dhcpv6: Handle address expiration by restarting the stack.
[framework/connectivity/connman.git] / src / network.c
index 058495d..bff0e7e 100644 (file)
@@ -45,6 +45,7 @@ struct connman_network {
        char *group;
        char *path;
        int index;
+       int router_solicit_count;
 
        struct connman_network_driver *driver;
        void *driver_data;
@@ -767,7 +768,8 @@ void connman_network_clear_error(struct connman_network *network)
        __connman_service_clear_error(service);
 }
 
-static void set_configuration(struct connman_network *network)
+static void set_configuration(struct connman_network *network,
+                       enum connman_ipconfig_type type)
 {
        struct connman_service *service;
 
@@ -783,7 +785,7 @@ static void set_configuration(struct connman_network *network)
        service = __connman_service_lookup_from_network(network);
        __connman_service_ipconfig_indicate_state(service,
                                        CONNMAN_SERVICE_STATE_CONFIGURATION,
-                                       CONNMAN_IPCONFIG_TYPE_IPV4);
+                                       type);
 }
 
 static void dhcp_success(struct connman_network *network)
@@ -852,7 +854,7 @@ static int set_connected_fixed(struct connman_network *network)
 
        ipconfig_ipv4 = __connman_service_get_ip4config(service);
 
-       set_configuration(network);
+       set_configuration(network, CONNMAN_IPCONFIG_TYPE_IPV4);
 
        network->connecting = FALSE;
 
@@ -890,7 +892,7 @@ static void set_connected_manual(struct connman_network *network)
        if (__connman_ipconfig_get_local(ipconfig) == NULL)
                __connman_service_read_ip4config(service);
 
-       set_configuration(network);
+       set_configuration(network, CONNMAN_IPCONFIG_TYPE_IPV4);
 
        err = __connman_ipconfig_address_add(ipconfig);
        if (err < 0)
@@ -918,7 +920,7 @@ static int set_connected_dhcp(struct connman_network *network)
 
        DBG("network %p", network);
 
-       set_configuration(network);
+       set_configuration(network, CONNMAN_IPCONFIG_TYPE_IPV4);
 
        err = __connman_dhcp_start(network, dhcp_callback);
        if (err < 0) {
@@ -967,17 +969,161 @@ static int manual_ipv6_set(struct connman_network *network,
        return 0;
 }
 
+static void stop_dhcpv6(struct connman_network *network)
+{
+       __connman_dhcpv6_stop(network);
+}
+
+static void dhcpv6_info_callback(struct connman_network *network,
+                               connman_bool_t success)
+{
+       DBG("success %d", success);
+
+       stop_dhcpv6(network);
+}
+
+static gboolean dhcpv6_set_addresses(struct connman_network *network)
+{
+       struct connman_service *service;
+       struct connman_ipconfig *ipconfig_ipv6;
+       int err = -EINVAL;
+
+       service = __connman_service_lookup_from_network(network);
+       if (service == NULL)
+               goto err;
+
+       connman_network_set_associating(network, FALSE);
+
+       network->connecting = FALSE;
+
+       ipconfig_ipv6 = __connman_service_get_ip6config(service);
+       err = __connman_ipconfig_address_add(ipconfig_ipv6);
+       if (err < 0)
+               goto err;
+
+       err = __connman_ipconfig_gateway_add(ipconfig_ipv6);
+       if (err < 0)
+               goto err;
+
+       return 0;
+
+err:
+       connman_network_set_error(network,
+                               CONNMAN_NETWORK_ERROR_CONFIGURE_FAIL);
+       return err;
+}
+
+static void autoconf_ipv6_set(struct connman_network *network);
+static void dhcpv6_callback(struct connman_network *network,
+                       connman_bool_t success);
+
+/*
+ * Have a separate callback for renew so that we do not do autoconf
+ * in wrong phase as the dhcpv6_callback() is also called when doing
+ * DHCPv6 solicitation.
+ */
+static void dhcpv6_renew_callback(struct connman_network *network,
+                                       connman_bool_t success)
+{
+       if (success == TRUE)
+               dhcpv6_callback(network, success);
+       else {
+               stop_dhcpv6(network);
+
+               /* restart and do solicit again. */
+               autoconf_ipv6_set(network);
+       }
+}
+
+static void dhcpv6_callback(struct connman_network *network,
+                                       connman_bool_t success)
+{
+       DBG("success %d", success);
+
+       /* Start the renew process if necessary */
+       if (success == TRUE) {
+
+               if (dhcpv6_set_addresses(network) < 0) {
+                       stop_dhcpv6(network);
+                       return;
+               }
+
+               if (__connman_dhcpv6_start_renew(network,
+                                       dhcpv6_renew_callback) == -ETIMEDOUT)
+                       dhcpv6_renew_callback(network, FALSE);
+       } else
+               stop_dhcpv6(network);
+}
+
+static void check_dhcpv6(struct nd_router_advert *reply,
+                       unsigned int length, void *user_data)
+{
+       struct connman_network *network = user_data;
+       GSList *prefixes;
+
+       DBG("reply %p", reply);
+
+       if (reply == NULL) {
+               /*
+                * Router solicitation message seem to get lost easily so
+                * try to send it again.
+                */
+               if (network->router_solicit_count > 0) {
+                       DBG("re-send router solicitation %d",
+                                               network->router_solicit_count);
+                       network->router_solicit_count--;
+                       __connman_inet_ipv6_send_rs(network->index, 1,
+                                               check_dhcpv6, network);
+                       return;
+               }
+               connman_network_unref(network);
+               return;
+       }
+
+       network->router_solicit_count = 0;
+
+       prefixes = __connman_inet_ipv6_get_prefixes(reply, length);
+
+       /*
+        * We do stateful/stateless DHCPv6 if router advertisement says so.
+        */
+       if (reply->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED)
+               __connman_dhcpv6_start(network, prefixes, dhcpv6_callback);
+       else if (reply->nd_ra_flags_reserved & ND_RA_FLAG_OTHER)
+               __connman_dhcpv6_start_info(network, dhcpv6_info_callback);
+
+       connman_network_unref(network);
+}
+
 static void autoconf_ipv6_set(struct connman_network *network)
 {
+       struct connman_service *service;
+       struct connman_ipconfig *ipconfig;
+       int index;
+
        DBG("network %p", network);
 
        __connman_device_set_network(network->device, network);
 
        connman_device_set_disconnected(network->device, FALSE);
 
-       /* XXX: Append IPv6 nameservers here */
-
        network->connecting = FALSE;
+
+       service = __connman_service_lookup_from_network(network);
+       if (service == NULL)
+               return;
+
+       ipconfig = __connman_service_get_ip6config(service);
+       if (ipconfig == NULL)
+               return;
+
+       index = connman_ipconfig_get_index(ipconfig);
+
+       connman_network_ref(network);
+
+       /* Try to get stateless DHCPv6 information, RFC 3736 */
+       network->router_solicit_count = 3;
+       __connman_inet_ipv6_send_rs(index, 1, check_dhcpv6, network);
 }
 
 static gboolean set_connected(gpointer user_data)
@@ -1008,6 +1154,7 @@ static gboolean set_connected(gpointer user_data)
                case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
                case CONNMAN_IPCONFIG_METHOD_OFF:
                        break;
+               case CONNMAN_IPCONFIG_METHOD_DHCP:
                case CONNMAN_IPCONFIG_METHOD_AUTO:
                        autoconf_ipv6_set(network);
                        break;
@@ -1020,8 +1167,6 @@ static gboolean set_connected(gpointer user_data)
                                return FALSE;
                        }
                        break;
-               case CONNMAN_IPCONFIG_METHOD_DHCP:
-                       break;
                }
 
                switch (ipv4_method) {
@@ -1050,8 +1195,26 @@ static gboolean set_connected(gpointer user_data)
        } else {
                enum connman_service_state state;
 
+               /*
+                * Resetting solicit count here will prevent the RS resend loop
+                * from sending packets in check_dhcpv6()
+                */
+               network->router_solicit_count = 0;
+
                __connman_device_set_network(network->device, NULL);
 
+               switch (ipv6_method) {
+               case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
+               case CONNMAN_IPCONFIG_METHOD_OFF:
+               case CONNMAN_IPCONFIG_METHOD_FIXED:
+               case CONNMAN_IPCONFIG_METHOD_MANUAL:
+                       break;
+               case CONNMAN_IPCONFIG_METHOD_DHCP:
+               case CONNMAN_IPCONFIG_METHOD_AUTO:
+                       stop_dhcpv6(network);
+                       break;
+               }
+
                switch (ipv4_method) {
                case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
                case CONNMAN_IPCONFIG_METHOD_OFF:
@@ -1169,6 +1332,26 @@ connman_bool_t connman_network_get_associating(struct connman_network *network)
        return network->associating;
 }
 
+int connman_network_connect_hidden(struct connman_network *network,
+                               char *identity, char* passphrase)
+{
+       struct connman_service *service;
+
+       DBG("");
+
+       service = __connman_service_lookup_from_network(network);
+       if (service == NULL)
+               return -EINVAL;
+
+       if (identity != NULL)
+               __connman_service_set_agent_identity(service, identity);
+
+       if (passphrase != NULL)
+               __connman_service_add_passphrase(service, passphrase);
+
+       return __connman_service_connect(service);
+}
+
 /**
  * __connman_network_connect:
  * @network: network structure
@@ -1392,7 +1575,7 @@ int connman_network_set_nameservers(struct connman_network *network,
                                const char *nameservers)
 {
        struct connman_service *service;
-       char **nameservers_array = NULL;
+       char **nameservers_array;
        int i;
 
        DBG("network %p nameservers %s", network, nameservers);
@@ -1403,12 +1586,14 @@ int connman_network_set_nameservers(struct connman_network *network,
 
        __connman_service_nameserver_clear(service);
 
-       if (nameservers != NULL)
-               nameservers_array = g_strsplit(nameservers, " ", 0);
+       if (nameservers == NULL)
+               return 0;
+
+       nameservers_array = g_strsplit(nameservers, " ", 0);
 
        for (i = 0; nameservers_array[i] != NULL; i++) {
                __connman_service_nameserver_append(service,
-                                               nameservers_array[i]);
+                                               nameservers_array[i], FALSE);
        }
 
        g_strfreev(nameservers_array);
@@ -1504,23 +1689,6 @@ connman_uint16_t connman_network_get_wifi_channel(struct connman_network *networ
 }
 
 /**
- * connman_network_set_roaming:
- * @network: network structure
- * @roaming: roaming state
- *
- * Set roaming state for network
- */
-int connman_network_set_roaming(struct connman_network *network,
-                                               connman_bool_t roaming)
-{
-       DBG("network %p roaming %d", network, roaming);
-
-       network->roaming = roaming;
-
-       return 0;
-}
-
-/**
  * connman_network_set_string:
  * @network: network structure
  * @key: unique identifier
@@ -1650,7 +1818,7 @@ int connman_network_set_bool(struct connman_network *network,
        DBG("network %p key %s value %d", network, key, value);
 
        if (g_strcmp0(key, "Roaming") == 0)
-               return connman_network_set_roaming(network, value);
+               network->roaming = value;
        else if (g_strcmp0(key, "WiFi.WPS") == 0)
                network->wifi.wps = value;
        else if (g_strcmp0(key, "WiFi.UseWPS") == 0)