853 lines
20 KiB
C
853 lines
20 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2007-2009 Bruce Simpson.
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* Copyright (c) 2000 Wilbert De Graaf.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* 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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/*
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* Diagnostic and test utility for multicast sockets.
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* XXX: This file currently assumes INET support in the base system.
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* TODO: Support embedded KAME Scope ID in IPv6 group addresses.
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* TODO: Use IPv4 link-local address when source address selection
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* is implemented; use MCAST_JOIN_SOURCE for IPv4.
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*/
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/ethernet.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#endif
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#ifdef INET6
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#include <netinet/in.h>
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#include <netinet/ip6.h>
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#endif
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#include <assert.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <err.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <ifaddrs.h>
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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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union mrequnion {
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#ifdef INET
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struct ip_mreq mr;
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struct ip_mreq_source mrs;
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#endif
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#ifdef INET6
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struct ipv6_mreq mr6;
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struct group_source_req gr;
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#endif
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};
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typedef union mrequnion mrequnion_t;
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#define MAX_ADDRS 20
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#define STR_SIZE 20
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#define LINE_LENGTH 80
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#ifdef INET
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static int __ifindex_to_primary_ip(const uint32_t, struct in_addr *);
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#endif
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static uint32_t parse_cmd_args(sockunion_t *, sockunion_t *,
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const char *, const char *, const char *);
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static void process_file(char *, int, int);
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static void process_cmd(char*, int, int, FILE *);
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static int su_cmp(const void *, const void *);
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static void usage(void);
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/*
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* Ordering predicate for qsort().
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*/
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static int
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su_cmp(const void *a, const void *b)
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{
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const sockunion_t *sua = (const sockunion_t *)a;
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const sockunion_t *sub = (const sockunion_t *)b;
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assert(sua->sa.sa_family == sub->sa.sa_family);
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switch (sua->sa.sa_family) {
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#ifdef INET
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case AF_INET:
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return ((int)(sua->sin.sin_addr.s_addr -
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sub->sin.sin_addr.s_addr));
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break;
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#endif
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#ifdef INET6
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case AF_INET6:
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return (memcmp(&sua->sin6.sin6_addr, &sub->sin6.sin6_addr,
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sizeof(struct in6_addr)));
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break;
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#endif
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default:
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break;
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}
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assert(sua->sa.sa_len == sub->sa.sa_len);
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return (memcmp(sua, sub, sua->sa.sa_len));
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}
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#ifdef INET
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/*
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* Internal: Map an interface index to primary IPv4 address.
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* This is somewhat inefficient. This is a useful enough operation
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* that it probably belongs in the C library.
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* Return zero if found, -1 on error, 1 on not found.
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*/
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static int
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__ifindex_to_primary_ip(const uint32_t ifindex, struct in_addr *pina)
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{
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char ifname[IFNAMSIZ];
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struct ifaddrs *ifa;
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struct ifaddrs *ifaddrs;
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sockunion_t *psu;
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int retval;
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assert(ifindex != 0);
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retval = -1;
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if (if_indextoname(ifindex, ifname) == NULL)
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return (retval);
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if (getifaddrs(&ifaddrs) < 0)
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return (retval);
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/*
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* Find the ifaddr entry corresponding to the interface name,
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* and return the first matching IPv4 address.
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*/
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retval = 1;
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for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
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if (strcmp(ifa->ifa_name, ifname) != 0)
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continue;
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psu = (sockunion_t *)ifa->ifa_addr;
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if (psu && psu->sa.sa_family == AF_INET) {
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retval = 0;
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memcpy(pina, &psu->sin.sin_addr,
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sizeof(struct in_addr));
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break;
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}
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}
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if (retval != 0)
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errno = EADDRNOTAVAIL; /* XXX */
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freeifaddrs(ifaddrs);
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return (retval);
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}
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#endif /* INET */
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int
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main(int argc, char **argv)
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{
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char line[LINE_LENGTH];
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char *p;
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int i, s, s6;
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s = -1;
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s6 = -1;
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#ifdef INET
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s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if (s == -1 && errno != EAFNOSUPPORT)
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err(1, "can't open IPv4 socket");
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#endif
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#ifdef INET6
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s6 = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
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if (s6 == -1 && errno != EAFNOSUPPORT)
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err(1, "can't open IPv6 socket");
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#endif
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if (s == -1 && s6 == -1)
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errc(1, EPROTONOSUPPORT, "can't open socket");
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if (argc < 2) {
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if (isatty(STDIN_FILENO)) {
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printf("multicast membership test program; "
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"enter ? for list of commands\n");
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}
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do {
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if (fgets(line, sizeof(line), stdin) != NULL) {
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if (line[0] != 'f')
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process_cmd(line, s, s6, stdin);
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else {
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/* Get the filename */
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for (i = 1; isblank(line[i]); i++);
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if ((p = (char*)strchr(line, '\n'))
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!= NULL)
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*p = '\0';
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process_file(&line[i], s, s6);
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}
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}
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} while (!feof(stdin));
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} else {
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for (i = 1; i < argc; i++) {
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process_file(argv[i], s, s6);
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}
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}
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if (s != -1)
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close(s);
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if (s6 != -1)
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close(s6);
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exit (0);
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}
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static void
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process_file(char *fname, int s, int s6)
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{
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char line[80];
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FILE *fp;
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char *lineptr;
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fp = fopen(fname, "r");
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if (fp == NULL) {
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warn("fopen");
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return;
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}
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/* Skip comments and empty lines. */
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while (fgets(line, sizeof(line), fp) != NULL) {
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lineptr = line;
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while (isblank(*lineptr))
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lineptr++;
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if (*lineptr != '#' && *lineptr != '\n')
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process_cmd(lineptr, s, s6, fp);
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}
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fclose(fp);
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}
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/*
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* Parse join/leave/allow/block arguments, given:
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* str1: group (as AF_INET or AF_INET6 printable)
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* str2: ifname
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* str3: optional source address (may be NULL).
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* This argument must have the same parsed address family as str1.
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* Return the ifindex of ifname, or 0 if any parse element failed.
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*/
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static uint32_t
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parse_cmd_args(sockunion_t *psu, sockunion_t *psu2,
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const char *str1, const char *str2, const char *str3)
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{
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struct addrinfo hints;
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struct addrinfo *res;
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uint32_t ifindex;
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int af, error;
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assert(psu != NULL);
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assert(str1 != NULL);
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assert(str2 != NULL);
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af = AF_UNSPEC;
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ifindex = if_nametoindex(str2);
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if (ifindex == 0)
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return (0);
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memset(&hints, 0, sizeof(struct addrinfo));
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hints.ai_flags = AI_NUMERICHOST;
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hints.ai_family = PF_UNSPEC;
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hints.ai_socktype = SOCK_DGRAM;
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memset(psu, 0, sizeof(sockunion_t));
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psu->sa.sa_family = AF_UNSPEC;
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error = getaddrinfo(str1, "0", &hints, &res);
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if (error) {
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warnx("getaddrinfo: %s", gai_strerror(error));
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return (0);
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}
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assert(res != NULL);
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af = res->ai_family;
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memcpy(psu, res->ai_addr, res->ai_addrlen);
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freeaddrinfo(res);
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/* sscanf() may pass the empty string. */
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if (psu2 != NULL && str3 != NULL && *str3 != '\0') {
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memset(psu2, 0, sizeof(sockunion_t));
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psu2->sa.sa_family = AF_UNSPEC;
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/* look for following address family; str3 is *optional*. */
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hints.ai_family = af;
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error = getaddrinfo(str3, "0", &hints, &res);
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if (error) {
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warnx("getaddrinfo: %s", gai_strerror(error));
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ifindex = 0;
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} else {
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if (af != res->ai_family) {
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errno = EINVAL; /* XXX */
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ifindex = 0;
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}
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memcpy(psu2, res->ai_addr, res->ai_addrlen);
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freeaddrinfo(res);
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}
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}
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return (ifindex);
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}
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static __inline int
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af2sock(const int af, int s, int s6)
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{
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#ifdef INET
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if (af == AF_INET)
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return (s);
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#endif
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#ifdef INET6
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if (af == AF_INET6)
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return (s6);
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#endif
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return (-1);
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}
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static __inline int
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af2socklen(const int af)
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{
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#ifdef INET
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if (af == AF_INET)
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return (sizeof(struct sockaddr_in));
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#endif
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#ifdef INET6
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if (af == AF_INET6)
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return (sizeof(struct sockaddr_in6));
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#endif
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return (-1);
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}
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static void
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process_cmd(char *cmd, int s, int s6, FILE *fp __unused)
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{
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char str1[STR_SIZE];
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char str2[STR_SIZE];
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char str3[STR_SIZE];
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mrequnion_t mr;
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sockunion_t su, su2;
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struct ifreq ifr;
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char *line;
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char *toptname;
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void *optval;
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uint32_t fmode, ifindex;
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socklen_t optlen;
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size_t j;
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int af, error, f, flags, i, level, n, optname;
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af = AF_UNSPEC;
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su.sa.sa_family = AF_UNSPEC;
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su2.sa.sa_family = AF_UNSPEC;
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line = cmd;
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while (isblank(*++line))
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; /* Skip whitespace. */
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n = 0;
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switch (*cmd) {
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case '?':
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usage();
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break;
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case 'q':
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close(s);
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exit(0);
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case 's':
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if ((sscanf(line, "%d", &n) != 1) || (n < 1)) {
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printf("-1\n");
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break;
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}
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sleep(n);
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printf("ok\n");
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break;
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case 'j':
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case 'l':
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str3[0] = '\0';
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toptname = "";
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sscanf(line, "%s %s %s", str1, str2, str3);
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ifindex = parse_cmd_args(&su, &su2, str1, str2, str3);
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if (ifindex == 0) {
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printf("-1\n");
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break;
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}
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af = su.sa.sa_family;
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#ifdef INET
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if (af == AF_INET) {
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struct in_addr ina;
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error = __ifindex_to_primary_ip(ifindex, &ina);
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if (error != 0) {
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warn("primary_ip_lookup %s", str2);
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printf("-1\n");
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break;
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}
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level = IPPROTO_IP;
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if (su2.sa.sa_family != AF_UNSPEC) {
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mr.mrs.imr_multiaddr = su.sin.sin_addr;
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mr.mrs.imr_sourceaddr = su2.sin.sin_addr;
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mr.mrs.imr_interface = ina;
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optname = (*cmd == 'j') ?
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IP_ADD_SOURCE_MEMBERSHIP :
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IP_DROP_SOURCE_MEMBERSHIP;
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toptname = (*cmd == 'j') ?
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"IP_ADD_SOURCE_MEMBERSHIP" :
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"IP_DROP_SOURCE_MEMBERSHIP";
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optval = (void *)&mr.mrs;
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optlen = sizeof(mr.mrs);
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} else {
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mr.mr.imr_multiaddr = su.sin.sin_addr;
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mr.mr.imr_interface = ina;
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optname = (*cmd == 'j') ?
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IP_ADD_MEMBERSHIP : IP_DROP_MEMBERSHIP;
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toptname = (*cmd == 'j') ?
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"IP_ADD_MEMBERSHIP" : "IP_DROP_MEMBERSHIP";
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optval = (void *)&mr.mr;
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optlen = sizeof(mr.mr);
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}
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if (s < 0) {
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warnc(EPROTONOSUPPORT, "setsockopt %s",
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toptname);
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} else if (setsockopt(s, level, optname, optval,
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optlen) == 0) {
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printf("ok\n");
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break;
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} else {
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warn("setsockopt %s", toptname);
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}
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}
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#ifdef INET6
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else
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#endif /* INET with INET6 */
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#endif /* INET */
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#ifdef INET6
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if (af == AF_INET6) {
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level = IPPROTO_IPV6;
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if (su2.sa.sa_family != AF_UNSPEC) {
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mr.gr.gsr_interface = ifindex;
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mr.gr.gsr_group = su.ss;
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mr.gr.gsr_source = su2.ss;
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optname = (*cmd == 'j') ?
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MCAST_JOIN_SOURCE_GROUP:
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MCAST_LEAVE_SOURCE_GROUP;
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toptname = (*cmd == 'j') ?
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"MCAST_JOIN_SOURCE_GROUP":
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"MCAST_LEAVE_SOURCE_GROUP";
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optval = (void *)&mr.gr;
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optlen = sizeof(mr.gr);
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} else {
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mr.mr6.ipv6mr_multiaddr = su.sin6.sin6_addr;
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mr.mr6.ipv6mr_interface = ifindex;
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optname = (*cmd == 'j') ?
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IPV6_JOIN_GROUP :
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IPV6_LEAVE_GROUP;
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toptname = (*cmd == 'j') ?
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"IPV6_JOIN_GROUP" :
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"IPV6_LEAVE_GROUP";
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optval = (void *)&mr.mr6;
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optlen = sizeof(mr.mr6);
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}
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if (s6 < 0) {
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warnc(EPROTONOSUPPORT, "setsockopt %s",
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toptname);
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} else if (setsockopt(s6, level, optname, optval,
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optlen) == 0) {
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printf("ok\n");
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break;
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} else {
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warn("setsockopt %s", toptname);
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}
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}
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#endif /* INET6 */
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/* FALLTHROUGH */
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printf("-1\n");
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break;
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/*
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* Set the socket to include or exclude filter mode, and
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* add some sources to the filterlist, using the full-state API.
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*/
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case 'i':
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case 'e': {
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sockunion_t sources[MAX_ADDRS];
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struct addrinfo hints;
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struct addrinfo *res;
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char *cp;
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|
int af1;
|
|
|
|
n = 0;
|
|
fmode = (*cmd == 'i') ? MCAST_INCLUDE : MCAST_EXCLUDE;
|
|
if ((sscanf(line, "%s %s %d", str1, str2, &n)) != 3) {
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
|
|
ifindex = parse_cmd_args(&su, NULL, str1, str2, NULL);
|
|
if (ifindex == 0 || n < 0 || n > MAX_ADDRS) {
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
af = su.sa.sa_family;
|
|
if (af2sock(af, s, s6) == -1) {
|
|
warnc(EPROTONOSUPPORT, "setsourcefilter");
|
|
break;
|
|
}
|
|
|
|
memset(&hints, 0, sizeof(struct addrinfo));
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
hints.ai_family = af;
|
|
hints.ai_socktype = SOCK_DGRAM;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
sockunion_t *psu = (sockunion_t *)&sources[i];
|
|
/*
|
|
* Trim trailing whitespace, as getaddrinfo()
|
|
* can't cope with it.
|
|
*/
|
|
fgets(str1, sizeof(str1), fp);
|
|
cp = strchr(str1, '\n');
|
|
if (cp != NULL)
|
|
*cp = '\0';
|
|
|
|
res = NULL;
|
|
error = getaddrinfo(str1, "0", &hints, &res);
|
|
if (error)
|
|
break;
|
|
assert(res != NULL);
|
|
|
|
memset(psu, 0, sizeof(sockunion_t));
|
|
af1 = res->ai_family;
|
|
if (af1 == af)
|
|
memcpy(psu, res->ai_addr, res->ai_addrlen);
|
|
freeaddrinfo(res);
|
|
if (af1 != af)
|
|
break;
|
|
}
|
|
if (i < n) {
|
|
if (error)
|
|
warnx("getaddrinfo: %s", gai_strerror(error));
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
if (setsourcefilter(af2sock(af, s, s6), ifindex,
|
|
&su.sa, su.sa.sa_len, fmode, n, &sources[0].ss) != 0)
|
|
warn("setsourcefilter");
|
|
else
|
|
printf("ok\n");
|
|
} break;
|
|
|
|
/*
|
|
* Allow or block traffic from a source, using the
|
|
* delta based api.
|
|
*/
|
|
case 't':
|
|
case 'b': {
|
|
str3[0] = '\0';
|
|
toptname = "";
|
|
sscanf(line, "%s %s %s", str1, str2, str3);
|
|
ifindex = parse_cmd_args(&su, &su2, str1, str2, str3);
|
|
if (ifindex == 0 || su2.sa.sa_family == AF_UNSPEC) {
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
af = su.sa.sa_family;
|
|
if (af2sock(af, s, s6) == -1) {
|
|
warnc(EPROTONOSUPPORT, "getsourcefilter");
|
|
break;
|
|
}
|
|
|
|
/* First determine our current filter mode. */
|
|
if (getsourcefilter(af2sock(af, s, s6), ifindex,
|
|
&su.sa, su.sa.sa_len, &fmode, &n, NULL) != 0) {
|
|
warn("getsourcefilter");
|
|
break;
|
|
}
|
|
#ifdef INET
|
|
if (af == AF_INET) {
|
|
struct in_addr ina;
|
|
|
|
error = __ifindex_to_primary_ip(ifindex, &ina);
|
|
if (error != 0) {
|
|
warn("primary_ip_lookup %s", str2);
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
level = IPPROTO_IP;
|
|
optval = (void *)&mr.mrs;
|
|
optlen = sizeof(mr.mrs);
|
|
mr.mrs.imr_multiaddr = su.sin.sin_addr;
|
|
mr.mrs.imr_sourceaddr = su2.sin.sin_addr;
|
|
mr.mrs.imr_interface = ina;
|
|
if (fmode == MCAST_EXCLUDE) {
|
|
/* Any-source mode socket membership. */
|
|
optname = (*cmd == 't') ?
|
|
IP_UNBLOCK_SOURCE :
|
|
IP_BLOCK_SOURCE;
|
|
toptname = (*cmd == 't') ?
|
|
"IP_UNBLOCK_SOURCE" :
|
|
"IP_BLOCK_SOURCE";
|
|
} else {
|
|
/* Source-specific mode socket membership. */
|
|
optname = (*cmd == 't') ?
|
|
IP_ADD_SOURCE_MEMBERSHIP :
|
|
IP_DROP_SOURCE_MEMBERSHIP;
|
|
toptname = (*cmd == 't') ?
|
|
"IP_ADD_SOURCE_MEMBERSHIP" :
|
|
"IP_DROP_SOURCE_MEMBERSHIP";
|
|
}
|
|
if (setsockopt(s, level, optname, optval,
|
|
optlen) == 0) {
|
|
printf("ok\n");
|
|
break;
|
|
} else {
|
|
warn("setsockopt %s", toptname);
|
|
}
|
|
}
|
|
#ifdef INET6
|
|
else
|
|
#endif /* INET with INET6 */
|
|
#endif /* INET */
|
|
#ifdef INET6
|
|
if (af == AF_INET6) {
|
|
level = IPPROTO_IPV6;
|
|
mr.gr.gsr_interface = ifindex;
|
|
mr.gr.gsr_group = su.ss;
|
|
mr.gr.gsr_source = su2.ss;
|
|
if (fmode == MCAST_EXCLUDE) {
|
|
/* Any-source mode socket membership. */
|
|
optname = (*cmd == 't') ?
|
|
MCAST_UNBLOCK_SOURCE :
|
|
MCAST_BLOCK_SOURCE;
|
|
toptname = (*cmd == 't') ?
|
|
"MCAST_UNBLOCK_SOURCE" :
|
|
"MCAST_BLOCK_SOURCE";
|
|
} else {
|
|
/* Source-specific mode socket membership. */
|
|
optname = (*cmd == 't') ?
|
|
MCAST_JOIN_SOURCE_GROUP :
|
|
MCAST_LEAVE_SOURCE_GROUP;
|
|
toptname = (*cmd == 't') ?
|
|
"MCAST_JOIN_SOURCE_GROUP":
|
|
"MCAST_LEAVE_SOURCE_GROUP";
|
|
}
|
|
optval = (void *)&mr.gr;
|
|
optlen = sizeof(mr.gr);
|
|
if (setsockopt(s6, level, optname, optval,
|
|
optlen) == 0) {
|
|
printf("ok\n");
|
|
break;
|
|
} else {
|
|
warn("setsockopt %s", toptname);
|
|
}
|
|
}
|
|
#endif /* INET6 */
|
|
/* FALLTHROUGH */
|
|
printf("-1\n");
|
|
} break;
|
|
|
|
case 'g': {
|
|
sockunion_t sources[MAX_ADDRS];
|
|
char addrbuf[NI_MAXHOST];
|
|
int nreqsrc, nsrc;
|
|
|
|
if ((sscanf(line, "%s %s %d", str1, str2, &nreqsrc)) != 3) {
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
ifindex = parse_cmd_args(&su, NULL, str1, str2, NULL);
|
|
if (ifindex == 0 || (n < 0 || n > MAX_ADDRS)) {
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
|
|
af = su.sa.sa_family;
|
|
if (af2sock(af, s, s6) == -1) {
|
|
warnc(EPROTONOSUPPORT, "getsourcefilter");
|
|
break;
|
|
}
|
|
nsrc = nreqsrc;
|
|
if (getsourcefilter(af2sock(af, s, s6), ifindex, &su.sa,
|
|
su.sa.sa_len, &fmode, &nsrc, &sources[0].ss) != 0) {
|
|
warn("getsourcefilter");
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
printf("%s\n", (fmode == MCAST_INCLUDE) ? "include" :
|
|
"exclude");
|
|
printf("%d\n", nsrc);
|
|
|
|
nsrc = MIN(nreqsrc, nsrc);
|
|
fprintf(stderr, "hexdump of sources:\n");
|
|
uint8_t *bp = (uint8_t *)&sources[0];
|
|
for (j = 0; j < (nsrc * sizeof(sources[0])); j++) {
|
|
fprintf(stderr, "%02x", bp[j]);
|
|
}
|
|
fprintf(stderr, "\nend hexdump\n");
|
|
|
|
qsort(sources, nsrc, af2socklen(af), su_cmp);
|
|
for (i = 0; i < nsrc; i++) {
|
|
sockunion_t *psu = (sockunion_t *)&sources[i];
|
|
addrbuf[0] = '\0';
|
|
error = getnameinfo(&psu->sa, psu->sa.sa_len,
|
|
addrbuf, sizeof(addrbuf), NULL, 0,
|
|
NI_NUMERICHOST);
|
|
if (error)
|
|
warnx("getnameinfo: %s", gai_strerror(error));
|
|
else
|
|
printf("%s\n", addrbuf);
|
|
}
|
|
printf("ok\n");
|
|
} break;
|
|
|
|
/* link-layer stuff follows. */
|
|
|
|
case 'a':
|
|
case 'd': {
|
|
struct sockaddr_dl *dlp;
|
|
struct ether_addr *ep;
|
|
|
|
memset(&ifr, 0, sizeof(struct ifreq));
|
|
dlp = (struct sockaddr_dl *)&ifr.ifr_addr;
|
|
dlp->sdl_len = sizeof(struct sockaddr_dl);
|
|
dlp->sdl_family = AF_LINK;
|
|
dlp->sdl_index = 0;
|
|
dlp->sdl_nlen = 0;
|
|
dlp->sdl_alen = ETHER_ADDR_LEN;
|
|
dlp->sdl_slen = 0;
|
|
if (sscanf(line, "%s %s", str1, str2) != 2) {
|
|
warnc(EINVAL, "sscanf");
|
|
break;
|
|
}
|
|
ep = ether_aton(str2);
|
|
if (ep == NULL) {
|
|
warnc(EINVAL, "ether_aton");
|
|
break;
|
|
}
|
|
strlcpy(ifr.ifr_name, str1, IF_NAMESIZE);
|
|
memcpy(LLADDR(dlp), ep, ETHER_ADDR_LEN);
|
|
if (ioctl(s, (*cmd == 'a') ? SIOCADDMULTI : SIOCDELMULTI,
|
|
&ifr) == -1) {
|
|
warn("ioctl SIOCADDMULTI/SIOCDELMULTI");
|
|
printf("-1\n");
|
|
} else
|
|
printf("ok\n");
|
|
break;
|
|
}
|
|
|
|
case 'm':
|
|
fprintf(stderr,
|
|
"warning: IFF_ALLMULTI cannot be set from userland "
|
|
"in FreeBSD; command ignored.\n");
|
|
printf("-1\n");
|
|
break;
|
|
|
|
case 'p':
|
|
if (sscanf(line, "%s %u", ifr.ifr_name, &f) != 2) {
|
|
printf("-1\n");
|
|
break;
|
|
}
|
|
if (ioctl(s, SIOCGIFFLAGS, &ifr) == -1) {
|
|
warn("ioctl SIOCGIFFLAGS");
|
|
break;
|
|
}
|
|
flags = (ifr.ifr_flags & 0xffff) | (ifr.ifr_flagshigh << 16);
|
|
if (f == 0) {
|
|
flags &= ~IFF_PPROMISC;
|
|
} else {
|
|
flags |= IFF_PPROMISC;
|
|
}
|
|
ifr.ifr_flags = flags & 0xffff;
|
|
ifr.ifr_flagshigh = flags >> 16;
|
|
if (ioctl(s, SIOCSIFFLAGS, &ifr) == -1)
|
|
warn("ioctl SIOCGIFFLAGS");
|
|
else
|
|
printf( "changed to 0x%08x\n", flags );
|
|
break;
|
|
|
|
case '\n':
|
|
break;
|
|
default:
|
|
printf("invalid command\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
printf("j mcast-addr ifname [src-addr] - join IP multicast group\n");
|
|
printf("l mcast-addr ifname [src-addr] - leave IP multicast group\n");
|
|
printf(
|
|
"i mcast-addr ifname n - set n include mode src filter\n");
|
|
printf(
|
|
"e mcast-addr ifname n - set n exclude mode src filter\n");
|
|
printf("t mcast-addr ifname src-addr - allow traffic from src\n");
|
|
printf("b mcast-addr ifname src-addr - block traffic from src\n");
|
|
printf("g mcast-addr ifname n - get and show n src filters\n");
|
|
printf("a ifname mac-addr - add link multicast filter\n");
|
|
printf("d ifname mac-addr - delete link multicast filter\n");
|
|
printf("m ifname 1/0 - set/clear ether allmulti flag\n");
|
|
printf("p ifname 1/0 - set/clear ether promisc flag\n");
|
|
printf("f filename - read command(s) from file\n");
|
|
printf("s seconds - sleep for some time\n");
|
|
printf("q - quit\n");
|
|
}
|
|
|