Imported Upstream version 1.38
[platform/upstream/connman.git] / src / notifier.c
index 846546b..a39d54c 100644 (file)
@@ -2,7 +2,7 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2013  Intel Corporation. All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
@@ -30,6 +30,9 @@
 static DBusConnection *connection = NULL;
 
 static GSList *notifier_list = NULL;
+static GHashTable *service_hash = NULL;
+
+static const char *notifier_state;
 
 static gint compare_priority(gconstpointer a, gconstpointer b)
 {
@@ -47,11 +50,11 @@ static gint compare_priority(gconstpointer a, gconstpointer b)
  *
  * Returns: %0 on success
  */
-int connman_notifier_register(struct connman_notifier *notifier)
+int connman_notifier_register(const struct connman_notifier *notifier)
 {
        DBG("notifier %p name %s", notifier, notifier->name);
 
-       notifier_list = g_slist_insert_sorted(notifier_list, notifier,
+       notifier_list = g_slist_insert_sorted(notifier_list, (void*)notifier,
                                                        compare_priority);
 
        return 0;
@@ -63,158 +66,78 @@ int connman_notifier_register(struct connman_notifier *notifier)
  *
  * Remove a previously registered notifier module
  */
-void connman_notifier_unregister(struct connman_notifier *notifier)
+void connman_notifier_unregister(const struct connman_notifier *notifier)
 {
        DBG("notifier %p name %s", notifier, notifier->name);
 
        notifier_list = g_slist_remove(notifier_list, notifier);
 }
 
-#define MAX_TECHNOLOGIES 10
-
-static volatile gint registered[MAX_TECHNOLOGIES];
-static volatile gint enabled[MAX_TECHNOLOGIES];
-static volatile gint connected[MAX_TECHNOLOGIES];
+static int connected[MAX_CONNMAN_SERVICE_TYPES];
+static int online[MAX_CONNMAN_SERVICE_TYPES];
 
-void __connman_notifier_list_registered(DBusMessageIter *iter, void *user_data)
+static bool notifier_is_online(void)
 {
-       int i;
-
-       for (i = 0; i < MAX_TECHNOLOGIES; i++) {
-               const char *type = __connman_service_type2string(i);
+       unsigned int i;
 
-               if (type == NULL)
-                       continue;
-
-               if (g_atomic_int_get(&registered[i]) > 0)
-                       dbus_message_iter_append_basic(iter,
-                                               DBUS_TYPE_STRING, &type);
+       __sync_synchronize();
+       for (i = 0; i < MAX_CONNMAN_SERVICE_TYPES; i++) {
+               if (online[i] > 0)
+                       return true;
        }
-}
 
-void __connman_notifier_list_enabled(DBusMessageIter *iter, void *user_data)
-{
-       int i;
-
-       for (i = 0; i < MAX_TECHNOLOGIES; i++) {
-               const char *type = __connman_service_type2string(i);
-
-               if (type == NULL)
-                       continue;
-
-               if (g_atomic_int_get(&enabled[i]) > 0)
-                       dbus_message_iter_append_basic(iter,
-                                               DBUS_TYPE_STRING, &type);
-       }
+       return false;
 }
 
-void __connman_notifier_list_connected(DBusMessageIter *iter, void *user_data)
+bool __connman_notifier_is_connected(void)
 {
-       int i;
-
-       for (i = 0; i < MAX_TECHNOLOGIES; i++) {
-               const char *type = __connman_service_type2string(i);
+       unsigned int i;
 
-               if (type == NULL)
-                       continue;
-
-               if (g_atomic_int_get(&connected[i]) > 0)
-                       dbus_message_iter_append_basic(iter,
-                                               DBUS_TYPE_STRING, &type);
+       __sync_synchronize();
+       for (i = 0; i < MAX_CONNMAN_SERVICE_TYPES; i++) {
+               if (connected[i] > 0)
+                       return true;
        }
-}
-
-static void technology_registered(enum connman_service_type type,
-                                               connman_bool_t registered)
-{
-       DBG("type %d registered %d", type, registered);
 
-       connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
-               CONNMAN_MANAGER_INTERFACE, "AvailableTechnologies",
-               DBUS_TYPE_STRING, __connman_notifier_list_registered, NULL);
+       return false;
 }
 
-static void technology_enabled(enum connman_service_type type,
-                                               connman_bool_t enabled)
+static const char *evaluate_notifier_state(void)
 {
-       GSList *list;
-
-       DBG("type %d enabled %d", type, enabled);
-
-       connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
-               CONNMAN_MANAGER_INTERFACE, "EnabledTechnologies",
-               DBUS_TYPE_STRING, __connman_notifier_list_enabled, NULL);
-
-       for (list = notifier_list; list; list = list->next) {
-               struct connman_notifier *notifier = list->data;
-
-               if (notifier->service_enabled)
-                       notifier->service_enabled(type, enabled);
-       }
-}
+       if (notifier_is_online())
+               return "online";
 
-unsigned int __connman_notifier_count_connected(void)
-{
-       unsigned int i, count = 0;
+       if (__connman_notifier_is_connected())
+               return "ready";
 
-       for (i = 0; i < MAX_TECHNOLOGIES; i++) {
-               if (g_atomic_int_get(&connected[i]) > 0)
-                       count++;
-       }
+       if (__connman_technology_get_offlinemode())
+               return "offline";
 
-       return count;
+       return "idle";
 }
 
 const char *__connman_notifier_get_state(void)
 {
-       unsigned int count = __connman_notifier_count_connected();
-
-       if (count > 0)
-               return "online";
-
-       return "offline";
+       return notifier_state;
 }
 
 static void state_changed(void)
 {
-       unsigned int count = __connman_notifier_count_connected();
-       char *state = "offline";
-       DBusMessage *signal;
+       const char *state;
+
+       state = evaluate_notifier_state();
 
-       if (count > 1)
+       if (g_strcmp0(state, notifier_state) == 0)
                return;
 
-       if (count > 0)
-               state = "online";
+       notifier_state = state;
 
        connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
                                CONNMAN_MANAGER_INTERFACE, "State",
-                                               DBUS_TYPE_STRING, &state);
-
-       signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
-                               CONNMAN_MANAGER_INTERFACE, "StateChanged");
-       if (signal == NULL)
-               return;
-
-       dbus_message_append_args(signal, DBUS_TYPE_STRING, &state,
-                                                       DBUS_TYPE_INVALID);
-
-       g_dbus_send_message(connection, signal);
-}
-
-static void technology_connected(enum connman_service_type type,
-                                               connman_bool_t connected)
-{
-       DBG("type %d connected %d", type, connected);
-
-       connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
-               CONNMAN_MANAGER_INTERFACE, "ConnectedTechnologies",
-               DBUS_TYPE_STRING, __connman_notifier_list_connected, NULL);
-
-       state_changed();
+                                       DBUS_TYPE_STRING, &notifier_state);
 }
 
-void __connman_notifier_register(enum connman_service_type type)
+void __connman_notifier_connect(enum connman_service_type type)
 {
        DBG("type %d", type);
 
@@ -223,165 +146,115 @@ void __connman_notifier_register(enum connman_service_type type)
        case CONNMAN_SERVICE_TYPE_SYSTEM:
        case CONNMAN_SERVICE_TYPE_GPS:
        case CONNMAN_SERVICE_TYPE_VPN:
-       case CONNMAN_SERVICE_TYPE_GADGET:
                return;
        case CONNMAN_SERVICE_TYPE_ETHERNET:
+       case CONNMAN_SERVICE_TYPE_GADGET:
        case CONNMAN_SERVICE_TYPE_WIFI:
-       case CONNMAN_SERVICE_TYPE_WIMAX:
        case CONNMAN_SERVICE_TYPE_BLUETOOTH:
        case CONNMAN_SERVICE_TYPE_CELLULAR:
+       case CONNMAN_SERVICE_TYPE_P2P:
                break;
        }
 
-       if (g_atomic_int_exchange_and_add(&registered[type], 1) == 0)
-               technology_registered(type, TRUE);
+       if (__sync_fetch_and_add(&connected[type], 1) == 0) {
+               __connman_technology_set_connected(type, true);
+               state_changed();
+       }
 }
 
-void __connman_notifier_unregister(enum connman_service_type type)
+void __connman_notifier_enter_online(enum connman_service_type type)
 {
        DBG("type %d", type);
 
-       switch (type) {
-       case CONNMAN_SERVICE_TYPE_UNKNOWN:
-       case CONNMAN_SERVICE_TYPE_SYSTEM:
-       case CONNMAN_SERVICE_TYPE_GPS:
-       case CONNMAN_SERVICE_TYPE_VPN:
-       case CONNMAN_SERVICE_TYPE_GADGET:
-               return;
-       case CONNMAN_SERVICE_TYPE_ETHERNET:
-       case CONNMAN_SERVICE_TYPE_WIFI:
-       case CONNMAN_SERVICE_TYPE_WIMAX:
-       case CONNMAN_SERVICE_TYPE_BLUETOOTH:
-       case CONNMAN_SERVICE_TYPE_CELLULAR:
-               break;
-       }
-
-       if (g_atomic_int_dec_and_test(&registered[type]) == TRUE)
-               technology_registered(type, FALSE);
+       if (__sync_fetch_and_add(&online[type], 1) == 0)
+               state_changed();
 }
 
-void __connman_notifier_enable(enum connman_service_type type)
+void __connman_notifier_leave_online(enum connman_service_type type)
 {
        DBG("type %d", type);
 
-       switch (type) {
-       case CONNMAN_SERVICE_TYPE_UNKNOWN:
-       case CONNMAN_SERVICE_TYPE_SYSTEM:
-       case CONNMAN_SERVICE_TYPE_GPS:
-       case CONNMAN_SERVICE_TYPE_VPN:
-       case CONNMAN_SERVICE_TYPE_GADGET:
-               return;
-       case CONNMAN_SERVICE_TYPE_ETHERNET:
-       case CONNMAN_SERVICE_TYPE_WIFI:
-       case CONNMAN_SERVICE_TYPE_WIMAX:
-       case CONNMAN_SERVICE_TYPE_BLUETOOTH:
-       case CONNMAN_SERVICE_TYPE_CELLULAR:
-               break;
-       }
-
-       if (g_atomic_int_exchange_and_add(&enabled[type], 1) == 0)
-               technology_enabled(type, TRUE);
+       if (__sync_fetch_and_sub(&online[type], 1) == 1)
+               state_changed();
 }
 
-void __connman_notifier_disable(enum connman_service_type type)
+void __connman_notifier_disconnect(enum connman_service_type type)
 {
        DBG("type %d", type);
 
-       switch (type) {
-       case CONNMAN_SERVICE_TYPE_UNKNOWN:
-       case CONNMAN_SERVICE_TYPE_SYSTEM:
-       case CONNMAN_SERVICE_TYPE_GPS:
-       case CONNMAN_SERVICE_TYPE_VPN:
-       case CONNMAN_SERVICE_TYPE_GADGET:
+       __sync_synchronize();
+       if (connected[type] == 0) {
+               connman_error("notifier disconnect underflow");
                return;
-       case CONNMAN_SERVICE_TYPE_ETHERNET:
-       case CONNMAN_SERVICE_TYPE_WIFI:
-       case CONNMAN_SERVICE_TYPE_WIMAX:
-       case CONNMAN_SERVICE_TYPE_BLUETOOTH:
-       case CONNMAN_SERVICE_TYPE_CELLULAR:
-               break;
        }
 
-       if (g_atomic_int_dec_and_test(&enabled[type]) == TRUE)
-               technology_enabled(type, FALSE);
-}
-
-void __connman_notifier_connect(enum connman_service_type type)
-{
-       DBG("type %d", type);
-
        switch (type) {
        case CONNMAN_SERVICE_TYPE_UNKNOWN:
        case CONNMAN_SERVICE_TYPE_SYSTEM:
        case CONNMAN_SERVICE_TYPE_GPS:
        case CONNMAN_SERVICE_TYPE_VPN:
-       case CONNMAN_SERVICE_TYPE_GADGET:
                return;
        case CONNMAN_SERVICE_TYPE_ETHERNET:
+       case CONNMAN_SERVICE_TYPE_GADGET:
        case CONNMAN_SERVICE_TYPE_WIFI:
-       case CONNMAN_SERVICE_TYPE_WIMAX:
        case CONNMAN_SERVICE_TYPE_BLUETOOTH:
        case CONNMAN_SERVICE_TYPE_CELLULAR:
+       case CONNMAN_SERVICE_TYPE_P2P:
                break;
        }
 
-       if (g_atomic_int_exchange_and_add(&connected[type], 1) == 0)
-               technology_connected(type, TRUE);
+       if (__sync_fetch_and_sub(&connected[type], 1) != 1)
+               return;
+
+       __connman_technology_set_connected(type, false);
+       state_changed();
 }
 
-void __connman_notifier_disconnect(enum connman_service_type type)
+void __connman_notifier_default_changed(struct connman_service *service)
 {
-       DBG("type %d", type);
+       GSList *list;
 
-       switch (type) {
-       case CONNMAN_SERVICE_TYPE_UNKNOWN:
-       case CONNMAN_SERVICE_TYPE_SYSTEM:
-       case CONNMAN_SERVICE_TYPE_GPS:
-       case CONNMAN_SERVICE_TYPE_VPN:
-       case CONNMAN_SERVICE_TYPE_GADGET:
-               return;
-       case CONNMAN_SERVICE_TYPE_ETHERNET:
-       case CONNMAN_SERVICE_TYPE_WIFI:
-       case CONNMAN_SERVICE_TYPE_WIMAX:
-       case CONNMAN_SERVICE_TYPE_BLUETOOTH:
-       case CONNMAN_SERVICE_TYPE_CELLULAR:
-               break;
-       }
+       for (list = notifier_list; list; list = list->next) {
+               const struct connman_notifier *notifier = list->data;
 
-       if (g_atomic_int_dec_and_test(&connected[type]) == TRUE)
-               technology_connected(type, FALSE);
+               if (notifier->default_changed)
+                       notifier->default_changed(service);
+       }
 }
 
-static void technology_default(enum connman_service_type type)
+void __connman_notifier_service_add(struct connman_service *service,
+                                       const char *name)
 {
-       const char *str;
+       GSList *list;
 
-       str = __connman_service_type2string(type);
-       if (str == NULL)
-               str = "";
+       for (list = notifier_list; list; list = list->next) {
+               const struct connman_notifier *notifier = list->data;
 
-       connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
-                       CONNMAN_MANAGER_INTERFACE, "DefaultTechnology",
-                                               DBUS_TYPE_STRING, &str);
+               if (notifier->service_add)
+                       notifier->service_add(service, name);
+       }
 }
 
-void __connman_notifier_default_changed(struct connman_service *service)
+void __connman_notifier_service_remove(struct connman_service *service)
 {
-       enum connman_service_type type = connman_service_get_type(service);
-       char *interface;
        GSList *list;
 
-       technology_default(type);
+       if (g_hash_table_lookup(service_hash, service)) {
+               /*
+                * This is a temporary check for consistency. It can be
+                * removed when there are no reports for the following
+                * error message.
+                */
+               connman_error("Service state machine inconsistency detected.");
 
-       interface = connman_service_get_interface(service);
-       __connman_tethering_update_interface(interface);
-       g_free(interface);
+               g_hash_table_remove(service_hash, service);
+       }
 
        for (list = notifier_list; list; list = list->next) {
-               struct connman_notifier *notifier = list->data;
+               const struct connman_notifier *notifier = list->data;
 
-               if (notifier->default_changed)
-                       notifier->default_changed(service);
+               if (notifier->service_remove)
+                       notifier->service_remove(service);
        }
 }
 
@@ -390,7 +263,7 @@ void __connman_notifier_proxy_changed(struct connman_service *service)
        GSList *list;
 
        for (list = notifier_list; list; list = list->next) {
-               struct connman_notifier *notifier = list->data;
+               const struct connman_notifier *notifier = list->data;
 
                if (notifier->proxy_changed)
                        notifier->proxy_changed(service);
@@ -406,94 +279,93 @@ static void offlinemode_changed(dbus_bool_t enabled)
                                                DBUS_TYPE_BOOLEAN, &enabled);
 }
 
-void __connman_notifier_offlinemode(connman_bool_t enabled)
+void __connman_notifier_offlinemode(bool enabled)
 {
        GSList *list;
 
        DBG("enabled %d", enabled);
 
-       __connman_profile_changed(FALSE);
-
        offlinemode_changed(enabled);
+       state_changed();
 
        for (list = notifier_list; list; list = list->next) {
-               struct connman_notifier *notifier = list->data;
+               const struct connman_notifier *notifier = list->data;
 
                if (notifier->offline_mode)
                        notifier->offline_mode(enabled);
        }
 }
 
-void __connman_notifier_service_state_changed(struct connman_service *service,
-                                       enum connman_service_state state)
+static void notify_idle_state(bool idle)
 {
        GSList *list;
 
+       DBG("idle %d", idle);
+
        for (list = notifier_list; list; list = list->next) {
-               struct connman_notifier *notifier = list->data;
+               const struct connman_notifier *notifier = list->data;
 
-               if (notifier->service_state_changed)
-                       notifier->service_state_changed(service, state);
+               if (notifier->idle_state)
+                       notifier->idle_state(idle);
        }
 }
 
-void __connman_notifier_ipconfig_changed(struct connman_service *service,
-                                       struct connman_ipconfig *ipconfig)
+void __connman_notifier_service_state_changed(struct connman_service *service,
+                                       enum connman_service_state state)
 {
        GSList *list;
+       unsigned int old_size;
+       bool found;
 
        for (list = notifier_list; list; list = list->next) {
-               struct connman_notifier *notifier = list->data;
+               const struct connman_notifier *notifier = list->data;
 
-               if (notifier->ipconfig_changed)
-                       notifier->ipconfig_changed(service, ipconfig);
+               if (notifier->service_state_changed)
+                       notifier->service_state_changed(service, state);
        }
-}
 
-static connman_bool_t technology_supported(enum connman_service_type type)
-{
-       switch (type) {
-       case CONNMAN_SERVICE_TYPE_UNKNOWN:
-       case CONNMAN_SERVICE_TYPE_SYSTEM:
-       case CONNMAN_SERVICE_TYPE_GPS:
-       case CONNMAN_SERVICE_TYPE_VPN:
-       case CONNMAN_SERVICE_TYPE_GADGET:
-               return FALSE;
-       case CONNMAN_SERVICE_TYPE_ETHERNET:
-       case CONNMAN_SERVICE_TYPE_WIFI:
-       case CONNMAN_SERVICE_TYPE_WIMAX:
-       case CONNMAN_SERVICE_TYPE_BLUETOOTH:
-       case CONNMAN_SERVICE_TYPE_CELLULAR:
-               break;
-       }
+       old_size = g_hash_table_size(service_hash);
+       found = g_hash_table_lookup(service_hash, service);
 
-       return TRUE;
-}
+       switch (state) {
+       case CONNMAN_SERVICE_STATE_UNKNOWN:
+       case CONNMAN_SERVICE_STATE_FAILURE:
+       case CONNMAN_SERVICE_STATE_DISCONNECT:
+       case CONNMAN_SERVICE_STATE_IDLE:
+               if (!found)
+                       break;
 
-connman_bool_t __connman_notifier_is_registered(enum connman_service_type type)
-{
-       DBG("type %d", type);
+               g_hash_table_remove(service_hash, service);
+               if (old_size == 1)
+                       notify_idle_state(true);
 
-       if (technology_supported(type) == FALSE)
-               return FALSE;
+               break;
+       case CONNMAN_SERVICE_STATE_ASSOCIATION:
+       case CONNMAN_SERVICE_STATE_CONFIGURATION:
+       case CONNMAN_SERVICE_STATE_READY:
+       case CONNMAN_SERVICE_STATE_ONLINE:
+               if (found)
+                       break;
 
-       if (g_atomic_int_get(&registered[type]) > 0)
-               return TRUE;
+               g_hash_table_insert(service_hash, service, service);
+               if (old_size == 0)
+                       notify_idle_state(false);
 
-       return FALSE;
+               break;
+       }
 }
 
-connman_bool_t __connman_notifier_is_enabled(enum connman_service_type type)
+void __connman_notifier_ipconfig_changed(struct connman_service *service,
+                                       struct connman_ipconfig *ipconfig)
 {
-       DBG("type %d", type);
-
-       if (technology_supported(type) == FALSE)
-               return FALSE;
+       GSList *list;
 
-       if (g_atomic_int_get(&enabled[type]) > 0)
-               return TRUE;
+       for (list = notifier_list; list; list = list->next) {
+               const struct connman_notifier *notifier = list->data;
 
-       return FALSE;
+               if (notifier->ipconfig_changed)
+                       notifier->ipconfig_changed(service, ipconfig);
+       }
 }
 
 int __connman_notifier_init(void)
@@ -502,6 +374,11 @@ int __connman_notifier_init(void)
 
        connection = connman_dbus_get_connection();
 
+       service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
+                                               NULL, NULL);
+
+       notifier_state = evaluate_notifier_state();
+
        return 0;
 }
 
@@ -509,5 +386,8 @@ void __connman_notifier_cleanup(void)
 {
        DBG("");
 
+       g_hash_table_destroy(service_hash);
+       service_hash = NULL;
+
        dbus_connection_unref(connection);
 }