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                 if (err != -EINPROGRESS)
 146                         return err;
 147
 148                 return -EINPROGRESS;
 149         }
 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 {
 169         int err;
 170
 171         DBG("provider %p", provider);
 172
 173         if (provider->driver && provider->driver->connect)
 174                 err = provider->driver->connect(provider);
 175         else
 176                 return -EOPNOTSUPP;
 177
 178         if (err < 0) {
 179                 if (err != -EINPROGRESS)
 180                         return err;
 181
 182                 provider_indicate_state(provider,
 183                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 184
 185                 return -EINPROGRESS;
 186         }
 187
 188         return 0;
 189 }
 190
 191 int __connman_provider_remove_by_path(const char *path)
 192 {
 193         struct connman_provider *provider;
 194         GHashTableIter iter;
 195         gpointer value, key;
 196
 197         DBG("path %s", path);
 198
 199         g_hash_table_iter_init(&iter, provider_hash);
 200         while (g_hash_table_iter_next(&iter, &key, &value)) {
 201                 const char *srv_path;
 202                 provider = value;
 203
 204                 if (!provider->vpn_service)
 205                         continue;
 206
 207                 srv_path = __connman_service_get_path(provider->vpn_service);
 208
 209                 if (g_strcmp0(srv_path, path) == 0) {
 210                         DBG("Removing VPN %s", provider->identifier);
 211
 212                         provider_remove(provider);
 213
 214                         connman_provider_set_state(provider,
 215                                                 CONNMAN_PROVIDER_STATE_IDLE);
 216
 217                         g_hash_table_remove(provider_hash,
 218                                                 provider->identifier);
 219                         return 0;
 220                 }
 221         }
 222
 223         return -ENXIO;
 224 }
 225
 226 static int set_connected(struct connman_provider *provider,
 227                                         bool connected)
 228 {
 229         struct connman_service *service = provider->vpn_service;
 230         struct connman_ipconfig *ipconfig;
 231
 232         if (!service)
 233                 return -ENODEV;
 234
 235         ipconfig = __connman_service_get_ipconfig(service, provider->family);
 236
 237         if (connected) {
 238                 if (!ipconfig) {
 239                         provider_indicate_state(provider,
 240                                                 CONNMAN_SERVICE_STATE_FAILURE);
 241                         return -EIO;
 242                 }
 243
 244                 __connman_ipconfig_address_add(ipconfig);
 245 #if defined TIZEN_EXT
 246                 __connman_ipconfig_gateway_add(ipconfig, service);
 247 #else
 248                 __connman_ipconfig_gateway_add(ipconfig);
 249 #endif
 250
 251                 provider_indicate_state(provider,
 252                                         CONNMAN_SERVICE_STATE_READY);
 253
 254                 if (provider->driver && provider->driver->set_routes)
 255                         provider->driver->set_routes(provider,
 256                                                 CONNMAN_PROVIDER_ROUTE_ALL);
 257
 258         } else {
 259                 if (ipconfig) {
 260                         provider_indicate_state(provider,
 261                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 262                         __connman_ipconfig_gateway_remove(ipconfig);
 263                 }
 264
 265                 provider_indicate_state(provider,
 266                                         CONNMAN_SERVICE_STATE_IDLE);
 267         }
 268
 269         return 0;
 270 }
 271
 272 int connman_provider_set_state(struct connman_provider *provider,
 273                                         enum connman_provider_state state)
 274 {
 275         if (!provider || !provider->vpn_service)
 276                 return -EINVAL;
 277
 278         switch (state) {
 279         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 280                 return -EINVAL;
 281         case CONNMAN_PROVIDER_STATE_IDLE:
 282                 return set_connected(provider, false);
 283         case CONNMAN_PROVIDER_STATE_CONNECT:
 284                 return provider_indicate_state(provider,
 285                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 286         case CONNMAN_PROVIDER_STATE_READY:
 287                 return set_connected(provider, true);
 288         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 289                 return provider_indicate_state(provider,
 290                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 291         case CONNMAN_PROVIDER_STATE_FAILURE:
 292                 return provider_indicate_state(provider,
 293                                         CONNMAN_SERVICE_STATE_FAILURE);
 294         }
 295
 296         return -EINVAL;
 297 }
 298
 299 int connman_provider_indicate_error(struct connman_provider *provider,
 300                                         enum connman_provider_error error)
 301 {
 302         enum connman_service_error service_error;
 303
 304         switch (error) {
 305         case CONNMAN_PROVIDER_ERROR_LOGIN_FAILED:
 306                 service_error = CONNMAN_SERVICE_ERROR_LOGIN_FAILED;
 307                 break;
 308         case CONNMAN_PROVIDER_ERROR_AUTH_FAILED:
 309                 service_error = CONNMAN_SERVICE_ERROR_AUTH_FAILED;
 310                 break;
 311         case CONNMAN_PROVIDER_ERROR_CONNECT_FAILED:
 312                 service_error = CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
 313                 break;
 314         default:
 315                 service_error = CONNMAN_SERVICE_ERROR_UNKNOWN;
 316                 break;
 317         }
 318
 319         return __connman_service_indicate_error(provider->vpn_service,
 320                                                         service_error);
 321 }
 322
 323 int connman_provider_create_service(struct connman_provider *provider)
 324 {
 325         if (provider->vpn_service) {
 326                 bool connected;
 327
 328                 connected = __connman_service_is_connected_state(
 329                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV4);
 330                 if (connected)
 331                         return -EALREADY;
 332
 333                 connected = __connman_service_is_connected_state(
 334                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV6);
 335                 if (connected)
 336                         return -EALREADY;
 337
 338                 return 0;
 339         }
 340
 341         provider->vpn_service =
 342                 __connman_service_create_from_provider(provider);
 343
 344         if (!provider->vpn_service) {
 345                 connman_warn("service creation failed for provider %s",
 346                         provider->identifier);
 347
 348                 g_hash_table_remove(provider_hash, provider->identifier);
 349                 return -EOPNOTSUPP;
 350         }
 351
 352         return 0;
 353 }
 354
 355 bool __connman_provider_is_immutable(struct connman_provider *provider)
 356
 357 {
 358         if (provider)
 359                 return provider->immutable;
 360
 361         return false;
 362 }
 363
 364 int connman_provider_set_immutable(struct connman_provider *provider,
 365                                                 bool immutable)
 366 {
 367         if (!provider)
 368                 return -EINVAL;
 369
 370         provider->immutable = immutable;
 371
 372         return 0;
 373 }
 374
 375 static struct connman_provider *provider_lookup(const char *identifier)
 376 {
 377         return g_hash_table_lookup(provider_hash, identifier);
 378 }
 379
 380 static void connection_ready(DBusMessage *msg, int error_code, void *user_data)
 381 {
 382         DBusMessage *reply;
 383         const char *identifier = user_data;
 384
 385         DBG("msg %p error %d", msg, error_code);
 386
 387         if (error_code != 0) {
 388                 reply = __connman_error_failed(msg, -error_code);
 389                 if (!g_dbus_send_message(connection, reply))
 390                         DBG("reply %p send failed", reply);
 391         } else {
 392                 const char *path;
 393                 struct connman_provider *provider;
 394
 395                 provider = provider_lookup(identifier);
 396                 if (!provider) {
 397                         reply = __connman_error_failed(msg, EINVAL);
 398                         g_dbus_send_message(connection, reply);
 399                         return;
 400                 }
 401
 402                 path = __connman_service_get_path(provider->vpn_service);
 403
 404                 g_dbus_send_reply(connection, msg,
 405                                 DBUS_TYPE_OBJECT_PATH, &path,
 406                                 DBUS_TYPE_INVALID);
 407         }
 408 }
 409
 410 int __connman_provider_create_and_connect(DBusMessage *msg)
 411 {
 412         struct connman_provider_driver *driver;
 413
 414         if (!driver_list)
 415                 return -EINVAL;
 416
 417         driver = driver_list->data;
 418         if (!driver || !driver->create)
 419                 return -EINVAL;
 420
 421         DBG("msg %p", msg);
 422
 423         return driver->create(msg, connection_ready);
 424 }
 425
 426 const char *__connman_provider_get_ident(struct connman_provider *provider)
 427 {
 428         if (!provider)
 429                 return NULL;
 430
 431         return provider->identifier;
 432 }
 433
 434 int connman_provider_set_string(struct connman_provider *provider,
 435                                         const char *key, const char *value)
 436 {
 437         if (provider->driver && provider->driver->set_property)
 438                 return provider->driver->set_property(provider, key, value);
 439
 440         return 0;
 441 }
 442
 443 const char *connman_provider_get_string(struct connman_provider *provider,
 444                                                         const char *key)
 445 {
 446         if (provider->driver && provider->driver->get_property)
 447                 return provider->driver->get_property(provider, key);
 448
 449         return NULL;
 450 }
 451
 452 bool
 453 __connman_provider_check_routes(struct connman_provider *provider)
 454 {
 455         if (!provider)
 456                 return false;
 457
 458         if (provider->driver && provider->driver->check_routes)
 459                 return provider->driver->check_routes(provider);
 460
 461         return false;
 462 }
 463
 464 void *connman_provider_get_data(struct connman_provider *provider)
 465 {
 466         return provider->driver_data;
 467 }
 468
 469 void connman_provider_set_data(struct connman_provider *provider, void *data)
 470 {
 471         provider->driver_data = data;
 472 }
 473
 474 void connman_provider_set_index(struct connman_provider *provider, int index)
 475 {
 476         struct connman_service *service = provider->vpn_service;
 477         struct connman_ipconfig *ipconfig;
 478
 479         DBG("");
 480
 481         if (!service)
 482                 return;
 483
 484         ipconfig = __connman_service_get_ip4config(service);
 485
 486         if (!ipconfig) {
 487                 connman_service_create_ip4config(service, index);
 488
 489                 ipconfig = __connman_service_get_ip4config(service);
 490                 if (!ipconfig) {
 491                         DBG("Couldnt create ipconfig");
 492                         goto done;
 493                 }
 494         }
 495
 496         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 497         __connman_ipconfig_set_index(ipconfig, index);
 498
 499         ipconfig = __connman_service_get_ip6config(service);
 500
 501         if (!ipconfig) {
 502                 connman_service_create_ip6config(service, index);
 503
 504                 ipconfig = __connman_service_get_ip6config(service);
 505                 if (!ipconfig) {
 506                         DBG("Couldnt create ipconfig for IPv6");
 507                         goto done;
 508                 }
 509         }
 510
 511         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 512         __connman_ipconfig_set_index(ipconfig, index);
 513
 514 done:
 515         provider->index = index;
 516 }
 517
 518 int connman_provider_get_index(struct connman_provider *provider)
 519 {
 520         return provider->index;
 521 }
 522
 523 int connman_provider_set_ipaddress(struct connman_provider *provider,
 524                                         struct connman_ipaddress *ipaddress)
 525 {
 526         struct connman_ipconfig *ipconfig = NULL;
 527
 528         ipconfig = __connman_service_get_ipconfig(provider->vpn_service,
 529                                                         ipaddress->family);
 530         if (!ipconfig)
 531                 return -EINVAL;
 532
 533         provider->family = ipaddress->family;
 534
 535         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 536
 537         __connman_ipconfig_set_local(ipconfig, ipaddress->local);
 538         __connman_ipconfig_set_peer(ipconfig, ipaddress->peer);
 539         __connman_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
 540         __connman_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
 541         __connman_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
 542
 543         return 0;
 544 }
 545
 546 int connman_provider_set_pac(struct connman_provider *provider, const char *pac)
 547 {
 548         DBG("provider %p pac %s", provider, pac);
 549
 550         __connman_service_set_pac(provider->vpn_service, pac);
 551
 552         return 0;
 553 }
 554
 555
 556 int connman_provider_set_domain(struct connman_provider *provider,
 557                                         const char *domain)
 558 {
 559         DBG("provider %p domain %s", provider, domain);
 560
 561         __connman_service_set_domainname(provider->vpn_service, domain);
 562
 563         return 0;
 564 }
 565
 566 int connman_provider_set_nameservers(struct connman_provider *provider,
 567                                         char * const *nameservers)
 568 {
 569         int i;
 570
 571         DBG("provider %p nameservers %p", provider, nameservers);
 572
 573         __connman_service_nameserver_clear(provider->vpn_service);
 574
 575         if (!nameservers)
 576                 return 0;
 577
 578         for (i = 0; nameservers[i]; i++)
 579 #if defined TIZEN_EXT
 580                 __connman_service_nameserver_append(provider->vpn_service,
 581                                                 nameservers[i], false,
 582                                                 CONNMAN_IPCONFIG_TYPE_ALL);
 583 #else
 584                 __connman_service_nameserver_append(provider->vpn_service,
 585                                                 nameservers[i], false);
 586 #endif
 587
 588         return 0;
 589 }
 590
 591 static void unregister_provider(gpointer data)
 592 {
 593         struct connman_provider *provider = data;
 594
 595         DBG("provider %p service %p", provider, provider->vpn_service);
 596
 597         if (provider->vpn_service) {
 598                 connman_service_unref(provider->vpn_service);
 599                 provider->vpn_service = NULL;
 600         }
 601
 602         connman_provider_unref(provider);
 603 }
 604
 605 static gint compare_priority(gconstpointer a, gconstpointer b)
 606 {
 607         return 0;
 608 }
 609
 610 int connman_provider_driver_register(struct connman_provider_driver *driver)
 611 {
 612         DBG("driver %p name %s", driver, driver->name);
 613
 614         driver_list = g_slist_insert_sorted(driver_list, driver,
 615                                                         compare_priority);
 616         return 0;
 617 }
 618
 619 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 620 {
 621         DBG("driver %p name %s", driver, driver->name);
 622
 623         driver_list = g_slist_remove(driver_list, driver);
 624 }
 625
 626 void connman_provider_set_driver(struct connman_provider *provider,
 627                                 struct connman_provider_driver *driver)
 628 {
 629         provider->driver = driver;
 630 }
 631
 632 static void provider_disconnect_all(gpointer key, gpointer value,
 633                                                 gpointer user_data)
 634 {
 635         struct connman_provider *provider = value;
 636
 637         connman_provider_disconnect(provider);
 638 }
 639
 640 static void provider_offline_mode(bool enabled)
 641 {
 642         DBG("enabled %d", enabled);
 643
 644         if (enabled)
 645                 g_hash_table_foreach(provider_hash, provider_disconnect_all,
 646                                                                         NULL);
 647
 648 }
 649
 650 static void provider_initialize(struct connman_provider *provider)
 651 {
 652         DBG("provider %p", provider);
 653
 654         provider->index = 0;
 655         provider->identifier = NULL;
 656 }
 657
 658 static struct connman_provider *provider_new(void)
 659 {
 660         struct connman_provider *provider;
 661
 662         provider = g_try_new0(struct connman_provider, 1);
 663         if (!provider)
 664                 return NULL;
 665
 666         provider->refcount = 1;
 667
 668         DBG("provider %p", provider);
 669         provider_initialize(provider);
 670
 671         return provider;
 672 }
 673
 674 struct connman_provider *connman_provider_get(const char *identifier)
 675 {
 676         struct connman_provider *provider;
 677
 678         provider = g_hash_table_lookup(provider_hash, identifier);
 679         if (provider)
 680                 return provider;
 681
 682         provider = provider_new();
 683         if (!provider)
 684                 return NULL;
 685
 686         DBG("provider %p", provider);
 687
 688         provider->identifier = g_strdup(identifier);
 689
 690         g_hash_table_insert(provider_hash, provider->identifier, provider);
 691
 692         return provider;
 693 }
 694
 695 void connman_provider_put(struct connman_provider *provider)
 696 {
 697         g_hash_table_remove(provider_hash, provider->identifier);
 698 }
 699
 700 static struct connman_provider *provider_get(int index)
 701 {
 702         GHashTableIter iter;
 703         gpointer value, key;
 704
 705         g_hash_table_iter_init(&iter, provider_hash);
 706
 707         while (g_hash_table_iter_next(&iter, &key, &value)) {
 708                 struct connman_provider *provider = value;
 709
 710                 if (provider->index == index)
 711                         return provider;
 712         }
 713
 714         return NULL;
 715 }
 716
 717 static void provider_service_changed(struct connman_service *service,
 718                                 enum connman_service_state state)
 719 {
 720         struct connman_provider *provider;
 721         int vpn_index, service_index;
 722
 723         if (!service)
 724                 return;
 725
 726         switch (state) {
 727         case CONNMAN_SERVICE_STATE_UNKNOWN:
 728         case CONNMAN_SERVICE_STATE_IDLE:
 729         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 730         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 731         case CONNMAN_SERVICE_STATE_READY:
 732         case CONNMAN_SERVICE_STATE_ONLINE:
 733                 return;
 734         case CONNMAN_SERVICE_STATE_DISCONNECT:
 735         case CONNMAN_SERVICE_STATE_FAILURE:
 736                 break;
 737         }
 738
 739         service_index = __connman_service_get_index(service);
 740
 741         vpn_index = __connman_connection_get_vpn_index(service_index);
 742
 743         DBG("service %p %s state %d index %d/%d", service,
 744                 __connman_service_get_ident(service),
 745                 state, service_index, vpn_index);
 746
 747         if (vpn_index < 0)
 748                 return;
 749
 750         provider = provider_get(vpn_index);
 751         if (!provider)
 752                 return;
 753
 754         DBG("disconnect %p index %d", provider, vpn_index);
 755
 756         connman_provider_disconnect(provider);
 757
 758         return;
 759 }
 760
 761 static struct connman_notifier provider_notifier = {
 762         .name                   = "provider",
 763         .offline_mode           = provider_offline_mode,
 764         .service_state_changed  = provider_service_changed,
 765 };
 766
 767 int __connman_provider_init(void)
 768 {
 769         int err;
 770
 771         DBG("");
 772
 773         connection = connman_dbus_get_connection();
 774
 775         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 776                                                 NULL, unregister_provider);
 777
 778         err = connman_notifier_register(&provider_notifier);
 779         if (err < 0) {
 780                 g_hash_table_destroy(provider_hash);
 781                 dbus_connection_unref(connection);
 782         }
 783
 784         return err;
 785 }
 786
 787 void __connman_provider_cleanup(void)
 788 {
 789         DBG("");
 790
 791         connman_notifier_unregister(&provider_notifier);
 792
 793         g_hash_table_destroy(provider_hash);
 794         provider_hash = NULL;
 795
 796         dbus_connection_unref(connection);
 797 }