gio/gapplicationimpl-dbus.c

   1 /*
   2  * Copyright © 2010 Codethink Limited
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General
  15  * Public License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  *
  19  * Authors: Ryan Lortie <desrt@desrt.ca>
  20  */
  21
  22 #include "config.h"
  23
  24 #include "gapplicationimpl.h"
  25
  26 #include "gactiongroup.h"
  27 #include "gactiongroupexporter.h"
  28 #include "gremoteactiongroup.h"
  29 #include "gdbusactiongroup-private.h"
  30 #include "gapplication.h"
  31 #include "gfile.h"
  32 #include "gdbusconnection.h"
  33 #include "gdbusintrospection.h"
  34 #include "gdbuserror.h"
  35 #include "glib/gstdio.h"
  36
  37 #include <string.h>
  38 #include <stdio.h>
  39
  40 #include "gapplicationcommandline.h"
  41 #include "gdbusmethodinvocation.h"
  42
  43 #ifdef G_OS_UNIX
  44 #include "gunixinputstream.h"
  45 #include "gunixfdlist.h"
  46 #endif
  47
  48 /* DBus Interface definition {{{1 */
  49
  50 /* For documentation of these interfaces, see
  51  * http://live.gnome.org/GTK+/GApplication-dbus-apis
  52  */
  53 static const gchar org_gtk_Application_xml[] =
  54   "<node>"
  55     "<interface name='org.gtk.Application'>"
  56       "<method name='Activate'>"
  57         "<arg type='a{sv}' name='platform-data' direction='in'/>"
  58       "</method>"
  59       "<method name='Open'>"
  60         "<arg type='as' name='uris' direction='in'/>"
  61         "<arg type='s' name='hint' direction='in'/>"
  62         "<arg type='a{sv}' name='platform-data' direction='in'/>"
  63       "</method>"
  64       "<method name='CommandLine'>"
  65         "<arg type='o' name='path' direction='in'/>"
  66         "<arg type='aay' name='arguments' direction='in'/>"
  67         "<arg type='a{sv}' name='platform-data' direction='in'/>"
  68         "<arg type='i' name='exit-status' direction='out'/>"
  69       "</method>"
  70     "<property name='Busy' type='b' access='read'/>"
  71     "</interface>"
  72   "</node>";
  73
  74 static GDBusInterfaceInfo *org_gtk_Application;
  75
  76 static const gchar org_freedesktop_Application_xml[] =
  77   "<node>"
  78     "<interface name='org.freedesktop.Application'>"
  79       "<method name='Activate'>"
  80         "<arg type='a{sv}' name='platform-data' direction='in'/>"
  81       "</method>"
  82       "<method name='Open'>"
  83         "<arg type='as' name='uris' direction='in'/>"
  84         "<arg type='a{sv}' name='platform-data' direction='in'/>"
  85       "</method>"
  86       "<method name='ActivateAction'>"
  87         "<arg type='s' name='action-name' direction='in'/>"
  88         "<arg type='av' name='parameter' direction='in'/>"
  89         "<arg type='a{sv}' name='platform-data' direction='in'/>"
  90       "</method>"
  91     "</interface>"
  92   "</node>";
  93
  94 static GDBusInterfaceInfo *org_freedesktop_Application;
  95
  96 static const gchar org_gtk_private_CommandLine_xml[] =
  97   "<node>"
  98     "<interface name='org.gtk.private.CommandLine'>"
  99       "<method name='Print'>"
 100         "<arg type='s' name='message' direction='in'/>"
 101       "</method>"
 102       "<method name='PrintError'>"
 103         "<arg type='s' name='message' direction='in'/>"
 104       "</method>"
 105     "</interface>"
 106   "</node>";
 107
 108 static GDBusInterfaceInfo *org_gtk_private_CommandLine;
 109
 110 /* GApplication implementation {{{1 */
 111 struct _GApplicationImpl
 112 {
 113   GDBusConnection *session_bus;
 114   GActionGroup    *exported_actions;
 115   const gchar     *bus_name;
 116
 117   gchar           *object_path;
 118   guint            object_id;
 119   guint            fdo_object_id;
 120   guint            actions_id;
 121
 122   gboolean         properties_live;
 123   gboolean         primary;
 124   gboolean         busy;
 125   GApplication    *app;
 126 };
 127
 128
 129 static GApplicationCommandLine *
 130 g_dbus_command_line_new (GDBusMethodInvocation *invocation);
 131
 132 static GVariant *
 133 g_application_impl_get_property (GDBusConnection *connection,
 134                                  const gchar  *sender,
 135                                  const gchar  *object_path,
 136                                  const gchar  *interface_name,
 137                                  const gchar  *property_name,
 138                                  GError      **error,
 139                                  gpointer      user_data)
 140 {
 141   GApplicationImpl *impl = user_data;
 142
 143   if (strcmp (property_name, "Busy") == 0)
 144     return g_variant_new_boolean (impl->busy);
 145
 146   g_assert_not_reached ();
 147
 148   return NULL;
 149 }
 150
 151 static void
 152 send_property_change (GApplicationImpl *impl)
 153 {
 154   GVariantBuilder builder;
 155
 156   g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
 157   g_variant_builder_add (&builder,
 158                          "{sv}",
 159                          "Busy", g_variant_new_boolean (impl->busy));
 160
 161   g_dbus_connection_emit_signal (impl->session_bus,
 162                                  NULL,
 163                                  impl->object_path,
 164                                  "org.freedesktop.DBus.Properties",
 165                                  "PropertiesChanged",
 166                                  g_variant_new ("(sa{sv}as)",
 167                                                 "org.gtk.Application",
 168                                                 &builder,
 169                                                 NULL),
 170                                  NULL);
 171 }
 172
 173 static void
 174 g_application_impl_method_call (GDBusConnection       *connection,
 175                                 const gchar           *sender,
 176                                 const gchar           *object_path,
 177                                 const gchar           *interface_name,
 178                                 const gchar           *method_name,
 179                                 GVariant              *parameters,
 180                                 GDBusMethodInvocation *invocation,
 181                                 gpointer               user_data)
 182 {
 183   GApplicationImpl *impl = user_data;
 184   GApplicationClass *class;
 185
 186   class = G_APPLICATION_GET_CLASS (impl->app);
 187
 188   if (strcmp (method_name, "Activate") == 0)
 189     {
 190       GVariant *platform_data;
 191
 192       /* Completely the same for both freedesktop and gtk interfaces */
 193
 194       g_variant_get (parameters, "(@a{sv})", &platform_data);
 195
 196       class->before_emit (impl->app, platform_data);
 197       g_signal_emit_by_name (impl->app, "activate");
 198       class->after_emit (impl->app, platform_data);
 199       g_variant_unref (platform_data);
 200
 201       g_dbus_method_invocation_return_value (invocation, NULL);
 202     }
 203
 204   else if (strcmp (method_name, "Open") == 0)
 205     {
 206       GVariant *platform_data;
 207       const gchar *hint;
 208       GVariant *array;
 209       GFile **files;
 210       gint n, i;
 211
 212       /* freedesktop interface has no hint parameter */
 213       if (g_str_equal (interface_name, "org.freedesktop.Application"))
 214         {
 215           g_variant_get (parameters, "(@as@a{sv})", &array, &platform_data);
 216           hint = "";
 217         }
 218       else
 219         g_variant_get (parameters, "(@as&s@a{sv})", &array, &hint, &platform_data);
 220
 221       n = g_variant_n_children (array);
 222       files = g_new (GFile *, n + 1);
 223
 224       for (i = 0; i < n; i++)
 225         {
 226           const gchar *uri;
 227
 228           g_variant_get_child (array, i, "&s", &uri);
 229           files[i] = g_file_new_for_uri (uri);
 230         }
 231       g_variant_unref (array);
 232       files[n] = NULL;
 233
 234       class->before_emit (impl->app, platform_data);
 235       g_signal_emit_by_name (impl->app, "open", files, n, hint);
 236       class->after_emit (impl->app, platform_data);
 237
 238       g_variant_unref (platform_data);
 239
 240       for (i = 0; i < n; i++)
 241         g_object_unref (files[i]);
 242       g_free (files);
 243
 244       g_dbus_method_invocation_return_value (invocation, NULL);
 245     }
 246
 247   else if (strcmp (method_name, "CommandLine") == 0)
 248     {
 249       GApplicationCommandLine *cmdline;
 250       GVariant *platform_data;
 251       int status;
 252
 253       /* Only on the GtkApplication interface */
 254
 255       cmdline = g_dbus_command_line_new (invocation);
 256       platform_data = g_variant_get_child_value (parameters, 2);
 257       class->before_emit (impl->app, platform_data);
 258       g_signal_emit_by_name (impl->app, "command-line", cmdline, &status);
 259       g_application_command_line_set_exit_status (cmdline, status);
 260       class->after_emit (impl->app, platform_data);
 261       g_variant_unref (platform_data);
 262       g_object_unref (cmdline);
 263     }
 264   else if (g_str_equal (method_name, "ActivateAction"))
 265     {
 266       GVariant *parameter = NULL;
 267       GVariant *platform_data;
 268       GVariantIter *iter;
 269       const gchar *name;
 270
 271       /* Only on the freedesktop interface */
 272
 273       g_variant_get (parameters, "(&sav@a{sv})", &name, &iter, &platform_data);
 274       g_variant_iter_next (iter, "v", &parameter);
 275       g_variant_iter_free (iter);
 276
 277       class->before_emit (impl->app, platform_data);
 278       g_action_group_activate_action (impl->exported_actions, name, parameter);
 279       class->after_emit (impl->app, platform_data);
 280
 281       if (parameter)
 282         g_variant_unref (parameter);
 283
 284       g_variant_unref (platform_data);
 285     }
 286   else
 287     g_assert_not_reached ();
 288 }
 289
 290 static gchar *
 291 application_path_from_appid (const gchar *appid)
 292 {
 293   gchar *appid_path, *iter;
 294
 295   if (appid == NULL)
 296     /* this is a private implementation detail */
 297     return g_strdup ("/org/gtk/Application/anonymous");
 298
 299   appid_path = g_strconcat ("/", appid, NULL);
 300   for (iter = appid_path; *iter; iter++)
 301     {
 302       if (*iter == '.')
 303         *iter = '/';
 304
 305       if (*iter == '-')
 306         *iter = '_';
 307     }
 308
 309   return appid_path;
 310 }
 311
 312 /* Attempt to become the primary instance.
 313  *
 314  * Returns %TRUE if everything went OK, regardless of if we became the
 315  * primary instance or not.  %FALSE is reserved for when something went
 316  * seriously wrong (and @error will be set too, in that case).
 317  *
 318  * After a %TRUE return, impl->primary will be TRUE if we were
 319  * successful.
 320  */
 321 static gboolean
 322 g_application_impl_attempt_primary (GApplicationImpl  *impl,
 323                                     GCancellable      *cancellable,
 324                                     GError           **error)
 325 {
 326   const static GDBusInterfaceVTable vtable = {
 327     g_application_impl_method_call,
 328     g_application_impl_get_property,
 329     NULL /* set_property */
 330   };
 331   GApplicationClass *app_class = G_APPLICATION_GET_CLASS (impl->app);
 332   GVariant *reply;
 333   guint32 rval;
 334
 335   if (org_gtk_Application == NULL)
 336     {
 337       GError *error = NULL;
 338       GDBusNodeInfo *info;
 339
 340       info = g_dbus_node_info_new_for_xml (org_gtk_Application_xml, &error);
 341       if G_UNLIKELY (info == NULL)
 342         g_error ("%s", error->message);
 343       org_gtk_Application = g_dbus_node_info_lookup_interface (info, "org.gtk.Application");
 344       g_assert (org_gtk_Application != NULL);
 345       g_dbus_interface_info_ref (org_gtk_Application);
 346       g_dbus_node_info_unref (info);
 347
 348       info = g_dbus_node_info_new_for_xml (org_freedesktop_Application_xml, &error);
 349       if G_UNLIKELY (info == NULL)
 350         g_error ("%s", error->message);
 351       org_freedesktop_Application = g_dbus_node_info_lookup_interface (info, "org.freedesktop.Application");
 352       g_assert (org_freedesktop_Application != NULL);
 353       g_dbus_interface_info_ref (org_freedesktop_Application);
 354       g_dbus_node_info_unref (info);
 355     }
 356
 357   /* We could possibly have been D-Bus activated as a result of incoming
 358    * requests on either the application or actiongroup interfaces.
 359    * Because of how GDBus dispatches messages, we need to ensure that
 360    * both of those things are registered before we attempt to request
 361    * our name.
 362    *
 363    * The action group need not be populated yet, as long as it happens
 364    * before we return to the mainloop.  The reason for that is because
 365    * GDBus does the check to make sure the object exists from the worker
 366    * thread but doesn't actually dispatch the action invocation until we
 367    * hit the mainloop in this thread.  There is also no danger of
 368    * receiving 'activate' or 'open' signals until after 'startup' runs,
 369    * for the same reason.
 370    */
 371   impl->object_id = g_dbus_connection_register_object (impl->session_bus, impl->object_path,
 372                                                        org_gtk_Application, &vtable, impl, NULL, error);
 373
 374   if (impl->object_id == 0)
 375     return FALSE;
 376
 377   impl->fdo_object_id = g_dbus_connection_register_object (impl->session_bus, impl->object_path,
 378                                                            org_freedesktop_Application, &vtable, impl, NULL, error);
 379
 380   if (impl->fdo_object_id == 0)
 381     return FALSE;
 382
 383   impl->actions_id = g_dbus_connection_export_action_group (impl->session_bus, impl->object_path,
 384                                                             impl->exported_actions, error);
 385
 386   if (impl->actions_id == 0)
 387     return FALSE;
 388
 389   if (!app_class->dbus_register (impl->app,
 390                                  impl->session_bus,
 391                                  impl->object_path,
 392                                  error))
 393     return FALSE;
 394
 395   if (impl->bus_name == NULL)
 396     {
 397       /* If this is a non-unique application then it is sufficient to
 398        * have our object paths registered. We can return now.
 399        *
 400        * Note: non-unique applications always act as primary-instance.
 401        */
 402       impl->primary = TRUE;
 403       return TRUE;
 404     }
 405
 406   /* If this is a unique application then we need to attempt to own
 407    * the well-known name and fall back to remote mode (!is_primary)
 408    * in the case that we can't do that.
 409    */
 410   /* DBUS_NAME_FLAG_DO_NOT_QUEUE: 0x4 */
 411   reply = g_dbus_connection_call_sync (impl->session_bus, "org.freedesktop.DBus", "/org/freedesktop/DBus",
 412                                        "org.freedesktop.DBus", "RequestName",
 413                                        g_variant_new ("(su)", impl->bus_name, 0x4), G_VARIANT_TYPE ("(u)"),
 414                                        0, -1, cancellable, error);
 415
 416   if (reply == NULL)
 417     return FALSE;
 418
 419   g_variant_get (reply, "(u)", &rval);
 420   g_variant_unref (reply);
 421
 422   /* DBUS_REQUEST_NAME_REPLY_EXISTS: 3 */
 423   impl->primary = (rval != 3);
 424
 425   return TRUE;
 426 }
 427
 428 /* Stop doing the things that the primary instance does.
 429  *
 430  * This should be called if attempting to become the primary instance
 431  * failed (in order to clean up any partial success) and should also
 432  * be called when freeing the GApplication.
 433  *
 434  * It is safe to call this multiple times.
 435  */
 436 static void
 437 g_application_impl_stop_primary (GApplicationImpl *impl)
 438 {
 439   GApplicationClass *app_class = G_APPLICATION_GET_CLASS (impl->app);
 440
 441   app_class->dbus_unregister (impl->app,
 442                               impl->session_bus,
 443                               impl->object_path);
 444
 445   if (impl->object_id)
 446     {
 447       g_dbus_connection_unregister_object (impl->session_bus, impl->object_id);
 448       impl->object_id = 0;
 449     }
 450
 451   if (impl->fdo_object_id)
 452     {
 453       g_dbus_connection_unregister_object (impl->session_bus, impl->fdo_object_id);
 454       impl->fdo_object_id = 0;
 455     }
 456
 457   if (impl->actions_id)
 458     {
 459       g_dbus_connection_unexport_action_group (impl->session_bus, impl->actions_id);
 460       impl->actions_id = 0;
 461     }
 462
 463   if (impl->primary && impl->bus_name)
 464     {
 465       g_dbus_connection_call (impl->session_bus, "org.freedesktop.DBus",
 466                               "/org/freedesktop/DBus", "org.freedesktop.DBus",
 467                               "ReleaseName", g_variant_new ("(s)", impl->bus_name),
 468                               NULL, G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL);
 469       impl->primary = FALSE;
 470     }
 471 }
 472
 473 void
 474 g_application_impl_set_busy_state (GApplicationImpl *impl,
 475                                    gboolean          busy)
 476 {
 477   if (impl->busy != busy)
 478     {
 479       impl->busy = busy;
 480       send_property_change (impl);
 481     }
 482 }
 483
 484 void
 485 g_application_impl_destroy (GApplicationImpl *impl)
 486 {
 487   g_application_impl_stop_primary (impl);
 488
 489   if (impl->session_bus)
 490     g_object_unref (impl->session_bus);
 491
 492   g_free (impl->object_path);
 493
 494   g_slice_free (GApplicationImpl, impl);
 495 }
 496
 497 GApplicationImpl *
 498 g_application_impl_register (GApplication        *application,
 499                              const gchar         *appid,
 500                              GApplicationFlags    flags,
 501                              GActionGroup        *exported_actions,
 502                              GRemoteActionGroup **remote_actions,
 503                              GCancellable        *cancellable,
 504                              GError             **error)
 505 {
 506   GDBusActionGroup *actions;
 507   GApplicationImpl *impl;
 508
 509   g_assert ((flags & G_APPLICATION_NON_UNIQUE) || appid != NULL);
 510
 511   impl = g_slice_new0 (GApplicationImpl);
 512
 513   impl->app = application;
 514   impl->exported_actions = exported_actions;
 515
 516   /* non-unique applications do not attempt to acquire a bus name */
 517   if (~flags & G_APPLICATION_NON_UNIQUE)
 518     impl->bus_name = appid;
 519
 520   impl->session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, cancellable, NULL);
 521
 522   if (impl->session_bus == NULL)
 523     {
 524       /* If we can't connect to the session bus, proceed as a normal
 525        * non-unique application.
 526        */
 527       *remote_actions = NULL;
 528       return impl;
 529     }
 530
 531   impl->object_path = application_path_from_appid (appid);
 532
 533   /* Only try to be the primary instance if
 534    * G_APPLICATION_IS_LAUNCHER was not specified.
 535    */
 536   if (~flags & G_APPLICATION_IS_LAUNCHER)
 537     {
 538       if (!g_application_impl_attempt_primary (impl, cancellable, error))
 539         {
 540           g_application_impl_destroy (impl);
 541           return NULL;
 542         }
 543
 544       if (impl->primary)
 545         return impl;
 546
 547       /* We didn't make it.  Drop our service-side stuff. */
 548       g_application_impl_stop_primary (impl);
 549
 550       if (flags & G_APPLICATION_IS_SERVICE)
 551         {
 552           g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
 553                        "Unable to acquire bus name '%s'", appid);
 554           g_application_impl_destroy (impl);
 555
 556           return NULL;
 557         }
 558     }
 559
 560   /* We are non-primary.  Try to get the primary's list of actions.
 561    * This also serves as a mechanism to ensure that the primary exists
 562    * (ie: DBus service files installed correctly, etc).
 563    */
 564   actions = g_dbus_action_group_get (impl->session_bus, impl->bus_name, impl->object_path);
 565   if (!g_dbus_action_group_sync (actions, cancellable, error))
 566     {
 567       /* The primary appears not to exist.  Fail the registration. */
 568       g_application_impl_destroy (impl);
 569       g_object_unref (actions);
 570
 571       return NULL;
 572     }
 573
 574   *remote_actions = G_REMOTE_ACTION_GROUP (actions);
 575
 576   return impl;
 577 }
 578
 579 void
 580 g_application_impl_activate (GApplicationImpl *impl,
 581                              GVariant         *platform_data)
 582 {
 583   g_dbus_connection_call (impl->session_bus,
 584                           impl->bus_name,
 585                           impl->object_path,
 586                           "org.gtk.Application",
 587                           "Activate",
 588                           g_variant_new ("(@a{sv})", platform_data),
 589                           NULL, 0, -1, NULL, NULL, NULL);
 590 }
 591
 592 void
 593 g_application_impl_open (GApplicationImpl  *impl,
 594                          GFile            **files,
 595                          gint               n_files,
 596                          const gchar       *hint,
 597                          GVariant          *platform_data)
 598 {
 599   GVariantBuilder builder;
 600   gint i;
 601
 602   g_variant_builder_init (&builder, G_VARIANT_TYPE ("(assa{sv})"));
 603   g_variant_builder_open (&builder, G_VARIANT_TYPE_STRING_ARRAY);
 604   for (i = 0; i < n_files; i++)
 605     {
 606       gchar *uri = g_file_get_uri (files[i]);
 607       g_variant_builder_add (&builder, "s", uri);
 608       g_free (uri);
 609     }
 610   g_variant_builder_close (&builder);
 611   g_variant_builder_add (&builder, "s", hint);
 612   g_variant_builder_add_value (&builder, platform_data);
 613
 614   g_dbus_connection_call (impl->session_bus,
 615                           impl->bus_name,
 616                           impl->object_path,
 617                           "org.gtk.Application",
 618                           "Open",
 619                           g_variant_builder_end (&builder),
 620                           NULL, 0, -1, NULL, NULL, NULL);
 621 }
 622
 623 static void
 624 g_application_impl_cmdline_method_call (GDBusConnection       *connection,
 625                                         const gchar           *sender,
 626                                         const gchar           *object_path,
 627                                         const gchar           *interface_name,
 628                                         const gchar           *method_name,
 629                                         GVariant              *parameters,
 630                                         GDBusMethodInvocation *invocation,
 631                                         gpointer               user_data)
 632 {
 633   const gchar *message;
 634
 635   g_variant_get_child (parameters, 0, "&s", &message);
 636
 637   if (strcmp (method_name, "Print") == 0)
 638     g_print ("%s", message);
 639   else if (strcmp (method_name, "PrintError") == 0)
 640     g_printerr ("%s", message);
 641   else
 642     g_assert_not_reached ();
 643
 644   g_dbus_method_invocation_return_value (invocation, NULL);
 645 }
 646
 647 typedef struct
 648 {
 649   GMainLoop *loop;
 650   int status;
 651 } CommandLineData;
 652
 653 static void
 654 g_application_impl_cmdline_done (GObject      *source,
 655                                  GAsyncResult *result,
 656                                  gpointer      user_data)
 657 {
 658   CommandLineData *data = user_data;
 659   GError *error = NULL;
 660   GVariant *reply;
 661
 662 #ifdef G_OS_UNIX
 663   reply = g_dbus_connection_call_with_unix_fd_list_finish (G_DBUS_CONNECTION (source), NULL, result, &error);
 664 #else
 665   reply = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source), result, &error);
 666 #endif
 667
 668
 669   if (reply != NULL)
 670     {
 671       g_variant_get (reply, "(i)", &data->status);
 672       g_variant_unref (reply);
 673     }
 674
 675   else
 676     {
 677       g_printerr ("%s\n", error->message);
 678       g_error_free (error);
 679       data->status = 1;
 680     }
 681
 682   g_main_loop_quit (data->loop);
 683 }
 684
 685 int
 686 g_application_impl_command_line (GApplicationImpl  *impl,
 687                                  gchar            **arguments,
 688                                  GVariant          *platform_data)
 689 {
 690   const static GDBusInterfaceVTable vtable = {
 691     g_application_impl_cmdline_method_call
 692   };
 693   const gchar *object_path = "/org/gtk/Application/CommandLine";
 694   GMainContext *context;
 695   CommandLineData data;
 696   guint object_id;
 697
 698   context = g_main_context_new ();
 699   data.loop = g_main_loop_new (context, FALSE);
 700   g_main_context_push_thread_default (context);
 701
 702   if (org_gtk_private_CommandLine == NULL)
 703     {
 704       GError *error = NULL;
 705       GDBusNodeInfo *info;
 706
 707       info = g_dbus_node_info_new_for_xml (org_gtk_private_CommandLine_xml, &error);
 708       if G_UNLIKELY (info == NULL)
 709         g_error ("%s", error->message);
 710       org_gtk_private_CommandLine = g_dbus_node_info_lookup_interface (info, "org.gtk.private.CommandLine");
 711       g_assert (org_gtk_private_CommandLine != NULL);
 712       g_dbus_interface_info_ref (org_gtk_private_CommandLine);
 713       g_dbus_node_info_unref (info);
 714     }
 715
 716   object_id = g_dbus_connection_register_object (impl->session_bus, object_path,
 717                                                  org_gtk_private_CommandLine,
 718                                                  &vtable, &data, NULL, NULL);
 719   /* In theory we should try other paths... */
 720   g_assert (object_id != 0);
 721
 722 #ifdef G_OS_UNIX
 723   {
 724     GError *error = NULL;
 725     GUnixFDList *fd_list;
 726
 727     /* send along the stdin in case
 728      * g_application_command_line_get_stdin_data() is called
 729      */
 730     fd_list = g_unix_fd_list_new ();
 731     g_unix_fd_list_append (fd_list, 0, &error);
 732     g_assert_no_error (error);
 733
 734     g_dbus_connection_call_with_unix_fd_list (impl->session_bus, impl->bus_name, impl->object_path,
 735                                               "org.gtk.Application", "CommandLine",
 736                                               g_variant_new ("(o^aay@a{sv})", object_path, arguments, platform_data),
 737                                               G_VARIANT_TYPE ("(i)"), 0, G_MAXINT, fd_list, NULL,
 738                                               g_application_impl_cmdline_done, &data);
 739   }
 740 #else
 741   g_dbus_connection_call (impl->session_bus, impl->bus_name, impl->object_path,
 742                           "org.gtk.Application", "CommandLine",
 743                           g_variant_new ("(o^aay@a{sv})", object_path, arguments, platform_data),
 744                           G_VARIANT_TYPE ("(i)"), 0, G_MAXINT, NULL,
 745                           g_application_impl_cmdline_done, &data);
 746 #endif
 747
 748   g_main_loop_run (data.loop);
 749
 750   g_main_context_pop_thread_default (context);
 751   g_main_context_unref (context);
 752   g_main_loop_unref (data.loop);
 753
 754   return data.status;
 755 }
 756
 757 void
 758 g_application_impl_flush (GApplicationImpl *impl)
 759 {
 760   if (impl->session_bus)
 761     g_dbus_connection_flush_sync (impl->session_bus, NULL, NULL);
 762 }
 763
 764 GDBusConnection *
 765 g_application_impl_get_dbus_connection (GApplicationImpl *impl)
 766 {
 767   return impl->session_bus;
 768 }
 769
 770 const gchar *
 771 g_application_impl_get_dbus_object_path (GApplicationImpl *impl)
 772 {
 773   return impl->object_path;
 774 }
 775
 776 /* GDBusCommandLine implementation {{{1 */
 777
 778 typedef GApplicationCommandLineClass GDBusCommandLineClass;
 779 static GType g_dbus_command_line_get_type (void);
 780 typedef struct
 781 {
 782   GApplicationCommandLine  parent_instance;
 783   GDBusMethodInvocation   *invocation;
 784
 785   GDBusConnection *connection;
 786   const gchar     *bus_name;
 787   const gchar     *object_path;
 788 } GDBusCommandLine;
 789
 790
 791 G_DEFINE_TYPE (GDBusCommandLine,
 792                g_dbus_command_line,
 793                G_TYPE_APPLICATION_COMMAND_LINE)
 794
 795 static void
 796 g_dbus_command_line_print_literal (GApplicationCommandLine *cmdline,
 797                                    const gchar             *message)
 798 {
 799   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 800
 801   g_dbus_connection_call (gdbcl->connection,
 802                           gdbcl->bus_name,
 803                           gdbcl->object_path,
 804                           "org.gtk.private.CommandLine", "Print",
 805                           g_variant_new ("(s)", message),
 806                           NULL, 0, -1, NULL, NULL, NULL);
 807 }
 808
 809 static void
 810 g_dbus_command_line_printerr_literal (GApplicationCommandLine *cmdline,
 811                                       const gchar             *message)
 812 {
 813   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 814
 815   g_dbus_connection_call (gdbcl->connection,
 816                           gdbcl->bus_name,
 817                           gdbcl->object_path,
 818                           "org.gtk.private.CommandLine", "PrintError",
 819                           g_variant_new ("(s)", message),
 820                           NULL, 0, -1, NULL, NULL, NULL);
 821 }
 822
 823 static GInputStream *
 824 g_dbus_command_line_get_stdin (GApplicationCommandLine *cmdline)
 825 {
 826 #ifdef G_OS_UNIX
 827   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 828   GInputStream *result = NULL;
 829   GDBusMessage *message;
 830   GUnixFDList *fd_list;
 831
 832   message = g_dbus_method_invocation_get_message (gdbcl->invocation);
 833   fd_list = g_dbus_message_get_unix_fd_list (message);
 834
 835   if (fd_list && g_unix_fd_list_get_length (fd_list))
 836     {
 837       gint *fds, n_fds, i;
 838
 839       fds = g_unix_fd_list_steal_fds (fd_list, &n_fds);
 840       result = g_unix_input_stream_new (fds[0], TRUE);
 841       for (i = 1; i < n_fds; i++)
 842         (void) g_close (fds[i], NULL);
 843       g_free (fds);
 844     }
 845
 846   return result;
 847 #else
 848   return NULL;
 849 #endif
 850 }
 851
 852 static void
 853 g_dbus_command_line_finalize (GObject *object)
 854 {
 855   GApplicationCommandLine *cmdline = G_APPLICATION_COMMAND_LINE (object);
 856   GDBusCommandLine *gdbcl = (GDBusCommandLine *) object;
 857   gint status;
 858
 859   status = g_application_command_line_get_exit_status (cmdline);
 860
 861   g_dbus_method_invocation_return_value (gdbcl->invocation,
 862                                          g_variant_new ("(i)", status));
 863   g_object_unref (gdbcl->invocation);
 864
 865   G_OBJECT_CLASS (g_dbus_command_line_parent_class)
 866     ->finalize (object);
 867 }
 868
 869 static void
 870 g_dbus_command_line_init (GDBusCommandLine *gdbcl)
 871 {
 872 }
 873
 874 static void
 875 g_dbus_command_line_class_init (GApplicationCommandLineClass *class)
 876 {
 877   GObjectClass *object_class = G_OBJECT_CLASS (class);
 878
 879   object_class->finalize = g_dbus_command_line_finalize;
 880   class->printerr_literal = g_dbus_command_line_printerr_literal;
 881   class->print_literal = g_dbus_command_line_print_literal;
 882   class->get_stdin = g_dbus_command_line_get_stdin;
 883 }
 884
 885 static GApplicationCommandLine *
 886 g_dbus_command_line_new (GDBusMethodInvocation *invocation)
 887 {
 888   GDBusCommandLine *gdbcl;
 889   GVariant *args;
 890
 891   args = g_dbus_method_invocation_get_parameters (invocation);
 892
 893   gdbcl = g_object_new (g_dbus_command_line_get_type (),
 894                         "arguments", g_variant_get_child_value (args, 1),
 895                         "platform-data", g_variant_get_child_value (args, 2),
 896                         NULL);
 897   gdbcl->connection = g_dbus_method_invocation_get_connection (invocation);
 898   gdbcl->bus_name = g_dbus_method_invocation_get_sender (invocation);
 899   g_variant_get_child (args, 0, "&o", &gdbcl->object_path);
 900   gdbcl->invocation = g_object_ref (invocation);
 901
 902   return G_APPLICATION_COMMAND_LINE (gdbcl);
 903 }
 904
 905 /* Epilogue {{{1 */
 906
 907 /* vim:set foldmethod=marker: */