gdbus/object.c

   1 /*
   2  *
   3  *  D-Bus helper library
   4  *
   5  *  Copyright (C) 2004-2011  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 #include <glib.h>
  32 #include <dbus/dbus.h>
  33
  34 #include "gdbus.h"
  35
  36 #define info(fmt...)
  37 #define error(fmt...)
  38 #define debug(fmt...)
  39
  40 struct generic_data {
  41         unsigned int refcount;
  42         GSList *interfaces;
  43         char *introspect;
  44 };
  45
  46 struct interface_data {
  47         char *name;
  48         const GDBusMethodTable *methods;
  49         const GDBusSignalTable *signals;
  50         const GDBusPropertyTable *properties;
  51         void *user_data;
  52         GDBusDestroyFunction destroy;
  53 };
  54
  55 struct security_data {
  56         GDBusPendingReply pending;
  57         DBusMessage *message;
  58         const GDBusMethodTable *method;
  59         void *iface_user_data;
  60 };
  61
  62 static void print_arguments(GString *gstr, const char *sig,
  63                                                 const char *direction)
  64 {
  65         int i;
  66
  67         for (i = 0; sig[i]; i++) {
  68                 char type[32];
  69                 int struct_level, dict_level;
  70                 unsigned int len;
  71                 gboolean complete;
  72
  73                 complete = FALSE;
  74                 struct_level = dict_level = 0;
  75                 memset(type, 0, sizeof(type));
  76
  77                 /* Gather enough data to have a single complete type */
  78                 for (len = 0; len < (sizeof(type) - 1) && sig[i]; len++, i++) {
  79                         switch (sig[i]){
  80                         case '(':
  81                                 struct_level++;
  82                                 break;
  83                         case ')':
  84                                 struct_level--;
  85                                 if (struct_level <= 0 && dict_level <= 0)
  86                                         complete = TRUE;
  87                                 break;
  88                         case '{':
  89                                 dict_level++;
  90                                 break;
  91                         case '}':
  92                                 dict_level--;
  93                                 if (struct_level <= 0 && dict_level <= 0)
  94                                         complete = TRUE;
  95                                 break;
  96                         case 'a':
  97                                 break;
  98                         default:
  99                                 if (struct_level <= 0 && dict_level <= 0)
 100                                         complete = TRUE;
 101                                 break;
 102                         }
 103
 104                         type[len] = sig[i];
 105
 106                         if (complete)
 107                                 break;
 108                 }
 109
 110
 111                 if (direction)
 112                         g_string_append_printf(gstr,
 113                                         "\t\t\t<arg type=\"%s\" direction=\"%s\"/>\n",
 114                                         type, direction);
 115                 else
 116                         g_string_append_printf(gstr,
 117                                         "\t\t\t<arg type=\"%s\"/>\n",
 118                                         type);
 119         }
 120 }
 121
 122 static void generate_interface_xml(GString *gstr, struct interface_data *iface)
 123 {
 124         const GDBusMethodTable *method;
 125         const GDBusSignalTable *signal;
 126
 127         for (method = iface->methods; method && method->name; method++) {
 128                 if (!strlen(method->signature) && !strlen(method->reply))
 129                         g_string_append_printf(gstr, "\t\t<method name=\"%s\"/>\n",
 130                                                                 method->name);
 131                 else {
 132                         g_string_append_printf(gstr, "\t\t<method name=\"%s\">\n",
 133                                                                 method->name);
 134                         print_arguments(gstr, method->signature, "in");
 135                         print_arguments(gstr, method->reply, "out");
 136                         g_string_append_printf(gstr, "\t\t</method>\n");
 137                 }
 138         }
 139
 140         for (signal = iface->signals; signal && signal->name; signal++) {
 141                 if (!strlen(signal->signature))
 142                         g_string_append_printf(gstr, "\t\t<signal name=\"%s\"/>\n",
 143                                                                 signal->name);
 144                 else {
 145                         g_string_append_printf(gstr, "\t\t<signal name=\"%s\">\n",
 146                                                                 signal->name);
 147                         print_arguments(gstr, signal->signature, NULL);
 148                         g_string_append_printf(gstr, "\t\t</signal>\n");
 149                 }
 150         }
 151 }
 152
 153 static void generate_introspection_xml(DBusConnection *conn,
 154                                 struct generic_data *data, const char *path)
 155 {
 156         GSList *list;
 157         GString *gstr;
 158         char **children;
 159         int i;
 160
 161         g_free(data->introspect);
 162
 163         gstr = g_string_new(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE);
 164
 165         g_string_append_printf(gstr, "<node>\n");
 166
 167         for (list = data->interfaces; list; list = list->next) {
 168                 struct interface_data *iface = list->data;
 169
 170                 g_string_append_printf(gstr, "\t<interface name=\"%s\">\n",
 171                                                                 iface->name);
 172
 173                 generate_interface_xml(gstr, iface);
 174
 175                 g_string_append_printf(gstr, "\t</interface>\n");
 176         }
 177
 178         if (!dbus_connection_list_registered(conn, path, &children))
 179                 goto done;
 180
 181         for (i = 0; children[i]; i++)
 182                 g_string_append_printf(gstr, "\t<node name=\"%s\"/>\n",
 183                                                                 children[i]);
 184
 185         dbus_free_string_array(children);
 186
 187 done:
 188         g_string_append_printf(gstr, "</node>\n");
 189
 190         data->introspect = g_string_free(gstr, FALSE);
 191 }
 192
 193 static DBusMessage *introspect(DBusConnection *connection,
 194                                 DBusMessage *message, void *user_data)
 195 {
 196         struct generic_data *data = user_data;
 197         DBusMessage *reply;
 198
 199         if (!dbus_message_has_signature(message, DBUS_TYPE_INVALID_AS_STRING)) {
 200                 error("Unexpected signature to introspect call");
 201                 return NULL;
 202         }
 203
 204         if (data->introspect == NULL)
 205                 generate_introspection_xml(connection, data,
 206                                                 dbus_message_get_path(message));
 207
 208         reply = dbus_message_new_method_return(message);
 209         if (reply == NULL)
 210                 return NULL;
 211
 212         dbus_message_append_args(reply, DBUS_TYPE_STRING, &data->introspect,
 213                                         DBUS_TYPE_INVALID);
 214
 215         return reply;
 216 }
 217
 218 static DBusHandlerResult process_message(DBusConnection *connection,
 219                         DBusMessage *message, const GDBusMethodTable *method,
 220                                                         void *iface_user_data)
 221 {
 222         DBusMessage *reply;
 223
 224         reply = method->function(connection, message, iface_user_data);
 225
 226         if (method->flags & G_DBUS_METHOD_FLAG_NOREPLY) {
 227                 if (reply != NULL)
 228                         dbus_message_unref(reply);
 229                 return DBUS_HANDLER_RESULT_HANDLED;
 230         }
 231
 232         if (method->flags & G_DBUS_METHOD_FLAG_ASYNC) {
 233                 if (reply == NULL)
 234                         return DBUS_HANDLER_RESULT_HANDLED;
 235         }
 236
 237         if (reply == NULL)
 238                 return DBUS_HANDLER_RESULT_NEED_MEMORY;
 239
 240         dbus_connection_send(connection, reply, NULL);
 241         dbus_message_unref(reply);
 242
 243         return DBUS_HANDLER_RESULT_HANDLED;
 244 }
 245
 246 static GDBusPendingReply next_pending = 1;
 247 static GSList *pending_security = NULL;
 248
 249 static const GDBusSecurityTable *security_table = NULL;
 250
 251 void g_dbus_pending_success(DBusConnection *connection,
 252                                         GDBusPendingReply pending)
 253 {
 254         GSList *list;
 255
 256         for (list = pending_security; list; list = list->next) {
 257                 struct security_data *secdata = list->data;
 258                 DBusHandlerResult result;
 259
 260                 if (secdata->pending != pending)
 261                         continue;
 262
 263                 pending_security = g_slist_remove(pending_security, secdata);
 264
 265                 result = process_message(connection, secdata->message,
 266                                 secdata->method, secdata->iface_user_data);
 267
 268                 dbus_message_unref(secdata->message);
 269                 g_free(secdata);
 270                 return;
 271         }
 272 }
 273
 274 void g_dbus_pending_error_valist(DBusConnection *connection,
 275                                 GDBusPendingReply pending, const char *name,
 276                                         const char *format, va_list args)
 277 {
 278         GSList *list;
 279
 280         for (list = pending_security; list; list = list->next) {
 281                 struct security_data *secdata = list->data;
 282                 DBusMessage *reply;
 283
 284                 if (secdata->pending != pending)
 285                         continue;
 286
 287                 pending_security = g_slist_remove(pending_security, secdata);
 288
 289                 reply = g_dbus_create_error_valist(secdata->message,
 290                                                         name, format, args);
 291                 if (reply != NULL) {
 292                         dbus_connection_send(connection, reply, NULL);
 293                         dbus_message_unref(reply);
 294                 }
 295
 296                 dbus_message_unref(secdata->message);
 297                 g_free(secdata);
 298                 return;
 299         }
 300 }
 301
 302 void g_dbus_pending_error(DBusConnection *connection,
 303                                 GDBusPendingReply pending,
 304                                 const char *name, const char *format, ...)
 305 {
 306         va_list args;
 307
 308         va_start(args, format);
 309
 310         g_dbus_pending_error_valist(connection, pending, name, format, args);
 311
 312         va_end(args);
 313 }
 314
 315 int polkit_check_authorization(DBusConnection *conn,
 316                                 const char *action, gboolean interaction,
 317                                 void (*function) (dbus_bool_t authorized,
 318                                                         void *user_data),
 319                                                 void *user_data, int timeout);
 320
 321 struct builtin_security_data {
 322         DBusConnection *conn;
 323         GDBusPendingReply pending;
 324 };
 325
 326 static void builtin_security_result(dbus_bool_t authorized, void *user_data)
 327 {
 328         struct builtin_security_data *data = user_data;
 329
 330         if (authorized == TRUE)
 331                 g_dbus_pending_success(data->conn, data->pending);
 332         else
 333                 g_dbus_pending_error(data->conn, data->pending,
 334                                                 DBUS_ERROR_AUTH_FAILED, NULL);
 335
 336         g_free(data);
 337 }
 338
 339 static void builtin_security_function(DBusConnection *conn,
 340                                                 const char *action,
 341                                                 gboolean interaction,
 342                                                 GDBusPendingReply pending)
 343 {
 344         struct builtin_security_data *data;
 345
 346         data = g_new0(struct builtin_security_data, 1);
 347         data->conn = conn;
 348         data->pending = pending;
 349
 350         if (polkit_check_authorization(conn, action, interaction,
 351                                 builtin_security_result, data, 30000) < 0)
 352                 g_dbus_pending_error(conn, pending, NULL, NULL);
 353 }
 354
 355 static gboolean check_privilege(DBusConnection *conn, DBusMessage *msg,
 356                         const GDBusMethodTable *method, void *iface_user_data)
 357 {
 358         const GDBusSecurityTable *security;
 359
 360         for (security = security_table; security && security->privilege;
 361                                                                 security++) {
 362                 struct security_data *secdata;
 363                 gboolean interaction;
 364
 365                 if (security->privilege != method->privilege)
 366                         continue;
 367
 368                 secdata = g_new(struct security_data, 1);
 369                 secdata->pending = next_pending++;
 370                 secdata->message = dbus_message_ref(msg);
 371                 secdata->method = method;
 372                 secdata->iface_user_data = iface_user_data;
 373
 374                 pending_security = g_slist_prepend(pending_security, secdata);
 375
 376                 if (security->flags & G_DBUS_SECURITY_FLAG_ALLOW_INTERACTION)
 377                         interaction = TRUE;
 378                 else
 379                         interaction = FALSE;
 380
 381                 if (!(security->flags & G_DBUS_SECURITY_FLAG_BUILTIN) &&
 382                                                         security->function)
 383                         security->function(conn, security->action,
 384                                                 interaction, secdata->pending);
 385                 else
 386                         builtin_security_function(conn, security->action,
 387                                                 interaction, secdata->pending);
 388
 389                 return TRUE;
 390         }
 391
 392         return FALSE;
 393 }
 394
 395 static void generic_unregister(DBusConnection *connection, void *user_data)
 396 {
 397         struct generic_data *data = user_data;
 398
 399         g_free(data->introspect);
 400         g_free(data);
 401 }
 402
 403 static struct interface_data *find_interface(GSList *interfaces,
 404                                                 const char *name)
 405 {
 406         GSList *list;
 407
 408         if (name == NULL)
 409                 return NULL;
 410
 411         for (list = interfaces; list; list = list->next) {
 412                 struct interface_data *iface = list->data;
 413                 if (!strcmp(name, iface->name))
 414                         return iface;
 415         }
 416
 417         return NULL;
 418 }
 419
 420 static DBusHandlerResult generic_message(DBusConnection *connection,
 421                                         DBusMessage *message, void *user_data)
 422 {
 423         struct generic_data *data = user_data;
 424         struct interface_data *iface;
 425         const GDBusMethodTable *method;
 426         const char *interface;
 427
 428         interface = dbus_message_get_interface(message);
 429
 430         iface = find_interface(data->interfaces, interface);
 431         if (iface == NULL)
 432                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 433
 434         for (method = iface->methods; method &&
 435                         method->name && method->function; method++) {
 436                 if (dbus_message_is_method_call(message, iface->name,
 437                                                         method->name) == FALSE)
 438                         continue;
 439
 440                 if (dbus_message_has_signature(message,
 441                                                 method->signature) == FALSE)
 442                         continue;
 443
 444                 if (check_privilege(connection, message, method,
 445                                                 iface->user_data) == TRUE)
 446                         return DBUS_HANDLER_RESULT_HANDLED;
 447
 448                 return process_message(connection, message, method,
 449                                                         iface->user_data);
 450         }
 451
 452         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 453 }
 454
 455 static DBusObjectPathVTable generic_table = {
 456         .unregister_function    = generic_unregister,
 457         .message_function       = generic_message,
 458 };
 459
 460 static void invalidate_parent_data(DBusConnection *conn, const char *child_path)
 461 {
 462         struct generic_data *data = NULL;
 463         char *parent_path, *slash;
 464
 465         parent_path = g_strdup(child_path);
 466         slash = strrchr(parent_path, '/');
 467         if (slash == NULL)
 468                 goto done;
 469
 470         if (slash == parent_path && parent_path[1] != '\0')
 471                 parent_path[1] = '\0';
 472         else
 473                 *slash = '\0';
 474
 475         if (!strlen(parent_path))
 476                 goto done;
 477
 478         if (dbus_connection_get_object_path_data(conn, parent_path,
 479                                                         (void *) &data) == FALSE) {
 480                 goto done;
 481         }
 482
 483         invalidate_parent_data(conn, parent_path);
 484
 485         if (data == NULL)
 486                 goto done;
 487
 488         g_free(data->introspect);
 489         data->introspect = NULL;
 490
 491 done:
 492         g_free(parent_path);
 493 }
 494
 495 static GDBusMethodTable introspect_methods[] = {
 496         { "Introspect", "",     "s", introspect },
 497         { }
 498 };
 499
 500 static void add_interface(struct generic_data *data, const char *name,
 501                                 const GDBusMethodTable *methods,
 502                                 const GDBusSignalTable *signals,
 503                                 const GDBusPropertyTable *properties,
 504                                 void *user_data,
 505                                 GDBusDestroyFunction destroy)
 506 {
 507         struct interface_data *iface;
 508
 509         iface = g_new0(struct interface_data, 1);
 510         iface->name = g_strdup(name);
 511         iface->methods = methods;
 512         iface->signals = signals;
 513         iface->properties = properties;
 514         iface->user_data = user_data;
 515         iface->destroy = destroy;
 516
 517         data->interfaces = g_slist_append(data->interfaces, iface);
 518 }
 519
 520 static struct generic_data *object_path_ref(DBusConnection *connection,
 521                                                         const char *path)
 522 {
 523         struct generic_data *data;
 524
 525         if (dbus_connection_get_object_path_data(connection, path,
 526                                                 (void *) &data) == TRUE) {
 527                 if (data != NULL) {
 528                         data->refcount++;
 529                         return data;
 530                 }
 531         }
 532
 533         data = g_new0(struct generic_data, 1);
 534         data->refcount = 1;
 535
 536         data->introspect = g_strdup(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE "<node></node>");
 537
 538         if (!dbus_connection_register_object_path(connection, path,
 539                                                 &generic_table, data)) {
 540                 g_free(data->introspect);
 541                 g_free(data);
 542                 return NULL;
 543         }
 544
 545         invalidate_parent_data(connection, path);
 546
 547         add_interface(data, DBUS_INTERFACE_INTROSPECTABLE,
 548                         introspect_methods, NULL, NULL, data, NULL);
 549
 550         return data;
 551 }
 552
 553 static gboolean remove_interface(struct generic_data *data, const char *name)
 554 {
 555         struct interface_data *iface;
 556
 557         iface = find_interface(data->interfaces, name);
 558         if (iface == NULL)
 559                 return FALSE;
 560
 561         data->interfaces = g_slist_remove(data->interfaces, iface);
 562
 563         if (iface->destroy)
 564                 iface->destroy(iface->user_data);
 565
 566         g_free(iface->name);
 567         g_free(iface);
 568
 569         return TRUE;
 570 }
 571
 572 static void object_path_unref(DBusConnection *connection, const char *path)
 573 {
 574         struct generic_data *data = NULL;
 575
 576         if (dbus_connection_get_object_path_data(connection, path,
 577                                                 (void *) &data) == FALSE)
 578                 return;
 579
 580         if (data == NULL)
 581                 return;
 582
 583         data->refcount--;
 584
 585         if (data->refcount > 0)
 586                 return;
 587
 588         remove_interface(data, DBUS_INTERFACE_INTROSPECTABLE);
 589
 590         invalidate_parent_data(connection, path);
 591
 592         dbus_connection_unregister_object_path(connection, path);
 593 }
 594
 595 static gboolean check_signal(DBusConnection *conn, const char *path,
 596                                 const char *interface, const char *name,
 597                                 const char **args)
 598 {
 599         struct generic_data *data = NULL;
 600         struct interface_data *iface;
 601         const GDBusSignalTable *signal;
 602
 603         *args = NULL;
 604         if (!dbus_connection_get_object_path_data(conn, path,
 605                                         (void *) &data) || data == NULL) {
 606                 error("dbus_connection_emit_signal: path %s isn't registered",
 607                                 path);
 608                 return FALSE;
 609         }
 610
 611         iface = find_interface(data->interfaces, interface);
 612         if (iface == NULL) {
 613                 error("dbus_connection_emit_signal: %s does not implement %s",
 614                                 path, interface);
 615                 return FALSE;
 616         }
 617
 618         for (signal = iface->signals; signal && signal->name; signal++) {
 619                 if (!strcmp(signal->name, name)) {
 620                         *args = signal->signature;
 621                         break;
 622                 }
 623         }
 624
 625         if (*args == NULL) {
 626                 error("No signal named %s on interface %s", name, interface);
 627                 return FALSE;
 628         }
 629
 630         return TRUE;
 631 }
 632
 633 static dbus_bool_t emit_signal_valist(DBusConnection *conn,
 634                                                 const char *path,
 635                                                 const char *interface,
 636                                                 const char *name,
 637                                                 int first,
 638                                                 va_list var_args)
 639 {
 640         DBusMessage *signal;
 641         dbus_bool_t ret;
 642         const char *signature, *args;
 643
 644         if (!check_signal(conn, path, interface, name, &args))
 645                 return FALSE;
 646
 647         signal = dbus_message_new_signal(path, interface, name);
 648         if (signal == NULL) {
 649                 error("Unable to allocate new %s.%s signal", interface,  name);
 650                 return FALSE;
 651         }
 652
 653         ret = dbus_message_append_args_valist(signal, first, var_args);
 654         if (!ret)
 655                 goto fail;
 656
 657         signature = dbus_message_get_signature(signal);
 658         if (strcmp(args, signature) != 0) {
 659                 error("%s.%s: expected signature'%s' but got '%s'",
 660                                 interface, name, args, signature);
 661                 ret = FALSE;
 662                 goto fail;
 663         }
 664
 665         ret = dbus_connection_send(conn, signal, NULL);
 666
 667 fail:
 668         dbus_message_unref(signal);
 669
 670         return ret;
 671 }
 672
 673 gboolean g_dbus_register_interface(DBusConnection *connection,
 674                                         const char *path, const char *name,
 675                                         const GDBusMethodTable *methods,
 676                                         const GDBusSignalTable *signals,
 677                                         const GDBusPropertyTable *properties,
 678                                         void *user_data,
 679                                         GDBusDestroyFunction destroy)
 680 {
 681         struct generic_data *data;
 682
 683         data = object_path_ref(connection, path);
 684         if (data == NULL)
 685                 return FALSE;
 686
 687         if (find_interface(data->interfaces, name)) {
 688                 object_path_unref(connection, path);
 689                 return FALSE;
 690         }
 691
 692         add_interface(data, name, methods, signals,
 693                         properties, user_data, destroy);
 694
 695         g_free(data->introspect);
 696         data->introspect = NULL;
 697
 698         return TRUE;
 699 }
 700
 701 gboolean g_dbus_unregister_interface(DBusConnection *connection,
 702                                         const char *path, const char *name)
 703 {
 704         struct generic_data *data = NULL;
 705
 706         if (path == NULL)
 707                 return FALSE;
 708
 709         if (dbus_connection_get_object_path_data(connection, path,
 710                                                 (void *) &data) == FALSE)
 711                 return FALSE;
 712
 713         if (data == NULL)
 714                 return FALSE;
 715
 716         if (remove_interface(data, name) == FALSE)
 717                 return FALSE;
 718
 719         g_free(data->introspect);
 720         data->introspect = NULL;
 721
 722         object_path_unref(connection, path);
 723
 724         return TRUE;
 725 }
 726
 727 gboolean g_dbus_register_security(const GDBusSecurityTable *security)
 728 {
 729         if (security_table != NULL)
 730                 return FALSE;
 731
 732         security_table = security;
 733
 734         return TRUE;
 735 }
 736
 737 gboolean g_dbus_unregister_security(const GDBusSecurityTable *security)
 738 {
 739         security_table = NULL;
 740
 741         return TRUE;
 742 }
 743
 744 DBusMessage *g_dbus_create_error_valist(DBusMessage *message, const char *name,
 745                                         const char *format, va_list args)
 746 {
 747         char str[1024];
 748
 749         vsnprintf(str, sizeof(str), format, args);
 750
 751         return dbus_message_new_error(message, name, str);
 752 }
 753
 754 DBusMessage *g_dbus_create_error(DBusMessage *message, const char *name,
 755                                                 const char *format, ...)
 756 {
 757         va_list args;
 758         DBusMessage *reply;
 759
 760         va_start(args, format);
 761
 762         reply = g_dbus_create_error_valist(message, name, format, args);
 763
 764         va_end(args);
 765
 766         return reply;
 767 }
 768
 769 DBusMessage *g_dbus_create_reply_valist(DBusMessage *message,
 770                                                 int type, va_list args)
 771 {
 772         DBusMessage *reply;
 773
 774         reply = dbus_message_new_method_return(message);
 775         if (reply == NULL)
 776                 return NULL;
 777
 778         if (dbus_message_append_args_valist(reply, type, args) == FALSE) {
 779                 dbus_message_unref(reply);
 780                 return NULL;
 781         }
 782
 783         return reply;
 784 }
 785
 786 DBusMessage *g_dbus_create_reply(DBusMessage *message, int type, ...)
 787 {
 788         va_list args;
 789         DBusMessage *reply;
 790
 791         va_start(args, type);
 792
 793         reply = g_dbus_create_reply_valist(message, type, args);
 794
 795         va_end(args);
 796
 797         return reply;
 798 }
 799
 800 gboolean g_dbus_send_message(DBusConnection *connection, DBusMessage *message)
 801 {
 802         dbus_bool_t result;
 803
 804         if (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_METHOD_CALL)
 805                 dbus_message_set_no_reply(message, TRUE);
 806
 807         result = dbus_connection_send(connection, message, NULL);
 808
 809         dbus_message_unref(message);
 810
 811         return result;
 812 }
 813
 814 gboolean g_dbus_send_reply_valist(DBusConnection *connection,
 815                                 DBusMessage *message, int type, va_list args)
 816 {
 817         DBusMessage *reply;
 818
 819         reply = dbus_message_new_method_return(message);
 820         if (reply == NULL)
 821                 return FALSE;
 822
 823         if (dbus_message_append_args_valist(reply, type, args) == FALSE) {
 824                 dbus_message_unref(reply);
 825                 return FALSE;
 826         }
 827
 828         return g_dbus_send_message(connection, reply);
 829 }
 830
 831 gboolean g_dbus_send_reply(DBusConnection *connection,
 832                                 DBusMessage *message, int type, ...)
 833 {
 834         va_list args;
 835         gboolean result;
 836
 837         va_start(args, type);
 838
 839         result = g_dbus_send_reply_valist(connection, message, type, args);
 840
 841         va_end(args);
 842
 843         return result;
 844 }
 845
 846 gboolean g_dbus_emit_signal(DBusConnection *connection,
 847                                 const char *path, const char *interface,
 848                                 const char *name, int type, ...)
 849 {
 850         va_list args;
 851         gboolean result;
 852
 853         va_start(args, type);
 854
 855         result = emit_signal_valist(connection, path, interface,
 856                                                         name, type, args);
 857
 858         va_end(args);
 859
 860         return result;
 861 }
 862
 863 gboolean g_dbus_emit_signal_valist(DBusConnection *connection,
 864                                 const char *path, const char *interface,
 865                                 const char *name, int type, va_list args)
 866 {
 867         return emit_signal_valist(connection, path, interface,
 868                                                         name, type, args);
 869 }