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