+/*-
+ * Copyright (c) 2007-2009 Bruce Simpson.
+ * Copyright (c) 2000 Wilbert De Graaf.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Diagnostic and test utility for multicast sockets.
+ * TODO: Support embedded KAME Scope ID in IPv6 group addresses.
+ * TODO: Use IPv4 link-local address when source address selection
+ * is implemented; use MCAST_JOIN_SOURCE for IPv4.
+ */
+
+#define INET6
+
+#include <sys/cdefs.h>
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/errno.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/ethernet.h>
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#ifdef INET6
+#include <netinet/in.h>
+#include <netinet/ip6.h>
+#endif
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <err.h>
+#include <unistd.h>
+
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <ifaddrs.h>
+
+#ifdef IP_ADD_SOURCE_MEMBERSHIP
+#define HAS_SSM 1
+#endif
+
+union sockunion {
+ struct sockaddr_storage ss;
+ struct sockaddr sa;
+ struct sockaddr_dl sdl;
+ struct sockaddr_in sin;
+#ifdef INET6
+ struct sockaddr_in6 sin6;
+#endif
+};
+typedef union sockunion sockunion_t;
+
+union mrequnion {
+ struct ip_mreq mr;
+#ifdef HAS_SSM
+ struct ip_mreq_source mrs;
+#endif
+#ifdef INET6
+ struct ipv6_mreq mr6;
+#ifdef HAS_SSM
+ struct group_source_req gr;
+#endif
+#endif
+};
+typedef union mrequnion mrequnion_t;
+
+#define MAX_ADDRS 20
+#define STR_SIZE 64
+#define LINE_LENGTH 80
+
+static int __ifindex_to_primary_ip(const uint32_t, struct in_addr *);
+static uint32_t parse_cmd_args(sockunion_t *, sockunion_t *,
+ const char *, const char *, const char *);
+static void process_file(char *, int, int);
+static void process_cmd(char*, int, int, FILE *);
+static int su_cmp(const void *, const void *);
+static void usage(void);
+
+/*
+ * Ordering predicate for qsort().
+ */
+static int
+su_cmp(const void *a, const void *b)
+{
+ const sockunion_t *sua = (const sockunion_t *)a;
+ const sockunion_t *sub = (const sockunion_t *)b;
+
+ assert(sua->sa.sa_family == sub->sa.sa_family);
+
+ switch (sua->sa.sa_family) {
+ case AF_INET:
+ return ((int)(sua->sin.sin_addr.s_addr -
+ sub->sin.sin_addr.s_addr));
+ break;
+#ifdef INET6
+ case AF_INET6:
+ return (memcmp(&sua->sin6.sin6_addr, &sub->sin6.sin6_addr,
+ sizeof(struct in6_addr)));
+ break;
+#endif
+ default:
+ break;
+ }
+
+ assert(sua->sa.sa_len == sub->sa.sa_len);
+ return (memcmp(sua, sub, sua->sa.sa_len));
+}
+
+/*
+ * Internal: Map an interface index to primary IPv4 address.
+ * This is somewhat inefficient. This is a useful enough operation
+ * that it probably belongs in the C library.
+ * Return zero if found, -1 on error, 1 on not found.
+ */
+static int
+__ifindex_to_primary_ip(const uint32_t ifindex, struct in_addr *pina)
+{
+ char ifname[IFNAMSIZ];
+ struct ifaddrs *ifa;
+ struct ifaddrs *ifaddrs;
+ sockunion_t *psu;
+ int retval;
+
+ assert(ifindex != 0);
+
+ retval = -1;
+ if (if_indextoname(ifindex, ifname) == NULL)
+ return (retval);
+ if (getifaddrs(&ifaddrs) < 0)
+ return (retval);
+
+ /*
+ * Find the ifaddr entry corresponding to the interface name,
+ * and return the first matching IPv4 address.
+ */
+ retval = 1;
+ for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
+ if (strcmp(ifa->ifa_name, ifname) != 0)
+ continue;
+ psu = (sockunion_t *)ifa->ifa_addr;
+ if (psu && psu->sa.sa_family == AF_INET) {
+ retval = 0;
+ memcpy(pina, &psu->sin.sin_addr,
+ sizeof(struct in_addr));
+ break;
+ }
+ }
+
+ if (retval != 0)
+ errno = EADDRNOTAVAIL; /* XXX */
+
+ freeifaddrs(ifaddrs);
+ return (retval);
+}
+
+int
+main(int argc, char **argv)
+{
+ char line[LINE_LENGTH];
+ char *p;
+ int i, s, s6;
+
+ s = -1;
+ s6 = -1;
+ s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ if (s == -1)
+ err(1, "can't open IPv4 socket");
+#ifdef INET6
+ s6 = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
+ if (s6 == -1)
+ err(1, "can't open IPv6 socket");
+#endif
+
+ if (argc < 2) {
+ if (isatty(STDIN_FILENO)) {
+ printf("multicast membership test program; "
+ "enter ? for list of commands\n");
+ }
+ do {
+ if (fgets(line, sizeof(line), stdin) != NULL) {
+ if (line[0] != 'f')
+ process_cmd(line, s, s6, stdin);
+ else {
+ /* Get the filename */
+ for (i = 1; isblank(line[i]); i++);
+ if ((p = (char*)strchr(line, '\n'))
+ != NULL)
+ *p = '\0';
+ process_file(&line[i], s, s6);
+ }
+ }
+ } while (!feof(stdin));
+ } else {
+ for (i = 1; i < argc; i++) {
+ process_file(argv[i], s, s6);
+ }
+ }
+
+ if (s != -1)
+ close(s);
+ if (s6 != -1)
+ close(s6);
+
+ exit (0);
+}
+
+static void
+process_file(char *fname, int s, int s6)
+{
+ char line[80];
+ FILE *fp;
+ char *lineptr;
+
+ fp = fopen(fname, "r");
+ if (fp == NULL) {
+ warn("fopen");
+ return;
+ }
+
+ /* Skip comments and empty lines. */
+ while (fgets(line, sizeof(line), fp) != NULL) {
+ lineptr = line;
+ while (isblank(*lineptr))
+ lineptr++;
+ if (*lineptr != '#' && *lineptr != '\n')
+ process_cmd(lineptr, s, s6, fp);
+ }
+
+ fclose(fp);
+}
+
+/*
+ * Parse join/leave/allow/block arguments, given:
+ * str1: group (as AF_INET or AF_INET6 printable)
+ * str2: ifname
+ * str3: optional source address (may be NULL).
+ * This argument must have the same parsed address family as str1.
+ * Return the ifindex of ifname, or 0 if any parse element failed.
+ */
+static uint32_t
+parse_cmd_args(sockunion_t *psu, sockunion_t *psu2,
+ const char *str1, const char *str2, const char *str3)
+{
+ struct addrinfo hints;
+ struct addrinfo *res;
+ uint32_t ifindex;
+ int af, error;
+
+ assert(psu != NULL);
+ assert(str1 != NULL);
+ assert(str2 != NULL);
+
+ af = AF_UNSPEC;
+
+ ifindex = if_nametoindex(str2);
+ if (ifindex == 0)
+ return (0);
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_flags = AI_NUMERICHOST;
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+
+ memset(psu, 0, sizeof(sockunion_t));
+ psu->sa.sa_family = AF_UNSPEC;
+
+ error = getaddrinfo(str1, "0", &hints, &res);
+ if (error) {
+ warnx("getaddrinfo: %s", gai_strerror(error));
+ return (0);
+ }
+ assert(res != NULL);
+ af = res->ai_family;
+ memcpy(psu, res->ai_addr, res->ai_addrlen);
+ freeaddrinfo(res);
+
+ /* sscanf() may pass the empty string. */
+ if (psu2 != NULL && str3 != NULL && *str3 != '\0') {
+ memset(psu2, 0, sizeof(sockunion_t));
+ psu2->sa.sa_family = AF_UNSPEC;
+
+ /* look for following address family; str3 is *optional*. */
+ hints.ai_family = af;
+ error = getaddrinfo(str3, "0", &hints, &res);
+ if (error) {
+ warnx("getaddrinfo: %s", gai_strerror(error));
+ ifindex = 0;
+ } else {
+ if (af != res->ai_family) {
+ errno = EINVAL; /* XXX */
+ ifindex = 0;
+ }
+ memcpy(psu2, res->ai_addr, res->ai_addrlen);
+ freeaddrinfo(res);
+ }
+ }
+
+ return (ifindex);
+}
+
+static __inline int
+af2sock(const int af, int s, int s6)
+{
+
+ if (af == AF_INET)
+ return (s);
+#ifdef INET6
+ if (af == AF_INET6)
+ return (s6);
+#endif
+ return (-1);
+}
+
+static __inline int
+af2socklen(const int af)
+{
+
+ if (af == AF_INET)
+ return (sizeof(struct sockaddr_in));
+#ifdef INET6
+ if (af == AF_INET6)
+ return (sizeof(struct sockaddr_in6));
+#endif
+ return (-1);
+}
+
+static void
+process_cmd(char *cmd, int s, int s6 __unused, FILE *fp __unused)
+{
+ char str1[STR_SIZE];
+ char str2[STR_SIZE];
+ char str3[STR_SIZE];
+ mrequnion_t mr;
+ sockunion_t su, su2;
+ struct ifreq ifr;
+ char *line;
+ char *toptname;
+ void *optval;
+ uint32_t fmode, ifindex;
+ socklen_t optlen;
+ int af, error, i, level, n, optname;
+#ifndef __APPLE__
+ int f, flags;
+#endif /* __APPLE__ */
+
+ af = AF_UNSPEC;
+ su.sa.sa_family = AF_UNSPEC;
+ su2.sa.sa_family = AF_UNSPEC;
+
+ line = cmd;
+ while (isblank(*++line))
+ ; /* Skip whitespace. */
+
+ switch (*cmd) {
+ case '?':
+ usage();
+ break;
+
+ case 'q':
+ close(s);
+ exit(0);
+
+ case 's':
+ if ((sscanf(line, "%d", &n) != 1) || (n < 1)) {
+ printf("-1\n");
+ break;
+ }
+ sleep(n);
+ printf("ok\n");
+ break;
+
+ case 'j':
+ case 'l':
+ str3[0] = '\0';
+ toptname = "";
+ sscanf(line, "%s %s %s", str1, str2, str3);
+ ifindex = parse_cmd_args(&su, &su2, str1, str2, str3);
+ if (ifindex == 0) {
+ printf("-1\n");
+ break;
+ }
+ af = su.sa.sa_family;
+ 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;
+
+#ifdef HAS_SSM
+ if (su2.sa.sa_family != AF_UNSPEC) {
+ mr.mrs.imr_multiaddr = su.sin.sin_addr;
+ mr.mrs.imr_sourceaddr = su2.sin.sin_addr;
+ mr.mrs.imr_interface = ina;
+ optname = (*cmd == 'j') ?
+ IP_ADD_SOURCE_MEMBERSHIP :
+ IP_DROP_SOURCE_MEMBERSHIP;
+ toptname = (*cmd == 'j') ?
+ "IP_ADD_SOURCE_MEMBERSHIP" :
+ "IP_DROP_SOURCE_MEMBERSHIP";
+ optval = (void *)&mr.mrs;
+ optlen = sizeof(mr.mrs);
+ } else {
+#endif
+ mr.mr.imr_multiaddr = su.sin.sin_addr;
+ mr.mr.imr_interface = ina;
+ optname = (*cmd == 'j') ?
+ IP_ADD_MEMBERSHIP : IP_DROP_MEMBERSHIP;
+ toptname = (*cmd == 'j') ?
+ "IP_ADD_MEMBERSHIP" : "IP_DROP_MEMBERSHIP";
+ optval = (void *)&mr.mr;
+ optlen = sizeof(mr.mr);
+#ifdef HAS_SSM
+ }
+#endif
+ if (setsockopt(s, level, optname, optval,
+ optlen) == 0) {
+ printf("ok\n");
+ break;
+ } else {
+ warn("setsockopt %s", toptname);
+ }
+ }
+#ifdef INET6
+ else
+#endif /* INET6 */
+#ifdef INET6
+ if (af == AF_INET6) {
+ level = IPPROTO_IPV6;
+#ifdef HAS_SSM
+ if (su2.sa.sa_family != AF_UNSPEC) {
+ mr.gr.gsr_interface = ifindex;
+ mr.gr.gsr_group = su.ss;
+ mr.gr.gsr_source = su2.ss;
+ optname = (*cmd == 'j') ?
+ MCAST_JOIN_SOURCE_GROUP:
+ MCAST_LEAVE_SOURCE_GROUP;
+ toptname = (*cmd == 'j') ?
+ "MCAST_JOIN_SOURCE_GROUP":
+ "MCAST_LEAVE_SOURCE_GROUP";
+ optval = (void *)&mr.gr;
+ optlen = sizeof(mr.gr);
+ } else {
+#endif
+ mr.mr6.ipv6mr_multiaddr = su.sin6.sin6_addr;
+ mr.mr6.ipv6mr_interface = ifindex;
+ optname = (*cmd == 'j') ?
+ IPV6_JOIN_GROUP :
+ IPV6_LEAVE_GROUP;
+ toptname = (*cmd == 'j') ?
+ "IPV6_JOIN_GROUP" :
+ "IPV6_LEAVE_GROUP";
+ optval = (void *)&mr.mr6;
+ optlen = sizeof(mr.mr6);
+#ifdef HAS_SSM
+ }
+#endif
+ if (setsockopt(s6, level, optname, optval,
+ optlen) == 0) {
+ printf("ok\n");
+ break;
+ } else {
+ warn("setsockopt %s", toptname);
+ }
+ }
+#endif /* INET6 */
+ /* FALLTHROUGH */
+ printf("-1\n");
+ break;
+
+#ifdef HAS_SSM
+ /*
+ * Set the socket to include or exclude filter mode, and
+ * add some sources to the filterlist, using the full-state API.
+ */
+ case 'i':
+ case 'e': {
+ sockunion_t sources[MAX_ADDRS];
+ struct addrinfo hints;
+ struct addrinfo *res;
+ char *cp;
+ 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;
+
+ 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;
+
+ /* First determine our current filter mode. */
+ n = 0;
+ if (getsourcefilter(af2sock(af, s, s6), ifindex,
+ &su.sa, su.sa.sa_len, &fmode, (uint32_t *)&n, NULL) != 0) {
+ warn("getsourcefilter");
+ break;
+ }
+ 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 /* INET6 */
+#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;
+ nsrc = nreqsrc;
+ if (getsourcefilter(af2sock(af, s, s6), ifindex, &su.sa,
+ su.sa.sa_len, &fmode, (uint32_t *)&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 (i = 0; i < (nsrc * sizeof(sources[0])); i++) {
+ fprintf(stderr, "%02x", bp[i]);
+ }
+ fprintf(stderr, "\nend hexdump\n");
+
+ qsort(sources, nsrc, sizeof (sockunion_t), 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;
+#endif
+ /* 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 Darwin; command ignored.\n");
+ printf("-1\n");
+ break;
+
+#ifndef __APPLE__
+ 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;
+#endif /* __APPLE__ */
+ case '\n':
+ break;
+ default:
+ printf("invalid command\n");
+ break;
+ }
+}
+
+static void
+usage(void)
+{
+
+#ifndef HAS_SSM
+ printf("j mcast-addr ifname - join IP multicast group\n");
+ printf("l mcast-addr ifname - leave IP multicast group\n");
+#else /* HAS_SSM */
+ 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");
+#endif
+ 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");
+#ifndef __APPLE__
+ printf("p ifname 1/0 - set/clear ether promisc flag\n");
+#endif /* __APPLE__ */
+ printf("f filename - read command(s) from file\n");
+ printf("s seconds - sleep for some time\n");
+ printf("q - quit\n");
+}
+
projects / apple / network_cmds.git / commitdiff
