mirror of
https://gitlab.gnome.org/GNOME/glib.git
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18a33f72db
If we have an input parameter (or return value) we need to use (nullable). However, if it is an (inout) or (out) parameter, (optional) is sufficient. It looks like (nullable) could be used for everything according to the Annotation documentation, but (optional) is more specific.
3205 lines
109 KiB
C
3205 lines
109 KiB
C
/* GDBus - GLib D-Bus Library
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*
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* Copyright (C) 2008-2010 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: David Zeuthen <davidz@redhat.com>
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include "gdbusutils.h"
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#include "gdbusproxy.h"
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#include "gioenumtypes.h"
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#include "gdbusconnection.h"
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#include "gdbuserror.h"
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#include "gdbusprivate.h"
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#include "ginitable.h"
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#include "gasyncinitable.h"
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#include "gioerror.h"
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#include "gtask.h"
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#include "gcancellable.h"
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#include "gdbusinterface.h"
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#include "gasyncresult.h"
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#ifdef G_OS_UNIX
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#include "gunixfdlist.h"
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#endif
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#include "glibintl.h"
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/**
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* SECTION:gdbusproxy
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* @short_description: Client-side D-Bus interface proxy
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* @include: gio/gio.h
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*
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* #GDBusProxy is a base class used for proxies to access a D-Bus
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* interface on a remote object. A #GDBusProxy can be constructed for
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* both well-known and unique names.
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*
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* By default, #GDBusProxy will cache all properties (and listen to
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* changes) of the remote object, and proxy all signals that gets
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* emitted. This behaviour can be changed by passing suitable
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* #GDBusProxyFlags when the proxy is created. If the proxy is for a
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* well-known name, the property cache is flushed when the name owner
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* vanishes and reloaded when a name owner appears.
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*
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* If a #GDBusProxy is used for a well-known name, the owner of the
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* name is tracked and can be read from
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* #GDBusProxy:g-name-owner. Connect to the #GObject::notify signal to
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* get notified of changes. Additionally, only signals and property
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* changes emitted from the current name owner are considered and
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* calls are always sent to the current name owner. This avoids a
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* number of race conditions when the name is lost by one owner and
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* claimed by another. However, if no name owner currently exists,
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* then calls will be sent to the well-known name which may result in
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* the message bus launching an owner (unless
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* %G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START is set).
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*
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* The generic #GDBusProxy::g-properties-changed and
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* #GDBusProxy::g-signal signals are not very convenient to work with.
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* Therefore, the recommended way of working with proxies is to subclass
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* #GDBusProxy, and have more natural properties and signals in your derived
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* class. This [example][gdbus-example-gdbus-codegen] shows how this can
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* easily be done using the [gdbus-codegen][gdbus-codegen] tool.
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*
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* A #GDBusProxy instance can be used from multiple threads but note
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* that all signals (e.g. #GDBusProxy::g-signal, #GDBusProxy::g-properties-changed
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* and #GObject::notify) are emitted in the
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* [thread-default main context][g-main-context-push-thread-default]
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* of the thread where the instance was constructed.
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*
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* An example using a proxy for a well-known name can be found in
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* [gdbus-example-watch-proxy.c](https://git.gnome.org/browse/glib/tree/gio/tests/gdbus-example-watch-proxy.c)
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*/
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/* lock protecting the mutable properties: name_owner, timeout_msec,
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* expected_interface, and the properties hash table
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*/
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G_LOCK_DEFINE_STATIC (properties_lock);
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/* ---------------------------------------------------------------------------------------------------- */
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G_LOCK_DEFINE_STATIC (signal_subscription_lock);
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typedef struct
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{
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volatile gint ref_count;
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GDBusProxy *proxy;
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} SignalSubscriptionData;
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static SignalSubscriptionData *
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signal_subscription_ref (SignalSubscriptionData *data)
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{
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g_atomic_int_inc (&data->ref_count);
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return data;
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}
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static void
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signal_subscription_unref (SignalSubscriptionData *data)
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{
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if (g_atomic_int_dec_and_test (&data->ref_count))
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{
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g_slice_free (SignalSubscriptionData, data);
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}
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}
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/* ---------------------------------------------------------------------------------------------------- */
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struct _GDBusProxyPrivate
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{
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GBusType bus_type;
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GDBusProxyFlags flags;
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GDBusConnection *connection;
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gchar *name;
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/* mutable, protected by properties_lock */
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gchar *name_owner;
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gchar *object_path;
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gchar *interface_name;
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/* mutable, protected by properties_lock */
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gint timeout_msec;
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guint name_owner_changed_subscription_id;
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GCancellable *get_all_cancellable;
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/* gchar* -> GVariant*, protected by properties_lock */
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GHashTable *properties;
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/* mutable, protected by properties_lock */
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GDBusInterfaceInfo *expected_interface;
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guint properties_changed_subscription_id;
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guint signals_subscription_id;
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gboolean initialized;
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/* mutable, protected by properties_lock */
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GDBusObject *object;
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SignalSubscriptionData *signal_subscription_data;
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};
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enum
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{
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PROP_0,
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PROP_G_CONNECTION,
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PROP_G_BUS_TYPE,
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PROP_G_NAME,
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PROP_G_NAME_OWNER,
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PROP_G_FLAGS,
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PROP_G_OBJECT_PATH,
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PROP_G_INTERFACE_NAME,
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PROP_G_DEFAULT_TIMEOUT,
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PROP_G_INTERFACE_INFO
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};
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enum
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{
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PROPERTIES_CHANGED_SIGNAL,
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SIGNAL_SIGNAL,
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LAST_SIGNAL,
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};
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static guint signals[LAST_SIGNAL] = {0};
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static void dbus_interface_iface_init (GDBusInterfaceIface *dbus_interface_iface);
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static void initable_iface_init (GInitableIface *initable_iface);
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static void async_initable_iface_init (GAsyncInitableIface *async_initable_iface);
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G_DEFINE_TYPE_WITH_CODE (GDBusProxy, g_dbus_proxy, G_TYPE_OBJECT,
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G_ADD_PRIVATE (GDBusProxy)
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G_IMPLEMENT_INTERFACE (G_TYPE_DBUS_INTERFACE, dbus_interface_iface_init)
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G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, initable_iface_init)
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G_IMPLEMENT_INTERFACE (G_TYPE_ASYNC_INITABLE, async_initable_iface_init))
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static void
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g_dbus_proxy_dispose (GObject *object)
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{
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GDBusProxy *proxy = G_DBUS_PROXY (object);
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G_LOCK (signal_subscription_lock);
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if (proxy->priv->signal_subscription_data != NULL)
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{
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proxy->priv->signal_subscription_data->proxy = NULL;
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signal_subscription_unref (proxy->priv->signal_subscription_data);
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proxy->priv->signal_subscription_data = NULL;
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}
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G_UNLOCK (signal_subscription_lock);
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G_OBJECT_CLASS (g_dbus_proxy_parent_class)->dispose (object);
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}
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static void
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g_dbus_proxy_finalize (GObject *object)
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{
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GDBusProxy *proxy = G_DBUS_PROXY (object);
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g_warn_if_fail (proxy->priv->get_all_cancellable == NULL);
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if (proxy->priv->name_owner_changed_subscription_id > 0)
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g_dbus_connection_signal_unsubscribe (proxy->priv->connection,
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proxy->priv->name_owner_changed_subscription_id);
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if (proxy->priv->properties_changed_subscription_id > 0)
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g_dbus_connection_signal_unsubscribe (proxy->priv->connection,
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proxy->priv->properties_changed_subscription_id);
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if (proxy->priv->signals_subscription_id > 0)
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g_dbus_connection_signal_unsubscribe (proxy->priv->connection,
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proxy->priv->signals_subscription_id);
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if (proxy->priv->connection != NULL)
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g_object_unref (proxy->priv->connection);
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g_free (proxy->priv->name);
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g_free (proxy->priv->name_owner);
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g_free (proxy->priv->object_path);
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g_free (proxy->priv->interface_name);
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if (proxy->priv->properties != NULL)
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g_hash_table_unref (proxy->priv->properties);
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if (proxy->priv->expected_interface != NULL)
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{
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g_dbus_interface_info_cache_release (proxy->priv->expected_interface);
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g_dbus_interface_info_unref (proxy->priv->expected_interface);
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}
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if (proxy->priv->object != NULL)
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g_object_remove_weak_pointer (G_OBJECT (proxy->priv->object), (gpointer *) &proxy->priv->object);
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G_OBJECT_CLASS (g_dbus_proxy_parent_class)->finalize (object);
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}
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static void
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g_dbus_proxy_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GDBusProxy *proxy = G_DBUS_PROXY (object);
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switch (prop_id)
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{
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case PROP_G_CONNECTION:
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g_value_set_object (value, proxy->priv->connection);
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break;
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case PROP_G_FLAGS:
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g_value_set_flags (value, proxy->priv->flags);
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break;
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case PROP_G_NAME:
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g_value_set_string (value, proxy->priv->name);
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break;
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case PROP_G_NAME_OWNER:
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g_value_take_string (value, g_dbus_proxy_get_name_owner (proxy));
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break;
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case PROP_G_OBJECT_PATH:
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g_value_set_string (value, proxy->priv->object_path);
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break;
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case PROP_G_INTERFACE_NAME:
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g_value_set_string (value, proxy->priv->interface_name);
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break;
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case PROP_G_DEFAULT_TIMEOUT:
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g_value_set_int (value, g_dbus_proxy_get_default_timeout (proxy));
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break;
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case PROP_G_INTERFACE_INFO:
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g_value_set_boxed (value, g_dbus_proxy_get_interface_info (proxy));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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g_dbus_proxy_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GDBusProxy *proxy = G_DBUS_PROXY (object);
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switch (prop_id)
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{
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case PROP_G_CONNECTION:
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proxy->priv->connection = g_value_dup_object (value);
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break;
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case PROP_G_FLAGS:
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proxy->priv->flags = g_value_get_flags (value);
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break;
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case PROP_G_NAME:
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proxy->priv->name = g_value_dup_string (value);
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break;
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case PROP_G_OBJECT_PATH:
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proxy->priv->object_path = g_value_dup_string (value);
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break;
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case PROP_G_INTERFACE_NAME:
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proxy->priv->interface_name = g_value_dup_string (value);
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break;
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case PROP_G_DEFAULT_TIMEOUT:
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g_dbus_proxy_set_default_timeout (proxy, g_value_get_int (value));
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break;
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case PROP_G_INTERFACE_INFO:
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g_dbus_proxy_set_interface_info (proxy, g_value_get_boxed (value));
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break;
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case PROP_G_BUS_TYPE:
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proxy->priv->bus_type = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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g_dbus_proxy_class_init (GDBusProxyClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->dispose = g_dbus_proxy_dispose;
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gobject_class->finalize = g_dbus_proxy_finalize;
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gobject_class->set_property = g_dbus_proxy_set_property;
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gobject_class->get_property = g_dbus_proxy_get_property;
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/* Note that all property names are prefixed to avoid collisions with D-Bus property names
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* in derived classes */
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/**
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* GDBusProxy:g-interface-info:
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*
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* Ensure that interactions with this proxy conform to the given
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* interface. This is mainly to ensure that malformed data received
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* from the other peer is ignored. The given #GDBusInterfaceInfo is
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* said to be the "expected interface".
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*
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* The checks performed are:
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* - When completing a method call, if the type signature of
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* the reply message isn't what's expected, the reply is
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* discarded and the #GError is set to %G_IO_ERROR_INVALID_ARGUMENT.
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*
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* - Received signals that have a type signature mismatch are dropped and
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* a warning is logged via g_warning().
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*
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* - Properties received via the initial `GetAll()` call or via the
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* `::PropertiesChanged` signal (on the
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* [org.freedesktop.DBus.Properties](http://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-properties)
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* interface) or set using g_dbus_proxy_set_cached_property()
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* with a type signature mismatch are ignored and a warning is
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* logged via g_warning().
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*
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* Note that these checks are never done on methods, signals and
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* properties that are not referenced in the given
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* #GDBusInterfaceInfo, since extending a D-Bus interface on the
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* service-side is not considered an ABI break.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_G_INTERFACE_INFO,
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g_param_spec_boxed ("g-interface-info",
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P_("Interface Information"),
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P_("Interface Information"),
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G_TYPE_DBUS_INTERFACE_INFO,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_BLURB |
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G_PARAM_STATIC_NICK));
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/**
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* GDBusProxy:g-connection:
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*
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* The #GDBusConnection the proxy is for.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_G_CONNECTION,
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g_param_spec_object ("g-connection",
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P_("g-connection"),
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P_("The connection the proxy is for"),
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G_TYPE_DBUS_CONNECTION,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_BLURB |
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G_PARAM_STATIC_NICK));
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/**
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* GDBusProxy:g-bus-type:
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*
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* If this property is not %G_BUS_TYPE_NONE, then
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* #GDBusProxy:g-connection must be %NULL and will be set to the
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* #GDBusConnection obtained by calling g_bus_get() with the value
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* of this property.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_G_BUS_TYPE,
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g_param_spec_enum ("g-bus-type",
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P_("Bus Type"),
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P_("The bus to connect to, if any"),
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G_TYPE_BUS_TYPE,
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G_BUS_TYPE_NONE,
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G_PARAM_WRITABLE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_BLURB |
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G_PARAM_STATIC_NICK));
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/**
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* GDBusProxy:g-flags:
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*
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* Flags from the #GDBusProxyFlags enumeration.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_G_FLAGS,
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g_param_spec_flags ("g-flags",
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P_("g-flags"),
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P_("Flags for the proxy"),
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G_TYPE_DBUS_PROXY_FLAGS,
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G_DBUS_PROXY_FLAGS_NONE,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_BLURB |
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G_PARAM_STATIC_NICK));
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|
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/**
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* GDBusProxy:g-name:
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*
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* The well-known or unique name that the proxy is for.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_G_NAME,
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g_param_spec_string ("g-name",
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P_("g-name"),
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P_("The well-known or unique name that the proxy is for"),
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NULL,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_BLURB |
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G_PARAM_STATIC_NICK));
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/**
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* GDBusProxy:g-name-owner:
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*
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* The unique name that owns #GDBusProxy:g-name or %NULL if no-one
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* currently owns that name. You may connect to #GObject::notify signal to
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* track changes to this property.
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*
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|
* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_G_NAME_OWNER,
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g_param_spec_string ("g-name-owner",
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P_("g-name-owner"),
|
|
P_("The unique name for the owner"),
|
|
NULL,
|
|
G_PARAM_READABLE |
|
|
G_PARAM_STATIC_NAME |
|
|
G_PARAM_STATIC_BLURB |
|
|
G_PARAM_STATIC_NICK));
|
|
|
|
/**
|
|
* GDBusProxy:g-object-path:
|
|
*
|
|
* The object path the proxy is for.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_G_OBJECT_PATH,
|
|
g_param_spec_string ("g-object-path",
|
|
P_("g-object-path"),
|
|
P_("The object path the proxy is for"),
|
|
NULL,
|
|
G_PARAM_READABLE |
|
|
G_PARAM_WRITABLE |
|
|
G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_STATIC_NAME |
|
|
G_PARAM_STATIC_BLURB |
|
|
G_PARAM_STATIC_NICK));
|
|
|
|
/**
|
|
* GDBusProxy:g-interface-name:
|
|
*
|
|
* The D-Bus interface name the proxy is for.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_G_INTERFACE_NAME,
|
|
g_param_spec_string ("g-interface-name",
|
|
P_("g-interface-name"),
|
|
P_("The D-Bus interface name the proxy is for"),
|
|
NULL,
|
|
G_PARAM_READABLE |
|
|
G_PARAM_WRITABLE |
|
|
G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_STATIC_NAME |
|
|
G_PARAM_STATIC_BLURB |
|
|
G_PARAM_STATIC_NICK));
|
|
|
|
/**
|
|
* GDBusProxy:g-default-timeout:
|
|
*
|
|
* The timeout to use if -1 (specifying default timeout) is passed
|
|
* as @timeout_msec in the g_dbus_proxy_call() and
|
|
* g_dbus_proxy_call_sync() functions.
|
|
*
|
|
* This allows applications to set a proxy-wide timeout for all
|
|
* remote method invocations on the proxy. If this property is -1,
|
|
* the default timeout (typically 25 seconds) is used. If set to
|
|
* %G_MAXINT, then no timeout is used.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_G_DEFAULT_TIMEOUT,
|
|
g_param_spec_int ("g-default-timeout",
|
|
P_("Default Timeout"),
|
|
P_("Timeout for remote method invocation"),
|
|
-1,
|
|
G_MAXINT,
|
|
-1,
|
|
G_PARAM_READABLE |
|
|
G_PARAM_WRITABLE |
|
|
G_PARAM_CONSTRUCT |
|
|
G_PARAM_STATIC_NAME |
|
|
G_PARAM_STATIC_BLURB |
|
|
G_PARAM_STATIC_NICK));
|
|
|
|
/**
|
|
* GDBusProxy::g-properties-changed:
|
|
* @proxy: The #GDBusProxy emitting the signal.
|
|
* @changed_properties: A #GVariant containing the properties that changed
|
|
* @invalidated_properties: A %NULL terminated array of properties that was invalidated
|
|
*
|
|
* Emitted when one or more D-Bus properties on @proxy changes. The
|
|
* local cache has already been updated when this signal fires. Note
|
|
* that both @changed_properties and @invalidated_properties are
|
|
* guaranteed to never be %NULL (either may be empty though).
|
|
*
|
|
* If the proxy has the flag
|
|
* %G_DBUS_PROXY_FLAGS_GET_INVALIDATED_PROPERTIES set, then
|
|
* @invalidated_properties will always be empty.
|
|
*
|
|
* This signal corresponds to the
|
|
* `PropertiesChanged` D-Bus signal on the
|
|
* `org.freedesktop.DBus.Properties` interface.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
signals[PROPERTIES_CHANGED_SIGNAL] = g_signal_new (I_("g-properties-changed"),
|
|
G_TYPE_DBUS_PROXY,
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_MUST_COLLECT,
|
|
G_STRUCT_OFFSET (GDBusProxyClass, g_properties_changed),
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
G_TYPE_NONE,
|
|
2,
|
|
G_TYPE_VARIANT,
|
|
G_TYPE_STRV | G_SIGNAL_TYPE_STATIC_SCOPE);
|
|
|
|
/**
|
|
* GDBusProxy::g-signal:
|
|
* @proxy: The #GDBusProxy emitting the signal.
|
|
* @sender_name: (nullable): The sender of the signal or %NULL if the connection is not a bus connection.
|
|
* @signal_name: The name of the signal.
|
|
* @parameters: A #GVariant tuple with parameters for the signal.
|
|
*
|
|
* Emitted when a signal from the remote object and interface that @proxy is for, has been received.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
signals[SIGNAL_SIGNAL] = g_signal_new (I_("g-signal"),
|
|
G_TYPE_DBUS_PROXY,
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_MUST_COLLECT,
|
|
G_STRUCT_OFFSET (GDBusProxyClass, g_signal),
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
G_TYPE_NONE,
|
|
3,
|
|
G_TYPE_STRING,
|
|
G_TYPE_STRING,
|
|
G_TYPE_VARIANT);
|
|
|
|
}
|
|
|
|
static void
|
|
g_dbus_proxy_init (GDBusProxy *proxy)
|
|
{
|
|
proxy->priv = g_dbus_proxy_get_instance_private (proxy);
|
|
proxy->priv->signal_subscription_data = g_slice_new0 (SignalSubscriptionData);
|
|
proxy->priv->signal_subscription_data->ref_count = 1;
|
|
proxy->priv->signal_subscription_data->proxy = proxy;
|
|
proxy->priv->properties = g_hash_table_new_full (g_str_hash,
|
|
g_str_equal,
|
|
g_free,
|
|
(GDestroyNotify) g_variant_unref);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static gint
|
|
property_name_sort_func (const gchar **a,
|
|
const gchar **b)
|
|
{
|
|
return g_strcmp0 (*a, *b);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_cached_property_names:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* Gets the names of all cached properties on @proxy.
|
|
*
|
|
* Returns: (transfer full): A %NULL-terminated array of strings or %NULL if
|
|
* @proxy has no cached properties. Free the returned array with
|
|
* g_strfreev().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gchar **
|
|
g_dbus_proxy_get_cached_property_names (GDBusProxy *proxy)
|
|
{
|
|
gchar **names;
|
|
GPtrArray *p;
|
|
GHashTableIter iter;
|
|
const gchar *key;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
names = NULL;
|
|
if (g_hash_table_size (proxy->priv->properties) == 0)
|
|
goto out;
|
|
|
|
p = g_ptr_array_new ();
|
|
|
|
g_hash_table_iter_init (&iter, proxy->priv->properties);
|
|
while (g_hash_table_iter_next (&iter, (gpointer) &key, NULL))
|
|
g_ptr_array_add (p, g_strdup (key));
|
|
g_ptr_array_sort (p, (GCompareFunc) property_name_sort_func);
|
|
g_ptr_array_add (p, NULL);
|
|
|
|
names = (gchar **) g_ptr_array_free (p, FALSE);
|
|
|
|
out:
|
|
G_UNLOCK (properties_lock);
|
|
return names;
|
|
}
|
|
|
|
/* properties_lock must be held for as long as you will keep the
|
|
* returned value
|
|
*/
|
|
static const GDBusPropertyInfo *
|
|
lookup_property_info (GDBusProxy *proxy,
|
|
const gchar *property_name)
|
|
{
|
|
const GDBusPropertyInfo *info = NULL;
|
|
|
|
if (proxy->priv->expected_interface == NULL)
|
|
goto out;
|
|
|
|
info = g_dbus_interface_info_lookup_property (proxy->priv->expected_interface, property_name);
|
|
|
|
out:
|
|
return info;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_cached_property:
|
|
* @proxy: A #GDBusProxy.
|
|
* @property_name: Property name.
|
|
*
|
|
* Looks up the value for a property from the cache. This call does no
|
|
* blocking IO.
|
|
*
|
|
* If @proxy has an expected interface (see
|
|
* #GDBusProxy:g-interface-info) and @property_name is referenced by
|
|
* it, then @value is checked against the type of the property.
|
|
*
|
|
* Returns: A reference to the #GVariant instance that holds the value
|
|
* for @property_name or %NULL if the value is not in the cache. The
|
|
* returned reference must be freed with g_variant_unref().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GVariant *
|
|
g_dbus_proxy_get_cached_property (GDBusProxy *proxy,
|
|
const gchar *property_name)
|
|
{
|
|
const GDBusPropertyInfo *info;
|
|
GVariant *value;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
g_return_val_if_fail (property_name != NULL, NULL);
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
value = g_hash_table_lookup (proxy->priv->properties, property_name);
|
|
if (value == NULL)
|
|
goto out;
|
|
|
|
info = lookup_property_info (proxy, property_name);
|
|
if (info != NULL)
|
|
{
|
|
const gchar *type_string = g_variant_get_type_string (value);
|
|
if (g_strcmp0 (type_string, info->signature) != 0)
|
|
{
|
|
g_warning ("Trying to get property %s with type %s but according to the expected "
|
|
"interface the type is %s",
|
|
property_name,
|
|
type_string,
|
|
info->signature);
|
|
value = NULL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
g_variant_ref (value);
|
|
|
|
out:
|
|
G_UNLOCK (properties_lock);
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_set_cached_property:
|
|
* @proxy: A #GDBusProxy
|
|
* @property_name: Property name.
|
|
* @value: (nullable): Value for the property or %NULL to remove it from the cache.
|
|
*
|
|
* If @value is not %NULL, sets the cached value for the property with
|
|
* name @property_name to the value in @value.
|
|
*
|
|
* If @value is %NULL, then the cached value is removed from the
|
|
* property cache.
|
|
*
|
|
* If @proxy has an expected interface (see
|
|
* #GDBusProxy:g-interface-info) and @property_name is referenced by
|
|
* it, then @value is checked against the type of the property.
|
|
*
|
|
* If the @value #GVariant is floating, it is consumed. This allows
|
|
* convenient 'inline' use of g_variant_new(), e.g.
|
|
* |[<!-- language="C" -->
|
|
* g_dbus_proxy_set_cached_property (proxy,
|
|
* "SomeProperty",
|
|
* g_variant_new ("(si)",
|
|
* "A String",
|
|
* 42));
|
|
* ]|
|
|
*
|
|
* Normally you will not need to use this method since @proxy
|
|
* is tracking changes using the
|
|
* `org.freedesktop.DBus.Properties.PropertiesChanged`
|
|
* D-Bus signal. However, for performance reasons an object may
|
|
* decide to not use this signal for some properties and instead
|
|
* use a proprietary out-of-band mechanism to transmit changes.
|
|
*
|
|
* As a concrete example, consider an object with a property
|
|
* `ChatroomParticipants` which is an array of strings. Instead of
|
|
* transmitting the same (long) array every time the property changes,
|
|
* it is more efficient to only transmit the delta using e.g. signals
|
|
* `ChatroomParticipantJoined(String name)` and
|
|
* `ChatroomParticipantParted(String name)`.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_dbus_proxy_set_cached_property (GDBusProxy *proxy,
|
|
const gchar *property_name,
|
|
GVariant *value)
|
|
{
|
|
const GDBusPropertyInfo *info;
|
|
|
|
g_return_if_fail (G_IS_DBUS_PROXY (proxy));
|
|
g_return_if_fail (property_name != NULL);
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
if (value != NULL)
|
|
{
|
|
info = lookup_property_info (proxy, property_name);
|
|
if (info != NULL)
|
|
{
|
|
if (g_strcmp0 (info->signature, g_variant_get_type_string (value)) != 0)
|
|
{
|
|
g_warning ("Trying to set property %s of type %s but according to the expected "
|
|
"interface the type is %s",
|
|
property_name,
|
|
g_variant_get_type_string (value),
|
|
info->signature);
|
|
goto out;
|
|
}
|
|
}
|
|
g_hash_table_insert (proxy->priv->properties,
|
|
g_strdup (property_name),
|
|
g_variant_ref_sink (value));
|
|
}
|
|
else
|
|
{
|
|
g_hash_table_remove (proxy->priv->properties, property_name);
|
|
}
|
|
|
|
out:
|
|
G_UNLOCK (properties_lock);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
on_signal_received (GDBusConnection *connection,
|
|
const gchar *sender_name,
|
|
const gchar *object_path,
|
|
const gchar *interface_name,
|
|
const gchar *signal_name,
|
|
GVariant *parameters,
|
|
gpointer user_data)
|
|
{
|
|
SignalSubscriptionData *data = user_data;
|
|
GDBusProxy *proxy;
|
|
|
|
G_LOCK (signal_subscription_lock);
|
|
proxy = data->proxy;
|
|
if (proxy == NULL)
|
|
{
|
|
G_UNLOCK (signal_subscription_lock);
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
g_object_ref (proxy);
|
|
G_UNLOCK (signal_subscription_lock);
|
|
}
|
|
|
|
if (!proxy->priv->initialized)
|
|
goto out;
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
if (proxy->priv->name_owner != NULL && g_strcmp0 (sender_name, proxy->priv->name_owner) != 0)
|
|
{
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
|
|
if (proxy->priv->expected_interface != NULL)
|
|
{
|
|
const GDBusSignalInfo *info;
|
|
info = g_dbus_interface_info_lookup_signal (proxy->priv->expected_interface, signal_name);
|
|
if (info != NULL)
|
|
{
|
|
GVariantType *expected_type;
|
|
expected_type = _g_dbus_compute_complete_signature (info->args);
|
|
if (!g_variant_type_equal (expected_type, g_variant_get_type (parameters)))
|
|
{
|
|
gchar *expected_type_string = g_variant_type_dup_string (expected_type);
|
|
g_warning ("Dropping signal %s of type %s since the type from the expected interface is %s",
|
|
info->name,
|
|
g_variant_get_type_string (parameters),
|
|
expected_type_string);
|
|
g_free (expected_type_string);
|
|
g_variant_type_free (expected_type);
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
g_variant_type_free (expected_type);
|
|
}
|
|
}
|
|
|
|
G_UNLOCK (properties_lock);
|
|
|
|
g_signal_emit (proxy,
|
|
signals[SIGNAL_SIGNAL],
|
|
0,
|
|
sender_name,
|
|
signal_name,
|
|
parameters);
|
|
|
|
out:
|
|
if (proxy != NULL)
|
|
g_object_unref (proxy);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
/* must hold properties_lock */
|
|
static void
|
|
insert_property_checked (GDBusProxy *proxy,
|
|
gchar *property_name,
|
|
GVariant *value)
|
|
{
|
|
if (proxy->priv->expected_interface != NULL)
|
|
{
|
|
const GDBusPropertyInfo *info;
|
|
info = g_dbus_interface_info_lookup_property (proxy->priv->expected_interface, property_name);
|
|
/* Only check known properties */
|
|
if (info != NULL)
|
|
{
|
|
/* Warn about properties with the wrong type */
|
|
if (g_strcmp0 (info->signature, g_variant_get_type_string (value)) != 0)
|
|
{
|
|
g_warning ("Received property %s with type %s does not match expected type "
|
|
"%s in the expected interface",
|
|
property_name,
|
|
g_variant_get_type_string (value),
|
|
info->signature);
|
|
goto invalid;
|
|
}
|
|
}
|
|
}
|
|
|
|
g_hash_table_insert (proxy->priv->properties,
|
|
property_name, /* adopts string */
|
|
value); /* adopts value */
|
|
|
|
return;
|
|
|
|
invalid:
|
|
g_variant_unref (value);
|
|
g_free (property_name);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
GDBusProxy *proxy;
|
|
gchar *prop_name;
|
|
} InvalidatedPropGetData;
|
|
|
|
static void
|
|
invalidated_property_get_cb (GDBusConnection *connection,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
InvalidatedPropGetData *data = user_data;
|
|
const gchar *invalidated_properties[] = {NULL};
|
|
GVariantBuilder builder;
|
|
GVariant *value = NULL;
|
|
GVariant *unpacked_value = NULL;
|
|
|
|
/* errors are fine, the other end could have disconnected */
|
|
value = g_dbus_connection_call_finish (connection, res, NULL);
|
|
if (value == NULL)
|
|
{
|
|
goto out;
|
|
}
|
|
|
|
if (!g_variant_is_of_type (value, G_VARIANT_TYPE ("(v)")))
|
|
{
|
|
g_warning ("Expected type '(v)' for Get() reply, got '%s'", g_variant_get_type_string (value));
|
|
goto out;
|
|
}
|
|
|
|
g_variant_get (value, "(v)", &unpacked_value);
|
|
|
|
/* synthesize the a{sv} in the PropertiesChanged signal */
|
|
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));
|
|
g_variant_builder_add (&builder, "{sv}", data->prop_name, unpacked_value);
|
|
|
|
G_LOCK (properties_lock);
|
|
insert_property_checked (data->proxy,
|
|
data->prop_name, /* adopts string */
|
|
unpacked_value); /* adopts value */
|
|
data->prop_name = NULL;
|
|
G_UNLOCK (properties_lock);
|
|
|
|
g_signal_emit (data->proxy,
|
|
signals[PROPERTIES_CHANGED_SIGNAL], 0,
|
|
g_variant_builder_end (&builder), /* consumed */
|
|
invalidated_properties);
|
|
|
|
|
|
out:
|
|
if (value != NULL)
|
|
g_variant_unref (value);
|
|
g_object_unref (data->proxy);
|
|
g_free (data->prop_name);
|
|
g_slice_free (InvalidatedPropGetData, data);
|
|
}
|
|
|
|
static void
|
|
on_properties_changed (GDBusConnection *connection,
|
|
const gchar *sender_name,
|
|
const gchar *object_path,
|
|
const gchar *interface_name,
|
|
const gchar *signal_name,
|
|
GVariant *parameters,
|
|
gpointer user_data)
|
|
{
|
|
SignalSubscriptionData *data = user_data;
|
|
gboolean emit_g_signal = FALSE;
|
|
GDBusProxy *proxy;
|
|
const gchar *interface_name_for_signal;
|
|
GVariant *changed_properties;
|
|
gchar **invalidated_properties;
|
|
GVariantIter iter;
|
|
gchar *key;
|
|
GVariant *value;
|
|
guint n;
|
|
|
|
changed_properties = NULL;
|
|
invalidated_properties = NULL;
|
|
|
|
G_LOCK (signal_subscription_lock);
|
|
proxy = data->proxy;
|
|
if (proxy == NULL)
|
|
{
|
|
G_UNLOCK (signal_subscription_lock);
|
|
goto out;
|
|
}
|
|
else
|
|
{
|
|
g_object_ref (proxy);
|
|
G_UNLOCK (signal_subscription_lock);
|
|
}
|
|
|
|
if (!proxy->priv->initialized)
|
|
goto out;
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
if (proxy->priv->name_owner != NULL && g_strcmp0 (sender_name, proxy->priv->name_owner) != 0)
|
|
{
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
|
|
if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(sa{sv}as)")))
|
|
{
|
|
g_warning ("Value for PropertiesChanged signal with type '%s' does not match '(sa{sv}as)'",
|
|
g_variant_get_type_string (parameters));
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
|
|
g_variant_get (parameters,
|
|
"(&s@a{sv}^a&s)",
|
|
&interface_name_for_signal,
|
|
&changed_properties,
|
|
&invalidated_properties);
|
|
|
|
if (g_strcmp0 (interface_name_for_signal, proxy->priv->interface_name) != 0)
|
|
{
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
|
|
g_variant_iter_init (&iter, changed_properties);
|
|
while (g_variant_iter_next (&iter, "{sv}", &key, &value))
|
|
{
|
|
insert_property_checked (proxy,
|
|
key, /* adopts string */
|
|
value); /* adopts value */
|
|
emit_g_signal = TRUE;
|
|
}
|
|
|
|
if (proxy->priv->flags & G_DBUS_PROXY_FLAGS_GET_INVALIDATED_PROPERTIES)
|
|
{
|
|
if (proxy->priv->name_owner != NULL)
|
|
{
|
|
for (n = 0; invalidated_properties[n] != NULL; n++)
|
|
{
|
|
InvalidatedPropGetData *data;
|
|
data = g_slice_new0 (InvalidatedPropGetData);
|
|
data->proxy = g_object_ref (proxy);
|
|
data->prop_name = g_strdup (invalidated_properties[n]);
|
|
g_dbus_connection_call (proxy->priv->connection,
|
|
proxy->priv->name_owner,
|
|
proxy->priv->object_path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"Get",
|
|
g_variant_new ("(ss)", proxy->priv->interface_name, data->prop_name),
|
|
G_VARIANT_TYPE ("(v)"),
|
|
G_DBUS_CALL_FLAGS_NONE,
|
|
-1, /* timeout */
|
|
NULL, /* GCancellable */
|
|
(GAsyncReadyCallback) invalidated_property_get_cb,
|
|
data);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
emit_g_signal = TRUE;
|
|
for (n = 0; invalidated_properties[n] != NULL; n++)
|
|
{
|
|
g_hash_table_remove (proxy->priv->properties, invalidated_properties[n]);
|
|
}
|
|
}
|
|
|
|
G_UNLOCK (properties_lock);
|
|
|
|
if (emit_g_signal)
|
|
{
|
|
g_signal_emit (proxy, signals[PROPERTIES_CHANGED_SIGNAL],
|
|
0,
|
|
changed_properties,
|
|
invalidated_properties);
|
|
}
|
|
|
|
out:
|
|
if (changed_properties != NULL)
|
|
g_variant_unref (changed_properties);
|
|
g_free (invalidated_properties);
|
|
if (proxy != NULL)
|
|
g_object_unref (proxy);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
process_get_all_reply (GDBusProxy *proxy,
|
|
GVariant *result)
|
|
{
|
|
GVariantIter *iter;
|
|
gchar *key;
|
|
GVariant *value;
|
|
guint num_properties;
|
|
|
|
if (!g_variant_is_of_type (result, G_VARIANT_TYPE ("(a{sv})")))
|
|
{
|
|
g_warning ("Value for GetAll reply with type '%s' does not match '(a{sv})'",
|
|
g_variant_get_type_string (result));
|
|
goto out;
|
|
}
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
g_variant_get (result, "(a{sv})", &iter);
|
|
while (g_variant_iter_next (iter, "{sv}", &key, &value))
|
|
{
|
|
insert_property_checked (proxy,
|
|
key, /* adopts string */
|
|
value); /* adopts value */
|
|
}
|
|
g_variant_iter_free (iter);
|
|
|
|
num_properties = g_hash_table_size (proxy->priv->properties);
|
|
G_UNLOCK (properties_lock);
|
|
|
|
/* Synthesize ::g-properties-changed changed */
|
|
if (num_properties > 0)
|
|
{
|
|
GVariant *changed_properties;
|
|
const gchar *invalidated_properties[1] = {NULL};
|
|
|
|
g_variant_get (result,
|
|
"(@a{sv})",
|
|
&changed_properties);
|
|
g_signal_emit (proxy, signals[PROPERTIES_CHANGED_SIGNAL],
|
|
0,
|
|
changed_properties,
|
|
invalidated_properties);
|
|
g_variant_unref (changed_properties);
|
|
}
|
|
|
|
out:
|
|
;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
GDBusProxy *proxy;
|
|
GCancellable *cancellable;
|
|
gchar *name_owner;
|
|
} LoadPropertiesOnNameOwnerChangedData;
|
|
|
|
static void
|
|
on_name_owner_changed_get_all_cb (GDBusConnection *connection,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
LoadPropertiesOnNameOwnerChangedData *data = user_data;
|
|
GVariant *result;
|
|
GError *error;
|
|
gboolean cancelled;
|
|
|
|
cancelled = FALSE;
|
|
|
|
error = NULL;
|
|
result = g_dbus_connection_call_finish (connection,
|
|
res,
|
|
&error);
|
|
if (result == NULL)
|
|
{
|
|
if (error->domain == G_IO_ERROR && error->code == G_IO_ERROR_CANCELLED)
|
|
cancelled = TRUE;
|
|
/* We just ignore if GetAll() is failing. Because this might happen
|
|
* if the object has no properties at all. Or if the caller is
|
|
* not authorized to see the properties.
|
|
*
|
|
* Either way, apps can know about this by using
|
|
* get_cached_property_names() or get_cached_property().
|
|
*
|
|
* TODO: handle G_DBUS_DEBUG flag 'proxy' and, if enabled, log the
|
|
* fact that GetAll() failed
|
|
*/
|
|
//g_debug ("error: %d %d %s", error->domain, error->code, error->message);
|
|
g_error_free (error);
|
|
}
|
|
|
|
/* and finally we can notify */
|
|
if (!cancelled)
|
|
{
|
|
G_LOCK (properties_lock);
|
|
g_free (data->proxy->priv->name_owner);
|
|
data->proxy->priv->name_owner = data->name_owner;
|
|
data->name_owner = NULL; /* to avoid an extra copy, we steal the string */
|
|
g_hash_table_remove_all (data->proxy->priv->properties);
|
|
G_UNLOCK (properties_lock);
|
|
if (result != NULL)
|
|
{
|
|
process_get_all_reply (data->proxy, result);
|
|
g_variant_unref (result);
|
|
}
|
|
|
|
g_object_notify (G_OBJECT (data->proxy), "g-name-owner");
|
|
}
|
|
|
|
if (data->cancellable == data->proxy->priv->get_all_cancellable)
|
|
data->proxy->priv->get_all_cancellable = NULL;
|
|
|
|
g_object_unref (data->proxy);
|
|
g_object_unref (data->cancellable);
|
|
g_free (data->name_owner);
|
|
g_free (data);
|
|
}
|
|
|
|
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)
|
|
{
|
|
SignalSubscriptionData *data = user_data;
|
|
GDBusProxy *proxy;
|
|
const gchar *old_owner;
|
|
const gchar *new_owner;
|
|
|
|
G_LOCK (signal_subscription_lock);
|
|
proxy = data->proxy;
|
|
if (proxy == NULL)
|
|
{
|
|
G_UNLOCK (signal_subscription_lock);
|
|
goto out;
|
|
}
|
|
else
|
|
{
|
|
g_object_ref (proxy);
|
|
G_UNLOCK (signal_subscription_lock);
|
|
}
|
|
|
|
/* if we are already trying to load properties, cancel that */
|
|
if (proxy->priv->get_all_cancellable != NULL)
|
|
{
|
|
g_cancellable_cancel (proxy->priv->get_all_cancellable);
|
|
proxy->priv->get_all_cancellable = NULL;
|
|
}
|
|
|
|
g_variant_get (parameters,
|
|
"(&s&s&s)",
|
|
NULL,
|
|
&old_owner,
|
|
&new_owner);
|
|
|
|
if (strlen (new_owner) == 0)
|
|
{
|
|
G_LOCK (properties_lock);
|
|
g_free (proxy->priv->name_owner);
|
|
proxy->priv->name_owner = NULL;
|
|
|
|
/* Synthesize ::g-properties-changed changed */
|
|
if (!(proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES) &&
|
|
g_hash_table_size (proxy->priv->properties) > 0)
|
|
{
|
|
GVariantBuilder builder;
|
|
GPtrArray *invalidated_properties;
|
|
GHashTableIter iter;
|
|
const gchar *key;
|
|
|
|
/* Build changed_properties (always empty) and invalidated_properties ... */
|
|
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));
|
|
|
|
invalidated_properties = g_ptr_array_new_with_free_func (g_free);
|
|
g_hash_table_iter_init (&iter, proxy->priv->properties);
|
|
while (g_hash_table_iter_next (&iter, (gpointer) &key, NULL))
|
|
g_ptr_array_add (invalidated_properties, g_strdup (key));
|
|
g_ptr_array_add (invalidated_properties, NULL);
|
|
|
|
/* ... throw out the properties ... */
|
|
g_hash_table_remove_all (proxy->priv->properties);
|
|
|
|
G_UNLOCK (properties_lock);
|
|
|
|
/* ... and finally emit the ::g-properties-changed signal */
|
|
g_signal_emit (proxy, signals[PROPERTIES_CHANGED_SIGNAL],
|
|
0,
|
|
g_variant_builder_end (&builder) /* consumed */,
|
|
(const gchar* const *) invalidated_properties->pdata);
|
|
g_ptr_array_unref (invalidated_properties);
|
|
}
|
|
else
|
|
{
|
|
G_UNLOCK (properties_lock);
|
|
}
|
|
g_object_notify (G_OBJECT (proxy), "g-name-owner");
|
|
}
|
|
else
|
|
{
|
|
G_LOCK (properties_lock);
|
|
|
|
/* ignore duplicates - this can happen when activating the service */
|
|
if (g_strcmp0 (new_owner, proxy->priv->name_owner) == 0)
|
|
{
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
|
|
if (proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES)
|
|
{
|
|
g_free (proxy->priv->name_owner);
|
|
proxy->priv->name_owner = g_strdup (new_owner);
|
|
|
|
g_hash_table_remove_all (proxy->priv->properties);
|
|
G_UNLOCK (properties_lock);
|
|
g_object_notify (G_OBJECT (proxy), "g-name-owner");
|
|
}
|
|
else
|
|
{
|
|
LoadPropertiesOnNameOwnerChangedData *data;
|
|
|
|
G_UNLOCK (properties_lock);
|
|
|
|
/* start loading properties.. only then emit notify::g-name-owner .. we
|
|
* need to be able to cancel this in the event another NameOwnerChanged
|
|
* signal suddenly happens
|
|
*/
|
|
|
|
g_assert (proxy->priv->get_all_cancellable == NULL);
|
|
proxy->priv->get_all_cancellable = g_cancellable_new ();
|
|
data = g_new0 (LoadPropertiesOnNameOwnerChangedData, 1);
|
|
data->proxy = g_object_ref (proxy);
|
|
data->cancellable = proxy->priv->get_all_cancellable;
|
|
data->name_owner = g_strdup (new_owner);
|
|
g_dbus_connection_call (proxy->priv->connection,
|
|
data->name_owner,
|
|
proxy->priv->object_path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
g_variant_new ("(s)", proxy->priv->interface_name),
|
|
G_VARIANT_TYPE ("(a{sv})"),
|
|
G_DBUS_CALL_FLAGS_NONE,
|
|
-1, /* timeout */
|
|
proxy->priv->get_all_cancellable,
|
|
(GAsyncReadyCallback) on_name_owner_changed_get_all_cb,
|
|
data);
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (proxy != NULL)
|
|
g_object_unref (proxy);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
async_init_get_all_cb (GDBusConnection *connection,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
GTask *task = user_data;
|
|
GVariant *result;
|
|
GError *error;
|
|
|
|
error = NULL;
|
|
result = g_dbus_connection_call_finish (connection,
|
|
res,
|
|
&error);
|
|
if (result == NULL)
|
|
{
|
|
/* We just ignore if GetAll() is failing. Because this might happen
|
|
* if the object has no properties at all. Or if the caller is
|
|
* not authorized to see the properties.
|
|
*
|
|
* Either way, apps can know about this by using
|
|
* get_cached_property_names() or get_cached_property().
|
|
*
|
|
* TODO: handle G_DBUS_DEBUG flag 'proxy' and, if enabled, log the
|
|
* fact that GetAll() failed
|
|
*/
|
|
//g_debug ("error: %d %d %s", error->domain, error->code, error->message);
|
|
g_error_free (error);
|
|
}
|
|
|
|
g_task_return_pointer (task, result,
|
|
(GDestroyNotify) g_variant_unref);
|
|
g_object_unref (task);
|
|
}
|
|
|
|
static void
|
|
async_init_data_set_name_owner (GTask *task,
|
|
const gchar *name_owner)
|
|
{
|
|
GDBusProxy *proxy = g_task_get_source_object (task);
|
|
gboolean get_all;
|
|
|
|
if (name_owner != NULL)
|
|
{
|
|
G_LOCK (properties_lock);
|
|
/* Must free first, since on_name_owner_changed() could run before us */
|
|
g_free (proxy->priv->name_owner);
|
|
proxy->priv->name_owner = g_strdup (name_owner);
|
|
G_UNLOCK (properties_lock);
|
|
}
|
|
|
|
get_all = TRUE;
|
|
|
|
if (proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES)
|
|
{
|
|
/* Don't load properties if the API user doesn't want them */
|
|
get_all = FALSE;
|
|
}
|
|
else if (name_owner == NULL && proxy->priv->name != NULL)
|
|
{
|
|
/* Don't attempt to load properties if the name_owner is NULL (which
|
|
* usually means the name isn't owned), unless name is also NULL (which
|
|
* means we actually wanted to talk to the directly-connected process -
|
|
* either dbus-daemon or a peer - instead of going via dbus-daemon)
|
|
*/
|
|
get_all = FALSE;
|
|
}
|
|
|
|
if (get_all)
|
|
{
|
|
/* load all properties asynchronously */
|
|
g_dbus_connection_call (proxy->priv->connection,
|
|
name_owner,
|
|
proxy->priv->object_path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
g_variant_new ("(s)", proxy->priv->interface_name),
|
|
G_VARIANT_TYPE ("(a{sv})"),
|
|
G_DBUS_CALL_FLAGS_NONE,
|
|
-1, /* timeout */
|
|
g_task_get_cancellable (task),
|
|
(GAsyncReadyCallback) async_init_get_all_cb,
|
|
task);
|
|
}
|
|
else
|
|
{
|
|
g_task_return_pointer (task, NULL, NULL);
|
|
g_object_unref (task);
|
|
}
|
|
}
|
|
|
|
static void
|
|
async_init_get_name_owner_cb (GDBusConnection *connection,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
GTask *task = user_data;
|
|
GError *error;
|
|
GVariant *result;
|
|
|
|
error = NULL;
|
|
result = g_dbus_connection_call_finish (connection,
|
|
res,
|
|
&error);
|
|
if (result == NULL)
|
|
{
|
|
if (error->domain == G_DBUS_ERROR &&
|
|
error->code == G_DBUS_ERROR_NAME_HAS_NO_OWNER)
|
|
{
|
|
g_error_free (error);
|
|
async_init_data_set_name_owner (task, NULL);
|
|
}
|
|
else
|
|
{
|
|
g_task_return_error (task, error);
|
|
g_object_unref (task);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* borrowed from result to avoid an extra copy */
|
|
const gchar *name_owner;
|
|
|
|
g_variant_get (result, "(&s)", &name_owner);
|
|
async_init_data_set_name_owner (task, name_owner);
|
|
g_variant_unref (result);
|
|
}
|
|
}
|
|
|
|
static void
|
|
async_init_call_get_name_owner (GTask *task)
|
|
{
|
|
GDBusProxy *proxy = g_task_get_source_object (task);
|
|
|
|
g_dbus_connection_call (proxy->priv->connection,
|
|
"org.freedesktop.DBus", /* name */
|
|
"/org/freedesktop/DBus", /* object path */
|
|
"org.freedesktop.DBus", /* interface */
|
|
"GetNameOwner",
|
|
g_variant_new ("(s)",
|
|
proxy->priv->name),
|
|
G_VARIANT_TYPE ("(s)"),
|
|
G_DBUS_CALL_FLAGS_NONE,
|
|
-1, /* timeout */
|
|
g_task_get_cancellable (task),
|
|
(GAsyncReadyCallback) async_init_get_name_owner_cb,
|
|
task);
|
|
}
|
|
|
|
static void
|
|
async_init_start_service_by_name_cb (GDBusConnection *connection,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
GTask *task = user_data;
|
|
GDBusProxy *proxy = g_task_get_source_object (task);
|
|
GError *error;
|
|
GVariant *result;
|
|
|
|
error = NULL;
|
|
result = g_dbus_connection_call_finish (connection,
|
|
res,
|
|
&error);
|
|
if (result == NULL)
|
|
{
|
|
/* Errors are not unexpected; the bus will reply e.g.
|
|
*
|
|
* org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.Epiphany2
|
|
* was not provided by any .service files
|
|
*
|
|
* or (see #677718)
|
|
*
|
|
* org.freedesktop.systemd1.Masked: Unit polkit.service is masked.
|
|
*
|
|
* This doesn't mean that the name doesn't have an owner, just
|
|
* that it's not provided by a .service file or can't currently
|
|
* be started.
|
|
*
|
|
* In particular, in both cases, it could be that a service
|
|
* owner will actually appear later. So instead of erroring out,
|
|
* we just proceed to invoke GetNameOwner() if dealing with the
|
|
* kind of errors above.
|
|
*/
|
|
if (error->domain == G_DBUS_ERROR && error->code == G_DBUS_ERROR_SERVICE_UNKNOWN)
|
|
{
|
|
g_error_free (error);
|
|
}
|
|
else
|
|
{
|
|
gchar *remote_error = g_dbus_error_get_remote_error (error);
|
|
if (g_strcmp0 (remote_error, "org.freedesktop.systemd1.Masked") == 0)
|
|
{
|
|
g_error_free (error);
|
|
g_free (remote_error);
|
|
}
|
|
else
|
|
{
|
|
g_prefix_error (&error,
|
|
_("Error calling StartServiceByName for %s: "),
|
|
proxy->priv->name);
|
|
g_free (remote_error);
|
|
goto failed;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
guint32 start_service_result;
|
|
g_variant_get (result,
|
|
"(u)",
|
|
&start_service_result);
|
|
g_variant_unref (result);
|
|
if (start_service_result == 1 || /* DBUS_START_REPLY_SUCCESS */
|
|
start_service_result == 2) /* DBUS_START_REPLY_ALREADY_RUNNING */
|
|
{
|
|
/* continue to invoke GetNameOwner() */
|
|
}
|
|
else
|
|
{
|
|
error = g_error_new (G_IO_ERROR,
|
|
G_IO_ERROR_FAILED,
|
|
_("Unexpected reply %d from StartServiceByName(\"%s\") method"),
|
|
start_service_result,
|
|
proxy->priv->name);
|
|
goto failed;
|
|
}
|
|
}
|
|
|
|
async_init_call_get_name_owner (task);
|
|
return;
|
|
|
|
failed:
|
|
g_warn_if_fail (error != NULL);
|
|
g_task_return_error (task, error);
|
|
g_object_unref (task);
|
|
}
|
|
|
|
static void
|
|
async_init_call_start_service_by_name (GTask *task)
|
|
{
|
|
GDBusProxy *proxy = g_task_get_source_object (task);
|
|
|
|
g_dbus_connection_call (proxy->priv->connection,
|
|
"org.freedesktop.DBus", /* name */
|
|
"/org/freedesktop/DBus", /* object path */
|
|
"org.freedesktop.DBus", /* interface */
|
|
"StartServiceByName",
|
|
g_variant_new ("(su)",
|
|
proxy->priv->name,
|
|
0),
|
|
G_VARIANT_TYPE ("(u)"),
|
|
G_DBUS_CALL_FLAGS_NONE,
|
|
-1, /* timeout */
|
|
g_task_get_cancellable (task),
|
|
(GAsyncReadyCallback) async_init_start_service_by_name_cb,
|
|
task);
|
|
}
|
|
|
|
static void
|
|
async_initable_init_second_async (GAsyncInitable *initable,
|
|
gint io_priority,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (initable);
|
|
GTask *task;
|
|
|
|
task = g_task_new (proxy, cancellable, callback, user_data);
|
|
g_task_set_source_tag (task, async_initable_init_second_async);
|
|
g_task_set_priority (task, io_priority);
|
|
|
|
/* Check name ownership asynchronously - possibly also start the service */
|
|
if (proxy->priv->name == NULL)
|
|
{
|
|
/* Do nothing */
|
|
async_init_data_set_name_owner (task, NULL);
|
|
}
|
|
else if (g_dbus_is_unique_name (proxy->priv->name))
|
|
{
|
|
async_init_data_set_name_owner (task, proxy->priv->name);
|
|
}
|
|
else
|
|
{
|
|
if ((proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START) ||
|
|
(proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START_AT_CONSTRUCTION))
|
|
{
|
|
async_init_call_get_name_owner (task);
|
|
}
|
|
else
|
|
{
|
|
async_init_call_start_service_by_name (task);
|
|
}
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
async_initable_init_second_finish (GAsyncInitable *initable,
|
|
GAsyncResult *res,
|
|
GError **error)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (initable);
|
|
GTask *task = G_TASK (res);
|
|
GVariant *result;
|
|
gboolean ret;
|
|
|
|
ret = !g_task_had_error (task);
|
|
|
|
result = g_task_propagate_pointer (task, error);
|
|
if (result != NULL)
|
|
{
|
|
process_get_all_reply (proxy, result);
|
|
g_variant_unref (result);
|
|
}
|
|
|
|
proxy->priv->initialized = TRUE;
|
|
return ret;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
async_initable_init_first (GAsyncInitable *initable)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (initable);
|
|
|
|
if (!(proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES))
|
|
{
|
|
/* subscribe to PropertiesChanged() */
|
|
proxy->priv->properties_changed_subscription_id =
|
|
g_dbus_connection_signal_subscribe (proxy->priv->connection,
|
|
proxy->priv->name,
|
|
"org.freedesktop.DBus.Properties",
|
|
"PropertiesChanged",
|
|
proxy->priv->object_path,
|
|
proxy->priv->interface_name,
|
|
G_DBUS_SIGNAL_FLAGS_NONE,
|
|
on_properties_changed,
|
|
signal_subscription_ref (proxy->priv->signal_subscription_data),
|
|
(GDestroyNotify) signal_subscription_unref);
|
|
}
|
|
|
|
if (!(proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS))
|
|
{
|
|
/* subscribe to all signals for the object */
|
|
proxy->priv->signals_subscription_id =
|
|
g_dbus_connection_signal_subscribe (proxy->priv->connection,
|
|
proxy->priv->name,
|
|
proxy->priv->interface_name,
|
|
NULL, /* member */
|
|
proxy->priv->object_path,
|
|
NULL, /* arg0 */
|
|
G_DBUS_SIGNAL_FLAGS_NONE,
|
|
on_signal_received,
|
|
signal_subscription_ref (proxy->priv->signal_subscription_data),
|
|
(GDestroyNotify) signal_subscription_unref);
|
|
}
|
|
|
|
if (proxy->priv->name != NULL && !g_dbus_is_unique_name (proxy->priv->name))
|
|
{
|
|
proxy->priv->name_owner_changed_subscription_id =
|
|
g_dbus_connection_signal_subscribe (proxy->priv->connection,
|
|
"org.freedesktop.DBus", /* name */
|
|
"org.freedesktop.DBus", /* interface */
|
|
"NameOwnerChanged", /* signal name */
|
|
"/org/freedesktop/DBus", /* path */
|
|
proxy->priv->name, /* arg0 */
|
|
G_DBUS_SIGNAL_FLAGS_NONE,
|
|
on_name_owner_changed,
|
|
signal_subscription_ref (proxy->priv->signal_subscription_data),
|
|
(GDestroyNotify) signal_subscription_unref);
|
|
}
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
/* initialization is split into two parts - the first is the
|
|
* non-blocking part that requires the callers GMainContext - the
|
|
* second is a blocking part async part that doesn't require the
|
|
* callers GMainContext.. we do this split so the code can be reused
|
|
* in the GInitable implementation below.
|
|
*
|
|
* Note that obtaining a GDBusConnection is not shared between the two
|
|
* paths.
|
|
*/
|
|
|
|
static void
|
|
init_second_async_cb (GObject *source_object,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
GTask *task = user_data;
|
|
GError *error = NULL;
|
|
|
|
if (async_initable_init_second_finish (G_ASYNC_INITABLE (source_object), res, &error))
|
|
g_task_return_boolean (task, TRUE);
|
|
else
|
|
g_task_return_error (task, error);
|
|
g_object_unref (task);
|
|
}
|
|
|
|
static void
|
|
get_connection_cb (GObject *source_object,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
GTask *task = user_data;
|
|
GDBusProxy *proxy = g_task_get_source_object (task);
|
|
GError *error;
|
|
|
|
error = NULL;
|
|
proxy->priv->connection = g_bus_get_finish (res, &error);
|
|
if (proxy->priv->connection == NULL)
|
|
{
|
|
g_task_return_error (task, error);
|
|
g_object_unref (task);
|
|
}
|
|
else
|
|
{
|
|
async_initable_init_first (G_ASYNC_INITABLE (proxy));
|
|
async_initable_init_second_async (G_ASYNC_INITABLE (proxy),
|
|
g_task_get_priority (task),
|
|
g_task_get_cancellable (task),
|
|
init_second_async_cb,
|
|
task);
|
|
}
|
|
}
|
|
|
|
static void
|
|
async_initable_init_async (GAsyncInitable *initable,
|
|
gint io_priority,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (initable);
|
|
GTask *task;
|
|
|
|
task = g_task_new (proxy, cancellable, callback, user_data);
|
|
g_task_set_source_tag (task, async_initable_init_async);
|
|
g_task_set_priority (task, io_priority);
|
|
|
|
if (proxy->priv->bus_type != G_BUS_TYPE_NONE)
|
|
{
|
|
g_assert (proxy->priv->connection == NULL);
|
|
|
|
g_bus_get (proxy->priv->bus_type,
|
|
cancellable,
|
|
get_connection_cb,
|
|
task);
|
|
}
|
|
else
|
|
{
|
|
async_initable_init_first (initable);
|
|
async_initable_init_second_async (initable, io_priority, cancellable,
|
|
init_second_async_cb, task);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
async_initable_init_finish (GAsyncInitable *initable,
|
|
GAsyncResult *res,
|
|
GError **error)
|
|
{
|
|
return g_task_propagate_boolean (G_TASK (res), error);
|
|
}
|
|
|
|
static void
|
|
async_initable_iface_init (GAsyncInitableIface *async_initable_iface)
|
|
{
|
|
async_initable_iface->init_async = async_initable_init_async;
|
|
async_initable_iface->init_finish = async_initable_init_finish;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
typedef struct
|
|
{
|
|
GMainContext *context;
|
|
GMainLoop *loop;
|
|
GAsyncResult *res;
|
|
} InitableAsyncInitableData;
|
|
|
|
static void
|
|
async_initable_init_async_cb (GObject *source_object,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
InitableAsyncInitableData *data = user_data;
|
|
data->res = g_object_ref (res);
|
|
g_main_loop_quit (data->loop);
|
|
}
|
|
|
|
/* Simply reuse the GAsyncInitable implementation but run the first
|
|
* part (that is non-blocking and requires the callers GMainContext)
|
|
* with the callers GMainContext.. and the second with a private
|
|
* GMainContext (bug 621310 is slightly related).
|
|
*
|
|
* Note that obtaining a GDBusConnection is not shared between the two
|
|
* paths.
|
|
*/
|
|
static gboolean
|
|
initable_init (GInitable *initable,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (initable);
|
|
InitableAsyncInitableData *data;
|
|
gboolean ret;
|
|
|
|
ret = FALSE;
|
|
|
|
if (proxy->priv->bus_type != G_BUS_TYPE_NONE)
|
|
{
|
|
g_assert (proxy->priv->connection == NULL);
|
|
proxy->priv->connection = g_bus_get_sync (proxy->priv->bus_type,
|
|
cancellable,
|
|
error);
|
|
if (proxy->priv->connection == NULL)
|
|
goto out;
|
|
}
|
|
|
|
async_initable_init_first (G_ASYNC_INITABLE (initable));
|
|
|
|
data = g_new0 (InitableAsyncInitableData, 1);
|
|
data->context = g_main_context_new ();
|
|
data->loop = g_main_loop_new (data->context, FALSE);
|
|
|
|
g_main_context_push_thread_default (data->context);
|
|
|
|
async_initable_init_second_async (G_ASYNC_INITABLE (initable),
|
|
G_PRIORITY_DEFAULT,
|
|
cancellable,
|
|
async_initable_init_async_cb,
|
|
data);
|
|
|
|
g_main_loop_run (data->loop);
|
|
|
|
ret = async_initable_init_second_finish (G_ASYNC_INITABLE (initable),
|
|
data->res,
|
|
error);
|
|
|
|
g_main_context_pop_thread_default (data->context);
|
|
|
|
g_main_context_unref (data->context);
|
|
g_main_loop_unref (data->loop);
|
|
g_object_unref (data->res);
|
|
g_free (data);
|
|
|
|
out:
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
initable_iface_init (GInitableIface *initable_iface)
|
|
{
|
|
initable_iface->init = initable_init;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
/**
|
|
* g_dbus_proxy_new:
|
|
* @connection: A #GDBusConnection.
|
|
* @flags: Flags used when constructing the proxy.
|
|
* @info: (nullable): A #GDBusInterfaceInfo specifying the minimal interface that @proxy conforms to or %NULL.
|
|
* @name: (nullable): A bus name (well-known or unique) or %NULL if @connection is not a message bus connection.
|
|
* @object_path: An object path.
|
|
* @interface_name: A D-Bus interface name.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @callback: Callback function to invoke when the proxy is ready.
|
|
* @user_data: User data to pass to @callback.
|
|
*
|
|
* Creates a proxy for accessing @interface_name on the remote object
|
|
* at @object_path owned by @name at @connection and asynchronously
|
|
* loads D-Bus properties unless the
|
|
* %G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES flag is used. Connect to
|
|
* the #GDBusProxy::g-properties-changed signal to get notified about
|
|
* property changes.
|
|
*
|
|
* If the %G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS flag is not set, also sets up
|
|
* match rules for signals. Connect to the #GDBusProxy::g-signal signal
|
|
* to handle signals from the remote object.
|
|
*
|
|
* If @name is a well-known name and the
|
|
* %G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START and %G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START_AT_CONSTRUCTION
|
|
* flags aren't set and no name owner currently exists, the message bus
|
|
* will be requested to launch a name owner for the name.
|
|
*
|
|
* This is a failable asynchronous constructor - when the proxy is
|
|
* ready, @callback will be invoked and you can use
|
|
* g_dbus_proxy_new_finish() to get the result.
|
|
*
|
|
* See g_dbus_proxy_new_sync() and for a synchronous version of this constructor.
|
|
*
|
|
* #GDBusProxy is used in this [example][gdbus-wellknown-proxy].
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_dbus_proxy_new (GDBusConnection *connection,
|
|
GDBusProxyFlags flags,
|
|
GDBusInterfaceInfo *info,
|
|
const gchar *name,
|
|
const gchar *object_path,
|
|
const gchar *interface_name,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
|
|
g_return_if_fail ((name == NULL && g_dbus_connection_get_unique_name (connection) == NULL) || g_dbus_is_name (name));
|
|
g_return_if_fail (g_variant_is_object_path (object_path));
|
|
g_return_if_fail (g_dbus_is_interface_name (interface_name));
|
|
|
|
g_async_initable_new_async (G_TYPE_DBUS_PROXY,
|
|
G_PRIORITY_DEFAULT,
|
|
cancellable,
|
|
callback,
|
|
user_data,
|
|
"g-flags", flags,
|
|
"g-interface-info", info,
|
|
"g-name", name,
|
|
"g-connection", connection,
|
|
"g-object-path", object_path,
|
|
"g-interface-name", interface_name,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_new_finish:
|
|
* @res: A #GAsyncResult obtained from the #GAsyncReadyCallback function passed to g_dbus_proxy_new().
|
|
* @error: Return location for error or %NULL.
|
|
*
|
|
* Finishes creating a #GDBusProxy.
|
|
*
|
|
* Returns: A #GDBusProxy or %NULL if @error is set. Free with g_object_unref().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GDBusProxy *
|
|
g_dbus_proxy_new_finish (GAsyncResult *res,
|
|
GError **error)
|
|
{
|
|
GObject *object;
|
|
GObject *source_object;
|
|
|
|
source_object = g_async_result_get_source_object (res);
|
|
g_assert (source_object != NULL);
|
|
|
|
object = g_async_initable_new_finish (G_ASYNC_INITABLE (source_object),
|
|
res,
|
|
error);
|
|
g_object_unref (source_object);
|
|
|
|
if (object != NULL)
|
|
return G_DBUS_PROXY (object);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_new_sync:
|
|
* @connection: A #GDBusConnection.
|
|
* @flags: Flags used when constructing the proxy.
|
|
* @info: (nullable): A #GDBusInterfaceInfo specifying the minimal interface that @proxy conforms to or %NULL.
|
|
* @name: (nullable): A bus name (well-known or unique) or %NULL if @connection is not a message bus connection.
|
|
* @object_path: An object path.
|
|
* @interface_name: A D-Bus interface name.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @error: (nullable): Return location for error or %NULL.
|
|
*
|
|
* Creates a proxy for accessing @interface_name on the remote object
|
|
* at @object_path owned by @name at @connection and synchronously
|
|
* loads D-Bus properties unless the
|
|
* %G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES flag is used.
|
|
*
|
|
* If the %G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS flag is not set, also sets up
|
|
* match rules for signals. Connect to the #GDBusProxy::g-signal signal
|
|
* to handle signals from the remote object.
|
|
*
|
|
* If @name is a well-known name and the
|
|
* %G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START and %G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START_AT_CONSTRUCTION
|
|
* flags aren't set and no name owner currently exists, the message bus
|
|
* will be requested to launch a name owner for the name.
|
|
*
|
|
* This is a synchronous failable constructor. See g_dbus_proxy_new()
|
|
* and g_dbus_proxy_new_finish() for the asynchronous version.
|
|
*
|
|
* #GDBusProxy is used in this [example][gdbus-wellknown-proxy].
|
|
*
|
|
* Returns: A #GDBusProxy or %NULL if error is set. Free with g_object_unref().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GDBusProxy *
|
|
g_dbus_proxy_new_sync (GDBusConnection *connection,
|
|
GDBusProxyFlags flags,
|
|
GDBusInterfaceInfo *info,
|
|
const gchar *name,
|
|
const gchar *object_path,
|
|
const gchar *interface_name,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
GInitable *initable;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), NULL);
|
|
g_return_val_if_fail ((name == NULL && g_dbus_connection_get_unique_name (connection) == NULL) ||
|
|
g_dbus_is_name (name), NULL);
|
|
g_return_val_if_fail (g_variant_is_object_path (object_path), NULL);
|
|
g_return_val_if_fail (g_dbus_is_interface_name (interface_name), NULL);
|
|
|
|
initable = g_initable_new (G_TYPE_DBUS_PROXY,
|
|
cancellable,
|
|
error,
|
|
"g-flags", flags,
|
|
"g-interface-info", info,
|
|
"g-name", name,
|
|
"g-connection", connection,
|
|
"g-object-path", object_path,
|
|
"g-interface-name", interface_name,
|
|
NULL);
|
|
if (initable != NULL)
|
|
return G_DBUS_PROXY (initable);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
/**
|
|
* g_dbus_proxy_new_for_bus:
|
|
* @bus_type: A #GBusType.
|
|
* @flags: Flags used when constructing the proxy.
|
|
* @info: (nullable): A #GDBusInterfaceInfo specifying the minimal interface that @proxy conforms to or %NULL.
|
|
* @name: A bus name (well-known or unique).
|
|
* @object_path: An object path.
|
|
* @interface_name: A D-Bus interface name.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @callback: Callback function to invoke when the proxy is ready.
|
|
* @user_data: User data to pass to @callback.
|
|
*
|
|
* Like g_dbus_proxy_new() but takes a #GBusType instead of a #GDBusConnection.
|
|
*
|
|
* #GDBusProxy is used in this [example][gdbus-wellknown-proxy].
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_dbus_proxy_new_for_bus (GBusType bus_type,
|
|
GDBusProxyFlags flags,
|
|
GDBusInterfaceInfo *info,
|
|
const gchar *name,
|
|
const gchar *object_path,
|
|
const gchar *interface_name,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
g_return_if_fail (g_dbus_is_name (name));
|
|
g_return_if_fail (g_variant_is_object_path (object_path));
|
|
g_return_if_fail (g_dbus_is_interface_name (interface_name));
|
|
|
|
g_async_initable_new_async (G_TYPE_DBUS_PROXY,
|
|
G_PRIORITY_DEFAULT,
|
|
cancellable,
|
|
callback,
|
|
user_data,
|
|
"g-flags", flags,
|
|
"g-interface-info", info,
|
|
"g-name", name,
|
|
"g-bus-type", bus_type,
|
|
"g-object-path", object_path,
|
|
"g-interface-name", interface_name,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_new_for_bus_finish:
|
|
* @res: A #GAsyncResult obtained from the #GAsyncReadyCallback function passed to g_dbus_proxy_new_for_bus().
|
|
* @error: Return location for error or %NULL.
|
|
*
|
|
* Finishes creating a #GDBusProxy.
|
|
*
|
|
* Returns: A #GDBusProxy or %NULL if @error is set. Free with g_object_unref().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GDBusProxy *
|
|
g_dbus_proxy_new_for_bus_finish (GAsyncResult *res,
|
|
GError **error)
|
|
{
|
|
return g_dbus_proxy_new_finish (res, error);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_new_for_bus_sync:
|
|
* @bus_type: A #GBusType.
|
|
* @flags: Flags used when constructing the proxy.
|
|
* @info: (nullable): A #GDBusInterfaceInfo specifying the minimal interface
|
|
* that @proxy conforms to or %NULL.
|
|
* @name: A bus name (well-known or unique).
|
|
* @object_path: An object path.
|
|
* @interface_name: A D-Bus interface name.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @error: Return location for error or %NULL.
|
|
*
|
|
* Like g_dbus_proxy_new_sync() but takes a #GBusType instead of a #GDBusConnection.
|
|
*
|
|
* #GDBusProxy is used in this [example][gdbus-wellknown-proxy].
|
|
*
|
|
* Returns: A #GDBusProxy or %NULL if error is set. Free with g_object_unref().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GDBusProxy *
|
|
g_dbus_proxy_new_for_bus_sync (GBusType bus_type,
|
|
GDBusProxyFlags flags,
|
|
GDBusInterfaceInfo *info,
|
|
const gchar *name,
|
|
const gchar *object_path,
|
|
const gchar *interface_name,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
GInitable *initable;
|
|
|
|
g_return_val_if_fail (g_dbus_is_name (name), NULL);
|
|
g_return_val_if_fail (g_variant_is_object_path (object_path), NULL);
|
|
g_return_val_if_fail (g_dbus_is_interface_name (interface_name), NULL);
|
|
|
|
initable = g_initable_new (G_TYPE_DBUS_PROXY,
|
|
cancellable,
|
|
error,
|
|
"g-flags", flags,
|
|
"g-interface-info", info,
|
|
"g-name", name,
|
|
"g-bus-type", bus_type,
|
|
"g-object-path", object_path,
|
|
"g-interface-name", interface_name,
|
|
NULL);
|
|
if (initable != NULL)
|
|
return G_DBUS_PROXY (initable);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
/**
|
|
* g_dbus_proxy_get_connection:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* Gets the connection @proxy is for.
|
|
*
|
|
* Returns: (transfer none): A #GDBusConnection owned by @proxy. Do not free.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GDBusConnection *
|
|
g_dbus_proxy_get_connection (GDBusProxy *proxy)
|
|
{
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
return proxy->priv->connection;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_flags:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* Gets the flags that @proxy was constructed with.
|
|
*
|
|
* Returns: Flags from the #GDBusProxyFlags enumeration.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GDBusProxyFlags
|
|
g_dbus_proxy_get_flags (GDBusProxy *proxy)
|
|
{
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), 0);
|
|
return proxy->priv->flags;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_name:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* Gets the name that @proxy was constructed for.
|
|
*
|
|
* Returns: A string owned by @proxy. Do not free.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
const gchar *
|
|
g_dbus_proxy_get_name (GDBusProxy *proxy)
|
|
{
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
return proxy->priv->name;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_name_owner:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* The unique name that owns the name that @proxy is for or %NULL if
|
|
* no-one currently owns that name. You may connect to the
|
|
* #GObject::notify signal to track changes to the
|
|
* #GDBusProxy:g-name-owner property.
|
|
*
|
|
* Returns: The name owner or %NULL if no name owner exists. Free with g_free().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gchar *
|
|
g_dbus_proxy_get_name_owner (GDBusProxy *proxy)
|
|
{
|
|
gchar *ret;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
|
|
G_LOCK (properties_lock);
|
|
ret = g_strdup (proxy->priv->name_owner);
|
|
G_UNLOCK (properties_lock);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_object_path:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* Gets the object path @proxy is for.
|
|
*
|
|
* Returns: A string owned by @proxy. Do not free.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
const gchar *
|
|
g_dbus_proxy_get_object_path (GDBusProxy *proxy)
|
|
{
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
return proxy->priv->object_path;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_interface_name:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* Gets the D-Bus interface name @proxy is for.
|
|
*
|
|
* Returns: A string owned by @proxy. Do not free.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
const gchar *
|
|
g_dbus_proxy_get_interface_name (GDBusProxy *proxy)
|
|
{
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
return proxy->priv->interface_name;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_default_timeout:
|
|
* @proxy: A #GDBusProxy.
|
|
*
|
|
* Gets the timeout to use if -1 (specifying default timeout) is
|
|
* passed as @timeout_msec in the g_dbus_proxy_call() and
|
|
* g_dbus_proxy_call_sync() functions.
|
|
*
|
|
* See the #GDBusProxy:g-default-timeout property for more details.
|
|
*
|
|
* Returns: Timeout to use for @proxy.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gint
|
|
g_dbus_proxy_get_default_timeout (GDBusProxy *proxy)
|
|
{
|
|
gint ret;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), -1);
|
|
|
|
G_LOCK (properties_lock);
|
|
ret = proxy->priv->timeout_msec;
|
|
G_UNLOCK (properties_lock);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_set_default_timeout:
|
|
* @proxy: A #GDBusProxy.
|
|
* @timeout_msec: Timeout in milliseconds.
|
|
*
|
|
* Sets the timeout to use if -1 (specifying default timeout) is
|
|
* passed as @timeout_msec in the g_dbus_proxy_call() and
|
|
* g_dbus_proxy_call_sync() functions.
|
|
*
|
|
* See the #GDBusProxy:g-default-timeout property for more details.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_dbus_proxy_set_default_timeout (GDBusProxy *proxy,
|
|
gint timeout_msec)
|
|
{
|
|
g_return_if_fail (G_IS_DBUS_PROXY (proxy));
|
|
g_return_if_fail (timeout_msec == -1 || timeout_msec >= 0);
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
if (proxy->priv->timeout_msec != timeout_msec)
|
|
{
|
|
proxy->priv->timeout_msec = timeout_msec;
|
|
G_UNLOCK (properties_lock);
|
|
|
|
g_object_notify (G_OBJECT (proxy), "g-default-timeout");
|
|
}
|
|
else
|
|
{
|
|
G_UNLOCK (properties_lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_get_interface_info:
|
|
* @proxy: A #GDBusProxy
|
|
*
|
|
* Returns the #GDBusInterfaceInfo, if any, specifying the interface
|
|
* that @proxy conforms to. See the #GDBusProxy:g-interface-info
|
|
* property for more details.
|
|
*
|
|
* Returns: A #GDBusInterfaceInfo or %NULL. Do not unref the returned
|
|
* object, it is owned by @proxy.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GDBusInterfaceInfo *
|
|
g_dbus_proxy_get_interface_info (GDBusProxy *proxy)
|
|
{
|
|
GDBusInterfaceInfo *ret;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
|
|
G_LOCK (properties_lock);
|
|
ret = proxy->priv->expected_interface;
|
|
G_UNLOCK (properties_lock);
|
|
/* FIXME: returning a borrowed ref with no guarantee that nobody will
|
|
* call g_dbus_proxy_set_interface_info() and make it invalid...
|
|
*/
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_set_interface_info:
|
|
* @proxy: A #GDBusProxy
|
|
* @info: (nullable): Minimum interface this proxy conforms to or %NULL to unset.
|
|
*
|
|
* Ensure that interactions with @proxy conform to the given
|
|
* interface. See the #GDBusProxy:g-interface-info property for more
|
|
* details.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_dbus_proxy_set_interface_info (GDBusProxy *proxy,
|
|
GDBusInterfaceInfo *info)
|
|
{
|
|
g_return_if_fail (G_IS_DBUS_PROXY (proxy));
|
|
G_LOCK (properties_lock);
|
|
|
|
if (proxy->priv->expected_interface != NULL)
|
|
{
|
|
g_dbus_interface_info_cache_release (proxy->priv->expected_interface);
|
|
g_dbus_interface_info_unref (proxy->priv->expected_interface);
|
|
}
|
|
proxy->priv->expected_interface = info != NULL ? g_dbus_interface_info_ref (info) : NULL;
|
|
if (proxy->priv->expected_interface != NULL)
|
|
g_dbus_interface_info_cache_build (proxy->priv->expected_interface);
|
|
|
|
G_UNLOCK (properties_lock);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static gboolean
|
|
maybe_split_method_name (const gchar *method_name,
|
|
gchar **out_interface_name,
|
|
const gchar **out_method_name)
|
|
{
|
|
gboolean was_split;
|
|
|
|
was_split = FALSE;
|
|
g_assert (out_interface_name != NULL);
|
|
g_assert (out_method_name != NULL);
|
|
*out_interface_name = NULL;
|
|
*out_method_name = NULL;
|
|
|
|
if (strchr (method_name, '.') != NULL)
|
|
{
|
|
gchar *p;
|
|
gchar *last_dot;
|
|
|
|
p = g_strdup (method_name);
|
|
last_dot = strrchr (p, '.');
|
|
*last_dot = '\0';
|
|
|
|
*out_interface_name = p;
|
|
*out_method_name = last_dot + 1;
|
|
|
|
was_split = TRUE;
|
|
}
|
|
|
|
return was_split;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
GVariant *value;
|
|
#ifdef G_OS_UNIX
|
|
GUnixFDList *fd_list;
|
|
#endif
|
|
} ReplyData;
|
|
|
|
static void
|
|
reply_data_free (ReplyData *data)
|
|
{
|
|
g_variant_unref (data->value);
|
|
#ifdef G_OS_UNIX
|
|
if (data->fd_list != NULL)
|
|
g_object_unref (data->fd_list);
|
|
#endif
|
|
g_slice_free (ReplyData, data);
|
|
}
|
|
|
|
static void
|
|
reply_cb (GDBusConnection *connection,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
GTask *task = user_data;
|
|
GVariant *value;
|
|
GError *error;
|
|
#ifdef G_OS_UNIX
|
|
GUnixFDList *fd_list;
|
|
#endif
|
|
|
|
error = NULL;
|
|
#ifdef G_OS_UNIX
|
|
value = g_dbus_connection_call_with_unix_fd_list_finish (connection,
|
|
&fd_list,
|
|
res,
|
|
&error);
|
|
#else
|
|
value = g_dbus_connection_call_finish (connection,
|
|
res,
|
|
&error);
|
|
#endif
|
|
if (error != NULL)
|
|
{
|
|
g_task_return_error (task, error);
|
|
}
|
|
else
|
|
{
|
|
ReplyData *data;
|
|
data = g_slice_new0 (ReplyData);
|
|
data->value = value;
|
|
#ifdef G_OS_UNIX
|
|
data->fd_list = fd_list;
|
|
#endif
|
|
g_task_return_pointer (task, data, (GDestroyNotify) reply_data_free);
|
|
}
|
|
|
|
g_object_unref (task);
|
|
}
|
|
|
|
/* properties_lock must be held for as long as you will keep the
|
|
* returned value
|
|
*/
|
|
static const GDBusMethodInfo *
|
|
lookup_method_info (GDBusProxy *proxy,
|
|
const gchar *method_name)
|
|
{
|
|
const GDBusMethodInfo *info = NULL;
|
|
|
|
if (proxy->priv->expected_interface == NULL)
|
|
goto out;
|
|
|
|
info = g_dbus_interface_info_lookup_method (proxy->priv->expected_interface, method_name);
|
|
|
|
out:
|
|
return info;
|
|
}
|
|
|
|
/* properties_lock must be held for as long as you will keep the
|
|
* returned value
|
|
*/
|
|
static const gchar *
|
|
get_destination_for_call (GDBusProxy *proxy)
|
|
{
|
|
const gchar *ret;
|
|
|
|
ret = NULL;
|
|
|
|
/* If proxy->priv->name is a unique name, then proxy->priv->name_owner
|
|
* is never NULL and always the same as proxy->priv->name. We use this
|
|
* knowledge to avoid checking if proxy->priv->name is a unique or
|
|
* well-known name.
|
|
*/
|
|
ret = proxy->priv->name_owner;
|
|
if (ret != NULL)
|
|
goto out;
|
|
|
|
if (proxy->priv->flags & G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START)
|
|
goto out;
|
|
|
|
ret = proxy->priv->name;
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
g_dbus_proxy_call_internal (GDBusProxy *proxy,
|
|
const gchar *method_name,
|
|
GVariant *parameters,
|
|
GDBusCallFlags flags,
|
|
gint timeout_msec,
|
|
GUnixFDList *fd_list,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
GTask *task;
|
|
gboolean was_split;
|
|
gchar *split_interface_name;
|
|
const gchar *split_method_name;
|
|
const gchar *target_method_name;
|
|
const gchar *target_interface_name;
|
|
gchar *destination;
|
|
GVariantType *reply_type;
|
|
GAsyncReadyCallback my_callback;
|
|
|
|
g_return_if_fail (G_IS_DBUS_PROXY (proxy));
|
|
g_return_if_fail (g_dbus_is_member_name (method_name) || g_dbus_is_interface_name (method_name));
|
|
g_return_if_fail (parameters == NULL || g_variant_is_of_type (parameters, G_VARIANT_TYPE_TUPLE));
|
|
g_return_if_fail (timeout_msec == -1 || timeout_msec >= 0);
|
|
#ifdef G_OS_UNIX
|
|
g_return_if_fail (fd_list == NULL || G_IS_UNIX_FD_LIST (fd_list));
|
|
#else
|
|
g_return_if_fail (fd_list == NULL);
|
|
#endif
|
|
|
|
reply_type = NULL;
|
|
split_interface_name = NULL;
|
|
|
|
/* g_dbus_connection_call() is optimised for the case of a NULL
|
|
* callback. If we get a NULL callback from our user then make sure
|
|
* we pass along a NULL callback for ourselves as well.
|
|
*/
|
|
if (callback != NULL)
|
|
{
|
|
my_callback = (GAsyncReadyCallback) reply_cb;
|
|
task = g_task_new (proxy, cancellable, callback, user_data);
|
|
g_task_set_source_tag (task, g_dbus_proxy_call_internal);
|
|
}
|
|
else
|
|
{
|
|
my_callback = NULL;
|
|
task = NULL;
|
|
}
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
was_split = maybe_split_method_name (method_name, &split_interface_name, &split_method_name);
|
|
target_method_name = was_split ? split_method_name : method_name;
|
|
target_interface_name = was_split ? split_interface_name : proxy->priv->interface_name;
|
|
|
|
/* Warn if method is unexpected (cf. :g-interface-info) */
|
|
if (!was_split)
|
|
{
|
|
const GDBusMethodInfo *expected_method_info;
|
|
expected_method_info = lookup_method_info (proxy, target_method_name);
|
|
if (expected_method_info != NULL)
|
|
reply_type = _g_dbus_compute_complete_signature (expected_method_info->out_args);
|
|
}
|
|
|
|
destination = NULL;
|
|
if (proxy->priv->name != NULL)
|
|
{
|
|
destination = g_strdup (get_destination_for_call (proxy));
|
|
if (destination == NULL)
|
|
{
|
|
if (task != NULL)
|
|
{
|
|
g_task_return_new_error (task,
|
|
G_IO_ERROR,
|
|
G_IO_ERROR_FAILED,
|
|
_("Cannot invoke method; proxy is for a well-known name without an owner and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag"));
|
|
g_object_unref (task);
|
|
}
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
G_UNLOCK (properties_lock);
|
|
|
|
#ifdef G_OS_UNIX
|
|
g_dbus_connection_call_with_unix_fd_list (proxy->priv->connection,
|
|
destination,
|
|
proxy->priv->object_path,
|
|
target_interface_name,
|
|
target_method_name,
|
|
parameters,
|
|
reply_type,
|
|
flags,
|
|
timeout_msec == -1 ? proxy->priv->timeout_msec : timeout_msec,
|
|
fd_list,
|
|
cancellable,
|
|
my_callback,
|
|
task);
|
|
#else
|
|
g_dbus_connection_call (proxy->priv->connection,
|
|
destination,
|
|
proxy->priv->object_path,
|
|
target_interface_name,
|
|
target_method_name,
|
|
parameters,
|
|
reply_type,
|
|
flags,
|
|
timeout_msec == -1 ? proxy->priv->timeout_msec : timeout_msec,
|
|
cancellable,
|
|
my_callback,
|
|
task);
|
|
#endif
|
|
|
|
out:
|
|
if (reply_type != NULL)
|
|
g_variant_type_free (reply_type);
|
|
|
|
g_free (destination);
|
|
g_free (split_interface_name);
|
|
}
|
|
|
|
static GVariant *
|
|
g_dbus_proxy_call_finish_internal (GDBusProxy *proxy,
|
|
GUnixFDList **out_fd_list,
|
|
GAsyncResult *res,
|
|
GError **error)
|
|
{
|
|
GVariant *value;
|
|
ReplyData *data;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
g_return_val_if_fail (g_task_is_valid (res, proxy), NULL);
|
|
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
|
|
|
|
value = NULL;
|
|
|
|
data = g_task_propagate_pointer (G_TASK (res), error);
|
|
if (!data)
|
|
goto out;
|
|
|
|
value = g_variant_ref (data->value);
|
|
#ifdef G_OS_UNIX
|
|
if (out_fd_list != NULL)
|
|
*out_fd_list = data->fd_list != NULL ? g_object_ref (data->fd_list) : NULL;
|
|
#endif
|
|
reply_data_free (data);
|
|
|
|
out:
|
|
return value;
|
|
}
|
|
|
|
static GVariant *
|
|
g_dbus_proxy_call_sync_internal (GDBusProxy *proxy,
|
|
const gchar *method_name,
|
|
GVariant *parameters,
|
|
GDBusCallFlags flags,
|
|
gint timeout_msec,
|
|
GUnixFDList *fd_list,
|
|
GUnixFDList **out_fd_list,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
GVariant *ret;
|
|
gboolean was_split;
|
|
gchar *split_interface_name;
|
|
const gchar *split_method_name;
|
|
const gchar *target_method_name;
|
|
const gchar *target_interface_name;
|
|
gchar *destination;
|
|
GVariantType *reply_type;
|
|
|
|
g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), NULL);
|
|
g_return_val_if_fail (g_dbus_is_member_name (method_name) || g_dbus_is_interface_name (method_name), NULL);
|
|
g_return_val_if_fail (parameters == NULL || g_variant_is_of_type (parameters, G_VARIANT_TYPE_TUPLE), NULL);
|
|
g_return_val_if_fail (timeout_msec == -1 || timeout_msec >= 0, NULL);
|
|
#ifdef G_OS_UNIX
|
|
g_return_val_if_fail (fd_list == NULL || G_IS_UNIX_FD_LIST (fd_list), NULL);
|
|
#else
|
|
g_return_val_if_fail (fd_list == NULL, NULL);
|
|
#endif
|
|
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
|
|
|
|
reply_type = NULL;
|
|
|
|
G_LOCK (properties_lock);
|
|
|
|
was_split = maybe_split_method_name (method_name, &split_interface_name, &split_method_name);
|
|
target_method_name = was_split ? split_method_name : method_name;
|
|
target_interface_name = was_split ? split_interface_name : proxy->priv->interface_name;
|
|
|
|
/* Warn if method is unexpected (cf. :g-interface-info) */
|
|
if (!was_split)
|
|
{
|
|
const GDBusMethodInfo *expected_method_info;
|
|
expected_method_info = lookup_method_info (proxy, target_method_name);
|
|
if (expected_method_info != NULL)
|
|
reply_type = _g_dbus_compute_complete_signature (expected_method_info->out_args);
|
|
}
|
|
|
|
destination = NULL;
|
|
if (proxy->priv->name != NULL)
|
|
{
|
|
destination = g_strdup (get_destination_for_call (proxy));
|
|
if (destination == NULL)
|
|
{
|
|
g_set_error_literal (error,
|
|
G_IO_ERROR,
|
|
G_IO_ERROR_FAILED,
|
|
_("Cannot invoke method; proxy is for a well-known name without an owner and proxy was constructed with the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag"));
|
|
ret = NULL;
|
|
G_UNLOCK (properties_lock);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
G_UNLOCK (properties_lock);
|
|
|
|
#ifdef G_OS_UNIX
|
|
ret = g_dbus_connection_call_with_unix_fd_list_sync (proxy->priv->connection,
|
|
destination,
|
|
proxy->priv->object_path,
|
|
target_interface_name,
|
|
target_method_name,
|
|
parameters,
|
|
reply_type,
|
|
flags,
|
|
timeout_msec == -1 ? proxy->priv->timeout_msec : timeout_msec,
|
|
fd_list,
|
|
out_fd_list,
|
|
cancellable,
|
|
error);
|
|
#else
|
|
ret = g_dbus_connection_call_sync (proxy->priv->connection,
|
|
destination,
|
|
proxy->priv->object_path,
|
|
target_interface_name,
|
|
target_method_name,
|
|
parameters,
|
|
reply_type,
|
|
flags,
|
|
timeout_msec == -1 ? proxy->priv->timeout_msec : timeout_msec,
|
|
cancellable,
|
|
error);
|
|
#endif
|
|
|
|
out:
|
|
if (reply_type != NULL)
|
|
g_variant_type_free (reply_type);
|
|
|
|
g_free (destination);
|
|
g_free (split_interface_name);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
/**
|
|
* g_dbus_proxy_call:
|
|
* @proxy: A #GDBusProxy.
|
|
* @method_name: Name of method to invoke.
|
|
* @parameters: (nullable): A #GVariant tuple with parameters for the signal or %NULL if not passing parameters.
|
|
* @flags: Flags from the #GDBusCallFlags enumeration.
|
|
* @timeout_msec: The timeout in milliseconds (with %G_MAXINT meaning
|
|
* "infinite") or -1 to use the proxy default timeout.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @callback: (nullable): A #GAsyncReadyCallback to call when the request is satisfied or %NULL if you don't
|
|
* care about the result of the method invocation.
|
|
* @user_data: The data to pass to @callback.
|
|
*
|
|
* Asynchronously invokes the @method_name method on @proxy.
|
|
*
|
|
* If @method_name contains any dots, then @name is split into interface and
|
|
* method name parts. This allows using @proxy for invoking methods on
|
|
* other interfaces.
|
|
*
|
|
* If the #GDBusConnection associated with @proxy is closed then
|
|
* the operation will fail with %G_IO_ERROR_CLOSED. If
|
|
* @cancellable is canceled, the operation will fail with
|
|
* %G_IO_ERROR_CANCELLED. If @parameters contains a value not
|
|
* compatible with the D-Bus protocol, the operation fails with
|
|
* %G_IO_ERROR_INVALID_ARGUMENT.
|
|
*
|
|
* If the @parameters #GVariant is floating, it is consumed. This allows
|
|
* convenient 'inline' use of g_variant_new(), e.g.:
|
|
* |[<!-- language="C" -->
|
|
* g_dbus_proxy_call (proxy,
|
|
* "TwoStrings",
|
|
* g_variant_new ("(ss)",
|
|
* "Thing One",
|
|
* "Thing Two"),
|
|
* G_DBUS_CALL_FLAGS_NONE,
|
|
* -1,
|
|
* NULL,
|
|
* (GAsyncReadyCallback) two_strings_done,
|
|
* &data);
|
|
* ]|
|
|
*
|
|
* If @proxy has an expected interface (see
|
|
* #GDBusProxy:g-interface-info) and @method_name is referenced by it,
|
|
* then the return value is checked against the return type.
|
|
*
|
|
* This is an asynchronous method. When the operation is finished,
|
|
* @callback will be invoked in the
|
|
* [thread-default main context][g-main-context-push-thread-default]
|
|
* of the thread you are calling this method from.
|
|
* You can then call g_dbus_proxy_call_finish() to get the result of
|
|
* the operation. See g_dbus_proxy_call_sync() for the synchronous
|
|
* version of this method.
|
|
*
|
|
* If @callback is %NULL then the D-Bus method call message will be sent with
|
|
* the %G_DBUS_MESSAGE_FLAGS_NO_REPLY_EXPECTED flag set.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_dbus_proxy_call (GDBusProxy *proxy,
|
|
const gchar *method_name,
|
|
GVariant *parameters,
|
|
GDBusCallFlags flags,
|
|
gint timeout_msec,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
g_dbus_proxy_call_internal (proxy, method_name, parameters, flags, timeout_msec, NULL, cancellable, callback, user_data);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_call_finish:
|
|
* @proxy: A #GDBusProxy.
|
|
* @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to g_dbus_proxy_call().
|
|
* @error: Return location for error or %NULL.
|
|
*
|
|
* Finishes an operation started with g_dbus_proxy_call().
|
|
*
|
|
* Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
|
|
* return values. Free with g_variant_unref().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GVariant *
|
|
g_dbus_proxy_call_finish (GDBusProxy *proxy,
|
|
GAsyncResult *res,
|
|
GError **error)
|
|
{
|
|
return g_dbus_proxy_call_finish_internal (proxy, NULL, res, error);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_call_sync:
|
|
* @proxy: A #GDBusProxy.
|
|
* @method_name: Name of method to invoke.
|
|
* @parameters: (nullable): A #GVariant tuple with parameters for the signal
|
|
* or %NULL if not passing parameters.
|
|
* @flags: Flags from the #GDBusCallFlags enumeration.
|
|
* @timeout_msec: The timeout in milliseconds (with %G_MAXINT meaning
|
|
* "infinite") or -1 to use the proxy default timeout.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @error: Return location for error or %NULL.
|
|
*
|
|
* Synchronously invokes the @method_name method on @proxy.
|
|
*
|
|
* If @method_name contains any dots, then @name is split into interface and
|
|
* method name parts. This allows using @proxy for invoking methods on
|
|
* other interfaces.
|
|
*
|
|
* If the #GDBusConnection associated with @proxy is disconnected then
|
|
* the operation will fail with %G_IO_ERROR_CLOSED. If
|
|
* @cancellable is canceled, the operation will fail with
|
|
* %G_IO_ERROR_CANCELLED. If @parameters contains a value not
|
|
* compatible with the D-Bus protocol, the operation fails with
|
|
* %G_IO_ERROR_INVALID_ARGUMENT.
|
|
*
|
|
* If the @parameters #GVariant is floating, it is consumed. This allows
|
|
* convenient 'inline' use of g_variant_new(), e.g.:
|
|
* |[<!-- language="C" -->
|
|
* g_dbus_proxy_call_sync (proxy,
|
|
* "TwoStrings",
|
|
* g_variant_new ("(ss)",
|
|
* "Thing One",
|
|
* "Thing Two"),
|
|
* G_DBUS_CALL_FLAGS_NONE,
|
|
* -1,
|
|
* NULL,
|
|
* &error);
|
|
* ]|
|
|
*
|
|
* The calling thread is blocked until a reply is received. See
|
|
* g_dbus_proxy_call() for the asynchronous version of this
|
|
* method.
|
|
*
|
|
* If @proxy has an expected interface (see
|
|
* #GDBusProxy:g-interface-info) and @method_name is referenced by it,
|
|
* then the return value is checked against the return type.
|
|
*
|
|
* Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
|
|
* return values. Free with g_variant_unref().
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GVariant *
|
|
g_dbus_proxy_call_sync (GDBusProxy *proxy,
|
|
const gchar *method_name,
|
|
GVariant *parameters,
|
|
GDBusCallFlags flags,
|
|
gint timeout_msec,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
return g_dbus_proxy_call_sync_internal (proxy, method_name, parameters, flags, timeout_msec, NULL, NULL, cancellable, error);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
#ifdef G_OS_UNIX
|
|
|
|
/**
|
|
* g_dbus_proxy_call_with_unix_fd_list:
|
|
* @proxy: A #GDBusProxy.
|
|
* @method_name: Name of method to invoke.
|
|
* @parameters: (nullable): A #GVariant tuple with parameters for the signal or %NULL if not passing parameters.
|
|
* @flags: Flags from the #GDBusCallFlags enumeration.
|
|
* @timeout_msec: The timeout in milliseconds (with %G_MAXINT meaning
|
|
* "infinite") or -1 to use the proxy default timeout.
|
|
* @fd_list: (nullable): A #GUnixFDList or %NULL.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @callback: (nullable): A #GAsyncReadyCallback to call when the request is satisfied or %NULL if you don't
|
|
* care about the result of the method invocation.
|
|
* @user_data: The data to pass to @callback.
|
|
*
|
|
* Like g_dbus_proxy_call() but also takes a #GUnixFDList object.
|
|
*
|
|
* This method is only available on UNIX.
|
|
*
|
|
* Since: 2.30
|
|
*/
|
|
void
|
|
g_dbus_proxy_call_with_unix_fd_list (GDBusProxy *proxy,
|
|
const gchar *method_name,
|
|
GVariant *parameters,
|
|
GDBusCallFlags flags,
|
|
gint timeout_msec,
|
|
GUnixFDList *fd_list,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
g_dbus_proxy_call_internal (proxy, method_name, parameters, flags, timeout_msec, fd_list, cancellable, callback, user_data);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_call_with_unix_fd_list_finish:
|
|
* @proxy: A #GDBusProxy.
|
|
* @out_fd_list: (out) (optional): Return location for a #GUnixFDList or %NULL.
|
|
* @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to g_dbus_proxy_call_with_unix_fd_list().
|
|
* @error: Return location for error or %NULL.
|
|
*
|
|
* Finishes an operation started with g_dbus_proxy_call_with_unix_fd_list().
|
|
*
|
|
* Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
|
|
* return values. Free with g_variant_unref().
|
|
*
|
|
* Since: 2.30
|
|
*/
|
|
GVariant *
|
|
g_dbus_proxy_call_with_unix_fd_list_finish (GDBusProxy *proxy,
|
|
GUnixFDList **out_fd_list,
|
|
GAsyncResult *res,
|
|
GError **error)
|
|
{
|
|
return g_dbus_proxy_call_finish_internal (proxy, out_fd_list, res, error);
|
|
}
|
|
|
|
/**
|
|
* g_dbus_proxy_call_with_unix_fd_list_sync:
|
|
* @proxy: A #GDBusProxy.
|
|
* @method_name: Name of method to invoke.
|
|
* @parameters: (nullable): A #GVariant tuple with parameters for the signal
|
|
* or %NULL if not passing parameters.
|
|
* @flags: Flags from the #GDBusCallFlags enumeration.
|
|
* @timeout_msec: The timeout in milliseconds (with %G_MAXINT meaning
|
|
* "infinite") or -1 to use the proxy default timeout.
|
|
* @fd_list: (nullable): A #GUnixFDList or %NULL.
|
|
* @out_fd_list: (out) (optional): Return location for a #GUnixFDList or %NULL.
|
|
* @cancellable: (nullable): A #GCancellable or %NULL.
|
|
* @error: Return location for error or %NULL.
|
|
*
|
|
* Like g_dbus_proxy_call_sync() but also takes and returns #GUnixFDList objects.
|
|
*
|
|
* This method is only available on UNIX.
|
|
*
|
|
* Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
|
|
* return values. Free with g_variant_unref().
|
|
*
|
|
* Since: 2.30
|
|
*/
|
|
GVariant *
|
|
g_dbus_proxy_call_with_unix_fd_list_sync (GDBusProxy *proxy,
|
|
const gchar *method_name,
|
|
GVariant *parameters,
|
|
GDBusCallFlags flags,
|
|
gint timeout_msec,
|
|
GUnixFDList *fd_list,
|
|
GUnixFDList **out_fd_list,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
return g_dbus_proxy_call_sync_internal (proxy, method_name, parameters, flags, timeout_msec, fd_list, out_fd_list, cancellable, error);
|
|
}
|
|
|
|
#endif /* G_OS_UNIX */
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|
|
|
|
static GDBusInterfaceInfo *
|
|
_g_dbus_proxy_get_info (GDBusInterface *interface)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (interface);
|
|
return g_dbus_proxy_get_interface_info (proxy);
|
|
}
|
|
|
|
static GDBusObject *
|
|
_g_dbus_proxy_get_object (GDBusInterface *interface)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (interface);
|
|
return proxy->priv->object;
|
|
}
|
|
|
|
static GDBusObject *
|
|
_g_dbus_proxy_dup_object (GDBusInterface *interface)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (interface);
|
|
GDBusObject *ret = NULL;
|
|
|
|
G_LOCK (properties_lock);
|
|
if (proxy->priv->object != NULL)
|
|
ret = g_object_ref (proxy->priv->object);
|
|
G_UNLOCK (properties_lock);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
_g_dbus_proxy_set_object (GDBusInterface *interface,
|
|
GDBusObject *object)
|
|
{
|
|
GDBusProxy *proxy = G_DBUS_PROXY (interface);
|
|
G_LOCK (properties_lock);
|
|
if (proxy->priv->object != NULL)
|
|
g_object_remove_weak_pointer (G_OBJECT (proxy->priv->object), (gpointer *) &proxy->priv->object);
|
|
proxy->priv->object = object;
|
|
if (proxy->priv->object != NULL)
|
|
g_object_add_weak_pointer (G_OBJECT (proxy->priv->object), (gpointer *) &proxy->priv->object);
|
|
G_UNLOCK (properties_lock);
|
|
}
|
|
|
|
static void
|
|
dbus_interface_iface_init (GDBusInterfaceIface *dbus_interface_iface)
|
|
{
|
|
dbus_interface_iface->get_info = _g_dbus_proxy_get_info;
|
|
dbus_interface_iface->get_object = _g_dbus_proxy_get_object;
|
|
dbus_interface_iface->dup_object = _g_dbus_proxy_dup_object;
|
|
dbus_interface_iface->set_object = _g_dbus_proxy_set_object;
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------------------------------------- */
|