap->clone;
if (ntohs(osap->sap.hops) > ntohs(si->hops)) {
struct sap_entry *nsap;
while (osap) {
nsap = osap->clone;
free(osap);
osap = nsap;
}
sap->clone = NULL;
} else if (ntohs(osap->sap.hops) == ntohs(si->hops)) {
struct sap_entry *psap;
psap = sap;
while (osap) {
if (equal(&osap->source, from)) {
psap->clone = osap->clone;
free(osap);
osap = psap->clone;
} else {
psap = osap;
osap = osap->clone;
}
}
} else {
from = &osap->source;
si = &osap->sap;
sap->clone = osap->clone;
}
}
sap->sap = *si;
sap->source = *from;
sap->ifp = if_ifwithnet(from);
sap->state = RTS_CHANGED;
if (ntohs(si->hops) == HOPCNT_INFINITY)
sap->timer = EXPIRE_TIME;
else
sap->timer = 0;
if (osap)
free(osap);
}
/*
* Add a clone to the specified SAP entry. A clone is a different
* route to the same service. We must know about them when we use
* the split horizon algorithm.
*
* If the malloc fail, the entry will silently be thrown away.
*/
void
sap_add_clone(struct sap_entry *sap,
struct sap_info *clone,
struct sockaddr *from)
{
register struct sap_entry *nsap;
register struct sap_entry *csap;
FIXLEN(from);
nsap = malloc(sizeof(struct sap_entry));
if (nsap == NULL)
return;
if (ftrace)
fprintf(ftrace, "CLONE ADD %04.4X %s.\n",
ntohs(clone->ServType),
clone->ServName);
nsap->sap = *clone;
nsap->source = *from;
nsap->clone = NULL;
nsap->ifp = if_ifwithnet(from);
nsap->state = RTS_CHANGED;
nsap->timer = 0;
nsap->hash = saphash(clone->ServType, clone->ServName);
csap = sap;
while (csap->clone)
csap = csap->clone;
csap->clone = nsap;
}
/*
* Remove a SAP entry from the table and free the memory
* used by it.
*
* If the service have clone, do a sap_change to it and free
* the clone.
*/
void
sap_delete(struct sap_entry *sap)
{
if (sap->clone) {
sap_change(sap, &sap->clone->sap, &sap->clone->source);
return;
}
remque(sap);
free(sap);
}

277
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/*
* 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.
*
* $Id: startup.c,v 1.3 1995/10/11 18:57:30 jhay Exp $
*/
#ifndef lint
static char sccsid[] = "@(#)startup.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* Routing Table Management Daemon
*/
#include "defs.h"
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <nlist.h>
#include <stdlib.h>
struct interface *ifnet;
int lookforinterfaces = 1;
int performnlist = 1;
int gateway = 0;
int externalinterfaces = 0; /* # of remote and local interfaces */
char ether_broadcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
void
quit(s)
char *s;
{
extern int errno;
int sverrno = errno;
(void) fprintf(stderr, "IPXroute: ");
if (s)
(void) fprintf(stderr, "%s: ", s);
(void) fprintf(stderr, "%s\n", strerror(sverrno));
exit(1);
/* NOTREACHED */
}
struct rt_addrinfo info;
/* Sleazy use of local variables throughout file, warning!!!! */
#define netmask info.rti_info[RTAX_NETMASK]
#define ifaaddr info.rti_info[RTAX_IFA]
#define brdaddr info.rti_info[RTAX_BRD]
#define ROUNDUP(a) \
((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
void
rt_xaddrs(cp, cplim, rtinfo)
register caddr_t cp, cplim;
register struct rt_addrinfo *rtinfo;
{
register struct sockaddr *sa;
register int i;
bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
if ((rtinfo->rti_addrs & (1 << i)) == 0)
continue;
rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
ADVANCE(cp, sa);
}
}
/*
* Find the network interfaces which have configured themselves.
* If the interface is present but not yet up (for example an
* ARPANET IMP), set the lookforinterfaces flag so we'll
* come back later and look again.
*/
void
ifinit(void)
{
struct interface ifs, *ifp;
size_t needed;
int mib[6], no_ipxaddr = 0, flags = 0;
char *buf, *cplim, *cp;
register struct if_msghdr *ifm;
register struct ifa_msghdr *ifam;
struct sockaddr_dl *sdl = 0;
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = AF_IPX;
mib[4] = NET_RT_IFLIST;
mib[5] = 0;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
quit("route-sysctl-estimate");
if ((buf = malloc(needed)) == NULL)
quit("malloc");
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
lookforinterfaces = 0;
cplim = buf + needed;
for (cp = buf; cp < cplim; cp += ifm->ifm_msglen) {
ifm = (struct if_msghdr *)cp;
if (ifm->ifm_type == RTM_IFINFO) {
bzero(&ifs, sizeof(ifs));
ifs.int_flags = flags = ifm->ifm_flags | IFF_INTERFACE;
if ((flags & IFF_UP) == 0 || no_ipxaddr)
lookforinterfaces = 1;
sdl = (struct sockaddr_dl *) (ifm + 1);
sdl->sdl_data[sdl->sdl_nlen] = 0;
no_ipxaddr = 1;
continue;
}
if (ifm->ifm_type != RTM_NEWADDR)
quit("ifinit: out of sync");
if ((flags & IFF_UP) == 0)
continue;
ifam = (struct ifa_msghdr *)ifm;
info.rti_addrs = ifam->ifam_addrs;
rt_xaddrs((char *)(ifam + 1), cp + ifam->ifam_msglen, &info);
if (ifaaddr == 0) {
syslog(LOG_ERR, "%s: (get addr)", sdl->sdl_data);
continue;
}
ifs.int_addr = *ifaaddr;
if (ifs.int_addr.sa_family != AF_IPX)
continue;
no_ipxaddr = 0;
if (ifs.int_flags & IFF_POINTOPOINT) {
if (brdaddr == 0) {
syslog(LOG_ERR, "%s: (get dstaddr)",
sdl->sdl_data);
continue;
}
if (brdaddr->sa_family == AF_UNSPEC) {
lookforinterfaces = 1;
continue;
}
ifs.int_dstaddr = *brdaddr;
}
if (ifs.int_flags & IFF_BROADCAST) {
if (brdaddr == 0) {
syslog(LOG_ERR, "%s: (get broadaddr)",
sdl->sdl_data);
continue;
}
ifs.int_dstaddr = *brdaddr;
}
/*
* already known to us?
* what makes a POINTOPOINT if unique is its dst addr,
* NOT its source address
*/
if ( ((ifs.int_flags & IFF_POINTOPOINT) &&
if_ifwithdstaddr(&ifs.int_dstaddr)) ||
( ((ifs.int_flags & IFF_POINTOPOINT) == 0) &&
if_ifwithaddr(&ifs.int_addr)))
continue;
/* no one cares about software loopback interfaces */
if (ifs.int_flags & IFF_LOOPBACK)
continue;
ifp = (struct interface *)
malloc(sdl->sdl_nlen + 1 + sizeof(ifs));
if (ifp == 0) {
syslog(LOG_ERR, "IPXrouted: out of memory\n");
lookforinterfaces = 1;
break;
}
*ifp = ifs;
/*
* Count the # of directly connected networks
* and point to point links which aren't looped
* back to ourself. This is used below to
* decide if we should be a routing ``supplier''.
*/
if ((ifs.int_flags & IFF_POINTOPOINT) == 0 ||
if_ifwithaddr(&ifs.int_dstaddr) == 0)
externalinterfaces++;
/*
* If we have a point-to-point link, we want to act
* as a supplier even if it's our only interface,
* as that's the only way our peer on the other end
* can tell that the link is up.
*/
if ((ifs.int_flags & IFF_POINTOPOINT) && supplier < 0)
supplier = 1;
ifp->int_name = (char *)(ifp + 1);
strcpy(ifp->int_name, sdl->sdl_data);
ifp->int_metric = ifam->ifam_metric;
ifp->int_next = ifnet;
ifnet = ifp;
traceinit(ifp);
addrouteforif(ifp);
}
if (externalinterfaces > 1 && supplier < 0)
supplier = 1;
free(buf);
}
void
addrouteforif(ifp)
struct interface *ifp;
{
struct sockaddr *dst;
struct rt_entry *rt;
if (ifp->int_flags & IFF_POINTOPOINT) {
int (*match)();
register struct interface *ifp2 = ifnet;
dst = &ifp->int_dstaddr;
/* Search for interfaces with the same net */
ifp->int_sq.n = ifp->int_sq.p = &(ifp->int_sq);
match = afswitch[dst->sa_family].af_netmatch;
if (match)
for (ifp2 = ifnet; ifp2; ifp2 =ifp2->int_next) {
if (ifp->int_flags & IFF_POINTOPOINT == 0)
continue;
if ((*match)(&ifp2->int_dstaddr,&ifp->int_dstaddr)) {
insque(&ifp2->int_sq,&ifp->int_sq);
break;
}
}
} else {
dst = &ifp->int_broadaddr;
}
rt = rtlookup(dst);
if (rt)
rtdelete(rt);
if (tracing)
fprintf(stderr, "Adding route to interface %s\n", ifp->int_name);
if (ifp->int_transitions++ > 0)
syslog(LOG_ERR, "re-installing interface %s", ifp->int_name);
rtadd(dst, &ifp->int_addr, ifp->int_metric, 0,
ifp->int_flags & (IFF_INTERFACE|IFF_PASSIVE|IFF_REMOTE));
}

116
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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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.
*
* @(#)table.h 5.1 (Berkeley) 6/4/85 (routed/table.h)
*
* @(#)table.h 8.1 (Berkeley) 6/5/93
*
* $Id: table.h,v 1.4 1995/10/11 18:57:30 jhay Exp $
*/
/*
* Routing table management daemon.
*/
/*
* Routing table structure; differs a bit from kernel tables.
*
* Note: the union below must agree in the first 4 members
* so the ioctl's will work.
*/
struct rthash {
struct rt_entry *rt_forw;
struct rt_entry *rt_back;
};
#ifdef RTM_ADD
#define rtentry ortentry
#endif
struct rt_entry {
struct rt_entry *rt_forw;
struct rt_entry *rt_back;
union {
struct rtentry rtu_rt;
struct rtuentry {
u_long rtu_hash;
struct sockaddr rtu_dst;
struct sockaddr rtu_router;
short rtu_rtflags; /* used by old rtioctl */
short rtu_wasted; /* XXX routed does it this way. */
int rtu_flags;
int rtu_state;
int rtu_timer;
int rtu_metric;
int rtu_ticks;
struct interface *rtu_ifp;
} rtu_entry;
} rt_rtu;
struct rt_entry *rt_clone;
};
#define rt_rt rt_rtu.rtu_entry /* pass to ioctl */
#define rt_hash rt_rtu.rtu_entry.rtu_hash /* for net or host */
#define rt_dst rt_rtu.rtu_entry.rtu_dst /* match value */
#define rt_router rt_rtu.rtu_entry.rtu_router /* who to forward to */
#define rt_flags rt_rtu.rtu_entry.rtu_flags /* kernel flags */
#define rt_timer rt_rtu.rtu_entry.rtu_timer /* for invalidation */
#define rt_state rt_rtu.rtu_entry.rtu_state /* see below */
#define rt_metric rt_rtu.rtu_entry.rtu_metric /* cost of route */
#define rt_ticks rt_rtu.rtu_entry.rtu_ticks /* time of route */
#define rt_ifp rt_rtu.rtu_entry.rtu_ifp /* interface to take */
#define ROUTEHASHSIZ 32 /* must be a power of 2 */
#define ROUTEHASHMASK (ROUTEHASHSIZ - 1)
/*
* "State" of routing table entry.
*/
#define RTS_CHANGED 0x1 /* route has been altered recently */
#define RTS_PASSIVE IFF_PASSIVE /* don't time out route */
#define RTS_INTERFACE IFF_INTERFACE /* route is for network interface */
#define RTS_REMOTE IFF_REMOTE /* route is for ``remote'' entity */
struct rthash nethash[ROUTEHASHSIZ];
struct rthash hosthash[ROUTEHASHSIZ];
struct rt_entry *rtlookup(struct sockaddr *);
struct rt_entry *rtfind(struct sockaddr *);
void rtadd(struct sockaddr *, struct sockaddr *, short, short, int);
void rtadd_clone(struct rt_entry *, struct sockaddr *, struct sockaddr *,
short, short, int);
void rtchange(struct rt_entry *, struct sockaddr *, short, short);
void rtdelete(struct rt_entry *);
int rtioctl(int, struct rtuentry *);
void rtinit(void);

466
usr.sbin/IPXrouted/tables.c Normal file
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/*
* Copyright (c) 1985, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1995 John Hay. All rights reserved.
*
* 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.
*
* $Id: tables.c,v 1.6 1995/10/11 18:57:31 jhay Exp $
*/
#ifndef lint
static char sccsid[] = "@(#)tables.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* Routing Table Management Daemon
*/
#include "defs.h"
#include <sys/ioctl.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
/* XXX I thought that this should work! #include <sys/systm.h> */
#include <machine/cpufunc.h>
#ifndef DEBUG
#define DEBUG 0
#endif
#define FIXLEN(s) { if ((s)->sa_len == 0) (s)->sa_len = sizeof (*(s));}
int install = !DEBUG; /* if 1 call kernel */
int delete = 1;
/*
* Lookup dst in the tables for an exact match.
*/
struct rt_entry *
rtlookup(dst)
struct sockaddr *dst;
{
register struct rt_entry *rt;
register struct rthash *rh;
register u_int hash;
struct afhash h;
int doinghost = 1;
if (dst->sa_family >= AF_MAX)
return (0);
(*afswitch[dst->sa_family].af_hash)(dst, &h);
hash = h.afh_hosthash;
rh = &hosthash[hash & ROUTEHASHMASK];
again:
for (rt = rh->rt_forw; rt != (struct rt_entry *)rh; rt = rt->rt_forw) {
if (rt->rt_hash != hash)
continue;
if (equal(&rt->rt_dst, dst))
return (rt);
}
if (doinghost) {
doinghost = 0;
hash = h.afh_nethash;
rh = &nethash[hash & ROUTEHASHMASK];
goto again;
}
return (0);
}
/*
* Find a route to dst as the kernel would.
*/
struct rt_entry *
rtfind(dst)
struct sockaddr *dst;
{
register struct rt_entry *rt;
register struct rthash *rh;
register u_int hash;
struct afhash h;
int af = dst->sa_family;
int doinghost = 1, (*match)() = 0;
if (af >= AF_MAX)
return (0);
(*afswitch[af].af_hash)(dst, &h);
hash = h.afh_hosthash;
rh = &hosthash[hash & ROUTEHASHMASK];
again:
for (rt = rh->rt_forw; rt != (struct rt_entry *)rh; rt = rt->rt_forw) {
if (rt->rt_hash != hash)
continue;
if (doinghost) {
if (equal(&rt->rt_dst, dst))
return (rt);
} else {
if (rt->rt_dst.sa_family == af &&
(match != 0) &&
(*match)(&rt->rt_dst, dst))
return (rt);
}
}
if (doinghost) {
doinghost = 0;
hash = h.afh_nethash;
rh = &nethash[hash & ROUTEHASHMASK];
match = afswitch[af].af_netmatch;
goto again;
}
return (0);
}
void
rtadd(dst, gate, metric, ticks, state)
struct sockaddr *dst, *gate;
short metric, ticks;
int state;
{
struct afhash h;
register struct rt_entry *rt;
struct rthash *rh;
int af = dst->sa_family, flags;
u_int hash;
FIXLEN(dst);
FIXLEN(gate);
if (af >= AF_MAX)
return;
(*afswitch[af].af_hash)(dst, &h);
flags = (*afswitch[af].af_ishost)(dst) ? RTF_HOST : 0;
if (flags & RTF_HOST) {
hash = h.afh_hosthash;
rh = &hosthash[hash & ROUTEHASHMASK];
} else {
hash = h.afh_nethash;
rh = &nethash[hash & ROUTEHASHMASK];
}
rt = (struct rt_entry *)malloc(sizeof (*rt));
if (rt == 0)
return;
rt->rt_hash = hash;
rt->rt_dst = *dst;
rt->rt_router = *gate;
rt->rt_metric = metric;
rt->rt_ticks = ticks;
rt->rt_timer = 0;
rt->rt_flags = RTF_UP | flags;
rt->rt_state = state | RTS_CHANGED;
rt->rt_ifp = if_ifwithnet(&rt->rt_router);
rt->rt_clone = NULL;
if (metric)
rt->rt_flags |= RTF_GATEWAY;
insque(rt, rh);
TRACE_ACTION(ADD, rt);
/*
* If the ioctl fails because the gateway is unreachable
* from this host, discard the entry. This should only
* occur because of an incorrect entry in /etc/gateways.
*/
if (install && rtioctl(ADD, &rt->rt_rt) < 0) {
if (errno != EEXIST)
perror("SIOCADDRT");
if (errno == ENETUNREACH) {
TRACE_ACTION(DELETE, rt);
remque(rt);
free((char *)rt);
}
}
}
void
rtadd_clone(ort, dst, gate, metric, ticks, state)
struct rt_entry *ort;
struct sockaddr *dst, *gate;
short metric, ticks;
int state;
{
struct afhash h;
register struct rt_entry *rt;
struct rthash *rh;
int af = dst->sa_family, flags;
u_int hash;
FIXLEN(dst);
FIXLEN(gate);
if (af >= AF_MAX)
return;
(*afswitch[af].af_hash)(dst, &h);
flags = (*afswitch[af].af_ishost)(dst) ? RTF_HOST : 0;
if (flags & RTF_HOST) {
hash = h.afh_hosthash;
rh = &hosthash[hash & ROUTEHASHMASK];
} else {
hash = h.afh_nethash;
rh = &nethash[hash & ROUTEHASHMASK];
}
rt = (struct rt_entry *)malloc(sizeof (*rt));
if (rt == 0)
return;
rt->rt_hash = hash;
rt->rt_dst = *dst;
rt->rt_router = *gate;
rt->rt_metric = metric;
rt->rt_ticks = ticks;
rt->rt_timer = 0;
rt->rt_flags = RTF_UP | flags;
rt->rt_state = state | RTS_CHANGED;
rt->rt_ifp = if_ifwithnet(&rt->rt_router);
rt->rt_clone = NULL;
rt->rt_forw = NULL;
rt->rt_back = NULL;
if (metric)
rt->rt_flags |= RTF_GATEWAY;
while(ort->rt_clone != NULL)
ort = ort->rt_clone;
ort->rt_clone = rt;
TRACE_ACTION(ADD_CLONE, rt);
}
void
rtchange(rt, gate, metric, ticks)
struct rt_entry *rt;
struct sockaddr *gate;
short metric, ticks;
{
int doioctl = 0, metricchanged = 0;
struct rtuentry oldroute;
FIXLEN(gate);
/*
* Handling of clones.
* When the route changed and it had clones, handle it special.
* 1. If the new route is cheaper than the clone(s), free the clones.
* 2. If the new route is the same cost, it may be one of the clones,
* search for it and free it.
* 3. If the new route is more expensive than the clone(s), use the
* values of the clone(s).
*/
if (rt->rt_clone) {
if ((ticks < rt->rt_clone->rt_ticks) ||
((ticks == rt->rt_clone->rt_ticks) &&
(metric < rt->rt_clone->rt_metric))) {
/*
* Free all clones.
*/
struct rt_entry *trt, *nrt;
trt = rt->rt_clone;
rt->rt_clone = NULL;
while(trt) {
nrt = trt->rt_clone;
free((char *)trt);
trt = nrt;
}
} else if ((ticks == rt->rt_clone->rt_ticks) &&
(metric == rt->rt_clone->rt_metric)) {
struct rt_entry *prt, *trt;
prt = rt;
trt = rt->rt_clone;
while(trt) {
if (equal(&trt->rt_router, gate)) {
prt->rt_clone = trt->rt_clone;
free(trt);
trt = prt->rt_clone;
} else {
prt = trt;
trt = trt->rt_clone;
}
}
} else {
/*
* Use the values of the first clone.
* Delete the corresponding clone.
*/
struct rt_entry *trt;
trt = rt->rt_clone;
rt->rt_clone = rt->rt_clone->rt_clone;
metric = trt->rt_metric;
ticks = trt->rt_ticks;
*gate = trt->rt_router;
free((char *)trt);
}
}
if (!equal(&rt->rt_router, gate))
doioctl++;
if ((metric != rt->rt_metric) || (ticks != rt->rt_ticks))
metricchanged++;
if (doioctl || metricchanged) {
TRACE_ACTION(CHANGE FROM, rt);
if (doioctl) {
oldroute = rt->rt_rt;
rt->rt_router = *gate;
}
rt->rt_metric = metric;
rt->rt_ticks = ticks;
if ((rt->rt_state & RTS_INTERFACE) && metric) {
rt->rt_state &= ~RTS_INTERFACE;
if(rt->rt_ifp)
syslog(LOG_ERR,
"changing route from interface %s (timed out)",
rt->rt_ifp->int_name);
else
syslog(LOG_ERR,
"changing route from interface ??? (timed out)");
}
if (metric)
rt->rt_flags |= RTF_GATEWAY;
else
rt->rt_flags &= ~RTF_GATEWAY;
rt->rt_state |= RTS_CHANGED;
TRACE_ACTION(CHANGE TO, rt);
}
if (doioctl && install) {
#ifndef RTM_ADD
if (rtioctl(ADD, &rt->rt_rt) < 0)
syslog(LOG_ERR, "rtioctl ADD dst %s, gw %s: %m",
xns_ntoa(&((struct sockaddr_ns *)&rt->rt_dst)->sns_addr),
xns_ntoa(&((struct sockaddr_ns *)&rt->rt_router)->sns_addr));
if (delete && rtioctl(DELETE, &oldroute) < 0)
perror("rtioctl DELETE");
#else
if (delete == 0) {
if (rtioctl(ADD, &rt->rt_rt) >= 0)
return;
} else {
if (rtioctl(CHANGE, &rt->rt_rt) >= 0)
return;
}
syslog(LOG_ERR, "rtioctl ADD dst %s, gw %s: %m",
ipxdp_ntoa(&((struct sockaddr_ipx *)&rt->rt_dst)->sipx_addr),
ipxdp_ntoa(&((struct sockaddr_ipx *)&rt->rt_router)->sipx_addr));
#endif
}
}
void
rtdelete(rt)
struct rt_entry *rt;
{
struct sockaddr *sa = &(rt->rt_router);
FIXLEN(sa);
sa = &(rt->rt_dst);
FIXLEN(sa);
if (rt->rt_clone) {
/*
* If there is a clone we just do a rt_change to it.
*/
struct rt_entry *trt = rt->rt_clone;
rtchange(rt, &trt->rt_router, trt->rt_metric, trt->rt_ticks);
return;
}
if (rt->rt_state & RTS_INTERFACE) {
if (rt->rt_ifp)
syslog(LOG_ERR,
"deleting route to interface %s (timed out)",
rt->rt_ifp->int_name);
else
syslog(LOG_ERR,
"deleting route to interface ??? (timed out)");
}
TRACE_ACTION(DELETE, rt);
if (install && rtioctl(DELETE, &rt->rt_rt) < 0)
perror("rtioctl DELETE");
remque(rt);
free((char *)rt);
}
void
rtinit(void)
{
register struct rthash *rh;
for (rh = nethash; rh < &nethash[ROUTEHASHSIZ]; rh++)
rh->rt_forw = rh->rt_back = (struct rt_entry *)rh;
for (rh = hosthash; rh < &hosthash[ROUTEHASHSIZ]; rh++)
rh->rt_forw = rh->rt_back = (struct rt_entry *)rh;
}
int seqno;
int
rtioctl(action, ort)
int action;
struct rtuentry *ort;
{
#ifndef RTM_ADD
if (install == 0)
return (errno = 0);
ort->rtu_rtflags = ort->rtu_flags;
switch (action) {
case ADD:
return (ioctl(s, SIOCADDRT, (char *)ort));
case DELETE:
return (ioctl(s, SIOCDELRT, (char *)ort));
default:
return (-1);
}
#else /* RTM_ADD */
struct {
struct rt_msghdr w_rtm;
struct sockaddr w_dst;
struct sockaddr w_gate;
struct sockaddr_ipx w_netmask;
} w;
#define rtm w.w_rtm
bzero((char *)&w, sizeof(w));
rtm.rtm_msglen = sizeof(w);
rtm.rtm_version = RTM_VERSION;
rtm.rtm_type = (action == ADD ? RTM_ADD :
(action == DELETE ? RTM_DELETE : RTM_CHANGE));
rtm.rtm_flags = ort->rtu_flags;
rtm.rtm_seq = ++seqno;
rtm.rtm_addrs = RTA_DST|RTA_GATEWAY;
bcopy((char *)&ort->rtu_dst, (char *)&w.w_dst, sizeof(w.w_dst));
bcopy((char *)&ort->rtu_router, (char *)&w.w_gate, sizeof(w.w_gate));
w.w_gate.sa_family = w.w_dst.sa_family = AF_IPX;
w.w_gate.sa_len = w.w_dst.sa_len = sizeof(w.w_dst);
if (rtm.rtm_flags & RTF_HOST) {
rtm.rtm_msglen -= sizeof(w.w_netmask);
} else {
rtm.rtm_addrs |= RTA_NETMASK;
w.w_netmask = ipx_netmask;
rtm.rtm_msglen -= sizeof(w.w_netmask) - ipx_netmask.sipx_len;
}
errno = 0;
return write(r, (char *)&w, rtm.rtm_msglen);
#endif /* RTM_ADD */
}

234
usr.sbin/IPXrouted/timer.c Normal file
View File

@ -0,0 +1,234 @@
/*
* 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.
*
* $Id: timer.c,v 1.8 1995/10/11 18:57:32 jhay Exp $
*/
#ifndef lint
static char sccsid[] = "@(#)timer.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* Routing Table Management Daemon
*/
#include "defs.h"
#include <unistd.h>
#include <stdlib.h>
int timeval = -TIMER_RATE;
/*
* Timer routine. Performs routing information supply
* duties and manages timers on routing and SAP table entries.
*/
void
timer()
{
register struct rthash *rh;
register struct rt_entry *rt;
struct rthash *base = hosthash;
register struct sap_hash *sh;
register struct sap_entry *sap;
struct sap_hash *sap_base = sap_head;
int doinghost = 1, timetobroadcast, ripbroadcast, sapbroadcast;
timeval += TIMER_RATE;
if (lookforinterfaces && (timeval % CHECK_INTERVAL) == 0)
ifinit();
timetobroadcast = supplier && (timeval % SUPPLY_INTERVAL) == 0;
ripbroadcast = supplier && timetobroadcast &&
(timeval % RIP_INTERVAL) == 0;
sapbroadcast = timetobroadcast && dosap && !ripbroadcast;
again:
for (rh = base; rh < &base[ROUTEHASHSIZ]; rh++) {
rt = rh->rt_forw;
for (; rt != (struct rt_entry *)rh; rt = rt->rt_forw) {
if (rt->rt_clone) {
struct rt_entry *trt, *prt;
/*
* If a clone expire free it and mark the
* main route RTS_CHANGED.
*/
prt = rt;
trt = rt->rt_clone;
while (trt) {
trt->rt_timer += TIMER_RATE;
if (trt->rt_timer >= EXPIRE_TIME) {
prt->rt_clone = trt->rt_clone;
free((char *)trt);
trt = prt->rt_clone;
rt->rt_state |= RTS_CHANGED;
} else {
prt = trt;
trt = prt->rt_clone;
}
}
}
/*
* We don't advance time on a routing entry for
* a passive gateway or that for our only interface.
* The latter is excused because we don't act as
* a routing information supplier and hence would
* time it out. This is fair as if it's down
* we're cut off from the world anyway and it's
* not likely we'll grow any new hardware in
* the mean time.
*/
if (!(rt->rt_state & RTS_PASSIVE) &&
!(rt->rt_state & RTS_INTERFACE))
rt->rt_timer += TIMER_RATE;
if (rt->rt_timer >= EXPIRE_TIME)
rt->rt_metric = HOPCNT_INFINITY;
if (rt->rt_timer >= GARBAGE_TIME) {
rt = rt->rt_back;
/* Perhaps we should send a REQUEST for this route? */
rtdelete(rt->rt_forw);
continue;
}
if (rt->rt_state & RTS_CHANGED) {
rt->rt_state &= ~RTS_CHANGED;
/* don't send extraneous packets */
if (!supplier || ripbroadcast)
continue;
msg->rip_cmd = htons(RIPCMD_RESPONSE);
msg->rip_nets[0].rip_dst =
(satoipx_addr(rt->rt_dst)).x_net;
msg->rip_nets[0].rip_metric =
htons(min(rt->rt_metric+1, HOPCNT_INFINITY));
msg->rip_nets[0].rip_ticks =
htons(rt->rt_ticks + 1);
toall(sndmsg, rt);
}
}
}
if (doinghost) {
doinghost = 0;
base = nethash;
goto again;
}
if (ripbroadcast)
toall(supply, NULL);
/*
* Now do the SAP stuff.
*/
for (sh = sap_base; sh < &sap_base[SAPHASHSIZ]; sh++) {
sap = sh->forw;
for (; sap != (struct sap_entry *)sh; sap = sap->forw) {
if (sap->clone) {
struct sap_entry *tsap, *psap;
/*
* If a clone expire free it and mark the
* main sap entry RTS_CHANGED.
*/
psap = sap;
tsap = sap->clone;
while (tsap) {
tsap->timer += TIMER_RATE;
if (tsap->timer >= EXPIRE_TIME) {
psap->clone = tsap->clone;
free((char *)tsap);
tsap = psap->clone;
sap->state |= RTS_CHANGED;
} else {
psap = tsap;
tsap = psap->clone;
}
}
}
sap->timer += TIMER_RATE;
if (sap->timer >= EXPIRE_TIME)
sap->metric = HOPCNT_INFINITY;
if (sap->timer >= GARBAGE_TIME) {
sap = sap->back;
/* Perhaps we should send a REQUEST for this route? */
sap_delete(sap->forw);
continue;
}
/*
* XXX sap_sndmsg on RTS_CHANGED
*/
}
}
if (sapbroadcast)
sap_supply_toall();
if (ftrace && sapbroadcast)
dumpsaptable(ftrace, sap_head);
alarm(TIMER_RATE);
}
/*
* On hangup, let everyone know we're going away.
*/
void
hup()
{
register struct rthash *rh;
register struct rt_entry *rt;
struct rthash *base = hosthash;
register struct sap_hash *sh;
register struct sap_entry *sap;
int doinghost = 1;
if (supplier) {
again:
for (rh = base; rh < &base[ROUTEHASHSIZ]; rh++) {
rt = rh->rt_forw;
for (; rt != (struct rt_entry *)rh; rt = rt->rt_forw)
rt->rt_metric = HOPCNT_INFINITY;
}
if (doinghost) {
doinghost = 0;
base = nethash;
goto again;
}
toall(supply, NULL);
/*
* Now for SAP.
*/
for (sh = sap_head; sh < &sap_head[SAPHASHSIZ]; sh++) {
sap = sh->forw;
for (; sap != (struct sap_entry *)sh; sap = sap->forw)
sap->sap.hops = htons(HOPCNT_INFINITY);
}
if (dosap)
sap_supply_toall();
}
exit(1);
}

410
usr.sbin/IPXrouted/trace.c Normal file
View File

@ -0,0 +1,410 @@
/*
* 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.
*
* $Id: trace.c,v 1.6 1995/10/11 18:57:33 jhay Exp $
*/
#ifndef lint
static char sccsid[] = "@(#)trace.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
/*
* Routing Table Management Daemon
*/
#define RIPCMDS
#define SAPCMDS
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <time.h>
#include "defs.h"
#define NRECORDS 50 /* size of circular trace buffer */
#ifdef DEBUG
FILE *ftrace = stdout;
int tracing = 1;
#else DEBUG
FILE *ftrace = NULL;
int tracing = 0;
#endif
void dumpif(FILE *fd, struct interface *ifp);
void dumptrace(FILE *fd, char *dir, struct ifdebug *ifd);
void
traceinit(ifp)
register struct interface *ifp;
{
static int iftraceinit();
if (iftraceinit(ifp, &ifp->int_input) &&
iftraceinit(ifp, &ifp->int_output))
return;
tracing = 0;
syslog(LOG_ERR, "traceinit: can't init %s\n", ifp->int_name);
}
static int
iftraceinit(ifp, ifd)
struct interface *ifp;
register struct ifdebug *ifd;
{
register struct iftrace *t;
ifd->ifd_records =
(struct iftrace *)malloc(NRECORDS * sizeof (struct iftrace));
if (ifd->ifd_records == 0)
return (0);
ifd->ifd_front = ifd->ifd_records;
ifd->ifd_count = 0;
for (t = ifd->ifd_records; t < ifd->ifd_records + NRECORDS; t++) {
t->ift_size = 0;
t->ift_packet = 0;
}
ifd->ifd_if = ifp;
return (1);
}
void
traceon(file)
char *file;
{
if (ftrace != NULL)
return;
ftrace = fopen(file, "a");
if (ftrace == NULL)
return;
dup2(fileno(ftrace), 1);
dup2(fileno(ftrace), 2);
tracing = 1;
}
void
traceoff(void)
{
if (!tracing)
return;
if (ftrace != NULL)
fclose(ftrace);
ftrace = NULL;
tracing = 0;
}
void
trace(ifd, who, p, len, m)
register struct ifdebug *ifd;
struct sockaddr *who;
char *p;
int len, m;
{
register struct iftrace *t;
if (ifd->ifd_records == 0)
return;
t = ifd->ifd_front++;
if (ifd->ifd_front >= ifd->ifd_records + NRECORDS)
ifd->ifd_front = ifd->ifd_records;
if (ifd->ifd_count < NRECORDS)
ifd->ifd_count++;
if (t->ift_size > 0 && t->ift_packet)
free(t->ift_packet);
t->ift_packet = 0;
t->ift_stamp = time(0);
t->ift_who = *who;
if (len > 0) {
t->ift_packet = malloc(len);
if (t->ift_packet)
bcopy(p, t->ift_packet, len);
else
len = 0;
}
t->ift_size = len;
t->ift_metric = m;
}
void
traceaction(fd, action, rt)
FILE *fd;
char *action;
struct rt_entry *rt;
{
struct sockaddr_ipx *dst, *gate;
static struct bits {
int t_bits;
char *t_name;
} flagbits[] = {
{ RTF_UP, "UP" },
{ RTF_GATEWAY, "GATEWAY" },
{ RTF_HOST, "HOST" },
{ 0 }
}, statebits[] = {
{ RTS_PASSIVE, "PASSIVE" },
{ RTS_REMOTE, "REMOTE" },
{ RTS_INTERFACE,"INTERFACE" },
{ RTS_CHANGED, "CHANGED" },
{ 0 }
};
register struct bits *p;
register int first;
char *cp;
if (fd == NULL)
return;
fprintf(fd, "%s ", action);
dst = (struct sockaddr_ipx *)&rt->rt_dst;
gate = (struct sockaddr_ipx *)&rt->rt_router;
fprintf(fd, "dst %s, ", ipxdp_ntoa(&dst->sipx_addr));
fprintf(fd, "router %s, metric %d, ticks %d, flags",
ipxdp_ntoa(&gate->sipx_addr), rt->rt_metric, rt->rt_ticks);
cp = " %s";
for (first = 1, p = flagbits; p->t_bits > 0; p++) {
if ((rt->rt_flags & p->t_bits) == 0)
continue;
fprintf(fd, cp, p->t_name);
if (first) {
cp = "|%s";
first = 0;
}
}
fprintf(fd, " state");
cp = " %s";
for (first = 1, p = statebits; p->t_bits > 0; p++) {
if ((rt->rt_state & p->t_bits) == 0)
continue;
fprintf(fd, cp, p->t_name);
if (first) {
cp = "|%s";
first = 0;
}
}
putc('\n', fd);
if (!tracepackets && (rt->rt_state & RTS_PASSIVE) == 0 && rt->rt_ifp)
dumpif(fd, rt->rt_ifp);
fflush(fd);
}
void
dumpif(fd, ifp)
register struct interface *ifp;
FILE *fd;
{
if (ifp->int_input.ifd_count || ifp->int_output.ifd_count) {
fprintf(fd, "*** Packet history for interface %s ***\n",
ifp->int_name);
dumptrace(fd, "to", &ifp->int_output);
dumptrace(fd, "from", &ifp->int_input);
fprintf(fd, "*** end packet history ***\n");
}
}
void
dumptrace(fd, dir, ifd)
FILE *fd;
char *dir;
register struct ifdebug *ifd;
{
register struct iftrace *t;
char *cp = !strcmp(dir, "to") ? "Output" : "Input";
if (ifd->ifd_front == ifd->ifd_records &&
ifd->ifd_front->ift_size == 0) {
fprintf(fd, "%s: no packets.\n", cp);
return;
}
fprintf(fd, "%s trace:\n", cp);
t = ifd->ifd_front - ifd->ifd_count;
if (t < ifd->ifd_records)
t += NRECORDS;
for ( ; ifd->ifd_count; ifd->ifd_count--, t++) {
if (t >= ifd->ifd_records + NRECORDS)
t = ifd->ifd_records;
if (t->ift_size == 0)
continue;
fprintf(fd, "%.24s: metric=%d\n", ctime(&t->ift_stamp),
t->ift_metric);
dumppacket(fd, dir, &t->ift_who, t->ift_packet, t->ift_size);
}
}
void
dumppacket(fd, dir, source, cp, size)
FILE *fd;
char *dir;
struct sockaddr *source;
char *cp;
register int size;
{
register struct rip *msg = (struct rip *)cp;
register struct netinfo *n;
struct sockaddr_ipx *who = (struct sockaddr_ipx *)source;
if (msg->rip_cmd && ntohs(msg->rip_cmd) < RIPCMD_MAX)
fprintf(fd, "%s %s %s#%x", ripcmds[ntohs(msg->rip_cmd)],
dir, ipxdp_ntoa(&who->sipx_addr),
ntohs(who->sipx_addr.x_port));
else {
fprintf(fd, "Bad cmd 0x%x %s %s#%x\n", ntohs(msg->rip_cmd),
dir, ipxdp_ntoa(&who->sipx_addr),
ntohs(who->sipx_addr.x_port));
fprintf(fd, "size=%d cp=%x packet=%x\n", size,
(u_int)cp, (u_int)packet);
return;
}
switch (ntohs(msg->rip_cmd)) {
case RIPCMD_REQUEST:
case RIPCMD_RESPONSE:
fprintf(fd, ":\n");
size -= sizeof (u_short);
n = msg->rip_nets;
for (; size > 0; n++, size -= sizeof (struct netinfo)) {
if (size < sizeof (struct netinfo))
break;
fprintf(fd, "\tnet %s metric %d ticks %d\n",
ipxdp_nettoa(n->rip_dst),
ntohs(n->rip_metric),
ntohs(n->rip_ticks));
}
break;
}
}
void
dumpsappacket(fd, dir, source, cp, size)
FILE *fd;
char *dir;
struct sockaddr *source;
char *cp;
register int size;
{
register struct sap_packet *msg = (struct sap_packet *)cp;
register struct sap_info *n;
struct sockaddr_ipx *who = (struct sockaddr_ipx *)source;
if (msg->sap_cmd && ntohs(msg->sap_cmd) < SAPCMD_MAX)
fprintf(fd, "%s %s %s#%x", sapcmds[ntohs(msg->sap_cmd)],
dir, ipxdp_ntoa(&who->sipx_addr),
ntohs(who->sipx_addr.x_port));
else {
fprintf(fd, "Bad cmd 0x%x %s %s#%x\n", ntohs(msg->sap_cmd),
dir, ipxdp_ntoa(&who->sipx_addr),
ntohs(who->sipx_addr.x_port));
fprintf(fd, "size=%d cp=%x packet=%x\n", size,
(u_int)cp, (u_int)packet);
return;
}
switch (ntohs(msg->sap_cmd)) {
case SAP_REQ:
case SAP_RESP:
case SAP_REQ_NEAR:
case SAP_RESP_NEAR:
fprintf(fd, ":\n");
size -= sizeof (u_short);
n = msg->sap;
for (; size > 0; n++, size -= sizeof (struct sap_info)) {
if (size < sizeof (struct sap_info))
break;
fprintf(fd, " service %04X %-20.20s "
"addr %s.%04X metric %d\n",
ntohs(n->ServType),
n->ServName,
ipxdp_ntoa(&n->ipx),
ntohs(n->ipx.x_port),
ntohs(n->hops));
}
break;
}
}
void
dumpsaptable(fd, sh)
FILE *fd;
struct sap_hash *sh;
{
register struct sap_entry *sap;
struct sap_hash *hash;
int x = 0;
fprintf(fd, "------- SAP table dump. -------\n");
for (hash = sh; hash < &sh[SAPHASHSIZ]; hash++, x++) {
fprintf(fd, "HASH %d\n", x);
sap = hash->forw;
for (; sap != (struct sap_entry *)hash; sap = sap->forw) {
fprintf(fd, " service %04X %-20.20s "
"addr %s.%04X %c metric %d\n",
ntohs(sap->sap.ServType),
sap->sap.ServName,
ipxdp_ntoa(&sap->sap.ipx),
ntohs(sap->sap.ipx.x_port),
(sap->clone ? 'C' : ' '),
ntohs(sap->sap.hops));
}
}
fprintf(fd, "\n");
}
union ipx_net_u net;
char *
ipxdp_nettoa(val)
union ipx_net val;
{
static char buf[100];
net.net_e = val;
(void)sprintf(buf, "%lx", ntohl(net.long_e));
return (buf);
}
char *
ipxdp_ntoa(addr)
struct ipx_addr *addr;
{
static char buf[100];
(void)sprintf(buf, "%s#%x:%x:%x:%x:%x:%x",
ipxdp_nettoa(addr->x_net),
addr->x_host.c_host[0], addr->x_host.c_host[1],
addr->x_host.c_host[2], addr->x_host.c_host[3],
addr->x_host.c_host[4], addr->x_host.c_host[5]);
return(buf);
}

123
usr.sbin/IPXrouted/trace.h Normal file
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@ -0,0 +1,123 @@
/*
* Copyright (c) 1983, 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.
*
* @(#)trace.h 8.1 (Berkeley) 6/5/93
*
* $Id: trace.h,v 1.4 1995/10/11 18:57:34 jhay Exp $
*/
/*
* IPX Routing Information Protocol.
*/
/*
* Trace record format.
*/
struct iftrace {
time_t ift_stamp; /* time stamp */
struct sockaddr ift_who; /* from/to */
char *ift_packet; /* pointer to packet */
short ift_size; /* size of packet */
short ift_metric; /* metric */
};
/*
* Per interface packet tracing buffers. An incoming and
* outgoing circular buffer of packets is maintained, per
* interface, for debugging. Buffers are dumped whenever
* an interface is marked down.
*/
struct ifdebug {
struct iftrace *ifd_records; /* array of trace records */
struct iftrace *ifd_front; /* next empty trace record */
int ifd_count; /* number of unprinted records */
struct interface *ifd_if; /* for locating stuff */
};
/*
* Packet tracing stuff.
*/
int tracepackets; /* watch packets as they go by */
int tracing; /* on/off */
FILE *ftrace; /* output trace file */
#define TRACE_ACTION(action, route) { \
if (tracing) \
traceaction(ftrace, "action", route); \
}
#define TRACE_INPUT(ifp, src, size) { \
if (tracing) { \
ifp = if_iflookup(src); \
if (ifp) \
trace(&ifp->int_input, src, &packet[sizeof(struct ipxdp)], size, \
ntohl(ifp->int_metric)); \
} \
if (tracepackets && ftrace) \
dumppacket(ftrace, "from", src, &packet[sizeof(struct ipxdp)], size); \
}
#define TRACE_OUTPUT(ifp, dst, size) { \
if (tracing) { \
ifp = if_iflookup(dst); \
if (ifp) \
trace(&ifp->int_output, dst, &packet[sizeof(struct ipxdp)], size, ifp->int_metric); \
} \
if (tracepackets && ftrace) \
dumppacket(ftrace, "to", dst, &packet[sizeof(struct ipxdp)], size); \
}
#define TRACE_SAP_OUTPUT(ifp, dst, size) { \
if (tracing) { \
ifp = if_iflookup(dst); \
if (ifp) \
trace(&ifp->int_output, dst, &packet[sizeof(struct ipxdp)], size, ifp->int_metric); \
} \
if (tracepackets && ftrace) \
dumpsappacket(ftrace, "to", dst, &packet[sizeof(struct ipxdp)], size); \
}
void traceinit(struct interface *);
void traceon(char *file);
void traceoff(void);
void traceaction(FILE *, char *, struct rt_entry *);
void trace(struct ifdebug *, struct sockaddr *, char *, int, int);
void dumppacket(FILE *, char *, struct sockaddr *, char *, int);
void dumpsappacket(FILE *, char *, struct sockaddr *, char *, int);
void dumpsaptable(FILE *fd, struct sap_hash *sh);
char *ipxdp_nettoa(union ipx_net);
char *ipxdp_ntoa(struct ipx_addr *);