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glib/gio/tests/gdbus-connection.c
Michael Olbrich 19a6742fc2 gdbusconnection: don't cache G_IO_ERROR_CANCELLED errors 
It can cause failures for shared connection objects.

What can currently happen is this:
1. A user starts to asynchronously create a proxy object
2. A user starts to asynchronously create another proxy object

At this point, the asynchronous initialization for the two proxy objects
share the not yet initialized connection object.

3. While the shared connection objected is created, the user cancels the
   creation with the supplied cancellable from the fist proxy object.
4. initable_init caches the canceled error and marks the connection as
   initialized.
5. The initialization of the second proxy object fails with the same
   canceled error.

To avoid this, clear the error in this case and destroy any member
variables that may have been created before the creation was canceled.

This way, the initialization of the second proxy object will restart the
connection initialization and with probably succeed.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
2023-12-11 14:17:14 +00:00

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/* GLib testing framework examples and tests
*
* Copyright (C) 2008-2010 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 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, see <http://www.gnu.org/licenses/>.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
#include <gio/gio.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include "gdbus-tests.h"
/* all tests rely on a shared mainloop */
static GMainLoop *loop = NULL;
#if 0
G_GNUC_UNUSED static void
_log (const gchar *format, ...)
{
GTimeVal now;
time_t now_time;
struct tm *now_tm;
gchar time_buf[128];
gchar *str;
va_list var_args;
va_start (var_args, format);
str = g_strdup_vprintf (format, var_args);
va_end (var_args);
g_get_current_time (&now);
now_time = (time_t) now.tv_sec;
now_tm = localtime (&now_time);
strftime (time_buf, sizeof time_buf, "%H:%M:%S", now_tm);
g_printerr ("%s.%06d: %s\n",
time_buf, (gint) now.tv_usec / 1000,
str);
g_free (str);
}
#else
#define _log(...)
#endif
static gboolean
test_connection_quit_mainloop (gpointer user_data)
{
gboolean *quit_mainloop_fired = user_data; /* (atomic) */
_log ("quit_mainloop_fired");
g_atomic_int_set (quit_mainloop_fired, TRUE);
g_main_loop_quit (loop);
return G_SOURCE_CONTINUE;
}
/* ---------------------------------------------------------------------------------------------------- */
/* Connection life-cycle testing */
/* ---------------------------------------------------------------------------------------------------- */
static const GDBusInterfaceInfo boo_interface_info =
{
-1,
"org.example.Boo",
(GDBusMethodInfo **) NULL,
(GDBusSignalInfo **) NULL,
(GDBusPropertyInfo **) NULL,
NULL,
};
static const GDBusInterfaceVTable boo_vtable =
{
NULL, /* _method_call */
NULL, /* _get_property */
NULL, /* _set_property */
{ 0 }
};
/* Runs in a worker thread. */
static GDBusMessage *
some_filter_func (GDBusConnection *connection,
GDBusMessage *message,
gboolean incoming,
gpointer user_data)
{
return message;
}
static void
on_name_owner_changed (GDBusConnection *connection,
const gchar *sender_name,
const gchar *object_path,
const gchar *interface_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
}
static void
a_gdestroynotify_that_sets_a_gboolean_to_true_and_quits_loop (gpointer user_data)
{
gboolean *val = user_data; /* (atomic) */
g_atomic_int_set (val, TRUE);
_log ("destroynotify fired for %p", val);
g_main_loop_quit (loop);
}
static void
test_connection_bus_failure (void)
{
GDBusConnection *c;
GError *error = NULL;
/*
* Check for correct behavior when no bus is present
*
*/
c = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_nonnull (error);
g_assert_false (g_dbus_error_is_remote_error (error));
g_assert_null (c);
g_error_free (error);
}
static void
test_connection_life_cycle (void)
{
gboolean ret;
GDBusConnection *c;
GDBusConnection *c2;
GError *error;
gboolean on_signal_registration_freed_called; /* (atomic) */
gboolean on_filter_freed_called; /* (atomic) */
gboolean on_register_object_freed_called; /* (atomic) */
gboolean quit_mainloop_fired; /* (atomic) */
guint quit_mainloop_id;
guint registration_id;
error = NULL;
/*
* Check for correct behavior when a bus is present
*/
session_bus_up ();
/* case 1 */
error = NULL;
c = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (c);
g_assert_false (g_dbus_connection_is_closed (c));
/*
* Check that singleton handling work
*/
error = NULL;
c2 = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (c2);
g_assert_true (c == c2);
g_object_unref (c2);
/*
* Check that private connections work
*/
c2 = _g_bus_get_priv (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (c2);
g_assert_true (c != c2);
g_object_unref (c2);
c2 = _g_bus_get_priv (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (c2);
g_assert_false (g_dbus_connection_is_closed (c2));
ret = g_dbus_connection_close_sync (c2, NULL, &error);
g_assert_no_error (error);
g_assert_true (ret);
_g_assert_signal_received (c2, "closed");
g_assert_true (g_dbus_connection_is_closed (c2));
ret = g_dbus_connection_close_sync (c2, NULL, &error);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CLOSED);
g_error_free (error);
g_assert_false (ret);
g_object_unref (c2);
/*
* Check that the finalization code works
*
* (and that the GDestroyNotify for filters and objects and signal
* registrations are run as expected)
*/
error = NULL;
c2 = _g_bus_get_priv (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (c2);
/* signal registration */
g_atomic_int_set (&on_signal_registration_freed_called, FALSE);
g_dbus_connection_signal_subscribe (c2,
"org.freedesktop.DBus", /* bus name */
"org.freedesktop.DBus", /* interface */
"NameOwnerChanged", /* member */
"/org/freesktop/DBus", /* path */
NULL, /* arg0 */
G_DBUS_SIGNAL_FLAGS_NONE,
on_name_owner_changed,
(gpointer) &on_signal_registration_freed_called,
a_gdestroynotify_that_sets_a_gboolean_to_true_and_quits_loop);
/* filter func */
g_atomic_int_set (&on_filter_freed_called, FALSE);
g_dbus_connection_add_filter (c2,
some_filter_func,
(gpointer) &on_filter_freed_called,
a_gdestroynotify_that_sets_a_gboolean_to_true_and_quits_loop);
/* object registration */
g_atomic_int_set (&on_register_object_freed_called, FALSE);
error = NULL;
registration_id = g_dbus_connection_register_object (c2,
"/foo",
(GDBusInterfaceInfo *) &boo_interface_info,
&boo_vtable,
(gpointer) &on_register_object_freed_called,
a_gdestroynotify_that_sets_a_gboolean_to_true_and_quits_loop,
&error);
g_assert_no_error (error);
g_assert_cmpuint (registration_id, >, 0);
/* ok, finalize the connection and check that all the GDestroyNotify functions are invoked as expected */
g_object_unref (c2);
g_atomic_int_set (&quit_mainloop_fired, FALSE);
quit_mainloop_id = g_timeout_add (30000, test_connection_quit_mainloop, (gpointer) &quit_mainloop_fired);
_log ("destroynotifies for\n"
" register_object %p\n"
" filter %p\n"
" signal %p",
&on_register_object_freed_called,
&on_filter_freed_called,
&on_signal_registration_freed_called);
while (TRUE)
{
if (g_atomic_int_get (&on_signal_registration_freed_called) &&
g_atomic_int_get (&on_filter_freed_called) &&
g_atomic_int_get (&on_register_object_freed_called))
break;
if (g_atomic_int_get (&quit_mainloop_fired))
break;
_log ("entering loop");
g_main_loop_run (loop);
_log ("exiting loop");
}
g_source_remove (quit_mainloop_id);
g_assert_true (g_atomic_int_get (&on_signal_registration_freed_called));
g_assert_true (g_atomic_int_get (&on_filter_freed_called));
g_assert_true (g_atomic_int_get (&on_register_object_freed_called));
g_assert_false (g_atomic_int_get (&quit_mainloop_fired));
/*
* Check for correct behavior when the bus goes away
*
*/
g_assert_false (g_dbus_connection_is_closed (c));
g_dbus_connection_set_exit_on_close (c, FALSE);
session_bus_stop ();
_g_assert_signal_received (c, "closed");
g_assert_true (g_dbus_connection_is_closed (c));
g_object_unref (c);
session_bus_down ();
}
/* ---------------------------------------------------------------------------------------------------- */
/* Test that sending and receiving messages work as expected */
/* ---------------------------------------------------------------------------------------------------- */
static void
msg_cb_expect_error_disconnected (GDBusConnection *connection,
GAsyncResult *res,
gpointer user_data)
{
GError *error;
GVariant *result;
/* Make sure gdbusconnection isn't holding @connection's lock. (#747349) */
g_dbus_connection_get_last_serial (connection);
error = NULL;
result = g_dbus_connection_call_finish (connection,
res,
&error);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CLOSED);
g_assert_false (g_dbus_error_is_remote_error (error));
g_error_free (error);
g_assert_null (result);
g_main_loop_quit (loop);
}
static void
msg_cb_expect_error_unknown_method (GDBusConnection *connection,
GAsyncResult *res,
gpointer user_data)
{
GError *error;
GVariant *result;
/* Make sure gdbusconnection isn't holding @connection's lock. (#747349) */
g_dbus_connection_get_last_serial (connection);
error = NULL;
result = g_dbus_connection_call_finish (connection,
res,
&error);
g_assert_error (error, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD);
g_assert_true (g_dbus_error_is_remote_error (error));
g_error_free (error);
g_assert_null (result);
g_main_loop_quit (loop);
}
static void
msg_cb_expect_success (GDBusConnection *connection,
GAsyncResult *res,
gpointer user_data)
{
GError *error;
GVariant *result;
/* Make sure gdbusconnection isn't holding @connection's lock. (#747349) */
g_dbus_connection_get_last_serial (connection);
error = NULL;
result = g_dbus_connection_call_finish (connection,
res,
&error);
g_assert_no_error (error);
g_assert_nonnull (result);
g_variant_unref (result);
g_main_loop_quit (loop);
}
static void
msg_cb_expect_error_cancelled (GDBusConnection *connection,
GAsyncResult *res,
gpointer user_data)
{
GError *error;
GVariant *result;
/* Make sure gdbusconnection isn't holding @connection's lock. (#747349) */
g_dbus_connection_get_last_serial (connection);
error = NULL;
result = g_dbus_connection_call_finish (connection,
res,
&error);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CANCELLED);
g_assert_false (g_dbus_error_is_remote_error (error));
g_error_free (error);
g_assert_null (result);
g_main_loop_quit (loop);
}
static void
msg_cb_expect_error_cancelled_2 (GDBusConnection *connection,
GAsyncResult *res,
gpointer user_data)
{
GError *error;
GVariant *result;
/* Make sure gdbusconnection isn't holding @connection's lock. (#747349) */
g_dbus_connection_get_last_serial (connection);
error = NULL;
result = g_dbus_connection_call_finish (connection,
res,
&error);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CANCELLED);
g_assert_false (g_dbus_error_is_remote_error (error));
g_error_free (error);
g_assert_null (result);
g_main_loop_quit (loop);
}
/* ---------------------------------------------------------------------------------------------------- */
static void
test_connection_send (void)
{
GDBusConnection *c;
GCancellable *ca;
session_bus_up ();
/* First, get an unopened connection */
c = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
g_assert_nonnull (c);
g_assert_false (g_dbus_connection_is_closed (c));
/*
* Check that we never actually send a message if the GCancellable
* is already cancelled - i.e. we should get G_IO_ERROR_CANCELLED
* when the actual connection is not up.
*/
ca = g_cancellable_new ();
g_cancellable_cancel (ca);
g_dbus_connection_call (c,
"org.freedesktop.DBus", /* bus_name */
"/org/freedesktop/DBus", /* object path */
"org.freedesktop.DBus", /* interface name */
"GetId", /* method name */
NULL, NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
ca,
(GAsyncReadyCallback) msg_cb_expect_error_cancelled,
NULL);
g_main_loop_run (loop);
g_object_unref (ca);
/*
* Check that we get a reply to the GetId() method call.
*/
g_dbus_connection_call (c,
"org.freedesktop.DBus", /* bus_name */
"/org/freedesktop/DBus", /* object path */
"org.freedesktop.DBus", /* interface name */
"GetId", /* method name */
NULL, NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
(GAsyncReadyCallback) msg_cb_expect_success,
NULL);
g_main_loop_run (loop);
/*
* Check that we get an error reply to the NonExistantMethod() method call.
*/
g_dbus_connection_call (c,
"org.freedesktop.DBus", /* bus_name */
"/org/freedesktop/DBus", /* object path */
"org.freedesktop.DBus", /* interface name */
"NonExistantMethod", /* method name */
NULL, NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
(GAsyncReadyCallback) msg_cb_expect_error_unknown_method,
NULL);
g_main_loop_run (loop);
/*
* Check that cancellation works when the message is already in flight.
*/
ca = g_cancellable_new ();
g_dbus_connection_call (c,
"org.freedesktop.DBus", /* bus_name */
"/org/freedesktop/DBus", /* object path */
"org.freedesktop.DBus", /* interface name */
"GetId", /* method name */
NULL, NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
ca,
(GAsyncReadyCallback) msg_cb_expect_error_cancelled_2,
NULL);
g_cancellable_cancel (ca);
g_main_loop_run (loop);
g_object_unref (ca);
/*
* Check that we get an error when sending to a connection that is disconnected.
*/
g_dbus_connection_set_exit_on_close (c, FALSE);
session_bus_stop ();
_g_assert_signal_received (c, "closed");
g_assert_true (g_dbus_connection_is_closed (c));
g_dbus_connection_call (c,
"org.freedesktop.DBus", /* bus_name */
"/org/freedesktop/DBus", /* object path */
"org.freedesktop.DBus", /* interface name */
"GetId", /* method name */
NULL, NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
(GAsyncReadyCallback) msg_cb_expect_error_disconnected,
NULL);
g_main_loop_run (loop);
g_object_unref (c);
session_bus_down ();
}
/* ---------------------------------------------------------------------------------------------------- */
/* Connection signal tests */
/* ---------------------------------------------------------------------------------------------------- */
static void
test_connection_signal_handler (GDBusConnection *connection,
const gchar *sender_name,
const gchar *object_path,
const gchar *interface_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
gint *counter = user_data;
*counter += 1;
/*g_debug ("in test_connection_signal_handler (sender=%s path=%s interface=%s member=%s)",
sender_name,
object_path,
interface_name,
signal_name);*/
g_main_loop_quit (loop);
}
static void
test_connection_signals (void)
{
GDBusConnection *c1;
GDBusConnection *c2;
GDBusConnection *c3;
guint s1;
guint s1b;
guint s2;
guint s3;
gint count_s1;
gint count_s1b;
gint count_s2;
gint count_name_owner_changed;
GError *error;
gboolean ret;
GVariant *result;
gboolean quit_mainloop_fired;
guint quit_mainloop_id;
error = NULL;
/*
* Bring up first separate connections
*/
session_bus_up ();
/* if running with dbus-monitor, it claims the name :1.0 - so if we don't run with the monitor
* emulate this
*/
if (g_getenv ("G_DBUS_MONITOR") == NULL)
{
c1 = _g_bus_get_priv (G_BUS_TYPE_SESSION, NULL, NULL);
g_assert_nonnull (c1);
g_assert_false (g_dbus_connection_is_closed (c1));
g_object_unref (c1);
}
c1 = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
g_assert_nonnull (c1);
g_assert_false (g_dbus_connection_is_closed (c1));
g_assert_cmpstr (g_dbus_connection_get_unique_name (c1), ==, ":1.1");
/*
* Install two signal handlers for the first connection
*
* - Listen to the signal "Foo" from :1.2 (e.g. c2)
* - Listen to the signal "Foo" from anyone (e.g. both c2 and c3)
*
* and then count how many times this signal handler was invoked.
*/
s1 = g_dbus_connection_signal_subscribe (c1,
":1.2",
"org.gtk.GDBus.ExampleInterface",
"Foo",
"/org/gtk/GDBus/ExampleInterface",
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
test_connection_signal_handler,
&count_s1,
NULL);
s2 = g_dbus_connection_signal_subscribe (c1,
NULL, /* match any sender */
"org.gtk.GDBus.ExampleInterface",
"Foo",
"/org/gtk/GDBus/ExampleInterface",
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
test_connection_signal_handler,
&count_s2,
NULL);
s3 = g_dbus_connection_signal_subscribe (c1,
"org.freedesktop.DBus", /* sender */
"org.freedesktop.DBus", /* interface */
"NameOwnerChanged", /* member */
"/org/freedesktop/DBus", /* path */
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
test_connection_signal_handler,
&count_name_owner_changed,
NULL);
/* Note that s1b is *just like* s1 - this is to catch a bug where N
* subscriptions of the same rule causes N calls to each of the N
* subscriptions instead of just 1 call to each of the N subscriptions.
*/
s1b = g_dbus_connection_signal_subscribe (c1,
":1.2",
"org.gtk.GDBus.ExampleInterface",
"Foo",
"/org/gtk/GDBus/ExampleInterface",
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
test_connection_signal_handler,
&count_s1b,
NULL);
g_assert_cmpuint (s1, !=, 0);
g_assert_cmpuint (s1b, !=, 0);
g_assert_cmpuint (s2, !=, 0);
g_assert_cmpuint (s3, !=, 0);
count_s1 = 0;
count_s1b = 0;
count_s2 = 0;
count_name_owner_changed = 0;
/*
* Make c2 emit "Foo" - we should catch it twice
*
* Note that there is no way to be sure that the signal subscriptions
* on c1 are effective yet - for all we know, the AddMatch() messages
* could sit waiting in a buffer somewhere between this process and
* the message bus. And emitting signals on c2 (a completely other
* socket!) will not necessarily change this.
*
* To ensure this is not the case, do a synchronous call on c1.
*/
result = g_dbus_connection_call_sync (c1,
"org.freedesktop.DBus", /* bus name */
"/org/freedesktop/DBus", /* object path */
"org.freedesktop.DBus", /* interface name */
"GetId", /* method name */
NULL, /* parameters */
NULL, /* return type */
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
g_assert_no_error (error);
g_assert_nonnull (result);
g_variant_unref (result);
/*
* Bring up two other connections
*/
c2 = _g_bus_get_priv (G_BUS_TYPE_SESSION, NULL, NULL);
g_assert_nonnull (c2);
g_assert_false (g_dbus_connection_is_closed (c2));
g_assert_cmpstr (g_dbus_connection_get_unique_name (c2), ==, ":1.2");
c3 = _g_bus_get_priv (G_BUS_TYPE_SESSION, NULL, NULL);
g_assert_nonnull (c3);
g_assert_false (g_dbus_connection_is_closed (c3));
g_assert_cmpstr (g_dbus_connection_get_unique_name (c3), ==, ":1.3");
/* now, emit the signal on c2 */
ret = g_dbus_connection_emit_signal (c2,
NULL, /* destination bus name */
"/org/gtk/GDBus/ExampleInterface",
"org.gtk.GDBus.ExampleInterface",
"Foo",
NULL,
&error);
g_assert_no_error (error);
g_assert_true (ret);
while (!(count_s1 >= 1 && count_s2 >= 1))
g_main_loop_run (loop);
g_assert_cmpint (count_s1, ==, 1);
g_assert_cmpint (count_s2, ==, 1);
/*
* Make c3 emit "Foo" - we should catch it only once
*/
ret = g_dbus_connection_emit_signal (c3,
NULL, /* destination bus name */
"/org/gtk/GDBus/ExampleInterface",
"org.gtk.GDBus.ExampleInterface",
"Foo",
NULL,
&error);
g_assert_no_error (error);
g_assert_true (ret);
while (!(count_s1 == 1 && count_s2 == 2))
g_main_loop_run (loop);
g_assert_cmpint (count_s1, ==, 1);
g_assert_cmpint (count_s2, ==, 2);
/*
* Also to check the total amount of NameOwnerChanged signals - use a 5 second ceiling
* to avoid spinning forever
*/
quit_mainloop_fired = FALSE;
quit_mainloop_id = g_timeout_add (30000, test_connection_quit_mainloop, &quit_mainloop_fired);
while (count_name_owner_changed < 2 && !quit_mainloop_fired)
g_main_loop_run (loop);
g_source_remove (quit_mainloop_id);
g_assert_cmpint (count_s1, ==, 1);
g_assert_cmpint (count_s2, ==, 2);
g_assert_cmpint (count_name_owner_changed, ==, 2);
g_dbus_connection_signal_unsubscribe (c1, s1);
g_dbus_connection_signal_unsubscribe (c1, s2);
g_dbus_connection_signal_unsubscribe (c1, s3);
g_dbus_connection_signal_unsubscribe (c1, s1b);
g_object_unref (c1);
g_object_unref (c2);
g_object_unref (c3);
session_bus_down ();
}
static void
test_match_rule (GDBusConnection *connection,
GDBusSignalFlags flags,
gchar *arg0_rule,
gchar *arg0,
const gchar *signal_type,
gboolean should_match)
{
guint subscription_ids[2];
gint emissions = 0;
gint matches = 0;
GError *error = NULL;
subscription_ids[0] = g_dbus_connection_signal_subscribe (connection,
NULL, "org.gtk.ExampleInterface", "Foo", "/",
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
test_connection_signal_handler,
&emissions, NULL);
subscription_ids[1] = g_dbus_connection_signal_subscribe (connection,
NULL, "org.gtk.ExampleInterface", "Foo", "/",
arg0_rule,
flags,
test_connection_signal_handler,
&matches, NULL);
g_assert_cmpint (subscription_ids[0], !=, 0);
g_assert_cmpint (subscription_ids[1], !=, 0);
g_dbus_connection_emit_signal (connection,
NULL, "/", "org.gtk.ExampleInterface",
"Foo", g_variant_new (signal_type, arg0),
&error);
g_assert_no_error (error);
/* synchronously ping a non-existent method to make sure the signals are dispatched */
g_dbus_connection_call_sync (connection, "org.gtk.ExampleInterface", "/", "org.gtk.ExampleInterface",
"Bar", g_variant_new ("()"), G_VARIANT_TYPE_UNIT, G_DBUS_CALL_FLAGS_NONE,
-1, NULL, NULL);
while (g_main_context_iteration (NULL, FALSE))
;
g_assert_cmpint (emissions, ==, 1);
g_assert_cmpint (matches, ==, should_match ? 1 : 0);
g_dbus_connection_signal_unsubscribe (connection, subscription_ids[0]);
g_dbus_connection_signal_unsubscribe (connection, subscription_ids[1]);
}
static void
test_connection_signal_match_rules (void)
{
GDBusConnection *con;
session_bus_up ();
con = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_NONE, "foo", "foo", "(s)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_NONE, "foo", "bar", "(s)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_NAMESPACE, "org.gtk", "", "(s)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_NAMESPACE, "org.gtk", "org", "(s)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_NAMESPACE, "org.gtk", "org.gtk", "(s)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_NAMESPACE, "org.gtk", "org.gtk.Example", "(s)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_NAMESPACE, "org.gtk", "org.gtk+", "(s)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/", "/", "(s)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/", "", "(s)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk/Example", "/org/gtk/Example", "(s)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk/", "/org/gtk/Example", "(s)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk/Example", "/org/gtk/", "(s)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk/Example", "/org/gtk", "(s)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk+", "/org/gtk", "(s)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/", "/", "(o)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk/Example", "/org/gtk/Example", "(o)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk/", "/org/gtk/Example", "(o)", TRUE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk/Example", "/org/gtk", "(o)", FALSE);
test_match_rule (con, G_DBUS_SIGNAL_FLAGS_MATCH_ARG0_PATH, "/org/gtk+", "/org/gtk", "(o)", FALSE);
g_object_unref (con);
session_bus_down ();
}
/* ---------------------------------------------------------------------------------------------------- */
/* Accessed both from the test code and the filter function (in a worker thread)
* so all accesses must be atomic. */
typedef struct
{
GAsyncQueue *incoming_queue; /* (element-type GDBusMessage) */
guint num_outgoing; /* (atomic) */
} FilterData;
/* Runs in a worker thread. */
static GDBusMessage *
filter_func (GDBusConnection *connection,
GDBusMessage *message,
gboolean incoming,
gpointer user_data)
{
FilterData *data = user_data;
if (incoming)
g_async_queue_push (data->incoming_queue, g_object_ref (message));
else
g_atomic_int_inc (&data->num_outgoing);
return message;
}
static void
wait_for_filtered_reply (GAsyncQueue *incoming_queue,
guint32 expected_serial)
{
GDBusMessage *popped_message = NULL;
while ((popped_message = g_async_queue_pop (incoming_queue)) != NULL)
{
guint32 reply_serial = g_dbus_message_get_reply_serial (popped_message);
g_object_unref (popped_message);
if (reply_serial == expected_serial)
return;
}
g_assert_not_reached ();
}
typedef struct
{
gboolean alter_incoming;
gboolean alter_outgoing;
} FilterEffects;
/* Runs in a worker thread. */
static GDBusMessage *
other_filter_func (GDBusConnection *connection,
GDBusMessage *message,
gboolean incoming,
gpointer user_data)
{
const FilterEffects *effects = user_data;
GDBusMessage *ret;
gboolean alter;
if (incoming)
alter = effects->alter_incoming;
else
alter = effects->alter_outgoing;
if (alter)
{
GDBusMessage *copy;
GVariant *body;
gchar *s;
gchar *s2;
copy = g_dbus_message_copy (message, NULL);
g_object_unref (message);
body = g_dbus_message_get_body (copy);
g_variant_get (body, "(s)", &s);
s2 = g_strdup_printf ("MOD: %s", s);
g_dbus_message_set_body (copy, g_variant_new ("(s)", s2));
g_free (s2);
g_free (s);
ret = copy;
}
else
{
ret = message;
}
return ret;
}
static void
test_connection_filter_name_owner_changed_signal_handler (GDBusConnection *connection,
const gchar *sender_name,
const gchar *object_path,
const gchar *interface_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
const gchar *name;
const gchar *old_owner;
const gchar *new_owner;
g_variant_get (parameters,
"(&s&s&s)",
&name,
&old_owner,
&new_owner);
if (g_strcmp0 (name, "com.example.TestService") == 0 && strlen (new_owner) > 0)
{
g_main_loop_quit (loop);
}
}
static gboolean
test_connection_filter_on_timeout (gpointer user_data)
{
g_printerr ("Timeout waiting 30 sec on service\n");
g_assert_not_reached ();
return G_SOURCE_REMOVE;
}
static void
test_connection_filter (void)
{
GDBusConnection *c;
FilterData data = { NULL, 0 };
GDBusMessage *m;
GDBusMessage *m2;
GDBusMessage *r;
GError *error;
guint filter_id;
guint timeout_mainloop_id;
guint signal_handler_id;
FilterEffects effects;
GVariant *result;
const gchar *s;
guint32 serial_temp;
session_bus_up ();
error = NULL;
c = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (c);
data.incoming_queue = g_async_queue_new_full (g_object_unref);
data.num_outgoing = 0;
filter_id = g_dbus_connection_add_filter (c,
filter_func,
&data,
NULL);
m = g_dbus_message_new_method_call ("org.freedesktop.DBus", /* name */
"/org/freedesktop/DBus", /* path */
"org.freedesktop.DBus", /* interface */
"GetNameOwner");
g_dbus_message_set_body (m, g_variant_new ("(s)", "org.freedesktop.DBus"));
error = NULL;
g_dbus_connection_send_message (c, m, G_DBUS_SEND_MESSAGE_FLAGS_NONE, &serial_temp, &error);
g_assert_no_error (error);
wait_for_filtered_reply (data.incoming_queue, serial_temp);
m2 = g_dbus_message_copy (m, &error);
g_assert_no_error (error);
g_dbus_connection_send_message (c, m2, G_DBUS_SEND_MESSAGE_FLAGS_NONE, &serial_temp, &error);
g_object_unref (m2);
g_assert_no_error (error);
wait_for_filtered_reply (data.incoming_queue, serial_temp);
m2 = g_dbus_message_copy (m, &error);
g_assert_no_error (error);
g_dbus_message_set_serial (m2, serial_temp);
/* lock the message to test PRESERVE_SERIAL flag. */
g_dbus_message_lock (m2);
g_dbus_connection_send_message (c, m2, G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL, &serial_temp, &error);
g_object_unref (m2);
g_assert_no_error (error);
wait_for_filtered_reply (data.incoming_queue, serial_temp);
m2 = g_dbus_message_copy (m, &error);
g_assert_no_error (error);
r = g_dbus_connection_send_message_with_reply_sync (c,
m2,
G_DBUS_SEND_MESSAGE_FLAGS_NONE,
-1,
&serial_temp,
NULL, /* GCancellable */
&error);
g_object_unref (m2);
g_assert_no_error (error);
g_assert_nonnull (r);
g_object_unref (r);
wait_for_filtered_reply (data.incoming_queue, serial_temp);
g_assert_cmpint (g_async_queue_length (data.incoming_queue), ==, 0);
g_dbus_connection_remove_filter (c, filter_id);
m2 = g_dbus_message_copy (m, &error);
g_assert_no_error (error);
r = g_dbus_connection_send_message_with_reply_sync (c,
m2,
G_DBUS_SEND_MESSAGE_FLAGS_NONE,
-1,
&serial_temp,
NULL, /* GCancellable */
&error);
g_object_unref (m2);
g_assert_no_error (error);
g_assert_nonnull (r);
g_object_unref (r);
g_assert_cmpint (g_async_queue_length (data.incoming_queue), ==, 0);
g_assert_cmpint (g_atomic_int_get (&data.num_outgoing), ==, 4);
/* wait for service to be available */
signal_handler_id = g_dbus_connection_signal_subscribe (c,
"org.freedesktop.DBus", /* sender */
"org.freedesktop.DBus",
"NameOwnerChanged",
"/org/freedesktop/DBus",
NULL, /* arg0 */
G_DBUS_SIGNAL_FLAGS_NONE,
test_connection_filter_name_owner_changed_signal_handler,
NULL,
NULL);
g_assert_cmpint (signal_handler_id, !=, 0);
/* this is safe; testserver will exit once the bus goes away */
g_assert_true (g_spawn_command_line_async (g_test_get_filename (G_TEST_BUILT, "gdbus-testserver", NULL), NULL));
timeout_mainloop_id = g_timeout_add (30000, test_connection_filter_on_timeout, NULL);
g_main_loop_run (loop);
g_source_remove (timeout_mainloop_id);
g_dbus_connection_signal_unsubscribe (c, signal_handler_id);
/* now test some combinations... */
filter_id = g_dbus_connection_add_filter (c,
other_filter_func,
&effects,
NULL);
/* -- */
effects.alter_incoming = FALSE;
effects.alter_outgoing = FALSE;
error = NULL;
result = g_dbus_connection_call_sync (c,
"com.example.TestService", /* bus name */
"/com/example/TestObject", /* object path */
"com.example.Frob", /* interface name */
"HelloWorld", /* method name */
g_variant_new ("(s)", "Cat"), /* parameters */
G_VARIANT_TYPE ("(s)"), /* return type */
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
g_assert_no_error (error);
g_variant_get (result, "(&s)", &s);
g_assert_cmpstr (s, ==, "You greeted me with 'Cat'. Thanks!");
g_variant_unref (result);
/* -- */
effects.alter_incoming = TRUE;
effects.alter_outgoing = TRUE;
error = NULL;
result = g_dbus_connection_call_sync (c,
"com.example.TestService", /* bus name */
"/com/example/TestObject", /* object path */
"com.example.Frob", /* interface name */
"HelloWorld", /* method name */
g_variant_new ("(s)", "Cat"), /* parameters */
G_VARIANT_TYPE ("(s)"), /* return type */
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
g_assert_no_error (error);
g_variant_get (result, "(&s)", &s);
g_assert_cmpstr (s, ==, "MOD: You greeted me with 'MOD: Cat'. Thanks!");
g_variant_unref (result);
g_dbus_connection_remove_filter (c, filter_id);
g_object_unref (c);
g_object_unref (m);
g_async_queue_unref (data.incoming_queue);
session_bus_down ();
}
/* ---------------------------------------------------------------------------------------------------- */
#define NUM_THREADS 50
static void
send_bogus_message (GDBusConnection *c, guint32 *out_serial)
{
GDBusMessage *m;
GError *error;
m = g_dbus_message_new_method_call ("org.freedesktop.DBus", /* name */
"/org/freedesktop/DBus", /* path */
"org.freedesktop.DBus", /* interface */
"GetNameOwner");
g_dbus_message_set_body (m, g_variant_new ("(s)", "org.freedesktop.DBus"));
error = NULL;
g_dbus_connection_send_message (c, m, G_DBUS_SEND_MESSAGE_FLAGS_NONE, out_serial, &error);
g_assert_no_error (error);
g_object_unref (m);
}
#define SLEEP_USEC (100 * 1000)
static gpointer
serials_thread_func (GDBusConnection *c)
{
guint32 message_serial;
guint i;
/* No calls on this thread yet */
g_assert_cmpint (g_dbus_connection_get_last_serial(c), ==, 0);
/* Send a bogus message and store its serial */
message_serial = 0;
send_bogus_message (c, &message_serial);
/* Give it some time to actually send the message out. 10 seconds
* should be plenty, even on slow machines. */
for (i = 0; i < 10 * G_USEC_PER_SEC / SLEEP_USEC; i++)
{
if (g_dbus_connection_get_last_serial(c) != 0)
break;
g_usleep (SLEEP_USEC);
}
g_assert_cmpint (g_dbus_connection_get_last_serial(c), !=, 0);
g_assert_cmpint (g_dbus_connection_get_last_serial(c), ==, message_serial);
return NULL;
}
static void
test_connection_serials (void)
{
GDBusConnection *c;
GError *error;
GThread *pool[NUM_THREADS];
int i;
session_bus_up ();
error = NULL;
c = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (c);
/* Status after initialization */
g_assert_cmpint (g_dbus_connection_get_last_serial (c), ==, 1);
/* Send a bogus message */
send_bogus_message (c, NULL);
g_assert_cmpint (g_dbus_connection_get_last_serial (c), ==, 2);
/* Start the threads */
for (i = 0; i < NUM_THREADS; i++)
pool[i] = g_thread_new (NULL, (GThreadFunc) serials_thread_func, c);
/* Wait until threads are finished */
for (i = 0; i < NUM_THREADS; i++)
g_thread_join (pool[i]);
/* No calls in between on this thread, should be the last value */
g_assert_cmpint (g_dbus_connection_get_last_serial (c), ==, 2);
send_bogus_message (c, NULL);
/* All above calls + calls in threads */
g_assert_cmpint (g_dbus_connection_get_last_serial (c), ==, 3 + NUM_THREADS);
g_object_unref (c);
session_bus_down ();
}
/* ---------------------------------------------------------------------------------------------------- */
static void
get_connection_cb_expect_cancel (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GDBusConnection *c;
GError *error;
error = NULL;
c = g_bus_get_finish (res, &error);
/* unref here to avoid timeouts when the test fails */
if (c)
g_object_unref (c);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CANCELLED);
g_assert_null (c);
g_error_free (error);
}
static void
get_connection_cb_expect_success (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GDBusConnection *c;
GError *error;
error = NULL;
c = g_bus_get_finish (res, &error);
g_assert_no_error (error);
g_assert_nonnull (c);
g_main_loop_quit (loop);
g_object_unref (c);
}
static void
test_connection_cancel (void)
{
GCancellable *cancellable, *cancellable2;
g_test_summary ("Test that cancelling one of two racing g_bus_get() calls does not cancel the other one");
session_bus_up ();
cancellable = g_cancellable_new ();
cancellable2 = g_cancellable_new ();
g_bus_get (G_BUS_TYPE_SESSION, cancellable, get_connection_cb_expect_cancel, NULL);
g_bus_get (G_BUS_TYPE_SESSION, cancellable2, get_connection_cb_expect_success, NULL);
g_cancellable_cancel (cancellable);
g_main_loop_run (loop);
g_object_unref (cancellable);
g_object_unref (cancellable2);
session_bus_down ();
}
/* ---------------------------------------------------------------------------------------------------- */
static void
test_connection_basic (void)
{
GDBusConnection *connection;
GError *error;
GDBusCapabilityFlags flags;
GDBusConnectionFlags connection_flags;
gchar *guid;
gchar *name;
gboolean closed;
gboolean exit_on_close;
GIOStream *stream;
GCredentials *credentials;
session_bus_up ();
error = NULL;
connection = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error (error);
g_assert_nonnull (connection);
flags = g_dbus_connection_get_capabilities (connection);
g_assert_true (flags == G_DBUS_CAPABILITY_FLAGS_NONE ||
flags == G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING);
connection_flags = g_dbus_connection_get_flags (connection);
/* Ignore G_DBUS_CONNECTION_FLAGS_CROSS_NAMESPACE, it's an
* implementation detail whether we set it */
connection_flags &= ~G_DBUS_CONNECTION_FLAGS_CROSS_NAMESPACE;
g_assert_cmpint (connection_flags, ==,
G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT |
G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION);
credentials = g_dbus_connection_get_peer_credentials (connection);
g_assert_null (credentials);
g_object_get (connection,
"stream", &stream,
"guid", &guid,
"unique-name", &name,
"closed", &closed,
"exit-on-close", &exit_on_close,
"capabilities", &flags,
NULL);
g_assert_true (G_IS_IO_STREAM (stream));
g_assert_true (g_dbus_is_guid (guid));
g_assert_true (g_dbus_is_unique_name (name));
g_assert_false (closed);
g_assert_true (exit_on_close);
g_assert_true (flags == G_DBUS_CAPABILITY_FLAGS_NONE ||
flags == G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING);
g_object_unref (stream);
g_free (name);
g_free (guid);
g_object_unref (connection);
session_bus_down ();
}
/* ---------------------------------------------------------------------------------------------------- */
int
main (int argc,
char *argv[])
{
int ret;
g_test_init (&argc, &argv, G_TEST_OPTION_ISOLATE_DIRS, NULL);
/* all the tests rely on a shared main loop */
loop = g_main_loop_new (NULL, FALSE);
g_test_dbus_unset ();
/* gdbus cleanup is pretty racy due to worker threads, so always do this test first */
g_test_add_func ("/gdbus/connection/bus-failure", test_connection_bus_failure);
g_test_add_func ("/gdbus/connection/basic", test_connection_basic);
g_test_add_func ("/gdbus/connection/life-cycle", test_connection_life_cycle);
g_test_add_func ("/gdbus/connection/send", test_connection_send);
g_test_add_func ("/gdbus/connection/signals", test_connection_signals);
g_test_add_func ("/gdbus/connection/signal-match-rules", test_connection_signal_match_rules);
g_test_add_func ("/gdbus/connection/filter", test_connection_filter);
g_test_add_func ("/gdbus/connection/serials", test_connection_serials);
g_test_add_func ("/gdbus/connection/cancel", test_connection_cancel);
ret = g_test_run();
g_main_loop_unref (loop);
return ret;
}
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