示例#1
0
文件: ndp.c 项目: huihong/freebsd
/*
 * Set an individual neighbor cache entry
 */
static int
set(int argc, char **argv)
{
	register struct sockaddr_in6 *sin = &sin_m;
	register struct sockaddr_dl *sdl;
	register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
	struct addrinfo hints, *res;
	int gai_error;
	u_char *ea;
	char *host = argv[0], *eaddr = argv[1];

	getsocket();
	argc -= 2;
	argv += 2;
	sdl_m = blank_sdl;
	sin_m = blank_sin;

	bzero(&hints, sizeof(hints));
	hints.ai_family = AF_INET6;
	gai_error = getaddrinfo(host, NULL, &hints, &res);
	if (gai_error) {
		fprintf(stderr, "ndp: %s: %s\n", host,
			gai_strerror(gai_error));
		return 1;
	}
	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
	sin->sin6_scope_id =
	    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
	ea = (u_char *)LLADDR(&sdl_m);
	if (ndp_ether_aton(eaddr, ea) == 0)
		sdl_m.sdl_alen = 6;
	flags = expire_time = 0;
	while (argc-- > 0) {
		if (strncmp(argv[0], "temp", 4) == 0) {
			struct timeval now;

			gettimeofday(&now, 0);
			expire_time = now.tv_sec + 20 * 60;
		} else if (strncmp(argv[0], "proxy", 5) == 0)
			flags |= RTF_ANNOUNCE;
		argv++;
	}
	if (rtmsg(RTM_GET) < 0) {
		errx(1, "RTM_GET(%s) failed", host);
		/* NOTREACHED */
	}
	sin = (struct sockaddr_in6 *)(rtm + 1);
	sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin);
	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
		if (sdl->sdl_family == AF_LINK &&
		    !(rtm->rtm_flags & RTF_GATEWAY)) {
			switch (sdl->sdl_type) {
			case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
			case IFT_ISO88024: case IFT_ISO88025:
			case IFT_L2VLAN: case IFT_BRIDGE:
				goto overwrite;
			}
		}
		fprintf(stderr, "set: cannot configure a new entry\n");
		return 1;
	}

overwrite:
	if (sdl->sdl_family != AF_LINK) {
		printf("cannot intuit interface index and type for %s\n", host);
		return (1);
	}
	sdl_m.sdl_type = sdl->sdl_type;
	sdl_m.sdl_index = sdl->sdl_index;
	return (rtmsg(RTM_ADD));
}
示例#2
0
/*
 * Set an individual neighbor cache entry
 */
int
set(int argc, char **argv)
{
	struct sockaddr_in6 *sin = &sin_m;
	struct sockaddr_dl *sdl;
	struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
	struct addrinfo hints, *res;
	int gai_error;
	u_char *ea;
	char *host = argv[0], *eaddr = argv[1];

	getsocket();
	argc -= 2;
	argv += 2;
	sdl_m = blank_sdl;
	sin_m = blank_sin;

	bzero(&hints, sizeof(hints));
	hints.ai_family = AF_INET6;
	gai_error = getaddrinfo(host, NULL, &hints, &res);
	if (gai_error) {
		fprintf(stderr, "ndp: %s: %s\n", host,
			gai_strerror(gai_error));
		return 1;
	}
	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
#ifdef __KAME__
	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
			htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
	}
#endif
	ea = (u_char *)LLADDR(&sdl_m);
	if (ndp_ether_aton(eaddr, ea) == 0)
		sdl_m.sdl_alen = 6;
	flags = 0;
	expire_time = 0;
	while (argc-- > 0) {
		if (strncmp(argv[0], "temp", 4) == 0) {
			struct timespec sp;

			clock_gettime(CLOCK_MONOTONIC, &sp);
			expire_time = sp.tv_sec + 20 * 60;
		} else if (strncmp(argv[0], "proxy", 5) == 0)
			flags |= RTF_ANNOUNCE;
		argv++;
	}
	if (rtmsg(RTM_GET) < 0) {
		perror(host);
		return (1);
	}
	sin = (struct sockaddr_in6 *)(rtm + 1);
	sdl = (struct sockaddr_dl *)(RT_ROUNDUP(sin->sin6_len) + (char *)sin);
	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
		if (sdl->sdl_family == AF_LINK &&
		    (rtm->rtm_flags & RTF_LLINFO) &&
		    !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) {
		case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
		case IFT_ISO88024: case IFT_ISO88025:
			goto overwrite;
		}
		/*
		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
		 */
		fprintf(stderr, "set: cannot configure a new entry\n");
		return 1;
	}

overwrite:
	if (sdl->sdl_family != AF_LINK) {
		printf("cannot intuit interface index and type for %s\n", host);
		return (1);
	}
	sdl_m.sdl_type = sdl->sdl_type;
	sdl_m.sdl_index = sdl->sdl_index;
	return (rtmsg(RTM_ADD));
}
示例#3
0
/*
 * Set an individual neighbor cache entry
 */
static int
set(int argc, char **argv)
{
	register struct sockaddr_in6 *mysin = &sin_m;
	register struct sockaddr_dl *sdl;
	register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
	struct addrinfo hints, *res;
	int gai_error;
	u_char *ea;
	char *host = argv[0], *eaddr = argv[1];

	getsocket();
	argc -= 2;
	argv += 2;
	sdl_m = blank_sdl;
	sin_m = blank_sin;

	(void)memset(&hints, 0, sizeof(hints));
	hints.ai_family = AF_INET6;
	gai_error = getaddrinfo(host, NULL, &hints, &res);
	if (gai_error) {
		warnx("%s: %s\n", host, gai_strerror(gai_error));
		return 1;
	}
	mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr;
	inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL);
	ea = (u_char *)LLADDR(&sdl_m);
	if (ndp_ether_aton(eaddr, ea) == 0)
		sdl_m.sdl_alen = 6;
	flags = expire_time = 0;
	while (argc-- > 0) {
		if (strncmp(argv[0], "temp", 4) == 0) {
			struct timeval tim;

			(void)gettimeofday(&tim, 0);
			expire_time = tim.tv_sec + 20 * 60;
		} else if (strncmp(argv[0], "proxy", 5) == 0)
			flags |= RTF_ANNOUNCE;
		argv++;
	}
	if (rtmsg(RTM_GET) < 0) {
		errx(1, "RTM_GET(%s) failed", host);
		/* NOTREACHED */
	}
	mysin = (struct sockaddr_in6 *)(void *)(rtm + 1);
	sdl = (struct sockaddr_dl *)(void *)(RT_ROUNDUP(mysin->sin6_len) + (char *)(void *)mysin);
	if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) {
		if (sdl->sdl_family == AF_LINK &&
		    (rtm->rtm_flags & RTF_LLINFO) &&
		    !(rtm->rtm_flags & RTF_GATEWAY)) {
			switch (sdl->sdl_type) {
			case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
			case IFT_ISO88024: case IFT_ISO88025:
				goto overwrite;
			}
		}
		/*
		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
		 */
		(void)fprintf(stderr, "set: cannot configure a new entry\n");
		return 1;
	}

overwrite:
	if (sdl->sdl_family != AF_LINK) {
		warnx("cannot intuit interface index and type for %s", host);
		return (1);
	}
	sdl_m.sdl_type = sdl->sdl_type;
	sdl_m.sdl_index = sdl->sdl_index;
	return (rtmsg(RTM_ADD));
}