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
 333   else if (strcmp (method_name, "SetState") == 0)
 334     {
 335       const gchar *action_name;
 336       GVariant *platform_data;
 337       GVariant *state;
 338
 339       g_variant_get (parameters, "(&sv@a{sv})",
 340                      &action_name, &state, &platform_data);
 341
 342       class->before_emit (impl->app, platform_data);
 343       g_action_group_change_action_state (action_group, action_name, state);
 344       class->after_emit (impl->app, platform_data);
 345       g_variant_unref (platform_data);
 346       g_variant_unref (state);
 347
 348       g_dbus_method_invocation_return_value (invocation, NULL);
 349     }
 350
 351   else if (strcmp (method_name, "Activate") == 0)
 352     {
 353       const gchar *action_name;
 354       GVariant *platform_data;
 355       GVariantIter *param;
 356       GVariant *parameter;
 357       GVariant *unboxed_parameter;
 358
 359       g_variant_get (parameters, "(&sav@a{sv})",
 360                      &action_name, &param, &platform_data);
 361       parameter = g_variant_iter_next_value (param);
 362       unboxed_parameter = parameter ? g_variant_get_variant (parameter) : NULL;
 363       g_variant_iter_free (param);
 364
 365       class->before_emit (impl->app, platform_data);
 366       g_action_group_activate_action (action_group, action_name, unboxed_parameter);
 367       class->after_emit (impl->app, platform_data);
 368       g_variant_unref (platform_data);
 369
 370       if (unboxed_parameter)
 371         g_variant_unref (unboxed_parameter);
 372       if (parameter)
 373         g_variant_unref (parameter);
 374
 375       g_dbus_method_invocation_return_value (invocation, NULL);
 376     }
 377
 378   else
 379     g_assert_not_reached ();
 380 }
 381
 382 static gchar *
 383 application_path_from_appid (const gchar *appid)
 384 {
 385   gchar *appid_path, *iter;
 386
 387   appid_path = g_strconcat ("/", appid, NULL);
 388   for (iter = appid_path; *iter; iter++)
 389     {
 390       if (*iter == '.')
 391         *iter = '/';
 392     }
 393
 394   return appid_path;
 395 }
 396
 397 void
 398 g_application_impl_destroy (GApplicationImpl *impl)
 399 {
 400   if (impl->session_bus)
 401     {
 402       if (impl->object_id)
 403         g_dbus_connection_unregister_object (impl->session_bus,
 404                                              impl->object_id);
 405
 406       g_object_unref (impl->session_bus);
 407       g_free (impl->object_path);
 408     }
 409   else
 410     {
 411       g_assert (impl->object_path == NULL);
 412       g_assert (impl->object_id == 0);
 413     }
 414
 415   g_slice_free (GApplicationImpl, impl);
 416 }
 417
 418 RemoteActionInfo *
 419 remote_action_info_new_from_iter (GVariantIter *iter)
 420 {
 421   RemoteActionInfo *info;
 422   const gchar *name;
 423   GVariant *param_type;
 424   gboolean enabled;
 425   GVariant *state;
 426
 427   if (!g_variant_iter_next (iter, "(s@avb@av)", &name,
 428                             &param_type, &enabled, &state))
 429     return NULL;
 430
 431   info = g_slice_new (RemoteActionInfo);
 432   info->parameter_type = g_variant_type_copy (
 433                            g_variant_type_element (
 434                              g_variant_get_type (param_type)));
 435   info->enabled = enabled;
 436   info->state = state;
 437
 438   g_variant_unref (param_type);
 439
 440   return info;
 441 }
 442
 443 static void
 444 g_application_impl_action_signal (GDBusConnection *connection,
 445                                   const gchar     *sender_name,
 446                                   const gchar     *object_path,
 447                                   const gchar     *interface_name,
 448                                   const gchar     *signal_name,
 449                                   GVariant        *parameters,
 450                                   gpointer         user_data)
 451 {
 452   GApplicationImpl *impl = user_data;
 453   GActionGroup *action_group;
 454
 455   action_group = G_ACTION_GROUP (impl->app);
 456
 457   if (strcmp (signal_name, "Added") == 0 &&
 458       g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(a(savbav))")))
 459     {
 460       RemoteActionInfo *info;
 461       GVariantIter *iter;
 462
 463       g_variant_get_child (parameters, 0, "a(savbav)", &iter);
 464
 465       while ((info = remote_action_info_new_from_iter (iter)))
 466         {
 467           g_hash_table_replace (impl->actions, info->name, info);
 468           g_action_group_action_added (action_group, info->name);
 469         }
 470
 471       g_variant_iter_free (iter);
 472     }
 473
 474   else if (strcmp (signal_name, "Removed") == 0 &&
 475            g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(as)")))
 476     {
 477       GVariantIter *iter;
 478       const gchar *name;
 479
 480       g_variant_get_child (parameters, 0, "as", &iter);
 481       while (g_variant_iter_next (iter, "&s", &name))
 482         if (g_hash_table_remove (impl->actions, name))
 483           g_action_group_action_removed (action_group, name);
 484       g_variant_iter_free (iter);
 485     }
 486
 487   else if (strcmp (signal_name, "EnabledChanged") == 0 &&
 488            g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(sb)")))
 489     {
 490       RemoteActionInfo *info;
 491       const gchar *name;
 492       gboolean enabled;
 493
 494       g_variant_get (parameters, "(&sb)", &name, &enabled);
 495       info = g_hash_table_lookup (impl->actions, name);
 496
 497       if (info && enabled != info->enabled)
 498         {
 499           info->enabled = enabled;
 500           g_action_group_action_enabled_changed (action_group,
 501                                                  info->name,
 502                                                  enabled);
 503         }
 504     }
 505
 506   else if (strcmp (signal_name, "StateChanged") == 0 &&
 507            g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(sv)")))
 508     {
 509       RemoteActionInfo *info;
 510       const gchar *name;
 511       GVariant *state;
 512
 513       g_variant_get (parameters, "(&sv)", &name, &state);
 514       info = g_hash_table_lookup (impl->actions, name);
 515
 516       if (info && info->state &&
 517           g_variant_is_of_type (state, g_variant_get_type (info->state)) &&
 518           !g_variant_equal (state, info->state))
 519         {
 520           g_variant_unref (info->state);
 521           info->state = g_variant_ref (state);
 522           g_action_group_action_state_changed (action_group,
 523                                                info->name,
 524                                                state);
 525         }
 526       g_variant_unref (state);
 527     }
 528 }
 529
 530 GApplicationImpl *
 531 g_application_impl_register (GApplication       *application,
 532                              const gchar        *appid,
 533                              GApplicationFlags   flags,
 534                              GHashTable        **remote_actions,
 535                              GCancellable       *cancellable,
 536                              GError            **error)
 537 {
 538   const static GDBusInterfaceVTable vtable = {
 539     g_application_impl_method_call
 540   };
 541   const static GDBusInterfaceVTable actions_vtable = {
 542     g_application_impl_actions_method_call
 543   };
 544   GApplicationImpl *impl;
 545   GVariant *reply;
 546   guint32 rval;
 547
 548   impl = g_slice_new (GApplicationImpl);
 549
 550   impl->app = application;
 551   impl->bus_name = appid;
 552
 553   impl->session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION,
 554                                       cancellable, error);
 555
 556   if (impl->session_bus == NULL)
 557     {
 558       g_slice_free (GApplicationImpl, impl);
 559       return NULL;
 560     }
 561
 562   impl->object_path = application_path_from_appid (appid);
 563
 564   /* Only try to be the primary instance if
 565    * G_APPLICATION_IS_LAUNCHER was not specified.
 566    */
 567   if (~flags & G_APPLICATION_IS_LAUNCHER)
 568     {
 569       /* Attempt to become primary instance. */
 570       impl->object_id =
 571         g_dbus_connection_register_object (impl->session_bus,
 572                                            impl->object_path,
 573                                            (GDBusInterfaceInfo *)
 574                                              &org_gtk_Application,
 575                                            &vtable, impl, NULL, error);
 576
 577       if (impl->object_id == 0)
 578         {
 579           g_object_unref (impl->session_bus);
 580           g_free (impl->object_path);
 581           impl->session_bus = NULL;
 582           impl->object_path = NULL;
 583
 584           g_slice_free (GApplicationImpl, impl);
 585           return NULL;
 586         }
 587
 588       impl->action_id =
 589         g_dbus_connection_register_object (impl->session_bus,
 590                                            impl->object_path,
 591                                            (GDBusInterfaceInfo *)
 592                                              &org_gtk_Actions,
 593                                            &actions_vtable,
 594                                            impl, NULL, error);
 595
 596       if (impl->action_id == 0)
 597         {
 598           g_dbus_connection_unregister_object (impl->session_bus,
 599                                                impl->object_id);
 600
 601           g_object_unref (impl->session_bus);
 602           g_free (impl->object_path);
 603           impl->session_bus = NULL;
 604           impl->object_path = NULL;
 605
 606           g_slice_free (GApplicationImpl, impl);
 607           return NULL;
 608         }
 609
 610       /* DBUS_NAME_FLAG_DO_NOT_QUEUE: 0x4 */
 611       reply = g_dbus_connection_call_sync (impl->session_bus,
 612                                            "org.freedesktop.DBus",
 613                                            "/org/freedesktop/DBus",
 614                                            "org.freedesktop.DBus",
 615                                            "RequestName",
 616                                            g_variant_new ("(su)",
 617                                                           impl->bus_name,
 618                                                           0x4),
 619                                            G_VARIANT_TYPE ("(u)"),
 620                                            0, -1, cancellable, error);
 621
 622       if (reply == NULL)
 623         {
 624           g_dbus_connection_unregister_object (impl->session_bus,
 625                                                impl->object_id);
 626           impl->object_id = 0;
 627
 628           g_object_unref (impl->session_bus);
 629           g_free (impl->object_path);
 630           impl->session_bus = NULL;
 631           impl->object_path = NULL;
 632
 633           g_slice_free (GApplicationImpl, impl);
 634           return NULL;
 635         }
 636
 637       g_variant_get (reply, "(u)", &rval);
 638       g_variant_unref (reply);
 639
 640       /* DBUS_REQUEST_NAME_REPLY_EXISTS: 3 */
 641       if (rval != 3)
 642         {
 643           /* We are the primary instance. */
 644           g_dbus_connection_emit_signal (impl->session_bus,
 645                                          NULL,
 646                                          impl->object_path,
 647                                          "org.gtk.Application",
 648                                          "Hello",
 649                                          g_variant_new ("(s)",
 650                                                         impl->bus_name),
 651                                          NULL);
 652           *remote_actions = NULL;
 653           return impl;
 654         }
 655
 656       /* We didn't make it.  Drop our service-side stuff. */
 657       g_dbus_connection_unregister_object (impl->session_bus,
 658                                            impl->object_id);
 659       impl->object_id = 0;
 660
 661       if (flags & G_APPLICATION_IS_SERVICE)
 662         {
 663           g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
 664                        "Unable to acquire bus name `%s'", appid);
 665           g_object_unref (impl->session_bus);
 666           g_free (impl->object_path);
 667
 668           g_slice_free (GApplicationImpl, impl);
 669           impl = NULL;
 670         }
 671     }
 672
 673   /* We are non-primary.  Try to get the primary's list of actions.
 674    * This also serves as a mechanism to ensure that the primary exists
 675    * (ie: DBus service files installed correctly, etc).
 676    */
 677   impl->signal_id =
 678     g_dbus_connection_signal_subscribe (impl->session_bus, impl->bus_name,
 679                                         "org.gtk.Actions", NULL,
 680                                         impl->object_path, NULL,
 681                                         G_DBUS_SIGNAL_FLAGS_NONE,
 682                                         g_application_impl_action_signal,
 683                                         impl, NULL);
 684
 685   reply = g_dbus_connection_call_sync (impl->session_bus, impl->bus_name,
 686                                        impl->object_path, "org.gtk.Actions",
 687                                        "DescribeAll", NULL,
 688                                        G_VARIANT_TYPE ("(a(savbav))"),
 689                                        G_DBUS_CALL_FLAGS_NONE, -1,
 690                                        cancellable, error);
 691
 692   if (reply == NULL)
 693     {
 694       /* The primary appears not to exist.  Fail the registration. */
 695       g_object_unref (impl->session_bus);
 696       g_free (impl->object_path);
 697       impl->session_bus = NULL;
 698       impl->object_path = NULL;
 699
 700       g_slice_free (GApplicationImpl, impl);
 701       return NULL;
 702     }
 703
 704   /* Create and populate the hashtable */
 705   {
 706     GVariant *descriptions;
 707     GVariantIter iter;
 708     GVariant *param_type;
 709     gboolean enabled;
 710     GVariant *state;
 711     gchar *name;
 712
 713     *remote_actions = g_hash_table_new (g_str_hash, g_str_equal);
 714     descriptions = g_variant_get_child_value (reply, 0);
 715     g_variant_iter_init (&iter, descriptions);
 716
 717     while (g_variant_iter_next (&iter, "(s@avb@av)", &name,
 718                                 &param_type, &enabled, &state))
 719       {
 720         RemoteActionInfo *action;
 721
 722         action = g_slice_new (RemoteActionInfo);
 723         action->parameter_type = g_variant_type_copy (
 724                                    g_variant_type_element (
 725                                      g_variant_get_type (param_type)));
 726         action->enabled = enabled;
 727         action->state = state;
 728
 729         g_hash_table_insert (*remote_actions, name, action);
 730         g_variant_unref (param_type);
 731       }
 732
 733     g_variant_unref (descriptions);
 734   }
 735
 736
 737   return impl;
 738 }
 739
 740 void
 741 g_application_impl_activate (GApplicationImpl *impl,
 742                              GVariant         *platform_data)
 743 {
 744   g_dbus_connection_call (impl->session_bus,
 745                           impl->bus_name,
 746                           impl->object_path,
 747                           "org.gtk.Application",
 748                           "Activate",
 749                           g_variant_new ("(@a{sv})", platform_data),
 750                           NULL, 0, -1, NULL, NULL, NULL);
 751 }
 752
 753 void
 754 g_application_impl_open (GApplicationImpl  *impl,
 755                          GFile            **files,
 756                          gint               n_files,
 757                          const gchar       *hint,
 758                          GVariant          *platform_data)
 759 {
 760   GVariantBuilder builder;
 761   gint i;
 762
 763   g_variant_builder_init (&builder, G_VARIANT_TYPE ("(assa{sv})"));
 764   g_variant_builder_open (&builder, G_VARIANT_TYPE_STRING_ARRAY);
 765   for (i = 0; i < n_files; i++)
 766     {
 767       gchar *uri = g_file_get_uri (files[i]);
 768       g_variant_builder_add (&builder, "s", uri);
 769       g_free (uri);
 770     }
 771   g_variant_builder_close (&builder);
 772   g_variant_builder_add (&builder, "s", hint);
 773   g_variant_builder_add_value (&builder, platform_data);
 774
 775   g_dbus_connection_call (impl->session_bus,
 776                           impl->bus_name,
 777                           impl->object_path,
 778                           "org.gtk.Application",
 779                           "Open",
 780                           g_variant_builder_end (&builder),
 781                           NULL, 0, -1, NULL, NULL, NULL);
 782 }
 783
 784 static void
 785 g_application_impl_cmdline_method_call (GDBusConnection       *connection,
 786                                         const gchar           *sender,
 787                                         const gchar           *object_path,
 788                                         const gchar           *interface_name,
 789                                         const gchar           *method_name,
 790                                         GVariant              *parameters,
 791                                         GDBusMethodInvocation *invocation,
 792                                         gpointer               user_data)
 793 {
 794   const gchar *message;
 795
 796   g_variant_get_child (parameters, 0, "&s", &message);
 797
 798   if (strcmp (method_name, "Print") == 0)
 799     g_print ("%s", message);
 800   else if (strcmp (method_name, "PrintError") == 0)
 801     g_printerr ("%s", message);
 802   else
 803     g_assert_not_reached ();
 804
 805   g_dbus_method_invocation_return_value (invocation, NULL);
 806 }
 807
 808 typedef struct
 809 {
 810   GMainLoop *loop;
 811   int status;
 812 } CommandLineData;
 813
 814 static void
 815 g_application_impl_cmdline_done (GObject      *source,
 816                                  GAsyncResult *result,
 817                                  gpointer      user_data)
 818 {
 819   CommandLineData *data = user_data;
 820   GError *error = NULL;
 821   GVariant *reply;
 822
 823   reply = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source),
 824                                          result, &error);
 825
 826   if (reply != NULL)
 827     {
 828       g_variant_get (reply, "(i)", &data->status);
 829       g_variant_unref (reply);
 830     }
 831
 832   else
 833     {
 834       g_printerr ("%s\n", error->message);
 835       g_error_free (error);
 836       data->status = 1;
 837     }
 838
 839   g_main_loop_quit (data->loop);
 840 }
 841
 842 int
 843 g_application_impl_command_line (GApplicationImpl  *impl,
 844                                  gchar            **arguments,
 845                                  GVariant          *platform_data)
 846 {
 847   const static GDBusInterfaceVTable vtable = {
 848     g_application_impl_cmdline_method_call
 849   };
 850   const gchar *object_path = "/org/gtk/Application/CommandLine";
 851   GMainContext *context;
 852   CommandLineData data;
 853   guint object_id;
 854
 855   context = g_main_context_new ();
 856   data.loop = g_main_loop_new (context, FALSE);
 857   g_main_context_push_thread_default (context);
 858
 859   object_id = g_dbus_connection_register_object (impl->session_bus,
 860                                                  object_path,
 861                                                  (GDBusInterfaceInfo *)
 862                                                    &org_gtk_private_Cmdline,
 863                                                  &vtable, &data, NULL, NULL);
 864   /* In theory we should try other paths... */
 865   g_assert (object_id != 0);
 866
 867   g_dbus_connection_call (impl->session_bus,
 868                           impl->bus_name,
 869                           impl->object_path,
 870                           "org.gtk.Application",
 871                           "CommandLine",
 872                           g_variant_new ("(o^aay@a{sv})", object_path,
 873                                          arguments, platform_data),
 874                           G_VARIANT_TYPE ("(i)"), 0, G_MAXINT, NULL,
 875                           g_application_impl_cmdline_done, &data);
 876
 877   g_main_loop_run (data.loop);
 878
 879   g_main_context_pop_thread_default (context);
 880   g_main_context_unref (context);
 881   g_main_loop_unref (data.loop);
 882
 883   return data.status;
 884 }
 885
 886 void
 887 g_application_impl_change_action_state (GApplicationImpl *impl,
 888                                         const gchar      *action_name,
 889                                         GVariant         *value,
 890                                         GVariant         *platform_data)
 891 {
 892   g_dbus_connection_call (impl->session_bus,
 893                           impl->bus_name,
 894                           impl->object_path,
 895                           "org.gtk.Actions",
 896                           "SetState",
 897                           g_variant_new ("(sv@a{sv})", action_name,
 898                                          value, platform_data),
 899                           NULL, 0, -1, NULL, NULL, NULL);
 900 }
 901
 902 void
 903 g_application_impl_activate_action (GApplicationImpl *impl,
 904                                     const gchar      *action_name,
 905                                     GVariant         *parameter,
 906                                     GVariant         *platform_data)
 907 {
 908   GVariant *param;
 909
 910   if (parameter)
 911     parameter = g_variant_new_variant (parameter);
 912
 913   param = g_variant_new_array (G_VARIANT_TYPE_VARIANT,
 914                                &parameter, parameter != NULL);
 915
 916   g_dbus_connection_call (impl->session_bus,
 917                           impl->bus_name,
 918                           impl->object_path,
 919                           "org.gtk.Actions",
 920                           "Activate",
 921                           g_variant_new ("(s@av@a{sv})", action_name,
 922                                          param, platform_data),
 923                           NULL, 0, -1, NULL, NULL, NULL);
 924 }
 925
 926 void
 927 g_application_impl_flush (GApplicationImpl *impl)
 928 {
 929   g_dbus_connection_flush_sync (impl->session_bus, NULL, NULL);
 930 }
 931
 932
 933 /* GDBusCommandLine implementation {{{1 */
 934
 935 typedef GApplicationCommandLineClass GDBusCommandLineClass;
 936 static GType g_dbus_command_line_get_type (void);
 937 typedef struct
 938 {
 939   GApplicationCommandLine  parent_instance;
 940   GDBusMethodInvocation   *invocation;
 941
 942   GDBusConnection *connection;
 943   const gchar     *bus_name;
 944   const gchar     *object_path;
 945 } GDBusCommandLine;
 946
 947
 948 G_DEFINE_TYPE (GDBusCommandLine,
 949                g_dbus_command_line,
 950                G_TYPE_APPLICATION_COMMAND_LINE)
 951
 952 static void
 953 g_dbus_command_line_print_literal (GApplicationCommandLine *cmdline,
 954                                    const gchar             *message)
 955 {
 956   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 957
 958   g_dbus_connection_call (gdbcl->connection,
 959                           gdbcl->bus_name,
 960                           gdbcl->object_path,
 961                           "org.gtk.private.CommandLine", "Print",
 962                           g_variant_new ("(s)", message),
 963                           NULL, 0, -1, NULL, NULL, NULL);
 964 }
 965
 966 static void
 967 g_dbus_command_line_printerr_literal (GApplicationCommandLine *cmdline,
 968                                       const gchar             *message)
 969 {
 970   GDBusCommandLine *gdbcl = (GDBusCommandLine *) cmdline;
 971
 972   g_dbus_connection_call (gdbcl->connection,
 973                           gdbcl->bus_name,
 974                           gdbcl->object_path,
 975                           "org.gtk.private.CommandLine", "PrintError",
 976                           g_variant_new ("(s)", message),
 977                           NULL, 0, -1, NULL, NULL, NULL);
 978 }
 979
 980 static void
 981 g_dbus_command_line_finalize (GObject *object)
 982 {
 983   GApplicationCommandLine *cmdline = G_APPLICATION_COMMAND_LINE (object);
 984   GDBusCommandLine *gdbcl = (GDBusCommandLine *) object;
 985   gint status;
 986
 987   status = g_application_command_line_get_exit_status (cmdline);
 988
 989   g_dbus_method_invocation_return_value (gdbcl->invocation,
 990                                          g_variant_new ("(i)", status));
 991   g_object_unref (gdbcl->invocation);
 992
 993   G_OBJECT_CLASS (g_dbus_command_line_parent_class)
 994     ->finalize (object);
 995 }
 996
 997 static void
 998 g_dbus_command_line_init (GDBusCommandLine *gdbcl)
 999 {
1000 }
1001
1002 static void
1003 g_dbus_command_line_class_init (GApplicationCommandLineClass *class)
1004 {
1005   GObjectClass *object_class = G_OBJECT_CLASS (class);
1006
1007   object_class->finalize = g_dbus_command_line_finalize;
1008   class->printerr_literal = g_dbus_command_line_printerr_literal;
1009   class->print_literal = g_dbus_command_line_print_literal;
1010 }
1011
1012 static GApplicationCommandLine *
1013 g_dbus_command_line_new (GDBusMethodInvocation *invocation)
1014 {
1015   GDBusCommandLine *gdbcl;
1016   GVariant *args;
1017
1018   args = g_dbus_method_invocation_get_parameters (invocation);
1019
1020   gdbcl = g_object_new (g_dbus_command_line_get_type (),
1021                         "arguments", g_variant_get_child_value (args, 1),
1022                         "platform-data", g_variant_get_child_value (args, 2),
1023                         NULL);
1024   gdbcl->connection = g_dbus_method_invocation_get_connection (invocation);
1025   gdbcl->bus_name = g_dbus_method_invocation_get_sender (invocation);
1026   g_variant_get_child (args, 0, "&o", &gdbcl->object_path);
1027   gdbcl->invocation = g_object_ref (invocation);
1028
1029   return G_APPLICATION_COMMAND_LINE (gdbcl);
1030 }
1031
1032 /* Epilogue {{{1 */
1033
1034 /* vim:set foldmethod=marker: */