808a36ef65
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
282 lines
8.1 KiB
C
282 lines
8.1 KiB
C
/*
|
|
* Copyright (c) 1985, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Copyright (c) 1995 John Hay. All rights reserved.
|
|
*
|
|
* This file includes significant work done at Cornell University by
|
|
* Bill Nesheim. That work included by permission.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef lint
|
|
static 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 <sys/time.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 */
|
|
|
|
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_ipx net;
|
|
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 {
|
|
bzero(&net, sizeof(net));
|
|
net.sipx_family = AF_IPX;
|
|
net.sipx_len = sizeof (net);
|
|
net.sipx_addr.x_net = satoipx_addr(ifp->int_broadaddr).x_net;
|
|
dst = (struct sockaddr *)&net;
|
|
}
|
|
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));
|
|
}
|
|
|