technology: return already enabled when tethering is enabled
[framework/connectivity/connman.git] / src / technology.c
index 9ff80dc..ad555c9 100644 (file)
@@ -2,7 +2,7 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2012  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
@@ -34,6 +34,13 @@ static DBusConnection *connection;
 
 static GSList *technology_list = NULL;
 
+/*
+ * List of devices with no technology associated with them either because of
+ * no compiled in support or the driver is not yet loaded.
+*/
+static GSList *techless_device_list = NULL;
+static GHashTable *rfkill_list;
+
 static connman_bool_t global_offlinemode;
 
 struct connman_rfkill {
@@ -47,7 +54,6 @@ struct connman_technology {
        int refcount;
        enum connman_service_type type;
        char *path;
-       GHashTable *rfkill_list;
        GSList *device_list;
        int enabled;
        char *regdom;
@@ -64,6 +70,8 @@ struct connman_technology {
 
        DBusMessage *pending_reply;
        guint pending_timeout;
+
+       GSList *scan_pending;
 };
 
 static GSList *driver_list = NULL;
@@ -76,6 +84,17 @@ static gint compare_priority(gconstpointer a, gconstpointer b)
        return driver2->priority - driver1->priority;
 }
 
+static void rfkill_check(gpointer key, gpointer value, gpointer user_data)
+{
+       struct connman_rfkill *rfkill = value;
+       enum connman_service_type type = GPOINTER_TO_INT(user_data);
+
+       /* Calling _technology_rfkill_add will update the tech. */
+       if (rfkill->type == type)
+               __connman_technology_add_rfkill(rfkill->index, type,
+                               rfkill->softblock, rfkill->hardblock);
+}
+
 /**
  * connman_technology_driver_register:
  * @driver: Technology driver definition
@@ -86,11 +105,40 @@ static gint compare_priority(gconstpointer a, gconstpointer b)
  */
 int connman_technology_driver_register(struct connman_technology_driver *driver)
 {
+       GSList *list;
+       struct connman_device *device;
+       enum connman_service_type type;
+
        DBG("Registering %s driver", driver->name);
 
        driver_list = g_slist_insert_sorted(driver_list, driver,
                                                        compare_priority);
 
+       if (techless_device_list == NULL)
+               goto check_rfkill;
+
+       /*
+        * Check for technology less devices if this driver
+        * can service any of them.
+       */
+       for (list = techless_device_list; list; list = list->next) {
+               device = list->data;
+
+               type = __connman_device_get_service_type(device);
+               if (type != driver->type)
+                       continue;
+
+               techless_device_list = g_slist_remove(techless_device_list,
+                                                               device);
+
+               __connman_technology_add_device(device);
+       }
+
+check_rfkill:
+       /* Check for orphaned rfkill switches. */
+       g_hash_table_foreach(rfkill_list, rfkill_check,
+                                       GINT_TO_POINTER(driver->type));
+
        return 0;
 }
 
@@ -196,6 +244,21 @@ void connman_technology_regdom_notify(struct connman_technology *technology,
        technology->regdom = g_strdup(alpha2);
 }
 
+static int set_regdom_by_device(struct connman_technology *technology,
+                                                       const char *alpha2)
+{
+       GSList *list;
+
+       for (list = technology->device_list; list; list = list->next) {
+               struct connman_device *device = list->data;
+
+               if (connman_device_set_regdom(device, alpha2) != 0)
+                       return -ENOTSUP;
+       }
+
+       return 0;
+}
+
 int connman_technology_set_regdom(const char *alpha2)
 {
        GSList *list;
@@ -203,11 +266,14 @@ int connman_technology_set_regdom(const char *alpha2)
        for (list = technology_list; list; list = list->next) {
                struct connman_technology *technology = list->data;
 
-               if (technology->driver == NULL)
-                       continue;
+               if (set_regdom_by_device(technology, alpha2) != 0) {
+                       if (technology->driver == NULL)
+                               continue;
 
-               if (technology->driver->set_regdom)
-                       technology->driver->set_regdom(technology, alpha2);
+                       if (technology->driver->set_regdom != NULL)
+                               technology->driver->set_regdom(technology,
+                                                               alpha2);
+               }
        }
 
        return 0;
@@ -244,64 +310,73 @@ static const char *get_name(enum connman_service_type type)
        return NULL;
 }
 
-static void load_state(struct connman_technology *technology)
+static void save_state(struct connman_technology *technology)
 {
        GKeyFile *keyfile;
        gchar *identifier;
-       GError *error = NULL;
-       connman_bool_t enable;
 
        DBG("technology %p", technology);
 
        keyfile = __connman_storage_load_global();
-       /* Fallback on disabling technology if file not found. */
-       if (keyfile == NULL) {
-               technology->enable_persistent = FALSE;
-               return;
-       }
+       if (keyfile == NULL)
+               keyfile = g_key_file_new();
 
        identifier = g_strdup_printf("%s", get_name(technology->type));
        if (identifier == NULL)
                goto done;
 
-       enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
-       if (error == NULL)
-               technology->enable_persistent = enable;
-       else {
-               technology->enable_persistent = FALSE;
-               g_clear_error(&error);
-       }
+       g_key_file_set_boolean(keyfile, identifier, "Enable",
+                               technology->enable_persistent);
+
 done:
        g_free(identifier);
 
+       __connman_storage_save_global(keyfile);
+
        g_key_file_free(keyfile);
 
        return;
 }
 
-static void save_state(struct connman_technology *technology)
+static void load_state(struct connman_technology *technology)
 {
        GKeyFile *keyfile;
        gchar *identifier;
+       GError *error = NULL;
+       connman_bool_t enable;
 
        DBG("technology %p", technology);
 
        keyfile = __connman_storage_load_global();
-       if (keyfile == NULL)
-               keyfile = g_key_file_new();
+       /* Fallback on disabling technology if file not found. */
+       if (keyfile == NULL) {
+               if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
+                       /* We enable ethernet by default */
+                       technology->enable_persistent = TRUE;
+               else
+                       technology->enable_persistent = FALSE;
+               return;
+       }
 
        identifier = g_strdup_printf("%s", get_name(technology->type));
        if (identifier == NULL)
                goto done;
 
-       g_key_file_set_boolean(keyfile, identifier, "Enable",
-                               technology->enable_persistent);
+       enable = g_key_file_get_boolean(keyfile, identifier, "Enable", &error);
+       if (error == NULL)
+               technology->enable_persistent = enable;
+       else {
+               if (technology->type == CONNMAN_SERVICE_TYPE_ETHERNET)
+                       technology->enable_persistent = TRUE;
+               else
+                       technology->enable_persistent = FALSE;
 
+               save_state(technology);
+               g_clear_error(&error);
+       }
 done:
        g_free(identifier);
 
-       __connman_storage_save_global(keyfile);
-
        g_key_file_free(keyfile);
 
        return;
@@ -339,12 +414,12 @@ static connman_bool_t connman_technology_load_offlinemode()
        /* If there is a error, we enable offlinemode */
        keyfile = __connman_storage_load_global();
        if (keyfile == NULL)
-               return TRUE;
+               return FALSE;
 
        offlinemode = g_key_file_get_boolean(keyfile, "global",
                                                "OfflineMode", &error);
        if (error != NULL) {
-               offlinemode = TRUE;
+               offlinemode = FALSE;
                g_clear_error(&error);
        }
 
@@ -552,7 +627,10 @@ done:
                        technology->pending_timeout = g_timeout_add_seconds(10,
                                        technology_pending_reply, technology);
                } else {
-                       reply = __connman_error_failed(msg, -err);
+                       if (err == -EALREADY)
+                               reply = __connman_error_already_enabled(msg);
+                       else
+                               reply = __connman_error_failed(msg, -err);
                        if (reply != NULL)
                                g_dbus_send_message(connection, reply);
                }
@@ -613,7 +691,10 @@ done:
                        technology->pending_timeout = g_timeout_add_seconds(10,
                                        technology_pending_reply, technology);
                } else {
-                       reply = __connman_error_failed(msg, -err);
+                       if (err == -EALREADY)
+                               reply = __connman_error_already_disabled(msg);
+                       else
+                               reply = __connman_error_failed(msg, -err);
                        if (reply != NULL)
                                g_dbus_send_message(connection, reply);
                }
@@ -635,8 +716,15 @@ static DBusMessage *set_property(DBusConnection *conn,
        if (dbus_message_iter_init(msg, &iter) == FALSE)
                return __connman_error_invalid_arguments(msg);
 
+       if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+               return __connman_error_invalid_arguments(msg);
+
        dbus_message_iter_get_basic(&iter, &name);
        dbus_message_iter_next(&iter);
+
+       if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
+               return __connman_error_invalid_arguments(msg);
+
        dbus_message_iter_recurse(&iter, &value);
 
        type = dbus_message_iter_get_arg_type(&value);
@@ -653,7 +741,7 @@ static DBusMessage *set_property(DBusConnection *conn,
                dbus_message_iter_get_basic(&value, &tethering);
 
                if (technology->tethering == tethering)
-                       return __connman_error_in_progress(msg);
+                       return __connman_error_already_enabled(msg);
 
                err = set_tethering(technology, tethering);
                if (err < 0)
@@ -698,17 +786,6 @@ static DBusMessage *set_property(DBusConnection *conn,
        return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 }
 
-static GDBusMethodTable technology_methods[] = {
-       { "GetProperties", "",   "a{sv}", get_properties },
-       { "SetProperty",   "sv", "",      set_property   },
-       { },
-};
-
-static GDBusSignalTable technology_signals[] = {
-       { "PropertyChanged", "sv" },
-       { },
-};
-
 static struct connman_technology *technology_find(enum connman_service_type type)
 {
        GSList *list;
@@ -725,6 +802,128 @@ static struct connman_technology *technology_find(enum connman_service_type type
        return NULL;
 }
 
+static void reply_scan_pending(struct connman_technology *technology, int err)
+{
+       DBusMessage *reply;
+
+       DBG("technology %p err %d", technology, err);
+
+       while (technology->scan_pending != NULL) {
+               DBusMessage *msg = technology->scan_pending->data;
+
+               DBG("reply to %s", dbus_message_get_sender(msg));
+
+               if (err == 0)
+                       reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
+               else
+                       reply = __connman_error_failed(msg, -err);
+               g_dbus_send_message(connection, reply);
+               dbus_message_unref(msg);
+
+               technology->scan_pending =
+                       g_slist_delete_link(technology->scan_pending,
+                                       technology->scan_pending);
+       }
+}
+
+void __connman_technology_scan_started(struct connman_device *device)
+{
+       DBG("device %p", device);
+}
+
+void __connman_technology_scan_stopped(struct connman_device *device)
+{
+       int count = 0;
+       struct connman_technology *technology;
+       enum connman_service_type type;
+       GSList *list;
+
+       type = __connman_device_get_service_type(device);
+       technology = technology_find(type);
+
+       DBG("technology %p device %p", technology, device);
+
+       if (technology == NULL)
+               return;
+
+       for (list = technology->device_list; list != NULL; list = list->next) {
+               struct connman_device *other_device = list->data;
+
+               if (device == other_device)
+                       continue;
+
+               if (__connman_device_get_service_type(other_device) != type)
+                       continue;
+
+               if (connman_device_get_scanning(other_device) == TRUE)
+                       count += 1;
+       }
+
+       if (count == 0)
+               reply_scan_pending(technology, 0);
+}
+
+void __connman_technology_notify_regdom_by_device(struct connman_device *device,
+                                               int result, const char *alpha2)
+{
+       struct connman_technology *technology;
+       enum connman_service_type type;
+
+       type = __connman_device_get_service_type(device);
+       technology = technology_find(type);
+
+       if (technology == NULL)
+               return;
+
+       if (result < 0) {
+               if (technology->driver != NULL &&
+                               technology->driver->set_regdom != NULL) {
+                       technology->driver->set_regdom(technology, alpha2);
+                       return;
+               }
+
+               alpha2 = NULL;
+       }
+
+       connman_technology_regdom_notify(technology, alpha2);
+}
+
+static DBusMessage *scan(DBusConnection *conn, DBusMessage *msg, void *data)
+{
+       struct connman_technology *technology = data;
+       int err;
+
+       DBG ("technology %p request from %s", technology,
+                       dbus_message_get_sender(msg));
+
+       dbus_message_ref(msg);
+       technology->scan_pending =
+               g_slist_prepend(technology->scan_pending, msg);
+
+       err = __connman_device_request_scan(technology->type);
+       if (err < 0)
+               reply_scan_pending(technology, err);
+
+       return NULL;
+}
+
+static const GDBusMethodTable technology_methods[] = {
+       { GDBUS_DEPRECATED_METHOD("GetProperties",
+                       NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
+                       get_properties) },
+       { GDBUS_METHOD("SetProperty",
+                       GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
+                       NULL, set_property) },
+       { GDBUS_ASYNC_METHOD("Scan", NULL, NULL, scan) },
+       { },
+};
+
+static const GDBusSignalTable technology_signals[] = {
+       { GDBUS_SIGNAL("PropertyChanged",
+                       GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
+       { },
+};
+
 static struct connman_technology *technology_get(enum connman_service_type type)
 {
        struct connman_technology *technology;
@@ -740,8 +939,10 @@ static struct connman_technology *technology_get(enum connman_service_type type)
                return NULL;
 
        technology = technology_find(type);
-       if (technology != NULL)
+       if (technology != NULL) {
+               __sync_fetch_and_add(&technology->refcount, 1);
                return technology;
+       }
 
        /* First check if we have a driver for this technology type */
        for (list = driver_list; list; list = list->next) {
@@ -769,8 +970,6 @@ static struct connman_technology *technology_get(enum connman_service_type type)
        technology->path = g_strdup_printf("%s/technology/%s",
                                                        CONNMAN_PATH, str);
 
-       technology->rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
-                                                       NULL, free_rfkill);
        technology->device_list = NULL;
 
        technology->pending_reply = NULL;
@@ -804,9 +1003,11 @@ static void technology_put(struct connman_technology *technology)
 {
        DBG("technology %p", technology);
 
-       if (__sync_fetch_and_sub(&technology->refcount, 1) != 1)
+       if (__sync_sub_and_fetch(&technology->refcount, 1) > 0)
                return;
 
+       reply_scan_pending(technology, -EINTR);
+
        if (technology->driver) {
                technology->driver->remove(technology);
                technology->driver = NULL;
@@ -820,7 +1021,6 @@ static void technology_put(struct connman_technology *technology)
                                                CONNMAN_TECHNOLOGY_INTERFACE);
 
        g_slist_free(technology->device_list);
-       g_hash_table_destroy(technology->rfkill_list);
 
        g_free(technology->path);
        g_free(technology->regdom);
@@ -902,11 +1102,28 @@ int __connman_technology_add_device(struct connman_device *device)
        type = __connman_device_get_service_type(device);
 
        technology = technology_get(type);
-       if (technology == NULL)
+       if (technology == NULL) {
+               /*
+                * Since no driver can be found for this device at the moment we
+                * add it to the techless device list.
+               */
+               techless_device_list = g_slist_prepend(techless_device_list,
+                                                               device);
+
                return -ENXIO;
+       }
 
-       if (technology->enable_persistent && !global_offlinemode)
-               __connman_device_enable(device);
+       if (technology->enable_persistent && !global_offlinemode) {
+               int err = __connman_device_enable(device);
+               /*
+                * connman_technology_add_device() calls __connman_device_enable()
+                * but since the device is already enabled, the calls does not
+                * propagate through to connman_technology_enabled via
+                * connman_device_set_powered.
+                */
+               if (err == -EALREADY)
+                       __connman_technology_enabled(type);
+       }
        /* if technology persistent state is offline */
        if (!technology->enable_persistent)
                __connman_device_disable(device);
@@ -927,11 +1144,16 @@ int __connman_technology_remove_device(struct connman_device *device)
        type = __connman_device_get_service_type(device);
 
        technology = technology_find(type);
-       if (technology == NULL)
+       if (technology == NULL) {
+               techless_device_list = g_slist_remove(techless_device_list,
+                                                               device);
                return -ENXIO;
+       }
 
        technology->device_list = g_slist_remove(technology->device_list,
                                                                device);
+       technology_put(technology);
+
        return 0;
 }
 
@@ -958,8 +1180,10 @@ int __connman_technology_enabled(enum connman_service_type type)
        if (technology == NULL)
                return -ENXIO;
 
-       if (__sync_fetch_and_add(&technology->enabled, 1) == 0)
-               powered_changed(technology);
+       if (__sync_fetch_and_add(&technology->enabled, 1) != 0)
+               return -EALREADY;
+
+       powered_changed(technology);
 
        if (technology->pending_reply != NULL) {
                g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
@@ -980,6 +1204,9 @@ int __connman_technology_disabled(enum connman_service_type type)
        if (technology == NULL)
                return -ENXIO;
 
+       if (__sync_fetch_and_sub(&technology->enabled, 1) != 1)
+               return -EINPROGRESS;
+
        if (technology->pending_reply != NULL) {
                g_dbus_send_reply(connection, technology->pending_reply, DBUS_TYPE_INVALID);
                dbus_message_unref(technology->pending_reply);
@@ -988,8 +1215,7 @@ int __connman_technology_disabled(enum connman_service_type type)
                technology->pending_timeout = 0;
        }
 
-       if (__sync_fetch_and_sub(&technology->enabled, 1) == 1)
-               powered_changed(technology);
+       powered_changed(technology);
 
        return 0;
 }
@@ -1064,9 +1290,9 @@ int __connman_technology_add_rfkill(unsigned int index,
        DBG("index %u type %d soft %u hard %u", index, type,
                                                        softblock, hardblock);
 
-       technology = technology_get(type);
-       if (technology == NULL)
-               return -ENXIO;
+       rfkill = g_hash_table_lookup(rfkill_list, &index);
+       if (rfkill != NULL)
+               goto done;
 
        rfkill = g_try_new0(struct connman_rfkill, 1);
        if (rfkill == NULL)
@@ -1077,7 +1303,13 @@ int __connman_technology_add_rfkill(unsigned int index,
        rfkill->softblock = softblock;
        rfkill->hardblock = hardblock;
 
-       g_hash_table_replace(technology->rfkill_list, &rfkill->index, rfkill);
+       g_hash_table_insert(rfkill_list, &rfkill->index, rfkill);
+
+done:
+       technology = technology_get(type);
+       /* If there is no driver for this type, ignore it. */
+       if (technology == NULL)
+               return -ENXIO;
 
        if (hardblock) {
                DBG("%s is switched off.", get_name(type));
@@ -1112,11 +1344,7 @@ int __connman_technology_update_rfkill(unsigned int index,
 
        DBG("index %u soft %u hard %u", index, softblock, hardblock);
 
-       technology = technology_find(type);
-       if (technology == NULL)
-               return -ENXIO;
-
-       rfkill = g_hash_table_lookup(technology->rfkill_list, &index);
+       rfkill = g_hash_table_lookup(rfkill_list, &index);
        if (rfkill == NULL)
                return -ENXIO;
 
@@ -1132,6 +1360,11 @@ int __connman_technology_update_rfkill(unsigned int index,
                return 0;
        }
 
+       technology = technology_find(type);
+       /* If there is no driver for this type, ignore it. */
+       if (technology == NULL)
+               return -ENXIO;
+
        if (!global_offlinemode) {
                if (technology->enable_persistent && softblock)
                        return __connman_rfkill_block(type, FALSE);
@@ -1150,15 +1383,15 @@ int __connman_technology_remove_rfkill(unsigned int index,
 
        DBG("index %u", index);
 
-       technology = technology_find(type);
-       if (technology == NULL)
-               return -ENXIO;
-
-       rfkill = g_hash_table_lookup(technology->rfkill_list, &index);
+       rfkill = g_hash_table_lookup(rfkill_list, &index);
        if (rfkill == NULL)
                return -ENXIO;
 
-       g_hash_table_remove(technology->rfkill_list, &index);
+       g_hash_table_remove(rfkill_list, &index);
+
+       technology = technology_find(type);
+       if (technology == NULL)
+               return -ENXIO;
 
        technology_put(technology);
 
@@ -1171,8 +1404,14 @@ int __connman_technology_init(void)
 
        connection = connman_dbus_get_connection();
 
+       rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
+                                                       NULL, free_rfkill);
+
        global_offlinemode = connman_technology_load_offlinemode();
 
+       /* This will create settings file if it is missing */
+       connman_technology_save_offlinemode();
+
        return 0;
 }
 
@@ -1180,5 +1419,7 @@ void __connman_technology_cleanup(void)
 {
        DBG("");
 
+       g_hash_table_destroy(rfkill_list);
+
        dbus_connection_unref(connection);
 }