src/provider.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2013  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <gdbus.h>
  31 #include <gweb/gresolv.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection = NULL;
  36
  37 static GHashTable *provider_hash = NULL;
  38
  39 static GSList *driver_list = NULL;
  40
  41 struct connman_provider {
  42         int refcount;
  43         bool immutable;
  44         struct connman_service *vpn_service;
  45         int index;
  46         char *identifier;
  47         int family;
  48         struct connman_provider_driver *driver;
  49         void *driver_data;
  50 };
  51
  52 void __connman_provider_append_properties(struct connman_provider *provider,
  53                                                         DBusMessageIter *iter)
  54 {
  55         const char *host, *domain, *type;
  56
  57         if (!provider->driver || !provider->driver->get_property)
  58                 return;
  59
  60         host = provider->driver->get_property(provider, "Host");
  61         domain = provider->driver->get_property(provider, "Domain");
  62         type = provider->driver->get_property(provider, "Type");
  63
  64         if (host)
  65                 connman_dbus_dict_append_basic(iter, "Host",
  66                                         DBUS_TYPE_STRING, &host);
  67
  68         if (domain)
  69                 connman_dbus_dict_append_basic(iter, "Domain",
  70                                         DBUS_TYPE_STRING, &domain);
  71
  72         if (type)
  73                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
  74                                                  &type);
  75 }
  76
  77 struct connman_provider *
  78 connman_provider_ref_debug(struct connman_provider *provider,
  79                         const char *file, int line, const char *caller)
  80 {
  81         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount + 1,
  82                 file, line, caller);
  83
  84         __sync_fetch_and_add(&provider->refcount, 1);
  85
  86         return provider;
  87 }
  88
  89 static void provider_remove(struct connman_provider *provider)
  90 {
  91         if (provider->driver) {
  92                 provider->driver->remove(provider);
  93                 provider->driver = NULL;
  94         }
  95 }
  96
  97 static void provider_destruct(struct connman_provider *provider)
  98 {
  99         DBG("provider %p", provider);
 100
 101         g_free(provider->identifier);
 102         g_free(provider);
 103 }
 104
 105 void connman_provider_unref_debug(struct connman_provider *provider,
 106                                 const char *file, int line, const char *caller)
 107 {
 108         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount - 1,
 109                 file, line, caller);
 110
 111         if (__sync_fetch_and_sub(&provider->refcount, 1) != 1)
 112                 return;
 113
 114         provider_destruct(provider);
 115 }
 116
 117 static int provider_indicate_state(struct connman_provider *provider,
 118                                         enum connman_service_state state)
 119 {
 120         DBG("state %d", state);
 121
 122         __connman_service_ipconfig_indicate_state(provider->vpn_service, state,
 123                                         CONNMAN_IPCONFIG_TYPE_IPV4);
 124
 125         return __connman_service_ipconfig_indicate_state(provider->vpn_service,
 126                                         state, CONNMAN_IPCONFIG_TYPE_IPV6);
 127 }
 128
 129 int connman_provider_disconnect(struct connman_provider *provider)
 130 {
 131         int err;
 132
 133         DBG("provider %p", provider);
 134
 135         if (provider->driver && provider->driver->disconnect)
 136                 err = provider->driver->disconnect(provider);
 137         else
 138                 return -EOPNOTSUPP;
 139
 140         if (provider->vpn_service)
 141                 provider_indicate_state(provider,
 142                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 143
 144         if (err < 0) {
 145                 if (err != -EINPROGRESS)
 146                         return err;
 147
 148                 return -EINPROGRESS;
 149         }
 150
 151         return 0;
 152 }
 153
 154 int connman_provider_remove(struct connman_provider *provider)
 155 {
 156         DBG("Removing VPN %s", provider->identifier);
 157
 158         provider_remove(provider);
 159
 160         connman_provider_set_state(provider, CONNMAN_PROVIDER_STATE_IDLE);
 161
 162         g_hash_table_remove(provider_hash, provider->identifier);
 163
 164         return 0;
 165 }
 166
 167 int __connman_provider_connect(struct connman_provider *provider)
 168 {
 169         int err;
 170
 171         DBG("provider %p", provider);
 172
 173         if (provider->driver && provider->driver->connect)
 174                 err = provider->driver->connect(provider);
 175         else
 176                 return -EOPNOTSUPP;
 177
 178         if (err < 0) {
 179                 if (err != -EINPROGRESS)
 180                         return err;
 181
 182                 provider_indicate_state(provider,
 183                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 184
 185                 return -EINPROGRESS;
 186         }
 187
 188         return 0;
 189 }
 190
 191 int __connman_provider_remove_by_path(const char *path)
 192 {
 193         struct connman_provider *provider;
 194         GHashTableIter iter;
 195         gpointer value, key;
 196
 197         DBG("path %s", path);
 198
 199         g_hash_table_iter_init(&iter, provider_hash);
 200         while (g_hash_table_iter_next(&iter, &key, &value)) {
 201                 const char *srv_path;
 202                 provider = value;
 203
 204                 if (!provider->vpn_service)
 205                         continue;
 206
 207                 srv_path = __connman_service_get_path(provider->vpn_service);
 208
 209                 if (g_strcmp0(srv_path, path) == 0) {
 210                         DBG("Removing VPN %s", provider->identifier);
 211
 212                         provider_remove(provider);
 213
 214                         connman_provider_set_state(provider,
 215                                                 CONNMAN_PROVIDER_STATE_IDLE);
 216
 217                         g_hash_table_remove(provider_hash,
 218                                                 provider->identifier);
 219                         return 0;
 220                 }
 221         }
 222
 223         return -ENXIO;
 224 }
 225
 226 static int set_connected(struct connman_provider *provider,
 227                                         bool connected)
 228 {
 229         struct connman_service *service = provider->vpn_service;
 230         struct connman_ipconfig *ipconfig;
 231
 232         if (!service)
 233                 return -ENODEV;
 234
 235         ipconfig = __connman_service_get_ipconfig(service, provider->family);
 236
 237         if (connected) {
 238                 if (!ipconfig) {
 239                         provider_indicate_state(provider,
 240                                                 CONNMAN_SERVICE_STATE_FAILURE);
 241                         return -EIO;
 242                 }
 243
 244                 __connman_ipconfig_address_add(ipconfig);
 245                 __connman_ipconfig_gateway_add(ipconfig);
 246
 247                 provider_indicate_state(provider,
 248                                         CONNMAN_SERVICE_STATE_READY);
 249
 250                 if (provider->driver && provider->driver->set_routes)
 251                         provider->driver->set_routes(provider,
 252                                                 CONNMAN_PROVIDER_ROUTE_ALL);
 253
 254         } else {
 255                 if (ipconfig) {
 256                         provider_indicate_state(provider,
 257                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 258                         __connman_ipconfig_gateway_remove(ipconfig);
 259                 }
 260
 261                 provider_indicate_state(provider,
 262                                         CONNMAN_SERVICE_STATE_IDLE);
 263         }
 264
 265         return 0;
 266 }
 267
 268 int connman_provider_set_state(struct connman_provider *provider,
 269                                         enum connman_provider_state state)
 270 {
 271         if (!provider || !provider->vpn_service)
 272                 return -EINVAL;
 273
 274         switch (state) {
 275         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 276                 return -EINVAL;
 277         case CONNMAN_PROVIDER_STATE_IDLE:
 278                 return set_connected(provider, false);
 279         case CONNMAN_PROVIDER_STATE_CONNECT:
 280                 return provider_indicate_state(provider,
 281                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 282         case CONNMAN_PROVIDER_STATE_READY:
 283                 return set_connected(provider, true);
 284         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 285                 return provider_indicate_state(provider,
 286                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 287         case CONNMAN_PROVIDER_STATE_FAILURE:
 288                 return provider_indicate_state(provider,
 289                                         CONNMAN_SERVICE_STATE_FAILURE);
 290         }
 291
 292         return -EINVAL;
 293 }
 294
 295 int connman_provider_indicate_error(struct connman_provider *provider,
 296                                         enum connman_provider_error error)
 297 {
 298         enum connman_service_error service_error;
 299
 300         switch (error) {
 301         case CONNMAN_PROVIDER_ERROR_LOGIN_FAILED:
 302                 service_error = CONNMAN_SERVICE_ERROR_LOGIN_FAILED;
 303                 break;
 304         case CONNMAN_PROVIDER_ERROR_AUTH_FAILED:
 305                 service_error = CONNMAN_SERVICE_ERROR_AUTH_FAILED;
 306                 break;
 307         case CONNMAN_PROVIDER_ERROR_CONNECT_FAILED:
 308                 service_error = CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
 309                 break;
 310         default:
 311                 service_error = CONNMAN_SERVICE_ERROR_UNKNOWN;
 312                 break;
 313         }
 314
 315         return __connman_service_indicate_error(provider->vpn_service,
 316                                                         service_error);
 317 }
 318
 319 int connman_provider_create_service(struct connman_provider *provider)
 320 {
 321         if (provider->vpn_service) {
 322                 bool connected;
 323
 324                 connected = __connman_service_is_connected_state(
 325                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV4);
 326                 if (connected)
 327                         return -EALREADY;
 328
 329                 connected = __connman_service_is_connected_state(
 330                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV6);
 331                 if (connected)
 332                         return -EALREADY;
 333
 334                 return 0;
 335         }
 336
 337         provider->vpn_service =
 338                 __connman_service_create_from_provider(provider);
 339
 340         if (!provider->vpn_service) {
 341                 connman_warn("service creation failed for provider %s",
 342                         provider->identifier);
 343
 344                 g_hash_table_remove(provider_hash, provider->identifier);
 345                 return -EOPNOTSUPP;
 346         }
 347
 348         return 0;
 349 }
 350
 351 bool __connman_provider_is_immutable(struct connman_provider *provider)
 352
 353 {
 354         if (provider)
 355                 return provider->immutable;
 356
 357         return false;
 358 }
 359
 360 int connman_provider_set_immutable(struct connman_provider *provider,
 361                                                 bool immutable)
 362 {
 363         if (!provider)
 364                 return -EINVAL;
 365
 366         provider->immutable = immutable;
 367
 368         return 0;
 369 }
 370
 371 static struct connman_provider *provider_lookup(const char *identifier)
 372 {
 373         return g_hash_table_lookup(provider_hash, identifier);
 374 }
 375
 376 static void connection_ready(DBusMessage *msg, int error_code, void *user_data)
 377 {
 378         DBusMessage *reply;
 379         const char *identifier = user_data;
 380
 381         DBG("msg %p error %d", msg, error_code);
 382
 383         if (error_code != 0) {
 384                 reply = __connman_error_failed(msg, -error_code);
 385                 if (!g_dbus_send_message(connection, reply))
 386                         DBG("reply %p send failed", reply);
 387         } else {
 388                 const char *path;
 389                 struct connman_provider *provider;
 390
 391                 provider = provider_lookup(identifier);
 392                 if (!provider) {
 393                         reply = __connman_error_failed(msg, EINVAL);
 394                         g_dbus_send_message(connection, reply);
 395                         return;
 396                 }
 397
 398                 path = __connman_service_get_path(provider->vpn_service);
 399
 400                 g_dbus_send_reply(connection, msg,
 401                                 DBUS_TYPE_OBJECT_PATH, &path,
 402                                 DBUS_TYPE_INVALID);
 403         }
 404 }
 405
 406 int __connman_provider_create_and_connect(DBusMessage *msg)
 407 {
 408         struct connman_provider_driver *driver;
 409
 410         if (!driver_list)
 411                 return -EINVAL;
 412
 413         driver = driver_list->data;
 414         if (!driver || !driver->create)
 415                 return -EINVAL;
 416
 417         DBG("msg %p", msg);
 418
 419         return driver->create(msg, connection_ready);
 420 }
 421
 422 const char *__connman_provider_get_ident(struct connman_provider *provider)
 423 {
 424         if (!provider)
 425                 return NULL;
 426
 427         return provider->identifier;
 428 }
 429
 430 int connman_provider_set_string(struct connman_provider *provider,
 431                                         const char *key, const char *value)
 432 {
 433         if (provider->driver && provider->driver->set_property)
 434                 return provider->driver->set_property(provider, key, value);
 435
 436         return 0;
 437 }
 438
 439 const char *connman_provider_get_string(struct connman_provider *provider,
 440                                                         const char *key)
 441 {
 442         if (provider->driver && provider->driver->get_property)
 443                 return provider->driver->get_property(provider, key);
 444
 445         return NULL;
 446 }
 447
 448 bool
 449 __connman_provider_check_routes(struct connman_provider *provider)
 450 {
 451         if (!provider)
 452                 return false;
 453
 454         if (provider->driver && provider->driver->check_routes)
 455                 return provider->driver->check_routes(provider);
 456
 457         return false;
 458 }
 459
 460 void *connman_provider_get_data(struct connman_provider *provider)
 461 {
 462         return provider->driver_data;
 463 }
 464
 465 void connman_provider_set_data(struct connman_provider *provider, void *data)
 466 {
 467         provider->driver_data = data;
 468 }
 469
 470 void connman_provider_set_index(struct connman_provider *provider, int index)
 471 {
 472         struct connman_service *service = provider->vpn_service;
 473         struct connman_ipconfig *ipconfig;
 474
 475         DBG("");
 476
 477         if (!service)
 478                 return;
 479
 480         ipconfig = __connman_service_get_ip4config(service);
 481
 482         if (!ipconfig) {
 483                 connman_service_create_ip4config(service, index);
 484
 485                 ipconfig = __connman_service_get_ip4config(service);
 486                 if (!ipconfig) {
 487                         DBG("Couldnt create ipconfig");
 488                         goto done;
 489                 }
 490         }
 491
 492         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 493         __connman_ipconfig_set_index(ipconfig, index);
 494
 495         ipconfig = __connman_service_get_ip6config(service);
 496
 497         if (!ipconfig) {
 498                 connman_service_create_ip6config(service, index);
 499
 500                 ipconfig = __connman_service_get_ip6config(service);
 501                 if (!ipconfig) {
 502                         DBG("Couldnt create ipconfig for IPv6");
 503                         goto done;
 504                 }
 505         }
 506
 507         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 508         __connman_ipconfig_set_index(ipconfig, index);
 509
 510 done:
 511         provider->index = index;
 512 }
 513
 514 int connman_provider_get_index(struct connman_provider *provider)
 515 {
 516         return provider->index;
 517 }
 518
 519 int connman_provider_set_ipaddress(struct connman_provider *provider,
 520                                         struct connman_ipaddress *ipaddress)
 521 {
 522         struct connman_ipconfig *ipconfig = NULL;
 523
 524         ipconfig = __connman_service_get_ipconfig(provider->vpn_service,
 525                                                         ipaddress->family);
 526         if (!ipconfig)
 527                 return -EINVAL;
 528
 529         provider->family = ipaddress->family;
 530
 531         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 532
 533         __connman_ipconfig_set_local(ipconfig, ipaddress->local);
 534         __connman_ipconfig_set_peer(ipconfig, ipaddress->peer);
 535         __connman_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
 536         __connman_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
 537         __connman_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
 538
 539         return 0;
 540 }
 541
 542 int connman_provider_set_pac(struct connman_provider *provider, const char *pac)
 543 {
 544         DBG("provider %p pac %s", provider, pac);
 545
 546         __connman_service_set_pac(provider->vpn_service, pac);
 547
 548         return 0;
 549 }
 550
 551
 552 int connman_provider_set_domain(struct connman_provider *provider,
 553                                         const char *domain)
 554 {
 555         DBG("provider %p domain %s", provider, domain);
 556
 557         __connman_service_set_domainname(provider->vpn_service, domain);
 558
 559         return 0;
 560 }
 561
 562 int connman_provider_set_nameservers(struct connman_provider *provider,
 563                                         char * const *nameservers)
 564 {
 565         int i;
 566
 567         DBG("provider %p nameservers %p", provider, nameservers);
 568
 569         __connman_service_nameserver_clear(provider->vpn_service);
 570
 571         if (!nameservers)
 572                 return 0;
 573
 574         for (i = 0; nameservers[i]; i++)
 575                 __connman_service_nameserver_append(provider->vpn_service,
 576                                                 nameservers[i], false);
 577
 578         return 0;
 579 }
 580
 581 static void unregister_provider(gpointer data)
 582 {
 583         struct connman_provider *provider = data;
 584
 585         DBG("provider %p service %p", provider, provider->vpn_service);
 586
 587         if (provider->vpn_service) {
 588                 connman_service_unref(provider->vpn_service);
 589                 provider->vpn_service = NULL;
 590         }
 591
 592         connman_provider_unref(provider);
 593 }
 594
 595 static gint compare_priority(gconstpointer a, gconstpointer b)
 596 {
 597         return 0;
 598 }
 599
 600 int connman_provider_driver_register(struct connman_provider_driver *driver)
 601 {
 602         DBG("driver %p name %s", driver, driver->name);
 603
 604         driver_list = g_slist_insert_sorted(driver_list, driver,
 605                                                         compare_priority);
 606         return 0;
 607 }
 608
 609 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 610 {
 611         DBG("driver %p name %s", driver, driver->name);
 612
 613         driver_list = g_slist_remove(driver_list, driver);
 614 }
 615
 616 void connman_provider_set_driver(struct connman_provider *provider,
 617                                 struct connman_provider_driver *driver)
 618 {
 619         provider->driver = driver;
 620 }
 621
 622 static void provider_disconnect_all(gpointer key, gpointer value,
 623                                                 gpointer user_data)
 624 {
 625         struct connman_provider *provider = value;
 626
 627         connman_provider_disconnect(provider);
 628 }
 629
 630 static void provider_offline_mode(bool enabled)
 631 {
 632         DBG("enabled %d", enabled);
 633
 634         if (enabled)
 635                 g_hash_table_foreach(provider_hash, provider_disconnect_all,
 636                                                                         NULL);
 637
 638 }
 639
 640 static void provider_initialize(struct connman_provider *provider)
 641 {
 642         DBG("provider %p", provider);
 643
 644         provider->index = 0;
 645         provider->identifier = NULL;
 646 }
 647
 648 static struct connman_provider *provider_new(void)
 649 {
 650         struct connman_provider *provider;
 651
 652         provider = g_try_new0(struct connman_provider, 1);
 653         if (!provider)
 654                 return NULL;
 655
 656         provider->refcount = 1;
 657
 658         DBG("provider %p", provider);
 659         provider_initialize(provider);
 660
 661         return provider;
 662 }
 663
 664 struct connman_provider *connman_provider_get(const char *identifier)
 665 {
 666         struct connman_provider *provider;
 667
 668         provider = g_hash_table_lookup(provider_hash, identifier);
 669         if (provider)
 670                 return provider;
 671
 672         provider = provider_new();
 673         if (!provider)
 674                 return NULL;
 675
 676         DBG("provider %p", provider);
 677
 678         provider->identifier = g_strdup(identifier);
 679
 680         g_hash_table_insert(provider_hash, provider->identifier, provider);
 681
 682         return provider;
 683 }
 684
 685 void connman_provider_put(struct connman_provider *provider)
 686 {
 687         g_hash_table_remove(provider_hash, provider->identifier);
 688 }
 689
 690 static struct connman_provider *provider_get(int index)
 691 {
 692         GHashTableIter iter;
 693         gpointer value, key;
 694
 695         g_hash_table_iter_init(&iter, provider_hash);
 696
 697         while (g_hash_table_iter_next(&iter, &key, &value)) {
 698                 struct connman_provider *provider = value;
 699
 700                 if (provider->index == index)
 701                         return provider;
 702         }
 703
 704         return NULL;
 705 }
 706
 707 static void provider_service_changed(struct connman_service *service,
 708                                 enum connman_service_state state)
 709 {
 710         struct connman_provider *provider;
 711         int vpn_index, service_index;
 712
 713         if (!service)
 714                 return;
 715
 716         switch (state) {
 717         case CONNMAN_SERVICE_STATE_UNKNOWN:
 718         case CONNMAN_SERVICE_STATE_IDLE:
 719         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 720         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 721         case CONNMAN_SERVICE_STATE_READY:
 722         case CONNMAN_SERVICE_STATE_ONLINE:
 723                 return;
 724         case CONNMAN_SERVICE_STATE_DISCONNECT:
 725         case CONNMAN_SERVICE_STATE_FAILURE:
 726                 break;
 727         }
 728
 729         service_index = __connman_service_get_index(service);
 730
 731         vpn_index = __connman_connection_get_vpn_index(service_index);
 732
 733         DBG("service %p %s state %d index %d/%d", service,
 734                 __connman_service_get_ident(service),
 735                 state, service_index, vpn_index);
 736
 737         if (vpn_index < 0)
 738                 return;
 739
 740         provider = provider_get(vpn_index);
 741         if (!provider)
 742                 return;
 743
 744         DBG("disconnect %p index %d", provider, vpn_index);
 745
 746         connman_provider_disconnect(provider);
 747
 748         return;
 749 }
 750
 751 static struct connman_notifier provider_notifier = {
 752         .name                   = "provider",
 753         .offline_mode           = provider_offline_mode,
 754         .service_state_changed  = provider_service_changed,
 755 };
 756
 757 int __connman_provider_init(void)
 758 {
 759         int err;
 760
 761         DBG("");
 762
 763         connection = connman_dbus_get_connection();
 764
 765         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 766                                                 NULL, unregister_provider);
 767
 768         err = connman_notifier_register(&provider_notifier);
 769         if (err < 0) {
 770                 g_hash_table_destroy(provider_hash);
 771                 dbus_connection_unref(connection);
 772         }
 773
 774         return err;
 775 }
 776
 777 void __connman_provider_cleanup(void)
 778 {
 779         DBG("");
 780
 781         connman_notifier_unregister(&provider_notifier);
 782
 783         g_hash_table_destroy(provider_hash);
 784         provider_hash = NULL;
 785
 786         dbus_connection_unref(connection);
 787 }