178064Sume/* $KAME: rip6query.c,v 1.11 2001/05/08 04:36:37 itojun Exp $ */ 278064Sume 355163Sshin/* 455163Sshin * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 555163Sshin * All rights reserved. 662752Skris * 755163Sshin * Redistribution and use in source and binary forms, with or without 855163Sshin * modification, are permitted provided that the following conditions 955163Sshin * are met: 1055163Sshin * 1. Redistributions of source code must retain the above copyright 1155163Sshin * notice, this list of conditions and the following disclaimer. 1255163Sshin * 2. Redistributions in binary form must reproduce the above copyright 1355163Sshin * notice, this list of conditions and the following disclaimer in the 1455163Sshin * documentation and/or other materials provided with the distribution. 1555163Sshin * 3. Neither the name of the project nor the names of its contributors 1655163Sshin * may be used to endorse or promote products derived from this software 1755163Sshin * without specific prior written permission. 1862752Skris * 1955163Sshin * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 2055163Sshin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2155163Sshin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2255163Sshin * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2355163Sshin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2455163Sshin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2555163Sshin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2655163Sshin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2755163Sshin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2855163Sshin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2955163Sshin * SUCH DAMAGE. 3055163Sshin * 3155163Sshin * $FreeBSD$ 3255163Sshin */ 3355163Sshin 3455163Sshin#include <stdio.h> 3555163Sshin 3655163Sshin#include <unistd.h> 3755163Sshin#include <stdlib.h> 3855163Sshin#include <string.h> 3955163Sshin#include <ctype.h> 4055163Sshin#include <signal.h> 4162752Skris#include <errno.h> 4255163Sshin#include <err.h> 4355163Sshin 4455163Sshin#include <sys/types.h> 4555163Sshin#include <sys/socket.h> 4678064Sume#include <sys/queue.h> 4778064Sume 4855163Sshin#include <net/if.h> 4962752Skris#if defined(__FreeBSD__) && __FreeBSD__ >= 3 5055163Sshin#include <net/if_var.h> 5162752Skris#endif /* __FreeBSD__ >= 3 */ 5255163Sshin#include <netinet/in.h> 5355163Sshin#include <netinet/in_var.h> 5455163Sshin#include <arpa/inet.h> 5555163Sshin#include <netdb.h> 5655163Sshin 5755163Sshin#include "route6d.h" 5855163Sshin 59227258Sedstatic int s; 60227258Sedstatic struct sockaddr_in6 sin6; 61227258Sedstatic struct rip6 *ripbuf; 6255163Sshin 6355163Sshin#define RIPSIZE(n) (sizeof(struct rip6) + (n-1) * sizeof(struct netinfo6)) 6455163Sshin 65173412Skevloint main(int, char **); 66173412Skevlostatic void usage(void); 67173412Skevlostatic const char *sa_n2a(struct sockaddr *); 68173412Skevlostatic const char *inet6_n2a(struct in6_addr *); 6955163Sshin 7055163Sshinint 71201387Sedmain(int argc, char *argv[]) 7255163Sshin{ 7355163Sshin struct netinfo6 *np; 7455163Sshin struct sockaddr_in6 fsock; 75162489Skan int i, n, len; 7655163Sshin int c; 7755163Sshin int ifidx = -1; 7855163Sshin int error; 79162489Skan socklen_t flen; 8055163Sshin char pbuf[10]; 8155163Sshin struct addrinfo hints, *res; 8255163Sshin 8378064Sume while ((c = getopt(argc, argv, "I:")) != -1) { 8455163Sshin switch (c) { 8555163Sshin case 'I': 8655163Sshin ifidx = if_nametoindex(optarg); 8755163Sshin if (ifidx == 0) { 8855163Sshin errx(1, "invalid interface %s", optarg); 8955163Sshin /*NOTREACHED*/ 9055163Sshin } 9155163Sshin break; 9255163Sshin default: 9355163Sshin usage(); 9455163Sshin exit(1); 9555163Sshin /*NOTREACHED*/ 9655163Sshin } 9755163Sshin } 9855163Sshin argv += optind; 9955163Sshin argc -= optind; 10055163Sshin 10155163Sshin if (argc != 1) { 10255163Sshin usage(); 10378064Sume exit(1); 10455163Sshin } 10555163Sshin 10655163Sshin if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 10755163Sshin err(1, "socket"); 10855163Sshin /*NOTREACHED*/ 10955163Sshin } 11055163Sshin 11155163Sshin /* getaddrinfo is preferred for addr@ifname syntax */ 11255163Sshin snprintf(pbuf, sizeof(pbuf), "%d", RIP6_PORT); 11355163Sshin memset(&hints, 0, sizeof(hints)); 11455163Sshin hints.ai_family = AF_INET6; 11562752Skris hints.ai_socktype = SOCK_DGRAM; 11655163Sshin error = getaddrinfo(argv[0], pbuf, &hints, &res); 11755163Sshin if (error) { 11862752Skris errx(1, "%s: %s", argv[0], gai_strerror(error)); 11955163Sshin /*NOTREACHED*/ 12055163Sshin } 12155163Sshin if (res->ai_next) { 12255163Sshin errx(1, "%s: %s", argv[0], "resolved to multiple addrs"); 12355163Sshin /*NOTREACHED*/ 12455163Sshin } 12555163Sshin if (sizeof(sin6) != res->ai_addrlen) { 12655163Sshin errx(1, "%s: %s", argv[0], "invalid addrlen"); 12755163Sshin /*NOTREACHED*/ 12855163Sshin } 12955163Sshin memcpy(&sin6, res->ai_addr, res->ai_addrlen); 13055163Sshin if (ifidx >= 0) 13155163Sshin sin6.sin6_scope_id = ifidx; 13255163Sshin 13355163Sshin if ((ripbuf = (struct rip6 *)malloc(BUFSIZ)) == NULL) { 13455163Sshin err(1, "malloc"); 13555163Sshin /*NOTREACHED*/ 13655163Sshin } 13755163Sshin ripbuf->rip6_cmd = RIP6_REQUEST; 13855163Sshin ripbuf->rip6_vers = RIP6_VERSION; 13955163Sshin ripbuf->rip6_res1[0] = 0; 14055163Sshin ripbuf->rip6_res1[1] = 0; 14155163Sshin np = ripbuf->rip6_nets; 14255163Sshin bzero(&np->rip6_dest, sizeof(struct in6_addr)); 14355163Sshin np->rip6_tag = 0; 14455163Sshin np->rip6_plen = 0; 14555163Sshin np->rip6_metric = HOPCNT_INFINITY6; 14655163Sshin if (sendto(s, ripbuf, RIPSIZE(1), 0, (struct sockaddr *)&sin6, 14755163Sshin sizeof(struct sockaddr_in6)) < 0) { 14855163Sshin err(1, "send"); 14955163Sshin /*NOTREACHED*/ 15055163Sshin } 15155163Sshin do { 15255163Sshin flen = sizeof(fsock); 15355163Sshin if ((len = recvfrom(s, ripbuf, BUFSIZ, 0, 15455163Sshin (struct sockaddr *)&fsock, &flen)) < 0) { 15555163Sshin err(1, "recvfrom"); 15655163Sshin /*NOTREACHED*/ 15755163Sshin } 15855163Sshin printf("Response from %s len %d\n", 15955163Sshin sa_n2a((struct sockaddr *)&fsock), len); 16055163Sshin n = (len - sizeof(struct rip6) + sizeof(struct netinfo6)) / 16155163Sshin sizeof(struct netinfo6); 16255163Sshin np = ripbuf->rip6_nets; 16355163Sshin for (i = 0; i < n; i++, np++) { 16455163Sshin printf("\t%s/%d [%d]", inet6_n2a(&np->rip6_dest), 16555163Sshin np->rip6_plen, np->rip6_metric); 16655163Sshin if (np->rip6_tag) 16755163Sshin printf(" tag=0x%x", ntohs(np->rip6_tag)); 16855163Sshin printf("\n"); 16955163Sshin } 17055163Sshin } while (len == RIPSIZE(24)); 17155163Sshin 17255163Sshin exit(0); 17355163Sshin} 17455163Sshin 17555163Sshinstatic void 176201387Sedusage(void) 17755163Sshin{ 17895258Sdes fprintf(stderr, "usage: rip6query [-I iface] address\n"); 17955163Sshin} 18055163Sshin 18155163Sshin/* getnameinfo() is preferred as we may be able to show ifindex as ifname */ 18255163Sshinstatic const char * 183201387Sedsa_n2a(struct sockaddr *sa) 18455163Sshin{ 18562752Skris static char buf[NI_MAXHOST]; 18655163Sshin 18755163Sshin if (getnameinfo(sa, sa->sa_len, buf, sizeof(buf), 188146187Sume NULL, 0, NI_NUMERICHOST) != 0) { 18955163Sshin snprintf(buf, sizeof(buf), "%s", "(invalid)"); 19055163Sshin } 19155163Sshin return buf; 19255163Sshin} 19355163Sshin 19455163Sshinstatic const char * 195201387Sedinet6_n2a(struct in6_addr *addr) 19655163Sshin{ 19762752Skris static char buf[NI_MAXHOST]; 19855163Sshin 19955163Sshin return inet_ntop(AF_INET6, addr, buf, sizeof(buf)); 20055163Sshin} 201