src/provider.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2013  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 version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <gdbus.h>
  31 #include <gweb/gresolv.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection = NULL;
  36
  37 static GHashTable *provider_hash = NULL;
  38
  39 static GSList *driver_list = NULL;
  40
  41 struct connman_provider {
  42         int refcount;
  43         bool immutable;
  44         struct connman_service *vpn_service;
  45         int index;
  46         char *identifier;
  47         int family;
  48         struct connman_provider_driver *driver;
  49         void *driver_data;
  50 };
  51
  52 void __connman_provider_append_properties(struct connman_provider *provider,
  53                                                         DBusMessageIter *iter)
  54 {
  55         const char *host, *domain, *type;
  56
  57         if (!provider->driver || !provider->driver->get_property)
  58                 return;
  59
  60         host = provider->driver->get_property(provider, "Host");
  61         domain = provider->driver->get_property(provider, "Domain");
  62         type = provider->driver->get_property(provider, "Type");
  63
  64         if (host)
  65                 connman_dbus_dict_append_basic(iter, "Host",
  66                                         DBUS_TYPE_STRING, &host);
  67
  68         if (domain)
  69                 connman_dbus_dict_append_basic(iter, "Domain",
  70                                         DBUS_TYPE_STRING, &domain);
  71
  72         if (type)
  73                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
  74                                                  &type);
  75 }
  76
  77 struct connman_provider *
  78 connman_provider_ref_debug(struct connman_provider *provider,
  79                         const char *file, int line, const char *caller)
  80 {
  81         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount + 1,
  82                 file, line, caller);
  83
  84         __sync_fetch_and_add(&provider->refcount, 1);
  85
  86         return provider;
  87 }
  88
  89 static void provider_remove(struct connman_provider *provider)
  90 {
  91         if (provider->driver) {
  92                 provider->driver->remove(provider);
  93                 provider->driver = NULL;
  94         }
  95 }
  96
  97 static void provider_destruct(struct connman_provider *provider)
  98 {
  99         DBG("provider %p", provider);
 100
 101         g_free(provider->identifier);
 102         g_free(provider);
 103 }
 104
 105 void connman_provider_unref_debug(struct connman_provider *provider,
 106                                 const char *file, int line, const char *caller)
 107 {
 108         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount - 1,
 109                 file, line, caller);
 110
 111         if (__sync_fetch_and_sub(&provider->refcount, 1) != 1)
 112                 return;
 113
 114         provider_destruct(provider);
 115 }
 116
 117 static int provider_indicate_state(struct connman_provider *provider,
 118                                         enum connman_service_state state)
 119 {
 120         DBG("state %d", state);
 121
 122         __connman_service_ipconfig_indicate_state(provider->vpn_service, state,
 123                                         CONNMAN_IPCONFIG_TYPE_IPV4);
 124
 125         return __connman_service_ipconfig_indicate_state(provider->vpn_service,
 126                                         state, CONNMAN_IPCONFIG_TYPE_IPV6);
 127 }
 128
 129 int connman_provider_disconnect(struct connman_provider *provider)
 130 {
 131         int err;
 132
 133         DBG("provider %p", provider);
 134
 135         if (provider->driver && provider->driver->disconnect)
 136                 err = provider->driver->disconnect(provider);
 137         else
 138                 return -EOPNOTSUPP;
 139
 140         if (provider->vpn_service)
 141                 provider_indicate_state(provider,
 142                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 143
 144         if (err < 0)
 145                 return err;
 146
 147         if (provider->vpn_service)
 148                 provider_indicate_state(provider,
 149                                         CONNMAN_SERVICE_STATE_IDLE);
 150
 151         return 0;
 152 }
 153
 154 int connman_provider_remove(struct connman_provider *provider)
 155 {
 156         DBG("Removing VPN %s", provider->identifier);
 157
 158         provider_remove(provider);
 159
 160         connman_provider_set_state(provider, CONNMAN_PROVIDER_STATE_IDLE);
 161
 162         g_hash_table_remove(provider_hash, provider->identifier);
 163
 164         return 0;
 165 }
 166
 167 int __connman_provider_connect(struct connman_provider *provider,
 168                                         const char *dbus_sender)
 169 {
 170         int err;
 171
 172         DBG("provider %p", provider);
 173
 174         if (provider->driver && provider->driver->connect)
 175                 err = provider->driver->connect(provider, dbus_sender);
 176         else
 177                 return -EOPNOTSUPP;
 178
 179         switch (err) {
 180         case 0:
 181                 return 0;
 182
 183         case -EINPROGRESS:
 184                 provider_indicate_state(provider,
 185                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 186                 /* fall through */
 187         /*
 188          * Return EINPROGRESS also for when there is an existing pending call.
 189          * The state should not be indicated again but the real state is
 190          * still in progress for the provider.
 191          */
 192         case -EALREADY:
 193                 return -EINPROGRESS;
 194         }
 195
 196         return err;
 197 }
 198
 199 int __connman_provider_remove_by_path(const char *path)
 200 {
 201         struct connman_provider *provider;
 202         GHashTableIter iter;
 203         gpointer value, key;
 204
 205         DBG("path %s", path);
 206
 207         g_hash_table_iter_init(&iter, provider_hash);
 208         while (g_hash_table_iter_next(&iter, &key, &value)) {
 209                 const char *srv_path;
 210                 provider = value;
 211
 212                 if (!provider->vpn_service)
 213                         continue;
 214
 215                 srv_path = __connman_service_get_path(provider->vpn_service);
 216
 217                 if (g_strcmp0(srv_path, path) == 0) {
 218                         DBG("Removing VPN %s", provider->identifier);
 219
 220                         provider_remove(provider);
 221
 222                         connman_provider_set_state(provider,
 223                                                 CONNMAN_PROVIDER_STATE_IDLE);
 224
 225                         g_hash_table_remove(provider_hash,
 226                                                 provider->identifier);
 227                         return 0;
 228                 }
 229         }
 230
 231         return -ENXIO;
 232 }
 233
 234 static int set_connected(struct connman_provider *provider,
 235                                         bool connected)
 236 {
 237         struct connman_service *service = provider->vpn_service;
 238         struct connman_ipconfig *ipconfig;
 239
 240         if (!service)
 241                 return -ENODEV;
 242
 243         ipconfig = __connman_service_get_ipconfig(service, provider->family);
 244
 245         if (connected) {
 246                 if (!ipconfig) {
 247                         provider_indicate_state(provider,
 248                                                 CONNMAN_SERVICE_STATE_FAILURE);
 249                         return -EIO;
 250                 }
 251
 252                 __connman_ipconfig_address_add(ipconfig);
 253                 __connman_ipconfig_gateway_add(ipconfig);
 254
 255                 provider_indicate_state(provider,
 256                                         CONNMAN_SERVICE_STATE_READY);
 257
 258                 if (provider->driver && provider->driver->set_routes)
 259                         provider->driver->set_routes(provider,
 260                                                 CONNMAN_PROVIDER_ROUTE_ALL);
 261
 262         } else {
 263                 if (ipconfig) {
 264                         provider_indicate_state(provider,
 265                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 266                         __connman_ipconfig_gateway_remove(ipconfig);
 267                 }
 268
 269                 provider_indicate_state(provider,
 270                                         CONNMAN_SERVICE_STATE_IDLE);
 271         }
 272
 273         return 0;
 274 }
 275
 276 int connman_provider_set_state(struct connman_provider *provider,
 277                                         enum connman_provider_state state)
 278 {
 279         if (!provider || !provider->vpn_service)
 280                 return -EINVAL;
 281
 282         switch (state) {
 283         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 284                 return -EINVAL;
 285         case CONNMAN_PROVIDER_STATE_IDLE:
 286                 return set_connected(provider, false);
 287         case CONNMAN_PROVIDER_STATE_CONNECT:
 288                 return provider_indicate_state(provider,
 289                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 290         case CONNMAN_PROVIDER_STATE_READY:
 291                 return set_connected(provider, true);
 292         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 293                 return provider_indicate_state(provider,
 294                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 295         case CONNMAN_PROVIDER_STATE_FAILURE:
 296                 return provider_indicate_state(provider,
 297                                         CONNMAN_SERVICE_STATE_FAILURE);
 298         }
 299
 300         return -EINVAL;
 301 }
 302
 303 int connman_provider_indicate_error(struct connman_provider *provider,
 304                                         enum connman_provider_error error)
 305 {
 306         enum connman_service_error service_error;
 307
 308         switch (error) {
 309         case CONNMAN_PROVIDER_ERROR_LOGIN_FAILED:
 310                 service_error = CONNMAN_SERVICE_ERROR_LOGIN_FAILED;
 311                 break;
 312         case CONNMAN_PROVIDER_ERROR_AUTH_FAILED:
 313                 service_error = CONNMAN_SERVICE_ERROR_AUTH_FAILED;
 314                 break;
 315         case CONNMAN_PROVIDER_ERROR_CONNECT_FAILED:
 316                 service_error = CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
 317                 break;
 318         default:
 319                 service_error = CONNMAN_SERVICE_ERROR_UNKNOWN;
 320                 break;
 321         }
 322
 323         return __connman_service_indicate_error(provider->vpn_service,
 324                                                         service_error);
 325 }
 326
 327 int connman_provider_create_service(struct connman_provider *provider)
 328 {
 329         if (provider->vpn_service) {
 330                 bool connected;
 331
 332                 connected = __connman_service_is_connected_state(
 333                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV4);
 334                 if (connected)
 335                         return -EALREADY;
 336
 337                 connected = __connman_service_is_connected_state(
 338                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV6);
 339                 if (connected)
 340                         return -EALREADY;
 341
 342                 return 0;
 343         }
 344
 345         provider->vpn_service =
 346                 __connman_service_create_from_provider(provider);
 347
 348         if (!provider->vpn_service) {
 349                 connman_warn("service creation failed for provider %s",
 350                         provider->identifier);
 351
 352                 g_hash_table_remove(provider_hash, provider->identifier);
 353                 return -EOPNOTSUPP;
 354         }
 355
 356         return 0;
 357 }
 358
 359 bool __connman_provider_is_immutable(struct connman_provider *provider)
 360
 361 {
 362         if (provider)
 363                 return provider->immutable;
 364
 365         return false;
 366 }
 367
 368 int connman_provider_set_immutable(struct connman_provider *provider,
 369                                                 bool immutable)
 370 {
 371         if (!provider)
 372                 return -EINVAL;
 373
 374         provider->immutable = immutable;
 375
 376         return 0;
 377 }
 378
 379 static struct connman_provider *provider_lookup(const char *identifier)
 380 {
 381         return g_hash_table_lookup(provider_hash, identifier);
 382 }
 383
 384 static void connection_ready(DBusMessage *msg, int error_code, void *user_data)
 385 {
 386         DBusMessage *reply;
 387         const char *identifier = user_data;
 388
 389         DBG("msg %p error %d", msg, error_code);
 390
 391         if (error_code != 0) {
 392                 reply = __connman_error_failed(msg, -error_code);
 393                 if (!g_dbus_send_message(connection, reply))
 394                         DBG("reply %p send failed", reply);
 395         } else {
 396                 const char *path;
 397                 struct connman_provider *provider;
 398
 399                 provider = provider_lookup(identifier);
 400                 if (!provider) {
 401                         reply = __connman_error_failed(msg, EINVAL);
 402                         g_dbus_send_message(connection, reply);
 403                         return;
 404                 }
 405
 406                 path = __connman_service_get_path(provider->vpn_service);
 407
 408                 g_dbus_send_reply(connection, msg,
 409                                 DBUS_TYPE_OBJECT_PATH, &path,
 410                                 DBUS_TYPE_INVALID);
 411         }
 412 }
 413
 414 int __connman_provider_create_and_connect(DBusMessage *msg)
 415 {
 416         struct connman_provider_driver *driver;
 417
 418         if (!driver_list)
 419                 return -EINVAL;
 420
 421         driver = driver_list->data;
 422         if (!driver || !driver->create)
 423                 return -EINVAL;
 424
 425         DBG("msg %p", msg);
 426
 427         return driver->create(msg, connection_ready);
 428 }
 429
 430 const char *__connman_provider_get_ident(struct connman_provider *provider)
 431 {
 432         if (!provider)
 433                 return NULL;
 434
 435         return provider->identifier;
 436 }
 437
 438 int connman_provider_set_string(struct connman_provider *provider,
 439                                         const char *key, const char *value)
 440 {
 441         if (provider->driver && provider->driver->set_property)
 442                 return provider->driver->set_property(provider, key, value);
 443
 444         return 0;
 445 }
 446
 447 const char *connman_provider_get_string(struct connman_provider *provider,
 448                                                         const char *key)
 449 {
 450         if (provider->driver && provider->driver->get_property)
 451                 return provider->driver->get_property(provider, key);
 452
 453         return NULL;
 454 }
 455
 456 bool
 457 __connman_provider_check_routes(struct connman_provider *provider)
 458 {
 459         if (!provider)
 460                 return false;
 461
 462         if (provider->driver && provider->driver->check_routes)
 463                 return provider->driver->check_routes(provider);
 464
 465         return false;
 466 }
 467
 468 void *connman_provider_get_data(struct connman_provider *provider)
 469 {
 470         return provider->driver_data;
 471 }
 472
 473 void connman_provider_set_data(struct connman_provider *provider, void *data)
 474 {
 475         provider->driver_data = data;
 476 }
 477
 478 void connman_provider_set_index(struct connman_provider *provider, int index)
 479 {
 480         struct connman_service *service = provider->vpn_service;
 481         struct connman_ipconfig *ipconfig;
 482
 483         DBG("");
 484
 485         if (!service)
 486                 return;
 487
 488         ipconfig = __connman_service_get_ip4config(service);
 489
 490         if (!ipconfig) {
 491                 connman_service_create_ip4config(service, index);
 492
 493                 ipconfig = __connman_service_get_ip4config(service);
 494                 if (!ipconfig) {
 495                         DBG("Couldn't create ipconfig");
 496                         goto done;
 497                 }
 498         }
 499
 500         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 501         __connman_ipconfig_set_index(ipconfig, index);
 502
 503         ipconfig = __connman_service_get_ip6config(service);
 504
 505         if (!ipconfig) {
 506                 connman_service_create_ip6config(service, index);
 507
 508                 ipconfig = __connman_service_get_ip6config(service);
 509                 if (!ipconfig) {
 510                         DBG("Couldn't create ipconfig for IPv6");
 511                         goto done;
 512                 }
 513         }
 514
 515         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 516         __connman_ipconfig_set_index(ipconfig, index);
 517
 518 done:
 519         provider->index = index;
 520 }
 521
 522 int connman_provider_get_index(struct connman_provider *provider)
 523 {
 524         return provider->index;
 525 }
 526
 527 int connman_provider_set_ipaddress(struct connman_provider *provider,
 528                                         struct connman_ipaddress *ipaddress)
 529 {
 530         struct connman_ipconfig *ipconfig = NULL;
 531
 532         ipconfig = __connman_service_get_ipconfig(provider->vpn_service,
 533                                                         ipaddress->family);
 534         if (!ipconfig)
 535                 return -EINVAL;
 536
 537         provider->family = ipaddress->family;
 538
 539         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 540
 541         __connman_ipconfig_set_local(ipconfig, ipaddress->local);
 542         __connman_ipconfig_set_peer(ipconfig, ipaddress->peer);
 543         __connman_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
 544         __connman_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
 545         __connman_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
 546
 547         return 0;
 548 }
 549
 550 int connman_provider_set_pac(struct connman_provider *provider, const char *pac)
 551 {
 552         DBG("provider %p pac %s", provider, pac);
 553
 554         __connman_service_set_pac(provider->vpn_service, pac);
 555
 556         return 0;
 557 }
 558
 559
 560 int connman_provider_set_domain(struct connman_provider *provider,
 561                                         const char *domain)
 562 {
 563         DBG("provider %p domain %s", provider, domain);
 564
 565         __connman_service_set_domainname(provider->vpn_service, domain);
 566
 567         return 0;
 568 }
 569
 570 int connman_provider_set_nameservers(struct connman_provider *provider,
 571                                         char * const *nameservers)
 572 {
 573         int i;
 574
 575         DBG("provider %p nameservers %p", provider, nameservers);
 576
 577         __connman_service_nameserver_clear(provider->vpn_service);
 578
 579         if (!nameservers)
 580                 return 0;
 581
 582         for (i = 0; nameservers[i]; i++)
 583                 __connman_service_nameserver_append(provider->vpn_service,
 584                                                 nameservers[i], false);
 585
 586         return 0;
 587 }
 588
 589 void connman_provider_set_autoconnect(struct connman_provider *provider,
 590                                                                 bool flag)
 591 {
 592         if (!provider || !provider->vpn_service)
 593                 return;
 594
 595         /* Save VPN service if autoconnect value changes */
 596         if (connman_service_set_autoconnect(provider->vpn_service, flag))
 597                 __connman_service_save(provider->vpn_service);
 598 }
 599
 600 static void unregister_provider(gpointer data)
 601 {
 602         struct connman_provider *provider = data;
 603
 604         DBG("provider %p service %p", provider, provider->vpn_service);
 605
 606         if (provider->vpn_service) {
 607                 connman_service_unref(provider->vpn_service);
 608                 provider->vpn_service = NULL;
 609         }
 610
 611         connman_provider_unref(provider);
 612 }
 613
 614 static gint compare_priority(gconstpointer a, gconstpointer b)
 615 {
 616         return 0;
 617 }
 618
 619 int connman_provider_driver_register(struct connman_provider_driver *driver)
 620 {
 621         DBG("driver %p name %s", driver, driver->name);
 622
 623         driver_list = g_slist_insert_sorted(driver_list, driver,
 624                                                         compare_priority);
 625         return 0;
 626 }
 627
 628 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 629 {
 630         DBG("driver %p name %s", driver, driver->name);
 631
 632         driver_list = g_slist_remove(driver_list, driver);
 633 }
 634
 635 void connman_provider_set_driver(struct connman_provider *provider,
 636                                 struct connman_provider_driver *driver)
 637 {
 638         provider->driver = driver;
 639 }
 640
 641 static void provider_disconnect_all(gpointer key, gpointer value,
 642                                                 gpointer user_data)
 643 {
 644         struct connman_provider *provider = value;
 645
 646         connman_provider_disconnect(provider);
 647 }
 648
 649 static void provider_offline_mode(bool enabled)
 650 {
 651         DBG("enabled %d", enabled);
 652
 653         if (enabled)
 654                 g_hash_table_foreach(provider_hash, provider_disconnect_all,
 655                                                                         NULL);
 656
 657 }
 658
 659 static void provider_initialize(struct connman_provider *provider)
 660 {
 661         DBG("provider %p", provider);
 662
 663         provider->index = 0;
 664         provider->identifier = NULL;
 665 }
 666
 667 static struct connman_provider *provider_new(void)
 668 {
 669         struct connman_provider *provider;
 670
 671         provider = g_try_new0(struct connman_provider, 1);
 672         if (!provider)
 673                 return NULL;
 674
 675         provider->refcount = 1;
 676
 677         DBG("provider %p", provider);
 678         provider_initialize(provider);
 679
 680         return provider;
 681 }
 682
 683 struct connman_provider *connman_provider_get(const char *identifier)
 684 {
 685         struct connman_provider *provider;
 686
 687         provider = g_hash_table_lookup(provider_hash, identifier);
 688         if (provider)
 689                 return provider;
 690
 691         provider = provider_new();
 692         if (!provider)
 693                 return NULL;
 694
 695         DBG("provider %p", provider);
 696
 697         provider->identifier = g_strdup(identifier);
 698
 699         g_hash_table_insert(provider_hash, provider->identifier, provider);
 700
 701         return provider;
 702 }
 703
 704 void connman_provider_put(struct connman_provider *provider)
 705 {
 706         g_hash_table_remove(provider_hash, provider->identifier);
 707 }
 708
 709 static struct connman_provider *provider_get(int index)
 710 {
 711         GHashTableIter iter;
 712         gpointer value, key;
 713
 714         g_hash_table_iter_init(&iter, provider_hash);
 715
 716         while (g_hash_table_iter_next(&iter, &key, &value)) {
 717                 struct connman_provider *provider = value;
 718
 719                 if (provider->index == index)
 720                         return provider;
 721         }
 722
 723         return NULL;
 724 }
 725
 726 static void provider_service_changed(struct connman_service *service,
 727                                 enum connman_service_state state)
 728 {
 729         struct connman_provider *provider;
 730         int vpn_index, service_index;
 731
 732         if (!service)
 733                 return;
 734
 735         switch (state) {
 736         case CONNMAN_SERVICE_STATE_UNKNOWN:
 737         case CONNMAN_SERVICE_STATE_IDLE:
 738         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 739         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 740         case CONNMAN_SERVICE_STATE_READY:
 741         case CONNMAN_SERVICE_STATE_ONLINE:
 742                 return;
 743         case CONNMAN_SERVICE_STATE_DISCONNECT:
 744         case CONNMAN_SERVICE_STATE_FAILURE:
 745                 break;
 746         }
 747
 748         service_index = __connman_service_get_index(service);
 749
 750         vpn_index = __connman_connection_get_vpn_index(service_index);
 751
 752         DBG("service %p %s state %d index %d/%d", service,
 753                 connman_service_get_identifier(service),
 754                 state, service_index, vpn_index);
 755
 756         if (vpn_index < 0)
 757                 return;
 758
 759         provider = provider_get(vpn_index);
 760         if (!provider)
 761                 return;
 762
 763         DBG("disconnect %p index %d", provider, vpn_index);
 764
 765         connman_provider_disconnect(provider);
 766 }
 767
 768 static const struct connman_notifier provider_notifier = {
 769         .name                   = "provider",
 770         .offline_mode           = provider_offline_mode,
 771         .service_state_changed  = provider_service_changed,
 772 };
 773
 774 int __connman_provider_init(void)
 775 {
 776         int err;
 777
 778         DBG("");
 779
 780         connection = connman_dbus_get_connection();
 781
 782         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 783                                                 NULL, unregister_provider);
 784
 785         err = connman_notifier_register(&provider_notifier);
 786         if (err < 0) {
 787                 g_hash_table_destroy(provider_hash);
 788                 dbus_connection_unref(connection);
 789         }
 790
 791         return err;
 792 }
 793
 794 void __connman_provider_cleanup(void)
 795 {
 796         DBG("");
 797
 798         connman_notifier_unregister(&provider_notifier);
 799
 800         g_hash_table_destroy(provider_hash);
 801         provider_hash = NULL;
 802
 803         dbus_connection_unref(connection);
 804 }