1241 lines
27 KiB
C
1241 lines
27 KiB
C
/* $KAME: ifmcstat.c,v 1.48 2006/11/15 05:13:59 itojun Exp $ */
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/*
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* Copyright (c) 2007-2009 Bruce Simpson.
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/socket.h>
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#include <sys/queue.h>
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#include <sys/tree.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_types.h>
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#include <net/if_dl.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/igmp.h>
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#define KERNEL
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# include <netinet/if_ether.h>
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#undef KERNEL
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#define _KERNEL
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#define SYSCTL_DECL(x)
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# include <netinet/igmp_var.h>
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#undef SYSCTL_DECL
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#undef _KERNEL
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#ifdef INET6
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#include <netinet/icmp6.h>
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#define _KERNEL
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# include <netinet6/mld6_var.h>
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#undef _KERNEL
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#endif /* INET6 */
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <kvm.h>
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#include <limits.h>
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#include <ifaddrs.h>
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#include <nlist.h>
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#include <sysexits.h>
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#include <unistd.h>
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/* XXX: This file currently assumes INET and KVM support in the base system. */
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#ifndef INET
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#define INET
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#endif
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extern void printb(const char *, unsigned int, const char *);
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union sockunion {
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struct sockaddr_storage ss;
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struct sockaddr sa;
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struct sockaddr_dl sdl;
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#ifdef INET
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struct sockaddr_in sin;
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#endif
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#ifdef INET6
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struct sockaddr_in6 sin6;
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#endif
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};
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typedef union sockunion sockunion_t;
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uint32_t ifindex = 0;
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int af = AF_UNSPEC;
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#ifdef WITH_KVM
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int Kflag = 0;
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#endif
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int vflag = 0;
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#define sa_equal(a1, a2) \
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(bcmp((a1), (a2), ((a1))->sa_len) == 0)
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#define sa_dl_equal(a1, a2) \
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((((struct sockaddr_dl *)(a1))->sdl_len == \
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((struct sockaddr_dl *)(a2))->sdl_len) && \
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(bcmp(LLADDR((struct sockaddr_dl *)(a1)), \
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LLADDR((struct sockaddr_dl *)(a2)), \
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((struct sockaddr_dl *)(a1))->sdl_alen) == 0))
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/*
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* Most of the code in this utility is to support the use of KVM for
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* post-mortem debugging of the multicast code.
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*/
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#ifdef WITH_KVM
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#ifdef INET
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static void if_addrlist(struct ifaddr *);
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static struct in_multi *
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in_multientry(struct in_multi *);
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#endif /* INET */
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#ifdef INET6
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static void if6_addrlist(struct ifaddr *);
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static struct in6_multi *
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in6_multientry(struct in6_multi *);
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#endif /* INET6 */
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static void kread(u_long, void *, int);
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static void ll_addrlist(struct ifaddr *);
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static int ifmcstat_kvm(const char *kernel, const char *core);
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#define KREAD(addr, buf, type) \
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kread((u_long)addr, (void *)buf, sizeof(type))
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kvm_t *kvmd;
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struct nlist nl[] = {
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{ "_ifnet", 0, 0, 0, 0, },
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{ "", 0, 0, 0, 0, },
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};
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#define N_IFNET 0
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#endif /* WITH_KVM */
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static int ifmcstat_getifmaddrs(void);
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#ifdef INET
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static void in_ifinfo(struct igmp_ifinfo *);
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static const char * inm_mode(u_int mode);
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#endif
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#ifdef INET6
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static void in6_ifinfo(struct mld_ifinfo *);
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static const char * inet6_n2a(struct in6_addr *);
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#endif
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int main(int, char **);
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static void
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usage()
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{
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fprintf(stderr,
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"usage: ifmcstat [-i interface] [-f address family]"
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" [-v]"
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#ifdef WITH_KVM
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" [-K] [-M core] [-N system]"
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#endif
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"\n");
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exit(EX_USAGE);
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}
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static const char *options = "i:f:vM:N:"
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#ifdef WITH_KVM
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"K"
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#endif
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;
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int
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main(int argc, char **argv)
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{
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int c, error;
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#ifdef WITH_KVM
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const char *kernel = NULL;
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const char *core = NULL;
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#endif
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while ((c = getopt(argc, argv, options)) != -1) {
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switch (c) {
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case 'i':
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if ((ifindex = if_nametoindex(optarg)) == 0) {
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fprintf(stderr, "%s: unknown interface\n",
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optarg);
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exit(EX_NOHOST);
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}
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break;
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case 'f':
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#ifdef INET
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if (strcmp(optarg, "inet") == 0) {
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af = AF_INET;
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break;
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}
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#endif
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#ifdef INET6
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if (strcmp(optarg, "inet6") == 0) {
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af = AF_INET6;
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break;
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}
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#endif
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if (strcmp(optarg, "link") == 0) {
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af = AF_LINK;
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break;
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}
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fprintf(stderr, "%s: unknown address family\n", optarg);
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exit(EX_USAGE);
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/*NOTREACHED*/
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break;
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#ifdef WITH_KVM
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case 'K':
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++Kflag;
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break;
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#endif
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case 'v':
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++vflag;
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break;
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#ifdef WITH_KVM
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case 'M':
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core = strdup(optarg);
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break;
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case 'N':
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kernel = strdup(optarg);
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break;
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#endif
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default:
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usage();
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break;
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/*NOTREACHED*/
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}
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}
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if (af == AF_LINK && vflag)
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usage();
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#ifdef WITH_KVM
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if (Kflag)
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error = ifmcstat_kvm(kernel, core);
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/*
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* If KVM failed, and user did not explicitly specify a core file,
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* or force KVM backend to be disabled, try the sysctl backend.
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*/
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if (!Kflag || (error != 0 && (core == NULL && kernel == NULL)))
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#endif
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error = ifmcstat_getifmaddrs();
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if (error != 0)
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exit(EX_OSERR);
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exit(EX_OK);
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/*NOTREACHED*/
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}
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#ifdef INET
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static void
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in_ifinfo(struct igmp_ifinfo *igi)
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{
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printf("\t");
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switch (igi->igi_version) {
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case IGMP_VERSION_1:
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case IGMP_VERSION_2:
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case IGMP_VERSION_3:
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printf("igmpv%d", igi->igi_version);
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break;
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default:
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printf("igmpv?(%d)", igi->igi_version);
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break;
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}
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printb(" flags", igi->igi_flags, "\020\1SILENT\2LOOPBACK");
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if (igi->igi_version == IGMP_VERSION_3) {
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printf(" rv %u qi %u qri %u uri %u",
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igi->igi_rv, igi->igi_qi, igi->igi_qri, igi->igi_uri);
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}
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if (vflag >= 2) {
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printf(" v1timer %u v2timer %u v3timer %u",
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igi->igi_v1_timer, igi->igi_v2_timer, igi->igi_v3_timer);
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}
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printf("\n");
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}
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static const char *inm_modes[] = {
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"undefined",
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"include",
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"exclude",
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};
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static const char *
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inm_mode(u_int mode)
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{
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if (mode >= MCAST_UNDEFINED && mode <= MCAST_EXCLUDE)
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return (inm_modes[mode]);
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return (NULL);
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}
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#endif /* INET */
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#ifdef WITH_KVM
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static int
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ifmcstat_kvm(const char *kernel, const char *core)
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{
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char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ];
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struct ifnet *ifp, *nifp, ifnet;
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if ((kvmd = kvm_openfiles(kernel, core, NULL, O_RDONLY, buf)) ==
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NULL) {
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perror("kvm_openfiles");
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return (-1);
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}
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if (kvm_nlist(kvmd, nl) < 0) {
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perror("kvm_nlist");
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return (-1);
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}
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if (nl[N_IFNET].n_value == 0) {
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printf("symbol %s not found\n", nl[N_IFNET].n_name);
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return (-1);
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}
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KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
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while (ifp) {
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KREAD(ifp, &ifnet, struct ifnet);
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nifp = ifnet.if_link.tqe_next;
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if (ifindex && ifindex != ifnet.if_index)
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goto next;
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printf("%s:\n", if_indextoname(ifnet.if_index, ifname));
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#ifdef INET
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if_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
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#endif
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#ifdef INET6
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if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
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#endif
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if (vflag)
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ll_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
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next:
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ifp = nifp;
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}
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return (0);
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}
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static void
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kread(u_long addr, void *buf, int len)
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{
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if (kvm_read(kvmd, addr, buf, len) != len) {
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perror("kvm_read");
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exit(EX_OSERR);
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}
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}
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static void
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ll_addrlist(struct ifaddr *ifap)
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{
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char addrbuf[NI_MAXHOST];
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struct ifaddr ifa;
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struct sockaddr sa;
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struct sockaddr_dl sdl;
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struct ifaddr *ifap0;
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if (af && af != AF_LINK)
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return;
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ifap0 = ifap;
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while (ifap) {
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KREAD(ifap, &ifa, struct ifaddr);
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if (ifa.ifa_addr == NULL)
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goto nextifap;
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KREAD(ifa.ifa_addr, &sa, struct sockaddr);
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if (sa.sa_family != PF_LINK)
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goto nextifap;
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KREAD(ifa.ifa_addr, &sdl, struct sockaddr_dl);
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if (sdl.sdl_alen == 0)
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goto nextifap;
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addrbuf[0] = '\0';
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getnameinfo((struct sockaddr *)&sdl, sdl.sdl_len,
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addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
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printf("\tlink %s\n", addrbuf);
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nextifap:
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ifap = ifa.ifa_link.tqe_next;
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}
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if (ifap0) {
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struct ifnet ifnet;
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struct ifmultiaddr ifm, *ifmp = 0;
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KREAD(ifap0, &ifa, struct ifaddr);
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KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
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if (TAILQ_FIRST(&ifnet.if_multiaddrs))
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ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
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while (ifmp) {
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KREAD(ifmp, &ifm, struct ifmultiaddr);
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if (ifm.ifma_addr == NULL)
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goto nextmulti;
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KREAD(ifm.ifma_addr, &sa, struct sockaddr);
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if (sa.sa_family != AF_LINK)
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goto nextmulti;
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KREAD(ifm.ifma_addr, &sdl, struct sockaddr_dl);
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addrbuf[0] = '\0';
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getnameinfo((struct sockaddr *)&sdl,
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sdl.sdl_len, addrbuf, sizeof(addrbuf),
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NULL, 0, NI_NUMERICHOST);
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printf("\t\tgroup %s refcnt %d\n",
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addrbuf, ifm.ifma_refcount);
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nextmulti:
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ifmp = TAILQ_NEXT(&ifm, ifma_link);
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}
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}
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}
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#ifdef INET6
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static void
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if6_addrlist(struct ifaddr *ifap)
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{
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struct ifnet ifnet;
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struct ifaddr ifa;
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struct sockaddr sa;
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struct in6_ifaddr if6a;
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struct ifaddr *ifap0;
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if (af && af != AF_INET6)
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return;
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ifap0 = ifap;
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while (ifap) {
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KREAD(ifap, &ifa, struct ifaddr);
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if (ifa.ifa_addr == NULL)
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goto nextifap;
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KREAD(ifa.ifa_addr, &sa, struct sockaddr);
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if (sa.sa_family != PF_INET6)
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goto nextifap;
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KREAD(ifap, &if6a, struct in6_ifaddr);
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printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr));
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/*
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* Print per-link MLD information, if available.
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*/
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if (ifa.ifa_ifp != NULL) {
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struct in6_ifextra ie;
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struct mld_ifinfo mli;
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KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
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KREAD(ifnet.if_afdata[AF_INET6], &ie,
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struct in6_ifextra);
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if (ie.mld_ifinfo != NULL) {
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KREAD(ie.mld_ifinfo, &mli, struct mld_ifinfo);
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in6_ifinfo(&mli);
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}
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}
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nextifap:
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ifap = ifa.ifa_link.tqe_next;
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}
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if (ifap0) {
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struct ifnet ifnet;
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struct ifmultiaddr ifm, *ifmp = 0;
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struct sockaddr_dl sdl;
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|
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KREAD(ifap0, &ifa, struct ifaddr);
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KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
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if (TAILQ_FIRST(&ifnet.if_multiaddrs))
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ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
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while (ifmp) {
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KREAD(ifmp, &ifm, struct ifmultiaddr);
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if (ifm.ifma_addr == NULL)
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goto nextmulti;
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KREAD(ifm.ifma_addr, &sa, struct sockaddr);
|
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if (sa.sa_family != AF_INET6)
|
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goto nextmulti;
|
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(void)in6_multientry((struct in6_multi *)
|
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ifm.ifma_protospec);
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if (ifm.ifma_lladdr == 0)
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goto nextmulti;
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KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
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printf("\t\t\tmcast-macaddr %s refcnt %d\n",
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ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
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ifm.ifma_refcount);
|
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nextmulti:
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ifmp = TAILQ_NEXT(&ifm, ifma_link);
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}
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}
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}
|
|
|
|
static struct in6_multi *
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in6_multientry(struct in6_multi *mc)
|
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{
|
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struct in6_multi multi;
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|
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KREAD(mc, &multi, struct in6_multi);
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printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr));
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printf(" refcnt %u\n", multi.in6m_refcount);
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|
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return (multi.in6m_entry.le_next);
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}
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|
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#endif /* INET6 */
|
|
|
|
#ifdef INET
|
|
|
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static void
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if_addrlist(struct ifaddr *ifap)
|
|
{
|
|
struct ifaddr ifa;
|
|
struct ifnet ifnet;
|
|
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));
|
|
/*
|
|
* Print per-link IGMP information, if available.
|
|
*/
|
|
if (ifa.ifa_ifp != NULL) {
|
|
struct in_ifinfo ii;
|
|
struct igmp_ifinfo igi;
|
|
|
|
KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
|
|
KREAD(ifnet.if_afdata[AF_INET], &ii, struct in_ifinfo);
|
|
if (ii.ii_igmp != NULL) {
|
|
KREAD(ii.ii_igmp, &igi, struct igmp_ifinfo);
|
|
in_ifinfo(&igi);
|
|
}
|
|
}
|
|
nextifap:
|
|
ifap = ifa.ifa_link.tqe_next;
|
|
}
|
|
if (ifap0) {
|
|
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 refcnt %d\n",
|
|
ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
|
|
ifm.ifma_refcount);
|
|
nextmulti:
|
|
ifmp = TAILQ_NEXT(&ifm, ifma_link);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const char *inm_states[] = {
|
|
"not-member",
|
|
"silent",
|
|
"idle",
|
|
"lazy",
|
|
"sleeping",
|
|
"awakening",
|
|
"query-pending",
|
|
"sg-query-pending",
|
|
"leaving"
|
|
};
|
|
|
|
static const char *
|
|
inm_state(u_int state)
|
|
{
|
|
|
|
if (state >= IGMP_NOT_MEMBER && state <= IGMP_LEAVING_MEMBER)
|
|
return (inm_states[state]);
|
|
return (NULL);
|
|
}
|
|
|
|
#if 0
|
|
static struct ip_msource *
|
|
ims_min_kvm(struct in_multi *pinm)
|
|
{
|
|
struct ip_msource ims0;
|
|
struct ip_msource *tmp, *parent;
|
|
|
|
parent = NULL;
|
|
tmp = RB_ROOT(&pinm->inm_srcs);
|
|
while (tmp) {
|
|
parent = tmp;
|
|
KREAD(tmp, &ims0, struct ip_msource);
|
|
tmp = RB_LEFT(&ims0, ims_link);
|
|
}
|
|
return (parent); /* kva */
|
|
}
|
|
|
|
/* XXX This routine is buggy. See RB_NEXT in sys/tree.h. */
|
|
static struct ip_msource *
|
|
ims_next_kvm(struct ip_msource *ims)
|
|
{
|
|
struct ip_msource ims0, ims1;
|
|
struct ip_msource *tmp;
|
|
|
|
KREAD(ims, &ims0, struct ip_msource);
|
|
if (RB_RIGHT(&ims0, ims_link)) {
|
|
ims = RB_RIGHT(&ims0, ims_link);
|
|
KREAD(ims, &ims1, struct ip_msource);
|
|
while ((tmp = RB_LEFT(&ims1, ims_link))) {
|
|
KREAD(tmp, &ims0, struct ip_msource);
|
|
ims = RB_LEFT(&ims0, ims_link);
|
|
}
|
|
} else {
|
|
tmp = RB_PARENT(&ims0, ims_link);
|
|
if (tmp) {
|
|
KREAD(tmp, &ims1, struct ip_msource);
|
|
if (ims == RB_LEFT(&ims1, ims_link))
|
|
ims = tmp;
|
|
} else {
|
|
while ((tmp = RB_PARENT(&ims0, ims_link))) {
|
|
KREAD(tmp, &ims1, struct ip_msource);
|
|
if (ims == RB_RIGHT(&ims1, ims_link)) {
|
|
ims = tmp;
|
|
KREAD(ims, &ims0, struct ip_msource);
|
|
} else
|
|
break;
|
|
}
|
|
ims = RB_PARENT(&ims0, ims_link);
|
|
}
|
|
}
|
|
return (ims); /* kva */
|
|
}
|
|
|
|
static void
|
|
inm_print_sources_kvm(struct in_multi *pinm)
|
|
{
|
|
struct ip_msource ims0;
|
|
struct ip_msource *ims;
|
|
struct in_addr src;
|
|
int cnt;
|
|
uint8_t fmode;
|
|
|
|
cnt = 0;
|
|
fmode = pinm->inm_st[1].iss_fmode;
|
|
if (fmode == MCAST_UNDEFINED)
|
|
return;
|
|
for (ims = ims_min_kvm(pinm); ims != NULL; ims = ims_next_kvm(ims)) {
|
|
if (cnt == 0)
|
|
printf(" srcs ");
|
|
KREAD(ims, &ims0, struct ip_msource);
|
|
/* Only print sources in-mode at t1. */
|
|
if (fmode != ims_get_mode(pinm, ims, 1))
|
|
continue;
|
|
src.s_addr = htonl(ims0.ims_haddr);
|
|
printf("%s%s", (cnt++ == 0 ? "" : ","), inet_ntoa(src));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static struct in_multi *
|
|
in_multientry(struct in_multi *pinm)
|
|
{
|
|
struct in_multi inm;
|
|
const char *state, *mode;
|
|
|
|
KREAD(pinm, &inm, struct in_multi);
|
|
printf("\t\tgroup %s", inet_ntoa(inm.inm_addr));
|
|
printf(" refcnt %u", inm.inm_refcount);
|
|
|
|
state = inm_state(inm.inm_state);
|
|
if (state)
|
|
printf(" state %s", state);
|
|
else
|
|
printf(" state (%d)", inm.inm_state);
|
|
|
|
mode = inm_mode(inm.inm_st[1].iss_fmode);
|
|
if (mode)
|
|
printf(" mode %s", mode);
|
|
else
|
|
printf(" mode (%d)", inm.inm_st[1].iss_fmode);
|
|
|
|
if (vflag >= 2) {
|
|
printf(" asm %u ex %u in %u rec %u",
|
|
(u_int)inm.inm_st[1].iss_asm,
|
|
(u_int)inm.inm_st[1].iss_ex,
|
|
(u_int)inm.inm_st[1].iss_in,
|
|
(u_int)inm.inm_st[1].iss_rec);
|
|
}
|
|
|
|
#if 0
|
|
/* Buggy. */
|
|
if (vflag)
|
|
inm_print_sources_kvm(&inm);
|
|
#endif
|
|
|
|
printf("\n");
|
|
return (NULL);
|
|
}
|
|
|
|
#endif /* INET */
|
|
|
|
#endif /* WITH_KVM */
|
|
|
|
#ifdef INET6
|
|
|
|
static void
|
|
in6_ifinfo(struct mld_ifinfo *mli)
|
|
{
|
|
|
|
printf("\t");
|
|
switch (mli->mli_version) {
|
|
case MLD_VERSION_1:
|
|
case MLD_VERSION_2:
|
|
printf("mldv%d", mli->mli_version);
|
|
break;
|
|
default:
|
|
printf("mldv?(%d)", mli->mli_version);
|
|
break;
|
|
}
|
|
printb(" flags", mli->mli_flags, "\020\1SILENT");
|
|
if (mli->mli_version == MLD_VERSION_2) {
|
|
printf(" rv %u qi %u qri %u uri %u",
|
|
mli->mli_rv, mli->mli_qi, mli->mli_qri, mli->mli_uri);
|
|
}
|
|
if (vflag >= 2) {
|
|
printf(" v1timer %u v2timer %u", mli->mli_v1_timer,
|
|
mli->mli_v2_timer);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
static const char *
|
|
inet6_n2a(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)");
|
|
}
|
|
}
|
|
#endif /* INET6 */
|
|
|
|
#ifdef INET
|
|
/*
|
|
* Retrieve per-group source filter mode and lists via sysctl.
|
|
*/
|
|
static void
|
|
inm_print_sources_sysctl(uint32_t ifindex, struct in_addr gina)
|
|
{
|
|
#define MAX_SYSCTL_TRY 5
|
|
int mib[7];
|
|
int ntry = 0;
|
|
size_t mibsize;
|
|
size_t len;
|
|
size_t needed;
|
|
size_t cnt;
|
|
int i;
|
|
char *buf;
|
|
struct in_addr *pina;
|
|
uint32_t *p;
|
|
uint32_t fmode;
|
|
const char *modestr;
|
|
|
|
mibsize = sizeof(mib) / sizeof(mib[0]);
|
|
if (sysctlnametomib("net.inet.ip.mcast.filters", mib, &mibsize) == -1) {
|
|
perror("sysctlnametomib");
|
|
return;
|
|
}
|
|
|
|
needed = 0;
|
|
mib[5] = ifindex;
|
|
mib[6] = gina.s_addr; /* 32 bits wide */
|
|
mibsize = sizeof(mib) / sizeof(mib[0]);
|
|
do {
|
|
if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
|
|
perror("sysctl net.inet.ip.mcast.filters");
|
|
return;
|
|
}
|
|
if ((buf = malloc(needed)) == NULL) {
|
|
perror("malloc");
|
|
return;
|
|
}
|
|
if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
|
|
if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
|
|
perror("sysctl");
|
|
goto out_free;
|
|
}
|
|
free(buf);
|
|
buf = NULL;
|
|
}
|
|
} while (buf == NULL);
|
|
|
|
len = needed;
|
|
if (len < sizeof(uint32_t)) {
|
|
perror("sysctl");
|
|
goto out_free;
|
|
}
|
|
|
|
p = (uint32_t *)buf;
|
|
fmode = *p++;
|
|
len -= sizeof(uint32_t);
|
|
|
|
modestr = inm_mode(fmode);
|
|
if (modestr)
|
|
printf(" mode %s", modestr);
|
|
else
|
|
printf(" mode (%u)", fmode);
|
|
|
|
if (vflag == 0)
|
|
goto out_free;
|
|
|
|
cnt = len / sizeof(struct in_addr);
|
|
pina = (struct in_addr *)p;
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
if (i == 0)
|
|
printf(" srcs ");
|
|
fprintf(stdout, "%s%s", (i == 0 ? "" : ","),
|
|
inet_ntoa(*pina++));
|
|
len -= sizeof(struct in_addr);
|
|
}
|
|
if (len > 0) {
|
|
fprintf(stderr, "warning: %u trailing bytes from %s\n",
|
|
(unsigned int)len, "net.inet.ip.mcast.filters");
|
|
}
|
|
|
|
out_free:
|
|
free(buf);
|
|
#undef MAX_SYSCTL_TRY
|
|
}
|
|
|
|
#endif /* INET */
|
|
|
|
#ifdef INET6
|
|
/*
|
|
* Retrieve MLD per-group source filter mode and lists via sysctl.
|
|
*
|
|
* Note: The 128-bit IPv6 group address needs to be segmented into
|
|
* 32-bit pieces for marshaling to sysctl. So the MIB name ends
|
|
* up looking like this:
|
|
* a.b.c.d.e.ifindex.g[0].g[1].g[2].g[3]
|
|
* Assumes that pgroup originated from the kernel, so its components
|
|
* are already in network-byte order.
|
|
*/
|
|
static void
|
|
in6m_print_sources_sysctl(uint32_t ifindex, struct in6_addr *pgroup)
|
|
{
|
|
#define MAX_SYSCTL_TRY 5
|
|
char addrbuf[INET6_ADDRSTRLEN];
|
|
int mib[10];
|
|
int ntry = 0;
|
|
int *pi;
|
|
size_t mibsize;
|
|
size_t len;
|
|
size_t needed;
|
|
size_t cnt;
|
|
int i;
|
|
char *buf;
|
|
struct in6_addr *pina;
|
|
uint32_t *p;
|
|
uint32_t fmode;
|
|
const char *modestr;
|
|
|
|
mibsize = sizeof(mib) / sizeof(mib[0]);
|
|
if (sysctlnametomib("net.inet6.ip6.mcast.filters", mib,
|
|
&mibsize) == -1) {
|
|
perror("sysctlnametomib");
|
|
return;
|
|
}
|
|
|
|
needed = 0;
|
|
mib[5] = ifindex;
|
|
pi = (int *)pgroup;
|
|
for (i = 0; i < 4; i++)
|
|
mib[6 + i] = *pi++;
|
|
|
|
mibsize = sizeof(mib) / sizeof(mib[0]);
|
|
do {
|
|
if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
|
|
perror("sysctl net.inet6.ip6.mcast.filters");
|
|
return;
|
|
}
|
|
if ((buf = malloc(needed)) == NULL) {
|
|
perror("malloc");
|
|
return;
|
|
}
|
|
if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
|
|
if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
|
|
perror("sysctl");
|
|
goto out_free;
|
|
}
|
|
free(buf);
|
|
buf = NULL;
|
|
}
|
|
} while (buf == NULL);
|
|
|
|
len = needed;
|
|
if (len < sizeof(uint32_t)) {
|
|
perror("sysctl");
|
|
goto out_free;
|
|
}
|
|
|
|
p = (uint32_t *)buf;
|
|
fmode = *p++;
|
|
len -= sizeof(uint32_t);
|
|
|
|
modestr = inm_mode(fmode);
|
|
if (modestr)
|
|
printf(" mode %s", modestr);
|
|
else
|
|
printf(" mode (%u)", fmode);
|
|
|
|
if (vflag == 0)
|
|
goto out_free;
|
|
|
|
cnt = len / sizeof(struct in6_addr);
|
|
pina = (struct in6_addr *)p;
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
if (i == 0)
|
|
printf(" srcs ");
|
|
inet_ntop(AF_INET6, (const char *)pina++, addrbuf,
|
|
INET6_ADDRSTRLEN);
|
|
fprintf(stdout, "%s%s", (i == 0 ? "" : ","), addrbuf);
|
|
len -= sizeof(struct in6_addr);
|
|
}
|
|
if (len > 0) {
|
|
fprintf(stderr, "warning: %u trailing bytes from %s\n",
|
|
(unsigned int)len, "net.inet6.ip6.mcast.filters");
|
|
}
|
|
|
|
out_free:
|
|
free(buf);
|
|
#undef MAX_SYSCTL_TRY
|
|
}
|
|
#endif /* INET6 */
|
|
|
|
static int
|
|
ifmcstat_getifmaddrs(void)
|
|
{
|
|
char thisifname[IFNAMSIZ];
|
|
char addrbuf[NI_MAXHOST];
|
|
struct ifaddrs *ifap, *ifa;
|
|
struct ifmaddrs *ifmap, *ifma;
|
|
sockunion_t lastifasa;
|
|
sockunion_t *psa, *pgsa, *pllsa, *pifasa;
|
|
char *pcolon;
|
|
char *pafname;
|
|
uint32_t lastifindex, thisifindex;
|
|
int error;
|
|
|
|
error = 0;
|
|
ifap = NULL;
|
|
ifmap = NULL;
|
|
lastifindex = 0;
|
|
thisifindex = 0;
|
|
lastifasa.ss.ss_family = AF_UNSPEC;
|
|
|
|
if (getifaddrs(&ifap) != 0) {
|
|
warn("getifmaddrs");
|
|
return (-1);
|
|
}
|
|
|
|
if (getifmaddrs(&ifmap) != 0) {
|
|
warn("getifmaddrs");
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
for (ifma = ifmap; ifma; ifma = ifma->ifma_next) {
|
|
error = 0;
|
|
if (ifma->ifma_name == NULL || ifma->ifma_addr == NULL)
|
|
continue;
|
|
|
|
psa = (sockunion_t *)ifma->ifma_name;
|
|
if (psa->sa.sa_family != AF_LINK) {
|
|
fprintf(stderr,
|
|
"WARNING: Kernel returned invalid data.\n");
|
|
error = -1;
|
|
break;
|
|
}
|
|
|
|
/* Filter on interface name. */
|
|
thisifindex = psa->sdl.sdl_index;
|
|
if (ifindex != 0 && thisifindex != ifindex)
|
|
continue;
|
|
|
|
/* Filter on address family. */
|
|
pgsa = (sockunion_t *)ifma->ifma_addr;
|
|
if (af != 0 && pgsa->sa.sa_family != af)
|
|
continue;
|
|
|
|
strlcpy(thisifname, link_ntoa(&psa->sdl), IFNAMSIZ);
|
|
pcolon = strchr(thisifname, ':');
|
|
if (pcolon)
|
|
*pcolon = '\0';
|
|
|
|
/* Only print the banner for the first ifmaddrs entry. */
|
|
if (lastifindex == 0 || lastifindex != thisifindex) {
|
|
lastifindex = thisifindex;
|
|
fprintf(stdout, "%s:\n", thisifname);
|
|
}
|
|
|
|
/*
|
|
* Currently, multicast joins only take place on the
|
|
* primary IPv4 address, and only on the link-local IPv6
|
|
* address, as per IGMPv2/3 and MLDv1/2 semantics.
|
|
* Therefore, we only look up the primary address on
|
|
* the first pass.
|
|
*/
|
|
pifasa = NULL;
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
if ((strcmp(ifa->ifa_name, thisifname) != 0) ||
|
|
(ifa->ifa_addr == NULL) ||
|
|
(ifa->ifa_addr->sa_family != pgsa->sa.sa_family))
|
|
continue;
|
|
/*
|
|
* For AF_INET6 only the link-local address should
|
|
* be returned. If built without IPv6 support,
|
|
* skip this address entirely.
|
|
*/
|
|
pifasa = (sockunion_t *)ifa->ifa_addr;
|
|
if (pifasa->sa.sa_family == AF_INET6
|
|
#ifdef INET6
|
|
&& !IN6_IS_ADDR_LINKLOCAL(&pifasa->sin6.sin6_addr)
|
|
#endif
|
|
) {
|
|
pifasa = NULL;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (pifasa == NULL)
|
|
continue; /* primary address not found */
|
|
|
|
if (!vflag && pifasa->sa.sa_family == AF_LINK)
|
|
continue;
|
|
|
|
/* Parse and print primary address, if not already printed. */
|
|
if (lastifasa.ss.ss_family == AF_UNSPEC ||
|
|
((lastifasa.ss.ss_family == AF_LINK &&
|
|
!sa_dl_equal(&lastifasa.sa, &pifasa->sa)) ||
|
|
!sa_equal(&lastifasa.sa, &pifasa->sa))) {
|
|
|
|
switch (pifasa->sa.sa_family) {
|
|
case AF_INET:
|
|
pafname = "inet";
|
|
break;
|
|
case AF_INET6:
|
|
pafname = "inet6";
|
|
break;
|
|
case AF_LINK:
|
|
pafname = "link";
|
|
break;
|
|
default:
|
|
pafname = "unknown";
|
|
break;
|
|
}
|
|
|
|
switch (pifasa->sa.sa_family) {
|
|
case AF_INET6:
|
|
#ifdef INET6
|
|
{
|
|
const char *p =
|
|
inet6_n2a(&pifasa->sin6.sin6_addr);
|
|
strlcpy(addrbuf, p, sizeof(addrbuf));
|
|
break;
|
|
}
|
|
#else
|
|
/* FALLTHROUGH */
|
|
#endif
|
|
case AF_INET:
|
|
case AF_LINK:
|
|
error = getnameinfo(&pifasa->sa,
|
|
pifasa->sa.sa_len,
|
|
addrbuf, sizeof(addrbuf), NULL, 0,
|
|
NI_NUMERICHOST);
|
|
if (error)
|
|
perror("getnameinfo");
|
|
break;
|
|
default:
|
|
addrbuf[0] = '\0';
|
|
break;
|
|
}
|
|
|
|
fprintf(stdout, "\t%s %s\n", pafname, addrbuf);
|
|
#ifdef INET
|
|
/*
|
|
* Print per-link IGMP information, if available.
|
|
*/
|
|
if (pifasa->sa.sa_family == AF_INET) {
|
|
struct igmp_ifinfo igi;
|
|
size_t mibsize, len;
|
|
int mib[5];
|
|
|
|
mibsize = sizeof(mib) / sizeof(mib[0]);
|
|
if (sysctlnametomib("net.inet.igmp.ifinfo",
|
|
mib, &mibsize) == -1) {
|
|
perror("sysctlnametomib");
|
|
goto next_ifnet;
|
|
}
|
|
mib[mibsize] = thisifindex;
|
|
len = sizeof(struct igmp_ifinfo);
|
|
if (sysctl(mib, mibsize + 1, &igi, &len, NULL,
|
|
0) == -1) {
|
|
perror("sysctl net.inet.igmp.ifinfo");
|
|
goto next_ifnet;
|
|
}
|
|
in_ifinfo(&igi);
|
|
}
|
|
#endif /* INET */
|
|
#ifdef INET6
|
|
/*
|
|
* Print per-link MLD information, if available.
|
|
*/
|
|
if (pifasa->sa.sa_family == AF_INET6) {
|
|
struct mld_ifinfo mli;
|
|
size_t mibsize, len;
|
|
int mib[5];
|
|
|
|
mibsize = sizeof(mib) / sizeof(mib[0]);
|
|
if (sysctlnametomib("net.inet6.mld.ifinfo",
|
|
mib, &mibsize) == -1) {
|
|
perror("sysctlnametomib");
|
|
goto next_ifnet;
|
|
}
|
|
mib[mibsize] = thisifindex;
|
|
len = sizeof(struct mld_ifinfo);
|
|
if (sysctl(mib, mibsize + 1, &mli, &len, NULL,
|
|
0) == -1) {
|
|
perror("sysctl net.inet6.mld.ifinfo");
|
|
goto next_ifnet;
|
|
}
|
|
in6_ifinfo(&mli);
|
|
}
|
|
#endif /* INET6 */
|
|
#if defined(INET) || defined(INET6)
|
|
next_ifnet:
|
|
#endif
|
|
lastifasa = *pifasa;
|
|
}
|
|
|
|
/* Print this group address. */
|
|
#ifdef INET6
|
|
if (pgsa->sa.sa_family == AF_INET6) {
|
|
const char *p = inet6_n2a(&pgsa->sin6.sin6_addr);
|
|
strlcpy(addrbuf, p, sizeof(addrbuf));
|
|
} else
|
|
#endif
|
|
{
|
|
error = getnameinfo(&pgsa->sa, pgsa->sa.sa_len,
|
|
addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
|
|
if (error)
|
|
perror("getnameinfo");
|
|
}
|
|
|
|
fprintf(stdout, "\t\tgroup %s", addrbuf);
|
|
#ifdef INET
|
|
if (pgsa->sa.sa_family == AF_INET) {
|
|
inm_print_sources_sysctl(thisifindex,
|
|
pgsa->sin.sin_addr);
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
if (pgsa->sa.sa_family == AF_INET6) {
|
|
in6m_print_sources_sysctl(thisifindex,
|
|
&pgsa->sin6.sin6_addr);
|
|
}
|
|
#endif
|
|
fprintf(stdout, "\n");
|
|
|
|
/* Link-layer mapping, if present. */
|
|
pllsa = (sockunion_t *)ifma->ifma_lladdr;
|
|
if (pllsa != NULL) {
|
|
error = getnameinfo(&pllsa->sa, pllsa->sa.sa_len,
|
|
addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
|
|
fprintf(stdout, "\t\t\tmcast-macaddr %s\n", addrbuf);
|
|
}
|
|
}
|
|
out:
|
|
if (ifmap != NULL)
|
|
freeifmaddrs(ifmap);
|
|
if (ifap != NULL)
|
|
freeifaddrs(ifap);
|
|
|
|
return (error);
|
|
}
|