+struct gateway_data {
+ int index;
+ char *gateway;
+};
+
+static GSList *gateway_list = NULL;
+
+static struct gateway_data *find_gateway(int index, const char *gateway)
+{
+ GSList *list;
+
+ if (gateway == NULL)
+ return NULL;
+
+ for (list = gateway_list; list; list = list->next) {
+ struct gateway_data *data = list->data;
+
+ if (data->gateway == NULL)
+ continue;
+
+ if (data->index == index &&
+ g_str_equal(data->gateway, gateway) == TRUE)
+ return data;
+ }
+
+ return NULL;
+}
+
+static void remove_gateway(int index, const char *gateway)
+{
+ struct gateway_data *data;
+
+ data = find_gateway(index, gateway);
+ if (data == NULL)
+ return;
+
+ gateway_list = g_slist_remove(gateway_list, data);
+}
+
+static int set_route(struct connman_element *element, const char *gateway)
+{
+ struct ifreq ifr;
+ struct rtentry rt;
+ struct sockaddr_in *addr;
+ int sk, err;
+
+ DBG("element %p", element);
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0)
+ return -1;
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_ifindex = element->index;
+
+ if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+ close(sk);
+ return -1;
+ }
+
+ DBG("ifname %s", ifr.ifr_name);
+
+ memset(&rt, 0, sizeof(rt));
+ rt.rt_flags = RTF_UP | RTF_GATEWAY;
+
+ addr = (struct sockaddr_in *) &rt.rt_dst;
+ addr->sin_family = AF_INET;
+ addr->sin_addr.s_addr = INADDR_ANY;
+
+ addr = (struct sockaddr_in *) &rt.rt_gateway;
+ addr->sin_family = AF_INET;
+ addr->sin_addr.s_addr = inet_addr(gateway);
+
+ addr = (struct sockaddr_in *) &rt.rt_genmask;
+ addr->sin_family = AF_INET;
+ addr->sin_addr.s_addr = INADDR_ANY;
+
+ err = ioctl(sk, SIOCADDRT, &rt);
+ if (err < 0)
+ DBG("default route setting failed (%s)", strerror(errno));
+
+ close(sk);
+
+ return err;
+}
+
+static int del_route(struct connman_element *element, const char *gateway)
+{
+ struct ifreq ifr;
+ struct rtentry rt;
+ struct sockaddr_in *addr;
+ int sk, err;
+
+ DBG("element %p", element);
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0)
+ return -1;
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_ifindex = element->index;
+
+ if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+ close(sk);
+ return -1;
+ }
+
+ DBG("ifname %s", ifr.ifr_name);
+
+ memset(&rt, 0, sizeof(rt));
+ rt.rt_flags = RTF_UP | RTF_GATEWAY;
+
+ addr = (struct sockaddr_in *) &rt.rt_dst;
+ addr->sin_family = AF_INET;
+ addr->sin_addr.s_addr = INADDR_ANY;
+
+ addr = (struct sockaddr_in *) &rt.rt_gateway;
+ addr->sin_family = AF_INET;
+ addr->sin_addr.s_addr = inet_addr(gateway);
+
+ addr = (struct sockaddr_in *) &rt.rt_genmask;
+ addr->sin_family = AF_INET;
+ addr->sin_addr.s_addr = INADDR_ANY;
+
+ err = ioctl(sk, SIOCDELRT, &rt);
+ if (err < 0)
+ DBG("default route removal failed (%s)", strerror(errno));
+
+ close(sk);
+
+ return err;
+}
+
+static DBusConnection *connection;
+
+static void emit_default_signal(struct connman_element *element)
+{
+ DBusMessage *signal;
+ DBusMessageIter entry, value;
+ const char *key = "Default";
+
+ signal = dbus_message_new_signal(element->path,
+ CONNMAN_CONNECTION_INTERFACE, "PropertyChanged");
+ if (signal == NULL)
+ return;
+
+ dbus_message_iter_init_append(signal, &entry);
+
+ dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
+
+ dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
+ DBUS_TYPE_BOOLEAN_AS_STRING, &value);
+ dbus_message_iter_append_basic(&value, DBUS_TYPE_BOOLEAN,
+ &element->enabled);
+ dbus_message_iter_close_container(&entry, &value);
+
+ g_dbus_send_message(connection, signal);
+}
+
+static void set_default(struct connman_element *element, gpointer user_data)
+{
+ struct gateway_data *data = user_data;
+
+ DBG("element %p name %s", element, element->name);
+
+ if (element->index != data->index)
+ return;
+
+ if (element->enabled == TRUE)
+ return;
+
+ connman_element_set_enabled(element, TRUE);
+ emit_default_signal(element);
+}
+
+static void del_default(struct connman_element *element, gpointer user_data)
+{
+ struct gateway_data *data = user_data;
+
+ DBG("element %p name %s", element, element->name);
+
+ if (element->index != data->index)
+ return;
+
+ if (element->enabled == FALSE)
+ return;
+
+ connman_element_set_enabled(element, FALSE);
+ emit_default_signal(element);
+}
+
+static void new_default(struct connman_element *element, gpointer user_data)
+{
+ const char *gateway;
+
+ DBG("element %p name %s", element, element->name);
+
+ if (g_slist_length(gateway_list) > 0)
+ return;
+
+ connman_element_get_value(element,
+ CONNMAN_PROPERTY_ID_IPV4_GATEWAY, &gateway);
+
+ DBG("gateway %s", gateway);
+
+ if (gateway == NULL)
+ return;
+
+ set_route(element, gateway);
+
+ connman_element_set_enabled(element, TRUE);
+ emit_default_signal(element);
+}
+
+static void connection_newgateway(int index, const char *gateway)
+{
+ struct gateway_data *data;
+
+ DBG("index %d gateway %s", index, gateway);
+
+ data = find_gateway(index, gateway);
+ if (data != NULL)
+ return;
+
+ data = g_try_new0(struct gateway_data, 1);
+ if (data == NULL)
+ return;
+
+ data->index = index;
+ data->gateway = g_strdup(gateway);
+
+ gateway_list = g_slist_append(gateway_list, data);
+
+ __connman_element_foreach(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION,
+ set_default, data);
+}
+
+static void connection_delgateway(int index, const char *gateway)
+{
+ struct gateway_data *data;
+
+ DBG("index %d gateway %s", index, gateway);
+
+ data = find_gateway(index, gateway);
+ if (data == NULL)
+ return;
+
+ gateway_list = g_slist_remove(gateway_list, data);
+
+ __connman_element_foreach(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION,
+ del_default, data);
+
+ g_free(data->gateway);
+ g_free(data);
+
+ if (g_slist_length(gateway_list) > 0)
+ return;
+
+ DBG("selecting new default gateway");
+
+ __connman_element_foreach(NULL, CONNMAN_ELEMENT_TYPE_CONNECTION,
+ new_default, NULL);
+}
+
+static struct connman_rtnl connection_rtnl = {
+ .name = "connection",
+ .newgateway = connection_newgateway,
+ .delgateway = connection_delgateway,
+};
+