1 /* 2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the project nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #include <stdio.h> 33 34 #include <unistd.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <ctype.h> 38 #include <signal.h> 39 #include <errno.h> 40 #include <err.h> 41 42 #include <sys/types.h> 43 #include <sys/socket.h> 44 #include <net/if.h> 45 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 46 #include <net/if_var.h> 47 #endif /* __FreeBSD__ >= 3 */ 48 #include <netinet/in.h> 49 #include <netinet/in_var.h> 50 #include <arpa/inet.h> 51 #include <netdb.h> 52 53 #include "route6d.h" 54 55 /* wrapper for KAME-special getnameinfo() */ 56 #ifndef NI_WITHSCOPEID 57 #define NI_WITHSCOPEID 0 58 #endif 59 60 int s; 61 struct sockaddr_in6 sin6; 62 struct rip6 *ripbuf; 63 64 #define RIPSIZE(n) (sizeof(struct rip6) + (n-1) * sizeof(struct netinfo6)) 65 66 int main __P((int, char **)); 67 static void usage __P((void)); 68 static const char *sa_n2a __P((struct sockaddr *)); 69 static const char *inet6_n2a __P((struct in6_addr *)); 70 71 int 72 main(argc, argv) 73 int argc; 74 char **argv; 75 { 76 struct netinfo6 *np; 77 struct sockaddr_in6 fsock; 78 int i, n, len, flen; 79 int c; 80 int ifidx = -1; 81 int error; 82 char pbuf[10]; 83 struct addrinfo hints, *res; 84 85 while ((c = getopt(argc, argv, "I:")) != EOF) { 86 switch (c) { 87 case 'I': 88 ifidx = if_nametoindex(optarg); 89 if (ifidx == 0) { 90 errx(1, "invalid interface %s", optarg); 91 /*NOTREACHED*/ 92 } 93 break; 94 default: 95 usage(); 96 exit(1); 97 /*NOTREACHED*/ 98 } 99 } 100 argv += optind; 101 argc -= optind; 102 103 if (argc != 1) { 104 usage(); 105 exit(-1); 106 } 107 108 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 109 err(1, "socket"); 110 /*NOTREACHED*/ 111 } 112 113 /* getaddrinfo is preferred for addr@ifname syntax */ 114 snprintf(pbuf, sizeof(pbuf), "%d", RIP6_PORT); 115 memset(&hints, 0, sizeof(hints)); 116 hints.ai_family = AF_INET6; 117 hints.ai_socktype = SOCK_DGRAM; 118 error = getaddrinfo(argv[0], pbuf, &hints, &res); 119 if (error) { 120 errx(1, "%s: %s", argv[0], gai_strerror(error)); 121 /*NOTREACHED*/ 122 } 123 if (res->ai_next) { 124 errx(1, "%s: %s", argv[0], "resolved to multiple addrs"); 125 /*NOTREACHED*/ 126 } 127 if (sizeof(sin6) != res->ai_addrlen) { 128 errx(1, "%s: %s", argv[0], "invalid addrlen"); 129 /*NOTREACHED*/ 130 } 131 memcpy(&sin6, res->ai_addr, res->ai_addrlen); 132 if (ifidx >= 0) 133 sin6.sin6_scope_id = ifidx; 134 135 if ((ripbuf = (struct rip6 *)malloc(BUFSIZ)) == NULL) { 136 err(1, "malloc"); 137 /*NOTREACHED*/ 138 } 139 ripbuf->rip6_cmd = RIP6_REQUEST; 140 ripbuf->rip6_vers = RIP6_VERSION; 141 ripbuf->rip6_res1[0] = 0; 142 ripbuf->rip6_res1[1] = 0; 143 np = ripbuf->rip6_nets; 144 bzero(&np->rip6_dest, sizeof(struct in6_addr)); 145 np->rip6_tag = 0; 146 np->rip6_plen = 0; 147 np->rip6_metric = HOPCNT_INFINITY6; 148 if (sendto(s, ripbuf, RIPSIZE(1), 0, (struct sockaddr *)&sin6, 149 sizeof(struct sockaddr_in6)) < 0) { 150 err(1, "send"); 151 /*NOTREACHED*/ 152 } 153 do { 154 flen = sizeof(fsock); 155 if ((len = recvfrom(s, ripbuf, BUFSIZ, 0, 156 (struct sockaddr *)&fsock, &flen)) < 0) { 157 err(1, "recvfrom"); 158 /*NOTREACHED*/ 159 } 160 printf("Response from %s len %d\n", 161 sa_n2a((struct sockaddr *)&fsock), len); 162 n = (len - sizeof(struct rip6) + sizeof(struct netinfo6)) / 163 sizeof(struct netinfo6); 164 np = ripbuf->rip6_nets; 165 for (i = 0; i < n; i++, np++) { 166 printf("\t%s/%d [%d]", inet6_n2a(&np->rip6_dest), 167 np->rip6_plen, np->rip6_metric); 168 if (np->rip6_tag) 169 printf(" tag=0x%x", ntohs(np->rip6_tag)); 170 printf("\n"); 171 } 172 } while (len == RIPSIZE(24)); 173 174 exit(0); 175 } 176 177 static void 178 usage() 179 { 180 fprintf(stderr, "Usage: rip6query [-I iface] address\n"); 181 } 182 183 /* getnameinfo() is preferred as we may be able to show ifindex as ifname */ 184 static const char * 185 sa_n2a(sa) 186 struct sockaddr *sa; 187 { 188 static char buf[NI_MAXHOST]; 189 190 if (getnameinfo(sa, sa->sa_len, buf, sizeof(buf), 191 NULL, 0, NI_NUMERICHOST | NI_WITHSCOPEID) != 0) { 192 snprintf(buf, sizeof(buf), "%s", "(invalid)"); 193 } 194 return buf; 195 } 196 197 static const char * 198 inet6_n2a(addr) 199 struct in6_addr *addr; 200 { 201 static char buf[NI_MAXHOST]; 202 203 return inet_ntop(AF_INET6, addr, buf, sizeof(buf)); 204 } 205