2 * Copyright (c) 2007 Bruce M. Simpson <bms@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 * Print the running system's current multicast group memberships.
33 * As this relies on getifmaddrs(), it may not be used with a core file.
36 #include <sys/types.h>
37 #include <sys/socket.h>
40 #include <net/if_var.h>
41 #include <net/if_mib.h>
42 #include <net/if_types.h>
43 #include <net/if_dl.h>
44 #include <net/route.h>
45 #include <netinet/in.h>
46 #include <netinet/if_ether.h>
47 #include <arpa/inet.h>
64 #define __NETSTAT_BURN_BRIDGES
66 #ifdef __NETSTAT_BURN_BRIDGES
69 struct sockaddr_storage ss;
71 struct sockaddr_dl sdl;
72 struct sockaddr_in sin;
73 struct sockaddr_in6 sin6;
75 typedef union sockunion sockunion_t;
77 void ifmalist_dump_af(const struct ifmaddrs * const ifmap, int const af);
80 ifmalist_dump_af(const struct ifmaddrs * const ifmap, int const af)
82 const struct ifmaddrs *ifma;
84 char myifname[IFNAMSIZ];
86 char addrbuf[INET6_ADDRSTRLEN];
89 char *pafname, *pifname, *plladdr, *pgroup;
104 pafname = "Link-layer";
110 fprintf(stdout, "%s Multicast Group Memberships\n", pafname);
111 fprintf(stdout, "%-20s\t%-16s\t%s\n", "Group", "Link-layer Address",
114 for (ifma = ifmap; ifma; ifma = ifma->ifma_next) {
116 if (ifma->ifma_name == NULL || ifma->ifma_addr == NULL)
120 psa = (sockunion_t *)ifma->ifma_addr;
121 if (psa->sa.sa_family != af)
124 switch (psa->sa.sa_family) {
126 pgroup = inet_ntoa(psa->sin.sin_addr);
130 in6addr = &psa->sin6.sin6_addr;
131 inet_ntop(psa->sa.sa_family, in6addr, addrbuf,
137 if ((psa->sdl.sdl_alen == ETHER_ADDR_LEN) ||
138 (psa->sdl.sdl_type == IFT_ETHER)) {
140 ether_ntoa((struct ether_addr *)&psa->sdl.sdl_data);
143 pgroup = addr2ascii(AF_LINK,
145 sizeof(struct sockaddr_dl),
154 /* Link-layer mapping, if any */
155 psa = (sockunion_t *)ifma->ifma_lladdr;
157 if (psa->sa.sa_family == AF_LINK) {
158 if ((psa->sdl.sdl_alen == ETHER_ADDR_LEN) ||
159 (psa->sdl.sdl_type == IFT_ETHER)) {
162 ether_ntoa((struct ether_addr *)&psa->sdl.sdl_data);
165 /* something more exotic */
166 plladdr = addr2ascii(AF_LINK,
168 sizeof(struct sockaddr_dl),
173 /* not a link-layer address */
174 plladdr = "<invalid>";
180 /* Interface upon which the membership exists */
181 psa = (sockunion_t *)ifma->ifma_name;
182 if (psa != NULL && psa->sa.sa_family == AF_LINK) {
183 strlcpy(myifname, link_ntoa(&psa->sdl), IFNAMSIZ);
184 pcolon = strchr(myifname, ':');
192 fprintf(stdout, "%-20s\t%-16s\t%s\n", pgroup, plladdr, pifname);
199 struct ifmaddrs *ifmap;
202 "WARNING: This functionality is deprecated, and will be removed\n"
203 "in FreeBSD 7.0. Please consider using ifmcstat(8) instead.\n");
205 if (getifmaddrs(&ifmap))
206 err(EX_OSERR, "getifmaddrs");
208 ifmalist_dump_af(ifmap, AF_LINK);
210 ifmalist_dump_af(ifmap, AF_INET);
213 ifmalist_dump_af(ifmap, AF_INET6);
218 #endif /* __NETSTAT_BURN_BRIDGES */