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glib2.0/gio/gdbusobjectskeleton.c

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/* GDBus - GLib D-Bus Library
*
* Copyright (C) 2008-2010 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
#include "config.h"
#include "gdbusobject.h"
#include "gdbusobjectskeleton.h"
#include "gdbusinterfaceskeleton.h"
#include "gdbusprivate.h"
#include "gdbusmethodinvocation.h"
#include "gdbusintrospection.h"
#include "gdbusinterface.h"
#include "gdbusutils.h"
#include "glibintl.h"
/**
* SECTION:gdbusobjectskeleton
* @short_description: Service-side D-Bus object
* @include: gio/gio.h
*
* A #GDBusObjectSkeleton instance is essentially a group of D-Bus
* interfaces. The set of exported interfaces on the object may be
* dynamic and change at runtime.
*
* This type is intended to be used with #GDBusObjectManager.
*/
struct _GDBusObjectSkeletonPrivate
{
GMutex lock;
gchar *object_path;
GHashTable *map_name_to_iface;
};
enum
{
PROP_0,
PROP_G_OBJECT_PATH
};
enum
{
AUTHORIZE_METHOD_SIGNAL,
LAST_SIGNAL,
};
static guint signals[LAST_SIGNAL] = {0};
static void dbus_object_interface_init (GDBusObjectIface *iface);
G_DEFINE_TYPE_WITH_CODE (GDBusObjectSkeleton, g_dbus_object_skeleton, G_TYPE_OBJECT,
G_ADD_PRIVATE (GDBusObjectSkeleton)
G_IMPLEMENT_INTERFACE (G_TYPE_DBUS_OBJECT, dbus_object_interface_init))
static void
g_dbus_object_skeleton_finalize (GObject *_object)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (_object);
g_free (object->priv->object_path);
g_hash_table_unref (object->priv->map_name_to_iface);
g_mutex_clear (&object->priv->lock);
if (G_OBJECT_CLASS (g_dbus_object_skeleton_parent_class)->finalize != NULL)
G_OBJECT_CLASS (g_dbus_object_skeleton_parent_class)->finalize (_object);
}
static void
g_dbus_object_skeleton_get_property (GObject *_object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (_object);
switch (prop_id)
{
case PROP_G_OBJECT_PATH:
g_mutex_lock (&object->priv->lock);
g_value_set_string (value, object->priv->object_path);
g_mutex_unlock (&object->priv->lock);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
g_dbus_object_skeleton_set_property (GObject *_object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (_object);
switch (prop_id)
{
case PROP_G_OBJECT_PATH:
g_dbus_object_skeleton_set_object_path (object, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
g_dbus_object_skeleton_authorize_method_default (GDBusObjectSkeleton *object,
GDBusInterfaceSkeleton *interface,
GDBusMethodInvocation *invocation)
{
return TRUE;
}
static void
g_dbus_object_skeleton_class_init (GDBusObjectSkeletonClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_dbus_object_skeleton_finalize;
gobject_class->set_property = g_dbus_object_skeleton_set_property;
gobject_class->get_property = g_dbus_object_skeleton_get_property;
klass->authorize_method = g_dbus_object_skeleton_authorize_method_default;
/**
* GDBusObjectSkeleton:g-object-path:
*
* The object path where the object is exported.
*
* Since: 2.30
*/
g_object_class_install_property (gobject_class,
PROP_G_OBJECT_PATH,
g_param_spec_string ("g-object-path",
"Object Path",
"The object path where the object is exported",
NULL,
G_PARAM_READABLE |
G_PARAM_WRITABLE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS));
/**
* GDBusObjectSkeleton::authorize-method:
* @object: The #GDBusObjectSkeleton emitting the signal.
* @interface: The #GDBusInterfaceSkeleton that @invocation is for.
* @invocation: A #GDBusMethodInvocation.
*
* Emitted when a method is invoked by a remote caller and used to
* determine if the method call is authorized.
*
* This signal is like #GDBusInterfaceSkeleton's
* #GDBusInterfaceSkeleton::g-authorize-method signal,
* except that it is for the enclosing object.
*
* The default class handler just returns %TRUE.
*
* Returns: %TRUE if the call is authorized, %FALSE otherwise.
*
* Since: 2.30
*/
signals[AUTHORIZE_METHOD_SIGNAL] =
g_signal_new (I_("authorize-method"),
G_TYPE_DBUS_OBJECT_SKELETON,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GDBusObjectSkeletonClass, authorize_method),
_g_signal_accumulator_false_handled,
NULL,
NULL,
G_TYPE_BOOLEAN,
2,
G_TYPE_DBUS_INTERFACE_SKELETON,
G_TYPE_DBUS_METHOD_INVOCATION);
}
static void
g_dbus_object_skeleton_init (GDBusObjectSkeleton *object)
{
object->priv = g_dbus_object_skeleton_get_instance_private (object);
g_mutex_init (&object->priv->lock);
object->priv->map_name_to_iface = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
(GDestroyNotify) g_object_unref);
}
/**
* g_dbus_object_skeleton_new:
* @object_path: An object path.
*
* Creates a new #GDBusObjectSkeleton.
*
* Returns: A #GDBusObjectSkeleton. Free with g_object_unref().
*
* Since: 2.30
*/
GDBusObjectSkeleton *
g_dbus_object_skeleton_new (const gchar *object_path)
{
g_return_val_if_fail (g_variant_is_object_path (object_path), NULL);
return G_DBUS_OBJECT_SKELETON (g_object_new (G_TYPE_DBUS_OBJECT_SKELETON,
"g-object-path", object_path,
NULL));
}
/**
* g_dbus_object_skeleton_set_object_path:
* @object: A #GDBusObjectSkeleton.
* @object_path: A valid D-Bus object path.
*
* Sets the object path for @object.
*
* Since: 2.30
*/
void
g_dbus_object_skeleton_set_object_path (GDBusObjectSkeleton *object,
const gchar *object_path)
{
g_return_if_fail (G_IS_DBUS_OBJECT_SKELETON (object));
g_return_if_fail (object_path == NULL || g_variant_is_object_path (object_path));
g_mutex_lock (&object->priv->lock);
/* TODO: fail if object is currently exported */
if (g_strcmp0 (object->priv->object_path, object_path) != 0)
{
g_free (object->priv->object_path);
object->priv->object_path = g_strdup (object_path);
g_mutex_unlock (&object->priv->lock);
g_object_notify (G_OBJECT (object), "g-object-path");
}
else
{
g_mutex_unlock (&object->priv->lock);
}
}
static const gchar *
g_dbus_object_skeleton_get_object_path (GDBusObject *_object)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (_object);
const gchar *ret;
g_mutex_lock (&object->priv->lock);
ret = object->priv->object_path;
g_mutex_unlock (&object->priv->lock);
return ret;
}
/**
* g_dbus_object_skeleton_add_interface:
* @object: A #GDBusObjectSkeleton.
* @interface_: A #GDBusInterfaceSkeleton.
*
* Adds @interface_ to @object.
*
* If @object already contains a #GDBusInterfaceSkeleton with the same
* interface name, it is removed before @interface_ is added.
*
* Note that @object takes its own reference on @interface_ and holds
* it until removed.
*
* Since: 2.30
*/
void
g_dbus_object_skeleton_add_interface (GDBusObjectSkeleton *object,
GDBusInterfaceSkeleton *interface_)
{
GDBusInterfaceInfo *info;
GDBusInterface *interface_to_remove;
g_return_if_fail (G_IS_DBUS_OBJECT_SKELETON (object));
g_return_if_fail (G_IS_DBUS_INTERFACE_SKELETON (interface_));
g_mutex_lock (&object->priv->lock);
info = g_dbus_interface_skeleton_get_info (interface_);
g_object_ref (interface_);
interface_to_remove = g_hash_table_lookup (object->priv->map_name_to_iface, info->name);
if (interface_to_remove != NULL)
{
g_object_ref (interface_to_remove);
g_warn_if_fail (g_hash_table_remove (object->priv->map_name_to_iface, info->name));
}
g_hash_table_insert (object->priv->map_name_to_iface,
g_strdup (info->name),
g_object_ref (interface_));
g_dbus_interface_set_object (G_DBUS_INTERFACE (interface_), G_DBUS_OBJECT (object));
g_mutex_unlock (&object->priv->lock);
if (interface_to_remove != NULL)
{
g_dbus_interface_set_object (interface_to_remove, NULL);
g_signal_emit_by_name (object,
"interface-removed",
interface_to_remove);
g_object_unref (interface_to_remove);
}
g_signal_emit_by_name (object,
"interface-added",
interface_);
g_object_unref (interface_);
}
/**
* g_dbus_object_skeleton_remove_interface:
* @object: A #GDBusObjectSkeleton.
* @interface_: A #GDBusInterfaceSkeleton.
*
* Removes @interface_ from @object.
*
* Since: 2.30
*/
void
g_dbus_object_skeleton_remove_interface (GDBusObjectSkeleton *object,
GDBusInterfaceSkeleton *interface_)
{
GDBusInterfaceSkeleton *other_interface;
GDBusInterfaceInfo *info;
g_return_if_fail (G_IS_DBUS_OBJECT_SKELETON (object));
g_return_if_fail (G_IS_DBUS_INTERFACE (interface_));
g_mutex_lock (&object->priv->lock);
info = g_dbus_interface_skeleton_get_info (interface_);
other_interface = g_hash_table_lookup (object->priv->map_name_to_iface, info->name);
if (other_interface == NULL)
{
g_mutex_unlock (&object->priv->lock);
g_warning ("Tried to remove interface with name %s from object "
"at path %s but no such interface exists",
info->name,
object->priv->object_path);
}
else if (other_interface != interface_)
{
g_mutex_unlock (&object->priv->lock);
g_warning ("Tried to remove interface %p with name %s from object "
"at path %s but the object has the interface %p",
interface_,
info->name,
object->priv->object_path,
other_interface);
}
else
{
g_object_ref (interface_);
g_warn_if_fail (g_hash_table_remove (object->priv->map_name_to_iface, info->name));
g_mutex_unlock (&object->priv->lock);
g_dbus_interface_set_object (G_DBUS_INTERFACE (interface_), NULL);
g_signal_emit_by_name (object,
"interface-removed",
interface_);
g_object_unref (interface_);
}
}
/**
* g_dbus_object_skeleton_remove_interface_by_name:
* @object: A #GDBusObjectSkeleton.
* @interface_name: A D-Bus interface name.
*
* Removes the #GDBusInterface with @interface_name from @object.
*
* If no D-Bus interface of the given interface exists, this function
* does nothing.
*
* Since: 2.30
*/
void
g_dbus_object_skeleton_remove_interface_by_name (GDBusObjectSkeleton *object,
const gchar *interface_name)
{
GDBusInterface *interface;
g_return_if_fail (G_IS_DBUS_OBJECT_SKELETON (object));
g_return_if_fail (g_dbus_is_interface_name (interface_name));
g_mutex_lock (&object->priv->lock);
interface = g_hash_table_lookup (object->priv->map_name_to_iface, interface_name);
if (interface != NULL)
{
g_object_ref (interface);
g_warn_if_fail (g_hash_table_remove (object->priv->map_name_to_iface, interface_name));
g_mutex_unlock (&object->priv->lock);
g_dbus_interface_set_object (interface, NULL);
g_signal_emit_by_name (object,
"interface-removed",
interface);
g_object_unref (interface);
}
else
{
g_mutex_unlock (&object->priv->lock);
}
}
static GDBusInterface *
g_dbus_object_skeleton_get_interface (GDBusObject *_object,
const gchar *interface_name)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (_object);
GDBusInterface *ret;
g_return_val_if_fail (G_IS_DBUS_OBJECT_SKELETON (object), NULL);
g_return_val_if_fail (g_dbus_is_interface_name (interface_name), NULL);
g_mutex_lock (&object->priv->lock);
ret = g_hash_table_lookup (object->priv->map_name_to_iface, interface_name);
if (ret != NULL)
g_object_ref (ret);
g_mutex_unlock (&object->priv->lock);
return ret;
}
static GList *
g_dbus_object_skeleton_get_interfaces (GDBusObject *_object)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (_object);
GList *ret;
g_return_val_if_fail (G_IS_DBUS_OBJECT_SKELETON (object), NULL);
ret = NULL;
g_mutex_lock (&object->priv->lock);
ret = g_hash_table_get_values (object->priv->map_name_to_iface);
g_list_foreach (ret, (GFunc) g_object_ref, NULL);
g_mutex_unlock (&object->priv->lock);
return ret;
}
/**
* g_dbus_object_skeleton_flush:
* @object: A #GDBusObjectSkeleton.
*
* This method simply calls g_dbus_interface_skeleton_flush() on all
* interfaces belonging to @object. See that method for when flushing
* is useful.
*
* Since: 2.30
*/
void
g_dbus_object_skeleton_flush (GDBusObjectSkeleton *object)
{
GList *to_flush, *l;
g_mutex_lock (&object->priv->lock);
to_flush = g_hash_table_get_values (object->priv->map_name_to_iface);
g_list_foreach (to_flush, (GFunc) g_object_ref, NULL);
g_mutex_unlock (&object->priv->lock);
for (l = to_flush; l != NULL; l = l->next)
g_dbus_interface_skeleton_flush (G_DBUS_INTERFACE_SKELETON (l->data));
g_list_free_full (to_flush, g_object_unref);
}
static void
dbus_object_interface_init (GDBusObjectIface *iface)
{
iface->get_object_path = g_dbus_object_skeleton_get_object_path;
iface->get_interfaces = g_dbus_object_skeleton_get_interfaces;
iface->get_interface = g_dbus_object_skeleton_get_interface;
}
gboolean
_g_dbus_object_skeleton_has_authorize_method_handlers (GDBusObjectSkeleton *object)
{
gboolean has_handlers;
gboolean has_default_class_handler;
has_handlers = g_signal_has_handler_pending (object,
signals[AUTHORIZE_METHOD_SIGNAL],
0,
TRUE);
has_default_class_handler = (G_DBUS_OBJECT_SKELETON_GET_CLASS (object)->authorize_method ==
g_dbus_object_skeleton_authorize_method_default);
return has_handlers || !has_default_class_handler;
}
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