9ba63ff592
comma-separated list and/or range specification: # route add -inet 192.0.2.0/24 198.51.100.1 -fib 1,3-5,6 Although all of the subcommands supports the modifier, "monitor" does not support the list or range specification at this moment. Reviewed by: bz
1951 lines
43 KiB
C
1951 lines
43 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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* 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 8.6 (Berkeley) 4/28/95";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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 <sys/queue.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 <netinet/if_ether.h>
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#include <netatalk/at.h>
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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 <paths.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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#include <ifaddrs.h>
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struct keytab {
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const 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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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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struct sockaddr_dl sdl;
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struct sockaddr_inarp sinarp;
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struct sockaddr_storage ss; /* added to avoid memory overrun */
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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;
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int s;
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int forcehost, forcenet, doflush, nflag, af, qflag, tflag;
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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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uid_t uid;
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static int defaultfib;
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static int numfibs;
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static int atalk_aton(const char *, struct at_addr *);
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static char *atalk_ntoa(struct at_addr);
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static void bprintf(FILE *, int, u_char *);
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static void flushroutes(int argc, char *argv[]);
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static int flushroutes_fib(int);
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static int getaddr(int, char *, struct hostent **);
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static int keyword(const char *);
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static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
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#ifdef INET6
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static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
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#endif
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static void interfaces(void);
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static void mask_addr(void);
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static void monitor(int, char*[]);
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static const char *netname(struct sockaddr *);
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static void newroute(int, char **);
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static int newroute_fib(int, char *, int);
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static void pmsg_addrs(char *, int, size_t);
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static void pmsg_common(struct rt_msghdr *, size_t);
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static int prefixlen(const char *);
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static void print_getmsg(struct rt_msghdr *, int, int);
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static void print_rtmsg(struct rt_msghdr *, size_t);
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static const char *routename(struct sockaddr *);
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static int rtmsg(int, int, int);
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static void set_metric(char *, int);
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static int set_sofib(int);
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static int set_procfib(int);
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static void sockaddr(char *, struct sockaddr *);
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static void sodump(sup, const char *);
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extern char *iso_ntoa(void);
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struct fibl {
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TAILQ_ENTRY(fibl) fl_next;
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int fl_num;
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int fl_error;
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int fl_errno;
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};
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TAILQ_HEAD(fibl_head_t, fibl) fibl_head;
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static int fiboptlist_csv(const char *, struct fibl_head_t *);
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static int fiboptlist_range(const char *, struct fibl_head_t *);
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static void usage(const char *) __dead2;
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void
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usage(const char *cp)
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{
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if (cp != NULL)
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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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int
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main(int argc, char **argv)
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{
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int ch;
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size_t len;
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if (argc < 2)
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usage(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(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 = geteuid();
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if (tflag)
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s = open(_PATH_DEVNULL, 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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len = sizeof(numfibs);
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if (sysctlbyname("net.fibs", (void *)&numfibs, &len, NULL, 0) == -1)
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numfibs = -1;
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len = sizeof(defaultfib);
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if (numfibs != -1 &&
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sysctlbyname("net.my_fibnum", (void *)&defaultfib, &len, NULL,
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0) == -1)
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defaultfib = -1;
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if (*argv != NULL)
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switch (keyword(*argv)) {
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case K_GET:
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case K_SHOW:
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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_DEL:
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case K_DELETE:
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newroute(argc, argv);
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/* NOTREACHED */
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case K_MONITOR:
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monitor(argc, argv);
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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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static int
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set_sofib(int fib)
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{
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if (fib < 0)
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return (0);
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return (setsockopt(s, SOL_SOCKET, SO_SETFIB, (void *)&fib,
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sizeof(fib)));
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}
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static int
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set_procfib(int fib)
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{
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if (fib < 0)
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return (0);
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return (setfib(fib));
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}
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static int
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fiboptlist_range(const char *arg, struct fibl_head_t *flh)
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{
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struct fibl *fl;
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char *str, *token, *endptr;
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int fib[2], i, error;
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str = strdup(arg);
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error = 0;
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i = 0;
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while ((token = strsep(&str, "-")) != NULL) {
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switch (i) {
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case 0:
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case 1:
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fib[i] = strtol(token, &endptr, 0);
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if (*endptr != '\0' || (fib[i] == 0 &&
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(errno == EINVAL || errno == ERANGE)))
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error = 1;
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break;
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default:
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error = 1;
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}
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if (error)
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goto fiboptlist_range_ret;
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i++;
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}
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if (fib[0] >= fib[1]) {
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error = 1;
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goto fiboptlist_range_ret;
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}
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for (i = fib[0]; i <= fib[1]; i++) {
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fl = calloc(1, sizeof(*fl));
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if (fl == NULL) {
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error = 1;
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goto fiboptlist_range_ret;
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}
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fl->fl_num = i;
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TAILQ_INSERT_TAIL(flh, fl, fl_next);
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}
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fiboptlist_range_ret:
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free(str);
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return (error);
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}
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#define ALLSTRLEN 64
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static int
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fiboptlist_csv(const char *arg, struct fibl_head_t *flh)
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{
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struct fibl *fl;
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char *str, *token, *endptr;
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int fib, error;
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if (strcmp("all", arg) == 0) {
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str = calloc(1, ALLSTRLEN);
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if (str == NULL) {
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error = 1;
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goto fiboptlist_csv_ret;
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}
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if (numfibs > 1)
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snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, numfibs - 1);
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else
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snprintf(str, ALLSTRLEN - 1, "%d", 0);
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} else if (strcmp("default", arg) == 0) {
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str = calloc(1, ALLSTRLEN);
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if (str == NULL) {
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error = 1;
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goto fiboptlist_csv_ret;
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}
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snprintf(str, ALLSTRLEN - 1, "%d", defaultfib);
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} else
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str = strdup(arg);
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error = 0;
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while ((token = strsep(&str, ",")) != NULL) {
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if (*token != '-' && strchr(token, '-') != NULL) {
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error = fiboptlist_range(token, flh);
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if (error)
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goto fiboptlist_csv_ret;
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} else {
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fib = strtol(token, &endptr, 0);
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if (*endptr != '\0' || (fib == 0 &&
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(errno == EINVAL || errno == ERANGE))) {
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error = 1;
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goto fiboptlist_csv_ret;
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}
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fl = calloc(1, sizeof(*fl));
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if (fl == NULL) {
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error = 1;
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goto fiboptlist_csv_ret;
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}
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fl->fl_num = fib;
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TAILQ_INSERT_TAIL(flh, fl, fl_next);
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}
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}
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fiboptlist_csv_ret:
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free(str);
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return (error);
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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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static void
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flushroutes(int argc, char *argv[])
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{
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struct fibl *fl;
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int error;
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if (uid != 0 && !debugonly) {
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errx(EX_NOPERM, "must be root to alter routing table");
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}
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shutdown(s, SHUT_RD); /* Don't want to read back our messages */
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TAILQ_INIT(&fibl_head);
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while (argc > 1) {
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argc--;
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argv++;
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if (**argv != '-')
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usage(*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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case K_LINK:
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af = AF_LINK;
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break;
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case K_FIB:
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if (!--argc)
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usage(*argv);
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error = fiboptlist_csv(*++argv, &fibl_head);
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if (error)
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usage(*argv);
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break;
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default:
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usage(*argv);
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}
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}
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if (TAILQ_EMPTY(&fibl_head)) {
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error = fiboptlist_csv("default", &fibl_head);
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if (error)
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errx(EX_OSERR, "fiboptlist_csv failed.");
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}
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TAILQ_FOREACH(fl, &fibl_head, fl_next)
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flushroutes_fib(fl->fl_num);
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}
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static int
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flushroutes_fib(int fib)
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{
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struct rt_msghdr *rtm;
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size_t needed;
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char *buf, *next, *lim;
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int mib[6], rlen, seqno, count = 0;
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int error;
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error = set_sofib(fib);
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error += set_procfib(fib);
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if (error) {
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warn("fib number %d is ignored", fib);
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return (error);
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}
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retry:
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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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if (errno == ENOMEM && count++ < 10) {
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warnx("Routing table grew, retrying");
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sleep(1);
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free(buf);
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goto retry;
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}
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err(EX_OSERR, "route-sysctl-get");
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}
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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 != 0) {
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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 < 0 && errno == EPERM)
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err(1, "write to routing socket");
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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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free(buf);
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goto retry;
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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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printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
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routename(sa) : netname(sa));
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sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
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printf("%-20.20s ", routename(sa));
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if (fib >= 0)
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printf("-fib %-3d ", fib);
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printf("done\n");
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}
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}
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return (error);
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}
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const char *
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routename(struct sockaddr *sa)
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{
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const 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, n;
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|
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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 = strchr(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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|
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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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|
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cp = NULL;
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if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
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cp = "default";
|
|
if (cp == NULL && !nflag) {
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|
hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
|
|
AF_INET);
|
|
if (hp != NULL) {
|
|
char *cptr;
|
|
cptr = strchr(hp->h_name, '.');
|
|
if (cptr != NULL &&
|
|
strcmp(cptr + 1, domain) == 0)
|
|
*cptr = '\0';
|
|
cp = hp->h_name;
|
|
}
|
|
}
|
|
if (cp != NULL) {
|
|
strncpy(line, cp, sizeof(line) - 1);
|
|
line[sizeof(line) - 1] = '\0';
|
|
} else
|
|
(void) sprintf(line, "%s", inet_ntoa(in));
|
|
break;
|
|
}
|
|
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
struct sockaddr_in6 sin6; /* use static var for safety */
|
|
int niflags = 0;
|
|
|
|
memset(&sin6, 0, sizeof(sin6));
|
|
memcpy(&sin6, sa, sa->sa_len);
|
|
sin6.sin6_len = sizeof(struct sockaddr_in6);
|
|
sin6.sin6_family = AF_INET6;
|
|
#ifdef __KAME__
|
|
if (sa->sa_len == sizeof(struct sockaddr_in6) &&
|
|
(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
|
|
IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
|
|
IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
|
|
sin6.sin6_scope_id == 0) {
|
|
sin6.sin6_scope_id =
|
|
ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
|
|
sin6.sin6_addr.s6_addr[2] = 0;
|
|
sin6.sin6_addr.s6_addr[3] = 0;
|
|
}
|
|
#endif
|
|
if (nflag)
|
|
niflags |= NI_NUMERICHOST;
|
|
if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
|
|
line, sizeof(line), NULL, 0, niflags) != 0)
|
|
strncpy(line, "invalid", sizeof(line));
|
|
|
|
return(line);
|
|
}
|
|
#endif
|
|
|
|
case AF_APPLETALK:
|
|
(void) snprintf(line, sizeof(line), "atalk %s",
|
|
atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
|
|
break;
|
|
|
|
case AF_LINK:
|
|
return (link_ntoa((struct sockaddr_dl *)sa));
|
|
|
|
default:
|
|
{
|
|
u_short *sp = (u_short *)sa;
|
|
u_short *splim = sp + ((sa->sa_len + 1) >> 1);
|
|
char *cps = line + sprintf(line, "(%d)", sa->sa_family);
|
|
char *cpe = line + sizeof(line);
|
|
|
|
while (++sp < splim && cps < cpe) /* start with sa->sa_data */
|
|
if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
|
|
cps += n;
|
|
else
|
|
*cps = '\0';
|
|
break;
|
|
}
|
|
}
|
|
return (line);
|
|
}
|
|
|
|
/*
|
|
* Return the name of the network whose address is given.
|
|
* The address is assumed to be that of a net, not a host.
|
|
*/
|
|
const char *
|
|
netname(struct sockaddr *sa)
|
|
{
|
|
const char *cp = NULL;
|
|
static char line[MAXHOSTNAMELEN + 1];
|
|
struct netent *np = NULL;
|
|
u_long i;
|
|
int n;
|
|
|
|
switch (sa->sa_family) {
|
|
|
|
case AF_INET:
|
|
{ struct in_addr in;
|
|
in = ((struct sockaddr_in *)sa)->sin_addr;
|
|
|
|
i = in.s_addr = ntohl(in.s_addr);
|
|
if (in.s_addr == 0)
|
|
cp = "default";
|
|
else if (!nflag) {
|
|
np = getnetbyaddr(i, AF_INET);
|
|
if (np != NULL)
|
|
cp = np->n_name;
|
|
}
|
|
#define C(x) (unsigned)((x) & 0xff)
|
|
if (cp != NULL)
|
|
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));
|
|
#undef C
|
|
break;
|
|
}
|
|
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
struct sockaddr_in6 sin6; /* use static var for safety */
|
|
int niflags = 0;
|
|
|
|
memset(&sin6, 0, sizeof(sin6));
|
|
memcpy(&sin6, sa, sa->sa_len);
|
|
sin6.sin6_len = sizeof(struct sockaddr_in6);
|
|
sin6.sin6_family = AF_INET6;
|
|
#ifdef __KAME__
|
|
if (sa->sa_len == sizeof(struct sockaddr_in6) &&
|
|
(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
|
|
IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
|
|
IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
|
|
sin6.sin6_scope_id == 0) {
|
|
sin6.sin6_scope_id =
|
|
ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
|
|
sin6.sin6_addr.s6_addr[2] = 0;
|
|
sin6.sin6_addr.s6_addr[3] = 0;
|
|
}
|
|
#endif
|
|
if (nflag)
|
|
niflags |= NI_NUMERICHOST;
|
|
if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
|
|
line, sizeof(line), NULL, 0, niflags) != 0)
|
|
strncpy(line, "invalid", sizeof(line));
|
|
|
|
return(line);
|
|
}
|
|
#endif
|
|
|
|
case AF_APPLETALK:
|
|
(void) snprintf(line, sizeof(line), "atalk %s",
|
|
atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
|
|
break;
|
|
|
|
case AF_LINK:
|
|
return (link_ntoa((struct sockaddr_dl *)sa));
|
|
|
|
|
|
default:
|
|
{
|
|
u_short *sp = (u_short *)sa->sa_data;
|
|
u_short *splim = sp + ((sa->sa_len + 1)>>1);
|
|
char *cps = line + sprintf(line, "af %d:", sa->sa_family);
|
|
char *cpe = line + sizeof(line);
|
|
|
|
while (sp < splim && cps < cpe)
|
|
if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
|
|
cps += n;
|
|
else
|
|
*cps = '\0';
|
|
break;
|
|
}
|
|
}
|
|
return (line);
|
|
}
|
|
|
|
static void
|
|
set_metric(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);
|
|
caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
|
|
}
|
|
rtm_inits |= flag;
|
|
if (lockrest || locking)
|
|
rt_metrics.rmx_locks |= flag;
|
|
if (locking)
|
|
locking = 0;
|
|
*valp = atoi(value);
|
|
}
|
|
|
|
#define F_ISHOST 0x01
|
|
#define F_FORCENET 0x02
|
|
#define F_FORCEHOST 0x04
|
|
#define F_PROXY 0x08
|
|
#define F_INTERFACE 0x10
|
|
|
|
static void
|
|
newroute(int argc, char **argv)
|
|
{
|
|
struct hostent *hp;
|
|
struct fibl *fl;
|
|
char *cmd;
|
|
const char *dest, *gateway, *errmsg;
|
|
int key, error, flags, nrflags, fibnum;
|
|
|
|
if (uid != 0) {
|
|
errx(EX_NOPERM, "must be root to alter routing table");
|
|
}
|
|
|
|
dest = NULL;
|
|
gateway = NULL;
|
|
flags = RTF_STATIC;
|
|
nrflags = 0;
|
|
hp = NULL;
|
|
TAILQ_INIT(&fibl_head);
|
|
|
|
cmd = argv[0];
|
|
if (*cmd != 'g' && *cmd != 's')
|
|
shutdown(s, SHUT_RD); /* 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;
|
|
case K_IFACE:
|
|
case K_INTERFACE:
|
|
nrflags |= F_INTERFACE;
|
|
break;
|
|
case K_NOSTATIC:
|
|
flags &= ~RTF_STATIC;
|
|
break;
|
|
case K_LOCK:
|
|
locking = 1;
|
|
break;
|
|
case K_LOCKREST:
|
|
lockrest = 1;
|
|
break;
|
|
case K_HOST:
|
|
nrflags |= F_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_PROXY:
|
|
nrflags |= F_PROXY;
|
|
break;
|
|
case K_XRESOLVE:
|
|
flags |= RTF_XRESOLVE;
|
|
break;
|
|
case K_STATIC:
|
|
flags |= RTF_STATIC;
|
|
break;
|
|
case K_STICKY:
|
|
flags |= RTF_STICKY;
|
|
break;
|
|
case K_NOSTICK:
|
|
flags &= ~RTF_STICKY;
|
|
break;
|
|
case K_FIB:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
error = fiboptlist_csv(*++argv, &fibl_head);
|
|
if (error)
|
|
usage(NULL);
|
|
break;
|
|
case K_IFA:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
(void) getaddr(RTA_IFA, *++argv, 0);
|
|
break;
|
|
case K_IFP:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
(void) getaddr(RTA_IFP, *++argv, 0);
|
|
break;
|
|
case K_GENMASK:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
(void) getaddr(RTA_GENMASK, *++argv, 0);
|
|
break;
|
|
case K_GATEWAY:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
(void) getaddr(RTA_GATEWAY, *++argv, 0);
|
|
break;
|
|
case K_DST:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
if (getaddr(RTA_DST, *++argv, &hp))
|
|
nrflags |= F_ISHOST;
|
|
dest = *argv;
|
|
break;
|
|
case K_NETMASK:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
(void) getaddr(RTA_NETMASK, *++argv, 0);
|
|
/* FALLTHROUGH */
|
|
case K_NET:
|
|
nrflags |= F_FORCENET;
|
|
break;
|
|
case K_PREFIXLEN:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
if (prefixlen(*++argv) == -1) {
|
|
nrflags &= ~F_FORCENET;
|
|
nrflags |= F_ISHOST;
|
|
} else {
|
|
nrflags |= F_FORCENET;
|
|
nrflags &= ~F_ISHOST;
|
|
}
|
|
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:
|
|
case K_WEIGHT:
|
|
if (!--argc)
|
|
usage(NULL);
|
|
set_metric(*++argv, key);
|
|
break;
|
|
default:
|
|
usage(1+*argv);
|
|
}
|
|
} else {
|
|
if ((rtm_addrs & RTA_DST) == 0) {
|
|
dest = *argv;
|
|
if (getaddr(RTA_DST, *argv, &hp))
|
|
nrflags |= F_ISHOST;
|
|
} else if ((rtm_addrs & RTA_GATEWAY) == 0) {
|
|
gateway = *argv;
|
|
(void) getaddr(RTA_GATEWAY, *argv, &hp);
|
|
} else {
|
|
(void) getaddr(RTA_NETMASK, *argv, 0);
|
|
nrflags |= F_FORCENET;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nrflags & F_FORCEHOST) {
|
|
nrflags |= F_ISHOST;
|
|
#ifdef INET6
|
|
if (af == AF_INET6) {
|
|
rtm_addrs &= ~RTA_NETMASK;
|
|
memset((void *)&so_mask, 0, sizeof(so_mask));
|
|
}
|
|
#endif
|
|
}
|
|
if (nrflags & F_FORCENET)
|
|
nrflags &= ~F_ISHOST;
|
|
flags |= RTF_UP;
|
|
if (nrflags & F_ISHOST)
|
|
flags |= RTF_HOST;
|
|
if ((nrflags & F_INTERFACE) == 0)
|
|
flags |= RTF_GATEWAY;
|
|
if (nrflags & F_PROXY) {
|
|
so_dst.sinarp.sin_other = SIN_PROXY;
|
|
flags |= RTF_ANNOUNCE;
|
|
}
|
|
if (dest == NULL)
|
|
dest = "";
|
|
if (gateway == NULL)
|
|
gateway = "";
|
|
|
|
if (TAILQ_EMPTY(&fibl_head)) {
|
|
error = fiboptlist_csv("default", &fibl_head);
|
|
if (error)
|
|
errx(EX_OSERR, "fiboptlist_csv failed.");
|
|
}
|
|
error = 0;
|
|
TAILQ_FOREACH(fl, &fibl_head, fl_next) {
|
|
fl->fl_error = newroute_fib(fl->fl_num, cmd, flags);
|
|
if (fl->fl_error)
|
|
fl->fl_errno = errno;
|
|
error += fl->fl_error;
|
|
}
|
|
if (*cmd == 'g' || *cmd == 's')
|
|
exit(error);
|
|
|
|
error = 0;
|
|
if (!qflag) {
|
|
fibnum = 0;
|
|
TAILQ_FOREACH(fl, &fibl_head, fl_next) {
|
|
if (fl->fl_error == 0)
|
|
fibnum++;
|
|
}
|
|
if (fibnum > 0) {
|
|
int firstfib = 1;
|
|
|
|
printf("%s %s %s", cmd,
|
|
(nrflags & F_ISHOST) ? "host" : "net", dest);
|
|
if (*gateway)
|
|
printf(": gateway %s", gateway);
|
|
|
|
if (numfibs > 1) {
|
|
TAILQ_FOREACH(fl, &fibl_head, fl_next) {
|
|
if (fl->fl_error == 0
|
|
&& fl->fl_num >= 0) {
|
|
if (firstfib) {
|
|
printf(" fib ");
|
|
firstfib = 0;
|
|
}
|
|
printf("%d", fl->fl_num);
|
|
if (fibnum-- > 1)
|
|
printf(",");
|
|
}
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
fibnum = 0;
|
|
TAILQ_FOREACH(fl, &fibl_head, fl_next) {
|
|
if (fl->fl_error != 0) {
|
|
printf("%s %s %s", cmd, (nrflags & F_ISHOST)
|
|
? "host" : "net", dest);
|
|
if (*gateway)
|
|
printf(": gateway %s", gateway);
|
|
|
|
if (fl->fl_num >= 0)
|
|
printf(" fib %d", fl->fl_num);
|
|
|
|
switch (fl->fl_errno) {
|
|
case ESRCH:
|
|
errmsg = "not in table";
|
|
break;
|
|
case EBUSY:
|
|
errmsg = "entry in use";
|
|
break;
|
|
case ENOBUFS:
|
|
errmsg = "not enough memory";
|
|
break;
|
|
case EADDRINUSE:
|
|
/*
|
|
* handle recursion avoidance
|
|
* in rt_setgate()
|
|
*/
|
|
errmsg = "gateway uses the same route";
|
|
break;
|
|
case EEXIST:
|
|
errmsg = "route already in table";
|
|
break;
|
|
default:
|
|
errmsg = strerror(fl->fl_errno);
|
|
break;
|
|
}
|
|
printf(": %s\n", errmsg);
|
|
error = 1;
|
|
}
|
|
}
|
|
}
|
|
exit(error);
|
|
}
|
|
|
|
static int
|
|
newroute_fib(int fib, char *cmd, int flags)
|
|
{
|
|
int error;
|
|
|
|
error = set_sofib(fib);
|
|
if (error) {
|
|
warn("fib number %d is ignored", fib);
|
|
return (error);
|
|
}
|
|
|
|
error = rtmsg(*cmd, flags, fib);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
inet_makenetandmask(u_long net, struct sockaddr_in *sin, u_long bits)
|
|
{
|
|
u_long mask = 0;
|
|
char *cp;
|
|
|
|
rtm_addrs |= RTA_NETMASK;
|
|
|
|
/*
|
|
* If no /xx was specified we must calculate the
|
|
* CIDR address.
|
|
*/
|
|
if ((bits == 0) && (net != 0)) {
|
|
u_long i, j;
|
|
for(i=0,j=0xff; i<4; i++) {
|
|
if (net & j) {
|
|
break;
|
|
}
|
|
j <<= 8;
|
|
}
|
|
/* i holds the first non zero bit */
|
|
bits = 32 - (i*8);
|
|
}
|
|
if (bits != 0)
|
|
mask = 0xffffffff << (32 - bits);
|
|
|
|
sin->sin_addr.s_addr = htonl(net);
|
|
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;
|
|
}
|
|
|
|
#ifdef INET6
|
|
/*
|
|
* XXX the function may need more improvement...
|
|
*/
|
|
static int
|
|
inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
|
|
{
|
|
struct in6_addr in6;
|
|
|
|
if (plen == NULL) {
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
|
|
sin6->sin6_scope_id == 0) {
|
|
plen = "0";
|
|
} else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
|
|
/* aggregatable global unicast - RFC2374 */
|
|
memset(&in6, 0, sizeof(in6));
|
|
if (!memcmp(&sin6->sin6_addr.s6_addr[8],
|
|
&in6.s6_addr[8], 8))
|
|
plen = "64";
|
|
}
|
|
}
|
|
|
|
if (plen == NULL || strcmp(plen, "128") == 0)
|
|
return (1);
|
|
rtm_addrs |= RTA_NETMASK;
|
|
prefixlen(plen);
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Interpret an argument as a network address of some kind,
|
|
* returning 1 if a host address, 0 if a network address.
|
|
*/
|
|
static int
|
|
getaddr(int which, char *str, struct hostent **hpp)
|
|
{
|
|
sup su;
|
|
struct hostent *hp;
|
|
struct netent *np;
|
|
u_long val;
|
|
char *q;
|
|
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) {
|
|
struct ifaddrs *ifap, *ifa;
|
|
struct sockaddr_dl *sdl = NULL;
|
|
|
|
if (getifaddrs(&ifap))
|
|
err(1, "getifaddrs");
|
|
|
|
for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
|
|
if (ifa->ifa_addr->sa_family != AF_LINK)
|
|
continue;
|
|
|
|
if (strcmp(str, ifa->ifa_name) != 0)
|
|
continue;
|
|
|
|
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
|
|
}
|
|
/* If we found it, then use it */
|
|
if (sdl != NULL) {
|
|
/*
|
|
* Copy is safe since we have a
|
|
* sockaddr_storage member in sockunion{}.
|
|
* Note that we need to copy before calling
|
|
* freeifaddrs().
|
|
*/
|
|
memcpy(&su->sdl, sdl, sdl->sdl_len);
|
|
}
|
|
freeifaddrs(ifap);
|
|
if (sdl != NULL)
|
|
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(str, "default") == 0) {
|
|
/*
|
|
* Default is net 0.0.0.0/0
|
|
*/
|
|
switch (which) {
|
|
case RTA_DST:
|
|
forcenet++;
|
|
#if 0
|
|
bzero(su, sizeof(*su)); /* for readability */
|
|
#endif
|
|
getaddr(RTA_NETMASK, str, 0);
|
|
break;
|
|
#if 0
|
|
case RTA_NETMASK:
|
|
case RTA_GENMASK:
|
|
bzero(su, sizeof(*su)); /* for readability */
|
|
#endif
|
|
}
|
|
return (0);
|
|
}
|
|
switch (afamily) {
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
struct addrinfo hints, *res;
|
|
int ecode;
|
|
|
|
q = NULL;
|
|
if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
|
|
*q = '\0';
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = afamily; /*AF_INET6*/
|
|
hints.ai_socktype = SOCK_DGRAM; /*dummy*/
|
|
ecode = getaddrinfo(str, NULL, &hints, &res);
|
|
if (ecode != 0 || res->ai_family != AF_INET6 ||
|
|
res->ai_addrlen != sizeof(su->sin6)) {
|
|
(void) fprintf(stderr, "%s: %s\n", str,
|
|
gai_strerror(ecode));
|
|
exit(1);
|
|
}
|
|
memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
|
|
#ifdef __KAME__
|
|
if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
|
|
IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr) ||
|
|
IN6_IS_ADDR_MC_NODELOCAL(&su->sin6.sin6_addr)) &&
|
|
su->sin6.sin6_scope_id) {
|
|
*(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
|
|
htons(su->sin6.sin6_scope_id);
|
|
su->sin6.sin6_scope_id = 0;
|
|
}
|
|
#endif
|
|
freeaddrinfo(res);
|
|
if (q != NULL)
|
|
*q++ = '/';
|
|
if (which == RTA_DST)
|
|
return (inet6_makenetandmask(&su->sin6, q));
|
|
return (0);
|
|
}
|
|
#endif /* INET6 */
|
|
|
|
case AF_APPLETALK:
|
|
if (!atalk_aton(str, &su->sat.sat_addr))
|
|
errx(EX_NOHOST, "bad address: %s", str);
|
|
rtm_addrs |= RTA_NETMASK;
|
|
return(forcehost || su->sat.sat_addr.s_node != 0);
|
|
|
|
case AF_LINK:
|
|
link_addr(str, &su->sdl);
|
|
return (1);
|
|
|
|
|
|
case PF_ROUTE:
|
|
su->sa.sa_len = sizeof(*su);
|
|
sockaddr(str, &su->sa);
|
|
return (1);
|
|
|
|
case AF_INET:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (hpp == NULL)
|
|
hpp = &hp;
|
|
*hpp = NULL;
|
|
|
|
q = strchr(str,'/');
|
|
if (q != NULL && which == RTA_DST) {
|
|
*q = '\0';
|
|
if ((val = inet_network(str)) != INADDR_NONE) {
|
|
inet_makenetandmask(
|
|
val, &su->sin, strtoul(q+1, 0, 0));
|
|
return (0);
|
|
}
|
|
*q = '/';
|
|
}
|
|
if ((which != RTA_DST || forcenet == 0) &&
|
|
inet_aton(str, &su->sin.sin_addr)) {
|
|
val = su->sin.sin_addr.s_addr;
|
|
if (which != RTA_DST || forcehost ||
|
|
inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
|
|
return (1);
|
|
else {
|
|
val = ntohl(val);
|
|
goto netdone;
|
|
}
|
|
}
|
|
if (which == RTA_DST && forcehost == 0 &&
|
|
((val = inet_network(str)) != INADDR_NONE ||
|
|
((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
|
|
netdone:
|
|
inet_makenetandmask(val, &su->sin, 0);
|
|
return (0);
|
|
}
|
|
hp = gethostbyname(str);
|
|
if (hp != NULL) {
|
|
*hpp = hp;
|
|
su->sin.sin_family = hp->h_addrtype;
|
|
memmove((char *)&su->sin.sin_addr, hp->h_addr,
|
|
MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
|
|
return (1);
|
|
}
|
|
errx(EX_NOHOST, "bad address: %s", str);
|
|
}
|
|
|
|
static int
|
|
prefixlen(const char *str)
|
|
{
|
|
int len = atoi(str), 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:
|
|
fprintf(stderr, "prefixlen not supported in this af\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (len < 0 || max < len) {
|
|
fprintf(stderr, "%s: bad value\n", str);
|
|
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);
|
|
}
|
|
|
|
static void
|
|
interfaces(void)
|
|
{
|
|
size_t needed;
|
|
int mib[6];
|
|
char *buf, *lim, *next, count = 0;
|
|
struct rt_msghdr *rtm;
|
|
|
|
retry2:
|
|
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) {
|
|
if (errno == ENOMEM && count++ < 10) {
|
|
warnx("Routing table grew, retrying");
|
|
sleep(1);
|
|
free(buf);
|
|
goto retry2;
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
|
|
static void
|
|
monitor(int argc, char *argv[])
|
|
{
|
|
int n, fib, error;
|
|
char msg[2048], *endptr;
|
|
|
|
fib = defaultfib;
|
|
while (argc > 1) {
|
|
argc--;
|
|
argv++;
|
|
if (**argv != '-')
|
|
usage(*argv);
|
|
switch (keyword(*argv + 1)) {
|
|
case K_FIB:
|
|
if (!--argc)
|
|
usage(*argv);
|
|
fib = strtol(*++argv, &endptr, 0);
|
|
if (*endptr != '\0' || (fib == 0 &&
|
|
(errno == EINVAL || errno == ERANGE)))
|
|
usage(*argv);
|
|
break;
|
|
default:
|
|
usage(*argv);
|
|
}
|
|
}
|
|
error = set_sofib(fib);
|
|
if (error)
|
|
errx(EX_USAGE, "invalid fib number: %d", fib);
|
|
|
|
verbose = 1;
|
|
if (debugonly) {
|
|
interfaces();
|
|
exit(0);
|
|
}
|
|
for (;;) {
|
|
time_t now;
|
|
n = read(s, msg, 2048);
|
|
now = time(NULL);
|
|
(void) printf("\ngot 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;
|
|
|
|
static int
|
|
rtmsg(int cmd, int flags, int fib)
|
|
{
|
|
static int seq;
|
|
int rlen;
|
|
char *cp = m_rtmsg.m_space;
|
|
int l;
|
|
|
|
#define NEXTADDR(w, u) \
|
|
if (rtm_addrs & (w)) {\
|
|
l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\
|
|
if (verbose) sodump(&(u),#u);\
|
|
}
|
|
|
|
errno = 0;
|
|
memset(&m_rtmsg, 0, sizeof(m_rtmsg));
|
|
if (cmd == 'a')
|
|
cmd = RTM_ADD;
|
|
else if (cmd == 'c')
|
|
cmd = RTM_CHANGE;
|
|
else if (cmd == 'g' || cmd == 's') {
|
|
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) {
|
|
if (errno == EPERM)
|
|
err(1, "writing to routing socket");
|
|
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, fib);
|
|
}
|
|
#undef rtm
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
mask_addr(void)
|
|
{
|
|
int olen = so_mask.sa.sa_len;
|
|
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) {
|
|
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;
|
|
}
|
|
|
|
const 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",
|
|
"RTM_IFANNOUNCE: interface arrival/departure",
|
|
"RTM_IEEE80211: IEEE 802.11 wireless event",
|
|
};
|
|
|
|
char metricnames[] =
|
|
"\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
|
|
"\1mtu";
|
|
char routeflags[] =
|
|
"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
|
|
"\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
|
|
"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
|
|
"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
|
|
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";
|
|
|
|
static const char errfmt[] =
|
|
"\n%s: truncated route message, only %zu bytes left\n";
|
|
|
|
static void
|
|
print_rtmsg(struct rt_msghdr *rtm, size_t msglen)
|
|
{
|
|
struct if_msghdr *ifm;
|
|
struct ifa_msghdr *ifam;
|
|
#ifdef RTM_NEWMADDR
|
|
struct ifma_msghdr *ifmam;
|
|
#endif
|
|
struct if_announcemsghdr *ifan;
|
|
const char *state;
|
|
|
|
if (verbose == 0)
|
|
return;
|
|
if (rtm->rtm_version != RTM_VERSION) {
|
|
(void) printf("routing message version %d not understood\n",
|
|
rtm->rtm_version);
|
|
return;
|
|
}
|
|
if (rtm->rtm_type < sizeof(msgtypes) / sizeof(msgtypes[0]))
|
|
(void)printf("%s: ", msgtypes[rtm->rtm_type]);
|
|
else
|
|
(void)printf("unknown type %d: ", rtm->rtm_type);
|
|
(void)printf("len %d, ", rtm->rtm_msglen);
|
|
|
|
#define REQUIRE(x) do { \
|
|
if (msglen < sizeof(x)) \
|
|
goto badlen; \
|
|
else \
|
|
msglen -= sizeof(x); \
|
|
} while (0)
|
|
|
|
switch (rtm->rtm_type) {
|
|
case RTM_IFINFO:
|
|
REQUIRE(struct if_msghdr);
|
|
ifm = (struct if_msghdr *)rtm;
|
|
(void) printf("if# %d, ", ifm->ifm_index);
|
|
switch (ifm->ifm_data.ifi_link_state) {
|
|
case LINK_STATE_DOWN:
|
|
state = "down";
|
|
break;
|
|
case LINK_STATE_UP:
|
|
state = "up";
|
|
break;
|
|
default:
|
|
state = "unknown";
|
|
break;
|
|
}
|
|
(void) printf("link: %s, flags:", state);
|
|
bprintf(stdout, ifm->ifm_flags, ifnetflags);
|
|
pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen);
|
|
break;
|
|
case RTM_NEWADDR:
|
|
case RTM_DELADDR:
|
|
REQUIRE(struct ifa_msghdr);
|
|
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, msglen);
|
|
break;
|
|
#ifdef RTM_NEWMADDR
|
|
case RTM_NEWMADDR:
|
|
case RTM_DELMADDR:
|
|
REQUIRE(struct ifma_msghdr);
|
|
ifmam = (struct ifma_msghdr *)rtm;
|
|
pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
|
|
break;
|
|
#endif
|
|
case RTM_IFANNOUNCE:
|
|
REQUIRE(struct if_announcemsghdr);
|
|
ifan = (struct if_announcemsghdr *)rtm;
|
|
(void) printf("if# %d, what: ", ifan->ifan_index);
|
|
switch (ifan->ifan_what) {
|
|
case IFAN_ARRIVAL:
|
|
printf("arrival");
|
|
break;
|
|
case IFAN_DEPARTURE:
|
|
printf("departure");
|
|
break;
|
|
default:
|
|
printf("#%d", ifan->ifan_what);
|
|
break;
|
|
}
|
|
printf("\n");
|
|
break;
|
|
|
|
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, msglen);
|
|
}
|
|
|
|
return;
|
|
|
|
badlen:
|
|
(void)printf(errfmt, __func__, msglen);
|
|
#undef REQUIRE
|
|
}
|
|
|
|
static void
|
|
print_getmsg(struct rt_msghdr *rtm, int msglen, int fib)
|
|
{
|
|
struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
|
|
struct sockaddr_dl *ifp = NULL;
|
|
struct sockaddr *sa;
|
|
char *cp;
|
|
int i;
|
|
|
|
(void) printf(" route to: %s\n",
|
|
routename((struct sockaddr *)&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;
|
|
}
|
|
cp += SA_SIZE(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 (fib >= 0)
|
|
(void)printf(" fib: %u\n", (unsigned int)fib);
|
|
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 mtu weight 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 ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
|
|
printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
|
|
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, msglen);
|
|
else if (rtm->rtm_addrs &~ RTA_IGN) {
|
|
(void) printf("sockaddrs: ");
|
|
bprintf(stdout, rtm->rtm_addrs, addrnames);
|
|
putchar('\n');
|
|
}
|
|
#undef RTA_IGN
|
|
}
|
|
|
|
static void
|
|
pmsg_common(struct rt_msghdr *rtm, size_t msglen)
|
|
{
|
|
(void) printf("\nlocks: ");
|
|
bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
|
|
(void) printf(" inits: ");
|
|
bprintf(stdout, rtm->rtm_inits, metricnames);
|
|
if (msglen > sizeof(struct rt_msghdr))
|
|
pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs,
|
|
msglen - sizeof(struct rt_msghdr));
|
|
else
|
|
(void) fflush(stdout);
|
|
}
|
|
|
|
static void
|
|
pmsg_addrs(char *cp, int addrs, size_t len)
|
|
{
|
|
struct sockaddr *sa;
|
|
int i;
|
|
|
|
if (addrs == 0) {
|
|
(void) putchar('\n');
|
|
return;
|
|
}
|
|
(void) printf("\nsockaddrs: ");
|
|
bprintf(stdout, addrs, addrnames);
|
|
(void) putchar('\n');
|
|
for (i = 1; i != 0; i <<= 1)
|
|
if (i & addrs) {
|
|
sa = (struct sockaddr *)cp;
|
|
if (len == 0 || len < SA_SIZE(sa)) {
|
|
(void) printf(errfmt, __func__, len);
|
|
break;
|
|
}
|
|
(void) printf(" %s", routename(sa));
|
|
len -= SA_SIZE(sa);
|
|
cp += SA_SIZE(sa);
|
|
}
|
|
(void) putchar('\n');
|
|
(void) fflush(stdout);
|
|
}
|
|
|
|
static void
|
|
bprintf(FILE *fp, int b, u_char *str)
|
|
{
|
|
int i;
|
|
int gotsome = 0;
|
|
|
|
if (b == 0)
|
|
return;
|
|
while ((i = *str++) != 0) {
|
|
if (b & (1 << (i-1))) {
|
|
if (gotsome == 0)
|
|
i = '<';
|
|
else
|
|
i = ',';
|
|
(void) putc(i, fp);
|
|
gotsome = 1;
|
|
for (; (i = *str) > 32; str++)
|
|
(void) putc(i, fp);
|
|
} else
|
|
while (*str > 32)
|
|
str++;
|
|
}
|
|
if (gotsome)
|
|
(void) putc('>', fp);
|
|
}
|
|
|
|
int
|
|
keyword(const char *cp)
|
|
{
|
|
struct keytab *kt = keywords;
|
|
|
|
while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
|
|
kt++;
|
|
return (kt->kt_i);
|
|
}
|
|
|
|
static void
|
|
sodump(sup su, const 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;
|
|
}
|
|
(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)
|
|
|
|
static void
|
|
sockaddr(char *addr, struct sockaddr *sa)
|
|
{
|
|
char *cp = (char *)sa;
|
|
int size = sa->sa_len;
|
|
char *cplim = cp + size;
|
|
int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
|
|
|
|
memset(cp, 0, 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;
|
|
}
|
|
|
|
static 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);
|
|
}
|
|
|
|
static 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);
|
|
}
|