src/provider.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <gdbus.h>
  31 #include <gweb/gresolv.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection = NULL;
  36
  37 static GHashTable *provider_hash = NULL;
  38
  39 static GSList *driver_list = NULL;
  40
  41 struct connman_provider {
  42         int refcount;
  43         struct connman_service *vpn_service;
  44         int index;
  45         char *identifier;
  46         int family;
  47         struct connman_provider_driver *driver;
  48         void *driver_data;
  49 };
  50
  51 void __connman_provider_append_properties(struct connman_provider *provider,
  52                                                         DBusMessageIter *iter)
  53 {
  54         const char *host, *domain, *type;
  55
  56         if (provider->driver == NULL || provider->driver->get_property == NULL)
  57                 return;
  58
  59         host = provider->driver->get_property(provider, "Host");
  60         domain = provider->driver->get_property(provider, "Domain");
  61         type = provider->driver->get_property(provider, "Type");
  62
  63         if (host != NULL)
  64                 connman_dbus_dict_append_basic(iter, "Host",
  65                                         DBUS_TYPE_STRING, &host);
  66
  67         if (domain != NULL)
  68                 connman_dbus_dict_append_basic(iter, "Domain",
  69                                         DBUS_TYPE_STRING, &domain);
  70
  71         if (type != NULL)
  72                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
  73                                                  &type);
  74 }
  75
  76 struct connman_provider *
  77 connman_provider_ref_debug(struct connman_provider *provider,
  78                         const char *file, int line, const char *caller)
  79 {
  80         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount + 1,
  81                 file, line, caller);
  82
  83         __sync_fetch_and_add(&provider->refcount, 1);
  84
  85         return provider;
  86 }
  87
  88 static void provider_remove(struct connman_provider *provider)
  89 {
  90         if (provider->driver != NULL) {
  91                 provider->driver->remove(provider);
  92                 provider->driver = NULL;
  93         }
  94 }
  95
  96 static void provider_destruct(struct connman_provider *provider)
  97 {
  98         DBG("provider %p", provider);
  99
 100         g_free(provider->identifier);
 101         g_free(provider);
 102 }
 103
 104 void connman_provider_unref_debug(struct connman_provider *provider,
 105                                 const char *file, int line, const char *caller)
 106 {
 107         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount - 1,
 108                 file, line, caller);
 109
 110         if (__sync_fetch_and_sub(&provider->refcount, 1) != 1)
 111                 return;
 112
 113         provider_destruct(provider);
 114 }
 115
 116 static int provider_indicate_state(struct connman_provider *provider,
 117                                         enum connman_service_state state)
 118 {
 119         DBG("state %d", state);
 120
 121         __connman_service_ipconfig_indicate_state(provider->vpn_service, state,
 122                                         CONNMAN_IPCONFIG_TYPE_IPV4);
 123
 124         return __connman_service_ipconfig_indicate_state(provider->vpn_service,
 125                                         state, CONNMAN_IPCONFIG_TYPE_IPV6);
 126 }
 127
 128 int connman_provider_disconnect(struct connman_provider *provider)
 129 {
 130         int err;
 131
 132         DBG("provider %p", provider);
 133
 134         if (provider->driver != NULL && provider->driver->disconnect != NULL)
 135                 err = provider->driver->disconnect(provider);
 136         else
 137                 return -EOPNOTSUPP;
 138
 139         if (provider->vpn_service != NULL)
 140                 provider_indicate_state(provider,
 141                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 142
 143         if (err < 0) {
 144                 if (err != -EINPROGRESS)
 145                         return err;
 146
 147                 return -EINPROGRESS;
 148         }
 149
 150         return 0;
 151 }
 152
 153 int __connman_provider_connect(struct connman_provider *provider)
 154 {
 155         int err;
 156
 157         DBG("provider %p", provider);
 158
 159         if (provider->driver != NULL && provider->driver->connect != NULL) {
 160                 err = provider->driver->connect(provider);
 161         } else
 162                 return -EOPNOTSUPP;
 163
 164         if (err < 0) {
 165                 if (err != -EINPROGRESS)
 166                         return err;
 167
 168                 provider_indicate_state(provider,
 169                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 170
 171                 return -EINPROGRESS;
 172         }
 173
 174         return 0;
 175 }
 176
 177 int __connman_provider_remove(const char *path)
 178 {
 179         struct connman_provider *provider;
 180         GHashTableIter iter;
 181         gpointer value, key;
 182
 183         DBG("path %s", path);
 184
 185         g_hash_table_iter_init(&iter, provider_hash);
 186         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 187                 const char *srv_path;
 188                 provider = value;
 189
 190                 if (provider->vpn_service == NULL)
 191                         continue;
 192
 193                 srv_path = __connman_service_get_path(provider->vpn_service);
 194
 195                 if (g_strcmp0(srv_path, path) == 0) {
 196                         DBG("Removing VPN %s", provider->identifier);
 197
 198                         provider_remove(provider);
 199
 200                         g_hash_table_remove(provider_hash,
 201                                                 provider->identifier);
 202                         return 0;
 203                 }
 204         }
 205
 206         return -ENXIO;
 207 }
 208
 209 static int set_connected(struct connman_provider *provider,
 210                                         connman_bool_t connected)
 211 {
 212         struct connman_service *service = provider->vpn_service;
 213         struct connman_ipconfig *ipconfig;
 214
 215         if (service == NULL)
 216                 return -ENODEV;
 217
 218         ipconfig = __connman_service_get_ipconfig(service, provider->family);
 219
 220         if (connected == TRUE) {
 221                 if (ipconfig == NULL) {
 222                         provider_indicate_state(provider,
 223                                                 CONNMAN_SERVICE_STATE_FAILURE);
 224                         return -EIO;
 225                 }
 226
 227                 __connman_ipconfig_address_add(ipconfig);
 228                 __connman_ipconfig_gateway_add(ipconfig);
 229
 230                 provider_indicate_state(provider,
 231                                         CONNMAN_SERVICE_STATE_READY);
 232
 233                 if (provider->driver != NULL && provider->driver->set_routes)
 234                         provider->driver->set_routes(provider,
 235                                                 CONNMAN_PROVIDER_ROUTE_ALL);
 236
 237         } else {
 238                 if (ipconfig != NULL) {
 239                         provider_indicate_state(provider,
 240                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 241                         __connman_ipconfig_gateway_remove(ipconfig);
 242                 }
 243
 244                 provider_indicate_state(provider,
 245                                         CONNMAN_SERVICE_STATE_IDLE);
 246         }
 247
 248         return 0;
 249 }
 250
 251 int connman_provider_set_state(struct connman_provider *provider,
 252                                         enum connman_provider_state state)
 253 {
 254         if (provider == NULL || provider->vpn_service == NULL)
 255                 return -EINVAL;
 256
 257         switch (state) {
 258         case CONNMAN_PROVIDER_STATE_UNKNOWN:
 259                 return -EINVAL;
 260         case CONNMAN_PROVIDER_STATE_IDLE:
 261                 return set_connected(provider, FALSE);
 262         case CONNMAN_PROVIDER_STATE_CONNECT:
 263                 return provider_indicate_state(provider,
 264                                         CONNMAN_SERVICE_STATE_ASSOCIATION);
 265         case CONNMAN_PROVIDER_STATE_READY:
 266                 return set_connected(provider, TRUE);
 267         case CONNMAN_PROVIDER_STATE_DISCONNECT:
 268                 return provider_indicate_state(provider,
 269                                         CONNMAN_SERVICE_STATE_DISCONNECT);
 270         case CONNMAN_PROVIDER_STATE_FAILURE:
 271                 return provider_indicate_state(provider,
 272                                         CONNMAN_SERVICE_STATE_FAILURE);
 273         }
 274
 275         return -EINVAL;
 276 }
 277
 278 int connman_provider_indicate_error(struct connman_provider *provider,
 279                                         enum connman_provider_error error)
 280 {
 281         enum connman_service_error service_error;
 282
 283         switch (error) {
 284         case CONNMAN_PROVIDER_ERROR_LOGIN_FAILED:
 285                 service_error = CONNMAN_SERVICE_ERROR_LOGIN_FAILED;
 286                 break;
 287         case CONNMAN_PROVIDER_ERROR_AUTH_FAILED:
 288                 service_error = CONNMAN_SERVICE_ERROR_AUTH_FAILED;
 289                 break;
 290         case CONNMAN_PROVIDER_ERROR_CONNECT_FAILED:
 291                 service_error = CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
 292                 break;
 293         default:
 294                 service_error = CONNMAN_SERVICE_ERROR_UNKNOWN;
 295                 break;
 296         }
 297
 298         return __connman_service_indicate_error(provider->vpn_service,
 299                                                         service_error);
 300 }
 301
 302 int connman_provider_create_service(struct connman_provider *provider)
 303 {
 304         if (provider->vpn_service != NULL) {
 305                 connman_bool_t connected;
 306
 307                 connected = __connman_service_is_connected_state(
 308                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV4);
 309                 if (connected == TRUE)
 310                         return -EALREADY;
 311
 312                 connected = __connman_service_is_connected_state(
 313                         provider->vpn_service, CONNMAN_IPCONFIG_TYPE_IPV6);
 314                 if (connected == TRUE)
 315                         return -EALREADY;
 316
 317                 return 0;
 318         }
 319
 320         provider->vpn_service =
 321                 __connman_service_create_from_provider(provider);
 322
 323         if (provider->vpn_service == NULL) {
 324                 connman_warn("service creation failed for provider %s",
 325                         provider->identifier);
 326
 327                 g_hash_table_remove(provider_hash, provider->identifier);
 328                 return -EOPNOTSUPP;
 329         }
 330
 331         return 0;
 332 }
 333
 334 static struct connman_provider *provider_lookup(const char *identifier)
 335 {
 336         return g_hash_table_lookup(provider_hash, identifier);
 337 }
 338
 339 static void connection_ready(DBusMessage *msg, int error_code, void *user_data)
 340 {
 341         DBusMessage *reply;
 342         const char *identifier = user_data;
 343
 344         DBG("msg %p error %d", msg, error_code);
 345
 346         if (error_code != 0) {
 347                 reply = __connman_error_failed(msg, -error_code);
 348                 if (g_dbus_send_message(connection, reply) == FALSE)
 349                         DBG("reply %p send failed", reply);
 350         } else {
 351                 const char *path;
 352                 struct connman_provider *provider;
 353
 354                 provider = provider_lookup(identifier);
 355                 if (provider == NULL) {
 356                         reply = __connman_error_failed(msg, -EINVAL);
 357                         g_dbus_send_message(connection, reply);
 358                         return;
 359                 }
 360
 361                 path = __connman_service_get_path(provider->vpn_service);
 362
 363                 g_dbus_send_reply(connection, msg,
 364                                 DBUS_TYPE_OBJECT_PATH, &path,
 365                                 DBUS_TYPE_INVALID);
 366         }
 367 }
 368
 369 int __connman_provider_create_and_connect(DBusMessage *msg)
 370 {
 371         struct connman_provider_driver *driver;
 372
 373         if (driver_list == NULL)
 374                 return -EINVAL;
 375
 376         driver = driver_list->data;
 377         if (driver == NULL || driver->create == NULL)
 378                 return -EINVAL;
 379
 380         DBG("msg %p", msg);
 381
 382         return driver->create(msg, connection_ready);
 383 }
 384
 385 const char * __connman_provider_get_ident(struct connman_provider *provider)
 386 {
 387         if (provider == NULL)
 388                 return NULL;
 389
 390         return provider->identifier;
 391 }
 392
 393 int connman_provider_set_string(struct connman_provider *provider,
 394                                         const char *key, const char *value)
 395 {
 396         if (provider->driver != NULL && provider->driver->set_property)
 397                 return provider->driver->set_property(provider, key, value);
 398
 399         return 0;
 400 }
 401
 402 const char *connman_provider_get_string(struct connman_provider *provider,
 403                                                         const char *key)
 404 {
 405         if (provider->driver != NULL && provider->driver->get_property)
 406                 return provider->driver->get_property(provider, key);
 407
 408         return NULL;
 409 }
 410
 411 connman_bool_t
 412 __connman_provider_check_routes(struct connman_provider *provider)
 413 {
 414         if (provider == NULL)
 415                 return FALSE;
 416
 417         if (provider->driver != NULL && provider->driver->check_routes)
 418                 return provider->driver->check_routes(provider);
 419
 420         return FALSE;
 421 }
 422
 423 void *connman_provider_get_data(struct connman_provider *provider)
 424 {
 425         return provider->driver_data;
 426 }
 427
 428 void connman_provider_set_data(struct connman_provider *provider, void *data)
 429 {
 430         provider->driver_data = data;
 431 }
 432
 433 void connman_provider_set_index(struct connman_provider *provider, int index)
 434 {
 435         struct connman_service *service = provider->vpn_service;
 436         struct connman_ipconfig *ipconfig;
 437
 438         DBG("");
 439
 440         if (service == NULL)
 441                 return;
 442
 443         ipconfig = __connman_service_get_ip4config(service);
 444
 445         if (ipconfig == NULL) {
 446                 connman_service_create_ip4config(service, index);
 447
 448                 ipconfig = __connman_service_get_ip4config(service);
 449                 if (ipconfig == NULL) {
 450                         DBG("Couldnt create ipconfig");
 451                         goto done;
 452                 }
 453         }
 454
 455         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 456         __connman_ipconfig_set_index(ipconfig, index);
 457
 458         ipconfig = __connman_service_get_ip6config(service);
 459
 460         if (ipconfig == NULL) {
 461                 connman_service_create_ip6config(service, index);
 462
 463                 ipconfig = __connman_service_get_ip6config(service);
 464                 if (ipconfig == NULL) {
 465                         DBG("Couldnt create ipconfig for IPv6");
 466                         goto done;
 467                 }
 468         }
 469
 470         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_OFF);
 471         __connman_ipconfig_set_index(ipconfig, index);
 472
 473 done:
 474         provider->index = index;
 475 }
 476
 477 int connman_provider_get_index(struct connman_provider *provider)
 478 {
 479         return provider->index;
 480 }
 481
 482 int connman_provider_set_ipaddress(struct connman_provider *provider,
 483                                         struct connman_ipaddress *ipaddress)
 484 {
 485         struct connman_ipconfig *ipconfig = NULL;
 486
 487         ipconfig = __connman_service_get_ipconfig(provider->vpn_service,
 488                                                         ipaddress->family);
 489         if (ipconfig == NULL)
 490                 return -EINVAL;
 491
 492         provider->family = ipaddress->family;
 493
 494         __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_FIXED);
 495
 496         __connman_ipconfig_set_local(ipconfig, ipaddress->local);
 497         __connman_ipconfig_set_peer(ipconfig, ipaddress->peer);
 498         __connman_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
 499         __connman_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
 500         __connman_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
 501
 502         return 0;
 503 }
 504
 505 int connman_provider_set_pac(struct connman_provider *provider, const char *pac)
 506 {
 507         DBG("provider %p pac %s", provider, pac);
 508
 509         __connman_service_set_pac(provider->vpn_service, pac);
 510
 511         return 0;
 512 }
 513
 514
 515 int connman_provider_set_domain(struct connman_provider *provider,
 516                                         const char *domain)
 517 {
 518         DBG("provider %p domain %s", provider, domain);
 519
 520         __connman_service_set_domainname(provider->vpn_service, domain);
 521
 522         return 0;
 523 }
 524
 525 int connman_provider_set_nameservers(struct connman_provider *provider,
 526                                         const char *nameservers)
 527 {
 528         int i;
 529         char **nameservers_array = NULL;
 530
 531         DBG("provider %p nameservers %s", provider, nameservers);
 532
 533         __connman_service_nameserver_clear(provider->vpn_service);
 534
 535         if (nameservers == NULL)
 536                 return 0;
 537
 538         nameservers_array = g_strsplit(nameservers, " ", 0);
 539
 540         for (i = 0; nameservers_array[i] != NULL; i++) {
 541                 __connman_service_nameserver_append(provider->vpn_service,
 542                                                 nameservers_array[i], FALSE);
 543         }
 544
 545         g_strfreev(nameservers_array);
 546
 547         return 0;
 548 }
 549
 550 static void unregister_provider(gpointer data)
 551 {
 552         struct connman_provider *provider = data;
 553
 554         DBG("provider %p service %p", provider, provider->vpn_service);
 555
 556         if (provider->vpn_service != NULL) {
 557                 connman_service_unref(provider->vpn_service);
 558                 provider->vpn_service = NULL;
 559         }
 560
 561         connman_provider_unref(provider);
 562 }
 563
 564 static gint compare_priority(gconstpointer a, gconstpointer b)
 565 {
 566         return 0;
 567 }
 568
 569 int connman_provider_driver_register(struct connman_provider_driver *driver)
 570 {
 571         DBG("driver %p name %s", driver, driver->name);
 572
 573         driver_list = g_slist_insert_sorted(driver_list, driver,
 574                                                         compare_priority);
 575         return 0;
 576 }
 577
 578 void connman_provider_driver_unregister(struct connman_provider_driver *driver)
 579 {
 580         DBG("driver %p name %s", driver, driver->name);
 581
 582         driver_list = g_slist_remove(driver_list, driver);
 583 }
 584
 585 void connman_provider_set_driver(struct connman_provider *provider,
 586                                 struct connman_provider_driver *driver)
 587 {
 588         provider->driver = driver;
 589 }
 590
 591 static void provider_disconnect_all(gpointer key, gpointer value,
 592                                                 gpointer user_data)
 593 {
 594         struct connman_provider *provider = value;
 595
 596         connman_provider_disconnect(provider);
 597 }
 598
 599 static void provider_offline_mode(connman_bool_t enabled)
 600 {
 601         DBG("enabled %d", enabled);
 602
 603         if (enabled == TRUE)
 604                 g_hash_table_foreach(provider_hash, provider_disconnect_all,
 605                                                                         NULL);
 606
 607 }
 608
 609 static void provider_initialize(struct connman_provider *provider)
 610 {
 611         DBG("provider %p", provider);
 612
 613         provider->index = 0;
 614         provider->identifier = NULL;
 615 }
 616
 617 static struct connman_provider *provider_new(void)
 618 {
 619         struct connman_provider *provider;
 620
 621         provider = g_try_new0(struct connman_provider, 1);
 622         if (provider == NULL)
 623                 return NULL;
 624
 625         provider->refcount = 1;
 626
 627         DBG("provider %p", provider);
 628         provider_initialize(provider);
 629
 630         return provider;
 631 }
 632
 633 struct connman_provider *connman_provider_get(const char *identifier)
 634 {
 635         struct connman_provider *provider;
 636
 637         provider = g_hash_table_lookup(provider_hash, identifier);
 638         if (provider != NULL)
 639                 return provider;
 640
 641         provider = provider_new();
 642         if (provider == NULL)
 643                 return NULL;
 644
 645         DBG("provider %p", provider);
 646
 647         provider->identifier = g_strdup(identifier);
 648
 649         g_hash_table_insert(provider_hash, provider->identifier, provider);
 650
 651         return provider;
 652 }
 653
 654 void connman_provider_put(struct connman_provider *provider)
 655 {
 656         g_hash_table_remove(provider_hash, provider->identifier);
 657 }
 658
 659 static struct connman_provider *provider_get(int index)
 660 {
 661         GHashTableIter iter;
 662         gpointer value, key;
 663
 664         g_hash_table_iter_init(&iter, provider_hash);
 665
 666         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 667                 struct connman_provider *provider = value;
 668
 669                 if (provider->index == index)
 670                         return provider;
 671         }
 672
 673         return NULL;
 674 }
 675
 676 static void provider_service_changed(struct connman_service *service,
 677                                 enum connman_service_state state)
 678 {
 679         struct connman_provider *provider;
 680         int vpn_index, service_index;
 681
 682         if (service == NULL)
 683                 return;
 684
 685         switch (state) {
 686         case CONNMAN_SERVICE_STATE_UNKNOWN:
 687         case CONNMAN_SERVICE_STATE_IDLE:
 688         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 689         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 690         case CONNMAN_SERVICE_STATE_READY:
 691         case CONNMAN_SERVICE_STATE_ONLINE:
 692                 return;
 693         case CONNMAN_SERVICE_STATE_DISCONNECT:
 694         case CONNMAN_SERVICE_STATE_FAILURE:
 695                 break;
 696         }
 697
 698         service_index = __connman_service_get_index(service);
 699
 700         vpn_index = __connman_connection_get_vpn_index(service_index);
 701
 702         DBG("service %p %s state %d index %d/%d", service,
 703                 __connman_service_get_ident(service),
 704                 state, service_index, vpn_index);
 705
 706         if (vpn_index < 0)
 707                 return;
 708
 709         provider = provider_get(vpn_index);
 710         if (provider == NULL)
 711                 return;
 712
 713         DBG("disconnect %p index %d", provider, vpn_index);
 714
 715         connman_provider_disconnect(provider);
 716
 717         return;
 718 }
 719
 720 static struct connman_notifier provider_notifier = {
 721         .name                   = "provider",
 722         .offline_mode           = provider_offline_mode,
 723         .service_state_changed  = provider_service_changed,
 724 };
 725
 726 int __connman_provider_init(void)
 727 {
 728         int err;
 729
 730         DBG("");
 731
 732         connection = connman_dbus_get_connection();
 733
 734         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 735                                                 NULL, unregister_provider);
 736
 737         err = connman_notifier_register(&provider_notifier);
 738         if (err < 0) {
 739                 g_hash_table_destroy(provider_hash);
 740                 dbus_connection_unref(connection);
 741         }
 742
 743         return err;
 744 }
 745
 746 void __connman_provider_cleanup(void)
 747 {
 748         DBG("");
 749
 750         connman_notifier_unregister(&provider_notifier);
 751
 752         g_hash_table_destroy(provider_hash);
 753         provider_hash = NULL;
 754
 755         dbus_connection_unref(connection);
 756 }