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/* GDBus - GLib D-Bus Library
*
* Copyright (C) 2008-2010 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
#include "config.h"
#include "gdbusauthobserver.h"
#include "gio-marshal.h"
#include "gcredentials.h"
#include "gioenumtypes.h"
#include "giostream.h"
#include "glibintl.h"
#include "gioalias.h"
/**
* SECTION:gdbusauthobserver
* @short_description: Object used for authenticating connections
* @include: gio/gio.h
*
* The #GDBusAuthObserver type provides a mechanism for participating
* in how a #GDBusServer (or a #GDBusConnection) authenticates remote
* peers. Simply instantiate a #GDBusAuthObserver and connect to the
* signals you are interested in. Note that new signals may be added
* in the future
*
* For example, if you only want to allow D-Bus connections from
* processes owned by the same uid as the server, you would do this:
* <example id="auth-observer"><title>Controlling Authentication</title><programlisting>
* static gboolean
* on_authorize_authenticated_peer (GDBusAuthObserver *observer,
* GIOStream *stream,
* GCredentials *credentials,
* gpointer user_data)
* {
* GCredentials *me;
* gboolean authorized;
*
* authorized = FALSE;
* me = g_credentials_new ();
*
* if (credentials != NULL &&
* !g_credentials_is_same_user (credentials, me))
* authorized = TRUE;
*
* g_object_unref (me);
*
* return authorized;
* }
*
* static gboolean
* on_new_connection (GDBusServer *server,
* GDBusConnection *connection,
* gpointer user_data)
* {
* /<!-- -->* Guaranteed here that @connection is from a process owned by the same user *<!-- -->/
* }
*
* [...]
*
* GDBusAuthObserver *observer;
* GDBusServer *server;
* GError *error;
*
* error = NULL;
* observer = g_dbus_auth_observer_new ();
* server = g_dbus_server_new_sync ("unix:tmpdir=/tmp/my-app-name",
* G_DBUS_SERVER_FLAGS_NONE,
* observer,
* NULL, /<!-- -->* GCancellable *<!-- -->/
* &error);
* g_signal_connect (observer,
* "authorize-authenticated-peer",
* G_CALLBACK (on_authorize_authenticated_peer),
* NULL);
* g_signal_connect (server,
* "new-connection",
* G_CALLBACK (on_new_connection),
* NULL);
* g_object_unref (observer);
* g_dbus_server_start (server);
* </programlisting></example>
*/
struct _GDBusAuthObserverPrivate
{
gint foo;
};
enum
{
AUTHORIZE_AUTHENTICATED_PEER_SIGNAL,
LAST_SIGNAL,
};
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GDBusAuthObserver, g_dbus_auth_observer, G_TYPE_OBJECT);
/* ---------------------------------------------------------------------------------------------------- */
static void
g_dbus_auth_observer_finalize (GObject *object)
{
G_OBJECT_CLASS (g_dbus_auth_observer_parent_class)->finalize (object);
}
static gboolean
g_dbus_auth_observer_authorize_authenticated_peer_real (GDBusAuthObserver *observer,
GIOStream *stream,
GCredentials *credentials)
{
return TRUE;
}
gboolean
_g_signal_accumulator_false_handled (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy)
{
gboolean continue_emission;
gboolean signal_handled;
signal_handled = g_value_get_boolean (handler_return);
g_value_set_boolean (return_accu, signal_handled);
continue_emission = signal_handled;
return continue_emission;
}
static void
g_dbus_auth_observer_class_init (GDBusAuthObserverClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_dbus_auth_observer_finalize;
klass->authorize_authenticated_peer = g_dbus_auth_observer_authorize_authenticated_peer_real;
/**
* GDBusAuthObserver::authorize-authenticated-peer:
* @observer: The #GDBusAuthObserver emitting the signal.
* @stream: A #GIOStream for the #GDBusConnection.
* @credentials: Credentials received from the peer or %NULL.
*
* Emitted to check if a peer that is successfully authenticated
* is authorized.
*
* Returns: %TRUE if the peer is authorized, %FALSE if not.
*
* Since: 2.26
*/
signals[AUTHORIZE_AUTHENTICATED_PEER_SIGNAL] =
g_signal_new ("authorize-authenticated-peer",
G_TYPE_DBUS_AUTH_OBSERVER,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GDBusAuthObserverClass, authorize_authenticated_peer),
_g_signal_accumulator_false_handled,
NULL, /* accu_data */
_gio_marshal_BOOLEAN__OBJECT_OBJECT,
G_TYPE_BOOLEAN,
2,
G_TYPE_IO_STREAM,
G_TYPE_CREDENTIALS);
g_type_class_add_private (klass, sizeof (GDBusAuthObserverPrivate));
}
static void
g_dbus_auth_observer_init (GDBusAuthObserver *observer)
{
/* not used for now */
observer->priv = G_TYPE_INSTANCE_GET_PRIVATE (observer,
G_TYPE_DBUS_AUTH_OBSERVER,
GDBusAuthObserverPrivate);
}
/**
* g_dbus_auth_observer_new:
*
* Creates a new #GDBusAuthObserver object.
*
* Returns: A #GDBusAuthObserver. Free with g_object_unref().
*
* Since: 2.26
*/
GDBusAuthObserver *
g_dbus_auth_observer_new (void)
{
return g_object_new (G_TYPE_DBUS_AUTH_OBSERVER, NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_auth_observer_authorize_authenticated_peer:
* @observer: A #GDBusAuthObserver.
* @stream: A #GIOStream for the #GDBusConnection.
* @credentials: Credentials received from the peer or %NULL.
*
* Emits the #GDBusAuthObserver::authorize-authenticated-peer signal on @observer.
*
* Returns: %TRUE if the peer should be denied, %FALSE otherwise.
*
* Since: 2.26
*/
gboolean
g_dbus_auth_observer_authorize_authenticated_peer (GDBusAuthObserver *observer,
GIOStream *stream,
GCredentials *credentials)
{
gboolean denied;
denied = FALSE;
g_signal_emit (observer,
signals[AUTHORIZE_AUTHENTICATED_PEER_SIGNAL],
0,
stream,
credentials,
&denied);
return denied;
}
#define __G_DBUS_AUTH_OBSERVER_C__
#include "gioaliasdef.c"
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