freebsd-nq/usr.sbin/ifmcstat/ifmcstat.c
2007-03-20 02:08:28 +00:00

555 lines
13 KiB
C

/* $KAME: ifmcstat.c,v 1.48 2006/11/15 05:13:59 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* TODO: use sysctl. */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/igmp.h>
#ifdef HAVE_IGMPV3
# include <netinet/in_msf.h>
#endif
#define KERNEL
# include <netinet/if_ether.h>
#undef KERNEL
#define _KERNEL
# include <sys/sysctl.h>
# include <netinet/igmp_var.h>
#undef _KERNEL
#ifdef INET6
# ifdef HAVE_MLDV2
# include <netinet6/in6_msf.h>
# endif
#include <netinet/icmp6.h>
#define _KERNEL
# include <netinet6/mld6_var.h>
#undef _KERNEL
#endif /* INET6 */
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <kvm.h>
#include <nlist.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <netdb.h>
kvm_t *kvmd;
int ifindex = 0;
int af = AF_UNSPEC;
struct nlist nl[] = {
#define N_IFNET 0
{ "_ifnet" },
{ "" },
};
const char *inet6_n2a __P((struct in6_addr *));
int main __P((int, char **));
char *ifname __P((struct ifnet *));
void kread __P((u_long, void *, int));
#ifdef INET6
void if6_addrlist __P((struct ifaddr *));
void in6_multilist __P((struct in6_multi *));
struct in6_multi * in6_multientry __P((struct in6_multi *));
#endif
void if_addrlist(struct ifaddr *);
void in_multilist(struct in_multi *);
struct in_multi * in_multientry(struct in_multi *);
#ifdef HAVE_IGMPV3
void in_addr_slistentry(struct in_addr_slist *ias, char *heading);
#endif
#ifdef HAVE_MLDV2
void in6_addr_slistentry(struct in6_addr_slist *ias, char *heading);
#endif
#define KREAD(addr, buf, type) \
kread((u_long)addr, (void *)buf, sizeof(type))
const char *inet6_n2a(p)
struct in6_addr *p;
{
static char buf[NI_MAXHOST];
struct sockaddr_in6 sin6;
u_int32_t scopeid;
const int niflags = NI_NUMERICHOST;
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(struct sockaddr_in6);
sin6.sin6_addr = *p;
if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p) ||
IN6_IS_ADDR_MC_NODELOCAL(p)) {
scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
if (scopeid) {
sin6.sin6_scope_id = scopeid;
sin6.sin6_addr.s6_addr[2] = 0;
sin6.sin6_addr.s6_addr[3] = 0;
}
}
if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
buf, sizeof(buf), NULL, 0, niflags) == 0)
return buf;
else
return "(invalid)";
}
int main(argc, argv)
int argc;
char **argv;
{
char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ];
int c;
struct ifnet *ifp, *nifp, ifnet;
const char *kernel = NULL;
const char *core = NULL;
/* "ifmcstat [kernel]" format is supported for backward compatiblity */
if (argc == 2)
kernel = argv[1];
while ((c = getopt(argc, argv, "i:f:M:N:")) != -1) {
switch (c) {
case 'i':
if ((ifindex = if_nametoindex(optarg)) == 0) {
fprintf(stderr, "%s: unknown interface\n", optarg);
exit(1);
}
break;
case 'f':
if (strcmp(optarg, "inet") == 0) {
af = AF_INET;
break;
}
if (strcmp(optarg, "inet6") == 0) {
af = AF_INET6;
break;
}
fprintf(stderr, "%s: unknown address family\n", optarg);
exit(1);
/*NOTREACHED*/
case 'M':
core = strdup(optarg);
break;
case 'N':
kernel = strdup(optarg);
break;
default:
fprintf(stderr,
"usage: ifmcstat [-i interface] [-f address family] [-M core] [-N system]\n");
exit(1);
/*NOTREACHED*/
}
}
if ((kvmd = kvm_openfiles(kernel, core, NULL, O_RDONLY, buf)) ==
NULL) {
perror("kvm_openfiles");
exit(1);
}
if (kvm_nlist(kvmd, nl) < 0) {
perror("kvm_nlist");
exit(1);
}
if (nl[N_IFNET].n_value == 0) {
printf("symbol %s not found\n", nl[N_IFNET].n_name);
exit(1);
}
KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
while (ifp) {
KREAD(ifp, &ifnet, struct ifnet);
nifp = ifnet.if_link.tqe_next;
if (ifindex && ifindex != ifnet.if_index)
goto next;
printf("%s:\n", if_indextoname(ifnet.if_index, ifname));
if_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
#ifdef INET6
if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
#endif
next:
ifp = nifp;
}
exit(0);
/*NOTREACHED*/
}
char *ifname(ifp)
struct ifnet *ifp;
{
static char buf[BUFSIZ];
struct ifnet ifnet;
KREAD(ifp, &ifnet, struct ifnet);
strlcpy(buf, ifnet.if_xname, sizeof(buf));
return buf;
}
void kread(addr, buf, len)
u_long addr;
void *buf;
int len;
{
if (kvm_read(kvmd, addr, buf, len) != len) {
perror("kvm_read");
exit(1);
}
}
#ifdef INET6
void
if6_addrlist(ifap)
struct ifaddr *ifap;
{
struct ifaddr ifa;
struct sockaddr sa;
struct in6_ifaddr if6a;
struct ifaddr *ifap0;
if (af && af != AF_INET6)
return;
ifap0 = ifap;
while (ifap) {
KREAD(ifap, &ifa, struct ifaddr);
if (ifa.ifa_addr == NULL)
goto nextifap;
KREAD(ifa.ifa_addr, &sa, struct sockaddr);
if (sa.sa_family != PF_INET6)
goto nextifap;
KREAD(ifap, &if6a, struct in6_ifaddr);
printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr));
nextifap:
ifap = ifa.ifa_link.tqe_next;
}
if (ifap0) {
struct ifnet ifnet;
struct ifmultiaddr ifm, *ifmp = 0;
struct sockaddr_dl sdl;
KREAD(ifap0, &ifa, struct ifaddr);
KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
if (TAILQ_FIRST(&ifnet.if_multiaddrs))
ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
while (ifmp) {
KREAD(ifmp, &ifm, struct ifmultiaddr);
if (ifm.ifma_addr == NULL)
goto nextmulti;
KREAD(ifm.ifma_addr, &sa, struct sockaddr);
if (sa.sa_family != AF_INET6)
goto nextmulti;
(void)in6_multientry((struct in6_multi *)
ifm.ifma_protospec);
if (ifm.ifma_lladdr == 0)
goto nextmulti;
KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
printf("\t\t\tmcast-macaddr %s multicnt %d\n",
ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
ifm.ifma_refcount);
nextmulti:
ifmp = TAILQ_NEXT(&ifm, ifma_link);
}
}
}
struct in6_multi *
in6_multientry(mc)
struct in6_multi *mc;
{
struct in6_multi multi;
#ifdef HAVE_MLDV2
struct in6_multi_source src;
struct router6_info rt6i;
#endif
KREAD(mc, &multi, struct in6_multi);
printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr));
printf(" refcnt %u\n", multi.in6m_refcount);
#ifdef HAVE_MLDV2
if (multi.in6m_rti != NULL) {
KREAD(multi.in6m_rti, &rt6i, struct router_info);
printf("\t\t\t");
switch (rt6i.rt6i_type) {
case MLD_V1_ROUTER:
printf("mldv1");
break;
case MLD_V2_ROUTER:
printf("mldv2");
break;
default:
printf("mldv?(%d)", rt6i.rt6i_type);
break;
}
if (multi.in6m_source == NULL) {
printf("\n");
return(multi.in6m_entry.le_next);
}
KREAD(multi.in6m_source, &src, struct in6_multi_source);
printf(" mode=%s grpjoin=%d\n",
src.i6ms_mode == MCAST_INCLUDE ? "include" :
src.i6ms_mode == MCAST_EXCLUDE ? "exclude" :
"???",
src.i6ms_grpjoin);
in6_addr_slistentry(src.i6ms_cur, "current");
in6_addr_slistentry(src.i6ms_rec, "recorded");
in6_addr_slistentry(src.i6ms_in, "included");
in6_addr_slistentry(src.i6ms_ex, "excluded");
in6_addr_slistentry(src.i6ms_alw, "allowed");
in6_addr_slistentry(src.i6ms_blk, "blocked");
in6_addr_slistentry(src.i6ms_toin, "to-include");
in6_addr_slistentry(src.i6ms_ex, "to-exclude");
}
#endif
return(multi.in6m_entry.le_next);
}
#ifdef HAVE_MLDV2
void
in6_addr_slistentry(struct in6_addr_slist *ias, char *heading)
{
struct in6_addr_slist slist;
struct i6as_head head;
struct in6_addr_source src;
if (ias == NULL) {
printf("\t\t\t\t%s (none)\n", heading);
return;
}
memset(&slist, 0, sizeof(slist));
KREAD(ias, &slist, struct in6_addr_source);
printf("\t\t\t\t%s (entry num=%d)\n", heading, slist.numsrc);
if (slist.numsrc == 0) {
return;
}
KREAD(slist.head, &head, struct i6as_head);
KREAD(head.lh_first, &src, struct in6_addr_source);
while (1) {
printf("\t\t\t\t\tsource %s (ref=%d)\n",
inet6_n2a(&src.i6as_addr.sin6_addr),
src.i6as_refcount);
if (src.i6as_list.le_next == NULL)
break;
KREAD(src.i6as_list.le_next, &src, struct in6_addr_source);
}
return;
}
#endif
void
in6_multilist(mc)
struct in6_multi *mc;
{
while (mc)
mc = in6_multientry(mc);
}
#endif /* INET6 */
void
if_addrlist(ifap)
struct ifaddr *ifap;
{
struct ifaddr ifa;
struct sockaddr sa;
struct in_ifaddr ia;
struct ifaddr *ifap0;
if (af && af != AF_INET)
return;
ifap0 = ifap;
while (ifap) {
KREAD(ifap, &ifa, struct ifaddr);
if (ifa.ifa_addr == NULL)
goto nextifap;
KREAD(ifa.ifa_addr, &sa, struct sockaddr);
if (sa.sa_family != PF_INET)
goto nextifap;
KREAD(ifap, &ia, struct in_ifaddr);
printf("\tinet %s\n", inet_ntoa(ia.ia_addr.sin_addr));
nextifap:
ifap = ifa.ifa_link.tqe_next;
}
if (ifap0) {
struct ifnet ifnet;
struct ifmultiaddr ifm, *ifmp = 0;
struct sockaddr_dl sdl;
KREAD(ifap0, &ifa, struct ifaddr);
KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
if (TAILQ_FIRST(&ifnet.if_multiaddrs))
ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
while (ifmp) {
KREAD(ifmp, &ifm, struct ifmultiaddr);
if (ifm.ifma_addr == NULL)
goto nextmulti;
KREAD(ifm.ifma_addr, &sa, struct sockaddr);
if (sa.sa_family != AF_INET)
goto nextmulti;
(void)in_multientry((struct in_multi *)
ifm.ifma_protospec);
if (ifm.ifma_lladdr == 0)
goto nextmulti;
KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
printf("\t\t\tmcast-macaddr %s multicnt %d\n",
ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
ifm.ifma_refcount);
nextmulti:
ifmp = TAILQ_NEXT(&ifm, ifma_link);
}
}
}
void
in_multilist(mc)
struct in_multi *mc;
{
while (mc)
mc = in_multientry(mc);
}
struct in_multi *
in_multientry(mc)
struct in_multi *mc;
{
struct in_multi multi;
struct router_info rti;
#ifdef HAVE_IGMPV3
struct in_multi_source src;
#endif
KREAD(mc, &multi, struct in_multi);
printf("\t\tgroup %s\n", inet_ntoa(multi.inm_addr));
if (multi.inm_rti != NULL) {
KREAD(multi.inm_rti, &rti, struct router_info);
printf("\t\t\t");
switch (rti.rti_type) {
case IGMP_V1_ROUTER:
printf("igmpv1");
break;
case IGMP_V2_ROUTER:
printf("igmpv2");
break;
#ifdef HAVE_IGMPV3
case IGMP_V3_ROUTER:
printf("igmpv3");
break;
#endif
default:
printf("igmpv?(%d)", rti.rti_type);
break;
}
#ifdef HAVE_IGMPV3
if (multi.inm_source == NULL) {
printf("\n");
return (multi.inm_list.le_next);
}
KREAD(multi.inm_source, &src, struct in_multi_source);
printf(" mode=%s grpjoin=%d\n",
src.ims_mode == MCAST_INCLUDE ? "include" :
src.ims_mode == MCAST_EXCLUDE ? "exclude" :
"???",
src.ims_grpjoin);
in_addr_slistentry(src.ims_cur, "current");
in_addr_slistentry(src.ims_rec, "recorded");
in_addr_slistentry(src.ims_in, "included");
in_addr_slistentry(src.ims_ex, "excluded");
in_addr_slistentry(src.ims_alw, "allowed");
in_addr_slistentry(src.ims_blk, "blocked");
in_addr_slistentry(src.ims_toin, "to-include");
in_addr_slistentry(src.ims_ex, "to-exclude");
#else
printf("\n");
#endif
}
return (NULL);
}
#ifdef HAVE_IGMPV3
void
in_addr_slistentry(struct in_addr_slist *ias, char *heading)
{
struct in_addr_slist slist;
struct ias_head head;
struct in_addr_source src;
if (ias == NULL) {
printf("\t\t\t\t%s (none)\n", heading);
return;
}
memset(&slist, 0, sizeof(slist));
KREAD(ias, &slist, struct in_addr_source);
printf("\t\t\t\t%s (entry num=%d)\n", heading, slist.numsrc);
if (slist.numsrc == 0) {
return;
}
KREAD(slist.head, &head, struct ias_head);
KREAD(head.lh_first, &src, struct in_addr_source);
while (1) {
printf("\t\t\t\t\tsource %s (ref=%d)\n",
inet_ntoa(src.ias_addr.sin_addr), src.ias_refcount);
if (src.ias_list.le_next == NULL)
break;
KREAD(src.ias_list.le_next, &src, struct in_addr_source);
}
return;
}
#endif