client/agent.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2013  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <sys/types.h>
  29 #include <unistd.h>
  30 #include <errno.h>
  31 #include <stdbool.h>
  32 #include <string.h>
  33 #include <ctype.h>
  34
  35 #include <gdbus.h>
  36
  37 #include "input.h"
  38 #include "dbus_helpers.h"
  39 #include "agent.h"
  40
  41 #define AGENT_INTERFACE      "net.connman.Agent"
  42 #define VPN_AGENT_INTERFACE  "net.connman.vpn.Agent"
  43
  44 struct agent_data {
  45         char *interface;
  46         bool registered;
  47         DBusMessage *message;
  48         DBusMessage *reply;
  49         DBusMessageIter iter;
  50         DBusMessageIter dict;
  51         GDBusMethodFunction pending_function;
  52 };
  53
  54 static DBusConnection *agent_connection;
  55
  56 static struct agent_data agent_request = {
  57         AGENT_INTERFACE,
  58 };
  59 static struct agent_data vpn_agent_request = {
  60         VPN_AGENT_INTERFACE,
  61 };
  62
  63 static void request_input_ssid_return(char *input, void *user_data);
  64 static void request_input_passphrase_return(char *input, void *user_data);
  65 static void request_input_string_return(char *input, void *user_data);
  66
  67 static int confirm_input(char *input)
  68 {
  69         int i;
  70
  71         if (input == NULL)
  72                 return -1;
  73
  74         for (i = 0; input[i] != '\0'; i++)
  75                 if (isspace(input[i]) == 0)
  76                         break;
  77
  78         if (strcasecmp(&input[i], "yes") == 0 ||
  79                         strcasecmp(&input[i], "y") == 0)
  80                 return 1;
  81
  82         if (strcasecmp(&input[i], "no") == 0 ||
  83                         strcasecmp(&input[i], "n") == 0)
  84                 return 0;
  85
  86         return -1;
  87 }
  88
  89 static char *strip_path(char *path)
  90 {
  91         char *name = strrchr(path, '/');
  92         if (name != NULL)
  93                 name++;
  94         else
  95                 name = path;
  96
  97         return name;
  98 }
  99
 100 static char *agent_path(void)
 101 {
 102         static char *path = NULL;
 103
 104         if (path == NULL)
 105                 path = g_strdup_printf("/net/connman/connmanctl%d", getpid());
 106
 107         return path;
 108 }
 109
 110 static void pending_message_remove(struct agent_data *request)
 111 {
 112         if (request->message != NULL) {
 113                 dbus_message_unref(request->message);
 114                 request->message = NULL;
 115         }
 116
 117         if (request->reply != NULL) {
 118                 dbus_message_unref(request->reply);
 119                 request->reply = NULL;
 120         }
 121 }
 122
 123 static void pending_command_complete(char *message)
 124 {
 125         struct agent_data *next_request = NULL;
 126         DBusMessage *pending_message;
 127         GDBusMethodFunction pending_function;
 128
 129         __connmanctl_save_rl();
 130
 131         fprintf(stdout, "%s", message);
 132
 133         __connmanctl_redraw_rl();
 134
 135         if (__connmanctl_is_interactive() == true)
 136                 __connmanctl_command_mode();
 137         else
 138                 __connmanctl_agent_mode("", NULL, NULL);
 139
 140         if (agent_request.message != NULL)
 141                 next_request = &agent_request;
 142         else if (vpn_agent_request.message != NULL)
 143                 next_request = &vpn_agent_request;
 144
 145         if (next_request == NULL)
 146                 return;
 147
 148         pending_message = next_request->message;
 149         pending_function = next_request->pending_function;
 150         next_request->pending_function = NULL;
 151
 152         pending_function(agent_connection, next_request->message,
 153                         next_request);
 154
 155         dbus_message_unref(pending_message);
 156 }
 157
 158 static bool handle_message(DBusMessage *message, struct agent_data *request,
 159                 GDBusMethodFunction function)
 160 {
 161         if (agent_request.pending_function == NULL &&
 162                         vpn_agent_request.pending_function == NULL)
 163                 return true;
 164
 165         request->message = dbus_message_ref(message);
 166         request->pending_function = function;
 167
 168         return false;
 169 }
 170
 171 static DBusMessage *agent_release(DBusConnection *connection,
 172                 DBusMessage *message, void *user_data)
 173 {
 174         struct agent_data *request = user_data;
 175
 176         if (handle_message(message, request, agent_release) == false)
 177                 return NULL;
 178
 179         g_dbus_unregister_interface(connection, agent_path(),
 180                         request->interface);
 181         request->registered = false;
 182
 183         pending_message_remove(request);
 184
 185         if (strcmp(request->interface, AGENT_INTERFACE) == 0)
 186                 pending_command_complete("Agent unregistered by ConnMan\n");
 187         else
 188                 pending_command_complete("VPN Agent unregistered by ConnMan "
 189                                 "VPNd\n");
 190
 191         if (__connmanctl_is_interactive() == false)
 192                 __connmanctl_quit();
 193
 194         return dbus_message_new_method_return(message);
 195 }
 196
 197 static DBusMessage *agent_cancel(DBusConnection *connection,
 198                 DBusMessage *message, void *user_data)
 199 {
 200         struct agent_data *request = user_data;
 201
 202         if (handle_message(message, request, agent_cancel) == false)
 203                 return NULL;
 204
 205         pending_message_remove(request);
 206
 207         if (strcmp(request->interface, AGENT_INTERFACE) == 0)
 208                 pending_command_complete("Agent request cancelled by "
 209                                 "ConnMan\n");
 210         else
 211                 pending_command_complete("VPN Agent request cancelled by "
 212                                 "ConnMan VPNd\n");
 213
 214         return dbus_message_new_method_return(message);
 215 }
 216
 217 static void request_browser_return(char *input, void *user_data)
 218 {
 219         struct agent_data *request = user_data;
 220
 221         switch (confirm_input(input)) {
 222         case 1:
 223                 g_dbus_send_reply(agent_connection, request->message,
 224                                 DBUS_TYPE_INVALID);
 225                 break;
 226         case 0:
 227                 g_dbus_send_error(agent_connection, request->message,
 228                                 "net.connman.Agent.Error.Canceled", NULL);
 229                 break;
 230         default:
 231                 return;
 232         }
 233
 234         pending_message_remove(request);
 235         pending_command_complete("");
 236 }
 237
 238 static DBusMessage *agent_request_browser(DBusConnection *connection,
 239                 DBusMessage *message, void *user_data)
 240 {
 241         struct agent_data *request = user_data;
 242         DBusMessageIter iter;
 243         char *service, *url;
 244
 245         if (handle_message(message, request, agent_request_browser) == false)
 246                 return NULL;
 247
 248         dbus_message_iter_init(message, &iter);
 249
 250         dbus_message_iter_get_basic(&iter, &service);
 251         dbus_message_iter_next(&iter);
 252         dbus_message_iter_get_basic(&iter, &url);
 253
 254         __connmanctl_save_rl();
 255         fprintf(stdout, "Agent RequestBrowser %s\n", strip_path(service));
 256         fprintf(stdout, "  %s\n", url);
 257         __connmanctl_redraw_rl();
 258
 259         request->message = dbus_message_ref(message);
 260         __connmanctl_agent_mode("Connected (yes/no)? ",
 261                         request_browser_return, request);
 262
 263         return NULL;
 264 }
 265
 266 static void report_error_return(char *input, void *user_data)
 267 {
 268         struct agent_data *request = user_data;
 269
 270         switch (confirm_input(input)) {
 271         case 1:
 272                 if (strcmp(request->interface, AGENT_INTERFACE) == 0)
 273                         g_dbus_send_error(agent_connection, request->message,
 274                                         "net.connman.Agent.Error.Retry", NULL);
 275                 else
 276                         g_dbus_send_error(agent_connection, request->message,
 277                                         "net.connman.vpn.Agent.Error.Retry",
 278                                         NULL);
 279                 break;
 280         case 0:
 281                 g_dbus_send_reply(agent_connection, request->message,
 282                                 DBUS_TYPE_INVALID);
 283                 break;
 284         default:
 285                 return;
 286         }
 287
 288         pending_message_remove(request);
 289         pending_command_complete("");
 290 }
 291
 292 static DBusMessage *agent_report_error(DBusConnection *connection,
 293                 DBusMessage *message, void *user_data)
 294 {
 295         struct agent_data *request = user_data;
 296         DBusMessageIter iter;
 297         char *path, *service, *error;
 298
 299         if (handle_message(message, request, agent_report_error) == false)
 300                 return NULL;
 301
 302         dbus_message_iter_init(message, &iter);
 303
 304         dbus_message_iter_get_basic(&iter, &path);
 305         service = strip_path(path);
 306
 307         dbus_message_iter_next(&iter);
 308         dbus_message_iter_get_basic(&iter, &error);
 309
 310         __connmanctl_save_rl();
 311         if (strcmp(request->interface, AGENT_INTERFACE) == 0)
 312                 fprintf(stdout, "Agent ReportError %s\n", service);
 313         else
 314                 fprintf(stdout, "VPN Agent ReportError %s\n", service);
 315         fprintf(stdout, "  %s\n", error);
 316         __connmanctl_redraw_rl();
 317
 318         request->message = dbus_message_ref(message);
 319         __connmanctl_agent_mode("Retry (yes/no)? ", report_error_return,
 320                         request);
 321
 322         return NULL;
 323 }
 324
 325 enum requestinput {
 326         SSID                    = 0,
 327         IDENTITY                = 1,
 328         PASSPHRASE              = 2,
 329         WPS                     = 3,
 330         WISPR_USERNAME          = 4,
 331         WISPR_PASSPHRASE        = 5,
 332         REQUEST_INPUT_MAX       = 6,
 333 };
 334
 335 static struct {
 336         const char *attribute;
 337         bool requested;
 338         char *prompt;
 339         connmanctl_input_func_t func;
 340 } agent_input[] = {
 341         { "Name", false, "Hidden SSID name? ", request_input_ssid_return },
 342         { "Identity", false, "EAP username? ", request_input_string_return },
 343         { "Passphrase", false, "Passphrase? ",
 344           request_input_passphrase_return },
 345         { "WPS", false, "WPS PIN (empty line for pushbutton)? " ,
 346           request_input_string_return },
 347         { "Username", false, "WISPr username? ", request_input_string_return },
 348         { "Password", false, "WISPr password? ", request_input_string_return },
 349         { },
 350 };
 351
 352 static void request_input_next(struct agent_data *request)
 353 {
 354         int i;
 355
 356         for (i = 0; agent_input[i].attribute != NULL; i++) {
 357                 if (agent_input[i].requested == true) {
 358                         if(agent_input[i].func != NULL)
 359                                 __connmanctl_agent_mode(agent_input[i].prompt,
 360                                                 agent_input[i].func, request);
 361                         else
 362                                 agent_input[i].requested = false;
 363                         return;
 364                 }
 365         }
 366
 367         dbus_message_iter_close_container(&request->iter, &request->dict);
 368
 369         g_dbus_send_message(agent_connection, request->reply);
 370         request->reply = NULL;
 371
 372         pending_message_remove(request);
 373         pending_command_complete("");
 374
 375         __connmanctl_redraw_rl();
 376 }
 377
 378 static void request_input_append(struct agent_data *request,
 379                 const char *attribute, char *value)
 380 {
 381         __connmanctl_dbus_append_dict_entry(&request->dict, attribute,
 382                         DBUS_TYPE_STRING, &value);
 383 }
 384
 385 static void request_input_ssid_return(char *input,
 386                 void *user_data)
 387 {
 388         struct agent_data *request = user_data;
 389         int len = 0;
 390
 391         if (input != NULL)
 392                 len = strlen(input);
 393
 394         if (len > 0 && len <= 32) {
 395                 agent_input[SSID].requested = false;
 396                 request_input_append(request, agent_input[SSID].attribute,
 397                                 input);
 398
 399                 request_input_next(request);
 400         }
 401 }
 402
 403 static void request_input_passphrase_return(char *input, void *user_data)
 404 {
 405         struct agent_data *request = user_data;
 406
 407         /* TBD passphrase length checking */
 408
 409         if (input != NULL && strlen(input) > 0) {
 410                 agent_input[PASSPHRASE].requested = false;
 411                 request_input_append(request,
 412                                 agent_input[PASSPHRASE].attribute, input);
 413
 414                 agent_input[WPS].requested = false;
 415
 416                 request_input_next(request);
 417         }
 418 }
 419
 420 static void request_input_string_return(char *input, void *user_data)
 421 {
 422         struct agent_data *request = user_data;
 423         int i;
 424
 425         for (i = 0; agent_input[i].attribute != NULL; i++) {
 426                 if (agent_input[i].requested == true) {
 427                         request_input_append(request, agent_input[i].attribute,
 428                                         input);
 429                         agent_input[i].requested = false;
 430                         break;
 431                 }
 432         }
 433
 434         request_input_next(request);
 435 }
 436
 437 static DBusMessage *agent_request_input(DBusConnection *connection,
 438                 DBusMessage *message, void *user_data)
 439 {
 440         struct agent_data *request = user_data;
 441         DBusMessageIter iter, dict, entry, variant;
 442         char *service, *str, *field;
 443         DBusMessageIter dict_entry, field_entry, field_value;
 444         char *argument, *value, *attr_type;
 445
 446         int i;
 447
 448         if (handle_message(message, request, agent_request_input) == false)
 449                 return NULL;
 450
 451         dbus_message_iter_init(message, &iter);
 452
 453         dbus_message_iter_get_basic(&iter, &str);
 454         service = strip_path(str);
 455
 456         dbus_message_iter_next(&iter);
 457         dbus_message_iter_recurse(&iter, &dict);
 458
 459         __connmanctl_save_rl();
 460         fprintf(stdout, "Agent RequestInput %s\n", service);
 461         __connmanctl_dbus_print(&dict, "  ", " = ", "\n");
 462         fprintf(stdout, "\n");
 463
 464         dbus_message_iter_recurse(&iter, &dict);
 465
 466         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
 467
 468                 dbus_message_iter_recurse(&dict, &entry);
 469
 470                 dbus_message_iter_get_basic(&entry, &field);
 471
 472                 dbus_message_iter_next(&entry);
 473
 474                 dbus_message_iter_recurse(&entry, &variant);
 475                 dbus_message_iter_recurse(&variant, &dict_entry);
 476
 477                 while (dbus_message_iter_get_arg_type(&dict_entry)
 478                                 == DBUS_TYPE_DICT_ENTRY) {
 479                         dbus_message_iter_recurse(&dict_entry, &field_entry);
 480
 481                         dbus_message_iter_get_basic(&field_entry, &argument);
 482
 483                         dbus_message_iter_next(&field_entry);
 484
 485                         dbus_message_iter_recurse(&field_entry, &field_value);
 486
 487                         if (strcmp(argument, "Type") == 0) {
 488                                 dbus_message_iter_get_basic(&field_value,
 489                                                 &value);
 490                                 attr_type = g_strdup(value);
 491                         }
 492
 493                         dbus_message_iter_next(&dict_entry);
 494                 }
 495
 496                 for (i = 0; agent_input[i].attribute != NULL; i++) {
 497                         if (strcmp(field, agent_input[i].attribute) == 0) {
 498                                 agent_input[i].requested = true;
 499                                 break;
 500                         }
 501                 }
 502
 503                 g_free(attr_type);
 504                 attr_type = NULL;
 505
 506                 dbus_message_iter_next(&dict);
 507         }
 508
 509         request->reply = dbus_message_new_method_return(message);
 510         dbus_message_iter_init_append(request->reply, &request->iter);
 511
 512         dbus_message_iter_open_container(&request->iter, DBUS_TYPE_ARRAY,
 513                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 514                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 515                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 516                         &request->dict);
 517
 518         request_input_next(request);
 519
 520         return NULL;
 521 }
 522
 523 static const GDBusMethodTable agent_methods[] = {
 524         { GDBUS_ASYNC_METHOD("Release", NULL, NULL, agent_release) },
 525         { GDBUS_ASYNC_METHOD("Cancel", NULL, NULL, agent_cancel) },
 526         { GDBUS_ASYNC_METHOD("RequestBrowser",
 527                                 GDBUS_ARGS({ "service", "o" },
 528                                         { "url", "s" }),
 529                                 NULL, agent_request_browser) },
 530         { GDBUS_ASYNC_METHOD("ReportError",
 531                                 GDBUS_ARGS({ "service", "o" },
 532                                         { "error", "s" }),
 533                                 NULL, agent_report_error) },
 534         { GDBUS_ASYNC_METHOD("RequestInput",
 535                                 GDBUS_ARGS({ "service", "o" },
 536                                         { "fields", "a{sv}" }),
 537                                 GDBUS_ARGS({ "fields", "a{sv}" }),
 538                                 agent_request_input) },
 539         { },
 540 };
 541
 542 static int agent_register_return(DBusMessageIter *iter, const char *error,
 543                 void *user_data)
 544 {
 545         DBusConnection *connection = user_data;
 546
 547         if (error != NULL) {
 548                 g_dbus_unregister_interface(connection, agent_path(),
 549                                 AGENT_INTERFACE);
 550                 fprintf(stderr, "Error registering Agent: %s\n", error);
 551                 return 0;
 552         }
 553
 554         agent_request.registered = true;
 555         fprintf(stdout, "Agent registered\n");
 556
 557         return -EINPROGRESS;
 558 }
 559
 560 int __connmanctl_agent_register(DBusConnection *connection)
 561 {
 562         char *path = agent_path();
 563         int result;
 564
 565         if (agent_request.registered == true) {
 566                 fprintf(stderr, "Agent already registered\n");
 567                 return -EALREADY;
 568         }
 569
 570         agent_connection = connection;
 571
 572         if (g_dbus_register_interface(connection, path,
 573                                         AGENT_INTERFACE, agent_methods,
 574                                         NULL, NULL, &agent_request,
 575                                         NULL) == FALSE) {
 576                 fprintf(stderr, "Error: Failed to register Agent callbacks\n");
 577                 return 0;
 578         }
 579
 580         result = __connmanctl_dbus_method_call(connection, CONNMAN_SERVICE,
 581                         CONNMAN_PATH, "net.connman.Manager", "RegisterAgent",
 582                         agent_register_return, connection,
 583                         DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
 584
 585         if (result != -EINPROGRESS) {
 586                 g_dbus_unregister_interface(connection, agent_path(),
 587                                 AGENT_INTERFACE);
 588
 589                 fprintf(stderr, "Error: Failed to register Agent\n");
 590         }
 591
 592         return result;
 593 }
 594
 595 static int agent_unregister_return(DBusMessageIter *iter, const char *error,
 596                 void *user_data)
 597 {
 598         if (error != NULL) {
 599                 fprintf(stderr, "Error unregistering Agent: %s\n", error);
 600                 return 0;
 601         }
 602
 603         agent_request.registered = false;
 604         fprintf(stdout, "Agent unregistered\n");
 605
 606         return 0;
 607 }
 608
 609 int __connmanctl_agent_unregister(DBusConnection *connection)
 610 {
 611         char *path = agent_path();
 612         int result;
 613
 614         if (agent_request.registered == false) {
 615                 fprintf(stderr, "Agent not registered\n");
 616                 return -EALREADY;
 617         }
 618
 619         g_dbus_unregister_interface(connection, agent_path(), AGENT_INTERFACE);
 620
 621         result = __connmanctl_dbus_method_call(connection, CONNMAN_SERVICE,
 622                         CONNMAN_PATH, "net.connman.Manager", "UnregisterAgent",
 623                         agent_unregister_return, NULL,
 624                         DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
 625
 626         if (result != -EINPROGRESS)
 627                 fprintf(stderr, "Error: Failed to unregister Agent\n");
 628
 629         return result;
 630 }
 631
 632 static const GDBusMethodTable vpn_agent_methods[] = {
 633         { GDBUS_ASYNC_METHOD("Release", NULL, NULL, agent_release) },
 634         { GDBUS_ASYNC_METHOD("Cancel", NULL, NULL, agent_cancel) },
 635         { GDBUS_ASYNC_METHOD("ReportError",
 636                                 GDBUS_ARGS({ "service", "o" },
 637                                         { "error", "s" }),
 638                                 NULL, agent_report_error) },
 639         { },
 640 };
 641
 642 static int vpn_agent_register_return(DBusMessageIter *iter, const char *error,
 643                 void *user_data)
 644 {
 645         DBusConnection *connection = user_data;
 646
 647         if (error != NULL) {
 648                 g_dbus_unregister_interface(connection, agent_path(),
 649                                 VPN_AGENT_INTERFACE);
 650                 fprintf(stderr, "Error registering VPN Agent: %s\n", error);
 651                 return 0;
 652         }
 653
 654         vpn_agent_request.registered = true;
 655         fprintf(stdout, "VPN Agent registered\n");
 656
 657         return -EINPROGRESS;
 658 }
 659
 660 int __connmanctl_vpn_agent_register(DBusConnection *connection)
 661 {
 662         char *path = agent_path();
 663         int result;
 664
 665         if (vpn_agent_request.registered == true) {
 666                 fprintf(stderr, "VPN Agent already registered\n");
 667                 return -EALREADY;
 668         }
 669
 670         agent_connection = connection;
 671
 672         if (g_dbus_register_interface(connection, path,
 673                                         VPN_AGENT_INTERFACE, vpn_agent_methods,
 674                                         NULL, NULL, &vpn_agent_request,
 675                                         NULL) == FALSE) {
 676                 fprintf(stderr, "Error: Failed to register VPN Agent "
 677                                 "callbacks\n");
 678                 return 0;
 679         }
 680
 681         result = __connmanctl_dbus_method_call(connection, VPN_SERVICE,
 682                         VPN_PATH, "net.connman.vpn.Manager", "RegisterAgent",
 683                         vpn_agent_register_return, connection,
 684                         DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
 685
 686         if (result != -EINPROGRESS) {
 687                 g_dbus_unregister_interface(connection, agent_path(),
 688                                 VPN_AGENT_INTERFACE);
 689
 690                 fprintf(stderr, "Error: Failed to register VPN Agent\n");
 691         }
 692
 693         return result;
 694 }
 695
 696 static int vpn_agent_unregister_return(DBusMessageIter *iter,
 697                 const char *error, void *user_data)
 698 {
 699         if (error != NULL) {
 700                 fprintf(stderr, "Error unregistering VPN Agent: %s\n", error);
 701                 return 0;
 702         }
 703
 704         vpn_agent_request.registered = false;
 705         fprintf(stdout, "VPN Agent unregistered\n");
 706
 707         return 0;
 708 }
 709
 710 int __connmanctl_vpn_agent_unregister(DBusConnection *connection)
 711 {
 712         char *path = agent_path();
 713         int result;
 714
 715         if (vpn_agent_request.registered == false) {
 716                 fprintf(stderr, "VPN Agent not registered\n");
 717                 return -EALREADY;
 718         }
 719
 720         g_dbus_unregister_interface(connection, agent_path(),
 721                         VPN_AGENT_INTERFACE);
 722
 723         result = __connmanctl_dbus_method_call(connection, VPN_SERVICE,
 724                         VPN_PATH, "net.connman.vpn.Manager", "UnregisterAgent",
 725                         vpn_agent_unregister_return, NULL,
 726                         DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
 727
 728         if (result != -EINPROGRESS)
 729                 fprintf(stderr, "Error: Failed to unregister VPN Agent\n");
 730
 731         return result;
 732 }