src/provider.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  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         struct connman_service *vpn_service;
  44         int index;
  45         char *identifier;
  46         int family;
  47         struct connman_provider_driver *driver;
  48         void *driver_data;
  49 };
  50
  51 void __connman_provider_append_properties(struct connman_provider *provider,
  52                                                         DBusMessageIter *iter)
  53 {
  54         const char *host, *domain, *type;
  55
  56         if (provider->driver == NULL || provider->driver->get_property == NULL)
  57                 return;
  58
  59         host = provider->driver->get_property(provider, "Host");
  60         domain = provider->driver->get_property(provider, "Domain");
  61         type = provider->driver->get_property(provider, "Type");
  62
  63         if (host != NULL)
  64                 connman_dbus_dict_append_basic(iter, "Host",
  65                                         DBUS_TYPE_STRING, &host);
  66
  67         if (domain != NULL)
  68                 connman_dbus_dict_append_basic(iter, "Domain",
  69                                         DBUS_TYPE_STRING, &domain);
  70
  71         if (type != NULL)
  72                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
  73                                                  &type);
  74 }
  75
  76 struct connman_provider *
  77 connman_provider_ref_debug(struct connman_provider *provider,
  78                         const char *file, int line, const char *caller)
  79 {
  80         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount + 1,
  81                 file, line, caller);
  82
  83         __sync_fetch_and_add(&provider->refcount, 1);
  84
  85         return provider;
  86 }
  87
  88 static void provider_remove(struct connman_provider *provider)
  89 {
  90         if (provider->driver != NULL) {
  91                 provider->driver->remove(provider);
  92                 provider->driver = NULL;
  93         }
  94 }
  95
  96 static void provider_destruct(struct connman_provider *provider)
  97 {
  98         DBG("provider %p", provider);
  99
 100         g_free(provider->identifier);
 101         g_free(provider);
 102 }
 103
 104 void connman_provider_unref_debug(struct connman_provider *provider,
 105                                 const char *file, int line, const char *caller)
 106 {
 107         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount - 1,
 108                 file, line, caller);
 109
 110         if (__sync_fetch_and_sub(&provider->refcount, 1) != 1)
 111                 return;
 112
 113         provider_destruct(provider);
 114 }
 115
 116 static int provider_indicate_state(struct connman_provider *provider,
 117                                         enum connman_service_state state)
 118 {
 119         DBG("state %d", state);
 120
 121         __connman_service_ipconfig_indicate_state(provider->vpn_service, state,
 122                                         CONNMAN_IPCONFIG_TYPE_IPV4);
 123
 124         return __connman_service_ipconfig_indicate_state(provider->vpn_service,
 125                                         state, CONNMAN_IPCONFIG_TYPE_IPV6);
 126 }
 127
 128 int connman_provider_disconnect(struct connman_provider *provider)
 129 {
 130         int err;
 131
 132         DBG("provider %p", provider);
 133
 134         if (provider->driver != NULL && provider->driver->disconnect != NULL)
 135                 err = provider->driver->disconnect(provider);
 136         else
 137                 return -EOPNOTSUPP;
 138
 139         if (provider->vpn_service != NULL)
 140                 provider_indicate_state(provider,
 141                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 142
 143         if (err < 0) {
 144                 if (err != -EINPROGRESS)
 145                         return err;
 146
 147                 return -EINPROGRESS;
 148         }
 149
 150         return 0;
 151 }
 152
 153 int connman_provider_remove(struct connman_provider *provider)
 154 {
 155         DBG("Removing VPN %s", provider->identifier);
 156
 157         provider_remove(provider);
 158
 159         connman_provider_set_state(provider, CONNMAN_PROVIDER_STATE_IDLE);
 160
 161         g_hash_table_remove(provider_hash, provider->identifier);
 162
 163         return 0;
 164 }
 165
 166 int __connman_provider_connect(struct connman_provider *provider)
 167 {
 168         int err;
 169
 170         DBG("provider %p", provider);
 171
 172         if (provider->driver != NULL && provider->driver->connect != NULL) {
 173                 err = provider->driver->connect(provider);
 174         } else
 175                 return -EOPNOTSUPP;
 176
 177         if (err < 0) {
 178                 if (err != -EINPROGRESS)
 179                         return err;
 180
 181                 provider_indicate_state(provider,
 182                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 183
 184                 return -EINPROGRESS;
 185         }
 186
 187         return 0;
 188 }
 189
 190 int __connman_provider_remove_by_path(const char *path)
 191 {
 192         struct connman_provider *provider;
 193         GHashTableIter iter;
 194         gpointer value, key;
 195
 196         DBG("path %s", path);
 197
 198         g_hash_table_iter_init(&iter, provider_hash);
 199         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 200                 const char *srv_path;
 201                 provider = value;
 202
 203                 if (provider->vpn_service == NULL)
 204                         continue;
 205
 206                 srv_path = __connman_service_get_path(provider->vpn_service);
 207
 208                 if (g_strcmp0(srv_path, path) == 0) {
 209                         DBG("Removing VPN %s", provider->identifier);
 210
 211                         provider_remove(provider);
 212
 213                         connman_provider_set_state(provider,
 214                                                 CONNMAN_PROVIDER_STATE_IDLE);
 215
 216                         g_hash_table_remove(provider_hash,
 217                                                 provider->identifier);
 218                         return 0;
 219                 }
 220         }
 221
 222         return -ENXIO;
 223 }
 224
 225 static int set_connected(struct connman_provider *provider,
 226                                         connman_bool_t connected)
 227 {
 228         struct connman_service *service = provider->vpn_service;
 229         struct connman_ipconfig *ipconfig;
 230
 231         if (service == NULL)
 232                 return -ENODEV;
 233
 234         ipconfig = __connman_service_get_ipconfig(service, provider->family);
 235
 236         if (connected == TRUE) {
 237                 if (ipconfig == NULL) {
 238                         provider_indicate_state(provider,
 239                                                 CONNMAN_SERVICE_STATE_FAILURE);
 240                         return -EIO;
 241                 }
 242
 243                 __connman_ipconfig_address_add(ipconfig);
 244                 __connman_ipconfig_gateway_add(ipconfig);
 245
 246                 provider_indicate_state(provider,
 247                                         CONNMAN_SERVICE_STATE_READY);
 248
 249                 if (provider->driver != NULL && provider->driver->set_routes)
 250                         provider->driver->set_routes(provider,
 251                                                 CONNMAN_PROVIDER_ROUTE_ALL);
 252
 253         } else {
 254                 if (ipconfig != NULL) {
 255                         provider_indicate_state(provider,
 256                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 257                         __connman_ipconfig_gateway_remove(ipconfig);
 258                 }
 259
 260                 provider_indicate_state(provider,
 261                                         CONNMAN_SERVICE_STATE_IDLE);
 262         }
 263
 264         return 0;
 265 }
 266
 267 int connman_provider_set_state(struct connman_provider *provider,
 268                                         enum connman_provider_state state)
 269 {
 270         if (provider == NULL || provider->vpn_service == NULL)
 271                 return -EINVAL;
 272
 273         switch (state) {
 274         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 275                 return -EINVAL;
 276         case CONNMAN_PROVIDER_STATE_IDLE:
 277                 return set_connected(provider, FALSE);
 278         case CONNMAN_PROVIDER_STATE_CONNECT:
 279                 return provider_indicate_state(provider,
 280                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 281         case CONNMAN_PROVIDER_STATE_READY:
 282                 return set_connected(provider, TRUE);
 283         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 284                 return provider_indicate_state(provider,
 285                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 286         case CONNMAN_PROVIDER_STATE_FAILURE:
 287                 return provider_indicate_state(provider,
 288                                         CONNMAN_SERVICE_STATE_FAILURE);
 289         }
 290
 291         return -EINVAL;
 292 }
 293
 294 int connman_provider_indicate_error(struct connman_provider *provider,
 295                                         enum connman_provider_error error)
 296 {
 297         enum connman_service_error service_error;
 298
 299         switch (error) {
 300         case CONNMAN_PROVIDER_ERROR_LOGIN_FAILED:
 301                 service_error = CONNMAN_SERVICE_ERROR_LOGIN_FAILED;
 302                 break;
 303         case CONNMAN_PROVIDER_ERROR_AUTH_FAILED:
 304                 service_error = CONNMAN_SERVICE_ERROR_AUTH_FAILED;
 305                 break;
 306         case CONNMAN_PROVIDER_ERROR_CONNECT_FAILED:
 307                 service_error = CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
 308                 break;
 309         default:
 310                 service_error = CONNMAN_SERVICE_ERROR_UNKNOWN;
 311                 break;
 312         }
 313
 314         return __connman_service_indicate_error(provider->vpn_service,
 315                                                         service_error);
 316 }
 317
 318 int connman_provider_create_service(struct connman_provider *provider)
 319 {
 320         if (provider->vpn_service != NULL) {
 321                 connman_bool_t connected;
 322
 323                 connected = __connman_service_is_connected_state(
 324                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV4);
 325                 if (connected == TRUE)
 326                         return -EALREADY;
 327
 328                 connected = __connman_service_is_connected_state(
 329                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV6);
 330                 if (connected == TRUE)
 331                         return -EALREADY;
 332
 333                 return 0;
 334         }
 335
 336         provider->vpn_service =
 337                 __connman_service_create_from_provider(provider);
 338
 339         if (provider->vpn_service == NULL) {
 340                 connman_warn("service creation failed for provider %s",
 341                         provider->identifier);
 342
 343                 g_hash_table_remove(provider_hash, provider->identifier);
 344                 return -EOPNOTSUPP;
 345         }
 346
 347         return 0;
 348 }
 349
 350 int connman_provider_set_immutable(struct connman_provider *provider,
 351                                                 connman_bool_t immutable)
 352 {
 353         if (provider == NULL)
 354                 return -EINVAL;
 355
 356         if (provider->vpn_service == NULL)
 357                 return -ESRCH;
 358
 359         return __connman_service_set_immutable(provider->vpn_service,
 360                                                 immutable);
 361 }
 362
 363 static struct connman_provider *provider_lookup(const char *identifier)
 364 {
 365         return g_hash_table_lookup(provider_hash, identifier);
 366 }
 367
 368 static void connection_ready(DBusMessage *msg, int error_code, void *user_data)
 369 {
 370         DBusMessage *reply;
 371         const char *identifier = user_data;
 372
 373         DBG("msg %p error %d", msg, error_code);
 374
 375         if (error_code != 0) {
 376                 reply = __connman_error_failed(msg, -error_code);
 377                 if (g_dbus_send_message(connection, reply) == FALSE)
 378                         DBG("reply %p send failed", reply);
 379         } else {
 380                 const char *path;
 381                 struct connman_provider *provider;
 382
 383                 provider = provider_lookup(identifier);
 384                 if (provider == NULL) {
 385                         reply = __connman_error_failed(msg, -EINVAL);
 386                         g_dbus_send_message(connection, reply);
 387                         return;
 388                 }
 389
 390                 path = __connman_service_get_path(provider->vpn_service);
 391
 392                 g_dbus_send_reply(connection, msg,
 393                                 DBUS_TYPE_OBJECT_PATH, &path,
 394                                 DBUS_TYPE_INVALID);
 395         }
 396 }
 397
 398 int __connman_provider_create_and_connect(DBusMessage *msg)
 399 {
 400         struct connman_provider_driver *driver;
 401
 402         if (driver_list == NULL)
 403                 return -EINVAL;
 404
 405         driver = driver_list->data;
 406         if (driver == NULL || driver->create == NULL)
 407                 return -EINVAL;
 408
 409         DBG("msg %p", msg);
 410
 411         return driver->create(msg, connection_ready);
 412 }
 413
 414 const char * __connman_provider_get_ident(struct connman_provider *provider)
 415 {
 416         if (provider == NULL)
 417                 return NULL;
 418
 419         return provider->identifier;
 420 }
 421
 422 int connman_provider_set_string(struct connman_provider *provider,
 423                                         const char *key, const char *value)
 424 {
 425         if (provider->driver != NULL && provider->driver->set_property)
 426                 return provider->driver->set_property(provider, key, value);
 427
 428         return 0;
 429 }
 430
 431 const char *connman_provider_get_string(struct connman_provider *provider,
 432                                                         const char *key)
 433 {
 434         if (provider->driver != NULL && provider->driver->get_property)
 435                 return provider->driver->get_property(provider, key);
 436
 437         return NULL;
 438 }
 439
 440 connman_bool_t
 441 __connman_provider_check_routes(struct connman_provider *provider)
 442 {
 443         if (provider == NULL)
 444                 return FALSE;
 445
 446         if (provider->driver != NULL && provider->driver->check_routes)
 447                 return provider->driver->check_routes(provider);
 448
 449         return FALSE;
 450 }
 451
 452 void *connman_provider_get_data(struct connman_provider *provider)
 453 {
 454         return provider->driver_data;
 455 }
 456
 457 void connman_provider_set_data(struct connman_provider *provider, void *data)
 458 {
 459         provider->driver_data = data;
 460 }
 461
 462 void connman_provider_set_index(struct connman_provider *provider, int index)
 463 {
 464         struct connman_service *service = provider->vpn_service;
 465         struct connman_ipconfig *ipconfig;
 466
 467         DBG("");
 468
 469         if (service == NULL)
 470                 return;
 471
 472         ipconfig = __connman_service_get_ip4config(service);
 473
 474         if (ipconfig == NULL) {
 475                 connman_service_create_ip4config(service, index);
 476
 477                 ipconfig = __connman_service_get_ip4config(service);
 478                 if (ipconfig == NULL) {
 479                         DBG("Couldnt create ipconfig");
 480                         goto done;
 481                 }
 482         }
 483
 484         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 485         __connman_ipconfig_set_index(ipconfig, index);
 486
 487         ipconfig = __connman_service_get_ip6config(service);
 488
 489         if (ipconfig == NULL) {
 490                 connman_service_create_ip6config(service, index);
 491
 492                 ipconfig = __connman_service_get_ip6config(service);
 493                 if (ipconfig == NULL) {
 494                         DBG("Couldnt create ipconfig for IPv6");
 495                         goto done;
 496                 }
 497         }
 498
 499         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 500         __connman_ipconfig_set_index(ipconfig, index);
 501
 502 done:
 503         provider->index = index;
 504 }
 505
 506 int connman_provider_get_index(struct connman_provider *provider)
 507 {
 508         return provider->index;
 509 }
 510
 511 int connman_provider_set_ipaddress(struct connman_provider *provider,
 512                                         struct connman_ipaddress *ipaddress)
 513 {
 514         struct connman_ipconfig *ipconfig = NULL;
 515
 516         ipconfig = __connman_service_get_ipconfig(provider->vpn_service,
 517                                                         ipaddress->family);
 518         if (ipconfig == NULL)
 519                 return -EINVAL;
 520
 521         provider->family = ipaddress->family;
 522
 523         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 524
 525         __connman_ipconfig_set_local(ipconfig, ipaddress->local);
 526         __connman_ipconfig_set_peer(ipconfig, ipaddress->peer);
 527         __connman_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
 528         __connman_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
 529         __connman_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
 530
 531         return 0;
 532 }
 533
 534 int connman_provider_set_pac(struct connman_provider *provider, const char *pac)
 535 {
 536         DBG("provider %p pac %s", provider, pac);
 537
 538         __connman_service_set_pac(provider->vpn_service, pac);
 539
 540         return 0;
 541 }
 542
 543
 544 int connman_provider_set_domain(struct connman_provider *provider,
 545                                         const char *domain)
 546 {
 547         DBG("provider %p domain %s", provider, domain);
 548
 549         __connman_service_set_domainname(provider->vpn_service, domain);
 550
 551         return 0;
 552 }
 553
 554 int connman_provider_set_nameservers(struct connman_provider *provider,
 555                                         char * const * nameservers)
 556 {
 557         int i;
 558
 559         DBG("provider %p nameservers %p", provider, nameservers);
 560
 561         __connman_service_nameserver_clear(provider->vpn_service);
 562
 563         if (nameservers == NULL)
 564                 return 0;
 565
 566         for (i = 0; nameservers[i] != NULL; i++)
 567                 __connman_service_nameserver_append(provider->vpn_service,
 568                                                 nameservers[i], FALSE);
 569
 570         return 0;
 571 }
 572
 573 static void unregister_provider(gpointer data)
 574 {
 575         struct connman_provider *provider = data;
 576
 577         DBG("provider %p service %p", provider, provider->vpn_service);
 578
 579         if (provider->vpn_service != NULL) {
 580                 connman_service_unref(provider->vpn_service);
 581                 provider->vpn_service = NULL;
 582         }
 583
 584         connman_provider_unref(provider);
 585 }
 586
 587 static gint compare_priority(gconstpointer a, gconstpointer b)
 588 {
 589         return 0;
 590 }
 591
 592 int connman_provider_driver_register(struct connman_provider_driver *driver)
 593 {
 594         DBG("driver %p name %s", driver, driver->name);
 595
 596         driver_list = g_slist_insert_sorted(driver_list, driver,
 597                                                         compare_priority);
 598         return 0;
 599 }
 600
 601 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 602 {
 603         DBG("driver %p name %s", driver, driver->name);
 604
 605         driver_list = g_slist_remove(driver_list, driver);
 606 }
 607
 608 void connman_provider_set_driver(struct connman_provider *provider,
 609                                 struct connman_provider_driver *driver)
 610 {
 611         provider->driver = driver;
 612 }
 613
 614 static void provider_disconnect_all(gpointer key, gpointer value,
 615                                                 gpointer user_data)
 616 {
 617         struct connman_provider *provider = value;
 618
 619         connman_provider_disconnect(provider);
 620 }
 621
 622 static void provider_offline_mode(connman_bool_t enabled)
 623 {
 624         DBG("enabled %d", enabled);
 625
 626         if (enabled == TRUE)
 627                 g_hash_table_foreach(provider_hash, provider_disconnect_all,
 628                                                                         NULL);
 629
 630 }
 631
 632 static void provider_initialize(struct connman_provider *provider)
 633 {
 634         DBG("provider %p", provider);
 635
 636         provider->index = 0;
 637         provider->identifier = NULL;
 638 }
 639
 640 static struct connman_provider *provider_new(void)
 641 {
 642         struct connman_provider *provider;
 643
 644         provider = g_try_new0(struct connman_provider, 1);
 645         if (provider == NULL)
 646                 return NULL;
 647
 648         provider->refcount = 1;
 649
 650         DBG("provider %p", provider);
 651         provider_initialize(provider);
 652
 653         return provider;
 654 }
 655
 656 struct connman_provider *connman_provider_get(const char *identifier)
 657 {
 658         struct connman_provider *provider;
 659
 660         provider = g_hash_table_lookup(provider_hash, identifier);
 661         if (provider != NULL)
 662                 return provider;
 663
 664         provider = provider_new();
 665         if (provider == NULL)
 666                 return NULL;
 667
 668         DBG("provider %p", provider);
 669
 670         provider->identifier = g_strdup(identifier);
 671
 672         g_hash_table_insert(provider_hash, provider->identifier, provider);
 673
 674         return provider;
 675 }
 676
 677 void connman_provider_put(struct connman_provider *provider)
 678 {
 679         g_hash_table_remove(provider_hash, provider->identifier);
 680 }
 681
 682 static struct connman_provider *provider_get(int index)
 683 {
 684         GHashTableIter iter;
 685         gpointer value, key;
 686
 687         g_hash_table_iter_init(&iter, provider_hash);
 688
 689         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 690                 struct connman_provider *provider = value;
 691
 692                 if (provider->index == index)
 693                         return provider;
 694         }
 695
 696         return NULL;
 697 }
 698
 699 static void provider_service_changed(struct connman_service *service,
 700                                 enum connman_service_state state)
 701 {
 702         struct connman_provider *provider;
 703         int vpn_index, service_index;
 704
 705         if (service == NULL)
 706                 return;
 707
 708         switch (state) {
 709         case CONNMAN_SERVICE_STATE_UNKNOWN:
 710         case CONNMAN_SERVICE_STATE_IDLE:
 711         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 712         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 713         case CONNMAN_SERVICE_STATE_READY:
 714         case CONNMAN_SERVICE_STATE_ONLINE:
 715                 return;
 716         case CONNMAN_SERVICE_STATE_DISCONNECT:
 717         case CONNMAN_SERVICE_STATE_FAILURE:
 718                 break;
 719         }
 720
 721         service_index = __connman_service_get_index(service);
 722
 723         vpn_index = __connman_connection_get_vpn_index(service_index);
 724
 725         DBG("service %p %s state %d index %d/%d", service,
 726                 __connman_service_get_ident(service),
 727                 state, service_index, vpn_index);
 728
 729         if (vpn_index < 0)
 730                 return;
 731
 732         provider = provider_get(vpn_index);
 733         if (provider == NULL)
 734                 return;
 735
 736         DBG("disconnect %p index %d", provider, vpn_index);
 737
 738         connman_provider_disconnect(provider);
 739
 740         return;
 741 }
 742
 743 static struct connman_notifier provider_notifier = {
 744         .name                   = "provider",
 745         .offline_mode           = provider_offline_mode,
 746         .service_state_changed  = provider_service_changed,
 747 };
 748
 749 int __connman_provider_init(void)
 750 {
 751         int err;
 752
 753         DBG("");
 754
 755         connection = connman_dbus_get_connection();
 756
 757         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 758                                                 NULL, unregister_provider);
 759
 760         err = connman_notifier_register(&provider_notifier);
 761         if (err < 0) {
 762                 g_hash_table_destroy(provider_hash);
 763                 dbus_connection_unref(connection);
 764         }
 765
 766         return err;
 767 }
 768
 769 void __connman_provider_cleanup(void)
 770 {
 771         DBG("");
 772
 773         connman_notifier_unregister(&provider_notifier);
 774
 775         g_hash_table_destroy(provider_hash);
 776         provider_hash = NULL;
 777
 778         dbus_connection_unref(connection);
 779 }