94fafad064
IPv6 scoped addr display is not yet supported by ifconfig and route. Now almost of IPv6 apps support it, so its support in ifconfig and route is important to keep consisetncy, and to avoid user confusion. Approved by: jkh
1662 lines
37 KiB
C
1662 lines
37 KiB
C
/*
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* Copyright (c) 1983, 1989, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <net/if_dl.h>
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#include <netinet/in.h>
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#include <netatalk/at.h>
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#ifdef NS
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#include <netns/ns.h>
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#endif
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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/* wrapper for KAME-special getnameinfo() */
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#ifndef NI_WITHSCOPEID
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#define NI_WITHSCOPEID 0
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#endif
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struct keytab {
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char *kt_cp;
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int kt_i;
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} keywords[] = {
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#include "keywords.h"
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{0, 0}
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};
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struct ortentry route;
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union sockunion {
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struct sockaddr sa;
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struct sockaddr_in sin;
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#ifdef INET6
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struct sockaddr_in6 sin6;
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#endif
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struct sockaddr_at sat;
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#ifdef NS
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struct sockaddr_ns sns;
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#endif
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struct sockaddr_dl sdl;
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} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
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typedef union sockunion *sup;
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int pid, rtm_addrs, uid;
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int s;
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int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword();
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int iflag, verbose, aflen = sizeof (struct sockaddr_in);
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int locking, lockrest, debugonly;
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struct rt_metrics rt_metrics;
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u_long rtm_inits;
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int atalk_aton __P((const char *, struct at_addr *));
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char *atalk_ntoa __P((struct at_addr));
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#ifdef INET6
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char *inet6_ntoa __P((struct sockaddr *sa));
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#endif
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char *routename(), *netname();
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void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf();
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void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr();
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int getaddr(), rtmsg(), x25_makemask();
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int prefixlen();
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extern char *iso_ntoa();
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void usage __P((const char *)) __dead2;
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#ifdef INET6
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char name_buf[MAXHOSTNAMELEN * 2 + 1]; /*for getnameinfo()*/
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#endif
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void
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usage(cp)
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const char *cp;
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{
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if (cp)
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warnx("bad keyword: %s", cp);
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(void) fprintf(stderr,
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"usage: route [-dnqtv] command [[modifiers] args]\n");
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exit(EX_USAGE);
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/* NOTREACHED */
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}
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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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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int ch;
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if (argc < 2)
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usage((char *)NULL);
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while ((ch = getopt(argc, argv, "nqdtv")) != -1)
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switch(ch) {
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case 'n':
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nflag = 1;
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break;
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case 'q':
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qflag = 1;
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break;
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case 'v':
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verbose = 1;
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break;
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case 't':
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tflag = 1;
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break;
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case 'd':
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debugonly = 1;
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break;
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case '?':
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default:
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usage((char *)NULL);
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}
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argc -= optind;
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argv += optind;
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pid = getpid();
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uid = getuid();
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if (tflag)
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s = open("/dev/null", O_WRONLY, 0);
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else
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s = socket(PF_ROUTE, SOCK_RAW, 0);
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if (s < 0)
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err(EX_OSERR, "socket");
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setuid(uid);
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if (*argv)
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switch (keyword(*argv)) {
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case K_GET:
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uid = 0;
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/* FALLTHROUGH */
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case K_CHANGE:
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case K_ADD:
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case K_DELETE:
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newroute(argc, argv);
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exit(0);
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/* NOTREACHED */
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case K_MONITOR:
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monitor();
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/* NOTREACHED */
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case K_FLUSH:
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flushroutes(argc, argv);
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exit(0);
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/* NOTREACHED */
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}
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usage(*argv);
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/* NOTREACHED */
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}
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/*
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* Purge all entries in the routing tables not
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* associated with network interfaces.
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*/
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void
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flushroutes(argc, argv)
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int argc;
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char *argv[];
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{
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size_t needed;
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int mib[6], rlen, seqno;
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char *buf, *next, *lim;
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register struct rt_msghdr *rtm;
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if (uid) {
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errx(EX_NOPERM, "must be root to alter routing table");
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}
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shutdown(s, 0); /* Don't want to read back our messages */
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if (argc > 1) {
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argv++;
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if (argc == 2 && **argv == '-')
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switch (keyword(*argv + 1)) {
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case K_INET:
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af = AF_INET;
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break;
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#ifdef INET6
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case K_INET6:
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af = AF_INET6;
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break;
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#endif
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case K_ATALK:
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af = AF_APPLETALK;
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break;
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#ifdef NS
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case K_XNS:
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af = AF_NS;
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break;
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#endif
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case K_LINK:
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af = AF_LINK;
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break;
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default:
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goto bad;
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} else
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bad: usage(*argv);
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}
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mib[0] = CTL_NET;
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mib[1] = PF_ROUTE;
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mib[2] = 0; /* protocol */
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mib[3] = 0; /* wildcard address family */
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mib[4] = NET_RT_DUMP;
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mib[5] = 0; /* no flags */
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if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
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err(EX_OSERR, "route-sysctl-estimate");
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if ((buf = malloc(needed)) == NULL)
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errx(EX_OSERR, "malloc failed");
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if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
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err(EX_OSERR, "route-sysctl-get");
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lim = buf + needed;
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if (verbose)
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(void) printf("Examining routing table from sysctl\n");
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seqno = 0; /* ??? */
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for (next = buf; next < lim; next += rtm->rtm_msglen) {
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rtm = (struct rt_msghdr *)next;
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if (verbose)
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print_rtmsg(rtm, rtm->rtm_msglen);
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if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
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continue;
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if (af) {
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struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
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if (sa->sa_family != af)
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continue;
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}
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if (debugonly)
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continue;
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rtm->rtm_type = RTM_DELETE;
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rtm->rtm_seq = seqno;
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rlen = write(s, next, rtm->rtm_msglen);
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if (rlen < (int)rtm->rtm_msglen) {
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warn("write to routing socket");
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(void) printf("got only %d for rlen\n", rlen);
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break;
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}
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seqno++;
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if (qflag)
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continue;
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if (verbose)
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print_rtmsg(rtm, rlen);
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else {
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struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
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(void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
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routename(sa) : netname(sa));
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sa = (struct sockaddr *)(sa->sa_len + (char *)sa);
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(void) printf("%-20.20s ", routename(sa));
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(void) printf("done\n");
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}
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}
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}
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char *
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routename(sa)
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struct sockaddr *sa;
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{
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register char *cp;
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static char line[MAXHOSTNAMELEN + 1];
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struct hostent *hp;
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static char domain[MAXHOSTNAMELEN + 1];
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static int first = 1;
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#ifdef NS
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char *ns_print();
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#endif
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if (first) {
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first = 0;
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if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
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(cp = index(domain, '.'))) {
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domain[MAXHOSTNAMELEN] = '\0';
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(void) strcpy(domain, cp + 1);
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} else
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domain[0] = 0;
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}
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if (sa->sa_len == 0)
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strcpy(line, "default");
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else switch (sa->sa_family) {
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case AF_INET:
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{ struct in_addr in;
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in = ((struct sockaddr_in *)sa)->sin_addr;
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cp = 0;
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if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
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cp = "default";
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if (cp == 0 && !nflag) {
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hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
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AF_INET);
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if (hp) {
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if ((cp = index(hp->h_name, '.')) &&
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!strcmp(cp + 1, domain))
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*cp = 0;
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cp = hp->h_name;
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}
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}
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if (cp) {
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strncpy(line, cp, sizeof(line) - 1);
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line[sizeof(line) - 1] = '\0';
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} else {
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/* XXX - why not inet_ntoa()? */
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#define C(x) (unsigned)((x) & 0xff)
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in.s_addr = ntohl(in.s_addr);
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(void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
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C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
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}
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break;
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}
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#ifdef INET6
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case AF_INET6:
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(void) snprintf(line, sizeof(line), "%s", inet6_ntoa(sa));
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break;
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#endif
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case AF_APPLETALK:
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(void) snprintf(line, sizeof(line), "atalk %s",
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atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
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break;
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#ifdef NS
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case AF_NS:
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return (ns_print((struct sockaddr_ns *)sa));
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#endif
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case AF_LINK:
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return (link_ntoa((struct sockaddr_dl *)sa));
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default:
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{ u_short *s = (u_short *)sa;
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u_short *slim = s + ((sa->sa_len + 1) >> 1);
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char *cp = line + sprintf(line, "(%d)", sa->sa_family);
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char *cpe = line + sizeof(line);
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while (++s < slim && cp < cpe) /* start with sa->sa_data */
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cp += snprintf(cp, cpe - cp, " %x", *s);
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break;
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}
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}
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return (line);
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}
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|
|
/*
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* Return the name of the network whose address is given.
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* The address is assumed to be that of a net or subnet, not a host.
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*/
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char *
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netname(sa)
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struct sockaddr *sa;
|
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{
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char *cp = 0;
|
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static char line[MAXHOSTNAMELEN + 1];
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struct netent *np = 0;
|
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u_long net, mask;
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register u_long i;
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int subnetshift;
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#ifdef NS
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char *ns_print();
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#endif
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|
|
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switch (sa->sa_family) {
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|
|
case AF_INET:
|
|
{ struct in_addr in;
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in = ((struct sockaddr_in *)sa)->sin_addr;
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|
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i = in.s_addr = ntohl(in.s_addr);
|
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if (in.s_addr == 0)
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cp = "default";
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else if (!nflag) {
|
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if (IN_CLASSA(i)) {
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mask = IN_CLASSA_NET;
|
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subnetshift = 8;
|
|
} else if (IN_CLASSB(i)) {
|
|
mask = IN_CLASSB_NET;
|
|
subnetshift = 8;
|
|
} else {
|
|
mask = IN_CLASSC_NET;
|
|
subnetshift = 4;
|
|
}
|
|
/*
|
|
* If there are more bits than the standard mask
|
|
* would suggest, subnets must be in use.
|
|
* Guess at the subnet mask, assuming reasonable
|
|
* width subnet fields.
|
|
*/
|
|
while (in.s_addr &~ mask)
|
|
mask = (long)mask >> subnetshift;
|
|
net = in.s_addr & mask;
|
|
while ((mask & 1) == 0)
|
|
mask >>= 1, net >>= 1;
|
|
np = getnetbyaddr(net, AF_INET);
|
|
if (np)
|
|
cp = np->n_name;
|
|
}
|
|
if (cp)
|
|
strncpy(line, cp, sizeof(line));
|
|
else if ((in.s_addr & 0xffffff) == 0)
|
|
(void) sprintf(line, "%u", C(in.s_addr >> 24));
|
|
else if ((in.s_addr & 0xffff) == 0)
|
|
(void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
|
|
C(in.s_addr >> 16));
|
|
else if ((in.s_addr & 0xff) == 0)
|
|
(void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
|
|
C(in.s_addr >> 16), C(in.s_addr >> 8));
|
|
else
|
|
(void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
|
|
C(in.s_addr >> 16), C(in.s_addr >> 8),
|
|
C(in.s_addr));
|
|
break;
|
|
}
|
|
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
(void) snprintf(line, sizeof(line), "%s", inet6_ntoa(sa));
|
|
break;
|
|
#endif
|
|
|
|
case AF_APPLETALK:
|
|
(void) snprintf(line, sizeof(line), "atalk %s",
|
|
atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
|
|
break;
|
|
|
|
#ifdef NS
|
|
case AF_NS:
|
|
return (ns_print((struct sockaddr_ns *)sa));
|
|
break;
|
|
#endif
|
|
|
|
case AF_LINK:
|
|
return (link_ntoa((struct sockaddr_dl *)sa));
|
|
|
|
|
|
default:
|
|
{ u_short *s = (u_short *)sa->sa_data;
|
|
u_short *slim = s + ((sa->sa_len + 1)>>1);
|
|
char *cp = line + sprintf(line, "af %d:", sa->sa_family);
|
|
char *cpe = line + sizeof(line);
|
|
|
|
while (s < slim && cp < cpe)
|
|
cp += snprintf(cp, cpe - cp, " %x", *s++);
|
|
break;
|
|
}
|
|
}
|
|
return (line);
|
|
}
|
|
|
|
void
|
|
set_metric(value, key)
|
|
char *value;
|
|
int key;
|
|
{
|
|
int flag = 0;
|
|
u_long noval, *valp = &noval;
|
|
|
|
switch (key) {
|
|
#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
|
|
caseof(K_MTU, RTV_MTU, rmx_mtu);
|
|
caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
|
|
caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
|
|
caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
|
|
caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
|
|
caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
|
|
caseof(K_RTT, RTV_RTT, rmx_rtt);
|
|
caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
|
|
}
|
|
rtm_inits |= flag;
|
|
if (lockrest || locking)
|
|
rt_metrics.rmx_locks |= flag;
|
|
if (locking)
|
|
locking = 0;
|
|
*valp = atoi(value);
|
|
}
|
|
|
|
void
|
|
newroute(argc, argv)
|
|
int argc;
|
|
register char **argv;
|
|
{
|
|
char *cmd, *dest = "", *gateway = "", *err;
|
|
int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC;
|
|
int key;
|
|
struct hostent *hp = 0;
|
|
|
|
if (uid) {
|
|
errx(EX_NOPERM, "must be root to alter routing table");
|
|
}
|
|
cmd = argv[0];
|
|
if (*cmd != 'g')
|
|
shutdown(s, 0); /* Don't want to read back our messages */
|
|
while (--argc > 0) {
|
|
if (**(++argv)== '-') {
|
|
switch (key = keyword(1 + *argv)) {
|
|
case K_LINK:
|
|
af = AF_LINK;
|
|
aflen = sizeof(struct sockaddr_dl);
|
|
break;
|
|
case K_INET:
|
|
af = AF_INET;
|
|
aflen = sizeof(struct sockaddr_in);
|
|
break;
|
|
#ifdef INET6
|
|
case K_INET6:
|
|
af = AF_INET6;
|
|
aflen = sizeof(struct sockaddr_in6);
|
|
break;
|
|
#endif
|
|
case K_ATALK:
|
|
af = AF_APPLETALK;
|
|
aflen = sizeof(struct sockaddr_at);
|
|
break;
|
|
case K_SA:
|
|
af = PF_ROUTE;
|
|
aflen = sizeof(union sockunion);
|
|
break;
|
|
#ifdef NS
|
|
case K_XNS:
|
|
af = AF_NS;
|
|
aflen = sizeof(struct sockaddr_ns);
|
|
break;
|
|
#endif
|
|
case K_IFACE:
|
|
case K_INTERFACE:
|
|
iflag++;
|
|
break;
|
|
case K_NOSTATIC:
|
|
flags &= ~RTF_STATIC;
|
|
break;
|
|
case K_LLINFO:
|
|
flags |= RTF_LLINFO;
|
|
break;
|
|
case K_LOCK:
|
|
locking = 1;
|
|
break;
|
|
case K_LOCKREST:
|
|
lockrest = 1;
|
|
break;
|
|
case K_HOST:
|
|
forcehost++;
|
|
break;
|
|
case K_REJECT:
|
|
flags |= RTF_REJECT;
|
|
break;
|
|
case K_BLACKHOLE:
|
|
flags |= RTF_BLACKHOLE;
|
|
break;
|
|
case K_PROTO1:
|
|
flags |= RTF_PROTO1;
|
|
break;
|
|
case K_PROTO2:
|
|
flags |= RTF_PROTO2;
|
|
break;
|
|
case K_CLONING:
|
|
flags |= RTF_CLONING;
|
|
break;
|
|
case K_XRESOLVE:
|
|
flags |= RTF_XRESOLVE;
|
|
break;
|
|
case K_STATIC:
|
|
flags |= RTF_STATIC;
|
|
break;
|
|
case K_IFA:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
(void) getaddr(RTA_IFA, *++argv, 0);
|
|
break;
|
|
case K_IFP:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
(void) getaddr(RTA_IFP, *++argv, 0);
|
|
break;
|
|
case K_GENMASK:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
(void) getaddr(RTA_GENMASK, *++argv, 0);
|
|
break;
|
|
case K_GATEWAY:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
(void) getaddr(RTA_GATEWAY, *++argv, 0);
|
|
break;
|
|
case K_DST:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
ishost = getaddr(RTA_DST, *++argv, &hp);
|
|
dest = *argv;
|
|
break;
|
|
case K_NETMASK:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
(void) getaddr(RTA_NETMASK, *++argv, 0);
|
|
/* FALLTHROUGH */
|
|
case K_NET:
|
|
forcenet++;
|
|
break;
|
|
case K_PREFIXLEN:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
if (prefixlen(*++argv) == -1) {
|
|
forcenet = 0;
|
|
ishost = 1;
|
|
} else {
|
|
forcenet = 1;
|
|
ishost = 0;
|
|
}
|
|
break;
|
|
case K_MTU:
|
|
case K_HOPCOUNT:
|
|
case K_EXPIRE:
|
|
case K_RECVPIPE:
|
|
case K_SENDPIPE:
|
|
case K_SSTHRESH:
|
|
case K_RTT:
|
|
case K_RTTVAR:
|
|
if (!--argc)
|
|
usage((char *)NULL);
|
|
set_metric(*++argv, key);
|
|
break;
|
|
default:
|
|
usage(1+*argv);
|
|
}
|
|
} else {
|
|
if ((rtm_addrs & RTA_DST) == 0) {
|
|
dest = *argv;
|
|
ishost = getaddr(RTA_DST, *argv, &hp);
|
|
} else if ((rtm_addrs & RTA_GATEWAY) == 0) {
|
|
gateway = *argv;
|
|
(void) getaddr(RTA_GATEWAY, *argv, &hp);
|
|
} else {
|
|
(void) getaddr(RTA_NETMASK, *argv, 0);
|
|
}
|
|
}
|
|
}
|
|
if (forcehost) {
|
|
ishost = 1;
|
|
#ifdef INET6
|
|
if (af == AF_INET6) {
|
|
rtm_addrs &= ~RTA_NETMASK;
|
|
memset((void *)&so_mask, 0, sizeof(so_mask));
|
|
}
|
|
#endif
|
|
}
|
|
if (forcenet)
|
|
ishost = 0;
|
|
flags |= RTF_UP;
|
|
if (ishost)
|
|
flags |= RTF_HOST;
|
|
if (iflag == 0)
|
|
flags |= RTF_GATEWAY;
|
|
for (attempts = 1; ; attempts++) {
|
|
errno = 0;
|
|
if ((ret = rtmsg(*cmd, flags)) == 0)
|
|
break;
|
|
if (errno != ENETUNREACH && errno != ESRCH)
|
|
break;
|
|
if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) {
|
|
hp->h_addr_list++;
|
|
bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr,
|
|
MIN(hp->h_length, sizeof(so_gate.sin.sin_addr)));
|
|
} else
|
|
break;
|
|
}
|
|
if (*cmd == 'g')
|
|
exit(0);
|
|
oerrno = errno;
|
|
(void) printf("%s %s %s", cmd, ishost? "host" : "net", dest);
|
|
if (*gateway) {
|
|
(void) printf(": gateway %s", gateway);
|
|
if (attempts > 1 && ret == 0 && af == AF_INET)
|
|
(void) printf(" (%s)",
|
|
inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
|
|
}
|
|
if (ret == 0)
|
|
(void) printf("\n");
|
|
else {
|
|
switch (oerrno) {
|
|
case ESRCH:
|
|
err = "not in table";
|
|
break;
|
|
case EBUSY:
|
|
err = "entry in use";
|
|
break;
|
|
case ENOBUFS:
|
|
err = "routing table overflow";
|
|
break;
|
|
default:
|
|
err = strerror(oerrno);
|
|
break;
|
|
}
|
|
(void) printf(": %s\n", err);
|
|
}
|
|
}
|
|
|
|
void
|
|
inet_makenetandmask(net, sin, bits)
|
|
u_long net, bits;
|
|
register struct sockaddr_in *sin;
|
|
{
|
|
u_long addr, mask = 0;
|
|
register char *cp;
|
|
|
|
rtm_addrs |= RTA_NETMASK;
|
|
if (net == 0)
|
|
mask = addr = 0;
|
|
else if (bits) {
|
|
addr = net;
|
|
mask = 0xffffffff << (32 - bits);
|
|
} else if (net < 128) {
|
|
addr = net << IN_CLASSA_NSHIFT;
|
|
mask = IN_CLASSA_NET;
|
|
} else if (net < 65536) {
|
|
addr = net << IN_CLASSB_NSHIFT;
|
|
mask = IN_CLASSB_NET;
|
|
} else if (net < 16777216L) {
|
|
addr = net << IN_CLASSC_NSHIFT;
|
|
mask = IN_CLASSC_NET;
|
|
} else {
|
|
addr = net;
|
|
if ((addr & IN_CLASSA_HOST) == 0)
|
|
mask = IN_CLASSA_NET;
|
|
else if ((addr & IN_CLASSB_HOST) == 0)
|
|
mask = IN_CLASSB_NET;
|
|
else if ((addr & IN_CLASSC_HOST) == 0)
|
|
mask = IN_CLASSC_NET;
|
|
else
|
|
mask = -1;
|
|
}
|
|
sin->sin_addr.s_addr = htonl(addr);
|
|
sin = &so_mask.sin;
|
|
sin->sin_addr.s_addr = htonl(mask);
|
|
sin->sin_len = 0;
|
|
sin->sin_family = 0;
|
|
cp = (char *)(&sin->sin_addr + 1);
|
|
while (*--cp == 0 && cp > (char *)sin)
|
|
;
|
|
sin->sin_len = 1 + cp - (char *)sin;
|
|
}
|
|
|
|
/*
|
|
* Interpret an argument as a network address of some kind,
|
|
* returning 1 if a host address, 0 if a network address.
|
|
*/
|
|
int
|
|
getaddr(which, s, hpp)
|
|
int which;
|
|
char *s;
|
|
struct hostent **hpp;
|
|
{
|
|
register sup su;
|
|
struct hostent *hp;
|
|
struct netent *np;
|
|
u_long val;
|
|
char *q,qs;
|
|
int afamily; /* local copy of af so we can change it */
|
|
|
|
if (af == 0) {
|
|
af = AF_INET;
|
|
aflen = sizeof(struct sockaddr_in);
|
|
}
|
|
afamily = af;
|
|
rtm_addrs |= which;
|
|
switch (which) {
|
|
case RTA_DST:
|
|
su = &so_dst;
|
|
break;
|
|
case RTA_GATEWAY:
|
|
su = &so_gate;
|
|
if (iflag) {
|
|
#define MAX_IFACES 400
|
|
int sock;
|
|
struct ifreq iflist[MAX_IFACES];
|
|
struct ifconf ifconf;
|
|
struct ifreq *ifr, *ifr_end;
|
|
struct sockaddr_dl *dl, *sdl = NULL;
|
|
|
|
/* Get socket */
|
|
if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0)
|
|
err(1, "socket");
|
|
|
|
/* Get interface list */
|
|
ifconf.ifc_req = iflist;
|
|
ifconf.ifc_len = sizeof(iflist);
|
|
if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0)
|
|
err(1, "ioctl(SIOCGIFCONF)");
|
|
close(sock);
|
|
|
|
/* Look for this interface in the list */
|
|
for (ifr = ifconf.ifc_req,
|
|
ifr_end = (struct ifreq *)
|
|
(ifconf.ifc_buf + ifconf.ifc_len);
|
|
ifr < ifr_end;
|
|
ifr = (struct ifreq *) ((char *) &ifr->ifr_addr
|
|
+ MAX(ifr->ifr_addr.sa_len,
|
|
sizeof(ifr->ifr_addr)))) {
|
|
dl = (struct sockaddr_dl *)&ifr->ifr_addr;
|
|
if (ifr->ifr_addr.sa_family == AF_LINK
|
|
&& (ifr->ifr_flags & IFF_POINTOPOINT)
|
|
&& !strncmp(s, dl->sdl_data, dl->sdl_nlen)
|
|
&& s[dl->sdl_nlen] == 0) {
|
|
sdl = dl;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If we found it, then use it */
|
|
if (sdl) {
|
|
su->sdl = *sdl;
|
|
return(1);
|
|
}
|
|
}
|
|
break;
|
|
case RTA_NETMASK:
|
|
su = &so_mask;
|
|
break;
|
|
case RTA_GENMASK:
|
|
su = &so_genmask;
|
|
break;
|
|
case RTA_IFP:
|
|
su = &so_ifp;
|
|
afamily = AF_LINK;
|
|
break;
|
|
case RTA_IFA:
|
|
su = &so_ifa;
|
|
break;
|
|
default:
|
|
usage("internal error");
|
|
/*NOTREACHED*/
|
|
}
|
|
su->sa.sa_len = aflen;
|
|
su->sa.sa_family = afamily; /* cases that don't want it have left already */
|
|
if (strcmp(s, "default") == 0) {
|
|
/*
|
|
* Default is net 0.0.0.0/0
|
|
*/
|
|
switch (which) {
|
|
case RTA_DST:
|
|
forcenet++;
|
|
/* bzero(su, sizeof(*su)); *//* for readability */
|
|
(void) getaddr(RTA_NETMASK, s, 0);
|
|
break;
|
|
case RTA_NETMASK:
|
|
case RTA_GENMASK:
|
|
/* bzero(su, sizeof(*su)); *//* for readability */
|
|
}
|
|
return (0);
|
|
}
|
|
switch (afamily) {
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
struct addrinfo hints, *res;
|
|
int error;
|
|
|
|
bzero(&hints, sizeof(struct addrinfo));
|
|
hints.ai_family = AF_INET6;
|
|
|
|
error = getaddrinfo(s, NULL, &hints, &res);
|
|
if (error != 0) {
|
|
(void) fprintf(stderr, "%s: bad value\n",
|
|
gai_strerror(error));
|
|
if (error == EAI_SYSTEM)
|
|
(void) fprintf(stderr, "%s\n",
|
|
strerror(errno));
|
|
exit(1);
|
|
}
|
|
bcopy(res->ai_addr, &su->sa, res->ai_addrlen);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef NS
|
|
case AF_NS:
|
|
if (which == RTA_DST) {
|
|
extern short ns_bh[3];
|
|
struct sockaddr_ns *sms = &(so_mask.sns);
|
|
bzero((char *)sms, sizeof(*sms));
|
|
sms->sns_family = 0;
|
|
sms->sns_len = 6;
|
|
sms->sns_addr.x_net = *(union ns_net *)ns_bh;
|
|
rtm_addrs |= RTA_NETMASK;
|
|
}
|
|
su->sns.sns_addr = ns_addr(s);
|
|
return (!ns_nullhost(su->sns.sns_addr));
|
|
#endif
|
|
|
|
|
|
case AF_APPLETALK:
|
|
if (!atalk_aton(s, &su->sat.sat_addr))
|
|
errx(EX_NOHOST, "bad address: %s", s);
|
|
rtm_addrs |= RTA_NETMASK;
|
|
return(forcehost || su->sat.sat_addr.s_node != 0);
|
|
|
|
case AF_LINK:
|
|
link_addr(s, &su->sdl);
|
|
return (1);
|
|
|
|
|
|
case PF_ROUTE:
|
|
su->sa.sa_len = sizeof(*su);
|
|
sockaddr(s, &su->sa);
|
|
return (1);
|
|
|
|
case AF_INET:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (hpp == NULL)
|
|
hpp = &hp;
|
|
*hpp = NULL;
|
|
|
|
q = strchr(s,'/');
|
|
if (q && which == RTA_DST) {
|
|
qs = *q;
|
|
*q = '\0';
|
|
if (((val = inet_addr(s)) != INADDR_NONE)) {
|
|
inet_makenetandmask(
|
|
htonl(val), &su->sin, strtoul(q+1, 0, 0));
|
|
return (0);
|
|
}
|
|
*q =qs;
|
|
}
|
|
if (((val = inet_addr(s)) != INADDR_NONE) &&
|
|
(which != RTA_DST || forcenet == 0)) {
|
|
su->sin.sin_addr.s_addr = val;
|
|
if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
|
|
return (1);
|
|
else {
|
|
val = ntohl(val);
|
|
goto netdone;
|
|
}
|
|
}
|
|
if ((val = inet_network(s)) != INADDR_NONE ||
|
|
(forcehost == 0 && (np = getnetbyname(s)) != NULL &&
|
|
(val = np->n_net) != 0)) {
|
|
netdone:
|
|
if (which == RTA_DST)
|
|
inet_makenetandmask(val, &su->sin, 0);
|
|
return (0);
|
|
}
|
|
hp = gethostbyname(s);
|
|
if (hp) {
|
|
*hpp = hp;
|
|
su->sin.sin_family = hp->h_addrtype;
|
|
bcopy(hp->h_addr, (char *)&su->sin.sin_addr,
|
|
MIN(hp->h_length, sizeof(su->sin.sin_addr)));
|
|
return (1);
|
|
}
|
|
errx(EX_NOHOST, "bad address: %s", s);
|
|
}
|
|
|
|
int
|
|
prefixlen(s)
|
|
char *s;
|
|
{
|
|
int len = atoi(s), q, r;
|
|
int max;
|
|
char *p;
|
|
|
|
rtm_addrs |= RTA_NETMASK;
|
|
switch (af) {
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
max = 128;
|
|
p = (char *)&so_mask.sin6.sin6_addr;
|
|
break;
|
|
#endif
|
|
case AF_INET:
|
|
max = 32;
|
|
p = (char *)&so_mask.sin.sin_addr;
|
|
break;
|
|
default:
|
|
(void) fprintf(stderr, "prefixlen not supported in this af\n");
|
|
exit(1);
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
if (len < 0 || max < len) {
|
|
(void) fprintf(stderr, "%s: bad value\n", s);
|
|
exit(1);
|
|
}
|
|
|
|
q = len >> 3;
|
|
r = len & 7;
|
|
so_mask.sa.sa_family = af;
|
|
so_mask.sa.sa_len = aflen;
|
|
memset((void *)p, 0, max / 8);
|
|
if (q > 0)
|
|
memset((void *)p, 0xff, q);
|
|
if (r > 0)
|
|
*((u_char *)p + q) = (0xff00 >> r) & 0xff;
|
|
if (len == max)
|
|
return -1;
|
|
else
|
|
return len;
|
|
}
|
|
|
|
#ifdef NS
|
|
short ns_nullh[] = {0,0,0};
|
|
short ns_bh[] = {-1,-1,-1};
|
|
|
|
char *
|
|
ns_print(sns)
|
|
struct sockaddr_ns *sns;
|
|
{
|
|
struct ns_addr work;
|
|
union { union ns_net net_e; u_long long_e; } net;
|
|
u_short port;
|
|
static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25];
|
|
char *host = "";
|
|
register char *p;
|
|
register u_char *q;
|
|
|
|
work = sns->sns_addr;
|
|
port = ntohs(work.x_port);
|
|
work.x_port = 0;
|
|
net.net_e = work.x_net;
|
|
if (ns_nullhost(work) && net.long_e == 0) {
|
|
if (!port)
|
|
return ("*.*");
|
|
(void) sprintf(mybuf, "*.%XH", port);
|
|
return (mybuf);
|
|
}
|
|
|
|
if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0)
|
|
host = "any";
|
|
else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0)
|
|
host = "*";
|
|
else {
|
|
q = work.x_host.c_host;
|
|
(void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH",
|
|
q[0], q[1], q[2], q[3], q[4], q[5]);
|
|
for (p = chost; *p == '0' && p < chost + 12; p++)
|
|
/* void */;
|
|
host = p;
|
|
}
|
|
if (port)
|
|
(void) sprintf(cport, ".%XH", htons(port));
|
|
else
|
|
*cport = 0;
|
|
|
|
(void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s",
|
|
(unsigned long)ntohl(net.long_e),
|
|
host, cport);
|
|
return (mybuf);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
interfaces()
|
|
{
|
|
size_t needed;
|
|
int mib[6];
|
|
char *buf, *lim, *next;
|
|
register struct rt_msghdr *rtm;
|
|
|
|
mib[0] = CTL_NET;
|
|
mib[1] = PF_ROUTE;
|
|
mib[2] = 0; /* protocol */
|
|
mib[3] = 0; /* wildcard address family */
|
|
mib[4] = NET_RT_IFLIST;
|
|
mib[5] = 0; /* no flags */
|
|
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
|
|
err(EX_OSERR, "route-sysctl-estimate");
|
|
if ((buf = malloc(needed)) == NULL)
|
|
errx(EX_OSERR, "malloc failed");
|
|
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
|
|
err(EX_OSERR, "actual retrieval of interface table");
|
|
lim = buf + needed;
|
|
for (next = buf; next < lim; next += rtm->rtm_msglen) {
|
|
rtm = (struct rt_msghdr *)next;
|
|
print_rtmsg(rtm, rtm->rtm_msglen);
|
|
}
|
|
}
|
|
|
|
void
|
|
monitor()
|
|
{
|
|
int n;
|
|
char msg[2048];
|
|
|
|
verbose = 1;
|
|
if (debugonly) {
|
|
interfaces();
|
|
exit(0);
|
|
}
|
|
for(;;) {
|
|
time_t now;
|
|
n = read(s, msg, 2048);
|
|
now = time(NULL);
|
|
(void) printf("got message of size %d on %s", n, ctime(&now));
|
|
print_rtmsg((struct rt_msghdr *)msg, n);
|
|
}
|
|
}
|
|
|
|
struct {
|
|
struct rt_msghdr m_rtm;
|
|
char m_space[512];
|
|
} m_rtmsg;
|
|
|
|
int
|
|
rtmsg(cmd, flags)
|
|
int cmd, flags;
|
|
{
|
|
static int seq;
|
|
int rlen;
|
|
register char *cp = m_rtmsg.m_space;
|
|
register int l;
|
|
|
|
#define NEXTADDR(w, u) \
|
|
if (rtm_addrs & (w)) {\
|
|
l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\
|
|
if (verbose) sodump(&(u),"u");\
|
|
}
|
|
|
|
errno = 0;
|
|
bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
|
|
if (cmd == 'a')
|
|
cmd = RTM_ADD;
|
|
else if (cmd == 'c')
|
|
cmd = RTM_CHANGE;
|
|
else if (cmd == 'g') {
|
|
cmd = RTM_GET;
|
|
if (so_ifp.sa.sa_family == 0) {
|
|
so_ifp.sa.sa_family = AF_LINK;
|
|
so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
|
|
rtm_addrs |= RTA_IFP;
|
|
}
|
|
} else
|
|
cmd = RTM_DELETE;
|
|
#define rtm m_rtmsg.m_rtm
|
|
rtm.rtm_type = cmd;
|
|
rtm.rtm_flags = flags;
|
|
rtm.rtm_version = RTM_VERSION;
|
|
rtm.rtm_seq = ++seq;
|
|
rtm.rtm_addrs = rtm_addrs;
|
|
rtm.rtm_rmx = rt_metrics;
|
|
rtm.rtm_inits = rtm_inits;
|
|
|
|
if (rtm_addrs & RTA_NETMASK)
|
|
mask_addr();
|
|
NEXTADDR(RTA_DST, so_dst);
|
|
NEXTADDR(RTA_GATEWAY, so_gate);
|
|
NEXTADDR(RTA_NETMASK, so_mask);
|
|
NEXTADDR(RTA_GENMASK, so_genmask);
|
|
NEXTADDR(RTA_IFP, so_ifp);
|
|
NEXTADDR(RTA_IFA, so_ifa);
|
|
rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
|
|
if (verbose)
|
|
print_rtmsg(&rtm, l);
|
|
if (debugonly)
|
|
return (0);
|
|
if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
|
|
warn("writing to routing socket");
|
|
return (-1);
|
|
}
|
|
if (cmd == RTM_GET) {
|
|
do {
|
|
l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
|
|
} while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
|
|
if (l < 0)
|
|
warn("read from routing socket");
|
|
else
|
|
print_getmsg(&rtm, l);
|
|
}
|
|
#undef rtm
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
mask_addr()
|
|
{
|
|
int olen = so_mask.sa.sa_len;
|
|
register char *cp1 = olen + (char *)&so_mask, *cp2;
|
|
|
|
for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
|
|
if (*--cp1 != 0) {
|
|
so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
|
|
break;
|
|
}
|
|
if ((rtm_addrs & RTA_DST) == 0)
|
|
return;
|
|
switch (so_dst.sa.sa_family) {
|
|
#ifdef NS
|
|
case AF_NS:
|
|
#endif
|
|
case AF_INET:
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
#endif
|
|
case AF_APPLETALK:
|
|
case 0:
|
|
return;
|
|
}
|
|
cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
|
|
cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
|
|
while (cp2 > cp1)
|
|
*--cp2 = 0;
|
|
cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
|
|
while (cp1 > so_dst.sa.sa_data)
|
|
*--cp1 &= *--cp2;
|
|
}
|
|
|
|
char *msgtypes[] = {
|
|
"",
|
|
"RTM_ADD: Add Route",
|
|
"RTM_DELETE: Delete Route",
|
|
"RTM_CHANGE: Change Metrics or flags",
|
|
"RTM_GET: Report Metrics",
|
|
"RTM_LOSING: Kernel Suspects Partitioning",
|
|
"RTM_REDIRECT: Told to use different route",
|
|
"RTM_MISS: Lookup failed on this address",
|
|
"RTM_LOCK: fix specified metrics",
|
|
"RTM_OLDADD: caused by SIOCADDRT",
|
|
"RTM_OLDDEL: caused by SIOCDELRT",
|
|
"RTM_RESOLVE: Route created by cloning",
|
|
"RTM_NEWADDR: address being added to iface",
|
|
"RTM_DELADDR: address being removed from iface",
|
|
"RTM_IFINFO: iface status change",
|
|
"RTM_NEWMADDR: new multicast group membership on iface",
|
|
"RTM_DELMADDR: multicast group membership removed from iface",
|
|
0,
|
|
};
|
|
|
|
char metricnames[] =
|
|
"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
|
|
"\1mtu";
|
|
char routeflags[] =
|
|
"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
|
|
"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
|
|
"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
|
|
"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
|
|
char ifnetflags[] =
|
|
"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
|
|
"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
|
|
"\017LINK2\020MULTICAST";
|
|
char addrnames[] =
|
|
"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
|
|
|
|
void
|
|
print_rtmsg(rtm, msglen)
|
|
register struct rt_msghdr *rtm;
|
|
int msglen;
|
|
{
|
|
struct if_msghdr *ifm;
|
|
struct ifa_msghdr *ifam;
|
|
#ifdef RTM_NEWMADDR
|
|
struct ifma_msghdr *ifmam;
|
|
#endif
|
|
|
|
if (verbose == 0)
|
|
return;
|
|
if (rtm->rtm_version != RTM_VERSION) {
|
|
(void) printf("routing message version %d not understood\n",
|
|
rtm->rtm_version);
|
|
return;
|
|
}
|
|
(void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen);
|
|
switch (rtm->rtm_type) {
|
|
case RTM_IFINFO:
|
|
ifm = (struct if_msghdr *)rtm;
|
|
(void) printf("if# %d, flags:", ifm->ifm_index);
|
|
bprintf(stdout, ifm->ifm_flags, ifnetflags);
|
|
pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
|
|
break;
|
|
case RTM_NEWADDR:
|
|
case RTM_DELADDR:
|
|
ifam = (struct ifa_msghdr *)rtm;
|
|
(void) printf("metric %d, flags:", ifam->ifam_metric);
|
|
bprintf(stdout, ifam->ifam_flags, routeflags);
|
|
pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
|
|
break;
|
|
#ifdef RTM_NEWMADDR
|
|
case RTM_NEWMADDR:
|
|
case RTM_DELMADDR:
|
|
ifmam = (struct ifma_msghdr *)rtm;
|
|
pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
|
|
break;
|
|
#endif
|
|
default:
|
|
(void) printf("pid: %ld, seq %d, errno %d, flags:",
|
|
(long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
|
|
bprintf(stdout, rtm->rtm_flags, routeflags);
|
|
pmsg_common(rtm);
|
|
}
|
|
}
|
|
|
|
void
|
|
print_getmsg(rtm, msglen)
|
|
register struct rt_msghdr *rtm;
|
|
int msglen;
|
|
{
|
|
struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
|
|
struct sockaddr_dl *ifp = NULL;
|
|
register struct sockaddr *sa;
|
|
register char *cp;
|
|
register int i;
|
|
|
|
(void) printf(" route to: %s\n", routename(&so_dst));
|
|
if (rtm->rtm_version != RTM_VERSION) {
|
|
warnx("routing message version %d not understood",
|
|
rtm->rtm_version);
|
|
return;
|
|
}
|
|
if (rtm->rtm_msglen > msglen) {
|
|
warnx("message length mismatch, in packet %d, returned %d",
|
|
rtm->rtm_msglen, msglen);
|
|
}
|
|
if (rtm->rtm_errno) {
|
|
errno = rtm->rtm_errno;
|
|
warn("message indicates error %d", errno);
|
|
return;
|
|
}
|
|
cp = ((char *)(rtm + 1));
|
|
if (rtm->rtm_addrs)
|
|
for (i = 1; i; i <<= 1)
|
|
if (i & rtm->rtm_addrs) {
|
|
sa = (struct sockaddr *)cp;
|
|
switch (i) {
|
|
case RTA_DST:
|
|
dst = sa;
|
|
break;
|
|
case RTA_GATEWAY:
|
|
gate = sa;
|
|
break;
|
|
case RTA_NETMASK:
|
|
mask = sa;
|
|
break;
|
|
case RTA_IFP:
|
|
if (sa->sa_family == AF_LINK &&
|
|
((struct sockaddr_dl *)sa)->sdl_nlen)
|
|
ifp = (struct sockaddr_dl *)sa;
|
|
break;
|
|
}
|
|
ADVANCE(cp, sa);
|
|
}
|
|
if (dst && mask)
|
|
mask->sa_family = dst->sa_family; /* XXX */
|
|
if (dst)
|
|
(void)printf("destination: %s\n", routename(dst));
|
|
if (mask) {
|
|
int savenflag = nflag;
|
|
|
|
nflag = 1;
|
|
(void)printf(" mask: %s\n", routename(mask));
|
|
nflag = savenflag;
|
|
}
|
|
if (gate && rtm->rtm_flags & RTF_GATEWAY)
|
|
(void)printf(" gateway: %s\n", routename(gate));
|
|
if (ifp)
|
|
(void)printf(" interface: %.*s\n",
|
|
ifp->sdl_nlen, ifp->sdl_data);
|
|
(void)printf(" flags: ");
|
|
bprintf(stdout, rtm->rtm_flags, routeflags);
|
|
|
|
#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
|
|
#define msec(u) (((u) + 500) / 1000) /* usec to msec */
|
|
|
|
(void) printf("\n%s\n", "\
|
|
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire");
|
|
printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
|
|
printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
|
|
printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
|
|
printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
|
|
printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
|
|
printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
|
|
printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
|
|
if (rtm->rtm_rmx.rmx_expire)
|
|
rtm->rtm_rmx.rmx_expire -= time(0);
|
|
printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
|
|
#undef lock
|
|
#undef msec
|
|
#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
|
|
if (verbose)
|
|
pmsg_common(rtm);
|
|
else if (rtm->rtm_addrs &~ RTA_IGN) {
|
|
(void) printf("sockaddrs: ");
|
|
bprintf(stdout, rtm->rtm_addrs, addrnames);
|
|
putchar('\n');
|
|
}
|
|
#undef RTA_IGN
|
|
}
|
|
|
|
void
|
|
pmsg_common(rtm)
|
|
register struct rt_msghdr *rtm;
|
|
{
|
|
(void) printf("\nlocks: ");
|
|
bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
|
|
(void) printf(" inits: ");
|
|
bprintf(stdout, rtm->rtm_inits, metricnames);
|
|
pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
|
|
}
|
|
|
|
void
|
|
pmsg_addrs(cp, addrs)
|
|
char *cp;
|
|
int addrs;
|
|
{
|
|
register struct sockaddr *sa;
|
|
int i;
|
|
|
|
if (addrs == 0)
|
|
return;
|
|
(void) printf("\nsockaddrs: ");
|
|
bprintf(stdout, addrs, addrnames);
|
|
(void) putchar('\n');
|
|
for (i = 1; i; i <<= 1)
|
|
if (i & addrs) {
|
|
sa = (struct sockaddr *)cp;
|
|
(void) printf(" %s", routename(sa));
|
|
ADVANCE(cp, sa);
|
|
}
|
|
(void) putchar('\n');
|
|
(void) fflush(stdout);
|
|
}
|
|
|
|
void
|
|
bprintf(fp, b, s)
|
|
register FILE *fp;
|
|
register int b;
|
|
register u_char *s;
|
|
{
|
|
register int i;
|
|
int gotsome = 0;
|
|
|
|
if (b == 0)
|
|
return;
|
|
while ((i = *s++) != 0) {
|
|
if (b & (1 << (i-1))) {
|
|
if (gotsome == 0)
|
|
i = '<';
|
|
else
|
|
i = ',';
|
|
(void) putc(i, fp);
|
|
gotsome = 1;
|
|
for (; (i = *s) > 32; s++)
|
|
(void) putc(i, fp);
|
|
} else
|
|
while (*s > 32)
|
|
s++;
|
|
}
|
|
if (gotsome)
|
|
(void) putc('>', fp);
|
|
}
|
|
|
|
int
|
|
keyword(cp)
|
|
char *cp;
|
|
{
|
|
register struct keytab *kt = keywords;
|
|
|
|
while (kt->kt_cp && strcmp(kt->kt_cp, cp))
|
|
kt++;
|
|
return kt->kt_i;
|
|
}
|
|
|
|
void
|
|
sodump(su, which)
|
|
register sup su;
|
|
char *which;
|
|
{
|
|
switch (su->sa.sa_family) {
|
|
case AF_LINK:
|
|
(void) printf("%s: link %s; ",
|
|
which, link_ntoa(&su->sdl));
|
|
break;
|
|
case AF_INET:
|
|
(void) printf("%s: inet %s; ",
|
|
which, inet_ntoa(su->sin.sin_addr));
|
|
break;
|
|
case AF_APPLETALK:
|
|
(void) printf("%s: atalk %s; ",
|
|
which, atalk_ntoa(su->sat.sat_addr));
|
|
break;
|
|
#ifdef NS
|
|
case AF_NS:
|
|
(void) printf("%s: xns %s; ",
|
|
which, ns_ntoa(su->sns.sns_addr));
|
|
break;
|
|
#endif
|
|
}
|
|
(void) fflush(stdout);
|
|
}
|
|
|
|
/* States*/
|
|
#define VIRGIN 0
|
|
#define GOTONE 1
|
|
#define GOTTWO 2
|
|
/* Inputs */
|
|
#define DIGIT (4*0)
|
|
#define END (4*1)
|
|
#define DELIM (4*2)
|
|
|
|
void
|
|
sockaddr(addr, sa)
|
|
register char *addr;
|
|
register struct sockaddr *sa;
|
|
{
|
|
register char *cp = (char *)sa;
|
|
int size = sa->sa_len;
|
|
char *cplim = cp + size;
|
|
register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
|
|
|
|
bzero(cp, size);
|
|
cp++;
|
|
do {
|
|
if ((*addr >= '0') && (*addr <= '9')) {
|
|
new = *addr - '0';
|
|
} else if ((*addr >= 'a') && (*addr <= 'f')) {
|
|
new = *addr - 'a' + 10;
|
|
} else if ((*addr >= 'A') && (*addr <= 'F')) {
|
|
new = *addr - 'A' + 10;
|
|
} else if (*addr == 0)
|
|
state |= END;
|
|
else
|
|
state |= DELIM;
|
|
addr++;
|
|
switch (state /* | INPUT */) {
|
|
case GOTTWO | DIGIT:
|
|
*cp++ = byte; /*FALLTHROUGH*/
|
|
case VIRGIN | DIGIT:
|
|
state = GOTONE; byte = new; continue;
|
|
case GOTONE | DIGIT:
|
|
state = GOTTWO; byte = new + (byte << 4); continue;
|
|
default: /* | DELIM */
|
|
state = VIRGIN; *cp++ = byte; byte = 0; continue;
|
|
case GOTONE | END:
|
|
case GOTTWO | END:
|
|
*cp++ = byte; /* FALLTHROUGH */
|
|
case VIRGIN | END:
|
|
break;
|
|
}
|
|
break;
|
|
} while (cp < cplim);
|
|
sa->sa_len = cp - (char *)sa;
|
|
}
|
|
|
|
int
|
|
atalk_aton(const char *text, struct at_addr *addr)
|
|
{
|
|
u_int net, node;
|
|
|
|
if (sscanf(text, "%u.%u", &net, &node) != 2
|
|
|| net > 0xffff || node > 0xff)
|
|
return(0);
|
|
addr->s_net = htons(net);
|
|
addr->s_node = node;
|
|
return(1);
|
|
}
|
|
|
|
char *
|
|
atalk_ntoa(struct at_addr at)
|
|
{
|
|
static char buf[20];
|
|
|
|
(void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
|
|
return(buf);
|
|
}
|
|
|
|
#ifdef INET6
|
|
char *
|
|
inet6_ntoa(struct sockaddr *sa)
|
|
{
|
|
char *cp;
|
|
struct sockaddr_in6 *sin6;
|
|
int error = -1, gap;
|
|
|
|
cp = NULL;
|
|
sin6 = (struct sockaddr_in6 *)sa;
|
|
gap = sizeof(struct sockaddr_in6) - sin6->sin6_len;
|
|
if (gap > 0)
|
|
bzero((char *)(sin6) + sin6->sin6_len, gap);
|
|
|
|
/* XXX: embedded link local addr check */
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
|
|
*(u_short *)&sin6->sin6_addr.s6_addr[2] != 0) {
|
|
u_short index;
|
|
|
|
index = *(u_short *)&sin6->sin6_addr.s6_addr[2];
|
|
*(u_short *)&sin6->sin6_addr.s6_addr[2] = 0;
|
|
if (sin6->sin6_scope_id == 0)
|
|
sin6->sin6_scope_id = ntohs(index);
|
|
}
|
|
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || sa->sa_len < 4)
|
|
cp = "default";
|
|
if (cp == 0 && !nflag)
|
|
error = getnameinfo(sa, sa->sa_len, name_buf, sizeof(name_buf),
|
|
NULL, 0, NI_NAMEREQD);
|
|
if (error != 0)
|
|
error = getnameinfo(sa, sa->sa_len, name_buf,
|
|
sizeof(name_buf), NULL, 0,
|
|
NI_NUMERICHOST|NI_WITHSCOPEID);
|
|
if (error != 0)
|
|
inet_ntop(AF_INET6, &sin6->sin6_addr, name_buf,
|
|
sizeof(name_buf));
|
|
|
|
return (cp != NULL) ? cp : name_buf;
|
|
}
|
|
#endif
|