libnm-core, core: register NMConnectionError with D-Bus

Register NMConnectionError with D-Bus on both sides, so that, eg,
connection validation failures in the daemon will translate to the
correct error codes in the client.

libnm-core/nm-core-internal.h

@@ -81,4 +81,6 @@ GPtrArray *_nm_utils_copy_array (const GPtrArray *array,
                                  GDestroyNotify free_func);
 GPtrArray *_nm_utils_copy_object_array (const GPtrArray *array);
 
+void _nm_dbus_errors_init (void);
+
 #endif

libnm-core/nm-errors.c

@@ -18,10 +18,43 @@
  * Copyright 2004 - 2014 Red Hat, Inc.
  */
 
-#include <glib.h>
+#include <string.h>
+#include <gio/gio.h>
 
 #include "nm-errors.h"
 #include "nm-glib-compat.h"
+#include "nm-dbus-interface.h"
+#include "nm-core-internal.h"
 
 G_DEFINE_QUARK (nm-connection-error-quark, nm_connection_error)
 G_DEFINE_QUARK (nm-crypto-error-quark, nm_crypto_error)
+
+static void
+register_error_domain (GQuark domain,
+                       const char *interface,
+                       GType enum_type)
+{
+	GEnumClass *enum_class;
+	GEnumValue *e;
+	char *error_name;
+	int i;
+
+	enum_class = g_type_class_ref (enum_type);
+	for (i = 0; i < enum_class->n_values; i++) {
+		e = &enum_class->values[i];
+		g_assert (strchr (e->value_nick, '-') == NULL);
+		error_name = g_strdup_printf ("%s.%s", interface, e->value_nick);
+		g_dbus_error_register_error (domain, e->value, error_name);
+		g_free (error_name);
+	}
+
+	g_type_class_unref (enum_class);
+}
+
+void
+_nm_dbus_errors_init (void)
+{
+	register_error_domain (NM_CONNECTION_ERROR,
+	                       NM_DBUS_INTERFACE_SETTINGS_CONNECTION,
+	                       NM_TYPE_CONNECTION_ERROR);
+}

libnm-core/nm-errors.h

@@ -50,6 +50,11 @@
  *
  * Describes errors that may result from operations involving a #NMConnection
  * or its #NMSettings.
+ *
+ * These errors may be returned directly from #NMConnection and #NMSetting
+ * methods, or may be returned from D-Bus operations (eg on #NMClient or
+ * #NMDevice), where they correspond to errors in the
+ * "org.freedesktop.NetworkManager.Settings.Connection" namespace.
  */
 typedef enum {
 	NM_CONNECTION_ERROR_FAILED = 0,                   /*< nick=Failed >*/

libnm-core/nm-utils.c

@@ -233,6 +233,8 @@ nm_utils_init (GError **error)
 
 		if (!crypto_init (error))
 			return FALSE;
+
+		_nm_dbus_errors_init ();
 	}
 	return TRUE;
 }

libnm/tests/test-remote-settings-client.c

@@ -415,6 +415,49 @@ test_add_remove_connection (void)
 
 /*******************************************************************/
 
+static void
+add_bad_cb (GObject *s,
+            GAsyncResult *result,
+            gpointer user_data)
+{
+	gboolean *done = user_data;
+	GError *error = NULL;
+
+	remote = nm_client_add_connection_finish (client, result, &error);
+	g_assert_error (error, NM_CONNECTION_ERROR, NM_CONNECTION_ERROR_INVALID_PROPERTY);
+
+	*done = TRUE;
+}
+
+static void
+test_add_bad_connection (void)
+{
+	NMConnection *connection;
+	time_t start, now;
+	gboolean done = FALSE;
+
+	/* The test daemon doesn't support bond connections */
+	connection = nmtst_create_minimal_connection ("bad connection test", NULL, NM_SETTING_BOND_SETTING_NAME, NULL);
+
+	nm_client_add_connection_async (client,
+	                                connection,
+	                                TRUE,
+	                                NULL,
+	                                add_bad_cb,
+	                                &done);
+	g_object_unref (connection);
+
+	start = time (NULL);
+	do {
+		now = time (NULL);
+		g_main_context_iteration (NULL, FALSE);
+	} while ((done == FALSE) && (now - start < 5));
+	g_assert (done == TRUE);
+	g_assert (remote == NULL);
+}
+
+/*******************************************************************/
+
 int
 main (int argc, char **argv)
 {
@@ -446,6 +489,7 @@ main (int argc, char **argv)
 	g_test_add_func ("/client/make_visible", test_make_visible);
 	g_test_add_func ("/client/remove_connection", test_remove_connection);
 	g_test_add_func ("/client/add_remove_connection", test_add_remove_connection);
+	g_test_add_func ("/client/add_bad_connection", test_add_bad_connection);
 
 	ret = g_test_run ();
 

src/settings/nm-settings.c

@@ -1995,9 +1995,9 @@ nm_settings_class_init (NMSettingsClass *class)
 	dbus_g_error_domain_register (NM_SETTINGS_ERROR,
 	                              NM_DBUS_INTERFACE_SETTINGS,
 	                              NM_TYPE_SETTINGS_ERROR);
-
-	/* And register all the settings errors with D-Bus */
-	dbus_g_error_domain_register (NM_CONNECTION_ERROR, NULL, NM_TYPE_CONNECTION_ERROR);
+	dbus_g_error_domain_register (NM_CONNECTION_ERROR,
+	                              NM_DBUS_INTERFACE_SETTINGS_CONNECTION,
+	                              NM_TYPE_CONNECTION_ERROR);
 
 	dbus_g_object_type_install_info (NM_TYPE_SETTINGS, &dbus_glib_nm_settings_object_info);
 

tools/test-networkmanager-service.py

@@ -905,9 +905,31 @@ class NetworkManager(ExportedObj):
 ###################################################################
 IFACE_CONNECTION = 'org.freedesktop.NetworkManager.Settings.Connection'
 
+class InvalidPropertyException(dbus.DBusException):
+    _dbus_error_name = IFACE_CONNECTION + '.InvalidProperty'
+
+class MissingPropertyException(dbus.DBusException):
+    _dbus_error_name = IFACE_CONNECTION + '.MissingProperty'
+
+class InvalidSettingException(dbus.DBusException):
+    _dbus_error_name = IFACE_CONNECTION + '.InvalidSetting'
+
+class MissingSettingException(dbus.DBusException):
+    _dbus_error_name = IFACE_CONNECTION + '.MissingSetting'
+
 class Connection(dbus.service.Object):
     def __init__(self, bus, object_path, settings, remove_func):
         dbus.service.Object.__init__(self, bus, object_path)
+
+        if not settings.has_key('connection'):
+            raise MissingSettingException('connection: setting is required')
+        s_con = settings['connection']
+        if not s_con.has_key('type'):
+            raise MissingPropertyException('connection.type: property is required')
+        type = s_con['type']
+        if not type in ['802-3-ethernet', '802-11-wireless', 'vlan', 'wimax']:
+            raise InvalidPropertyException('connection.type: unsupported connection type')
+
         self.path = object_path
         self.settings = settings
         self.remove_func = remove_func