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 "gapplicationimpl.h"
  23
  24 #include "gactiongroup.h"
  25 #include "gapplication.h"
  26 #include "gfile.h"
  27 #include "gdbusconnection.h"
  28 #include "gdbusintrospection.h"
  29 #include "gdbuserror.h"
  30
  31 #include <string.h>
  32 #include <stdio.h>
  33
  34 #include "gapplicationcommandline.h"
  35 #include "gdbusmethodinvocation.h"
  36
  37 /* DBus Interface definition {{{1 */
  38 static const GDBusArgInfo platform_data_arg = { -1, (gchar *) "platform_data", (gchar *) "a{sv}" };
  39
  40 static const GDBusArgInfo open_uris_arg = { -1, (gchar *) "uris", (gchar *) "as" };
  41 static const GDBusArgInfo open_hint_arg = { -1, (gchar *) "hint", (gchar *) "s" };
  42
  43 static const GDBusArgInfo invoke_action_name_arg = { -1, (gchar *) "name", (gchar *) "s" };
  44 static const GDBusArgInfo invoke_action_args_arg = { -1, (gchar *) "args", (gchar *) "v" };
  45
  46 static const GDBusArgInfo cmdline_path_arg = { -1, (gchar *) "path", (gchar *) "o" };
  47 static const GDBusArgInfo cmdline_arguments_arg = { -1, (gchar *) "arguments", (gchar *) "aay" };
  48 static const GDBusArgInfo cmdline_exit_status_arg = { -1, (gchar *) "exit_status", (gchar *) "i" };
  49
  50 static const GDBusArgInfo *activate_in[] = { &platform_data_arg, NULL };
  51 static const GDBusArgInfo *activate_out[] = { NULL };
  52
  53 static const GDBusArgInfo *open_in[] = { &open_uris_arg, &open_hint_arg, &platform_data_arg, NULL };
  54 static const GDBusArgInfo *open_out[] = { NULL };
  55
  56 static const GDBusArgInfo *cmdline_in[] = { &cmdline_path_arg, &cmdline_arguments_arg, &platform_data_arg, NULL };
  57 static const GDBusArgInfo *cmdline_out[] = { &cmdline_exit_status_arg, NULL };
  58
  59 static const GDBusMethodInfo activate_method = {
  60   -1, (gchar *) "Activate",
  61   (GDBusArgInfo **) activate_in,
  62   (GDBusArgInfo **) activate_out
  63 };
  64
  65 static const GDBusMethodInfo open_method = {
  66   -1, (gchar *) "Open",
  67   (GDBusArgInfo **) open_in,
  68   (GDBusArgInfo **) open_out
  69 };
  70
  71 static const GDBusMethodInfo command_line_method = {
  72   -1, (gchar *) "CommandLine",
  73   (GDBusArgInfo **) cmdline_in,
  74   (GDBusArgInfo **) cmdline_out
  75 };
  76
  77 static const GDBusMethodInfo *application_methods[] = {
  78   &activate_method, &open_method, &command_line_method, NULL
  79 };
  80
  81 const GDBusInterfaceInfo org_gtk_Application = {
  82   -1, (gchar *) "org.gtk.Application",
  83   (GDBusMethodInfo **) application_methods
  84 };
  85
  86 static const GDBusArgInfo list_arg = { -1, (gchar *) "list", (gchar *) "a(savbav)" };
  87 static const GDBusArgInfo *describe_all_out[] = { &list_arg, NULL };
  88
  89 static const GDBusArgInfo action_name_arg = { -1, (gchar *) "action_name", (gchar *) "s" };
  90 static const GDBusArgInfo value_arg = { -1, (gchar *) "value", (gchar *) "v" };
  91 static const GDBusArgInfo *set_action_state_in[] = { &action_name_arg, &value_arg, &platform_data_arg, NULL };
  92
  93 static const GDBusArgInfo parameter_arg = { -1, (gchar *) "parameter", (gchar *) "av" };
  94 static const GDBusArgInfo *activate_action_in[] = { &action_name_arg, &parameter_arg, &platform_data_arg, NULL };
  95
  96 static const GDBusMethodInfo describe_all_method = {
  97   -1, (gchar *) "DescribeAll", NULL,
  98   (GDBusArgInfo **) describe_all_out
  99 };
 100
 101 static const GDBusMethodInfo set_action_state_method = {
 102   -1, (gchar *) "SetState",
 103   (GDBusArgInfo **) set_action_state_in
 104 };
 105
 106 static const GDBusMethodInfo activate_action_method = {
 107   -1, (gchar *) "Activate",
 108   (GDBusArgInfo **) activate_action_in
 109 };
 110
 111 static const GDBusMethodInfo *actions_methods[] = {
 112   &describe_all_method, &set_action_state_method, &activate_action_method, NULL
 113 };
 114
 115 const GDBusInterfaceInfo org_gtk_Actions = {
 116   -1, (gchar *) "org.gtk.Actions",
 117   (GDBusMethodInfo **) actions_methods
 118 };
 119
 120 static const GDBusArgInfo message_arg = { -1, (gchar *) "message", (gchar *) "s" };
 121 static const GDBusArgInfo *print_in[] = { &message_arg, NULL };
 122 static const GDBusArgInfo *print_out[] = { NULL };
 123
 124 static const GDBusMethodInfo stdout_method = {
 125   -1, (gchar *) "Print",
 126   (GDBusArgInfo **) print_in,
 127   (GDBusArgInfo **) print_out
 128 };
 129
 130 static const GDBusMethodInfo stderr_method = {
 131   -1, (gchar *) "PrintError",
 132   (GDBusArgInfo **) print_in,
 133   (GDBusArgInfo **) print_out
 134 };
 135
 136 static const GDBusMethodInfo *cmdline_methods[] = {
 137   &stdout_method, &stderr_method, NULL
 138 };
 139
 140 const GDBusInterfaceInfo org_gtk_private_Cmdline = {
 141   -1, (gchar *) "org.gtk.private.CommandLine",
 142   (GDBusMethodInfo **) cmdline_methods
 143 };
 144
 145 /* GApplication implementation {{{1 */
 146 struct _GApplicationImpl
 147 {
 148   GDBusConnection *session_bus;
 149   const gchar     *bus_name;
 150   gchar           *object_path;
 151   guint            object_id;
 152   guint            action_id;
 153   gpointer         app;
 154
 155   GHashTable      *actions;
 156   guint            signal_id;
 157 };
 158
 159
 160 static GApplicationCommandLine *
 161 g_dbus_command_line_new (GDBusMethodInvocation *invocation);
 162
 163
 164 static void
 165 g_application_impl_method_call (GDBusConnection       *connection,
 166                                 const gchar           *sender,
 167                                 const gchar           *object_path,
 168                                 const gchar           *interface_name,
 169                                 const gchar           *method_name,
 170                                 GVariant              *parameters,
 171                                 GDBusMethodInvocation *invocation,
 172                                 gpointer               user_data)
 173 {
 174   GApplicationImpl *impl = user_data;
 175   GApplicationClass *class;
 176
 177   class = G_APPLICATION_GET_CLASS (impl->app);
 178
 179   if (strcmp (method_name, "Activate") == 0)
 180     {
 181       GVariant *platform_data;
 182
 183       g_variant_get (parameters, "(@a{sv})", &platform_data);
 184       class->before_emit (impl->app, platform_data);
 185       g_signal_emit_by_name (impl->app, "activate");
 186       class->after_emit (impl->app, platform_data);
 187       g_variant_unref (platform_data);
 188
 189       g_dbus_method_invocation_return_value (invocation, NULL);
 190     }
 191
 192   else if (strcmp (method_name, "Open") == 0)
 193     {
 194       GVariant *platform_data;
 195       const gchar *hint;
 196       GVariant *array;
 197       GFile **files;
 198       gint n, i;
 199
 200       g_variant_get (parameters, "(@ass@a{sv})",
 201                      &array, &hint, &platform_data);
 202
 203       n = g_variant_n_children (array);
 204       files = g_new (GFile *, n + 1);
 205
 206       for (i = 0; i < n; i++)
 207         {
 208           const gchar *uri;
 209
 210           g_variant_get_child (array, i, "&s", &uri);
 211           files[i] = g_file_new_for_uri (uri);
 212         }
 213       g_variant_unref (array);
 214       files[n] = NULL;
 215
 216       class->before_emit (impl->app, platform_data);
 217       g_signal_emit_by_name (impl->app, "open", files, n, hint);
 218       class->after_emit (impl->app, platform_data);
 219
 220       g_variant_unref (platform_data);
 221
 222       for (i = 0; i < n; i++)
 223         g_object_unref (files[i]);
 224       g_free (files);
 225
 226       g_dbus_method_invocation_return_value (invocation, NULL);
 227     }
 228
 229   else if (strcmp (method_name, "CommandLine") == 0)
 230     {
 231       GApplicationCommandLine *cmdline;
 232       GVariant *platform_data;
 233       int status;
 234
 235       cmdline = g_dbus_command_line_new (invocation);
 236       platform_data = g_variant_get_child_value (parameters, 2);
 237       class->before_emit (impl->app, platform_data);
 238       g_signal_emit_by_name (impl->app, "command-line", cmdline, &status);
 239       g_application_command_line_set_exit_status (cmdline, status);
 240       class->after_emit (impl->app, platform_data);
 241       g_variant_unref (platform_data);
 242       g_object_unref (cmdline);
 243     }
 244   else
 245     g_assert_not_reached ();
 246 }
 247
 248 static void
 249 g_application_impl_actions_method_call (GDBusConnection       *connection,
 250                                         const gchar           *sender,
 251                                         const gchar           *object_path,
 252                                         const gchar           *interface_name,
 253                                         const gchar           *method_name,
 254                                         GVariant              *parameters,
 255                                         GDBusMethodInvocation *invocation,
 256                                         gpointer               user_data)
 257 {
 258   GApplicationImpl *impl = user_data;
 259   GActionGroup *action_group;
 260   GApplicationClass *class;
 261
 262   class = G_APPLICATION_GET_CLASS (impl->app);
 263   action_group = G_ACTION_GROUP (impl->app);
 264
 265   if (strcmp (method_name, "DescribeAll") == 0)
 266     {
 267       GVariantBuilder builder;
 268       gchar **actions;
 269       gint i;
 270
 271       actions = g_action_group_list_actions (action_group);
 272       g_variant_builder_init (&builder, G_VARIANT_TYPE ("(a(savbav))"));
 273       g_variant_builder_open (&builder, G_VARIANT_TYPE ("a(savbav)"));
 274
 275       for (i = 0; actions[i]; i++)
 276         {
 277           /* Open */
 278           g_variant_builder_open (&builder, G_VARIANT_TYPE ("(savbav)"));
 279
 280           /* Name */
 281           g_variant_builder_add (&builder, "s", actions[i]);
 282
 283           /* Parameter type */
 284           g_variant_builder_open (&builder, G_VARIANT_TYPE ("av"));
 285             {
 286               const GVariantType *type;
 287
 288               type = g_action_group_get_action_parameter_type (action_group,
 289                                                                actions[i]);
 290               if (type != NULL)
 291                 {
 292                   GVariantType *array_type;
 293
 294                   array_type = g_variant_type_new_array (type);
 295                   g_variant_builder_open (&builder, G_VARIANT_TYPE_VARIANT);
 296                   g_variant_builder_open (&builder, array_type);
 297                   g_variant_builder_close (&builder);
 298                   g_variant_builder_close (&builder);
 299                   g_variant_type_free (array_type);
 300                 }
 301             }
 302           g_variant_builder_close (&builder);
 303
 304           /* Enabled */
 305           {
 306             gboolean enabled = g_action_group_get_action_enabled (action_group,
 307                                                                   actions[i]);
 308             g_variant_builder_add (&builder, "b", enabled);
 309           }
 310
 311           /* State */
 312           g_variant_builder_open (&builder, G_VARIANT_TYPE ("av"));
 313           {
 314             GVariant *state = g_action_group_get_action_state (action_group,
 315                                                                actions[i]);
 316             if (state != NULL)
 317               {
 318                 g_variant_builder_add (&builder, "v", state);
 319                 g_variant_unref (state);
 320               }
 321           }
 322           g_variant_builder_close (&builder);
 323
 324           /* Close */
 325           g_variant_builder_close (&builder);
 326         }
 327       g_variant_builder_close (&builder);
 328
 329       g_dbus_method_invocation_return_value (invocation,
 330                                              g_variant_builder_end (&builder));
 331
 332       g_strfreev (actions);
 333     }
 334
 335   else if (strcmp (method_name, "SetState") == 0)
 336     {
 337       const gchar *action_name;
 338       GVariant *platform_data;
 339       GVariant *state;
 340
 341       g_variant_get (parameters, "(&sv@a{sv})",
 342                      &action_name, &state, &platform_data);
 343
 344       class->before_emit (impl->app, platform_data);
 345       g_action_group_change_action_state (action_group, action_name, state);
 346       class->after_emit (impl->app, platform_data);
 347       g_variant_unref (platform_data);
 348       g_variant_unref (state);
 349
 350       g_dbus_method_invocation_return_value (invocation, NULL);
 351     }
 352
 353   else if (strcmp (method_name, "Activate") == 0)
 354     {
 355       const gchar *action_name;
 356       GVariant *platform_data;
 357       GVariantIter *param;
 358       GVariant *parameter;
 359       GVariant *unboxed_parameter;
 360
 361       g_variant_get (parameters, "(&sav@a{sv})",
 362                      &action_name, &param, &platform_data);
 363       parameter = g_variant_iter_next_value (param);
 364       unboxed_parameter = parameter ? g_variant_get_variant (parameter) : NULL;
 365       g_variant_iter_free (param);
 366
 367       class->before_emit (impl->app, platform_data);
 368       g_action_group_activate_action (action_group, action_name, unboxed_parameter);
 369       class->after_emit (impl->app, platform_data);
 370       g_variant_unref (platform_data);
 371
 372       if (unboxed_parameter)
 373         g_variant_unref (unboxed_parameter);
 374       if (parameter)
 375         g_variant_unref (parameter);
 376
 377       g_dbus_method_invocation_return_value (invocation, NULL);
 378     }
 379
 380   else
 381     g_assert_not_reached ();
 382 }
 383
 384 static gchar *
 385 application_path_from_appid (const gchar *appid)
 386 {
 387   gchar *appid_path, *iter;
 388
 389   appid_path = g_strconcat ("/", appid, NULL);
 390   for (iter = appid_path; *iter; iter++)
 391     {
 392       if (*iter == '.')
 393         *iter = '/';
 394     }
 395
 396   return appid_path;
 397 }
 398
 399 void
 400 g_application_impl_destroy (GApplicationImpl *impl)
 401 {
 402   if (impl->session_bus)
 403     {
 404       if (impl->object_id)
 405         g_dbus_connection_unregister_object (impl->session_bus,
 406                                              impl->object_id);
 407
 408       g_object_unref (impl->session_bus);
 409       g_free (impl->object_path);
 410     }
 411   else
 412     {
 413       g_assert (impl->object_path == NULL);
 414       g_assert (impl->object_id == 0);
 415     }
 416
 417   g_slice_free (GApplicationImpl, impl);
 418 }
 419
 420 RemoteActionInfo *
 421 remote_action_info_new_from_iter (GVariantIter *iter)
 422 {
 423   RemoteActionInfo *info;
 424   const gchar *name;
 425   GVariant *param_type;
 426   gboolean enabled;
 427   GVariant *state;
 428
 429   if (!g_variant_iter_next (iter, "(s@avb@av)", &name,
 430                             &param_type, &enabled, &state))
 431     return NULL;
 432
 433   info = g_slice_new (RemoteActionInfo);
 434   info->parameter_type = g_variant_type_copy (
 435                            g_variant_type_element (
 436                              g_variant_get_type (param_type)));
 437   info->enabled = enabled;
 438   info->state = state;
 439
 440   g_variant_unref (param_type);
 441
 442   return info;
 443 }
 444
 445 static void
 446 g_application_impl_action_signal (GDBusConnection *connection,
 447                                   const gchar     *sender_name,
 448                                   const gchar     *object_path,
 449                                   const gchar     *interface_name,
 450                                   const gchar     *signal_name,
 451                                   GVariant        *parameters,
 452                                   gpointer         user_data)
 453 {
 454   GApplicationImpl *impl = user_data;
 455   GActionGroup *action_group;
 456
 457   action_group = G_ACTION_GROUP (impl->app);
 458
 459   if (strcmp (signal_name, "Added") == 0 &&
 460       g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(a(savbav))")))
 461     {
 462       RemoteActionInfo *info;
 463       GVariantIter *iter;
 464
 465       g_variant_get_child (parameters, 0, "a(savbav)", &iter);
 466
 467       while ((info = remote_action_info_new_from_iter (iter)))
 468         {
 469           g_hash_table_replace (impl->actions, info->name, info);
 470           g_action_group_action_added (action_group, info->name);
 471         }
 472
 473       g_variant_iter_free (iter);
 474     }
 475
 476   else if (strcmp (signal_name, "Removed") == 0 &&
 477            g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(as)")))
 478     {
 479       GVariantIter *iter;
 480       const gchar *name;
 481
 482       g_variant_get_child (parameters, 0, "as", &iter);
 483       while (g_variant_iter_next (iter, "&s", &name))
 484         if (g_hash_table_remove (impl->actions, name))
 485           g_action_group_action_removed (action_group, name);
 486       g_variant_iter_free (iter);
 487     }
 488
 489   else if (strcmp (signal_name, "EnabledChanged") == 0 &&
 490            g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(sb)")))
 491     {
 492       RemoteActionInfo *info;
 493       const gchar *name;
 494       gboolean enabled;
 495
 496       g_variant_get (parameters, "(&sb)", &name, &enabled);
 497       info = g_hash_table_lookup (impl->actions, name);
 498
 499       if (info && enabled != info->enabled)
 500         {
 501           info->enabled = enabled;
 502           g_action_group_action_enabled_changed (action_group,
 503                                                  info->name,
 504                                                  enabled);
 505         }
 506     }
 507
 508   else if (strcmp (signal_name, "StateChanged") == 0 &&
 509            g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(sv)")))
 510     {
 511       RemoteActionInfo *info;
 512       const gchar *name;
 513       GVariant *state;
 514
 515       g_variant_get (parameters, "(&sv)", &name, &state);
 516       info = g_hash_table_lookup (impl->actions, name);
 517
 518       if (info && info->state &&
 519           g_variant_is_of_type (state, g_variant_get_type (info->state)) &&
 520           !g_variant_equal (state, info->state))
 521         {
 522           g_variant_unref (info->state);
 523           info->state = g_variant_ref (state);
 524           g_action_group_action_state_changed (action_group,
 525                                                info->name,
 526                                                state);
 527         }
 528       g_variant_unref (state);
 529     }
 530 }
 531
 532 GApplicationImpl *
 533 g_application_impl_register (GApplication       *application,
 534                              const gchar        *appid,
 535                              GApplicationFlags   flags,
 536                              GHashTable        **remote_actions,
 537                              GCancellable       *cancellable,
 538                              GError            **error)
 539 {
 540   const static GDBusInterfaceVTable vtable = {
 541     g_application_impl_method_call
 542   };
 543   const static GDBusInterfaceVTable actions_vtable = {
 544     g_application_impl_actions_method_call
 545   };
 546   GApplicationImpl *impl;
 547   GVariant *reply;
 548   guint32 rval;
 549
 550   impl = g_slice_new (GApplicationImpl);
 551
 552   impl->app = application;
 553   impl->bus_name = appid;
 554
 555   impl->session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION,
 556                                       cancellable, error);
 557
 558   if (impl->session_bus == NULL)
 559     {
 560       g_slice_free (GApplicationImpl, impl);
 561       return NULL;
 562     }
 563
 564   impl->object_path = application_path_from_appid (appid);
 565
 566   /* Only try to be the primary instance if
 567    * G_APPLICATION_IS_LAUNCHER was not specified.
 568    */
 569   if (~flags & G_APPLICATION_IS_LAUNCHER)
 570     {
 571       /* Attempt to become primary instance. */
 572       impl->object_id =
 573         g_dbus_connection_register_object (impl->session_bus,
 574                                            impl->object_path,
 575                                            (GDBusInterfaceInfo *)
 576                                              &org_gtk_Application,
 577                                            &vtable, impl, NULL, error);
 578
 579       if (impl->object_id == 0)
 580         {
 581           g_object_unref (impl->session_bus);
 582           g_free (impl->object_path);
 583           impl->session_bus = NULL;
 584           impl->object_path = NULL;
 585
 586           g_slice_free (GApplicationImpl, impl);
 587           return NULL;
 588         }
 589
 590       impl->action_id =
 591         g_dbus_connection_register_object (impl->session_bus,
 592                                            impl->object_path,
 593                                            (GDBusInterfaceInfo *)
 594                                              &org_gtk_Actions,
 595                                            &actions_vtable,
 596                                            impl, NULL, error);
 597
 598       if (impl->action_id == 0)
 599         {
 600           g_dbus_connection_unregister_object (impl->session_bus,
 601                                                impl->object_id);
 602
 603           g_object_unref (impl->session_bus);
 604           g_free (impl->object_path);
 605           impl->session_bus = NULL;
 606           impl->object_path = NULL;
 607
 608           g_slice_free (GApplicationImpl, impl);
 609           return NULL;
 610         }
 611
 612       /* DBUS_NAME_FLAG_DO_NOT_QUEUE: 0x4 */
 613       reply = g_dbus_connection_call_sync (impl->session_bus,
 614                                            "org.freedesktop.DBus",
 615                                            "/org/freedesktop/DBus",
 616                                            "org.freedesktop.DBus",
 617                                            "RequestName",
 618                                            g_variant_new ("(su)",
 619                                                           impl->bus_name,
 620                                                           0x4),
 621                                            G_VARIANT_TYPE ("(u)"),
 622                                            0, -1, cancellable, error);
 623
 624       if (reply == NULL)
 625         {
 626           g_dbus_connection_unregister_object (impl->session_bus,
 627                                                impl->object_id);
 628           impl->object_id = 0;
 629
 630           g_object_unref (impl->session_bus);
 631           g_free (impl->object_path);
 632           impl->session_bus = NULL;
 633           impl->object_path = NULL;
 634
 635           g_slice_free (GApplicationImpl, impl);
 636           return NULL;
 637         }
 638
 639       g_variant_get (reply, "(u)", &rval);
 640       g_variant_unref (reply);
 641
 642       /* DBUS_REQUEST_NAME_REPLY_EXISTS: 3 */
 643       if (rval != 3)
 644         {
 645           /* We are the primary instance. */
 646           g_dbus_connection_emit_signal (impl->session_bus,
 647                                          NULL,
 648                                          impl->object_path,
 649                                          "org.gtk.Application",
 650                                          "Hello",
 651                                          g_variant_new ("(s)",
 652                                                         impl->bus_name),
 653                                          NULL);
 654           *remote_actions = NULL;
 655           return impl;
 656         }
 657
 658       /* We didn't make it.  Drop our service-side stuff. */
 659       g_dbus_connection_unregister_object (impl->session_bus,
 660                                            impl->object_id);
 661       impl->object_id = 0;
 662
 663       if (flags & G_APPLICATION_IS_SERVICE)
 664         {
 665           g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
 666                        "Unable to acquire bus name `%s'", appid);
 667           g_object_unref (impl->session_bus);
 668           g_free (impl->object_path);
 669
 670           g_slice_free (GApplicationImpl, impl);
 671           return NULL;
 672         }
 673     }
 674
 675   /* We are non-primary.  Try to get the primary's list of actions.
 676    * This also serves as a mechanism to ensure that the primary exists
 677    * (ie: DBus service files installed correctly, etc).
 678    */
 679   impl->signal_id =
 680     g_dbus_connection_signal_subscribe (impl->session_bus, impl->bus_name,
 681                                         "org.gtk.Actions", NULL,
 682                                         impl->object_path, NULL,
 683                                         G_DBUS_SIGNAL_FLAGS_NONE,
 684                                         g_application_impl_action_signal,
 685                                         impl, NULL);
 686
 687   reply = g_dbus_connection_call_sync (impl->session_bus, impl->bus_name,
 688                                        impl->object_path, "org.gtk.Actions",
 689                                        "DescribeAll", NULL,
 690                                        G_VARIANT_TYPE ("(a(savbav))"),
 691                                        G_DBUS_CALL_FLAGS_NONE, -1,
 692                                        cancellable, error);
 693
 694   if (reply == NULL)
 695     {
 696       /* The primary appears not to exist.  Fail the registration. */
 697       g_object_unref (impl->session_bus);
 698       g_free (impl->object_path);
 699       impl->session_bus = NULL;
 700       impl->object_path = NULL;
 701
 702       g_slice_free (GApplicationImpl, impl);
 703       return NULL;
 704     }
 705
 706   /* Create and populate the hashtable */
 707   {
 708     GVariant *descriptions;
 709     GVariantIter iter;
 710     GVariant *param_type;
 711     gboolean enabled;
 712     GVariant *state;
 713     gchar *name;
 714
 715     *remote_actions = g_hash_table_new (g_str_hash, g_str_equal);
 716     descriptions = g_variant_get_child_value (reply, 0);
 717     g_variant_iter_init (&iter, descriptions);
 718
 719     while (g_variant_iter_next (&iter, "(s@avb@av)", &name,
 720                                 &param_type, &enabled, &state))
 721       {
 722         RemoteActionInfo *action;
 723
 724         action = g_slice_new (RemoteActionInfo);
 725         action->parameter_type = g_variant_type_copy (
 726                                    g_variant_type_element (
 727                                      g_variant_get_type (param_type)));
 728         action->enabled = enabled;
 729         action->state = state;
 730
 731         g_hash_table_insert (*remote_actions, name, action);
 732         g_variant_unref (param_type);
 733       }
 734
 735     g_variant_unref (descriptions);
 736   }
 737
 738
 739   return impl;
 740 }
 741
 742 void
 743 g_application_impl_activate (GApplicationImpl *impl,
 744                              GVariant         *platform_data)
 745 {
 746   g_dbus_connection_call (impl->session_bus,
 747                           impl->bus_name,
 748                           impl->object_path,
 749                           "org.gtk.Application",
 750                           "Activate",
 751                           g_variant_new ("(@a{sv})", platform_data),
 752                           NULL, 0, -1, NULL, NULL, NULL);
 753 }
 754
 755 void
 756 g_application_impl_open (GApplicationImpl  *impl,
 757                          GFile            **files,
 758                          gint               n_files,
 759                          const gchar       *hint,
 760                          GVariant          *platform_data)
 761 {
 762   GVariantBuilder builder;
 763   gint i;
 764
 765   g_variant_builder_init (&builder, G_VARIANT_TYPE ("(assa{sv})"));
 766   g_variant_builder_open (&builder, G_VARIANT_TYPE_STRING_ARRAY);
 767   for (i = 0; i < n_files; i++)
 768     {
 769       gchar *uri = g_file_get_uri (files[i]);
 770       g_variant_builder_add (&builder, "s", uri);
 771       g_free (uri);
 772     }
 773   g_variant_builder_close (&builder);
 774   g_variant_builder_add (&builder, "s", hint);
 775   g_variant_builder_add_value (&builder, platform_data);
 776
 777   g_dbus_connection_call (impl->session_bus,
 778                           impl->bus_name,
 779                           impl->object_path,
 780                           "org.gtk.Application",
 781                           "Open",
 782                           g_variant_builder_end (&builder),
 783                           NULL, 0, -1, NULL, NULL, NULL);
 784 }
 785
 786 static void
 787 g_application_impl_cmdline_method_call (GDBusConnection       *connection,
 788                                         const gchar           *sender,
 789                                         const gchar           *object_path,
 790                                         const gchar           *interface_name,
 791                                         const gchar           *method_name,
 792                                         GVariant              *parameters,
 793                                         GDBusMethodInvocation *invocation,
 794                                         gpointer               user_data)
 795 {
 796   const gchar *message;
 797
 798   g_variant_get_child (parameters, 0, "&s", &message);
 799
 800   if (strcmp (method_name, "Print") == 0)
 801     g_print ("%s", message);
 802   else if (strcmp (method_name, "PrintError") == 0)
 803     g_printerr ("%s", message);
 804   else
 805     g_assert_not_reached ();
 806
 807   g_dbus_method_invocation_return_value (invocation, NULL);
 808 }
 809
 810 typedef struct
 811 {
 812   GMainLoop *loop;
 813   int status;
 814 } CommandLineData;
 815
 816 static void
 817 g_application_impl_cmdline_done (GObject      *source,
 818                                  GAsyncResult *result,
 819                                  gpointer      user_data)
 820 {
 821   CommandLineData *data = user_data;
 822   GError *error = NULL;
 823   GVariant *reply;
 824
 825   reply = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source),
 826                                          result, &error);
 827
 828   if (reply != NULL)
 829     {
 830       g_variant_get (reply, "(i)", &data->status);
 831       g_variant_unref (reply);
 832     }
 833
 834   else
 835     {
 836       g_printerr ("%s\n", error->message);
 837       g_error_free (error);
 838       data->status = 1;
 839     }
 840
 841   g_main_loop_quit (data->loop);
 842 }
 843
 844 int
 845 g_application_impl_command_line (GApplicationImpl  *impl,
 846                                  gchar            **arguments,
 847                                  GVariant          *platform_data)
 848 {
 849   const static GDBusInterfaceVTable vtable = {
 850     g_application_impl_cmdline_method_call
 851   };
 852   const gchar *object_path = "/org/gtk/Application/CommandLine";
 853   GMainContext *context;
 854   CommandLineData data;
 855   guint object_id;
 856
 857   context = g_main_context_new ();
 858   data.loop = g_main_loop_new (context, FALSE);
 859   g_main_context_push_thread_default (context);
 860
 861   object_id = g_dbus_connection_register_object (impl->session_bus,
 862                                                  object_path,
 863                                                  (GDBusInterfaceInfo *)
 864                                                    &org_gtk_private_Cmdline,
 865                                                  &vtable, &data, NULL, NULL);
 866   /* In theory we should try other paths... */
 867   g_assert (object_id != 0);
 868
 869   g_dbus_connection_call (impl->session_bus,
 870                           impl->bus_name,
 871                           impl->object_path,
 872                           "org.gtk.Application",
 873                           "CommandLine",
 874                           g_variant_new ("(o^aay@a{sv})", object_path,
 875                                          arguments, platform_data),
 876                           G_VARIANT_TYPE ("(i)"), 0, G_MAXINT, NULL,
 877                           g_application_impl_cmdline_done, &data);
 878
 879   g_main_loop_run (data.loop);
 880
 881   g_main_context_pop_thread_default (context);
 882   g_main_context_unref (context);
 883   g_main_loop_unref (data.loop);
 884
 885   return data.status;
 886 }
 887
 888 void
 889 g_application_impl_change_action_state (GApplicationImpl *impl,
 890                                         const gchar      *action_name,
 891                                         GVariant         *value,
 892                                         GVariant         *platform_data)
 893 {
 894   g_dbus_connection_call (impl->session_bus,
 895                           impl->bus_name,
 896                           impl->object_path,
 897                           "org.gtk.Actions",
 898                           "SetState",
 899                           g_variant_new ("(sv@a{sv})", action_name,
 900                                          value, platform_data),
 901                           NULL, 0, -1, NULL, NULL, NULL);
 902 }
 903
 904 void
 905 g_application_impl_activate_action (GApplicationImpl *impl,
 906                                     const gchar      *action_name,
 907                                     GVariant         *parameter,
 908                                     GVariant         *platform_data)
 909 {
 910   GVariant *param;
 911
 912   if (parameter)
 913     parameter = g_variant_new_variant (parameter);
 914
 915   param = g_variant_new_array (G_VARIANT_TYPE_VARIANT,
 916                                &parameter, parameter != NULL);
 917
 918   g_dbus_connection_call (impl->session_bus,
 919                           impl->bus_name,
 920                           impl->object_path,
 921                           "org.gtk.Actions",
 922                           "Activate",
 923                           g_variant_new ("(s@av@a{sv})", action_name,
 924                                          param, platform_data),
 925                           NULL, 0, -1, NULL, NULL, NULL);
 926 }
 927
 928 void
 929 g_application_impl_flush (GApplicationImpl *impl)
 930 {
 931   g_dbus_connection_flush_sync (impl->session_bus, NULL, NULL);
 932 }
 933
 934
 935 /* GDBusCommandLine implementation {{{1 */
 936
 937 typedef GApplicationCommandLineClass GDBusCommandLineClass;
 938 static GType g_dbus_command_line_get_type (void);
 939 typedef struct
 940 {
 941   GApplicationCommandLine  parent_instance;
 942   GDBusMethodInvocation   *invocation;
 943
 944   GDBusConnection *connection;
 945   const gchar     *bus_name;
 946   const gchar     *object_path;
 947 } GDBusCommandLine;
 948
 949
 950 G_DEFINE_TYPE (GDBusCommandLine,
 951                g_dbus_command_line,
 952                G_TYPE_APPLICATION_COMMAND_LINE)
 953
 954 static void
 955 g_dbus_command_line_print_literal (GApplicationCommandLine *cmdline,
 956                                    const gchar             *message)
 957 {
 958   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 959
 960   g_dbus_connection_call (gdbcl->connection,
 961                           gdbcl->bus_name,
 962                           gdbcl->object_path,
 963                           "org.gtk.private.CommandLine", "Print",
 964                           g_variant_new ("(s)", message),
 965                           NULL, 0, -1, NULL, NULL, NULL);
 966 }
 967
 968 static void
 969 g_dbus_command_line_printerr_literal (GApplicationCommandLine *cmdline,
 970                                       const gchar             *message)
 971 {
 972   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 973
 974   g_dbus_connection_call (gdbcl->connection,
 975                           gdbcl->bus_name,
 976                           gdbcl->object_path,
 977                           "org.gtk.private.CommandLine", "PrintError",
 978                           g_variant_new ("(s)", message),
 979                           NULL, 0, -1, NULL, NULL, NULL);
 980 }
 981
 982 static void
 983 g_dbus_command_line_finalize (GObject *object)
 984 {
 985   GApplicationCommandLine *cmdline = G_APPLICATION_COMMAND_LINE (object);
 986   GDBusCommandLine *gdbcl = (GDBusCommandLine *) object;
 987   gint status;
 988
 989   status = g_application_command_line_get_exit_status (cmdline);
 990
 991   g_dbus_method_invocation_return_value (gdbcl->invocation,
 992                                          g_variant_new ("(i)", status));
 993   g_object_unref (gdbcl->invocation);
 994
 995   G_OBJECT_CLASS (g_dbus_command_line_parent_class)
 996     ->finalize (object);
 997 }
 998
 999 static void
1000 g_dbus_command_line_init (GDBusCommandLine *gdbcl)
1001 {
1002 }
1003
1004 static void
1005 g_dbus_command_line_class_init (GApplicationCommandLineClass *class)
1006 {
1007   GObjectClass *object_class = G_OBJECT_CLASS (class);
1008
1009   object_class->finalize = g_dbus_command_line_finalize;
1010   class->printerr_literal = g_dbus_command_line_printerr_literal;
1011   class->print_literal = g_dbus_command_line_print_literal;
1012 }
1013
1014 static GApplicationCommandLine *
1015 g_dbus_command_line_new (GDBusMethodInvocation *invocation)
1016 {
1017   GDBusCommandLine *gdbcl;
1018   GVariant *args;
1019
1020   args = g_dbus_method_invocation_get_parameters (invocation);
1021
1022   gdbcl = g_object_new (g_dbus_command_line_get_type (),
1023                         "arguments", g_variant_get_child_value (args, 1),
1024                         "platform-data", g_variant_get_child_value (args, 2),
1025                         NULL);
1026   gdbcl->connection = g_dbus_method_invocation_get_connection (invocation);
1027   gdbcl->bus_name = g_dbus_method_invocation_get_sender (invocation);
1028   g_variant_get_child (args, 0, "&o", &gdbcl->object_path);
1029   gdbcl->invocation = g_object_ref (invocation);
1030
1031   return G_APPLICATION_COMMAND_LINE (gdbcl);
1032 }
1033
1034 /* Epilogue {{{1 */
1035
1036 /* vim:set foldmethod=marker: */