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From 2f3bd5fc3dffd760edd0513c94e8801b36a2bcce Mon Sep 17 00:00:00 2001
From: Iain Lane <iainl@gnome.org>
Date: Mon, 14 May 2018 16:32:25 -0400
Subject: [PATCH 04/15] libgdm: Drop weak refs on the GDBusConnection

The GDBusProxies hold a strong reference to the connection themselves,
so maintaining separate weak references is unnecessary.

This commit drops those extraneous weak references.

https://bugzilla.gnome.org/show_bug.cgi?id=795940
---
 libgdm/gdm-client.c | 47 ---------------------------------------------
 1 file changed, 47 deletions(-)

diff --git a/libgdm/gdm-client.c b/libgdm/gdm-client.c
index e7b93e382..f327344ec 100644
--- a/libgdm/gdm-client.c
+++ b/libgdm/gdm-client.c
@@ -625,67 +625,60 @@ gdm_client_open_reauthentication_channel_sync (GdmClient     *client,
                                                                    username,
                                                                    &address,
                                                                    cancellable,
                                                                    error);
 
         if (!ret) {
                 goto out;
         }
 
         g_debug ("GdmClient: connecting to address: %s", client->priv->address);
 
         connection = g_dbus_connection_new_for_address_sync (address,
                                                              G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
                                                              NULL,
                                                              cancellable,
                                                              error);
 
         if (connection == NULL) {
                 g_free (address);
                 goto out;
         }
         g_free (address);
 
         user_verifier = gdm_user_verifier_proxy_new_sync (connection,
                                                           G_DBUS_PROXY_FLAGS_NONE,
                                                           NULL,
                                                           SESSION_DBUS_PATH,
                                                           cancellable,
                                                           error);
 
-        if (user_verifier != NULL) {
-                g_object_weak_ref (G_OBJECT (user_verifier),
-                                   (GWeakNotify)
-                                   g_object_unref,
-                                   connection);
-        }
-
  out:
         return user_verifier;
 }
 
 /**
  * gdm_client_open_reauthentication_channel:
  * @client: a #GdmClient
  * @username: user to reauthenticate
  * @callback: a #GAsyncReadyCallback to call when the request is satisfied
  * @user_data: The data to pass to @callback
  * @cancellable: a #GCancellable
  *
  * Gets a #GdmUserVerifier object that can be used to
  * reauthenticate an already logged in user.
  */
 void
 gdm_client_open_reauthentication_channel (GdmClient           *client,
                                           const char          *username,
                                           GCancellable        *cancellable,
                                           GAsyncReadyCallback  callback,
                                           gpointer             user_data)
 {
         GTask *task;
 
         g_return_if_fail (GDM_IS_CLIENT (client));
 
         task = g_task_new (G_OBJECT (client),
                            cancellable,
                            callback,
                            user_data);
@@ -736,66 +729,60 @@ gdm_client_open_reauthentication_channel_finish (GdmClient       *client,
  * Returns: (transfer full): #GdmUserVerifier or %NULL if not connected
  */
 GdmUserVerifier *
 gdm_client_get_user_verifier_sync (GdmClient     *client,
                                    GCancellable  *cancellable,
                                    GError       **error)
 {
         g_autoptr(GDBusConnection) connection = NULL;
 
         if (client->priv->user_verifier != NULL) {
                 return g_object_ref (client->priv->user_verifier);
         }
 
         connection = gdm_client_get_connection_sync (client, cancellable, error);
 
         if (connection == NULL) {
                 return NULL;
         }
 
         client->priv->user_verifier = gdm_user_verifier_proxy_new_sync (connection,
                                                                         G_DBUS_PROXY_FLAGS_NONE,
                                                                         NULL,
                                                                         SESSION_DBUS_PATH,
                                                                         cancellable,
                                                                         error);
 
         if (client->priv->user_verifier != NULL) {
                 g_object_add_weak_pointer (G_OBJECT (client->priv->user_verifier),
                                            (gpointer *)
                                            &client->priv->user_verifier);
-                g_object_ref (connection);
-                g_object_weak_ref (G_OBJECT (client->priv->user_verifier),
-                                   (GWeakNotify)
-                                   g_object_unref,
-                                   client->priv->connection);
-
                 if (client->priv->enabled_extensions != NULL) {
                         gboolean res;
 
                         client->priv->user_verifier_extensions = g_hash_table_new_full (g_str_hash,
                                                                                         g_str_equal,
                                                                                         NULL,
                                                                                         (GDestroyNotify)
                                                                                         free_interface_skeleton);
                         res = gdm_user_verifier_call_enable_extensions_sync (client->priv->user_verifier,
                                                                             (const char * const *)
                                                                              client->priv->enabled_extensions,
                                                                              cancellable,
                                                                              NULL);
 
                         if (res) {
                                 size_t i;
                                 for (i = 0; client->priv->enabled_extensions[i] != NULL; i++) {
                                             if (strcmp (client->priv->enabled_extensions[i],
                                                         gdm_user_verifier_choice_list_interface_info ()->name) == 0) {
                                                         GdmUserVerifierChoiceList *choice_list_interface;
                                                         choice_list_interface = gdm_user_verifier_choice_list_proxy_new_sync (client->priv->connection,
                                                                                                                               G_DBUS_PROXY_FLAGS_NONE,
                                                                                                                               NULL,
                                                                                                                               SESSION_DBUS_PATH,
                                                                                                                               cancellable,
                                                                                                                               NULL);
                                                         if (choice_list_interface != NULL)
                                                                     g_hash_table_insert (client->priv->user_verifier_extensions, client->priv->enabled_extensions[i], choice_list_interface);
                                             }
                                 }
@@ -881,65 +868,60 @@ gdm_client_get_user_verifier (GdmClient           *client,
  * @result: The #GAsyncResult from the callback
  * @error: a #GError
  *
  * Finishes an operation started with
  * gdm_client_get_user_verifier().
  *
  * Returns: (transfer full): a #GdmUserVerifier
  */
 GdmUserVerifier *
 gdm_client_get_user_verifier_finish (GdmClient       *client,
                                      GAsyncResult    *result,
                                      GError         **error)
 {
         GdmUserVerifier *user_verifier;
 
         g_return_val_if_fail (GDM_IS_CLIENT (client), FALSE);
 
         if (client->priv->user_verifier != NULL)
                 return g_object_ref (client->priv->user_verifier);
 
         user_verifier = g_task_propagate_pointer (G_TASK (result), error);
         if (user_verifier == NULL)
                 return NULL;
 
         client->priv->user_verifier = user_verifier;
 
         g_object_add_weak_pointer (G_OBJECT (client->priv->user_verifier),
                                    (gpointer *)
                                    &client->priv->user_verifier);
 
-        g_object_weak_ref (G_OBJECT (client->priv->user_verifier),
-                           (GWeakNotify)
-                           g_object_unref,
-                           client->priv->connection);
-
         return user_verifier;
 }
 
 /**
  * gdm_client_get_user_verifier_choice_list:
  * @client: a #GdmClient
  *
  * Gets a #GdmUserVerifierChoiceList object that can be used to
  * verify a user's local account.
  *
  * Returns: (transfer none): #GdmUserVerifierChoiceList or %NULL if user
  * verifier isn't yet fetched, or daemon doesn't support choice lists
  */
 GdmUserVerifierChoiceList *
 gdm_client_get_user_verifier_choice_list (GdmClient *client)
 {
         if (client->priv->user_verifier_extensions == NULL)
                 return NULL;
 
         return g_hash_table_lookup (client->priv->user_verifier_extensions,
                                     gdm_user_verifier_choice_list_interface_info ()->name);
 }
 
 static void
 on_timed_login_details_got (GdmGreeter   *greeter,
                             GAsyncResult *result)
 {
     gdm_greeter_call_get_timed_login_details_finish (greeter, NULL, NULL, NULL, result, NULL);
 }
 
@@ -1054,112 +1036,104 @@ gdm_client_get_greeter (GdmClient           *client,
  * @result: The #GAsyncResult from the callback
  * @error: a #GError
  *
  * Finishes an operation started with
  * gdm_client_get_greeter().
  *
  * Returns: (transfer full): a #GdmGreeter
  */
 GdmGreeter *
 gdm_client_get_greeter_finish (GdmClient       *client,
                                GAsyncResult    *result,
                                GError         **error)
 {
         GdmGreeter *greeter;
 
         g_return_val_if_fail (GDM_IS_CLIENT (client), FALSE);
 
         if (client->priv->greeter != NULL)
                 return g_object_ref (client->priv->greeter);
 
         greeter = g_task_propagate_pointer (G_TASK (result), error);
         if (greeter == NULL)
                 return NULL;
 
         client->priv->greeter = greeter;
 
         g_object_add_weak_pointer (G_OBJECT (client->priv->greeter),
                                    (gpointer *)
                                    &client->priv->greeter);
 
-        g_object_weak_ref (G_OBJECT (client->priv->greeter),
-                           (GWeakNotify)
-                           g_object_unref,
-                           client->priv->connection);
         return greeter;
 }
 
 /**
  * gdm_client_get_greeter_sync:
  * @client: a #GdmClient
  * @cancellable: a #GCancellable
  * @error: a #GError
  *
  * Gets a #GdmGreeter object that can be used
  * to do do various login screen related tasks, such
  * as selecting a users session, and starting that
  * session.
  *
  * Returns: (transfer full): #GdmGreeter or %NULL if caller is not a greeter
  */
 GdmGreeter *
 gdm_client_get_greeter_sync (GdmClient     *client,
                              GCancellable  *cancellable,
                              GError       **error)
 {
         g_autoptr(GDBusConnection) connection = NULL;
 
         if (client->priv->greeter != NULL) {
                 return g_object_ref (client->priv->greeter);
         }
 
         connection = gdm_client_get_connection_sync (client, cancellable, error);
 
         if (connection == NULL) {
                 return NULL;
         }
 
         client->priv->greeter = gdm_greeter_proxy_new_sync (connection,
                                                             G_DBUS_PROXY_FLAGS_NONE,
                                                             NULL,
                                                             SESSION_DBUS_PATH,
                                                             cancellable,
                                                             error);
 
         if (client->priv->greeter != NULL) {
                 g_object_add_weak_pointer (G_OBJECT (client->priv->greeter),
                                            (gpointer *)
                                            &client->priv->greeter);
-                g_object_weak_ref (G_OBJECT (client->priv->greeter),
-                                   (GWeakNotify)
-                                   g_object_unref,
-                                   client->priv->connection);
 
                 query_for_timed_login_requested_signal (client->priv->greeter);
         }
 
         return client->priv->greeter;
 }
 
 static void
 on_remote_greeter_proxy_created (GObject            *object,
                                  GAsyncResult       *result,
                                  GTask              *task)
 {
         GdmRemoteGreeter *remote_greeter;
         GError           *error = NULL;
 
         remote_greeter = gdm_remote_greeter_proxy_new_finish (result, &error);
         if (remote_greeter == NULL) {
                 g_task_return_error (task, error);
                 g_object_unref (task);
                 return;
         }
 
         g_task_return_pointer (task,
                                remote_greeter,
                                (GDestroyNotify) g_object_unref);
         g_object_unref (task);
 }
 
 static void
 on_connection_for_remote_greeter (GdmClient          *client,
@@ -1236,113 +1210,103 @@ gdm_client_get_remote_greeter (GdmClient           *client,
  * @result: The #GAsyncResult from the callback
  * @error: a #GError
  *
  * Finishes an operation started with
  * gdm_client_get_remote_greeter().
  *
  * Returns: (transfer full): a #GdmRemoteGreeter
  */
 GdmRemoteGreeter *
 gdm_client_get_remote_greeter_finish (GdmClient     *client,
                                       GAsyncResult  *result,
                                       GError       **error)
 {
         GdmRemoteGreeter *remote_greeter;
 
         g_return_val_if_fail (GDM_IS_CLIENT (client), FALSE);
 
         if (client->priv->remote_greeter != NULL)
                 return g_object_ref (client->priv->remote_greeter);
 
         remote_greeter = g_task_propagate_pointer (G_TASK (result), error);
         if (remote_greeter == NULL)
                 return NULL;
 
         client->priv->remote_greeter = remote_greeter;
 
         g_object_add_weak_pointer (G_OBJECT (client->priv->remote_greeter),
                                    (gpointer *)
                                    &client->priv->remote_greeter);
 
-        g_object_weak_ref (G_OBJECT (client->priv->remote_greeter),
-                           (GWeakNotify)
-                           g_object_unref,
-                           client->priv->connection);
-
         return remote_greeter;
 }
 
 /**
  * gdm_client_get_remote_greeter_sync:
  * @client: a #GdmClient
  * @cancellable: a #GCancellable
  * @error: a #GError
  *
  * Gets a #GdmRemoteGreeter object that can be used
  * to do do various remote login screen related tasks,
  * such as disconnecting.
  *
  * Returns: (transfer full): #GdmRemoteGreeter or %NULL if caller is not remote
  */
 GdmRemoteGreeter *
 gdm_client_get_remote_greeter_sync (GdmClient     *client,
                                     GCancellable  *cancellable,
                                     GError       **error)
 {
         g_autoptr(GDBusConnection) connection = NULL;
 
         if (client->priv->remote_greeter != NULL) {
                 return g_object_ref (client->priv->remote_greeter);
         }
 
         connection = gdm_client_get_connection_sync (client, cancellable, error);
 
         if (connection == NULL) {
                 return NULL;
         }
 
         client->priv->remote_greeter = gdm_remote_greeter_proxy_new_sync (connection,
                                                                           G_DBUS_PROXY_FLAGS_NONE,
                                                                           NULL,
                                                                           SESSION_DBUS_PATH,
                                                                           cancellable,
                                                                           error);
 
         if (client->priv->remote_greeter != NULL) {
                 g_object_add_weak_pointer (G_OBJECT (client->priv->remote_greeter),
                                            (gpointer *)
                                            &client->priv->remote_greeter);
-                g_object_ref (connection);
-                g_object_weak_ref (G_OBJECT (client->priv->remote_greeter),
-                                   (GWeakNotify)
-                                   g_object_unref,
-                                   client->priv->connection);
         }
 
         return client->priv->remote_greeter;
 }
 
 static void
 on_chooser_proxy_created (GObject            *source,
                           GAsyncResult       *result,
                           GTask              *task)
 {
         GdmChooser   *chooser;
         GError       *error = NULL;
 
         chooser = gdm_chooser_proxy_new_finish (result, &error);
         if (chooser == NULL) {
                 g_task_return_error (task, error);
                 g_object_unref (task);
                 return;
         }
 
         g_task_return_pointer (task,
                                chooser,
                                (GDestroyNotify) g_object_unref);
         g_object_unref (task);
 }
 
 static void
 on_connection_for_chooser (GdmClient          *client,
                            GAsyncResult       *result,
                            GTask              *task)
@@ -1417,114 +1381,103 @@ gdm_client_get_chooser (GdmClient           *client,
  * @result: The #GAsyncResult from the callback
  * @error: a #GError
  *
  * Finishes an operation started with
  * gdm_client_get_chooser().
  *
  * Returns: (transfer full): a #GdmChooser
  */
 GdmChooser *
 gdm_client_get_chooser_finish (GdmClient       *client,
                                GAsyncResult    *result,
                                GError         **error)
 {
         GdmChooser *chooser;
 
         g_return_val_if_fail (GDM_IS_CLIENT (client), FALSE);
 
         if (client->priv->chooser != NULL)
                 return g_object_ref (client->priv->chooser);
 
         chooser = g_task_propagate_pointer (G_TASK (result), error);
         if (chooser == NULL)
                 return NULL;
 
         client->priv->chooser = chooser;
 
         g_object_add_weak_pointer (G_OBJECT (client->priv->chooser),
                                    (gpointer *)
                                    &client->priv->chooser);
 
-        g_object_ref (connection);
-        g_object_weak_ref (G_OBJECT (client->priv->chooser),
-                           (GWeakNotify)
-                           g_object_unref,
-                           client->priv->connection);
-
         return chooser;
 }
 
 /**
  * gdm_client_get_chooser_sync:
  * @client: a #GdmClient
  * @cancellable: a #GCancellable
  * @error: a #GError
  *
  * Gets a #GdmChooser object that can be used
  * to do do various XDMCP chooser related tasks, such
  * as selecting a host or disconnecting.
  *
  * Returns: (transfer full): #GdmChooser or %NULL if caller is not a chooser
  */
 GdmChooser *
 gdm_client_get_chooser_sync (GdmClient     *client,
                              GCancellable  *cancellable,
                              GError       **error)
 {
         g_autoptr(GDBusConnection) connection = NULL;
 
         if (client->priv->chooser != NULL) {
                 return g_object_ref (client->priv->chooser);
         }
 
         connection = gdm_client_get_connection_sync (client, cancellable, error);
 
         if (connection == NULL) {
                 return NULL;
         }
 
         client->priv->chooser = gdm_chooser_proxy_new_sync (connection,
                                                             G_DBUS_PROXY_FLAGS_NONE,
                                                             NULL,
                                                             SESSION_DBUS_PATH,
                                                             cancellable,
                                                             error);
 
         if (client->priv->chooser != NULL) {
                 g_object_add_weak_pointer (G_OBJECT (client->priv->chooser),
                                            (gpointer *)
                                            &client->priv->chooser);
-                g_object_ref (connection);
-                g_object_weak_ref (G_OBJECT (client->priv->chooser),
-                                   (GWeakNotify)
-                                   g_object_unref,
-                                   client->priv->connection);
         }
 
         return client->priv->chooser;
 }
 
 static void
 gdm_client_class_init (GdmClientClass *klass)
 {
         GObjectClass   *object_class = G_OBJECT_CLASS (klass);
 
         object_class->finalize = gdm_client_finalize;
 
         g_type_class_add_private (klass, sizeof (GdmClientPrivate));
 
 }
 
 static void
 gdm_client_init (GdmClient *client)
 {
 
         client->priv = GDM_CLIENT_GET_PRIVATE (client);
 }
 
 static void
 gdm_client_finalize (GObject *object)
 {
         GdmClient *client;
 
         g_return_if_fail (object != NULL);
         g_return_if_fail (GDM_IS_CLIENT (object));
-- 
2.25.1