1 /* $NetBSD: ifmcstat.c,v 1.12 2013/10/19 17:16:25 christos Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <fcntl.h> 35 #include <kvm.h> 36 #include <nlist.h> 37 #include <string.h> 38 #include <limits.h> 39 40 #include <sys/types.h> 41 #include <sys/socket.h> 42 #include <net/if.h> 43 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 44 # include <net/if_var.h> 45 #endif 46 #include <net/if_types.h> 47 #include <net/if_dl.h> 48 #include <netinet/in.h> 49 #ifndef __NetBSD__ 50 # ifdef __FreeBSD__ 51 # define KERNEL 52 # endif 53 # include <netinet/if_ether.h> 54 # ifdef __FreeBSD__ 55 # undef KERNEL 56 # endif 57 #else 58 # include <net/if_ether.h> 59 #endif 60 #include <netinet/in_var.h> 61 #include <arpa/inet.h> 62 63 #include <netdb.h> 64 65 kvm_t *kvmd; 66 67 struct nlist nl[] = { 68 #define N_IFNET 0 69 { "_ifnet", 0, 0, 0, 0 }, 70 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 71 #define N_IN6_MK 1 72 { "_in6_mk", 0, 0, 0, 0 }, 73 #endif 74 { "", 0, 0, 0, 0 }, 75 }; 76 77 const char *inet6_n2a __P((struct in6_addr *)); 78 int main __P((void)); 79 char *ifname __P((struct ifnet *)); 80 void kread __P((u_long, void *, int)); 81 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 82 void acmc __P((struct ether_multi *)); 83 #endif 84 void if6_addrlist __P((struct ifaddr *)); 85 void in6_multilist __P((struct in6_multi *)); 86 struct in6_multi * in6_multientry __P((struct in6_multi *)); 87 88 #if !defined(__NetBSD__) && !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__) 89 #ifdef __bsdi__ 90 struct ether_addr { 91 u_int8_t ether_addr_octet[6]; 92 }; 93 #endif 94 static char *ether_ntoa __P((struct ether_addr *)); 95 #endif 96 97 #define KREAD(addr, buf, type) \ 98 kread((u_long)addr, (void *)buf, sizeof(type)) 99 100 #ifdef N_IN6_MK 101 struct multi6_kludge { 102 LIST_ENTRY(multi6_kludge) mk_entry; 103 struct ifnet *mk_ifp; 104 struct in6_multihead mk_head; 105 }; 106 #endif 107 108 const char *inet6_n2a(p) 109 struct in6_addr *p; 110 { 111 static char buf[NI_MAXHOST]; 112 struct sockaddr_in6 sin6; 113 const int niflags = NI_NUMERICHOST; 114 115 memset(&sin6, 0, sizeof(sin6)); 116 sin6.sin6_family = AF_INET6; 117 sin6.sin6_len = sizeof(struct sockaddr_in6); 118 sin6.sin6_addr = *p; 119 inet6_getscopeid(&sin6, INET6_IS_ADDR_LINKLOCAL| 120 INET6_IS_ADDR_MC_LINKLOCAL); 121 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 122 buf, sizeof(buf), NULL, 0, niflags) == 0) 123 return buf; 124 else 125 return "(invalid)"; 126 } 127 128 int main() 129 { 130 char buf[_POSIX2_LINE_MAX], ifnam[IFNAMSIZ]; 131 struct ifnet *ifp, *nifp, ifnet; 132 #ifndef __NetBSD__ 133 struct arpcom arpcom; 134 #else 135 struct ethercom ec; 136 union { 137 struct sockaddr_storage st; 138 struct sockaddr_dl sdl; 139 } su; 140 struct sockaddr_dl *sdlp; 141 sdlp = &su.sdl; 142 #endif 143 144 if ((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, buf)) == NULL) { 145 perror("kvm_openfiles"); 146 exit(1); 147 } 148 if (kvm_nlist(kvmd, nl) < 0) { 149 perror("kvm_nlist"); 150 exit(1); 151 } 152 if (nl[N_IFNET].n_value == 0) { 153 printf("symbol %s not found\n", nl[N_IFNET].n_name); 154 exit(1); 155 } 156 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *); 157 while (ifp) { 158 KREAD(ifp, &ifnet, struct ifnet); 159 printf("%s:\n", if_indextoname(ifnet.if_index, ifnam)); 160 161 #if defined(__NetBSD__) || defined(__OpenBSD__) 162 if6_addrlist(ifnet.if_addrlist.tqh_first); 163 nifp = ifnet.if_list.tqe_next; 164 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 165 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead)); 166 nifp = ifnet.if_link.tqe_next; 167 #else 168 if6_addrlist(ifnet.if_addrlist); 169 nifp = ifnet.if_next; 170 #endif 171 172 #ifdef __NetBSD__ 173 KREAD(ifnet.if_sadl, sdlp, struct sockaddr_dl); 174 if (sdlp->sdl_type == IFT_ETHER) { 175 /* If we didn't get all of it, try again */ 176 if (sdlp->sdl_len > sizeof(struct sockaddr_dl)) 177 kread((u_long)ifnet.if_sadl, (void *)sdlp, sdlp->sdl_len); 178 printf("\tenaddr %s", 179 ether_ntoa((struct ether_addr *)LLADDR(sdlp))); 180 KREAD(ifp, &ec, struct ethercom); 181 printf(" multicnt %d", ec.ec_multicnt); 182 acmc(ec.ec_multiaddrs.lh_first); 183 printf("\n"); 184 } 185 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 186 /* not supported */ 187 #else 188 if (ifnet.if_type == IFT_ETHER) { 189 KREAD(ifp, &arpcom, struct arpcom); 190 printf("\tenaddr %s", 191 ether_ntoa((struct ether_addr *)arpcom.ac_enaddr)); 192 KREAD(ifp, &arpcom, struct arpcom); 193 printf(" multicnt %d", arpcom.ac_multicnt); 194 #ifdef __OpenBSD__ 195 acmc(arpcom.ac_multiaddrs.lh_first); 196 #else 197 acmc(arpcom.ac_multiaddrs); 198 #endif 199 printf("\n"); 200 } 201 #endif 202 203 ifp = nifp; 204 } 205 206 exit(0); 207 /*NOTREACHED*/ 208 } 209 210 char *ifname(ifp) 211 struct ifnet *ifp; 212 { 213 static char buf[BUFSIZ]; 214 #if defined(__NetBSD__) || defined(__OpenBSD__) 215 struct ifnet ifnet; 216 #endif 217 218 #if defined(__NetBSD__) || defined(__OpenBSD__) 219 KREAD(ifp, &ifnet, struct ifnet); 220 strncpy(buf, ifnet.if_xname, BUFSIZ); 221 #else 222 KREAD(ifp->if_name, buf, IFNAMSIZ); 223 #endif 224 return buf; 225 } 226 227 void kread(addr, buf, len) 228 u_long addr; 229 void *buf; 230 int len; 231 { 232 if (kvm_read(kvmd, addr, buf, len) != len) { 233 perror("kvm_read"); 234 exit(1); 235 } 236 } 237 238 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 239 void acmc(am) 240 struct ether_multi *am; 241 { 242 struct ether_multi em; 243 244 while (am) { 245 KREAD(am, &em, struct ether_multi); 246 247 printf("\n\t\t"); 248 printf("%s -- ", ether_ntoa((struct ether_addr *)em.enm_addrlo)); 249 printf("%s ", ether_ntoa((struct ether_addr *)&em.enm_addrhi)); 250 printf("%d", em.enm_refcount); 251 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 252 am = em.enm_next; 253 #else 254 am = em.enm_list.le_next; 255 #endif 256 } 257 } 258 #endif 259 260 void 261 if6_addrlist(ifap) 262 struct ifaddr *ifap; 263 { 264 struct ifaddr ifa; 265 struct sockaddr sa; 266 struct in6_ifaddr if6a; 267 struct in6_multi *mc = 0; 268 struct ifaddr *ifap0; 269 270 ifap0 = ifap; 271 while (ifap) { 272 KREAD(ifap, &ifa, struct ifaddr); 273 if (ifa.ifa_addr == NULL) 274 goto nextifap; 275 KREAD(ifa.ifa_addr, &sa, struct sockaddr); 276 if (sa.sa_family != PF_INET6) 277 goto nextifap; 278 KREAD(ifap, &if6a, struct in6_ifaddr); 279 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr)); 280 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 281 mc = mc ? mc : if6a.ia6_multiaddrs.lh_first; 282 #endif 283 nextifap: 284 #if defined(__NetBSD__) || defined(__OpenBSD__) 285 ifap = ifa.ifa_list.tqe_next; 286 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 287 ifap = ifa.ifa_link.tqe_next; 288 #else 289 ifap = ifa.ifa_next; 290 #endif /* __FreeBSD__ >= 3 */ 291 } 292 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 293 if (ifap0) { 294 struct ifnet ifnet; 295 struct ifmultiaddr ifm, *ifmp = 0; 296 struct sockaddr_in6 sin6; 297 struct in6_multi in6m; 298 struct sockaddr_dl sdl; 299 int in6_multilist_done = 0; 300 301 KREAD(ifap0, &ifa, struct ifaddr); 302 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 303 if (ifnet.if_multiaddrs.lh_first) 304 ifmp = ifnet.if_multiaddrs.lh_first; 305 while (ifmp) { 306 KREAD(ifmp, &ifm, struct ifmultiaddr); 307 if (ifm.ifma_addr == NULL) 308 goto nextmulti; 309 KREAD(ifm.ifma_addr, &sa, struct sockaddr); 310 if (sa.sa_family != AF_INET6) 311 goto nextmulti; 312 (void)in6_multientry((struct in6_multi *) 313 ifm.ifma_protospec); 314 if (ifm.ifma_lladdr == 0) 315 goto nextmulti; 316 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl); 317 printf("\t\t\tmcast-macaddr %s multicnt %d\n", 318 ether_ntoa((struct ether_addr *)LLADDR(&sdl)), 319 ifm.ifma_refcount); 320 nextmulti: 321 ifmp = ifm.ifma_link.le_next; 322 } 323 } 324 #else 325 if (mc) 326 in6_multilist(mc); 327 #endif 328 #ifdef N_IN6_MK 329 if (nl[N_IN6_MK].n_value != 0) { 330 LIST_HEAD(in6_mktype, multi6_kludge) in6_mk; 331 struct multi6_kludge *mkp, mk; 332 char *nam; 333 334 KREAD(nl[N_IN6_MK].n_value, &in6_mk, struct in6_mktype); 335 KREAD(ifap0, &ifa, struct ifaddr); 336 337 nam = strdup(ifname(ifa.ifa_ifp)); 338 339 for (mkp = in6_mk.lh_first; mkp; mkp = mk.mk_entry.le_next) { 340 KREAD(mkp, &mk, struct multi6_kludge); 341 if (strcmp(nam, ifname(mk.mk_ifp)) == 0 && 342 mk.mk_head.lh_first) { 343 printf("\t(on kludge entry for %s)\n", nam); 344 in6_multilist(mk.mk_head.lh_first); 345 } 346 } 347 348 free(nam); 349 } 350 #endif 351 } 352 353 struct in6_multi * 354 in6_multientry(mc) 355 struct in6_multi *mc; 356 { 357 struct in6_multi multi; 358 359 KREAD(mc, &multi, struct in6_multi); 360 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr)); 361 printf(" refcnt %u\n", multi.in6m_refcount); 362 return(multi.in6m_entry.le_next); 363 } 364 365 void 366 in6_multilist(mc) 367 struct in6_multi *mc; 368 { 369 while (mc) 370 mc = in6_multientry(mc); 371 } 372 373 #if !defined(__NetBSD__) && !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__) 374 static char * 375 ether_ntoa(e) 376 struct ether_addr *e; 377 { 378 static char buf[20]; 379 u_char *p; 380 381 p = (u_char *)e; 382 383 snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x", 384 p[0], p[1], p[2], p[3], p[4], p[5]); 385 return buf; 386 } 387 #endif 388