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 #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 <sys/queue.h> 43 44 #include <net/if.h> 45 #include <net/if_var.h> 46 #include <net/if_types.h> 47 #include <net/if_dl.h> 48 #include <netinet/in.h> 49 #define _KERNEL 50 #include <netinet/if_ether.h> 51 #undef _KERNEL 52 #include <netinet/in_var.h> 53 #include <arpa/inet.h> 54 55 #include <netdb.h> 56 57 kvm_t *kvmd; 58 59 struct nlist nl[] = { 60 #define N_IFNET 0 61 { "_ifnet" }, 62 { "" }, 63 }; 64 65 const char *inet6_n2a __P((struct in6_addr *)); 66 int main __P((void)); 67 char *ifname __P((struct ifnet *)); 68 void kread __P((u_long, void *, int)); 69 void if6_addrlist __P((struct ifaddr *)); 70 void in6_multilist __P((struct in6_multi *)); 71 struct in6_multi * in6_multientry __P((struct in6_multi *)); 72 73 #define KREAD(addr, buf, type) \ 74 kread((u_long)addr, (void *)buf, sizeof(type)) 75 76 #ifdef N_IN6_MK 77 struct multi6_kludge { 78 LIST_ENTRY(multi6_kludge) mk_entry; 79 struct ifnet *mk_ifp; 80 struct in6_multihead mk_head; 81 }; 82 #endif 83 84 const char *inet6_n2a(p) 85 struct in6_addr *p; 86 { 87 static char buf[NI_MAXHOST]; 88 struct sockaddr_in6 sin6; 89 u_int32_t scopeid; 90 #ifdef NI_WITHSCOPEID 91 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 92 #else 93 const int niflags = NI_NUMERICHOST; 94 #endif 95 96 memset(&sin6, 0, sizeof(sin6)); 97 sin6.sin6_family = AF_INET6; 98 sin6.sin6_len = sizeof(struct sockaddr_in6); 99 sin6.sin6_addr = *p; 100 if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p)) { 101 scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 102 if (scopeid) { 103 sin6.sin6_scope_id = scopeid; 104 sin6.sin6_addr.s6_addr[2] = 0; 105 sin6.sin6_addr.s6_addr[3] = 0; 106 } 107 } 108 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 109 buf, sizeof(buf), NULL, 0, niflags) == 0) 110 return buf; 111 else 112 return "(invalid)"; 113 } 114 115 int main() 116 { 117 char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ]; 118 struct ifnet *ifp, *nifp, ifnet; 119 120 if ((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, buf)) == NULL) { 121 perror("kvm_openfiles"); 122 exit(1); 123 } 124 if (kvm_nlist(kvmd, nl) < 0) { 125 perror("kvm_nlist"); 126 exit(1); 127 } 128 if (nl[N_IFNET].n_value == 0) { 129 printf("symbol %s not found\n", nl[N_IFNET].n_name); 130 exit(1); 131 } 132 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *); 133 while (ifp) { 134 KREAD(ifp, &ifnet, struct ifnet); 135 printf("%s:\n", if_indextoname(ifnet.if_index, ifname)); 136 137 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead)); 138 nifp = TAILQ_NEXT(&ifnet, if_link); 139 140 /* not supported */ 141 142 ifp = nifp; 143 } 144 145 exit(0); 146 /*NOTREACHED*/ 147 } 148 149 char *ifname(ifp) 150 struct ifnet *ifp; 151 { 152 static char buf[BUFSIZ]; 153 struct ifnet ifnet; 154 char ifnamebuf[IFNAMSIZ]; 155 156 KREAD(ifp, &ifnet, struct ifnet); 157 KREAD(ifnet.if_name, ifnamebuf, sizeof(ifnamebuf)); 158 snprintf(buf, sizeof(buf), "%s%d", ifnamebuf, 159 ifnet.if_unit); /* does snprintf allow overlap copy?? */ 160 return buf; 161 } 162 163 void kread(addr, buf, len) 164 u_long addr; 165 void *buf; 166 int len; 167 { 168 if (kvm_read(kvmd, addr, buf, len) != len) { 169 perror("kvm_read"); 170 exit(1); 171 } 172 } 173 174 void 175 if6_addrlist(ifap) 176 struct ifaddr *ifap; 177 { 178 struct ifaddr ifa; 179 struct sockaddr sa; 180 struct in6_ifaddr if6a; 181 struct ifaddr *ifap0; 182 183 ifap0 = ifap; 184 while (ifap) { 185 KREAD(ifap, &ifa, struct ifaddr); 186 if (ifa.ifa_addr == NULL) 187 goto nextifap; 188 KREAD(ifa.ifa_addr, &sa, struct sockaddr); 189 if (sa.sa_family != PF_INET6) 190 goto nextifap; 191 KREAD(ifap, &if6a, struct in6_ifaddr); 192 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr)); 193 nextifap: 194 ifap = TAILQ_NEXT(&ifa, ifa_link); 195 } 196 if (ifap0) { 197 struct ifnet ifnet; 198 struct ifmultiaddr ifm, *ifmp = 0; 199 struct sockaddr_dl sdl; 200 201 KREAD(ifap0, &ifa, struct ifaddr); 202 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 203 if (TAILQ_FIRST(&ifnet.if_multiaddrs)) 204 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs); 205 while (ifmp) { 206 KREAD(ifmp, &ifm, struct ifmultiaddr); 207 if (ifm.ifma_addr == NULL) 208 goto nextmulti; 209 KREAD(ifm.ifma_addr, &sa, struct sockaddr); 210 if (sa.sa_family != AF_INET6) 211 goto nextmulti; 212 (void)in6_multientry((struct in6_multi *) 213 ifm.ifma_protospec); 214 if (ifm.ifma_lladdr == 0) 215 goto nextmulti; 216 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl); 217 printf("\t\t\tmcast-macaddr %s multicnt %d\n", 218 ether_ntoa((struct ether_addr *)LLADDR(&sdl)), 219 ifm.ifma_refcount); 220 nextmulti: 221 ifmp = TAILQ_NEXT(&ifm, ifma_link); 222 } 223 } 224 #ifdef N_IN6_MK 225 if (nl[N_IN6_MK].n_value != 0) { 226 LIST_HEAD(in6_mktype, multi6_kludge) in6_mk; 227 struct multi6_kludge *mkp, mk; 228 char *nam; 229 230 KREAD(nl[N_IN6_MK].n_value, &in6_mk, struct in6_mktype); 231 KREAD(ifap0, &ifa, struct ifaddr); 232 233 nam = strdup(ifname(ifa.ifa_ifp)); 234 if (!nam) { 235 fprintf(stderr, "ifmcstat: not enough core\n"); 236 exit(1); 237 } 238 239 LIST_FOREACH(mkp, &in6_mk, mk_entry) { 240 KREAD(mkp, &mk, struct multi6_kludge); 241 if (strcmp(nam, ifname(mk.mk_ifp)) == 0 && 242 LIST_FIRST(&mk.mk_head)) { 243 printf("\t(on kludge entry for %s)\n", nam); 244 in6_multilist(LIST_FIRST(&mk.mk_head)); 245 } 246 } 247 248 free(nam); 249 } 250 #endif 251 } 252 253 struct in6_multi * 254 in6_multientry(mc) 255 struct in6_multi *mc; 256 { 257 struct in6_multi multi; 258 259 KREAD(mc, &multi, struct in6_multi); 260 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr)); 261 printf(" refcnt %u\n", multi.in6m_refcount); 262 return(LIST_NEXT(&multi, in6m_entry)); 263 } 264 265 void 266 in6_multilist(mc) 267 struct in6_multi *mc; 268 { 269 while (mc) 270 mc = in6_multientry(mc); 271 } 272