Example #1
0
NMIP6Config *
nm_ip6_config_new_for_interface (int ifindex)
{
	NMIP6Config *ip6;
	GArray *addrs_array, *routes_array;
	NMPlatformIP6Address *addrs;
	NMPlatformIP6Route *routes;
	NMIP6Address *addr;
	NMIP6Route *route;
	int i;

	addrs_array = nm_platform_ip6_address_get_all (ifindex);
	if (addrs_array->len == 0) {
		g_array_unref (addrs_array);
		return NULL;
	}

	ip6 = nm_ip6_config_new ();

	addrs = (NMPlatformIP6Address *)addrs_array->data;
	for (i = 0; i < addrs_array->len; i++) {
		addr = nm_ip6_address_new ();
		nm_ip6_address_set_address (addr, &addrs[i].address);
		nm_ip6_address_set_prefix (addr, addrs[i].plen);
		nm_ip6_config_take_address (ip6, addr);
	}
	g_array_unref (addrs_array);

	routes_array = nm_platform_ip6_route_get_all (ifindex);
	routes = (NMPlatformIP6Route *)routes_array->data;
	for (i = 0; i < routes_array->len; i++) {
		/* Default route ignored; it's handled internally by NM and not
		* tracked in the device's IP config.
		*/
		if (routes[i].plen == 0)
			continue;

		route = nm_ip6_route_new ();
		nm_ip6_route_set_dest (route, &routes[i].network);
		nm_ip6_route_set_prefix (route, routes[i].plen);
		nm_ip6_route_set_next_hop (route, &routes[i].gateway);
		nm_ip6_route_set_metric (route, routes[i].metric);
		nm_ip6_config_take_route (ip6, route);
	}
	g_array_unref (routes_array);

	return ip6;
}
Example #2
0
NMIP6Config *
nm_ip6_manager_get_ip6_config (NMIP6Manager *manager, int ifindex)
{
	NMIP6ManagerPrivate *priv;
	NMIP6Device *device;
	NMIP6Config *config;
	struct rtnl_addr *rtnladdr;
	struct nl_addr *nladdr;
	struct in6_addr *addr;
	NMIP6Address *ip6addr;
	struct rtnl_route *rtnlroute;
	struct nl_addr *nldest, *nlgateway;
	struct in6_addr *dest, *gateway;
	gboolean defgw_set = FALSE;
	struct in6_addr defgw;
	uint32_t metric;
	NMIP6Route *ip6route;
	int i;

	g_return_val_if_fail (NM_IS_IP6_MANAGER (manager), NULL);
	g_return_val_if_fail (ifindex > 0, NULL);

	priv = NM_IP6_MANAGER_GET_PRIVATE (manager);

	device = (NMIP6Device *) g_hash_table_lookup (priv->devices,
	                                              GINT_TO_POINTER (ifindex));
	if (!device) {
		nm_log_warn (LOGD_IP6, "(%d): addrconf not started.", ifindex);
		return NULL;
	}

	config = nm_ip6_config_new ();
	if (!config) {
		nm_log_err (LOGD_IP6, "(%s): out of memory creating IP6 config object.",
		            device->iface);
		return NULL;
	}

	/* Make sure we refill the route and address caches, otherwise we won't get
	 * up-to-date information here since the netlink route/addr change messages
	 * may be lagging a bit.
	 */
	nl_cache_refill (priv->nlh, priv->route_cache);
	nl_cache_refill (priv->nlh, priv->addr_cache);

	/* Add routes */
	for (rtnlroute = FIRST_ROUTE (priv->route_cache); rtnlroute; rtnlroute = NEXT_ROUTE (rtnlroute)) {
		/* Make sure it's an IPv6 route for this device */
		if (rtnl_route_get_oif (rtnlroute) != device->ifindex)
			continue;
		if (rtnl_route_get_family (rtnlroute) != AF_INET6)
			continue;

		nldest = rtnl_route_get_dst (rtnlroute);
		if (!nldest || nl_addr_get_family (nldest) != AF_INET6)
			continue;
		dest = nl_addr_get_binary_addr (nldest);

		nlgateway = rtnl_route_get_gateway (rtnlroute);
		if (!nlgateway || nl_addr_get_family (nlgateway) != AF_INET6)
			continue;
		gateway = nl_addr_get_binary_addr (nlgateway);

		if (rtnl_route_get_dst_len (rtnlroute) == 0) {
			/* Default gateway route; don't add to normal routes but to each address */
			if (!defgw_set) {
				memcpy (&defgw, gateway, sizeof (defgw));
				defgw_set = TRUE;
			}
			continue;
		}

		/* Also ignore link-local routes where the destination and gateway are
		 * the same, which apparently get added by the kernel but return -EINVAL
		 * when we try to add them via netlink.
		 */
		if (gateway && IN6_ARE_ADDR_EQUAL (dest, gateway))
			continue;

		ip6route = nm_ip6_route_new ();
		nm_ip6_route_set_dest (ip6route, dest);
		nm_ip6_route_set_prefix (ip6route, rtnl_route_get_dst_len (rtnlroute));
		nm_ip6_route_set_next_hop (ip6route, gateway);
		rtnl_route_get_metric(rtnlroute, 1, &metric);
		if (metric != UINT_MAX)
			nm_ip6_route_set_metric (ip6route, metric);
		nm_ip6_config_take_route (config, ip6route);
	}

	/* Add addresses */
	for (rtnladdr = FIRST_ADDR (priv->addr_cache); rtnladdr; rtnladdr = NEXT_ADDR (rtnladdr)) {
		if (rtnl_addr_get_ifindex (rtnladdr) != device->ifindex)
			continue;

		nladdr = rtnl_addr_get_local (rtnladdr);
		if (!nladdr || nl_addr_get_family (nladdr) != AF_INET6)
			continue;

		addr = nl_addr_get_binary_addr (nladdr);
		ip6addr = nm_ip6_address_new ();
		nm_ip6_address_set_prefix (ip6addr, rtnl_addr_get_prefixlen (rtnladdr));
		nm_ip6_address_set_address (ip6addr, addr);
		nm_ip6_config_take_address (config, ip6addr);
		if (defgw_set)
			nm_ip6_address_set_gateway (ip6addr, &defgw);
	}

	/* Add DNS servers */
	if (device->rdnss_servers) {
		NMIP6RDNSS *rdnss = (NMIP6RDNSS *)(device->rdnss_servers->data);

		for (i = 0; i < device->rdnss_servers->len; i++)
			nm_ip6_config_add_nameserver (config, &rdnss[i].addr);
	}

	/* Add DNS domains */
	if (device->dnssl_domains) {
		NMIP6DNSSL *dnssl = (NMIP6DNSSL *)(device->dnssl_domains->data);

		for (i = 0; i < device->dnssl_domains->len; i++)
			nm_ip6_config_add_domain (config, dnssl[i].domain);
	}

	return config;
}
/* Given a table of DHCP options from the client, convert into an IP6Config */
static NMIP6Config *
ip6_options_to_config (NMDHCPClient *self)
{
	NMDHCPClientPrivate *priv;
	NMIP6Config *ip6_config = NULL;
	struct in6_addr tmp_addr;
	NMIP6Address *addr = NULL;
	char *str = NULL;
	GHashTableIter iter;
	gpointer key, value;

	g_return_val_if_fail (self != NULL, NULL);
	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);

	priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
	g_return_val_if_fail (priv->options != NULL, NULL);

	g_hash_table_iter_init (&iter, priv->options);
	while (g_hash_table_iter_next (&iter, &key, &value)) {
		nm_log_dbg (LOGD_DHCP6, "(%s): option '%s'=>'%s'",
		            priv->iface, (const char *) key, (const char *) value);
	}

	ip6_config = nm_ip6_config_new ();
	if (!ip6_config) {
		nm_log_warn (LOGD_DHCP6, "(%s): couldn't allocate memory for an IP6Config!", priv->iface);
		return NULL;
	}

	str = g_hash_table_lookup (priv->options, "new_ip6_address");
	if (str) {
		if (!inet_pton (AF_INET6, str, &tmp_addr)) {
			nm_log_warn (LOGD_DHCP6, "(%s): DHCP returned invalid address '%s'",
			             priv->iface, str);
			goto error;
		}

		addr = nm_ip6_address_new ();
		g_assert (addr);
		nm_ip6_address_set_address (addr, &tmp_addr);
		/* DHCPv6 IA_NA assignments are single address only */
		nm_ip6_address_set_prefix (addr, 128);
		nm_log_info (LOGD_DHCP6, "  address %s/128", str);

		nm_ip6_config_take_address (ip6_config, addr);
	} else if (priv->info_only == FALSE) {
		/* No address in Managed mode is a hard error */
		goto error;
	}

	str = g_hash_table_lookup (priv->options, "new_host_name");
	if (str)
		nm_log_info (LOGD_DHCP6, "  hostname '%s'", str);

	str = g_hash_table_lookup (priv->options, "new_dhcp6_name_servers");
	if (str) {
		char **searches = g_strsplit (str, " ", 0);
		char **s;

		for (s = searches; *s; s++) {
			if (inet_pton (AF_INET6, *s, &tmp_addr) > 0) {
				nm_ip6_config_add_nameserver (ip6_config, &tmp_addr);
				nm_log_info (LOGD_DHCP6, "  nameserver '%s'", *s);
			} else
				nm_log_warn (LOGD_DHCP6, "ignoring invalid nameserver '%s'", *s);
		}
		g_strfreev (searches);
	}

	str = g_hash_table_lookup (priv->options, "new_dhcp6_domain_search");
	if (str)
		process_domain_search (str, ip6_add_domain_search, ip6_config);

	return ip6_config;

error:
	g_object_unref (ip6_config);
	return NULL;
}
/* Given a table of DHCP options from the client, convert into an IP6Config */
static NMIP6Config *
ip6_options_to_config (NMDHCPClient *self)
{
	NMDHCPClientPrivate *priv;
	NMIP6Config *ip6_config = NULL;
	struct in6_addr tmp_addr;
	NMIP6Address *addr = NULL;
	char *str = NULL;
	GHashTableIter iter;
	gpointer key, value;

	g_return_val_if_fail (self != NULL, NULL);
	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);

	priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
	g_return_val_if_fail (priv->options != NULL, NULL);

	g_hash_table_iter_init (&iter, priv->options);
	while (g_hash_table_iter_next (&iter, &key, &value)) {
		nm_log_dbg (LOGD_DHCP6, "(%s): option '%s'=>'%s'",
		            priv->iface, (const char *) key, (const char *) value);
	}

	ip6_config = nm_ip6_config_new ();
	if (!ip6_config) {
		nm_log_warn (LOGD_DHCP6, "(%s): couldn't allocate memory for an IP6Config!", priv->iface);
		return NULL;
	}

	addr = nm_ip6_address_new ();
	if (!addr) {
		nm_log_warn (LOGD_DHCP6, "(%s): couldn't allocate memory for an IP6 Address!", priv->iface);
		goto error;
	}

	str = g_hash_table_lookup (priv->options, "new_ip6_address");
	if (str) {
		if (!inet_pton (AF_INET6, str, &tmp_addr)) {
			nm_log_warn (LOGD_DHCP6, "(%s): DHCP returned invalid address '%s'",
			             priv->iface);
			goto error;
		}

		nm_ip6_address_set_address (addr, &tmp_addr);
		nm_log_info (LOGD_DHCP6, "  address %s", str);
	} else {
		/* No address in managed mode is a hard error */
		if (priv->info_only == FALSE)
			goto error;

		/* But "info-only" setups don't necessarily need an address */
		nm_ip6_address_unref (addr);
		addr = NULL;
	}

	/* Only care about prefix if we got an address */
	if (addr) {
		str = g_hash_table_lookup (priv->options, "new_ip6_prefixlen");
		if (str) {
			long unsigned int prefix;

			errno = 0;
			prefix = strtoul (str, NULL, 10);
			if (errno != 0 || prefix > 128)
				goto error;

			nm_ip6_address_set_prefix (addr, (guint32) prefix);
			nm_log_info (LOGD_DHCP6, "  prefix %lu", prefix);
		}

		nm_ip6_config_take_address (ip6_config, addr);
		addr = NULL;
	}

	str = g_hash_table_lookup (priv->options, "new_host_name");
	if (str)
		nm_log_info (LOGD_DHCP6, "  hostname '%s'", str);

	str = g_hash_table_lookup (priv->options, "new_dhcp6_name_servers");
	if (str) {
		char **searches = g_strsplit (str, " ", 0);
		char **s;

		for (s = searches; *s; s++) {
			if (inet_pton (AF_INET6, *s, &tmp_addr) > 0) {
				nm_ip6_config_add_nameserver (ip6_config, &tmp_addr);
				nm_log_info (LOGD_DHCP6, "  nameserver '%s'", *s);
			} else
				nm_log_warn (LOGD_DHCP6, "ignoring invalid nameserver '%s'", *s);
		}
		g_strfreev (searches);
	}

	str = g_hash_table_lookup (priv->options, "new_dhcp6_domain_search");
	if (str)
		process_domain_search (str, ip6_add_domain_search, ip6_config);

	return ip6_config;

error:
	if (addr)
		nm_ip6_address_unref (addr);
	g_object_unref (ip6_config);
	return NULL;
}