src/provider.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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 <stdio.h>
  27 #include <string.h>
  28 #include <gdbus.h>
  29
  30 #include "connman.h"
  31
  32 static DBusConnection *connection = NULL;
  33
  34 static GHashTable *provider_hash = NULL;
  35
  36 static GSList *driver_list = NULL;
  37
  38 struct connman_provider {
  39         struct connman_element element;
  40         struct connman_service *vpn_service;
  41         char *identifier;
  42         char *name;
  43         char *type;
  44         char *host;
  45         char *dns;
  46         char *domain;
  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         if (provider->host != NULL)
  55                 connman_dbus_dict_append_basic(iter, "Host",
  56                                         DBUS_TYPE_STRING, &provider->host);
  57
  58         if (provider->domain != NULL)
  59                 connman_dbus_dict_append_basic(iter, "Domain",
  60                                         DBUS_TYPE_STRING, &provider->domain);
  61
  62         if (provider->type != NULL)
  63                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
  64                                                  &provider->type);
  65 }
  66
  67 static struct connman_provider *connman_provider_lookup(const char *identifier)
  68 {
  69         struct connman_provider *provider = NULL;
  70
  71         provider = g_hash_table_lookup(provider_hash, identifier);
  72
  73         return provider;
  74 }
  75
  76 static int connman_provider_setup_vpn_ipv4(struct connman_provider *provider,
  77                                                 struct connman_element *element)
  78 {
  79         if (element == NULL || provider == NULL)
  80                 return -EINVAL;
  81
  82         DBG("set vpn type %d", element->type);
  83
  84         g_free(element->ipv4.address);
  85         element->ipv4.address = g_strdup(provider->element.ipv4.address);
  86
  87         g_free(element->ipv4.netmask);
  88         element->ipv4.netmask = g_strdup(provider->element.ipv4.netmask);
  89
  90         g_free(element->ipv4.gateway);
  91         element->ipv4.gateway = g_strdup(provider->element.ipv4.gateway);
  92
  93         g_free(element->ipv4.broadcast);
  94         element->ipv4.broadcast = g_strdup(provider->element.ipv4.broadcast);
  95
  96         g_free(element->ipv4.pac);
  97         element->ipv4.pac = g_strdup(provider->element.ipv4.pac);
  98
  99         return connman_element_register(element, &provider->element);
 100 }
 101
 102 struct connman_provider *connman_provider_ref(struct connman_provider *provider)
 103 {
 104         DBG("provider %p", provider);
 105
 106         if (connman_element_ref(&provider->element) == NULL)
 107                 return NULL;
 108
 109         return provider;
 110 }
 111
 112 void connman_provider_unref(struct connman_provider *provider)
 113 {
 114         DBG("provider %p", provider);
 115
 116         connman_element_unref(&provider->element);
 117 }
 118
 119 static gboolean match_driver(struct connman_provider *provider,
 120                                 struct connman_provider_driver *driver)
 121 {
 122         if (g_strcmp0(driver->name, provider->type) == 0)
 123                 return TRUE;
 124
 125         return FALSE;
 126 }
 127
 128 static int provider_probe(struct connman_provider *provider)
 129 {
 130         GSList *list;
 131
 132         DBG("provider %p name %s", provider, provider->name);
 133
 134         if (provider->driver != NULL)
 135                 return -EALREADY;
 136
 137         for (list = driver_list; list; list = list->next) {
 138                 struct connman_provider_driver *driver = list->data;
 139
 140                 if (match_driver(provider, driver) == FALSE)
 141                         continue;
 142
 143                 DBG("driver %p name %s", driver, driver->name);
 144
 145                 if (driver->probe != NULL && driver->probe(provider) == 0) {
 146                         provider->driver = driver;
 147                         break;
 148                 }
 149         }
 150
 151         if (provider->driver == NULL)
 152                 return -ENODEV;
 153
 154         return 0;
 155 }
 156
 157 int __connman_provider_disconnect(struct connman_provider *provider)
 158 {
 159         int err;
 160
 161         DBG("provider %p", provider);
 162
 163         if (provider->driver != NULL && provider->driver->disconnect != NULL)
 164                 err = provider->driver->disconnect(provider);
 165         else
 166                 return -EOPNOTSUPP;
 167
 168         if (provider->vpn_service != NULL)
 169                 __connman_service_indicate_state(provider->vpn_service,
 170                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 171         if (err < 0) {
 172                 if (err != -EINPROGRESS)
 173                         return err;
 174
 175                 return -EINPROGRESS;
 176         }
 177
 178         return 0;
 179 }
 180
 181 int __connman_provider_connect(struct connman_provider *provider)
 182 {
 183         int err;
 184
 185         DBG("provider %p", provider);
 186
 187         g_free(provider->element.ipv4.address);
 188         g_free(provider->element.ipv4.netmask);
 189         g_free(provider->element.ipv4.gateway);
 190         g_free(provider->element.ipv4.broadcast);
 191         g_free(provider->element.ipv4.pac);
 192
 193         provider->element.ipv4.address = NULL;
 194         provider->element.ipv4.netmask = NULL;
 195         provider->element.ipv4.gateway = NULL;
 196         provider->element.ipv4.broadcast = NULL;
 197         provider->element.ipv4.pac = NULL;
 198
 199         if (provider->driver != NULL && provider->driver->connect != NULL)
 200                 err = provider->driver->connect(provider);
 201         else
 202                 return -EOPNOTSUPP;
 203
 204         if (err < 0) {
 205                 if (err != -EINPROGRESS)
 206                         return err;
 207
 208                 __connman_service_indicate_state(provider->vpn_service,
 209                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 210                 return -EINPROGRESS;
 211         }
 212
 213         return 0;
 214 }
 215
 216 int __connman_provider_remove(const char *path)
 217 {
 218         struct connman_provider *provider;
 219
 220         DBG("path %s", path);
 221
 222         provider = g_hash_table_lookup(provider_hash, path);
 223         if (provider == NULL) {
 224                 DBG("patch %s not found", path);
 225                 return -ENXIO;
 226         }
 227
 228         g_hash_table_remove(provider_hash, path);
 229
 230         return 0;
 231 }
 232
 233 static int set_connected(struct connman_provider *provider,
 234                                         connman_bool_t connected)
 235 {
 236         struct connman_service *service = provider->vpn_service;
 237
 238         if (service == NULL)
 239                 return -ENODEV;
 240
 241         if (connected == TRUE) {
 242                 enum connman_element_type type = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 243                 struct connman_element *element;
 244                 char *nameservers = NULL, *name = NULL;
 245                 const char *value;
 246                 char *second_ns;
 247                 int err;
 248
 249                 __connman_service_indicate_state(provider->vpn_service,
 250                                         CONNMAN_SERVICE_STATE_CONFIGURATION);
 251
 252                 type = CONNMAN_ELEMENT_TYPE_IPV4;
 253
 254                 element = connman_element_create(NULL);
 255                 if (element == NULL)
 256                         return -ENOMEM;
 257
 258                 element->type  = type;
 259                 element->index = provider->element.index;
 260
 261                 err = connman_provider_setup_vpn_ipv4(provider, element);
 262                 if (err < 0) {
 263                         connman_element_unref(element);
 264
 265                         __connman_service_indicate_state(service,
 266                                                 CONNMAN_SERVICE_STATE_FAILURE);
 267
 268                         return err;
 269                 }
 270
 271                 __connman_service_indicate_state(service,
 272                                                 CONNMAN_SERVICE_STATE_READY);
 273
 274                 __connman_service_set_domainname(service, provider->domain);
 275
 276                 name = connman_inet_ifname(provider->element.index);
 277
 278                 nameservers = g_strdup(provider->dns);
 279                 value = nameservers;
 280                 second_ns = strchr(value, ' ');
 281                 if (second_ns)
 282                         *(second_ns++) = 0;
 283                 __connman_service_append_nameserver(service, value);
 284                 value = second_ns;
 285
 286                 while (value) {
 287                         char *next = strchr(value, ' ');
 288                         if (next)
 289                                 *(next++) = 0;
 290
 291                         connman_resolver_append(name, provider->domain, value);
 292                         value = next;
 293                 }
 294
 295                 g_free(nameservers);
 296                 g_free(name);
 297
 298         } else {
 299                 connman_element_unregister_children(&provider->element);
 300                 __connman_service_indicate_state(service,
 301                                                 CONNMAN_SERVICE_STATE_IDLE);
 302         }
 303
 304         return 0;
 305 }
 306
 307 int connman_provider_set_state(struct connman_provider *provider,
 308                                         enum connman_provider_state state)
 309 {
 310         if (provider == NULL || provider->vpn_service == NULL)
 311                 return -EINVAL;
 312
 313         switch (state) {
 314         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 315                 return -EINVAL;
 316         case CONNMAN_PROVIDER_STATE_IDLE:
 317                 return set_connected(provider, FALSE);
 318         case CONNMAN_PROVIDER_STATE_CONNECT:
 319                 return __connman_service_indicate_state(provider->vpn_service,
 320                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 321         case CONNMAN_PROVIDER_STATE_READY:
 322                 return set_connected(provider, TRUE);
 323         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 324                 return __connman_service_indicate_state(provider->vpn_service,
 325                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 326         case CONNMAN_PROVIDER_STATE_FAILURE:
 327                 return __connman_service_indicate_state(provider->vpn_service,
 328                                         CONNMAN_SERVICE_STATE_FAILURE);
 329         }
 330
 331         return -EINVAL;
 332 }
 333
 334 static void unregister_provider(gpointer data)
 335 {
 336         struct connman_provider *provider = data;
 337         struct connman_service *service = provider->vpn_service;
 338
 339         DBG("provider %p", provider);
 340
 341         provider->vpn_service = NULL;
 342         __connman_service_put(service);
 343
 344         connman_element_unregister(&provider->element);
 345         connman_provider_unref(provider);
 346 }
 347
 348 static void provider_destruct(struct connman_element *element)
 349 {
 350         struct connman_provider *provider = element->private;
 351
 352         DBG("provider %p", provider);
 353
 354         g_free(provider->name);
 355         g_free(provider->type);
 356         g_free(provider->domain);
 357         g_free(provider->identifier);
 358         g_free(provider->dns);
 359 }
 360
 361 static void provider_initialize(struct connman_provider *provider)
 362 {
 363         DBG("provider %p", provider);
 364
 365         __connman_element_initialize(&provider->element);
 366
 367         provider->element.private = provider;
 368         provider->element.destruct = provider_destruct;
 369
 370         provider->element.ipv4.address = NULL;
 371         provider->element.ipv4.netmask = NULL;
 372         provider->element.ipv4.gateway = NULL;
 373         provider->element.ipv4.broadcast = NULL;
 374         provider->element.ipv4.pac = NULL;
 375
 376         provider->name = NULL;
 377         provider->type = NULL;
 378         provider->dns = NULL;
 379         provider->domain = NULL;
 380         provider->identifier = NULL;
 381 }
 382
 383 static struct connman_provider *connman_provider_new(void)
 384 {
 385         struct connman_provider *provider;
 386
 387         provider = g_try_new0(struct connman_provider, 1);
 388         if (provider == NULL)
 389                 return NULL;
 390
 391         DBG("provider %p", provider);
 392         provider_initialize(provider);
 393
 394         return provider;
 395 }
 396
 397 static struct connman_provider *connman_provider_get(const char *identifier)
 398 {
 399         struct connman_provider *provider;
 400
 401         provider = g_hash_table_lookup(provider_hash, identifier);
 402         if (provider != NULL)
 403                 return provider;
 404
 405         provider = connman_provider_new();
 406         if (provider == NULL)
 407                 return NULL;
 408
 409         DBG("provider %p", provider);
 410
 411         provider->identifier = g_strdup(identifier);
 412
 413         g_hash_table_insert(provider_hash, provider->identifier, provider);
 414
 415         provider->element.name = g_strdup(identifier);
 416         connman_element_register(&provider->element, NULL);
 417
 418         return provider;
 419 }
 420
 421 static void provider_dbus_ident(char *ident)
 422 {
 423         int i, len = strlen(ident);
 424
 425         for (i = 0; i < len; i++) {
 426                 if (ident[i] >= '0' && ident[i] <= '9')
 427                         continue;
 428                 if (ident[i] >= 'a' && ident[i] <= 'z')
 429                         continue;
 430                 if (ident[i] >= 'A' && ident[i] <= 'Z')
 431                         continue;
 432                 ident[i] = '_';
 433         }
 434 }
 435
 436 int __connman_provider_create_and_connect(DBusMessage *msg)
 437 {
 438         struct connman_provider *provider;
 439         DBusMessageIter iter, array;
 440         const char *type = NULL, *name = NULL, *service_path = NULL;
 441         const char *host = NULL, *domain = NULL;
 442         char *ident;
 443         gboolean created = FALSE;
 444         int err;
 445
 446         dbus_message_iter_init(msg, &iter);
 447         dbus_message_iter_recurse(&iter, &array);
 448
 449         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
 450                 DBusMessageIter entry, value;
 451                 const char *key;
 452
 453                 dbus_message_iter_recurse(&array, &entry);
 454                 dbus_message_iter_get_basic(&entry, &key);
 455
 456                 dbus_message_iter_next(&entry);
 457                 dbus_message_iter_recurse(&entry, &value);
 458
 459                 switch (dbus_message_iter_get_arg_type(&value)) {
 460                 case DBUS_TYPE_STRING:
 461                         if (g_str_equal(key, "Type") == TRUE)
 462                                 dbus_message_iter_get_basic(&value, &type);
 463                         else if (g_str_equal(key, "Name") == TRUE)
 464                                 dbus_message_iter_get_basic(&value, &name);
 465                         else if (g_str_equal(key, "Host") == TRUE)
 466                                 dbus_message_iter_get_basic(&value, &host);
 467                         else if (g_str_equal(key, "VPN.Domain") == TRUE)
 468                                 dbus_message_iter_get_basic(&value, &domain);
 469                         break;
 470                 }
 471
 472                 dbus_message_iter_next(&array);
 473         }
 474
 475         if (host == NULL || domain == NULL) {
 476                 err = -EINVAL;
 477                 goto failed;
 478         }
 479
 480         DBG("Type %s name %s", type, name);
 481
 482         if (type == NULL || name == NULL) {
 483                 err = -EOPNOTSUPP;
 484                 goto failed;
 485         }
 486
 487         ident = g_strdup_printf("%s_%s", host, domain);
 488         provider_dbus_ident(ident);
 489
 490         DBG("ident %s", ident);
 491
 492         provider = connman_provider_lookup(ident);
 493
 494         if (provider == NULL) {
 495                 created = TRUE;
 496                 provider = connman_provider_get(ident);
 497                 if (provider) {
 498                         provider->host = g_strdup(host);
 499                         provider->domain = g_strdup(domain);
 500                         provider->name = g_strdup(name);
 501                         provider->type = g_strdup(type);
 502                 }
 503         }
 504
 505         if (provider == NULL) {
 506                 DBG("can not create provider");
 507                 err = -EOPNOTSUPP;
 508                 goto failed;
 509         }
 510         dbus_message_iter_init(msg, &iter);
 511         dbus_message_iter_recurse(&iter, &array);
 512
 513         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
 514                 DBusMessageIter entry, value;
 515                 const char *key, *str;
 516
 517                 dbus_message_iter_recurse(&array, &entry);
 518                 dbus_message_iter_get_basic(&entry, &key);
 519
 520                 dbus_message_iter_next(&entry);
 521                 dbus_message_iter_recurse(&entry, &value);
 522
 523                 switch (dbus_message_iter_get_arg_type(&value)) {
 524                 case DBUS_TYPE_STRING:
 525                         dbus_message_iter_get_basic(&value, &str);
 526                         connman_provider_set_string(provider, key, str);
 527                         break;
 528                 }
 529
 530                 dbus_message_iter_next(&array);
 531         }
 532
 533         g_free(ident);
 534
 535         if (provider == NULL) {
 536                 err = -EOPNOTSUPP;
 537                 goto failed;
 538         }
 539
 540         if (created == TRUE)
 541                 provider_probe(provider);
 542
 543         if (provider->vpn_service == NULL)
 544                 provider->vpn_service =
 545                         __connman_service_create_from_provider(provider);
 546         if (provider->vpn_service == NULL) {
 547                 err = -EOPNOTSUPP;
 548                 goto failed;
 549         }
 550
 551         err = __connman_service_connect(provider->vpn_service);
 552         if (err < 0 && err != -EINPROGRESS)
 553                 goto failed;
 554
 555         service_path = __connman_service_get_path(provider->vpn_service);
 556         g_dbus_send_reply(connection, msg,
 557                                 DBUS_TYPE_OBJECT_PATH, &service_path,
 558                                                         DBUS_TYPE_INVALID);
 559         return 0;
 560
 561 failed:
 562         if (provider != NULL && created == TRUE) {
 563                 DBG("can not connect delete provider");
 564                 connman_provider_unref(provider);
 565
 566                 if (provider->vpn_service != NULL) {
 567                         __connman_service_put(provider->vpn_service);
 568                         provider->vpn_service = NULL;
 569                 }
 570         }
 571
 572         return err;
 573 }
 574
 575 const char * __connman_provider_get_ident(struct connman_provider *provider)
 576 {
 577         if (provider == NULL)
 578                 return NULL;
 579
 580         return provider->identifier;
 581 }
 582
 583 int connman_provider_set_string(struct connman_provider *provider,
 584                                         const char *key, const char *value)
 585 {
 586         DBG("provider %p key %s value %s", provider, key, value);
 587
 588         if (g_str_equal(key, "Type") == TRUE) {
 589                 g_free(provider->type);
 590                 provider->type = g_strdup(value);
 591         } else if (g_str_equal(key, "Name") == TRUE) {
 592                 g_free(provider->name);
 593                 provider->name = g_strdup(value);
 594         } else if (g_str_equal(key, "Gateway") == TRUE) {
 595                 g_free(provider->element.ipv4.gateway);
 596                 provider->element.ipv4.gateway = g_strdup(value);
 597         } else if (g_str_equal(key, "Address") == TRUE) {
 598                 g_free(provider->element.ipv4.address);
 599                 provider->element.ipv4.address = g_strdup(value);
 600         } else if (g_str_equal(key, "Netmask") == TRUE) {
 601                 g_free(provider->element.ipv4.netmask);
 602                 provider->element.ipv4.netmask = g_strdup(value);
 603         } else if (g_str_equal(key, "PAC") == TRUE) {
 604                 g_free(provider->element.ipv4.pac);
 605                 provider->element.ipv4.pac = g_strdup(value);
 606                 __connman_service_set_proxy_autoconfig(provider->vpn_service,
 607                                                                         value);
 608         } else if (g_str_equal(key, "DNS") == TRUE) {
 609                 g_free(provider->dns);
 610                 provider->dns = g_strdup(value);
 611         } else if (g_str_equal(key, "Domain") == TRUE) {
 612                 g_free(provider->domain);
 613                 provider->domain = g_strdup(value);
 614         }
 615
 616         return connman_element_set_string(&provider->element, key, value);
 617 }
 618
 619 const char *connman_provider_get_string(struct connman_provider *provider,
 620                                                         const char *key)
 621 {
 622         DBG("provider %p key %s", provider, key);
 623
 624         if (g_str_equal(key, "Type") == TRUE)
 625                 return provider->type;
 626         else if (g_str_equal(key, "Name") == TRUE)
 627                 return provider->name;
 628
 629         return connman_element_get_string(&provider->element, key);
 630 }
 631
 632 void *connman_provider_get_data(struct connman_provider *provider)
 633 {
 634         return provider->driver_data;
 635 }
 636
 637 void connman_provider_set_data(struct connman_provider *provider, void *data)
 638 {
 639         provider->driver_data = data;
 640 }
 641
 642 void connman_provider_set_index(struct connman_provider *provider, int index)
 643 {
 644         struct connman_service *service = provider->vpn_service;
 645         struct connman_ipconfig *ipconfig;
 646
 647         DBG("");
 648
 649         if (service == NULL)
 650                 return;
 651
 652         ipconfig = __connman_service_get_ipconfig(service);
 653
 654         if (ipconfig == NULL) {
 655                 __connman_service_create_ipconfig(service, index);
 656
 657                 ipconfig = __connman_service_get_ipconfig(service);
 658                 if (ipconfig == NULL) {
 659                         DBG("Couldnt create ipconfig");
 660                         goto done;
 661                 }
 662         }
 663
 664         connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 665         __connman_ipconfig_set_index(ipconfig, index);
 666
 667
 668 done:
 669         provider->element.index = index;
 670 }
 671
 672 int connman_provider_get_index(struct connman_provider *provider)
 673 {
 674         return provider->element.index;
 675 }
 676
 677 static gint compare_priority(gconstpointer a, gconstpointer b)
 678 {
 679         return 0;
 680 }
 681
 682 static void clean_provider(gpointer key, gpointer value, gpointer user_data)
 683 {
 684         struct connman_provider *provider = value;
 685
 686         if (provider->driver != NULL && provider->driver->remove)
 687                 provider->driver->remove(provider);
 688 }
 689
 690 int connman_provider_driver_register(struct connman_provider_driver *driver)
 691 {
 692         DBG("driver %p name %s", driver, driver->name);
 693
 694         driver_list = g_slist_insert_sorted(driver_list, driver,
 695                                                         compare_priority);
 696         return 0;
 697 }
 698
 699 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 700 {
 701         DBG("driver %p name %s", driver, driver->name);
 702
 703         driver_list = g_slist_remove(driver_list, driver);
 704 }
 705
 706 static void provider_remove(gpointer key, gpointer value,
 707                                                 gpointer user_data)
 708 {
 709         struct connman_provider *provider = value;
 710
 711         g_hash_table_remove(provider_hash, provider->identifier);
 712 }
 713
 714 static void provider_offline_mode(connman_bool_t enabled)
 715 {
 716         DBG("enabled %d", enabled);
 717
 718         if (enabled == TRUE)
 719                 g_hash_table_foreach(provider_hash, provider_remove, NULL);
 720
 721 }
 722
 723 static struct connman_notifier provider_notifier = {
 724         .name                   = "provider",
 725         .offline_mode           = provider_offline_mode,
 726 };
 727
 728 int __connman_provider_init(void)
 729 {
 730         int err;
 731
 732         DBG("");
 733
 734         connection = connman_dbus_get_connection();
 735
 736         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 737                                                 NULL, unregister_provider);
 738
 739         err = connman_notifier_register(&provider_notifier);
 740         if (err < 0) {
 741                 g_hash_table_destroy(provider_hash);
 742                 dbus_connection_unref(connection);
 743         }
 744
 745         return err;
 746 }
 747
 748 void __connman_provider_cleanup(void)
 749 {
 750         DBG("");
 751
 752         connman_notifier_unregister(&provider_notifier);
 753
 754         g_hash_table_foreach(provider_hash, clean_provider, NULL);
 755
 756         g_hash_table_destroy(provider_hash);
 757         provider_hash = NULL;
 758
 759         dbus_connection_unref(connection);
 760 }