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gapplication: Validate actions activated over D-Bus
As with the previous commit, the arguments to `ActivateAction` have to be validated before being passed to `g_action_group_activate_action()`. As they come over D-Bus, they are coming from an untrusted source. Includes unit tests for all D-Bus methods on `GApplication`. Signed-off-by: Philip Withnall <pwithnall@endlessos.org> Helps: #1904
This commit is contained in:
Philip Withnall
parent
dbe4531e86
commit
da634e7a25
@ -286,6 +286,7 @@ g_application_impl_method_call (GDBusConnection *connection,
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GVariant *platform_data;
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GVariant *platform_data;
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GVariantIter *iter;
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GVariantIter *iter;
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const gchar *name;
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const gchar *name;
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const GVariantType *parameter_type = NULL;
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/* Only on the freedesktop interface */
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/* Only on the freedesktop interface */
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@ -293,6 +294,31 @@ g_application_impl_method_call (GDBusConnection *connection,
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g_variant_iter_next (iter, "v", ¶meter);
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g_variant_iter_next (iter, "v", ¶meter);
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g_variant_iter_free (iter);
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g_variant_iter_free (iter);
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/* Check the action exists and the parameter type matches. */
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if (!g_action_group_query_action (impl->exported_actions,
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name, NULL, ¶meter_type,
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NULL, NULL, NULL))
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{
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g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
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"Unknown action ‘%s’", name);
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g_clear_pointer (¶meter, g_variant_unref);
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g_variant_unref (platform_data);
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return;
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}
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if (!((parameter_type == NULL && parameter == NULL) ||
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(parameter_type != NULL && parameter != NULL && g_variant_is_of_type (parameter, parameter_type))))
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{
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g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
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"Invalid parameter for action ‘%s’: expected type %s but got type %s",
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name,
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(parameter_type != NULL) ? (const gchar *) parameter_type : "()",
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(parameter != NULL) ? g_variant_get_type_string (parameter) : "()");
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g_clear_pointer (¶meter, g_variant_unref);
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g_variant_unref (platform_data);
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return;
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}
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class->before_emit (impl->app, platform_data);
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class->before_emit (impl->app, platform_data);
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g_action_group_activate_action (impl->exported_actions, name, parameter);
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g_action_group_activate_action (impl->exported_actions, name, parameter);
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class->after_emit (impl->app, platform_data);
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class->after_emit (impl->app, platform_data);
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@ -1194,6 +1194,441 @@ test_replace (gconstpointer data)
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}
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}
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}
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}
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static void
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dbus_activate_cb (GApplication *app,
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gpointer user_data)
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{
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guint *n_activations = user_data;
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*n_activations = *n_activations + 1;
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g_main_context_wakeup (NULL);
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}
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static void dbus_startup_reply_cb (GObject *source_object,
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GAsyncResult *result,
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gpointer user_data);
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static void
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dbus_startup_cb (GApplication *app,
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gpointer user_data)
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{
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GDBusConnection *connection = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
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GDBusMessage *message = G_DBUS_MESSAGE (user_data);
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g_assert_nonnull (connection);
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g_dbus_connection_send_message_with_reply (connection, message,
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G_DBUS_SEND_MESSAGE_FLAGS_NONE, -1,
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NULL, NULL,
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dbus_startup_reply_cb, g_object_ref (app));
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g_clear_object (&connection);
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}
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static void
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dbus_startup_reply_cb (GObject *source_object,
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GAsyncResult *result,
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gpointer user_data)
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{
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GDBusConnection *connection = G_DBUS_CONNECTION (source_object);
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GApplication *app = G_APPLICATION (user_data);
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GDBusMessage *reply = NULL;
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GError *local_error = NULL;
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reply = g_dbus_connection_send_message_with_reply_finish (connection, result, &local_error);
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g_assert_no_error (local_error);
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/* Nothing to check on the reply for now. */
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g_clear_object (&reply);
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g_application_release (app);
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g_clear_object (&app);
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}
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static void
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test_dbus_activate (void)
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{
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GTestDBus *bus = NULL;
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GVariantBuilder builder;
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GDBusMessage *message = NULL;
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GPtrArray *messages = NULL; /* (element-type GDBusMessage) (owned) */
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gsize i;
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g_test_summary ("Test that calling the Activate D-Bus method works");
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/* Try various different messages */
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messages = g_ptr_array_new_with_free_func (g_object_unref);
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/* Via org.gtk.Application */
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.Activate",
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"/org/gtk/TestApplication/Activate",
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"org.gtk.Application",
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"Activate");
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g_dbus_message_set_body (message, g_variant_new ("(a{sv})", NULL));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* Via org.freedesktop.Application */
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.Activate",
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"/org/gtk/TestApplication/Activate",
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"org.freedesktop.Application",
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"Activate");
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g_dbus_message_set_body (message, g_variant_new ("(a{sv})", NULL));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* With some platform data */
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g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));
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g_variant_builder_add (&builder, "{sv}", "cwd", g_variant_new_bytestring ("/home/henry"));
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.Activate",
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"/org/gtk/TestApplication/Activate",
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"org.gtk.Application",
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"Activate");
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g_dbus_message_set_body (message, g_variant_new ("(a{sv})", &builder));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* Try each message */
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bus = g_test_dbus_new (G_TEST_DBUS_NONE);
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g_test_dbus_up (bus);
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for (i = 0; i < messages->len; i++)
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{
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GApplication *app = NULL;
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gulong activate_id, startup_id;
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guint n_activations = 0;
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g_test_message ("Message %" G_GSIZE_FORMAT, i);
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app = g_application_new ("org.gtk.TestApplication.Activate", G_APPLICATION_DEFAULT_FLAGS);
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activate_id = g_signal_connect (app, "activate", G_CALLBACK (dbus_activate_cb), &n_activations);
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startup_id = g_signal_connect (app, "startup", G_CALLBACK (dbus_startup_cb), messages->pdata[i]);
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g_application_hold (app);
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g_application_run (app, 0, NULL);
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/* It’ll be activated once as normal, and once due to the D-Bus call */
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g_assert_cmpuint (n_activations, ==, 2);
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g_signal_handler_disconnect (app, startup_id);
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g_signal_handler_disconnect (app, activate_id);
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g_clear_object (&app);
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}
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g_ptr_array_unref (messages);
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g_test_dbus_down (bus);
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g_clear_object (&bus);
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}
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static void
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dbus_activate_noop_cb (GApplication *app,
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gpointer user_data)
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{
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/* noop */
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}
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static void
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dbus_open_cb (GApplication *app,
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gpointer files,
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int n_files,
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char *hint,
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gpointer user_data)
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{
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guint *n_opens = user_data;
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*n_opens = *n_opens + 1;
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g_main_context_wakeup (NULL);
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}
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static void
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test_dbus_open (void)
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{
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GTestDBus *bus = NULL;
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GVariantBuilder builder, builder2;
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GDBusMessage *message = NULL;
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GPtrArray *messages = NULL; /* (element-type GDBusMessage) (owned) */
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gsize i;
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g_test_summary ("Test that calling the Open D-Bus method works");
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/* Try various different messages */
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messages = g_ptr_array_new_with_free_func (g_object_unref);
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/* Via org.gtk.Application */
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g_variant_builder_init (&builder, G_VARIANT_TYPE ("as"));
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g_variant_builder_add (&builder, "s", "file:///home/henry/test");
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.Open",
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"/org/gtk/TestApplication/Open",
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"org.gtk.Application",
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"Open");
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g_dbus_message_set_body (message, g_variant_new ("(assa{sv})", &builder, "hint", NULL));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* Via org.freedesktop.Application (which has no hint parameter) */
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g_variant_builder_init (&builder, G_VARIANT_TYPE ("as"));
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g_variant_builder_add (&builder, "s", "file:///home/henry/test");
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.Open",
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"/org/gtk/TestApplication/Open",
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"org.freedesktop.Application",
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"Open");
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g_dbus_message_set_body (message, g_variant_new ("(asa{sv})", &builder, NULL));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* With some platform data and more than one file */
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g_variant_builder_init (&builder, G_VARIANT_TYPE ("as"));
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g_variant_builder_add (&builder, "s", "file:///home/henry/test");
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g_variant_builder_add (&builder, "s", "file:///home/henry/test2");
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g_variant_builder_init (&builder2, G_VARIANT_TYPE ("a{sv}"));
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g_variant_builder_add (&builder2, "{sv}", "cwd", g_variant_new_bytestring ("/home/henry"));
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.Open",
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"/org/gtk/TestApplication/Open",
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"org.gtk.Application",
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"Open");
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g_dbus_message_set_body (message, g_variant_new ("(assa{sv})", &builder, "", &builder2));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* No files */
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.Open",
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"/org/gtk/TestApplication/Open",
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"org.gtk.Application",
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"Open");
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g_dbus_message_set_body (message, g_variant_new ("(assa{sv})", NULL, "", NULL));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* Try each message */
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bus = g_test_dbus_new (G_TEST_DBUS_NONE);
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g_test_dbus_up (bus);
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for (i = 0; i < messages->len; i++)
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{
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GApplication *app = NULL;
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gulong activate_id, open_id, startup_id;
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guint n_opens = 0;
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g_test_message ("Message %" G_GSIZE_FORMAT, i);
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app = g_application_new ("org.gtk.TestApplication.Open", G_APPLICATION_HANDLES_OPEN);
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activate_id = g_signal_connect (app, "activate", G_CALLBACK (dbus_activate_noop_cb), NULL);
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open_id = g_signal_connect (app, "open", G_CALLBACK (dbus_open_cb), &n_opens);
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startup_id = g_signal_connect (app, "startup", G_CALLBACK (dbus_startup_cb), messages->pdata[i]);
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g_application_hold (app);
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g_application_run (app, 0, NULL);
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g_assert_cmpuint (n_opens, ==, 1);
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g_signal_handler_disconnect (app, startup_id);
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g_signal_handler_disconnect (app, open_id);
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g_signal_handler_disconnect (app, activate_id);
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g_clear_object (&app);
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}
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g_ptr_array_unref (messages);
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g_test_dbus_down (bus);
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g_clear_object (&bus);
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}
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static void
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dbus_command_line_cb (GApplication *app,
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GApplicationCommandLine *command_line,
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gpointer user_data)
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{
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guint *n_command_lines = user_data;
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*n_command_lines = *n_command_lines + 1;
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g_main_context_wakeup (NULL);
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}
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static void
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test_dbus_command_line (void)
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{
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GTestDBus *bus = NULL;
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GVariantBuilder builder;
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GDBusMessage *message = NULL;
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GPtrArray *messages = NULL; /* (element-type GDBusMessage) (owned) */
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gsize i;
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g_test_summary ("Test that calling the CommandLine D-Bus method works");
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/* Try various different messages */
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messages = g_ptr_array_new_with_free_func (g_object_unref);
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/* Via org.gtk.Application */
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g_variant_builder_init (&builder, G_VARIANT_TYPE ("aay"));
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g_variant_builder_add (&builder, "^ay", "test-program");
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g_variant_builder_add (&builder, "^ay", "--open");
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g_variant_builder_add (&builder, "^ay", "/path/to/something");
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message = g_dbus_message_new_method_call ("org.gtk.TestApplication.CommandLine",
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"/org/gtk/TestApplication/CommandLine",
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"org.gtk.Application",
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"CommandLine");
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g_dbus_message_set_body (message, g_variant_new ("(oaaya{sv})",
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"/my/org/gtk/private/CommandLine",
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&builder, NULL));
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g_ptr_array_add (messages, g_steal_pointer (&message));
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/* Try each message */
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bus = g_test_dbus_new (G_TEST_DBUS_NONE);
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g_test_dbus_up (bus);
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for (i = 0; i < messages->len; i++)
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{
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GApplication *app = NULL;
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gulong activate_id, command_line_id, startup_id;
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guint n_command_lines = 0;
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g_test_message ("Message %" G_GSIZE_FORMAT, i);
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app = g_application_new ("org.gtk.TestApplication.CommandLine", G_APPLICATION_HANDLES_COMMAND_LINE);
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activate_id = g_signal_connect (app, "activate", G_CALLBACK (dbus_activate_noop_cb), NULL);
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command_line_id = g_signal_connect (app, "command-line", G_CALLBACK (dbus_command_line_cb), &n_command_lines);
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startup_id = g_signal_connect (app, "startup", G_CALLBACK (dbus_startup_cb), messages->pdata[i]);
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g_application_hold (app);
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g_application_run (app, 0, NULL);
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/* It’s called once for handling the local command line on startup, and again
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* for the D-Bus call */
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||||||
|
g_assert_cmpuint (n_command_lines, ==, 2);
|
||||||
|
|
||||||
|
g_signal_handler_disconnect (app, startup_id);
|
||||||
|
g_signal_handler_disconnect (app, command_line_id);
|
||||||
|
g_signal_handler_disconnect (app, activate_id);
|
||||||
|
g_clear_object (&app);
|
||||||
|
}
|
||||||
|
|
||||||
|
g_ptr_array_unref (messages);
|
||||||
|
|
||||||
|
g_test_dbus_down (bus);
|
||||||
|
g_clear_object (&bus);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
dbus_activate_action_cb (GSimpleAction *action,
|
||||||
|
GVariant *parameter,
|
||||||
|
gpointer user_data)
|
||||||
|
{
|
||||||
|
guint *n_activations = user_data;
|
||||||
|
|
||||||
|
*n_activations = *n_activations + 1;
|
||||||
|
g_main_context_wakeup (NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
test_dbus_activate_action (void)
|
||||||
|
{
|
||||||
|
GTestDBus *bus = NULL;
|
||||||
|
GVariantBuilder builder;
|
||||||
|
struct
|
||||||
|
{
|
||||||
|
GDBusMessage *message; /* (not nullable) (owned) */
|
||||||
|
guint n_expected_activations;
|
||||||
|
} messages[6];
|
||||||
|
gsize i;
|
||||||
|
|
||||||
|
g_test_summary ("Test that calling the ActivateAction D-Bus method works");
|
||||||
|
|
||||||
|
/* Action without parameter */
|
||||||
|
messages[0].message = g_dbus_message_new_method_call ("org.gtk.TestApplication.ActivateAction",
|
||||||
|
"/org/gtk/TestApplication/ActivateAction",
|
||||||
|
"org.freedesktop.Application",
|
||||||
|
"ActivateAction");
|
||||||
|
g_dbus_message_set_body (messages[0].message, g_variant_new ("(sava{sv})", "undo", NULL, NULL));
|
||||||
|
messages[0].n_expected_activations = 1;
|
||||||
|
|
||||||
|
/* Action with parameter */
|
||||||
|
g_variant_builder_init (&builder, G_VARIANT_TYPE ("av"));
|
||||||
|
g_variant_builder_add (&builder, "v", g_variant_new_string ("spanish"));
|
||||||
|
|
||||||
|
messages[1].message = g_dbus_message_new_method_call ("org.gtk.TestApplication.ActivateAction",
|
||||||
|
"/org/gtk/TestApplication/ActivateAction",
|
||||||
|
"org.freedesktop.Application",
|
||||||
|
"ActivateAction");
|
||||||
|
g_dbus_message_set_body (messages[1].message, g_variant_new ("(sava{sv})", "lang", &builder, NULL));
|
||||||
|
messages[1].n_expected_activations = 1;
|
||||||
|
|
||||||
|
/* Action with unexpected parameter */
|
||||||
|
g_variant_builder_init (&builder, G_VARIANT_TYPE ("av"));
|
||||||
|
g_variant_builder_add (&builder, "v", g_variant_new_string ("should not be passed"));
|
||||||
|
|
||||||
|
messages[2].message = g_dbus_message_new_method_call ("org.gtk.TestApplication.ActivateAction",
|
||||||
|
"/org/gtk/TestApplication/ActivateAction",
|
||||||
|
"org.freedesktop.Application",
|
||||||
|
"ActivateAction");
|
||||||
|
g_dbus_message_set_body (messages[2].message, g_variant_new ("(sava{sv})", "undo", &builder, NULL));
|
||||||
|
messages[2].n_expected_activations = 0;
|
||||||
|
|
||||||
|
/* Action without required parameter */
|
||||||
|
messages[3].message = g_dbus_message_new_method_call ("org.gtk.TestApplication.ActivateAction",
|
||||||
|
"/org/gtk/TestApplication/ActivateAction",
|
||||||
|
"org.freedesktop.Application",
|
||||||
|
"ActivateAction");
|
||||||
|
g_dbus_message_set_body (messages[3].message, g_variant_new ("(sava{sv})", "lang", NULL, NULL));
|
||||||
|
messages[3].n_expected_activations = 0;
|
||||||
|
|
||||||
|
/* Action with wrong parameter type */
|
||||||
|
g_variant_builder_init (&builder, G_VARIANT_TYPE ("av"));
|
||||||
|
g_variant_builder_add (&builder, "v", g_variant_new_uint32 (42));
|
||||||
|
|
||||||
|
messages[4].message = g_dbus_message_new_method_call ("org.gtk.TestApplication.ActivateAction",
|
||||||
|
"/org/gtk/TestApplication/ActivateAction",
|
||||||
|
"org.freedesktop.Application",
|
||||||
|
"ActivateAction");
|
||||||
|
g_dbus_message_set_body (messages[4].message, g_variant_new ("(sava{sv})", "lang", &builder, NULL));
|
||||||
|
messages[4].n_expected_activations = 0;
|
||||||
|
|
||||||
|
/* Nonexistent action */
|
||||||
|
messages[5].message = g_dbus_message_new_method_call ("org.gtk.TestApplication.ActivateAction",
|
||||||
|
"/org/gtk/TestApplication/ActivateAction",
|
||||||
|
"org.freedesktop.Application",
|
||||||
|
"ActivateAction");
|
||||||
|
g_dbus_message_set_body (messages[5].message, g_variant_new ("(sava{sv})", "nonexistent", NULL, NULL));
|
||||||
|
messages[5].n_expected_activations = 0;
|
||||||
|
|
||||||
|
/* Try each message */
|
||||||
|
bus = g_test_dbus_new (G_TEST_DBUS_NONE);
|
||||||
|
g_test_dbus_up (bus);
|
||||||
|
|
||||||
|
for (i = 0; i < G_N_ELEMENTS (messages); i++)
|
||||||
|
{
|
||||||
|
GApplication *app = NULL;
|
||||||
|
gulong activate_id, startup_id;
|
||||||
|
const GActionEntry entries[] =
|
||||||
|
{
|
||||||
|
{ "undo", dbus_activate_action_cb, NULL, NULL, NULL, { 0 } },
|
||||||
|
{ "lang", dbus_activate_action_cb, "s", "'latin'", NULL, { 0 } },
|
||||||
|
};
|
||||||
|
guint n_activations = 0;
|
||||||
|
|
||||||
|
g_test_message ("Message %" G_GSIZE_FORMAT, i);
|
||||||
|
|
||||||
|
app = g_application_new ("org.gtk.TestApplication.ActivateAction", G_APPLICATION_DEFAULT_FLAGS);
|
||||||
|
activate_id = g_signal_connect (app, "activate", G_CALLBACK (dbus_activate_noop_cb), NULL);
|
||||||
|
startup_id = g_signal_connect (app, "startup", G_CALLBACK (dbus_startup_cb), messages[i].message);
|
||||||
|
|
||||||
|
/* Export some actions. */
|
||||||
|
g_action_map_add_action_entries (G_ACTION_MAP (app), entries, G_N_ELEMENTS (entries), &n_activations);
|
||||||
|
|
||||||
|
g_application_hold (app);
|
||||||
|
g_application_run (app, 0, NULL);
|
||||||
|
|
||||||
|
g_assert_cmpuint (n_activations, ==, messages[i].n_expected_activations);
|
||||||
|
|
||||||
|
g_signal_handler_disconnect (app, startup_id);
|
||||||
|
g_signal_handler_disconnect (app, activate_id);
|
||||||
|
g_clear_object (&app);
|
||||||
|
g_clear_object (&messages[i].message);
|
||||||
|
}
|
||||||
|
|
||||||
|
g_test_dbus_down (bus);
|
||||||
|
g_clear_object (&bus);
|
||||||
|
}
|
||||||
|
|
||||||
int
|
int
|
||||||
main (int argc, char **argv)
|
main (int argc, char **argv)
|
||||||
{
|
{
|
||||||
@ -1225,6 +1660,10 @@ main (int argc, char **argv)
|
|||||||
g_test_add_func ("/gapplication/api", test_api);
|
g_test_add_func ("/gapplication/api", test_api);
|
||||||
g_test_add_data_func ("/gapplication/replace", GINT_TO_POINTER (TRUE), test_replace);
|
g_test_add_data_func ("/gapplication/replace", GINT_TO_POINTER (TRUE), test_replace);
|
||||||
g_test_add_data_func ("/gapplication/no-replace", GINT_TO_POINTER (FALSE), test_replace);
|
g_test_add_data_func ("/gapplication/no-replace", GINT_TO_POINTER (FALSE), test_replace);
|
||||||
|
g_test_add_func ("/gapplication/dbus/activate", test_dbus_activate);
|
||||||
|
g_test_add_func ("/gapplication/dbus/open", test_dbus_open);
|
||||||
|
g_test_add_func ("/gapplication/dbus/command-line", test_dbus_command_line);
|
||||||
|
g_test_add_func ("/gapplication/dbus/activate-action", test_dbus_activate_action);
|
||||||
|
|
||||||
return g_test_run ();
|
return g_test_run ();
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user