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  * https://live.gnome.org/GApplication/DBusAPI
  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       g_dbus_method_invocation_return_value (invocation, NULL);
 287     }
 288   else
 289     g_assert_not_reached ();
 290 }
 291
 292 static gchar *
 293 application_path_from_appid (const gchar *appid)
 294 {
 295   gchar *appid_path, *iter;
 296
 297   if (appid == NULL)
 298     /* this is a private implementation detail */
 299     return g_strdup ("/org/gtk/Application/anonymous");
 300
 301   appid_path = g_strconcat ("/", appid, NULL);
 302   for (iter = appid_path; *iter; iter++)
 303     {
 304       if (*iter == '.')
 305         *iter = '/';
 306
 307       if (*iter == '-')
 308         *iter = '_';
 309     }
 310
 311   return appid_path;
 312 }
 313
 314 /* Attempt to become the primary instance.
 315  *
 316  * Returns %TRUE if everything went OK, regardless of if we became the
 317  * primary instance or not.  %FALSE is reserved for when something went
 318  * seriously wrong (and @error will be set too, in that case).
 319  *
 320  * After a %TRUE return, impl->primary will be TRUE if we were
 321  * successful.
 322  */
 323 static gboolean
 324 g_application_impl_attempt_primary (GApplicationImpl  *impl,
 325                                     GCancellable      *cancellable,
 326                                     GError           **error)
 327 {
 328   const static GDBusInterfaceVTable vtable = {
 329     g_application_impl_method_call,
 330     g_application_impl_get_property,
 331     NULL /* set_property */
 332   };
 333   GApplicationClass *app_class = G_APPLICATION_GET_CLASS (impl->app);
 334   GVariant *reply;
 335   guint32 rval;
 336
 337   if (org_gtk_Application == NULL)
 338     {
 339       GError *error = NULL;
 340       GDBusNodeInfo *info;
 341
 342       info = g_dbus_node_info_new_for_xml (org_gtk_Application_xml, &error);
 343       if G_UNLIKELY (info == NULL)
 344         g_error ("%s", error->message);
 345       org_gtk_Application = g_dbus_node_info_lookup_interface (info, "org.gtk.Application");
 346       g_assert (org_gtk_Application != NULL);
 347       g_dbus_interface_info_ref (org_gtk_Application);
 348       g_dbus_node_info_unref (info);
 349
 350       info = g_dbus_node_info_new_for_xml (org_freedesktop_Application_xml, &error);
 351       if G_UNLIKELY (info == NULL)
 352         g_error ("%s", error->message);
 353       org_freedesktop_Application = g_dbus_node_info_lookup_interface (info, "org.freedesktop.Application");
 354       g_assert (org_freedesktop_Application != NULL);
 355       g_dbus_interface_info_ref (org_freedesktop_Application);
 356       g_dbus_node_info_unref (info);
 357     }
 358
 359   /* We could possibly have been D-Bus activated as a result of incoming
 360    * requests on either the application or actiongroup interfaces.
 361    * Because of how GDBus dispatches messages, we need to ensure that
 362    * both of those things are registered before we attempt to request
 363    * our name.
 364    *
 365    * The action group need not be populated yet, as long as it happens
 366    * before we return to the mainloop.  The reason for that is because
 367    * GDBus does the check to make sure the object exists from the worker
 368    * thread but doesn't actually dispatch the action invocation until we
 369    * hit the mainloop in this thread.  There is also no danger of
 370    * receiving 'activate' or 'open' signals until after 'startup' runs,
 371    * for the same reason.
 372    */
 373   impl->object_id = g_dbus_connection_register_object (impl->session_bus, impl->object_path,
 374                                                        org_gtk_Application, &vtable, impl, NULL, error);
 375
 376   if (impl->object_id == 0)
 377     return FALSE;
 378
 379   impl->fdo_object_id = g_dbus_connection_register_object (impl->session_bus, impl->object_path,
 380                                                            org_freedesktop_Application, &vtable, impl, NULL, error);
 381
 382   if (impl->fdo_object_id == 0)
 383     return FALSE;
 384
 385   impl->actions_id = g_dbus_connection_export_action_group (impl->session_bus, impl->object_path,
 386                                                             impl->exported_actions, error);
 387
 388   if (impl->actions_id == 0)
 389     return FALSE;
 390
 391   if (!app_class->dbus_register (impl->app,
 392                                  impl->session_bus,
 393                                  impl->object_path,
 394                                  error))
 395     return FALSE;
 396
 397   if (impl->bus_name == NULL)
 398     {
 399       /* If this is a non-unique application then it is sufficient to
 400        * have our object paths registered. We can return now.
 401        *
 402        * Note: non-unique applications always act as primary-instance.
 403        */
 404       impl->primary = TRUE;
 405       return TRUE;
 406     }
 407
 408   /* If this is a unique application then we need to attempt to own
 409    * the well-known name and fall back to remote mode (!is_primary)
 410    * in the case that we can't do that.
 411    */
 412   /* DBUS_NAME_FLAG_DO_NOT_QUEUE: 0x4 */
 413   reply = g_dbus_connection_call_sync (impl->session_bus, "org.freedesktop.DBus", "/org/freedesktop/DBus",
 414                                        "org.freedesktop.DBus", "RequestName",
 415                                        g_variant_new ("(su)", impl->bus_name, 0x4), G_VARIANT_TYPE ("(u)"),
 416                                        0, -1, cancellable, error);
 417
 418   if (reply == NULL)
 419     return FALSE;
 420
 421   g_variant_get (reply, "(u)", &rval);
 422   g_variant_unref (reply);
 423
 424   /* DBUS_REQUEST_NAME_REPLY_EXISTS: 3 */
 425   impl->primary = (rval != 3);
 426
 427   return TRUE;
 428 }
 429
 430 /* Stop doing the things that the primary instance does.
 431  *
 432  * This should be called if attempting to become the primary instance
 433  * failed (in order to clean up any partial success) and should also
 434  * be called when freeing the GApplication.
 435  *
 436  * It is safe to call this multiple times.
 437  */
 438 static void
 439 g_application_impl_stop_primary (GApplicationImpl *impl)
 440 {
 441   GApplicationClass *app_class = G_APPLICATION_GET_CLASS (impl->app);
 442
 443   app_class->dbus_unregister (impl->app,
 444                               impl->session_bus,
 445                               impl->object_path);
 446
 447   if (impl->object_id)
 448     {
 449       g_dbus_connection_unregister_object (impl->session_bus, impl->object_id);
 450       impl->object_id = 0;
 451     }
 452
 453   if (impl->fdo_object_id)
 454     {
 455       g_dbus_connection_unregister_object (impl->session_bus, impl->fdo_object_id);
 456       impl->fdo_object_id = 0;
 457     }
 458
 459   if (impl->actions_id)
 460     {
 461       g_dbus_connection_unexport_action_group (impl->session_bus, impl->actions_id);
 462       impl->actions_id = 0;
 463     }
 464
 465   if (impl->primary && impl->bus_name)
 466     {
 467       g_dbus_connection_call (impl->session_bus, "org.freedesktop.DBus",
 468                               "/org/freedesktop/DBus", "org.freedesktop.DBus",
 469                               "ReleaseName", g_variant_new ("(s)", impl->bus_name),
 470                               NULL, G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL);
 471       impl->primary = FALSE;
 472     }
 473 }
 474
 475 void
 476 g_application_impl_set_busy_state (GApplicationImpl *impl,
 477                                    gboolean          busy)
 478 {
 479   if (impl->busy != busy)
 480     {
 481       impl->busy = busy;
 482       send_property_change (impl);
 483     }
 484 }
 485
 486 void
 487 g_application_impl_destroy (GApplicationImpl *impl)
 488 {
 489   g_application_impl_stop_primary (impl);
 490
 491   if (impl->session_bus)
 492     g_object_unref (impl->session_bus);
 493
 494   g_free (impl->object_path);
 495
 496   g_slice_free (GApplicationImpl, impl);
 497 }
 498
 499 GApplicationImpl *
 500 g_application_impl_register (GApplication        *application,
 501                              const gchar         *appid,
 502                              GApplicationFlags    flags,
 503                              GActionGroup        *exported_actions,
 504                              GRemoteActionGroup **remote_actions,
 505                              GCancellable        *cancellable,
 506                              GError             **error)
 507 {
 508   GDBusActionGroup *actions;
 509   GApplicationImpl *impl;
 510
 511   g_assert ((flags & G_APPLICATION_NON_UNIQUE) || appid != NULL);
 512
 513   impl = g_slice_new0 (GApplicationImpl);
 514
 515   impl->app = application;
 516   impl->exported_actions = exported_actions;
 517
 518   /* non-unique applications do not attempt to acquire a bus name */
 519   if (~flags & G_APPLICATION_NON_UNIQUE)
 520     impl->bus_name = appid;
 521
 522   impl->session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, cancellable, NULL);
 523
 524   if (impl->session_bus == NULL)
 525     {
 526       /* If we can't connect to the session bus, proceed as a normal
 527        * non-unique application.
 528        */
 529       *remote_actions = NULL;
 530       return impl;
 531     }
 532
 533   impl->object_path = application_path_from_appid (appid);
 534
 535   /* Only try to be the primary instance if
 536    * G_APPLICATION_IS_LAUNCHER was not specified.
 537    */
 538   if (~flags & G_APPLICATION_IS_LAUNCHER)
 539     {
 540       if (!g_application_impl_attempt_primary (impl, cancellable, error))
 541         {
 542           g_application_impl_destroy (impl);
 543           return NULL;
 544         }
 545
 546       if (impl->primary)
 547         return impl;
 548
 549       /* We didn't make it.  Drop our service-side stuff. */
 550       g_application_impl_stop_primary (impl);
 551
 552       if (flags & G_APPLICATION_IS_SERVICE)
 553         {
 554           g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
 555                        "Unable to acquire bus name '%s'", appid);
 556           g_application_impl_destroy (impl);
 557
 558           return NULL;
 559         }
 560     }
 561
 562   /* We are non-primary.  Try to get the primary's list of actions.
 563    * This also serves as a mechanism to ensure that the primary exists
 564    * (ie: DBus service files installed correctly, etc).
 565    */
 566   actions = g_dbus_action_group_get (impl->session_bus, impl->bus_name, impl->object_path);
 567   if (!g_dbus_action_group_sync (actions, cancellable, error))
 568     {
 569       /* The primary appears not to exist.  Fail the registration. */
 570       g_application_impl_destroy (impl);
 571       g_object_unref (actions);
 572
 573       return NULL;
 574     }
 575
 576   *remote_actions = G_REMOTE_ACTION_GROUP (actions);
 577
 578   return impl;
 579 }
 580
 581 void
 582 g_application_impl_activate (GApplicationImpl *impl,
 583                              GVariant         *platform_data)
 584 {
 585   g_dbus_connection_call (impl->session_bus,
 586                           impl->bus_name,
 587                           impl->object_path,
 588                           "org.gtk.Application",
 589                           "Activate",
 590                           g_variant_new ("(@a{sv})", platform_data),
 591                           NULL, 0, -1, NULL, NULL, NULL);
 592 }
 593
 594 void
 595 g_application_impl_open (GApplicationImpl  *impl,
 596                          GFile            **files,
 597                          gint               n_files,
 598                          const gchar       *hint,
 599                          GVariant          *platform_data)
 600 {
 601   GVariantBuilder builder;
 602   gint i;
 603
 604   g_variant_builder_init (&builder, G_VARIANT_TYPE ("(assa{sv})"));
 605   g_variant_builder_open (&builder, G_VARIANT_TYPE_STRING_ARRAY);
 606   for (i = 0; i < n_files; i++)
 607     {
 608       gchar *uri = g_file_get_uri (files[i]);
 609       g_variant_builder_add (&builder, "s", uri);
 610       g_free (uri);
 611     }
 612   g_variant_builder_close (&builder);
 613   g_variant_builder_add (&builder, "s", hint);
 614   g_variant_builder_add_value (&builder, platform_data);
 615
 616   g_dbus_connection_call (impl->session_bus,
 617                           impl->bus_name,
 618                           impl->object_path,
 619                           "org.gtk.Application",
 620                           "Open",
 621                           g_variant_builder_end (&builder),
 622                           NULL, 0, -1, NULL, NULL, NULL);
 623 }
 624
 625 static void
 626 g_application_impl_cmdline_method_call (GDBusConnection       *connection,
 627                                         const gchar           *sender,
 628                                         const gchar           *object_path,
 629                                         const gchar           *interface_name,
 630                                         const gchar           *method_name,
 631                                         GVariant              *parameters,
 632                                         GDBusMethodInvocation *invocation,
 633                                         gpointer               user_data)
 634 {
 635   const gchar *message;
 636
 637   g_variant_get_child (parameters, 0, "&s", &message);
 638
 639   if (strcmp (method_name, "Print") == 0)
 640     g_print ("%s", message);
 641   else if (strcmp (method_name, "PrintError") == 0)
 642     g_printerr ("%s", message);
 643   else
 644     g_assert_not_reached ();
 645
 646   g_dbus_method_invocation_return_value (invocation, NULL);
 647 }
 648
 649 typedef struct
 650 {
 651   GMainLoop *loop;
 652   int status;
 653 } CommandLineData;
 654
 655 static void
 656 g_application_impl_cmdline_done (GObject      *source,
 657                                  GAsyncResult *result,
 658                                  gpointer      user_data)
 659 {
 660   CommandLineData *data = user_data;
 661   GError *error = NULL;
 662   GVariant *reply;
 663
 664 #ifdef G_OS_UNIX
 665   reply = g_dbus_connection_call_with_unix_fd_list_finish (G_DBUS_CONNECTION (source), NULL, result, &error);
 666 #else
 667   reply = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source), result, &error);
 668 #endif
 669
 670
 671   if (reply != NULL)
 672     {
 673       g_variant_get (reply, "(i)", &data->status);
 674       g_variant_unref (reply);
 675     }
 676
 677   else
 678     {
 679       g_printerr ("%s\n", error->message);
 680       g_error_free (error);
 681       data->status = 1;
 682     }
 683
 684   g_main_loop_quit (data->loop);
 685 }
 686
 687 int
 688 g_application_impl_command_line (GApplicationImpl  *impl,
 689                                  gchar            **arguments,
 690                                  GVariant          *platform_data)
 691 {
 692   const static GDBusInterfaceVTable vtable = {
 693     g_application_impl_cmdline_method_call
 694   };
 695   const gchar *object_path = "/org/gtk/Application/CommandLine";
 696   GMainContext *context;
 697   CommandLineData data;
 698   guint object_id;
 699
 700   context = g_main_context_new ();
 701   data.loop = g_main_loop_new (context, FALSE);
 702   g_main_context_push_thread_default (context);
 703
 704   if (org_gtk_private_CommandLine == NULL)
 705     {
 706       GError *error = NULL;
 707       GDBusNodeInfo *info;
 708
 709       info = g_dbus_node_info_new_for_xml (org_gtk_private_CommandLine_xml, &error);
 710       if G_UNLIKELY (info == NULL)
 711         g_error ("%s", error->message);
 712       org_gtk_private_CommandLine = g_dbus_node_info_lookup_interface (info, "org.gtk.private.CommandLine");
 713       g_assert (org_gtk_private_CommandLine != NULL);
 714       g_dbus_interface_info_ref (org_gtk_private_CommandLine);
 715       g_dbus_node_info_unref (info);
 716     }
 717
 718   object_id = g_dbus_connection_register_object (impl->session_bus, object_path,
 719                                                  org_gtk_private_CommandLine,
 720                                                  &vtable, &data, NULL, NULL);
 721   /* In theory we should try other paths... */
 722   g_assert (object_id != 0);
 723
 724 #ifdef G_OS_UNIX
 725   {
 726     GError *error = NULL;
 727     GUnixFDList *fd_list;
 728
 729     /* send along the stdin in case
 730      * g_application_command_line_get_stdin_data() is called
 731      */
 732     fd_list = g_unix_fd_list_new ();
 733     g_unix_fd_list_append (fd_list, 0, &error);
 734     g_assert_no_error (error);
 735
 736     g_dbus_connection_call_with_unix_fd_list (impl->session_bus, impl->bus_name, impl->object_path,
 737                                               "org.gtk.Application", "CommandLine",
 738                                               g_variant_new ("(o^aay@a{sv})", object_path, arguments, platform_data),
 739                                               G_VARIANT_TYPE ("(i)"), 0, G_MAXINT, fd_list, NULL,
 740                                               g_application_impl_cmdline_done, &data);
 741   }
 742 #else
 743   g_dbus_connection_call (impl->session_bus, impl->bus_name, impl->object_path,
 744                           "org.gtk.Application", "CommandLine",
 745                           g_variant_new ("(o^aay@a{sv})", object_path, arguments, platform_data),
 746                           G_VARIANT_TYPE ("(i)"), 0, G_MAXINT, NULL,
 747                           g_application_impl_cmdline_done, &data);
 748 #endif
 749
 750   g_main_loop_run (data.loop);
 751
 752   g_main_context_pop_thread_default (context);
 753   g_main_context_unref (context);
 754   g_main_loop_unref (data.loop);
 755
 756   return data.status;
 757 }
 758
 759 void
 760 g_application_impl_flush (GApplicationImpl *impl)
 761 {
 762   if (impl->session_bus)
 763     g_dbus_connection_flush_sync (impl->session_bus, NULL, NULL);
 764 }
 765
 766 GDBusConnection *
 767 g_application_impl_get_dbus_connection (GApplicationImpl *impl)
 768 {
 769   return impl->session_bus;
 770 }
 771
 772 const gchar *
 773 g_application_impl_get_dbus_object_path (GApplicationImpl *impl)
 774 {
 775   return impl->object_path;
 776 }
 777
 778 /* GDBusCommandLine implementation {{{1 */
 779
 780 typedef GApplicationCommandLineClass GDBusCommandLineClass;
 781 static GType g_dbus_command_line_get_type (void);
 782 typedef struct
 783 {
 784   GApplicationCommandLine  parent_instance;
 785   GDBusMethodInvocation   *invocation;
 786
 787   GDBusConnection *connection;
 788   const gchar     *bus_name;
 789   const gchar     *object_path;
 790 } GDBusCommandLine;
 791
 792
 793 G_DEFINE_TYPE (GDBusCommandLine,
 794                g_dbus_command_line,
 795                G_TYPE_APPLICATION_COMMAND_LINE)
 796
 797 static void
 798 g_dbus_command_line_print_literal (GApplicationCommandLine *cmdline,
 799                                    const gchar             *message)
 800 {
 801   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 802
 803   g_dbus_connection_call (gdbcl->connection,
 804                           gdbcl->bus_name,
 805                           gdbcl->object_path,
 806                           "org.gtk.private.CommandLine", "Print",
 807                           g_variant_new ("(s)", message),
 808                           NULL, 0, -1, NULL, NULL, NULL);
 809 }
 810
 811 static void
 812 g_dbus_command_line_printerr_literal (GApplicationCommandLine *cmdline,
 813                                       const gchar             *message)
 814 {
 815   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 816
 817   g_dbus_connection_call (gdbcl->connection,
 818                           gdbcl->bus_name,
 819                           gdbcl->object_path,
 820                           "org.gtk.private.CommandLine", "PrintError",
 821                           g_variant_new ("(s)", message),
 822                           NULL, 0, -1, NULL, NULL, NULL);
 823 }
 824
 825 static GInputStream *
 826 g_dbus_command_line_get_stdin (GApplicationCommandLine *cmdline)
 827 {
 828 #ifdef G_OS_UNIX
 829   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 830   GInputStream *result = NULL;
 831   GDBusMessage *message;
 832   GUnixFDList *fd_list;
 833
 834   message = g_dbus_method_invocation_get_message (gdbcl->invocation);
 835   fd_list = g_dbus_message_get_unix_fd_list (message);
 836
 837   if (fd_list && g_unix_fd_list_get_length (fd_list))
 838     {
 839       gint *fds, n_fds, i;
 840
 841       fds = g_unix_fd_list_steal_fds (fd_list, &n_fds);
 842       result = g_unix_input_stream_new (fds[0], TRUE);
 843       for (i = 1; i < n_fds; i++)
 844         (void) g_close (fds[i], NULL);
 845       g_free (fds);
 846     }
 847
 848   return result;
 849 #else
 850   return NULL;
 851 #endif
 852 }
 853
 854 static void
 855 g_dbus_command_line_finalize (GObject *object)
 856 {
 857   GApplicationCommandLine *cmdline = G_APPLICATION_COMMAND_LINE (object);
 858   GDBusCommandLine *gdbcl = (GDBusCommandLine *) object;
 859   gint status;
 860
 861   status = g_application_command_line_get_exit_status (cmdline);
 862
 863   g_dbus_method_invocation_return_value (gdbcl->invocation,
 864                                          g_variant_new ("(i)", status));
 865   g_object_unref (gdbcl->invocation);
 866
 867   G_OBJECT_CLASS (g_dbus_command_line_parent_class)
 868     ->finalize (object);
 869 }
 870
 871 static void
 872 g_dbus_command_line_init (GDBusCommandLine *gdbcl)
 873 {
 874 }
 875
 876 static void
 877 g_dbus_command_line_class_init (GApplicationCommandLineClass *class)
 878 {
 879   GObjectClass *object_class = G_OBJECT_CLASS (class);
 880
 881   object_class->finalize = g_dbus_command_line_finalize;
 882   class->printerr_literal = g_dbus_command_line_printerr_literal;
 883   class->print_literal = g_dbus_command_line_print_literal;
 884   class->get_stdin = g_dbus_command_line_get_stdin;
 885 }
 886
 887 static GApplicationCommandLine *
 888 g_dbus_command_line_new (GDBusMethodInvocation *invocation)
 889 {
 890   GDBusCommandLine *gdbcl;
 891   GVariant *args;
 892
 893   args = g_dbus_method_invocation_get_parameters (invocation);
 894
 895   gdbcl = g_object_new (g_dbus_command_line_get_type (),
 896                         "arguments", g_variant_get_child_value (args, 1),
 897                         "platform-data", g_variant_get_child_value (args, 2),
 898                         NULL);
 899   gdbcl->connection = g_dbus_method_invocation_get_connection (invocation);
 900   gdbcl->bus_name = g_dbus_method_invocation_get_sender (invocation);
 901   g_variant_get_child (args, 0, "&o", &gdbcl->object_path);
 902   gdbcl->invocation = g_object_ref (invocation);
 903
 904   return G_APPLICATION_COMMAND_LINE (gdbcl);
 905 }
 906
 907 /* Epilogue {{{1 */
 908
 909 /* vim:set foldmethod=marker: */