gio/gdbusobjectmanagerclient.c

   1 /* GDBus - GLib D-Bus Library
   2  *
   3  * Copyright (C) 2008-2010 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: David Zeuthen <davidz@redhat.com>
  19  */
  20
  21 #include "config.h"
  22
  23 #include "gdbusobjectmanager.h"
  24 #include "gdbusobjectmanagerclient.h"
  25 #include "gdbusobject.h"
  26 #include "gdbusprivate.h"
  27 #include "gioenumtypes.h"
  28 #include "ginitable.h"
  29 #include "gasyncresult.h"
  30 #include "gsimpleasyncresult.h"
  31 #include "gasyncinitable.h"
  32 #include "gdbusconnection.h"
  33 #include "gdbusutils.h"
  34 #include "gdbusobject.h"
  35 #include "gdbusobjectproxy.h"
  36 #include "gdbusproxy.h"
  37 #include "gdbusinterface.h"
  38
  39 #include "glibintl.h"
  40
  41 /**
  42  * SECTION:gdbusobjectmanagerclient
  43  * @short_description: Client-side object manager
  44  * @include: gio/gio.h
  45  *
  46  * #GDBusObjectManagerClient is used to create, monitor and delete object
  47  * proxies for remote objects exported by a #GDBusObjectManagerServer (or any
  48  * code implementing the
  49  * [org.freedesktop.DBus.ObjectManager](http://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-objectmanager)
  50  * interface).
  51  *
  52  * Once an instance of this type has been created, you can connect to
  53  * the #GDBusObjectManager::object-added and
  54  * #GDBusObjectManager::object-removed signals and inspect the
  55  * #GDBusObjectProxy objects returned by
  56  * g_dbus_object_manager_get_objects().
  57  *
  58  * If the name for a #GDBusObjectManagerClient is not owned by anyone at
  59  * object construction time, the default behavior is to request the
  60  * message bus to launch an owner for the name. This behavior can be
  61  * disabled using the %G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_DO_NOT_AUTO_START
  62  * flag. It's also worth noting that this only works if the name of
  63  * interest is activatable in the first place. E.g. in some cases it
  64  * is not possible to launch an owner for the requested name. In this
  65  * case, #GDBusObjectManagerClient object construction still succeeds but
  66  * there will be no object proxies
  67  * (e.g. g_dbus_object_manager_get_objects() returns the empty list) and
  68  * the #GDBusObjectManagerClient:name-owner property is %NULL.
  69  *
  70  * The owner of the requested name can come and go (for example
  71  * consider a system service being restarted) – #GDBusObjectManagerClient
  72  * handles this case too; simply connect to the #GObject::notify
  73  * signal to watch for changes on the #GDBusObjectManagerClient:name-owner
  74  * property. When the name owner vanishes, the behavior is that
  75  * #GDBusObjectManagerClient:name-owner is set to %NULL (this includes
  76  * emission of the #GObject::notify signal) and then
  77  * #GDBusObjectManager::object-removed signals are synthesized
  78  * for all currently existing object proxies. Since
  79  * #GDBusObjectManagerClient:name-owner is %NULL when this happens, you can
  80  * use this information to disambiguate a synthesized signal from a
  81  * genuine signal caused by object removal on the remote
  82  * #GDBusObjectManager. Similarly, when a new name owner appears,
  83  * #GDBusObjectManager::object-added signals are synthesized
  84  * while #GDBusObjectManagerClient:name-owner is still %NULL. Only when all
  85  * object proxies have been added, the #GDBusObjectManagerClient:name-owner
  86  * is set to the new name owner (this includes emission of the
  87  * #GObject::notify signal).  Furthermore, you are guaranteed that
  88  * #GDBusObjectManagerClient:name-owner will alternate between a name owner
  89  * (e.g. `:1.42`) and %NULL even in the case where
  90  * the name of interest is atomically replaced
  91  *
  92  * Ultimately, #GDBusObjectManagerClient is used to obtain #GDBusProxy
  93  * instances. All signals (including the
  94  * org.freedesktop.DBus.Properties::PropertiesChanged signal)
  95  * delivered to #GDBusProxy instances are guaranteed to originate
  96  * from the name owner. This guarantee along with the behavior
  97  * described above, means that certain race conditions including the
  98  * "half the proxy is from the old owner and the other half is from
  99  * the new owner" problem cannot happen.
 100  *
 101  * To avoid having the application connect to signals on the returned
 102  * #GDBusObjectProxy and #GDBusProxy objects, the
 103  * #GDBusObject::interface-added,
 104  * #GDBusObject::interface-removed,
 105  * #GDBusProxy::g-properties-changed and
 106  * #GDBusProxy::g-signal signals
 107  * are also emitted on the #GDBusObjectManagerClient instance managing these
 108  * objects. The signals emitted are
 109  * #GDBusObjectManager::interface-added,
 110  * #GDBusObjectManager::interface-removed,
 111  * #GDBusObjectManagerClient::interface-proxy-properties-changed and
 112  * #GDBusObjectManagerClient::interface-proxy-signal.
 113  *
 114  * Note that all callbacks and signals are emitted in the
 115  * [thread-default main context][g-main-context-push-thread-default]
 116  * that the #GDBusObjectManagerClient object was constructed
 117  * in. Additionally, the #GDBusObjectProxy and #GDBusProxy objects
 118  * originating from the #GDBusObjectManagerClient object will be created in
 119  * the same context and, consequently, will deliver signals in the
 120  * same main loop.
 121  */
 122
 123 struct _GDBusObjectManagerClientPrivate
 124 {
 125   GMutex lock;
 126
 127   GBusType bus_type;
 128   GDBusConnection *connection;
 129   gchar *object_path;
 130   gchar *name;
 131   gchar *name_owner;
 132   GDBusObjectManagerClientFlags flags;
 133
 134   GDBusProxy *control_proxy;
 135
 136   GHashTable *map_object_path_to_object_proxy;
 137
 138   guint signal_subscription_id;
 139   gchar *match_rule;
 140
 141   GDBusProxyTypeFunc get_proxy_type_func;
 142   gpointer get_proxy_type_user_data;
 143   GDestroyNotify get_proxy_type_destroy_notify;
 144 };
 145
 146 enum
 147 {
 148   PROP_0,
 149   PROP_BUS_TYPE,
 150   PROP_CONNECTION,
 151   PROP_FLAGS,
 152   PROP_OBJECT_PATH,
 153   PROP_NAME,
 154   PROP_NAME_OWNER,
 155   PROP_GET_PROXY_TYPE_FUNC,
 156   PROP_GET_PROXY_TYPE_USER_DATA,
 157   PROP_GET_PROXY_TYPE_DESTROY_NOTIFY
 158 };
 159
 160 enum
 161 {
 162   INTERFACE_PROXY_SIGNAL_SIGNAL,
 163   INTERFACE_PROXY_PROPERTIES_CHANGED_SIGNAL,
 164   LAST_SIGNAL
 165 };
 166
 167 static guint signals[LAST_SIGNAL] = { 0 };
 168
 169 static void initable_iface_init       (GInitableIface *initable_iface);
 170 static void async_initable_iface_init (GAsyncInitableIface *async_initable_iface);
 171 static void dbus_object_manager_interface_init (GDBusObjectManagerIface *iface);
 172
 173 G_DEFINE_TYPE_WITH_CODE (GDBusObjectManagerClient, g_dbus_object_manager_client, G_TYPE_OBJECT,
 174                          G_ADD_PRIVATE (GDBusObjectManagerClient)
 175                          G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, initable_iface_init)
 176                          G_IMPLEMENT_INTERFACE (G_TYPE_ASYNC_INITABLE, async_initable_iface_init)
 177                          G_IMPLEMENT_INTERFACE (G_TYPE_DBUS_OBJECT_MANAGER, dbus_object_manager_interface_init));
 178
 179 static void maybe_unsubscribe_signals (GDBusObjectManagerClient *manager);
 180
 181 static void on_control_proxy_g_signal (GDBusProxy   *proxy,
 182                                        const gchar  *sender_name,
 183                                        const gchar  *signal_name,
 184                                        GVariant     *parameters,
 185                                        gpointer      user_data);
 186
 187 static void process_get_all_result (GDBusObjectManagerClient *manager,
 188                                     GVariant          *value,
 189                                     const gchar       *name_owner);
 190
 191 static void
 192 g_dbus_object_manager_client_finalize (GObject *object)
 193 {
 194   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (object);
 195
 196   maybe_unsubscribe_signals (manager);
 197
 198   g_hash_table_unref (manager->priv->map_object_path_to_object_proxy);
 199
 200   if (manager->priv->control_proxy != NULL)
 201     {
 202       g_signal_handlers_disconnect_by_func (manager->priv->control_proxy,
 203                                             on_control_proxy_g_signal,
 204                                             manager);
 205       g_object_unref (manager->priv->control_proxy);
 206     }
 207   g_object_unref (manager->priv->connection);
 208   g_free (manager->priv->object_path);
 209   g_free (manager->priv->name);
 210   g_free (manager->priv->name_owner);
 211
 212   if (manager->priv->get_proxy_type_destroy_notify != NULL)
 213     manager->priv->get_proxy_type_destroy_notify (manager->priv->get_proxy_type_user_data);
 214
 215   g_mutex_clear (&manager->priv->lock);
 216
 217   if (G_OBJECT_CLASS (g_dbus_object_manager_client_parent_class)->finalize != NULL)
 218     G_OBJECT_CLASS (g_dbus_object_manager_client_parent_class)->finalize (object);
 219 }
 220
 221 static void
 222 g_dbus_object_manager_client_get_property (GObject    *_object,
 223                                            guint       prop_id,
 224                                            GValue     *value,
 225                                            GParamSpec *pspec)
 226 {
 227   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (_object);
 228
 229   switch (prop_id)
 230     {
 231     case PROP_CONNECTION:
 232       g_value_set_object (value, g_dbus_object_manager_client_get_connection (manager));
 233       break;
 234
 235     case PROP_OBJECT_PATH:
 236       g_value_set_string (value, g_dbus_object_manager_get_object_path (G_DBUS_OBJECT_MANAGER (manager)));
 237       break;
 238
 239     case PROP_NAME:
 240       g_value_set_string (value, g_dbus_object_manager_client_get_name (manager));
 241       break;
 242
 243     case PROP_FLAGS:
 244       g_value_set_flags (value, g_dbus_object_manager_client_get_flags (manager));
 245       break;
 246
 247     case PROP_NAME_OWNER:
 248       g_value_take_string (value, g_dbus_object_manager_client_get_name_owner (manager));
 249       break;
 250
 251     default:
 252       G_OBJECT_WARN_INVALID_PROPERTY_ID (manager, prop_id, pspec);
 253       break;
 254     }
 255 }
 256
 257 static void
 258 g_dbus_object_manager_client_set_property (GObject       *_object,
 259                                            guint          prop_id,
 260                                            const GValue  *value,
 261                                            GParamSpec    *pspec)
 262 {
 263   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (_object);
 264   const gchar *name;
 265
 266   switch (prop_id)
 267     {
 268     case PROP_BUS_TYPE:
 269       manager->priv->bus_type = g_value_get_enum (value);
 270       break;
 271
 272     case PROP_CONNECTION:
 273       if (g_value_get_object (value) != NULL)
 274         {
 275           g_assert (manager->priv->connection == NULL);
 276           g_assert (G_IS_DBUS_CONNECTION (g_value_get_object (value)));
 277           manager->priv->connection = g_value_dup_object (value);
 278         }
 279       break;
 280
 281     case PROP_OBJECT_PATH:
 282       g_assert (manager->priv->object_path == NULL);
 283       g_assert (g_variant_is_object_path (g_value_get_string (value)));
 284       manager->priv->object_path = g_value_dup_string (value);
 285       break;
 286
 287     case PROP_NAME:
 288       g_assert (manager->priv->name == NULL);
 289       name = g_value_get_string (value);
 290       g_assert (name == NULL || g_dbus_is_name (name));
 291       manager->priv->name = g_strdup (name);
 292       break;
 293
 294     case PROP_FLAGS:
 295       manager->priv->flags = g_value_get_flags (value);
 296       break;
 297
 298     case PROP_GET_PROXY_TYPE_FUNC:
 299       manager->priv->get_proxy_type_func = g_value_get_pointer (value);
 300       break;
 301
 302     case PROP_GET_PROXY_TYPE_USER_DATA:
 303       manager->priv->get_proxy_type_user_data = g_value_get_pointer (value);
 304       break;
 305
 306     case PROP_GET_PROXY_TYPE_DESTROY_NOTIFY:
 307       manager->priv->get_proxy_type_destroy_notify = g_value_get_pointer (value);
 308       break;
 309
 310     default:
 311       G_OBJECT_WARN_INVALID_PROPERTY_ID (manager, prop_id, pspec);
 312       break;
 313     }
 314 }
 315
 316 static void
 317 g_dbus_object_manager_client_class_init (GDBusObjectManagerClientClass *klass)
 318 {
 319   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 320
 321   gobject_class->finalize     = g_dbus_object_manager_client_finalize;
 322   gobject_class->set_property = g_dbus_object_manager_client_set_property;
 323   gobject_class->get_property = g_dbus_object_manager_client_get_property;
 324
 325   /**
 326    * GDBusObjectManagerClient:connection:
 327    *
 328    * The #GDBusConnection to use.
 329    *
 330    * Since: 2.30
 331    */
 332   g_object_class_install_property (gobject_class,
 333                                    PROP_CONNECTION,
 334                                    g_param_spec_object ("connection",
 335                                                         "Connection",
 336                                                         "The connection to use",
 337                                                         G_TYPE_DBUS_CONNECTION,
 338                                                         G_PARAM_READABLE |
 339                                                         G_PARAM_WRITABLE |
 340                                                         G_PARAM_CONSTRUCT_ONLY |
 341                                                         G_PARAM_STATIC_STRINGS));
 342
 343   /**
 344    * GDBusObjectManagerClient:bus-type:
 345    *
 346    * If this property is not %G_BUS_TYPE_NONE, then
 347    * #GDBusObjectManagerClient:connection must be %NULL and will be set to the
 348    * #GDBusConnection obtained by calling g_bus_get() with the value
 349    * of this property.
 350    *
 351    * Since: 2.30
 352    */
 353   g_object_class_install_property (gobject_class,
 354                                    PROP_BUS_TYPE,
 355                                    g_param_spec_enum ("bus-type",
 356                                                       "Bus Type",
 357                                                       "The bus to connect to, if any",
 358                                                       G_TYPE_BUS_TYPE,
 359                                                       G_BUS_TYPE_NONE,
 360                                                       G_PARAM_WRITABLE |
 361                                                       G_PARAM_CONSTRUCT_ONLY |
 362                                                       G_PARAM_STATIC_NAME |
 363                                                       G_PARAM_STATIC_BLURB |
 364                                                       G_PARAM_STATIC_NICK));
 365
 366   /**
 367    * GDBusObjectManagerClient:flags:
 368    *
 369    * Flags from the #GDBusObjectManagerClientFlags enumeration.
 370    *
 371    * Since: 2.30
 372    */
 373   g_object_class_install_property (gobject_class,
 374                                    PROP_FLAGS,
 375                                    g_param_spec_flags ("flags",
 376                                                        "Flags",
 377                                                        "Flags for the proxy manager",
 378                                                        G_TYPE_DBUS_OBJECT_MANAGER_CLIENT_FLAGS,
 379                                                        G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_NONE,
 380                                                        G_PARAM_READABLE |
 381                                                        G_PARAM_WRITABLE |
 382                                                        G_PARAM_CONSTRUCT_ONLY |
 383                                                        G_PARAM_STATIC_NAME |
 384                                                        G_PARAM_STATIC_BLURB |
 385                                                        G_PARAM_STATIC_NICK));
 386
 387   /**
 388    * GDBusObjectManagerClient:object-path:
 389    *
 390    * The object path the manager is for.
 391    *
 392    * Since: 2.30
 393    */
 394   g_object_class_install_property (gobject_class,
 395                                    PROP_OBJECT_PATH,
 396                                    g_param_spec_string ("object-path",
 397                                                         "Object Path",
 398                                                         "The object path of the control object",
 399                                                         NULL,
 400                                                         G_PARAM_READABLE |
 401                                                         G_PARAM_WRITABLE |
 402                                                         G_PARAM_CONSTRUCT_ONLY |
 403                                                         G_PARAM_STATIC_STRINGS));
 404
 405   /**
 406    * GDBusObjectManagerClient:name:
 407    *
 408    * The well-known name or unique name that the manager is for.
 409    *
 410    * Since: 2.30
 411    */
 412   g_object_class_install_property (gobject_class,
 413                                    PROP_NAME,
 414                                    g_param_spec_string ("name",
 415                                                         "Name",
 416                                                         "Name that the manager is for",
 417                                                         NULL,
 418                                                         G_PARAM_READABLE |
 419                                                         G_PARAM_WRITABLE |
 420                                                         G_PARAM_CONSTRUCT_ONLY |
 421                                                         G_PARAM_STATIC_STRINGS));
 422
 423   /**
 424    * GDBusObjectManagerClient:name-owner:
 425    *
 426    * The unique name that owns #GDBusObjectManagerClient:name or %NULL if
 427    * no-one is currently owning the name. Connect to the
 428    * #GObject::notify signal to track changes to this property.
 429    *
 430    * Since: 2.30
 431    */
 432   g_object_class_install_property (gobject_class,
 433                                    PROP_NAME_OWNER,
 434                                    g_param_spec_string ("name-owner",
 435                                                         "Name Owner",
 436                                                         "The owner of the name we are watching",
 437                                                         NULL,
 438                                                         G_PARAM_READABLE |
 439                                                         G_PARAM_STATIC_STRINGS));
 440
 441   /**
 442    * GDBusObjectManagerClient:get-proxy-type-func:
 443    *
 444    * The #GDBusProxyTypeFunc to use when determining what #GType to
 445    * use for interface proxies or %NULL.
 446    *
 447    * Since: 2.30
 448    */
 449   g_object_class_install_property (gobject_class,
 450                                    PROP_GET_PROXY_TYPE_FUNC,
 451                                    g_param_spec_pointer ("get-proxy-type-func",
 452                                                          "GDBusProxyTypeFunc Function Pointer",
 453                                                          "The GDBusProxyTypeFunc pointer to use",
 454                                                          G_PARAM_READABLE |
 455                                                          G_PARAM_WRITABLE |
 456                                                          G_PARAM_CONSTRUCT_ONLY |
 457                                                          G_PARAM_STATIC_STRINGS));
 458
 459   /**
 460    * GDBusObjectManagerClient:get-proxy-type-user-data:
 461    *
 462    * The #gpointer user_data to pass to #GDBusObjectManagerClient:get-proxy-type-func.
 463    *
 464    * Since: 2.30
 465    */
 466   g_object_class_install_property (gobject_class,
 467                                    PROP_GET_PROXY_TYPE_USER_DATA,
 468                                    g_param_spec_pointer ("get-proxy-type-user-data",
 469                                                          "GDBusProxyTypeFunc User Data",
 470                                                          "The GDBusProxyTypeFunc user_data",
 471                                                          G_PARAM_READABLE |
 472                                                          G_PARAM_WRITABLE |
 473                                                          G_PARAM_CONSTRUCT_ONLY |
 474                                                          G_PARAM_STATIC_STRINGS));
 475
 476   /**
 477    * GDBusObjectManagerClient:get-proxy-type-destroy-notify:
 478    *
 479    * A #GDestroyNotify for the #gpointer user_data in #GDBusObjectManagerClient:get-proxy-type-user-data.
 480    *
 481    * Since: 2.30
 482    */
 483   g_object_class_install_property (gobject_class,
 484                                    PROP_GET_PROXY_TYPE_DESTROY_NOTIFY,
 485                                    g_param_spec_pointer ("get-proxy-type-destroy-notify",
 486                                                          "GDBusProxyTypeFunc user data free function",
 487                                                          "The GDBusProxyTypeFunc user data free function",
 488                                                          G_PARAM_READABLE |
 489                                                          G_PARAM_WRITABLE |
 490                                                          G_PARAM_CONSTRUCT_ONLY |
 491                                                          G_PARAM_STATIC_STRINGS));
 492
 493   /**
 494    * GDBusObjectManagerClient::interface-proxy-signal:
 495    * @manager: The #GDBusObjectManagerClient emitting the signal.
 496    * @object_proxy: The #GDBusObjectProxy on which an interface is emitting a D-Bus signal.
 497    * @interface_proxy: The #GDBusProxy that is emitting a D-Bus signal.
 498    * @sender_name: The sender of the signal or NULL if the connection is not a bus connection.
 499    * @signal_name: The signal name.
 500    * @parameters: A #GVariant tuple with parameters for the signal.
 501    *
 502    * Emitted when a D-Bus signal is received on @interface_proxy.
 503    *
 504    * This signal exists purely as a convenience to avoid having to
 505    * connect signals to all interface proxies managed by @manager.
 506    *
 507    * This signal is emitted in the
 508    * [thread-default main context][g-main-context-push-thread-default]
 509    * that @manager was constructed in.
 510    *
 511    * Since: 2.30
 512    */
 513   signals[INTERFACE_PROXY_SIGNAL_SIGNAL] =
 514     g_signal_new ("interface-proxy-signal",
 515                   G_TYPE_DBUS_OBJECT_MANAGER_CLIENT,
 516                   G_SIGNAL_RUN_LAST,
 517                   G_STRUCT_OFFSET (GDBusObjectManagerClientClass, interface_proxy_signal),
 518                   NULL,
 519                   NULL,
 520                   NULL,
 521                   G_TYPE_NONE,
 522                   5,
 523                   G_TYPE_DBUS_OBJECT_PROXY,
 524                   G_TYPE_DBUS_PROXY,
 525                   G_TYPE_STRING,
 526                   G_TYPE_STRING,
 527                   G_TYPE_VARIANT);
 528
 529   /**
 530    * GDBusObjectManagerClient::interface-proxy-properties-changed:
 531    * @manager: The #GDBusObjectManagerClient emitting the signal.
 532    * @object_proxy: The #GDBusObjectProxy on which an interface has properties that are changing.
 533    * @interface_proxy: The #GDBusProxy that has properties that are changing.
 534    * @changed_properties: A #GVariant containing the properties that changed.
 535    * @invalidated_properties: A %NULL terminated array of properties that was invalidated.
 536    *
 537    * Emitted when one or more D-Bus properties on proxy changes. The
 538    * local cache has already been updated when this signal fires. Note
 539    * that both @changed_properties and @invalidated_properties are
 540    * guaranteed to never be %NULL (either may be empty though).
 541    *
 542    * This signal exists purely as a convenience to avoid having to
 543    * connect signals to all interface proxies managed by @manager.
 544    *
 545    * This signal is emitted in the
 546    * [thread-default main context][g-main-context-push-thread-default]
 547    * that @manager was constructed in.
 548    *
 549    * Since: 2.30
 550    */
 551   signals[INTERFACE_PROXY_PROPERTIES_CHANGED_SIGNAL] =
 552     g_signal_new ("interface-proxy-properties-changed",
 553                   G_TYPE_DBUS_OBJECT_MANAGER_CLIENT,
 554                   G_SIGNAL_RUN_LAST,
 555                   G_STRUCT_OFFSET (GDBusObjectManagerClientClass, interface_proxy_properties_changed),
 556                   NULL,
 557                   NULL,
 558                   NULL,
 559                   G_TYPE_NONE,
 560                   4,
 561                   G_TYPE_DBUS_OBJECT_PROXY,
 562                   G_TYPE_DBUS_PROXY,
 563                   G_TYPE_VARIANT,
 564                   G_TYPE_STRV);
 565 }
 566
 567 static void
 568 g_dbus_object_manager_client_init (GDBusObjectManagerClient *manager)
 569 {
 570   manager->priv = g_dbus_object_manager_client_get_instance_private (manager);
 571   g_mutex_init (&manager->priv->lock);
 572   manager->priv->map_object_path_to_object_proxy = g_hash_table_new_full (g_str_hash,
 573                                                                           g_str_equal,
 574                                                                           g_free,
 575                                                                           (GDestroyNotify) g_object_unref);
 576 }
 577
 578 /* ---------------------------------------------------------------------------------------------------- */
 579
 580 /**
 581  * g_dbus_object_manager_client_new_sync:
 582  * @connection: A #GDBusConnection.
 583  * @flags: Zero or more flags from the #GDBusObjectManagerClientFlags enumeration.
 584  * @name: (allow-none): The owner of the control object (unique or well-known name), or %NULL when not using a message bus connection.
 585  * @object_path: The object path of the control object.
 586  * @get_proxy_type_func: (allow-none): A #GDBusProxyTypeFunc function or %NULL to always construct #GDBusProxy proxies.
 587  * @get_proxy_type_user_data: User data to pass to @get_proxy_type_func.
 588  * @get_proxy_type_destroy_notify: (allow-none): Free function for @get_proxy_type_user_data or %NULL.
 589  * @cancellable: (allow-none): A #GCancellable or %NULL
 590  * @error: Return location for error or %NULL.
 591  *
 592  * Creates a new #GDBusObjectManagerClient object.
 593  *
 594  * This is a synchronous failable constructor - the calling thread is
 595  * blocked until a reply is received. See g_dbus_object_manager_client_new()
 596  * for the asynchronous version.
 597  *
 598  * Returns: (transfer full) (type GDBusObjectManagerClient): A
 599  *   #GDBusObjectManagerClient object or %NULL if @error is set. Free
 600  *   with g_object_unref().
 601  *
 602  * Since: 2.30
 603  */
 604 GDBusObjectManager *
 605 g_dbus_object_manager_client_new_sync (GDBusConnection               *connection,
 606                                        GDBusObjectManagerClientFlags  flags,
 607                                        const gchar                   *name,
 608                                        const gchar                   *object_path,
 609                                        GDBusProxyTypeFunc             get_proxy_type_func,
 610                                        gpointer                       get_proxy_type_user_data,
 611                                        GDestroyNotify                 get_proxy_type_destroy_notify,
 612                                        GCancellable                  *cancellable,
 613                                        GError                       **error)
 614 {
 615   GInitable *initable;
 616
 617   g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), NULL);
 618   g_return_val_if_fail ((name == NULL && g_dbus_connection_get_unique_name (connection) == NULL) ||
 619                         g_dbus_is_name (name), NULL);
 620   g_return_val_if_fail (g_variant_is_object_path (object_path), NULL);
 621   g_return_val_if_fail (error == NULL || *error == NULL, NULL);
 622
 623   initable = g_initable_new (G_TYPE_DBUS_OBJECT_MANAGER_CLIENT,
 624                              cancellable,
 625                              error,
 626                              "connection", connection,
 627                              "flags", flags,
 628                              "name", name,
 629                              "object-path", object_path,
 630                              "get-proxy-type-func", get_proxy_type_func,
 631                              "get-proxy-type-user-data", get_proxy_type_user_data,
 632                              "get-proxy-type-destroy-notify", get_proxy_type_destroy_notify,
 633                              NULL);
 634   if (initable != NULL)
 635     return G_DBUS_OBJECT_MANAGER (initable);
 636   else
 637     return NULL;
 638 }
 639
 640 /**
 641  * g_dbus_object_manager_client_new:
 642  * @connection: A #GDBusConnection.
 643  * @flags: Zero or more flags from the #GDBusObjectManagerClientFlags enumeration.
 644  * @name: The owner of the control object (unique or well-known name).
 645  * @object_path: The object path of the control object.
 646  * @get_proxy_type_func: (allow-none): A #GDBusProxyTypeFunc function or %NULL to always construct #GDBusProxy proxies.
 647  * @get_proxy_type_user_data: User data to pass to @get_proxy_type_func.
 648  * @get_proxy_type_destroy_notify: (allow-none): Free function for @get_proxy_type_user_data or %NULL.
 649  * @cancellable: (allow-none): A #GCancellable or %NULL
 650  * @callback: A #GAsyncReadyCallback to call when the request is satisfied.
 651  * @user_data: The data to pass to @callback.
 652  *
 653  * Asynchronously creates a new #GDBusObjectManagerClient object.
 654  *
 655  * This is an asynchronous failable constructor. When the result is
 656  * ready, @callback will be invoked in the
 657  * [thread-default main context][g-main-context-push-thread-default]
 658  * of the thread you are calling this method from. You can
 659  * then call g_dbus_object_manager_client_new_finish() to get the result. See
 660  * g_dbus_object_manager_client_new_sync() for the synchronous version.
 661  *
 662  * Since: 2.30
 663  */
 664 void
 665 g_dbus_object_manager_client_new (GDBusConnection               *connection,
 666                                   GDBusObjectManagerClientFlags  flags,
 667                                   const gchar                   *name,
 668                                   const gchar                   *object_path,
 669                                   GDBusProxyTypeFunc             get_proxy_type_func,
 670                                   gpointer                       get_proxy_type_user_data,
 671                                   GDestroyNotify                 get_proxy_type_destroy_notify,
 672                                   GCancellable                  *cancellable,
 673                                   GAsyncReadyCallback            callback,
 674                                   gpointer                       user_data)
 675 {
 676   g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
 677   g_return_if_fail ((name == NULL && g_dbus_connection_get_unique_name (connection) == NULL) ||
 678                         g_dbus_is_name (name));
 679   g_return_if_fail (g_variant_is_object_path (object_path));
 680
 681   g_async_initable_new_async (G_TYPE_DBUS_OBJECT_MANAGER_CLIENT,
 682                               G_PRIORITY_DEFAULT,
 683                               cancellable,
 684                               callback,
 685                               user_data,
 686                               "connection", connection,
 687                               "flags", flags,
 688                               "name", name,
 689                               "object-path", object_path,
 690                               "get-proxy-type-func", get_proxy_type_func,
 691                               "get-proxy-type-user-data", get_proxy_type_user_data,
 692                               "get-proxy-type-destroy-notify", get_proxy_type_destroy_notify,
 693                               NULL);
 694 }
 695
 696 /**
 697  * g_dbus_object_manager_client_new_finish:
 698  * @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to g_dbus_object_manager_client_new().
 699  * @error: Return location for error or %NULL.
 700  *
 701  * Finishes an operation started with g_dbus_object_manager_client_new().
 702  *
 703  * Returns: (transfer full) (type GDBusObjectManagerClient): A
 704  *   #GDBusObjectManagerClient object or %NULL if @error is set. Free
 705  *   with g_object_unref().
 706  *
 707  * Since: 2.30
 708  */
 709 GDBusObjectManager *
 710 g_dbus_object_manager_client_new_finish (GAsyncResult   *res,
 711                                          GError        **error)
 712 {
 713   GObject *object;
 714   GObject *source_object;
 715
 716   source_object = g_async_result_get_source_object (res);
 717   g_assert (source_object != NULL);
 718
 719   object = g_async_initable_new_finish (G_ASYNC_INITABLE (source_object),
 720                                         res,
 721                                         error);
 722   g_object_unref (source_object);
 723
 724   if (object != NULL)
 725     return G_DBUS_OBJECT_MANAGER (object);
 726   else
 727     return NULL;
 728 }
 729
 730 /* ---------------------------------------------------------------------------------------------------- */
 731
 732 /**
 733  * g_dbus_object_manager_client_new_for_bus_sync:
 734  * @bus_type: A #GBusType.
 735  * @flags: Zero or more flags from the #GDBusObjectManagerClientFlags enumeration.
 736  * @name: The owner of the control object (unique or well-known name).
 737  * @object_path: The object path of the control object.
 738  * @get_proxy_type_func: (allow-none): A #GDBusProxyTypeFunc function or %NULL to always construct #GDBusProxy proxies.
 739  * @get_proxy_type_user_data: User data to pass to @get_proxy_type_func.
 740  * @get_proxy_type_destroy_notify: (allow-none): Free function for @get_proxy_type_user_data or %NULL.
 741  * @cancellable: (allow-none): A #GCancellable or %NULL
 742  * @error: Return location for error or %NULL.
 743  *
 744  * Like g_dbus_object_manager_client_new_sync() but takes a #GBusType instead
 745  * of a #GDBusConnection.
 746  *
 747  * This is a synchronous failable constructor - the calling thread is
 748  * blocked until a reply is received. See g_dbus_object_manager_client_new_for_bus()
 749  * for the asynchronous version.
 750  *
 751  * Returns: (transfer full) (type GDBusObjectManagerClient): A
 752  *   #GDBusObjectManagerClient object or %NULL if @error is set. Free
 753  *   with g_object_unref().
 754  *
 755  * Since: 2.30
 756  */
 757 GDBusObjectManager *
 758 g_dbus_object_manager_client_new_for_bus_sync (GBusType                       bus_type,
 759                                                GDBusObjectManagerClientFlags  flags,
 760                                                const gchar                   *name,
 761                                                const gchar                   *object_path,
 762                                                GDBusProxyTypeFunc             get_proxy_type_func,
 763                                                gpointer                       get_proxy_type_user_data,
 764                                                GDestroyNotify                 get_proxy_type_destroy_notify,
 765                                                GCancellable                  *cancellable,
 766                                                GError                       **error)
 767 {
 768   GInitable *initable;
 769
 770   g_return_val_if_fail (bus_type != G_BUS_TYPE_NONE, NULL);
 771   g_return_val_if_fail (g_dbus_is_name (name), NULL);
 772   g_return_val_if_fail (g_variant_is_object_path (object_path), NULL);
 773   g_return_val_if_fail (error == NULL || *error == NULL, NULL);
 774
 775   initable = g_initable_new (G_TYPE_DBUS_OBJECT_MANAGER_CLIENT,
 776                              cancellable,
 777                              error,
 778                              "bus-type", bus_type,
 779                              "flags", flags,
 780                              "name", name,
 781                              "object-path", object_path,
 782                              "get-proxy-type-func", get_proxy_type_func,
 783                              "get-proxy-type-user-data", get_proxy_type_user_data,
 784                              "get-proxy-type-destroy-notify", get_proxy_type_destroy_notify,
 785                              NULL);
 786   if (initable != NULL)
 787     return G_DBUS_OBJECT_MANAGER (initable);
 788   else
 789     return NULL;
 790 }
 791
 792 /**
 793  * g_dbus_object_manager_client_new_for_bus:
 794  * @bus_type: A #GBusType.
 795  * @flags: Zero or more flags from the #GDBusObjectManagerClientFlags enumeration.
 796  * @name: The owner of the control object (unique or well-known name).
 797  * @object_path: The object path of the control object.
 798  * @get_proxy_type_func: (allow-none): A #GDBusProxyTypeFunc function or %NULL to always construct #GDBusProxy proxies.
 799  * @get_proxy_type_user_data: User data to pass to @get_proxy_type_func.
 800  * @get_proxy_type_destroy_notify: (allow-none): Free function for @get_proxy_type_user_data or %NULL.
 801  * @cancellable: (allow-none): A #GCancellable or %NULL
 802  * @callback: A #GAsyncReadyCallback to call when the request is satisfied.
 803  * @user_data: The data to pass to @callback.
 804  *
 805  * Like g_dbus_object_manager_client_new() but takes a #GBusType instead of a
 806  * #GDBusConnection.
 807  *
 808  * This is an asynchronous failable constructor. When the result is
 809  * ready, @callback will be invoked in the
 810  * [thread-default main loop][g-main-context-push-thread-default]
 811  * of the thread you are calling this method from. You can
 812  * then call g_dbus_object_manager_client_new_for_bus_finish() to get the result. See
 813  * g_dbus_object_manager_client_new_for_bus_sync() for the synchronous version.
 814  *
 815  * Since: 2.30
 816  */
 817 void
 818 g_dbus_object_manager_client_new_for_bus (GBusType                       bus_type,
 819                                           GDBusObjectManagerClientFlags  flags,
 820                                           const gchar                   *name,
 821                                           const gchar                   *object_path,
 822                                           GDBusProxyTypeFunc             get_proxy_type_func,
 823                                           gpointer                       get_proxy_type_user_data,
 824                                           GDestroyNotify                 get_proxy_type_destroy_notify,
 825                                           GCancellable                  *cancellable,
 826                                           GAsyncReadyCallback            callback,
 827                                           gpointer                       user_data)
 828 {
 829   g_return_if_fail (bus_type != G_BUS_TYPE_NONE);
 830   g_return_if_fail (g_dbus_is_name (name));
 831   g_return_if_fail (g_variant_is_object_path (object_path));
 832
 833   g_async_initable_new_async (G_TYPE_DBUS_OBJECT_MANAGER_CLIENT,
 834                               G_PRIORITY_DEFAULT,
 835                               cancellable,
 836                               callback,
 837                               user_data,
 838                               "bus-type", bus_type,
 839                               "flags", flags,
 840                               "name", name,
 841                               "object-path", object_path,
 842                               "get-proxy-type-func", get_proxy_type_func,
 843                               "get-proxy-type-user-data", get_proxy_type_user_data,
 844                               "get-proxy-type-destroy-notify", get_proxy_type_destroy_notify,
 845                               NULL);
 846 }
 847
 848 /**
 849  * g_dbus_object_manager_client_new_for_bus_finish:
 850  * @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to g_dbus_object_manager_client_new_for_bus().
 851  * @error: Return location for error or %NULL.
 852  *
 853  * Finishes an operation started with g_dbus_object_manager_client_new_for_bus().
 854  *
 855  * Returns: (transfer full) (type GDBusObjectManagerClient): A
 856  *   #GDBusObjectManagerClient object or %NULL if @error is set. Free
 857  *   with g_object_unref().
 858  *
 859  * Since: 2.30
 860  */
 861 GDBusObjectManager *
 862 g_dbus_object_manager_client_new_for_bus_finish (GAsyncResult   *res,
 863                                                  GError        **error)
 864 {
 865   GObject *object;
 866   GObject *source_object;
 867
 868   source_object = g_async_result_get_source_object (res);
 869   g_assert (source_object != NULL);
 870
 871   object = g_async_initable_new_finish (G_ASYNC_INITABLE (source_object),
 872                                         res,
 873                                         error);
 874   g_object_unref (source_object);
 875
 876   if (object != NULL)
 877     return G_DBUS_OBJECT_MANAGER (object);
 878   else
 879     return NULL;
 880 }
 881
 882 /* ---------------------------------------------------------------------------------------------------- */
 883
 884 /**
 885  * g_dbus_object_manager_client_get_connection:
 886  * @manager: A #GDBusObjectManagerClient
 887  *
 888  * Gets the #GDBusConnection used by @manager.
 889  *
 890  * Returns: (transfer none): A #GDBusConnection object. Do not free,
 891  *   the object belongs to @manager.
 892  *
 893  * Since: 2.30
 894  */
 895 GDBusConnection *
 896 g_dbus_object_manager_client_get_connection (GDBusObjectManagerClient *manager)
 897 {
 898   GDBusConnection *ret;
 899   g_return_val_if_fail (G_IS_DBUS_OBJECT_MANAGER_CLIENT (manager), NULL);
 900   g_mutex_lock (&manager->priv->lock);
 901   ret = manager->priv->connection;
 902   g_mutex_unlock (&manager->priv->lock);
 903   return ret;
 904 }
 905
 906 /**
 907  * g_dbus_object_manager_client_get_name:
 908  * @manager: A #GDBusObjectManagerClient
 909  *
 910  * Gets the name that @manager is for, or %NULL if not a message bus
 911  * connection.
 912  *
 913  * Returns: A unique or well-known name. Do not free, the string
 914  * belongs to @manager.
 915  *
 916  * Since: 2.30
 917  */
 918 const gchar *
 919 g_dbus_object_manager_client_get_name (GDBusObjectManagerClient *manager)
 920 {
 921   const gchar *ret;
 922   g_return_val_if_fail (G_IS_DBUS_OBJECT_MANAGER_CLIENT (manager), NULL);
 923   g_mutex_lock (&manager->priv->lock);
 924   ret = manager->priv->name;
 925   g_mutex_unlock (&manager->priv->lock);
 926   return ret;
 927 }
 928
 929 /**
 930  * g_dbus_object_manager_client_get_flags:
 931  * @manager: A #GDBusObjectManagerClient
 932  *
 933  * Gets the flags that @manager was constructed with.
 934  *
 935  * Returns: Zero of more flags from the #GDBusObjectManagerClientFlags
 936  * enumeration.
 937  *
 938  * Since: 2.30
 939  */
 940 GDBusObjectManagerClientFlags
 941 g_dbus_object_manager_client_get_flags (GDBusObjectManagerClient *manager)
 942 {
 943   GDBusObjectManagerClientFlags ret;
 944   g_return_val_if_fail (G_IS_DBUS_OBJECT_MANAGER_CLIENT (manager), G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_NONE);
 945   g_mutex_lock (&manager->priv->lock);
 946   ret = manager->priv->flags;
 947   g_mutex_unlock (&manager->priv->lock);
 948   return ret;
 949 }
 950
 951 /**
 952  * g_dbus_object_manager_client_get_name_owner:
 953  * @manager: A #GDBusObjectManagerClient.
 954  *
 955  * The unique name that owns the name that @manager is for or %NULL if
 956  * no-one currently owns that name. You can connect to the
 957  * #GObject::notify signal to track changes to the
 958  * #GDBusObjectManagerClient:name-owner property.
 959  *
 960  * Returns: (nullable): The name owner or %NULL if no name owner
 961  * exists. Free with g_free().
 962  *
 963  * Since: 2.30
 964  */
 965 gchar *
 966 g_dbus_object_manager_client_get_name_owner (GDBusObjectManagerClient *manager)
 967 {
 968   gchar *ret;
 969   g_return_val_if_fail (G_IS_DBUS_OBJECT_MANAGER_CLIENT (manager), NULL);
 970   g_mutex_lock (&manager->priv->lock);
 971   ret = g_strdup (manager->priv->name_owner);
 972   g_mutex_unlock (&manager->priv->lock);
 973   return ret;
 974 }
 975
 976 /* ---------------------------------------------------------------------------------------------------- */
 977
 978 /* signal handler for all objects we manage - we dispatch signals
 979  * from here to the objects
 980  */
 981 static void
 982 signal_cb (GDBusConnection *connection,
 983            const gchar     *sender_name,
 984            const gchar     *object_path,
 985            const gchar     *interface_name,
 986            const gchar     *signal_name,
 987            GVariant        *parameters,
 988            gpointer         user_data)
 989 {
 990   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (user_data);
 991   GDBusObjectProxy *object_proxy;
 992   GDBusInterface *interface;
 993
 994   g_mutex_lock (&manager->priv->lock);
 995   object_proxy = g_hash_table_lookup (manager->priv->map_object_path_to_object_proxy, object_path);
 996   if (object_proxy == NULL)
 997     {
 998       g_mutex_unlock (&manager->priv->lock);
 999       goto out;
1000     }
1001   g_object_ref (object_proxy);
1002   g_mutex_unlock (&manager->priv->lock);
1003
1004   //g_debug ("yay, signal_cb %s %s: %s\n", signal_name, object_path, g_variant_print (parameters, TRUE));
1005
1006   g_object_ref (manager);
1007   if (g_strcmp0 (interface_name, "org.freedesktop.DBus.Properties") == 0)
1008     {
1009       if (g_strcmp0 (signal_name, "PropertiesChanged") == 0)
1010         {
1011           const gchar *interface_name;
1012           GVariant *changed_properties;
1013           const gchar **invalidated_properties;
1014
1015           g_variant_get (parameters,
1016                          "(&s@a{sv}^a&s)",
1017                          &interface_name,
1018                          &changed_properties,
1019                          &invalidated_properties);
1020
1021           interface = g_dbus_object_get_interface (G_DBUS_OBJECT (object_proxy), interface_name);
1022           if (interface != NULL)
1023             {
1024               GVariantIter property_iter;
1025               const gchar *property_name;
1026               GVariant *property_value;
1027               guint n;
1028
1029               /* update caches... */
1030               g_variant_iter_init (&property_iter, changed_properties);
1031               while (g_variant_iter_next (&property_iter,
1032                                           "{&sv}",
1033                                           &property_name,
1034                                           &property_value))
1035                 {
1036                   g_dbus_proxy_set_cached_property (G_DBUS_PROXY (interface),
1037                                                     property_name,
1038                                                     property_value);
1039                   g_variant_unref (property_value);
1040                 }
1041
1042               for (n = 0; invalidated_properties[n] != NULL; n++)
1043                 {
1044                   g_dbus_proxy_set_cached_property (G_DBUS_PROXY (interface),
1045                                                     invalidated_properties[n],
1046                                                     NULL);
1047                 }
1048               /* ... and then synthesize the signal */
1049               g_signal_emit_by_name (interface,
1050                                      "g-properties-changed",
1051                                      changed_properties,
1052                                      invalidated_properties);
1053               g_signal_emit (manager,
1054                              signals[INTERFACE_PROXY_PROPERTIES_CHANGED_SIGNAL],
1055                              0,
1056                              object_proxy,
1057                              interface,
1058                              changed_properties,
1059                              invalidated_properties);
1060               g_object_unref (interface);
1061             }
1062           g_variant_unref (changed_properties);
1063           g_free (invalidated_properties);
1064         }
1065     }
1066   else
1067     {
1068       /* regular signal - just dispatch it */
1069       interface = g_dbus_object_get_interface (G_DBUS_OBJECT (object_proxy), interface_name);
1070       if (interface != NULL)
1071         {
1072           g_signal_emit_by_name (interface,
1073                                  "g-signal",
1074                                  sender_name,
1075                                  signal_name,
1076                                  parameters);
1077           g_signal_emit (manager,
1078                          signals[INTERFACE_PROXY_SIGNAL_SIGNAL],
1079                          0,
1080                          object_proxy,
1081                          interface,
1082                          sender_name,
1083                          signal_name,
1084                          parameters);
1085           g_object_unref (interface);
1086         }
1087     }
1088   g_object_unref (manager);
1089
1090  out:
1091   g_clear_object (&object_proxy);
1092 }
1093
1094 static void
1095 subscribe_signals (GDBusObjectManagerClient *manager,
1096                    const gchar *name_owner)
1097 {
1098   GError *error = NULL;
1099   GVariant *ret;
1100
1101   g_return_if_fail (G_IS_DBUS_OBJECT_MANAGER_CLIENT (manager));
1102   g_return_if_fail (manager->priv->signal_subscription_id == 0);
1103   g_return_if_fail (name_owner == NULL || g_dbus_is_unique_name (name_owner));
1104
1105   if (name_owner != NULL)
1106     {
1107       /* Only add path_namespace if it's non-'/'. This removes a no-op key from
1108        * the match rule, and also works around a D-Bus bug where
1109        * path_namespace='/' matches nothing in D-Bus versions < 1.6.18.
1110        *
1111        * See: https://bugs.freedesktop.org/show_bug.cgi?id=70799 */
1112       if (g_str_equal (manager->priv->object_path, "/"))
1113         {
1114           manager->priv->match_rule = g_strdup_printf ("type='signal',sender='%s'",
1115                                                        name_owner);
1116         }
1117       else
1118         {
1119           manager->priv->match_rule = g_strdup_printf ("type='signal',sender='%s',path_namespace='%s'",
1120                                                        name_owner, manager->priv->object_path);
1121         }
1122
1123       /* The bus daemon may not implement path_namespace so gracefully
1124        * handle this by using a fallback triggered if @error is set. */
1125       ret = g_dbus_connection_call_sync (manager->priv->connection,
1126                                          "org.freedesktop.DBus",
1127                                          "/org/freedesktop/DBus",
1128                                          "org.freedesktop.DBus",
1129                                          "AddMatch",
1130                                          g_variant_new ("(s)",
1131                                                         manager->priv->match_rule),
1132                                          NULL, /* reply_type */
1133                                          G_DBUS_CALL_FLAGS_NONE,
1134                                          -1, /* default timeout */
1135                                          NULL, /* TODO: Cancellable */
1136                                          &error);
1137
1138       /* yay, bus daemon supports path_namespace */
1139       if (ret != NULL)
1140         g_variant_unref (ret);
1141     }
1142
1143   if (error == NULL)
1144     {
1145       /* still need to ask GDBusConnection for the callbacks */
1146       manager->priv->signal_subscription_id =
1147         g_dbus_connection_signal_subscribe (manager->priv->connection,
1148                                             name_owner,
1149                                             NULL, /* interface */
1150                                             NULL, /* member */
1151                                             NULL, /* path - TODO: really want wilcard support here */
1152                                             NULL, /* arg0 */
1153                                             G_DBUS_SIGNAL_FLAGS_NONE |
1154                                             G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE,
1155                                             signal_cb,
1156                                             manager,
1157                                             NULL); /* user_data_free_func */
1158
1159     }
1160   else
1161     {
1162       /* TODO: we could report this to the user
1163       g_warning ("Message bus daemon does not support path_namespace: %s (%s %d)",
1164                  error->message,
1165                  g_quark_to_string (error->domain),
1166                  error->code);
1167       */
1168
1169       g_error_free (error);
1170
1171       /* no need to call RemoveMatch when done since it didn't work */
1172       g_free (manager->priv->match_rule);
1173       manager->priv->match_rule = NULL;
1174
1175       /* Fallback is to subscribe to *all* signals from the name owner which
1176        * is rather wasteful. It's probably not a big practical problem because
1177        * users typically want all objects that the name owner supplies.
1178        */
1179       manager->priv->signal_subscription_id =
1180         g_dbus_connection_signal_subscribe (manager->priv->connection,
1181                                             name_owner,
1182                                             NULL, /* interface */
1183                                             NULL, /* member */
1184                                             NULL, /* path - TODO: really want wilcard support here */
1185                                             NULL, /* arg0 */
1186                                             G_DBUS_SIGNAL_FLAGS_NONE,
1187                                             signal_cb,
1188                                             manager,
1189                                             NULL); /* user_data_free_func */
1190     }
1191 }
1192
1193 static void
1194 maybe_unsubscribe_signals (GDBusObjectManagerClient *manager)
1195 {
1196   g_return_if_fail (G_IS_DBUS_OBJECT_MANAGER_CLIENT (manager));
1197
1198   if (manager->priv->signal_subscription_id > 0)
1199     {
1200       g_dbus_connection_signal_unsubscribe (manager->priv->connection,
1201                                             manager->priv->signal_subscription_id);
1202       manager->priv->signal_subscription_id = 0;
1203     }
1204
1205   if (manager->priv->match_rule != NULL)
1206     {
1207       /* Since the AddMatch call succeeded this is guaranteed to not
1208        * fail - therefore, don't bother checking the return value
1209        */
1210       g_dbus_connection_call (manager->priv->connection,
1211                               "org.freedesktop.DBus",
1212                               "/org/freedesktop/DBus",
1213                               "org.freedesktop.DBus",
1214                               "RemoveMatch",
1215                               g_variant_new ("(s)",
1216                                              manager->priv->match_rule),
1217                               NULL, /* reply_type */
1218                               G_DBUS_CALL_FLAGS_NONE,
1219                               -1, /* default timeout */
1220                               NULL, /* GCancellable */
1221                               NULL, /* GAsyncReadyCallback */
1222                               NULL); /* user data */
1223       g_free (manager->priv->match_rule);
1224       manager->priv->match_rule = NULL;
1225     }
1226
1227 }
1228
1229 /* ---------------------------------------------------------------------------------------------------- */
1230
1231 static void
1232 on_notify_g_name_owner (GObject    *object,
1233                         GParamSpec *pspec,
1234                         gpointer    user_data)
1235 {
1236   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (user_data);
1237   gchar *old_name_owner;
1238   gchar *new_name_owner;
1239
1240   g_mutex_lock (&manager->priv->lock);
1241   old_name_owner = manager->priv->name_owner;
1242   new_name_owner = g_dbus_proxy_get_name_owner (manager->priv->control_proxy);
1243   manager->priv->name_owner = NULL;
1244
1245   g_object_ref (manager);
1246   if (g_strcmp0 (old_name_owner, new_name_owner) != 0)
1247     {
1248       GList *l;
1249       GList *proxies;
1250
1251       /* remote manager changed; nuke all local proxies  */
1252       proxies = g_hash_table_get_values (manager->priv->map_object_path_to_object_proxy);
1253       g_list_foreach (proxies, (GFunc) g_object_ref, NULL);
1254       g_hash_table_remove_all (manager->priv->map_object_path_to_object_proxy);
1255
1256       g_mutex_unlock (&manager->priv->lock);
1257
1258       /* do the :name-owner notify with a NULL name - this way the user knows
1259        * the ::object-proxy-removed following is because the name owner went
1260        * away
1261        */
1262       g_object_notify (G_OBJECT (manager), "name-owner");
1263
1264       for (l = proxies; l != NULL; l = l->next)
1265         {
1266           GDBusObjectProxy *object_proxy = G_DBUS_OBJECT_PROXY (l->data);
1267           g_signal_emit_by_name (manager, "object-removed", object_proxy);
1268         }
1269       g_list_free_full (proxies, g_object_unref);
1270
1271       /* nuke local filter */
1272       maybe_unsubscribe_signals (manager);
1273     }
1274   else
1275     {
1276       g_mutex_unlock (&manager->priv->lock);
1277     }
1278
1279   if (new_name_owner != NULL)
1280     {
1281       GError *error;
1282       GVariant *value;
1283
1284       //g_debug ("repopulating for %s", new_name_owner);
1285
1286       /* TODO: do this async! */
1287       subscribe_signals (manager,
1288                          new_name_owner);
1289       error = NULL;
1290       value = g_dbus_proxy_call_sync (manager->priv->control_proxy,
1291                                       "GetManagedObjects",
1292                                       NULL, /* parameters */
1293                                       G_DBUS_CALL_FLAGS_NONE,
1294                                       -1,
1295                                       NULL,
1296                                       &error);
1297       if (value == NULL)
1298         {
1299           maybe_unsubscribe_signals (manager);
1300           g_warning ("Error calling GetManagedObjects() when name owner %s for name %s came back: %s",
1301                      new_name_owner,
1302                      manager->priv->name,
1303                      error->message);
1304           g_error_free (error);
1305         }
1306       else
1307         {
1308           process_get_all_result (manager, value, new_name_owner);
1309           g_variant_unref (value);
1310         }
1311
1312       /* do the :name-owner notify *AFTER* emitting ::object-proxy-added signals - this
1313        * way the user knows that the signals were emitted because the name owner came back
1314        */
1315       g_mutex_lock (&manager->priv->lock);
1316       manager->priv->name_owner = new_name_owner;
1317       g_mutex_unlock (&manager->priv->lock);
1318       g_object_notify (G_OBJECT (manager), "name-owner");
1319
1320     }
1321   g_free (old_name_owner);
1322   g_object_unref (manager);
1323 }
1324
1325 static gboolean
1326 initable_init (GInitable     *initable,
1327                GCancellable  *cancellable,
1328                GError       **error)
1329 {
1330   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (initable);
1331   gboolean ret;
1332   GVariant *value;
1333   GDBusProxyFlags proxy_flags;
1334
1335   ret = FALSE;
1336
1337   if (manager->priv->bus_type != G_BUS_TYPE_NONE)
1338     {
1339       g_assert (manager->priv->connection == NULL);
1340       manager->priv->connection = g_bus_get_sync (manager->priv->bus_type, cancellable, error);
1341       if (manager->priv->connection == NULL)
1342         goto out;
1343     }
1344
1345   proxy_flags = G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES;
1346   if (manager->priv->flags & G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_DO_NOT_AUTO_START)
1347     proxy_flags |= G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START;
1348
1349   manager->priv->control_proxy = g_dbus_proxy_new_sync (manager->priv->connection,
1350                                                         proxy_flags,
1351                                                         NULL, /* GDBusInterfaceInfo* */
1352                                                         manager->priv->name,
1353                                                         manager->priv->object_path,
1354                                                         "org.freedesktop.DBus.ObjectManager",
1355                                                         cancellable,
1356                                                         error);
1357   if (manager->priv->control_proxy == NULL)
1358     goto out;
1359
1360   g_signal_connect (G_OBJECT (manager->priv->control_proxy),
1361                     "notify::g-name-owner",
1362                     G_CALLBACK (on_notify_g_name_owner),
1363                     manager);
1364
1365   g_signal_connect (manager->priv->control_proxy,
1366                     "g-signal",
1367                     G_CALLBACK (on_control_proxy_g_signal),
1368                     manager);
1369
1370   manager->priv->name_owner = g_dbus_proxy_get_name_owner (manager->priv->control_proxy);
1371   if (manager->priv->name_owner == NULL && manager->priv->name != NULL)
1372     {
1373       /* it's perfectly fine if there's no name owner.. we're just going to
1374        * wait until one is ready
1375        */
1376     }
1377   else
1378     {
1379       /* yay, we can get the objects */
1380       subscribe_signals (manager,
1381                          manager->priv->name_owner);
1382       value = g_dbus_proxy_call_sync (manager->priv->control_proxy,
1383                                       "GetManagedObjects",
1384                                       NULL, /* parameters */
1385                                       G_DBUS_CALL_FLAGS_NONE,
1386                                       -1,
1387                                       cancellable,
1388                                       error);
1389       if (value == NULL)
1390         {
1391           maybe_unsubscribe_signals (manager);
1392           g_warn_if_fail (g_signal_handlers_disconnect_by_func (manager->priv->control_proxy,
1393                                                                 on_control_proxy_g_signal,
1394                                                                 manager) == 1);
1395           g_object_unref (manager->priv->control_proxy);
1396           manager->priv->control_proxy = NULL;
1397           goto out;
1398         }
1399
1400       process_get_all_result (manager, value, manager->priv->name_owner);
1401       g_variant_unref (value);
1402     }
1403
1404   ret = TRUE;
1405
1406  out:
1407   return ret;
1408 }
1409
1410 static void
1411 initable_iface_init (GInitableIface *initable_iface)
1412 {
1413   initable_iface->init = initable_init;
1414 }
1415
1416 static void
1417 async_initable_iface_init (GAsyncInitableIface *async_initable_iface)
1418 {
1419   /* for now, just use default: run GInitable code in thread */
1420 }
1421
1422 /* ---------------------------------------------------------------------------------------------------- */
1423
1424 static void
1425 add_interfaces (GDBusObjectManagerClient *manager,
1426                 const gchar       *object_path,
1427                 GVariant          *ifaces_and_properties,
1428                 const gchar       *name_owner)
1429 {
1430   GDBusObjectProxy *op;
1431   gboolean added;
1432   GVariantIter iter;
1433   const gchar *interface_name;
1434   GVariant *properties;
1435   GList *interface_added_signals, *l;
1436   GDBusProxy *interface_proxy;
1437
1438   g_return_if_fail (name_owner == NULL || g_dbus_is_unique_name (name_owner));
1439
1440   g_mutex_lock (&manager->priv->lock);
1441
1442   interface_added_signals = NULL;
1443   added = FALSE;
1444
1445   op = g_hash_table_lookup (manager->priv->map_object_path_to_object_proxy, object_path);
1446   if (op == NULL)
1447     {
1448       GType object_proxy_type;
1449       if (manager->priv->get_proxy_type_func != NULL)
1450         {
1451           object_proxy_type = manager->priv->get_proxy_type_func (manager,
1452                                                                   object_path,
1453                                                                   NULL,
1454                                                                   manager->priv->get_proxy_type_user_data);
1455           g_warn_if_fail (g_type_is_a (object_proxy_type, G_TYPE_DBUS_OBJECT_PROXY));
1456         }
1457       else
1458         {
1459           object_proxy_type = G_TYPE_DBUS_OBJECT_PROXY;
1460         }
1461       op = g_object_new (object_proxy_type,
1462                          "g-connection", manager->priv->connection,
1463                          "g-object-path", object_path,
1464                          NULL);
1465       added = TRUE;
1466     }
1467   g_object_ref (op);
1468
1469   g_variant_iter_init (&iter, ifaces_and_properties);
1470   while (g_variant_iter_next (&iter,
1471                               "{&s@a{sv}}",
1472                               &interface_name,
1473                               &properties))
1474     {
1475       GError *error;
1476       GType interface_proxy_type;
1477
1478       if (manager->priv->get_proxy_type_func != NULL)
1479         {
1480           interface_proxy_type = manager->priv->get_proxy_type_func (manager,
1481                                                                      object_path,
1482                                                                      interface_name,
1483                                                                      manager->priv->get_proxy_type_user_data);
1484           g_warn_if_fail (g_type_is_a (interface_proxy_type, G_TYPE_DBUS_PROXY));
1485         }
1486       else
1487         {
1488           interface_proxy_type = G_TYPE_DBUS_PROXY;
1489         }
1490
1491       /* this is fine - there is no blocking IO because we pass DO_NOT_LOAD_PROPERTIES and
1492        * DO_NOT_CONNECT_SIGNALS and use a unique name
1493        */
1494       error = NULL;
1495       interface_proxy = g_initable_new (interface_proxy_type,
1496                                         NULL, /* GCancellable */
1497                                         &error,
1498                                         "g-connection", manager->priv->connection,
1499                                         "g-flags", G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES |
1500                                                    G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS,
1501                                         "g-name", name_owner,
1502                                         "g-object-path", object_path,
1503                                         "g-interface-name", interface_name,
1504                                         NULL);
1505       if (interface_proxy == NULL)
1506         {
1507           g_warning ("%s: Error constructing proxy for path %s and interface %s: %s",
1508                      G_STRLOC,
1509                      object_path,
1510                      interface_name,
1511                      error->message);
1512           g_error_free (error);
1513         }
1514       else
1515         {
1516           GVariantIter property_iter;
1517           const gchar *property_name;
1518           GVariant *property_value;
1519
1520           /* associate the interface proxy with the object */
1521           g_dbus_interface_set_object (G_DBUS_INTERFACE (interface_proxy),
1522                                        G_DBUS_OBJECT (op));
1523
1524           g_variant_iter_init (&property_iter, properties);
1525           while (g_variant_iter_next (&property_iter,
1526                                       "{&sv}",
1527                                       &property_name,
1528                                       &property_value))
1529             {
1530               g_dbus_proxy_set_cached_property (interface_proxy,
1531                                                 property_name,
1532                                                 property_value);
1533               g_variant_unref (property_value);
1534             }
1535
1536           _g_dbus_object_proxy_add_interface (op, interface_proxy);
1537           if (!added)
1538             interface_added_signals = g_list_append (interface_added_signals, g_object_ref (interface_proxy));
1539           g_object_unref (interface_proxy);
1540         }
1541       g_variant_unref (properties);
1542     }
1543
1544   g_mutex_unlock (&manager->priv->lock);
1545
1546   /* now that we don't hold the lock any more, emit signals */
1547   g_object_ref (manager);
1548   for (l = interface_added_signals; l != NULL; l = l->next)
1549     {
1550       interface_proxy = G_DBUS_PROXY (l->data);
1551       g_signal_emit_by_name (manager, "interface-added", op, interface_proxy);
1552       g_object_unref (interface_proxy);
1553     }
1554   g_list_free (interface_added_signals);
1555
1556   if (added)
1557     {
1558       g_hash_table_insert (manager->priv->map_object_path_to_object_proxy,
1559                            g_strdup (object_path),
1560                            op);
1561       g_signal_emit_by_name (manager, "object-added", op);
1562     }
1563   g_object_unref (manager);
1564   g_object_unref (op);
1565 }
1566
1567 static void
1568 remove_interfaces (GDBusObjectManagerClient   *manager,
1569                    const gchar         *object_path,
1570                    const gchar *const  *interface_names)
1571 {
1572   GDBusObjectProxy *op;
1573   GList *interfaces;
1574   guint n;
1575   guint num_interfaces;
1576   guint num_interfaces_to_remove;
1577
1578   g_mutex_lock (&manager->priv->lock);
1579
1580   op = g_hash_table_lookup (manager->priv->map_object_path_to_object_proxy, object_path);
1581   if (op == NULL)
1582     {
1583       g_warning ("%s: Processing InterfaceRemoved signal for path %s but no object proxy exists",
1584                  G_STRLOC,
1585                  object_path);
1586       g_mutex_unlock (&manager->priv->lock);
1587       goto out;
1588     }
1589
1590   interfaces = g_dbus_object_get_interfaces (G_DBUS_OBJECT (op));
1591   num_interfaces = g_list_length (interfaces);
1592   g_list_free_full (interfaces, g_object_unref);
1593
1594   num_interfaces_to_remove = g_strv_length ((gchar **) interface_names);
1595
1596   /* see if we are going to completety remove the object */
1597   g_object_ref (manager);
1598   if (num_interfaces_to_remove == num_interfaces)
1599     {
1600       g_object_ref (op);
1601       g_warn_if_fail (g_hash_table_remove (manager->priv->map_object_path_to_object_proxy, object_path));
1602       g_mutex_unlock (&manager->priv->lock);
1603       g_signal_emit_by_name (manager, "object-removed", op);
1604       g_object_unref (op);
1605     }
1606   else
1607     {
1608       g_object_ref (op);
1609       g_mutex_unlock (&manager->priv->lock);
1610       for (n = 0; interface_names != NULL && interface_names[n] != NULL; n++)
1611         {
1612           GDBusInterface *interface;
1613           interface = g_dbus_object_get_interface (G_DBUS_OBJECT (op), interface_names[n]);
1614           _g_dbus_object_proxy_remove_interface (op, interface_names[n]);
1615           if (interface != NULL)
1616             {
1617               g_signal_emit_by_name (manager, "interface-removed", op, interface);
1618               g_object_unref (interface);
1619             }
1620         }
1621       g_object_unref (op);
1622     }
1623   g_object_unref (manager);
1624  out:
1625   ;
1626 }
1627
1628 static void
1629 process_get_all_result (GDBusObjectManagerClient *manager,
1630                         GVariant          *value,
1631                         const gchar       *name_owner)
1632 {
1633   GVariant *arg0;
1634   const gchar *object_path;
1635   GVariant *ifaces_and_properties;
1636   GVariantIter iter;
1637
1638   g_return_if_fail (name_owner == NULL || g_dbus_is_unique_name (name_owner));
1639
1640   arg0 = g_variant_get_child_value (value, 0);
1641   g_variant_iter_init (&iter, arg0);
1642   while (g_variant_iter_next (&iter,
1643                               "{&o@a{sa{sv}}}",
1644                               &object_path,
1645                               &ifaces_and_properties))
1646     {
1647       add_interfaces (manager, object_path, ifaces_and_properties, name_owner);
1648       g_variant_unref (ifaces_and_properties);
1649     }
1650   g_variant_unref (arg0);
1651 }
1652
1653 static void
1654 on_control_proxy_g_signal (GDBusProxy   *proxy,
1655                            const gchar  *sender_name,
1656                            const gchar  *signal_name,
1657                            GVariant     *parameters,
1658                            gpointer      user_data)
1659 {
1660   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (user_data);
1661   const gchar *object_path;
1662
1663   //g_debug ("yay, g_signal %s: %s\n", signal_name, g_variant_print (parameters, TRUE));
1664
1665   if (g_strcmp0 (signal_name, "InterfacesAdded") == 0)
1666     {
1667       GVariant *ifaces_and_properties;
1668       g_variant_get (parameters,
1669                      "(&o@a{sa{sv}})",
1670                      &object_path,
1671                      &ifaces_and_properties);
1672       add_interfaces (manager, object_path, ifaces_and_properties, manager->priv->name_owner);
1673       g_variant_unref (ifaces_and_properties);
1674     }
1675   else if (g_strcmp0 (signal_name, "InterfacesRemoved") == 0)
1676     {
1677       const gchar **ifaces;
1678       g_variant_get (parameters,
1679                      "(&o^a&s)",
1680                      &object_path,
1681                      &ifaces);
1682       remove_interfaces (manager, object_path, ifaces);
1683       g_free (ifaces);
1684     }
1685 }
1686
1687 /* ---------------------------------------------------------------------------------------------------- */
1688
1689 static const gchar *
1690 g_dbus_object_manager_client_get_object_path (GDBusObjectManager *_manager)
1691 {
1692   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (_manager);
1693   return manager->priv->object_path;
1694 }
1695
1696 static GDBusObject *
1697 g_dbus_object_manager_client_get_object (GDBusObjectManager *_manager,
1698                                          const gchar        *object_path)
1699 {
1700   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (_manager);
1701   GDBusObject *ret;
1702
1703   g_mutex_lock (&manager->priv->lock);
1704   ret = g_hash_table_lookup (manager->priv->map_object_path_to_object_proxy, object_path);
1705   if (ret != NULL)
1706     g_object_ref (ret);
1707   g_mutex_unlock (&manager->priv->lock);
1708   return ret;
1709 }
1710
1711 static GDBusInterface *
1712 g_dbus_object_manager_client_get_interface  (GDBusObjectManager  *_manager,
1713                                              const gchar         *object_path,
1714                                              const gchar         *interface_name)
1715 {
1716   GDBusInterface *ret;
1717   GDBusObject *object;
1718
1719   ret = NULL;
1720
1721   object = g_dbus_object_manager_get_object (_manager, object_path);
1722   if (object == NULL)
1723     goto out;
1724
1725   ret = g_dbus_object_get_interface (object, interface_name);
1726   g_object_unref (object);
1727
1728  out:
1729   return ret;
1730 }
1731
1732 static GList *
1733 g_dbus_object_manager_client_get_objects (GDBusObjectManager *_manager)
1734 {
1735   GDBusObjectManagerClient *manager = G_DBUS_OBJECT_MANAGER_CLIENT (_manager);
1736   GList *ret;
1737
1738   g_return_val_if_fail (G_IS_DBUS_OBJECT_MANAGER_CLIENT (manager), NULL);
1739
1740   g_mutex_lock (&manager->priv->lock);
1741   ret = g_hash_table_get_values (manager->priv->map_object_path_to_object_proxy);
1742   g_list_foreach (ret, (GFunc) g_object_ref, NULL);
1743   g_mutex_unlock (&manager->priv->lock);
1744
1745   return ret;
1746 }
1747
1748
1749 static void
1750 dbus_object_manager_interface_init (GDBusObjectManagerIface *iface)
1751 {
1752   iface->get_object_path = g_dbus_object_manager_client_get_object_path;
1753   iface->get_objects     = g_dbus_object_manager_client_get_objects;
1754   iface->get_object      = g_dbus_object_manager_client_get_object;
1755   iface->get_interface   = g_dbus_object_manager_client_get_interface;
1756 }
1757
1758 /* ---------------------------------------------------------------------------------------------------- */