1 /* $NetBSD: ifmcstat.c,v 1.10 2009/04/19 07:49:07 lukem 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 u_int32_t scopeid; 114 const int niflags = NI_NUMERICHOST; 115 116 memset(&sin6, 0, sizeof(sin6)); 117 sin6.sin6_family = AF_INET6; 118 sin6.sin6_len = sizeof(struct sockaddr_in6); 119 sin6.sin6_addr = *p; 120 if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p)) { 121 scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 122 if (scopeid) { 123 sin6.sin6_scope_id = scopeid; 124 sin6.sin6_addr.s6_addr[2] = 0; 125 sin6.sin6_addr.s6_addr[3] = 0; 126 } 127 } 128 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 129 buf, sizeof(buf), NULL, 0, niflags) == 0) 130 return buf; 131 else 132 return "(invalid)"; 133 } 134 135 int main() 136 { 137 char buf[_POSIX2_LINE_MAX], ifnam[IFNAMSIZ]; 138 struct ifnet *ifp, *nifp, ifnet; 139 #ifndef __NetBSD__ 140 struct arpcom arpcom; 141 #else 142 struct ethercom ec; 143 struct sockaddr_dl sdl; 144 #endif 145 146 if ((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, buf)) == NULL) { 147 perror("kvm_openfiles"); 148 exit(1); 149 } 150 if (kvm_nlist(kvmd, nl) < 0) { 151 perror("kvm_nlist"); 152 exit(1); 153 } 154 if (nl[N_IFNET].n_value == 0) { 155 printf("symbol %s not found\n", nl[N_IFNET].n_name); 156 exit(1); 157 } 158 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *); 159 while (ifp) { 160 KREAD(ifp, &ifnet, struct ifnet); 161 printf("%s:\n", if_indextoname(ifnet.if_index, ifnam)); 162 163 #if defined(__NetBSD__) || defined(__OpenBSD__) 164 if6_addrlist(ifnet.if_addrlist.tqh_first); 165 nifp = ifnet.if_list.tqe_next; 166 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 167 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead)); 168 nifp = ifnet.if_link.tqe_next; 169 #else 170 if6_addrlist(ifnet.if_addrlist); 171 nifp = ifnet.if_next; 172 #endif 173 174 #ifdef __NetBSD__ 175 KREAD(ifnet.if_sadl, &sdl, struct sockaddr_dl); 176 if (sdl.sdl_type == IFT_ETHER) { 177 printf("\tenaddr %s", 178 ether_ntoa((struct ether_addr *)LLADDR(&sdl))); 179 KREAD(ifp, &ec, struct ethercom); 180 printf(" multicnt %d", ec.ec_multicnt); 181 acmc(ec.ec_multiaddrs.lh_first); 182 printf("\n"); 183 } 184 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 185 /* not supported */ 186 #else 187 if (ifnet.if_type == IFT_ETHER) { 188 KREAD(ifp, &arpcom, struct arpcom); 189 printf("\tenaddr %s", 190 ether_ntoa((struct ether_addr *)arpcom.ac_enaddr)); 191 KREAD(ifp, &arpcom, struct arpcom); 192 printf(" multicnt %d", arpcom.ac_multicnt); 193 #ifdef __OpenBSD__ 194 acmc(arpcom.ac_multiaddrs.lh_first); 195 #else 196 acmc(arpcom.ac_multiaddrs); 197 #endif 198 printf("\n"); 199 } 200 #endif 201 202 ifp = nifp; 203 } 204 205 exit(0); 206 /*NOTREACHED*/ 207 } 208 209 char *ifname(ifp) 210 struct ifnet *ifp; 211 { 212 static char buf[BUFSIZ]; 213 #if defined(__NetBSD__) || defined(__OpenBSD__) 214 struct ifnet ifnet; 215 #endif 216 217 #if defined(__NetBSD__) || defined(__OpenBSD__) 218 KREAD(ifp, &ifnet, struct ifnet); 219 strncpy(buf, ifnet.if_xname, BUFSIZ); 220 #else 221 KREAD(ifp->if_name, buf, IFNAMSIZ); 222 #endif 223 return buf; 224 } 225 226 void kread(addr, buf, len) 227 u_long addr; 228 void *buf; 229 int len; 230 { 231 if (kvm_read(kvmd, addr, buf, len) != len) { 232 perror("kvm_read"); 233 exit(1); 234 } 235 } 236 237 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 238 void acmc(am) 239 struct ether_multi *am; 240 { 241 struct ether_multi em; 242 243 while (am) { 244 KREAD(am, &em, struct ether_multi); 245 246 printf("\n\t\t"); 247 printf("%s -- ", ether_ntoa((struct ether_addr *)em.enm_addrlo)); 248 printf("%s ", ether_ntoa((struct ether_addr *)&em.enm_addrhi)); 249 printf("%d", em.enm_refcount); 250 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 251 am = em.enm_next; 252 #else 253 am = em.enm_list.le_next; 254 #endif 255 } 256 } 257 #endif 258 259 void 260 if6_addrlist(ifap) 261 struct ifaddr *ifap; 262 { 263 struct ifaddr ifa; 264 struct sockaddr sa; 265 struct in6_ifaddr if6a; 266 struct in6_multi *mc = 0; 267 struct ifaddr *ifap0; 268 269 ifap0 = ifap; 270 while (ifap) { 271 KREAD(ifap, &ifa, struct ifaddr); 272 if (ifa.ifa_addr == NULL) 273 goto nextifap; 274 KREAD(ifa.ifa_addr, &sa, struct sockaddr); 275 if (sa.sa_family != PF_INET6) 276 goto nextifap; 277 KREAD(ifap, &if6a, struct in6_ifaddr); 278 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr)); 279 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 280 mc = mc ? mc : if6a.ia6_multiaddrs.lh_first; 281 #endif 282 nextifap: 283 #if defined(__NetBSD__) || defined(__OpenBSD__) 284 ifap = ifa.ifa_list.tqe_next; 285 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 286 ifap = ifa.ifa_link.tqe_next; 287 #else 288 ifap = ifa.ifa_next; 289 #endif /* __FreeBSD__ >= 3 */ 290 } 291 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 292 if (ifap0) { 293 struct ifnet ifnet; 294 struct ifmultiaddr ifm, *ifmp = 0; 295 struct sockaddr_in6 sin6; 296 struct in6_multi in6m; 297 struct sockaddr_dl sdl; 298 int in6_multilist_done = 0; 299 300 KREAD(ifap0, &ifa, struct ifaddr); 301 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 302 if (ifnet.if_multiaddrs.lh_first) 303 ifmp = ifnet.if_multiaddrs.lh_first; 304 while (ifmp) { 305 KREAD(ifmp, &ifm, struct ifmultiaddr); 306 if (ifm.ifma_addr == NULL) 307 goto nextmulti; 308 KREAD(ifm.ifma_addr, &sa, struct sockaddr); 309 if (sa.sa_family != AF_INET6) 310 goto nextmulti; 311 (void)in6_multientry((struct in6_multi *) 312 ifm.ifma_protospec); 313 if (ifm.ifma_lladdr == 0) 314 goto nextmulti; 315 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl); 316 printf("\t\t\tmcast-macaddr %s multicnt %d\n", 317 ether_ntoa((struct ether_addr *)LLADDR(&sdl)), 318 ifm.ifma_refcount); 319 nextmulti: 320 ifmp = ifm.ifma_link.le_next; 321 } 322 } 323 #else 324 if (mc) 325 in6_multilist(mc); 326 #endif 327 #ifdef N_IN6_MK 328 if (nl[N_IN6_MK].n_value != 0) { 329 LIST_HEAD(in6_mktype, multi6_kludge) in6_mk; 330 struct multi6_kludge *mkp, mk; 331 char *nam; 332 333 KREAD(nl[N_IN6_MK].n_value, &in6_mk, struct in6_mktype); 334 KREAD(ifap0, &ifa, struct ifaddr); 335 336 nam = strdup(ifname(ifa.ifa_ifp)); 337 338 for (mkp = in6_mk.lh_first; mkp; mkp = mk.mk_entry.le_next) { 339 KREAD(mkp, &mk, struct multi6_kludge); 340 if (strcmp(nam, ifname(mk.mk_ifp)) == 0 && 341 mk.mk_head.lh_first) { 342 printf("\t(on kludge entry for %s)\n", nam); 343 in6_multilist(mk.mk_head.lh_first); 344 } 345 } 346 347 free(nam); 348 } 349 #endif 350 } 351 352 struct in6_multi * 353 in6_multientry(mc) 354 struct in6_multi *mc; 355 { 356 struct in6_multi multi; 357 358 KREAD(mc, &multi, struct in6_multi); 359 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr)); 360 printf(" refcnt %u\n", multi.in6m_refcount); 361 return(multi.in6m_entry.le_next); 362 } 363 364 void 365 in6_multilist(mc) 366 struct in6_multi *mc; 367 { 368 while (mc) 369 mc = in6_multientry(mc); 370 } 371 372 #if !defined(__NetBSD__) && !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__) 373 static char * 374 ether_ntoa(e) 375 struct ether_addr *e; 376 { 377 static char buf[20]; 378 u_char *p; 379 380 p = (u_char *)e; 381 382 snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x", 383 p[0], p[1], p[2], p[3], p[4], p[5]); 384 return buf; 385 } 386 #endif 387