f7d7038aa4
Avoid implicit function calls by adding the proper include files. Use const char copyright. Fix some fprint formatting. In the manual page: Use the .Pa macro for filenames and locations. Kill hard setence breaks. Make use of the .Tn and .Dq macros. Add some to text to the otherwise blank HISTORY section (taken from CVS).
283 lines
8.1 KiB
C
283 lines
8.1 KiB
C
/*
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* Copyright (c) 1985, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Copyright (c) 1995 John Hay. All rights reserved.
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*
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* This file includes significant work done at Cornell University by
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* Bill Nesheim. That work included by permission.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef lint
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static const char sccsid[] = "@(#)startup.c 8.1 (Berkeley) 6/5/93";
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#endif /* not lint */
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/*
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* Routing Table Management Daemon
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*/
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#include "defs.h"
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <errno.h>
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#include <nlist.h>
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#include <search.h>
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#include <stdlib.h>
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struct interface *ifnet;
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int lookforinterfaces = 1;
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int performnlist = 1;
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int gateway = 0;
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int externalinterfaces = 0; /* # of remote and local interfaces */
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void
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quit(s)
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char *s;
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{
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int sverrno = errno;
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(void) fprintf(stderr, "IPXroute: ");
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if (s)
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(void) fprintf(stderr, "%s: ", s);
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(void) fprintf(stderr, "%s\n", strerror(sverrno));
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exit(1);
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/* NOTREACHED */
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}
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struct rt_addrinfo info;
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/* Sleazy use of local variables throughout file, warning!!!! */
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#define netmask info.rti_info[RTAX_NETMASK]
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#define ifaaddr info.rti_info[RTAX_IFA]
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#define brdaddr info.rti_info[RTAX_BRD]
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#define ROUNDUP(a) \
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((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
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#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
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void
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rt_xaddrs(cp, cplim, rtinfo)
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register caddr_t cp, cplim;
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register struct rt_addrinfo *rtinfo;
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{
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register struct sockaddr *sa;
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register int i;
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bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
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for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
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if ((rtinfo->rti_addrs & (1 << i)) == 0)
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continue;
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rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
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ADVANCE(cp, sa);
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}
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}
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/*
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* Find the network interfaces which have configured themselves.
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* If the interface is present but not yet up (for example an
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* ARPANET IMP), set the lookforinterfaces flag so we'll
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* come back later and look again.
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*/
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void
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ifinit(void)
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{
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struct interface ifs, *ifp;
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size_t needed;
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int mib[6], no_ipxaddr = 0, flags = 0;
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char *buf, *cplim, *cp;
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register struct if_msghdr *ifm;
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register struct ifa_msghdr *ifam;
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struct sockaddr_dl *sdl = 0;
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mib[0] = CTL_NET;
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mib[1] = PF_ROUTE;
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mib[2] = 0;
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mib[3] = AF_IPX;
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mib[4] = NET_RT_IFLIST;
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mib[5] = 0;
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if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
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quit("route-sysctl-estimate");
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if ((buf = malloc(needed)) == NULL)
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quit("malloc");
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if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
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lookforinterfaces = 0;
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cplim = buf + needed;
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for (cp = buf; cp < cplim; cp += ifm->ifm_msglen) {
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ifm = (struct if_msghdr *)cp;
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if (ifm->ifm_type == RTM_IFINFO) {
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bzero(&ifs, sizeof(ifs));
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ifs.int_flags = flags = ifm->ifm_flags | IFF_INTERFACE;
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if ((flags & IFF_UP) == 0 || no_ipxaddr)
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lookforinterfaces = 1;
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sdl = (struct sockaddr_dl *) (ifm + 1);
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sdl->sdl_data[sdl->sdl_nlen] = 0;
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no_ipxaddr = 1;
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continue;
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}
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if (ifm->ifm_type != RTM_NEWADDR)
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quit("ifinit: out of sync");
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if ((flags & IFF_UP) == 0)
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continue;
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ifam = (struct ifa_msghdr *)ifm;
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info.rti_addrs = ifam->ifam_addrs;
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rt_xaddrs((char *)(ifam + 1), cp + ifam->ifam_msglen, &info);
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if (ifaaddr == 0) {
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syslog(LOG_ERR, "%s: (get addr)", sdl->sdl_data);
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continue;
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}
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ifs.int_addr = *ifaaddr;
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if (ifs.int_addr.sa_family != AF_IPX)
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continue;
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no_ipxaddr = 0;
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if (ifs.int_flags & IFF_POINTOPOINT) {
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if (brdaddr == 0) {
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syslog(LOG_ERR, "%s: (get dstaddr)",
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sdl->sdl_data);
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continue;
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}
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if (brdaddr->sa_family == AF_UNSPEC) {
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lookforinterfaces = 1;
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continue;
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}
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ifs.int_dstaddr = *brdaddr;
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}
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if (ifs.int_flags & IFF_BROADCAST) {
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if (brdaddr == 0) {
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syslog(LOG_ERR, "%s: (get broadaddr)",
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sdl->sdl_data);
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continue;
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}
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ifs.int_dstaddr = *brdaddr;
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}
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if (ifs.int_flags & IFF_LOOPBACK) {
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ifs.int_dstaddr = ifs.int_addr;
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}
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/*
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* already known to us?
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* what makes a POINTOPOINT if unique is its dst addr,
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* NOT its source address
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*/
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if ( ((ifs.int_flags & IFF_POINTOPOINT) &&
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if_ifwithdstaddr(&ifs.int_dstaddr)) ||
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( ((ifs.int_flags & IFF_POINTOPOINT) == 0) &&
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if_ifwithaddr(&ifs.int_addr)))
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continue;
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ifp = (struct interface *)
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malloc(sdl->sdl_nlen + 1 + sizeof(ifs));
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if (ifp == 0) {
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syslog(LOG_ERR, "IPXrouted: out of memory\n");
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lookforinterfaces = 1;
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break;
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}
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*ifp = ifs;
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/*
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* Count the # of directly connected networks
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* and point to point links which aren't looped
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* back to ourself. This is used below to
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* decide if we should be a routing ``supplier''.
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*/
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if ((ifs.int_flags & IFF_POINTOPOINT) == 0 ||
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if_ifwithaddr(&ifs.int_dstaddr) == 0)
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externalinterfaces++;
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/*
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* If we have a point-to-point link, we want to act
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* as a supplier even if it's our only interface,
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* as that's the only way our peer on the other end
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* can tell that the link is up.
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*/
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if ((ifs.int_flags & IFF_POINTOPOINT) && supplier < 0)
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supplier = 1;
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ifp->int_name = (char *)(ifp + 1);
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strcpy(ifp->int_name, sdl->sdl_data);
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ifp->int_metric = ifam->ifam_metric;
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ifp->int_next = ifnet;
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ifnet = ifp;
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traceinit(ifp);
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addrouteforif(ifp);
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}
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if (externalinterfaces > 1 && supplier < 0)
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supplier = 1;
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free(buf);
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}
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void
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addrouteforif(ifp)
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struct interface *ifp;
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{
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struct sockaddr_ipx net;
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struct sockaddr *dst;
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struct rt_entry *rt;
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if (ifp->int_flags & IFF_POINTOPOINT) {
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int (*match)();
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register struct interface *ifp2 = ifnet;
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dst = &ifp->int_dstaddr;
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/* Search for interfaces with the same net */
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ifp->int_sq.n = ifp->int_sq.p = &(ifp->int_sq);
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match = afswitch[dst->sa_family].af_netmatch;
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if (match)
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for (ifp2 = ifnet; ifp2; ifp2 =ifp2->int_next) {
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if ((ifp->int_flags & IFF_POINTOPOINT) == 0)
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continue;
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if ((*match)(&ifp2->int_dstaddr,&ifp->int_dstaddr)) {
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insque(&ifp2->int_sq,&ifp->int_sq);
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break;
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}
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}
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} else {
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bzero(&net, sizeof(net));
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net.sipx_family = AF_IPX;
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net.sipx_len = sizeof (net);
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net.sipx_addr.x_net = satoipx_addr(ifp->int_broadaddr).x_net;
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dst = (struct sockaddr *)&net;
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}
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rt = rtlookup(dst);
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if (rt)
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rtdelete(rt);
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if (tracing)
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fprintf(stderr, "Adding route to interface %s\n", ifp->int_name);
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if (ifp->int_transitions++ > 0)
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syslog(LOG_ERR, "re-installing interface %s", ifp->int_name);
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rtadd(dst, &ifp->int_addr, ifp->int_metric, 0,
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ifp->int_flags & (IFF_INTERFACE|IFF_PASSIVE|IFF_REMOTE));
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}
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