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