149 lines
4.3 KiB
C
149 lines
4.3 KiB
C
/* $NetBSD: rip6query.c,v 1.2 1999/07/06 13:14:54 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 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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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/socket.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 <netinet/in.h>
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#include <netinet/in_var.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include "route6d.h"
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int s;
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extern int errno;
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struct sockaddr_in6 sin6;
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struct rip6 *ripbuf;
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#define RIPSIZE(n) (sizeof(struct rip6) + (n-1) * sizeof(struct netinfo6))
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int main __P((int, char **));
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void fatal __P((char *));
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const char *inet6_n2a __P((struct in6_addr *));
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int main(argc, argv)
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int argc;
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char **argv;
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{
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struct netinfo6 *np;
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struct sockaddr_in6 fsock;
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struct hostent *hp;
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char *hostname;
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int i, n, len, flen;
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if (argc != 2) {
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fprintf(stderr, "Usage: %s address\n", *argv);
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exit(-1);
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}
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if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
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fatal("socket");
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hp = (struct hostent *)gethostbyname2(argv[1], AF_INET6);
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if (hp == NULL) {
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if (inet_pton(AF_INET6, argv[1], (u_int32_t *)&sin6.sin6_addr)
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!= 1) {
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fprintf(stderr, "%s: unknown host %s\n",
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argv[0], argv[1]);
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exit(-1);
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}
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} else {
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bcopy(hp->h_addr, (caddr_t)&sin6.sin6_addr, hp->h_length);
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hostname = strdup(hp->h_name);
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}
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sin6.sin6_len = sizeof(struct sockaddr_in6);
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sin6.sin6_family = AF_INET6;
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sin6.sin6_port = htons(RIP6_PORT);
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if ((ripbuf = (struct rip6 *)malloc(BUFSIZ)) == NULL)
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fatal("malloc");
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ripbuf->rip6_cmd = RIP6_REQUEST;
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ripbuf->rip6_vers = RIP6_VERSION;
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ripbuf->rip6_res1[0] = 0;
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ripbuf->rip6_res1[1] = 0;
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np = ripbuf->rip6_nets;
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bzero(&np->rip6_dest, sizeof(struct in6_addr));
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np->rip6_tag = 0;
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np->rip6_plen = 0;
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np->rip6_metric = HOPCNT_INFINITY6;
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if (sendto(s, ripbuf, RIPSIZE(1), 0,
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(struct sockaddr *)&sin6, sizeof(struct sockaddr_in6)) < 0)
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fatal("send");
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do {
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flen = sizeof(struct sockaddr_in6);
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if ((len = recvfrom(s, ripbuf, BUFSIZ, 0,
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(struct sockaddr *)&fsock, &flen)) < 0)
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fatal("recvfrom");
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printf("Response from %s len %d\n",
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inet6_n2a(&fsock.sin6_addr), len);
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n = (len - sizeof(struct rip6) + sizeof(struct netinfo6)) /
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sizeof(struct netinfo6);
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np = ripbuf->rip6_nets;
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for (i = 0; i < n; i++, np++) {
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printf("\t%s/%d [%d]", inet6_n2a(&np->rip6_dest),
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np->rip6_plen, np->rip6_metric);
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if (np->rip6_tag)
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printf(" tag=0x%x", ntohs(np->rip6_tag));
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printf("\n");
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}
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} while (len == RIPSIZE(24));
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exit(0);
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}
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void fatal(p)
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char *p;
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{
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fprintf(stderr, "%s: %s", p, strerror(errno));
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exit(-1);
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}
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const char *inet6_n2a(p)
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struct in6_addr *p;
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{
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static char buf[BUFSIZ];
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return inet_ntop(AF_INET6, (u_int32_t *)p, buf, sizeof(buf));
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}
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