1321 lines
30 KiB
C
1321 lines
30 KiB
C
/* $NetBSD: ndp.c,v 1.13 2001/02/08 07:37:18 itojun Exp $ */
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/* $KAME: ndp.c,v 1.56 2001/02/08 07:36:45 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
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* 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. Neither the name of the project 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 PROJECT 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 PROJECT 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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/*
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* Copyright (c) 1984, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Sun Microsystems, Inc.
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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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/*
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* Based on:
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* "@(#) Copyright (c) 1984, 1993\n\
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* The Regents of the University of California. All rights reserved.\n";
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*
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* "@(#)arp.c 8.2 (Berkeley) 1/2/94";
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*/
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/*
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* ndp - display, set, delete and flush neighbor cache
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*/
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#if defined(__FreeBSD__) && __FreeBSD__ >= 3
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#include <net/if_var.h>
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#endif /* __FreeBSD__ >= 3 */
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#ifndef __NetBSD__
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#include <netinet/if_ether.h>
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#endif
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#include <netinet/icmp6.h>
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#include <netinet6/in6_var.h>
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#include <netinet6/nd6.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <errno.h>
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#include <nlist.h>
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#include <stdio.h>
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#include <string.h>
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#include <paths.h>
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#include <err.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "gmt2local.h"
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#ifndef NI_WITHSCOPEID
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#define NI_WITHSCOPEID 0
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#endif
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/* packing rule for routing socket */
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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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static int pid;
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static int cflag;
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static int nflag;
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static int tflag;
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static int32_t thiszone; /* time difference with gmt */
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static int s = -1;
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static int repeat = 0;
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char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */
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char host_buf[NI_MAXHOST]; /* getnameinfo() */
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char ifix_buf[IFNAMSIZ]; /* if_indextoname() */
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int main __P((int, char **));
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int file __P((char *));
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void getsocket __P((void));
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int set __P((int, char **));
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void get __P((char *));
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int delete __P((char *));
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void dump __P((struct in6_addr *));
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static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr,
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int ifindex, int));
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static char *ether_str __P((struct sockaddr_dl *));
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int ndp_ether_aton __P((char *, u_char *));
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void usage __P((void));
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int rtmsg __P((int));
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void ifinfo __P((int, char **));
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void rtrlist __P((void));
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void plist __P((void));
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void pfx_flush __P((void));
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void rtrlist __P((void));
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void rtr_flush __P((void));
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void harmonize_rtr __P((void));
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#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
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static void getdefif __P((void));
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static void setdefif __P((char *));
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#endif
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static char *sec2str __P((time_t t));
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static char *ether_str __P((struct sockaddr_dl *sdl));
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static void ts_print __P((const struct timeval *));
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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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int aflag = 0, dflag = 0, sflag = 0, Hflag = 0,
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pflag = 0, rflag = 0, Pflag = 0, Rflag = 0;
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pid = getpid();
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thiszone = gmt2local(0);
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while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != EOF)
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switch ((char)ch) {
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case 'a':
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aflag = 1;
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break;
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case 'c':
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cflag = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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case 'I':
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#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
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if (argc > 2)
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setdefif(argv[2]);
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getdefif(); /* always call it to print the result */
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exit(0);
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#else
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errx(1, "not supported yet");
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/*NOTREACHED*/
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#endif
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case 'i' :
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argc -= optind;
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argv += optind;
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if (argc < 1)
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usage();
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ifinfo(argc, argv);
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exit(0);
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case 'n':
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nflag = 1;
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continue;
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case 'p':
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pflag = 1;
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break;
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case 'f' :
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if (argc != 3)
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usage();
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file(argv[2]);
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exit(0);
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case 'l' :
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/* obsolete, ignored */
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break;
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case 'r' :
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rflag = 1;
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break;
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case 's':
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sflag = 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 'A':
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aflag = 1;
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repeat = atoi(optarg);
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if (repeat < 0)
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usage();
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break;
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case 'H' :
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Hflag = 1;
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break;
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case 'P':
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Pflag = 1;
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break;
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case 'R':
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Rflag = 1;
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break;
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (aflag || cflag) {
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dump(0);
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exit(0);
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}
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if (dflag) {
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if (argc != 1)
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usage();
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delete(argv[0]);
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exit(0);
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}
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if (pflag) {
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plist();
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exit(0);
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}
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if (rflag) {
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rtrlist();
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exit(0);
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}
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if (sflag) {
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if (argc < 2 || argc > 4)
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usage();
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exit(set(argc, argv) ? 1 : 0);
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}
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if (Hflag) {
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harmonize_rtr();
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exit(0);
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}
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if (Pflag) {
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pfx_flush();
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exit(0);
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}
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if (Rflag) {
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rtr_flush();
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exit(0);
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}
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if (argc != 1)
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usage();
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get(argv[0]);
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exit(0);
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}
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/*
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* Process a file to set standard ndp entries
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*/
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int
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file(name)
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char *name;
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{
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FILE *fp;
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int i, retval;
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char line[100], arg[5][50], *args[5];
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if ((fp = fopen(name, "r")) == NULL) {
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fprintf(stderr, "ndp: cannot open %s\n", name);
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exit(1);
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}
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args[0] = &arg[0][0];
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args[1] = &arg[1][0];
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args[2] = &arg[2][0];
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args[3] = &arg[3][0];
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args[4] = &arg[4][0];
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retval = 0;
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while(fgets(line, 100, fp) != NULL) {
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i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2],
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arg[3], arg[4]);
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if (i < 2) {
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fprintf(stderr, "ndp: bad line: %s\n", line);
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retval = 1;
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continue;
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}
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if (set(i, args))
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retval = 1;
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}
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fclose(fp);
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return (retval);
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}
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void
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getsocket()
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{
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if (s < 0) {
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s = socket(PF_ROUTE, SOCK_RAW, 0);
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if (s < 0) {
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perror("ndp: socket");
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exit(1);
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}
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}
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}
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struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
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struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
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struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
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int expire_time, flags, found_entry;
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struct {
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struct rt_msghdr m_rtm;
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char m_space[512];
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} m_rtmsg;
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/*
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* Set an individual neighbor cache entry
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*/
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int
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set(argc, argv)
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int argc;
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char **argv;
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{
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register struct sockaddr_in6 *sin = &sin_m;
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register struct sockaddr_dl *sdl;
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register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
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struct addrinfo hints, *res;
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int gai_error;
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u_char *ea;
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char *host = argv[0], *eaddr = argv[1];
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getsocket();
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argc -= 2;
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argv += 2;
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sdl_m = blank_sdl;
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sin_m = blank_sin;
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bzero(&hints, sizeof(hints));
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hints.ai_family = AF_INET6;
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gai_error = getaddrinfo(host, NULL, &hints, &res);
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if (gai_error) {
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fprintf(stderr, "ndp: %s: %s\n", host,
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gai_strerror(gai_error));
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return 1;
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}
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sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
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#ifdef __KAME__
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if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
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*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
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htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
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}
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#endif
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ea = (u_char *)LLADDR(&sdl_m);
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if (ndp_ether_aton(eaddr, ea) == 0)
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sdl_m.sdl_alen = 6;
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flags = expire_time = 0;
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while (argc-- > 0) {
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if (strncmp(argv[0], "temp", 4) == 0) {
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struct timeval time;
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gettimeofday(&time, 0);
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expire_time = time.tv_sec + 20 * 60;
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} else if (strncmp(argv[0], "proxy", 5) == 0)
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flags |= RTF_ANNOUNCE;
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argv++;
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}
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if (rtmsg(RTM_GET) < 0) {
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perror(host);
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return (1);
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}
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sin = (struct sockaddr_in6 *)(rtm + 1);
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sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
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if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
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if (sdl->sdl_family == AF_LINK &&
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(rtm->rtm_flags & RTF_LLINFO) &&
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!(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) {
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case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
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case IFT_ISO88024: case IFT_ISO88025:
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goto overwrite;
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}
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/*
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* IPv4 arp command retries with sin_other = SIN_PROXY here.
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*/
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fprintf(stderr, "set: cannot configure a new entry\n");
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return 1;
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}
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overwrite:
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if (sdl->sdl_family != AF_LINK) {
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printf("cannot intuit interface index and type for %s\n", host);
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return (1);
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}
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sdl_m.sdl_type = sdl->sdl_type;
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sdl_m.sdl_index = sdl->sdl_index;
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return (rtmsg(RTM_ADD));
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}
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|
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/*
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* Display an individual neighbor cache entry
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*/
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void
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get(host)
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char *host;
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{
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struct sockaddr_in6 *sin = &sin_m;
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struct addrinfo hints, *res;
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int gai_error;
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sin_m = blank_sin;
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bzero(&hints, sizeof(hints));
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hints.ai_family = AF_INET6;
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gai_error = getaddrinfo(host, NULL, &hints, &res);
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if (gai_error) {
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fprintf(stderr, "ndp: %s: %s\n", host,
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gai_strerror(gai_error));
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return;
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}
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sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
|
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#ifdef __KAME__
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if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
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*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
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htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
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}
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#endif
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dump(&sin->sin6_addr);
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if (found_entry == 0) {
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getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
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sizeof(host_buf), NULL ,0,
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NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
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printf("%s (%s) -- no entry\n", host, host_buf);
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exit(1);
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|
}
|
|
}
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|
|
/*
|
|
* Delete a neighbor cache entry
|
|
*/
|
|
int
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delete(host)
|
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char *host;
|
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{
|
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struct sockaddr_in6 *sin = &sin_m;
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register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
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struct sockaddr_dl *sdl;
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struct addrinfo hints, *res;
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int gai_error;
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|
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getsocket();
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sin_m = blank_sin;
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|
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bzero(&hints, sizeof(hints));
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hints.ai_family = AF_INET6;
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gai_error = getaddrinfo(host, NULL, &hints, &res);
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if (gai_error) {
|
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fprintf(stderr, "ndp: %s: %s\n", host,
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gai_strerror(gai_error));
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return 1;
|
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}
|
|
sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
|
|
#ifdef __KAME__
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
|
|
*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
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htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
|
|
}
|
|
#endif
|
|
if (rtmsg(RTM_GET) < 0) {
|
|
perror(host);
|
|
return (1);
|
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}
|
|
sin = (struct sockaddr_in6 *)(rtm + 1);
|
|
sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
|
|
if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
|
|
if (sdl->sdl_family == AF_LINK &&
|
|
(rtm->rtm_flags & RTF_LLINFO) &&
|
|
!(rtm->rtm_flags & RTF_GATEWAY)) {
|
|
goto delete;
|
|
}
|
|
/*
|
|
* IPv4 arp command retries with sin_other = SIN_PROXY here.
|
|
*/
|
|
fprintf(stderr, "delete: cannot delete non-NDP entry\n");
|
|
return 1;
|
|
}
|
|
|
|
delete:
|
|
if (sdl->sdl_family != AF_LINK) {
|
|
printf("cannot locate %s\n", host);
|
|
return (1);
|
|
}
|
|
if (rtmsg(RTM_DELETE) == 0) {
|
|
struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
|
|
|
|
#ifdef __KAME__
|
|
if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
|
|
s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
|
|
*(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
|
|
}
|
|
#endif
|
|
getnameinfo((struct sockaddr *)&s6,
|
|
s6.sin6_len, host_buf,
|
|
sizeof(host_buf), NULL, 0,
|
|
NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
|
|
printf("%s (%s) deleted\n", host, host_buf);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define W_ADDR 31
|
|
#define W_LL 17
|
|
#define W_IF 6
|
|
|
|
/*
|
|
* Dump the entire neighbor cache
|
|
*/
|
|
void
|
|
dump(addr)
|
|
struct in6_addr *addr;
|
|
{
|
|
int mib[6];
|
|
size_t needed;
|
|
char *lim, *buf, *next;
|
|
struct rt_msghdr *rtm;
|
|
struct sockaddr_in6 *sin;
|
|
struct sockaddr_dl *sdl;
|
|
extern int h_errno;
|
|
struct in6_nbrinfo *nbi;
|
|
struct timeval time;
|
|
int addrwidth;
|
|
int llwidth;
|
|
int ifwidth;
|
|
char flgbuf[8];
|
|
|
|
/* Print header */
|
|
if (!tflag && !cflag)
|
|
printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n",
|
|
W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
|
|
W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs");
|
|
|
|
again:;
|
|
mib[0] = CTL_NET;
|
|
mib[1] = PF_ROUTE;
|
|
mib[2] = 0;
|
|
mib[3] = AF_INET6;
|
|
mib[4] = NET_RT_FLAGS;
|
|
mib[5] = RTF_LLINFO;
|
|
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
|
|
err(1, "sysctl(PF_ROUTE estimate)");
|
|
if (needed > 0) {
|
|
if ((buf = malloc(needed)) == NULL)
|
|
errx(1, "malloc");
|
|
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
|
|
err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
|
|
lim = buf + needed;
|
|
} else
|
|
buf = lim = NULL;
|
|
|
|
for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
|
|
int isrouter = 0, prbs = 0;
|
|
|
|
rtm = (struct rt_msghdr *)next;
|
|
sin = (struct sockaddr_in6 *)(rtm + 1);
|
|
sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
|
|
if (addr) {
|
|
if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
|
|
continue;
|
|
found_entry = 1;
|
|
} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
|
|
continue;
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
|
|
IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
|
|
/* XXX: should scope id be filled in the kernel? */
|
|
if (sin->sin6_scope_id == 0)
|
|
sin->sin6_scope_id = sdl->sdl_index;
|
|
#ifdef __KAME__
|
|
/* KAME specific hack; removed the embedded id */
|
|
*(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
|
|
#endif
|
|
}
|
|
getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
|
|
sizeof(host_buf), NULL, 0,
|
|
NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
|
|
if (cflag == 1) {
|
|
delete(host_buf);
|
|
continue;
|
|
}
|
|
gettimeofday(&time, 0);
|
|
if (tflag)
|
|
ts_print(&time);
|
|
|
|
addrwidth = strlen(host_buf);
|
|
if (addrwidth < W_ADDR)
|
|
addrwidth = W_ADDR;
|
|
llwidth = strlen(ether_str(sdl));
|
|
if (W_ADDR + W_LL - addrwidth > llwidth)
|
|
llwidth = W_ADDR + W_LL - addrwidth;
|
|
ifwidth = strlen(if_indextoname(sdl->sdl_index,
|
|
ifix_buf));
|
|
if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
|
|
ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
|
|
|
|
printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
|
|
llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth,
|
|
if_indextoname(sdl->sdl_index, ifix_buf));
|
|
|
|
/* Print neighbor discovery specific informations */
|
|
nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
|
|
if (nbi) {
|
|
if (nbi->expire > time.tv_sec) {
|
|
printf(" %-9.9s",
|
|
sec2str(nbi->expire - time.tv_sec));
|
|
} else if (nbi->expire == 0)
|
|
printf(" %-9.9s", "permanent");
|
|
else
|
|
printf(" %-9.9s", "expired");
|
|
|
|
switch(nbi->state) {
|
|
case ND6_LLINFO_NOSTATE:
|
|
printf(" N");
|
|
break;
|
|
#ifdef ND6_LLINFO_WAITDELETE
|
|
case ND6_LLINFO_WAITDELETE:
|
|
printf(" W");
|
|
break;
|
|
#endif
|
|
case ND6_LLINFO_INCOMPLETE:
|
|
printf(" I");
|
|
break;
|
|
case ND6_LLINFO_REACHABLE:
|
|
printf(" R");
|
|
break;
|
|
case ND6_LLINFO_STALE:
|
|
printf(" S");
|
|
break;
|
|
case ND6_LLINFO_DELAY:
|
|
printf(" D");
|
|
break;
|
|
case ND6_LLINFO_PROBE:
|
|
printf(" P");
|
|
break;
|
|
default:
|
|
printf(" ?");
|
|
break;
|
|
}
|
|
|
|
isrouter = nbi->isrouter;
|
|
prbs = nbi->asked;
|
|
} else {
|
|
warnx("failed to get neighbor information");
|
|
printf(" ");
|
|
}
|
|
putchar(' ');
|
|
|
|
/*
|
|
* other flags. R: router, P: proxy, W: ??
|
|
*/
|
|
if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
|
|
snprintf(flgbuf, sizeof(flgbuf), "%s%s",
|
|
isrouter ? "R" : "",
|
|
(rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
|
|
} else {
|
|
sin = (struct sockaddr_in6 *)
|
|
(sdl->sdl_len + (char *)sdl);
|
|
snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
|
|
isrouter ? "R" : "",
|
|
!IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr)
|
|
? "P" : "",
|
|
(sin->sin6_len != sizeof(struct sockaddr_in6))
|
|
? "W" : "",
|
|
(rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
|
|
}
|
|
printf(" %-4.4s", flgbuf);
|
|
|
|
if (prbs)
|
|
printf(" %4d", prbs);
|
|
|
|
printf("\n");
|
|
}
|
|
if (buf != NULL)
|
|
free(buf);
|
|
|
|
if (repeat) {
|
|
printf("\n");
|
|
sleep(repeat);
|
|
goto again;
|
|
}
|
|
}
|
|
|
|
static struct in6_nbrinfo *
|
|
getnbrinfo(addr, ifindex, warning)
|
|
struct in6_addr *addr;
|
|
int ifindex;
|
|
int warning;
|
|
{
|
|
static struct in6_nbrinfo nbi;
|
|
int s;
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
|
|
err(1, "socket");
|
|
|
|
bzero(&nbi, sizeof(nbi));
|
|
if_indextoname(ifindex, nbi.ifname);
|
|
nbi.addr = *addr;
|
|
if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
|
|
if (warning)
|
|
warn("ioctl(SIOCGNBRINFO_IN6)");
|
|
close(s);
|
|
return(NULL);
|
|
}
|
|
|
|
close(s);
|
|
return(&nbi);
|
|
}
|
|
|
|
static char *
|
|
ether_str(sdl)
|
|
struct sockaddr_dl *sdl;
|
|
{
|
|
static char ebuf[32];
|
|
u_char *cp;
|
|
|
|
if (sdl->sdl_alen) {
|
|
cp = (u_char *)LLADDR(sdl);
|
|
sprintf(ebuf, "%x:%x:%x:%x:%x:%x",
|
|
cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
|
|
} else {
|
|
sprintf(ebuf, "(incomplete)");
|
|
}
|
|
|
|
return(ebuf);
|
|
}
|
|
|
|
int
|
|
ndp_ether_aton(a, n)
|
|
char *a;
|
|
u_char *n;
|
|
{
|
|
int i, o[6];
|
|
|
|
i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
|
|
&o[3], &o[4], &o[5]);
|
|
if (i != 6) {
|
|
fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
|
|
return (1);
|
|
}
|
|
for (i=0; i<6; i++)
|
|
n[i] = o[i];
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
printf("usage: ndp hostname\n");
|
|
printf(" ndp -a[nt]\n");
|
|
printf(" ndp [-nt] -A wait\n");
|
|
printf(" ndp -c[nt]\n");
|
|
printf(" ndp -d[nt] hostname\n");
|
|
printf(" ndp -f[nt] filename\n");
|
|
printf(" ndp -i interface [flags...]\n");
|
|
#ifdef SIOCSDEFIFACE_IN6
|
|
printf(" ndp -I [interface|delete]\n");
|
|
#endif
|
|
printf(" ndp -p\n");
|
|
printf(" ndp -r\n");
|
|
printf(" ndp -s hostname ether_addr [temp] [proxy]\n");
|
|
printf(" ndp -H\n");
|
|
printf(" ndp -P\n");
|
|
printf(" ndp -R\n");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
rtmsg(cmd)
|
|
int cmd;
|
|
{
|
|
static int seq;
|
|
int rlen;
|
|
register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
|
|
register char *cp = m_rtmsg.m_space;
|
|
register int l;
|
|
|
|
errno = 0;
|
|
if (cmd == RTM_DELETE)
|
|
goto doit;
|
|
bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
|
|
rtm->rtm_flags = flags;
|
|
rtm->rtm_version = RTM_VERSION;
|
|
|
|
switch (cmd) {
|
|
default:
|
|
fprintf(stderr, "ndp: internal wrong cmd\n");
|
|
exit(1);
|
|
case RTM_ADD:
|
|
rtm->rtm_addrs |= RTA_GATEWAY;
|
|
rtm->rtm_rmx.rmx_expire = expire_time;
|
|
rtm->rtm_inits = RTV_EXPIRE;
|
|
rtm->rtm_flags |= (RTF_HOST | RTF_STATIC);
|
|
if (rtm->rtm_flags & RTF_ANNOUNCE) {
|
|
rtm->rtm_flags &= ~RTF_HOST;
|
|
rtm->rtm_flags |= RTA_NETMASK;
|
|
}
|
|
/* FALLTHROUGH */
|
|
case RTM_GET:
|
|
rtm->rtm_addrs |= RTA_DST;
|
|
}
|
|
#define NEXTADDR(w, s) \
|
|
if (rtm->rtm_addrs & (w)) { \
|
|
bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);}
|
|
|
|
NEXTADDR(RTA_DST, sin_m);
|
|
NEXTADDR(RTA_GATEWAY, sdl_m);
|
|
memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
|
|
NEXTADDR(RTA_NETMASK, so_mask);
|
|
|
|
rtm->rtm_msglen = cp - (char *)&m_rtmsg;
|
|
doit:
|
|
l = rtm->rtm_msglen;
|
|
rtm->rtm_seq = ++seq;
|
|
rtm->rtm_type = cmd;
|
|
if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
|
|
if (errno != ESRCH || cmd != RTM_DELETE) {
|
|
perror("writing to routing socket");
|
|
return (-1);
|
|
}
|
|
}
|
|
do {
|
|
l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
|
|
} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
|
|
if (l < 0)
|
|
(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
|
|
strerror(errno));
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ifinfo(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
struct in6_ndireq nd;
|
|
int i, s;
|
|
char *ifname = argv[0];
|
|
u_int32_t newflags;
|
|
#ifdef IPV6CTL_USETEMPADDR
|
|
u_int8_t nullbuf[8];
|
|
#endif
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
|
|
perror("ndp: socket");
|
|
exit(1);
|
|
}
|
|
bzero(&nd, sizeof(nd));
|
|
strcpy(nd.ifname, ifname);
|
|
if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
|
|
perror("ioctl (SIOCGIFINFO_IN6)");
|
|
exit(1);
|
|
}
|
|
#define ND nd.ndi
|
|
newflags = ND.flags;
|
|
for (i = 1; i < argc; i++) {
|
|
int clear = 0;
|
|
char *cp = argv[i];
|
|
|
|
if (*cp == '-') {
|
|
clear = 1;
|
|
cp++;
|
|
}
|
|
|
|
#define SETFLAG(s, f) \
|
|
do {\
|
|
if (strcmp(cp, (s)) == 0) {\
|
|
if (clear)\
|
|
newflags &= ~(f);\
|
|
else\
|
|
newflags |= (f);\
|
|
}\
|
|
} while (0)
|
|
SETFLAG("nud", ND6_IFF_PERFORMNUD);
|
|
|
|
ND.flags = newflags;
|
|
if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) {
|
|
perror("ioctl(SIOCSIFINFO_FLAGS)");
|
|
exit(1);
|
|
}
|
|
#undef SETFLAG
|
|
}
|
|
|
|
printf("linkmtu=%d", ND.linkmtu);
|
|
printf(", curhlim=%d", ND.chlim);
|
|
printf(", basereachable=%ds%dms",
|
|
ND.basereachable / 1000, ND.basereachable % 1000);
|
|
printf(", reachable=%ds", ND.reachable);
|
|
printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
|
|
#ifdef IPV6CTL_USETEMPADDR
|
|
memset(nullbuf, 0, sizeof(nullbuf));
|
|
if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
|
|
int j;
|
|
u_int8_t *rbuf;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
switch(i) {
|
|
case 0:
|
|
printf("\nRandom seed(0): ");
|
|
rbuf = ND.randomseed0;
|
|
break;
|
|
case 1:
|
|
printf("\nRandom seed(1): ");
|
|
rbuf = ND.randomseed1;
|
|
break;
|
|
case 2:
|
|
printf("\nRandom ID: ");
|
|
rbuf = ND.randomid;
|
|
break;
|
|
}
|
|
for (j = 0; j < 8; j++)
|
|
printf("%02x", rbuf[j]);
|
|
}
|
|
}
|
|
#endif
|
|
if (ND.flags) {
|
|
printf("\nFlags: ");
|
|
if ((ND.flags & ND6_IFF_PERFORMNUD) != 0)
|
|
printf("PERFORMNUD ");
|
|
}
|
|
putc('\n', stdout);
|
|
#undef ND
|
|
|
|
close(s);
|
|
}
|
|
|
|
void
|
|
rtrlist()
|
|
{
|
|
struct in6_drlist dr;
|
|
int s, i;
|
|
struct timeval time;
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
|
|
perror("ndp: socket");
|
|
exit(1);
|
|
}
|
|
bzero(&dr, sizeof(dr));
|
|
strcpy(dr.ifname, "lo0"); /* dummy */
|
|
if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
|
|
perror("ioctl (SIOCGDRLST_IN6)");
|
|
exit(1);
|
|
}
|
|
#define DR dr.defrouter[i]
|
|
for (i = 0 ; DR.if_index && i < PRLSTSIZ ; i++) {
|
|
struct sockaddr_in6 sin6;
|
|
|
|
bzero(&sin6, sizeof(sin6));
|
|
sin6.sin6_family = AF_INET6;
|
|
sin6.sin6_len = sizeof(sin6);
|
|
sin6.sin6_addr = DR.rtaddr;
|
|
getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
|
|
sizeof(host_buf), NULL, 0,
|
|
NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
|
|
|
|
printf("%s if=%s", host_buf,
|
|
if_indextoname(DR.if_index, ifix_buf));
|
|
printf(", flags=%s%s",
|
|
DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
|
|
DR.flags & ND_RA_FLAG_OTHER ? "O" : "");
|
|
gettimeofday(&time, 0);
|
|
if (DR.expire == 0)
|
|
printf(", expire=Never\n");
|
|
else
|
|
printf(", expire=%s\n",
|
|
sec2str(DR.expire - time.tv_sec));
|
|
}
|
|
#undef DR
|
|
close(s);
|
|
}
|
|
|
|
void
|
|
plist()
|
|
{
|
|
struct in6_prlist pr;
|
|
int s, i;
|
|
struct timeval time;
|
|
|
|
gettimeofday(&time, 0);
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
|
|
perror("ndp: socket");
|
|
exit(1);
|
|
}
|
|
bzero(&pr, sizeof(pr));
|
|
strcpy(pr.ifname, "lo0"); /* dummy */
|
|
if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
|
|
perror("ioctl (SIOCGPRLST_IN6)");
|
|
exit(1);
|
|
}
|
|
#define PR pr.prefix[i]
|
|
for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
|
|
struct sockaddr_in6 p6;
|
|
char namebuf[NI_MAXHOST];
|
|
int niflags;
|
|
|
|
#ifdef NDPRF_ONLINK
|
|
p6 = PR.prefix;
|
|
#else
|
|
memset(&p6, 0, sizeof(p6));
|
|
p6.sin6_family = AF_INET6;
|
|
p6.sin6_len = sizeof(p6);
|
|
p6.sin6_addr = PR.prefix;
|
|
#endif
|
|
|
|
/*
|
|
* copy link index to sin6_scope_id field.
|
|
* XXX: KAME specific.
|
|
*/
|
|
if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
|
|
u_int16_t linkid;
|
|
|
|
memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
|
|
sizeof(linkid));
|
|
linkid = ntohs(linkid);
|
|
p6.sin6_scope_id = linkid;
|
|
p6.sin6_addr.s6_addr[2] = 0;
|
|
p6.sin6_addr.s6_addr[3] = 0;
|
|
}
|
|
|
|
niflags = NI_NUMERICHOST;
|
|
#ifdef __KAME__
|
|
niflags |= NI_WITHSCOPEID;
|
|
#endif
|
|
if (getnameinfo((struct sockaddr *)&p6,
|
|
sizeof(p6), namebuf, sizeof(namebuf),
|
|
NULL, 0, niflags)) {
|
|
warnx("getnameinfo failed");
|
|
continue;
|
|
}
|
|
printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
|
|
if_indextoname(PR.if_index, ifix_buf));
|
|
|
|
gettimeofday(&time, 0);
|
|
/*
|
|
* meaning of fields, especially flags, is very different
|
|
* by origin. notify the difference to the users.
|
|
*/
|
|
printf(" %s", PR.origin == PR_ORIG_RA ? "" : "advertise: ");
|
|
#ifdef NDPRF_ONLINK
|
|
printf("flags=%s%s%s%s",
|
|
PR.raflags.onlink ? "L" : "",
|
|
PR.raflags.autonomous ? "A" : "",
|
|
(PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
|
|
(PR.flags & NDPRF_DETACHED) != 0 ? "D" : "");
|
|
#else
|
|
printf("flags=%s%s",
|
|
PR.raflags.onlink ? "L" : "",
|
|
PR.raflags.autonomous ? "A" : "");
|
|
#endif
|
|
if (PR.vltime == ND6_INFINITE_LIFETIME)
|
|
printf(" vltime=infinity");
|
|
else
|
|
printf(" vltime=%ld", (long)PR.vltime);
|
|
if (PR.pltime == ND6_INFINITE_LIFETIME)
|
|
printf(", pltime=infinity");
|
|
else
|
|
printf(", pltime=%ld", (long)PR.pltime);
|
|
if (PR.expire == 0)
|
|
printf(", expire=Never");
|
|
else if (PR.expire >= time.tv_sec)
|
|
printf(", expire=%s",
|
|
sec2str(PR.expire - time.tv_sec));
|
|
else
|
|
printf(", expired");
|
|
#ifdef NDPRF_ONLINK
|
|
printf(", ref=%d", PR.refcnt);
|
|
#endif
|
|
switch (PR.origin) {
|
|
case PR_ORIG_RA:
|
|
printf(", origin=RA");
|
|
break;
|
|
case PR_ORIG_RR:
|
|
printf(", origin=RR");
|
|
break;
|
|
case PR_ORIG_STATIC:
|
|
printf(", origin=static");
|
|
break;
|
|
case PR_ORIG_KERNEL:
|
|
printf(", origin=kernel");
|
|
break;
|
|
default:
|
|
printf(", origin=?");
|
|
break;
|
|
}
|
|
printf("\n");
|
|
/*
|
|
* "advertising router" list is meaningful only if the prefix
|
|
* information is from RA.
|
|
*/
|
|
if (PR.origin != PR_ORIG_RA)
|
|
;
|
|
else if (PR.advrtrs) {
|
|
int j;
|
|
printf(" advertised by\n");
|
|
for (j = 0; j < PR.advrtrs; j++) {
|
|
struct sockaddr_in6 sin6;
|
|
struct in6_nbrinfo *nbi;
|
|
|
|
bzero(&sin6, sizeof(sin6));
|
|
sin6.sin6_family = AF_INET6;
|
|
sin6.sin6_len = sizeof(sin6);
|
|
sin6.sin6_addr = PR.advrtr[j];
|
|
sin6.sin6_scope_id = PR.if_index; /* XXX */
|
|
getnameinfo((struct sockaddr *)&sin6,
|
|
sin6.sin6_len, host_buf,
|
|
sizeof(host_buf), NULL, 0,
|
|
NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
|
|
printf(" %s", host_buf);
|
|
|
|
nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index,
|
|
0);
|
|
if (nbi) {
|
|
switch(nbi->state) {
|
|
case ND6_LLINFO_REACHABLE:
|
|
case ND6_LLINFO_STALE:
|
|
case ND6_LLINFO_DELAY:
|
|
case ND6_LLINFO_PROBE:
|
|
printf(" (reachable)\n");
|
|
break;
|
|
default:
|
|
printf(" (unreachable)\n");
|
|
}
|
|
} else
|
|
printf(" (no neighbor state)\n");
|
|
}
|
|
if (PR.advrtrs > DRLSTSIZ)
|
|
printf(" and %d routers\n",
|
|
PR.advrtrs - DRLSTSIZ);
|
|
} else
|
|
printf(" No advertising router\n");
|
|
}
|
|
#undef PR
|
|
close(s);
|
|
}
|
|
|
|
void
|
|
pfx_flush()
|
|
{
|
|
char dummyif[IFNAMSIZ+8];
|
|
int s;
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
|
|
err(1, "socket");
|
|
strcpy(dummyif, "lo0"); /* dummy */
|
|
if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
|
|
err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
|
|
}
|
|
|
|
void
|
|
rtr_flush()
|
|
{
|
|
char dummyif[IFNAMSIZ+8];
|
|
int s;
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
|
|
err(1, "socket");
|
|
strcpy(dummyif, "lo0"); /* dummy */
|
|
if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
|
|
err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
|
|
|
|
close(s);
|
|
}
|
|
|
|
void
|
|
harmonize_rtr()
|
|
{
|
|
char dummyif[IFNAMSIZ+8];
|
|
int s;
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
|
|
err(1, "socket");
|
|
strcpy(dummyif, "lo0"); /* dummy */
|
|
if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
|
|
err(1, "ioctl (SIOCSNDFLUSH_IN6)");
|
|
|
|
close(s);
|
|
}
|
|
|
|
#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
|
|
static void
|
|
setdefif(ifname)
|
|
char *ifname;
|
|
{
|
|
struct in6_ndifreq ndifreq;
|
|
unsigned int ifindex;
|
|
|
|
if (strcasecmp(ifname, "delete") == 0)
|
|
ifindex = 0;
|
|
else {
|
|
if ((ifindex = if_nametoindex(ifname)) == 0)
|
|
err(1, "failed to resolve i/f index for %s", ifname);
|
|
}
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
|
|
err(1, "socket");
|
|
|
|
strcpy(ndifreq.ifname, "lo0"); /* dummy */
|
|
ndifreq.ifindex = ifindex;
|
|
|
|
if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
|
|
err(1, "ioctl (SIOCSDEFIFACE_IN6)");
|
|
|
|
close(s);
|
|
}
|
|
|
|
static void
|
|
getdefif()
|
|
{
|
|
struct in6_ndifreq ndifreq;
|
|
char ifname[IFNAMSIZ+8];
|
|
|
|
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
|
|
err(1, "socket");
|
|
|
|
memset(&ndifreq, 0, sizeof(ndifreq));
|
|
strcpy(ndifreq.ifname, "lo0"); /* dummy */
|
|
|
|
if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
|
|
err(1, "ioctl (SIOCGDEFIFACE_IN6)");
|
|
|
|
if (ndifreq.ifindex == 0)
|
|
printf("No default interface.\n");
|
|
else {
|
|
if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
|
|
err(1, "failed to resolve ifname for index %lu",
|
|
ndifreq.ifindex);
|
|
printf("ND default interface = %s\n", ifname);
|
|
}
|
|
|
|
close(s);
|
|
}
|
|
#endif
|
|
|
|
static char *
|
|
sec2str(total)
|
|
time_t total;
|
|
{
|
|
static char result[256];
|
|
int days, hours, mins, secs;
|
|
int first = 1;
|
|
char *p = result;
|
|
|
|
days = total / 3600 / 24;
|
|
hours = (total / 3600) % 24;
|
|
mins = (total / 60) % 60;
|
|
secs = total % 60;
|
|
|
|
if (days) {
|
|
first = 0;
|
|
p += sprintf(p, "%dd", days);
|
|
}
|
|
if (!first || hours) {
|
|
first = 0;
|
|
p += sprintf(p, "%dh", hours);
|
|
}
|
|
if (!first || mins) {
|
|
first = 0;
|
|
p += sprintf(p, "%dm", mins);
|
|
}
|
|
sprintf(p, "%ds", secs);
|
|
|
|
return(result);
|
|
}
|
|
|
|
/*
|
|
* Print the timestamp
|
|
* from tcpdump/util.c
|
|
*/
|
|
static void
|
|
ts_print(tvp)
|
|
const struct timeval *tvp;
|
|
{
|
|
int s;
|
|
|
|
/* Default */
|
|
s = (tvp->tv_sec + thiszone) % 86400;
|
|
(void)printf("%02d:%02d:%02d.%06u ",
|
|
s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
|
|
}
|