예제 #1
0
struct rtnl_addr *
nm_ip4_config_to_rtnl_addr (NMIP4Config *config, guint32 i, guint32 flags)
{
    NMIP4ConfigPrivate *priv = NM_IP4_CONFIG_GET_PRIVATE (config);
    NMIP4Address *config_addr;
    struct rtnl_addr *addr;
    gboolean success = TRUE;

    g_return_val_if_fail (NM_IS_IP4_CONFIG (config), NULL);

    config_addr = nm_ip4_config_get_address (config, i);
    g_return_val_if_fail (config_addr != NULL, NULL);

    if (!(addr = rtnl_addr_alloc()))
        return NULL;

    if (flags & NM_RTNL_ADDR_ADDR)
        success = (ip4_addr_to_rtnl_local (nm_ip4_address_get_address (config_addr), addr) >= 0);

    if (flags & NM_RTNL_ADDR_PTP_ADDR)
        success = (ip4_addr_to_rtnl_peer (priv->ptp_address, addr) >= 0);

    if (flags & NM_RTNL_ADDR_PREFIX)
        rtnl_addr_set_prefixlen (addr, nm_ip4_address_get_prefix (config_addr));

    if (flags & NM_RTNL_ADDR_BROADCAST) {
        guint32 hostmask, network, bcast, netmask;

        netmask = nm_utils_ip4_prefix_to_netmask (nm_ip4_address_get_prefix (config_addr));
        network = ntohl (nm_ip4_address_get_address (config_addr)) & ntohl (netmask);
        hostmask = ~ntohl (netmask);
        bcast = htonl (network | hostmask);

        success = (ip4_addr_to_rtnl_broadcast (bcast, addr) >= 0);
    }

    if (!success) {
        rtnl_addr_put (addr);
        addr = NULL;
    }

    return addr;
}
예제 #2
0
int sysnet_interface_set_addr(VPNInterface *i)
{
    int err;

    struct nl_cache *link_cache;
    struct nl_sock *sock;
    struct rtnl_addr *addr;
    struct rtnl_link *link;
    struct nl_addr *local_addr;

    sock = nl_socket_alloc();
    nl_connect(sock, NETLINK_ROUTE);

    rtnl_link_alloc_cache(sock, AF_UNSPEC, &link_cache);

    addr = rtnl_addr_alloc();
    link = rtnl_link_get_by_name(link_cache, i->name);
    local_addr = nl_addr_build(i->address.ip.family, &i->address.ip.ip4, sizeof(i->address.ip.ip4));

    rtnl_addr_set_local(addr, local_addr);
    rtnl_addr_set_family(addr, i->address.ip.family);
    rtnl_addr_set_prefixlen(addr, i->address.prefix);
    rtnl_addr_set_link(addr, link);

    if ((err = rtnl_addr_add(sock, addr, 0)) < 0) {
        tox_trace(i->context->tox, "Unable to add address %s on %s: %s", ip_ntoa(&i->address.ip), rtnl_link_get_name(link), nl_geterror(err));
    }
    else {
        tox_trace(i->context->tox, "Added address %s on \"%s\"", ip_ntoa(&i->address.ip), i->name);
    }

    rtnl_link_put(link);
    rtnl_addr_put(addr);
    nl_cache_free(link_cache);
    nl_addr_put(local_addr);
    nl_socket_free(sock);

    return err;
}
예제 #3
0
파일: libnl3.c 프로젝트: exuuwen/study
int main(int argc, char *argv[])
{
	struct nl_sock *nl_sock;
	struct nl_cache *link_cache;
	int ifindex;
	int ret = 0;
	int err = 0;

	if (argc < 2)
	{
		printf("%s ip gw on/off tip\n", argv[0]);
		return -1;
	}

//link
	if (err = rtnl_route_read_table_names(ROUTE_TABLE)) {
		printf("failed to read %s. err = %s\n", ROUTE_TABLE, nl_geterror(err));
		return -1;;
	}

	nl_sock = nl_socket_alloc();
	if (NULL == nl_sock) {
		printf("failed to alloc netlink handler.\n");
		return -1;
	}

	if (err = nl_connect(nl_sock, NETLINK_ROUTE)) {
		printf("failed to connect NETLINK_ROUTE. err = %s\n", nl_geterror(err));
		ret = -1;
		goto release_nl;
	}

	if (err = rtnl_link_alloc_cache(nl_sock, AF_INET, &link_cache))
	{
		printf("failed to allocate link cache. err = %s\n", nl_geterror(err));
		ret = -1;
		goto release_nl;
	}

	ifindex = rtnl_link_name2i(link_cache, NAME);
	if (0 == ifindex) {
		printf("%s - failed to find.\n", NAME);
		ret = -1;
		goto release_link_cache;
	}

	struct rtnl_link * link = rtnl_link_get(link_cache, ifindex);
	if (link == NULL)
	{
		printf("can't get link.\n");
		ret = -1;
		goto release_link_cache;
	}
	//rtnl_link_get_by_name

	struct nl_addr *lladdr = rtnl_link_get_addr(link);
	if (NULL == lladdr || AF_LLC != nl_addr_get_family(lladdr)) {
		printf("failed to get MAC\n");
		ret = -1;
		goto release_link;
	}

	uint8_t mac_address[ETHER_ADDR_LEN];
	memcpy(mac_address, nl_addr_get_binary_addr(lladdr), ETHER_ADDR_LEN);
	printf("%02X:%02X:%02X:%02X:%02X:%02X\n",
		 mac_address[0],
		 mac_address[1],
		 mac_address[2],
		 mac_address[3],
		 mac_address[4],
		 mac_address[5]);

//addr 
	struct nl_cache * addr_cache;
	if (err  = rtnl_addr_alloc_cache(nl_sock, &addr_cache))
	{
		printf("fail to get addr_cache\n");
		ret = -1;
		goto release_link;
	}
	struct rtnl_addr *addr = rtnl_addr_alloc();
	rtnl_addr_set_ifindex(addr, ifindex);
	rtnl_addr_set_family(addr, AF_INET);
	int prefixlen = 16;
	nl_cache_foreach_filter(addr_cache, (struct nl_object *)addr, get_ip, &prefixlen);
	nl_cache_free(addr_cache);

	uint32_t ipaddr = inet_addr(argv[1]);
	struct nl_addr * local = nl_addr_build(AF_INET, &ipaddr, sizeof(ipaddr));
	rtnl_addr_set_local(addr, local);
	rtnl_addr_set_ifindex(addr, ifindex);
	rtnl_addr_set_family(addr, AF_INET);
	rtnl_addr_set_prefixlen(addr, 32);

	if (!strcmp(argv[2], "on"))
	{
		if (err = rtnl_addr_add(nl_sock, addr, 0))
		{
			printf("fail to add addr %s\n", nl_geterror(err));
			ret = -1;
			goto release_addr;
		}
	}
	else
	{
		if (err = rtnl_addr_delete(nl_sock, addr, 0))
		{
			printf("fail to del addr %s\n", nl_geterror(err));
			ret = -1;
			goto release_addr;
		}
		
	}
//neigh
	struct nl_cache * neigh_cache;
	if (err = rtnl_neigh_alloc_cache(nl_sock, &neigh_cache))
	{
		printf("failed to allocate neighbor cache. err = %s\n", nl_geterror(err));
		ret = -1;
		goto release_neigh_cache;
	}

	uint32_t gw = inet_addr(argv[3]);
	struct nl_addr * gw_addr = nl_addr_build(AF_INET, &gw, sizeof(gw));

	struct rtnl_neigh * neigh = rtnl_neigh_get(neigh_cache, ifindex, gw_addr);
	if (neigh) {
		// It's optional
		struct nl_addr * lladdr = rtnl_neigh_get_lladdr(neigh);
		if (lladdr) {
			uint8_t mac_address[ETHER_ADDR_LEN];
			memcpy(mac_address, nl_addr_get_binary_addr(lladdr), ETHER_ADDR_LEN);
			printf("gw  %02X:%02X:%02X:%02X:%02X:%02X\n",
		 		mac_address[0],
		 		mac_address[1],
		 		mac_address[2],
		 		mac_address[3],
		 		mac_address[4],
		 		mac_address[5]);
		}
	}

	nl_addr_put(gw_addr);

//route
	struct nl_cache *route_cache;
	if (err = rtnl_route_alloc_cache(nl_sock, AF_INET, 0, &route_cache))
	{
		printf("failed to allocate route cache. err = %s\n", nl_geterror(err));
		ret = -1;
		goto release_neigh_cache;
	}

	struct rtnl_route *route = rtnl_route_alloc();
	struct nl_addr * taddr;
	err = nl_addr_parse(argv[4], AF_INET, &taddr);
        if (err)
        {
                printf("failed to get taddr. err = %s\n", nl_geterror(err));
                ret = -1;
                goto release_route_cache;
                
        }

	nl_cache_foreach_filter(route_cache, OBJ_CAST(route), get_route, NULL);
/*
	struct nl_sock *nl_fib_sock;
	nl_fib_sock = nl_socket_alloc();
	if (err = nl_connect(nl_fib_sock, NETLINK_FIB_LOOKUP)) {
		printf("failed to connect NETLINK_ROUTE. err = %s\n", nl_geterror(err));
		ret = -1;
		goto release_nl;
	}
	struct nl_dump_params params = {
		.dp_fd = stdout,
		.dp_type = NL_DUMP_DETAILS,
	};

	struct nl_cache *route_cache = flnl_result_alloc_cache();

        struct flnl_request *req = flnl_request_alloc();
        struct nl_addr * taddr;
	err = nl_addr_parse(argv[4], AF_INET, &taddr);
	if (err)
	{
		printf("failed to get taddr. err = %s\n", nl_geterror(err));
		ret = -1;
		goto release_route;
		
	}
	int table = RT_TABLE_UNSPEC, scope = RT_SCOPE_UNIVERSE;
        flnl_request_set_addr(req, taddr);
	flnl_request_set_table(req, table);
	flnl_request_set_scope(req, scope);
        err = flnl_lookup(nl_fib_sock, req, route_cache);
	if (err)
	{
		printf("failed to fib lookup. err = %s\n", nl_geterror(err));
		ret = -1;
		goto release_route_addr;
	}
	
	nl_cache_dump(route_cache, &params);

release_route_addr:
	nl_addr_put(taddr);	

release_route:
        nl_cache_free(route_cache);
	nl_object_put(OBJ_CAST(req));

	nl_close(nl_fib_sock);
	nl_socket_free(nl_fib_sock);
*/
release_route_cache:
	nl_cache_free(route_cache);
release_neigh_cache:
	nl_cache_free(neigh_cache);
release_addr:
	nl_addr_put(local);
	rtnl_addr_put(addr);
release_link:
	rtnl_link_put(link);
release_link_cache:
	nl_cache_free(link_cache);
release_nl:
	nl_close(nl_sock);
	nl_socket_free(nl_sock);

	return ret;
}
예제 #4
0
static int _set_ip(nozzle_t nozzle,
		   int command,
		   const char *ipaddr, const char *prefix,
		   int secondary)
{
	int fam;
	char *broadcast = NULL;
	int err = 0;
#ifdef KNET_LINUX
	struct rtnl_addr *addr = NULL;
	struct nl_addr *local_addr = NULL;
	struct nl_addr *bcast_addr = NULL;
	struct nl_cache *cache = NULL;
	int ifindex;
#endif
#ifdef KNET_BSD
	char cmdline[4096];
	char proto[6];
	char *error_string = NULL;
#endif

	if (!strchr(ipaddr, ':')) {
		fam = AF_INET;
		broadcast = generate_v4_broadcast(ipaddr, prefix);
		if (!broadcast) {
			errno = EINVAL;
			return -1;
		}
	} else {
		fam = AF_INET6;
	}

#ifdef KNET_LINUX
	addr = rtnl_addr_alloc();
	if (!addr) {
		errno = ENOMEM;
		return -1;
	}

	if (rtnl_link_alloc_cache(lib_cfg.nlsock, AF_UNSPEC, &cache) < 0) {
		errno = ENOMEM;
		err = -1;
		goto out;
	}

	ifindex = rtnl_link_name2i(cache, nozzle->name);
	if (ifindex == 0) {
		errno = ENOENT;
		err = -1;
		goto out;
	}

	rtnl_addr_set_ifindex(addr, ifindex);

	if (nl_addr_parse(ipaddr, fam, &local_addr) < 0) {
		errno = EINVAL;
		err = -1;
		goto out;
	}

	if (rtnl_addr_set_local(addr, local_addr) < 0) {
		errno = EINVAL;
		err = -1;
		goto out;
	}

	if (broadcast) {
		if (nl_addr_parse(broadcast, fam, &bcast_addr) < 0) {
			errno = EINVAL;
			err = -1;
			goto out;
		}

		if (rtnl_addr_set_broadcast(addr, bcast_addr) < 0) {
			errno = EINVAL;
			err = -1;
			goto out;
		}
	}

	rtnl_addr_set_prefixlen(addr, atoi(prefix));

	if (command == IP_ADD) {
		if (rtnl_addr_add(lib_cfg.nlsock, addr, 0) < 0) {
			errno = EINVAL;
			err = -1;
			goto out;
		}
	} else {
		if (rtnl_addr_delete(lib_cfg.nlsock, addr, 0) < 0) {
			errno = EINVAL;
			err = -1;
			goto out;
		}
	}
out:
	if (addr) {
		rtnl_addr_put(addr);
	}
	if (local_addr) {
		nl_addr_put(local_addr);
	}
	if (bcast_addr) {
		nl_addr_put(bcast_addr);
	}
	if (cache) {
		nl_cache_put(cache);
	}
	if (broadcast) {
		free(broadcast);
	}
	return err;
#endif
#ifdef KNET_BSD
	/*
	 * TODO: port to use ioctl and such, drop shell forking here
	 */
	memset(cmdline, 0, sizeof(cmdline));

	if (fam == AF_INET) {
		snprintf(proto, sizeof(proto), "inet");
	} else {
		snprintf(proto, sizeof(proto), "inet6");
	}

	if (command == IP_ADD) {
		snprintf(cmdline, sizeof(cmdline)-1,
			 "ifconfig %s %s %s/%s",
			 nozzle->name, proto, ipaddr, prefix);
		if (broadcast) {
			snprintf(cmdline + strlen(cmdline),
				 sizeof(cmdline) - strlen(cmdline) -1,
				 " broadcast %s", broadcast);
		}
		if ((secondary) && (fam == AF_INET)) {
			snprintf(cmdline + strlen(cmdline),
				 sizeof(cmdline) - strlen(cmdline) -1,
				 " alias");
		}
	} else {
		snprintf(cmdline, sizeof(cmdline)-1,
				 "ifconfig %s %s %s/%s delete",
				 nozzle->name, proto, ipaddr, prefix);
	}
	if (broadcast) {
		free(broadcast);
	}

	/*
	 * temporary workaround as we port libnozzle to BSD ioctl
	 * for IP address management
	 */
	err = execute_bin_sh_command(cmdline, &error_string);
	if (error_string) {
		free(error_string);
		error_string = NULL;
	}
	return err;
#endif
}