/* GLib testing framework examples and tests * * Copyright (C) 2008-2010 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General * Public License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * Author: David Zeuthen */ #include #include #include /* for open(2) */ #include #include #include #include #include #include "gdbus-tests.h" #ifdef G_OS_UNIX static gboolean is_unix = TRUE; #else static gboolean is_unix = FALSE; #endif static gchar *test_guid = NULL; static GMainLoop *service_loop = NULL; static GDBusServer *server = NULL; static GMainLoop *loop = NULL; /* ---------------------------------------------------------------------------------------------------- */ /* Test that peer-to-peer connections work */ /* ---------------------------------------------------------------------------------------------------- */ typedef struct { gboolean accept_connection; gint num_connection_attempts; GPtrArray *current_connections; guint num_method_calls; gboolean signal_received; } PeerData; static const gchar *test_interface_introspection_xml = "" " " " " " " " " " " " " " " " " " " " " " " " " " " " " ""; static const GDBusInterfaceInfo *test_interface_introspection_data = NULL; static void test_interface_method_call (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *interface_name, const gchar *method_name, GVariant *parameters, GDBusMethodInvocation *invocation, gpointer user_data) { PeerData *data = user_data; data->num_method_calls++; g_assert_cmpstr (object_path, ==, "/org/gtk/GDBus/PeerTestObject"); g_assert_cmpstr (interface_name, ==, "org.gtk.GDBus.PeerTestInterface"); if (g_strcmp0 (method_name, "HelloPeer") == 0) { const gchar *greeting; gchar *response; g_variant_get (parameters, "(&s)", &greeting); response = g_strdup_printf ("You greeted me with '%s'.", greeting); g_dbus_method_invocation_return_value (invocation, g_variant_new ("(s)", response)); g_free (response); } else if (g_strcmp0 (method_name, "EmitSignal") == 0) { GError *error; error = NULL; g_dbus_connection_emit_signal (connection, NULL, "/org/gtk/GDBus/PeerTestObject", "org.gtk.GDBus.PeerTestInterface", "PeerSignal", NULL, &error); g_assert_no_error (error); g_dbus_method_invocation_return_value (invocation, NULL); } else if (g_strcmp0 (method_name, "OpenFile") == 0) { #ifdef G_OS_UNIX const gchar *path; GDBusMessage *reply; GError *error; gint fd; GUnixFDList *fd_list; g_variant_get (parameters, "(&s)", &path); fd_list = g_unix_fd_list_new (); error = NULL; fd = open (path, O_RDONLY); g_unix_fd_list_append (fd_list, fd, &error); g_assert_no_error (error); close (fd); reply = g_dbus_message_new_method_reply (g_dbus_method_invocation_get_message (invocation)); g_dbus_message_set_unix_fd_list (reply, fd_list); g_object_unref (invocation); error = NULL; g_dbus_connection_send_message (connection, reply, NULL, /* out_serial */ &error); g_assert_no_error (error); g_object_unref (reply); #else g_dbus_method_invocation_return_dbus_error (invocation, "org.gtk.GDBus.NotOnUnix", "Your OS does not support file descriptor passing"); #endif } else { g_assert_not_reached (); } } static GVariant * test_interface_get_property (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *interface_name, const gchar *property_name, GError **error, gpointer user_data) { g_assert_cmpstr (object_path, ==, "/org/gtk/GDBus/PeerTestObject"); g_assert_cmpstr (interface_name, ==, "org.gtk.GDBus.PeerTestInterface"); g_assert_cmpstr (property_name, ==, "PeerProperty"); return g_variant_new_string ("ThePropertyValue"); } static const GDBusInterfaceVTable test_interface_vtable = { test_interface_method_call, test_interface_get_property, NULL /* set_property */ }; static void on_proxy_signal_received (GDBusProxy *proxy, gchar *sender_name, gchar *signal_name, GVariant *parameters, gpointer user_data) { PeerData *data = user_data; data->signal_received = TRUE; g_assert (sender_name == NULL); g_assert_cmpstr (signal_name, ==, "PeerSignal"); g_main_loop_quit (loop); } /* ---------------------------------------------------------------------------------------------------- */ static gboolean on_authorize_authenticated_peer (GDBusAuthObserver *observer, GIOStream *stream, GCredentials *credentials, gpointer user_data) { PeerData *data = user_data; gboolean authorized; data->num_connection_attempts++; authorized = TRUE; if (!data->accept_connection) { authorized = FALSE; g_main_loop_quit (loop); } return authorized; } /* Runs in thread we created GDBusServer in (since we didn't pass G_DBUS_SERVER_FLAGS_RUN_IN_THREAD) */ static void on_new_connection (GDBusServer *server, GDBusConnection *connection, gpointer user_data) { PeerData *data = user_data; GError *error; guint reg_id; //g_print ("Client connected.\n" // "Negotiated capabilities: unix-fd-passing=%d\n", // g_dbus_connection_get_capabilities (connection) & G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING); g_ptr_array_add (data->current_connections, g_object_ref (connection)); /* export object on the newly established connection */ error = NULL; reg_id = g_dbus_connection_register_object (connection, "/org/gtk/GDBus/PeerTestObject", test_interface_introspection_data, &test_interface_vtable, data, NULL, /* GDestroyNotify for data */ &error); g_assert_no_error (error); g_assert (reg_id > 0); g_main_loop_quit (loop); } static gpointer service_thread_func (gpointer user_data) { PeerData *data = user_data; GMainContext *service_context; GDBusAuthObserver *observer; GError *error; service_context = g_main_context_new (); g_main_context_push_thread_default (service_context); error = NULL; observer = g_dbus_auth_observer_new (); server = g_dbus_server_new_sync (is_unix ? "unix:tmpdir=/tmp/gdbus-test-" : "nonce-tcp:", G_DBUS_SERVER_FLAGS_NONE, test_guid, observer, NULL, /* cancellable */ &error); g_assert_no_error (error); g_signal_connect (server, "new-connection", G_CALLBACK (on_new_connection), data); g_signal_connect (observer, "authorize-authenticated-peer", G_CALLBACK (on_authorize_authenticated_peer), data); g_object_unref (observer); g_dbus_server_start (server); service_loop = g_main_loop_new (service_context, FALSE); g_main_loop_run (service_loop); g_main_context_pop_thread_default (service_context); g_main_loop_unref (service_loop); g_main_context_unref (service_context); /* test code specifically unrefs the server - see below */ g_assert (server == NULL); return NULL; } #if 0 static gboolean on_incoming_connection (GSocketService *service, GSocketConnection *socket_connection, GObject *source_object, gpointer user_data) { PeerData *data = user_data; if (data->accept_connection) { GError *error; guint reg_id; GDBusConnection *connection; error = NULL; connection = g_dbus_connection_new_sync (G_IO_STREAM (socket_connection), test_guid, G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER, NULL, /* cancellable */ &error); g_assert_no_error (error); g_ptr_array_add (data->current_connections, connection); /* export object on the newly established connection */ error = NULL; reg_id = g_dbus_connection_register_object (connection, "/org/gtk/GDBus/PeerTestObject", &test_interface_introspection_data, &test_interface_vtable, data, NULL, /* GDestroyNotify for data */ &error); g_assert_no_error (error); g_assert (reg_id > 0); } else { /* don't do anything */ } data->num_connection_attempts++; g_main_loop_quit (loop); /* stops other signal handlers from being invoked */ return TRUE; } static gpointer service_thread_func (gpointer data) { GMainContext *service_context; gchar *socket_path; GSocketAddress *address; GError *error; service_context = g_main_context_new (); g_main_context_push_thread_default (service_context); socket_path = g_strdup_printf ("/tmp/gdbus-test-pid-%d", getpid ()); address = g_unix_socket_address_new (socket_path); service = g_socket_service_new (); error = NULL; g_socket_listener_add_address (G_SOCKET_LISTENER (service), address, G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_DEFAULT, NULL, /* source_object */ NULL, /* effective_address */ &error); g_assert_no_error (error); g_signal_connect (service, "incoming", G_CALLBACK (on_incoming_connection), data); g_socket_service_start (service); service_loop = g_main_loop_new (service_context, FALSE); g_main_loop_run (service_loop); g_main_context_pop_thread_default (service_context); g_main_loop_unref (service_loop); g_main_context_unref (service_context); g_object_unref (address); g_free (socket_path); return NULL; } #endif /* ---------------------------------------------------------------------------------------------------- */ #if 0 static gboolean check_connection (gpointer user_data) { PeerData *data = user_data; guint n; for (n = 0; n < data->current_connections->len; n++) { GDBusConnection *c; GIOStream *stream; c = G_DBUS_CONNECTION (data->current_connections->pdata[n]); stream = g_dbus_connection_get_stream (c); g_debug ("In check_connection for %d: connection %p, stream %p", n, c, stream); g_debug ("closed = %d", g_io_stream_is_closed (stream)); GSocket *socket; socket = g_socket_connection_get_socket (G_SOCKET_CONNECTION (stream)); g_debug ("socket_closed = %d", g_socket_is_closed (socket)); g_debug ("socket_condition_check = %d", g_socket_condition_check (socket, G_IO_IN|G_IO_OUT|G_IO_ERR|G_IO_HUP)); gchar buf[128]; GError *error; gssize num_read; error = NULL; num_read = g_input_stream_read (g_io_stream_get_input_stream (stream), buf, 128, NULL, &error); if (num_read < 0) { g_debug ("error: %s", error->message); g_error_free (error); } else { g_debug ("no error, read %d bytes", (gint) num_read); } } return FALSE; } static gboolean on_do_disconnect_in_idle (gpointer data) { GDBusConnection *c = G_DBUS_CONNECTION (data); g_debug ("GDC %p has ref_count %d", c, G_OBJECT (c)->ref_count); g_dbus_connection_disconnect (c); g_object_unref (c); return FALSE; } #endif static void test_peer (void) { GDBusConnection *c; GDBusConnection *c2; GDBusProxy *proxy; GError *error; PeerData data; GVariant *value; GVariant *result; const gchar *s; GThread *service_thread; memset (&data, '\0', sizeof (PeerData)); data.current_connections = g_ptr_array_new_with_free_func (g_object_unref); /* first try to connect when there is no server */ error = NULL; c = g_dbus_connection_new_for_address_sync (is_unix ? "unix:path=/tmp/gdbus-test-does-not-exist-pid" : /* NOTE: Even if something is listening on port 12345 the connection * will fail because the nonce file doesn't exist */ "nonce-tcp:host=localhost,port=12345,noncefile=this-does-not-exist-gdbus", G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT, NULL, /* GDBusAuthObserver */ NULL, /* cancellable */ &error); _g_assert_error_domain (error, G_IO_ERROR); g_assert (!g_dbus_error_is_remote_error (error)); g_clear_error (&error); g_assert (c == NULL); /* bring up a server - we run the server in a different thread to avoid deadlocks */ error = NULL; service_thread = g_thread_create (service_thread_func, &data, TRUE, &error); while (service_loop == NULL) g_thread_yield (); g_assert (server != NULL); /* bring up a connection and accept it */ data.accept_connection = TRUE; error = NULL; c = g_dbus_connection_new_for_address_sync (g_dbus_server_get_client_address (server), G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT, NULL, /* GDBusAuthObserver */ NULL, /* cancellable */ &error); g_assert_no_error (error); g_assert (c != NULL); while (data.current_connections->len < 1) g_main_loop_run (loop); g_assert_cmpint (data.current_connections->len, ==, 1); g_assert_cmpint (data.num_connection_attempts, ==, 1); g_assert (g_dbus_connection_get_unique_name (c) == NULL); g_assert_cmpstr (g_dbus_connection_get_guid (c), ==, test_guid); /* check that we create a proxy, read properties, receive signals and invoke * the HelloPeer() method. Since the server runs in another thread it's fine * to use synchronous blocking API here. */ error = NULL; proxy = g_dbus_proxy_new_sync (c, G_DBUS_PROXY_FLAGS_NONE, NULL, NULL, /* bus_name */ "/org/gtk/GDBus/PeerTestObject", "org.gtk.GDBus.PeerTestInterface", NULL, /* GCancellable */ &error); g_assert_no_error (error); g_assert (proxy != NULL); error = NULL; value = g_dbus_proxy_get_cached_property (proxy, "PeerProperty"); g_assert_cmpstr (g_variant_get_string (value, NULL), ==, "ThePropertyValue"); /* try invoking a method */ error = NULL; result = g_dbus_proxy_call_sync (proxy, "HelloPeer", g_variant_new ("(s)", "Hey Peer!"), G_DBUS_CALL_FLAGS_NONE, -1, NULL, /* GCancellable */ &error); g_assert_no_error (error); g_variant_get (result, "(&s)", &s); g_assert_cmpstr (s, ==, "You greeted me with 'Hey Peer!'."); g_variant_unref (result); g_assert_cmpint (data.num_method_calls, ==, 1); /* make the other peer emit a signal - catch it */ g_signal_connect (proxy, "g-signal", G_CALLBACK (on_proxy_signal_received), &data); g_assert (!data.signal_received); g_dbus_proxy_call (proxy, "EmitSignal", NULL, /* no arguments */ G_DBUS_CALL_FLAGS_NONE, -1, NULL, /* GCancellable */ NULL, /* GAsyncReadyCallback - we don't care about the result */ NULL); /* user_data */ g_main_loop_run (loop); g_assert (data.signal_received); g_assert_cmpint (data.num_method_calls, ==, 2); /* check for UNIX fd passing */ #ifdef G_OS_UNIX { GDBusMessage *method_call_message; GDBusMessage *method_reply_message; GUnixFDList *fd_list; gint fd; gchar buf[1024]; gssize len; gchar *buf2; gsize len2; method_call_message = g_dbus_message_new_method_call (NULL, /* name */ "/org/gtk/GDBus/PeerTestObject", "org.gtk.GDBus.PeerTestInterface", "OpenFile"); g_dbus_message_set_body (method_call_message, g_variant_new ("(s)", "/etc/hosts")); error = NULL; method_reply_message = g_dbus_connection_send_message_with_reply_sync (c, method_call_message, -1, NULL, /* out_serial */ NULL, /* cancellable */ &error); g_assert_no_error (error); g_assert (g_dbus_message_get_message_type (method_reply_message) == G_DBUS_MESSAGE_TYPE_METHOD_RETURN); fd_list = g_dbus_message_get_unix_fd_list (method_reply_message); g_assert (fd_list != NULL); g_assert_cmpint (g_unix_fd_list_get_length (fd_list), ==, 1); error = NULL; fd = g_unix_fd_list_get (fd_list, 0, &error); g_assert_no_error (error); g_object_unref (method_call_message); g_object_unref (method_reply_message); memset (buf, '\0', sizeof (buf)); len = read (fd, buf, sizeof (buf) - 1); close (fd); error = NULL; g_file_get_contents ("/etc/hosts", &buf2, &len2, &error); g_assert_no_error (error); if (len2 > sizeof (buf)) buf2[sizeof (buf)] = '\0'; g_assert_cmpstr (buf, ==, buf2); g_free (buf2); } #else error = NULL; result = g_dbus_proxy_call_sync (proxy, "OpenFile", g_variant_new ("(s)", "boo"), G_DBUS_CALL_FLAGS_NONE, -1, NULL, /* GCancellable */ &error); g_assert_error (error, G_IO_ERROR, G_IO_ERROR_DBUS_ERROR); g_assert (result == NULL); g_error_free (error); #endif /* G_OS_UNIX */ /* bring up a connection - don't accept it - this should fail */ data.accept_connection = FALSE; error = NULL; c2 = g_dbus_connection_new_for_address_sync (g_dbus_server_get_client_address (server), G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT, NULL, /* GDBusAuthObserver */ NULL, /* cancellable */ &error); _g_assert_error_domain (error, G_IO_ERROR); g_assert (c2 == NULL); #if 0 /* TODO: THIS TEST DOESN'T WORK YET */ /* bring up a connection - accept it.. then disconnect from the client side - check * that the server side gets the disconnect signal. */ error = NULL; data.accept_connection = TRUE; c2 = g_dbus_connection_new_for_address_sync (g_dbus_server_get_client_address (server), G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT, NULL, /* GDBusAuthObserver */ NULL, /* cancellable */ &error); g_assert_no_error (error); g_assert (c2 != NULL); g_assert (!g_dbus_connection_get_is_disconnected (c2)); while (data.num_connection_attempts < 3) g_main_loop_run (loop); g_assert_cmpint (data.current_connections->len, ==, 2); g_assert_cmpint (data.num_connection_attempts, ==, 3); g_assert (!g_dbus_connection_get_is_disconnected (G_DBUS_CONNECTION (data.current_connections->pdata[1]))); g_idle_add (on_do_disconnect_in_idle, c2); g_debug ("=================================================="); g_debug ("=================================================="); g_debug ("=================================================="); g_debug ("waiting for disconnect on connection %p, stream %p", data.current_connections->pdata[1], g_dbus_connection_get_stream (data.current_connections->pdata[1])); g_timeout_add (2000, check_connection, &data); //_g_assert_signal_received (G_DBUS_CONNECTION (data.current_connections->pdata[1]), "closed"); g_main_loop_run (loop); g_assert (g_dbus_connection_get_is_disconnected (G_DBUS_CONNECTION (data.current_connections->pdata[1]))); g_ptr_array_set_size (data.current_connections, 1); /* remove disconnected connection object */ #endif /* unref the server and stop listening for new connections * * This won't bring down the established connections - check that c is still connected * by invoking a method */ //g_socket_service_stop (service); //g_object_unref (service); g_dbus_server_stop (server); g_object_unref (server); server = NULL; error = NULL; result = g_dbus_proxy_call_sync (proxy, "HelloPeer", g_variant_new ("(s)", "Hey Again Peer!"), G_DBUS_CALL_FLAGS_NONE, -1, NULL, /* GCancellable */ &error); g_assert_no_error (error); g_variant_get (result, "(&s)", &s); g_assert_cmpstr (s, ==, "You greeted me with 'Hey Again Peer!'."); g_variant_unref (result); g_assert_cmpint (data.num_method_calls, ==, 4); #if 0 /* TODO: THIS TEST DOESN'T WORK YET */ /* now disconnect from the server side - check that the client side gets the signal */ g_assert_cmpint (data.current_connections->len, ==, 1); g_assert (G_DBUS_CONNECTION (data.current_connections->pdata[0]) != c); g_dbus_connection_disconnect (G_DBUS_CONNECTION (data.current_connections->pdata[0])); if (!g_dbus_connection_get_is_disconnected (c)) _g_assert_signal_received (c, "closed"); g_assert (g_dbus_connection_get_is_disconnected (c)); #endif g_object_unref (c); g_ptr_array_unref (data.current_connections); g_object_unref (proxy); g_main_loop_quit (service_loop); g_thread_join (service_thread); } /* ---------------------------------------------------------------------------------------------------- */ typedef struct { GDBusServer *server; GMainContext *context; GMainLoop *loop; GList *connections; } DmpData; static void dmp_data_free (DmpData *data) { g_main_loop_unref (data->loop); g_main_context_unref (data->context); g_object_unref (data->server); g_list_foreach (data->connections, (GFunc) g_object_unref, NULL); g_list_free (data->connections); g_free (data); } static void dmp_on_method_call (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *interface_name, const gchar *method_name, GVariant *parameters, GDBusMethodInvocation *invocation, gpointer user_data) { //DmpData *data = user_data; gint32 first; gint32 second; g_variant_get (parameters, "(ii)", &first, &second); g_dbus_method_invocation_return_value (invocation, g_variant_new ("(i)", first + second)); } static const GDBusInterfaceVTable dmp_interface_vtable = { dmp_on_method_call, NULL, /* get_property */ NULL /* set_property */ }; /* Runs in thread we created GDBusServer in (since we didn't pass G_DBUS_SERVER_FLAGS_RUN_IN_THREAD) */ static void dmp_on_new_connection (GDBusServer *server, GDBusConnection *connection, gpointer user_data) { DmpData *data = user_data; GDBusNodeInfo *node; GError *error; /* accept the connection */ data->connections = g_list_prepend (data->connections, g_object_ref (connection)); error = NULL; node = g_dbus_node_info_new_for_xml ("" " " " " " " " " " " " " " " "", &error); g_assert_no_error (error); /* sleep 100ms before exporting an object - this is to test that * G_DBUS_CONNECTION_FLAGS_DELAY_MESSAGE_PROCESSING really works * (GDBusServer uses this feature). */ usleep (100 * 1000); /* export an object */ error = NULL; g_dbus_connection_register_object (connection, "/dmp/test", node->interfaces[0], &dmp_interface_vtable, data, NULL, &error); g_dbus_node_info_unref (node); } static gpointer dmp_thread_func (gpointer user_data) { DmpData *data = user_data; GError *error; gchar *guid; data->context = g_main_context_new (); g_main_context_push_thread_default (data->context); error = NULL; guid = g_dbus_generate_guid (); data->server = g_dbus_server_new_sync ("unix:tmpdir=/tmp/gdbus-test-", G_DBUS_SERVER_FLAGS_NONE, guid, NULL, /* GDBusAuthObserver */ NULL, /* GCancellable */ &error); g_assert_no_error (error); g_signal_connect (data->server, "new-connection", G_CALLBACK (dmp_on_new_connection), data); g_dbus_server_start (data->server); data->loop = g_main_loop_new (data->context, FALSE); g_main_loop_run (data->loop); g_main_context_pop_thread_default (data->context); g_free (guid); return NULL; } static void delayed_message_processing (void) { GError *error; DmpData *data; GThread *service_thread; guint n; data = g_new0 (DmpData, 1); error = NULL; service_thread = g_thread_create (dmp_thread_func, data, TRUE, &error); while (data->server == NULL || !g_dbus_server_is_active (data->server)) g_thread_yield (); for (n = 0; n < 5; n++) { GDBusConnection *c; GVariant *res; gint32 val; error = NULL; c = g_dbus_connection_new_for_address_sync (g_dbus_server_get_client_address (data->server), G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT, NULL, /* GDBusAuthObserver */ NULL, /* GCancellable */ &error); g_assert_no_error (error); error = NULL; res = g_dbus_connection_call_sync (c, NULL, /* bus name */ "/dmp/test", "org.gtk.GDBus.DmpInterface", "AddPair", g_variant_new ("(ii)", 2, n), G_VARIANT_TYPE ("(i)"), G_DBUS_CALL_FLAGS_NONE, -1, /* timeout_msec */ NULL, /* GCancellable */ &error); g_assert_no_error (error); g_variant_get (res, "(i)", &val); g_assert_cmpint (val, ==, 2 + n); g_variant_unref (res); g_object_unref (c); } g_main_loop_quit (data->loop); g_thread_join (service_thread); dmp_data_free (data); } /* ---------------------------------------------------------------------------------------------------- */ int main (int argc, char *argv[]) { gint ret; GDBusNodeInfo *introspection_data = NULL; g_type_init (); g_thread_init (NULL); g_test_init (&argc, &argv, NULL); introspection_data = g_dbus_node_info_new_for_xml (test_interface_introspection_xml, NULL); g_assert (introspection_data != NULL); test_interface_introspection_data = introspection_data->interfaces[0]; test_guid = g_dbus_generate_guid (); /* all the tests rely on a shared main loop */ loop = g_main_loop_new (NULL, FALSE); g_test_add_func ("/gdbus/peer-to-peer", test_peer); g_test_add_func ("/gdbus/delayed-message-processing", delayed_message_processing); ret = g_test_run(); g_main_loop_unref (loop); g_free (test_guid); g_dbus_node_info_unref (introspection_data); return ret; }