rip6query.c revision 62752
155163Sshin/* 255163Sshin * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 355163Sshin * All rights reserved. 462752Skris * 555163Sshin * Redistribution and use in source and binary forms, with or without 655163Sshin * modification, are permitted provided that the following conditions 755163Sshin * are met: 855163Sshin * 1. Redistributions of source code must retain the above copyright 955163Sshin * notice, this list of conditions and the following disclaimer. 1055163Sshin * 2. Redistributions in binary form must reproduce the above copyright 1155163Sshin * notice, this list of conditions and the following disclaimer in the 1255163Sshin * documentation and/or other materials provided with the distribution. 1355163Sshin * 3. Neither the name of the project nor the names of its contributors 1455163Sshin * may be used to endorse or promote products derived from this software 1555163Sshin * without specific prior written permission. 1662752Skris * 1755163Sshin * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 1855163Sshin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1955163Sshin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2055163Sshin * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2155163Sshin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2255163Sshin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2355163Sshin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2455163Sshin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2555163Sshin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2655163Sshin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2755163Sshin * SUCH DAMAGE. 2855163Sshin * 2955163Sshin * $FreeBSD: head/usr.sbin/rip6query/rip6query.c 62752 2000-07-07 07:35:51Z kris $ 3055163Sshin */ 3155163Sshin 3255163Sshin#include <stdio.h> 3355163Sshin 3455163Sshin#include <unistd.h> 3555163Sshin#include <stdlib.h> 3655163Sshin#include <string.h> 3755163Sshin#include <ctype.h> 3855163Sshin#include <signal.h> 3962752Skris#include <errno.h> 4055163Sshin#include <err.h> 4155163Sshin 4255163Sshin#include <sys/types.h> 4355163Sshin#include <sys/socket.h> 4455163Sshin#include <net/if.h> 4562752Skris#if defined(__FreeBSD__) && __FreeBSD__ >= 3 4655163Sshin#include <net/if_var.h> 4762752Skris#endif /* __FreeBSD__ >= 3 */ 4855163Sshin#include <netinet/in.h> 4955163Sshin#include <netinet/in_var.h> 5055163Sshin#include <arpa/inet.h> 5155163Sshin#include <netdb.h> 5255163Sshin 5355163Sshin#include "route6d.h" 5455163Sshin 5555163Sshin/* wrapper for KAME-special getnameinfo() */ 5655163Sshin#ifndef NI_WITHSCOPEID 5762752Skris#define NI_WITHSCOPEID 0 5855163Sshin#endif 5955163Sshin 6055163Sshinint s; 6155163Sshinstruct sockaddr_in6 sin6; 6255163Sshinstruct rip6 *ripbuf; 6355163Sshin 6455163Sshin#define RIPSIZE(n) (sizeof(struct rip6) + (n-1) * sizeof(struct netinfo6)) 6555163Sshin 6655163Sshinint main __P((int, char **)); 6755163Sshinstatic void usage __P((void)); 6855163Sshinstatic const char *sa_n2a __P((struct sockaddr *)); 6955163Sshinstatic const char *inet6_n2a __P((struct in6_addr *)); 7055163Sshin 7155163Sshinint 7255163Sshinmain(argc, argv) 7355163Sshin int argc; 7455163Sshin char **argv; 7555163Sshin{ 7655163Sshin struct netinfo6 *np; 7755163Sshin struct sockaddr_in6 fsock; 7855163Sshin int i, n, len, flen; 7955163Sshin int c; 8055163Sshin int ifidx = -1; 8155163Sshin int error; 8255163Sshin char pbuf[10]; 8355163Sshin struct addrinfo hints, *res; 8455163Sshin 8555163Sshin while ((c = getopt(argc, argv, "I:")) != EOF) { 8655163Sshin switch (c) { 8755163Sshin case 'I': 8855163Sshin ifidx = if_nametoindex(optarg); 8955163Sshin if (ifidx == 0) { 9055163Sshin errx(1, "invalid interface %s", optarg); 9155163Sshin /*NOTREACHED*/ 9255163Sshin } 9355163Sshin break; 9455163Sshin default: 9555163Sshin usage(); 9655163Sshin exit(1); 9755163Sshin /*NOTREACHED*/ 9855163Sshin } 9955163Sshin } 10055163Sshin argv += optind; 10155163Sshin argc -= optind; 10255163Sshin 10355163Sshin if (argc != 1) { 10455163Sshin usage(); 10555163Sshin exit(-1); 10655163Sshin } 10755163Sshin 10855163Sshin if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 10955163Sshin err(1, "socket"); 11055163Sshin /*NOTREACHED*/ 11155163Sshin } 11255163Sshin 11355163Sshin /* getaddrinfo is preferred for addr@ifname syntax */ 11455163Sshin snprintf(pbuf, sizeof(pbuf), "%d", RIP6_PORT); 11555163Sshin memset(&hints, 0, sizeof(hints)); 11655163Sshin hints.ai_family = AF_INET6; 11762752Skris hints.ai_socktype = SOCK_DGRAM; 11855163Sshin error = getaddrinfo(argv[0], pbuf, &hints, &res); 11955163Sshin if (error) { 12062752Skris errx(1, "%s: %s", argv[0], gai_strerror(error)); 12155163Sshin /*NOTREACHED*/ 12255163Sshin } 12355163Sshin if (res->ai_next) { 12455163Sshin errx(1, "%s: %s", argv[0], "resolved to multiple addrs"); 12555163Sshin /*NOTREACHED*/ 12655163Sshin } 12755163Sshin if (sizeof(sin6) != res->ai_addrlen) { 12855163Sshin errx(1, "%s: %s", argv[0], "invalid addrlen"); 12955163Sshin /*NOTREACHED*/ 13055163Sshin } 13155163Sshin memcpy(&sin6, res->ai_addr, res->ai_addrlen); 13255163Sshin if (ifidx >= 0) 13355163Sshin sin6.sin6_scope_id = ifidx; 13455163Sshin 13555163Sshin if ((ripbuf = (struct rip6 *)malloc(BUFSIZ)) == NULL) { 13655163Sshin err(1, "malloc"); 13755163Sshin /*NOTREACHED*/ 13855163Sshin } 13955163Sshin ripbuf->rip6_cmd = RIP6_REQUEST; 14055163Sshin ripbuf->rip6_vers = RIP6_VERSION; 14155163Sshin ripbuf->rip6_res1[0] = 0; 14255163Sshin ripbuf->rip6_res1[1] = 0; 14355163Sshin np = ripbuf->rip6_nets; 14455163Sshin bzero(&np->rip6_dest, sizeof(struct in6_addr)); 14555163Sshin np->rip6_tag = 0; 14655163Sshin np->rip6_plen = 0; 14755163Sshin np->rip6_metric = HOPCNT_INFINITY6; 14855163Sshin if (sendto(s, ripbuf, RIPSIZE(1), 0, (struct sockaddr *)&sin6, 14955163Sshin sizeof(struct sockaddr_in6)) < 0) { 15055163Sshin err(1, "send"); 15155163Sshin /*NOTREACHED*/ 15255163Sshin } 15355163Sshin do { 15455163Sshin flen = sizeof(fsock); 15555163Sshin if ((len = recvfrom(s, ripbuf, BUFSIZ, 0, 15655163Sshin (struct sockaddr *)&fsock, &flen)) < 0) { 15755163Sshin err(1, "recvfrom"); 15855163Sshin /*NOTREACHED*/ 15955163Sshin } 16055163Sshin printf("Response from %s len %d\n", 16155163Sshin sa_n2a((struct sockaddr *)&fsock), len); 16255163Sshin n = (len - sizeof(struct rip6) + sizeof(struct netinfo6)) / 16355163Sshin sizeof(struct netinfo6); 16455163Sshin np = ripbuf->rip6_nets; 16555163Sshin for (i = 0; i < n; i++, np++) { 16655163Sshin printf("\t%s/%d [%d]", inet6_n2a(&np->rip6_dest), 16755163Sshin np->rip6_plen, np->rip6_metric); 16855163Sshin if (np->rip6_tag) 16955163Sshin printf(" tag=0x%x", ntohs(np->rip6_tag)); 17055163Sshin printf("\n"); 17155163Sshin } 17255163Sshin } while (len == RIPSIZE(24)); 17355163Sshin 17455163Sshin exit(0); 17555163Sshin} 17655163Sshin 17755163Sshinstatic void 17855163Sshinusage() 17955163Sshin{ 18055163Sshin fprintf(stderr, "Usage: rip6query [-I iface] address\n"); 18155163Sshin} 18255163Sshin 18355163Sshin/* getnameinfo() is preferred as we may be able to show ifindex as ifname */ 18455163Sshinstatic const char * 18555163Sshinsa_n2a(sa) 18655163Sshin struct sockaddr *sa; 18755163Sshin{ 18862752Skris static char buf[NI_MAXHOST]; 18955163Sshin 19055163Sshin if (getnameinfo(sa, sa->sa_len, buf, sizeof(buf), 19155163Sshin NULL, 0, NI_NUMERICHOST | NI_WITHSCOPEID) != 0) { 19255163Sshin snprintf(buf, sizeof(buf), "%s", "(invalid)"); 19355163Sshin } 19455163Sshin return buf; 19555163Sshin} 19655163Sshin 19755163Sshinstatic const char * 19855163Sshininet6_n2a(addr) 19955163Sshin struct in6_addr *addr; 20055163Sshin{ 20162752Skris static char buf[NI_MAXHOST]; 20255163Sshin 20355163Sshin return inet_ntop(AF_INET6, addr, buf, sizeof(buf)); 20455163Sshin} 205